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Siddhesh Poyarekar 2a08b6e833 Warn on unsupported fortification levels
Make the _FORTIFY_SOURCE macro soup in features.h warn about
unsupported fortification levels.  For example, it will warn about
_FORTIFY_SOURCE=3 and over with an indication of which level has been
selected.

Co-authored-by: Paul Eggert <eggert@cs.ucla.edu>
2020-12-31 16:55:21 +05:30
argp Fix spelling and grammar in several comments 2020-12-12 01:16:56 +01:00
assert Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
benchtests New benchtest: pthread locks 2020-10-21 11:03:52 -04:00
bits hurd: Add WSTOPPED/WCONTINUED/WEXITED/WNOWAIT support [BZ #23091] 2020-12-28 23:37:04 +01:00
catgets Remove internal usage of extensible stat functions 2020-09-11 14:35:32 -03:00
ChangeLog.old Prepare for glibc 2.32 release. 2020-08-04 22:17:00 -04:00
conform hurd: Add WSTOPPED/WCONTINUED/WEXITED/WNOWAIT support [BZ #23091] 2020-12-28 23:37:04 +01:00
crypt Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
csu Replace __libc_multiple_libcs with __libc_initial flag 2020-12-16 15:13:40 +01:00
ctype Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
debug Remove __warndecl 2020-11-05 15:11:42 +05:30
dirent Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
dlfcn treewide: fix incorrect spelling of indices in comments 2020-12-11 02:00:00 +00:00
elf elf: Account for glibc-hwcaps/ prefix in _dl_important_hwcaps 2020-12-23 15:47:22 +01:00
gmon Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
gnulib Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
grp nsswitch: handle missing actions properly 2020-12-14 12:19:43 -05:00
gshadow shadow: Implement fgetspent_r using __nss_fgetent_r 2020-07-21 07:34:43 +02:00
hesiod nss_hesiod: Use NSS_DECLARE_MODULE_FUNCTIONS 2020-02-13 09:14:44 +01:00
htl {nptl,htl}/semaphoreP.h: clean up 2020-12-16 14:51:14 +01:00
hurd hurd: set sigaction for signal preemptors in arch-independent file 2020-12-26 18:03:31 +01:00
iconv iconv add iconv_close before the function returned with bad value. 2020-12-21 09:52:38 +05:30
iconvdata Fix buffer overrun in EUC-KR conversion module (bz #24973) 2020-12-21 09:01:49 +05:30
include Warn on unsupported fortification levels 2020-12-31 16:55:21 +05:30
inet Fix spelling and grammar in several comments 2020-12-12 01:16:56 +01:00
intl Revert "Fix missing redirects in testsuite targets" 2020-10-08 10:09:30 +02:00
io io: Remove xmknod{at} implementations 2020-12-29 16:44:16 -03:00
libio Revert "Fix missing redirects in testsuite targets" 2020-10-08 10:09:30 +02:00
locale treewide: fix incorrect spelling of indices in comments 2020-12-11 02:00:00 +00:00
localedata Revert "Fix missing redirects in testsuite targets" 2020-10-08 10:09:30 +02:00
login Linux: unlockpt needs to fail with EINVAL, not ENOTTY (bug 26053) 2020-10-07 10:56:00 +02:00
mach hurd: Add LLL_PRIVATE and LLL_SHARED 2020-12-16 01:58:33 +01:00
malloc malloc: preserve errno on mcheck hooks [BZ #17924] 2020-12-30 10:37:58 -03:00
manual free: preserve errno [BZ#17924] 2020-12-29 00:46:46 -08:00
math x86 long double: Add tests for pseudo normal numbers 2020-12-30 10:53:11 +05:30
mathvec Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
misc misc: Use __ferror_unlocked instead of ferror 2020-12-23 07:03:42 +05:30
nis Disable spurious -Warray-bounds for ypclnt.c (bug 26687) 2020-10-30 21:40:25 +00:00
nptl {nptl,htl}/semaphoreP.h: clean up 2020-12-16 14:51:14 +01:00
nptl_db treewide: fix incorrect spelling of indices in comments 2020-12-11 02:00:00 +00:00
nscd nsswitch: use new internal API (callers) 2020-12-04 17:16:32 -05:00
nss nsswitch: handle missing actions properly 2020-12-14 12:19:43 -05:00
po Update translations. 2020-08-04 20:31:51 -04:00
posix nsswitch: use new internal API (callers) 2020-12-04 17:16:32 -05:00
pwd Remove tls.h inclusion from internal errno.h 2020-11-13 12:59:19 -03:00
resolv y2038: Convert gai_suspend to support 64 bit time 2020-12-04 10:04:38 +01:00
resource Move vtimes to a compatibility symbol 2020-10-19 16:44:20 -03:00
rt rt: Fix typos in comments in <aio.h> 2020-10-19 10:55:00 +02:00
scripts hurd: Accept including hurd/version.h 2020-12-29 03:26:12 +01:00
setjmp Fix GCC 11 -Warray-parameter warning for __sigsetjmp (bug 26647) 2020-10-05 16:46:46 +00:00
shadow shadow: Implement fgetspent_r using __nss_fgetent_r 2020-07-21 07:34:43 +02:00
signal Remove tls.h inclusion from internal errno.h 2020-11-13 12:59:19 -03:00
socket Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
soft-fp Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
stdio-common tests: Remove NULL check for an array 2020-11-12 13:29:59 +05:30
stdlib getenv: Move call to strlen to the branch it's used in. 2020-12-18 12:02:28 +05:30
string treewide: fix incorrect spelling of indices in comments 2020-12-11 02:00:00 +00:00
sunrpc Handle out-of-memory case in svc_tcp.c/svc_unix.c:rendezvous_request. 2020-12-10 11:11:20 +01:00
support support: Make support_process_state_wait wait less 2020-12-28 23:17:56 +01:00
sysdeps powerpc: Use scv instruction on clone when available 2020-12-30 18:26:33 -03:00
sysvipc sysvipc: Return EINVAL for invalid shmctl commands 2020-10-14 11:49:55 -03:00
termios Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
time linux: Allow adjtime with NULL argument [BZ #26833] 2020-11-09 11:19:35 -03:00
timezone timezone: Change zdump installation to bin directory 2020-11-25 15:52:50 +01:00
wcsmbs Make strtoimax, strtoumax, wcstoimax, wcstoumax into aliases 2020-12-08 18:15:27 +00:00
wctype Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
.gitattributes Assume __NR_openat is always defined 2016-03-23 23:35:08 +01:00
.gitignore Add *.pyc to .gitignore 2015-05-18 15:26:26 +05:30
abi-tags Remove the bulk of the NaCl port. 2017-05-20 08:09:10 -04:00
aclocal.m4 LIBC_SLIBDIR_RTLDDIR: substitute arguments in single quotes 2018-01-25 17:20:28 +01:00
config.h.in config: Allow memory tagging to be enabled when configuring glibc 2020-12-21 15:25:25 +00:00
config.make.in config: Allow memory tagging to be enabled when configuring glibc 2020-12-21 15:25:25 +00:00
configure config: Allow memory tagging to be enabled when configuring glibc 2020-12-21 15:25:25 +00:00
configure.ac config: Allow memory tagging to be enabled when configuring glibc 2020-12-21 15:25:25 +00:00
COPYING Update to latest versions of GPL-2.0 and LGPL-2.1 2013-09-09 12:52:48 +10:00
COPYING.LIB Update to latest versions of GPL-2.0 and LGPL-2.1 2013-09-09 12:52:48 +10:00
extra-lib.mk Rename cppflags-iterator.mk to libof-iterator.mk, remove extra-modules.mk. 2017-05-09 07:06:29 -04:00
gen-locales.mk Improve gen-locales.mk and gen-locale.sh to make test files with @ options work 2018-02-27 17:01:57 +01:00
INSTALL config: Allow memory tagging to be enabled when configuring glibc 2020-12-21 15:25:25 +00:00
libc-abis libc-abis: Define ABSOLUTE ABI [BZ #19818][BZ #23307] 2018-07-05 18:06:43 +01:00
libof-iterator.mk Rename cppflags-iterator.mk to libof-iterator.mk, remove extra-modules.mk. 2017-05-09 07:06:29 -04:00
LICENSES Prefer https to http for gnu.org and fsf.org URLs 2019-09-07 02:43:31 -07:00
MAINTAINERS Add MAINTAINERS 2017-05-11 13:38:30 -04:00
Makeconfig Add {,sysdep-}ld-library-path make variable 2020-11-16 21:15:20 +00:00
Makefile Set locale related environment variables in debugglibc.sh 2020-09-24 14:58:36 +02:00
Makefile.help Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
Makefile.in New make target to only build benchmark binaries 2016-04-20 10:23:28 +05:30
Makerules Don't mix linker error messages into edited scripts 2020-08-04 19:52:56 -04:00
NEWS s390x: Require GCC 7.1 or later to build glibc. 2020-12-17 16:18:04 +01:00
o-iterator.mk Fri Mar 17 12:58:37 1995 Roland McGrath <roland@churchy.gnu.ai.mit.edu> 1995-03-17 18:42:51 +00:00
README Documentation for the RISC-V 32-bit port 2020-08-27 08:17:44 -07:00
Rules tests-mcheck: New variable to run tests with MALLOC_CHECK_=3 2020-12-24 06:02:02 +05:30
shlib-versions Remove --enable-obsolete-nsl configure flag 2020-07-08 17:25:57 +02:00
test-skeleton.c Update copyright dates with scripts/update-copyrights. 2020-01-01 00:14:33 +00:00
version.h Open master branch for glibc 2.33 development. 2020-08-04 23:41:43 -04:00

This directory contains the sources of the GNU C Library.
See the file "version.h" for what release version you have.

The GNU C Library is the standard system C library for all GNU systems,
and is an important part of what makes up a GNU system.  It provides the
system API for all programs written in C and C-compatible languages such
as C++ and Objective C; the runtime facilities of other programming
languages use the C library to access the underlying operating system.

In GNU/Linux systems, the C library works with the Linux kernel to
implement the operating system behavior seen by user applications.
In GNU/Hurd systems, it works with a microkernel and Hurd servers.

The GNU C Library implements much of the POSIX.1 functionality in the
GNU/Hurd system, using configurations i[4567]86-*-gnu.

When working with Linux kernels, this version of the GNU C Library
requires Linux kernel version 3.2 or later.

Also note that the shared version of the libgcc_s library must be
installed for the pthread library to work correctly.

The GNU C Library supports these configurations for using Linux kernels:

	aarch64*-*-linux-gnu
	alpha*-*-linux-gnu
	arc*-*-linux-gnu
	arm-*-linux-gnueabi
	csky-*-linux-gnuabiv2
	hppa-*-linux-gnu
	i[4567]86-*-linux-gnu
	x86_64-*-linux-gnu	Can build either x86_64 or x32
	ia64-*-linux-gnu
	m68k-*-linux-gnu
	microblaze*-*-linux-gnu
	mips-*-linux-gnu
	mips64-*-linux-gnu
	powerpc-*-linux-gnu	Hardware or software floating point, BE only.
	powerpc64*-*-linux-gnu	Big-endian and little-endian.
	s390-*-linux-gnu
	s390x-*-linux-gnu
	riscv32-*-linux-gnu
	riscv64-*-linux-gnu
	sh[34]-*-linux-gnu
	sparc*-*-linux-gnu
	sparc64*-*-linux-gnu

If you are interested in doing a port, please contact the glibc
maintainers; see https://www.gnu.org/software/libc/ for more
information.

See the file INSTALL to find out how to configure, build, and install
the GNU C Library.  You might also consider reading the WWW pages for
the C library at https://www.gnu.org/software/libc/.

The GNU C Library is (almost) completely documented by the Texinfo manual
found in the `manual/' subdirectory.  The manual is still being updated
and contains some known errors and omissions; we regret that we do not
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This web page gives detailed information on how to report bugs properly.

The GNU C Library is free software.  See the file COPYING.LIB for copying
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these additional notices to be distributed.  License copyright years may be
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