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glibc

The GNU C library.

Other Activity This Week

Improve the accuracy of tgamma (BZ #26983)
Paul Zimmermann: With this patch, the maximal known error for tgamma is now reduced to 9 ulps for dbl-64, for all rounding modes.

Recent Activity

Improve the accuracy of tgamma (BZ #26983)
Paul Zimmermann: With this patch, the maximal known error for tgamma is now reduced to 9 ulps for dbl-64, for all rounding modes.

Fix the inaccuracy of j0f/j1f/y0f/y1f [BZ #14469, #14470, #14471, #14472]
Paul Zimmermann: For j0f/j1f/y0f/y1f, the largest error for all binary32 inputs is reduced to at most 9 ulps for all rounding modes. The new code is enabled only when there is a cancellation at the very end of the j0f/j1f/y0f/y1f computation, or for very large inputs, thus should not give any visible slowdown on average.

manual: clarify that scanf %n supports type modifiers
Alyssa Ross: My initial reading of the %n documentation was that it didn't support type conversions, because it only mentioned int*.

linux: Implement fstatat with __fstatat64_time64
Adhemerval Zanella: It makes fstatat use __NR_statx, which fix the s390 issue with missing nanoxsecond support on compat stat syscalls (at least on recent kernels) and limits the statx call to only one function (which simplifies the __ASSUME_STATX support).

nptl: Remove pthread raise implementation
Adhemerval Zanella: The Linux version already target the current thread by using tgkill along with getpid and gettid.

nptl: Remove pwrite from libpthread
Adhemerval Zanella: The libc version is identical and built with same flags, it is also uses as the default version.

nptl: Remove pread from libpthread
Adhemerval Zanella: The libc version is identical and built with same flags, it is also uses as the default version.

nptl: Remove open from libpthread
Adhemerval Zanella: The libc version is identical and built with same flags.

nptl: Remove lseek from libpthread
Adhemerval Zanella: The libc version is identical and built with same flags.

nptl: Remove send from libpthread
Adhemerval Zanella: The libc version is identical and built with same flags.

glibc Release Tags

Open master branch for glibc 2.34 development
Adhemerval Zanella

Prepare for glibc 2.33 release
Adhemerval Zanella: Update version.h, features.h, and ChangeLog.old/ChangeLog.22.

Open master branch for glibc 2.33 development
Carlos O'Donell: Happy hacking!

Generate ChangeLog.old/ChangeLog.20 for 2.31
Siddhesh Poyarekar: We're ready to tag!

Open master for 2.32 development
Siddhesh Poyarekar: happy hacking!

[MIPS] Raise highest supported EI_ABIVERSION value [BZ #24916]
Mihailo Stojanovic: This bumps the highest valid EI_ABIVERSION value to ABSOLUTE ABI. New testcase loads the symbol from the GOT with the "lb" instruction so that the EI_ABIVERSION header field of the shared object is set to ABSOLUTE (it doesn't actually check the value of the symbol), and makes sure that the main executable is executed without "ABI version invalid" error. Tested for all three ABIs (o32, n32, n64) using both static linker which handles undefined weak symbols correctly [1] (and sets the EI_ABIVERSION of the test module) and the one that doesn't (EI_ABIVERSION left as 0). [1]

Open master for 2.31 development
Carlos O'Donell

Tag 2.30 release
Carlos O'Donell

Update install and NEWS for 2.30 release
Carlos O'Donell

Replace PREPARE_VERSION macro with inline function
Tobias Klauser: - sysdeps/unix/sysv/linux/dl-vdso.h (PREPARE_VERSION): Remove macro.

Most Popular In The Past Month

io: Return UNSUPPORTED if filesystem do not support 64 bit timestamps
Adhemerval Zanella: Some Linux filesystems might not fully support 64 bit timestamps [1], which make some Linux specific tests to fail when they check for the functionality. This patch adds a new libsupport function, support_path_support_time64, that returns whether the target file supports or not 64 bit timestamps.

elf: Add EM_INTELGT for Intel Graphics Technology
H.J. Lu: Add EM_INTELGT (205) for Intel Graphics Technology which has been added to gABI:

nptl: Remove pread from libpthread
Adhemerval Zanella: The libc version is identical and built with same flags, it is also uses as the default version.

nptl: Remove pwrite from libpthread
Adhemerval Zanella: The libc version is identical and built with same flags, it is also uses as the default version.

Support for multiple versions in versioned_symbol, compat_symbol
Florian Weimer: This essentially folds compat_symbol_unique functionality into compat_symbol. This change eliminates the need for intermediate aliases for defining multiple symbol versions, for both compat_symbol and versioned_symbol.

malloc: Only support zeroing and not arbitrary memset with mtag
Szabolcs Nagy: The memset api is suboptimal and does not provide much benefit.

nptl: Remove open from libpthread
Adhemerval Zanella: The libc version is identical and built with same flags.

nptl: Remove pthread raise implementation
Adhemerval Zanella: The Linux version already target the current thread by using tgkill along with getpid and gettid.

nptl: Remove lseek from libpthread
Adhemerval Zanella: The libc version is identical and built with same flags.

malloc: Use chunk2rawmem throughout
Szabolcs Nagy: The difference between chunk2mem and chunk2rawmem is that the latter does not get the memory tag for the returned pointer.

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