mirror of
https://sourceware.org/git/glibc.git
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d40ac01cbb
The recursive lock used on abort does not synchronize with a new process
creation (either by fork-like interfaces or posix_spawn ones), nor it
is reinitialized after fork().
Also, the SIGABRT unblock before raise() shows another race condition,
where a fork or posix_spawn() call by another thread, just after the
recursive lock release and before the SIGABRT signal, might create
programs with a non-expected signal mask. With the default option
(without POSIX_SPAWN_SETSIGDEF), the process can see SIG_DFL for
SIGABRT, where it should be SIG_IGN.
To fix the AS-safe, raise() does not change the process signal mask,
and an AS-safe lock is used if a SIGABRT is installed or the process
is blocked or ignored. With the signal mask change removal,
there is no need to use a recursive loc. The lock is also taken on
both _Fork() and posix_spawn(), to avoid the spawn process to see the
abort handler as SIG_DFL.
A read-write lock is used to avoid serialize _Fork and posix_spawn
execution. Both sigaction (SIGABRT) and abort() requires to lock
as writer (since both change the disposition).
The fallback is also simplified: there is no need to use a loop of
ABORT_INSTRUCTION after _exit() (if the syscall does not terminate the
process, the system is broken).
The proposed fix changes how setjmp works on a SIGABRT handler, where
glibc does not save the signal mask. So usage like the below will now
always abort.
static volatile int chk_fail_ok;
static jmp_buf chk_fail_buf;
static void
handler (int sig)
{
if (chk_fail_ok)
{
chk_fail_ok = 0;
longjmp (chk_fail_buf, 1);
}
else
_exit (127);
}
[...]
signal (SIGABRT, handler);
[....]
chk_fail_ok = 1;
if (! setjmp (chk_fail_buf))
{
// Something that can calls abort, like a failed fortify function.
chk_fail_ok = 0;
printf ("FAIL\n");
}
Such cases will need to use sigsetjmp instead.
The _dl_start_profile calls sigaction through _profil, and to avoid
pulling abort() on loader the call is replaced with __libc_sigaction.
Checked on x86_64-linux-gnu and aarch64-linux-gnu.
Reviewed-by: DJ Delorie <dj@redhat.com>
8023 lines
370 KiB
Plaintext
8023 lines
370 KiB
Plaintext
GNU C Library NEWS -- history of user-visible changes.
|
||
Copyright (C) 1992-2024 Free Software Foundation, Inc.
|
||
See the end for copying conditions.
|
||
|
||
Please send GNU C library bug reports via <https://sourceware.org/bugzilla/>
|
||
using `glibc' in the "product" field.
|
||
|
||
Version 2.41
|
||
|
||
Major new features:
|
||
|
||
* In /etc/resolv.conf and the RES_OPTIONS, option flags can now be
|
||
prefixed with “-” to clear previously set flags. For example, if
|
||
/etc/resolv.conf contains “options no-aaaa”, a process running with
|
||
the RES_OPTIONS=-no-aaaa environment variable performs AAAA DNS
|
||
queries when the glibc DNS stub resolver is used.
|
||
|
||
* The DNS stub resolver now supports the strict-error option. If
|
||
activated, getaddrinfo for the AF_UNSPEC address family (with dual
|
||
A/AAAA DNS lookups) attemps to obtain an A/AAAA response pair from
|
||
another DNS server if one of the responses indicates failure. Without
|
||
the strict-error option, getaddrinfo returns the A record data it has
|
||
obtained even if the AAAA query failed. The new strict error mode is
|
||
incompatible with some DNS environments which do not follow the RFCs,
|
||
which is why this mode is not enabled by default. A future version
|
||
of the library may turn it on by default, however.
|
||
|
||
* On Linux, the sched_setattr and sched_getattr have been added, for
|
||
supporting parameterized scheduling policies such as SCHED_DEADLINE.
|
||
|
||
* The iconv program now supports converting files in place. The program
|
||
automatically uses a temporary file if required.
|
||
|
||
Deprecated and removed features, and other changes affecting compatibility:
|
||
|
||
* The big-endian ARC port (arceb-linux-gnu) has been removed.
|
||
|
||
* The abort is now async-signal-safe and its implementation makes longjmp
|
||
from the SIGABRT handler always abort if set up with setjmp. Use sigsetjmp
|
||
to keep the old behavior, where the handler does not stop the process
|
||
execution.
|
||
|
||
Changes to build and runtime requirements:
|
||
|
||
[Add changes to build and runtime requirements here]
|
||
|
||
Security related changes:
|
||
|
||
The following CVEs were fixed in this release, details of which can be
|
||
found in the advisories directory of the release tarball:
|
||
|
||
[The release manager will add the list generated by
|
||
scripts/process-advisories.sh just before the release.]
|
||
|
||
The following bugs were resolved with this release:
|
||
|
||
[The release manager will add the list generated by
|
||
scripts/list-fixed-bugs.py just before the release.]
|
||
|
||
Version 2.40
|
||
|
||
Major new features:
|
||
|
||
* The <stdbit.h> header type-generic macros have been changed when using
|
||
GCC 14.1 or later to use __builtin_stdc_bit_ceil etc. built-in functions
|
||
in order to support unsigned __int128 and/or unsigned _BitInt(N) operands
|
||
with arbitrary precisions when supported by the target.
|
||
|
||
* The GNU C Library now supports a feature test macro _ISOC23_SOURCE to
|
||
enable features from the ISO C23 standard. Only some features from
|
||
this standard are supported by the GNU C Library. The older name
|
||
_ISOC2X_SOURCE is still supported. Features from C23 are also enabled
|
||
by _GNU_SOURCE, or by compiling with the GCC options -std=c23,
|
||
-std=gnu23, -std=c2x or -std=gnu2x.
|
||
|
||
* The following ISO C23 function families (introduced in TS
|
||
18661-4:2015) are now supported in <math.h>. Each family includes
|
||
functions for float, double, long double, _FloatN and _FloatNx, and a
|
||
type-generic macro in <tgmath.h>.
|
||
|
||
- Exponential functions: exp2m1, exp10m1.
|
||
|
||
- Logarithmic functions: log2p1, log10p1, logp1.
|
||
|
||
* A new tunable, glibc.rtld.enable_secure, can be used to run a program
|
||
as if it were a setuid process. This is currently a testing tool to allow
|
||
more extensive verification tests for AT_SECURE programs and not meant to
|
||
be a security feature.
|
||
|
||
* On Linux, the epoll header was updated to include epoll ioctl definitions
|
||
and the related structure added in Linux kernel 6.9.
|
||
|
||
* The fortify functionality has been significantly enhanced for building
|
||
programs with clang against the GNU C Library.
|
||
|
||
* Many functions have been added to the vector library for aarch64:
|
||
acosh, asinh, atanh, cbrt, cosh, erf, erfc, hypot, pow, sinh, tanh
|
||
|
||
* On x86, memset can now use non-temporal stores to improve the performance
|
||
of large writes. This behaviour is controlled by a new tunable
|
||
x86_memset_non_temporal_threshold.
|
||
|
||
Deprecated and removed features, and other changes affecting compatibility:
|
||
|
||
* Architectures which use a 32-bit seconds-since-epoch field in struct
|
||
lastlog, struct utmp, struct utmpx (such as i386, powerpc64le, rv32,
|
||
rv64, x86-64) switched from a signed to an unsigned type for that
|
||
field. This allows these fields to store timestamps beyond the year
|
||
2038, until the year 2106. Please note that applications are still
|
||
expected to migrate off the interfaces declared in <utmp.h> and
|
||
<utmpx.h> (except for login_tty) due to locking and session management
|
||
problems.
|
||
|
||
* __rseq_size now denotes the size of the active rseq area (20 bytes
|
||
initially), not the size of struct rseq (32 bytes initially).
|
||
|
||
Security related changes:
|
||
|
||
The following CVEs were fixed in this release, details of which can be
|
||
found in the advisories directory of the release tarball:
|
||
|
||
GLIBC-SA-2024-0004:
|
||
ISO-2022-CN-EXT: fix out-of-bound writes when writing escape
|
||
sequence (CVE-2024-2961)
|
||
|
||
GLIBC-SA-2024-0005:
|
||
nscd: Stack-based buffer overflow in netgroup cache (CVE-2024-33599)
|
||
|
||
GLIBC-SA-2024-0006:
|
||
nscd: Null pointer crash after notfound response (CVE-2024-33600)
|
||
|
||
GLIBC-SA-2024-0007:
|
||
nscd: netgroup cache may terminate daemon on memory allocation
|
||
failure (CVE-2024-33601)
|
||
|
||
GLIBC-SA-2024-0008:
|
||
nscd: netgroup cache assumes NSS callback uses in-buffer strings
|
||
(CVE-2024-33602)
|
||
|
||
The following bugs are resolved with this release:
|
||
|
||
[19622] network: Support aliasing with struct sockaddr
|
||
[21271] localedata: cv_RU: update translations
|
||
[23774] localedata: lv_LV collates Y/y incorrectly
|
||
[23865] string: wcsstr is quadratic-time
|
||
[25119] localedata: Change Czech weekday names to lowercase
|
||
[27777] stdio: fclose does a linear search, takes ages when many FILE*
|
||
are opened
|
||
[29770] libc: prctl does not match manual page ABI on powerpc64le-
|
||
linux-gnu
|
||
[29845] localedata: Update hr_HR locale currency to €
|
||
[30701] time: getutxent misbehaves on 32-bit x86 when _TIME_BITS=64
|
||
[31316] build: Fails test misc/tst-dirname "Didn't expect signal from
|
||
child: got `Illegal instruction'" on non SSE CPUs
|
||
[31317] dynamic-link: [RISCV] static PIE crashes during self
|
||
relocation
|
||
[31325] libc: mips: clone3 is wrong for o32
|
||
[31335] math: Compile glibc with -march=x86-64-v3 should disable FMA4
|
||
multi-arch version
|
||
[31339] libc: arm32 loader crash after cleanup in 2.36
|
||
[31340] manual: A bad sentence in section 22.3.5 (resource.texi)
|
||
[31357] dynamic-link: $(objpfx)tst-rtld-list-diagnostics.out rule
|
||
doesn't work with test wrapper
|
||
[31370] localedata: wcwidth() does not treat
|
||
DEFAULT_IGNORABLE_CODE_POINTs as zero-width
|
||
[31371] dynamic-link: x86-64: APX and Tile registers aren't preserved
|
||
in ld.so trampoline
|
||
[31372] dynamic-link: _dl_tlsdesc_dynamic doesn't preserve all caller-
|
||
saved registers
|
||
[31383] libc: _FORTIFY_SOURCE=3 and __fortified_attr_access vs size of
|
||
0 and zero size types
|
||
[31385] build: sort-makefile-lines.py doesn't check variable with _
|
||
nor with "^# variable"
|
||
[31402] libc: clone (NULL, NULL, ...) clobbers %r7 register on
|
||
s390{,x}
|
||
[31405] libc: Improve dl_iterate_phdr using _dl_find_object
|
||
[31411] localedata: Add Latgalian locale
|
||
[31412] build: GCC 6 failed to build i386 glibc on Fedora 39
|
||
[31429] build: Glibc failed to build with -march=x86-64-v3
|
||
[31468] libc: sigisemptyset returns true when the set contains signals
|
||
larger than 34
|
||
[31476] network: Automatic activation of single-request options break
|
||
resolv.conf reloading
|
||
[31479] libc: Missing #include <sys/rseq.h> in sched_getcpu.c may
|
||
result in a loss of rseq acceleration
|
||
[31501] dynamic-link: _dl_tlsdesc_dynamic_xsavec may clobber %rbx
|
||
[31518] manual: documentation: FLT_MAX_10_EXP questionable text, evtl.
|
||
wrong,
|
||
[31530] localedata: Locale file for Moksha - mdf_RU
|
||
[31553] malloc: elf/tst-decorate-maps fails on ppc64el
|
||
[31596] libc: On the llvm-arm32 platform, dlopen("not_exist.so", -1)
|
||
triggers segmentation fault
|
||
[31600] math: math: x86 ceill traps when FE_INEXACT is enabled
|
||
[31601] math: math: x86 floor traps when FE_INEXACT is enabled
|
||
[31603] math: math: x86 trunc traps when FE_INEXACT is enabled
|
||
[31612] libc: arc4random fails to fallback to /dev/urandom if
|
||
getrandom is not present
|
||
[31629] build: powerpc64: Configuring with "--with-cpu=power10" and
|
||
'CFLAGS=-O2 -mcpu=power9' fails to build glibc
|
||
[31640] dynamic-link: POWER10 ld.so crashes in
|
||
elf_machine_load_address with GCC 14
|
||
[31661] libc: NPROCESSORS_CONF and NPROCESSORS_ONLN not available in
|
||
getconf
|
||
[31676] dynamic-link: Configuring with CC="gcc -march=x86-64-v3"
|
||
--with-rtld-early-cflags=-march=x86-64 results in linker failure
|
||
[31677] nscd: nscd: netgroup cache: invalid memcpy under low
|
||
memory/storage conditions
|
||
[31678] nscd: nscd: Null pointer dereferences after failed netgroup
|
||
cache insertion
|
||
[31679] nscd: nscd: netgroup cache may terminate daemon on memory
|
||
allocation failure
|
||
[31680] nscd: nscd: netgroup cache assumes NSS callback uses in-buffer
|
||
strings
|
||
[31682] math: [PowerPC] Floating point exception error for math test
|
||
test-ceil-except-2 test-floor-except-2 test-trunc-except-2
|
||
[31686] dynamic-link: Stack-based buffer overflow in
|
||
parse_tunables_string
|
||
[31695] libc: pidfd_spawn/pidfd_spawnp leak an fd if clone3 succeeds
|
||
but execve fails
|
||
[31719] dynamic-link: --enable-hardcoded-path-in-tests doesn't work
|
||
with -Wl,--enable-new-dtags
|
||
[31730] libc: backtrace_symbols_fd prints different strings than
|
||
backtrace_symbols returns
|
||
[31753] build: FAIL: link-static-libc with GCC 6/7/8
|
||
[31755] libc: procutils_read_file doesn't start with a leading
|
||
underscore
|
||
[31756] libc: write_profiling is only in libc.a
|
||
[31757] build: Should XXXf128_do_not_use functions be excluded?
|
||
[31759] math: Extra nearbyint symbols in libm.a
|
||
[31760] math: Missing math functions
|
||
[31764] build: _res_opcodes should be a compat symbol only
|
||
[31765] dynamic-link: _dl_mcount_wrapper is exported without prototype
|
||
[31766] stdio: _IO_stderr_ _IO_stdin_ _IO_stdout should be compat
|
||
symbols
|
||
[31768] string: Extra stpncpy symbol in libc.a
|
||
[31770] libc: clone3 is in libc.a
|
||
[31774] libc: Missing __isnanf128 in libc.a
|
||
[31775] math: Missing exp10 exp10f32x exp10f64 fmod fmodf fmodf32
|
||
fmodf32x fmodf64 in libm.a
|
||
[31777] string: Extra memchr strlen symbols in libc.a
|
||
[31781] math: Missing math functions in libm.a
|
||
[31782] build: Test build failure with recent GCC trunk (x86/tst-cpu-
|
||
features-supports.c:69:3: error: parameter to builtin not valid:
|
||
avx5124fmaps)
|
||
[31785] string: loongarch: Extra strnlen symbols in libc.a
|
||
[31786] string: powerpc: Extra strchrnul and strncasecmp_l symbols in
|
||
libc.a
|
||
[31787] math: powerpc: Extra llrintf, llrintf, llrintf32, and
|
||
llrintf32 symbols in libc.a
|
||
[31788] libc: microblaze: Extra cacheflush symbol in libc.a
|
||
[31789] libc: powerpc: Extra versionsort symbol in libc.a
|
||
[31790] libc: s390: Extra getutent32, getutent32_r, getutid32,
|
||
getutid32_r, getutline32, getutline32_r, getutmp32, getutmpx32,
|
||
getutxent32, getutxid32, getutxline32, pututline32, pututxline32,
|
||
updwtmp32, updwtmpx32 in libc.a
|
||
[31797] build: g++ -static requirement should be able to opt-out
|
||
[31798] libc: pidfd_getpid.c is miscompiled by GCC 6.4
|
||
[31802] time: difftime is pure not const
|
||
[31808] time: The supported time_t range is not documented.
|
||
[31840] stdio: Memory leak in _IO_new_fdopen (fdopen) on seek failure
|
||
[31867] build: "CPU ISA level is lower than required" on SSE2-free
|
||
CPUs
|
||
[31876] time: "Date and time" documentation fixes for POSIX.1-2024 etc
|
||
[31883] build: ISA level support configure check relies on bashism /
|
||
is otherwise broken for arithmetic
|
||
[31892] build: Always install mtrace.
|
||
[31917] libc: clang mq_open fortify wrapper does not handle 4 argument
|
||
correctly
|
||
[31927] libc: clang open fortify wrapper does not handle argument
|
||
correctly
|
||
[31931] time: tzset may fault on very short TZ string
|
||
[31934] string: wcsncmp crash on s390x on vlbb instruction
|
||
[31963] stdio: Crash in _IO_link_in within __gcov_exit
|
||
[31965] dynamic-link: rseq extension mechanism does not work as
|
||
intended
|
||
[31980] build: elf/tst-tunables-enable_secure-env fails on ppc
|
||
|
||
Version 2.39
|
||
|
||
Major new features:
|
||
|
||
* A new tunable, glibc.cpu.plt_rewrite, can be used to enable PLT
|
||
rewrite on x86-64. When enabled with non-lazy binding, the dynamic
|
||
linker will rewrite indirect branches in PLT with direct branches.
|
||
|
||
* Sync with Linux kernel 6.6 shadow stack interface. The --enable-cet
|
||
configure option is only supported on x86-64.
|
||
|
||
* struct statvfs now has an f_type member, equal to the f_type statfs member;
|
||
on the Hurd this was always available under a reserved name,
|
||
and under Linux a spare has been allocated: it was always zero
|
||
in previous versions of glibc, and zero is not a valid result.
|
||
|
||
* On Linux, the functions posix_spawnattr_getcgroup_np and
|
||
posix_spawnattr_setcgroup_np have been added, along with the
|
||
POSIX_SPAWN_SETCGROUP flag. They allow posix_spawn and posix_spawnp
|
||
to set the cgroupv2 in the new process in a race-free manner. These
|
||
functions are GNU extensions and require a kernel with clone3 support.
|
||
|
||
* On Linux, the pidfd_spawn and pidfd_spawp functions have been added.
|
||
They have a similar prototype and semantic as posix_spawn, but instead of
|
||
returning a process ID, they return a file descriptor that can be used
|
||
along other pidfd functions (like pidfd_send_signal, poll, or waitid).
|
||
The pidfd functionality avoids the issue of PID reuse with the traditional
|
||
posix_spawn interface.
|
||
|
||
* On Linux, the pidfd_getpid function has been added. It allows retrieving
|
||
the process ID associated with the process file descriptor created by
|
||
pid_spawn, fork_np, or pidfd_open.
|
||
|
||
* scanf-family functions now support the wN format length modifiers for
|
||
arguments pointing to types intN_t, int_leastN_t, uintN_t or
|
||
uint_leastN_t (for example, %w32d to read int32_t or int_least32_t in
|
||
decimal, or %w32x to read uint32_t or uint_least32_t in hexadecimal)
|
||
and the wfN format length modifiers for arguments pointing to types
|
||
int_fastN_t or uint_fastN_t, as specified in draft ISO C2X.
|
||
|
||
* A new tunable, glibc.mem.decorate_maps, can be used to add additional
|
||
information on underlying memory allocated by the glibc (for instance,
|
||
on thread stack created by pthread_create or memory allocated by
|
||
malloc).
|
||
|
||
* The <stdbit.h> header has been added from ISO C2X, with
|
||
stdc_leading_zeros, stdc_leading_ones, stdc_trailing_zeros,
|
||
stdc_trailing_ones, stdc_first_leading_zero, stdc_first_leading_one,
|
||
stdc_first_trailing_zero, stdc_first_trailing_one, stdc_count_zeros,
|
||
stdc_count_ones, stdc_has_single_bit, stdc_bit_width, stdc_bit_floor
|
||
and stdc_bit_ceil function families, each having functions for
|
||
unsigned char, unsigned short, unsigned int, unsigned long int and
|
||
unsigned long long int, and a type-generic macro.
|
||
|
||
* On AArch64 new symbols were added to libmvec and now math.h has
|
||
annotations to allow GCC 9 or newer to auto-vectorize calls to the
|
||
following scalar math functions when -ffast-math is specified:
|
||
acos, acosf, asin, asinf, atan, atanf, atan2, atan2f, cos, cosf,
|
||
exp, expf, exp10, exp10f, exp2, exp2f, expm1, expm1f, log, logf,
|
||
log10, log10f, log1p, log1pf, log2, log2f, sin, sinf, tan, tanf.
|
||
|
||
Deprecated and removed features, and other changes affecting compatibility:
|
||
|
||
* The ldconfig program now skips file names containing ';' or ending in
|
||
".dpkg.tmp" or ".dpkg.new", to avoid examining temporary files created
|
||
by the RPM and dpkg package managers.
|
||
|
||
* libcrypt has been removed from the GNU C Library. The configure
|
||
options "--enable-crypt" and "--enable-nss-crypt" are no longer
|
||
available. <crypt.h>, libcrypt.a, and libcrypt.so.1 will not be
|
||
installed. For now <unistd.h> continues to declare the crypt
|
||
function by default, to avoid introducing vulnerabilities into
|
||
existing applications due to a missing prototype. This declaration
|
||
is deprecated and may be removed in a future glibc release.
|
||
|
||
The replacement for libcrypt is libxcrypt, maintained separately from
|
||
GNU libc, but available under compatible licensing terms, and providing
|
||
binary backward compatibility with the former libcrypt. It is currently
|
||
distributed from <https://github.com/besser82/libxcrypt/>.
|
||
|
||
As a consequence of this removal, GNU libc no longer makes any use of
|
||
the NSS cryptography library (Network Security Services; not to be
|
||
confused with Name Service Switch). Distributors of binary packages
|
||
of GNU libc are advised to check whether their build processes can be
|
||
simplified.
|
||
|
||
* The dynamic linker calls the malloc and free functions in more cases
|
||
during TLS access if a shared object with dynamic TLS is loaded and
|
||
unloaded. This can result in an infinite recursion if a malloc
|
||
replacement library or its dependencies use dynamic TLS instead of
|
||
initial-exec TLS.
|
||
|
||
* The ia64*-*-linux-gnu configurations are no longer supported.
|
||
|
||
Changes to build and runtime requirements:
|
||
|
||
* Building on LoongArch requires at a minimum binutils 2.41 for vector
|
||
instructions.
|
||
|
||
Security related changes:
|
||
|
||
The following CVEs were fixed in this release, details of which can be
|
||
found in the advisories directory of the release tarball:
|
||
|
||
GLIBC-SA-2023-0002:
|
||
getaddrinfo: Stack read overflow in no-aaaa mode (CVE-2023-4527)
|
||
|
||
GLIBC-SA-2023-0003:
|
||
getaddrinfo: Potential use-after-free (CVE-2023-4806)
|
||
|
||
GLIBC-SA-2023-0004:
|
||
tunables: local privilege escalation through buffer overflow
|
||
(CVE-2023-4911)
|
||
|
||
GLIBC-SA-2024-0001:
|
||
syslog: Heap buffer overflow in __vsyslog_internal (CVE-2023-6246)
|
||
|
||
GLIBC-SA-2024-0002:
|
||
syslog: Heap buffer overflow in __vsyslog_internal (CVE-2023-6779)
|
||
|
||
GLIBC-SA-2024-0003:
|
||
syslog: Integer overflow in __vsyslog_internal (CVE-2023-6780)
|
||
|
||
GLIBC-SA-2024-0004:
|
||
ISO-2022-CN-EXT: fix out-of-bound writes when writing escape
|
||
sequence (CVE-2024-2961)
|
||
|
||
GLIBC-SA-2024-0005:
|
||
nscd: Stack-based buffer overflow in netgroup cache (CVE-2024-33599)
|
||
|
||
GLIBC-SA-2024-0006:
|
||
nscd: Null pointer crashes after notfound response
|
||
(CVE-2024-33600)
|
||
|
||
GLIBC-SA-2024-0007:
|
||
nscd: netgroup cache may terminate daemon on memory allocation
|
||
failure (CVE-2024-33601)
|
||
|
||
GLIBC-SA-2024-0008:
|
||
nscd: netgroup cache assumes NSS callback uses in-buffer strings
|
||
(CVE-2024-33602)
|
||
|
||
The following bugs are resolved with this release:
|
||
|
||
[14522] localedata: fy_DE: LC_IDENTIFICATION data looks weird
|
||
[19305] libc: qsort() should return early if (nmemb <= 1)
|
||
[19479] localedata: gbm_IN: new Garhwali Locale
|
||
[19924] dynamic-link: TLS performance degradation after dlopen
|
||
[19956] localedata: ssy_ER: rename from aa_ER@saaho
|
||
[21719] libc: stdlib/msort : optimizing merge sort
|
||
[22526] localedata: th_TH LC_COLLATE does not use copy "iso14651_t1"
|
||
[23012] localedata: el_GR: Greece now uses the 24h format for time
|
||
[23172] localedata: miq_NI: Provide actually abbreviated month names
|
||
[24006] localedata: Cyclic dependencies via copy in locales
|
||
[24013] localedata: am_pm definitions for es_ES
|
||
[24386] localedata: crh_RU: new locale
|
||
[24877] localedata: [Redundant Data] Remove redundant data between
|
||
en_NZ and en_AU
|
||
[25868] localedata: Incorrect trailing spaces in weekday names for
|
||
nn_NO
|
||
[26752] localedata: Please add the new locale zgh_MA
|
||
[27069] dynamic-link: Need a way to tell if a tunable is set by user
|
||
[27163] localedata: Error on test glk_IR with localedef
|
||
[27312] localedata: su_ID: new Sundanese locale
|
||
[27547] manual: "Summary of malloc-Related Functions" shows wrong
|
||
argument order for `aligned_alloc` and `memalign`
|
||
[27574] libc: glibc should probably not define __WORDSIZE=64 for
|
||
__sparcv9
|
||
[27601] localedata: License information update in
|
||
localedata/locales/ast_ES
|
||
[28558] localedata: it_IT LC_MONETARY outdated p_cs_precedes and
|
||
n_cs_precedes
|
||
[28787] localedata: Add information for Occitan
|
||
[29039] dynamic-link: Corrupt DTV after reuse of a TLS module ID
|
||
following dlclose with unused TLS
|
||
[29486] localedata: New Zealand locales (en_NZ & mi_NZ) first day of
|
||
week should be Monday
|
||
[29504] localedata: Incorrect/misleading Time Format For ms_MY (AM/PM)
|
||
[29506] localedata: UTF-8 HANGUL SYLLABLE bugs
|
||
[30349] libc: Support returning a pidfd from posix_spawn()
|
||
[30412] localedata: d_t_fmt in id_ID uses %r placeholder but am_pm and
|
||
t_fmt_ampm are undefined
|
||
[30605] localedata: New locale for Komi language
|
||
[30649] localedata: [PATCH] Add transliteration of common emojis to
|
||
smileys
|
||
[30694] locale: The iconv program no longer tells the user which given
|
||
encoding name was wrong
|
||
[30709] nscd: nscd fails to build with cleanup handler if built with
|
||
-fexceptions
|
||
[30737] libc: fdopendir() is not robust - returns bogus DIR* instead
|
||
of flagging an error
|
||
[30740] build: [m68k] undefined reference to
|
||
`_wordcopy_fwd_dest_aligned'
|
||
[30745] libc: Slight bug in cache info codes for x86
|
||
[30750] network: Unaligned accesses in resolver
|
||
[30773] math: [m68k] busybox awk is broken (lshift.S related)
|
||
[30789] libc: [2.38 Regression] sem_open will fail on multithreaded
|
||
scenarios when semaphore file doesn't exist (O_CREAT)
|
||
[30800] nscd: Improper assert in prune_cache triggers if clock jumps
|
||
backwards
|
||
[30804] libc: F_GETLK, F_SETLK, and F_SETLKW value change for
|
||
powerpc64 with -D_FILE_OFFSET_BITS=64
|
||
[30842] network: Stack read overflow in getaddrinfo in no-aaaa mode
|
||
(CVE-2023-4527)
|
||
[30843] network: potential use-after-free in getcanonname
|
||
(CVE-2023-4806)
|
||
[30854] localedata: Update locale data to Unicode 15.1.0
|
||
[30884] network: Memory leak in getaddrinfo after fix for bug 30843
|
||
(CVE-2023-5156)
|
||
[30932] libc: Fortify Source has false-positives when too many files
|
||
are open
|
||
[30945] malloc: Core affinity setting incurs lock contentions between
|
||
threads
|
||
[30960] math: signed integer overflow in
|
||
glibc/sysdeps/s390/fpu/feenablxcpt.c
|
||
[30964] locale: Number grouping check mishandles multibyte thousands
|
||
separator
|
||
[30981] dynamic-link: dlclose does not properly implement force-first
|
||
handling
|
||
[30988] math: fesetexcept raises floating-point exception traps on
|
||
ppc, ppc64, ppc64le
|
||
[30989] math: fesetexcept raises floating-point exception traps on
|
||
i386
|
||
[30990] libc: fesetexceptflag raises floating-point exception traps on
|
||
i386, x86_64
|
||
[30998] math: fesetexceptflag clears too many floating-point exception
|
||
flags on alpha
|
||
[31019] manual: The documentation of feenableexcept is incomplete
|
||
[31022] math: feupdateenv (FE_DFL_ENV) crashes on riscv
|
||
[31035] libc: Library search path terminates on relative non-directory
|
||
name
|
||
[31042] libc: [s390x] .init and .fini padding
|
||
[31068] libc: sysdeps: sparc: invalid data access in memset due to
|
||
regression
|
||
[31078] manual: Code example in "Noncanonical Mode Example" has unused
|
||
'char *name;'
|
||
[31086] localedata: Errors in Tibetan, Dzongkha data
|
||
[31113] string: Wrong unwind information for rawmemchr on aarch64
|
||
[31151] libc: [RISC-V] missing support for profile/audit PLT setup
|
||
[31163] nss: getaddrinfo returns EAI_NONAME in oom situation
|
||
[31183] stdio: Wide stream buffer size reduced MB_LEN_MAX bytes after
|
||
bug 17522 fix
|
||
[31184] dynamic-link: FAIL: elf/tst-tlsgap
|
||
[31185] dynamic-link: Incorrect thread point access in
|
||
_dl_tlsdesc_undefweak and _dl_tlsdesc_dynamic
|
||
[31187] dynamic-link: Some CET tests fail with GCC 14
|
||
[31204] localedata: Fix decimal point and thousands separator for
|
||
uz_UZ
|
||
[31205] localedata: Inconsistent (mon_)grouping formats
|
||
[31218] dynamic-link: PLT rewrite overflows large displacement on x32
|
||
[31221] localedata: Add localedata for ISO code "tok" (Toki Pona)
|
||
[31230] dynamic-link: PLT rewrite failed without SELinux
|
||
[31239] localedata: anp_IN locale: abbreviated month names are the
|
||
same as the full month names
|
||
[31244] nptl: pthread_cancel hangs on sparc32
|
||
[31257] localedata: Sync with CLDR: “Turkey” -> “Türkiye”
|
||
[31266] string: sparc: string/tst-memmove-overflow fails on 32-bit
|
||
sparcv9
|
||
[31276] libc: Wrong condition for heap allocation in qsort_r
|
||
|
||
Version 2.38
|
||
|
||
Major new features:
|
||
|
||
* When C2X features are enabled and the base argument is 0 or 2, the
|
||
following functions support binary integers prefixed by 0b or 0B as
|
||
input: strtol, strtoll, strtoul, strtoull, strtol_l, strtoll_l,
|
||
strtoul_l, strtoull_l, strtoimax, strtoumax, strtoq, strtouq, wcstol,
|
||
wcstoll, wcstoul, wcstoull, wcstol_l, wcstoll_l, wcstoul_l,
|
||
wcstoull_l, wcstoimax, wcstoumax, wcstoq, wcstouq. Similarly, the
|
||
following functions support binary integers prefixed by 0b or 0B as
|
||
input to the %i format: fscanf, scanf, sscanf, vscanf, vsscanf,
|
||
vfscanf, fwscanf, wscanf, swscanf, vfwscanf, vwscanf, vswscanf; those
|
||
functions also support the %b format for binary integers, with or
|
||
without such a prefix and independent of standards mode.
|
||
|
||
* PRIb*, PRIB* and SCNb* macros from C2X have been added to
|
||
<inttypes.h>.
|
||
|
||
* printf-family functions now support the wN format length modifiers for
|
||
arguments of type intN_t, int_leastN_t, uintN_t or uint_leastN_t (for
|
||
example, %w32d to print int32_t or int_least32_t in decimal, or %w32x
|
||
to print uint32_t or uint_least32_t in hexadecimal) and the wfN format
|
||
length modifiers for arguments of type int_fastN_t or uint_fastN_t, as
|
||
specified in draft ISO C2X.
|
||
|
||
* A new tunable, glibc.pthread.stack_hugetlb, can be used to disable
|
||
Transparent Huge Pages (THP) in stack allocation at pthread_create.
|
||
|
||
* Support for x86_64 running on Hurd has been added. This port requires
|
||
as least binutils 2.40 and GCC 13:
|
||
|
||
- x86_64-gnu
|
||
|
||
* Vector math library libmvec support has been added to AArch64. It
|
||
requires GCC version >= 10.1.0. It can be disabled via
|
||
"--disable-mathvec", however that is not a supported configuration as
|
||
it changes the ABI. The symbol names follow the AArch64 vector ABI,
|
||
they are declared in math.h and have to be called manually at this point.
|
||
|
||
* The strlcpy and strlcat functions have been added. They are derived
|
||
from OpenBSD, and are expected to be added to a future POSIX version.
|
||
|
||
* A new configure option, "--enable-fortify-source", can be used to build the
|
||
GNU C Library with _FORTIFY_SOURCE. The level of fortification can either be
|
||
provided, or is set to the highest value supported by the compiler. If not
|
||
explicitly enabled, then fortify source is forcibly disabled so to keep
|
||
original behavior unchanged.
|
||
|
||
Deprecated and removed features, and other changes affecting compatibility:
|
||
|
||
* libcrypt is no longer built by default; one may use the "--enable-crypt"
|
||
option to build libcrypt. libcrypt is likely to be removed from the
|
||
GNU C Library in a future release, so it is recommended that
|
||
applications port away from it to an alternative such as libxcrypt.
|
||
|
||
* In the Linux kernel for the hppa/parisc architecture some of the
|
||
MADV_XXX constants were changed to have the same values as the other
|
||
architectures. New programs compiled with this glibc version and which
|
||
use the madvise call will require at least Linux kernel version 6.2,
|
||
alternatively stable kernels from versions 6.1.6, 5.15.87, 5.10.163,
|
||
5.4.228, 4.19.270 or 4.14.303.
|
||
|
||
* The "--disable-experimental-malloc" option is no longer available. The
|
||
per-thread cache can still be disabled per-application using tunables
|
||
(glibc.malloc.tcache_count set to zero).
|
||
|
||
* The configure option "--enable-tunables" has been removed. The tunable
|
||
feature is now always enabled.
|
||
|
||
Changes to build and runtime requirements:
|
||
|
||
* Building libmvec on AArch64 requires at a minimum GCC 10.1.0 for SVE
|
||
ACLE.
|
||
|
||
Security related changes:
|
||
|
||
CVE-2023-25139: When the printf family of functions is called with a
|
||
format specifier that uses an <apostrophe> (enable grouping) and a
|
||
minimum width specifier, the resulting output could be larger than
|
||
reasonably expected by a caller that computed a tight bound on the
|
||
buffer size. The resulting larger than expected output could result
|
||
in a buffer overflow in the printf family of functions.
|
||
|
||
The following bugs are resolved with this release:
|
||
|
||
[178] string: Please add strlcpy and strlcat (attached)
|
||
[14697] nptl: Behavior of exit is nonconformant with respect to
|
||
threads and stdio
|
||
[15142] stdio: Missing locking in _IO_cleanup
|
||
[18096] glob: null deref in wordexp/parse_dollars/parse_arith
|
||
[18906] stdio: fopen: ccs value may affect open mode
|
||
[24466] stdio: Feature request: provide special printf formats for
|
||
intXX_t
|
||
[25457] nss: hosts lookup fails for ipv4mapped ipv6 addresses
|
||
[28519] libc: system and popen should pass "--" between /bin/sh and
|
||
argument
|
||
[29016] stdio: popen() sets errno to ENOMEM when shell does not exist
|
||
[29591] string: wcsnlen length can overflow in page cross case.
|
||
[30053] time: strftime %s returns -1 after 2038 on 32 bits systems
|
||
[30068] stdio: incorrect printf output for integers with thousands
|
||
separator and width field (CVE-2023-25139)
|
||
[30111] time: support_descriptors_list fails after 2038 on 32 bits
|
||
systems
|
||
[30125] dynamic-link: [regression, bisected] glibc-2.37 creates new
|
||
symlink for libraries without soname
|
||
[30130] math: [s390] The _FPU_SETCW macro yields compile error with
|
||
Clang
|
||
[30156] time: Potential ntp_gettime abi break
|
||
[30235] libc: Missing fallback in getlogin if loginuid is unset
|
||
[30258] dynamic-link: sprof cannot read and display shared object
|
||
profiling data correctly
|
||
[30263] libc: Add test coverage for abs(), labs(), and llabs().
|
||
[30305] math: Incorrect asm constraint in feraiseexcept on x86-64
|
||
[30402] libc: FAIL: elf/tst-glibcelf
|
||
[30425] dynamic-link: Symbol lookup during dlclose may fail
|
||
unnecessarily
|
||
[30435] dynamic-link: Root dir wrongly marked as nonexist in open_path
|
||
[30477] libc: [RISCV]: time64 does not work on riscv32
|
||
[30515] dynamic-link: _dl_find_object incorrectly returns 1 during
|
||
early startup
|
||
[30527] network: resolv_conf lock not unlocked on allocation failure
|
||
[30550] math: powerpc64le: GCC-specific code for isinf() is being used
|
||
on clang
|
||
[30555] string: strerror can incorrectly return NULL
|
||
[30579] malloc: trim_threshold in realloc lead to high memory usage
|
||
[30662] nscd: Group and password cache use errno in place of errval
|
||
|
||
Version 2.37
|
||
|
||
Major new features:
|
||
|
||
* The getent tool now supports the --no-addrconfig option. The output of
|
||
getent with --no-addrconfig may contain addresses of families not
|
||
configured on the current host i.e. as-if you had not passed
|
||
AI_ADDRCONFIG to getaddrinfo calls.
|
||
|
||
Deprecated and removed features, and other changes affecting compatibility:
|
||
|
||
* The dynamic linker no longer loads shared objects from the "tls"
|
||
subdirectories on the library search path or the subdirectory that
|
||
corresponds to the AT_PLATFORM system name, or employs the legacy AT_HWCAP
|
||
search mechanism, which was deprecated in version 2.33.
|
||
|
||
Security related changes:
|
||
|
||
CVE-2022-39046: When the syslog function is passed a crafted input
|
||
string larger than 1024 bytes, it reads uninitialized memory from the
|
||
heap and prints it to the target log file, potentially revealing a
|
||
portion of the contents of the heap.
|
||
|
||
The following bugs are resolved with this release:
|
||
|
||
[12154] network: Cannot resolve hosts which have wildcard aliases
|
||
[12165] libc: readdir: Do not skip entries with zero d_ino values
|
||
[19444] build: build failures with -O1 due to -Wmaybe-uninitialized
|
||
[24774] nptl: pthread_rwlock_timedwrlock stalls on ARM
|
||
[24816] nss: nss/tst-nss-files-hosts-long fails when no interface has
|
||
AF_INET6 address (ie docker)
|
||
[27087] stdio: PowerPC: Redefinition error with Clang from IEEE
|
||
redirection headers
|
||
[28846] network: CMSG_NXTHDR may trigger -Wstrict-overflow warning
|
||
[28937] dynamic-link: New DSO dependency sorter does not put new map
|
||
first if in a cycle
|
||
[29249] libc: csu/libc-tls.c:202: undefined reference to
|
||
`_startup_fatal_not_constant'
|
||
[29305] network: Inefficient buffer space usage in nss_dns for
|
||
gethostbyname and other functions
|
||
[29375] libc: don't hide MAP_ANONYMOUS behind _GNU_SOURCE
|
||
[29402] nscd: nscd: No such file or directory
|
||
[29415] nscd: getaddrinfo with AI_ADDRCONFIG returns addresses with
|
||
wrong family
|
||
[29427] dynamic-link: Inconsistency detected by ld.so: dl-printf.c:
|
||
200: _dl_debug_vdprintf: Assertion `! "invalid format specifier"'
|
||
failed!
|
||
[29463] math: math/test-float128-y1 fails on x86_64
|
||
[29485] build: Make hangs when the test misc/tst-pidfile returns
|
||
FAIL_UNSUPPORTED
|
||
[29490] dynamic-link: [bisected] new __brk_call causes dynamic loader
|
||
segfault on alpha
|
||
[29499] build: Check failed on misc/tst-glibcsyscalls while building
|
||
for RISCV64 on a unmatched hardware
|
||
[29501] build: Check failed on stdlib/tst-strfrom while building for
|
||
RISCV64 on a unmatched hardware
|
||
[29502] libc: alpha sys/acct.h out of date
|
||
[29514] build: Need to use -fPIE not -fpie
|
||
[29528] dynamic-link: __libc_early_init not called after dlmopen that
|
||
reuses namespace
|
||
[29536] libc: syslog fail to create large messages (CVE-2022-39046)
|
||
[29537] libc: [2.34 regression]: Alignment issue on m68k when using
|
||
futexes on qemu-user
|
||
[29539] libc: LD_TRACE_LOADED_OBJECTS changed how vDSO library are
|
||
printed
|
||
[29544] libc: Regression in syslog(3) calls breaks RFC due to extra
|
||
whitespace
|
||
[29564] build: Incorrect way to change MAKEFLAGS in Makerules
|
||
[29576] build: librtld.os: in function `_dl_start_profile':
|
||
(.text+0x9444): undefined reference to `strcpy'
|
||
[29578] libc: Definition of SUN_LEN() is wrong
|
||
[29583] build: iconv failures on 32bit platform due to missing large
|
||
file support
|
||
[29600] dynamic-link: dlmopen hangs after loading certain libraries
|
||
[29604] localedata: Update locale data to Unicode 15.0.0
|
||
[29605] nscd: Regression in NSCD backend of getaddrinfo
|
||
[29607] nscd: nscd repeatably crashes calling __strlen_avx2 when hosts
|
||
cache is enabled
|
||
[29611] string: Optimized AVX2 string functions unconditionally use
|
||
BMI2 instructions
|
||
[29624] malloc: errno is not cleared when entering main
|
||
[29638] libc: stdlib: arc4random fallback is never used
|
||
[29657] libc: Incorrect struct stat for 64-bit time on linux/generic
|
||
platforms
|
||
[29698] build: Configuring for AArch32 on ARMv8+ disables
|
||
optimizations
|
||
[29727] locale: __strtol_internal out-of-bounds read when parsing
|
||
thousands grouping
|
||
[29730] libc: broken y2038 support in fstatat on MIPS N64
|
||
[29746] libc: ppoll() does not switch to __ppoll64 when
|
||
-D_TIME_BITS=64 and -D_FORTIFY_SOURCE=2 is given on 32bit
|
||
[29771] libc: Restore IPC_64 support in sysvipc *ctl functions
|
||
[29780] build: possible parallel make issue in glibc-2.36 (siglist-
|
||
aux.S: No such file or directory)
|
||
[29864] libc: __libc_start_main() should obtain program headers
|
||
address (_dl_phdr) from the auxv, not the ELF header.
|
||
[29951] time: daylight variable not set correctly if last DST change
|
||
coincides with offset change
|
||
[30039] stdio: __vsprintf_internal does not handle unspecified buffer
|
||
length in fortify mode
|
||
|
||
Version 2.36
|
||
|
||
Major new features:
|
||
|
||
* Support for DT_RELR relative relocation format has been added to
|
||
glibc. This is a new ELF dynamic tag that improves the size of
|
||
relative relocations in shared object files and position independent
|
||
executables (PIE). DT_RELR generation requires linker support for
|
||
-z pack-relative-relocs option, which is supported for some targets
|
||
in recent binutils versions. Lazy binding doesn't apply to DT_RELR.
|
||
|
||
* On Linux, the pidfd_open, pidfd_getfd, and pidfd_send_signal functions
|
||
have been added. The pidfd functionality provides access to a process
|
||
while avoiding the issue of PID reuse on traditional Unix systems.
|
||
|
||
* On Linux, the process_madvise function has been added. It has the
|
||
same functionality as madvise but alters the target process identified
|
||
by the pidfd.
|
||
|
||
* On Linux, the process_mrelease function has been added. It allows a
|
||
caller to release the memory of a dying process. The release of the
|
||
memory is carried out in the context of the caller, using the caller's
|
||
CPU affinity, and priority with CPU usage accounted to the caller.
|
||
|
||
* The “no-aaaa” DNS stub resolver option has been added. System
|
||
administrators can use it to suppress AAAA queries made by the stub
|
||
resolver, including AAAA lookups triggered by NSS-based interfaces
|
||
such as getaddrinfo. Only DNS lookups are affected: IPv6 data in
|
||
/etc/hosts is still used, getaddrinfo with AI_PASSIVE will still
|
||
produce IPv6 addresses, and configured IPv6 name servers are still
|
||
used. To produce correct Name Error (NXDOMAIN) results, AAAA queries
|
||
are translated to A queries. The new resolver option is intended
|
||
primarily for diagnostic purposes, to rule out that AAAA DNS queries
|
||
have adverse impact. It is incompatible with EDNS0 usage and DNSSEC
|
||
validation by applications.
|
||
|
||
* On Linux, the fsopen, fsmount, move_mount, fsconfig, fspick, open_tree,
|
||
and mount_setattr have been added. They are part of the new Linux kernel
|
||
mount APIs that allow applications to more flexibly configure and operate
|
||
on filesystem mounts. The new mount APIs are specifically designed to work
|
||
with namespaces.
|
||
|
||
* localedef now accepts locale definition files encoded in UTF-8.
|
||
Previously, input bytes not within the ASCII range resulted in
|
||
unpredictable output.
|
||
|
||
* Support for the mbrtoc8 and c8rtomb multibyte/UTF-8 character conversion
|
||
functions has been added per the ISO C2X N2653 and C++20 P0482R6 proposals.
|
||
Support for the char8_t typedef has been added per the ISO C2X N2653
|
||
proposal. The functions are declared in uchar.h in C2X mode or when the
|
||
_GNU_SOURCE macro or C++20 __cpp_char8_t feature test macro is defined.
|
||
The char8_t typedef is declared in uchar.h in C2X mode or when the
|
||
_GNU_SOURCE macro is defined and the C++20 __cpp_char8_t feature test macro
|
||
is not defined (if __cpp_char8_t is defined, then char8_t is a builtin type).
|
||
|
||
* The functions arc4random, arc4random_buf, and arc4random_uniform have been
|
||
added. The functions wrap getrandom and/or /dev/urandom to return high-
|
||
quality randomness from the kernel.
|
||
|
||
* Support for LoongArch running on Linux has been added. This port requires
|
||
as least binutils 2.38, GCC 12, and Linux 5.19. Currently only hard-float
|
||
ABI is supported:
|
||
|
||
- loongarch64-linux-gnu
|
||
|
||
The LoongArch ABI is 64-bit little-endian.
|
||
|
||
Deprecated and removed features, and other changes affecting compatibility:
|
||
|
||
* Support for prelink will be removed in the next release; this includes
|
||
removal of the LD_TRACE_PRELINKING, and LD_USE_LOAD_BIAS, environment
|
||
variables and their functionality in the dynamic loader.
|
||
|
||
* The Linux kernel version check has been removed along with the
|
||
LD_ASSUME_KERNEL environment variable. The minimum kernel used to built
|
||
glibc is still provided through NT_GNU_ABI_TAG ELF note and also printed
|
||
when libc.so is issued directly.
|
||
|
||
* On Linux, The LD_LIBRARY_VERSION environment variable has been removed.
|
||
|
||
The following bugs are resolved with this release:
|
||
|
||
[14932] dynamic-link: dlsym(handle, "foo") and dlsym(RTLD_NEXT, "foo")
|
||
return different result with versioned "foo"
|
||
[16355] libc: syslog.h's SYSLOG_NAMES namespace violation and utter
|
||
mess
|
||
[23293] dynamic-link: aarch64: getauxval is broken when run as ld.so
|
||
./exe and ld.so adjusts argv on the stack
|
||
[24595] nptl: [2.28 Regression]: Deadlock in atfork handler which
|
||
calls dlclose
|
||
[25744] locale: mbrtowc with Big5-HKSCS returns 2 instead of 1 when
|
||
consuming the second byte of certain double byte characters
|
||
[25812] stdio: Libio vtable protection is sometimes only partially
|
||
enforced
|
||
[27054] libc: pthread_atfork handlers that call pthread_atfork
|
||
deadlock
|
||
[27924] dynamic-link: ld.so: Support DT_RELR relative relocation
|
||
format
|
||
[28128] build: declare_symbol_alias doesn't work for assembly codes
|
||
[28566] network: getnameinfo with NI_NOFQDN is not thread safe
|
||
[28752] nss: Segfault in getpwuid when stat fails
|
||
[28815] libc: realpath should not copy to resolved buffer on error
|
||
[28828] stdio: fputwc crashes
|
||
[28838] libc: FAIL: elf/tst-p_align3
|
||
[28845] locale: ld-monetary.c should be updated to match ISO C and
|
||
other standards.
|
||
[28850] libc: linux: __get_nprocs_sched reads uninitialized memory
|
||
from the stack
|
||
[28852] libc: getaddrinfo leaks memory with AI_ALL
|
||
[28853] libc: tst-spawn6 changes current foreground process group
|
||
(breaks test isolation)
|
||
[28857] libc: FAIL: elf/tst-audit24a
|
||
[28860] build: --enable-kernel=5.1.0 build fails because of missing
|
||
__convert_scm_timestamps
|
||
[28865] libc: linux: _SC_NPROCESSORS_CONF and _SC_NPROCESSORS_ONLN are
|
||
inaccurate without /sys and /proc
|
||
[28868] dynamic-link: Dynamic loader DFS algorithm segfaults on
|
||
missing libraries
|
||
[28880] libc: Program crashes if date beyond 2038
|
||
[28883] libc: sysdeps/unix/sysv/linux/select.c: __select64
|
||
!__ASSUME_TIME64_SYSCALLS && !__ASSUME_PSELECT fails on Microblaze
|
||
[28896] string: strncmp-avx2-rtm and wcsncmp-avx2-rtm fallback on non-
|
||
rtm variants when avoiding overflow
|
||
[28922] build: The .d dependency files aren't always generated
|
||
[28931] libc: hosts lookup broken for SUCCESS=CONTINUE and
|
||
SUCCESS=MERGE
|
||
[28936] build: nm: No such file
|
||
[28950] localedata: Add locale for ISO code "tok" (Toki Pona)
|
||
[28953] nss: NSS lookup result can be incorrect if function lookup
|
||
clobbers errno
|
||
[28970] math: benchtest: libmvec benchmark doesn't build with make
|
||
bench.
|
||
[28991] libc: sysconf(_SC_NPROCESSORS_CONF) should read
|
||
/sys/devices/system/cpu/possible
|
||
[28993] libc: closefrom() iterates until max int if no access to
|
||
/proc/self/fd/
|
||
[28996] libc: realpath fails to copy partial result to resolved buffer
|
||
on ENOENT and EACCES
|
||
[29027] math: [ia64] fabs fails with sNAN input
|
||
[29029] nptl: poll() spuriously returns EINTR during thread
|
||
cancellation and with cancellation disabled
|
||
[29030] string: GLIBC 2.35 regression - Fortify crash on certain valid
|
||
uses of mbsrtowcs (*** buffer overflow detected ***: terminated)
|
||
[29062] dynamic-link: Memory leak in _dl_find_object_update if object
|
||
is promoted to global scope
|
||
[29069] libc: fstatat64_time64_statx wrapper broken on MIPS N32 with
|
||
-D_FILE_OFFSET_BITS=64 and -D_TIME_BITS=64
|
||
[29071] dynamic-link: m68k: Removal of ELF_DURING_STARTUP optimization
|
||
broke ld.so
|
||
[29097] time: fchmodat does not handle 64 bit time_t for
|
||
AT_SYMLINK_NOFOLLOW
|
||
[29109] libc: posix_spawn() always returns 1 (EPERM) on clone()
|
||
failure
|
||
[29141] libc: _FORTIFY_SOURCE=3 fail for gcc 12/glibc 2.35
|
||
[29162] string: [PATCH] string.h syntactic error:
|
||
include/bits/string_fortified.h:110: error: expected ',' or ';'
|
||
before '__fortified_attr_access'
|
||
[29165] libc: [Regression] broken argv adjustment
|
||
[29187] dynamic-link: [regression] broken argv adjustment for nios2
|
||
[29193] math: sincos produces a different output than sin/cos
|
||
[29197] string: __strncpy_power9() uses uninitialised register vs18
|
||
value for filling after \0
|
||
[29203] libc: daemon is not y2038 aware
|
||
[29204] libc: getusershell is not 2038 aware
|
||
[29207] libc: posix_fallocate fallback implementation is not y2038
|
||
aware
|
||
[29208] libc: fpathconf(_PC_ASYNC_IO) is not y2038 aware
|
||
[29209] libc: isfdtype is not y2038 aware
|
||
[29210] network: ruserpass is not y2038 aware
|
||
[29211] libc: __open_catalog is not y2038 aware
|
||
[29213] libc: gconv_parseconfdir is not y2038 aware
|
||
[29214] nptl: pthread_setcanceltype fails to set type
|
||
[29225] network: Mistyped define statement in socket/sys/socket.h in
|
||
line 184
|
||
[29274] nptl: __read_chk is not a cancellation point
|
||
[29279] libc: undefined reference to `mbstowcs_chk' after
|
||
464d189b9622932a75302290625de84931656ec0
|
||
[29304] libc: mq_timedreceive does not handle 64 bit syscall return
|
||
correct for !__ASSUME_TIME64_SYSCALLS
|
||
[29403] libc: st_atim, st_mtim, st_ctim stat struct members are
|
||
missing on microblaze with largefile
|
||
|
||
Version 2.35
|
||
|
||
Major new features:
|
||
|
||
* Unicode 14.0.0 Support: Character encoding, character type info, and
|
||
transliteration tables are all updated to Unicode 14.0.0, using
|
||
generator scripts contributed by Mike FABIAN (Red Hat).
|
||
|
||
* Bump r_version in the debugger interface to 2 and add a new field,
|
||
r_next, support multiple namespaces.
|
||
|
||
* Support for the C.UTF-8 locale has been added to glibc. The locale
|
||
supports full code-point sorting for all valid Unicode code points. A
|
||
limitation in the framework for fnmatch, regexec, and regcomp requires
|
||
a compromise to save space and only ASCII-based range expressions are
|
||
supported for now (see bug 28255). The full size of the locale is
|
||
only ~400KiB, with 346KiB coming from LC_CTYPE information for
|
||
Unicode. This locale harmonizes downstream C.UTF-8 already shipping
|
||
in various downstream distributions. The locale is not built into
|
||
glibc, and must be installed.
|
||
|
||
* <math.h> functions that round their results to a narrower type, and
|
||
corresponding <tgmath.h> macros, are added from TS 18661-1:2014, TS
|
||
18661-3:2015 and draft ISO C2X:
|
||
|
||
- fsqrt, fsqrtl, dsqrtl and corresponding fMsqrtfN, fMsqrtfNx,
|
||
fMxsqrtfN and fMxsqrtfNx functions.
|
||
|
||
- ffma, ffmal, dfmal and corresponding fMfmafN, fMfmafNx, fMxfmafN and
|
||
fMxfmafNx functions.
|
||
|
||
* <math.h> functions for floating-point maximum and minimum,
|
||
corresponding to new operations in IEEE 754-2019, and corresponding
|
||
<tgmath.h> macros, are added from draft ISO C2X: fmaximum,
|
||
fmaximum_num, fmaximum_mag, fmaximum_mag_num, fminimum, fminimum_num,
|
||
fminimum_mag, fminimum_mag_num and corresponding functions for float,
|
||
long double, _FloatN and _FloatNx.
|
||
|
||
* <math.h> macros for single-precision float constants are added as a
|
||
GNU extension: M_Ef, M_LOG2Ef, M_LOG10Ef, M_LN2f, M_LN10f, M_PIf,
|
||
M_PI_2f, M_PI_4f, M_1_PIf, M_2_PIf, M_2_SQRTPIf, M_SQRT2f and
|
||
M_SQRT1_2f.
|
||
|
||
* The __STDC_IEC_60559_BFP__ and __STDC_IEC_60559_COMPLEX__ macros are
|
||
predefined as specified in TS 18661-1:2014.
|
||
|
||
* The exp10 functions in <math.h> now have a corresponding type-generic
|
||
macro in <tgmath.h>.
|
||
|
||
* The ISO C2X macro _PRINTF_NAN_LEN_MAX has been added to <stdio.h>.
|
||
|
||
* printf-family functions now support the %b format for output of
|
||
integers in binary, as specified in draft ISO C2X, and the %B variant
|
||
of that format recommended by draft ISO C2X.
|
||
|
||
* A new DSO sorting algorithm has been added in the dynamic linker that uses
|
||
topological sorting by depth-first search (DFS), solving performance issues
|
||
of the existing sorting algorithm when encountering particular circular
|
||
object dependency cases.
|
||
|
||
* A new tunable, glibc.rtld.dynamic_sort, can be used to select between
|
||
the two DSO sorting algorithms. The default setting of '2' uses the
|
||
new DFS-based algorithm. The setting '1' switches to the old
|
||
algorithm used in glibc 2.33 and earlier.
|
||
|
||
* ABI support for a new function '__memcmpeq'. '__memcmpeq' is meant
|
||
to be used by compilers for optimizing usage of 'memcmp' when its
|
||
return value is only used for its boolean status.
|
||
|
||
* Support for automatically registering threads with the Linux rseq
|
||
system call has been added. This system call is implemented starting
|
||
from Linux 4.18. The Restartable Sequences ABI accelerates user-space
|
||
operations on per-cpu data. It allows user-space to perform updates
|
||
on per-cpu data without requiring heavy-weight atomic operations.
|
||
Automatically registering threads allows all libraries, including
|
||
libc, to make immediate use of the rseq support by using the
|
||
documented ABI, via the __rseq_flags, __rseq_offset, and __rseq_size
|
||
variables. The GNU C Library manual has details on integration of
|
||
Restartable Sequences.
|
||
|
||
* A symbolic link to the dynamic linker is now installed under
|
||
/usr/bin/ld.so (or more precisely, '${bindir}/ld.so').
|
||
|
||
* All programs and the testsuite in glibc are now built as position independent
|
||
executables (PIE) by default on toolchains and architectures that support it.
|
||
Further, if the toolchain and architecture supports it, even static programs
|
||
are built as PIE and the resultant glibc can be used to build static PIE
|
||
executables. A new option --disable-default-pie has been added to disable
|
||
this behavior and get a non-PIE build. This option replaces
|
||
--enable-static-pie, which no longer has any effect on the build
|
||
configuration.
|
||
|
||
* On Linux, a new tunable, glibc.malloc.hugetlb, can be used to
|
||
either make malloc issue madvise plus MADV_HUGEPAGE on mmap and sbrk
|
||
or to use huge pages directly with mmap calls with the MAP_HUGETLB
|
||
flags). The former can improve performance when Transparent Huge Pages
|
||
is set to 'madvise' mode while the latter uses the system reserved
|
||
huge pages.
|
||
|
||
* The printf family of functions now handles the flagged %#m conversion
|
||
specifier, printing errno as an error constant (similar to strerrorname_np).
|
||
|
||
* The function _dl_find_object has been added. In-process unwinders
|
||
can use it to efficiently locate unwinding information for a code
|
||
address.
|
||
|
||
* Support for OpenRISC running on Linux has been added. This port requires
|
||
as least binutils 2.35, GCC 11, and Linux 5.4. Currently only soft-float
|
||
ABI is supported:
|
||
|
||
- or1k-linux-gnu
|
||
|
||
The OpenRISC ABI is 32-bit big-endian and uses 64-bit time (y2038 safe) and
|
||
64-bit file offsets (LFS default).
|
||
|
||
* A new configure option, --with-rtld-early-cflags, can be used to
|
||
specify additional compiler flags for building the early startup code
|
||
of the dynamic linker. On targets which have CPU compatibility
|
||
checks, this can help to ensure that proper diagnostics are printed if
|
||
the dynamic loader runs on an incompatible CPU.
|
||
|
||
* On Linux, the epoll_pwait2 function has been added. It is similar to
|
||
epoll_wait with the difference the timeout has nanoseconds resolution.
|
||
|
||
* The function posix_spawn_file_actions_addtcsetpgrp_np has been added,
|
||
enabling posix_spawn and posix_spawnp to set the controlling terminal in
|
||
the new process in a race free manner. This function is a GNU extension.
|
||
|
||
* Source fortification (_FORTIFY_SOURCE) level 3 is now available for
|
||
applications compiling with glibc and gcc 12 and later. Level 3 leverages
|
||
the __builtin_dynamic_object_size function to deliver additional
|
||
fortification balanced against additional runtime cost (checking non-constant
|
||
bounds).
|
||
|
||
* The audit libraries will avoid unnecessary slowdown if it is not required
|
||
PLT tracking (by not implementing the la_pltenter or la_pltexit callbacks).
|
||
|
||
Deprecated and removed features, and other changes affecting compatibility:
|
||
|
||
* On x86-64, the LD_PREFER_MAP_32BIT_EXEC environment variable support
|
||
has been removed since the first PT_LOAD segment is no longer executable
|
||
due to defaulting to -z separate-code.
|
||
|
||
* The r_version update in the debugger interface makes the glibc binary
|
||
incompatible with GDB binaries built without the following commits:
|
||
|
||
c0154a4a21a gdb: Don't assume r_ldsomap when r_version > 1 on Linux
|
||
4eb629d50d4 gdbserver: Check r_version < 1 for Linux debugger interface
|
||
|
||
when audit modules or dlmopen are used.
|
||
|
||
* Intel MPX support (lazy PLT, ld.so profile, and LD_AUDIT) has been removed.
|
||
|
||
* The --enable-static-pie option is no longer available. The glibc build
|
||
configuration script now automatically detects static-pie support in the
|
||
toolchain and architecture and enables it if available.
|
||
|
||
* The catchsegv script and associated libSegFault.so shared object have
|
||
been removed. There are widely-deployed out-of-process alternatives for
|
||
catching coredumps and backtraces.
|
||
|
||
* Support for prelink will be removed in the next release; this includes
|
||
removal of the LD_TRACE_PRELINKING, and LD_USE_LOAD_BIAS, environment
|
||
variables and their functionality in the dynamic loader.
|
||
|
||
* The LD_TRACE_PRELINKING environment variable has been removed. Similar
|
||
functionality to obtain the program mapping address can be achieved by
|
||
using LD_TRACE_LOADED_OBJECTS to value of 2.
|
||
|
||
* The LD_USE_LOAD_BIAS has been removed. The variable was mainly used to
|
||
support prelink PIE binaries.
|
||
|
||
Changes to build and runtime requirements:
|
||
|
||
* The audit module interface version LAV_CURRENT is increased to enable
|
||
proper bind-now support. The loader now advertises via the la_symbind
|
||
flags that PLT trace is not possible. New audit modules require the
|
||
new dynamic loader supporting the latest LAV_CURRENT version. Old audit
|
||
modules are still loaded for all targets except aarch64.
|
||
|
||
* The audit interface on aarch64 is extended to support both the indirect
|
||
result location register (x8) and NEON Q register. Old audit modules are
|
||
rejected by the loader. Audit modules must be rebuilt to use the newer
|
||
structure sizes and the latest module interface version for LAV_CURRENT.
|
||
|
||
Security related changes:
|
||
|
||
CVE-2022-23219: Passing an overlong file name to the clnt_create
|
||
legacy function could result in a stack-based buffer overflow when
|
||
using the "unix" protocol. Reported by Martin Sebor.
|
||
|
||
CVE-2022-23218: Passing an overlong file name to the svcunix_create
|
||
legacy function could result in a stack-based buffer overflow.
|
||
|
||
CVE-2021-3998: Passing a path longer than PATH_MAX to the realpath
|
||
function could result in a memory leak and potential access of
|
||
uninitialized memory. Reported by Qualys.
|
||
|
||
CVE-2021-3999: Passing a buffer of size exactly 1 byte to the getcwd
|
||
function may result in an off-by-one buffer underflow and overflow
|
||
when the current working directory is longer than PATH_MAX and also
|
||
corresponds to the / directory through an unprivileged mount
|
||
namespace. Reported by Qualys.
|
||
|
||
The following bugs are resolved with this release:
|
||
|
||
[12889] nptl: Race condition in pthread_kill
|
||
[14232] nptl: tst-cancel7 and tst-cancelx7 race condition
|
||
[14913] libc: [mips] Clean up MIPS 64-bit register-dump.h output
|
||
[15310] dynamic-link: _dl_sort_fini is O(n^3) causing slow exit when
|
||
many dsos
|
||
[15333] libc: Use 64-bit stat functions in installed programs
|
||
[15533] dynamic-link: LD_AUDIT introduces an avoidable performance
|
||
degradation
|
||
[15971] dynamic-link: No interface for debugger access to libraries
|
||
loaded with dlmopen
|
||
[17318] locale: [RFE] Provide a C.UTF-8 locale by default
|
||
[17645] dynamic-link: RFE: Improve performance of dynamic loader for
|
||
deeply nested DSO dependencies.
|
||
[19193] nptl: pthread_kill, pthread_cancel return ESRCH for a thread
|
||
ID whose lifetime has not ended
|
||
[22542] network: buffer overflow in sunrpc clnt_create
|
||
(CVE-2022-23219)
|
||
[22716] malloc: [PATCH] mtrace.pl: use TRACE_PRELINKING instead of
|
||
TRACE_LOADED_OBJECTS
|
||
[25947] malloc: memory leak in muntrace
|
||
[26045] math: fmaxf(inf, nan) does not always work
|
||
[26108] math: exp10() has problems with <tgmath.h>
|
||
[26779] build: benign use after realloc at localealias.c:329
|
||
[27609] dynamic-link: [2.32/2.33/2.34 Regression] In elf/dl-open.c
|
||
(_dl_open) we might use __LM_ID_CALLER to index GL(dl_ns)[]
|
||
[27945] build: build-many-glibcs.py doesn't configure GCC with
|
||
--enable-initfini-array
|
||
[27991] build: x86: sysdeps/x86/configure.ac breaks when
|
||
libc_cv_include_x86_isa_level is loaded from cache
|
||
[28036] nptl: Incorrect types for pthread_mutexattr_set/getrobust_np
|
||
in __REDIRECT_NTH macro
|
||
[28061] dynamic-link: A failing dlmopen called by an auditor crashed
|
||
[28062] dynamic-link: Suppress audit calls when a (new) namespace is
|
||
empty
|
||
[28126] libc: nftw aborts for paths longer than PATH_MAX
|
||
[28129] dynamic-link: Unnecessary check DT_DEBUG in ld.so
|
||
[28153] libc: [test] gmon/tst-gmon-gprof* may have a f3 line when
|
||
built with ld.lld
|
||
[28182] libc: _TIME_BITS=64 in C++ has issues with fcntl, ioctl, prctl
|
||
[28185] math: Inaccurate j0f function (again)
|
||
[28199] locale: iconvconfig prefix flag behaves differently in glibc
|
||
2.34
|
||
[28203] dynamic-link: aarch64: elf_machine_{load_address,dynamic}
|
||
should drop _GLOBAL_OFFSET_TABLE_[0] in favor of __ehdr_start for
|
||
robustness
|
||
[28213] librt: NULL pointer dereference in mq_notify (CVE-2021-38604)
|
||
[28223] libc: mips: clone does not align stack
|
||
[28253] dynamic-link: Missing colon in LD_SHOW_AUXV output after
|
||
AT_MINSIGSTKSZ
|
||
[28256] malloc: Conditional jump or move depends on uninitialised
|
||
value(s) in __GI___tunables_init
|
||
[28260] build: io/tst-closefrom, misc/tst-close_range, posix/tst-
|
||
spawn5 fail if stray fds are open
|
||
[28310] libc: Do not use affinity mask for sysconf
|
||
(_SC_NPROCESSORS_CONF)
|
||
[28338] time: undefined behavior in __tzfile_compute with oddball TZif
|
||
file
|
||
[28340] dynamic-link: ld.so crashes while loading a DSO with a read-
|
||
only dynamic section
|
||
[28349] libc: Segfault for ping -R on qemux86 caused by recvmsg()
|
||
[28350] libc: ping receives SIGABRT on lib32-qemux86-64 caused by
|
||
recvmsg()
|
||
[28353] network: Race condition on __opensock
|
||
[28357] dynamic-link: deadlock between pthread_create and ctors
|
||
[28358] math: f64xdivf128 and f64xmulf128 spurious underflows
|
||
[28361] nptl: Fix for bug 12889 causes setxid deadlock
|
||
[28368] build: -Waddress instances in stdio-common/vfprintf-internal.c
|
||
[28390] localedata: Update locale data to Unicode 14.0.0
|
||
[28397] math: tgmath.h should not define fmaxmag, fminmag macros for
|
||
C2X
|
||
[28400] libc: [2.35 Regression] string/test-strncasecmp: cannot set
|
||
locale "en_US.UTF-8"
|
||
[28407] nptl: pthread_kill assumes that kill (getpid ()) is equivalent
|
||
to tgkill (getpid (), gettid())
|
||
[28455] dynamic-link: -Wl,--enable-new-dtags doesn't work
|
||
[28457] dynamic-link: Missing reldepmod4.so dependency for
|
||
globalmod1.so
|
||
[28469] time: linux: struct timex is not correctly set for 32-bit
|
||
systems with TIMESIZE=64
|
||
[28470] regex: Buffer read overrun in regular expression searching
|
||
[28475] string: Incorrect access attribute on memfrob
|
||
[28524] libc: Conversion from ISO-2022-JP-3 with iconv may emit
|
||
spurious NUL character on state reset
|
||
[28532] libc: powerpc64[le]: CFI for assembly templated syscalls is
|
||
incorrect
|
||
[28550] dynamic-link: FAIL: tst-dso-
|
||
ordering9_112-ecbda(GLIBC_TUNABLES=glibc.rtld.dynamic_sort=1)
|
||
execution test
|
||
[28554] build: Undefined generate-md5
|
||
[28572] libc: Misaligned accesses in test-memcpy and test-mempcpy on
|
||
hppa
|
||
[28607] nptl: Masked signals are delivered on thread exit
|
||
[28624] libc: openjdk 8/9 assume uni processor and gets stuck due to
|
||
lack of cpu counting /proc fallback with glibc 2.34
|
||
[28646] string: [2.35 Regression] mock -r fedora-36-x86_64
|
||
/tmp/java-1.8.0-openjdk-1.8.0.312.b07-2.fc36.src.rpm& fails to build
|
||
[28648] dynamic-link: Running ld.so on statically linked binaries
|
||
crashes
|
||
[28656] dynamic-link: LD_PREFER_MAP_32BIT_EXEC no longer works due to
|
||
binutils changes
|
||
[28676] dynamic-link: p_align on PT_LOAD segment in DSO isn't honored
|
||
[28678] nptl: nptl/tst-create1 hangs sporadically
|
||
[28688] dynamic-link: PT_LOAD p_align check is too strict
|
||
[28700] nss: "dns [!UNAVAIL=return] files" default for hosts database
|
||
is not useful
|
||
[28707] time: assert in tzfile.c __tzfile_read striking with truncated
|
||
timezones generated by tzcode-2021d and later
|
||
[28713] math: GCC 12 miscompiles libm
|
||
[28732] dynamic-link: FAIL: elf/tst-dl_find_object
|
||
[28738] build: LIBC_LINKER_FEATURE doesn't work on linker -z option
|
||
[28745] dynamic-link: _dl_find_object miscompilation on powerpc64le
|
||
[28746] libc: _FORTIFY_SOURCE does not work for stpcpy
|
||
[28749] libc: Inconsistency detected by ld.so: rtld.c: 1632: dl_main:
|
||
Assertion `GL(dl_rtld_map).l_libname' failed!
|
||
[28755] string: overflow bug in wcsncmp_avx2 and wcsncmp_evex
|
||
[28757] nptl: GDB printer tests failed with new GDB
|
||
[28765] math: x86_64 libmvec atan2 accuracy
|
||
[28766] manual: Document libmvec accuracy
|
||
[28768] network: Buffer overflow in svcunix_create with long pathnames
|
||
(CVE-2022-23218)
|
||
[28769] libc: Off-by-one buffer overflow/underflow in getcwd()
|
||
(CVE-2021-3999)
|
||
[28770] libc: Unexpected return value from realpath() for too long
|
||
results (CVE-2021-3998)
|
||
[28771] libc: %ebx optimization macros are incompatible with .altmacro
|
||
in Systemtap probes
|
||
[28780] build: --disable-default-pie doesn't work on static programs
|
||
[28782] libc: x86-64 ISA level for glibc itself is always
|
||
x86-64-baseline
|
||
[28792] glob: possible wrong behaviour with patterns with double [
|
||
with no closing ]
|
||
[28837] libc: FAIL: socket/tst-socket-timestamp-compat
|
||
[28847] locale: Empty mon_decimal_point in LC_MONETARY results in non-
|
||
empty mon_decimal_point_wc
|
||
|
||
|
||
Version 2.34
|
||
|
||
Major new features:
|
||
|
||
* In order to support smoother in-place-upgrades and to simplify
|
||
the implementation of the runtime all functionality formerly
|
||
implemented in the libraries libpthread, libdl, libutil, libanl has
|
||
been integrated into libc. New applications do not need to link with
|
||
-lpthread, -ldl, -lutil, -lanl anymore. For backwards compatibility,
|
||
empty static archives libpthread.a, libdl.a, libutil.a, libanl.a are
|
||
provided, so that the linker options keep working. Applications which
|
||
have been linked against glibc 2.33 or earlier continue to load the
|
||
corresponding shared objects (which are now empty). The integration
|
||
of those libraries into libc means that additional symbols become
|
||
available by default. This can cause applications that contain weak
|
||
references to take unexpected code paths that would only have been
|
||
used in previous glibc versions when e.g. preloading libpthread.so.0,
|
||
potentially exposing application bugs.
|
||
|
||
* When _DYNAMIC_STACK_SIZE_SOURCE or _GNU_SOURCE are defined,
|
||
PTHREAD_STACK_MIN is no longer constant and is redefined to
|
||
sysconf(_SC_THREAD_STACK_MIN). This supports dynamic sized register
|
||
sets for modern architectural features like Arm SVE.
|
||
|
||
* Add _SC_MINSIGSTKSZ and _SC_SIGSTKSZ. When _DYNAMIC_STACK_SIZE_SOURCE
|
||
or _GNU_SOURCE are defined, MINSIGSTKSZ and SIGSTKSZ are no longer
|
||
constant on Linux. MINSIGSTKSZ is redefined to sysconf(_SC_MINSIGSTKSZ)
|
||
and SIGSTKSZ is redefined to sysconf (_SC_SIGSTKSZ). This supports
|
||
dynamic sized register sets for modern architectural features like
|
||
Arm SVE.
|
||
|
||
* The dynamic linker implements the --list-diagnostics option, printing
|
||
a dump of information related to IFUNC resolver operation and
|
||
glibc-hwcaps subdirectory selection.
|
||
|
||
* On Linux, the function execveat has been added. It operates similar to
|
||
execve and it is is already used to implement fexecve without requiring
|
||
/proc to be mounted. However, different than fexecve, if the syscall is not
|
||
supported by the kernel an error is returned instead of trying a fallback.
|
||
|
||
* The ISO C2X function timespec_getres has been added.
|
||
|
||
* The feature test macro __STDC_WANT_IEC_60559_EXT__, from draft ISO
|
||
C2X, is supported to enable declarations of functions defined in Annex F
|
||
of C2X. Those declarations are also enabled when
|
||
__STDC_WANT_IEC_60559_BFP_EXT__, as specified in TS 18661-1, is
|
||
defined, and when _GNU_SOURCE is defined.
|
||
|
||
* On powerpc64*, glibc can now be compiled without scv support using the
|
||
--disable-scv configure option.
|
||
|
||
* Add support for 64-bit time_t on configurations like x86 where time_t
|
||
is traditionally 32-bit. Although time_t still defaults to 32-bit on
|
||
these configurations, this default may change in future versions.
|
||
This is enabled with the _TIME_BITS preprocessor macro set to 64 and is
|
||
only supported when LFS (_FILE_OFFSET_BITS=64) is also enabled. It is
|
||
only enabled for Linux and the full support requires a minimum kernel
|
||
version of 5.1.
|
||
|
||
* The main gconv-modules file in glibc now contains only a small set of
|
||
essential converter modules and the rest have been moved into a supplementary
|
||
configuration file gconv-modules-extra.conf in the gconv-modules.d directory
|
||
in the same GCONV_PATH. Similarly, external converter modules directories
|
||
may have supplementary configuration files in a gconv-modules.d directory
|
||
with names ending with .conf to logically classify the converter modules in
|
||
that directory.
|
||
|
||
* On Linux, a new tunable, glibc.pthread.stack_cache_size, can be used
|
||
to configure the size of the thread stack cache.
|
||
|
||
* The function _Fork has been added as an async-signal-safe fork replacement
|
||
since Austin Group issue 62 dropped the async-signal-safe requirement for
|
||
fork (and it will be included in the future POSIX standard). The new _Fork
|
||
function does not run any atfork function neither resets any internal state
|
||
or lock (such as the malloc one), and only sets up a minimal state required
|
||
to call async-signal-safe functions (such as raise or execve). This function
|
||
is currently a GNU extension.
|
||
|
||
* On Linux, the close_range function has been added. It allows efficiently
|
||
closing a range of file descriptors on recent kernels (version 5.9).
|
||
|
||
* The function closefrom has been added. It closes all file descriptors
|
||
greater than or equal to a given integer. This function is a GNU extension,
|
||
although it is also present in other systems.
|
||
|
||
* The posix_spawn_file_actions_addclosefrom_np function has been added,
|
||
enabling posix_spawn and posix_spawnp to close all file descriptors greater
|
||
than or equal to a given integer. This function is a GNU extension,
|
||
although Solaris also provides a similar function.
|
||
|
||
* When invoked explicitly, the dynamic linker now uses the kernel to
|
||
execute programs that do not have any dynamic dependency (that is,
|
||
they are statically linked). This feature is Linux-specific.
|
||
|
||
Deprecated and removed features, and other changes affecting compatibility:
|
||
|
||
* The function pthread_mutex_consistent_np has been deprecated; programs
|
||
should use the equivalent standard function pthread_mutex_consistent
|
||
instead.
|
||
|
||
* The function pthread_mutexattr_getrobust_np has been deprecated;
|
||
programs should use the equivalent standard function
|
||
pthread_mutexattr_getrobust instead.
|
||
|
||
* The function pthread_mutexattr_setrobust_np has been deprecated;
|
||
programs should use the equivalent standard function
|
||
pthread_mutexattr_setrobust instead.
|
||
|
||
* The function pthread_yield has been deprecated; programs should use
|
||
the equivalent standard function sched_yield instead.
|
||
|
||
* The function inet_neta declared in <arpa/inet.h> has been deprecated.
|
||
|
||
* Various rarely-used functions declared in <resolv.h> and
|
||
<arpa/nameser.h> have been deprecated. Applications are encouraged to
|
||
use dedicated DNS processing libraries if applicable. For <resolv.h>,
|
||
this affects the functions dn_count_labels, fp_nquery, fp_query,
|
||
fp_resstat, hostalias, loc_aton, loc_ntoa, p_cdname, p_cdnname,
|
||
p_class, p_fqname, p_fqnname, p_option, p_query, p_rcode, p_time,
|
||
p_type, putlong, putshort, res_hostalias, res_isourserver,
|
||
res_nameinquery, res_queriesmatch, res_randomid, sym_ntop, sym_ntos,
|
||
sym_ston. For <arpa/nameser.h>, the functions ns_datetosecs,
|
||
ns_format_ttl, ns_makecanon, ns_parse_ttl, ns_samedomain, ns_samename,
|
||
ns_sprintrr, ns_sprintrrf, ns_subdomain have been deprecated.
|
||
|
||
* Various symbols previously defined in libresolv have been moved to libc
|
||
in order to prepare for libresolv moving entirely into libc (see earlier
|
||
entry for merging libraries into libc). The symbols __dn_comp,
|
||
__dn_expand, __dn_skipname, __res_dnok, __res_hnok, __res_mailok,
|
||
__res_mkquery, __res_nmkquery, __res_nquery, __res_nquerydomain,
|
||
__res_nsearch, __res_nsend, __res_ownok, __res_query, __res_querydomain,
|
||
__res_search, __res_send formerly in libresolv have been renamed and no
|
||
longer have a __ prefix. They are now available in libc.
|
||
|
||
* The pthread cancellation handler is now installed with SA_RESTART and
|
||
pthread_cancel will always send the internal SIGCANCEL on a cancellation
|
||
request. It should not be visible to applications since the cancellation
|
||
handler should either act upon cancellation (if asynchronous cancellation
|
||
is enabled) or ignore the cancellation internal signal. However there are
|
||
buggy kernel interfaces (for instance some CIFS versions) that could still
|
||
see a spurious EINTR error when cancellation interrupts a blocking syscall.
|
||
|
||
* Previously, glibc installed its various shared objects under versioned
|
||
file names such as libc-2.33.so. The ABI sonames (e.g., libc.so.6)
|
||
were provided as symbolic links. Starting with glibc 2.34, the shared
|
||
objects are installed under their ABI sonames directly, without
|
||
symbolic links. This increases compatibility with distribution
|
||
package managers that delete removed files late during the package
|
||
upgrade or downgrade process.
|
||
|
||
* The symbols mallwatch and tr_break are now deprecated and no longer used in
|
||
mtrace. Similar functionality can be achieved by using conditional
|
||
breakpoints within mtrace functions from within gdb.
|
||
|
||
* The __morecore and __after_morecore_hook malloc hooks and the default
|
||
implementation __default_morecore have been removed from the API. Existing
|
||
applications will continue to link against these symbols but the interfaces
|
||
no longer have any effect on malloc.
|
||
|
||
* Debugging features in malloc such as the MALLOC_CHECK_ environment variable
|
||
(or the glibc.malloc.check tunable), mtrace() and mcheck() have now been
|
||
disabled by default in the main C library. Users looking to use these
|
||
features now need to preload a new debugging DSO libc_malloc_debug.so to get
|
||
this functionality back.
|
||
|
||
* The deprecated functions malloc_get_state and malloc_set_state have been
|
||
moved from the core C library into libc_malloc_debug.so. Legacy applications
|
||
that still use these functions will now need to preload libc_malloc_debug.so
|
||
in their environment using the LD_PRELOAD environment variable.
|
||
|
||
* The deprecated memory allocation hooks __malloc_hook, __realloc_hook,
|
||
__memalign_hook and __free_hook are now removed from the API. Compatibility
|
||
symbols are present to support legacy programs but new applications can no
|
||
longer link to these symbols. These hooks no longer have any effect on glibc
|
||
functionality. The malloc debugging DSO libc_malloc_debug.so currently
|
||
supports hooks and can be preloaded to get this functionality back for older
|
||
programs. However this is a transitional measure and may be removed in a
|
||
future release of the GNU C Library. Users may port away from these hooks by
|
||
writing and preloading their own malloc interposition library.
|
||
|
||
Changes to build and runtime requirements:
|
||
|
||
* On Linux, the shm_open, sem_open, and related functions now expect the
|
||
file shared memory file system to be mounted at /dev/shm. These functions
|
||
no longer search among the system's mount points for a suitable
|
||
replacement if /dev/shm is not available.
|
||
|
||
Security related changes:
|
||
|
||
CVE-2021-27645: The nameserver caching daemon (nscd), when processing
|
||
a request for netgroup lookup, may crash due to a double-free,
|
||
potentially resulting in degraded service or Denial of Service on the
|
||
local system. Reported by Chris Schanzle.
|
||
|
||
CVE-2021-33574: The mq_notify function has a potential use-after-free
|
||
issue when using a notification type of SIGEV_THREAD and a thread
|
||
attribute with a non-default affinity mask.
|
||
|
||
CVE-2021-35942: The wordexp function may overflow the positional
|
||
parameter number when processing the expansion resulting in a crash.
|
||
Reported by Philippe Antoine.
|
||
|
||
The following bugs are resolved with this release:
|
||
|
||
[4737] libc: fork is not async-signal-safe
|
||
[5781] math: Slow dbl-64 sin/cos/sincos for special values
|
||
[10353] libc: Methods for deleting all file descriptors greater than
|
||
given integer (closefrom)
|
||
[14185] glob: fnmatch() fails when '*' wildcard is applied on the file
|
||
name containing multi-byte character(s)
|
||
[14469] math: Inaccurate j0f function
|
||
[14470] math: Inaccurate j1f function
|
||
[14471] math: Inaccurate y0f function
|
||
[14472] math: Inaccurate y1f function
|
||
[14744] nptl: kill -32 $pid or kill -33 $pid on a process cancels a
|
||
random thread
|
||
[15271] dynamic-link: dlmopen()ed shared library with LM_ID_NEWLM
|
||
crashes if it fails dlsym() twice
|
||
[15648] nptl: multiple definition of `__lll_lock_wait_private'
|
||
[16063] nptl: Provide a pthread_once variant in libc directly
|
||
[17144] libc: syslog is not thread-safe if NO_SIGPIPE is not defined
|
||
[17145] libc: syslog with LOG_CONS leaks console file descriptor
|
||
[17183] manual: description of ENTRY struct in <search.h> in glibc
|
||
manual is incorrect
|
||
[18435] nptl: pthread_once hangs when init routine throws an exception
|
||
[18524] nptl: Missing calloc error checking in
|
||
__cxa_thread_atexit_impl
|
||
[19329] dynamic-link: dl-tls.c assert failure at concurrent
|
||
pthread_create and dlopen
|
||
[19366] nptl: returning from a thread should disable cancellation
|
||
[19511] nptl: 8MB memory leak in pthread_create in case of failure
|
||
when non-root user changes priority
|
||
[20802] dynamic-link: getauxval NULL pointer dereference after static
|
||
dlopen
|
||
[20813] nptl: pthread_exit is inconsistent between libc and libpthread
|
||
[22057] malloc: malloc_usable_size is broken with mcheck
|
||
[22668] locale: LC_COLLATE: the last character of ellipsis is not
|
||
ordered correctly
|
||
[23323] libc: [RFE] CSU startup hardening.
|
||
[23328] malloc: Remove malloc hooks and ensure related APIs return no
|
||
data.
|
||
[23462] dynamic-link: Static binary with dynamic string tokens ($LIB,
|
||
$PLATFORM, $ORIGIN) crashes
|
||
[23489] libc: "gcc -lmcheck" aborts on free when using posix_memalign
|
||
[23554] nptl: pthread_getattr_np reports wrong stack size with
|
||
MULTI_PAGE_ALIASING
|
||
[24106] libc: Bash interpreter in ldd script is taken from host
|
||
[24773] dynamic-link: dlerror in an secondary namespace does not use
|
||
the right free implementation
|
||
[25036] localedata: Update collation order for Swedish
|
||
[25383] libc: where_is_shmfs/__shm_directory/SHM_GET_NAME may cause
|
||
shm_open to pick wrong directory
|
||
[25680] dynamic-link: ifuncmain9picstatic and ifuncmain9picstatic
|
||
crash in IFUNC resolver due to stack canary (--enable-stack-
|
||
protector=all)
|
||
[26874] build: -Warray-bounds in _IO_wdefault_doallocate
|
||
[26983] math: [x86_64] x86_64 tgamma has too large ULP error
|
||
[27111] dynamic-link: pthread_create and tls access use link_map
|
||
objects that may be concurrently freed by dlclose
|
||
[27132] malloc: memusagestat is linked to system librt, leading to
|
||
undefined symbols on major version upgrade
|
||
[27136] dynamic-link: dtv setup at thread creation may leave an entry
|
||
uninitialized
|
||
[27249] libc: libSegFault.so does not output signal number properly
|
||
[27304] nptl: pthread_cond_destroy does not pass private flag to futex
|
||
system calls
|
||
[27318] dynamic-link: glibc fails to load binaries when built with
|
||
-march=sandybridge: CPU ISA level is lower than required
|
||
[27343] nss: initgroups() SIGSEGVs when called on a system without
|
||
nsswich.conf (in a chroot)
|
||
[27346] dynamic-link: x86: PTWRITE feature check is missing
|
||
[27389] network: NSS chroot hardening causes regressions in chroot
|
||
deployments
|
||
[27403] dynamic-link: aarch64: tlsdesc htab is not freed on dlclose
|
||
[27444] libc: sysconf reports unsupported option (-1) for
|
||
_SC_LEVEL1_ICACHE_LINESIZE on X86 since v2.33
|
||
[27462] nscd: double-free in nscd (CVE-2021-27645)
|
||
[27468] malloc: aarch64: realloc crash with heap tagging: FAIL:
|
||
malloc/tst-malloc-thread-fail
|
||
[27498] dynamic-link: __dl_iterate_phdr lacks unwinding information
|
||
[27511] libc: S390 memmove assumes Vector Facility when MIE Facility 3
|
||
is present
|
||
[27522] glob: glob, glob64 incorrectly marked as __THROW
|
||
[27555] dynamic-link: Static tests fail with --enable-stack-
|
||
protector=all
|
||
[27559] libc: fstat(AT_FDCWD) succeeds (it shouldn't) and returns
|
||
information for the current directory
|
||
[27577] dynamic-link: elf/ld.so --help doesn't work
|
||
[27605] libc: tunables can't control xsave/xsavec selection in
|
||
dl_runtime_resolve_*
|
||
[27623] libc: powerpc: Missing registers in sc[v] clobbers list
|
||
[27645] libc: [linux] sysconf(_SC_NPROCESSOR...) breaks down on
|
||
containers
|
||
[27646] dynamic-link: Linker error for non-existing NSS symbols (e.g.
|
||
_nss_files_getcanonname_r) from within a dlmopen namespace.
|
||
[27648] libc: FAIL: misc/tst-select
|
||
[27650] stdio: vfscanf returns too early if a match is longer than
|
||
INT_MAX
|
||
[27651] libc: Performance regression after updating to 2.33
|
||
[27655] string: Wrong size calculation in string/test-strnlen.c
|
||
[27706] libc: select fails to update timeout on error
|
||
[27709] libc: arm: FAIL: debug/tst-longjmp_chk2
|
||
[27721] dynamic-link: x86: ld_audit ignores bind now for TLSDESC and
|
||
tries resolving them lazily
|
||
[27744] nptl: Support different libpthread/ld.so load orders in
|
||
libthread_db
|
||
[27749] libc: Data race __run_exit_handlers
|
||
[27761] libc: getconf: Segmentation fault when passing '-vq' as
|
||
argument
|
||
[27832] nss: makedb.c:797:7: error: 'writev' specified size 4294967295
|
||
exceeds maximum object size 2147483647
|
||
[27870] malloc: MALLOC_CHECK_ causes realloc(valid_ptr, TOO_LARGE) to
|
||
not set ENOMEM
|
||
[27872] build: Obsolete configure option --enable-stackguard-
|
||
randomization
|
||
[27873] build: tst-cpu-features-cpuinfo fail when building on AMD cpu
|
||
[27882] localedata: Use U+00AF MACRON in more EBCDIC charsets
|
||
[27892] libc: powerpc: scv ABI error handling fails to check
|
||
IS_ERR_VALUE
|
||
[27896] nptl: mq_notify does not handle separately allocated thread
|
||
attributes (CVE-2021-33574)
|
||
[27901] libc: TEST_STACK_ALIGN doesn't work
|
||
[27902] libc: The x86-64 clone wrapper fails to align child stack
|
||
[27914] nptl: Install SIGSETXID handler with SA_ONSTACK
|
||
[27939] libc: aarch64: clone does not align the stack
|
||
[27968] libc: s390x: clone does not align the stack
|
||
[28011] libc: Wild read in wordexp (parse_param) (CVE-2021-35942)
|
||
[28024] string: s390(31bit): Wrong result of memchr (MEMCHR_Z900_G5)
|
||
with n >= 0x80000000
|
||
[28028] malloc: malloc: tcache shutdown sequence does not work if the
|
||
thread never allocated anything
|
||
[28033] libc: Need to check RTM_ALWAYS_ABORT for RTM
|
||
[28064] string: x86_64:wcslen implementation list has wcsnlen
|
||
[28067] libc: FAIL: posix/tst-spawn5
|
||
[28068] malloc: FAIL: malloc/tst-mallocalign1-mcheck
|
||
[28071] time: clock_gettime, gettimeofday, time lost vDSO acceleration
|
||
on older kernels
|
||
[28075] nis: Out-of-bounds static buffer read in nis_local_domain
|
||
[28089] build: tst-tls20 fails when linker defaults to --as-needed
|
||
[28090] build: elf/tst-cpu-features-cpuinfo-static fails on certain
|
||
AMD64 cpus
|
||
[28091] network: ns_name_skip may return 0 for domain names without
|
||
terminator
|
||
|
||
|
||
Version 2.33
|
||
|
||
Major new features:
|
||
|
||
* The dynamic linker accepts the --list-tunables argument which prints
|
||
all the supported tunables. This option is disable if glibc is
|
||
configured with tunables disabled (--enable-tunables=no).
|
||
|
||
* The dynamic linker accepts the --argv0 argument and provides opportunity
|
||
to change argv[0] string.
|
||
|
||
* The dynamic linker loads optimized implementations of shared objects
|
||
from subdirectories under the glibc-hwcaps directory on the library
|
||
search path if the system's capabilities meet the requirements for
|
||
that subdirectory. Initially supported subdirectories include
|
||
"power9" and "power10" for the powerpc64le-linux-gnu architecture,
|
||
"z13", "z14", "z15" for s390x-linux-gnu, and "x86-64-v2", "x86-64-v3",
|
||
"x86-64-v4" for x86_64-linux-gnu. In the x86_64-linux-gnu case, the
|
||
subdirectory names correspond to the vendor-independent x86-64
|
||
microarchitecture levels defined in the x86-64 psABI supplement.
|
||
|
||
* The new --help option of the dynamic linker provides usage and
|
||
information and library search path diagnostics.
|
||
|
||
* The mallinfo2 function is added to report statistics as per mallinfo,
|
||
but with larger field widths to accurately report values that are
|
||
larger than fit in an integer.
|
||
|
||
* Add <sys/platform/x86.h> to provide query macros for x86 CPU features.
|
||
|
||
* Support for the RISC-V ISA running on Linux has been expanded to run on
|
||
32-bit hardware. This is supported for the following ISA and ABI pairs:
|
||
|
||
- rv32imac ilp32
|
||
- rv32imafdc ilp32
|
||
- rv32imafdc ilp32d
|
||
|
||
The 32-bit RISC-V port requires at least Linux 5.4, GCC 7.1 and binutils
|
||
2.28.
|
||
|
||
* A new fortification level _FORTIFY_SOURCE=3 is available. At this level,
|
||
glibc may use additional checks that may have an additional performance
|
||
overhead. At present these checks are available only on LLVM 9 and later.
|
||
The latest GCC available at this time (10.2) does not support this level of
|
||
fortification.
|
||
|
||
Deprecated and removed features, and other changes affecting compatibility:
|
||
|
||
* The mallinfo function is marked deprecated. Callers should call
|
||
mallinfo2 instead.
|
||
|
||
* When dlopen is used in statically linked programs, alternative library
|
||
implementations from HWCAP subdirectories are no longer loaded.
|
||
Instead, the default implementation is used.
|
||
|
||
* The deprecated <sys/vtimes.h> header and the function vtimes have been
|
||
removed. To support old binaries, the vtimes function continues to exist
|
||
as a compatibility symbol. Applications should use the getrlimit or
|
||
prlimit.
|
||
|
||
* Following a change in the tzdata 2018a release upstream, the zdump
|
||
program is now installed in the /usr/bin subdirectory. Previously,
|
||
the /usr/sbin subdirectory was used.
|
||
|
||
* On s390(x), the type float_t is now derived from the macro
|
||
__FLT_EVAL_METHOD__ that is defined by the compiler, instead of being
|
||
hardcoded to double. This does not affect the ABI of any libraries
|
||
that are part of the GNU C Library, but may affect the ABI of other
|
||
libraries that use this type in their interfaces. The new definition
|
||
improves consistency with compiler behavior in many scenarios.
|
||
|
||
* A future version of glibc will stop loading shared objects from the
|
||
"tls" subdirectories on the library search path, the subdirectory that
|
||
corresponds to the AT_PLATFORM system name, and also stop employing
|
||
the legacy AT_HWCAP search mechanism. Applications should switch to
|
||
the new glibc-hwcaps mechanism instead; if they do not do that, only
|
||
the baseline version (directly from the search path directory) will be
|
||
loaded.
|
||
|
||
Changes to build and runtime requirements:
|
||
|
||
* On Linux, the system administrator needs to configure /dev/pts with
|
||
the intended access modes for pseudo-terminals. glibc no longer
|
||
attempts to adjust permissions of terminal devices. The previous glibc
|
||
defaults ("tty" group, user read/write and group write) already
|
||
corresponded to what most systems used, so that grantpt did not
|
||
perform any adjustments.
|
||
|
||
* On Linux, the posix_openpt and getpt functions no longer attempt to
|
||
use legacy (BSD) pseudo-terminals and assume that if /dev/ptmx exists
|
||
(and pseudo-terminals are supported), a devpts file system is mounted
|
||
on /dev/pts. Current systems already meet these requirements.
|
||
|
||
* s390x requires GCC 7.1 or newer. See gcc Bug 98269.
|
||
|
||
Security related changes:
|
||
|
||
CVE-2021-3326: An assertion failure during conversion from the
|
||
ISO-20220-JP-3 character set using the iconv function has been fixed.
|
||
This assertion was triggered by certain valid inputs in which the
|
||
converted output contains a combined sequence of two wide characters
|
||
crossing a buffer boundary. Reported by Tavis Ormandy.
|
||
|
||
CVE-2020-27618: An infinite loop has been fixed in the iconv program when
|
||
invoked with input containing redundant shift sequences in the IBM1364,
|
||
IBM1371, IBM1388, IBM1390, or IBM1399 character sets.
|
||
|
||
CVE-2020-29562: An assertion failure has been fixed in the iconv function
|
||
when invoked with UCS4 input containing an invalid character.
|
||
|
||
CVE-2019-25013: A buffer overflow has been fixed in the iconv function when
|
||
invoked with EUC-KR input containing invalid multibyte input sequences.
|
||
|
||
The following bugs are resolved with this release:
|
||
|
||
[10635] libc: realpath portability patches
|
||
[16124] dynamic-link: ld.so should allow to change argv[0]
|
||
[17924] malloc: 'free' should not set errno
|
||
[18683] libc: Linux faccessat implementation can incorrectly ignore
|
||
AT_EACCESS
|
||
[22899] libc: Use 64-bit readdir() in generic POSIX getcwd()
|
||
[23091] hurd: missing waitid support
|
||
[23249] libc: Epyc and other current AMD CPUs do not select the
|
||
"haswell" platform subdirectory
|
||
[24080] dynamic-link: Definition of "haswell" platform is inconsistent
|
||
with GCC
|
||
[24202] libc: m68k setjmp() saves incorrect 'a5' register in --enable-
|
||
stack-protector=all
|
||
[24941] libc: Make grantpt usable after multi-threaded fork in more
|
||
cases
|
||
[24970] libc: realpath mishandles EOVERFLOW; stat not needed anyway
|
||
[24973] locale: iconv encounters segmentation fault when converting
|
||
0x00 0xfe in EUC-KR to UTF-8 (CVE-2019-25013)
|
||
[25399] string: undefined reference to `__warn_memset_zero_len' when
|
||
changing gnuc version
|
||
[25859] libc: glibc parser for /sys/devices/system/cpu/online is
|
||
incorrect
|
||
[25938] dynamic-link: ld.so.cache should store meaning of hwcap mask
|
||
bits
|
||
[25971] libc: s390 bits/hwcap.h out of sync with kernel
|
||
[26053] libc: unlockpt fails with ENOTTY for non-ptmx descriptors
|
||
[26100] libc: Race in syslog(3) with regards to tag printing.
|
||
[26124] libc: Export <cpu-features.h>
|
||
[26130] nscd: Inconsistent nscd cache during pruning
|
||
[26203] libc: GLRO(dl_x86_cpu_features) may not be initialized
|
||
[26224] locale: iconv hangs when converting some invalid inputs from
|
||
several IBM character sets (CVE-2020-27618)
|
||
[26341] libc: realpath cyclically call __alloca(path_max) to consume
|
||
too much stack space
|
||
[26343] manual: invalid documented return type for strerrorname_np(),
|
||
strerrordesc_np(), sigdescr_np(), sigabbrev_np()
|
||
[26376] libc: Namespace violation in stdio.h and sys/stat.h if build
|
||
with optimization.
|
||
[26383] locale: bind_textdomain_codeset doesn't accept //TRANSLIT
|
||
anymore
|
||
[26394] time: [2.33 Regression] FAIL: nptl/tst-join14
|
||
[26534] math: libm.so 2.32 SIGILL in pow() due to FMA4 instruction on
|
||
non-FMA4 system
|
||
[26552] dynamic-link: CPU_FEATURE_USABLE_P should be more conservative
|
||
[26553] libc: mtx_init allows type set to "mtx_recursive" only
|
||
[26555] string: strerrorname_np does not return the documented value
|
||
[26592] libc: pointer arithmetic overflows in realpath
|
||
[26600] network: Transaction ID collisions cause slow DNS lookups in
|
||
getaddrinfo
|
||
[26606] libc: [2.33 Regression] pselect is broken on x32
|
||
[26615] libc: powerpc: libc segfaults when LD_PRELOADed with libgcc
|
||
[26620] glob: fnmatch with collating symbols results in segmentation
|
||
fault
|
||
[26625] libc: [2.33 Regression] CET is disabled
|
||
[26636] libc: 32-bit shmctl(IPC_INFO) crashes when shminfo struct is
|
||
at the end of a memory mapping
|
||
[26637] libc: semctl SEM_STAT_ANY fails to pass the buffer specified
|
||
by the caller to the kernel
|
||
[26639] libc: msgctl IPC_INFO and MSG_INFO return garbage
|
||
[26647] build: [-Werror=array-parameter=] due to different
|
||
declarations for __sigsetjmp
|
||
[26648] libc: mkstemp is likely to fail on systems with non-stricly-
|
||
monotonic clocks
|
||
[26649] stdio: printf should handle non-normal x86 long double numbers
|
||
gracefully (CVE-2020-29573)
|
||
[26686] build: -Warray-parameter instances building with GCC 11
|
||
[26687] build: -Warray-bounds instances building with GCC 11
|
||
[26690] stdio: Aliasing violation in __vfscanf_internal
|
||
[26691] nptl: Use a minimum guard size of 64 KiB on aarch64
|
||
[26726] build: GCC warning calling new_composite_name with an array of
|
||
one element
|
||
[26736] libc: FAIL: misc/tst-sysvshm-linux
|
||
[26737] libc: Random FAIL: rt/tst-shm
|
||
[26791] libc: Missing O_CLOEXEC in sysconf.c
|
||
[26798] dynamic-link: aarch64: variant PCS symbols may be incorrectly
|
||
lazy bound
|
||
[26801] nptl: pthread_mutex_clocklock with CLOCK_MONOTONIC can fail on
|
||
PI mutexes
|
||
[26818] string: aarch64: string tests may run ifunc variants that are
|
||
not safe
|
||
[26821] libc: Memory leak test failures on Fedora 33
|
||
[26824] libc: FAIL: elf/tst-cpu-features-supports with recent trunk:
|
||
FSGSBASE/LM/RDRAND check failure
|
||
[26833] time: adjtime() with delta == NULL segfaults on armv7 32bit
|
||
platform
|
||
[26853] libc: aarch64: Missing unwind information in statically linked
|
||
startup code
|
||
[26923] locale: Assertion failure in iconv when converting invalid
|
||
UCS4 (CVE-2020-29562)
|
||
[26926] dynamic-link: aarch64: library dependencies are not bti
|
||
protected
|
||
[26932] libc: sh: Multiple floating point functions defined as stubs
|
||
only since 2.31
|
||
[26964] nptl: pthread_mutex_timedlock returning EAGAIN after futex is
|
||
locked
|
||
[26988] dynamic-link: aarch64: BTI mprotect address is not page
|
||
aligned
|
||
[27002] build: libc_freeres_fn build failure with GCC 11
|
||
[27004] dynamic-link: ld.so is miscompiled by GCC 11
|
||
[27008] dynamic-link: ld.so.cache should have endianness markup
|
||
[27042] libc: [alpha] anonymous union in struct stat confuses
|
||
detection logic
|
||
[27053] libc: Conformance regression in system(3) (and probably also
|
||
pclose(3))
|
||
[27072] dynamic-link: static pie ifunc resolvers run before hwcap is
|
||
setup
|
||
[27077] network: Do not reload /etc/nsswitch.conf from chroot
|
||
[27083] libc: Unsafe unbounded alloca in addmntent
|
||
[27104] dynamic-link: The COMMON_CPUID_INDEX_MAX handshake does not
|
||
work
|
||
[27130] string: "rep movsb" performance issue
|
||
[27150] libc: alpha: wait4() is unavailable in static linking
|
||
[27177] dynamic-link:
|
||
GLIBC_TUNABLES=glibc.cpu.x86_ibt=on:glibc.cpu.x86_shstk=on doesn't
|
||
work
|
||
[27222] dynamic-link: Incorrect sysdeps/x86/tst-cpu-features-cpuinfo.c
|
||
[27237] malloc: deadlock in malloc/tst-malloc-stats-cancellation
|
||
[27256] locale: Assertion failure in ISO-2022-JP-3 gconv module
|
||
related to combining characters (CVE-2021-3326)
|
||
|
||
|
||
Version 2.32
|
||
|
||
Major new features:
|
||
|
||
* Unicode 13.0.0 Support: Character encoding, character type info, and
|
||
transliteration tables are all updated to Unicode 13.0.0, using
|
||
generator scripts contributed by Mike FABIAN (Red Hat).
|
||
|
||
* New locale added: ckb_IQ (Kurdish/Sorani spoken in Iraq)
|
||
|
||
* Support for Synopsys ARC HS cores (ARCv2 ISA) running Linux has been
|
||
added. This port requires at least binutils-2.32, gcc-8.3 and Linux-5.1.
|
||
Three ABIs are supported:
|
||
|
||
- arc-linux-gnu
|
||
- arc-linux-gnuhf
|
||
- arceb-linux-gnu
|
||
|
||
The arc* ABIs are little-endian while arceb is big-endian. All ABIs use
|
||
64-bit time (y2038 safe) and 64-bit file offsets (LFS default).
|
||
|
||
* The GNU C Library now loads audit modules listed in the DT_AUDIT and
|
||
DT_DEPAUDIT dynamic section entries of the main executable.
|
||
|
||
* powerpc64le supports IEEE128 long double libm/libc redirects when
|
||
using -mabi=ieeelongdouble to compile C code on supported GCC
|
||
toolchains. It is recommended to use GCC 8 or newer when testing
|
||
this option.
|
||
|
||
* To help detect buffer overflows and other out-of-bounds accesses
|
||
several APIs have been annotated with GCC 'access' attribute. This
|
||
should help GCC 10 issue better warnings.
|
||
|
||
* On Linux, functions pthread_attr_setsigmask_np and
|
||
pthread_attr_getsigmask_np have been added. They allow applications
|
||
to specify the signal mask of a thread created with pthread_create.
|
||
|
||
* The GNU C Library now provides the header file <sys/single_threaded.h>
|
||
which declares the variable __libc_single_threaded. Applications are
|
||
encouraged to use this variable for single-thread optimizations,
|
||
instead of weak references to symbols historically defined in
|
||
libpthread.
|
||
|
||
* The functions sigabbrev_np and sigdescr_np have been added. The
|
||
sigabbrev_np function returns the abbreviated signal name (e.g. "HUP" for
|
||
SIGHUP) while sigdescr_np returns a string describing the signal number
|
||
(e.g "Hangup" for SIGHUP). Different than strsignal, sigdescr_np does not
|
||
attempt to translate the return description, both functions return
|
||
NULL for an invalid signal number.
|
||
|
||
They should be used instead of sys_siglist or sys_sigabbrev and they
|
||
are both thread and async-signal safe. These functions are GNU extensions.
|
||
|
||
* The functions strerrorname_np and strerrordesc_np have been added. The
|
||
strerroname_np function returns error number name (e.g. "EINVAL" for EINVAL)
|
||
while strerrordesc_np returns a string describing the error number
|
||
(e.g "Invalid argument" for EINVAL). Different than strerror,
|
||
strerrordesc_np does not attempt to translate the return description, both
|
||
functions return NULL for an invalid error number.
|
||
|
||
They should be used instead of sys_errlist and sys_nerr, both are
|
||
thread and async-signal safe. These functions are GNU extensions.
|
||
|
||
* AArch64 now supports standard branch protection security hardening
|
||
in glibc when it is built with a GCC that is configured with
|
||
--enable-standard-branch-protection (or if -mbranch-protection=standard
|
||
flag is passed when building both GCC target libraries and glibc,
|
||
in either case a custom GCC is needed). This includes branch target
|
||
identification (BTI) and pointer authentication for return addresses
|
||
(PAC-RET). They require armv8.5-a and armv8.3-a architecture
|
||
extensions respectively for the protection to be effective,
|
||
otherwise the used instructions are nops. User code can use PAC-RET
|
||
without libc support, but BTI requires a libc that is built with BTI
|
||
support, otherwise runtime objects linked into user code will not be
|
||
BTI compatible.
|
||
|
||
Deprecated and removed features, and other changes affecting compatibility:
|
||
|
||
* Remove configure option --enable-obsolete-rpc. Sun RPC is removed
|
||
from glibc. This includes the rpcgen program, librpcsvc, and the Sun
|
||
RPC header files. Backward compatibility for old programs is kept
|
||
only for architectures and ABIs that have been added in or before
|
||
glibc 2.31. New programs need to use TI-RPC
|
||
<http://git.linux-nfs.org/?p=steved/libtirpc.git;a=summary> and
|
||
rpcsvc-proto <https://github.com/thkukuk/rpcsvc-proto>.
|
||
|
||
* Remove configure option --enable-obsolete-nsl. libnsl is only built
|
||
as shared library for backward compatibility and the NSS modules "nis"
|
||
and "nisplus" are not built at all and libnsl's headers aren't
|
||
installed. This compatibility is kept only for architectures and ABIs
|
||
that have been added in or before version 2.28. Replacement
|
||
implementations based on TI-RPC, which additionally support IPv6, are
|
||
available from <https://github.com/thkukuk/>. This change does not
|
||
affect the "compat" NSS module, which does not depend on libnsl
|
||
since 2.27 and thus can be used without NIS.
|
||
|
||
* The deprecated <sys/sysctl.h> header and the sysctl function have been
|
||
removed. To support old binaries, the sysctl function continues to
|
||
exist as a compatibility symbol (on those architectures which had it),
|
||
but always fails with ENOSYS. This reflects the removal of the system
|
||
call from all architectures, starting with Linux 5.5.
|
||
|
||
* The sstk function is no longer available to newly linked binaries.
|
||
Its implementation always returned with a failure, and the function
|
||
was not declared in any header file.
|
||
|
||
* The legacy signal handling functions siginterrupt, sigpause, sighold,
|
||
sigrelse, sigignore and sigset, and the sigmask macro have been
|
||
deprecated. Applications should use the sigsuspend, sigprocmask and
|
||
sigaction functions instead.
|
||
|
||
* ldconfig now defaults to the new format for ld.so.cache. glibc has
|
||
already supported this format for almost 20 years.
|
||
|
||
* The deprecated arrays sys_siglist, _sys_siglist, and sys_sigabbrev
|
||
are no longer available to newly linked binaries, and their declarations
|
||
have been removed from <string.h>. They are exported solely as
|
||
compatibility symbols to support old binaries. All programs should use
|
||
strsignal instead.
|
||
|
||
* The deprecated symbols sys_errlist, _sys_errlist, sys_nerr, and _sys_nerr
|
||
are no longer available to newly linked binaries, and their declarations
|
||
have been removed from <stdio.h>. They are exported solely as
|
||
compatibility symbols to support old binaries. All programs should use
|
||
strerror or strerror_r instead.
|
||
|
||
* Both strerror and strerror_l now share the same internal buffer in the
|
||
calling thread, meaning that the returned string pointer may be invalided
|
||
or contents might be overwritten on subsequent calls in the same thread or
|
||
if the thread is terminated. It makes strerror MT-safe.
|
||
|
||
* Using weak references to libpthread functions such as pthread_create
|
||
or pthread_key_create to detect the singled-threaded nature of a
|
||
program is an obsolescent feature. Future versions of glibc will
|
||
define pthread_create within libc.so.6 itself, so such checks will
|
||
always flag the program as multi-threaded. Applications should check
|
||
the __libc_single_threaded variable declared in
|
||
<sys/single_threaded.h> instead.
|
||
|
||
* The "files" NSS module no longer supports the "key" database (used for
|
||
secure RPC). The contents of the /etc/publickey file will be ignored,
|
||
regardless of the settings in /etc/nsswitch.conf. (This method of
|
||
storing RPC keys only supported the obsolete and insecure AUTH_DES
|
||
flavor of secure RPC.)
|
||
|
||
* The __morecore and __after_morecore_hook malloc hooks and the default
|
||
implementation __default_morecore have been deprecated. Applications
|
||
should use malloc interposition to change malloc behavior, and mmap to
|
||
allocate anonymous memory. A future version of glibc may require that
|
||
applications which use the malloc hooks must preload a special shared
|
||
object, to enable the hooks.
|
||
|
||
* The hesiod NSS module has been deprecated and will be removed in a
|
||
future version of glibc. System administrators are encouraged to
|
||
switch to other approaches for networked account databases, such as
|
||
LDAP.
|
||
|
||
Changes to build and runtime requirements:
|
||
|
||
* powerpc64le requires GCC 7.4 or newer. This is required for supporting
|
||
long double redirects.
|
||
|
||
Security related changes:
|
||
|
||
CVE-2016-10228: An infinite loop has been fixed in the iconv program when
|
||
invoked with the -c option and when processing invalid multi-byte input
|
||
sequences. Reported by Jan Engelhardt.
|
||
|
||
CVE-2020-10029: Trigonometric functions on x86 targets suffered from stack
|
||
corruption when they were passed a pseudo-zero argument. Reported by Guido
|
||
Vranken / ForAllSecure Mayhem.
|
||
|
||
CVE-2020-1752: A use-after-free vulnerability in the glob function when
|
||
expanding ~user has been fixed.
|
||
|
||
CVE-2020-6096: A signed comparison vulnerability in the ARMv7 memcpy and
|
||
memmove functions has been fixed. Discovered by Jason Royes and Samual
|
||
Dytrych of the Cisco Security Assessment and Penetration Team (See
|
||
TALOS-2020-1019).
|
||
|
||
The following bugs are resolved with this release:
|
||
|
||
[9809] localedata: ckb_IQ: new Kurdish Sorani locale
|
||
[10441] manual: Backtraces code example lacks error checking
|
||
[10815] librt: [timer_create / SIGEV_THREAD] signalmask of
|
||
timer_sigev_thread dangerous
|
||
[14231] stdio: stdio-common tests memory requirements
|
||
[14578] libc: /proc-based emulation for lchmod, fchmodat
|
||
[16272] dynamic-link: dlopen()ing a DT_FILTER library crashes if
|
||
filtee has constructor
|
||
[19519] locale: iconv(1) with -c option hangs on illegal multi-byte
|
||
sequences (CVE-2016-10228)
|
||
[19737] admin: Doc page “20.5.2 Infinity and NaN” has incorrect HTML
|
||
character entities for infinity & pi
|
||
[20338] libc: Parsing of /etc/gshadow can return bad pointers causing
|
||
segfaults in applications
|
||
[20543] libc: Please move from .gnu.linkonce to comdat
|
||
[22489] network: gcc warns about implicit conversion in
|
||
ICMP6_FILTER_SETPASS with -Wsign-conversion
|
||
[22525] localedata: or_IN LC_COLLATE does not use copy "iso14651_t1"
|
||
[23294] math: Complex _FloatN functions are redirected to the wrong
|
||
function with -mlong-double-64
|
||
[23296] libc: Data race in setting function descriptor during lazy
|
||
binding
|
||
[23668] dynamic-link: ldconfig: Default to the new format for
|
||
ld.so.cache
|
||
[23819] hurd: hurd: Add C11 thread support
|
||
[23990] build: test-container error out on failure to exec child.
|
||
[23991] build: shell-container typo in run_command_array
|
||
[24638] manual: Error in example of parsing a template string
|
||
[24654] manual: Wrong declaration of wcschr in libc manual
|
||
[24943] dynamic-link: Support DT_AUDIT, DT_DEPAUDIT in the dynamic
|
||
linker
|
||
[25051] dynamic-link: aarch64, powerpc64 uses surplus static tls for
|
||
dynamically loaded dsos
|
||
[25098] nptl: nptl: ctype classification functions are not AS-Safe
|
||
[25219] libc: improve out-of-bounds checking with GCC 10 attribute
|
||
access
|
||
[25262] libc: getcontext/setcontext/swapcontext unnecessarily save and
|
||
restore EAX, ECX and EDX
|
||
[25397] dynamic-link: Legacy bitmap doesn't cover jitted code
|
||
[25414] glob: 'glob' use-after-free bug (CVE-2020-1752)
|
||
[25420] network: Race condition in resolv_conf.c can result in caching
|
||
stale configuration forever
|
||
[25487] math: sinl() stack corruption from crafted input
|
||
(CVE-2020-10029)
|
||
[25506] build: configure: broken detection of STT_GNU_IFUNC when GCC
|
||
defaults to PIE
|
||
[25523] libc: MIPS/Linux inline syscall template is miscompiled
|
||
[25620] libc: Signed comparison vulnerability in the ARMv7 memcpy()
|
||
(CVE-2020-6096)
|
||
[25623] libc: test-sysvmsg, test-sysvsem, test-sysvshm fail with 2.31
|
||
on 32 bit and old kernel
|
||
[25635] libc: arm: Wrong sysdep order selection for soft-fp
|
||
[25639] localedata: Some names of days and months wrongly spelt in
|
||
Occitan
|
||
[25657] libc: sigprocmask() and sigisemptyset() manipulate different
|
||
amount of sigset_t bytes
|
||
[25691] stdio: printf: memory leak when printing long multibyte
|
||
strings
|
||
[25715] libc: system() returns wrong errors when posix_spawn fails
|
||
[25733] malloc: mallopt(M_MXFAST) can set global_max_fast to 0
|
||
[25734] locale: mbrtowc with Big5-HKSCS fails to reset conversion
|
||
state for conversions that produce two Unicode code points
|
||
[25765] nptl: Incorrect futex syscall in __pthread_disable_asynccancel
|
||
for linux x86_64 leads to livelock
|
||
[25788] dynamic-link: [i386] -fno-omit-frame-pointer in CFLAGS causes
|
||
test failures, invalid instruction in ld.so
|
||
[25790] glob: Typo in tst-fnmatch.input
|
||
[25810] libc: x32: Incorrect syscall entries with pointer, off_t and
|
||
size_t
|
||
[25819] localedata: Update locale data to Unicode 13.0.0
|
||
[25824] libc: Abnormal function of strnlen in aarch64
|
||
[25887] dynamic-link: Wasted space in _dl_x86_feature_1[1]
|
||
[25896] libc: Incorrect prctl
|
||
[25902] libc: Bad LOADARGS_N
|
||
[25905] dynamic-link: VSX registers are corrupted during PLT
|
||
resolution when glibc is built with --disable-multi-arch and --with-
|
||
cpu=power9
|
||
[25933] string: Off by one error in __strncmp_avx2 when
|
||
length=VEC_SIZE*4 and strings are at page boundaries can cause a
|
||
segfault
|
||
[25942] nptl: Deadlock on stack_cache_lock between __nptl_setxid and
|
||
exiting detached thread
|
||
[25966] libc: Incorrect access of __x86_shared_non_temporal_threshold
|
||
for x32
|
||
[25976] nss: internal_end*ent in nss_compat may clobber errno, hiding
|
||
ERANGE
|
||
[25999] nptl: Use-after-free issue in pthread_getaddr_default_np
|
||
[26073] math: getpayload() has wrong return value
|
||
[26076] dynamic-link: dlmopen crashes after failing to load
|
||
dependencies in audit mode
|
||
[26120] localedata: column width of of some Korean
|
||
JUNGSEONG/JONGSEONG characters wrong (should be 0)
|
||
[26128] libc: Incorrect bit_cpu_CLFLUSHOPT
|
||
[26133] libc: Incorrect need_arch_feature_F16C
|
||
[26137] libc: strtod() triggers exception FE_INEXACT on reasonable
|
||
input
|
||
[26149] libc: PKU is usable only if OSPKE is set
|
||
[26173] libc: powerpc64*: Add @notoc to calls to functions that do not
|
||
preserve r2
|
||
[26208] libc: Incorrect bit_cpu_CLFSH
|
||
[26210] network: Incorrect use of hidden symbols for global sunrpc
|
||
variables
|
||
[26211] stdio: printf integer overflow calculating allocation size
|
||
[26214] stdio: printf_fp double free
|
||
[26215] stdio: printf_fp memory leak
|
||
[26232] time: FAIL: support/tst-timespec for 32-bit targets
|
||
[26258] nss: nss_compat should not read input files with mmap
|
||
[26332] string: Incorrect cache line size load causes memory
|
||
corruption in memset
|
||
|
||
|
||
Version 2.31
|
||
|
||
Major new features:
|
||
|
||
* The GNU C Library now supports a feature test macro _ISOC2X_SOURCE to
|
||
enable features from the draft ISO C2X standard. Only some features from
|
||
this draft standard are supported by the GNU C Library, and as the draft
|
||
is under active development, the set of features enabled by this macro is
|
||
liable to change. Features from C2X are also enabled by _GNU_SOURCE, or
|
||
by compiling with "gcc -std=gnu2x".
|
||
|
||
* The <math.h> functions that round their results to a narrower type now
|
||
have corresponding type-generic macros in <tgmath.h>, as defined in TS
|
||
18661-1:2014 and TS 18661-3:2015 as amended by the resolution of
|
||
Clarification Request 13 to TS 18661-3.
|
||
|
||
* The function pthread_clockjoin_np has been added, enabling join with a
|
||
terminated thread with a specific clock. It allows waiting against
|
||
CLOCK_MONOTONIC and CLOCK_REALTIME. This function is a GNU extension.
|
||
|
||
* New locale added: mnw_MM (Mon language spoken in Myanmar).
|
||
|
||
* The DNS stub resolver will optionally send the AD (authenticated data) bit
|
||
in queries if the trust-ad option is set via the options directive in
|
||
/etc/resolv.conf (or if RES_TRUSTAD is set in _res.options). In this
|
||
mode, the AD bit, as provided by the name server, is available to
|
||
applications which call res_search and related functions. In the default
|
||
mode, the AD bit is not set in queries, and it is automatically cleared in
|
||
responses, indicating a lack of DNSSEC validation. (Therefore, the name
|
||
servers and the network path to them are treated as untrusted.)
|
||
|
||
Deprecated and removed features, and other changes affecting compatibility:
|
||
|
||
* The totalorder and totalordermag functions, and the corresponding
|
||
functions for other floating-point types, now take pointer arguments to
|
||
avoid signaling NaNs possibly being converted to quiet NaNs in argument
|
||
passing. This is in accordance with the resolution of Clarification
|
||
Request 25 to TS 18661-1, as applied for C2X. Existing binaries that pass
|
||
floating-point arguments directly will continue to work.
|
||
|
||
* The obsolete function stime is no longer available to newly linked
|
||
binaries, and its declaration has been removed from <time.h>.
|
||
Programs that set the system time should use clock_settime instead.
|
||
|
||
* We plan to remove the obsolete function ftime, and the header <sys/timeb.h>,
|
||
in a future version of glibc. In this release, the header still exists
|
||
but calling ftime will cause a compiler warning. All programs should use
|
||
gettimeofday or clock_gettime instead.
|
||
|
||
* The gettimeofday function no longer reports information about a
|
||
system-wide time zone. This 4.2-BSD-era feature has been deprecated for
|
||
many years, as it cannot handle the full complexity of the world's
|
||
timezones, but hitherto we have supported it on a best-effort basis.
|
||
Changes required to support 64-bit time_t on 32-bit architectures have
|
||
made this no longer practical.
|
||
|
||
As of this release, callers of gettimeofday with a non-null 'tzp' argument
|
||
should expect to receive a 'struct timezone' whose tz_minuteswest and
|
||
tz_dsttime fields are zero. (For efficiency reasons, this does not always
|
||
happen on a few Linux-based ports. This will be corrected in a future
|
||
release.)
|
||
|
||
All callers should supply a null pointer for the 'tzp' argument to
|
||
gettimeofday. For accurate information about the time zone associated
|
||
with the current time, use the localtime function.
|
||
|
||
gettimeofday itself is obsolescent according to POSIX. We have no plans
|
||
to remove access to this function, but portable programs should consider
|
||
using clock_gettime instead.
|
||
|
||
* The settimeofday function can still be used to set a system-wide time
|
||
zone when the operating system supports it. This is because the Linux
|
||
kernel reused the API, on some architectures, to describe a system-wide
|
||
time-zone-like offset between the software clock maintained by the kernel,
|
||
and the "RTC" clock that keeps time when the system is shut down.
|
||
|
||
However, to reduce the odds of this offset being set by accident,
|
||
settimeofday can no longer be used to set the time and the offset
|
||
simultaneously. If both of its two arguments are non-null, the call
|
||
will fail (setting errno to EINVAL).
|
||
|
||
Callers attempting to set this offset should also be prepared for the call
|
||
to fail and set errno to ENOSYS; this already happens on the Hurd and on
|
||
some Linux architectures. The Linux kernel maintainers are discussing a
|
||
more principled replacement for the reused API. After a replacement
|
||
becomes available, we will change settimeofday to fail with ENOSYS on all
|
||
platforms when its 'tzp' argument is not a null pointer.
|
||
|
||
settimeofday itself is obsolescent according to POSIX. Programs that set
|
||
the system time should use clock_settime and/or the adjtime family of
|
||
functions instead. We may cease to make settimeofday available to newly
|
||
linked binaries after there is a replacement for Linux's time-zone-like
|
||
offset API.
|
||
|
||
* SPARC ISA v7 is no longer supported. v8 is still supported, but only if
|
||
the optional CAS instruction is implemented (for instance, LEON processors
|
||
are still supported, but SuperSPARC processors are not).
|
||
|
||
As the oldest 64-bit SPARC ISA is v9, this only affects 32-bit
|
||
configurations.
|
||
|
||
* If a lazy binding failure happens during dlopen, during the execution of
|
||
an ELF constructor, the process is now terminated. Previously, the
|
||
dynamic loader would return NULL from dlopen, with the lazy binding error
|
||
captured in a dlerror message. In general, this is unsafe because
|
||
resetting the stack in an arbitrary function call is not possible.
|
||
|
||
* For MIPS hard-float ABIs, the GNU C Library will be configured to need an
|
||
executable stack unless explicitly configured at build time to require
|
||
minimum kernel version 4.8 or newer. This is because executing
|
||
floating-point branches on a non-executable stack on Linux kernels prior to
|
||
4.8 can lead to application crashes for some MIPS configurations. While
|
||
currently PT_GNU_STACK is not widely used on MIPS, future releases of GCC are
|
||
expected to enable non-executable stack by default with PT_GNU_STACK by
|
||
default and is thus likely to trigger a crash on older kernels.
|
||
|
||
The GNU C Library can be built with --enable-kernel=4.8.0 in order to keep a
|
||
non-executable stack while dropping support for older kernels.
|
||
|
||
* System call wrappers for time system calls now use the new time64 system
|
||
calls when available. On 32-bit targets, these wrappers attempt to call
|
||
the new system calls first and fall back to the older 32-bit time system
|
||
calls if they are not present. This may cause issues in environments
|
||
that cannot handle unsupported system calls gracefully by returning
|
||
-ENOSYS. Seccomp sandboxes are affected by this issue.
|
||
|
||
Changes to build and runtime requirements:
|
||
|
||
* It is no longer necessary to have recent Linux kernel headers to build
|
||
working (non-stub) system call wrappers on all architectures except 64-bit
|
||
RISC-V. 64-bit RISC-V requires a minimum kernel headers version of 5.0.
|
||
|
||
* The ChangeLog file is no longer present in the toplevel directory of the
|
||
source tree. ChangeLog files are located in the ChangeLog.old directory as
|
||
ChangeLog.N where the highest N has the latest entries.
|
||
|
||
Security related changes:
|
||
|
||
CVE-2020-1751: A defect in the PowerPC backtrace function could cause an
|
||
out-of-bounds write when executed in a signal frame context.
|
||
|
||
CVE-2019-19126: ld.so failed to ignore the LD_PREFER_MAP_32BIT_EXEC
|
||
environment variable during program execution after a security
|
||
transition, allowing local attackers to restrict the possible mapping
|
||
addresses for loaded libraries and thus bypass ASLR for a setuid
|
||
program. Reported by Marcin Kościelnicki.
|
||
|
||
The following bugs are resolved with this release:
|
||
|
||
[12031] localedata: iconv -t ascii//translit with Greek characters
|
||
[15813] libc: Multiple issues in __gen_tempname
|
||
[17726] libc: [arm, sparc] profil_counter should be compat symbol
|
||
[18231] libc: ipc_perm struct's mode member has wrong type in sys/ipc.h
|
||
[19767] libc: vdso is not used with static linking
|
||
[19903] hurd: Shared mappings not being inherited by children processes
|
||
[20358] network: RES_USE_DNSSEC sets DO; should also have a way to set AD
|
||
[20839] dynamic-link: Incomplete rollback of dynamic linker state on
|
||
linking failure
|
||
[23132] localedata: Missing transliterations in Miscellaneous Mathematical
|
||
Symbols-A/B Unicode blocks
|
||
[23518] libc: Eliminate __libc_utmp_jump_table
|
||
[24026] malloc: malloc_info() returns wrong numbers
|
||
[24054] localedata: Many locales are missing date_fmt
|
||
[24214] dynamic-link: user defined ifunc resolvers may run in ldd mode
|
||
[24304] dynamic-link: Lazy binding failure during ELF
|
||
constructors/destructors is not fatal
|
||
[24376] libc: RISC-V symbol size confusion with _start
|
||
[24682] localedata: zh_CN first weekday should be Monday per GB/T
|
||
7408-2005
|
||
[24824] libc: test-in-container does not install charmap files compatible
|
||
with localedef
|
||
[24844] regex: regex bad pointer / leakage if malloc fails
|
||
[24867] malloc: Unintended malloc_info formatting changes
|
||
[24879] libc: login: utmp alarm timer can arrive after lock acquisition
|
||
[24880] libc: login: utmp implementation uses struct flock with fcntl64
|
||
[24882] libc: login: pututline uses potentially outdated cache
|
||
[24899] libc: Missing nonstring attributes in <utmp.h>, <utmpx.h>
|
||
[24902] libc: login: Repeating pututxline on EINTR/EAGAIN causes stale
|
||
utmp entries
|
||
[24916] dynamic-link: [MIPS] Highest EI_ABIVERSION value not raised to
|
||
ABSOLUTE ABI
|
||
[24930] dynamic-link: dlopen of PIE executable can result in
|
||
_dl_allocate_tls_init assertion failure
|
||
[24950] localedata: Top-of-tree glibc does not build with top-of-tree GCC
|
||
(stringop-overflow error)
|
||
[24959] time: librt IFUNC resolvers for clock_gettime and clock_*
|
||
functions other can lead to crashes
|
||
[24967] libc: jemalloc static linking causes runtime failure
|
||
[24986] libc: alpha: new getegid, geteuid and getppid syscalls used
|
||
unconditionally
|
||
[25035] libc: sbrk() failure handled poorly in tunables_strdup
|
||
[25087] dynamic-link: ldconfig mishandles unusual .dynstr placement
|
||
[25097] libc: new -Warray-bounds with GCC 10
|
||
[25112] dynamic-link: dlopen must not make new objects accessible when it
|
||
still can fail with an error
|
||
[25139] localedata: Please add the new mnw_MM locale
|
||
[25149] regex: Array bounds violation in proceed_next_node
|
||
[25157] dynamic-link: Audit cookie for the dynamic loader is not
|
||
initialized correctly
|
||
[25189] libc: glibc's __glibc_has_include causes issues with clang
|
||
-frewrite-includes
|
||
[25194] malloc: malloc.c: do_set_mxfast incorrectly casts the mallopt
|
||
value to an unsigned
|
||
[25204] dynamic-link: LD_PREFER_MAP_32BIT_EXEC not ignored in setuid
|
||
binaries (CVE-2019-19126)
|
||
[25225] libc: ld.so fails to link on x86 if GCC defaults to -fcf-
|
||
protection
|
||
[25226] string: strstr: Invalid result if needle crosses page on s390-z15
|
||
ifunc variant.
|
||
[25232] string: <string.h> does not enable const correctness for strchr et
|
||
al. for Clang++
|
||
[25233] localedata: Consider "." as the thousands separator for sl_SI
|
||
(Slovenian)
|
||
[25241] nptl: __SIZEOF_PTHREAD_MUTEX_T defined twice for x86
|
||
[25251] build: Failure to run tests when CFLAGS contains -DNDEBUG.
|
||
[25271] libc: undeclared identifier PTHREAD_MUTEX_DEFAULT when compiling
|
||
with -std=c11
|
||
[25323] localedata: km_KH: d_t_fmt contains "m" instead of "%M"
|
||
[25324] localedata: lv_LV: d_t_fmt contains suspicious words in the time
|
||
part
|
||
[25396] dynamic-link: Failing dlopen can leave behind dangling GL
|
||
(dl_initfirst) link map pointer
|
||
[25401] malloc: pvalloc must not have __attribute_alloc_size__
|
||
[25423] libc: Array overflow in backtrace on powerpc
|
||
[25425] network: Missing call to __resolv_context_put in
|
||
getaddrinfo.c:gethosts
|
||
|
||
|
||
Version 2.30
|
||
|
||
Major new features:
|
||
|
||
* Unicode 12.1.0 Support: Character encoding, character type info, and
|
||
transliteration tables are all updated to Unicode 12.1.0, using
|
||
generator scripts contributed by Mike FABIAN (Red Hat).
|
||
|
||
* The dynamic linker accepts the --preload argument to preload shared
|
||
objects, in addition to the LD_PRELOAD environment variable.
|
||
|
||
* The twalk_r function has been added. It is similar to the existing
|
||
twalk function, but it passes an additional caller-supplied argument
|
||
to the callback function.
|
||
|
||
* On Linux, the getdents64, gettid, and tgkill functions have been added.
|
||
|
||
* Minguo (Republic of China) calendar support has been added as an
|
||
alternative calendar for the following locales: zh_TW, cmn_TW, hak_TW,
|
||
nan_TW, lzh_TW.
|
||
|
||
* The entry for the new Japanese era has been added for ja_JP locale.
|
||
|
||
* Memory allocation functions malloc, calloc, realloc, reallocarray, valloc,
|
||
pvalloc, memalign, and posix_memalign fail now with total object size
|
||
larger than PTRDIFF_MAX. This is to avoid potential undefined behavior with
|
||
pointer subtraction within the allocated object, where results might
|
||
overflow the ptrdiff_t type.
|
||
|
||
* The dynamic linker no longer refuses to load objects which reference
|
||
versioned symbols whose implementation has moved to a different soname
|
||
since the object has been linked. The old error message, symbol
|
||
FUNCTION-NAME, version SYMBOL-VERSION not defined in file DSO-NAME with
|
||
link time reference, is gone.
|
||
|
||
* Add new POSIX-proposed pthread_cond_clockwait, pthread_mutex_clocklock,
|
||
pthread_rwlock_clockrdlock, pthread_rwlock_clockwrlock and sem_clockwait
|
||
functions. These behave similarly to their "timed" equivalents, but also
|
||
accept a clockid_t parameter to determine which clock their timeout should
|
||
be measured against. All functions allow waiting against CLOCK_MONOTONIC
|
||
and CLOCK_REALTIME. The decision of which clock to be used is made at the
|
||
time of the wait (unlike with pthread_condattr_setclock, which requires
|
||
the clock choice at initialization time).
|
||
|
||
* On AArch64 the GNU IFUNC resolver call ABI changed: old resolvers still
|
||
work, new resolvers can use a second argument which can be extended in
|
||
the future, currently it contains the AT_HWCAP2 value.
|
||
|
||
Deprecated and removed features, and other changes affecting compatibility:
|
||
|
||
* The copy_file_range function fails with ENOSYS if the kernel does not
|
||
support the system call of the same name. Previously, user space
|
||
emulation was performed, but its behavior did not match the kernel
|
||
behavior, which was deemed too confusing. Applications which use the
|
||
copy_file_range function can no longer rely on glibc to provide a fallback
|
||
on kernels that do not support the copy_file_range system call, and if
|
||
this function returns ENOSYS, they will need to use their own fallback.
|
||
Support for copy_file_range for most architectures was added in version
|
||
4.5 of the mainline Linux kernel.
|
||
|
||
* The functions clock_gettime, clock_getres, clock_settime,
|
||
clock_getcpuclockid, clock_nanosleep were removed from the librt library
|
||
for new applications (on architectures which had them). Instead, the
|
||
definitions in libc will be used automatically, which have been available
|
||
since glibc 2.17.
|
||
|
||
* The obsolete and never-implemented XSI STREAMS header files <stropts.h>
|
||
and <sys/stropts.h> have been removed.
|
||
|
||
* Support for the "inet6" option in /etc/resolv.conf and the RES_USE_INET6
|
||
resolver flag (deprecated in glibc 2.25) have been removed.
|
||
|
||
* The obsolete RES_INSECURE1 and RES_INSECURE2 option flags for the DNS stub
|
||
resolver have been removed from <resolv.h>.
|
||
|
||
* With --enable-bind-now, installed programs are now linked with the
|
||
BIND_NOW flag.
|
||
|
||
* Support for the PowerPC SPE ISA extension (powerpc-*-*gnuspe*
|
||
configurations) has been removed, following the deprecation of this
|
||
subarchitecture in version 8 of GCC, and its removal in version 9.
|
||
|
||
* On 32-bit Arm, support for the port-based I/O emulation and the <sys/io.h>
|
||
header have been removed.
|
||
|
||
* The Linux-specific <sys/sysctl.h> header and the sysctl function have been
|
||
deprecated and will be removed from a future version of glibc.
|
||
Application should directly access /proc instead. For obtaining random
|
||
bits, the getentropy function can be used.
|
||
|
||
Changes to build and runtime requirements:
|
||
|
||
* GCC 6.2 or later is required to build the GNU C Library.
|
||
|
||
Older GCC versions and non-GNU compilers are still supported when
|
||
compiling programs that use the GNU C Library.
|
||
|
||
Security related changes:
|
||
|
||
CVE-2019-7309: x86-64 memcmp used signed Jcc instructions to check
|
||
size. For x86-64, memcmp on an object size larger than SSIZE_MAX
|
||
has undefined behavior. On x32, the size_t argument may be passed
|
||
in the lower 32 bits of the 64-bit RDX register with non-zero upper
|
||
32 bits. When it happened with the sign bit of RDX register set,
|
||
memcmp gave the wrong result since it treated the size argument as
|
||
zero. Reported by H.J. Lu.
|
||
|
||
CVE-2019-9169: Attempted case-insensitive regular-expression match
|
||
via proceed_next_node in posix/regexec.c leads to heap-based buffer
|
||
over-read. Reported by Hongxu Chen.
|
||
|
||
The following bugs are resolved with this release:
|
||
|
||
[2872] locale: Transliteration Cyrillic -> ASCII fails
|
||
[6399] libc: gettid() should have a wrapper
|
||
[16573] malloc: mtrace hangs when MALLOC_TRACE is defined
|
||
[16976] glob: fnmatch unbounded stack VLA for collating symbols
|
||
[17396] localedata: globbing for locale by [[.collating-element.]]
|
||
[18035] dynamic-link: pldd does no longer work, enters infinite loop
|
||
[18465] malloc: memusagestat is built using system C library
|
||
[18830] locale: iconv -c -f ascii with >buffer size worth of input before
|
||
invalid input drops valid char
|
||
[20188] nptl: libpthread IFUNC resolver for vfork can lead to crash
|
||
[20568] locale: Segfault with wide characters and setlocale/fgetwc/UTF-8
|
||
[21897] localedata: Afar locales: Fix mon, abmon, and abday
|
||
[22964] localedata: The Japanese Era name will be changed on May 1, 2019
|
||
[23352] malloc: __malloc_check_init still defined in public header
|
||
malloc.h.
|
||
[23403] nptl: Wrong alignment of TLS variables
|
||
[23501] libc: nftw() doesn't return dangling symlink's inode
|
||
[23733] malloc: Check the count before calling tcache_get()
|
||
[23741] malloc: Missing __attribute_alloc_size__ in many allocation
|
||
functions
|
||
[23831] localedata: nl_NL missing LC_NUMERIC thousands_sep
|
||
[23844] nptl: pthread_rwlock_trywrlock results in hang
|
||
[23983] argparse: Missing compat versions of argp_failure and argp_error
|
||
for long double = double
|
||
[23984] libc: Missing compat versions of err.h and error.h functions for
|
||
long double = double
|
||
[23996] localedata: Dutch salutations
|
||
[24040] libc: riscv64: unterminated call chain in __thread_start
|
||
[24047] network: libresolv should use IP_RECVERR/IPV6_RECVERR to avoid
|
||
long timeouts
|
||
[24051] stdio: puts and putchar output to _IO_stdout instead of stdout
|
||
[24059] nss: nss_files: get_next_alias calls fgets_unlocked without
|
||
checking for NULL.
|
||
[24114] regex: regexec buffer read overrun in "grep -i
|
||
'\(\(\)*.\)*\(\)\(\)\1'"
|
||
[24122] libc: Segfaults if 0 returned from la_version
|
||
[24153] stdio: Some input functions do not react to stdin assignment
|
||
[24155] string: x32 memcmp can treat positive length as 0 (if sign bit in
|
||
RDX is set) (CVE-2019-7309)
|
||
[24161] nptl: __run_fork_handlers self-deadlocks in malloc/tst-mallocfork2
|
||
[24164] libc: Systemtap probes need to use "nr" constraint on 32-bit Arm,
|
||
not the default "nor"
|
||
[24166] dynamic-link: Dl_serinfo.dls_serpath[1] in dlfcn.h causes UBSAN
|
||
false positives, change to modern flexible array
|
||
[24180] nptl: pthread_mutex_trylock does not use the correct order of
|
||
instructions while maintaining the robust mutex list due to missing
|
||
compiler barriers.
|
||
[24194] librt: Non-compatibility symbols for clock_gettime etc. cause
|
||
unnecessary librt dependencies
|
||
[24200] localedata: Revert first_weekday removal in en_IE locale
|
||
[24211] nptl: Use-after-free in Systemtap probe in pthread_join
|
||
[24215] nptl: pthread_timedjoin_np should be a cancellation point
|
||
[24216] malloc: Check for large bin list corruption when inserting
|
||
unsorted chunk
|
||
[24228] stdio: old x86 applications that use legacy libio crash on exit
|
||
[24231] dynamic-link: [sparc64] R_SPARC_H34 implementation falls through
|
||
to R_SPARC_H44
|
||
[24293] localedata: Missing Minguo calendar support for TW locales
|
||
[24296] localedata: Orthographic mistakes in 'day' and 'abday' sections in
|
||
tt_RU (Tatar) locale
|
||
[24307] localedata: Update locale data to Unicode 12.0.0
|
||
[24323] dynamic-link: dlopen should not be able open PIE objects
|
||
[24335] build: "Obsolete types detected" with Linux 5.0 headers
|
||
[24369] localedata: Orthographic mistakes in 'mon' and 'abmon' sections in
|
||
tt_RU (Tatar) locale
|
||
[24370] localedata: Add lang_name for tt_RU locale
|
||
[24372] locale: Binary locale files are not architecture independent
|
||
[24394] time: strptime %Ey mis-parses final year of era
|
||
[24476] dynamic-link: __libc_freeres triggers bad free in libdl if dlerror
|
||
was not used
|
||
[24506] dynamic-link: FAIL: elf/tst-pldd with --enable-hardcoded-path-in-
|
||
tests
|
||
[24531] malloc: Malloc tunables give tcache assertion failures
|
||
[24532] libc: conform/arpa/inet.h failures due to linux kernel 64-bit
|
||
time_t changes
|
||
[24535] localedata: Update locale data to Unicode 12.1.0
|
||
[24537] build: nptl/tst-eintr1 test case can hit task limits on some
|
||
kernels and break testing
|
||
[24544] build: elf/tst-pldd doesn't work if you install with a --prefix
|
||
[24556] build: [GCC 9] error: ‘%s’ directive argument is null
|
||
[-Werror=format-overflow=]
|
||
[24570] libc: alpha: compat msgctl uses __IPC_64
|
||
[24584] locale: Data race in __wcsmbs_clone_conv
|
||
[24588] stdio: Remove codecvt vtables from libio
|
||
[24603] math: sysdeps/ieee754/dbl-64/branred.c is slow when compiled with
|
||
-O3 -march=skylake
|
||
[24614] localedata: nl_NL LC_MONETARY doesn't match CLDR 35
|
||
[24632] stdio: Old binaries which use freopen with default stdio handles
|
||
crash
|
||
[24640] libc: __ppc_get_timebase_freq() always return 0 when using static
|
||
linked glibc
|
||
[24652] localedata: szl_PL spelling correction
|
||
[24695] nss: nss_db: calling getpwent after endpwent crashes
|
||
[24696] nss: endgrent() clobbers errno=ERRNO for 'group: db files' entry
|
||
in /etc/nsswitch.conf
|
||
[24699] libc: mmap64 with very large offset broken on MIPS64 n32
|
||
[24740] libc: getdents64 type confusion
|
||
[24741] dynamic-link: ld.so should not require that a versioned symbol is
|
||
always implemented in the same library
|
||
[24744] libc: Remove copy_file_range emulation
|
||
[24757] malloc: memusagestat is linked against system libpthread
|
||
[24794] libc: Partial test suite run builds corrupt test-in-container
|
||
testroot
|
||
|
||
|
||
Version 2.29
|
||
|
||
Major new features:
|
||
|
||
* The getcpu wrapper function has been added, which returns the currently
|
||
used CPU and NUMA node. This function is Linux-specific.
|
||
|
||
* A new convenience target has been added for distribution maintainers
|
||
to build and install all locales as directories with files. The new
|
||
target is run by issuing the following command in your build tree:
|
||
'make localedata/install-locale-files', with an optional DESTDIR
|
||
to set the install root if you wish to install into a non-default
|
||
configured location.
|
||
|
||
* Optimized generic exp, exp2, log, log2, pow, sinf, cosf, sincosf and tanf.
|
||
|
||
* The reallocarray function is now declared under _DEFAULT_SOURCE, not just
|
||
for _GNU_SOURCE, to match BSD environments.
|
||
|
||
* For powercp64le ABI, Transactional Lock Elision is now enabled iff kernel
|
||
indicates that it will abort the transaction prior to entering the kernel
|
||
(PPC_FEATURE2_HTM_NOSC on hwcap2). On older kernels the transaction is
|
||
suspended, and this caused some undefined side-effects issues by aborting
|
||
transactions manually. Glibc avoided it by abort transactions manually on
|
||
each syscall, but it lead to performance issues on newer kernels where the
|
||
HTM state is saved and restore lazily (the state being saved even when the
|
||
process actually does not use HTM).
|
||
|
||
* The functions posix_spawn_file_actions_addchdir_np and
|
||
posix_spawn_file_actions_addfchdir_np have been added, enabling
|
||
posix_spawn and posix_spawnp to run the new process in a different
|
||
directory. These functions are GNU extensions. The function
|
||
posix_spawn_file_actions_addchdir_np is similar to the Solaris function
|
||
of the same name.
|
||
|
||
* The popen and system do not run atfork handlers anymore (BZ#17490).
|
||
Although it is a possible POSIX violation, the POSIX rationale in
|
||
pthread_atfork documentation regarding atfork handlers is to handle
|
||
inconsistent mutex state after a fork call in a multi-threaded process.
|
||
In both popen and system there is no direct access to user-defined mutexes.
|
||
|
||
* Support for the C-SKY ABIV2 running on Linux has been added. This port
|
||
requires at least binutils-2.32, gcc-9.0, and linux-4.20. Two ABIs are
|
||
supported:
|
||
- C-SKY ABIV2 soft-float little-endian
|
||
- C-SKY ABIV2 hard-float little-endian
|
||
|
||
* strftime's default formatting of a locale's alternative year (%Ey)
|
||
has been changed to zero-pad the year to a minimum of two digits,
|
||
like "%y". This improves the display of Japanese era years during
|
||
the first nine years of a new era, and is expected to be harmless
|
||
for all other locales (only Japanese locales regularly have
|
||
alternative year numbers less than 10). Zero-padding can be
|
||
overridden with the '_' or '-' flags (which are GNU extensions).
|
||
|
||
* As a GNU extension, the '_' and '-' flags can now be applied to
|
||
"%EY" to control how the year number is formatted; they have the
|
||
same effect that they would on "%Ey".
|
||
|
||
Deprecated and removed features, and other changes affecting compatibility:
|
||
|
||
* The glibc.tune tunable namespace has been renamed to glibc.cpu and the
|
||
tunable glibc.tune.cpu has been renamed to glibc.cpu.name.
|
||
|
||
* The type of the pr_uid and pr_gid members of struct elf_prpsinfo, defined
|
||
in <sys/procfs.h>, has been corrected to match the type actually used by
|
||
the Linux kernel. This affects the size and layout of that structure on
|
||
MicroBlaze, MIPS (n64 ABI only), Nios II and RISC-V.
|
||
|
||
* For the MIPS n32 ABI, the type of the pr_sigpend and pr_sighold members of
|
||
struct elf_prstatus, and the pr_flag member of struct elf_prpsinfo,
|
||
defined in <sys/procfs.h>, has been corrected to match the type actually
|
||
used by the Linux kernel. This affects the size and layout of those
|
||
structures.
|
||
|
||
* An archaic GNU extension to scanf, under which '%as', '%aS', and '%a[...]'
|
||
meant to scan a string and allocate space for it with malloc, is now
|
||
restricted to programs compiled in C89 or C++98 mode with _GNU_SOURCE
|
||
defined. This extension conflicts with C99's use of '%a' to scan a
|
||
hexadecimal floating-point number, which is now available to programs
|
||
compiled as C99 or C++11 or higher, regardless of _GNU_SOURCE.
|
||
|
||
POSIX.1-2008 includes the feature of allocating a buffer for string input
|
||
with malloc, using the modifier letter 'm' instead. Programs using
|
||
'%as', '%aS', or '%a[...]' with the old GNU meaning should change to
|
||
'%ms', '%mS', or '%m[...]' respectively. Programs that wish to use the
|
||
C99 '%a' no longer need to avoid _GNU_SOURCE.
|
||
|
||
GCC's -Wformat warnings can detect most uses of this extension, as long
|
||
as all functions that call vscanf, vfscanf, or vsscanf are annotated with
|
||
__attribute__ ((format (scanf, ...))).
|
||
|
||
Changes to build and runtime requirements:
|
||
|
||
* Python 3.4 or later is required to build the GNU C Library.
|
||
|
||
* On most architectures, GCC 5 or later is required to build the GNU C
|
||
Library. (On powerpc64le, GCC 6.2 or later is still required, as before.)
|
||
|
||
Older GCC versions and non-GNU compilers are still supported when
|
||
compiling programs that use the GNU C Library.
|
||
|
||
Security related changes:
|
||
|
||
CVE-2018-19591: A file descriptor leak in if_nametoindex can lead to a
|
||
denial of service due to resource exhaustion when processing getaddrinfo
|
||
calls with crafted host names. Reported by Guido Vranken.
|
||
|
||
CVE-2019-6488: On x32, the size_t parameter may be passed in the lower
|
||
32 bits of a 64-bit register with with non-zero upper 32 bit. When it
|
||
happened, accessing the 32-bit size_t value as the full 64-bit register
|
||
in the assembly string/memory functions would cause a buffer overflow.
|
||
Reported by H.J. Lu.
|
||
|
||
CVE-2016-10739: The getaddrinfo function could successfully parse IPv4
|
||
addresses with arbitrary trailing characters, potentially leading to data
|
||
or command injection issues in applications.
|
||
|
||
The following bugs are resolved with this release:
|
||
|
||
[10425] localedata: it_IT/it_CH: LC_TIME format is wrong
|
||
[10496] localedata: 12h time representation in multiple locales faulty
|
||
[10797] localedata: it_IT locale numeric does not have a separator for
|
||
thousands
|
||
[11319] libc: dprintf doesn't handle errors properly
|
||
[16346] time: mktime: potentially unsafe use of localtime_offset
|
||
[17248] build: glibc should not sort CFLAGS (support gcc plugins and
|
||
--param options)
|
||
[17405] libc: Implement posix_spawn_file_actions_addchdir_np,
|
||
posix_spawn_file_actions_addfchdir_np
|
||
[17426] localedata: Indian locales: set the correct date format
|
||
[17490] stdio: popen should not invoke atfork handlers
|
||
[17783] libc: TIOCSER_TEMT conditions inconsistent
|
||
[18040] regex: use-after-free in regexec/get_subexp
|
||
[18093] libc: Corrupted aux-cache causes ldconfig to segfault
|
||
[20018] network: getaddrinfo should reject IP addresses with trailing
|
||
characters (CVE-2016-10739)
|
||
[20209] localedata: Spelling mistake for Sunday in Greenlandic kl_GL
|
||
[20271] libc: Missing "\n" in __libc_fatal calls
|
||
[20480] dynamic-link: Patch: ifunc not executable, crashes sudo qemu
|
||
[20544] libc: RFE: atexit, __cxa_atexit, on_exit should assert function
|
||
pointer argument is non-NULL
|
||
[21037] stdio: open_memstream and freopen
|
||
[21286] libc: bits/siginfo.h is missing enum definition for TRAP_HWBKPT
|
||
[21716] time: Crash in glibc's mktime in low-memory situations
|
||
[22834] stdio: Subprocess forked by popen may crash in Linux when
|
||
multithreads call popen
|
||
[22927] network: crash in vn_gai_enqueue_request if requests_tail was NULL
|
||
and pthread_create fails.
|
||
[23032] hurd: sysdeps/htl/pt-barrier-init.c:39: bad call to memcmp ?
|
||
[23125] libc: riscv64: endless loop when throwing an exception from a
|
||
constructor
|
||
[23275] nptl: Race in pthread_mutex_lock while promoting to
|
||
PTHREAD_MUTEX_ELISION_NP.
|
||
[23400] libc: stdlib/test-bz22786.c creates temporary files in glibc
|
||
source tree
|
||
[23479] math: [mips] bits/fenv.h should not define some macros for soft-
|
||
float
|
||
[23490] libc: sysdeps/unix/sysv/linux/x86/tst-cet-property-2.c:49: off by
|
||
one error
|
||
[23497] libc: readdir64@GLIBC_2.1 cannot parse the kernel directory stream
|
||
[23509] dynamic-link: CET enabled glibc is incompatible with the older
|
||
linker
|
||
[23520] nscd: nscd: Use-after-free in addgetnetgrentX and its callers
|
||
[23521] nss: get_next_alias nss_files file stream leak
|
||
[23538] nptl: Hang in pthread_cond_broadcast
|
||
[23562] libc: Wrong type for si_band in Linux-specific siginfo_t
|
||
[23578] regex: Invalid memory access if regex pattern contains NUL byte
|
||
[23579] libc: Errors misreported in preadv2
|
||
[23597] build: support/test-container.c doesn't work with different
|
||
filesystems
|
||
[23603] time: mktime signed integer overflow on large timestamps
|
||
[23606] libc: Missing ENDBR32 in sysdeps/i386/start.S
|
||
[23614] libc: powerpc: missing CFI register information in __mpn_*
|
||
functions
|
||
[23637] string: Generic strstr/strcasestr fails with huge needles
|
||
[23640] libc: no way to easily clear FD_CLOEXEC in
|
||
posix_spawn_file_actions_adddup2()
|
||
[23649] libc: [microblaze/mips/nios2/riscv] sys/procfs.h pr_uid, pr_gid
|
||
have wrong type
|
||
[23656] libc: [mips n32] sys/procfs.h pr_sigpend, pr_sighold, pr_flag have
|
||
wrong type
|
||
[23679] libc: gethostid: Missing NULL check for gethostbyname_r result
|
||
[23689] libc: Bug in documentation for rusage.ru_ixrss in
|
||
bits/types/struct_rusage.h
|
||
[23690] dynamic-link: Segfault in _dl_profile_fixup with a high number of
|
||
threads
|
||
[23707] dynamic-link: Missing unwind info in sysdeps/powerpc/powerpc32/dl-
|
||
start.S
|
||
[23709] string: glibc 2.25 lacks sse2 optimized strstr()
|
||
[23716] dynamic-link: _dl_runtime_resolve_shstk isn't selected properly
|
||
[23717] libc: glibc: stdlib/tst-setcontext9 test suite failure on
|
||
powerpc64le
|
||
[23724] localedata: Albanian date formats are incorrect
|
||
[23735] math: libnldbl_nonshared.a references internal libm symbols
|
||
[23740] localedata: kl_GL: Month names and date formats need update
|
||
[23744] regex: regex refactorings to remove BE, avoid duplication
|
||
[23745] time: mktime fix for Gnulib + coreutils
|
||
[23758] time: Improve the width of alternate representation for year in
|
||
strftime
|
||
[23783] libc: [mips] Missing CMSPAR bits/termios.h
|
||
[23789] time: mktime does not set errno on failure
|
||
[23791] localedata: Wrong monetary format for ca_ES locale
|
||
[23793] locale: c32rtomb and mbrtoc32 should not alias wcrtomb and mbrtowc
|
||
[23794] locale: c16rtomb does not handle surrogate pairs
|
||
[23821] libc: si_band in siginfo_t has wrong type long int on sparc64
|
||
[23822] math: ia64 static libm.a is missing exp2f, log2f and powf symbols
|
||
[23836] time: time/tst-mktime2 test failure on Arm (32-bit)
|
||
[23848] libc: [sparc] Some socket syscalls wrongly assumed to be present
|
||
[23861] nptl: rdlock stalls indefinitely on an unlocked pthread rwlock
|
||
[23862] libc: [sh] missing kernel-features.h undefines
|
||
[23864] libc: [riscv] missing kernel-features.h undefines
|
||
[23867] libc: [arm/microblaze] __ASSUME_MLOCK2 incorrect
|
||
[23907] malloc: Incorrect double-free malloc tcache check disregards
|
||
tcache size
|
||
[23913] libc: off-by-one in function maybe_script_execute in
|
||
sysdeps/posix/spawni.c
|
||
[23915] libc: [arm] __ASSUME_COPY_FILE_RANGE incorrect
|
||
[23923] locale: Add --no-hard-links option to localedef
|
||
[23927] network: Linux if_nametoindex() does not close descriptor
|
||
(CVE-2018-19591)
|
||
[23961] math: powf can overflow to inf without setting errno in non-
|
||
nearest rounding mode
|
||
[23967] libc: [2.28 Regression]: New sigaction implementation breaks m68k
|
||
[23972] libc: __old_getdents64 uses wrong d_off value on overflow
|
||
[23993] libc: glibc 2.29 doesn't build with gcc 4.9
|
||
[23995] localedata: Remove execution flags from localedata/locales/bi_VU
|
||
[24011] localedata: Fixed small type in comment for locale bs_BA
|
||
[24018] libc: gettext() may return NULL
|
||
[24022] build: riscv build failure with Linux kernel 4.20-rc7
|
||
[24023] build: [2.29 Regression] FAIL: elf/check-localplt
|
||
[24024] string: strerror() might set errno to ENOMEM due to -fno-math-
|
||
error
|
||
[24027] malloc: glibc: realloc() ncopies 32-bit integer overflow
|
||
[24034] libc: tst-cancel21-static fails with SIGBUS on pre-ARMv7 when
|
||
using GCC 8
|
||
[24046] localedata: en_US locale doesn't define date_fmt
|
||
[24063] manual: @var{errno} should be @code{errno}
|
||
[24066] soft-fp: Inconsistent _FP_W_TYPE_SIZE check
|
||
[24088] libc: VSCR field is not being correctly read in ucontext_t on
|
||
ppc64le
|
||
[24096] time: Specifying '_' or '-' flag for "%EY" does not produce the
|
||
expected result
|
||
[24097] string: Can't use 64-bit register for size_t in assembly codes for
|
||
x32 (CVE-2019-6488)
|
||
[24110] hurd: SS_DISABLE never set in stack_t value returned by
|
||
sigaltstack
|
||
[24112] network: Do not send DNS queries for non-host names (where all
|
||
answers will be rejected)
|
||
[24130] libc: alpha __remqu corrupts $f3 register
|
||
|
||
|
||
Version 2.28
|
||
|
||
Major new features:
|
||
|
||
* The localization data for ISO 14651 is updated to match the 2016
|
||
Edition 4 release of the standard, this matches data provided by
|
||
Unicode 9.0.0. This update introduces significant improvements to the
|
||
collation of Unicode characters. This release deviates slightly from
|
||
the standard in that the collation element ordering for lowercase and
|
||
uppercase LATIN script characters is adjusted to ensure that regular
|
||
expressions with ranges like [a-z] and [A-Z] don't interleave e.g. A
|
||
is not matched by [a-z]. With the update many locales have been
|
||
updated to take advantage of the new collation information. The new
|
||
collation information has increased the size of the compiled locale
|
||
archive or binary locales.
|
||
|
||
* The GNU C Library can now be compiled with support for Intel CET, AKA
|
||
Intel Control-flow Enforcement Technology. When the library is built
|
||
with --enable-cet, the resulting glibc is protected with indirect
|
||
branch tracking (IBT) and shadow stack (SHSTK). CET-enabled glibc is
|
||
compatible with all existing executables and shared libraries. This
|
||
feature is currently supported on i386, x86_64 and x32 with GCC 8 and
|
||
binutils 2.29 or later. Note that CET-enabled glibc requires CPUs
|
||
capable of multi-byte NOPs, like x86-64 processors as well as Intel
|
||
Pentium Pro or newer. NOTE: --enable-cet has been tested for i686,
|
||
x86_64 and x32 on non-CET processors. --enable-cet has been tested
|
||
for x86_64 and x32 on CET SDVs, but Intel CET support hasn't been
|
||
validated for i686.
|
||
|
||
* The GNU C Library now has correct support for ABSOLUTE symbols
|
||
(SHN_ABS-relative symbols). Previously such ABSOLUTE symbols were
|
||
relocated incorrectly or in some cases discarded. The GNU linker can
|
||
make use of the newer semantics, but it must communicate it to the
|
||
dynamic loader by setting the ELF file's identification (EI_ABIVERSION
|
||
field) to indicate such support is required.
|
||
|
||
* Unicode 11.0.0 Support: Character encoding, character type info, and
|
||
transliteration tables are all updated to Unicode 11.0.0, using
|
||
generator scripts contributed by Mike FABIAN (Red Hat).
|
||
|
||
* <math.h> functions that round their results to a narrower type are added
|
||
from TS 18661-1:2014 and TS 18661-3:2015:
|
||
|
||
- fadd, faddl, daddl and corresponding fMaddfN, fMaddfNx, fMxaddfN and
|
||
fMxaddfNx functions.
|
||
|
||
- fsub, fsubl, dsubl and corresponding fMsubfN, fMsubfNx, fMxsubfN and
|
||
fMxsubfNx functions.
|
||
|
||
- fmul, fmull, dmull and corresponding fMmulfN, fMmulfNx, fMxmulfN and
|
||
fMxmulfNx functions.
|
||
|
||
- fdiv, fdivl, ddivl and corresponding fMdivfN, fMdivfNx, fMxdivfN and
|
||
fMxdivfNx functions.
|
||
|
||
* Two grammatical forms of month names are now supported for the following
|
||
languages: Armenian, Asturian, Catalan, Czech, Kashubian, Occitan, Ossetian,
|
||
Scottish Gaelic, Upper Sorbian, and Walloon. The following languages now
|
||
support two grammatical forms in abbreviated month names: Catalan, Greek,
|
||
and Kashubian.
|
||
|
||
* Newly added locales: Lower Sorbian (dsb_DE) and Yakut (sah_RU) also
|
||
include the support for two grammatical forms of month names.
|
||
|
||
* Building and running on GNU/Hurd systems now works without out-of-tree
|
||
patches.
|
||
|
||
* The renameat2 function has been added, a variant of the renameat function
|
||
which has a flags argument. If the flags are zero, the renameat2 function
|
||
acts like renameat. If the flag is not zero and there is no kernel
|
||
support for renameat2, the function will fail with an errno value of
|
||
EINVAL. This is different from the existing gnulib function renameatu,
|
||
which performs a plain rename operation in case of a RENAME_NOREPLACE
|
||
flags and a non-existing destination (and therefore has a race condition
|
||
that can clobber the destination inadvertently).
|
||
|
||
* The statx function has been added, a variant of the fstatat64
|
||
function with an additional flags argument. If there is no direct
|
||
kernel support for statx, glibc provides basic stat support based on
|
||
the fstatat64 function.
|
||
|
||
* IDN domain names in getaddrinfo and getnameinfo now use the system libidn2
|
||
library if installed. libidn2 version 2.0.5 or later is recommended. If
|
||
libidn2 is not available, internationalized domain names are not encoded
|
||
or decoded even if the AI_IDN or NI_IDN flags are passed to getaddrinfo or
|
||
getnameinfo. (getaddrinfo calls with non-ASCII names and AI_IDN will fail
|
||
with an encoding error.) Flags which used to change the IDN encoding and
|
||
decoding behavior (AI_IDN_ALLOW_UNASSIGNED, AI_IDN_USE_STD3_ASCII_RULES,
|
||
NI_IDN_ALLOW_UNASSIGNED, NI_IDN_USE_STD3_ASCII_RULES) have been
|
||
deprecated. They no longer have any effect.
|
||
|
||
* Parsing of dynamic string tokens in DT_RPATH, DT_RUNPATH, DT_NEEDED,
|
||
DT_AUXILIARY, and DT_FILTER has been expanded to support the full
|
||
range of ELF gABI expressions including such constructs as
|
||
'$ORIGIN$ORIGIN' (if valid). For SUID/GUID applications the rules
|
||
have been further restricted, and where in the past a dynamic string
|
||
token sequence may have been interpreted as a literal string it will
|
||
now cause a load failure. These load failures were always considered
|
||
unspecified behaviour from the perspective of the dynamic loader, and
|
||
for safety are now load errors e.g. /foo/${ORIGIN}.so in DT_NEEDED
|
||
results in a load failure now.
|
||
|
||
* Support for ISO C threads (ISO/IEC 9899:2011) has been added. The
|
||
implementation includes all the standard functions provided by
|
||
<threads.h>:
|
||
|
||
- thrd_current, thrd_equal, thrd_sleep, thrd_yield, thrd_create,
|
||
thrd_detach, thrd_exit, and thrd_join for thread management.
|
||
|
||
- mtx_init, mtx_lock, mtx_timedlock, mtx_trylock, mtx_unlock, and
|
||
mtx_destroy for mutual exclusion.
|
||
|
||
- call_once for function call synchronization.
|
||
|
||
- cnd_broadcast, cnd_destroy, cnd_init, cnd_signal, cnd_timedwait, and
|
||
cnd_wait for conditional variables.
|
||
|
||
- tss_create, tss_delete, tss_get, and tss_set for thread-local storage.
|
||
|
||
Application developers must link against libpthread to use ISO C threads.
|
||
|
||
Deprecated and removed features, and other changes affecting compatibility:
|
||
|
||
* The nonstandard header files <libio.h> and <_G_config.h> are no longer
|
||
installed. Software that was using either header should be updated to
|
||
use standard <stdio.h> interfaces instead.
|
||
|
||
* The stdio functions 'getc' and 'putc' are no longer defined as macros.
|
||
This was never required by the C standard, and the macros just expanded
|
||
to call alternative names for the same functions. If you hoped getc and
|
||
putc would provide performance improvements over fgetc and fputc, instead
|
||
investigate using (f)getc_unlocked and (f)putc_unlocked, and, if
|
||
necessary, flockfile and funlockfile.
|
||
|
||
* All stdio functions now treat end-of-file as a sticky condition. If you
|
||
read from a file until EOF, and then the file is enlarged by another
|
||
process, you must call clearerr or another function with the same effect
|
||
(e.g. fseek, rewind) before you can read the additional data. This
|
||
corrects a longstanding C99 conformance bug. It is most likely to affect
|
||
programs that use stdio to read interactive input from a terminal.
|
||
(Bug #1190.)
|
||
|
||
* The macros 'major', 'minor', and 'makedev' are now only available from
|
||
the header <sys/sysmacros.h>; not from <sys/types.h> or various other
|
||
headers that happen to include <sys/types.h>. These macros are rarely
|
||
used, not part of POSIX nor XSI, and their names frequently collide with
|
||
user code; see https://sourceware.org/bugzilla/show_bug.cgi?id=19239 for
|
||
further explanation.
|
||
|
||
<sys/sysmacros.h> is a GNU extension. Portable programs that require
|
||
these macros should first include <sys/types.h>, and then include
|
||
<sys/sysmacros.h> if __GNU_LIBRARY__ is defined.
|
||
|
||
* The tilegx*-*-linux-gnu configurations are no longer supported.
|
||
|
||
* The obsolete function ustat is no longer available to newly linked
|
||
binaries; the headers <ustat.h> and <sys/ustat.h> have been removed. This
|
||
function has been deprecated in favor of fstatfs and statfs.
|
||
|
||
* The obsolete function nfsservctl is no longer available to newly linked
|
||
binaries. This function was specific to systems using the Linux kernel
|
||
and could not usefully be used with the GNU C Library on systems with
|
||
version 3.1 or later of the Linux kernel.
|
||
|
||
* The obsolete function name llseek is no longer available to newly linked
|
||
binaries. This function was specific to systems using the Linux kernel
|
||
and was not declared in a header. Programs should use the lseek64 name
|
||
for this function instead.
|
||
|
||
* The AI_IDN_ALLOW_UNASSIGNED and NI_IDN_ALLOW_UNASSIGNED flags for the
|
||
getaddrinfo and getnameinfo functions have been deprecated. The behavior
|
||
previously selected by them is now always enabled.
|
||
|
||
* The AI_IDN_USE_STD3_ASCII_RULES and NI_IDN_USE_STD3_ASCII_RULES flags for
|
||
the getaddrinfo and getnameinfo functions have been deprecated. The STD3
|
||
restriction (rejecting '_' in host names, among other things) has been
|
||
removed, for increased compatibility with non-IDN name resolution.
|
||
|
||
* The fcntl function now have a Long File Support variant named fcntl64. It
|
||
is added to fix some Linux Open File Description (OFD) locks usage on non
|
||
LFS mode. As for others *64 functions, fcntl64 semantics are analogous with
|
||
fcntl and LFS support is handled transparently. Also for Linux, the OFD
|
||
locks act as a cancellation entrypoint.
|
||
|
||
* The obsolete functions encrypt, encrypt_r, setkey, setkey_r, cbc_crypt,
|
||
ecb_crypt, and des_setparity are no longer available to newly linked
|
||
binaries, and the headers <rpc/des_crypt.h> and <rpc/rpc_des.h> are no
|
||
longer installed. These functions encrypted and decrypted data with the
|
||
DES block cipher, which is no longer considered secure. Software that
|
||
still uses these functions should switch to a modern cryptography library,
|
||
such as libgcrypt.
|
||
|
||
* Reflecting the removal of the encrypt and setkey functions above, the
|
||
macro _XOPEN_CRYPT is no longer defined. As a consequence, the crypt
|
||
function is no longer declared unless _DEFAULT_SOURCE or _GNU_SOURCE is
|
||
enabled.
|
||
|
||
* The obsolete function fcrypt is no longer available to newly linked
|
||
binaries. It was just another name for the standard function crypt,
|
||
and it has not appeared in any header file in many years.
|
||
|
||
* We have tentative plans to hand off maintenance of the passphrase-hashing
|
||
library, libcrypt, to a separate development project that will, we hope,
|
||
keep up better with new passphrase-hashing algorithms. We will continue
|
||
to declare 'crypt' in <unistd.h>, and programs that use 'crypt' or
|
||
'crypt_r' should not need to change at all; however, distributions will
|
||
need to install <crypt.h> and libcrypt from a separate project.
|
||
|
||
In this release, if the configure option --disable-crypt is used, glibc
|
||
will not install <crypt.h> or libcrypt, making room for the separate
|
||
project's versions of these files. The plan is to make this the default
|
||
behavior in a future release.
|
||
|
||
Changes to build and runtime requirements:
|
||
|
||
GNU make 4.0 or later is now required to build glibc.
|
||
|
||
Security related changes:
|
||
|
||
CVE-2016-6261, CVE-2016-6263, CVE-2017-14062: Various vulnerabilities have
|
||
been fixed by removing the glibc-internal IDNA implementation and using
|
||
the system-provided libidn2 library instead. Originally reported by Hanno
|
||
Böck and Christian Weisgerber.
|
||
|
||
CVE-2017-18269: An SSE2-based memmove implementation for the i386
|
||
architecture could corrupt memory. Reported by Max Horn.
|
||
|
||
CVE-2018-11236: Very long pathname arguments to realpath function could
|
||
result in an integer overflow and buffer overflow. Reported by Alexey
|
||
Izbyshev.
|
||
|
||
CVE-2018-11237: The mempcpy implementation for the Intel Xeon Phi
|
||
architecture could write beyond the target buffer, resulting in a buffer
|
||
overflow. Reported by Andreas Schwab.
|
||
|
||
The following bugs are resolved with this release:
|
||
|
||
[1190] stdio: fgetc()/fread() behaviour is not POSIX compliant
|
||
[6889] manual: 'PWD' mentioned but not specified
|
||
[13575] libc: SSIZE_MAX defined as LONG_MAX is inconsistent with ssize_t,
|
||
when __WORDSIZE != 64
|
||
[13762] regex: re_search etc. should return -2 on memory exhaustion
|
||
[13888] build: /tmp usage during testing
|
||
[13932] math: dbl-64 pow unexpectedly slow for some inputs
|
||
[14092] nptl: Support C11 threads
|
||
[14095] localedata: Review / update collation data from Unicode / ISO
|
||
14651
|
||
[14508] libc: -Wformat warnings
|
||
[14553] libc: Namespace pollution loff_t in sys/types.h
|
||
[14890] libc: Make NT_PRFPREG canonical.
|
||
[15105] libc: Extra PLT references with -Os
|
||
[15512] libc: __bswap_constant_16 not compiled when -Werror -Wsign-
|
||
conversion is given
|
||
[16335] manual: Feature test macro documentation incomplete and out of
|
||
date
|
||
[16552] libc: Unify umount implementations in terms of umount2
|
||
[17082] libc: htons et al.: statement-expressions prevent use on global
|
||
scope with -O1 and higher
|
||
[17343] libc: Signed integer overflow in /stdlib/random_r.c
|
||
[17438] localedata: pt_BR: wrong d_fmt delimiter
|
||
[17662] libc: please implement binding for the new renameat2 syscall
|
||
[17721] libc: __restrict defined as /* Ignore */ even in c11
|
||
[17979] libc: inconsistency between uchar.h and stdint.h
|
||
[18018] dynamic-link: Additional $ORIGIN handling issues (CVE-2011-0536)
|
||
[18023] libc: extend_alloca is broken (questionable pointer comparison,
|
||
horrible machine code)
|
||
[18124] libc: hppa: setcontext erroneously returns -1 as exit code for
|
||
last constant.
|
||
[18471] libc: llseek should be a compat symbol
|
||
[18473] soft-fp: [powerpc-nofpu] __sqrtsf2, __sqrtdf2 should be compat
|
||
symbols
|
||
[18991] nss: nss_files skips large entry in database
|
||
[19239] libc: Including stdlib.h ends up with macros major and minor being
|
||
defined
|
||
[19463] libc: linknamespace failures when compiled with -Os
|
||
[19485] localedata: csb_PL: Update month translations + add yesstr/nostr
|
||
[19527] locale: Normalized charset name not recognized by setlocale
|
||
[19667] string: Missing Sanity Check for malloc calls in file 'testcopy.c'
|
||
[19668] libc: Missing Sanity Check for malloc() in file 'tst-setcontext-
|
||
fpscr.c'
|
||
[19728] network: out of bounds stack read in libidn function
|
||
idna_to_ascii_4i (CVE-2016-6261)
|
||
[19729] network: out of bounds heap read on invalid utf-8 inputs in
|
||
stringprep_utf8_nfkc_normalize (CVE-2016-6263)
|
||
[19818] dynamic-link: Absolute (SHN_ABS) symbols incorrectly relocated by
|
||
the base address
|
||
[20079] libc: Add SHT_X86_64_UNWIND to elf.h
|
||
[20251] libc: 32bit programs pass garbage in struct flock for OFD locks
|
||
[20419] dynamic-link: files with large allocated notes crash in
|
||
open_verify
|
||
[20530] libc: bswap_16 should use __builtin_bswap16() when available
|
||
[20890] dynamic-link: ldconfig: fsync the files before atomic rename
|
||
[20980] manual: CFLAGS environment variable replaces vital options
|
||
[21163] regex: Assertion failure in pop_fail_stack when executing a
|
||
malformed regexp (CVE-2015-8985)
|
||
[21234] manual: use of CFLAGS makes glibc detect no optimization
|
||
[21269] dynamic-link: i386 sigaction sa_restorer handling is wrong
|
||
[21313] build: Compile Error GCC 5.4.0 MIPS with -0S
|
||
[21314] build: Compile Error GCC 5.2.0 MIPS with -0s
|
||
[21508] locale: intl/tst-gettext failure with latest msgfmt
|
||
[21547] localedata: Tibetan script collation broken (Dzongkha and Tibetan)
|
||
[21812] network: getifaddrs() returns entries with ifa_name == NULL
|
||
[21895] libc: ppc64 setjmp/longjmp not fully interoperable with static
|
||
dlopen
|
||
[21942] dynamic-link: _dl_dst_substitute incorrectly handles $ORIGIN: with
|
||
AT_SECURE=1
|
||
[22241] localedata: New locale: Yakut (Sakha) locale for Russia (sah_RU)
|
||
[22247] network: Integer overflow in the decode_digit function in
|
||
puny_decode.c in libidn (CVE-2017-14062)
|
||
[22342] nscd: NSCD not properly caching netgroup
|
||
[22391] nptl: Signal function clear NPTL internal symbols inconsistently
|
||
[22550] localedata: es_ES locale (and other es_* locales): collation
|
||
should treat ñ as a primary different character, sync the collation
|
||
for Spanish with CLDR
|
||
[22638] dynamic-link: sparc: static binaries are broken if glibc is built
|
||
by gcc configured with --enable-default-pie
|
||
[22639] time: year 2039 bug for localtime etc. on 64-bit platforms
|
||
[22644] string: memmove-sse2-unaligned on 32bit x86 produces garbage when
|
||
crossing 2GB threshold (CVE-2017-18269)
|
||
[22646] localedata: redundant data (LC_TIME) for es_CL, es_CU, es_EC and
|
||
es_BO
|
||
[22735] time: Misleading typo in time.h source comment regarding
|
||
CLOCKS_PER_SECOND
|
||
[22753] libc: preadv2/pwritev2 fallback code should handle offset=-1
|
||
[22761] libc: No trailing `%n' conversion specifier in FMT passed from
|
||
`__assert_perror_fail ()' to `__assert_fail_base ()'
|
||
[22766] libc: all glibc internal dlopen should use RTLD_NOW for robust
|
||
dlopen failures
|
||
[22786] libc: Stack buffer overflow in realpath() if input size is close
|
||
to SSIZE_MAX (CVE-2018-11236)
|
||
[22787] dynamic-link: _dl_check_caller returns false when libc is linked
|
||
through an absolute DT_NEEDED path
|
||
[22792] build: tcb-offsets.h dependency dropped
|
||
[22797] libc: pkey_get() uses non-reserved name of argument
|
||
[22807] libc: PTRACE_* constants missing for powerpc
|
||
[22818] glob: posix/tst-glob_lstat_compat failure on alpha
|
||
[22827] dynamic-link: RISC-V ELF64 parser mis-reads flag in ldconfig
|
||
[22830] malloc: malloc_stats doesn't restore cancellation state on stderr
|
||
[22848] localedata: ca_ES: update date definitions from CLDR
|
||
[22862] build: _DEFAULT_SOURCE is defined even when _ISOC11_SOURCE is
|
||
[22884] math: RISCV fmax/fmin handle signalling NANs incorrectly
|
||
[22896] localedata: Update locale data for an_ES
|
||
[22902] math: float128 test failures with GCC 8
|
||
[22918] libc: multiple common of `__nss_shadow_database'
|
||
[22919] libc: sparc32: backtrace yields infinite backtrace with
|
||
makecontext
|
||
[22926] libc: FTBFS on powerpcspe
|
||
[22932] localedata: lt_LT: Update of abbreviated month names from CLDR
|
||
required
|
||
[22937] localedata: Greek (el_GR, el_CY) locales actually need ab_alt_mon
|
||
[22947] libc: FAIL: misc/tst-preadvwritev2
|
||
[22963] localedata: cs_CZ: Add alternative month names
|
||
[22987] math: [powerpc/sparc] fdim inlines errno, exceptions handling
|
||
[22996] localedata: change LC_PAPER to en_US in es_BO locale
|
||
[22998] dynamic-link: execstack tests are disabled when SELinux is
|
||
disabled
|
||
[23005] network: Crash in __res_context_send after memory allocation
|
||
failure
|
||
[23007] math: strtod cannot handle -nan
|
||
[23024] nss: getlogin_r is performing NSS lookups when loginid isn't set
|
||
[23036] regex: regex equivalence class regression
|
||
[23037] libc: initialize msg_flags to zero for sendmmsg() calls
|
||
[23069] libc: sigaction broken on riscv64-linux-gnu
|
||
[23094] localedata: hr_HR: wrong thousands_sep and mon_thousands_sep
|
||
[23102] dynamic-link: Incorrect parsing of multiple consecutive $variable
|
||
patterns in runpath entries (e.g. $ORIGIN$ORIGIN)
|
||
[23137] nptl: s390: pthread_join sometimes block indefinitely (on 31bit
|
||
and libc build with -Os)
|
||
[23140] localedata: More languages need two forms of month names
|
||
[23145] libc: _init/_fini aren't marked as hidden
|
||
[23152] localedata: gd_GB: Fix typo in "May" (abbreviated)
|
||
[23171] math: C++ iseqsig for long double converts arguments to double
|
||
[23178] nscd: sudo will fail when it is run in concurrent with commands
|
||
that changes /etc/passwd
|
||
[23196] string: __mempcpy_avx512_no_vzeroupper mishandles large copies
|
||
(CVE-2018-11237)
|
||
[23206] dynamic-link: static-pie + dlopen breaks debugger interaction
|
||
[23208] localedata: New locale - Lower Sorbian (dsb)
|
||
[23233] regex: Memory leak in build_charclass_op function in file
|
||
posix/regcomp.c
|
||
[23236] stdio: Harden function pointers in _IO_str_fields
|
||
[23250] nptl: Offset of __private_ss differs from GCC
|
||
[23253] math: tgamma test suite failures on i686 with -march=x86-64
|
||
-mtune=generic -mfpmath=sse
|
||
[23259] dynamic-link: Unsubstituted ${ORIGIN} remains in DT_NEEDED for
|
||
AT_SECURE
|
||
[23264] libc: posix_spawnp wrongly executes ENOEXEC in non compat mode
|
||
[23266] nis: stringop-truncation warning with new gcc8.1 in nisplus-
|
||
parser.c
|
||
[23272] math: fma(INFINITY,INFIITY,0.0) should be INFINITY
|
||
[23277] math: nan function should not have const attribute
|
||
[23279] math: scanf and strtod wrong for some hex floating-point
|
||
[23280] math: wscanf rounds wrong; wcstod is ok for negative numbers and
|
||
directed rounding
|
||
[23290] localedata: IBM273 is not equivalent to ISO-8859-1
|
||
[23303] build: undefined reference to symbol
|
||
'__parse_hwcap_and_convert_at_platform@@GLIBC_2.23'
|
||
[23307] dynamic-link: Absolute symbols whose value is zero ignored in
|
||
lookup
|
||
[23313] stdio: libio vtables validation and standard file object
|
||
interposition
|
||
[23329] libc: The __libc_freeres infrastructure is not properly run across
|
||
DSO boundaries.
|
||
[23349] libc: Various glibc headers no longer compatible with
|
||
<linux/time.h>
|
||
[23351] malloc: Remove unused code related to heap dumps and malloc
|
||
checking
|
||
[23363] stdio: stdio-common/tst-printf.c has non-free license
|
||
[23396] regex: Regex equivalence regression in single-byte locales
|
||
[23422] localedata: oc_FR: More updates of locale data
|
||
[23442] build: New warning with GCC 8
|
||
[23448] libc: Out of bounds access in IBM-1390 converter
|
||
[23456] libc: Wrong index_cpu_LZCNT
|
||
[23458] build: tst-get-cpu-features-static isn't added to tests
|
||
[23459] libc: COMMON_CPUID_INDEX_80000001 isn't populated for Intel
|
||
processors
|
||
[23467] dynamic-link: x86/CET: A property note parser bug
|
||
|
||
|
||
Version 2.27
|
||
|
||
Major new features:
|
||
|
||
* The GNU C Library can now be compiled with support for building static
|
||
PIE executables (See --enable-static-pie in INSTALL). These static PIE
|
||
executables are like static executables but can be loaded at any address
|
||
and provide additional security hardening benefits at the cost of some
|
||
memory and performance. When the library is built with --enable-static-pie
|
||
the resulting libc.a is usable with GCC 8 and above to create static PIE
|
||
executables using the GCC option '-static-pie'. This feature is currently
|
||
supported on i386, x86_64 and x32 with binutils 2.29 or later, and on
|
||
aarch64 with binutils 2.30 or later.
|
||
|
||
* Optimized x86-64 asin, atan2, exp, expf, log, pow, atan, sin, cosf,
|
||
sinf, sincosf and tan with FMA, contributed by Arjan van de Ven and
|
||
H.J. Lu from Intel.
|
||
|
||
* Optimized x86-64 trunc and truncf for processors with SSE4.1.
|
||
|
||
* Optimized generic expf, exp2f, logf, log2f, powf, sinf, cosf and sincosf.
|
||
|
||
* In order to support faster and safer process termination the malloc API
|
||
family of functions will no longer print a failure address and stack
|
||
backtrace after detecting heap corruption. The goal is to minimize the
|
||
amount of work done after corruption is detected and to avoid potential
|
||
security issues in continued process execution. Reducing shutdown time
|
||
leads to lower overall process restart latency, so there is benefit both
|
||
from a security and performance perspective.
|
||
|
||
* The abort function terminates the process immediately, without flushing
|
||
stdio streams. Previous glibc versions used to flush streams, resulting
|
||
in deadlocks and further data corruption. This change also affects
|
||
process aborts as the result of assertion failures.
|
||
|
||
* On platforms where long double has the IEEE binary128 format (aarch64,
|
||
alpha, mips64, riscv, s390 and sparc), the math library now implements
|
||
_Float128 interfaces for that type, as defined by ISO/IEC TS 18661-3:2015.
|
||
These are the same interfaces added in version 2.26 for some platforms where
|
||
this format is supported but is not the format of long double.
|
||
|
||
* On platforms with support for _Float64x (aarch64, alpha, i386, ia64,
|
||
mips64, powerpc64le, riscv, s390, sparc and x86_64), the math library now
|
||
implements interfaces for that type, as defined by ISO/IEC TS
|
||
18661-3:2015. These are corresponding interfaces to those supported for
|
||
_Float128.
|
||
|
||
* The math library now implements interfaces for the _Float32, _Float64 and
|
||
_Float32x types, as defined by ISO/IEC TS 18661-3:2015. These are
|
||
corresponding interfaces to those supported for _Float128.
|
||
|
||
* glibc now implements the memfd_create and mlock2 functions on Linux.
|
||
|
||
* Support for memory protection keys was added. The <sys/mman.h> header now
|
||
declares the functions pkey_alloc, pkey_free, pkey_mprotect, pkey_set,
|
||
pkey_get.
|
||
|
||
* The copy_file_range function was added.
|
||
|
||
* Optimized memcpy, mempcpy, memmove, and memset for sparc M7.
|
||
|
||
* The ldconfig utility now processes `include' directives using the C/POSIX
|
||
collation ordering. Previous glibc versions used locale-specific
|
||
ordering, the change might break systems that relied on that.
|
||
|
||
* Support for two grammatical forms of month names has been added.
|
||
In a call to strftime, the "%B" and "%b" format specifiers will now
|
||
produce the grammatical form required when the month is used as part
|
||
of a complete date. New "%OB" and "%Ob" specifiers produce the form
|
||
required when the month is named by itself. For instance, in Greek
|
||
and in many Slavic and Baltic languages, "%B" will produce the month
|
||
in genitive case, and "%OB" will produce the month in nominative case.
|
||
|
||
In a call to strptime, "%B", "%b", "%h", "%OB", "%Ob", and "%Oh"
|
||
are all valid and will all accept any known form of month
|
||
name---standalone or complete, abbreviated or full. In a call to
|
||
nl_langinfo, the query constants MON_1..12 and ABMON_1..12 return
|
||
the strings used by "%B" and "%b", respectively. New query
|
||
constants ALTMON_1..12 and _NL_ABALTMON_1..12 return the strings
|
||
used by "%OB" and "%Ob", respectively.
|
||
|
||
In a locale definition file, use "alt_mon" and "ab_alt_mon" to
|
||
define the strings for %OB and %Ob, respectively; these have the
|
||
same syntax as "mon" and "abmon". These arrays are optional; if they
|
||
are not provided then they have the same content as "mon" and "abmon",
|
||
respectively.
|
||
|
||
These features are provided for locales which define "alt_mon" and/or
|
||
"ab_alt_mon" in their locale source data. This release includes such
|
||
alternative month name data for the following languages: Belarusian,
|
||
Croatian, Greek, Lithuanian, Polish, Russian, and Ukrainian.
|
||
|
||
This feature is currently a GNU extension, but it is expected to
|
||
be added to the next revision of POSIX, and it is also already
|
||
available on some BSD-derived operating systems.
|
||
|
||
This feature will cause existing statically compiled applications
|
||
to fail to load locales and fall back to the builtin C/POSIX locales.
|
||
See notes below for other changes affecting compatibility.
|
||
|
||
* Support for the RISC-V ISA running on Linux has been added. This port
|
||
requires at least binutils-2.30, gcc-7.3.0, and linux-4.15; and is supported
|
||
for the following ISA and ABI pairs:
|
||
|
||
- rv64imac lp64
|
||
- rv64imafdc lp64
|
||
- rv64imafdc lp64d
|
||
|
||
Deprecated and removed features, and other changes affecting compatibility:
|
||
|
||
* Statically compiled applications attempting to load locales compiled for the
|
||
GNU C Library version 2.27 will fail and fall back to the builtin C/POSIX
|
||
locale. The reason for this is that the addition of the new "%OB" and "%Ob",
|
||
support for two grammatical forms of the month names, also extends the locale
|
||
data binary format. Static applications needing locale support must be
|
||
recompiled to match the runtime and data they are deployed with. In some
|
||
distributions there is an upgrade window where dynamically linked applications
|
||
may use a new library but the old locale data and also fall back to the
|
||
builtin C/POSIX locales; restarting the application process is sufficient to
|
||
fix this.
|
||
|
||
* Support for statically linked applications which call dlopen is deprecated
|
||
and will be removed in a future version of glibc. Applications which call
|
||
dlopen need to be linked dynamically instead.
|
||
|
||
* Support for old programs which use internal stdio data structures and
|
||
functions is deprecated. This includes programs which use the C++ streams
|
||
provided by libstdc++ in GCC 2.95. Programs which use the internal
|
||
symbols _IO_adjust_wcolumn, _IO_default_doallocate, _IO_default_finish,
|
||
_IO_default_pbackfail, _IO_default_uflow, _IO_default_xsgetn,
|
||
_IO_default_xsputn, _IO_doallocbuf, _IO_do_write, _IO_file_attach,
|
||
_IO_file_close, _IO_file_close_it, _IO_file_doallocate, _IO_file_fopen,
|
||
_IO_file_init, _IO_file_jumps, _IO_fileno, _IO_file_open,
|
||
_IO_file_overflow, _IO_file_read, _IO_file_seek, _IO_file_seekoff,
|
||
_IO_file_setbuf, _IO_file_stat, _IO_file_sync, _IO_file_underflow,
|
||
_IO_file_write, _IO_file_xsputn, _IO_flockfile, _IO_flush_all,
|
||
_IO_flush_all_linebuffered, _IO_free_backup_area, _IO_free_wbackup_area,
|
||
_IO_init, _IO_init_marker, _IO_init_wmarker, _IO_iter_begin, _IO_iter_end,
|
||
_IO_iter_file, _IO_iter_next, _IO_least_wmarker, _IO_link_in,
|
||
_IO_list_all, _IO_list_lock, _IO_list_resetlock, _IO_list_unlock,
|
||
_IO_marker_delta, _IO_marker_difference, _IO_remove_marker, _IO_seekmark,
|
||
_IO_seekwmark, _IO_str_init_readonly, _IO_str_init_static,
|
||
_IO_str_overflow, _IO_str_pbackfail, _IO_str_seekoff, _IO_str_underflow,
|
||
_IO_switch_to_main_wget_area, _IO_switch_to_wget_mode,
|
||
_IO_unsave_wmarkers, _IO_wdefault_doallocate, _IO_wdefault_finish,
|
||
_IO_wdefault_pbackfail, _IO_wdefault_setbuf, _IO_wdefault_uflow,
|
||
_IO_wdefault_xsgetn, _IO_wdefault_xsputn, _IO_wdoallocbuf, _IO_wdo_write,
|
||
_IO_wfile_jumps, _IO_wfile_overflow, _IO_wfile_sync, _IO_wfile_underflow,
|
||
_IO_wfile_xsputn, _IO_wmarker_delta, or _IO_wsetb may stop working with a
|
||
future version of glibc. Unlike other symbol removals, these old
|
||
applications will not be supported using compatibility symbols.
|
||
|
||
* On GNU/Linux, the obsolete Linux constant PTRACE_SEIZE_DEVEL is no longer
|
||
defined by <sys/ptrace.h>.
|
||
|
||
* libm no longer supports SVID error handling (calling a user-provided
|
||
matherr function on error) or the _LIB_VERSION variable to control error
|
||
handling. (SVID error handling and the _LIB_VERSION variable still work
|
||
for binaries linked against older versions of the GNU C Library.) The
|
||
libieee.a library is no longer provided. math.h no longer defines struct
|
||
exception, or the macros X_TLOSS, DOMAIN, SING, OVERFLOW, UNDERFLOW,
|
||
TLOSS, PLOSS and HUGE.
|
||
|
||
* The libm functions pow10, pow10f and pow10l are no longer supported for
|
||
new programs. Programs should use the standard names exp10, exp10f and
|
||
exp10l for these functions instead.
|
||
|
||
* The mcontext_t type is no longer the same as struct sigcontext. On
|
||
platforms where it was previously the same, this changes the C++ name
|
||
mangling for interfaces involving this type.
|
||
|
||
* The add-ons mechanism for building additional packages at the same time as
|
||
glibc has been removed. The --enable-add-ons configure option is now
|
||
ignored.
|
||
|
||
* The --without-fp configure option is now ignored. Whether hardware
|
||
floating-point instructions are used is now configured based on whether
|
||
the compiler used at configure time (without any options implied by a
|
||
--with-cpu= configure option) uses such instructions.
|
||
|
||
* The res_hnok, res_dnok, res_mailok and res_ownok functions now check that
|
||
the specified string can be parsed as a domain name.
|
||
|
||
* In the malloc_info output, the <heap> element may contain another <aspace>
|
||
element, "subheaps", which contains the number of sub-heaps.
|
||
|
||
* The libresolv function p_secstodate is no longer supported for new
|
||
programs.
|
||
|
||
* The tilepro-*-linux-gnu configuration is no longer supported.
|
||
|
||
* The nonstandard header files <libio.h> and <_G_config.h> are deprecated
|
||
and will be removed in a future release. Software that is still using
|
||
either header should be updated to use standard <stdio.h> interfaces
|
||
instead.
|
||
|
||
libio.h was originally the header for a set of supported GNU extensions,
|
||
but they have not been maintained as such in many years, they are now
|
||
standing in the way of improvements to stdio, and we don't think there are
|
||
any remaining external users. _G_config.h was never intended for public
|
||
use, but predates the bits convention.
|
||
|
||
Changes to build and runtime requirements:
|
||
|
||
* bison version 2.7 or later is required to generate code in the 'intl'
|
||
subdirectory.
|
||
|
||
Security related changes:
|
||
|
||
CVE-2009-5064: The ldd script would sometimes run the program under
|
||
examination directly, without preventing code execution through the
|
||
dynamic linker. (The glibc project disputes that this is a security
|
||
vulnerability; only trusted binaries must be examined using the ldd
|
||
script.)
|
||
|
||
CVE-2017-15670: The glob function, when invoked with GLOB_TILDE,
|
||
suffered from a one-byte overflow during ~ operator processing (either
|
||
on the stack or the heap, depending on the length of the user name).
|
||
Reported by Tim Rühsen.
|
||
|
||
CVE-2017-15671: The glob function, when invoked with GLOB_TILDE,
|
||
would sometimes fail to free memory allocated during ~ operator
|
||
processing, leading to a memory leak and, potentially, to a denial
|
||
of service.
|
||
|
||
CVE-2017-15804: The glob function, when invoked with GLOB_TILDE and
|
||
without GLOB_NOESCAPE, could write past the end of a buffer while
|
||
unescaping user names. Reported by Tim Rühsen.
|
||
|
||
CVE-2017-17426: The malloc function, when called with an object size near
|
||
the value SIZE_MAX, would return a pointer to a buffer which is too small,
|
||
instead of NULL. This was a regression introduced with the new malloc
|
||
thread cache in glibc 2.26. Reported by Iain Buclaw.
|
||
|
||
CVE-2017-1000408: Incorrect array size computation in _dl_init_paths leads
|
||
to the allocation of too much memory. (This is not a security bug per se,
|
||
it is mentioned here only because of the CVE assignment.) Reported by
|
||
Qualys.
|
||
|
||
CVE-2017-1000409: Buffer overflow in _dl_init_paths due to miscomputation
|
||
of the number of search path components. (This is not a security
|
||
vulnerability per se because no trust boundary is crossed if the fix for
|
||
CVE-2017-1000366 has been applied, but it is mentioned here only because
|
||
of the CVE assignment.) Reported by Qualys.
|
||
|
||
CVE-2017-16997: Incorrect handling of RPATH or RUNPATH containing $ORIGIN
|
||
for AT_SECURE or SUID binaries could be used to load libraries from the
|
||
current directory.
|
||
|
||
CVE-2018-1000001: Buffer underflow in realpath function when getcwd function
|
||
succeeds without returning an absolute path due to unexpected behaviour
|
||
of the Linux kernel getcwd syscall. Reported by halfdog.
|
||
|
||
CVE-2018-6485: The posix_memalign and memalign functions, when called with
|
||
an object size near the value of SIZE_MAX, would return a pointer to a
|
||
buffer which is too small, instead of NULL. Reported by Jakub Wilk.
|
||
|
||
CVE-2018-6551: The malloc function, when called with an object size near
|
||
the value of SIZE_MAX, would return a pointer to a buffer which is too
|
||
small, instead of NULL.
|
||
|
||
The following bugs are resolved with this release:
|
||
|
||
[866] glob: glob should match dangling symlinks
|
||
[1062] glob: sysdeps/generic/glob.c merge from gnulib (part 3 of 3)
|
||
[2522] localedata: ca_ES@valencia: new Valencian (meridional Catalan)
|
||
locale
|
||
[5997] math: Very slow execution of sinf function
|
||
[10580] localedata: hr_HR: updated locale
|
||
[10871] locale: 'mon' array should contain both nominative and genitive
|
||
cases
|
||
[12349] localedata: eu_ES: incorrect thousands separator
|
||
[13605] localedata: shn_MM: new Shan locale
|
||
[13805] localedata: ru_RU: currency should use ',' as radix point
|
||
[13953] localedata: km_KH: locale update
|
||
[13994] localedata: mjw_IN: new locale
|
||
[14121] build: make writes .mo files in po directory
|
||
[14333] libc: Fix the race between atexit() and exit()
|
||
[14681] dynamic-link: _dl_get_origin leaks memory via executable link map.
|
||
[14925] localedata: bn_*: LC_IDENTIFICATION.language key should be
|
||
"Bangla"
|
||
[15260] localedata: LC_MESSAGES.{yes,no}{str,expr}: various errors
|
||
[15261] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of full-
|
||
width Latin characters
|
||
[15332] localedata: es_CU: locale update
|
||
[15436] stdio: Don't close or flush stdio streams on abort
|
||
[15537] localedata: lv_LV: invalid collation for Latvian diacritical
|
||
letters
|
||
[16148] localedata: ca_ES: incorrect thousands separator
|
||
[16750] dynamic-link: ldd should not try to execute the binaries
|
||
(CVE-2009-5064)
|
||
[16777] localedata: pl_PL: incorrect thousands separator in locale
|
||
[16905] localedata: hanzi: new collation
|
||
[17563] localedata: cmn_TW: add hanzi collation
|
||
[17750] localedata: wrong collation order of diacritics in most locales
|
||
[17804] libc: scandirat fails with ENOMEM because it checks for errno even
|
||
if malloc succeeded
|
||
[17956] build: Build fails on missing definitions from header file
|
||
nss/nss.h when Mozilla NSS is used for cryptography
|
||
[18203] libc: realpath() does not handle unreachable paths correctly
|
||
[18572] dynamic-link: [arm] Lazy TLSDESC relocation has data race
|
||
[18812] localedata: kab_DZ: new Kabyle Algeria locale
|
||
[18822] libc: Internal functions are called via PLT
|
||
[18858] string: _HAVE_STRING_ARCH_xxx aren't defined for i386 nor x86_64
|
||
[19170] libc: __gmon_start__ defined in hppa in crtn.S
|
||
[19574] libc: glibc should support building static PIE binaries
|
||
[19852] localedata: charmaps/UTF-8: incorrect wcwidth for U+3099 and
|
||
U+309A
|
||
[19971] glob: glob: Do not skip entries with zero d_ino values
|
||
[19982] localedata: fr.po: spelling mistake for error code EXDEV
|
||
[20008] localedata: km_KH: convert to translit_neutral
|
||
[20009] localedata: tr_TR: convert LC_CTYPE to i18n
|
||
[20142] math: [x86_64] Add SSE4.1 trunc, truncf
|
||
[20204] dynamic-link: _dl_open_hook and _dlfcn_hook hardening
|
||
[20482] localedata: de_CH: abbreviated weekdays should be two letters
|
||
[20498] localedata: miq_NI: new Mískitu / Miskito (miq) language locale
|
||
for Nicaragua
|
||
[20532] nss: getaddrinfo uses errno and h_errno without guaranteeing
|
||
they're set, wrong errors returned by gaih_inet when lookup functions
|
||
are not found.
|
||
[20756] localedata: [PATCH] Use Unicode wise thousands separator
|
||
[20826] network: posix/tst-getaddrinfo5 fails on hosts without network
|
||
access
|
||
[20952] localedata: yuw_PG: new locale
|
||
[21084] localedata: charmaps/IBM858: new codepage
|
||
[21161] manual: [PATCH] fix typo in manual/arith.texi on strtoul prototype
|
||
[21242] libc: assert gives pedantic warning in old gcc versions
|
||
[21265] dynamic-link: _dl_runtime_resolve isn't compatible with Intel C++
|
||
__regcall calling convention
|
||
[21309] math: signed integer overflow in sysdeps/ieee754/dbl-64/e_pow.c
|
||
[21326] libc: C99 functions are not declared for C++11 and later if
|
||
_GNU_SOURCE is not predefined by g++
|
||
[21457] libc: sys/ucontext.h namespace
|
||
[21530] libc: tmpfile() should be implemented using O_TMPFILE
|
||
[21660] math: GCC fails to compile a formula with tgmath.h
|
||
[21672] nptl: sys-libs/glibc on ia64 crashes on thread exit: signal
|
||
SIGSEGV, Segmentation fault: pthread_create.c:432: __madvise
|
||
(pd->stackblock, freesize - PTHREAD_STACK_MIN, MADV_DONTNEED);
|
||
[21684] math: tgmath.h handling of complex integers
|
||
[21685] math: tgmath.h handling of bit-fields
|
||
[21686] math: tgmath.h handling of __int128
|
||
[21706] localedata: yesstr and nostr are missing for Breton [LC_MESSAGES]
|
||
locale
|
||
[21745] libc: [powerpc64le] Extra PLT reference with --enable-stack-
|
||
protector=all
|
||
[21750] localedata: column width of characters incompatible with classical
|
||
wcwidth
|
||
[21754] malloc: malloc: Perform as little work as possible after heap
|
||
consistency check failures
|
||
[21780] libc: hppa: p{read,write}v2 does not set ENOSUP on invalid flag
|
||
[21790] libc: Missing __memset_zero_constant_len_parameter in libc.so
|
||
[21791] string: Unused XXX_chk_XXX functions in libc.a
|
||
[21815] dynamic-link: FAIL: elf/tst-prelink-cmp with GCC is defaulted to
|
||
PIE
|
||
[21836] localedata: Removed redundant data (LC_MONETARY) in various Indian
|
||
locales
|
||
[21845] localedata: Added new Locale bho_NP
|
||
[21853] localedata: Fix abday Which looks same as day in zh_SG
|
||
[21854] localedata: Added New Locale en_SC
|
||
[21864] libc: xmalloc.o is compiled with -DMODULE_NAME=libc
|
||
[21871] dynamic-link: _dl_runtime_resolve_avx_opt is slower than
|
||
_dl_runtime_resolve_avx_slow
|
||
[21885] network: getaddrinfo: gethosts does not release resolver context
|
||
on memory allocation failure
|
||
[21899] libc: XPG4.2 sigaction namespace
|
||
[21908] dynamic-link: dynamic linker broke on ia64 (mmap2 consolidation is
|
||
the suspect)
|
||
[21913] libc: static binaries SIGSEGV in __brk when host's gcc is pie-by-
|
||
default (i386)
|
||
[21915] nss: nss_files can return with NSS_STATUS_SUCCESS and a clobbered
|
||
errno value, causing getaddrinfo to fail
|
||
[21920] localedata: Fix p_cs_precedes/n_cs_precedes for mt_MT
|
||
[21922] network: getaddrinfo with AF_INET/AF_INET6 returns EAI_NONAME
|
||
instead of EAI_NODATA
|
||
[21928] libc: sys/ptrace.h: remove obsolete temporary development Linux
|
||
constant PTRACE_SEIZE_DEVEL
|
||
[21930] math: C-only gcc builtins used in <math.h> isinf
|
||
[21932] network: Unpaired __resolv_context_get in generic get*_r
|
||
implementation
|
||
[21941] math: powerpc: Wrong register constraint for xssqrtqp in sqrtf128
|
||
[21944] libc: sigval namespace
|
||
[21951] localedata: Update hanzi collation by stroke
|
||
[21955] math: Wrong alignment of L(SP_RANGE)/L(SP_INF_0) in
|
||
sysdeps/x86_64/fpu/e_expf.S
|
||
[21956] libc: Stack allocation in MIPS syscall impl (ubounded stack
|
||
allocation in syscall loops)
|
||
[21959] localedata: Fix Country name for xh_ZA
|
||
[21960] localedata: Fix abmon for bem_ZM
|
||
[21966] math: AVX2 mathvec functions use FMA without checking
|
||
[21967] math: When 512-bit AVX2 wrapper functions in mathvec are used?
|
||
[21971] localedata: Added New Locale for mfe_MU
|
||
[21972] libc: assert macro requires operator== (int) for its argument type
|
||
[21973] math: [sparc] libm missing sqrtl compat symbol
|
||
[21974] libc: Remove __bb_init_func and __bb_exit_func
|
||
[21982] string: stratcliff.c: error: assuming signed overflow does not
|
||
occur with -O3
|
||
[21986] stdio: __guess_grouping is called incorrectly
|
||
[21987] math: [sparc32] wrong bits/long-double.h installed
|
||
[22019] localedata: Wrong placement of monetary symbol in el_GR (negative
|
||
amounts)
|
||
[22022] localedata: Missing country_name for mni_IN
|
||
[22023] localedata: Removed redundant data (LC_TIME and LC_MESSAGES) for
|
||
niu_NZ
|
||
[22025] locale: iconv: Inconsistency between pointer mangling and NULL
|
||
checks
|
||
[22026] locale: iconv_open: heap overflow on gconv_init failure
|
||
[22028] math: bits/math-finite.h _MSUF_ expansion namespace
|
||
[22035] math: [m68k] bits/math-inline.h macro namespace
|
||
[22038] localedata: Fix abbreviated weeks and months for Somali
|
||
[22044] localedata: Remove redundant data for Limburgish Language
|
||
[22050] malloc: Linking with -lmcheck does not hook
|
||
__malloc_initialize_hook correctly
|
||
[22051] libc: zero terminator in the middle of glibc's .eh_frame
|
||
[22052] malloc: malloc failed to compile with GCC 7 and -O3
|
||
[22070] localedata: charmaps/UTF-8: wcwidth for
|
||
Prepended_Concatenation_Mark codepoints set to 0 (should be 1)
|
||
[22074] localedata: charmaps/UTF-8: wcwidth for U+1160-U+11FF (Hangul
|
||
Jungseong and Jongseong) should be 0
|
||
[22078] nss: nss_files performance issue in multi mode
|
||
[22082] math: bits/math-finite.h exp10 condition
|
||
[22086] libc: pcprofiledump incorrect cross-endian condition
|
||
[22093] dynamic-link: ld.so no longer searches in .../x86_64
|
||
[22095] network: Name server address allocation memory leak in resolv.conf
|
||
parsing after OOM
|
||
[22096] network: __resolv_conf_attach can incorrectly free passed conf
|
||
object
|
||
[22100] localedata: om_KE: LC_TIME: copy redundant data from om_ET
|
||
[22101] dynamic-link: Dynamic loader must ignore "debug" shared objects
|
||
e.g. ET_GNU_DEBUG_*
|
||
[22111] malloc: malloc: per thread cache is not returned when thread exits
|
||
[22112] localedata: Fix LC_TELEPHONE/LC_NAME for az_AZ
|
||
[22134] libc: [linux] implement fexecve with execveat
|
||
[22142] libc: [powerpc] printf outputs a wrong value of DBL_MAX on ppc64 and
|
||
ppc64le
|
||
[22145] libc: ttyname() gives up too early in the face of namespaces
|
||
[22146] math: C++ build issue with float128 on x86_64
|
||
[22153] nptl: nptl: save error code before process termination
|
||
[22156] libc: [hppa,ia64,microblaze] Executable stack default
|
||
[22159] malloc: malloc: MALLOC_CHECK_ broken with --enable-tunables=no
|
||
[22161] nscd: nscd cache prune for netgroups hangs after timeout bump
|
||
[22165] libc: [hppa] Text relocations in libc.so
|
||
[22180] libc: destructor registered via __cxa_atexit is called twice
|
||
[22183] glob: commit 5554304f0ddd ("posix: Allow glob to match dangling
|
||
symlinks") cause "make" segfaults
|
||
[22189] math: [powerpc] math_private.h definitions of math_opt_barrier and
|
||
math_force_eval
|
||
[22207] libc: FAIL: stdlib/test-atexit-race
|
||
[22225] math: nearbyint arithmetic moved before feholdexcept
|
||
[22229] math: [sparc32] missing copysignl, fabsl, fmal compat symbols
|
||
[22235] math: iscanonical in C++ and float128
|
||
[22243] math: log2(0) and log10(0) are wrong in downward rounding without
|
||
the svid compat wrapper
|
||
[22244] math: ynf and yn are wrong without the svid compat wrapper
|
||
[22273] libc: Improper assert in Linux posix_spawn implementation
|
||
[22284] libc: -pg -pie doesn't work
|
||
[22292] locale: localedef exits with error 4 when it should be error 1
|
||
[22294] locale: Allow "" for int_currency_symbol definition in locales.
|
||
[22295] locale: Don't warn on non-symbolic characters in locale sources in
|
||
--verbose.
|
||
[22296] math: glibc 2.26: signbit build issue with Gcc 5.5.0 on x86_64
|
||
[22298] nptl: x32: lockups on recursive pthread_mutex_lock after upgrade
|
||
to 2.26
|
||
[22299] dynamic-link: Problem with $PLATFORM on x86_64 platform
|
||
[22320] glob: Buffer overflow in glob with GLOB_TILDE (CVE-2017-15670)
|
||
[22321] libc: sysconf(_SC_IOV_MAX) returns -1 on Linux
|
||
[22322] libc: [mips64] wrong bits/long-double.h installed
|
||
[22325] glob: Memory leak in glob with GLOB_TILDE (CVE-2017-15671)
|
||
[22332] glob: Buffer overflow in glob with GLOB_TILDE in unescaping
|
||
(CVE-2017-15804)
|
||
[22336] localedata: cs_CZ LC_COLLATE does not use i18n
|
||
[22343] malloc: Integer overflow in posix_memalign
|
||
[22347] libc: getrandom() returns the number of bytes that were copied to
|
||
the buffer even though the comments say "Return 0 on success and -1 on
|
||
failure."
|
||
[22353] string: sysdeps/i386/i586/strcpy.S isn't maintainable
|
||
[22362] libc: Installed crt1.o, crti,.o and crtn.o files are used with
|
||
-m32
|
||
[22370] dynamic-link: Incorrect note padding check
|
||
[22375] libc: malloc returns pointer from tcache_get when should return
|
||
NULL (CVE-2017-17426)
|
||
[22377] math: iseqsig, float128 and C++
|
||
[22382] localedata: Error in tpi_PG locale
|
||
[22387] localedata: Replace unicode sequences <Uxxxx> for characters
|
||
inside the ASCII printable range
|
||
[22402] math: [powerpc64le] __MATH_TG does not support _Float128 for
|
||
-mlong-double-64
|
||
[22403] localedata: Slash needs escaping in some locales
|
||
[22408] malloc: malloc_info access heaps without arena lock, ignores heaps
|
||
[22409] network: res_hnok does not accept some host names used on the
|
||
Internet
|
||
[22412] network: res_dnok, res_hnok should perform syntax checks
|
||
[22413] network: ns_name_pton ignores syntactically invalid trailing
|
||
backslash
|
||
[22415] stdio: setvbuf can lead to invalid free/segfault
|
||
[22432] build: Non-deterministic build
|
||
[22439] malloc: malloc_info should compute summary statistics for all sub-
|
||
heaps in an arena
|
||
[22442] network: if_nametoindex could report index for the wrong
|
||
networking interface
|
||
[22446] build: aliasing violation calling readlink in handle_request
|
||
[22447] build: unsafe call to strlen with a non-string in getlogin_r.c
|
||
[22457] libc: Generic preadv/pwritev incorrectly calls __posix_memalign
|
||
[22459] libc: FAIL: elf/check-localplt with __stack_chk_fail related to
|
||
__nscd_hash/__nss_hash
|
||
[22463] network: p_secstodate overflow handling
|
||
[22469] localedata: pl_PL LC_COLLATE does not use i18n
|
||
[22478] libc: sigwait can fail with EINTR
|
||
[22505] libc: ldconfig processes include directive in locale-specific
|
||
order
|
||
[22515] localedata: hsb_DE LC_COLLATE does not use copy "iso14651_t1"
|
||
[22517] localedata: et_EE LC_COLLATE does not use copy "iso14651_t1"
|
||
[22519] localedata: is_IS LC_COLLATE does not use copy "iso14651_t1"
|
||
[22524] localedata: lt_LT LC_COLLATE does not use copy "iso14651_t1"
|
||
[22527] localedata: tr_TR LC_COLLATE does not use copy "iso14651_t1"
|
||
[22534] localedata: Collation rules for Serbian and Bosnian should be the
|
||
same as for Croatian
|
||
[22561] math: [DR#471] cacosh (0 + iNaN) should return NaN +/- i pi/2
|
||
[22568] math: [DR#471] ctanh (0 + iNaN), ctanh (0 + i Inf)
|
||
[22577] libc: missing newline after "cannot allocate TLS data structures
|
||
for initial thread"
|
||
[22588] manual: manual/conf.texi: missing underscore in front of
|
||
SC_SSIZE_MAX
|
||
[22593] math: nextafter and nexttoward are declared with const attribute
|
||
[22596] manual: manual: finite(nan) wrongly described as returning nonzero
|
||
[22603] string: ia64 memchr overflows internal pointer check
|
||
[22605] libc: SH clone does not set the exit code correctly
|
||
[22606] dynamic-link: Incorrect array size computation in _dl_init_paths
|
||
(CVE-2017-1000408)
|
||
[22607] dynamic-link: Buffer Overflow in _dl_init_paths (CVE-2017-1000409)
|
||
[22611] malloc: malloc/tst-realloc wrongly assumes that errno must not be
|
||
modified in case of success
|
||
[22614] build: gcc: error: unrecognized command line option ‘-no-pie’
|
||
[22615] manual: manual: ambiguous wording about errno value in case of
|
||
success
|
||
[22624] libc: MIPS setjmp() saves incorrect 'o0' register in --enable-
|
||
stack-protector=all
|
||
[22625] dynamic-link: RPATH $ORIGIN replaced by PWD for AT_SECURE/SUID
|
||
binaries or if /proc is not mounted (CVE-2017-16997)
|
||
[22627] dynamic-link: $ORIGIN in $LD_LIBRARY_PATH is substituted twice
|
||
[22630] build: $(no-pie-ldflag) is no longer effective
|
||
[22631] math: [m68k] Bad const attributes in bits/mathinline.h
|
||
[22635] nptl: pthread_self returns NULL before libpthread is loaded
|
||
[22636] nptl: PTHREAD_STACK_MIN is too small on x86-64
|
||
[22637] nptl: guard size is subtracted from thread stack size instead of
|
||
adding it on top
|
||
[22648] libc: getrlimit/setrlimit with RLIM_INFINITY broken on alpha
|
||
[22657] localedata: hu_HU: Avoid double space in date
|
||
[22660] math: fmax, fmin sNaN handling on alpha
|
||
[22664] libc: New warning of GCC8
|
||
[22665] math: alpha: ceil and floor raise inexact exceptions
|
||
[22666] math: alpha: trunc raise inexact exceptions
|
||
[22667] libc: makecontext lacks stack alignment on i386
|
||
[22678] libc: prlimit fails for RLIM_INFINITY values on 32-bit machines
|
||
[22679] libc: getcwd(3) can succeed without returning an absolute path
|
||
(CVE-2018-1000001)
|
||
[22685] libc: PowerPC: Static AT_SECURE binaries segfault with lock-
|
||
elision and tunables
|
||
[22687] math: [powerpc-nofpu] complex long double functions spurious
|
||
"invalid" exception
|
||
[22688] math: [powerpc-nofpu] remainderl wrong sign of zero result
|
||
[22690] math: [ldbl-128ibm] lrintl, lroundl missing "invalid" exceptions
|
||
[22691] math: [powerpc-nofpu] fmaxmagl, fminmagl spurious "invalid"
|
||
exception
|
||
[22693] math: [ldbl-128ibm] log1pl (-qNaN) spurious "invalid" exception
|
||
[22697] math: [powerpc] llround spurious "inexact" exceptions on 32-bit
|
||
power4
|
||
[22701] nis: Incomplete removal of libnsl
|
||
[22702] math: [powerpc-nofpu] nearbyintl traps with trapping "inexact"
|
||
[22707] libc: Missing defines in elf.h for DF_1_STUB and DF_1_PIE.
|
||
[22715] dynamic-link: FAIL: elf/tst-audit10
|
||
[22719] libc: Backtrace tests fail on hppa
|
||
[22742] libc: [aarch64] mcontext_t __reserved field got renamed
|
||
[22743] nptl: __pthread_register_cancel corrupts stack after f81ddabffd
|
||
[22765] crypt: (struct crypt_data *data)->initialized is not set to zero
|
||
before the first call to crypt_r () in crypt/badsalttest.c
|
||
|
||
|
||
Version 2.26
|
||
|
||
Major new features:
|
||
|
||
* A per-thread cache has been added to malloc. Access to the cache requires
|
||
no locks and therefore significantly accelerates the fast path to allocate
|
||
and free small amounts of memory. Refilling an empty cache requires locking
|
||
the underlying arena. Performance measurements show significant gains in a
|
||
wide variety of user workloads. Workloads were captured using a special
|
||
instrumented malloc and analyzed with a malloc simulator. Contributed by
|
||
DJ Delorie with the help of Florian Weimer, and Carlos O'Donell.
|
||
|
||
* Unicode 10.0.0 Support: Character encoding, character type info, and
|
||
transliteration tables are all updated to Unicode 10.0.0, using
|
||
generator scripts contributed by Mike FABIAN (Red Hat).
|
||
These updates cause user visible changes, especially the changes in
|
||
wcwidth for many emoji characters cause problems when emoji sequences
|
||
are rendered with pango, see for example:
|
||
https://bugzilla.gnome.org/show_bug.cgi?id=780669#c5
|
||
|
||
* Collation of Hungarian has been overhauled and is now consistent with "The
|
||
Rules of Hungarian Orthography, 12th edition" (Bug 18934). Contributed by
|
||
Egmont Koblinger.
|
||
|
||
* Improvements to the DNS stub resolver, contributed by Florian Weimer:
|
||
|
||
- The GNU C Library will now detect when /etc/resolv.conf has been
|
||
modified and reload the changed configuration. The new resolver option
|
||
“no-reload” (RES_NORELOAD) disables this behavior.
|
||
|
||
- The GNU C Library now supports an arbitrary number of search domains
|
||
(configured using the “search” directive in /etc/resolv.conf);
|
||
previously, there was a hard limit of six domains. For backward
|
||
compatibility, applications that directly modify the ‘_res’ global
|
||
object are still limited to six search domains.
|
||
|
||
- When the “rotate” (RES_ROTATE) resolver option is active, the GNU C
|
||
Library will now randomly pick a name server from the configuration as a
|
||
starting point. (Previously, the second name server was always used.)
|
||
|
||
* The tunables feature is now enabled by default. This allows users to tweak
|
||
behavior of the GNU C Library using the GLIBC_TUNABLES environment variable.
|
||
|
||
* New function reallocarray, which resizes an allocated block (like realloc)
|
||
to the product of two sizes, with a guaranteed clean failure upon integer
|
||
overflow in the multiplication. Originally from OpenBSD, contributed by
|
||
Dennis Wölfing and Rüdiger Sonderfeld.
|
||
|
||
* New wrappers for the Linux-specific system calls preadv2 and pwritev2.
|
||
These are extended versions of preadv and pwritev, respectively, taking an
|
||
additional flags argument. The set of supported flags depends on the
|
||
running kernel; full support currently requires kernel 4.7 or later.
|
||
|
||
* posix_spawnattr_setflags now supports the flag POSIX_SPAWN_SETSID, to
|
||
create a new session ID for the spawned process. This feature is
|
||
scheduled to be added to the next major revision of POSIX; for the time
|
||
being, it is available under _GNU_SOURCE.
|
||
|
||
* errno.h is now safe to use from C-preprocessed assembly language on all
|
||
supported operating systems. In this context, it will only define the
|
||
Exxxx constants, as preprocessor macros expanding to integer literals.
|
||
|
||
* On ia64, powerpc64le, x86-32, and x86-64, the math library now implements
|
||
128-bit floating point as defined by ISO/IEC/IEEE 60559:2011 (IEEE
|
||
754-2008) and ISO/IEC TS 18661-3:2015. Contributed by Paul E. Murphy,
|
||
Gabriel F. T. Gomes, Tulio Magno Quites Machado Filho, and Joseph Myers.
|
||
|
||
To compile programs that use this feature, the compiler must support
|
||
128-bit floating point with the type name _Float128 (as defined by TS
|
||
18661-3) or __float128 (the nonstandard name used by GCC for C++, and for
|
||
C prior to version 7). _GNU_SOURCE or __STDC_WANT_IEC_60559_TYPES_EXT__
|
||
must be defined to make the new interfaces visible.
|
||
|
||
The new functions and macros correspond to those present for other
|
||
floating-point types (except for a few obsolescent interfaces not
|
||
supported for the new type), with F128 or f128 suffixes; for example,
|
||
strtof128, HUGE_VAL_F128 and cosf128. Following TS 18661-3, there are no
|
||
printf or scanf formats for the new type; the strfromf128 and strtof128
|
||
interfaces should be used instead.
|
||
|
||
Deprecated and removed features, and other changes affecting compatibility:
|
||
|
||
* The synchronization that pthread_spin_unlock performs has been changed to
|
||
now be equivalent to a C11 atomic store with release memory order to the
|
||
spin lock's memory location. Previously, several (but not all)
|
||
architectures used stronger synchronization (e.g., containing what is
|
||
often called a full barrier). This change can improve performance, but
|
||
may affect odd fringe uses of spin locks that depend on the previous
|
||
behavior (e.g., using spin locks as atomic variables to try to implement
|
||
Dekker's mutual exclusion algorithm).
|
||
|
||
* The port to Native Client running on ARMv7-A (--host=arm-nacl) has been
|
||
removed.
|
||
|
||
* Sun RPC is deprecated. The rpcgen program, librpcsvc, and Sun RPC headers
|
||
will only be built and installed when the GNU C Library is configured with
|
||
--enable-obsolete-rpc. This allows alternative RPC implementations, such
|
||
as TIRPC or rpcsvc-proto, to be used.
|
||
|
||
* The NIS(+) name service modules, libnss_nis, libnss_nisplus, and
|
||
libnss_compat, are deprecated, and will not be built or installed by
|
||
default.
|
||
|
||
The NIS(+) support library, libnsl, is also deprecated. By default, a
|
||
compatibility shared library will be built and installed, but not headers
|
||
or development libraries. Only a few NIS-related programs require this
|
||
library. (In particular, the GNU C Library has never required programs
|
||
that use 'gethostbyname' to be linked with libnsl.)
|
||
|
||
Replacement implementations based on TIRPC, which additionally support
|
||
IPv6, are available from <https://github.com/thkukuk/>. The configure
|
||
option --enable-obsolete-nsl will cause libnsl's headers, and the NIS(+)
|
||
name service modules, to be built and installed.
|
||
|
||
* The DNS stub resolver no longer performs EDNS fallback. If EDNS or DNSSEC
|
||
support is enabled, the configured recursive resolver must support EDNS.
|
||
(Responding to EDNS-enabled queries with responses which are not
|
||
EDNS-enabled is fine, but FORMERR responses are not.)
|
||
|
||
* res_mkquery and res_nmkquery no longer support the IQUERY opcode. DNS
|
||
servers have not supported this opcode for a long time.
|
||
|
||
* The _res_opcodes variable has been removed from libresolv. It had been
|
||
exported by accident.
|
||
|
||
* <string.h> no longer includes inline versions of any string functions,
|
||
as this kind of optimization is better done by the compiler. The macros
|
||
__USE_STRING_INLINES and __NO_STRING_INLINES no longer have any effect.
|
||
|
||
* The nonstandard header <xlocale.h> has been removed. Most programs should
|
||
use <locale.h> instead. If you have a specific need for the definition of
|
||
locale_t with no other declarations, please contact
|
||
libc-alpha@sourceware.org and explain.
|
||
|
||
* The obsolete header <sys/ultrasound.h> has been removed.
|
||
|
||
* The obsolete signal constant SIGUNUSED is no longer defined by <signal.h>.
|
||
|
||
* The obsolete function cfree has been removed. Applications should use
|
||
free instead.
|
||
|
||
* The stack_t type no longer has the name struct sigaltstack. This changes
|
||
the C++ name mangling for interfaces involving this type.
|
||
|
||
* The ucontext_t type no longer has the name struct ucontext. This changes
|
||
the C++ name mangling for interfaces involving this type.
|
||
|
||
* On M68k GNU/Linux and MIPS GNU/Linux, the fpregset_t type no longer has
|
||
the name struct fpregset. On Nios II GNU/Linux, the mcontext_t type no
|
||
longer has the name struct mcontext. On SPARC GNU/Linux, the struct
|
||
mc_fq, struct rwindow, struct fpq and struct fq types are no longer
|
||
defined in sys/ucontext.h, the mc_fpu_t type no longer has the name struct
|
||
mc_fpu, the gwindows_t type no longer has the name struct gwindows and the
|
||
fpregset_t type no longer has the name struct fpu. This changes the C++
|
||
name mangling for interfaces involving those types.
|
||
|
||
* On S/390 GNU/Linux, the constants defined by <sys/ptrace.h> have been
|
||
synced with the kernel:
|
||
|
||
- PTRACE_GETREGS, PTRACE_SETREGS, PTRACE_GETFPREGS and PTRACE_SETFPREGS
|
||
are not supported on this architecture and have been removed.
|
||
|
||
- PTRACE_SINGLEBLOCK, PTRACE_SECCOMP_GET_FILTER, PTRACE_PEEKUSR_AREA,
|
||
PTRACE_POKEUSR_AREA, PTRACE_GET_LAST_BREAK, PTRACE_ENABLE_TE,
|
||
PTRACE_DISABLE_TE and PTRACE_TE_ABORT_RAND have been added.
|
||
|
||
Programs that assume the GET/SETREGS ptrace requests are universally
|
||
available will now fail to build, instead of malfunctioning at runtime.
|
||
|
||
Changes to build and runtime requirements:
|
||
|
||
* Linux kernel 3.2 or later is required at runtime, on all architectures
|
||
supported by that kernel. (This is a change from version 2.25 only for
|
||
x86-32 and x86-64.)
|
||
|
||
* GNU Binutils 2.25 or later is now required to build the GNU C Library.
|
||
|
||
* On most architectures, GCC 4.9 or later is required to build the GNU C
|
||
Library. On powerpc64le, GCC 6.2 or later is required.
|
||
|
||
Older GCC versions and non-GNU compilers are still supported when
|
||
compiling programs that use the GNU C Library. (We do not know exactly
|
||
how old, and some GNU extensions to C may be _de facto_ required. If you
|
||
are interested in helping us make this statement less vague, please
|
||
contact libc-alpha@sourceware.org.)
|
||
|
||
Security related changes:
|
||
|
||
* The DNS stub resolver limits the advertised UDP buffer size to 1200 bytes,
|
||
to avoid fragmentation-based spoofing attacks (CVE-2017-12132).
|
||
|
||
* LD_LIBRARY_PATH is now ignored in binaries running in privileged AT_SECURE
|
||
mode to guard against local privilege escalation attacks (CVE-2017-1000366).
|
||
|
||
* Avoid printing a backtrace from the __stack_chk_fail function since it is
|
||
called on a corrupt stack and a backtrace is unreliable on a corrupt stack
|
||
(CVE-2010-3192).
|
||
|
||
* A use-after-free vulnerability in clntudp_call in the Sun RPC system has been
|
||
fixed (CVE-2017-12133).
|
||
|
||
The following bugs are resolved with this release:
|
||
|
||
[984] network: Respond to changed resolv.conf in gethostbyname
|
||
[5010] network: sunrpc service cleanup causes unwanted port mapper traffic
|
||
[12068] localedata: sc_IT: misspelled yesexpr/day/abday/mon/abmon/date_fmt
|
||
fields
|
||
[12189] libc: __stack_chk_fail should not attempt a backtrace
|
||
(CVE-2010-3192)
|
||
[14096] time: Race condition on timezone/tst-timezone.out
|
||
[14172] localedata: az_IR: new locale
|
||
[14995] build: glibc fails to build if gold is the default linker, even if
|
||
ld.bfd is available
|
||
[15998] build: [powerpc] Set arch_minimum_kernel for powerpc LE
|
||
[16637] network: inet_pton function is accepting IPv6 with bad format
|
||
[16640] string: string/strtok.c: undefined behaviour inconsistent between
|
||
x86 and other generic code
|
||
[16875] localedata: ko_KR: fix lang_name
|
||
[17225] localedata: ar_SY: localized month names for May and June are
|
||
incorrect
|
||
[17297] localedata: da_DK: wrong date_fmt string
|
||
[18907] stdio: Incorrect order of __wur __THROW in <printf.h>
|
||
[18934] localedata: hu_HU: collate: fix multiple bugs and add tests
|
||
[18988] nptl: pthread wastes memory with mlockall(MCL_FUTURE)
|
||
[19066] localedata: ar_SA abbreviated day and month names are in English
|
||
[19569] network: resolv: Support an arbitrary number of search domains
|
||
[19570] network: Implement random DNS server selection in the stub
|
||
resolver
|
||
[19838] locale: localedef fails on PA-RISC
|
||
[19919] localedata: iso14651_t1_common: Correct the Malayalam sorting
|
||
order of 0D36 and 0D37
|
||
[19922] localedata: iso14651_t1_common: Define collation for Malayalam
|
||
chillu characters
|
||
[20098] libc: FAIL: debug/backtrace-tst on hppa
|
||
[20257] network: sunrpc: clntudp_call does not enforce timeout when
|
||
receiving data
|
||
[20275] localedata: locale day/abday/mon/abmon should not have trailing
|
||
whitespace
|
||
[20313] localedata: Update locale data to Unicode 9.0
|
||
[20424] manual: Document how to provide a malloc replacement
|
||
[20496] localedata: agr_PE: new language locale Awajún / Aguaruna (agr)
|
||
for Peru
|
||
[20686] locale: Add el_GR@euro to SUPPORTED.
|
||
[20831] dynamic-link: _dl_map_segments does not test for __mprotect
|
||
failures consistently
|
||
[21015] dynamic-link: Document and fix --enable-bind-now
|
||
[21016] nptl: pthread_cond support is broken on hppa
|
||
[21029] libc: glibc-2.23 (and later) fails to compile with -fno-omit-
|
||
frame-pointer on i386
|
||
[21049] libc: segfault in longjmp_chk() due to clobbered processor
|
||
register
|
||
[21075] libc: unused assignment to %g4 in sparc/sparc{64,32}/clone.S
|
||
[21088] libc: Build fails with --enable-static-nss
|
||
[21094] math: cosf(1.57079697) has 3 ulp error on targets where the
|
||
generic c code is used
|
||
[21109] libc: Tunables broken on big-endian
|
||
[21112] math: powf has large ulp errors with base close to 1 and exponent
|
||
around 4000
|
||
[21115] network: sunrpc: Use-after-free in error path in clntudp_call
|
||
(CVE-2017-12133)
|
||
[21120] malloc: glibc malloc is incompatible with GCC 7
|
||
[21130] math: Incorrect return from y0l (-inf) and y1l (-inf) when linking
|
||
with -lieee
|
||
[21134] math: Exception (divide by zero) not set for y0/y1 (0.0) and y0/y1
|
||
(-0.0) when linking with -lieee
|
||
[21171] math: log10, log2 and lgamma return incorrect results
|
||
[21179] libc: handle R_SPARC_DISP64 and R_SPARC_REGISTER relocs
|
||
[21182] libc: __memchr_sse2: regression in glibc-2.25 on i686
|
||
[21207] localedata: ce_RU: update weekdays from CLDR
|
||
[21209] dynamic-link: LD_HWCAP_MASK read in setuid binaries
|
||
[21217] localedata: Update months from CLDR-31
|
||
[21232] libc: miss posix_fadvise64 on MIPS64 when static linking
|
||
[21243] libc: support_delete_temp_file should issue warning for failed
|
||
remove()
|
||
[21244] libc: support resolv_test_start() socket fd close should be
|
||
checked for errors.
|
||
[21253] libc: localedef randomly segfaults when using -fstack-check due to
|
||
new posix_spawn implementation
|
||
[21258] dynamic-link: Branch predication in _dl_runtime_resolve_avx512_opt
|
||
leads to lower CPU frequency
|
||
[21259] libc: [alpha] termios.h missing IXANY for POSIX
|
||
[21261] libc: [sparc64] bits/setjmp.h namespace
|
||
[21267] network: [mips] bits/socket.h IOC* namespace
|
||
[21268] libc: [alpha] termios.h NL2, NL3 namespace
|
||
[21270] libc: mmap64 silently truncates large offset values
|
||
[21275] libc: posix_spawn always crashes on ia64 now
|
||
[21277] libc: [alpha] termios.h missing IUCLC for UNIX98 and older
|
||
[21280] math: [powerpc] logbl for POWER7 return incorrect results
|
||
[21289] libc: Incorrect declaration for 32-bit platforms with
|
||
_FILE_OFFSET_BITS=64 causes build error
|
||
[21295] network: GETAI(AF_UNSPEC) drops IPv6 addresses if nss module does
|
||
not support gethostbyname4_r
|
||
[21298] nptl: rwlock can deadlock on frequent reader/writer phase
|
||
switching
|
||
[21338] malloc: mallopt M_ARENA_MAX doesn't set the maximum number of
|
||
arenas
|
||
[21340] libc: Support POSIX_SPAWN_SETSID
|
||
[21357] libc: unwind-dw2-fde deadlock when using AddressSanitizer
|
||
[21359] network: ns_name_pack needs additional byte in destination buffer
|
||
[21361] network: resolv: Reduce advertised EDNS0 buffer size to guard
|
||
against fragmentation attacks (CVE-2017-12132)
|
||
[21369] network: resolv: Remove EDNS fallback
|
||
[21371] libc: Missing timespec definition when compiled with _XOPEN_SOURCE
|
||
and _POSIX_C_SOURCE
|
||
[21386] nptl: Assertion in fork for distinct parent PID is incorrect
|
||
[21391] dynamic-link: x86: Set dl_platform and dl_hwcap from CPU features
|
||
[21393] stdio: Missing dup3 error check in freopen, freopen64
|
||
[21396] libc: Use AVX2 memcpy/memset on Skylake server
|
||
[21399] localedata: Bad description for U00EC in
|
||
localedata/charmaps/CP1254
|
||
[21411] malloc: realloc documentation error
|
||
[21426] network: sys/socket.h uio.h namespace
|
||
[21428] libc: [aarch64] tst-backtrace5 testsuite failure
|
||
[21445] libc: signal.h bsd_signal namespace
|
||
[21455] network: Network headers stdint.h namespace
|
||
[21474] network: resolv: res_init does not use RES_DFLRETRY (2) but 4 for
|
||
retry value
|
||
[21475] network: resolv: Overlong search path is truncated mid-label
|
||
[21511] libc: sigstack namespace
|
||
[21512] libc: clone() ends up calling exit_group() through _exit() wrapper
|
||
[21514] libc: sysdeps/unix/sysv/linux/sys/syscall.h:31:27: fatal error:
|
||
bits/syscall.h: No such file or directory
|
||
[21517] libc: struct sigaltstack namespace
|
||
[21528] dynamic-link: Duplicated minimal strtoul implementations in ld.so
|
||
[21533] localedata: Update locale data to Unicode 10.0
|
||
[21537] libc:
|
||
../sysdeps/unix/sysv/linux/s390/s390-32/__makecontext_ret.S:44: Error:
|
||
junk at end of line, first unrecognized character is `@'
|
||
[21538] libc: SIG_HOLD missing for XPG4
|
||
[21539] libc: S390: Mismatch between kernel and glibc ptrace.h with
|
||
request 12: PTRACE_SINGLEBLOCK vs PTRACE_GETREGS.
|
||
[21542] libc: Use conservative default for sysconf (_SC_NPROCESSORS_ONLN)
|
||
[21543] libc: sigevent namespace
|
||
[21548] libc: [mips] get/set/make/swap context for MIPS O32 assume wrong
|
||
size for general purpose registers in mcontext_t structure
|
||
[21550] libc: sigwait namespace
|
||
[21552] libc: XPG4 bsd_signal namespace
|
||
[21554] libc: sigpause namespace
|
||
[21560] libc: sys/wait.h signal.h namespace
|
||
[21561] libc: waitid namespace
|
||
[21573] nptl: GCC 7: /usr/bin/install: cannot remove
|
||
'/usr/include/stdlib.h': Permission denied
|
||
[21575] libc: sys/wait.h missing struct rusage definition
|
||
[21584] libc: sigaltstack etc namespace
|
||
[21597] libc: siginterrupt namespace
|
||
[21607] math: hppa: FAIL: math/test-tgmath
|
||
[21609] dynamic-link: Incomplete workaround for GCC __tls_get_addr ABI
|
||
issue on x86-64
|
||
[21622] libc: [tile] missing SA_* for POSIX.1:2008
|
||
[21624] dynamic-link: ld.so: Unsafe alloca allows local attackers to alias
|
||
stack and heap (CVE-2017-1000366)
|
||
[21625] libc: wait3 namespace
|
||
[21654] nss: Incorrect pointer alignment in NSS group merge result
|
||
construction
|
||
[21657] network: Parse interface zone id for node-local multicast
|
||
[21662] string: memcmp-avx2-movbe.S lacks saturating subtraction for
|
||
between_2_3
|
||
[21666] libc: .symver is used on common symbol
|
||
[21668] network: resolv: res_init cross-thread broadcast introduces race
|
||
conditions
|
||
[21687] math: tgmath.h totalorder, totalordermag return type
|
||
[21694] locale: Current Glibc Locale Does Not Support Tok-Pisin and Fiji
|
||
Hindi Locale
|
||
[21696] libc: Incorrect assumption of of __cpu_mask in
|
||
posix/sched_cpucount.c
|
||
[21697] libc: sysdeps/posix/spawni.c: 2 * suspicious condition ?
|
||
[21706] localedata: yesstr and nostr are missing for Breton [LC_MESSAGES]
|
||
locale
|
||
[21707] math: ppc64le: Invalid IFUNC resolver from libgcc calls getauxval,
|
||
leading to relocation crash
|
||
[21709] libc: resolv_conf.c:552: update_from_conf: Assertion
|
||
`resolv_conf_matches (resp, conf)' failed.
|
||
[21710] localedata: Added Samoan language locale for Samoa
|
||
[21711] localedata: Pashto yesstr/nostr locale are missing
|
||
[21715] nptl: sysdeps/nptl/bits/pthreadtypes.h: typedef guard
|
||
__have_pthread_attr_t can cause redefinition of typedef ‘pthread_attr_t’
|
||
[21721] localedata: Incorrect Full Weekday names for ks_IN@devanagari
|
||
[21723] localedata: yesstr/nostr missing for Chinese language locale
|
||
[21724] localedata: yesstr and nostr are missing for Xhosa [LC_MESSAGES]
|
||
locale
|
||
[21727] localedata: yesstr and nostr are missing for Tsonga [LC_MESSAGES]
|
||
locale
|
||
[21728] localedata: New Locale for Tongan language
|
||
[21729] localedata: incorrect LC_NAME fields for hi_IN
|
||
[21733] localedata: yesstr and nostr are missing for zh_HK
|
||
[21734] localedata: Missing yesstr and nostr are for kw_GB
|
||
[21738] libc: misc/tst-preadvwritev2 and misc/tst-preadvwritev64v2 fail
|
||
[21741] libc: Undefined __memmove_chk_XXX and __memset_chk_XXX in libc.a
|
||
[21742] libc: _dl_num_cache_relocations is undefined in libc.a
|
||
[21743] localedata: ks_IN@devanagari: abday strings mismatch the day
|
||
strings
|
||
[21744] libc: Tests failing on --enable-tunables --enable-stack-
|
||
protector=all
|
||
[21749] localedata: Wrong abbreviated day name (“abday”) for
|
||
ar_JO/ar_LB/ar_SY
|
||
[21756] localedata: missing yesstr, nostr for nds_DE and nds_NL
|
||
[21757] localedata: missing yesstr, nostr for pap_AW and pap_CW
|
||
[21759] localedata: missing yesstr and nostr for Tigrinya
|
||
[21760] localedata: Fix LC_MESSAGES and LC_ADDRESS for anp_IN
|
||
[21766] localedata: Wrong LC_MESSAGES for om_ET Locale
|
||
[21767] localedata: Missing Bislama locales
|
||
[21768] localedata: Missing yesstr and nostr for aa_ET
|
||
[21770] localedata: Missing Field in li_NL
|
||
[21778] nptl: Robust mutex may deadlock
|
||
[21779] libc: MicroBlaze segfaults when loading libpthread
|
||
[21783] localedata: Fix int_select international_call_prefixes
|
||
[21784] localedata: Inconsistency in country_isbn
|
||
[21788] localedata: Missing Country Postal Abbreviations
|
||
[21794] localedata: Added-country_isbn-for-Italy
|
||
[21795] localedata: Add/Fix country_isbn for France
|
||
[21796] localedata: Added country_isbn for Republic of Korea
|
||
[21797] localedata: Fix inconsistency in country_isbn and missing prefixes
|
||
[21799] localedata: Added int_select international_call_prefixes
|
||
[21801] localedata: Added int_select international_call_prefixes
|
||
[21804] nptl: Double semicolon in thread-shared-types.h
|
||
[21807] localedata: LC_ADDRESS fix for pap_CW
|
||
[21808] localedata: Fix LC_ADDRESS for pap_AW
|
||
[21821] localedata: Added country_name in mai_IN
|
||
[21822] localedata: Fix LC_TIME for mai_IN
|
||
[21823] localedata: missing yesstr, nostr for sa_IN
|
||
[21825] localedata: Fix name_mrs for mag_IN
|
||
[21828] localedata: 2.26 changelog should mention user visible changes
|
||
with unicode 9.0
|
||
[21835] localedata: Added Maithili language locale for Nepal
|
||
[21838] localedata: Removed redundant data for the_NP
|
||
[21839] localedata: Fix LC_MONETARY for ta_LK
|
||
[21844] localedata: Fix Latin characters and Months Sequence.
|
||
[21848] localedata: Fix mai_NP Title Name
|
||
|
||
|
||
Version 2.25
|
||
|
||
* The feature test macro __STDC_WANT_LIB_EXT2__, from ISO/IEC TR
|
||
24731-2:2010, is supported to enable declarations of functions from that
|
||
TR. Note that not all functions from that TR are supported by the GNU C
|
||
Library.
|
||
|
||
* The feature test macro __STDC_WANT_IEC_60559_BFP_EXT__, from ISO/IEC TS
|
||
18661-1:2014, is supported to enable declarations of functions and macros
|
||
from that TS. Note that not all features from that TS are supported by
|
||
the GNU C Library.
|
||
|
||
* The feature test macro __STDC_WANT_IEC_60559_FUNCS_EXT__, from ISO/IEC TS
|
||
18661-4:2015, is supported to enable declarations of functions and macros
|
||
from that TS. Note that most features from that TS are not supported by
|
||
the GNU C Library.
|
||
|
||
* The nonstandard feature selection macros _REENTRANT and _THREAD_SAFE are
|
||
now treated as compatibility synonyms for _POSIX_C_SOURCE=199506L.
|
||
Since the GNU C Library defaults to a much newer revision of POSIX, this
|
||
will only affect programs that specifically request an old conformance
|
||
mode. For instance, a program compiled with -std=c89 -D_REENTRANT will
|
||
see a change in the visible declarations, but a program compiled with
|
||
just -D_REENTRANT, or -std=c99 -D_POSIX_C_SOURCE=200809L -D_REENTRANT,
|
||
will not.
|
||
|
||
Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
|
||
defined by all multithreaded code, but glibc has not required this for
|
||
many years.
|
||
|
||
* The inclusion of <sys/sysmacros.h> by <sys/types.h> is deprecated. This
|
||
means that in a future release, the macros “major”, “minor”, and “makedev”
|
||
will only be available from <sys/sysmacros.h>.
|
||
|
||
These macros are not part of POSIX nor XSI, and their names frequently
|
||
collide with user code; see for instance glibc bug 19239 and Red Hat bug
|
||
130601. <stdlib.h> includes <sys/types.h> under _GNU_SOURCE, and C++ code
|
||
presently cannot avoid being compiled under _GNU_SOURCE, exacerbating the
|
||
problem.
|
||
|
||
* New <fenv.h> features from TS 18661-1:2014 are added to libm: the
|
||
fesetexcept, fetestexceptflag, fegetmode and fesetmode functions, the
|
||
femode_t type and the FE_DFL_MODE and FE_SNANS_ALWAYS_SIGNAL macros.
|
||
|
||
* Integer width macros from TS 18661-1:2014 are added to <limits.h>:
|
||
CHAR_WIDTH, SCHAR_WIDTH, UCHAR_WIDTH, SHRT_WIDTH, USHRT_WIDTH, INT_WIDTH,
|
||
UINT_WIDTH, LONG_WIDTH, ULONG_WIDTH, LLONG_WIDTH, ULLONG_WIDTH; and to
|
||
<stdint.h>: INT8_WIDTH, UINT8_WIDTH, INT16_WIDTH, UINT16_WIDTH,
|
||
INT32_WIDTH, UINT32_WIDTH, INT64_WIDTH, UINT64_WIDTH, INT_LEAST8_WIDTH,
|
||
UINT_LEAST8_WIDTH, INT_LEAST16_WIDTH, UINT_LEAST16_WIDTH,
|
||
INT_LEAST32_WIDTH, UINT_LEAST32_WIDTH, INT_LEAST64_WIDTH,
|
||
UINT_LEAST64_WIDTH, INT_FAST8_WIDTH, UINT_FAST8_WIDTH, INT_FAST16_WIDTH,
|
||
UINT_FAST16_WIDTH, INT_FAST32_WIDTH, UINT_FAST32_WIDTH, INT_FAST64_WIDTH,
|
||
UINT_FAST64_WIDTH, INTPTR_WIDTH, UINTPTR_WIDTH, INTMAX_WIDTH,
|
||
UINTMAX_WIDTH, PTRDIFF_WIDTH, SIG_ATOMIC_WIDTH, SIZE_WIDTH, WCHAR_WIDTH,
|
||
WINT_WIDTH.
|
||
|
||
* New <math.h> features are added from TS 18661-1:2014:
|
||
|
||
- Signaling NaN macros: SNANF, SNAN, SNANL.
|
||
|
||
- Nearest integer functions: roundeven, roundevenf, roundevenl, fromfp,
|
||
fromfpf, fromfpl, ufromfp, ufromfpf, ufromfpl, fromfpx, fromfpxf,
|
||
fromfpxl, ufromfpx, ufromfpxf, ufromfpxl.
|
||
|
||
- llogb functions: the llogb, llogbf and llogbl functions, and the
|
||
FP_LLOGB0 and FP_LLOGBNAN macros.
|
||
|
||
- Max-min magnitude functions: fmaxmag, fmaxmagf, fmaxmagl, fminmag,
|
||
fminmagf, fminmagl.
|
||
|
||
- Comparison macros: iseqsig.
|
||
|
||
- Classification macros: iscanonical, issubnormal, iszero.
|
||
|
||
- Total order functions: totalorder, totalorderf, totalorderl,
|
||
totalordermag, totalordermagf, totalordermagl.
|
||
|
||
- Canonicalize functions: canonicalize, canonicalizef, canonicalizel.
|
||
|
||
- NaN functions: getpayload, getpayloadf, getpayloadl, setpayload,
|
||
setpayloadf, setpayloadl, setpayloadsig, setpayloadsigf, setpayloadsigl.
|
||
|
||
* The functions strfromd, strfromf, and strfroml, from ISO/IEC TS 18661-1:2014,
|
||
are added to libc. They convert a floating-point number into string.
|
||
|
||
* Most of glibc can now be built with the stack smashing protector enabled.
|
||
It is recommended to build glibc with --enable-stack-protector=strong.
|
||
Implemented by Nick Alcock (Oracle).
|
||
|
||
* The function explicit_bzero, from OpenBSD, has been added to libc. It is
|
||
intended to be used instead of memset() to erase sensitive data after use;
|
||
the compiler will not optimize out calls to explicit_bzero even if they
|
||
are "unnecessary" (in the sense that no _correct_ program can observe the
|
||
effects of the memory clear).
|
||
|
||
* On ColdFire, MicroBlaze, Nios II and SH3, the float_t type is now defined
|
||
to float instead of double. This does not affect the ABI of any libraries
|
||
that are part of the GNU C Library, but may affect the ABI of other
|
||
libraries that use this type in their interfaces.
|
||
|
||
* On x86_64, when compiling with -mfpmath=387 or -mfpmath=sse+387, the
|
||
float_t and double_t types are now defined to long double instead of float
|
||
and double. These options are not the default, and this does not affect
|
||
the ABI of any libraries that are part of the GNU C Library, but it may
|
||
affect the ABI of other libraries that use this type in their interfaces,
|
||
if they are compiled or used with those options.
|
||
|
||
* The getentropy and getrandom functions, and the <sys/random.h> header file
|
||
have been added.
|
||
|
||
* The buffer size for byte-oriented stdio streams is now limited to 8192
|
||
bytes by default. Previously, on Linux, the default buffer size on most
|
||
file systems was 4096 bytes (and thus remains unchanged), except on
|
||
network file systems, where the buffer size was unpredictable and could be
|
||
as large as several megabytes.
|
||
|
||
* The <sys/quota.h> header now includes the <linux/quota.h> header. Support
|
||
for the Linux quota interface which predates kernel version 2.4.22 has
|
||
been removed.
|
||
|
||
* The malloc_get_state and malloc_set_state functions have been removed.
|
||
Already-existing binaries that dynamically link to these functions will
|
||
get a hidden implementation in which malloc_get_state is a stub. As far
|
||
as we know, these functions are used only by GNU Emacs and this change
|
||
will not adversely affect already-built Emacs executables. Any undumped
|
||
Emacs executables, which normally exist only during an Emacs build, should
|
||
be rebuilt by re-running “./configure; make” in the Emacs build tree.
|
||
|
||
* The “ip6-dotint” and “no-ip6-dotint” resolver options, and the
|
||
corresponding RES_NOIP6DOTINT flag from <resolv.h> have been removed.
|
||
“no-ip6-dotint” had already been the default, and support for the
|
||
“ip6-dotint” option was removed from the Internet in 2006.
|
||
|
||
* The "ip6-bytestring" resolver option and the corresponding RES_USEBSTRING
|
||
flag from <resolv.h> have been removed. The option relied on a
|
||
backwards-incompatible DNS extension which was never deployed on the
|
||
Internet.
|
||
|
||
* The flags RES_AAONLY, RES_PRIMARY, RES_NOCHECKNAME, RES_KEEPTSIG,
|
||
RES_BLAST defined in the <resolv.h> header file have been deprecated.
|
||
They were already unimplemented.
|
||
|
||
* The "inet6" option in /etc/resolv.conf and the RES_USE_INET6 flag for
|
||
_res.flags are deprecated. The flag was standardized in RFC 2133, but
|
||
removed again from the IETF name lookup interface specification in RFC
|
||
2553. Applications should use getaddrinfo instead.
|
||
|
||
* DNSSEC-related declarations and definitions have been removed from the
|
||
<arpa/nameser.h> header file, and libresolv will no longer attempt to
|
||
decode the data part of DNSSEC record types. Previous versions of glibc
|
||
only implemented minimal support for the previous version of DNSSEC, which
|
||
is incompatible with the currently deployed version.
|
||
|
||
* The resource record type classification macros ns_t_qt_p, ns_t_mrr_p,
|
||
ns_t_rr_p, ns_t_udp_p, ns_t_xfr_p have been removed from the
|
||
<arpa/nameser.h> header file because the distinction between RR types and
|
||
meta-RR types is not officially standardized, subject to revision, and
|
||
thus not suitable for encoding in a macro.
|
||
|
||
* The types res_sendhookact, res_send_qhook, re_send_rhook, and the qhook
|
||
and rhook members of the res_state type in <resolv.h> have been removed.
|
||
The glibc stub resolver did not support these hooks, but the header file
|
||
did not reflect that.
|
||
|
||
* For multi-arch support it is recommended to use a GCC which has
|
||
been built with support for GNU indirect functions. This ensures
|
||
that correct debugging information is generated for functions
|
||
selected by IFUNC resolvers. This support can either be enabled by
|
||
configuring GCC with '--enable-gnu-indirect-function', or by
|
||
enabling it by default by setting 'default_gnu_indirect_function'
|
||
variable for a particular architecture in the GCC source file
|
||
'gcc/config.gcc'.
|
||
|
||
* GDB pretty printers have been added for mutex and condition variable
|
||
structures in POSIX Threads. When installed and loaded in gdb these pretty
|
||
printers show various pthread variables in human-readable form when read
|
||
using the 'print' or 'display' commands in gdb.
|
||
|
||
* Tunables feature added to allow tweaking of the runtime for an application
|
||
program. This feature can be enabled with the '--enable-tunables' configure
|
||
flag. The GNU C Library manual has details on usage and README.tunables has
|
||
instructions on adding new tunables to the library.
|
||
|
||
* A new version of condition variables functions have been implemented in
|
||
the NPTL implementation of POSIX Threads to provide stronger ordering
|
||
guarantees.
|
||
|
||
* A new version of pthread_rwlock functions have been implemented to use a more
|
||
scalable algorithm primarily through not using a critical section anymore to
|
||
make state changes.
|
||
|
||
Security related changes:
|
||
|
||
* On ARM EABI (32-bit), generating a backtrace for execution contexts which
|
||
have been created with makecontext could fail to terminate due to a
|
||
missing .cantunwind annotation. This has been observed to lead to a hang
|
||
(denial of service) in some Go applications compiled with gccgo. Reported
|
||
by Andreas Schwab. (CVE-2016-6323)
|
||
|
||
* The DNS stub resolver functions would crash due to a NULL pointer
|
||
dereference when processing a query with a valid DNS question type which
|
||
was used internally in the implementation. The stub resolver now uses a
|
||
question type which is outside the range of valid question type values.
|
||
(CVE-2015-5180)
|
||
|
||
The following bugs are resolved with this release:
|
||
|
||
[4099] stdio: Overly aggressive caching by stream i/o functions.
|
||
[7065] build: Support building glibc with -fstack-protector or -fstack-
|
||
protector-all
|
||
[9842] localedata: en_CA: incorrect date format
|
||
[13165] nptl: pthread_cond_wait() can consume a signal that was sent
|
||
before it started waiting
|
||
[14139] manual: Do not hardcode platform names in manual/libm-err-tab.pl
|
||
[15765] nptl: sem_open is wrongly a cancellation point
|
||
[16421] network: IN6_IS_ADDR_UNSPECIFIED can use undefined s6_addr32
|
||
[16458] libc: endian.h and netinet/in.h byte order macros return values of
|
||
wrong type
|
||
[16628] dynamic-link: Segfault after a binary without pthread dlopen()s a
|
||
library linked with pthread
|
||
[16630] nptl: Use SYSENTER for pthread_cond_broadcast/signal() (i.e. fix
|
||
"FIXME: Ingo" issue)
|
||
[16907] libc: <argp.h> compiled with --std=cXX disables __attribute__
|
||
[17252] libc: getrandom and getentropy syscall
|
||
[17730] malloc: thread-local storage is sometimes improperly free()'d
|
||
after being __libc_memalign()'d
|
||
[18241] stdio: failed fseek on memstream does not set errno and can fail
|
||
when it shouldn't
|
||
[18243] nptl: sem_wait, sem_timedwait are cancellation points shm_open is
|
||
not
|
||
[18463] nptl: pthread_cond_broadcast issue when surrounded by
|
||
PTHREAD_PRIO_INHERIT mutex on ARM
|
||
[18784] network: res_query and related function crash for special record
|
||
type queries (CVE-2015-5180)
|
||
[19380] math: strtod does not raise "inexact"
|
||
[19387] string: Integer overflow in memchr
|
||
[19390] string: Integer overflow in strncat
|
||
[19398] build: linknamespace tests fail with massively parallel build
|
||
[19402] nptl: Deadlock with robust shared mutex and asynchronous
|
||
termination
|
||
[19469] malloc: M_PERTURB in test-skeleton.c invalidates malloc tests
|
||
[19473] malloc: Turn malloc_get_state etc. in compatibility symbols
|
||
[19514] libc: [PATCH] Fix spelling errors in spelling
|
||
"implement"/"implementation" in several places
|
||
[19582] network: Deprecate RES_USE_INET6
|
||
[19673] manual: clog10 docs appear to be erroneous
|
||
[19810] dynamic-link: dlopen with both RTLD_NOLOAD and RTLD_NODELETE
|
||
causes a segmentation fault
|
||
[19826] libc: invalid pointer returned from __tls_get_addr with static
|
||
linking
|
||
[20016] network: resolv: Remove hooks support from the API
|
||
[20019] dynamic-link: NULL pointer dereference in libc.so.6 IFUNC due to
|
||
uninitialized GOT
|
||
[20033] math: [x86_64] vectorized math function don't call the __finite
|
||
versions
|
||
[20116] nptl: use after free in pthread_create
|
||
[20181] stdio: open_memstream(): writes not at end of stream corrupt data
|
||
[20292] dynamic-link: Comparison in elf/dl-open.c _dl_addr_inside_object
|
||
is always true.
|
||
[20311] nptl: please install proc_service.h
|
||
[20366] libc: Compilation errors in installed headers in strict-compliance
|
||
modes
|
||
[20370] malloc: malloc: Arena free list management is still racy
|
||
(incorrect fix in bug 19243)
|
||
[20386] libc: assert (X = 0) does not result in GCC warning
|
||
[20432] malloc: malloc: Minimize interface required for interposition
|
||
[20435] libc: Missing unwind info in __startcontext causes infinite loop
|
||
in _Unwind_Backtrace (CVE-2016-6323)
|
||
[20444] hurd: recvmsg: PF_LOCAL sockets and msg_name lead to SIGLOST
|
||
[20452] nptl: Addition of sysdep.o to libpthread.a breaks relinking
|
||
libpthread.a
|
||
[20455] math: [powerpc] fesetexceptflag fails to clear FE_INVALID
|
||
[20459] localedata: et_EE: locale has wrong {p,n}_cs_precedes value
|
||
[20477] network: resolv: incorrect double-checked locking related to
|
||
_res_hconf
|
||
[20478] libc: libc_ifunc macro and similar usages leads to false debug-
|
||
information.
|
||
[20495] math: x86_64 performance degradation due to AVX/SSE transition
|
||
penalty
|
||
[20497] localedata: lt_LT: LC_TIME d_fmt used is obsolete
|
||
[20508] dynamic-link: _dl_runtime_resolve_avx/_dl_runtime_profile_avx512
|
||
cause transition penalty
|
||
[20517] math: sparcv9 missing fdiml compat symbol
|
||
[20524] manual: strverscmp is inconsistent
|
||
[20525] libc: <sys/quota.h> should be based on kernel headers
|
||
[20539] math: GCC 7 -static -lm fails to link at -O3
|
||
[20554] libc: ld: bss-plt forced due to /usr/lib/libc_nonshared.a(ppc-
|
||
mcount.oS)
|
||
[20558] string: POSIX bcopy/bzero decls do not implement Object Size
|
||
Checking
|
||
[20591] network: Remove obsolete DNSSEC support
|
||
[20592] network: DNS resource record type classification macros in
|
||
<arpa/nameser.h> are incorrect
|
||
[20593] network: Update DNS RR type definitions
|
||
[20611] network: getaddrinfo accepts invalid numeric scope IDs
|
||
[20615] build: glibc build fails when using --with-cpu=power9 --enable-
|
||
multi-arch
|
||
[20629] network: libresolv: Remove support for bitstring labels
|
||
(RES_USEBSTRING)
|
||
[20647] libc: GLIBC quitting every program - glibc on Pentium-S leads to
|
||
assertion: "maxidx >= 2"
|
||
[20660] math: [arm] Use VSQRT
|
||
[20662] libc: checking whether x86_64-pc-linux-gnu-gcc implicitly enables
|
||
-fstack-protector no (32bit gcc 6.2.0 pie and ssp enable)
|
||
[20689] libc: Test for FMA should also check for AVX.
|
||
[20707] glob: gl_pathv entries not set to NULL with GLOB_DOOFFS
|
||
[20715] math: iszero macro breaks existing code
|
||
[20718] math: [powerpc] copysignl raises "invalid" for sNaN
|
||
[20728] libc: powerpc: Missing TOC stub in clone
|
||
[20729] build: glibc-2.24 fails to build for i486 with -Os
|
||
[20750] build: Build fails with default PIE enabled gcc-6.x
|
||
[20768] math: [alpha] sqrt fegetenv namespace
|
||
[20785] libc: binutils 2.28 fails to assemble power6/memset.S file in
|
||
glibc
|
||
[20787] math: float_t is defined as float incorrectly on x86_64 even if
|
||
__FLT_EVAL_METHOD__ is 2
|
||
[20790] network: rpcgen buffer overrun in get_prog_declaration
|
||
[20822] nptl: race condition in __lll_unlock_elision on powerpc
|
||
[20829] libc: crypt snprintf namespace
|
||
[20847] libc: tst-vfork3 failure
|
||
[20855] math: Default bits/mathdef.h has inappropriate float_t
|
||
[20859] math: [sh4] FP_ILOGB0 invalid
|
||
[20864] localedata: iconv: cp936 missing single-byte euro sign (0x80,
|
||
U+20AC), not same as GBK
|
||
[20915] dynamic-link: global-dynamic TLS broken on aarch64
|
||
[20916] math: pow handling of sNaN arguments
|
||
[20918] build: Building with --enable-nss-crypt fails tst-linkall-static.
|
||
[20919] math: Bad pow (qNaN, 0) result with -lieee
|
||
[20940] math: hypot sNaN handling
|
||
[20947] math: fmax, fmin sNaN handling
|
||
[20956] libc: debug/tst-backtrace3-6 don't work with -O3 anymore
|
||
[20964] network: sunrpc: Stack-based buffer overflow in getrpcport with
|
||
RES_USE_INET6
|
||
[20971] string: powerpc64/power7 memchr overflows internal pointer check
|
||
[20973] nptl: robust mutexes: Lost wake-ups
|
||
[20974] locale: bs_BA: yesexpr/noexpr regexes accept any character
|
||
[20978] nis: strlen on null pointer in nss_nisplus
|
||
[20985] nptl: robust mutexes: lowlevelrobustlock assembly on x86 blocks on
|
||
wrong condition
|
||
[21014] string: i686 memchr overflows internal pointer check
|
||
[21019] libc: [mips] n32 lseek incorrect on overflow
|
||
[21022] libc: [microblaze] __backtrace get_frame_size namespace
|
||
[21026] libc: [MIPS] readahead syscall is broken on n64
|
||
[21028] math: Fallback fesetexceptflag should always succeed
|
||
[21045] libc: [powerpc-nofpu] swapcontext does not restore signal mask
|
||
[21047] math: arm: fpu_control.h: _FPU_GETCW/_FPU_SETCW is rejected by
|
||
clang
|
||
[21053] libc: [SH] Namespace pollution from sys/ucontext.h
|
||
[21061] librt: [microblaze] librt lost clock_* exports
|
||
[21073] libc: tunables: insecure environment variables passed to
|
||
subprocesses with AT_SECURE
|
||
[21081] string: Missing vzeroupper in memset-vec-unaligned-erms.S
|
||
|
||
Version 2.24
|
||
|
||
* The minimum Linux kernel version that this version of the GNU C Library
|
||
can be used with is 3.2, except on i[4567]86 and x86_64, where Linux
|
||
kernel version 2.6.32 or later suffices (on architectures that already
|
||
required kernel versions more recent than 3.2, those requirements remain
|
||
unchanged). Linux 3.2 or later kernel headers are required on all
|
||
architectures.
|
||
|
||
* The pap_AN locale has been deleted. This has been deprecated for a long
|
||
time. It has been replaced by pap_AW & pap_CW, both of which have long
|
||
been included in previous releases.
|
||
|
||
* The readdir_r and readdir64_r functions have been deprecated. It is
|
||
recommended to use readdir and readdir64 instead.
|
||
|
||
* The type “union wait” has been removed. It was deprecated in the early
|
||
1990s and never part of POSIX. Application code should use the int type
|
||
instead of “union wait”.
|
||
|
||
* A new NSS action is added to facilitate large distributed system
|
||
administration. The action, MERGE, allows remote user stores like LDAP
|
||
to be merged into local user stores like /etc/groups in order to provide
|
||
easy to use, updated, and managed sets of merged credentials. The new
|
||
action can be used by configuring it in /etc/nsswitch.conf:
|
||
group: files [SUCCESS=merge] nis
|
||
Implemented by Stephen Gallagher (Red Hat).
|
||
|
||
* The deprecated __malloc_initialize_hook variable has been removed from the
|
||
API.
|
||
|
||
* The long unused localedef --old-style option has been removed. It hasn't
|
||
done anything in over 16 years. Scripts using this option can safely
|
||
drop it.
|
||
|
||
* nextupl, nextup, nextupf, nextdownl, nextdown and nextdownf are added to
|
||
libm. They are defined by TS 18661 and IEEE754-2008. The nextup functions
|
||
return the next representable value in the direction of positive infinity
|
||
and the nextdown functions return the next representable value in the
|
||
direction of negative infinity. These are currently enabled as GNU
|
||
extensions.
|
||
|
||
Security related changes:
|
||
|
||
* An unnecessary stack copy in _nss_dns_getnetbyname_r was removed. It
|
||
could result in a stack overflow when getnetbyname was called with an
|
||
overly long name. (CVE-2016-3075)
|
||
|
||
* Previously, getaddrinfo copied large amounts of address data to the stack,
|
||
even after the fix for CVE-2013-4458 has been applied, potentially
|
||
resulting in a stack overflow. getaddrinfo now uses a heap allocation
|
||
instead. Reported by Michael Petlan. (CVE-2016-3706)
|
||
|
||
* The glob function suffered from a stack-based buffer overflow when it was
|
||
called with the GLOB_ALTDIRFUNC flag and encountered a long file name.
|
||
Reported by Alexander Cherepanov. (CVE-2016-1234)
|
||
|
||
* The Sun RPC UDP client could exhaust all available stack space when
|
||
flooded with crafted ICMP and UDP messages. Reported by Aldy Hernandez'
|
||
alloca plugin for GCC. (CVE-2016-4429)
|
||
|
||
* The IPv6 name server management code in libresolv could result in a memory
|
||
leak for each thread which is created, performs a failing naming lookup,
|
||
and exits. Over time, this could result in a denial of service due to
|
||
memory exhaustion. Reported by Matthias Schiffer. (CVE-2016-5417)
|
||
|
||
The following bugs are resolved with this release:
|
||
|
||
[1170] localedata: ne_NP: update Nepali locale definition file
|
||
[3629] manual: stpcpy description in string.texi refers to MS-DOG instead
|
||
of MS-DOS.
|
||
[6527] malloc: [powerpc] Malloc alignment insufficient for PowerPC
|
||
[6796] math: fdim() does not set errno on overflow
|
||
[10354] libc: posix_spawn should use vfork() in more cases than presently
|
||
[11213] localedata: localedata: add copyright disclaimer to locale files
|
||
[12143] localedata: chr_US: new Cherokee locale
|
||
[12450] localedata: sgs_LT: new locale
|
||
[12676] localedata: ln_CD: new locale
|
||
[13237] localedata: LC_ADDRESS.country_name: update all locales w/latest
|
||
CLDR data
|
||
[13304] math: fma, fmaf, fmal produce wrong results
|
||
[14259] build: --localedir arg to configure is ignored
|
||
[14499] nptl: Does posix_spawn invoke atfork handlers / use vfork?
|
||
[14750] libc: Race condition in posix_spawn vfork usage vs signal handlers
|
||
[14934] localedata: es_CL: wrong first weekday chilean locale
|
||
[15262] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of
|
||
romanisation
|
||
[15263] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of 1/0
|
||
and +/-
|
||
[15264] localedata: LC_MESSAGES.yesstr/nostr: lacking in many locales
|
||
[15368] nptl: raise() is not async-signal-safe
|
||
[15479] math: ceil, floor, round and trunc raise inexact exception
|
||
[15578] localedata: kk_KZ: various updates
|
||
[16003] localedata: pap_AN: punt old locale
|
||
[16137] localedata: iw_IL: punt old locale
|
||
[16190] localedata: eo: new esperanto locale
|
||
[16374] localedata: lv_LV: change currency symbol in LC_MONETARY to euro
|
||
[16742] malloc: race condition: pthread_atfork() called before first
|
||
malloc() results in unexpected locking behaviour/deadlocks
|
||
[16975] localedata: LC_MESSAGES.yesexpr/noexpr: revisit capitalization in
|
||
all locales
|
||
[16983] localedata: postal_fmt does not allow %l and %n modifiers
|
||
[17565] localedata: pt_PT: wrong (work-)week start
|
||
[17899] math: [powerpc] floorl returns negative zero with FE_DOWNWARD
|
||
[17950] build: Build fails with -msse
|
||
[18205] localedata: be_BY*: wrong first_weekday and first_workday
|
||
[18433] libc: posix_spawn does not return correctly upon failure to
|
||
execute
|
||
[18453] localedata: charmaps/IBM875: incorrect codes
|
||
[18712] string: bits/string2.h incompatible with -O2 -Werror=packed
|
||
-Wsystem-headers
|
||
[18896] localedata: he_IL: improvements for currency
|
||
[18911] localedata: ro_RO: Correcting week day name for "Tuesday" in
|
||
Romanian locale data
|
||
[18960] locale: s390: _nl_locale_subfreeres uses larl opcode on misaligned
|
||
symbol
|
||
[19056] libc: Deprecate readdir_r
|
||
[19133] localedata: pt_*: days & months should be lowercase in Portuguese
|
||
language
|
||
[19198] localedata: nl_NL: small improvements for Dutch locales
|
||
[19257] network: Per-thread memory leak in __res_vinit with IPv6
|
||
nameservers (CVE-2016-5417)
|
||
[19269] build: tst-audit4 and tst-audit10 failures with gcc-6 on non avx
|
||
machine
|
||
[19400] locale: Language missing in "iso-639.def", trivial fix in
|
||
description
|
||
[19431] malloc: Deadlock between fflush, getdelim, and fork
|
||
[19505] libc: Incorrect file descriptor validity checks in
|
||
posix_spawn_file_actions_add{open,close,dup2}
|
||
[19509] dynamic-link: dlsym, dlvsym do not report errors through dlerror
|
||
when using RTLD_NEXT
|
||
[19512] locale: Stale `#ifndef HAVE_BUILTIN_EXPECT' in
|
||
`intl/{gettextP,loadinfo}.h'
|
||
[19534] libc: execle, execlp may use malloc
|
||
[19568] localedata: *_CH: Swiss locales have inconsistent start of week
|
||
[19573] network: res_nclose and __res_maybe_init disagree about name
|
||
server initialization, breaking Hesiod
|
||
[19575] localedata: Status of GB18030 tables
|
||
[19581] localedata: sr_* date_fmt string contains additional newline
|
||
[19583] string: SSSE3_Fast_Copy_Backward flag needs to be enabled for AMD
|
||
Excavator core
|
||
[19592] math: [ldbl-128ibm] ceill incorrect in non-default rounding modes
|
||
[19593] math: [ldbl-128ibm] truncl incorrect in non-default rounding modes
|
||
[19594] math: [ldbl-128ibm] roundl incorrect in non-default rounding modes
|
||
[19595] math: [ldbl-128ibm] fmodl incorrect for results in subnormal
|
||
double range
|
||
[19602] math: [ldbl-128ibm] fmodl handling of equal arguments with low
|
||
part zero incorrect
|
||
[19603] math: [ldbl-128ibm] remainderl, remquol incorrect sign handling in
|
||
equality tests
|
||
[19610] dynamic-link: ldconfig -X removes stale symbolic links
|
||
[19613] libc: s390x (64 bit) macro expansion WCOREDUMP and others
|
||
[19633] locale: strfmon_l applies global locale to number formatting
|
||
[19642] network: Memory leak in getnameinfo
|
||
[19648] libc: test-skeleton.c: Do not set RLIMIT_DATA
|
||
[19653] libc: Potential for NULL pointer dereference (CWE-476) in
|
||
glibc-2.22
|
||
[19654] math: [x86_64] Need testcase for BZ #19590 fix
|
||
[19671] localedata: Missing Sanity Check for malloc() in 'tst-fmon.c' &
|
||
'tst-numeric.c'
|
||
[19674] math: [ldbl-128ibm] powl incorrect overflow handling
|
||
[19677] math: [ldbl-128ibm] remainderl equality test incorrect for zero
|
||
low part
|
||
[19678] math: [ldbl-128ibm] nextafterl, nexttowardl incorrect sign of zero
|
||
result
|
||
[19679] dynamic-link: gcc-4.9.3 C++ exception handling broken due to
|
||
unaligned stack
|
||
[19726] locale: Converting UCS4LE to INTERNAL with iconv() does not update
|
||
pointers and lengths in error-case.
|
||
[19727] locale: Converting from/to UTF-xx with iconv() does not always
|
||
report errors on UTF-16 surrogates values.
|
||
[19755] nscd: nscd assertion failure in gc
|
||
[19758] dynamic-link: Typo in EXTRA_LD_ENVVARS for x86-64
|
||
[19759] libc: mempcpy shouldn't be inlined
|
||
[19762] dynamic-link: HAS_CPU_FEATURE/HAS_ARCH_FEATURE are easy to misuse
|
||
[19765] libc: s390 needs an optimized mempcpy
|
||
[19779] glob: glob: buffer overflow with GLOB_ALTDIRFUNC due to incorrect
|
||
NAME_MAX limit assumption (CVE-2016-1234)
|
||
[19783] build: benchtests don't support --enable-hardcoded-path-in-tests
|
||
[19787] network: Missing and incorrect truncation checks in getnameinfo
|
||
[19790] math: [ldbl-128ibm] nearbyintl incorrect in non-default rounding
|
||
modes
|
||
[19791] network: Assertion failure in res_query.c with un-connectable name
|
||
server addresses
|
||
[19792] libc: MIPS: backtrace yields infinite backtrace with makecontext
|
||
[19822] math: libm.so install clobbers old version
|
||
[19825] network: resolv: send_vc can return uninitialized data in second
|
||
response to getaddrinfo
|
||
[19830] network: nss_dns: should check RDATA length against buffer length
|
||
[19831] network: nss_dns: getaddrinfo returns uninitialized data when
|
||
confronted with A/AAAA records of invalid size
|
||
[19837] nss: nss_db: No retries for some long lines with a larger buffer
|
||
[19848] math: powl(10,n) for n=-4,-5,-6,-7 is off by more than 1 ULP
|
||
[19853] stdio: Printing IBM long double in decimal with high precision is
|
||
sometimes incorrect
|
||
[19860] build: x86_64: compile errors for tst-audit10 and tst-auditmod10b
|
||
[19861] nptl: libpthread IFUNC resolver for fork can lead to crash
|
||
[19862] network: resolv, nss_dns: Remove remaining logging of unexpected
|
||
record types
|
||
[19865] network: Assertion failure or memory leak in
|
||
_nss_dns_getcanonname_r
|
||
[19868] network: nss_dns: netent code does not skip over non-PTR records
|
||
[19879] network: nss_dns: Stack overflow in getnetbyname implementation
|
||
(CVE-2016-3075)
|
||
[19881] string: Improve x86-64 memset
|
||
[19907] string: Incorrect memcpy tests
|
||
[19916] dynamic-link: S390: fprs/vrs are not saved/restored while
|
||
resolving symbols
|
||
[19925] libc: termios.h XCASE namespace
|
||
[19928] string: memmove-vec-unaligned-erms.S is slow with large data size
|
||
[19929] libc: limits.h NL_NMAX namespace
|
||
[19931] stdio: Memory leak in vfprintf
|
||
[19957] libc: clone(CLONE_VM) access invalid parent memory
|
||
[19963] localedata: en_IL: New locale
|
||
[19989] stdio: stdio.h cuserid namespace
|
||
[19994] network: getaddrinfo does not restore RES_USE_INET6 flag in
|
||
gethosts
|
||
[19996] locale: langinfo.h nl_langinfo_l namespace
|
||
[20005] stdio: fflush on a file opened with fmemopen resets position to 0
|
||
[20010] network: getaddrinfo: Stack overflow in hostent translation
|
||
(CVE-2016-3706)
|
||
[20012] stdio: libio: fmemopen append mode failure
|
||
[20014] stdio: stdio.h namespace for pre-threads POSIX
|
||
[20017] network: resolv: Use gmtime_r instead of gmtime in p_secstodate
|
||
[20023] libc: fcntl.h timespec namespace
|
||
[20024] math: [x86_64] vectorized sincos trashes the stack
|
||
[20031] network: nss_hesiod: Heap overflow in get_txt_records
|
||
[20041] time: sys/time.h timespec namespace
|
||
[20043] libc: unistd.h missing cuserid for UNIX98 and before
|
||
[20044] libc: unistd.h missing pthread_atfork for UNIX98
|
||
[20051] libc: ttyslot in wrong header under wrong conditions
|
||
[20054] libc: gethostname not declared for XPG4
|
||
[20055] libc: termios.h missing tcgetsid for XPG4
|
||
[20072] dynamic-link: x86 init_cpu_features is called twice in static
|
||
executable
|
||
[20073] libc: sys/stat.h fchmod namespace
|
||
[20074] libc: stdlib.h rand_r namespace
|
||
[20076] libc: sys/stat.h missing S_IFSOCK, S_ISSOCK for XPG4
|
||
[20094] libc: stdlib.h should not declare grantpt, ptsname, unlockpt for
|
||
XPG3
|
||
[20111] libc: struct sockaddr_storage cannot be aggregate-copied
|
||
[20112] network: sunrpc: stack (frame) overflow in Sun RPC clntudp_call
|
||
(CVE-2016-4429)
|
||
[20115] string: Extra alignment in memset-vec-unaligned-erms.S
|
||
[20119] libc: Wrong mask for processors level type from CPUID
|
||
[20139] dynamic-link: Upper part of zmm is zeroed if Glibc is built with
|
||
AS not supporting AVX512
|
||
[20151] math: [ldbl-128/ldbl-128ibm] j0l, j1l, y0l, y1l return sNaN for
|
||
sNaN argument
|
||
[20153] math: [ldbl-128ibm] sqrtl (sNaN) returns sNaN
|
||
[20156] math: [ldbl-128ibm] ceill, rintl etc. return sNaN for sNaN
|
||
argument
|
||
[20157] math: [powerpc] fabsl (sNaN) wrongly raises "invalid"
|
||
[20160] math: [powerpc] ceil, rint etc. return sNaN for sNaN input
|
||
[20178] libc: posix_spawn{p} should not call exit
|
||
[20191] stdio: libio: vtables hardening
|
||
[20195] string: FMA4 detection requires CPUID execution with register
|
||
eax=0x80000001
|
||
[20198] libc: quick_exit incorrectly destroys C++11 thread objects.
|
||
[20205] math: [i386/x86_64] nextafterl incorrect incrementing negative
|
||
subnormals
|
||
[20212] math: acos (sNaN) returns sNaN
|
||
[20213] math: asin (sNaN) returns sNaN
|
||
[20214] network: Linux header sync with linux/in6.h and ipv6.h again.
|
||
[20218] math: [i386] asinhl (sNaN) returns sNaN
|
||
[20219] math: [i386] atanhl (sNaN) returns sNaN
|
||
[20222] stdio: fopencookie: Mangle function pointers
|
||
[20224] math: [i386] cbrtl (sNaN) returns sNaN
|
||
[20225] math: ldexp, scalbn, scalbln return sNaN for sNaN input
|
||
[20226] math: [i386/x86_64] expl, exp10l, expm1l return sNaN for sNaN
|
||
input
|
||
[20227] math: [i386/x86_64] logl (sNaN) returns sNaN
|
||
[20228] math: [i386/x86_64] log10l (sNaN) returns sNaN
|
||
[20229] math: [i386/x86_64] log1pl (sNaN) returns sNaN
|
||
[20232] math: [ldbl-128] expm1l (sNaN) returns sNaN
|
||
[20233] math: [ldbl-128ibm] expm1l (sNaN) returns sNaN
|
||
[20234] math: [ldbl-128ibm] log1pl (sNaN) returns sNaN
|
||
[20235] math: [i386/x86_64] log2l (sNaN) returns sNaN
|
||
[20237] nss: nss_db: get*ent segfaults without preceding set*ent
|
||
[20240] math: modf (sNaN) returns sNaN
|
||
[20248] libc: debug/tst-longjump_chk2 calls printf from a signal handler
|
||
[20250] math: frexp (sNaN) returns sNaN
|
||
[20252] math: atan2 (sNaN, qNaN) fails to raise "invalid"
|
||
[20255] math: [i386] fdim, fdimf return with excess range and precision /
|
||
double rounding
|
||
[20256] math: [i386/x86_64] fdiml returns sNaN for sNaN input
|
||
[20260] string: ../sysdeps/x86/bits/string.h:1092:3: error: array
|
||
subscript is below array bounds [-Werror=array-bounds]
|
||
[20262] nis: _nss_nis_initgroups_dyn always returns NSS_STATUS_NOTFOUND
|
||
[20263] nptl: robust mutex deadlocks if other thread requests timedlock
|
||
(Only arm/linux)
|
||
[20277] libc: $dp is not initialized correctly in sysdeps/hppa/start.S
|
||
[20284] malloc: malloc: Corrupt arena avoidance causes unnecessary mmap
|
||
fallbacks
|
||
[20296] math: [i386/x86_64] scalbl returns sNaN for sNaN input, missing
|
||
"invalid" exceptions
|
||
[20314] nptl: make[4]: *** [/usr/include/stdlib.h] Error 1
|
||
[20316] localedata: id_ID: Februari instead of Pebruari
|
||
[20327] string: POWER8 strcasecmp returns incorrect result
|
||
[20347] math: Failure: Test: j0_downward (0xap+0)
|
||
[20348] libc: FAIL: misc/tst-preadvwritev64
|
||
[20349] libc: 64-bit value is passed differently in p{readv,writev}{64}
|
||
[20350] libc: There is no test for p{read,write}64
|
||
[20357] math: Incorrect cos result for 1.5174239687223976
|
||
[20384] build: Don't run libmvec-sincos-avx* tests on non avx machines
|
||
|
||
Version 2.23
|
||
|
||
* Unicode 8.0.0 Support: Character encoding, character type info, and
|
||
transliteration tables are all updated to Unicode 8.0.0, using new
|
||
and/or improved generator scripts contributed by Mike FABIAN (Red Hat).
|
||
These updates cause user visible changes, such as the fixes for bugs
|
||
89, 16061, and 18568.
|
||
|
||
* sched_setaffinity, pthread_setaffinity_np no longer attempt to guess the
|
||
kernel-internal CPU set size. This means that requests that change the
|
||
CPU affinity which failed before (for example, an all-ones CPU mask) will
|
||
now succeed. Applications that need to determine the effective CPU
|
||
affinities need to call sched_getaffinity or pthread_getaffinity_np after
|
||
setting it because the kernel can adjust it (and the previous size check
|
||
would not detect this in the majority of cases).
|
||
|
||
* The fts.h header can now be used with -D_FILE_OFFSET_BITS=64. With LFS
|
||
the following new symbols are used: fts64_children, fts64_close,
|
||
fts64_open, fts64_read and fts64_set.
|
||
|
||
* getaddrinfo now detects certain invalid responses on an internal netlink
|
||
socket. If such responses are received, an affected process will
|
||
terminate with an error message of "Unexpected error <number> on netlink
|
||
descriptor <number>" or "Unexpected netlink response of size <number> on
|
||
descriptor <number>". The most likely cause for these errors is a
|
||
multi-threaded application which erroneously closes and reuses the netlink
|
||
file descriptor while it is used by getaddrinfo.
|
||
|
||
* A defect in the malloc implementation, present since glibc 2.15 (2012) or
|
||
glibc 2.10 via --enable-experimental-malloc (2009), could result in the
|
||
unnecessary serialization of memory allocation requests across threads.
|
||
The defect is now corrected. Users should see a substantial increase in
|
||
the concurrent throughput of allocation requests for applications which
|
||
trigger this bug. Affected applications typically create and
|
||
destroy threads frequently. (Bug 19048 was reported and analyzed by
|
||
Ericsson.)
|
||
|
||
* There is now a --disable-timezone-tools configure option for disabling the
|
||
building and installing of the timezone related utilities (zic, zdump, and
|
||
tzselect). This is useful for people who build the timezone data and code
|
||
independent of the GNU C Library.
|
||
|
||
* The obsolete header <regexp.h> has been removed. Programs that require
|
||
this header must be updated to use <regex.h> instead.
|
||
|
||
* The obsolete functions bdflush, create_module, get_kernel_syms,
|
||
query_module and uselib are no longer available to newly linked binaries;
|
||
the header <sys/kdaemon.h> has been removed. These functions and header
|
||
were specific to systems using the Linux kernel and could not usefully be
|
||
used with the GNU C Library on systems with version 2.6 or later of the
|
||
Linux kernel.
|
||
|
||
* Optimized string, wcsmbs and memory functions for IBM z13.
|
||
Implemented by Stefan Liebler.
|
||
|
||
* Newly linked programs that define a variable called signgam will no longer
|
||
have it set by the lgamma, lgammaf and lgammal functions. Programs that
|
||
require signgam to be set by those functions must ensure that they use the
|
||
variable provided by the GNU C Library and declared in <math.h>, without
|
||
defining their own copy.
|
||
|
||
* The minimum GCC version that can be used to build this version of the GNU
|
||
C Library is GCC 4.7. Older GCC versions, and non-GNU compilers, can
|
||
still be used to compile programs using the GNU C Library.
|
||
|
||
Security related changes:
|
||
|
||
* An out-of-bounds value in a broken-out struct tm argument to strftime no
|
||
longer causes a crash. Reported by Adam Nielsen. (CVE-2015-8776)
|
||
|
||
* The LD_POINTER_GUARD environment variable can no longer be used to disable
|
||
the pointer guard feature. It is always enabled. Previously,
|
||
LD_POINTER_GUARD could be used to disable security hardening in binaries
|
||
running in privileged AT_SECURE mode. Reported by Hector Marco-Gisbert.
|
||
(CVE-2015-8777)
|
||
|
||
* An integer overflow in hcreate and hcreate_r could lead to an
|
||
out-of-bounds memory access. Reported by Szabolcs Nagy. (CVE-2015-8778)
|
||
|
||
* The catopen function no longer has unbounded stack usage. Reported by
|
||
Max. (CVE-2015-8779)
|
||
|
||
* The nan, nanf and nanl functions no longer have unbounded stack usage
|
||
depending on the length of the string passed as an argument to the
|
||
functions. Reported by Joseph Myers. (CVE-2014-9761)
|
||
|
||
* A stack-based buffer overflow was found in libresolv when invoked from
|
||
libnss_dns, allowing specially crafted DNS responses to seize control
|
||
of execution flow in the DNS client. The buffer overflow occurs in
|
||
the functions send_dg (send datagram) and send_vc (send TCP) for the
|
||
NSS module libnss_dns.so.2 when calling getaddrinfo with AF_UNSPEC
|
||
family. The use of AF_UNSPEC triggers the low-level resolver code to
|
||
send out two parallel queries for A and AAAA. A mismanagement of the
|
||
buffers used for those queries could result in the response of a query
|
||
writing beyond the alloca allocated buffer created by
|
||
_nss_dns_gethostbyname4_r. Buffer management is simplified to remove
|
||
the overflow. Thanks to the Google Security Team and Red Hat for
|
||
reporting the security impact of this issue, and Robert Holiday of
|
||
Ciena for reporting the related bug 18665. (CVE-2015-7547)
|
||
|
||
The following bugs are resolved with this release:
|
||
|
||
[89] localedata: Locales nb_NO and nn_NO should transliterate æøå
|
||
[887] math: Math library function "logb" and "nextafter" inconsistent
|
||
[2542] math: Incorrect return from float gamma (-0X1.FA471547C2FE5P+1)
|
||
[2543] math: Incorrect return from float gamma (-0X1.9260DCP+1)
|
||
[2558] math: Incorrect return from double gamma (-0X1.FA471547C2FE5P+1)
|
||
[2898] libc: [improve] warning: the use of `mktemp' is dangerous, better
|
||
use `mkstemp'
|
||
[4404] localedata: German translation of "Alarm clock" is misleading
|
||
[6799] math: nextafter() and nexttoward() doesn't set errno on
|
||
overflow/underflow errors
|
||
[6803] math: scalb(), scalbln(), scalbn() do not set errno on
|
||
overflow/underflow
|
||
[10432] nis: _nss_nis_setnetgrent assertion failure
|
||
[11460] libc: fts has no LFS support
|
||
[12926] network: getaddrinfo()/make_request() may spin forever
|
||
[13065] nptl: Race condition in pthread barriers
|
||
[13690] nptl: pthread_mutex_unlock potentially cause invalid access
|
||
[14341] dynamic-link: Dynamic linker crash when DT_JMPREL and DT_REL{,A}
|
||
are not contiguous
|
||
[14551] math: [ldbl-128ibm] strtold overflow handling for IBM long double
|
||
[14912] libc: Rename non-installed bits/*.h headers
|
||
[15002] libc: Avoid undefined behavior in posix_fallocate overflow check
|
||
[15367] math: Let gcc use __builtin_isinf
|
||
[15384] math: One constant fewer in ieee754/dbl-64/wordsize-64/s_finite.c
|
||
[15421] math: lgamma wrongly sets signgam for ISO C
|
||
[15470] math: [arm] On ARM llrintl() and llroundl() do not raise
|
||
FE_INVALID with argument out of range
|
||
[15491] math: [i386/x86_64] x86 nearbyint implementations wrongly clear
|
||
all exceptions
|
||
[15786] dynamic-link: ifunc resolver functions can smash function
|
||
arguments
|
||
[15918] math: Unnecessary check for equality in hypotf()
|
||
[16061] localedata: Review / update transliteration data
|
||
[16068] math: [i386/x86_64] x86 and x86_64 fesetenv exclude state they
|
||
should include
|
||
[16141] time: strptime %z offset restriction
|
||
[16171] math: drem should be alias of remainder
|
||
[16296] math: fegetround is pure?
|
||
[16347] math: [ldbl-128ibm] ldbl-128/e_lgammal_r.c may not be suitable.
|
||
[16364] libc: sleep may leave SIGCHLD blocked on sync cancellation on
|
||
GNU/Linux
|
||
[16399] math: [mips] lrint / llrint / lround / llround missing exceptions
|
||
[16415] math: Clean up ldbl-128 / ldbl-128ibm expm1l for large positive
|
||
arguments
|
||
[16422] math: [powerpc] math-float, math-double failing llrint tests with
|
||
"Exception "Inexact" set" on ppc32
|
||
[16495] localedata: nl_NL: date_fmt: shuffle year/month around
|
||
[16517] math: Missing underflow exception from tanf/tan/tanl
|
||
[16519] math: Missing underflow exception from sinhf
|
||
[16520] math: Missing underflow exception from tanhf
|
||
[16521] math: Missing underflow exception from exp2
|
||
[16620] math: [ldbl-128ibm] exp10l spurious overflows / bad directed
|
||
rounding results
|
||
[16734] stdio: fopen calls mmap to allocate its buffer
|
||
[16961] math: nan function incorrect handling of bad sequences
|
||
[16962] math: nan function unbounded stack allocation (CVE-2014-9761)
|
||
[16973] localedata: Fix lang_lib/lang_term as per ISO 639-2
|
||
[16985] locale: localedef: confusing error message when opening output
|
||
fails
|
||
[17118] math: ctanh(INFINITY + 2 * I) returns incorrect value
|
||
[17197] locale: Redundant shift character in iconv conversion output at
|
||
block boundary
|
||
[17243] libc: trunk/posix/execl.c:53: va_args problem ?
|
||
[17244] libc: trunk/sysdeps/unix/sysv/linux/semctl.c:116: va_args muxup ?
|
||
[17250] dynamic-link: static linking breaks nss loading
|
||
(getaddrinfo/getpwnam/etc...)
|
||
[17404] libc: atomic_exchange_rel lacking a barrier on MIPS16, GCC before
|
||
4.7?
|
||
[17441] math: isnan() should use __builtin_isnan() in GCC
|
||
[17514] nptl: Assert failure unlocking ERRORCHECK mutex after timedlock
|
||
(related to lock elision)
|
||
[17787] manual: Exponent on page 324 of the PDF ends prematurely
|
||
[17886] time: strptime should be able to parse "Z" as a timezone with %z
|
||
[17887] time: strptime should be able to parse "+01:00" style timezones
|
||
[17905] libc: catopen() Multiple unbounded stack allocations
|
||
(CVE-2015-8779)
|
||
[18084] libc: backtrace (..., 0) dumps core on x86
|
||
[18086] libc: nice() sets errno to 0 on success
|
||
[18240] libc: hcreate, hcreate_r should fail with ENOMEM if element count
|
||
is too large (CVE-2015-8778)
|
||
[18251] dynamic-link: SONAME missing when audit modules provides path
|
||
[18265] libc: add attributes for wchar string and memory functions
|
||
[18370] math: csqrt missing underflows
|
||
[18421] libc: [hppa] read-only segment has dynamic relocations
|
||
[18472] libc: Obsolete syscall wrappers should be compat symbols
|
||
[18480] libc: hppa glibc miscompilation in sched_setaffinity()
|
||
[18491] localedata: Update tr_TR LC_CTYPE as part of Unicode updates
|
||
[18525] localedata: Remove locale timezone information
|
||
[18560] libc: [powerpc] spurious bits/ipc.h definitions
|
||
[18568] localedata: Update locale data to Unicode 8.0
|
||
[18589] locale: sort-test.sh fails at random
|
||
[18595] math: ctan, ctanh missing underflows
|
||
[18604] libc: assert macro-expands its argument
|
||
[18610] math: S390: fetestexcept() reports any exception if DXC-code
|
||
contains a vector instruction exception.
|
||
[18611] math: j1, jn missing errno setting on underflow
|
||
[18618] localedata: sync Chechen locale definitions with other *_RU
|
||
locales
|
||
[18647] math: powf(-0x1.000002p0, 0x1p30) returns 0 instead of +inf
|
||
[18661] libc: Some x86-64 assembly codes don't align stack to 16 bytes
|
||
[18665] network: In send_dg, the recvfrom function is NOT always using the
|
||
buffer size of a newly created buffer (CVE-2015-7547)
|
||
[18674] libc: [i386] trunk/sysdeps/i386/tst-auditmod3b.c:84: possible
|
||
missing break ?
|
||
[18675] libc: fpathconf(_PC_NAME_MAX) fails against large filesystems for
|
||
32bit processes
|
||
[18681] libc: regexp.h is obsolete and buggy, and should be desupported
|
||
[18699] math: tilegx cproj() for various complex infinities does not yield
|
||
infinity
|
||
[18724] libc: Harden put*ent functions against data injection
|
||
[18743] nptl: PowerPC: findutils testcase fails with --enable-lock-elision
|
||
[18755] build: build errors with -DNDEBUG
|
||
[18757] stdio: fmemopen fails to set errno on failure
|
||
[18778] dynamic-link: ld.so crashes if failed dlopen causes libpthread to
|
||
be forced unloaded
|
||
[18781] libc: openat64 lacks O_LARGEFILE
|
||
[18787] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/atomic.h:71:6:
|
||
error: can’t find a register in class ‘R1_REGS’ while reloading ‘asm’
|
||
[18789] math: [ldbl-128ibm] sinhl inaccurate near 0
|
||
[18790] math: [ldbl-128ibm] tanhl inaccurate
|
||
[18795] libc: stpncpy fortification misses buffer lengths that are
|
||
statically too large
|
||
[18796] build: build fails for --disable-mathvec
|
||
[18803] math: hypot missing underflows
|
||
[18820] stdio: fmemopen may leak memory on failure
|
||
[18823] math: csqrt spurious underflows
|
||
[18824] math: fma spurious underflows
|
||
[18825] math: pow missing underflows
|
||
[18857] math: [ldbl-128ibm] nearbyintl wrongly uses signaling comparisons
|
||
[18868] nptl: pthread_barrier_init typo has in-theory-undefined behavior
|
||
[18870] build: sem_open.c fails to compile with missing symbol
|
||
FUTEX_SHARED
|
||
[18872] stdio: Fix memory leak in printf_positional
|
||
[18873] libc: posix_fallocate overflow check ineffective
|
||
[18875] math: Excess precision leads incorrect libm
|
||
[18877] libc: arm: mmap offset regression
|
||
[18887] libc: memory corruption when using getmntent on blank lines
|
||
[18918] localedata: hu_HU: change time to HH:MM:SS format
|
||
[18921] libc: Regression: extraneous stat() and fstat() performed by
|
||
opendir()
|
||
[18928] dynamic-link: LD_POINTER_GUARD is not ignored for privileged
|
||
binaries (CVE-2015-8777)
|
||
[18951] math: tgamma missing underflows
|
||
[18952] math: [ldbl-128/ldbl-128ibm] lgammal spurious "invalid", incorrect
|
||
signgam
|
||
[18953] localedata: lt_LT: change currency symbol to the euro
|
||
[18956] math: powf inaccuracy
|
||
[18961] math: [i386] exp missing underflows
|
||
[18966] math: [i386] exp10 missing underflows
|
||
[18967] math: math.h XSI POSIX namespace (gamma, isnan, scalb)
|
||
[18969] build: multiple string test failures due to missing locale
|
||
dependencies
|
||
[18970] libc: Reference of pthread_setcancelstate in libc.a
|
||
[18977] math: float / long double Bessel functions not in XSI POSIX
|
||
[18980] math: i386 libm functions return with excess range and precision
|
||
[18981] math: i386 scalb*, ldexp return with excess range and precision
|
||
[18982] stdio: va_list and vprintf
|
||
[18985] time: Passing out of range data to strftime() causes a segfault
|
||
(CVE-2015-8776)
|
||
[19003] math: [x86_64] fma4 version of pow inappropriate contraction
|
||
[19007] libc: FAIL: elf/check-localplt with -z now and binutils 2.26
|
||
[19012] locale: iconv_open leaks memory on error path
|
||
[19016] math: clog, clog10 inaccuracy
|
||
[19018] nptl: Mangle function pointers in tls_dtor_list
|
||
[19032] math: [i386] acosh (-qNaN) spurious "invalid" exception
|
||
[19046] math: ldbl-128 / ldbl-128ibm lgamma bad overflow handling
|
||
[19048] malloc: malloc: arena free list can become cyclic, increasing
|
||
contention
|
||
[19049] math: [powerpc] erfc incorrect zero sign
|
||
[19050] math: [powerpc] log* incorrect zero sign
|
||
[19058] math: [x86_64] Link fail with -fopenmp and -flto
|
||
[19059] math: nexttoward overflow incorrect in non-default rounding modes
|
||
[19071] math: ldbl-96 lroundl incorrect just below powers of 2
|
||
[19074] network: Data race in _res_hconf_reorder_addrs
|
||
[19076] math: [ldbl-128ibm] log1pl (-1) wrong sign of infinity
|
||
[19077] math: [ldbl-128ibm] logl (1) incorrect sign of zero result
|
||
[19078] math: [ldbl-128ibm] expl overflow incorrect in non-default
|
||
rounding modes
|
||
[19079] math: dbl-64/wordsize-64 lround based on llround incorrect for
|
||
ILP32
|
||
[19085] math: ldbl-128 lrintl, lroundl missing exceptions for 32-bit long
|
||
[19086] manual: posix_fallocate64 documented argument order is wrong.
|
||
[19088] math: lround, llround missing exceptions close to overflow
|
||
threshold
|
||
[19094] math: lrint, llrint missing exceptions close to overflow threshold
|
||
[19095] math: dbl-64 lrint incorrect for 64-bit long
|
||
[19122] dynamic-link: Unnecessary PLT relocations in librtld.os
|
||
[19124] dynamic-link: ld.so failed to build with older assembler
|
||
[19125] math: [powerpc32] llroundf, llround incorrect exceptions
|
||
[19129] dynamic-link: [arm] Concurrent lazy TLSDESC resolution can crash
|
||
[19134] math: [powerpc32] lround, lroundf spurious exceptions
|
||
[19137] libc: i386/epoll_pwait.S doesn't support cancellation
|
||
[19143] nptl: Remove CPU set size checking from sched_setaffinity,
|
||
pthread_setaffinity_np
|
||
[19156] math: [ldbl-128] j0l spurious underflows
|
||
[19164] nptl: tst-getcpu fails with many possible CPUs
|
||
[19168] math: math/test-ildoubl and math/test-ldouble failure
|
||
[19174] nptl: PowerPC: TLE enabled pthread mutex performs poorly.
|
||
[19178] dynamic-link: ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA confuses
|
||
prelink
|
||
[19181] math: [i386/x86_64] fesetenv (FE_DFL_ENV), fesetenv
|
||
(FE_NOMASK_ENV) do not clear SSE exceptions
|
||
[19182] malloc: malloc deadlock between ptmalloc_lock_all and
|
||
_int_new_arena/reused_arena
|
||
[19189] math: [ldbl-128] log1pl (-qNaN) spurious "invalid" exception
|
||
[19201] math: dbl-64 remainder incorrect sign of zero result
|
||
[19205] math: bits/math-finite.h conditions do not match math.h and
|
||
bits/mathcalls.h
|
||
[19209] math: bits/math-finite.h wrongly maps ldexp to scalbn
|
||
[19211] math: lgamma functions do not set signgam for -ffinite-math-only
|
||
for C99-based standards
|
||
[19212] libc: features.h not -Wundef clean
|
||
[19213] math: [i386/x86_64] log* (1) incorrect zero sign for -ffinite-
|
||
math-only
|
||
[19214] libc: Family and model identification for AMD CPU's are incorrect.
|
||
[19219] libc: GLIBC build fails for ia64 with missing __nearbyintl
|
||
[19228] math: [powerpc] nearbyint wrongly clears "inexact", leaves traps
|
||
disabled
|
||
[19235] math: [powerpc64] lround, lroundf, llround, llroundf spurious
|
||
"inexact" exceptions
|
||
[19238] math: [powerpc] round, roundf spurious "inexact" for integer
|
||
arguments
|
||
[19242] libc: strtol incorrect in Turkish locales
|
||
[19243] malloc: reused_arena can pick an arena on the free list, leading
|
||
to an assertion failure and reference count corruption
|
||
[19253] time: tzset() ineffective when temporary TZ did not include DST
|
||
rules
|
||
[19266] math: strtod ("NAN(I)") incorrect in Turkish locales
|
||
[19270] math: [hppa] Shared libm missing __isnanl
|
||
[19285] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/mman.h: missing
|
||
MAP_HUGETLB and MAP_STACK defines
|
||
[19313] nptl: Wrong __cpu_mask for x32
|
||
[19347] libc: grantpt: try to force a specific gid even without pt_chown
|
||
[19349] math: [ldbl-128ibm] tanhl inaccurate for small arguments
|
||
[19350] math: [ldbl-128ibm] sinhl spurious overflows
|
||
[19351] math: [ldbl-128ibm] logl inaccurate near 1
|
||
[19363] time: x32: times() return value wrongly truncates/sign extends
|
||
from 32bit
|
||
[19367] dynamic-link: Improve branch prediction on Silvermont
|
||
[19369] network: Default domain name not reset by res_ninit when "search"
|
||
/ "domain" entry is removed from resolv.conf
|
||
[19375] math: powerpc: incorrect results for POWER7 logb with negative
|
||
subnormals
|
||
[19385] localedata: bg_BG: time separator should be colon, not comma
|
||
[19408] libc: linux personality syscall wrapper may erroneously return an
|
||
error on 32-bit architectures
|
||
[19415] libc: dladdr returns wrong names on hppa
|
||
[19432] libc: iconv rejects redundant escape sequences in IBM900, IBM903,
|
||
IBM905, IBM907, and IBM909
|
||
[19439] math: Unix98 isinf and isnan functions conflict with C++11
|
||
[19443] build: build failures with -DDEBUG
|
||
[19451] build: Make check fails on test-double-vlen2
|
||
[19462] libc: Glibc failed to build with -Os
|
||
[19465] math: Wrong code with -Os
|
||
[19466] time: time/tst-mktime2.c is compiled into an infinite loop with
|
||
-Os
|
||
[19467] string: Fast_Unaligned_Load needs to be enabled for Excavator core
|
||
CPU's.
|
||
[19475] libc: Glibc 2.22 doesn't build on sparc [PATCH]
|
||
[19486] math: S390: Math tests fail with "Exception Inexact set".
|
||
[19529] libc: [ARM]: FAIL: stdlib/tst-makecontext
|
||
[19550] libc: [mips] mmap negative offset handling inconsistent with other
|
||
architectures
|
||
[19590] math: Fail to build shared objects that use libmvec.so functions.
|
||
|
||
Version 2.22
|
||
|
||
* The following bugs are resolved with this release:
|
||
|
||
438, 2981, 4719, 6544, 6792, 11216, 12836, 13028, 13064, 13151, 13152,
|
||
14094, 14113, 14292, 14841, 14906, 14958, 15319, 15467, 15790, 15969,
|
||
16159, 16339, 16350, 16351, 16352, 16353, 16361, 16512, 16526, 16538,
|
||
16559, 16560, 16704, 16783, 16850, 17053, 17090, 17195, 17269, 17293,
|
||
17322, 17403, 17475, 17523, 17542, 17569, 17581, 17588, 17596, 17620,
|
||
17621, 17628, 17631, 17692, 17711, 17715, 17776, 17779, 17792, 17833,
|
||
17836, 17841, 17912, 17916, 17930, 17932, 17944, 17949, 17964, 17965,
|
||
17967, 17969, 17977, 17978, 17987, 17991, 17996, 17998, 17999, 18007,
|
||
18019, 18020, 18029, 18030, 18032, 18034, 18036, 18038, 18039, 18042,
|
||
18043, 18046, 18047, 18049, 18068, 18078, 18080, 18093, 18100, 18104,
|
||
18110, 18111, 18116, 18125, 18128, 18134, 18138, 18185, 18196, 18197,
|
||
18206, 18210, 18211, 18217, 18219, 18220, 18221, 18234, 18244, 18245,
|
||
18247, 18287, 18319, 18324, 18333, 18346, 18371, 18383, 18397, 18400,
|
||
18409, 18410, 18412, 18418, 18422, 18434, 18444, 18457, 18468, 18469,
|
||
18470, 18479, 18483, 18495, 18496, 18497, 18498, 18502, 18507, 18508,
|
||
18512, 18513, 18519, 18520, 18522, 18527, 18528, 18529, 18530, 18532,
|
||
18533, 18534, 18536, 18539, 18540, 18542, 18544, 18545, 18546, 18547,
|
||
18549, 18553, 18557, 18558, 18569, 18583, 18585, 18586, 18592, 18593,
|
||
18594, 18602, 18612, 18613, 18619, 18633, 18635, 18641, 18643, 18648,
|
||
18657, 18676, 18694, 18696, 18887.
|
||
|
||
* Cache information can be queried via sysconf() function on s390 e.g. with
|
||
_SC_LEVEL1_ICACHE_SIZE as argument.
|
||
|
||
* A buffer overflow in gethostbyname_r and related functions performing DNS
|
||
requests has been fixed. If the NSS functions were called with a
|
||
misaligned buffer, the buffer length change due to pointer alignment was
|
||
not taken into account. This could result in application crashes or,
|
||
potentially arbitrary code execution, using crafted, but syntactically
|
||
valid DNS responses. (CVE-2015-1781)
|
||
|
||
* The time zone file parser has been made more robust against crafted time
|
||
zone files, avoiding heap buffer overflows related to the processing of
|
||
the tzh_ttisstdcnt and tzh_ttisgmtcnt fields, and a stack overflow due to
|
||
large time zone data files. Overly long time zone specifiers in the TZ
|
||
variable no longer result in stack overflows and crashes.
|
||
|
||
* A powerpc and powerpc64 optimization for TLS, similar to TLS descriptors
|
||
for LD and GD on x86 and x86-64, has been implemented. You will need
|
||
binutils-2.24 or later to enable this optimization.
|
||
|
||
* Character encoding and ctype tables were updated to Unicode 7.0.0, using
|
||
new generator scripts contributed by Pravin Satpute and Mike FABIAN (Red
|
||
Hat). These updates cause user visible changes, such as the fix for bug
|
||
17998.
|
||
|
||
* CVE-2014-8121 The NSS backends shared internal state between the getXXent
|
||
and getXXbyYY NSS calls for the same database, causing a denial-of-service
|
||
condition in some applications.
|
||
|
||
* Added vector math library named libmvec with the following vectorized x86_64
|
||
implementations: cos, cosf, sin, sinf, sincos, sincosf, log, logf, exp, expf,
|
||
pow, powf.
|
||
The library can be disabled with --disable-mathvec. Use of the functions is
|
||
enabled with -fopenmp -ffast-math starting from -O1 for GCC version >= 4.9.0.
|
||
Shared library libmvec.so is linked in as needed when using -lm (no need to
|
||
specify -lmvec explicitly for not static builds).
|
||
Visit <https://sourceware.org/glibc/wiki/libmvec> for detailed information.
|
||
|
||
* A new fmemopen implementation has been added with the goal of POSIX
|
||
compliance. The new implementation fixes the following long-standing
|
||
issues: BZ#6544, BZ#11216, BZ#12836, BZ#13151, BZ#13152, and BZ#14292. The
|
||
old implementation is still present for use be by existing binaries.
|
||
|
||
* The 32-bit sparc sigaction ABI was inadvertently broken in the 2.20 and 2.21
|
||
releases. It has been fixed to match 2.19 and older, but binaries built
|
||
against 2.20 and 2.21 might need to be recompiled. See BZ#18694.
|
||
|
||
* Port to Native Client running on ARMv7-A (--host=arm-nacl).
|
||
Contributed by Roland McGrath (Google).
|
||
|
||
* The header <regexp.h> is deprecated, and will be removed in a future
|
||
release. Use of this header will trigger a deprecation warning.
|
||
Application developers should update their code to use <regex.h> instead.
|
||
|
||
This header was formerly part of SUS, but was deprecated in 1994 and
|
||
removed from the standard in 2001. Also, the glibc implementation
|
||
leaks memory. See BZ#18681 for more details.
|
||
|
||
Version 2.21
|
||
|
||
* The following bugs are resolved with this release:
|
||
|
||
6652, 10672, 12674, 12847, 12926, 13862, 14132, 14138, 14171, 14498,
|
||
15215, 15378, 15884, 16009, 16418, 16191, 16469, 16576, 16617, 16618,
|
||
16619, 16657, 16740, 16857, 17192, 17266, 17273, 17344, 17363, 17370,
|
||
17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522, 17555,
|
||
17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585, 17589,
|
||
17594, 17601, 17608, 17616, 17625, 17630, 17633, 17634, 17635, 17647,
|
||
17653, 17657, 17658, 17664, 17665, 17668, 17682, 17702, 17717, 17719,
|
||
17722, 17723, 17724, 17725, 17732, 17733, 17744, 17745, 17746, 17747,
|
||
17748, 17775, 17777, 17780, 17781, 17782, 17791, 17793, 17796, 17797,
|
||
17801, 17803, 17806, 17834, 17844, 17848, 17868, 17869, 17870, 17885,
|
||
17892.
|
||
|
||
* CVE-2015-1472 CVE-2015-1473 Under certain conditions wscanf can allocate
|
||
too little memory for the to-be-scanned arguments and overflow the
|
||
allocated buffer. The implementation now correctly computes the required
|
||
buffer size when using malloc, and switches to malloc from alloca as
|
||
intended.
|
||
|
||
* A new semaphore algorithm has been implemented in generic C code for all
|
||
machines. Previous custom assembly implementations of semaphore were
|
||
difficult to reason about or ensure that they were safe. The new version
|
||
of semaphore supports machines with 64-bit or 32-bit atomic operations.
|
||
The new semaphore algorithm is used by sem_init, sem_open, sem_post,
|
||
sem_wait, sem_timedwait, sem_trywait, and sem_getvalue.
|
||
|
||
* Port to Altera Nios II has been contributed by Mentor Graphics.
|
||
|
||
* Optimized strcpy, stpcpy, strncpy, stpncpy, strcmp, and strncmp
|
||
implementations for powerpc64/powerpc64le.
|
||
Implemented by Adhemerval Zanella (IBM).
|
||
|
||
* Added support for TSX lock elision of pthread mutexes on powerpc32, powerpc64
|
||
and powerpc64le. This may improve lock scaling of existing programs on
|
||
HTM capable systems. The lock elision code is only enabled with
|
||
--enable-lock-elision=yes. Also, the TSX lock elision implementation for
|
||
powerpc will issue a transaction abort on every syscall to avoid side
|
||
effects being visible outside transactions.
|
||
|
||
* Optimized strcpy, stpcpy, strchrnul and strrchr implementations for
|
||
AArch64. Contributed by ARM Ltd.
|
||
|
||
* i386 memcpy functions optimized with SSE2 unaligned load/store.
|
||
|
||
* CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
|
||
under certain input conditions resulting in the execution of a shell for
|
||
command substitution when the application did not request it. The
|
||
implementation now checks WRDE_NOCMD immediately before executing the
|
||
shell and returns the error WRDE_CMDSUB as expected.
|
||
|
||
* CVE-2012-3406 printf-style functions could run into a stack overflow when
|
||
processing format strings with a large number of format specifiers.
|
||
|
||
* CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
|
||
infinite loop if the DNS response contained a PTR record of an unexpected
|
||
format.
|
||
|
||
* The minimum GCC version that can be used to build this version of the GNU
|
||
C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
|
||
still be used to compile programs using the GNU C Library.
|
||
|
||
* The GNU C Library is now built with -Werror by default. This can be
|
||
disabled by configuring with --disable-werror.
|
||
|
||
* New locales: tu_IN, bh_IN, raj_IN, ce_RU.
|
||
|
||
* The obsolete sigvec function has been removed. This was the original
|
||
4.2BSD interface that inspired the POSIX.1 sigaction interface, which
|
||
programs have been using instead for about 25 years. Of course, ABI
|
||
compatibility for old binaries using sigvec remains intact.
|
||
|
||
* Merged gettext 0.19.3 into the intl subdirectory. This fixes building
|
||
with newer versions of bison.
|
||
|
||
* Support for MIPS o32 FPXX, FP64A and FP64 ABI Extensions.
|
||
The original MIPS o32 hard-float ABI requires an FPU where double-precision
|
||
registers overlay two consecutive single-precision registers. MIPS32R2
|
||
introduced a new FPU mode (FR=1) where double-precision registers extend the
|
||
corresponding single-precision registers which is incompatible with the
|
||
o32 hard-float ABI. The MIPS SIMD ASE and the MIPSR6 architecture both
|
||
require the use of FR=1 making a transition necessary. New o32 ABI
|
||
extensions enable users to migrate over time from the original o32 ABI
|
||
through to the updated o32 FP64 ABI. To achieve this the dynamic linker now
|
||
tracks the ABI of any loaded object and verifies that new objects are
|
||
compatible. Mode transitions will also be requested as required and
|
||
unsupportable objects will be rejected. The ABI checks include both soft and
|
||
hard float ABIs for o32, n32 and n64.
|
||
|
||
GCC 5 with GNU binutils 2.25 onwards:
|
||
It is strongly recommended that all o32 system libraries are built using the
|
||
new o32 FPXX ABI (-mfpxx) to facilitate the transition as this is compatible
|
||
with the original and all new o32 ABI extensions. Configure a MIPS GCC
|
||
compiler using --with-fp-32=xx to set this by default.
|
||
|
||
Version 2.20
|
||
|
||
* The following bugs are resolved with this release:
|
||
|
||
6804, 9894, 11505, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347,
|
||
15514, 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198,
|
||
16275, 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447,
|
||
16516, 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600,
|
||
16609, 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639,
|
||
16642, 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689,
|
||
16695, 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739,
|
||
16740, 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791,
|
||
16796, 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849,
|
||
16854, 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912,
|
||
16915, 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958,
|
||
16965, 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022,
|
||
17031, 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078,
|
||
17079, 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150,
|
||
17153, 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
|
||
|
||
* Reverted change of ABI data structures for s390 and s390x:
|
||
On s390 and s390x the size of struct ucontext and jmp_buf was increased in
|
||
2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
|
||
of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
|
||
are preserved pointing straight to the same implementation as the old ones.
|
||
Given that, new callers will simply provide a too-big buffer to these
|
||
functions. Any applications/libraries out there that embed jmp_buf or
|
||
ucontext_t in an ABI-relevant data structure that have already been rebuilt
|
||
against 2.19 headers will have to rebuilt again. This is necessary in any
|
||
case to revert the breakage in their ABI caused by the glibc change.
|
||
|
||
* Support for file description locks is added to systems running the
|
||
Linux kernel. The standard file locking interfaces are extended to
|
||
operate on file descriptions, not file descriptors, via the use of
|
||
F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
|
||
are associated with an open file instead of a process.
|
||
|
||
* Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
|
||
|
||
* The minimum Linux kernel version that this version of the GNU C Library
|
||
can be used with is 2.6.32.
|
||
|
||
* Running the testsuite no longer terminates as soon as a test fails.
|
||
Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
|
||
with PASS or FAIL lines for individual tests. A summary of the results is
|
||
printed, including a list of failing lists, and "make check" exits with
|
||
error status if there were any unexpected failures. "make check
|
||
stop-on-test-failure=y" may be used to keep the old behavior.
|
||
|
||
* The am33 port, which had not worked for several years, has been removed
|
||
from ports.
|
||
|
||
* The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
|
||
supported; they now act the same as _DEFAULT_SOURCE (but generate a
|
||
warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
|
||
conflicted with POSIX (support for which was removed in 2.19), the
|
||
interfaces those macros enabled remain available when compiling with
|
||
_GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
|
||
test macros defined.
|
||
|
||
* Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
|
||
|
||
* Added support for TX lock elision of pthread mutexes on s390 and s390x.
|
||
This may improve lock scaling of existing programs on TX capable systems.
|
||
The lock elision code is only built with --enable-lock-elision=yes and
|
||
then requires a GCC version supporting the TX builtins. With lock elision
|
||
default mutexes are elided via __builtin_tbegin, if the cpu supports
|
||
transactions. By default lock elision is not enabled and the elision code
|
||
is not built.
|
||
|
||
* CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
|
||
copy the path argument. This allowed programs to cause posix_spawn to
|
||
deference a dangling pointer, or use an unexpected pathname argument if
|
||
the string was modified after the posix_spawn_file_actions_addopen
|
||
invocation.
|
||
|
||
* All supported architectures now use the main glibc sysdeps directory
|
||
instead of some being in a separate "ports" directory (which was
|
||
distributed separately before glibc 2.17).
|
||
|
||
* The NPTL implementation of POSIX pthreads is no longer an "add-on".
|
||
On configurations that support it (all Linux configurations), it's now
|
||
used regardless of the --enable-add-ons switch to configure. It is no
|
||
longer possible to build such configurations without pthreads support.
|
||
|
||
* Locale names, including those obtained from environment variables (LANG
|
||
and the LC_* variables), are more tightly checked for proper syntax.
|
||
setlocale will now fail (with EINVAL) for locale names that are overly
|
||
long, contain slashes without starting with a slash, or contain ".." path
|
||
components. (CVE-2014-0475) Previously, some valid locale names were
|
||
silently replaced with the "C" locale when running in AT_SECURE mode
|
||
(e.g., in a SUID program). This is no longer necessary because of the
|
||
additional checks.
|
||
|
||
* On x86-64, the dynamic linker's lazy-binding support is now compatible
|
||
with application code using Intel MPX instructions. (With all previous
|
||
versions, the MPX register state could be clobbered when making calls
|
||
into or out of a shared library.) Note that while the new dynamic
|
||
linker is compatible with all known x86 hardware whether or not it
|
||
supports Intel MPX, some x86 instruction-set emulators might fail to
|
||
handle the new instruction encodings. This is known to affect Valgrind
|
||
versions up through 3.9 (but will be fixed in the forthcoming 3.10
|
||
release), and might affect other tools that do instruction emulation.
|
||
|
||
* Support for loadable gconv transliteration modules has been removed.
|
||
The support for transliteration modules has been non-functional for
|
||
over a decade, and the removal is prompted by security defects. The
|
||
normal gconv conversion modules are still supported. Transliteration
|
||
with //TRANSLIT is still possible, and the //IGNORE specifier
|
||
continues to be supported. (CVE-2014-5119)
|
||
|
||
* Decoding a crafted input sequence in the character sets IBM933, IBM935,
|
||
IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
|
||
resulting a denial-of-service security vulnerability in applications which
|
||
use functions related to iconv. (CVE-2014-6040)
|
||
|
||
Version 2.19
|
||
|
||
* The following bugs are resolved with this release:
|
||
|
||
156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
|
||
7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
|
||
12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
|
||
14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
|
||
15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
|
||
15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
|
||
15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
|
||
15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
|
||
15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
|
||
15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
|
||
15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
|
||
15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
|
||
16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
|
||
16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
|
||
16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
|
||
16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
|
||
16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
|
||
16431, 16453, 16474, 16506, 16510, 16529
|
||
|
||
* Slovenian translations for glibc messages have been contributed by the
|
||
Translation Project's Slovenian team of translators.
|
||
|
||
* The public headers no longer use __unused nor __block. This change is to
|
||
support compiling programs that are derived from BSD sources and use
|
||
__unused internally, and to support compiling with Clang's -fblock
|
||
extension which uses __block.
|
||
|
||
* CVE-2012-4412 The strcoll implementation caches indices and rules for
|
||
large collation sequences to optimize multiple passes. This cache
|
||
computation may overflow for large collation sequences and may cause a
|
||
stack or buffer overflow. This is now fixed to use a slower algorithm
|
||
which does not use a cache if there is an integer overflow.
|
||
|
||
* CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
|
||
rules for large collation sequences to optimize multiple passes and falls
|
||
back to alloca if malloc fails, resulting in a possible stack overflow.
|
||
The implementation now falls back to an uncached collation sequence lookup
|
||
if malloc fails.
|
||
|
||
* CVE-2013-4788 The pointer guard used for pointer mangling was not
|
||
initialized for static applications resulting in the security feature
|
||
being disabled. The pointer guard is now correctly initialized to a
|
||
random value for static applications. Existing static applications need
|
||
to be recompiled to take advantage of the fix (bug 15754).
|
||
|
||
* CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
|
||
to the d_name member of struct dirent, or omit the terminating NUL
|
||
character. (Bugzilla #14699).
|
||
|
||
* CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
|
||
aligned_alloc functions could allocate too few bytes or corrupt the
|
||
heap when passed very large allocation size values (Bugzilla #15855,
|
||
#15856, #15857).
|
||
|
||
* CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
|
||
for AF_INET6 has been fixed (Bugzilla #16072).
|
||
|
||
* New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
|
||
pap_CW, quz_PE, the_NP.
|
||
|
||
* Substantially revised locales: gd_GB, ht_HT
|
||
|
||
* The LC_ADDRESS field was updated to support country_car for almost all
|
||
supported locales.
|
||
|
||
* ISO 1427 definitions were updated.
|
||
|
||
* ISO 3166 definitions were updated.
|
||
|
||
* The localedef utility now supports --big-endian and --little-endian
|
||
command-line options to generate locales for a different system from that
|
||
for which the C library was built.
|
||
|
||
* Binary locale files now only depend on the endianness of the system for
|
||
which they are generated and not on other properties of that system. As a
|
||
consequence, binary files generated with new localedef may be incompatible
|
||
with old versions of the GNU C Library, and binary files generated with
|
||
old localedef may be incompatible with this version of the GNU C Library,
|
||
in the following circumstances:
|
||
|
||
+ Locale files may be incompatible on m68k systems.
|
||
|
||
+ Locale archive files (but not separate files for individual locales) may
|
||
be incompatible on systems where plain "char" is signed.
|
||
|
||
* The configure option --disable-versioning has been removed. Builds with
|
||
--disable-versioning had not worked for several years.
|
||
|
||
* ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
|
||
cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
|
||
|
||
* SystemTap probes for malloc have been introduced.
|
||
|
||
* SystemTap probes for slow multiple precision fallback paths of
|
||
transcendental functions have been introduced.
|
||
|
||
* Support for powerpc64le has been added.
|
||
|
||
* The soft-float powerpc port now supports e500 processors.
|
||
|
||
* Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
|
||
|
||
* A new feature test macro _DEFAULT_SOURCE is available to enable the same
|
||
set of header declarations that are enabled by default, even when other
|
||
feature test macros or compiler options such as -std=c99 would otherwise
|
||
disable some of those declarations.
|
||
|
||
* The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
|
||
conflict with POSIX. The libbsd-compat library (which was a dummy library
|
||
that did nothing) has also been removed.
|
||
|
||
* Preliminary documentation about Multi-Thread, Async-Signal and
|
||
Async-Cancel Safety has been added.
|
||
|
||
* Change of ABI data structures for s390 and s390x:
|
||
On s390 and s390x the size of struct ucontext and jmp_buf was increased to
|
||
allow for future hardware extensions. All library functions that accept or
|
||
return these structures were versioned in order to provide backwards
|
||
compatibility with existing code. However, not all cases can be handled
|
||
with interface versioning. If an application embeds either structure into
|
||
another structure and that structure is passed to another compilation unit
|
||
which expects the newer larger-sized object then any access to the new
|
||
fields will result in undefined behaviour. Similarly any access to fields
|
||
that were moved by the enlarging of the structures will cause undefined
|
||
behaviour. To fix the undefined behaviour all objects that are part of the
|
||
final in-memory image must agree on the size of structures, and this may
|
||
require recompilation.
|
||
|
||
Version 2.18
|
||
|
||
* The following bugs are resolved with this release:
|
||
|
||
2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
|
||
11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
|
||
14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
|
||
14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14941,
|
||
14952, 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003,
|
||
15006, 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062,
|
||
15078, 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234,
|
||
15283, 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335,
|
||
15336, 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381,
|
||
15394, 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424,
|
||
15426, 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485,
|
||
15488, 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577,
|
||
15583, 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711,
|
||
15755, 15759.
|
||
|
||
* CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
|
||
has been fixed by disabling the use of pt_chown (Bugzilla #15755).
|
||
Distributions can re-enable building and using pt_chown via the new configure
|
||
option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
|
||
considerable security risks and should only be used if the distribution
|
||
understands and accepts the risks.
|
||
|
||
* CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
|
||
#15078).
|
||
|
||
* CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
|
||
fixed (Bugzilla #15330).
|
||
|
||
* Add support for calling C++11 thread_local object destructors on thread
|
||
and program exit. This needs compiler support for offloading C++11
|
||
destructor calls to glibc.
|
||
|
||
* Improved worst case performance of libm functions with double inputs and
|
||
output.
|
||
|
||
* Support for priority inherited mutexes in pthread condition variables on
|
||
non-x86 architectures.
|
||
|
||
* Port to Xilinx MicroBlaze contributed by David Holsgrove.
|
||
|
||
* Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
|
||
|
||
* Optimized string functions for ARM. Implemented by Will Newton and
|
||
Richard Henderson.
|
||
|
||
* Optimized libm functions for SPARC. Implemented by David S. Miller.
|
||
|
||
* Support for building more of ARM glibc as Thumb-2 code. Implemented by
|
||
Richard Henderson.
|
||
|
||
* Support for building most of MIPS glibc as MIPS16 code. Implemented by
|
||
Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
|
||
|
||
* Added a benchmark framework to track performance of functions in glibc.
|
||
|
||
* New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
|
||
It is based on draft TS 18661 and currently enabled as a GNU extension.
|
||
|
||
* On Linux, the clock function now uses the clock_gettime system call
|
||
for improved precision, rather than old times system call.
|
||
|
||
* Added support for version-3 tz format files. This is needed when using
|
||
the tz database release 2013e or later, and affects a few unusual cases --
|
||
currently only TZ='America/Godthab' for time stamps after 2037.
|
||
|
||
* Added new API functions pthread_getattr_default_np and
|
||
pthread_setattr_default_np to get and set the default pthread
|
||
attributes of a process.
|
||
|
||
* Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
|
||
This may improve lock scaling of existing programs on TSX capable systems.
|
||
When the --enable-lock-elision=yes parameter is specified at configure
|
||
time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
|
||
mutexes.
|
||
|
||
* Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
|
||
availability). Implemented by Ryan S. Arnold.
|
||
|
||
* Support added for POWER8 platform. Implemented by Ryan S. Arnold.
|
||
|
||
Version 2.17
|
||
|
||
* The following bugs are resolved with this release:
|
||
|
||
1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
|
||
9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
|
||
11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
|
||
13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
|
||
13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
|
||
14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
|
||
14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
|
||
14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
|
||
14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
|
||
14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
|
||
14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
|
||
14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
|
||
14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
|
||
14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
|
||
14879, 14889, 14893, 14898, 14914.
|
||
|
||
* Optimization of memcpy for MIPS.
|
||
|
||
* CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
|
||
EMFILE has been fixed (Bugzilla #14889).
|
||
|
||
* The add-on ports collection is now distributed in the "ports" subdirectory
|
||
of the main GNU C Library distribution, rather than separately.
|
||
|
||
* Port to ARM AArch64 contributed by Linaro.
|
||
|
||
* Support for STT_GNU_IFUNC symbols added for s390 and s390x.
|
||
Optimized versions of memcpy, memset, and memcmp added for System z10 and
|
||
zEnterprise z196.
|
||
Implemented by Andreas Krebbel.
|
||
|
||
* The new function secure_getenv allows secure access to the environment,
|
||
returning NULL if running in a SUID/SGID process. This function replaces
|
||
the internal function __secure_getenv.
|
||
|
||
* SystemTap static probes have been added into the dynamic linker.
|
||
Implemented by Gary Benson.
|
||
|
||
* Optimizations of string functions strstr, strcasestr and memmem.
|
||
Implemented by Maxim Kuvyrkov.
|
||
|
||
* The minimum Linux kernel version that this version of the GNU C Library
|
||
can be used with is 2.6.16.
|
||
|
||
* Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
|
||
powerpc POWER7. Implemented by Will Schmidt.
|
||
|
||
* New configure option --disable-nscd builds the C library such that it
|
||
never attempts to contact the Name Service Caching Daemon (nscd).
|
||
New configure option --disable-build-nscd avoids building nscd itself;
|
||
this is the default if --disable-nscd is used.
|
||
|
||
* Improved support for cross-compilation, including cross-testing and
|
||
bootstrap builds without a previously built glibc.
|
||
|
||
* Several testsuite tests are now able to test multiple IFUNC variants of an
|
||
interface, rather than just testing the one that would be chooen by
|
||
default.
|
||
|
||
* New configure options --with-bugurl and --with-pkgversion, for
|
||
distributors to use to embed their bug-reporting and package version
|
||
information in --help and --version output.
|
||
|
||
* The ttyname and ttyname_r functions on Linux now fall back to searching for
|
||
the tty file descriptor in /dev/pts or /dev if /proc is not available. This
|
||
allows creation of chroots without the procfs mounted on /proc.
|
||
|
||
* The `crypt' function now fails if passed salt bytes that violate the
|
||
specification for those values. On Linux, the `crypt' function will
|
||
consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
|
||
enabled, and fail on encrypted strings using the MD5 or DES algorithm
|
||
when the mode is enabled.
|
||
|
||
* The `clock_*' suite of functions (declared in <time.h>) is now available
|
||
directly in the main C library. Previously it was necessary to link with
|
||
-lrt to use these functions. This change has the effect that a
|
||
single-threaded program that uses a function such as `clock_gettime' (and
|
||
is not linked with -lrt) will no longer implicitly load the pthreads
|
||
library at runtime and so will not suffer the overheads associated with
|
||
multi-thread support in other code such as the C++ runtime library.
|
||
|
||
* New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
|
||
sat_IN, and szl_PL.
|
||
|
||
Version 2.16
|
||
|
||
* The following bugs are resolved with this release:
|
||
|
||
174, 208, 350, 369, 411, 706, 766, 2074, 2541, 2547, 2548, 2550, 2551,
|
||
2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678, 3335,
|
||
3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596, 4822,
|
||
5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794, 6884,
|
||
6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135, 10140,
|
||
10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 10882, 11174,
|
||
11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
|
||
12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
|
||
13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
|
||
13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
|
||
13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
|
||
13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
|
||
13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
|
||
13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
|
||
13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
|
||
13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
|
||
13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
|
||
13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
|
||
13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
|
||
14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
|
||
14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
|
||
14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
|
||
14277, 14278.
|
||
|
||
* Support for the x32 ABI on x86-64 added. The x32 target is selected by
|
||
configuring glibc with:
|
||
BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
|
||
Visit <https://sites.google.com/site/x32abi/> for more x32 ABI info.
|
||
Implemented by H.J. Lu.
|
||
|
||
* ISO C11 support:
|
||
|
||
+ define static_assert
|
||
|
||
+ do not declare gets
|
||
|
||
+ declare at_quick_exit and quick_exit also for ISO C11
|
||
|
||
+ aligned_alloc. NB: The code is deliberately allows the size parameter
|
||
to not be a multiple of the alignment. This is a moronic requirement
|
||
in the standard but it is only a requirement on the caller, not the
|
||
implementation.
|
||
|
||
+ timespec_get added
|
||
|
||
+ uchar.h support added
|
||
|
||
+ CMPLX, CMPLXF, CMPLXL added
|
||
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* Support for the IA-64 has been moved to ports.
|
||
|
||
* Remove support for anything but ELF binary format
|
||
|
||
* Checking versions of poll, ppoll added.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* More generic and 64-bit performance optimizations to math functions.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* New configure option --enable-obsolete-rpc makes the deprecated RPC
|
||
headers and functions available at compile time as they were before
|
||
version 2.14. This option will be removed at some time in the future
|
||
after the TI-RPC library becomes fully sufficient for the needs of
|
||
existing applications.
|
||
|
||
* Compatibility code for Linux kernel versions before 2.4 has been removed.
|
||
Note that glibc is not expected to work with any Linux kernel version
|
||
before 2.6.
|
||
|
||
* New header <sys/auxv.h> and function getauxval allowing easy access to
|
||
the AT_* key-value pairs passed from the Linux kernel. The header also
|
||
defines the HWCAP_* bits associated with the AT_HWCAP key.
|
||
|
||
* New locales: mag_IN
|
||
|
||
* New configure option --enable-systemtap builds SystemTap static probes
|
||
into libc for setjmp and longjmp and into libpthread for various operations.
|
||
So far the setjmp/longjmp probes and some of the libpthread probes are
|
||
provided only for i*86 and x86_64.
|
||
Implemented by Roland McGrath and Rayson Ho.
|
||
|
||
* Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
|
||
|
||
* More optimized functions for PowerPC. Implemented by Adhemerval Zanella
|
||
and Will Schmidt.
|
||
|
||
* More optimized functions for SPARC. Implemented by David S. Miller.
|
||
|
||
* Improved support for cross-compilation, especially bootstrap builds
|
||
without a previously built glibc.
|
||
|
||
* Ports for the TILE-Gx and TILEPro families of processors. Contributed by
|
||
Chris Metcalf from Tilera.
|
||
|
||
* Support for the old ARM ABI has been removed from ports. Only the EABI is
|
||
now supported for ARM processors.
|
||
|
||
* The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
|
||
as the name of the dynamic linker, to distinguish it from the
|
||
/lib/ld-linux.so.3 dynamic linker used for the base EABI.
|
||
|
||
* Support for CRIS has been removed from ports.
|
||
|
||
* A new class of installed header has been documented for low-level
|
||
platform-specific functionality. PowerPC added the first instance with a
|
||
function to provide time base register access. Contributed by Tulio
|
||
Magno Quites Machado Filho.
|
||
|
||
* ix86 configurations now install header files that are consistent with
|
||
what x86-64 configurations install. These same header files can be used
|
||
for -m32, -m64, or -mx32 builds.
|
||
Contributed by H.J. Lu.
|
||
|
||
* Math library bug fixes. A thorough audit of all open math library bugs was
|
||
conducted by Joseph Myers. Significant progress was made on many math
|
||
library bugs resulting in more accurate exceptions and function results.
|
||
Many thanks to all those that contributed including Andreas Jaeger for his
|
||
patch review and work on the x87 trigonometric instruction issues.
|
||
|
||
* Timezone data is no longer installed. Timezone-related binaries and scripts
|
||
will continue to be installed. Users should obtain their timezone data from
|
||
their distribution provider or from the tzdata package at
|
||
<ftp://munnari.oz.au/pub/>.
|
||
|
||
Version 2.15
|
||
|
||
* The following bugs are resolved with this release:
|
||
|
||
6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
|
||
12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
|
||
13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
|
||
13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
|
||
13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
|
||
13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
|
||
13484, 13506, 13515, 13523, 13524, 13538, 13540
|
||
|
||
* New program pldd to list loaded object of a process
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* Add nss_db support back to glibc. No more dependency on Berkeley db
|
||
and support for initgroups lookups.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
|
||
Contributed by HJ Lu.
|
||
|
||
* Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
|
||
Contributed by HJ Lu.
|
||
|
||
* Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
|
||
on x86-32 and x86-64.
|
||
Contributed by Liubov Dmitrieva.
|
||
|
||
* Optimized strchr and strrchr for SSE on x86-32.
|
||
Contributed by Liubov Dmitrieva.
|
||
|
||
* Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
|
||
for x86-64 and x86-32.
|
||
Contributed by Liubov Dmitrieva.
|
||
|
||
* New interfaces: scandirat, scandirat64
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* nscd now also caches the netgroup database.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* Integrate libm with gcc's -ffinite-math-only option.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* Lots of generic, 64-bit, and x86-64-specific performance optimizations
|
||
to math functions. Implemented by Ulrich Drepper.
|
||
|
||
* Optimized strcasecmp and strncasecmp for AVX on x86-64.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* New Linux interfaces: process_vm_readv, process_vm_writev
|
||
|
||
* Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* Optimized nearbyint and strcasecmp for PPC.
|
||
Implemented by Adhemerval Zanella.
|
||
|
||
* New locales: bho_IN, unm_US, es_CU, ta_LK
|
||
|
||
Version 2.14
|
||
|
||
* The following bugs are resolved with this release:
|
||
|
||
386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
|
||
11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
|
||
11781, 11799, 11820, 11837, 11857, 11884, 11892, 11895, 11901, 11945,
|
||
11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
|
||
12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
|
||
12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
|
||
12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
|
||
12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
|
||
12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
|
||
12795, 12811, 12813, 12814, 12841
|
||
|
||
* The RPC implementation in libc is obsoleted. Old programs keep working
|
||
but new programs cannot be linked with the routines in libc anymore.
|
||
Programs in need of RPC functionality must be linked against TI-RPC.
|
||
The TI-RPC implementation is IPv6 enabled and there are other benefits.
|
||
|
||
Visible changes of this change include (obviously) the inability to link
|
||
programs using RPC functions without referencing the TI-RPC library and the
|
||
removal of the RPC headers from the glibc headers.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
|
||
syncfs, setns, sendmmsg
|
||
|
||
* New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
|
||
yue_HK, lij_IT, mhr_RU
|
||
|
||
* New encodings: CP770, CP771, CP772, CP773, CP774
|
||
|
||
* New program sotruss to trace calls through PLTs
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* The malloc hook implementation is marked deprecated and will be removed
|
||
from the default implementation in the next version. The design never
|
||
worked ever since the introduction of threads. Even programs which do
|
||
not create threads themselves can use multiple threads created internally.
|
||
|
||
Version 2.13
|
||
|
||
* The following bugs are resolved with this release:
|
||
|
||
3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
|
||
11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
|
||
12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
|
||
12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
|
||
12378, 12394, 12397
|
||
|
||
* New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
|
||
|
||
* POWER7 optimizations: memset, memcmp, strncmp
|
||
|
||
* New optimized string functions for x86-64: strnlen (SSE2),
|
||
strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
|
||
Implemented by Ulrich Drepper.
|
||
|
||
Version 2.12
|
||
|
||
* The following bugs are resolved with this release:
|
||
|
||
3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
|
||
10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
|
||
11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
|
||
11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
|
||
11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
|
||
11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
|
||
11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
|
||
11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
|
||
|
||
* New interfaces: pthread_getname_np, pthread_setname_np
|
||
|
||
* New Linux interface: recvmmsg
|
||
|
||
* STT_GNU_IFUNC implemented for Sparc by David Miller.
|
||
|
||
* The dynamic linker now recognizes supported ABI versions from the
|
||
EI_ABIVERSION field in the ELF header.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
|
||
will not be used to fill in password fields in the passwd.byname replies.
|
||
Instead it is used to synthesize the shadow.byname table, should it be
|
||
missing. This is a useful mode in some installations involving Solaris.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* New locales: kok_IN, sq_MK, cv_RU
|
||
|
||
Version 2.11
|
||
|
||
* The following bugs are resolved with this release:
|
||
|
||
3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
|
||
10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
|
||
10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
|
||
10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
|
||
10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
|
||
10789, 10817, 10823, 10840, 10847
|
||
|
||
* New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
|
||
mkostemps64
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* Checking version of longjmp added that fails if an uninitialized stack
|
||
frame would be created. Implemented by Ulrich Drepper.
|
||
|
||
* STT_GNU_IFUNC is now supported in static executables.
|
||
Implemented by H.J. Lu.
|
||
|
||
* STT_GNU_IFUNC implemented for PPC by Alan Modra.
|
||
|
||
* New optimized string functions for x86-64: strstr, strcasestr, memcmp,
|
||
strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
|
||
strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
|
||
Contributed by H.J. Lu.
|
||
|
||
strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
|
||
strstr, strcasestr.
|
||
Contributed by H.J. Lu.
|
||
|
||
* Support for fma instruction in AVX on x86-64.
|
||
Implemented by H.J. Lu and Ulrich Drepper.
|
||
|
||
* AVX support in x86-64 auditing support in ld.so.
|
||
Implemented by H.J. Lu.
|
||
|
||
* STB_GNU_UNIQUE support added.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* Implement second fallback mode for optimized DNS lookup for even more
|
||
broken environments. If two requests from the same port are not
|
||
handled correctly close the socket and open a new one before sending
|
||
the second request. The 'single-request-reopen' option in /etc/resolv.conf
|
||
can be used to select this mode right away, instead of rediscovering the
|
||
necessity is every process again.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
|
||
Implemented by Adam Tkac.
|
||
|
||
* Optimized iconv conversions for S390x.
|
||
Implemented by Andreas Krebbel.
|
||
|
||
* Using condvars with PI mutexes is now more efficient due to kernel
|
||
support for requeueing to PI futexes. NPTL support added for x86-64.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* New locales: ps_AF, my_MM
|
||
|
||
Version 2.10
|
||
|
||
* The following bugs are resolved with this release:
|
||
|
||
697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
|
||
9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
|
||
9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
|
||
9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
|
||
10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
|
||
|
||
* New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* New Linux interfaces: accept4, fallocate, fallocate64.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* Correct declarations of string function when used in C++ code. This
|
||
could lead to compile errors for invalid C++ code.
|
||
|
||
* XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
|
||
now in POSIX.
|
||
|
||
* New POSIX 2008 interface: psiginfo
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* New ISO C++1x interfaces: quick_exit, at_quick_exit
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* Support for selecting between multiple function definitions at runtime
|
||
using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
|
||
|
||
* The libcrypt library can now use the hash function implementations in
|
||
NSS. Implemented by Ulrich Drepper.
|
||
|
||
* The malloc implementation can be compiled to be less memory efficient
|
||
but higher performing in multi-threaded programs.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* New locales: nan_TW@latin, ks_IN
|
||
|
||
* Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* Extended printf hook support. It is possible to use user-defined types
|
||
and extend existing format specifiers.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* Handling for group shadow files has been added.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
|
||
servers (the case, e.g., for some people using the built-in DNS
|
||
server in ADSL modems/routers). There is a once-per-process timeout
|
||
in case of a broken server. To avoid it, users can run nscd or put
|
||
'options single-request' in /etc/resolv.conf.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
Version 2.9
|
||
|
||
* The following bugs are resolved with this release:
|
||
|
||
2447, 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447,
|
||
6461, 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712,
|
||
6713, 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839,
|
||
6843, 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955,
|
||
6966, 6968, 6974, 6980, 6995, 7008, 7009, 7029
|
||
|
||
* Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
|
||
up at the same time. Implemented by Ulrich Drepper.
|
||
|
||
* TLS descriptors for LD and GD on x86 and x86-64.
|
||
Implemented by Alexandre Oliva.
|
||
|
||
* getaddrinfo now handles DCCP and UDPlite.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
|
||
htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* New implementation of memmem, strstr, and strcasestr which is O(n).
|
||
Implemented by Eric Blake.
|
||
|
||
* New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
|
||
|
||
* Implement "e" option for popen to open file descriptor with the
|
||
close-on-exec flag set. Implemented by Ulrich Drepper.
|
||
|
||
* Implement "b" mode for fmemopen. In this mode writes writes don't
|
||
implicitly add a NUL byte and seeks from the end of the buffer really
|
||
use the buffer end, not the string length as the basis.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* Many functions, exported and internal, now atomically set the close-on-exec
|
||
flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
|
||
|
||
* Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
|
||
Sinhala)
|
||
Implemented by Pravin Satpute.
|
||
|
||
* New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
|
||
|
||
Version 2.8
|
||
|
||
* The following bugs are resolved with this release:
|
||
|
||
2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
|
||
5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
|
||
5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
|
||
5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
|
||
5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
|
||
5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
|
||
5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
|
||
|
||
* New locales: bo_CN, bo_IN, shs_CA.
|
||
|
||
* New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
|
||
|
||
* Sorting rules for some Indian languages (Devanagari and Gujarati).
|
||
Implemented by Pravin Satpute.
|
||
|
||
* IPV6 addresses in /etc/resolv.conf can now have a scope ID
|
||
|
||
* nscd caches now all timeouts for DNS entries
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* nscd is more efficient and wakes up less often.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
|
||
vdprintf, and obstack_vprintf.
|
||
Implemented by Jakub Jelinek.
|
||
|
||
* Faster memset for x86-64.
|
||
Implemented by Harsha Jagasia and H.J. Lu.
|
||
|
||
* Faster memcpy on x86.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* Faster sqrt and sqrtf implementation for some PPC variants.
|
||
Implemented by Steven Munroe.
|
||
|
||
Version 2.7
|
||
|
||
* The following bugs are resolved with this release:
|
||
|
||
4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
|
||
4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
|
||
4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
|
||
4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
|
||
5071, 5103, 5104, 5112, 5113, 5184, 5186
|
||
|
||
* More checking functions: fread, fread_unlocked, open*, mq_open.
|
||
Implemented by Jakub Jelinek and Ulrich Drepper.
|
||
|
||
* Extend fortification to C++. Implemented by Jakub Jelinek.
|
||
|
||
* Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
|
||
by not recognizing 'a' as a modifier when those specs are requested.
|
||
Implemented by Jakub Jelinek.
|
||
|
||
* PPC optimizations to math and string functions.
|
||
Implemented by Steven Munroe.
|
||
|
||
* New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
|
||
options to be passed. Implemented by Ulrich Drepper.
|
||
|
||
* More CPU set manipulation functions. Implemented by Ulrich Drepper.
|
||
|
||
* New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* Handle private futexes in the NPTL implementation.
|
||
Implemented by Jakub Jelinek and Ulrich Drepper.
|
||
|
||
* Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
|
||
Implemented by Roland McGrath and Ulrich Drepper.
|
||
|
||
* Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
|
||
|
||
* SHA-256 and SHA-512 based password encryption.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
|
||
ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
|
||
yo_NG.
|
||
|
||
+ New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
Version 2.6
|
||
|
||
* The following bugs are resolved with this release:
|
||
|
||
3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
|
||
3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
|
||
3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
|
||
3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
|
||
3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
|
||
4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
|
||
4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
|
||
4702, 4858
|
||
|
||
* New Linux interfaces: epoll_pwait, sched_getcpu.
|
||
|
||
* New generic interfaces: strerror_l.
|
||
|
||
* nscd can now cache the services database. Implemented by Ulrich Drepper.
|
||
|
||
Version 2.5
|
||
|
||
* The following bugs are resolved with this release:
|
||
|
||
39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
|
||
1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
|
||
2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
|
||
2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
|
||
2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
|
||
2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
|
||
2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
|
||
3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
|
||
3225, 3251, 3252, 3253, 3273
|
||
|
||
* For Linux, the sorting of addresses returned by getaddrinfo now also
|
||
handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* New Linux interfaces: splice, tee, sync_file_range, vmsplice.
|
||
|
||
* New iconv module for MIK. Contributed by Alexander Shopov.
|
||
|
||
* For sites with broken group and/or passwd database, the auto-propagate
|
||
option of nscd can prevent creating ID lookup entries from the results
|
||
of a name lookup and vice versa. This usually is no problem but some
|
||
site might have problems with the default behavior.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* Iterating over entire database in NIS can be slow. With the
|
||
SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
|
||
to trade time for memory. The entire database will be read at once.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* The interfaces introduced in RFC 3542 have been implemented by
|
||
Ulrich Drepper.
|
||
|
||
* Support for the new ELF hash table format was added by Ulrich Drepper.
|
||
|
||
* Support for priority inheritance mutexes added by Jakub Jelinek and
|
||
Ulrich Drepper.
|
||
|
||
* Support for priority protected mutexes added by Jakub Jelinek.
|
||
|
||
* New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
|
||
or_IN, csb_PL, fy_NL, sr_ME.
|
||
|
||
Version 2.4
|
||
|
||
* More overflow detection functions.
|
||
|
||
* New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
|
||
IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
|
||
|
||
More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
|
||
IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
|
||
IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
|
||
IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
|
||
IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
|
||
by Masahide Washizawa.
|
||
|
||
* It is now possible to install audit libraries for the dynamic linker using
|
||
LD_AUDIT. Implemented by Ulrich Drepper.
|
||
|
||
* The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
|
||
longer supported. The new NPTL implementation requires Linux 2.6 kernels.
|
||
For a libc and libpthread that works well on Linux 2.4 kernels, we
|
||
recommend using the stable 2.3 branch.
|
||
|
||
* The new function open_wmemstream acts like open_memstream,
|
||
but uses a wchar_t wide character buffer.
|
||
|
||
* The new function ppoll is an improved version of poll, similar to pselect.
|
||
|
||
* New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
|
||
futimesat, faccessat, mkdirat, mkfifoat, mknodat,
|
||
renameat, unlinkat, linkat, symlinkat, readlinkat.
|
||
|
||
* New Linux kernel system calls: unshare,
|
||
inotify_init, inotify_add_watch, inotify_rm_watch.
|
||
|
||
* The euidaccess function is now also known by the alias eaccess,
|
||
for compatibility with some other systems.
|
||
|
||
* Timezone data updated to 2006b version.
|
||
|
||
Version 2.3.6
|
||
|
||
* The following bugs are resolved with this release:
|
||
|
||
38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
|
||
1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
|
||
1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
|
||
1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
|
||
1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
|
||
1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
|
||
|
||
Visit <https://sourceware.org/bugzilla/> for the details of each bug.
|
||
|
||
* As of this release, GCC 4 can be used to compile the C Library.
|
||
|
||
* Timezone data updated to 2005m version.
|
||
|
||
Version 2.3.5
|
||
|
||
* The following bugs are resolved with this release:
|
||
|
||
284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
|
||
722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
|
||
737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
|
||
777, 787, 821, 822, 823, 825
|
||
|
||
Visit <https://sourceware.org/bugzilla/> for the details of each bug.
|
||
|
||
Version 2.3.4
|
||
|
||
* Support for RFC 3678. Real implementations exist only for Linux so far.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* nscd can now cache entries persistently. Expiring entries are reloaded.
|
||
For speedups the cache can be shared in memory with client processes.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* nscd can now perform SELinux checks.
|
||
Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
|
||
|
||
* getaddrinfo queries are now cached. Canonical name lookup is performed
|
||
efficiently.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* The nothrow function attribute is used when headers are used by gcc when
|
||
compiling C code. This can avoid significant amounts of exception
|
||
handling data.
|
||
|
||
* The malloc functions perform more error checking and are stricter when
|
||
it comes to reacting on errors. The default action is to terminate
|
||
the process after showing an error message. Implemented by Ulrich Drepper.
|
||
|
||
* Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
|
||
lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
|
||
|
||
* Namespaces in ld.so are implemented. DSOs can be loaded in separate
|
||
namespaces using the new function dlmopen(). This feature is of course,
|
||
like most other dynamic loading functionality, not available in statically
|
||
linked applications. Implemented by Ulrich Drepper.
|
||
|
||
* Low-overhead boundary checking variants of string and some stdio functions
|
||
were added. These are to be used in conjunction with a gcc patch by
|
||
Jakub Jelinek which adds calls to these functions if possible.
|
||
Implemented by Jakub Jelinek and Ulrich Drepper.
|
||
|
||
* Old code for several operating systems and machine architectures that
|
||
have not been in working condition in a long time have been removed from
|
||
the main source tree maintained by the GNU C Library's maintainers.
|
||
These files are now reside in the separate `ports' source module
|
||
that is usable as an add-on when building the library.
|
||
|
||
Version 2.3.3
|
||
|
||
* New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
|
||
interrogate the dynamic linker, compatible with the Solaris interface.
|
||
|
||
* ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
|
||
implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
|
||
|
||
* getifaddrs now uses the netlink interface on Linux to get its information.
|
||
Implemented by Thorsten Kukuk.
|
||
|
||
* getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
* support for non-executable stacks on x86 has been added. Changes mostly
|
||
by Roland McGrath.
|
||
|
||
* regex is now much faster for multibyte locales. Changes by Jakub Jelinek
|
||
and Ulrich Drepper.
|
||
|
||
* getaddrinfo now performs destination address selection according to
|
||
RFC 3484.
|
||
|
||
Version 2.3.2
|
||
|
||
* Thread-safe interfaces for many functions that access locale data
|
||
were added in version 2.3, but these features were omitted from NEWS.
|
||
Many functions have variants with an `_l' suffix that take a `locale_t'
|
||
object as a parameter rather than consulting the current locale.
|
||
The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
|
||
create and maintain `locale_t' objects. Additionally, the new function
|
||
`uselocale' sets "the current locale" (as used by functions not so
|
||
parameterized) set for an individual thread. These features were added
|
||
in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
|
||
|
||
* The functions getresuid, getresgid, setresuid, and setresgid, which
|
||
have long been available on Linux, are now declared in <unistd.h>
|
||
and are now also available on the Hurd.
|
||
|
||
* ELF thread-local storage support (TLS) now works on x86-64.
|
||
|
||
* The new dynamic string token $LIB is expanded in shared library names.
|
||
This normally expands to lib, but on some 64-bit platforms to lib64 instead.
|
||
|
||
* Aldy Hernandez contributed complete software floating point support for
|
||
PowerPC machines with no FPU.
|
||
|
||
* fexecve is implemented on Linux.
|
||
|
||
* The `btowc' function should work at least twice as fast due to
|
||
specialized callbacks in the iconv modules. Implemented by Bruno Haible.
|
||
|
||
* With appropriate thread add-ons cancelable functions are now implemented
|
||
in libc.so as well. No need to call the function in libpthread. This
|
||
change allowed to finally disable the incorrect and expensive handling
|
||
of weak definition in ld.so.
|
||
|
||
* Yet more PLT entries in libc.so have been removed. We finally arrived
|
||
at the bare minimum. Startup times improved appropriately.
|
||
|
||
* Support for the new Linux/x86 system call interface was added. The
|
||
AT_SYSINFO auxiliary vector entry is recognized and handled.
|
||
|
||
Version 2.3
|
||
|
||
* Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
|
||
charsets.
|
||
|
||
* iconv (the program and the interface) now accepts empty names (excluding
|
||
options like //TRANSLIT) to mean "use charset of current locale".
|
||
|
||
* localedef can now transliterate characters in strings which are not in
|
||
the provided charmap. The information from the input locale is used.
|
||
|
||
* Prelinking support was added for ELF targets. This requires additional
|
||
tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
|
||
|
||
* Read-only stdio streams now use mmap to speed up operation by eliminating
|
||
copying and buffer underflows. To use add 'm' to the mode string of
|
||
the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
|
||
|
||
* The malloc functions were completely rewritten by Wolfram Gloger based
|
||
on Doug Lea's malloc-2.7.0.c.
|
||
|
||
* Isamu Hasegawa contributed a completely new and POSIX-conformant
|
||
implementation of regex.
|
||
|
||
* Bruno Haible upgraded the iconv and locale implementation to support
|
||
Unicode 3.2.
|
||
|
||
* Contents of the LC_* and LANG environment variables in the CEN style are
|
||
not recognized anymore. It never was used. Change by Ulrich Drepper.
|
||
|
||
* The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
|
||
thread-local storage (TLS) ABI on some platforms.
|
||
Changes by Ulrich Drepper. SH support by Kaz Kojima.
|
||
|
||
* Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
|
||
EUC-JISX0213, and TSCII.
|
||
|
||
* New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
|
||
BSD-compatible interface for getting all network interface addresses.
|
||
Implementation for IPv4 by Roland McGrath.
|
||
|
||
* Loading of locale data is faster due to the introduction of a locale
|
||
archive. Implemented by Roland McGrath and Ulrich Drepper.
|
||
|
||
* Startup times are significantly reduced by not using exported functions
|
||
inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
|
||
and Ulrich Drepper.
|
||
|
||
* Steven Munroe contributed a port to PowerPC64/Linux.
|
||
|
||
Version 2.2.6
|
||
|
||
* The Hurd now uses the GNU libio implementation of stdio rather than the
|
||
old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
|
||
|
||
* The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
|
||
with the same behavior as the Linux system call of the same name.
|
||
|
||
Version 2.2.5
|
||
|
||
* Stephen Moshier implemented log2, log10, powl and cbrtl for the
|
||
128-bit long double format.
|
||
|
||
* Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
|
||
IBM1161, and IBM1162 charsets.
|
||
|
||
* Andreas Jaeger contributed a port to x86-64/Linux.
|
||
|
||
* Peter Bruin contributed a port to PowerPC/Hurd.
|
||
|
||
* libc functions using I/O streams now can handle wide-oriented streams
|
||
as well.
|
||
|
||
* optimizations in the dynamic linker. Binaries created by recent binutils
|
||
versions start up quicker due to reduced time spent on relocations.
|
||
|
||
* Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
|
||
|
||
Version 2.2.4
|
||
|
||
* Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
|
||
asinh, atanh, j0 for the 128-bit long double format.
|
||
|
||
* Bruno Haible updated all the code handling Unicode in some form to
|
||
support Unicode 3.1.
|
||
|
||
* Speed of regex for single-byte locales is back to previous levels.
|
||
Patch by Isamu Hasegawa.
|
||
|
||
* Alpha, SPARC, and IA-64 now also using floating stacks.
|
||
|
||
* Startup time of internationalized applications greatly improved through
|
||
iconv cache. Use iconvconfig to generate the cache file.
|
||
Contributed by Ulrich Drepper.
|
||
|
||
* The IA-64 specific part of ld.so was rewritten to eliminate some pretty
|
||
severe performance problems. Patch by David Mosberger.
|
||
|
||
* The Hurd port got a lot more functionality like AIO, various stdio
|
||
extensions, etc. Mainly done by Roland McGrath.
|
||
|
||
* mtrace can now lookup symbols in shared libraries.
|
||
|
||
Version 2.2.3
|
||
|
||
* Intel's IA-64 math library is largely integrated. It provides fast and
|
||
accurate implementatations for most basic and standard math functions
|
||
in float, double, and long double format.
|
||
|
||
* Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
|
||
and asin for the 96-bit long double format and asin, log, tan for the
|
||
128-bit long double format.
|
||
|
||
* The beginning of a last-bit accurate math library by IBM Haifa were added.
|
||
The basic double functions exist today. Contributed by Abraham Ziv
|
||
<ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
|
||
<ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
|
||
|
||
* An asynchronous name lookup library was added. The interface is designed
|
||
after POSIX AIO. The proposal was circulated beforehand to get comments.
|
||
No negative ones came in. Implemented by Ulrich Drepper.
|
||
|
||
* Port to S390/64bit contributed by Martin Schwidefsky
|
||
<schwidefsky@de.ibm.com>.
|
||
|
||
* David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
|
||
of functions for Linux/IA-64.
|
||
|
||
* The RPC code is now thread safe. Threads can now use the same service
|
||
of different services at the same time. Patch by Eric Norum
|
||
<eric.norum@usask.ca> with some help by Ulrich Drepper.
|
||
|
||
* Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
|
||
family of functions for Linux/S390.
|
||
|
||
* Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
|
||
of functions for Linux/x86.
|
||
|
||
* Port to Linux/CRIS contributed by Axis Communications.
|
||
|
||
Version 2.2.2
|
||
|
||
* Lots of headers were cleaned up. Using the tool in the conform/ subdir
|
||
we can now check for namespace violations and missing declarations. The
|
||
result is that almost all headers are now Unix-compliant (as defined in
|
||
the upcoming XPG6). The negative side is that some programs might need
|
||
corrections, too, if they depend on the incorrect form of the headers in
|
||
previous versions which defined too many symbols and included too many
|
||
other headers.
|
||
|
||
* regex now handles multibyte character sets correctly.
|
||
Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
|
||
|
||
* iconv (the program) does now conform to the upcoming XPG6 and handles
|
||
charmaps. Instead of the charset names the path of charmaps can be
|
||
provided and the conversion happens based on this data.
|
||
Contributed by Ulrich Drepper.
|
||
|
||
* The locale program now provides detailed information about the installed
|
||
locales. While
|
||
|
||
locale -a
|
||
|
||
only lists the names of the supported locales
|
||
|
||
locale -a --verbose
|
||
|
||
provides details such as country, language, and codeset name.
|
||
Contributed by Ulrich Drepper.
|
||
|
||
Version 2.2.1
|
||
|
||
* The gencat program now parses the input file according to the charset
|
||
selected by the LC_CTYPE category. This is important for stateful
|
||
character sets. To make generating catalogs easier there is a way
|
||
to overwrite the charset selected by the locale: before the first
|
||
message or $ quote line the catalog can contain a line like
|
||
|
||
$ codeset=ISO-8859-2
|
||
|
||
to select the charset (ISO-8859-2 in this case).
|
||
|
||
Implemented by Shinya Hanataka and Ulrich Drepper.
|
||
|
||
* New codeset conversion modules: IBM-922 (Estonia PC codeset),
|
||
IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
|
||
Contributed by Masahide Washizawa <washi@jp.ibm.com>.
|
||
|
||
* Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
|
||
<rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
|
||
|
||
* The LANGUAGE environment variable is now ignored unless the locale is
|
||
changed from the default "C" locale.
|
||
|
||
* The usual bug fixes.
|
||
|
||
Version 2.2
|
||
|
||
* Greg McGary added runtime support for bounds checking using gcc's
|
||
new -fbounded-pointers option. ix86 target is complete. PowerPC
|
||
is in progress.
|
||
|
||
* Thorsten Kukuk added secure mode support to nscd.
|
||
|
||
* The Berkeley db libraries have been removed.
|
||
|
||
Related, the nss_db module is now in a separate package since it
|
||
obviously requires a database library being available.
|
||
|
||
* Wide character I/O streams implemented by Ulrich Drepper.
|
||
|
||
* Functions from the extended socket API added by Ulrich Drepper.
|
||
|
||
* Functions feenableexcept and fedisableexcept to control the
|
||
behaviour of individual exceptions have been added by Andreas Jaeger.
|
||
|
||
* ldconfig program added by Andreas Jaeger and Jakub Jelinek.
|
||
|
||
* The resolver code has been updated from bind 8.2.3-T5B which supports
|
||
threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
|
||
and Mark Kettenis.
|
||
|
||
This change could in some situations effect backward compatibility. Since
|
||
now `_res' is a thread-local instead of a global variable, modifying it
|
||
in one thread does not have any effect in other threads.
|
||
|
||
The resolver library was also extended to allow IPv6 as the transport
|
||
protocol for the requests. This work was done by Stig Venaas.
|
||
|
||
* Compatibility code for K&R C compilers has been removed from the
|
||
header files. A ISO C compiler is needed to use the library
|
||
(conforming to either C89 or C99 standard).
|
||
|
||
* Complete rewrite of the localedef program to support multibyte character
|
||
sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
|
||
strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
|
||
Implemented by Ulrich Drepper.
|
||
|
||
Bruno Haible significantly improved the generation and use of the data
|
||
structures for the wide character tables.
|
||
|
||
* Plural handling in gettext implemented by Ulrich Drepper.
|
||
|
||
* The utmp daemon has been removed.
|
||
|
||
* The port to MIPS-Linux has been finished by Andreas Jaeger.
|
||
|
||
* A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
|
||
and Yutaka Niibe.
|
||
|
||
* POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
|
||
|
||
* POSIX barriers implemented by Kaz Kylheku.
|
||
|
||
* POSIX spawn function family implemented by Ulrich Drepper.
|
||
|
||
* POSIX spinlocks are now available.
|
||
|
||
* Timed wait functions for mutex, rwlock, and semaphores are implemented.
|
||
|
||
* the configure option --enable-kernel=X.Y.Z allows to strip out
|
||
compatibility for kernel versions before X.Y.Z. This is currently only
|
||
implemented for Linux.
|
||
|
||
* the sockaddr_in6 structure changed. The IPv6 working group added a new
|
||
field sin6_scope_id. This means that all programs using IPv6 should be
|
||
recompiled. Don't expect binary compatibility with previous glibc
|
||
versions.
|
||
|
||
* various conversion modules for IBM character sets contributed by
|
||
Masahide Washizawa.
|
||
|
||
* IA-64 port by Jes Sorensen and HJ Lu.
|
||
|
||
Version 2.1.3
|
||
|
||
* bug fixes
|
||
|
||
|
||
Version 2.1.2
|
||
|
||
* bug fixes
|
||
|
||
|
||
Version 2.1.1
|
||
|
||
* New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
|
||
|
||
* New xdr functions are added; some rpc functions are now 64bit clean.
|
||
|
||
* Fixed a number of bugs and memory leaks (especially in NIS+ code).
|
||
|
||
* Fixed known incompatibilities with glibc 2.0.
|
||
|
||
* New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
|
||
|
||
* Optimized a number of functions (especially the ELF dynamic loader).
|
||
|
||
* Update timezone data files.
|
||
|
||
* lots of charmaps corrections
|
||
|
||
* some new locale definitions and charmaps
|
||
|
||
|
||
Version 2.1
|
||
|
||
* Richard Henderson corrected size of struct timeval on Linux/Alpha to
|
||
conform to POSIX member type requirements. Symbol versions have been
|
||
adjusted as needed within the library, and for direct use by applications,
|
||
but there is potential for problems if third-party libraries use
|
||
struct timeval as part of their interface. This does not present
|
||
a problem for X and other "essential" system libraries.
|
||
|
||
* An additional locale model to support C++ Standard Library locale
|
||
model and probably more was implemented by Ulrich Drepper.
|
||
|
||
* Eric Youngdale and Ulrich Drepper implemented versioning of objects on
|
||
symbol level.
|
||
|
||
* Miles Bader provided the `argp' function family to support hierarchical
|
||
command line argument parsing, layered on top of getopt.
|
||
|
||
* strtod accepts new hexadecimal floating-point format from ISO C 9X.
|
||
|
||
* printf has two new specifiers %a and %A to print hexadecimal flaoting-point
|
||
numbers.
|
||
|
||
* scanf recognizes the %a and %A format for scanning floating point numbers.
|
||
|
||
* the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
|
||
information and interfaces for the available integer types.
|
||
|
||
* about 130 new math functions were added to implement the ISO C9x math
|
||
library.
|
||
|
||
* the new header <complex.h> contains definitions of the complex math
|
||
functions from ISO C 9X.
|
||
|
||
* the new header <tgmath.h> defines generic macros to use complex or
|
||
real valued functions.
|
||
|
||
* Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
|
||
|
||
* Andreas Jaeger provided a test suite for the math library.
|
||
|
||
* Mark Kettenis implemented the utmpx interface and an utmp daemon.
|
||
|
||
* Ulrich Drepper added character set conversion functions (iconv).
|
||
|
||
* Optimized string functions have been added.
|
||
|
||
* The localedata addon is now part of glibc.
|
||
|
||
* An implementation of profiling shared libraries was added by Ulrich Drepper.
|
||
|
||
* Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
|
||
daemon for NSS (nscd).
|
||
|
||
Missing a better place here are some numbers on improvements. Under
|
||
Linux 2.1.125 un-tar-ing the kernel sources takes
|
||
|
||
user system wall
|
||
|
||
using local files 12.19s 6.88s 22.91s
|
||
|
||
using NIS 13.92s 8.91s 26.34s
|
||
|
||
using NIS & nscd 10.37s 7.34s 25.30s
|
||
|
||
using NIS+ 27.57s 30.37s 640.46s
|
||
|
||
using NIS+ & nscd 10.25s 7.83s 26.51s
|
||
|
||
using NIS & old nscd [1] 13.83s 8.32s 29.60s
|
||
|
||
Keep in mind that non-namelookup related operations dominate above times.
|
||
It was just a common complain that using NIS+ unpacking the kernel is
|
||
horribly slow.
|
||
|
||
[1] The old nscd implementation is not available anymore since it was
|
||
distributed with glibc up to version 2.0.98 and thus is now replaced.
|
||
|
||
* Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
|
||
|
||
* Mark Kettenis provided a Hesiod NSS module.
|
||
|
||
* The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
|
||
and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
|
||
|
||
* rcmd can now handle netgroups (Dick Streefland).
|
||
|
||
* A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
|
||
Bambrough.
|
||
|
||
* Support for the IPv6 protocol has been added to the socket API, as per the
|
||
latest draft standards.
|
||
|
||
* Support for Linux 2.2 has been added.
|
||
|
||
* Interface changes relative to the latest 2.0.x release:
|
||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||
addseverity NEW: Unix98
|
||
alphasort64 NEW: LFS
|
||
argp_err_exit_status NEW: argp, GNU ext
|
||
argp_error NEW: argp, GNU ext
|
||
argp_failure NEW: argp, GNU ext
|
||
argp_help NEW: argp, GNU ext
|
||
argp_parse NEW: argp, GNU ext
|
||
argp_program_bug_address NEW: argp, GNU ext
|
||
argp_program_version NEW: argp, GNU ext
|
||
argp_program_version_hook NEW: argp, GNU ext
|
||
argp_state_help NEW: argp, GNU ext
|
||
argp_usage NEW: argp, GNU ext
|
||
authdes_create NEW: Secure RPC
|
||
authdes_getucred NEW: Secure RPC
|
||
authdes_pk_create NEW: Secure RPC
|
||
backtrace NEW: GNU ext.
|
||
backtrace_symbols NEW: GNU ext.
|
||
backtrace_symbols_fd NEW: GNU ext.
|
||
cacos NEW: ISO C 9x
|
||
cacosf NEW: ISO C 9x
|
||
cacosh NEW: ISO C 9x
|
||
cacoshf NEW: ISO C 9x
|
||
cacoshl NEW: ISO C 9x
|
||
cacosl NEW: ISO C 9x
|
||
capget NEW: kernel
|
||
capset NEW: kernel
|
||
carg NEW: ISO C 9x
|
||
cargf NEW: ISO C 9x
|
||
cargl NEW: ISO C 9x
|
||
casin NEW: ISO C 9x
|
||
casinf NEW: ISO C 9x
|
||
casinh NEW: ISO C 9x
|
||
casinhf NEW: ISO C 9x
|
||
casinhl NEW: ISO C 9x
|
||
casinl NEW: ISO C 9x
|
||
catan NEW: ISO C 9x
|
||
catanf NEW: ISO C 9x
|
||
catanh NEW: ISO C 9x
|
||
catanhf NEW: ISO C 9x
|
||
catanhl NEW: ISO C 9x
|
||
catanl NEW: ISO C 9x
|
||
cbc_crypt NEW: Secure RPC
|
||
ccos NEW: ISO C 9x
|
||
ccosf NEW: ISO C 9x
|
||
ccosh NEW: ISO C 9x
|
||
ccoshf NEW: ISO C 9x
|
||
ccoshl NEW: ISO C 9x
|
||
ccosl NEW: ISO C 9x
|
||
cexp NEW: ISO C 9x
|
||
cexpf NEW: ISO C 9x
|
||
cexpl NEW: ISO C 9x
|
||
cimag NEW: ISO C 9x
|
||
cimagf NEW: ISO C 9x
|
||
cimagl NEW: ISO C 9x
|
||
clearerr_locked REMOVED
|
||
clntunix_create NEW: sunrpc ext
|
||
clog NEW: ISO C 9x
|
||
clog10 NEW: ISO C 9x
|
||
clog10f NEW: ISO C 9x
|
||
clog10l NEW: ISO C 9x
|
||
clogf NEW: ISO C 9x
|
||
clogl NEW: ISO C 9x
|
||
conj NEW: ISO C 9x
|
||
conjf NEW: ISO C 9x
|
||
conjl NEW: ISO C 9x
|
||
cpow NEW: ISO C 9x
|
||
cpowf NEW: ISO C 9x
|
||
cpowl NEW: ISO C 9x
|
||
cproj NEW: ISO C 9x
|
||
cprojf NEW: ISO C 9x
|
||
cprojl NEW: ISO C 9x
|
||
creal NEW: ISO C 9x
|
||
crealf NEW: ISO C 9x
|
||
creall NEW: ISO C 9x
|
||
creat64 NEW: LFS
|
||
csin NEW: ISO C 9x
|
||
csinf NEW: ISO C 9x
|
||
csinh NEW: ISO C 9x
|
||
csinhf NEW: ISO C 9x
|
||
csinhl NEW: ISO C 9x
|
||
csinl NEW: ISO C 9x
|
||
csqrt NEW: ISO C 9x
|
||
csqrtf NEW: ISO C 9x
|
||
csqrtl NEW: ISO C 9x
|
||
ctan NEW: ISO C 9x
|
||
ctanf NEW: ISO C 9x
|
||
ctanh NEW: ISO C 9x
|
||
ctanhf NEW: ISO C 9x
|
||
ctanhl NEW: ISO C 9x
|
||
ctanl NEW: ISO C 9x
|
||
des_setparity NEW: Secure RPC
|
||
ecb_crypt NEW: Secure RPC
|
||
endutxent NEW: Unix98
|
||
exp10 NEW: ISO C 9x
|
||
exp10f NEW: ISO C 9x
|
||
exp10l NEW: ISO C 9x
|
||
exp2 NEW: ISO C 9x
|
||
exp2f NEW: ISO C 9x
|
||
exp2l NEW: ISO C 9x
|
||
fattach NEW: STREAMS
|
||
fdetach NEW: STREAMS
|
||
fdim NEW: ISO C 9x
|
||
fdimf NEW: ISO C 9x
|
||
fdiml NEW: ISO C 9x
|
||
feclearexcept NEW: ISO C 9x
|
||
fegetenv NEW: ISO C 9x
|
||
fegetexceptflag NEW: ISO C 9x
|
||
fegetround NEW: ISO C 9x
|
||
feholdexcept NEW: ISO C 9x
|
||
feof_locked REMOVED
|
||
feraiseexcept NEW: ISO C 9x
|
||
ferror_locked REMOVED
|
||
fesetenv NEW: ISO C 9x
|
||
fesetexceptflag NEW: ISO C 9x
|
||
fesetround NEW: ISO C 9x
|
||
fetestexcept NEW: ISO C 9x
|
||
feupdateenv NEW: ISO C 9x
|
||
fflush_locked REMOVED
|
||
ffsl NEW: GNU ext.
|
||
ffsll NEW: GNU ext.
|
||
fgetpos64 NEW: LFS
|
||
fgets_unlocked NEW: GNU ext.
|
||
fileno_locked REMOVED
|
||
fma NEW: ISO C 9x
|
||
fmaf NEW: ISO C 9x
|
||
fmal NEW: ISO C 9x
|
||
fmax NEW: ISO C 9x
|
||
fmaxf NEW: ISO C 9x
|
||
fmaxl NEW: ISO C 9x
|
||
fmin NEW: ISO C 9x
|
||
fminf NEW: ISO C 9x
|
||
fminl NEW: ISO C 9x
|
||
fmtmsg NEW: Unix98
|
||
fopen64 NEW: LFS
|
||
fputc_locked REMOVED
|
||
fputs_unlocked NEW: GNU ext.
|
||
fread_unlocked NEW: GNU ext.
|
||
freopen64 NEW: LFS
|
||
fseeko NEW: Unix98
|
||
fsetpos64 NEW: LFS
|
||
fstatfs64 NEW: LFS
|
||
fstatvfs NEW: Unix98
|
||
fstatvfs64 NEW: LFS
|
||
ftello NEW: Unix98
|
||
ftello64 NEW: LFS
|
||
ftruncate64 NEW: LFS
|
||
ftw64 NEW: LFS
|
||
fwrite_unlocked NEW: GNU ext.
|
||
gai_strerror NEW: IPv6
|
||
gamma_r REMOVED
|
||
gammaf_r REMOVED
|
||
gammal_r REMOVED
|
||
getchar_locked REMOVED
|
||
getdate NEW: Unix98
|
||
getdate_err NEW: Unix98
|
||
getdate_r NEW: GNU ext.
|
||
getmsg NEW: STREAMS
|
||
getnameinfo NEW: IPv6
|
||
getnetname NEW: Secure RPC
|
||
getpmsg NEW: STREAMS
|
||
getpt NEW: Unix98 PTY
|
||
getrlimit64 NEW: LFS
|
||
getutxent NEW: Unix98
|
||
getutxid NEW: Unix98
|
||
getutxline NEW: Unix98
|
||
glob64 NEW: GNU ext.
|
||
globfree64 NEW: GNU ext.
|
||
gnu_get_libc_release NEW: GNU ext.
|
||
gnu_get_libc_version NEW: GNU ext.
|
||
grantpt NEW: Unix98 PTY
|
||
host2netname NEW: Secure RPC
|
||
iconv NEW: iconv
|
||
iconv_close NEW: iconv
|
||
iconv_open NEW: iconv
|
||
if_freenameindex NEW: IPv6
|
||
if_indextoname NEW: IPv6
|
||
if_nameindex NEW: IPv6
|
||
if_nametoindex NEW: IPv6
|
||
in6addr_any NEW: IPv6
|
||
in6addr_loopback NEW: IPv6
|
||
inet6_isipv4mapped NEW: IPv6
|
||
isastream NEW: STREAMS
|
||
iswblank NEW: GNU ext.
|
||
key_decryptsession NEW: Secure RPC
|
||
key_decryptsession_pk NEW: Secure RPC
|
||
key_encryptsession NEW: Secure RPC
|
||
key_encryptsession_pk NEW: Secure RPC
|
||
key_gendes NEW: Secure RPC
|
||
key_get_conv NEW: Secure RPC
|
||
key_secretkey_is_set NEW: Secure RPC
|
||
key_setnet NEW: Secure RPC
|
||
key_setsecret NEW: Secure RPC
|
||
llrint NEW: ISO C 9x
|
||
llrintf NEW: ISO C 9x
|
||
llrintl NEW: ISO C 9x
|
||
llround NEW: ISO C 9x
|
||
llroundf NEW: ISO C 9x
|
||
llroundl NEW: ISO C 9x
|
||
log2 NEW: ISO C 9x
|
||
log2f NEW: ISO C 9x
|
||
log2l NEW: ISO C 9x
|
||
lrint NEW: ISO C 9x
|
||
lrintf NEW: ISO C 9x
|
||
lrintl NEW: ISO C 9x
|
||
lround NEW: ISO C 9x
|
||
lroundf NEW: ISO C 9x
|
||
lroundl NEW: ISO C 9x
|
||
lseek64 NEW: LFS
|
||
makecontext NEW: Unix98
|
||
mempcpy NEW: GNU ext.
|
||
mmap64 NEW: LFS
|
||
moncontrol REMOVED
|
||
modify_ldt NEW: kernel
|
||
nan NEW: ISO C 9x
|
||
nanf NEW: ISO C 9x
|
||
nanl NEW: ISO C 9x
|
||
nearbyint NEW: ISO C 9x
|
||
nearbyintf NEW: ISO C 9x
|
||
nearbyintl NEW: ISO C 9x
|
||
netname2host NEW: Secure RPC
|
||
netname2user NEW: Secure RPC
|
||
nexttoward NEW: ISO C 9x
|
||
nexttowardf NEW: ISO C 9x
|
||
nexttowardl NEW: ISO C 9x
|
||
nftw NEW: Unix98
|
||
nftw64 NEW: LFS
|
||
open64 NEW: LFS
|
||
passwd2des NEW: Secure RPC
|
||
pow10 NEW: GNU ext.
|
||
pow10f NEW: GNU ext.
|
||
pow10l NEW: GNU ext.
|
||
pread NEW: Unix98
|
||
pread64 NEW: LFS
|
||
printf_size NEW: GNU ext.
|
||
printf_size_info NEW: GNU ext.
|
||
profil_counter REMOVED
|
||
pthread_mutexattr_getkind_np REPLACED
|
||
pthread_mutexattr_setkind_np REPLACED
|
||
ptsname NEW: Unix98 PTY
|
||
ptsname_r NEW: Unix98 PTY
|
||
putc_locked REMOVED
|
||
putchar_locked REMOVED
|
||
putgrent NEW: GNU ext.
|
||
putmsg NEW: STREAMS
|
||
putpmsg NEW: STREAMS
|
||
pututxline NEW: Unix98
|
||
pwrite NEW: Unix98
|
||
pwrite64 NEW: LFS
|
||
readdir64 NEW: LFS
|
||
readdir64_r NEW: LFS
|
||
remquo NEW: ISO C 9x
|
||
remquof NEW: ISO C 9x
|
||
remquol NEW: ISO C 9x
|
||
round NEW: ISO C 9x
|
||
roundf NEW: ISO C 9x
|
||
roundl NEW: ISO C 9x
|
||
rtime NEW: GNU ext.
|
||
scalbln NEW: ISO C 9x
|
||
scalblnf NEW: ISO C 9x
|
||
scalblnl NEW: ISO C 9x
|
||
scandir64 NEW: LFS
|
||
sendfile NEW: kernel
|
||
setcontext NEW: Unix98
|
||
setrlimit64 NEW: LFS
|
||
setutxent NEW: Unix98
|
||
sighold NEW: Unix98
|
||
sigignore NEW: Unix98
|
||
sigqueue NEW: POSIX.1b
|
||
sigrelse NEW: Unix98
|
||
sigset NEW: POSIX.1b
|
||
sigtimedwait NEW: POSIX.1b
|
||
sigwaitinfo NEW: POSIX.1b
|
||
sincos NEW: GNU ext.
|
||
sincosf NEW: GNU ext.
|
||
sincosl NEW: GNU ext.
|
||
statfs64 NEW: LFS
|
||
statvfs NEW: Unix98
|
||
statvfs64 NEW: LFS
|
||
strcasestr NEW: GNU ext.
|
||
strtoimax NEW: ISO C 9x
|
||
strtoumax NEW: ISO C 9x
|
||
strverscmp NEW: GNU ext.
|
||
svcauthdes_stats NEW: Secure RPC
|
||
svcunix_create NEW: sunrpc etx
|
||
svcunixfd_create NEW: sunrpc ext
|
||
swapcontext NEW: Unix98
|
||
tcgetsid NEW: Unix98 PTY
|
||
tdestroy NEW: GNU ext.
|
||
tgamma NEW: ISO C 9x
|
||
tgammaf NEW: ISO C 9x
|
||
tgammal NEW: ISO C 9x
|
||
tmpfile64 NEW: LFS
|
||
trunc NEW: ISO C 9x
|
||
truncate64 NEW: LFS
|
||
truncf NEW: ISO C 9x
|
||
truncl NEW: ISO C 9x
|
||
umount2 NEW: kernel
|
||
unlockpt NEW: Unix98 PTY
|
||
updwtmpx NEW: Unix98
|
||
user2netname NEW: Secure RPC
|
||
utmpxname NEW: Unix98
|
||
versionsort NEW: GNU ext.
|
||
versionsort64 NEW: GNU ext.
|
||
waitid NEW: Unix98
|
||
wcscasecmp NEW: GNU ext.
|
||
wcsncasecmp NEW: GNU ext.
|
||
wcsnlen NEW: GNU ext.
|
||
wcstoimax NEW: ISO C 9x
|
||
wcstoll NEW: ISO C 9x
|
||
wcstoull NEW: ISO C 9x
|
||
wcstoumax NEW: ISO C 9x
|
||
wcswcs NEW: Unix98
|
||
wordexp NEW: POSIX.2
|
||
wordfree NEW: POSIX.2
|
||
write_profiling REMOVED
|
||
xdecrypt NEW: Secure RPC
|
||
xdr_authdes_cred NEW: Secure RPC
|
||
xdr_authdes_verf NEW: Secure RPC
|
||
xdr_cryptkeyarg NEW: Secure RPC
|
||
xdr_cryptkeyarg2 NEW: Secure RPC
|
||
xdr_cryptkeyres NEW: Secure RPC
|
||
xdr_getcredres NEW: Secure RPC
|
||
xdr_key_netstarg NEW: Secure RPC
|
||
xdr_key_netstres NEW: Secure RPC
|
||
xdr_keybuf NEW: Secure RPC
|
||
xdr_keystatus NEW: Secure RPC
|
||
xdr_netnamestr NEW: Secure RPC
|
||
xdr_sizeof NEW: Secure RPC
|
||
xdr_unixcred NEW: sunrpc ext
|
||
xencrypt NEW: Secure RPC
|
||
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
|
||
|
||
Version 2.0.6
|
||
|
||
* more bug fixes
|
||
|
||
|
||
Version 2.0.5
|
||
|
||
* more bug fixes
|
||
|
||
* inet_ntoa is thread-safe
|
||
|
||
* updwtmp is moved from libutil to libc
|
||
|
||
* rewrite of cbrt function
|
||
|
||
* update of timezone data
|
||
|
||
Version 2.0.4
|
||
|
||
* more bug fixes
|
||
|
||
Version 2.0.3
|
||
|
||
* more bug fixes
|
||
|
||
Version 2.0.2
|
||
|
||
* more bug fixes
|
||
|
||
* add atoll function
|
||
|
||
* fix complex problems in Berkeley DB code
|
||
|
||
* fix math functions
|
||
|
||
Version 2.0.1
|
||
|
||
* fixed lots of header problems (especially Linux/GNU specific)
|
||
|
||
* dynamic loader preserves all registers
|
||
|
||
* Roland McGrath provided support for handling of auxiliary objects in
|
||
the ELF dynamic loader.
|
||
|
||
* support for parallel builds is improved
|
||
|
||
Version 2.0
|
||
|
||
* GNU extensions are no longer declared by default. To enable them you
|
||
must define the macro `_GNU_SOURCE' in your program or compile with
|
||
`-D_GNU_SOURCE'.
|
||
|
||
* The library has changed from using GNU ld symbol aliases to using weak
|
||
symbols where available. The ELF object file format supports weak
|
||
symbols; GNU ld also supports weak symbols in the a.out format. (There
|
||
is also now support for other GNU ld extensions in ELF. Use the
|
||
`--with-elf' option to configure to indicate you have ELF, and
|
||
`--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
|
||
of many files which contained only symbol aliases, reducing the size of
|
||
the source and the compiled library; many other files were renamed to
|
||
less cryptic names previously occupied by the symbol alias files.
|
||
There is a new header file <elf.h> for programs which operate on
|
||
files in the ELF format.
|
||
|
||
* Converted to Autoconf version 2, so `configure' has more options.
|
||
Run `configure --help' to see the details.
|
||
|
||
* The library can now be configured to build profiling, highly-optimized
|
||
(but undebuggable), and/or shared libraries (ELF with GNU ld only). The
|
||
`--enable-profile', `--enable-omitfp', and `--enable-shared' options to
|
||
`configure' enable building these extra libraries. The shared library is
|
||
built by default when using both ELF and GNU ld. When shared libraries
|
||
are enabled, the new library `-ldl' is available for arbitrary run-time
|
||
loading of shared objects; its interface is defined in <dlfcn.h>. The
|
||
new header file <link.h> gives access to the internals of the run-time
|
||
dynamic linker, `ld.so'. The shell script `ldd' is similar to the
|
||
application of same name on other systems and it provides information
|
||
about dynamically linked binaries.
|
||
|
||
* The C library now provides the run-time support code for profiling
|
||
executables compiled with `-pg'. Programs can control the profiling code
|
||
through the interface in <sys/gmon.h>. The `gmon.out' files written by
|
||
the GNU C library can be read only by GNU `gprof' (from GNU binutils);
|
||
the support for this file format was contributed by David Mosberger-Tang.
|
||
|
||
* The math code has been replaced with a math library based on fdlibm from
|
||
Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
|
||
Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
|
||
functions. The math functions now reside in a separate library, so
|
||
programs using them will need to use `-lm' their linking commands.
|
||
|
||
* John C. Bowman contributed optimized ix87 assembler inline functions.
|
||
|
||
* Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
|
||
mechanism similar to that found in Solaris 2. This is now used for the
|
||
group, passwd, hosts, networks, services, protocols, rpc, ethers,
|
||
shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
|
||
file controls what services are used for each individual database. This
|
||
works by loading shared libraries with names specified in `nsswitch.conf',
|
||
so service modules can be changed or added at any time without even
|
||
relinking any program. Currently there are the file, db, and NIS based
|
||
NSS services available.
|
||
|
||
* The new functions `strtoq' and `strtouq' parse integer values from
|
||
strings, like `strtol' and `strtoul', but they return `long long int' and
|
||
`unsigned long long int' values, respectively (64-bit quantities).
|
||
|
||
* The new functions `strtof' and `strtold' parse floating-point values from
|
||
strings, like `strtod', but they return `float' and `long double' values,
|
||
respectively (on some machines `double' and `long double' are the same).
|
||
|
||
* Ulrich Drepper has contributed new implementations of the floating-point
|
||
printing and reading code used in the `printf' family of functions and
|
||
`strtod', `strtof', and `strtold'. These new functions are perfectly
|
||
accurate, and much faster than the old ones.
|
||
|
||
* The implementation of the POSIX locale model was completely rewritten by
|
||
Ulrich Drepper. This includes the new programs `localedef' and `locale'
|
||
to compile the POSIX locale definition.
|
||
|
||
* The former dummy implementations of the strcoll and strxfrm function are
|
||
now replaced by fully functional code contributed by Ulrich Drepper. The
|
||
collation information comes from the POSIX locale definitions.
|
||
|
||
* The new header <langinfo.h> defines an interface for accessing
|
||
various locale-dependent data (using the locale chosen with `setlocale').
|
||
|
||
* Ulrich Drepper has contributed a new suite of functions for operation on
|
||
wide-character and multibyte-character strings, in <wchar.h>;
|
||
and classification and case conversion of wide characters, in <wctype.h>.
|
||
These new functions are conforming to the ISO C, Amendment 1 specification.
|
||
|
||
* There is now a second implementation of the standard I/O library available.
|
||
It comes from GNU libg++ as was written by Per Bothner, heavily modified
|
||
by Hongjiu Lu and made thread safe by Ulrich Drepper.
|
||
|
||
* You can now use positional parameter specifications in format strings
|
||
for the `printf' and `scanf' families of functions. For example,
|
||
`printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
|
||
``Number 6, Mr Jones''. This is mainly useful when providing different
|
||
format strings for different languages, whose grammars may dictate
|
||
different orderings of the values being printed. To support this
|
||
feature, the interface for `register_printf_handler' has changed; see
|
||
the header file <printf.h> for details.
|
||
|
||
* The `printf' and `scanf' families of functions now understand a new
|
||
formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
|
||
to group numbers as indicated by the locale; for `scanf' and friends, this
|
||
says to accept as valid only a number with all the proper grouping
|
||
separators in the right places. In the default "C" locale, numbers are
|
||
not grouped; but locales for specific countries will define the usual
|
||
conventions (i.e. separate thousands with `,' in the US locale).
|
||
|
||
* The pgrp functions have been regularized, slightly incompatibly but much
|
||
less confusingly. The core functions are now `getpgid' and `setpgid',
|
||
which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
|
||
argument) and BSD `setpgrp' (identical to `setpgid') functions are
|
||
provided for compatibility. There is no longer an incompatible `getpgrp'
|
||
with an argument declared under _BSD_SOURCE; no BSD code uses it.
|
||
|
||
* The new header file <fts.h> and suite of functions simplify programs that
|
||
operate on directory trees. This code comes from 4.4 BSD.
|
||
|
||
* The resolver code has been updated from the BIND 4.9.5-P1 release.
|
||
Parts of the code were heavily modified by Ulrich Drepper to fit in the
|
||
NSS scheme used in glibc.
|
||
|
||
* There is a new malloc debugging hook `__memalign_hook'.
|
||
|
||
* There are new typedefs `ushort' for `unsigned short int' and `uint' for
|
||
`unsigned int' in <sys/types.h>. These are for compatibility only and
|
||
their use is discouraged.
|
||
|
||
* The `-lmcheck' library to enable standard malloc debugging hooks is now
|
||
done differently, so that it works even without GNU ld.
|
||
|
||
* New function `euidaccess' checks allowed access to a file like `access',
|
||
but using the effective IDs instead of the real IDs.
|
||
|
||
* The time zone data files have been updated for the latest and greatest
|
||
local time conventions of the countries of the world.
|
||
|
||
* The new function `dirfd' extracts the file descriptor used by a DIR stream;
|
||
see <dirent.h>.
|
||
|
||
* The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
|
||
for formatting floating-point numbers. They are provided only for
|
||
compatibility; new programs should use `sprintf' instead. There are
|
||
also equivalent function for the `long double' floating-point type and
|
||
all functions also exist in a reentrant form.
|
||
|
||
* The new auxiliary library `-lutil' from 4.4 BSD contains various
|
||
functions for maintaining the login-record files (primarily of use to
|
||
system programs such as `login'), and convenient functions for
|
||
allocating and initializing a pseudo-terminal (pty) device.
|
||
|
||
* Ulrich Drepper has contributed new support for System V style
|
||
shared memory and IPC on systems that support it.
|
||
|
||
* Ulrich Drepper has contributed several miscellaneous new functions found
|
||
in System V: The `hsearch' family of functions provide an effective
|
||
implementation of hash tables; `a64l' and `l64a' provide a very simple
|
||
binary to ASCII mapping; `drand48' and friends provide a 48-bit random
|
||
number generator.
|
||
|
||
* Ulrich Drepper has contributed new reentrant counterparts for the
|
||
`random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
|
||
|
||
* Ulrich Drepper has contributed new, highly-optimized versions of several
|
||
string functions for the i486/Pentium family of processors.
|
||
|
||
* Ulrich Drepper has updated the Linux-specific code, based largely
|
||
on work done in Hongjiu Lu's version of GNU libc for Linux.
|
||
The GNU library now supports Linux versions 2.0.10 and later,
|
||
using the ELF object file format (i[3456]86-*-linux).
|
||
|
||
* Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
|
||
|
||
* David Mosberger-Tang and Richard Henderson have ported the C library
|
||
to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
|
||
dynamic linking support for ELF/Alpha.
|
||
|
||
* Richard Henderson contributed several Alpha optimized assembler function
|
||
for arithmetic and string handling.
|
||
|
||
* Ulrich Drepper has contributed a new set of message catalog functions to
|
||
support multiple languages using the <libintl.h> interface, for use with
|
||
his new package GNU gettext. Translation volunteers have contributed
|
||
catalogs of the library's messages in Spanish, German, and Korean.
|
||
|
||
* For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
|
||
program and the `catgets' function for reading the catalog files it
|
||
creates. (The <libintl.h> interface is preferred; we include the
|
||
<nl_types.h> interface using `catgets' only for source compatibility with
|
||
programs already written to use it.)
|
||
|
||
* New header file <values.h> gives SVID-compatible names for <limits.h>
|
||
constants.
|
||
|
||
* Various new macros, declarations, and small header files for compatibility
|
||
with 4.4 BSD.
|
||
|
||
* New function `group_member' is a convenient way to check if a process has
|
||
a given effective group ID.
|
||
|
||
* When using GCC 2.7 and later, the socket functions are now declared in a
|
||
special way so that passing an argument of type `struct sockaddr_in *',
|
||
`struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
|
||
`struct sockaddr *' type, does not generate a type-clash warning.
|
||
|
||
* New function `error' declared in header file <error.h> is a convenient
|
||
function for printing error messages and optionally exiting; this is the
|
||
canonical function used in GNU programs. The new functions `err', `warn',
|
||
and friends in header file <err.h> are the canonical 4.4 BSD interface for
|
||
doing the same thing.
|
||
|
||
* The <glob.h> interface has several new flags from 4.4 BSD that extend the
|
||
POSIX.2 `glob' function to do ~ and {...} expansion.
|
||
|
||
* New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
|
||
`clearenv' which is used in POSIX.9 is also available.
|
||
|
||
* New function `getsid' returns session ID number on systems that support it.
|
||
|
||
* We have incorporated the 4.4 BSD `db' library (version 1.85). New header
|
||
files <db.h> and <mpool.h> provide a rich set of functions for several
|
||
types of simple databases stored in memory and in files, and <ndbm.h> is
|
||
an old `ndbm'-compatible interface using the `db' functions. Link with
|
||
`-ldb' to get these functions.
|
||
|
||
* New macro `strdupa' copies a string like `strdup', but uses local stack
|
||
space from `alloca' instead of dynamic heap space from `malloc'.
|
||
|
||
* New function `strnlen' is like `strlen' but searches only a given maximum
|
||
number of characters for the null terminator. `stpncpy', `strndup' and
|
||
`strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
|
||
function.
|
||
|
||
* New function `statfs' in header <sys/statfs.h>.
|
||
|
||
* The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
|
||
provide convenient functions for operating on blocks of null-terminated
|
||
strings.
|
||
|
||
* A new suite of functions in <utmp.h> handle all the details of reading
|
||
and writing the utmp file.
|
||
|
||
* An implementation of the NIS/YP(tm) based NSS service was contributed by
|
||
Thorsten Kukuk.
|
||
|
||
* Paul Eggert and Ulrich Drepper modified the `strftime' function to be
|
||
completely POSIX compliant and also implemented the extended functionality
|
||
to handle alternate digit representation and alternate era date formats.
|
||
|
||
* Ulrich Drepper provided an implementation of the `strptime' function
|
||
defined in XPG4.2 which transforms a string into a `struct tm' value.
|
||
|
||
* Paul Eggert provided the tzselect shell script as part of the timezone
|
||
code. The shell script makes it easy to select the correct timezone
|
||
specification.
|
||
|
||
* The implementation of the malloc family of functions is completely replaced
|
||
by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
|
||
The implementation uses the mmap function (if available) and it is
|
||
optimized for the use in multi threaded programs.
|
||
|
||
* Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
|
||
functions. This new functionality is usable by specifying a special
|
||
salt string and it is compatible with implementation on *BSD systems.
|
||
|
||
* Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
|
||
`getsubopt' to handle second level command line options, `bsd_signal'
|
||
to access BSD style `signal' functionality, the obsolete `regexp' style
|
||
expression matcher.
|
||
|
||
* the `lchown' function is available on system which support this
|
||
functionality.
|
||
|
||
* The implementation of the shadow password handling function was contributed
|
||
by Ulrich Drepper.
|
||
|
||
* David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
|
||
|
||
* POSIX.1g support was added. The <sys/select.h> header is available,
|
||
`isfdtype' and `pselect' are implemented. Craig Metz contributed an
|
||
implementation of `getaddrinfo'.
|
||
|
||
Version 1.09
|
||
|
||
* For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
|
||
|
||
* New header file <fstab.h> and new functions `getfsspec', `getfsent' and
|
||
friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
|
||
|
||
* The new function `daemon' from 4.4 BSD is useful for server programs that
|
||
want to put themselves in the background.
|
||
|
||
* Joel Sherrill has contributed support for several standalone boards that
|
||
run without an operating system.
|
||
|
||
* `printf', `scanf' and friends now accept a `q' type modifier for long
|
||
long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
|
||
|
||
* All of the code taken from BSD (notably most of the math and networking
|
||
routines) has been updated from the BSD 4.4-Lite release.
|
||
|
||
* The resolver code has been updated from the BIND-4.9.3-BETA9 release.
|
||
|
||
* The new functions `getdomainname' and `setdomainname' fetch or change the
|
||
YP/NIS domain name. These are system calls which exist on systems which
|
||
have YP (aka NIS).
|
||
|
||
* The time zone data files have been updated for the latest international
|
||
conventions.
|
||
|
||
* The SunRPC programs `portmap' and `rpcinfo' are now installed in
|
||
$(sbindir) (usually /usr/local/sbin) instead of $(bindir).
|
||
|
||
Version 1.08
|
||
|
||
* The C library now includes support for Sun RPC, from Sun's free
|
||
RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
|
||
are included. (There is still no support for YP.)
|
||
|
||
* Tom Quinn has contributed a port of the C library to SGI machines running
|
||
Irix 4 (mips-sgi-irix4).
|
||
|
||
* The new `lockf' function is a simplified interface to the locking
|
||
facilities of `fcntl', included for compatibility.
|
||
|
||
* New time functions `timegm', `timelocal', and `dysize' for compatibility.
|
||
|
||
* New header file <sys/timeb.h> and new function `ftime' for compatibility.
|
||
|
||
* New header files <poll.h> and <sys/poll.h> and new function `poll' for
|
||
compatibility.
|
||
|
||
* The error message printed by `assert' for a failed assertion now includes
|
||
the name of the program (if using GNU ld) and the name of the calling
|
||
function (with versions of GCC that support this).
|
||
|
||
* The `psignal' function is now declared in <signal.h>, not <stdio.h>.
|
||
|
||
* The library now includes the <sys/mman.h> header file and memory
|
||
management functions `mmap', `munmap', `mprotect', `msync', and
|
||
`madvise', on systems that support those facilities.
|
||
|
||
* The interface for `mcheck' has changed slightly: the function called to
|
||
abort the program when an allocation inconsistency is detected now takes
|
||
an argument that indicates the type of failure. The new function
|
||
`mprobe' lets you request a consistency check for a particular block at
|
||
any time (checks are normally done only when you call `free' or `realloc'
|
||
on a block).
|
||
|
||
* It is now possible to easily cross-compile the C library, building on one
|
||
system a library to run on another machine and/or operating system. All
|
||
you need to do is set the variable `HOST_CC' in `configparms' to the
|
||
native compiler for programs to run on the machine you are building on (a
|
||
few generator programs are used on Unix systems); set `CC' to the
|
||
cross-compiler.
|
||
|
||
* The new function `fexecve' (only implemented on the GNU system) executes
|
||
a program file given a file descriptor already open on the file.
|
||
|
||
Version 1.07
|
||
|
||
* Brendan Kehoe has contributed most of a port to the DEC Alpha
|
||
running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
|
||
|
||
* You can set the variable `libprefix' in `configparms' to specify a prefix
|
||
to be prepended to installed library files; this makes it easy to install
|
||
the GNU C library to be linked as `-lgnuc' or whatever.
|
||
|
||
* The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
|
||
copies a limited number of characters from a string, and returns the
|
||
address of the last character written.
|
||
|
||
* You no longer need to check for whether the installed `stddef.h' is
|
||
compatible with the GNU C library. configure now checks for you.
|
||
|
||
* You can now define a per-stream `fileno' function to convert the
|
||
stream's cookie into an integral file descriptor.
|
||
|
||
* ``malloc (0)'' no longer returns a null pointer. Instead, it
|
||
allocates zero bytes of storage, and returns a unique pointer which
|
||
you can pass to `realloc' or `free'. The behavior is undefined if
|
||
you dereference this pointer.
|
||
|
||
* The C library now runs on Sony NEWS m68k machines running either
|
||
NewsOS 3 or NewsOS 4.
|
||
|
||
* The new `syscall' function is a system-dependent primitive function
|
||
for invoking system calls. It has the canonical behavior on Unix
|
||
systems, including unreliable return values for some calls (such as
|
||
`pipe', `fork' and `getppid').
|
||
|
||
* The error code `EWOULDBLOCK' is now obsolete; it is always defined
|
||
to `EAGAIN', which is the preferred name. On systems whose kernels
|
||
use two distinct codes, the C library now translates EWOULDBLOCK to
|
||
EAGAIN in every system call function.
|
||
|
||
Version 1.06
|
||
|
||
* The GNU C Library Reference Manual is now distributed with the library.
|
||
`make dvi' will produce a DVI file of the printed manual.
|
||
`make info' will produce Info files that you can read on line using C-h i
|
||
in Emacs or the `info' program.
|
||
Please send comments on the manual to bug-glibc-manual@gnu.org.
|
||
|
||
* The library now supports SVR4 on i386s (i386-unknown-sysv4).
|
||
|
||
* Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
|
||
|
||
* Jason Merrill has contributed a port to the Sequent Symmetry running
|
||
Dynix version 3 (i386-sequent-dynix).
|
||
|
||
* The library has been ported to i386s running SCO 3.2.4 (also known as SCO
|
||
ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
|
||
|
||
* New function `memory_warnings' lets you arrange to get warnings when
|
||
malloc is running out of memory to allocate, like Emacs gives you.
|
||
|
||
* The C library now contains the relocating allocator used in Emacs 19 for
|
||
its editing buffers. This allocator (ralloc) minimizes allocation
|
||
overhead and fragmentation by moving allocated regions around whenever it
|
||
needs to. You always refer to a ralloc'd region with a "handle" (a
|
||
pointer to a pointer--an object of type `void **').
|
||
|
||
* There is a new `printf' format: `%m' gives you the string corresponding
|
||
to the error code in `errno'.
|
||
|
||
* In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
|
||
or `%[' conversion, but instead of filling in a fixed-sized buffer you
|
||
pass, the `a' modifier says to fill in a `char **' you pass with a
|
||
malloc'd string.
|
||
|
||
* The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
|
||
`FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
|
||
name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
|
||
|
||
* `mkstemp' is a traditional Unix function to atomically create and open a
|
||
uniquely-named temporary file.
|
||
|
||
Version 1.05
|
||
|
||
* The standard location for the file that says what the local timezone is
|
||
has changed again. It is now `/usr/local/etc/localtime' (or more
|
||
precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
|
||
|
||
* The distribution no longer contains any files with names longer than 14
|
||
characters.
|
||
|
||
* `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
|
||
These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
|
||
|
||
* New functions `ttyslot' and `syslog' from 4.4 BSD.
|
||
|
||
Version 1.04
|
||
|
||
* The configuration process has changed quite a bit. The `configure'
|
||
script is now used just like the configuration scripts for other GNU
|
||
packages. The `sysdeps' directory hierarchy is much rearranged.
|
||
The file `INSTALL' explains the new scheme in detail.
|
||
|
||
* The header files no longer need to be processed into ANSI C and
|
||
traditional C versions. There is just one set of files to install, and
|
||
it will work with ANSI or old C compilers (including `gcc -traditional').
|
||
|
||
* Brendan Kehoe and Ian Lance Taylor have ported the library to the
|
||
MIPS DECStation running Ultrix 4.
|
||
|
||
* The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
|
||
Tom Quinn contributed the initial code. The GNU C library can NOT yet be
|
||
made itself into a shared library.
|
||
|
||
* Yet further improved support for the i386, running 4.3 BSD-like systems
|
||
(such as Mach 3 with the Unix single-server), or System V.
|
||
|
||
* New function `strncasecmp' to do case-insensitive string comparison
|
||
with limited length.
|
||
|
||
* New function `strsep' is a reentrant alternative to `strtok'.
|
||
|
||
* New functions `scandir' and `alphasort' for searching directories.
|
||
|
||
* New function `setenv' is a better interface to `putenv'.
|
||
|
||
* Ian Lance Taylor has contributed an implementation of the SVID `ftw'
|
||
function for traversing a directory tree.
|
||
|
||
* The GNU obstack package is now also part of the C library.
|
||
The new function `open_obstack_stream' creates a stdio stream that
|
||
writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
|
||
formatted output directly to an obstack.
|
||
|
||
* Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
|
||
cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
|
||
|
||
* `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
|
||
|
||
* The new functions `strfry' and `memfrob' do mysterious and wonderful
|
||
things to your strings.
|
||
|
||
* There are some new test programs: test-fseek, testmb, and testrand.
|
||
|
||
* Some work has been done to begin porting the library to 4.4 BSD and Linux.
|
||
These ports are not finished, but are a good starting place for really
|
||
supporting those systems.
|
||
|
||
* `/etc/localtime' is now the standard location for the file that says what
|
||
the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
|
||
This follows the general principle that `/etc' is the place for all local
|
||
configuration files.
|
||
|
||
* The C library header files now use `extern "C"' when used by the C++
|
||
compiler, so the C library should now work with C++ code.
|
||
|
||
* The header file <bstring.h> is gone. <string.h> now declares bcopy,
|
||
bcmp, bzero, and ffs. (Update: nowadays these functions are declared
|
||
in <strings.h>.)
|
||
|
||
* Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
|
||
function which uses the `merge sort' algorithm, and is said to be
|
||
significantly faster than the old GNU `qsort' function. Merge sort is
|
||
now the standard `qsort' function. The new algorithm can require a lot
|
||
of temporary storage; so, the old sorting function is called when the
|
||
required storage is not available.
|
||
|
||
* The C library now includes Michael Glad's Ultra Fast Crypt, which
|
||
provides the Unix `crypt' function, plus some other entry points.
|
||
|
||
* The code and header files taken from 4.4 BSD have been updated with the
|
||
latest files released from Berkeley.
|
||
|
||
----------------------------------------------------------------------
|
||
Copying conditions:
|
||
|
||
Permission is granted to anyone to make or distribute verbatim copies
|
||
of this document as received, in any medium, provided that the
|
||
copyright notice and this permission notice are preserved,
|
||
thus giving the recipient permission to redistribute in turn.
|
||
|
||
Permission is granted to distribute modified versions
|
||
of this document, or of portions of it,
|
||
under the above conditions, provided also that they
|
||
carry prominent notices stating who last changed them.
|
||
|
||
Local variables:
|
||
version-control: never
|
||
fill-column: 72
|
||
End:
|