This patch fixes
../sysdeps/mips/__longjmp.c:27:1: warning: function declaration isn't a prototype [-Wstrict-prototypes]
which arose I think from the MIPS16 changes (renaming the function to
____longjmp with an alias __longjmp, so a prior header prototype for
__longjmp no longer sufficed to prevent a warning). I've made the
function use a prototype definition, which is what we want for all
function definitions in glibc anyway.
Tested for MIPS.
* sysdeps/mips/__longjmp.c (____longjmp): Use prototype
definition.
This patch fixes "../sysdeps/nptl/pthread.h:670:26: warning:
initialization discards 'volatile' qualifier from pointer target type"
arising when building nptl/tst-cancel-self-cancelstate.c. The problem
is passing a volatile int * to a macro expecting void *; the patch
adds an explicit cast.
Tested for x86_64.
* nptl/tst-cancel-self-cancelstate.c (do_test): Cast argument of
pthread_cleanup_push to void *.
This patch fixes a warning
../include/features.h:328:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp]
seen when building for ARM. This warning comes from libc-do-syscall.S
being built for nscd: the nscd build uses _FORTIFY_SOURCE, while .S
files aren't built with -O, and the combination produces a warning.
As _FORTIFY_SOURCE doesn't do anything for .S files, undefining it in
libc-do-syscall.S seems the simplest solution.
Tested for ARM.
* sysdeps/unix/sysv/linux/arm/libc-do-syscall.S (_FORTIFY_SOURCE):
Undefine.
This patch fixes bugs in ldbl-128ibm frexpl for 32-bit systems shown
up by warnings:
../sysdeps/ieee754/ldbl-128ibm/s_frexpl.c:82:4: warning: left shift count >= width of type
../sysdeps/ieee754/ldbl-128ibm/s_frexpl.c:129:5: warning: left shift count >= width of type
This did in fact show up in test-ldouble.out (alongside all the other
problems there ... maybe we should again consider running the libm
tests at finer granularity from the makefiles) as already covered by
the testsuite after the previous patch that fixed these bugs for
64-bit systems. The fix is simply using 1LL instead of 1L when
shifting by 52.
Tested for powerpc32 (soft float).
[BZ #16619]
[BZ #16740]
* sysdeps/ieee754/ldbl-128ibm/s_frexpl.c (__frexpl): Use 1LL << 52
instead of 1L << 52.
This patch fixes "set but not used" warnings in the tests
libio/bug-rewind.c and libio/bug-rewind2.c by checking the return
values from fwscanf and making the tests fail if those values aren't
as expected.
Tested for x86_64.
* libio/bug-rewind.c (do_test): Check fwscanf return values.
* libio/bug-rewind2.c (do_test): Likewise.
TEST_IFUNC is only tested in two headers, bench-string.h and
test-string.h, after it gets defined by those headers, and it never
gets undefined.
Thus no defines of TEST_IFUNC are needed, and the *-ifunc.c tests that
just define TEST_IFUNC and include other tests are also redundant, as
is the code to remove $(tests-ifunc) and $(xtests-ifunc) conditionally
from tests and xtests. This patch removes the useless defines and
tests of TEST_IFUNC and the associated useless tests and makefile
code. It thereby fixes a series of warnings
"../string/test-string.h:21:0: warning: "TEST_IFUNC" redefined" where
test-string.h defines TEST_IFUNC to empty, other files define it to 1
and this produces warnings.
Tested for x86_64.
* debug/test-stpcpy_chk-ifunc.c: Remove file.
* debug/test-strcpy_chk-ifunc.c: Likewise.
* wcsmbs/test-wcschr-ifunc.c: Likewise.
* wcsmbs/test-wcscmp-ifunc.c: Likewise.
* wcsmbs/test-wcscpy-ifunc.c: Likewise.
* wcsmbs/test-wcslen-ifunc.c: Likewise.
* wcsmbs/test-wcsrchr-ifunc.c: Likewise.
* wcsmbs/test-wmemcmp-ifunc.c: Likewise.
* Rules [$(multi-arch) = no] (tests): Do not filter out
$(tests-ifunc).
[$(multi-arch) = no] (xtests): Do not filter out $(xtests-ifunc).
* debug/Makefile (tests-ifunc): Remove variable.
(tests): Do not add $(tests-ifunc).
* wcsmbs/Makefile (tests-ifunc): Remove variable.
(tests): Do not add $(tests-ifunc).
* benchtests/bench-string.h (TEST_IFUNC): Remove macro.
[TEST_IFUNC]: Remove conditionals.
* string/test-string.h (TEST_IFUNC): Remove macro.
[TEST_IFUNC]: Remove conditionals.
string/test-strchr.c is used for both wide and narrow string testing,
but produces a series of warnings for wide string testing because of
hardcoded use of narrow characters in the function check1. This patch
fixes that function to use macros abstracting away the wide / narrow
string choice, adding a new such macro to handle the string and
character constants.
Tested for x86_64.
* string/test-strchr.c [!WIDE] (L): New macro.
[WIDE] (L): Likewise.
(check1): Use CHAR instead of char. Use L on string and character
constants.
On powerpc, atomic_exchange_and_add is implemented without any
barriers. This patchs adds the missing instruction and memory barrier
for acquire and release semanthics.
This patch fixes a "set but not used" warning in setjmp/jmpbug.c. A
variable is used only to store the result of alloca. A cast to void
is added to avoid the warning, and the variable is made volatile to
ensure the call to alloca isn't optimized away for being unused.
Tested for x86_64.
* setjmp/jmpbug.c (test): Make foo volatile and cast it to
void.
This patch fixes warnings of the form "tst-printf-round.c:202:17:
warning: passing argument 3 of 'test_hex_in_one_mode' discards 'const'
qualifier from pointer target type", by adding an extra const to that
argument (so that after array-to-pointer conversion it's const char
*const *).
Tested for x86_64.
* stdio-common/tst-printf-round.c (test_hex_in_one_mode): Make
third argument const.
* posix/fnmatch_loop.c (FCT): Use a scalar not a one-item array.
This works around a bug with x86-64 GCC 4.9.2 and earlier
where 'gcc -O2 -Wmaybe-uninitialized' incorrectly complains
"../locale/weightwc.h:93:7: warning: '*((void *)&str+4)' may be
used uninitialized in this function [-Wmaybe-uninitialized]".
This patch fixes a "set but not used" warning in posix/bug-regex31.c.
A variable res stored an indication of whether the test behaved as
expected, but was then ignored and the test returned 0 unconditionally
(as an mtrace test, the auxiliary test for leaks could still have
failed if that bug was present). This patch makes the test return
res.
Tested for x86_64.
* posix/bug-regex31.c (main): Return RES not 0.
perror, an ISO C function, uses fileno, which is not an ISO C
function. This patch makes it use __fileno instead. (The nearby call
to fdopen is not a problem because that's #defined to _IO_new_fdopen.)
Tested for x86_64 (testsuite, and that installed stripped shared
libraries are unchanged by this patch).
[BZ #17633]
* stdio-common/perror.c (perror): Call __fileno instead of fileno.
* conform/Makefile (test-xfail-ISO/stdio.h/linknamespace): Remove
variable.
(test-xfail-ISO99/stdio.h/linknamespace): Likewise.
(test-xfail-ISO11/stdio.h/linknamespace): Likewise.
This change is only useful for the conformance tests since the headers
changed are not installed. The conformance tests fail due to IS_IN
not being defined, so wrap it with a check to make sure that _ISOMAC
is defined.
* include/bits/stdlib-float.h: Use IS_IN only if _ISOMAC is
defined.
* include/mqueue.h: Likewise.
* include/stdlib.h: Likewise.
Ignoring IS_IN_build, which has a different purpose altogether, this
patch removes the last bit of IS_IN_* macro definitions. Now barring
NOT_IN_libc, all cases use the IN_MODULE scheme.
Generated code unchanged on x86_64.
* extra-lib.mk (CPPFLAGS-$(lib)): Remove IS_IN_$(lib).
Replace with IS_IN (ldconfig). No change in generated code.
* elf/Makefile (CFLAGS-ldconfig.c): Remove definition of
IS_IN_ldconfig.
* sysdeps/unix/sysv/linux/x86_64/dl-procinfo.c: Use IS_IN.
* sysdeps/unix/sysv/linux/x86_64/dl-procinfo.h: Likewise.
Replace it with IS_IN (libc) and remove the one place that it
is defined in. The generated code remains unchanged on x86_64.
* include/shlib-compat.h [!NOT_IN_libc]: Remove.
* nss/nss_files/files-parse.c (IS_IN_libc): Replace with
IS_IN (libc).
Make sure that all instances where NOT_IN_libc is defined also defines
IN_MODULE to facilitate removal NOT_IN_libc in future passes.
Verified that the generated code is unchanged on x86_64.
* elf/Makefile (libof-sotruss-lib): Set as extramodules.
Replace with IS_IN and IS_IN_LIB macros instead. This change results
in a change in generated code, because it fixes a subtle bug. The bug
was introduced when systemtap probes were added to lowlevellock.h,
which resulted in stap-probe.h being included in a number of places.
stap-probe.h always defines IN_LIB, which breaks a check in errno.h
and netdb.h since they rely on that macro to decide whether to
implement an internal version of a declaration or an external one.
The components that see a code change due to this are:
iconv_prog
libmemusage.so
libpcprofile.so
libSegFault.so
libutil.so.1
locale
localedef
nscd
All other built components (i.e. libc, libpthread, etc.) remain
unchanged by this on x86_64.
* elf/Makefile (CPPFLAGS-.os): Remove IN_LIB.
* elf/rtld-Rules (rtld-CPPFLAGS): Likewise.
* extra-lib.mk (CPPFLAGS-$(lib)): Likewise.
* include/libc-symbols.h (IS_IN_LIB): New macro.
* include/errno.h: Use IS_IN_LIB instead of IN_LIB.
* include/netdb.h: Likewise.
* include/stap-probe.h: Remove all uses of IN_LIB.
Define MODULE_NAME in the build command and define IN_MODULE using
MODULE_NAME. Verified that the generated code is unchanged on x86_64.
* Makeconfig (module-cppflags-real): Define MODULE_NAME
instead of IN_MODULE.
* include/libc-symbols.h (IN_MODULE): Define using
MODULE_NAME.
(PASTE_NAME, PASTE_NAME1): New macros.
* include/stap-probe.h (LIBC_PROBE_1): Use MODULE_NAME instead
of IN_LIB.
(STAP_PROBE_ASM): Likewise.
dlopening libraries from a static program would dlopen libc.so,
which thus needs its own initialization, done in posixland_init,
which was missing initializing RPCs so far.
ChangeLog:
2014-11-23 Samuel Thibault <samuel.thibault@ens-lyon.org>
* sysdeps/mach/hurd/i386/init-first.c (posixland_init): Call
__mach_init in dlopened libc.
GCC marked OABI obsolete in 4.7 and dropped it in 4.8. So the number
of people this is catching is shrinking every day. At this point,
it's not terribly useful, so just drop it.
This patch reformats the inline-asm in elf_machine_load_address so it is
easier to change only part of the inline-asm. That is using string
concatenating instead of string continuation.
Also document why this inline-asm works - it depends on the 32bit
relocation being resolved at link time.
ChangeLog:
2014-11-21 Will Newton <will.newton@linaro.org>
Andrew Pinski <andrew.pinski@caviumnetworks.com>
* sysdeps/aarch64/dl-machine.h (elf_machine_load_address):
Refactor inline-asm. Also add comment.
Using the macros for ELF types is required for adding ILP32 support.
In the standard AArch64 configuration this makes no difference to
the types used.
ChangeLog:
2014-11-21 Will Newton <will.newton@linaro.org>
Andrew Pinski <andrew.pinski@caviumnetworks.com>
* sysdeps/aarch64/bits/link.h (la_aarch64_gnu_pltenter): Use
ElfW macro instead of hardcoded Elf64 types.
(la_aarch64_gnu_pltenter): Likewise.
* sysdeps/aarch64/dl-machine.h
(elf_machine_runtime_setup): Use ElfW(Addr).
The latest version of the binutils ELF header defines a new set of
dynamic relocations for ILP32 and renames some to make the naming
more uniform.
ChangeLog:
2014-11-21 Will Newton <will.newton@linaro.org>
Andrew Pinski <andrew.pinski@caviumnetworks.com>
* elf/elf.h (R_AARCH64_P32_ABS32, R_AARCH64_P32_COPY,
R_AARCH64_P32_GLOB_DAT, R_AARCH64_P32_JUMP_SLOT,
R_AARCH64_P32_RELATIVE, R_AARCH64_P32_TLS_DTPMOD,
R_AARCH64_P32_TLS_DTPREL, R_AARCH64_P32_TLS_TPREL,
R_AARCH64_P32_TLSDESC, R_AARCH64_P32_IRELATIVE): Define.
(R_AARCH64_TLS_DTPMOD64): Rename to ..
(R_AARCH64_TLS_DTPMOD): This.
(R_AARCH64_TLS_DTPREL64): Rename to ...
(R_AARCH64_TLS_DTPREL): This.
(R_AARCH64_TLS_TPREL64): Rename to ...
(R_AARCH64_TLS_TPREL): This.
* sysdeps/aarch64/dl-machine.h (elf_machine_type_class): Update
R_AARCH64_TLS_DTPMOD64, R_AARCH64_TLS_DTPREL64, and
R_AARCH64_TLS_TPREL64.
(elf_machine_rela): Likewise.
This should only happen if the domain to search is the root,
represented as "." rather than by an empty string. Skipping it here
prevents libc_res_nquerydomain from duplicating the trailing dot,
which would cause the domain name compression to fail.
for ChangeLog
[BZ #16469]
* resolv/res_query.c (__libc_res_nsearch): Skip leading dot in
search domain names.
If we drop it here, we will fail to detect a duplicate trailing dot
later on. Retaining, OTOH, has no ill effects whatsoever, and it even
saves us the trouble of copying the domain name minus the trailing
dot, like we used to do.
for ChangeLog
[BZ #16469]
* NEWS: Update.
* resolv/res_query.c (__libc_res_nquerydomain): Retain
trailing dot.
* posix/tst-getaddrinfo5.c: New.
* posix/Makefile (tests): Add it.
nss_db uses nss_files code for services, but a continue on protocol
mismatch that doesn't affect nss_files skipped the code that advanced
to the next db entry. Any one of these changes would suffice to fix
it, but fixing both makes them both safer to reuse elsewhere.
for ChangeLog
[BZ #14498]
* NEWS: Fixed.
* nss/nss_db/db-XXX.c (_nss_db_get##name##_r): Update hidx
after parsing line but before break_if_match.
* nss/nss_files/files-service (DB_LOOKUP): Don't "continue;"
if there is a protocol mismatch.
for ChangeLog
* sysdeps/posix/ctermid.c (ctermid): Return a pointer to a
string literal if not passed a buffer.
* manual/job.texi (ctermid): Update reasoning, note deviation
from posix, suggest mtasurace when not passed a buffer, for
future non-preliminary safety notes.
for ChangeLog
* manual/Makefile ($(objpfx)stamp-summary): Require
check-safety.sh to pass.
* manual/check-safety.sh: Wish for verification that every
@deftypefn and @deftypefun is followed by a @safety remark.
This sets __HAVE_64B_ATOMICS if provided. It also sets
USE_ATOMIC_COMPILER_BUILTINS to true if the existing atomic ops use the
__atomic* builtins (aarch64, mips partially) or if this has been
tested (x86_64); otherwise, this is set to false so that C11 atomics will
be based on the existing atomic operations.
The function wordexp() fails to properly handle the WRDE_NOCMD
flag when processing arithmetic inputs in the form of "$((... ``))"
where "..." can be anything valid. The backticks in the arithmetic
epxression are evaluated by in a shell even if WRDE_NOCMD forbade
command substitution. This allows an attacker to attempt to pass
dangerous commands via constructs of the above form, and bypass
the WRDE_NOCMD flag. This patch fixes this by checking for WRDE_NOCMD
in exec_comm(), the only place that can execute a shell. All other
checks for WRDE_NOCMD are superfluous and removed.
We expand the testsuite and add 3 new regression tests of roughly
the same form but with a couple of nested levels.
On top of the 3 new tests we add fork validation to the WRDE_NOCMD
testing. If any forks are detected during the execution of a wordexp()
call with WRDE_NOCMD, the test is marked as failed. This is slightly
heuristic since vfork might be used in the future, but it provides a
higher level of assurance that no shells were executed as part of
command substitution with WRDE_NOCMD in effect. In addition it doesn't
require libpthread or libdl, instead we use the public implementation
namespace function __register_atfork (already part of the public ABI
for libpthread).
Tested on x86_64 with no regressions.
Remove libc-modules.h from the tree and auto-generate it from
soversions.i and the list of modules in the built-modules variable
defined in Makeconfig. Macros generated have increasing numbered
values, with built-modules having lower values starting from 1,
following which a separator value LIBS_BEGIN is added and then finally
the library names from soversions.i are appended to the list. This
allows us to conveniently differentiate between the versioned
libraries and other built modules, which is needed in errno.h and
netdb.h to decide whether to use an internal symbol or an external
one.
Verified that generated code remains unchanged on x86_64.
* Makeconfig (built-modules): List non-library modules to be
built.
(module-cppflags): Include libc-modules.h for
everything except shlib-versions.v.i.
(CPPFLAGS): Use it.
(before-compile): Add libc-modules.h.
($(common-objpfx)libc-modules.h,
$(common-objpfx)libc-modules.stmp): New targets.
(common-generated): Add libc-modules.h and libc-modules.stmp.
($(common-objpfx)Versions.v.i): Depend on libc-modules.h.
* include/libc-symbols.h: Don't include libc-modules.h.
* include/libc-modules.h: Remove file.
* scripts/gen-libc-modules.awk: New script to generate
libc-modules.h.
* sysdeps/unix/Makefile ($(common-objpfx)sysd-syscalls):
Depend on libc-modules.stmp.
The current scheme to identify which module a translation unit is
built in depends on defining multiple macros IS_IN_* and also defining
NOT_IN_libc if we're building a non-libc module. In addition, there
is an IN_LIB macro that does effectively the same thing, but for
different modules (notably the systemtap probes). This macro scheme
unifies both ideas to use just one macro IN_MODULE and assign it a
value depending on the module it is being built into. If the module
is not defined, it defaults to MODULE_libc.
Patches that follow will replace uses of IS_IN_* variables with the
IS_IN() macro. libc-symbols.h has been converted already to give an
example of how such a transition will look.
Verified that there are no relevant binary changes. One source change
that will crop up repeatedly is that of nscd_stat, since it uses the
build timestamp as a constant in its logic.
* Makeconfig (in-module): Get value of libof set for the
translation unit.
(CPPFLAGS): Use $(in-module).
* Makerules: Don't suffix routine names for nonlib.
* include/libc-modules.h: New file.
* include/libc-symbols.h: Include libc-modules.h
(IS_IN): New macro to replace IS_IN_* macros.
* elf/Makefile: Set libof-* for each routine.
* elf/rtld-Rules: Likewise.
* extra-modules.mk: Likewise.
* iconv/Makefile: Likewise.
* iconvdata/Makefile: Likewise.
* locale/Makefile: Likewise.
* malloc/Makefile: Likewise.
* nss/Makefile: Likewise.
* sysdeps/gnu/Makefile: Likewise.
* sysdeps/ieee754/ldbl-opt/Makefile: Likewise.
* sysdeps/unix/sysv/linux/Makefile: Likewise.
* sysdeps/s390/s390-64/Makefile: Likewise.
* nscd/Makefile: Set libof-* for each routine. Set CFLAGS and
CPPFLAGS for nscd instead of nonlib.
libm uses symbols mpone and mptwo for internal purposes. This patch
moves them to the implementation namespace (__mpone and __mptwo).
Tested for x86_64 (testsuite, and that installed stripped shared
libraries are unchanged by the patch).
[BZ #17616]
* sysdeps/ieee754/dbl-64/mpa.c (mpone): Rename to __mpone.
(mptwo): Rename to __mptwo.
(__inv): Use __mptwo instead of mptwo.
* sysdeps/ieee754/dbl-64/mpa.h (mpone): Rename to __mpone.
(mptwo): Rename to __mptwo.
* sysdeps/ieee754/dbl-64/mpatan.c (__mpatan): Use __mpone instead
of mpone and __mptwo instead of mptwo.
* sysdeps/ieee754/dbl-64/mpatan2.c (__mpatan2): Use __mpone
instead of mpone.
* sysdeps/ieee754/dbl-64/mpexp.c (__mpexp): Likewise.
* sysdeps/ieee754/dbl-64/mplog.c (__mplog): Likewise.
* sysdeps/ieee754/dbl-64/sincos32.c (__c32): Use __mpone instead
of mpone and __mptwo instead of mptwo.
(__mpranred): Use __mpone instead of mpone.
* conform/Makefile (test-xfail-ISO/math.h/linknamespace): Remove
variable.
(test-xfail-ISO99/complex.h/linknamespace): Likewise.
(test-xfail-ISO99/math.h/linknamespace): Likewise.
(test-xfail-ISO99/tgmath.h/linknamespace): Likewise.
(test-xfail-ISO11/complex.h/linknamespace): Likewise.
(test-xfail-ISO11/math.h/linknamespace): Likewise.
(test-xfail-ISO11/tgmath.h/linknamespace): Likewise.
(test-xfail-XPG3/math.h/linknamespace): Likewise.
(test-xfail-XPG4/math.h/linknamespace): Likewise.
(test-xfail-POSIX/math.h/linknamespace): Likewise.
(test-xfail-UNIX98/math.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/complex.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/math.h/linknamespace): Likewise.
(test-xfail-XOPEN2K/tgmath.h/linknamespace): Likewise.
(test-xfail-POSIX2008/complex.h/linknamespace): Likewise.
(test-xfail-POSIX2008/math.h/linknamespace): Likewise.
(test-xfail-POSIX2008/tgmath.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/complex.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/math.h/linknamespace): Likewise.
(test-xfail-XOPEN2K8/tgmath.h/linknamespace): Likewise.
2014-11-18 Tom de Vries <tom@codesoucery.com>
* manual/signal.texi (Primitives Interrupted by Signals): In section,
replace BSD Handler xref with BSD Signal Handling.
Commit 5c0508a318 broke the Alpha
port, as the extra parenthesis got in the way of some token pasting
that we were doing in a redefined raw unpack macro.
Avoid this situation in the future by not attempting to redefine a
basic macro, but rather work from the outermost public interface.
The compiler does in fact see through the added indirection.
* sysdeps/alpha/soft-fp/local-soft-fp.h (_FP_UNPACK_RAW_2): Remove.
(_FP_PACK_RAW_2): Remove.
(AXP_DECL_RETURN_Q): Rename from FP_DECL_RETURN, use _FP_UNION_Q.
(AXP_RETURN_Q): Rename from FP_RETURN, use _FP_UNION_Q.
(AXP_UNPACK_RAW_Q, AXP_UNPACK_SEMIRAW_Q, AXP_UNPACK_Q): New.
(AXP_PACK_RAW_Q, AXP_PACK_SEMIRAW_Q, AXP_PACK_Q): New.
* sysdeps/alpha/soft-fp/ots_add.c (_OtsAddX): Update to match.
* sysdeps/alpha/soft-fp/ots_cmp.c (internal_equality): Likewise.
* sysdeps/alpha/soft-fp/ots_cmpe.c (internal_compare): Likewise.
* sysdeps/alpha/soft-fp/ots_cvtqux.c (_OtsCvtQUX): Likewise.
* sysdeps/alpha/soft-fp/ots_cvtqx.c (_OtsCvtQX): Likewise.
* sysdeps/alpha/soft-fp/ots_cvttx.c (_OtsConvertFloatTX): Likewise.
* sysdeps/alpha/soft-fp/ots_cvtxq.c (_OtsCvtXQ): Likewise.
* sysdeps/alpha/soft-fp/ots_cvtxt.c (_OtsConvertFloatXT): Likewise.
* sysdeps/alpha/soft-fp/ots_div.c (_OtsDivX): Likewise.
* sysdeps/alpha/soft-fp/ots_mul.c (_OtsMulX): Likewise.
* sysdeps/alpha/soft-fp/ots_nintxq.c (_OtsNintXQ): Likewise.
* sysdeps/alpha/soft-fp/ots_sub.c (_OtsSubX): Likewise.
This patch removes a conditional on __GNUC_PREREQ (4, 6) in x86_64
code.
Tested for x86_64 that installed shared libraries are unchanged by
this patch. Committed (I think this file reasonably comes under math
maintainership).
* sysdeps/x86_64/fpu/dla.h [__FMA4__ && __GNUC_PREREQ (4, 6)]
(DLA_FMS): Make definition conditional only on [__FMA4__].
[__FMA4__ && !__GNUC_PREREQ (4, 6)] (DLA_FMS): Remove conditional
definition.
This patch removes conditionals in ARM code on __GNUC_PREREQ(4,4),
which were already obsolete even before the move from 4.4 to 4.6 as
minimum GCC version for building glibc.
Tested for ARM that installed shared libraries are unchanged by this
patch.
* sysdeps/arm/sysdep.h [PROF && __GNUC_PREREQ(4,4)] (CALL_MCOUNT):
Make definition conditional only on [PROF].
[PROF && !__GNUC_PREREQ(4,4)] (CALL_MCOUNT): Remove conditional
definition.
[__GNUC_PREREQ(4,4)] (mcount): Make definition unconditional.
[!__GNUC_PREREQ(4,4)] (mcount): Remove conditional definition.
This patch makes the installed signal.h declare __sigpause only when
necessary (when a macro definition of sigpause makes use of
__sigpause), rather than unconditionally. This fixes false positives
in the linknamespace tests by making it visible to those tests that no
use of ISO C functionality will actually bring in the definition of
__sigpause and so bring in the other symbols defined in the same
object. There is no bug filed in Bugzilla because this is fixing
false positives rather than any user-visible bug.
Tested for x86_64 (testsuite, and that installed stripped shared
libraries are unchanged by this patch).
* signal/signal.h (__sigpause): Only declare if [__USE_XOPEN &&
!__GNUC__].
* include/signal.h (__sigpause): Move declaration above call to
libc_hidden_proto.
* conform/Makefile (test-xfail-ISO/signal.h/linknamespace): Remove
variable.
(test-xfail-ISO99/signal.h/linknamespace): Likewise.
(test-xfail-ISO11/signal.h/linknamespace): Likewise.
As discussed in the thread starting at
<https://sourceware.org/ml/libc-alpha/2014-10/msg00792.html>, and
continuing into November, this patch increases the minimum GCC version
for building glibc to 4.6 (there seemed to be no clear consensus for
4.7). In particular, this allows us to use #pragma GCC diagnostic for
fine-grained warning control with -Werror (subject to establishing a
suitable policy for that use). The documentation has a statement, as
requested, about the most recent GCC version tested for building
glibc, and I've updated <https://sourceware.org/glibc/wiki/Release> to
refer to updating that statement. A NEWS entry is added for this
change, although previous such changes didn't get them.
Tested for x86_64 (testsuite, and that installed shared libraries are
unchanged by this patch).
* configure.ac (libc_cv_compiler_ok): Require GCC 4.6 or later.
* configure: Regenerated.
* manual/install.texi (Tools for Compilation): Document a
requirement of GCC 4.6 or later and that GCC 4.9 is the newest
compiler verified to work.
* INSTALL: Regenerated.
This patch fixes the build of C mempcpy and stpcpy by disabling the
redirection to __mempcpy and __stpcpy asm names if
NO_MEMPCPY_STPCPY_REDIRECT is defined, and defining that macro in the
relevant source files.
Tested for powerpc32 that the build is fixed.
* include/string.h [NO_MEMPCPY_STPCPY_REDIRECT] (mempcpy): Do not
redeclare with asm name.
[NO_MEMPCPY_STPCPY_REDIRECT] (stpcpy): Likewise.
* string/mempcpy.c (NO_MEMPCPY_STPCPY_REDIRECT): Define before
including <string.h>.
* string/stpcpy.c (NO_MEMPCPY_STPCPY_REDIRECT): Likewise.
* sysdeps/powerpc/powerpc32/power4/multiarch/mempcpy.c
[!NOT_IN_libc] (NO_MEMPCPY_STPCPY_REDIRECT): Likewise.
* sysdeps/powerpc/powerpc64/multiarch/mempcpy.c
[!NOT_IN_libc] (NO_MEMPCPY_STPCPY_REDIRECT): Likewise.
* sysdeps/powerpc/powerpc64/multiarch/stpcpy.c
[SHARED && !NOT_IN_libc] (NO_MEMPCPY_STPCPY_REDIRECT): Likewise.
This patch fixes those warnings by using a prototype definition for
__strtol.
Tested for x86_64 that stripped installed shared libraries are
unchanged by this patch.
* stdlib/strtol.c (__strtol): Use prototype definition.
For 32-bit platforms, strtoll and strtoull are strong symbols in libc,
but they are not in ISO C90, and are brought in by references to
__strtoll_internal / __strtoull_internal from scanf. (For 64-bit
platforms, they are properly weak.) This patch makes them weak for
32-bit (it has a side-effect of making other symbols weak that don't
need to be weak, such as strtol, but that's harmless).
Tested for x86 (testsuite, and that the disassembly of installed
shared libraries is unchanged by the patch). This fixes all 120
unXFAILed FAILs of the new linknamespace tests seen for x86 (in fact,
there are now seven XPASSes of those tests for x86
XPASS: conform/POSIX2008/fcntl.h/linknamespace
XPASS: conform/UNIX98/libgen.h/linknamespace
XPASS: conform/XOPEN2K/fcntl.h/linknamespace
XPASS: conform/XOPEN2K/libgen.h/linknamespace
XPASS: conform/XOPEN2K8/fcntl.h/linknamespace
XPASS: conform/XOPEN2K8/libgen.h/linknamespace
XPASS: conform/XPG4/libgen.h/linknamespace
so suggesting that the failures seen for those on x86_64 are in some
way architecture-specific or 64-bit-specific).
[BZ #17594]
* stdlib/strtol.c (SYM__): New macro.
(SYM__1): Likewise.
(__strtol): Likewise.
(strtol): Rename to __strtol and define as weak alias of
__strtol. Use libc_hidden_weak.
intl/localealias.c is brought in by ISO C functions, but uses
fgets_unlocked, which is not an ISO C function. This patch changes
this to use __fgets_unlocked.
Tested for x86_64 (testsuite, and that stripped installed shared
libraries are unchanged by the patch).
[BZ #17589]
* intl/localealias.c [_LIBC] (FGETS): Use __fgets_unlocked instead
of fgets_unlocked.
Locale code, brought in by ISO C functions, calls memmem, which is not
an ISO C function. This isn't an ISO C conformance bug, because all
mem* names are reserved, but glibc practice is not to rely on that
reservation (thus, memmem is only declared in string.h if __USE_GNU
even though ISO C would allow it to be declared unconditionally, for
example). This patch changes that code to use __memmem.
Note: there are uses of memmem elsewhere in glibc that I didn't
change, although it may turn out some of those also need to use
__memmem.
Tested for x86_64 (testsuite, and that disassembly of installed shared
libraries is unchanged by this patch).
[BZ #17585]
* string/memmem.c [!_LIBC] (__memmem): Define to memmem.
(memmem): Rename to __memmem and define as weak alias of
__memmem. Use libc_hidden_weak.
(__memmem): Use libc_hidden_def.
* include/string.h (__memmem): Declare. Use libc_hidden_proto.
* locale/findlocale.c (valid_locale_name): Use __memmem instead of
memmem.
__get_nprocs is called from malloc code, but calls fgets_unlocked,
which is not an ISO C or POSIX function. This patch fixes it to call
a new __fgets_unlocked name instead.
Note: there are various other uses of fgets_unlocked in glibc's
libraries, and I haven't yet investigated which others might also be
problematic (called directly or indirectly from standard functions)
and so need to change to use __fgets_unlocked.
Tested for x86_64 (testsuite, and that disassembly of installed shared
libraries is unchanged by the patch).
[BZ #17582]
* libio/iofgets.c [weak_alias && !_IO_MTSAFE_IO]
(__fgets_unlocked): Add alias of _IO_fgets. Use libc_hidden_def.
* libio/iofgets_u.c (fgets_unlocked): Rename to __fgets_unlocked
and define as weak alias of __fgets_unlocked. Use
libc_hidden_weak.
(__fgets_unlocked): Use libc_hidden_def.
* include/stdio.h (__fgets_unlocked): Declare. Use
libc_hidden_proto.
* sysdeps/unix/sysv/linux/getsysstats.c (phys_pages_info): Use
__fgets_unlocked instead of fgets_unlocked.
* sysdeps/unix/sysv/linux/alpha/getsysstats.c
(GET_NPROCS_CONF_PARSER): Likewise.
* sysdeps/unix/sysv/linux/sparc/getsysstats.c
(GET_NPROCS_CONF_PARSER): Likewise.
__printf_fp calls wmemset, but that is not an ISO C90 function. This
patch fixes it to call a new __wmemset name instead (with wmemset
being a weak alias).
Tested for x86_64 (testsuite, and that disassembly of installed shared
libraries is unchanged by the patch).
[BZ #17574]
* wcsmbs/wmemset.c (wmemset): Rename to __wmemset and define as
weak alias of __wmemset. Use libc_hidden_weak.
(__wmemset): Use libc_hidden_def.
* include/wchar.h (__wmemset): Declare. Use libc_hidden_proto.
* stdio-common/printf_fp.c (___printf_fp): Call __wmemset instead
of wmemset.
Various glibc functions call __stpcpy and __mempcpy for namespace
reasons instead of plain stpcpy and mempcpy. But __stpcpy and
__mempcpy are macros that call __builtin_stpcpy and __builtin_mempcpy,
and unless GCC optimizes the calls, they end up calling the C
functions stpcpy and mempcpy.
For calls from within shared libc, libc_hidden_builtin_proto ensures
that calls to those C functions are in turn mapped to call __GI_stpcpy
and __GI_mempcpy. However, for static libc, and for calls from shared
libraries other than libc, the ELF symbols stpcpy and mempcpy end up
getting called, breaking the ISO C namespace (in the case of stpcpy)
or glibc conventions about not relying on the "future library
directions" reservations (in the case of mempcpy).
This patch fixes this by adding declarations of these functions to
include/string.h, under an appropriate condition, with __asm__ used to
change the assembler name used for calls (the mempcpy case was
previously discussed, and the approach for the fix is as I suggested
in <https://sourceware.org/ml/libc-alpha/2013-02/msg00063.html>).
Tested for x86_64 with the testsuite; also checked that dcigettext.o
(an example previously noted of undesired calls to stpcpy and mempcpy)
now calls __stpcpy and __mempcpy instead, as do non-libc shared
libraries (__stpcpy and __mempcpy were already exported from shared
libc). Disassembly of installed shared libraries isn't easy to
compare because of reordered PLT entries resulting from the change in
functions called (libnsl, libnss_compat, libnss_dns, libnss_files,
libnss_hesiod, libnss_nis, libnss_nisplus, libpthread, librt all have
such changes).
[BZ #17573]
* include/string.h [NOT_IN_libc || !SHARED] (mempcpy): Declare
with asm name __mempcpy.
[NOT_IN_libc || !SHARED] (stpcpy): Declare with asm name __stpcpy.
rawmemchr is not an ISO C function, but __rawmemchr is called from ISO
C functions, so rawmemchr should be a weak alias. On most
architecture it is, but x86_64 defines the function as rawmemchr with
__rawmemchr as a strong alias. This patch makes x86_64 follow the
same arrangements as other architectures.
Tested for x86_64 (testsuite, and that disassembly of installed shared
libraries is unchanged by the patch).
[BZ #17572]
* sysdeps/x86_64/rawmemchr.S (rawmemchr): Rename to __rawmemchr
and define as weak alias of __rawmemchr.
(__rawmemchr): Do not define as strong alias of rawmemchr.
qsort_r is defined in the same file as qsort, but is not an ISO C
function, so should be a weak alias for __qsort_r. The uses in
getaddrinfo should also call __qsort_r, since getaddrinfo is a POSIX
function and qsort_r isn't. This patch implements this. Because nscd
uses the getaddrinfo sources outside libc, as do the tst-rfc3484
tests, a #define of __qsort_r to qsort_r is added there alongside the
similar defines for other libc-internal symbols used in getaddrinfo.
Tested for x86_64 (testsuite, and that disassembly of installed shared
libraries is unchanged by the patch).
[BZ #17571]
* stdlib/msort.c (qsort_r): Rename to __qsort_r and define as weak
alias of __qsort_r.
(qsort): Call __qsort_r instead of qsort_r.
* include/stdlib.h (qsort_r): Do not call libc_hidden_proto.
(__qsort_r): Declare. Call libc_hidden_proto.
* sysdeps/posix/getaddrinfo.c (getaddrinfo): Call __qsort_r
instead of qsort_r.
* nscd/gai.c (__qsort_r): Define to qsort_r.
* posix/tst-rfc3484.c (__qsort_r): Likewise.
* posix/tst-rfc3484-2.c (__qsort_r): Likewise.
* posix/tst-rfc3484-3.c (__qsort_r): Likewise.
malloc_info is defined in the same file as malloc and free, but is not
an ISO C function, so should be a weak symbol. This patch makes it
so.
Tested for x86_64 (testsuite, and that disassembly of installed shared
libraries is unchanged by the patch).
[BZ #17570]
* malloc/malloc.c (malloc_info): Rename to __malloc_info and
define as weak alias of __malloc_info.
__getcwd is called from dcigettext.o (brought in by various ISO C
functionality), but calls rewinddir, which is not an ISO C function.
This patch makes __getcwd call __rewinddir instead and makes rewinddir
a weak alias for __rewinddir.
Since getcwd.c is shared with gnulib (albeit not merged in either
direction for a long time, and omitted from gnulib's
config/srclist.txt list of shared files) I put in a #ifndef _LIBC
define of __rewinddir to rewinddir, although a future merged version
of getcwd could end up looking significantly different.
Tested for x86_64 (testsuite, and that disassembly of installed shared
libraries is unchanged by this patch).
[BZ #17584]
* dirent/rewinddir.c (rewinddir): Rename to __rewinddir and define
as weak alias of __rewinddir. Don't use libc_hidden_def.
(__rewinddir): Use libc_hidden_def.
* sysdeps/mach/hurd/rewinddir.c: Rename to __rewinddir and define
as weak alias of __rewinddir. Don't use libc_hidden_def.
(__rewinddir): Use libc_hidden_def.
* sysdeps/posix/rewinddir.c: Rename to __rewinddir and define as
weak alias of __rewinddir. Don't use libc_hidden_def.
(__rewinddir): Use libc_hidden_def.
* include/dirent.h (rewinddir): Don't use libc_hidden_proto.
(__rewinddir): Use libc_hidden_proto.
* sysdeps/posix/getcwd.c [!_LIBC] (__rewinddir): Define to
rewinddir.
(__getcwd): Use __rewinddir instead of rewinddir.
tzfile.c is brought in by various ISO C functions, but calls fileno,
fread_unlocked and ftello, which are not ISO C functions. This patch
adds names __fileno, __fread_unlocked and __ftello for those
functions, making tzfile.c use those new names.
Note: there are various uses of fileno elsewhere in glibc that I
didn't change, although it may turn out that some of those also need
to use __fileno.
Tested for x86_64 with the glibc testsuite. Changed line numbers in
tzfile.c cause changes in assertions, and for some reason this ends up
with different instruction choice and register allocation, affecting
the size of __tzfile_read and so making comparison of disassembly for
libc.so problematic.
[BZ #17583]
* libio/fileno.c (fileno): Rename to __fileno and define as weak
alias of __fileno. Use libc_hidden_weak.
(__fileno): Use libc_hidden_def.
[weak_alias] (fileno_unlocked): Define as weak alias of __fileno.
* libio/ftello.c (ftello): Rename to __ftello and define as weak
alias of __ftello.
[__OFF_T_MATCHES_OFF64_T] (ftello64): Define as weak alias of
__ftello.
* libio/iofread.c [weak_alias && !_IO_MTSAFE_IO]
(__fread_unlocked): Define as strong alias of _IO_fread. Use
libc_hidden_def.
(fread_unlocked): Don't use libc_hidden_ver.
* libio/iofread_u.c (fread_unlocked): Rename to __fread_unlocked
and define as weak alias of __fread_unlocked. Don't use
libc_hidden_def.
(__fread_unlocked): Use libc_hidden_def.
* include/stdio.h (__fileno): Declare. Use libc_hidden_proto.
(ftello): Don't use libc_hidden_proto.
(__ftello): Declare. Use libc_hidden_proto.
(fread_unlocked): Don't use libc_hidden_proto.
(__fread_unlocked): Declare. Use libc_hidden_proto.
* time/tzfile.c (__tzfile_read): Use __fileno, __fread_unlocked
and __ftello instead of fileno, fread_unlocked and ftello.
The s390 ABI requires the stack pointer to be aligned at 8-bytes.
When a program is invoked as an argument to the dynamic linker,
_dl_start_user adjusts the stack to remove the dynamic linker
arguments so that the program sees only its name and arguments. This
may result in the stack being misaligned since each argument shift is
only a word and not a double-word.
This is now fixed shifting argv and envp down instead of shifting argc
up and reclaiming the stack. This requires _dl_argv to be adjusted
and hence, is no longer relro.
Modifies the test examination in test-skeleton.c so that a test can be
successful if it is interrupted or it returns uninterrupted with the
expected status. For this both EXPECTED_SIGNAL and EXPECTED_STATUS
have to be set, as is done in tst-strcoll-overflow.c.
