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glibc

The GNU C library.

Today's Activity

libio: null terminate the buffer upon initial allocation in getdelim
Collin Funk: Commit 33eff78c8b28adc4963987880e10d96761f2a167 caused issues in nbdkit which had code similar to this to get the last line of the file: while (getline (&line, &len, fp) != -1) ; /* Process LINE.

Yesterday's Activity

aarch64: Implement AdvSIMD and SVE rsqrt(f) routines
James Chesterman: Vector variants of the new C23 rsqrt routines for both AdvSIMD and SVE, as well as in both single and double precision.

Other Activity This Week

i386: Fix fmod/fmodf/remainder/remainderf for gcc-12
Adhemerval Zanella: The __builtin_fmod{f} and __builtin_remainder{f} were added on gcc 13, and the minimum supported gcc is 12.

aarch64: Support enforcing BTI on dependencies
Yury Khrustalev: Add glibc.cpu.aarch64_bti tunable with 2 values:

scripts: Support custom Git URLs in build-many-glibcs.py
Yury Khrustalev: Use environment variables to provide mirror URLs to checkout sources from Git.

scripts: Support custom FTP mirror URL in build-many-glibcs.py
Yury Khrustalev: Allow to use custom mirror URLs to download tarballs from a mirror of ftp.gnu.org using the FTP_GNU_ORG_MIRROR env variable (default

Recent Activity

libio: null terminate the buffer upon initial allocation in getdelim
Collin Funk: Commit 33eff78c8b28adc4963987880e10d96761f2a167 caused issues in nbdkit which had code similar to this to get the last line of the file: while (getline (&line, &len, fp) != -1) ; /* Process LINE.

aarch64: Implement AdvSIMD and SVE rsqrt(f) routines
James Chesterman: Vector variants of the new C23 rsqrt routines for both AdvSIMD and SVE, as well as in both single and double precision.

i386: Fix fmod/fmodf/remainder/remainderf for gcc-12
Adhemerval Zanella: The __builtin_fmod{f} and __builtin_remainder{f} were added on gcc 13, and the minimum supported gcc is 12.

aarch64: Support enforcing BTI on dependencies
Yury Khrustalev: Add glibc.cpu.aarch64_bti tunable with 2 values:

scripts: Support custom Git URLs in build-many-glibcs.py
Yury Khrustalev: Use environment variables to provide mirror URLs to checkout sources from Git.

scripts: Support custom FTP mirror URL in build-many-glibcs.py
Yury Khrustalev: Allow to use custom mirror URLs to download tarballs from a mirror of ftp.gnu.org using the FTP_GNU_ORG_MIRROR env variable (default

math: New generic fma implementation
Adhemerval Zanella: The current implementation relies on setting the rounding mode for different calculations (first to FE_TONEAREST and then to FE_TOWARDZERO) to obtain correctly rounded results.

Add umul_ppmm to gmp-arch.hdoc
Adhemerval Zanella: To enable “longlong.h” removal, the umul_ppmm is moved to a gmp-arch.h.

bench-malloc-thread: Add libm for powf
Adhemerval Zanella: The compiler might not constant fold the call, which issues linker error.

Enable --enable-fortify-source with clang
Adhemerval Zanella: clang generates internal calls for some _chk symbol, so add internal aliases for them, and stub some with rtld-stubbed-symbols to avoid ld.

glibc Release Tags

Check if linker supports -Wl,--undefined-version
Adhemerval Zanella: Although binutils has supported --no-undefined-version for a long timei (319416359200 back in 2002), --undefined-version was only added more recently (27fb6a1a7fcd on 2.40).

Create ChangeLog.old/ChangeLog.31
Andreas K. Hüttel

Increase version to 2.41.9000, add new section to NEWS
Andreas K. Hüttel: ### diff --git a/NEWS b/NEWS index b11422b060..e2e40e141c 100644 --- a/NEWS +++ b/NEWS @@ -5,6 +5,33 @@ See the end for copying conditions. Please send GNU C library bug reports via <

Create ChangeLog.old/ChangeLog.30
Andreas K. Hüttel

Increase version number to 2.40.9000
Andreas K. Hüttel

Add ChangeLog file
Andreas K. Hüttel

Open master branch for glibc 2.39 development
Andreas K. Hüttel

NEWS: Fix typos
Andreas K. Hüttel

Open master branch for glibc 2.38 development
Carlos O'Donell

Create ChangeLog.old/ChangeLog.26.
Carlos O'Donell

Most Popular In The Past Month

Remove support for lock elision
Stefan Liebler: The support for lock elision was already deprecated with glibc 2.42: commit 77438db8cfa6ee66b3906230156bdae11c49a195 "Mark support for lock elision as deprecated." See also discussions:

Add COPYINGv3 with the GPL version 3 text
Florian Weimer: The license is referenced in various headers, so we should ship it.

linux: Add mseal syscall support
Adhemerval Zanella: It has been added on Linux 6.10 (8be7258aad44b5e25977a98db136f677fa6f4370) as a way to block operations such as mapping, moving to another location, shrinking the size, expanding the size, or modifying it to a pre-existing memory mapping.

Implement C23 const-preserving standard library macros
Joseph Myers: C23 makes various standard library functions, that return a pointer into an input array, into macros that return a pointer to const when the relevant argument passed to the macro is a pointer to const.

math: New generic fma implementation
Adhemerval Zanella: The current implementation relies on setting the rounding mode for different calculations (first to FE_TONEAREST and then to FE_TOWARDZERO) to obtain correctly rounded results.

nss: Add ERANGE testing to tst-nss-test4 (bug 33361)
Carlos O'Donell: This adds testing for the fix added in commit: 0fceed254559836b57ee05188deac649bc505d05 "nss: Group merge does not react to ERANGE during merge (bug 33361)" The in-use group size is increased large enough to trigger ERANGE for initial buffers and cause a retry.

Enable --enable-fortify-source with clang
Adhemerval Zanella: clang generates internal calls for some _chk symbol, so add internal aliases for them, and stub some with rtld-stubbed-symbols to avoid ld.

libio: null terminate the buffer upon initial allocation in getdelim
Collin Funk: Commit 33eff78c8b28adc4963987880e10d96761f2a167 caused issues in nbdkit which had code similar to this to get the last line of the file: while (getline (&line, &len, fp) != -1) ; /* Process LINE.

aarch64: Support enforcing BTI on dependencies
Yury Khrustalev: Add glibc.cpu.aarch64_bti tunable with 2 values:

scripts: Support custom FTP mirror URL in build-many-glibcs.py
Yury Khrustalev: Allow to use custom mirror URLs to download tarballs from a mirror of ftp.gnu.org using the FTP_GNU_ORG_MIRROR env variable (default

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