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glibc

The GNU C library.

Other Activity This Week

Obsolete nfsservctl
Joseph Myers: The Linux nfsservctl syscall was removed in Linux 3.1.

Recent Activity

Obsolete nfsservctl
Joseph Myers: The Linux nfsservctl syscall was removed in Linux 3.1.

Move math_check_force_underflow macros to separate math-underflow.h
Joseph Myers: This patch continues cleaning up math_private.h by moving the math_check_force_underflow set of macros to a separate header math-underflow.h. This header is included by the files that need it rather than from math_private.h.

Deprecate ustat syscall interface
Adhemerval Zanella: As for sysctl, ustat has been deprecated in favor of {f}statfs.

Remove tilegx port
Joseph Myers: Since tile support has been removed from the Linux kernel for 4.17, this patch removes the (unmaintained) port to tilegx from glibc (the tilepro support having been previously removed).

Use GCC 8 in build-many-glibcs.py by default
Joseph Myers: Now that GCC 8 has branched, this patch makes build-many-glibcs.py default to using GCC 8 branch instead of GCC 7.

Add PTRACE_SECCOMP_GET_METADATA from Linux 4.16 to sys/ptrace.h
Joseph Myers: This patch adds the PTRACE_SECCOMP_GET_METADATA constant from Linux 4.16 to all relevant sys/ptrace.h files.

Add NT_PPC_PKEY from Linux 4.16 to elf.h
Joseph Myers: This patch adds the NT_PPC_PKEY macro from Linux 4.16 to elf.h.

NEWS: Reindent and copyedit
Zack Weinberg: Make the indentation of the "Deprecated and removed features" section for 2.28 consistent with the indentation of the "Major new features" section above.

elf: Correct absolute (SHN_ABS) symbol run-time calculation [BZ #19818]
Maciej W. Rozycki: Do not relocate absolute symbols by the base address.

elf: Unify symbol address run-time calculation [BZ #19818]
Maciej W. Rozycki: Wrap symbol address run-time calculation into a macro and use it throughout, replacing inline calculations. There are a couple of variants, most of them different in a functionally insignificant way.

glibc Release Tags

Update for 2.25 release
Siddhesh Poyarekar

Update version.h and include/features.h for 2.22 release
Carlos O'Donell

Restore _POSIX2_C_VERSION definition (bug 438).
Joseph Myers: My review of conformtest expectations for POSIX showed up that the _POSIX2_C_VERSION macro, required by POSIX and XPG standards before 2001, was missing in unistd.h, having been removed on 2003-04-03 despite those standards still being supported.

Bump required version of texinfo to 4.7
Will Newton: It seems we require texinfo 4.7 for the --plaintext option, so document that and check for the correct version in configure. ChangeLog: 2014-12-15 Will Newton - manual/install.texi: Bump required version of texinfo to 4.7 from 4.5. - INSTALL: Regenerated. - configure.ac: Check for makeinfo version 4.7 and above. - configure: Regenerated.

Rework compiler version check in configure
Roland McGrath

Update version.h and include/features.h for 2.19 release
Allan McRae

Accept make versions 4.0 and greater
Marc-Antoine Perennou

Update version.h and include/features.h for 2.18 release
David S. Miller

Make _LIB_VERSION a weak symbol
Siddhesh Poyarekar: That way it can live alongside _LIB_VERSION in libieee.a for statically compiled programs.

Most Popular This Year

Enable tunables by default
Siddhesh Poyarekar: All of the major architectures are adopting tunables as a way to add tuning to the library, from hwcap_mask for aarch64 to HLE for s390 and ifunc and cache geometry for x86.

Add internal facility for dynamic array handling
Florian Weimer: This is intended as a type-safe alternative to obstacks and hand-written realloc constructs.

Add per-thread cache to malloc
DJ Delorie: - config.make.in: Enable experimental malloc option. - configure.ac: Likewise. - configure: Regenerate. - manual/install.texi: Document it. - INSTALL: Regenerate. - malloc/Makefile: Likewise. - malloc/malloc.c: Add per-thread cache (tcache).

Remove add-ons mechanism
Joseph Myers: glibc has an add-ons mechanism to allow additional software to be integrated into the glibc build.

Implement allocation buffers for internal use
Florian Weimer: This commit adds fixed-size allocation buffers.

posix: Implement preadv2 and pwritev2
Adhemerval Zanella: This patch adds support of preadv2 and pwritev2 which are similar to preadv/pwritev but with an extra flag argument.

Add _Float64, _Float32x function aliases
Joseph Myers: This patch continues filling out TS 18661-3 support by adding *f64 and *f32x function aliases, supporting _Float64 and _Float32x, as aliases for double functions.

Single threaded stdio optimization
Szabolcs Nagy: Locking overhead can be significant in some stdio operations that are common in single threaded applications. This patch adds the _IO_FLAGS2_NEED_LOCK flag to indicate if an _IO_FILE object needs to be locked and some of the stdio functions just jump to their _unlocked variant when not.

powerpc: Add optimized version of [l]lroundf
Rajalakshmi Srinivasaraghavan: This patch makes use of optimized double version of llround for single precision as both the versions return [long] long type.

Add _Float64x function aliases
Joseph Myers: This patch continues filling out TS 18661-3 support by adding *f64x function aliases on platforms with _Float64x support.

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