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Open master branch for glibc 2.41 development

The GNU C Library version 2.40 is now available

The GNU C Library
=================

The GNU C Library version 2.40 is now available.

The GNU C Library is used as *the* C library in the GNU system and
in GNU/Linux systems, as well as many other systems that use Linux
as the kernel.

The GNU C Library is primarily designed to be a portable
and high performance C library.  It follows all relevant
standards including ISO C11 and POSIX.1-2017.  It is also
internationalized and has one of the most complete
internationalization interfaces known.

The GNU C Library webpage is at http://www.gnu.org/software/libc/

Packages for the 2.40 release may be downloaded from:
        http://ftpmirror.gnu.org/libc/
        http://ftp.gnu.org/gnu/libc/

The mirror list is at http://www.gnu.org/order/ftp.html

Distributions are encouraged to track the release/* branches
corresponding to the releases they are using.  The release
branches will be updated with conservative bug fixes and new
features while retaining backwards compatibility.

NEWS for version 2.40
=====================

Major new features:

* The <stdbit.h> header type-generic macros have been changed when using
  GCC 14.1 or later to use __builtin_stdc_bit_ceil etc. built-in functions
  in order to support unsigned __int128 and/or unsigned _BitInt(N) operands
  with arbitrary precisions when supported by the target.

* The GNU C Library now supports a feature test macro _ISOC23_SOURCE to
  enable features from the ISO C23 standard.  Only some features from
  this standard are supported by the GNU C Library.  The older name
  _ISOC2X_SOURCE is still supported.  Features from C23 are also enabled
  by _GNU_SOURCE, or by compiling with the GCC options -std=c23,
  -std=gnu23, -std=c2x or -std=gnu2x.

* The following ISO C23 function families (introduced in TS
  18661-4:2015) are now supported in <math.h>.  Each family includes
  functions for float, double, long double, _FloatN and _FloatNx, and a
  type-generic macro in <tgmath.h>.

  - Exponential functions: exp2m1, exp10m1.

  - Logarithmic functions: log2p1, log10p1, logp1.

* A new tunable, glibc.rtld.enable_secure, can be used to run a program
  as if it were a setuid process. This is currently a testing tool to allow
  more extensive verification tests for AT_SECURE programs and not meant to
  be a security feature.

* On Linux, the epoll header was updated to include epoll ioctl definitions
  and the related structure added in Linux kernel 6.9.

* The fortify functionality has been significantly enhanced for building
  programs with clang against the GNU C Library.

* Many functions have been added to the vector library for aarch64:
    acosh, asinh, atanh, cbrt, cosh, erf, erfc, hypot, pow, sinh, tanh

* On x86, memset can now use non-temporal stores to improve the performance
  of large writes. This behaviour is controlled by a new tunable
  x86_memset_non_temporal_threshold.

Deprecated and removed features, and other changes affecting compatibility:

* Architectures which use a 32-bit seconds-since-epoch field in struct
  lastlog, struct utmp, struct utmpx (such as i386, powerpc64le, rv32,
  rv64, x86-64) switched from a signed to an unsigned type for that
  field.  This allows these fields to store timestamps beyond the year
  2038, until the year 2106.  Please note that applications are still
  expected to migrate off the interfaces declared in <utmp.h> and
  <utmpx.h> (except for login_tty) due to locking and session management
  problems.

* __rseq_size now denotes the size of the active rseq area (20 bytes
  initially), not the size of struct rseq (32 bytes initially).

Security related changes:

The following CVEs were fixed in this release, details of which can be
found in the advisories directory of the release tarball:

  GLIBC-SA-2024-0004:
    ISO-2022-CN-EXT: fix out-of-bound writes when writing escape
    sequence (CVE-2024-2961)

  GLIBC-SA-2024-0005:
    nscd: Stack-based buffer overflow in netgroup cache (CVE-2024-33599)

  GLIBC-SA-2024-0006:
    nscd: Null pointer crash after notfound response (CVE-2024-33600)

  GLIBC-SA-2024-0007:
    nscd: netgroup cache may terminate daemon on memory allocation
    failure (CVE-2024-33601)

  GLIBC-SA-2024-0008:
    nscd: netgroup cache assumes NSS callback uses in-buffer strings
    (CVE-2024-33602)

The following bugs were resolved with this release:

  [19622] network: Support aliasing with struct sockaddr
  [21271] localedata: cv_RU: update translations
  [23774] localedata: lv_LV collates Y/y incorrectly
  [23865] string: wcsstr is quadratic-time
  [25119] localedata: Change Czech weekday names to lowercase
  [27777] stdio: fclose does a linear search, takes ages when many FILE*
    are opened
  [29770] libc: prctl does not match manual page ABI on powerpc64le-
    linux-gnu
  [29845] localedata: Update hr_HR locale currency to €
  [30701] time: getutxent misbehaves on 32-bit x86 when _TIME_BITS=64
  [31316] build: Fails test misc/tst-dirname "Didn't expect signal from
    child: got `Illegal instruction'" on non SSE CPUs
  [31317] dynamic-link: [RISCV] static PIE crashes during self
    relocation
  [31325] libc: mips: clone3 is wrong for o32
  [31335] math: Compile glibc with -march=x86-64-v3 should disable FMA4
    multi-arch version
  [31339] libc: arm32 loader crash after cleanup in 2.36
  [31340] manual: A bad sentence in section 22.3.5 (resource.texi)
  [31357] dynamic-link: $(objpfx)tst-rtld-list-diagnostics.out rule
    doesn't work with test wrapper
  [31370] localedata: wcwidth() does not treat
    DEFAULT_IGNORABLE_CODE_POINTs as zero-width
  [31371] dynamic-link: x86-64: APX and Tile registers aren't preserved
    in ld.so trampoline
  [31372] dynamic-link: _dl_tlsdesc_dynamic doesn't preserve all caller-
    saved registers
  [31383] libc: _FORTIFY_SOURCE=3 and __fortified_attr_access vs size of
    0 and zero size types
  [31385] build: sort-makefile-lines.py doesn't check variable with _
    nor with "^# variable"
  [31402] libc: clone (NULL, NULL, ...) clobbers %r7 register on
    s390{,x}
  [31405] libc: Improve dl_iterate_phdr using _dl_find_object
  [31411] localedata: Add Latgalian locale
  [31412] build: GCC 6 failed to build i386 glibc on Fedora 39
  [31429] build: Glibc failed to build with -march=x86-64-v3
  [31468] libc: sigisemptyset returns true when the set contains signals
    larger than 34
  [31476] network: Automatic activation of single-request options break
    resolv.conf reloading
  [31479] libc: Missing #include <sys/rseq.h> in sched_getcpu.c may
    result in a loss of rseq acceleration
  [31501] dynamic-link: _dl_tlsdesc_dynamic_xsavec may clobber %rbx
  [31518] manual: documentation: FLT_MAX_10_EXP questionable text, evtl.
    wrong,
  [31530] localedata: Locale file for Moksha - mdf_RU
  [31553] malloc: elf/tst-decorate-maps fails on ppc64el
  [31596] libc: On the llvm-arm32 platform, dlopen("not_exist.so", -1)
    triggers segmentation fault
  [31600] math: math: x86 ceill traps when FE_INEXACT is enabled
  [31601] math: math: x86 floor traps when FE_INEXACT is enabled
  [31603] math: math: x86 trunc traps when FE_INEXACT is enabled
  [31612] libc: arc4random fails to fallback to /dev/urandom if
    getrandom is not present
  [31629] build: powerpc64: Configuring with "--with-cpu=power10" and
    'CFLAGS=-O2 -mcpu=power9' fails to build glibc
  [31640] dynamic-link: POWER10 ld.so crashes in
    elf_machine_load_address with GCC 14
  [31661] libc: NPROCESSORS_CONF and NPROCESSORS_ONLN not available in
    getconf
  [31676] dynamic-link: Configuring with CC="gcc -march=x86-64-v3"
    --with-rtld-early-cflags=-march=x86-64 results in linker failure
  [31677] nscd: nscd: netgroup cache: invalid memcpy under low
    memory/storage conditions
  [31678] nscd: nscd: Null pointer dereferences after failed netgroup
    cache insertion
  [31679] nscd: nscd: netgroup cache may terminate daemon on memory
    allocation failure
  [31680] nscd: nscd: netgroup cache assumes NSS callback uses in-buffer
    strings
  [31682] math: [PowerPC] Floating point exception error for math test
    test-ceil-except-2 test-floor-except-2 test-trunc-except-2
  [31686] dynamic-link: Stack-based buffer overflow in
    parse_tunables_string
  [31695] libc: pidfd_spawn/pidfd_spawnp leak an fd if clone3 succeeds
    but execve fails
  [31719] dynamic-link: --enable-hardcoded-path-in-tests doesn't work
    with -Wl,--enable-new-dtags
  [31730] libc: backtrace_symbols_fd prints different strings than
    backtrace_symbols returns
  [31753] build: FAIL: link-static-libc with GCC 6/7/8
  [31755] libc: procutils_read_file doesn't start with a leading
    underscore
  [31756] libc: write_profiling is only in libc.a
  [31757] build: Should XXXf128_do_not_use functions be excluded?
  [31759] math: Extra nearbyint symbols in libm.a
  [31760] math: Missing math functions
  [31764] build: _res_opcodes should be a compat symbol only
  [31765] dynamic-link: _dl_mcount_wrapper is exported without prototype
  [31766] stdio: _IO_stderr_ _IO_stdin_ _IO_stdout should be compat
    symbols
  [31768] string: Extra stpncpy symbol in libc.a
  [31770] libc: clone3 is in libc.a
  [31774] libc: Missing __isnanf128 in libc.a
  [31775] math: Missing exp10 exp10f32x exp10f64 fmod fmodf fmodf32
    fmodf32x fmodf64 in libm.a
  [31777] string: Extra memchr strlen symbols in libc.a
  [31781] math: Missing math functions in libm.a
  [31782] build: Test build failure with recent GCC trunk (x86/tst-cpu-
    features-supports.c:69:3: error: parameter to builtin not valid:
    avx5124fmaps)
  [31785] string: loongarch: Extra strnlen symbols in libc.a
  [31786] string: powerpc: Extra strchrnul and strncasecmp_l symbols in
    libc.a
  [31787] math: powerpc: Extra llrintf, llrintf, llrintf32, and
    llrintf32 symbols in libc.a
  [31788] libc: microblaze: Extra cacheflush symbol in libc.a
  [31789] libc: powerpc: Extra versionsort symbol in libc.a
  [31790] libc: s390: Extra getutent32, getutent32_r, getutid32,
    getutid32_r, getutline32, getutline32_r, getutmp32, getutmpx32,
    getutxent32, getutxid32, getutxline32, pututline32, pututxline32,
    updwtmp32, updwtmpx32 in libc.a
  [31797] build: g++ -static requirement should be able to opt-out
  [31798] libc: pidfd_getpid.c is miscompiled by GCC 6.4
  [31802] time: difftime is pure not const
  [31808] time: The supported time_t range is not documented.
  [31840] stdio: Memory leak in _IO_new_fdopen (fdopen) on seek failure
  [31867] build: "CPU ISA level is lower than required" on SSE2-free
    CPUs
  [31876] time: "Date and time" documentation fixes for POSIX.1-2024 etc
  [31883] build: ISA level support configure check relies on bashism /
    is otherwise broken for arithmetic
  [31892] build: Always install mtrace.
  [31917] libc: clang mq_open fortify wrapper does not handle 4 argument
    correctly
  [31927] libc: clang open fortify wrapper does not handle argument
    correctly
  [31931] time: tzset may fault on very short TZ string
  [31934] string: wcsncmp crash on s390x on vlbb instruction
  [31963] stdio: Crash in _IO_link_in within __gcov_exit
  [31965] dynamic-link: rseq extension mechanism does not work as
    intended
  [31980] build: elf/tst-tunables-enable_secure-env fails on ppc

Release Notes
=============

https://sourceware.org/glibc/wiki/Release/2.40

Contributors
============

This release was made possible by the contributions of many people.
The maintainers are grateful to everyone who has contributed
changes or bug reports.  These include:

Adam Sampson
Adhemerval Zanella
Alejandro Colomar
Alexandre Ferrieux
Amrita H S
Andreas K. Hüttel
Andreas Schwab
Andrew Pinski
Askar Safin
Aurelien Jarno
Avinal Kumar
Carlos Llamas
Carlos O'Donell
Charles Fol
Christoph Müllner
DJ Delorie
Daniel Cederman
Darius Rad
David Paleino
Dragan Stanojević (Nevidljivi)
Evan Green
Fangrui Song
Flavio Cruz
Florian Weimer
Gabi Falk
H.J. Lu
Jakub Jelinek
Jan Kurik
Joe Damato
Joe Ramsay
Joe Simmons-Talbott
Joe Talbott
John David Anglin
Joseph Myers
Jules Bertholet
Julian Zhu
Junxian Zhu
Konstantin Kharlamov
Luca Boccassi
Maciej W. Rozycki
Manjunath Matti
Mark Wielaard
MayShao-oc
Meng Qinggang
Michael Jeanson
Michel Lind
Mike FABIAN
Mohamed Akram
Noah Goldstein
Palmer Dabbelt
Paul Eggert
Philip Kaludercic
Samuel Dobron
Samuel Thibault
Sayan Paul
Sergey Bugaev
Sergey Kolosov
Siddhesh Poyarekar
Simon Chopin
Stafford Horne
Stefan Liebler
Sunil K Pandey
Szabolcs Nagy
Wilco Dijkstra
Xi Ruoyao
Xin Wang
Yinyu Cai
YunQiang Su

We would like to call out the following and thank them for their
tireless patch review:

Adhemerval Zanella
Alejandro Colomar
Andreas K. Hüttel
Arjun Shankar
Aurelien Jarno
Bruno Haible
Carlos O'Donell
DJ Delorie
Dmitry V. Levin
Evan Green
Fangrui Song
Florian Weimer
H.J. Lu
Jonathan Wakely
Joseph Myers
Mathieu Desnoyers
Maxim Kuvyrkov
Michael Jeanson
Noah Goldstein
Palmer Dabbelt
Paul Eggert
Paul E. Murphy
Peter Bergner
Philippe Mathieu-Daudé
Sam James
Siddhesh Poyarekar
Simon Chopin
Stefan Liebler
Sunil K Pandey
Szabolcs Nagy
Xi Ruoyao
Zack Weinberg

--
Andreas K. Hüttel
dilfridge@gentoo.org
Gentoo Linux developer
(council, toolchain, base-system, perl, releng)
https://wiki.gentoo.org/wiki/User:Dilfridge
https://www.akhuettel.de/

Open master branch for glibc 2.15 development

Open master branch for glibc 2.40 development

The GNU C Library version 2.39 is now available

The GNU C Library
=================

The GNU C Library version 2.39 is now available.

The GNU C Library is used as *the* C library in the GNU system and
in GNU/Linux systems, as well as many other systems that use Linux
as the kernel.

The GNU C Library is primarily designed to be a portable
and high performance C library.  It follows all relevant
standards including ISO C11 and POSIX.1-2017.  It is also
internationalized and has one of the most complete
internationalization interfaces known.

The GNU C Library webpage is at http://www.gnu.org/software/libc/

Packages for the 2.39 release may be downloaded from:
        http://ftpmirror.gnu.org/libc/
        http://ftp.gnu.org/gnu/libc/

The mirror list is at http://www.gnu.org/order/ftp.html

Distributions are encouraged to track the release/* branches
corresponding to the releases they are using.  The release
branches will be updated with conservative bug fixes and new
features while retaining backwards compatibility.

NEWS for version 2.39
=====================

Major new features:

* A new tunable, glibc.cpu.plt_rewrite, can be used to enable PLT
  rewrite on x86-64.  When enabled with non-lazy binding, the dynamic
  linker will rewrite indirect branches in PLT with direct branches.

* Sync with Linux kernel 6.6 shadow stack interface.  The --enable-cet
  configure option is only supported on x86-64.

* struct statvfs now has an f_type member, equal to the f_type statfs member;
  on the Hurd this was always available under a reserved name,
  and under Linux a spare has been allocated: it was always zero
  in previous versions of glibc, and zero is not a valid result.

* On Linux, the functions posix_spawnattr_getcgroup_np and
  posix_spawnattr_setcgroup_np have been added, along with the
  POSIX_SPAWN_SETCGROUP flag.  They allow posix_spawn and posix_spawnp
  to set the cgroupv2 in the new process in a race-free manner.  These
  functions are GNU extensions and require a kernel with clone3 support.

* On Linux, the pidfd_spawn and pidfd_spawp functions have been added.
  They have a similar prototype and semantic as posix_spawn, but instead of
  returning a process ID, they return a file descriptor that can be used
  along other pidfd functions (like pidfd_send_signal, poll, or waitid).
  The pidfd functionality avoids the issue of PID reuse with the traditional
  posix_spawn interface.

* On Linux, the pidfd_getpid function has been added.  It allows retrieving
  the process ID associated with the process file descriptor created by
  pid_spawn, fork_np, or pidfd_open.

* scanf-family functions now support the wN format length modifiers for
  arguments pointing to types intN_t, int_leastN_t, uintN_t or
  uint_leastN_t (for example, %w32d to read int32_t or int_least32_t in
  decimal, or %w32x to read uint32_t or uint_least32_t in hexadecimal)
  and the wfN format length modifiers for arguments pointing to types
  int_fastN_t or uint_fastN_t, as specified in draft ISO C2X.

* A new tunable, glibc.mem.decorate_maps, can be used to add additional
  information on underlying memory allocated by the glibc (for instance,
  on thread stack created by pthread_create or memory allocated by
  malloc).

* The <stdbit.h> header has been added from ISO C2X, with
  stdc_leading_zeros, stdc_leading_ones, stdc_trailing_zeros,
  stdc_trailing_ones, stdc_first_leading_zero, stdc_first_leading_one,
  stdc_first_trailing_zero, stdc_first_trailing_one, stdc_count_zeros,
  stdc_count_ones, stdc_has_single_bit, stdc_bit_width, stdc_bit_floor
  and stdc_bit_ceil function families, each having functions for
  unsigned char, unsigned short, unsigned int, unsigned long int and
  unsigned long long int, and a type-generic macro.

* On AArch64 new symbols were added to libmvec and now math.h has
  annotations to allow GCC 9 or newer to auto-vectorize calls to the
  following scalar math functions when -ffast-math is specified:
  acos, acosf, asin, asinf, atan, atanf, atan2, atan2f, cos, cosf,
  exp, expf, exp10, exp10f, exp2, exp2f, expm1, expm1f, log, logf,
  log10, log10f, log1p, log1pf, log2, log2f, sin, sinf, tan, tanf.

Deprecated and removed features, and other changes affecting compatibility:

* The ldconfig program now skips file names containing ';' or ending in
  ".dpkg.tmp" or ".dpkg.new", to avoid examining temporary files created
  by the RPM and dpkg package managers.

* libcrypt has been removed from the GNU C Library.  The configure
  options "--enable-crypt" and "--enable-nss-crypt" are no longer
  available.  <crypt.h>, libcrypt.a, and libcrypt.so.1 will not be
  installed.  For now <unistd.h> continues to declare the crypt
  function by default, to avoid introducing vulnerabilities into
  existing applications due to a missing prototype.  This declaration
  is deprecated and may be removed in a future glibc release.

  The replacement for libcrypt is libxcrypt, maintained separately from
  GNU libc, but available under compatible licensing terms, and providing
  binary backward compatibility with the former libcrypt.  It is currently
  distributed from <https://github.com/besser82/libxcrypt/>.

  As a consequence of this removal, GNU libc no longer makes any use of
  the NSS cryptography library (Network Security Services; not to be
  confused with Name Service Switch).  Distributors of binary packages
  of GNU libc are advised to check whether their build processes can be
  simplified.

* The dynamic linker calls the malloc and free functions in more cases
  during TLS access if a shared object with dynamic TLS is loaded and
  unloaded.  This can result in an infinite recursion if a malloc
  replacement library or its dependencies use dynamic TLS instead of
  initial-exec TLS.

* The ia64*-*-linux-gnu configurations are no longer supported.

Changes to build and runtime requirements:

* Building on LoongArch requires at a minimum binutils 2.41 for vector
  instructions.

Security related changes:

The following CVEs were fixed in this release, details of which can be
found in the advisories directory of the release tarball:

  GLIBC-SA-2023-0002:
    getaddrinfo: Stack read overflow in no-aaaa mode (CVE-2023-4527)

  GLIBC-SA-2023-0003:
    getaddrinfo: Potential use-after-free (CVE-2023-4806)

  GLIBC-SA-2023-0004:
    tunables: local privilege escalation through buffer overflow
    (CVE-2023-4911)

  GLIBC-SA-2024-0001:
    syslog: Heap buffer overflow in __vsyslog_internal (CVE-2023-6246)

  GLIBC-SA-2024-0002:
    syslog: Heap buffer overflow in __vsyslog_internal (CVE-2023-6779)

  GLIBC-SA-2024-0003:
    syslog: Integer overflow in __vsyslog_internal (CVE-2023-6780)

The following bugs are resolved with this release:

  [14522] localedata: fy_DE: LC_IDENTIFICATION data looks weird
  [19305] libc: qsort() should return early if (nmemb <= 1)
  [19479] localedata: gbm_IN: new Garhwali Locale
  [19924] dynamic-link: TLS performance degradation after dlopen
  [19956] localedata: ssy_ER: rename from aa_ER@saaho
  [21719] libc: stdlib/msort : optimizing merge sort
  [22526] localedata: th_TH  LC_COLLATE does not use copy "iso14651_t1"
  [23012] localedata: el_GR: Greece now uses the 24h format for time
  [23172] localedata: miq_NI: Provide actually abbreviated month names
  [24006] localedata: Cyclic dependencies via copy in locales
  [24013] localedata: am_pm definitions for es_ES
  [24386] localedata: crh_RU: new locale
  [24877] localedata: [Redundant Data] Remove redundant data between
    en_NZ and en_AU
  [25868] localedata: Incorrect trailing spaces in weekday names for
    nn_NO
  [26752] localedata: Please add the new locale zgh_MA
  [27069] dynamic-link: Need a way to tell if a tunable is set by user
  [27163] localedata: Error on test glk_IR with localedef
  [27312] localedata: su_ID: new Sundanese locale
  [27547] manual: "Summary of malloc-Related Functions" shows wrong
    argument order for  `aligned_alloc` and `memalign`
  [27574] libc: glibc should probably not define __WORDSIZE=64 for
    __sparcv9
  [27601] localedata: License information update in
    localedata/locales/ast_ES
  [28558] localedata: it_IT LC_MONETARY outdated p_cs_precedes and
    n_cs_precedes
  [28787] localedata: Add information for Occitan
  [29039] dynamic-link: Corrupt DTV after reuse of a TLS module ID
    following dlclose with unused TLS
  [29486] localedata: New Zealand locales (en_NZ & mi_NZ) first day of
    week should be Monday
  [29504] localedata: Incorrect/misleading Time Format For ms_MY (AM/PM)
  [29506] localedata: UTF-8 HANGUL SYLLABLE bugs
  [30349] libc: Support returning a pidfd from posix_spawn()
  [30412] localedata: d_t_fmt in id_ID uses %r placeholder but am_pm and
    t_fmt_ampm are undefined
  [30605] localedata: New locale for Komi language
  [30649] localedata: [PATCH] Add transliteration of common emojis to
    smileys
  [30694] locale: The iconv program no longer tells the user which given
    encoding name was wrong
  [30709] nscd: nscd fails to build with cleanup handler if built with
    -fexceptions
  [30737] libc: fdopendir() is not robust - returns bogus DIR* instead
    of flagging an error
  [30740] build: [m68k] undefined reference to
    `_wordcopy_fwd_dest_aligned'
  [30745] libc: Slight bug in cache info codes for x86
  [30750] network: Unaligned accesses in resolver
  [30773] math: [m68k] busybox awk is broken (lshift.S related)
  [30789] libc: [2.38 Regression] sem_open will fail on multithreaded
    scenarios when semaphore file doesn't exist (O_CREAT)
  [30800] nscd: Improper assert in prune_cache triggers if clock jumps
    backwards
  [30804] libc: F_GETLK, F_SETLK, and F_SETLKW value change for
    powerpc64 with -D_FILE_OFFSET_BITS=64
  [30842] network: Stack read overflow in getaddrinfo in no-aaaa mode
    (CVE-2023-4527)
  [30843] network: potential use-after-free in getcanonname
    (CVE-2023-4806)
  [30854] localedata: Update locale data to Unicode 15.1.0
  [30884] network: Memory leak in getaddrinfo after fix for bug 30843
    (CVE-2023-5156)
  [30932] libc: Fortify Source has false-positives when too many files
    are open
  [30945] malloc: Core affinity setting incurs lock contentions between
    threads
  [30960] math: signed integer overflow in
    glibc/sysdeps/s390/fpu/feenablxcpt.c
  [30964] locale: Number grouping check mishandles multibyte thousands
    separator
  [30981] dynamic-link: dlclose does not properly implement force-first
    handling
  [30988] math: fesetexcept raises floating-point exception traps on
    ppc, ppc64, ppc64le
  [30989] math: fesetexcept raises floating-point exception traps on
    i386
  [30990] libc: fesetexceptflag raises floating-point exception traps on
    i386, x86_64
  [30998] math: fesetexceptflag clears too many floating-point exception
    flags on alpha
  [31019] manual: The documentation of feenableexcept is incomplete
  [31022] math: feupdateenv (FE_DFL_ENV) crashes on riscv
  [31035] libc: Library search path terminates on relative non-directory
    name
  [31042] libc: [s390x] .init and .fini padding
  [31068] libc: sysdeps: sparc: invalid data access in memset due to
    regression
  [31078] manual: Code example in "Noncanonical Mode Example" has unused
    'char *name;'
  [31086] localedata: Errors in Tibetan, Dzongkha data
  [31113] string: Wrong unwind information for rawmemchr on aarch64
  [31151] libc: [RISC-V] missing support for profile/audit PLT setup
  [31163] nss: getaddrinfo returns EAI_NONAME in oom situation
  [31183] stdio: Wide stream buffer size reduced MB_LEN_MAX bytes after
    bug 17522 fix
  [31184] dynamic-link: FAIL: elf/tst-tlsgap
  [31185] dynamic-link: Incorrect thread point access in
    _dl_tlsdesc_undefweak and _dl_tlsdesc_dynamic
  [31187] dynamic-link: Some CET tests fail with GCC 14
  [31204] localedata: Fix decimal point and thousands separator for
    uz_UZ
  [31205] localedata: Inconsistent (mon_)grouping formats
  [31218] dynamic-link: PLT rewrite overflows large displacement on x32
  [31221] localedata: Add localedata for ISO code "tok" (Toki Pona)
  [31230] dynamic-link: PLT rewrite failed without SELinux
  [31239] localedata: anp_IN locale: abbreviated month names are the
    same as the full month names
  [31244] nptl: pthread_cancel hangs on sparc32
  [31257] localedata: Sync with  CLDR: “Turkey” -> “Türkiye”
  [31266] string: sparc: string/tst-memmove-overflow fails on 32-bit
    sparcv9
  [31276] libc: Wrong condition for heap allocation in qsort_r

Release Notes
=============

https://sourceware.org/glibc/wiki/Release/2.39

Contributors
============

This release was made possible by the contributions of many people.
The maintainers are grateful to everyone who has contributed
changes or bug reports.  These include:

Adam Jackson
Adhemerval Zanella Netto
Amrita H S
Andreas K. Hüttel
Andreas Larsson
Andreas Schwab
Arjun Shankar
Aurelien Jarno
Bruno Haible
Bruno Victal
Carlos O'Donell
Christoph Müllner
Colin Leroy-Mira
DJ Delorie
Daniel Cederman
Dennis Brendel
Flavio Cruz
Florian Weimer
Frederic Cambus
Gaël PORTAY
Guy-Fleury Iteriteka
H.J. Lu
Hector Martin
Jan Palus
Janet Blackquill
Joe Ramsay
Joe Simmons-Talbott
John David Anglin
Joseph Myers
Kir Kolyshkin
Kuan-Wei Chiu
Ludwig Rydberg
MAHESH BODAPATI
Mahesh Bodapati
Manjunath Matti
Mark Wielaard
Matthew Sterrett
Maxim Kuvyrkov
Mike FABIAN
Noah Goldstein
Paul Eggert
Qingqing Li
Romain Geissler
RushingAlien
Sajan Karumanchi
Sam James
Samuel Thibault
Sergei Trofimovich
Sergey Bugaev
Sergio Durigan Junior
Siddhesh Poyarekar
Simon Chopin
Stefan Liebler
Sunil K Pandey
Szabolcs Nagy
Tobias Klauser
Valery Ushakov
Volker Weißmann
Wilco Dijkstra
Xi Ruoyao
Yang Yujie
Yanzhang Wang
Ying Huang
caiyinyu
dengjianbo
lijianglin
наб

We would like to call out the following and thank them for their
tireless patch review:

Adhemerval Zanella
Alejandro Colomar
Andreas K. Hüttel
Andreas Schwab
Arjun Shankar
Carlos O'Donell
DJ Delorie
Florian Weimer
H.J. Lu
Joe Simmons-Talbott
Mike Fabian
Noah Goldstein
Paul E. Murphy
Peter Bergner
Premachandra Mallappa
Rajalakshmi Srinivasaraghavan
Samuel Thibault
Siddhesh Poyarekar
Stefan Liebler
Sunil K Pandey
Szabolcs Nagy

--
Andreas K. Hüttel
dilfridge@gentoo.org
Gentoo Linux developer
(council, toolchain, base-system, perl, releng)
https://wiki.gentoo.org/wiki/User:Dilfridge
https://www.akhuettel.de/

Open master branch for glibc 2.39 development

The GNU C Library version 2.38 is now available

The GNU C Library
=================

The GNU C Library version 2.38 is now available.

The GNU C Library is used as *the* C library in the GNU system and
in GNU/Linux systems, as well as many other systems that use Linux
as the kernel.

The GNU C Library is primarily designed to be a portable
and high performance C library.  It follows all relevant
standards including ISO C11 and POSIX.1-2017.  It is also
internationalized and has one of the most complete
internationalization interfaces known.

The GNU C Library webpage is at http://www.gnu.org/software/libc/

Packages for the 2.38 release may be downloaded from:
        http://ftpmirror.gnu.org/libc/
        http://ftp.gnu.org/gnu/libc/

The mirror list is at http://www.gnu.org/order/ftp.html

Distributions are encouraged to track the release/* branches
corresponding to the releases they are using.  The release
branches will be updated with conservative bug fixes and new
features while retaining backwards compatibility.

NEWS for version 2.38
=====================

Major new features:

* When C2X features are enabled and the base argument is 0 or 2, the
  following functions support binary integers prefixed by 0b or 0B as
  input: strtol, strtoll, strtoul, strtoull, strtol_l, strtoll_l,
  strtoul_l, strtoull_l, strtoimax, strtoumax, strtoq, strtouq, wcstol,
  wcstoll, wcstoul, wcstoull, wcstol_l, wcstoll_l, wcstoul_l,
  wcstoull_l, wcstoimax, wcstoumax, wcstoq, wcstouq.  Similarly, the
  following functions support binary integers prefixed by 0b or 0B as
  input to the %i format: fscanf, scanf, sscanf, vscanf, vsscanf,
  vfscanf, fwscanf, wscanf, swscanf, vfwscanf, vwscanf, vswscanf; those
  functions also support the %b format for binary integers, with or
  without such a prefix and independent of standards mode.

* PRIb*, PRIB* and SCNb* macros from C2X have been added to
  <inttypes.h>.

* printf-family functions now support the wN format length modifiers for
  arguments of type intN_t, int_leastN_t, uintN_t or uint_leastN_t (for
  example, %w32d to print int32_t or int_least32_t in decimal, or %w32x
  to print uint32_t or uint_least32_t in hexadecimal) and the wfN format
  length modifiers for arguments of type int_fastN_t or uint_fastN_t, as
  specified in draft ISO C2X.

* A new tunable, glibc.pthread.stack_hugetlb, can be used to disable
  Transparent Huge Pages (THP) in stack allocation at pthread_create.

* Support for x86_64 running on Hurd has been added.  This port requires
  as least binutils 2.40 and GCC 13:

    - x86_64-gnu

* Vector math library libmvec support has been added to AArch64.  It
  requires GCC version >= 10.1.0.  It can be disabled via
  "--disable-mathvec", however that is not a supported configuration as
  it changes the ABI. The symbol names follow the AArch64 vector ABI,
  they are declared in math.h and have to be called manually at this point.

* The strlcpy and strlcat functions have been added.  They are derived
  from OpenBSD, and are expected to be added to a future POSIX version.

* A new configure option, "--enable-fortify-source", can be used to build the
  GNU C Library with _FORTIFY_SOURCE. The level of fortification can either be
  provided, or is set to the highest value supported by the compiler. If not
  explicitly enabled, then fortify source is forcibly disabled so to keep
  original behavior unchanged.

Deprecated and removed features, and other changes affecting compatibility:

* libcrypt is no longer built by default; one may use the "--enable-crypt"
  option to build libcrypt.  libcrypt is likely to be removed from the
  GNU C Library in a future release, so it is recommended that
  applications port away from it to an alternative such as libxcrypt.

* In the Linux kernel for the hppa/parisc architecture some of the
  MADV_XXX constants were changed to have the same values as the other
  architectures.  New programs compiled with this glibc version and which
  use the madvise call will require at least Linux kernel version 6.2,
  alternatively stable kernels from versions 6.1.6, 5.15.87, 5.10.163,
  5.4.228, 4.19.270 or 4.14.303.

* The "--disable-experimental-malloc" option is no longer available.  The
  per-thread cache can still be disabled per-application using tunables
  (glibc.malloc.tcache_count set to zero).

* The configure option "--enable-tunables" has been removed.  The tunable
  feature is now always enabled.

Changes to build and runtime requirements:

* Building libmvec on AArch64 requires at a minimum GCC 10.1.0 for SVE
  ACLE.

Security related changes:

  CVE-2023-25139: When the printf family of functions is called with a
  format specifier that uses an <apostrophe> (enable grouping) and a
  minimum width specifier, the resulting output could be larger than
  reasonably expected by a caller that computed a tight bound on the
  buffer size.  The resulting larger than expected output could result
  in a buffer overflow in the printf family of functions.

The following bugs are resolved with this release:

  [178] string: Please add strlcpy and strlcat (attached)
  [14697] nptl: Behavior of exit is nonconformant with respect to
    threads and stdio
  [15142] stdio: Missing locking in _IO_cleanup
  [18096] glob: null deref in wordexp/parse_dollars/parse_arith
  [18906] stdio: fopen: ccs value may affect open mode
  [24466] stdio: Feature request: provide special printf formats for
    intXX_t
  [25457] nss: hosts lookup fails for ipv4mapped ipv6 addresses
  [28519] libc: system and popen should pass "--" between /bin/sh and
    argument
  [29016] stdio: popen() sets errno to ENOMEM when shell does not exist
  [29591] string: wcsnlen length can overflow in page cross case.
  [30053] time: strftime %s returns -1 after 2038 on 32 bits systems
  [30068] stdio: incorrect printf output for integers with thousands
    separator and width field (CVE-2023-25139)
  [30111] time: support_descriptors_list fails after 2038 on 32 bits
    systems
  [30125] dynamic-link: [regression, bisected] glibc-2.37 creates new
    symlink for libraries without soname
  [30130] math: [s390] The _FPU_SETCW macro yields compile error with
    Clang
  [30156] time: Potential ntp_gettime abi break
  [30235] libc: Missing fallback in getlogin if loginuid is unset
  [30258] dynamic-link: sprof cannot read and display shared object
    profiling data correctly
  [30263] libc: Add test coverage for abs(), labs(), and llabs().
  [30305] math: Incorrect asm constraint in feraiseexcept on x86-64
  [30402] libc: FAIL: elf/tst-glibcelf
  [30425] dynamic-link: Symbol lookup during dlclose may fail
    unnecessarily
  [30435] dynamic-link: Root dir wrongly marked as nonexist in open_path
  [30477] libc: [RISCV]: time64 does not work on riscv32
  [30515] dynamic-link: _dl_find_object incorrectly returns 1 during
    early startup
  [30527] network: resolv_conf lock not unlocked on allocation failure
  [30550] math: powerpc64le: GCC-specific code for isinf() is being used
    on clang
  [30555] string: strerror can incorrectly return NULL
  [30579] malloc: trim_threshold in realloc lead to high memory usage
  [30662] nscd: Group and password cache use errno in place of errval

Release Notes
=============

https://sourceware.org/glibc/wiki/Release/2.38

Contributors
============

This release was made possible by the contributions of many people.
The maintainers are grateful to everyone who has contributed
changes or bug reports.  These include:

Adam Yi
Adhemerval Zanella Netto
Alejandro Colomar
Andreas Arnez
Andreas K. Hüttel
Andreas Schwab
Arjun Shankar
Arsen Arsenović
Aurelien Jarno
Ayush Mittal
Bert Wesarg
Carlos O'Donell
Cupertino Miranda
DJ Delorie
Dridi Boukelmoune
Flavio Cruz
Florian Weimer
Frédéric Bérat
Gavin Smith
Guy-Fleury Iteriteka
H.J. Lu
Hsiangkai Wang
Indu Bhagat
Jan-Benedict Glaw
Joan Bruguera
Joe Ramsay
Joe Simmons-Talbott
John David Anglin
Joseph Myers
Julian Squires
Jun Tang
Kacper Piwiński
Kito Cheng
Mahesh Bodapati
Martin Coufal
Maxim Kuvyrkov
Nisha Menon
Noah Goldstein
Paul Eggert
Paul Pluzhnikov
Paul Zimmermann
Pavel Kozlov
Qihao Chencao
Qixing ksyx Xue
Richard Henderson
Robert Morell
Romain Geissler
Ronan Pigott
Roy Eldar
Sachin Monga
Sam James
Samuel Thibault
Sergey Bugaev
Siddhesh Poyarekar
Simon Kissane
Stefan Liebler
Szabolcs Nagy
Tulio Magno Quites Machado Filho
Vitaly Buka
Wilco Dijkstra
Xi Ruoyao
Ying Huang
abushwang
caiyinyu
quxm
Леонид Юрьев (Leonid Yuriev)
наб

We would like to call out the following and thank them for their
tireless patch review:

Adhemerval Zanella
Andreas K. Hüttel
Arjun Shankar
Aurelien Jarno
Carlos Eduardo Seo
Carlos O'Donell
DJ Delorie
Florian Weimer
Joe Simmons-Talbott
Noah Goldstein
Palmer Dabbelt
Paul E. Murphy
Rajalakshmi Srinivasaraghavan
Richard Henderson
Siddhesh Poyarekar
Szabolcs Nagy
Wilco Dijkstra

--
Andreas K. Hüttel
dilfridge@gentoo.org
Gentoo Linux developer
(council, toolchain, base-system, perl, releng)
https://wiki.gentoo.org/wiki/User:Dilfridge
https://www.akhuettel.de/

Open master branch for glibc 2.38 development

The GNU C Library version 2.37 is now available

The GNU C Library
=================

The GNU C Library version 2.37 is now available.

The GNU C Library is used as *the* C library in the GNU system and
in GNU/Linux systems, as well as many other systems that use Linux
as the kernel.

The GNU C Library is primarily designed to be a portable
and high performance C library.  It follows all relevant
standards including ISO C11 and POSIX.1-2017.  It is also
internationalized and has one of the most complete
internationalization interfaces known.

The GNU C Library webpage is at http://www.gnu.org/software/libc/

Packages for the 2.37 release may be downloaded from:
        http://ftpmirror.gnu.org/libc/
        http://ftp.gnu.org/gnu/libc/

The mirror list is at http://www.gnu.org/order/ftp.html

NEWS for version 2.37
=====================

Major new features:

* The getent tool now supports the --no-addrconfig option. The output of
  getent with --no-addrconfig may contain addresses of families not
  configured on the current host i.e. as-if you had not passed
  AI_ADDRCONFIG to getaddrinfo calls.

Deprecated and removed features, and other changes affecting compatibility:

* The dynamic linker no longer loads shared objects from the "tls"
  subdirectories on the library search path or the subdirectory that
  corresponds to the AT_PLATFORM system name, or employs the legacy AT_HWCAP
  search mechanism, which was deprecated in version 2.33.

Security related changes:

  CVE-2022-39046: When the syslog function is passed a crafted input
  string larger than 1024 bytes, it reads uninitialized memory from the
  heap and prints it to the target log file, potentially revealing a
  portion of the contents of the heap.

The following bugs are resolved with this release:

  [12154] network: Cannot resolve hosts which have wildcard aliases
  [12165] libc: readdir: Do not skip entries with zero d_ino values
  [19444] build: build failures with -O1 due to -Wmaybe-uninitialized
  [24774] nptl: pthread_rwlock_timedwrlock stalls on ARM
  [24816] nss: nss/tst-nss-files-hosts-long fails when no interface has
    AF_INET6 address (ie docker)
  [27087] stdio: PowerPC: Redefinition error with Clang from IEEE
    redirection headers
  [28846] network: CMSG_NXTHDR may trigger -Wstrict-overflow warning
  [28937] dynamic-link: New DSO dependency sorter does not put new map
    first if in a cycle
  [29249] libc: csu/libc-tls.c:202: undefined reference to
    `_startup_fatal_not_constant'
  [29305] network: Inefficient buffer space usage in nss_dns for
    gethostbyname and other functions
  [29375] libc: don't hide MAP_ANONYMOUS behind _GNU_SOURCE
  [29402] nscd: nscd: No such file or directory
  [29415] nscd: getaddrinfo with AI_ADDRCONFIG returns addresses with
    wrong family
  [29427] dynamic-link: Inconsistency detected by ld.so: dl-printf.c:
    200: _dl_debug_vdprintf: Assertion `! "invalid format specifier"'
    failed!
  [29463] math: math/test-float128-y1 fails on x86_64
  [29485] build: Make hangs when the test misc/tst-pidfile returns
    FAIL_UNSUPPORTED
  [29490] dynamic-link: [bisected] new __brk_call causes dynamic loader
    segfault on alpha
  [29499] build: Check failed on misc/tst-glibcsyscalls while building
    for RISCV64 on a unmatched hardware
  [29501] build: Check failed on stdlib/tst-strfrom while building for
    RISCV64 on a unmatched hardware
  [29502] libc: alpha sys/acct.h out of date
  [29514] build: Need to use -fPIE not -fpie
  [29528] dynamic-link: __libc_early_init not called after dlmopen that
    reuses namespace
  [29536] libc: syslog fail to create large messages (CVE-2022-39046)
  [29537] libc: [2.34 regression]: Alignment issue on m68k when using
    futexes on qemu-user
  [29539] libc: LD_TRACE_LOADED_OBJECTS changed how vDSO library are
    printed
  [29544] libc: Regression in syslog(3) calls breaks RFC due to extra
    whitespace
  [29564] build: Incorrect way to change MAKEFLAGS in Makerules
  [29576] build: librtld.os: in function `_dl_start_profile':
    (.text+0x9444): undefined reference to `strcpy'
  [29578] libc: Definition of SUN_LEN() is wrong
  [29583] build: iconv failures on 32bit platform due to missing large
    file support
  [29600] dynamic-link: dlmopen hangs after loading certain libraries
  [29604] localedata: Update locale data to Unicode 15.0.0
  [29605] nscd: Regression in NSCD backend of getaddrinfo
  [29607] nscd: nscd repeatably crashes calling __strlen_avx2 when hosts
    cache is enabled
  [29611] string: Optimized AVX2 string functions unconditionally use
    BMI2 instructions
  [29624] malloc: errno is not cleared when entering main
  [29638] libc: stdlib: arc4random fallback is never used
  [29657] libc: Incorrect struct stat for 64-bit time on linux/generic
    platforms
  [29698] build: Configuring for AArch32 on ARMv8+ disables
    optimizations
  [29727] locale: __strtol_internal out-of-bounds read when parsing
    thousands grouping
  [29730] libc: broken y2038 support in fstatat on MIPS N64
  [29746] libc: ppoll() does not switch to __ppoll64 when
    -D_TIME_BITS=64 and -D_FORTIFY_SOURCE=2 is given on 32bit
  [29771] libc: Restore IPC_64 support in sysvipc *ctl functions
  [29780] build: possible parallel make issue in glibc-2.36 (siglist-
    aux.S: No such file or directory)
  [29864] libc: __libc_start_main() should obtain program headers
    address (_dl_phdr) from the auxv, not the ELF header.
  [29951] time: daylight variable not set correctly if last DST change
    coincides with offset change
  [30039] stdio: __vsprintf_internal does not handle unspecified buffer
    length in fortify mode

Release Notes
=============

https://sourceware.org/glibc/wiki/Release/2.37

Contributors
============

This release was made possible by the contributions of many people.
The maintainers are grateful to everyone who has contributed
changes or bug reports.  These include:

Adhemerval Zanella
Adhemerval Zanella Netto
Alan Modra
Alistair Francis
Andreas K. Hüttel
Andreas Schwab
Arjun Shankar
Aurelien Jarno
Carlos Eduardo Seo
Carlos O'Donell
Chenghua Xu
Cristian Rodríguez
Damien Zammit
Fabian Vogt
Fangrui Song
Felix Riemann
Flavio Cruz
Florian Weimer
H.J. Lu
Jakub Wilk
Javier Pello
John David Anglin
Joseph Myers
Jörg Sonnenberger
Kito Cheng
Letu Ren
Lucas A. M. Magalhaes
Ludovic Courtès
Martin Jansa
Martin Joerg
Michael Hudson-Doyle
Mike FABIAN
Noah Goldstein
Paul Eggert
Paul Pluzhnikov
Qingqing Li
Rajalakshmi Srinivasaraghavan
Raphael Moreira Zinsly
Richard Henderson
Sajan Karumanchi
Samuel Thibault
Sergei Trofimovich
Sergey Bugaev
Shahab Vahedi
Siddhesh Poyarekar
Stefan Liebler
Sunil K Pandey
Szabolcs Nagy
Tom Honermann
Tulio Magno Quites Machado Filho
Vladislav Khmelevsky
Wilco Dijkstra
Xi Ruoyao
Xiaolin Tang
Xiaoming Ni
Xing Li
Yu Chien Peter Lin
YunQiang Su
Zong Li
caiyinyu
fanquake
Łukasz Stelmach
наб

We would like to call out the following and thank them for their
tireless patch review:

Adhemerval Zanella
Arjun Shankar
Aurelien Jarno
Carlos O'Donell
Cristian Rodríguez
DJ Delorie
Fangrui Song
Florian Weimer
H.J. Lu
Noah Goldstein
Palmer Dabbelt
Paul E. Murphy
Philippe Mathieu-Daudé
Premachandra Mallappa
Sam James
Siddhesh Poyarekar
Sunil K Pandey
Szabolcs Nagy
Tulio Magno Quites Machado Filho
Wilco Dijkstra
Yann Droneaud

Open master branch for glibc 2.37 development

The GNU C Library version 2.36 is now available

The GNU C Library
=================

The GNU C Library version 2.36 is now available.

The GNU C Library is used as *the* C library in the GNU system and
in GNU/Linux systems, as well as many other systems that use Linux
as the kernel.

The GNU C Library is primarily designed to be a portable
and high performance C library.  It follows all relevant
standards including ISO C11 and POSIX.1-2017.  It is also
internationalized and has one of the most complete
internationalization interfaces known.

The GNU C Library webpage is at http://www.gnu.org/software/libc/

Packages for the 2.36 release may be downloaded from:
        http://ftpmirror.gnu.org/libc/
        http://ftp.gnu.org/gnu/libc/

The mirror list is at http://www.gnu.org/order/ftp.html

NEWS for version 2.36
=====================

Major new features:

* Support for DT_RELR relative relocation format has been added to
  glibc.  This is a new ELF dynamic tag that improves the size of
  relative relocations in shared object files and position independent
  executables (PIE).  DT_RELR generation requires linker support for
  -z pack-relative-relocs option, which is supported for some targets
  in recent binutils versions.  Lazy binding doesn't apply to DT_RELR.

* On Linux, the pidfd_open, pidfd_getfd, and pidfd_send_signal functions
  have been added.  The pidfd functionality provides access to a process
  while avoiding the issue of PID reuse on tranditional Unix systems.

* On Linux, the process_madvise function has been added. It has the
  same functionality as madvise but alters the target process identified
  by the pidfd.

* On Linux, the process_mrelease function has been added.  It allows a
  caller to release the memory of a dying process.  The release of the
  memory is carried out in the context of the caller, using the caller's
  CPU affinity, and priority with CPU usage accounted to the caller.

* The “no-aaaa” DNS stub resolver option has been added.  System
  administrators can use it to suppress AAAA queries made by the stub
  resolver, including AAAA lookups triggered by NSS-based interfaces
  such as getaddrinfo.  Only DNS lookups are affected: IPv6 data in
  /etc/hosts is still used, getaddrinfo with AI_PASSIVE will still
  produce IPv6 addresses, and configured IPv6 name servers are still
  used.  To produce correct Name Error (NXDOMAIN) results, AAAA queries
  are translated to A queries.  The new resolver option is intended
  primarily for diagnostic purposes, to rule out that AAAA DNS queries
  have adverse impact.  It is incompatible with EDNS0 usage and DNSSEC
  validation by applications.

* On Linux, the fsopen, fsmount, move_mount, fsconfig, fspick, open_tree,
  and mount_setattr have been added.  They are part of the new Linux kernel
  mount APIs that allow applications to more flexibly configure and operate
  on filesystem mounts.  The new mount APIs are specifically designed to work
  with namespaces.

* localedef now accepts locale definition files encoded in UTF-8.
  Previously, input bytes not within the ASCII range resulted in
  unpredictable output.

* Support for the mbrtoc8 and c8rtomb multibyte/UTF-8 character conversion
  functions has been added per the ISO C2X N2653 and C++20 P0482R6 proposals.
  Support for the char8_t typedef has been added per the ISO C2X N2653
  proposal.  The functions are declared in uchar.h in C2X mode or when the
  _GNU_SOURCE macro or C++20 __cpp_char8_t feature test macro is defined.
  The char8_t typedef is declared in uchar.h in C2X mode or when the
  _GNU_SOURCE macro is defined and the C++20 __cpp_char8_t feature test macro
  is not defined (if __cpp_char8_t is defined, then char8_t is a builtin type).

* The functions arc4random, arc4random_buf, and arc4random_uniform have been
  added.  The functions wrap getrandom and/or /dev/urandom to return high-
  quality randomness from the kernel.

* Support for LoongArch running on Linux has been added.  This port requires
  as least binutils 2.38, GCC 12, and Linux 5.19.  Currently only hard-float
  ABI is supported:

    - loongarch64-linux-gnu

  The LoongArch ABI is 64-bit little-endian.

Deprecated and removed features, and other changes affecting compatibility:

* Support for prelink will be removed in the next release; this includes
  removal of the LD_TRACE_PRELINKING, and LD_USE_LOAD_BIAS, environment
  variables and their functionality in the dynamic loader.

* The Linux kernel version check has been removed along with the
  LD_ASSUME_KERNEL environment variable.  The minimum kernel used to built
  glibc is still provided through NT_GNU_ABI_TAG ELF note and also printed
  when libc.so is issued directly.

* On Linux, The LD_LIBRARY_VERSION environment variable has been removed.

The following bugs are resolved with this release:

  [14932] dynamic-link: dlsym(handle, "foo") and dlsym(RTLD_NEXT, "foo")
    return different result with versioned "foo"
  [16355] libc: syslog.h's SYSLOG_NAMES namespace violation and utter
    mess
  [23293] dynamic-link: aarch64: getauxval is broken when run as ld.so
    ./exe and ld.so adjusts argv on the stack
  [24595] nptl: [2.28 Regression]: Deadlock in atfork handler which
    calls dlclose
  [25744] locale: mbrtowc with Big5-HKSCS returns 2 instead of 1 when
    consuming the second byte of certain double byte characters
  [25812] stdio: Libio vtable protection is sometimes only partially
    enforced
  [27054] libc: pthread_atfork handlers that call pthread_atfork
    deadlock
  [27924] dynamic-link: ld.so: Support DT_RELR relative relocation
    format
  [28128] build: declare_symbol_alias doesn't work for assembly codes
  [28566] network: getnameinfo with NI_NOFQDN is not thread safe
  [28752] nss: Segfault in getpwuid when stat fails
  [28815] libc: realpath should not copy to resolved buffer on error
  [28828] stdio: fputwc crashes
  [28838] libc: FAIL: elf/tst-p_align3
  [28845] locale: ld-monetary.c should be updated to match ISO C and
    other standards.
  [28850] libc: linux: __get_nprocs_sched reads uninitialized memory
    from the stack
  [28852] libc: getaddrinfo leaks memory with AI_ALL
  [28853] libc: tst-spawn6 changes current foreground process group
    (breaks test isolation)
  [28857] libc: FAIL: elf/tst-audit24a
  [28860] build: --enable-kernel=5.1.0 build fails because of missing
    __convert_scm_timestamps
  [28865] libc: linux: _SC_NPROCESSORS_CONF and _SC_NPROCESSORS_ONLN are
    inaccurate without /sys and /proc
  [28868] dynamic-link: Dynamic loader DFS algorithm segfaults on
    missing libraries
  [28880] libc: Program crashes if date beyone 2038
  [28883] libc: sysdeps/unix/sysv/linux/select.c: __select64
    !__ASSUME_TIME64_SYSCALLS && !__ASSUME_PSELECT fails on Microblaze
  [28896] string: strncmp-avx2-rtm and wcsncmp-avx2-rtm fallback on non-
    rtm variants when avoiding overflow
  [28922] build: The .d dependency files aren't always generated
  [28931] libc: hosts lookup broken for SUCCESS=CONTINUE and
    SUCCESS=MERGE
  [28936] build: nm: No such file
  [28950] localedata: Add locale for ISO code "tok" (Toki Pona)
  [28953] nss: NSS lookup result can be incorrect if function lookup
    clobbers errno
  [28970] math: benchtest: libmvec benchmark doesn't build with make
    bench.
  [28991] libc: sysconf(_SC_NPROCESSORS_CONF) should read
    /sys/devices/system/cpu/possible
  [28993] libc: closefrom() iterates until max int if no access to
    /proc/self/fd/
  [28996] libc: realpath fails to copy partial result to resolved buffer
    on ENOENT and EACCES
  [29027] math: [ia64] fabs fails with sNAN input
  [29029] nptl: poll() spuriously returns EINTR during thread
    cancellation and with cancellation disabled
  [29030] string: GLIBC 2.35 regression - Fortify crash on certain valid
    uses of mbsrtowcs (*** buffer overflow detected ***: terminated)
  [29062] dynamic-link: Memory leak in _dl_find_object_update if object
    is promoted to global scope
  [29069] libc: fstatat64_time64_statx wrapper broken on MIPS N32 with
    -D_FILE_OFFSET_BITS=64 and -D_TIME_BITS=64
  [29071] dynamic-link: m68k: Removal of ELF_DURING_STARTUP optimization
    broke ld.so
  [29097] time: fchmodat does not handle 64 bit time_t for
    AT_SYMLINK_NOFOLLOW
  [29109] libc: posix_spawn() always returns 1 (EPERM) on clone()
    failure
  [29141] libc: _FORTIFY_SOURCE=3 fail for gcc 12/glibc 2.35
  [29162] string: [PATCH] string.h syntactic error:
    include/bits/string_fortified.h:110: error: expected ',' or ';'
    before '__fortified_attr_access'
  [29165] libc: [Regression] broken argv adjustment
  [29187] dynamic-link: [regression] broken argv adjustment for nios2
  [29193] math: sincos produces a different output than sin/cos
  [29197] string: __strncpy_power9() uses uninitialised register vs18
    value for filling after \0
  [29203] libc: daemon is not y2038 aware
  [29204] libc: getusershell is not 2038 aware
  [29207] libc: posix_fallocate fallback implementation is not y2038
    aware
  [29208] libc: fpathconf(_PC_ASYNC_IO) is not y2038 aware
  [29209] libc: isfdtype is not y2038 aware
  [29210] network: ruserpass is not y2038 aware
  [29211] libc: __open_catalog is not y2038 aware
  [29213] libc: gconv_parseconfdir is not y2038 aware
  [29214] nptl: pthread_setcanceltype fails to set type
  [29225] network: Mistyped define statement in socket/sys/socket.h in
    line 184
  [29274] nptl: __read_chk is not a cancellation point
  [29279] libc: undefined reference to `mbstowcs_chk' after
    464d189b9622932a75302290625de84931656ec0
  [29304] libc: mq_timedreceive does not handle 64 bit syscall return
    correct for !__ASSUME_TIME64_SYSCALLS
  [29403] libc: st_atim, st_mtim, st_ctim stat struct members are
    missing on microblaze with largefile

Release Notes
=============

https://sourceware.org/glibc/wiki/Release/2.36

Contributors
============

This release was made possible by the contributions of many people.
The maintainers are grateful to everyone who has contributed
changes or bug reports.  These include:

=Joshua Kinard
Adhemerval Zanella
Adhemerval Zanella Netto
Alan Modra
Andreas Schwab
Arjun Shankar
Arnout Vandecappelle (Essensium/Mind)
Carlos O'Donell
Cristian Rodríguez
DJ Delorie
Danila Kutenin
Darius Rad
Dmitriy Fedchenko
Dmitry V. Levin
Emil Soleyman-Zomalan
Fangrui Song
Florian Weimer
Gleb Fotengauer-Malinovskiy
Guilherme Janczak
H.J. Lu
Ilyahoo Proshel
Jason A. Donenfeld
Joan Bruguera
John David Anglin
Jonathan Wakely
Joseph Myers
José Bollo
Kito Cheng
Maciej W. Rozycki
Mark Wielaard
Matheus Castanho
Max Gautier
Michael Hudson-Doyle
Nicholas Guriev
Noah Goldstein
Paul E. Murphy
Raghuveer Devulapalli
Ricardo Bittencourt
Sam James
Samuel Thibault
Sergei Trofimovich
Siddhesh Poyarekar
Stafford Horne
Stefan Liebler
Steve Grubb
Su Lifan
Sunil K Pandey
Szabolcs Nagy
Tejas Belagod
Tom Coldrick
Tom Honermann
Tulio Magno Quites Machado Filho
WANG Xuerui
Wangyang Guo
Wilco Dijkstra
Xi Ruoyao
Xiaoming Ni
Yang Yanchao
caiyinyu

Open master branch for glibc 2.36 development

The GNU C Library version 2.35 is now available

The GNU C Library
=================

The GNU C Library version 2.35 is now available.

The GNU C Library is used as *the* C library in the GNU system and
in GNU/Linux systems, as well as many other systems that use Linux
as the kernel.

The GNU C Library is primarily designed to be a portable
and high performance C library.  It follows all relevant
standards including ISO C11 and POSIX.1-2017.  It is also
internationalized and has one of the most complete
internationalization interfaces known.

The GNU C Library webpage is at http://www.gnu.org/software/libc/

Packages for the 2.35 release may be downloaded from:
        http://ftpmirror.gnu.org/libc/
        http://ftp.gnu.org/gnu/libc/

The mirror list is at http://www.gnu.org/order/ftp.html

NEWS for version 2.35
=====================

Major new features:

* Unicode 14.0.0 Support: Character encoding, character type info, and
  transliteration tables are all updated to Unicode 14.0.0, using
  generator scripts contributed by Mike FABIAN (Red Hat).

* Bump r_version in the debugger interface to 2 and add a new field,
  r_next, support multiple namespaces.

* Support for the C.UTF-8 locale has been added to glibc.  The locale
  supports full code-point sorting for all valid Unicode code points.  A
  limitation in the framework for fnmatch, regexec, and regcomp requires
  a compromise to save space and only ASCII-based range expressions are
  supported for now (see bug 28255).  The full size of the locale is
  only ~400KiB, with 346KiB coming from LC_CTYPE information for
  Unicode.  This locale harmonizes downstream C.UTF-8 already shipping
  in various downstream distributions.  The locale is not built into
  glibc, and must be installed.

* <math.h> functions that round their results to a narrower type, and
  corresponding <tgmath.h> macros, are added from TS 18661-1:2014, TS
  18661-3:2015 and draft ISO C2X:

  - fsqrt, fsqrtl, dsqrtl and corresponding fMsqrtfN, fMsqrtfNx,
    fMxsqrtfN and fMxsqrtfNx functions.

  - ffma, ffmal, dfmal and corresponding fMfmafN, fMfmafNx, fMxfmafN and
    fMxfmafNx functions.

* <math.h> functions for floating-point maximum and minimum,
  corresponding to new operations in IEEE 754-2019, and corresponding
  <tgmath.h> macros, are added from draft ISO C2X: fmaximum,
  fmaximum_num, fmaximum_mag, fmaximum_mag_num, fminimum, fminimum_num,
  fminimum_mag, fminimum_mag_num and corresponding functions for float,
  long double, _FloatN and _FloatNx.

* <math.h> macros for single-precision float constants are added as a
  GNU extension: M_Ef, M_LOG2Ef, M_LOG10Ef, M_LN2f, M_LN10f, M_PIf,
  M_PI_2f, M_PI_4f, M_1_PIf, M_2_PIf, M_2_SQRTPIf, M_SQRT2f and
  M_SQRT1_2f.

* The __STDC_IEC_60559_BFP__ and __STDC_IEC_60559_COMPLEX__ macros are
  predefined as specified in TS 18661-1:2014.

* The exp10 functions in <math.h> now have a corresponding type-generic
  macro in <tgmath.h>.

* The ISO C2X macro _PRINTF_NAN_LEN_MAX has been added to <stdio.h>.

* printf-family functions now support the %b format for output of
  integers in binary, as specified in draft ISO C2X, and the %B variant
  of that format recommended by draft ISO C2X.

* A new DSO sorting algorithm has been added in the dynamic linker that uses
  topological sorting by depth-first search (DFS), solving performance issues
  of the existing sorting algorithm when encountering particular circular
  object dependency cases.

* A new tunable, glibc.rtld.dynamic_sort, can be used to select between
  the two DSO sorting algorithms.  The default setting of '2' uses the
  new DFS-based algorithm.  The setting '1' switches to the old
  algorithm used in glibc 2.33 and earlier.

* ABI support for a new function '__memcmpeq'. '__memcmpeq' is meant
  to be used by compilers for optimizing usage of 'memcmp' when its
  return value is only used for its boolean status.

* Support for automatically registering threads with the Linux rseq
  system call has been added.  This system call is implemented starting
  from Linux 4.18.  The Restartable Sequences ABI accelerates user-space
  operations on per-cpu data.  It allows user-space to perform updates
  on per-cpu data without requiring heavy-weight atomic operations.
  Automatically registering threads allows all libraries, including
  libc, to make immediate use of the rseq support by using the
  documented ABI, via the __rseq_flags, __rseq_offset, and __rseq_size
  variables.  The GNU C Library manual has details on integration of
  Restartable Sequences.

* A symbolic link to the dynamic linker is now installed under
  /usr/bin/ld.so (or more precisely, '${bindir}/ld.so').

* All programs and the testsuite in glibc are now built as position independent
  executables (PIE) by default on toolchains and architectures that support it.
  Further, if the toolchain and architecture supports it, even static programs
  are built as PIE and the resultant glibc can be used to build static PIE
  executables.  A new option --disable-default-pie has been added to disable
  this behavior and get a non-PIE build.  This option replaces
  --enable-static-pie, which no longer has any effect on the build
  configuration.

* On Linux, a new tunable, glibc.malloc.hugetlb, can be used to
  either make malloc issue madvise plus MADV_HUGEPAGE on mmap and sbrk
  or to use huge pages directly with mmap calls with the MAP_HUGETLB
  flags).  The former can improve performance when Transparent Huge Pages
  is set to 'madvise' mode while the latter uses the system reserved
  huge pages.

* The printf family of functions now handles the flagged %#m conversion
  specifier, printing errno as an error constant (similar to strerrorname_np).

* The function _dl_find_object has been added.  In-process unwinders
  can use it to efficiently locate unwinding information for a code
  address.

* Support for OpenRISC running on Linux has been added.  This port requires
  as least binutils 2.35, GCC 11, and Linux 5.4.  Currently only soft-float
  ABI is supported:

    - or1k-linux-gnu

  The OpenRISC ABI is 32-bit big-endian and uses 64-bit time (y2038 safe) and
  64-bit file offsets (LFS default).

* A new configure option, --with-rtld-early-cflags, can be used to
  specify additional compiler flags for building the early startup code
  of the dynamic linker.  On targets which have CPU compatibility
  checks, this can help to ensure that proper diagnostics are printed if
  the dynamic loader runs on an incompatible CPU.

* On Linux, the epoll_pwait2 function has been added.  It is similar to
  epoll_wait with the difference the timeout has nanoseconds resolution.

* The function posix_spawn_file_actions_addtcsetpgrp_np has been added,
  enabling posix_spawn and posix_spawnp to set the controlling terminal in
  the new process in a race free manner.  This function is a GNU extension.

* Source fortification (_FORTIFY_SOURCE) level 3 is now available for
  applications compiling with glibc and gcc 12 and later. Level 3 leverages
  the __builtin_dynamic_object_size function to deliver additional
  fortification balanced against additional runtime cost (checking non-constant
  bounds).

Deprecated and removed features, and other changes affecting compatibility:

* On x86-64, the LD_PREFER_MAP_32BIT_EXEC environment variable support
  has been removed since the first PT_LOAD segment is no longer executable
  due to defaulting to -z separate-code.

* The r_version update in the debugger interface makes the glibc binary
  incompatible with GDB binaries built without the following commits:

  c0154a4a21a gdb: Don't assume r_ldsomap when r_version > 1 on Linux
  4eb629d50d4 gdbserver: Check r_version < 1 for Linux debugger interface

  when audit modules or dlmopen are used.

* Intel MPX support (lazy PLT, ld.so profile, and LD_AUDIT) has been removed.

* The --enable-static-pie option is no longer available.  The glibc build
  configuration script now automatically detects static-pie support in the
  toolchain and architecture and enables it if available.

* The catchsegv script and associated libSegFault.so shared object have
  been removed.  There are widely-deployed out-of-process alternatives for
  catching coredumps and backtraces.

* Support for prelink will be removed in the next release; this includes
  removal of the LD_TRACE_PRELINKING, and LD_USE_LOAD_BIAS, environment
  variables and their functionality in the dynamic loader.

Changes to build and runtime requirements:

* The audit module interface version LAV_CURRENT is increased to enable
  proper bind-now support.  The loader now advertises via the la_symbind
  flags that PLT trace is not possible.  New audit modules require the
  new dynamic loader supporing the latest LAV_CURRENT version. Old audit
  modules are still loaded for all targets except aarch64.

* The audit interface on aarch64 is extended to support both the indirect
  result location register (x8) and NEON Q register.  Old audit modules are
  rejected by the loader.  Audit modules must be rebuilt to use the newer
  structure sizes and the latest module interface version for LAV_CURRENT.

Security related changes:

  CVE-2022-23219: Passing an overlong file name to the clnt_create
  legacy function could result in a stack-based buffer overflow when
  using the "unix" protocol.  Reported by Martin Sebor.

  CVE-2022-23218: Passing an overlong file name to the svcunix_create
  legacy function could result in a stack-based buffer overflow.

  CVE-2021-3998: Passing a path longer than PATH_MAX to the realpath
  function could result in a memory leak and potential access of
  uninitialized memory.  Reported by Qualys.

  CVE-2021-3999: Passing a buffer of size exactly 1 byte to the getcwd
  function may result in an off-by-one buffer underflow and overflow
  when the current working directory is longer than PATH_MAX and also
  corresponds to the / directory through an unprivileged mount
  namespace.  Reported by Qualys.

The following bugs are resolved with this release:

  [12889] nptl: Race condition in pthread_kill
  [14232] nptl: tst-cancel7 and tst-cancelx7 race condition
  [14913] libc: [mips] Clean up MIPS 64-bit register-dump.h output
  [15310] dynamic-link: _dl_sort_fini is O(n^3) causing slow exit when
    many dsos
  [15333] libc: Use 64-bit stat functions in installed programs
  [15533] dynamic-link: LD_AUDIT introduces an avoidable performance
    degradation
  [15971] dynamic-link: No interface for debugger access to libraries
    loaded with dlmopen
  [17318] locale: [RFE] Provide a C.UTF-8 locale by default
  [17645] dynamic-link: RFE: Improve performance of dynamic loader for
    deeply nested DSO dependencies.
  [19193] nptl: pthread_kill, pthread_cancel return ESRCH for a thread
    ID whose lifetime has not ended
  [22542] network: buffer overflow in sunrpc clnt_create
    (CVE-2022-23219)
  [22716] malloc: [PATCH] mtrace.pl: use TRACE_PRELINKING instead of
    TRACE_LOADED_OBJECTS
  [25947] malloc: memory leak in muntrace
  [26045] math: fmaxf(inf, nan) does not always work
  [26108] math: exp10() has problems with <tgmath.h>
  [26779] build: benign use after realloc at localealias.c:329
  [27609] dynamic-link: [2.32/2.33/2.34 Regression] In elf/dl-open.c
    (_dl_open) we might use __LM_ID_CALLER to index GL(dl_ns)[]
  [27945] build: build-many-glibcs.py doesn't configure GCC with
    --enable-initfini-array
  [27991] build: x86: sysdeps/x86/configure.ac breaks when
    libc_cv_include_x86_isa_level is loaded from cache
  [28036] nptl: Incorrect types for pthread_mutexattr_set/getrobust_np
    in __REDIRECT_NTH macro
  [28061] dynamic-link: A failing dlmopen called by an auditor crashed
  [28062] dynamic-link: Suppress audit calls when a (new) namespace is
    empty
  [28126] libc: nftw aborts for paths longer than PATH_MAX
  [28129] dynamic-link: Unnecessary check DT_DEBUG in ld.so
  [28153] libc: [test] gmon/tst-gmon-gprof* may have a f3 line when
    built with ld.lld
  [28182] libc: _TIME_BITS=64 in C++ has issues with fcntl, ioctl, prctl
  [28185] math: Inaccurate j0f function (again)
  [28199] locale: iconvconfig prefix flag behaves differently in glibc
    2.34
  [28203] dynamic-link: aarch64: elf_machine_{load_address,dynamic}
    should drop _GLOBAL_OFFSET_TABLE_[0] in favor of __ehdr_start for
    robustness
  [28213] librt: NULL pointer dereference in mq_notify (CVE-2021-38604)
  [28223] libc: mips: clone does not align stack
  [28253] dynamic-link: Missing colon in LD_SHOW_AUXV output after
    AT_MINSIGSTKSZ
  [28256] malloc: Conditional jump or move depends on uninitialised
    value(s) in __GI___tunables_init
  [28260] build: io/tst-closefrom, misc/tst-close_range, posix/tst-
    spawn5 fail if stray fds are open
  [28310] libc: Do not use affinity mask for sysconf
    (_SC_NPROCESSORS_CONF)
  [28338] time: undefined behavior in __tzfile_compute with oddball TZif
    file
  [28340] dynamic-link: ld.so crashes while loading a DSO with a read-
    only dynamic section
  [28349] libc: Segfault for ping -R on qemux86 caused by recvmsg()
  [28350] libc: ping receives SIGABRT on lib32-qemux86-64 caused by
    recvmsg()
  [28353] network: Race condition on __opensock
  [28357] dynamic-link: deadlock between pthread_create and ctors
  [28358] math: f64xdivf128 and f64xmulf128 spurious underflows
  [28361] nptl: Fix for bug 12889 causes setxid deadlock
  [28368] build: -Waddress instances in stdio-common/vfprintf-internal.c
  [28390] localedata: Update locale data to Unicode 14.0.0
  [28397] math: tgmath.h should not define fmaxmag, fminmag macros for
    C2X
  [28400] libc: [2.35 Regression] string/test-strncasecmp: cannot set
    locale "en_US.UTF-8"
  [28407] nptl: pthread_kill assumes that kill (getpid ()) is equivalent
    to tgkill (getpid (), gettid())
  [28455] dynamic-link: -Wl,--enable-new-dtags doesn't work
  [28457] dynamic-link: Missing reldepmod4.so dependency for
    globalmod1.so
  [28469] time: linux: struct timex is not correctly set for 32-bit
    systems with TIMESIZE=64
  [28470] regex: Buffer read overrun in regular expression searching
  [28475] string: Incorrect access attribute on memfrob
  [28524] libc: Conversion from ISO-2022-JP-3 with iconv may emit
    spurious NUL character on state reset
  [28532] libc: powerpc64[le]: CFI for assembly templated syscalls is
    incorrect
  [28550] dynamic-link: FAIL: tst-dso-
    ordering9_112-ecbda(GLIBC_TUNABLES=glibc.rtld.dynamic_sort=1)
    execution test
  [28554] build: Undefined generate-md5
  [28572] libc: Misaligned accesses in test-memcpy and test-mempcpy on
    hppa
  [28607] nptl: Masked signals are delivered on thread exit
  [28624] libc: openjdk 8/9 assume uni processor and gets stuck due to
    lack of cpu counting /proc fallback with glibc 2.34
  [28646] string: [2.35 Regression] mock -r fedora-36-x86_64
    /tmp/java-1.8.0-openjdk-1.8.0.312.b07-2.fc36.src.rpm& fails to build
  [28648] dynamic-link: Running ld.so on statically linked binaries
    crashes
  [28656] dynamic-link: LD_PREFER_MAP_32BIT_EXEC no longer works due to
    binutils changes
  [28676] dynamic-link: p_align on PT_LOAD segment in DSO isn't honored
  [28678] nptl: nptl/tst-create1 hangs sporadically
  [28688] dynamic-link: PT_LOAD p_align check is too strict
  [28700] nss: "dns [!UNAVAIL=return] files" default for hosts database
    is not useful
  [28707] time: assert in tzfile.c __tzfile_read striking with truncated
    timezones generated by tzcode-2021d and later
  [28713] math: GCC 12 miscompiles libm
  [28732] dynamic-link: FAIL: elf/tst-dl_find_object
  [28738] build: LIBC_LINKER_FEATURE doesn't work on linker -z option
  [28745] dynamic-link: _dl_find_object miscompilation on powerpc64le
  [28746] libc: _FORTIFY_SOURCE does not work for stpcpy
  [28749] libc: Inconsistency detected by ld.so: rtld.c: 1632: dl_main:
    Assertion `GL(dl_rtld_map).l_libname' failed!
  [28755] string: overflow bug in wcsncmp_avx2 and wcsncmp_evex
  [28757] nptl: GDB printer tests failed with new GDB
  [28765] math: x86_64 libmvec atan2 accuracy
  [28766] manual: Document libmvec accuracy
  [28768] network: Buffer overflow in svcunix_create with long pathnames
    (CVE-2022-23218)
  [28769] libc: Off-by-one buffer overflow/underflow in getcwd()
    (CVE-2021-3999)
  [28770] libc: Unexpected return value from realpath() for too long
    results (CVE-2021-3998)
  [28771] libc: %ebx optimization macros are incompatible with .altmacro
    in Systemtap probes
  [28780] build: --disable-default-pie doesn't work on static programs
  [28782] libc: x86-64 ISA level for glibc itself is always
    x86-64-baseline
  [28792] glob: possible wrong behaviour with patterns with double [
    with no closing ]
  [28837] libc: FAIL: socket/tst-socket-timestamp-compat
  [28847] locale: Empty mon_decimal_point in LC_MONETARY results in non-
    empty mon_decimal_point_wc

Release Notes
=============

https://sourceware.org/glibc/wiki/Release/2.35

Contributors
============

This release was made possible by the contributions of many people.
The maintainers are grateful to everyone who has contributed
changes or bug reports.  These include:

Adhemerval Zanella
Akila Welihinda
Alexandra Hájková
Andrea Monaco
Andreas Schwab
Anton Blanchard
Arjun Shankar
Aurelien Jarno
Ben Woodard
Carlos O'Donell
Chung-Lin Tang
Cristian Rodríguez
DJ Delorie
Fangrui Song
Florian Weimer
H.J. Lu
Hans-Peter Nilsson
Jangwoong Kim
Jiaxun Yang
John David Anglin
Jonathan Wakely
Joseph Myers
Khem Raj
Kurt Kanzenbach
Luca Boccassi
Mark Wielaard
Martin Sebor
Matheus Castanho
Matt Whitlock
Maxim Kuvyrkov
Michael Kerrisk
Mike FABIAN
Naohiro Tamura
Naohiro Tamura via Libc-alpha
Nart Tlisha
Nikita Popov
Noah Goldstein
Patrick McGehearty
Paul A. Clarke
Paul E. Murphy
Paul Eggert
Paul Zimmermann
Robbie Harwood
Romain GEISSLER
Rongwei Wang
Samuel Thibault
Sergey Bugaev
Siddhesh Poyarekar
Stafford Horne
Stefan Liebler
Sunil K Pandey
Szabolcs Nagy
Thomas Petazzoni
Tulio Magno Quites Machado Filho
Wilco Dijkstra
Xi Ruoyao
maminjie

Open master branch for glibc 2.35 development

The GNU C Library version 2.34 is now available

The GNU C Library
=================

The GNU C Library version 2.34 is now available.

The GNU C Library is used as *the* C library in the GNU system and
in GNU/Linux systems, as well as many other systems that use Linux
as the kernel.

The GNU C Library is primarily designed to be a portable
and high performance C library.  It follows all relevant
standards including ISO C11 and POSIX.1-2017.  It is also
internationalized and has one of the most complete
internationalization interfaces known.

The GNU C Library webpage is at http://www.gnu.org/software/libc/

Packages for the X.Y release may be downloaded from:
        http://ftpmirror.gnu.org/libc/
        http://ftp.gnu.org/gnu/libc/

The mirror list is at http://www.gnu.org/order/ftp.html

NEWS for version 2.34
=====================

Major new features:

* In order to support smoother in-place-upgrades and to simplify
  the implementation of the runtime all functionality formerly
  implemented in the libraries libpthread, libdl, libutil, libanl has
  been integrated into libc.  New applications do not need to link with
  -lpthread, -ldl, -lutil, -lanl anymore.  For backwards compatibility,
  empty static archives libpthread.a, libdl.a, libutil.a, libanl.a are
  provided, so that the linker options keep working.  Applications which
  have been linked against glibc 2.33 or earlier continue to load the
  corresponding shared objects (which are now empty).  The integration
  of those libraries into libc means that additional symbols become
  available by default.  This can cause applications that contain weak
  references to take unexpected code paths that would only have been
  used in previous glibc versions when e.g. preloading libpthread.so.0,
  potentially exposing application bugs.

* When _DYNAMIC_STACK_SIZE_SOURCE or _GNU_SOURCE are defined,
  PTHREAD_STACK_MIN is no longer constant and is redefined to
  sysconf(_SC_THREAD_STACK_MIN).  This supports dynamic sized register
  sets for modern architectural features like Arm SVE.

* Add _SC_MINSIGSTKSZ and _SC_SIGSTKSZ.  When _DYNAMIC_STACK_SIZE_SOURCE
  or _GNU_SOURCE are defined, MINSIGSTKSZ and SIGSTKSZ are no longer
  constant on Linux.  MINSIGSTKSZ is redefined to sysconf(_SC_MINSIGSTKSZ)
  and SIGSTKSZ is redefined to sysconf (_SC_SIGSTKSZ).  This supports
  dynamic sized register sets for modern architectural features like
  Arm SVE.

* The dynamic linker implements the --list-diagnostics option, printing
  a dump of information related to IFUNC resolver operation and
  glibc-hwcaps subdirectory selection.

* On Linux, the function execveat has been added.  It operates similar to
  execve and it is is already used to implement fexecve without requiring
  /proc to be mounted.  However, different than fexecve, if the syscall is not
  supported by the kernel an error is returned instead of trying a fallback.

* The ISO C2X function timespec_getres has been added.

* The feature test macro __STDC_WANT_IEC_60559_EXT__, from draft ISO
  C2X, is supported to enable declarations of functions defined in Annex F
  of C2X.  Those declarations are also enabled when
  __STDC_WANT_IEC_60559_BFP_EXT__, as specified in TS 18661-1, is
  defined, and when _GNU_SOURCE is defined.

* On powerpc64*, glibc can now be compiled without scv support using the
  --disable-scv configure option.

* Add support for 64-bit time_t on configurations like x86 where time_t
  is traditionally 32-bit.  Although time_t still defaults to 32-bit on
  these configurations, this default may change in future versions.
  This is enabled with the _TIME_BITS preprocessor macro set to 64 and is
  only supported when LFS (_FILE_OFFSET_BITS=64) is also enabled.  It is
  only enabled for Linux and the full support requires a minimum kernel
  version of 5.1.

* The main gconv-modules file in glibc now contains only a small set of
  essential converter modules and the rest have been moved into a supplementary
  configuration file gconv-modules-extra.conf in the gconv-modules.d directory
  in the same GCONV_PATH.  Similarly, external converter modules directories
  may have supplementary configuration files in a gconv-modules.d directory
  with names ending with .conf to logically classify the converter modules in
  that directory.

* On Linux, a new tunable, glibc.pthread.stack_cache_size, can be used
  to configure the size of the thread stack cache.

* The function _Fork has been added as an async-signal-safe fork replacement
  since Austin Group issue 62 droped the async-signal-safe requirement for
  fork (and it will be included in the future POSIX standard).  The new _Fork
  function does not run any atfork function neither resets any internal state
  or lock (such as the malloc one), and only sets up a minimal state required
  to call async-signal-safe functions (such as raise or execve).  This function
  is currently a GNU extension.

* On Linux, the close_range function has been added.  It allows efficiently
  closing a range of file descriptors on recent kernels (version 5.9).

* The function closefrom has been added.  It closes all file descriptors
  greater than or equal to a given integer.  This function is a GNU extension,
  although it is also present in other systems.

* The posix_spawn_file_actions_addclosefrom_np function has been added,
  enabling posix_spawn and posix_spawnp to close all file descriptors greater
  than or equal to a given integer.  This function is a GNU extension,
  although Solaris also provides a similar function.

Deprecated and removed features, and other changes affecting compatibility:

* The function pthread_mutex_consistent_np has been deprecated; programs
  should use the equivalent standard function pthread_mutex_consistent
  instead.

* The function pthread_mutexattr_getrobust_np has been deprecated;
  programs should use the equivalent standard function
  pthread_mutexattr_getrobust instead.

* The function pthread_mutexattr_setrobust_np has been deprecated;
  programs should use the equivalent standard function
  pthread_mutexattr_setrobust instead.

* The function pthread_yield has been deprecated; programs should use
  the equivalent standard function sched_yield instead.

* The function inet_neta declared in <arpa/inet.h> has been deprecated.

* Various rarely-used functions declared in <resolv.h> and
  <arpa/nameser.h> have been deprecated.  Applications are encouraged to
  use dedicated DNS processing libraries if applicable.  For <resolv.h>,
  this affects the functions dn_count_labels, fp_nquery, fp_query,
  fp_resstat, hostalias, loc_aton, loc_ntoa, p_cdname, p_cdnname,
  p_class, p_fqname, p_fqnname, p_option, p_query, p_rcode, p_time,
  p_type, putlong, putshort, res_hostalias, res_isourserver,
  res_nameinquery, res_queriesmatch, res_randomid, sym_ntop, sym_ntos,
  sym_ston.  For <arpa/nameser.h>, the functions ns_datetosecs,
  ns_format_ttl, ns_makecanon, ns_parse_ttl, ns_samedomain, ns_samename,
  ns_sprintrr, ns_sprintrrf, ns_subdomain have been deprecated.

* Various symbols previously defined in libresolv have been moved to libc
  in order to prepare for libresolv moving entirely into libc (see earlier
  entry for merging libraries into libc).  The symbols __dn_comp,
  __dn_expand, __dn_skipname, __res_dnok, __res_hnok, __res_mailok,
  __res_mkquery, __res_nmkquery, __res_nquery, __res_nquerydomain,
  __res_nsearch, __res_nsend, __res_ownok, __res_query, __res_querydomain,
  __res_search, __res_send formerly in libresolv have been renamed and no
  longer have a __ prefix.  They are now available in libc.

* The pthread cancellation handler is now installed with SA_RESTART and
  pthread_cancel will always send the internal SIGCANCEL on a cancellation
  request.  It should not be visible to applications since the cancellation
  handler should either act upon cancellation (if asynchronous cancellation
  is enabled) or ignore the cancellation internal signal.  However there are
  buggy kernel interfaces (for instance some CIFS versions) that could still
  see a spurious EINTR error when cancellation interrupts a blocking syscall.

* Previously, glibc installed its various shared objects under versioned
  file names such as libc-2.33.so.  The ABI sonames (e.g., libc.so.6)
  were provided as symbolic links.  Starting with glibc 2.34, the shared
  objects are installed under their ABI sonames directly, without
  symbolic links.  This increases compatibility with distribution
  package managers that delete removed files late during the package
  upgrade or downgrade process.

* The symbols mallwatch and tr_break are now deprecated and no longer used in
  mtrace.  Similar functionality can be achieved by using conditional
  breakpoints within mtrace functions from within gdb.

* The __morecore and __after_morecore_hook malloc hooks and the default
  implementation __default_morecore have been removed from the API.  Existing
  applications will continue to link against these symbols but the interfaces
  no longer have any effect on malloc.

* Debugging features in malloc such as the MALLOC_CHECK_ environment variable
  (or the glibc.malloc.check tunable), mtrace() and mcheck() have now been
  disabled by default in the main C library.  Users looking to use these
  features now need to preload a new debugging DSO libc_malloc_debug.so to get
  this functionality back.

* The deprecated functions malloc_get_state and malloc_set_state have been
  moved from the core C library into libc_malloc_debug.so.  Legacy applications
  that still use these functions will now need to preload libc_malloc_debug.so
  in their environment using the LD_PRELOAD environment variable.

* The deprecated memory allocation hooks __malloc_hook, __realloc_hook,
  __memalign_hook and __free_hook are now removed from the API.  Compatibility
  symbols are present to support legacy programs but new applications can no
  longer link to these symbols.  These hooks no longer have any effect on glibc
  functionality.  The malloc debugging DSO libc_malloc_debug.so currently
  supports hooks and can be preloaded to get this functionality back for older
  programs.  However this is a transitional measure and may be removed in a
  future release of the GNU C Library.  Users may port away from these hooks by
  writing and preloading their own malloc interposition library.

Changes to build and runtime requirements:

* On Linux, the shm_open, sem_open, and related functions now expect the
  file shared memory file system to be mounted at /dev/shm.  These functions
  no longer search among the system's mount points for a suitable
  replacement if /dev/shm is not available.

Security related changes:

  CVE-2021-27645: The nameserver caching daemon (nscd), when processing
  a request for netgroup lookup, may crash due to a double-free,
  potentially resulting in degraded service or Denial of Service on the
  local system.  Reported by Chris Schanzle.

  CVE-2021-33574: The mq_notify function has a potential use-after-free
  issue when using a notification type of SIGEV_THREAD and a thread
  attribute with a non-default affinity mask.

  CVE-2021-35942: The wordexp function may overflow the positional
  parameter number when processing the expansion resulting in a crash.
  Reported by Philippe Antoine.

The following bugs are resolved with this release:

  [4737] libc: fork is not async-signal-safe
  [5781] math: Slow dbl-64 sin/cos/sincos for special values
  [10353] libc: Methods for deleting all file descriptors greater than
    given integer (closefrom)
  [14185] glob: fnmatch() fails when '*' wildcard is applied on the file
    name containing multi-byte character(s)
  [14469] math: Inaccurate j0f function
  [14470] math: Inaccurate j1f function
  [14471] math: Inaccurate y0f function
  [14472] math: Inaccurate y1f function
  [14744] nptl: kill -32 $pid or kill -33 $pid on a process cancels a
    random thread
  [15271] dynamic-link: dlmopen()ed shared library with LM_ID_NEWLM
    crashes if it fails dlsym() twice
  [15648] nptl: multiple definition of `__lll_lock_wait_private'
  [16063] nptl: Provide a pthread_once variant in libc directly
  [17144] libc: syslog is not thread-safe if NO_SIGPIPE is not defined
  [17145] libc: syslog with LOG_CONS leaks console file descriptor
  [17183] manual: description of ENTRY struct in <search.h> in glibc
    manual is incorrect
  [18435] nptl: pthread_once hangs when init routine throws an exception
  [18524] nptl: Missing calloc error checking in
    __cxa_thread_atexit_impl
  [19329] dynamic-link: dl-tls.c assert failure at concurrent
    pthread_create and dlopen
  [19366] nptl: returning from a thread should disable cancellation
  [19511] nptl: 8MB memory leak in pthread_create in case of failure
    when non-root user changes priority
  [20802] dynamic-link: getauxval NULL pointer dereference after static
    dlopen
  [20813] nptl: pthread_exit is inconsistent between libc and libpthread
  [22057] malloc: malloc_usable_size is broken with mcheck
  [22668] locale: LC_COLLATE: the last character of ellipsis is not
    ordered correctly
  [23323] libc: [RFE] CSU startup hardening.
  [23328] malloc: Remove malloc hooks and ensure related APIs return no
    data.
  [23462] dynamic-link: Static binary with dynamic string tokens ($LIB,
    $PLATFORM, $ORIGIN) crashes
  [23489] libc: "gcc -lmcheck" aborts on free when using posix_memalign
  [23554] nptl: pthread_getattr_np reports wrong stack size with
    MULTI_PAGE_ALIASING
  [24106] libc: Bash interpreter in ldd script is taken from host
  [24773] dynamic-link: dlerror in an secondary namespace does not use
    the right free implementation
  [25036] localedata: Update collation order for Swedish
  [25383] libc: where_is_shmfs/__shm_directory/SHM_GET_NAME may cause
    shm_open to pick wrong directory
  [25680] dynamic-link: ifuncmain9picstatic and ifuncmain9picstatic
    crash in IFUNC resolver due to stack canary (--enable-stack-
    protector=all)
  [26874] build: -Warray-bounds in _IO_wdefault_doallocate
  [26983] math: [x86_64] x86_64 tgamma has too large ULP error
  [27111] dynamic-link: pthread_create and tls access use link_map
    objects that may be concurrently freed by dlclose
  [27132] malloc: memusagestat is linked to system librt, leading to
    undefined symbols on major version upgrade
  [27136] dynamic-link: dtv setup at thread creation may leave an entry
    uninitialized
  [27249] libc: libSegFault.so does not output signal number properly
  [27304] nptl: pthread_cond_destroy does not pass private flag to futex
    system calls
  [27318] dynamic-link: glibc fails to load binaries when built with
    -march=sandybridge:  CPU ISA level is lower than required
  [27343] nss: initgroups() SIGSEGVs when called on a system without
    nsswich.conf (in a chroot)
  [27346] dynamic-link: x86: PTWRITE feature check is missing
  [27389] network: NSS chroot hardening causes regressions in chroot
    deployments
  [27403] dynamic-link: aarch64: tlsdesc htab is not freed on dlclose
  [27444] libc: sysconf reports unsupported option (-1) for
    _SC_LEVEL1_ICACHE_LINESIZE on X86 since v2.33
  [27462] nscd: double-free in nscd (CVE-2021-27645)
  [27468] malloc: aarch64: realloc crash with heap tagging: FAIL:
    malloc/tst-malloc-thread-fail
  [27498] dynamic-link: __dl_iterate_phdr lacks unwinding information
  [27511] libc: S390 memmove assumes Vector Facility when MIE Facility 3
    is present
  [27522] glob: glob, glob64 incorrectly marked as __THROW
  [27555] dynamic-link: Static tests fail with --enable-stack-
    protector=all
  [27559] libc: fstat(AT_FDCWD) succeeds (it shouldn't) and returns
    information for the current directory
  [27577] dynamic-link: elf/ld.so --help doesn't work
  [27605] libc: tunables can't control xsave/xsavec selection in
    dl_runtime_resolve_*
  [27623] libc: powerpc: Missing registers in sc[v] clobbers list
  [27645] libc: [linux] sysconf(_SC_NPROCESSOR...) breaks down on
    containers
  [27646] dynamic-link: Linker error for non-existing NSS symbols (e.g.
    _nss_files_getcanonname_r) from within a dlmopen namespace.
  [27648] libc: FAIL: misc/tst-select
  [27650] stdio: vfscanf returns too early if a match is longer than
    INT_MAX
  [27651] libc: Performance regression after updating to 2.33
  [27655] string: Wrong size calculation in string/test-strnlen.c
  [27706] libc: select fails to update timeout on error
  [27709] libc: arm: FAIL: debug/tst-longjmp_chk2
  [27721] dynamic-link: x86: ld_audit ignores bind now for TLSDESC and
    tries resolving them lazily
  [27744] nptl: Support different libpthread/ld.so load orders in
    libthread_db
  [27749] libc: Data race __run_exit_handlers
  [27761] libc: getconf: Segmentation fault when passing '-vq' as
    argument
  [27832] nss: makedb.c:797:7: error: 'writev' specified size 4294967295
    exceeds maximum object size 2147483647
  [27870] malloc: MALLOC_CHECK_ causes realloc(valid_ptr, TOO_LARGE) to
    not set ENOMEM
  [27872] build: Obsolete configure option --enable-stackguard-
    randomization
  [27873] build: tst-cpu-features-cpuinfo fail when building on AMD cpu
  [27882] localedata: Use U+00AF MACRON in more EBCDIC charsets
  [27892] libc: powerpc: scv ABI error handling fails to check
    IS_ERR_VALUE
  [27896] nptl: mq_notify does not handle separately allocated thread
    attributes (CVE-2021-33574)
  [27901] libc: TEST_STACK_ALIGN doesn't work
  [27902] libc: The x86-64 clone wrapper fails to align child stack
  [27914] nptl: Install SIGSETXID handler with SA_ONSTACK
  [27939] libc: aarch64: clone does not align the stack
  [27968] libc: s390x: clone does not align the stack
  [28011] libc: Wild read in wordexp (parse_param) (CVE-2021-35942)
  [28024] string: s390(31bit): Wrong result of memchr (MEMCHR_Z900_G5)
    with n >= 0x80000000
  [28028] malloc: malloc: tcache shutdown sequence does not work if the
    thread never allocated anything
  [28033] libc: Need to check RTM_ALWAYS_ABORT for RTM
  [28064] string: x86_64:wcslen implementation list has wcsnlen
  [28067] libc: FAIL: posix/tst-spawn5
  [28068] malloc: FAIL: malloc/tst-mallocalign1-mcheck
  [28071] time: clock_gettime, gettimeofday, time lost vDSO acceleration
    on older kernels
  [28075] nis: Out-of-bounds static buffer read in nis_local_domain
  [28089] build: tst-tls20 fails when linker defaults to --as-needed
  [28090] build: elf/tst-cpu-features-cpuinfo-static fails on certain
    AMD64 cpus
  [28091] network: ns_name_skip may return 0 for domain names without
    terminator

Release Notes
=============

https://sourceware.org/glibc/wiki/Release/2.34

Contributors
============

This release was made possible by the contributions of many people.
The maintainers are grateful to everyone who has contributed
changes or bug reports.  These include:

Adhemerval Zanella
Alejandro Colomar \(man-pages\)
Alexandra Hájková
Alice Xu
Alyssa Ross
Andreas Roeseler
Andreas Schwab
Anton Blanchard
Arjun Shankar
Armin Brauns
Bruno Haible
Carlos O'Donell
Cooper Qu
DJ Delorie
Dan Raymond
Darius Rad
David Hughes
Fangrui Song
Florian Weimer
H.J. Lu
Hanataka Shinya
Hugo Gabriel Eyherabide
Jakub Jelinek
JeffyChen
John David Anglin
Joseph Myers
Khem Raj
Lirong Yuan
Lucas A. M. Magalhaes
Lukasz Majewski
Maninder Singh
Mark Harris
Martin Sebor
Matheus Castanho
Michal Nazarewicz
Mike Hommey
Naohiro Tamura
Nicholas Piggin
Noah Goldstein
Paul Eggert
Paul Zimmermann
Pedro Franco de Carvalho
Raoni Fassina Firmino
Raphael Moreira Zinsly
Romain GEISSLER
Sajan Karumanchi
Samuel Thibault
Sebastian Rasmussen
Sergei Trofimovich
Shen-Ta Hsieh
Siddhesh Poyarekar
Stafford Horne
Stefan Liebler
Sunil K Pandey
Szabolcs Nagy
Tulio Magno Quites Machado Filho
Vineet Gupta
Vitaly Buka
Vitaly Chikunov
Wilco Dijkstra
Xeonacid
Xiaoming Ni
Yang Xu
liuhongt
noah
Érico Nogueira

Open master branch for glibc 2.34 development

The GNU C Library
=================

The GNU C Library version 2.33 is now available.

The GNU C Library is used as *the* C library in the GNU system and
in GNU/Linux systems, as well as many other systems that use Linux
as the kernel.

The GNU C Library is primarily designed to be a portable
and high performance C library.  It follows all relevant
standards including ISO C11 and POSIX.1-2017.  It is also
internationalized and has one of the most complete
internationalization interfaces known.

The GNU C Library webpage is at http://www.gnu.org/software/libc/

Packages for the 2.32 release may be downloaded from:
        http://ftpmirror.gnu.org/libc/
        http://ftp.gnu.org/gnu/libc/

The mirror list is at http://www.gnu.org/order/ftp.html

NEWS for version 2.33
=====================

Major new features:

* The dynamic linker accepts the --list-tunables argument which prints
  all the supported tunables.  This option is disable if glibc is
  configured with tunables disabled (--enable-tunables=no).

* The dynamic linker accepts the --argv0 argument and provides opportunity
  to change argv[0] string.

* The dynamic linker loads optimized implementations of shared objects
  from subdirectories under the glibc-hwcaps directory on the library
  search path if the system's capabilities meet the requirements for
  that subdirectory.  Initially supported subdirectories include
  "power9" and "power10" for the powerpc64le-linux-gnu architecture,
  "z13", "z14", "z15" for s390x-linux-gnu, and "x86-64-v2", "x86-64-v3",
  "x86-64-v4" for x86_64-linux-gnu.  In the x86_64-linux-gnu case, the
  subdirectory names correspond to the vendor-independent x86-64
  microarchitecture levels defined in the x86-64 psABI supplement.

* The new --help option of the dynamic linker provides usage and
  information and library search path diagnostics.

* The mallinfo2 function is added to report statistics as per mallinfo,
  but with larger field widths to accurately report values that are
  larger than fit in an integer.

* Add <sys/platform/x86.h> to provide query macros for x86 CPU features.

* Support for the RISC-V ISA running on Linux has been expanded to run on
  32-bit hardware.  This is supported for the following ISA and ABI pairs:

    - rv32imac ilp32
    - rv32imafdc ilp32
    - rv32imafdc ilp32d

  The 32-bit RISC-V port requires at least Linux 5.4, GCC 7.1 and binutils
  2.28.

* A new fortification level _FORTIFY_SOURCE=3 is available.  At this level,
  glibc may use additional checks that may have an additional performance
  overhead.  At present these checks are available only on LLVM 9 and later.
  The latest GCC available at this time (10.2) does not support this level of
  fortification.

Deprecated and removed features, and other changes affecting compatibility:

* The mallinfo function is marked deprecated.  Callers should call
  mallinfo2 instead.

* When dlopen is used in statically linked programs, alternative library
  implementations from HWCAP subdirectories are no longer loaded.
  Instead, the default implementation is used.

* The deprecated <sys/vtimes.h> header and the function vtimes have been
  removed.  To support old binaries, the vtimes function continues to exist
  as a compatibility symbol.  Applications should use the getrlimit or
  prlimit.

* Following a change in the tzdata 2018a release upstream, the zdump
  program is now installed in the /usr/bin subdirectory.  Previously,
  the /usr/sbin subdirectory was used.

* On s390(x), the type float_t is now derived from the macro
  __FLT_EVAL_METHOD__ that is defined by the compiler, instead of being
  hardcoded to double.  This does not affect the ABI of any libraries
  that are part of the GNU C Library, but may affect the ABI of other
  libraries that use this type in their interfaces.  The new definition
  improves consistency with compiler behavior in many scenarios.

* A future version of glibc will stop loading shared objects from the
  "tls" subdirectories on the library search path, the subdirectory that
  corresponds to the AT_PLATFORM system name, and also stop employing
  the legacy AT_HWCAP search mechanism.  Applications should switch to
  the new glibc-hwcaps mechanism instead; if they do not do that, only
  the baseline version (directly from the search path directory) will be
  loaded.

Changes to build and runtime requirements:

* On Linux, the system administrator needs to configure /dev/pts with
  the intended access modes for pseudo-terminals.  glibc no longer
  attemps to adjust permissions of terminal devices.  The previous glibc
  defaults ("tty" group, user read/write and group write) already
  corresponded to what most systems used, so that grantpt did not
  perform any adjustments.

* On Linux, the posix_openpt and getpt functions no longer attempt to
  use legacy (BSD) pseudo-terminals and assume that if /dev/ptmx exists
  (and pseudo-terminals are supported), a devpts file system is mounted
  on /dev/pts.  Current systems already meet these requirements.

* s390x requires GCC 7.1 or newer.  See gcc Bug 98269.

Security related changes:

  CVE-2021-3326: An assertion failure during conversion from the
  ISO-20220-JP-3 character set using the iconv function has been fixed.
  This assertion was triggered by certain valid inputs in which the
  converted output contains a combined sequence of two wide characters
  crossing a buffer boundary.  Reported by Tavis Ormandy.

  CVE-2020-27618: An infinite loop has been fixed in the iconv program when
  invoked with input containing redundant shift sequences in the IBM1364,
  IBM1371, IBM1388, IBM1390, or IBM1399 character sets.

  CVE-2020-29562: An assertion failure has been fixed in the iconv function
  when invoked with UCS4 input containing an invalid character.

  CVE-2019-25013: A buffer overflow has been fixed in the iconv function when
  invoked with EUC-KR input containing invalid multibyte input sequences.

The following bugs are resolved with this release:

  [10635] libc: realpath portability patches
  [16124] dynamic-link: ld.so should allow to change argv[0]
  [17924] malloc: 'free' should not set errno
  [18683] libc: Linux faccessat implementation can incorrectly ignore
    AT_EACCESS
  [22899] libc: Use 64-bit readdir() in generic POSIX getcwd()
  [23249] libc: Epyc and other current AMD CPUs do not select the
    "haswell" platform subdirectory
  [24080] dynamic-link: Definition of "haswell" platform is inconsistent
    with GCC
  [24202] libc: m68k setjmp() saves incorrect 'a5' register in --enable-
    stack-protector=all
  [24941] libc: Make grantpt usable after multi-threaded fork in more
    cases
  [24970] libc: realpath mishandles EOVERFLOW; stat not needed anyway
  [24973] locale: iconv encounters segmentation fault when converting
    0x00 0xfe in EUC-KR to UTF-8 (CVE-2019-25013)
  [25399] string: undefined reference to `__warn_memset_zero_len' when
    changing gnuc version
  [25859] libc: glibc parser for /sys/devices/system/cpu/online is
    incorrect
  [25938] dynamic-link: ld.so.cache should store meaning of hwcap mask
    bits
  [25971] libc: s390 bits/hwcap.h out of sync with kernel
  [26053] libc: unlockpt fails with ENOTTY for non-ptmx descriptors
  [26100] libc: Race in syslog(3) with regards to tag printing.
  [26124] libc: Export <cpu-features.h>
  [26130] nscd: Inconsistent nscd cache during pruning
  [26203] libc: GLRO(dl_x86_cpu_features) may not be intialized
  [26224] locale: iconv hangs when converting some invalid inputs from
    several IBM character sets (CVE-2020-27618)
  [26341] libc: realpath cyclically call __alloca(path_max) to consume
    too much stack space
  [26343] manual: invalid documented return type for strerrorname_np(),
    strerrordesc_np(), sigdescr_np(), sigabbrev_np()
  [26376] libc: Namespace violation in stdio.h and sys/stat.h if build
    with optimization.
  [26383] locale: bind_textdomain_codeset doesn't accept //TRANSLIT
    anymore
  [26394] time: [2.33 Regression] FAIL: nptl/tst-join14
  [26534] math: libm.so 2.32 SIGILL in pow() due to FMA4 instruction on
    non-FMA4 system
  [26552] dynamic-link: CPU_FEATURE_USABLE_P should be more conservative
  [26553] libc: mtx_init allows type set to "mtx_recursive" only
  [26555] string: strerrorname_np does not return the documented value
  [26592] libc: pointer arithmetic overflows in realpath
  [26600] network: Transaction ID collisions cause slow DNS lookups in
    getaddrinfo
  [26606] libc: [2.33 Regression] pselect is broken on x32
  [26615] libc: powerpc: libc segfaults when LD_PRELOADed with libgcc
  [26620] glob: fnmatch with collating symbols results in segmentation
    fault
  [26625] libc: [2.33 Regression] CET is disabled
  [26636] libc: 32-bit shmctl(IPC_INFO) crashes when shminfo struct is
    at the end of a memory mapping
  [26637] libc: semctl SEM_STAT_ANY fails to pass the buffer specified
    by the caller to the kernel
  [26639] libc: msgctl IPC_INFO and MSG_INFO return garbage
  [26647] build: [-Werror=array-parameter=] due to different
    declarations for __sigsetjmp
  [26648] libc: mkstemp is likely to fail on systems with non-stricly-
    monotonic clocks
  [26649] stdio: printf should handle non-normal x86 long double numbers
    gracefully (CVE-2020-29573)
  [26686] build: -Warray-parameter instances building with GCC 11
  [26687] build: -Warray-bounds instances building with GCC 11
  [26690] stdio: Aliasing violation in __vfscanf_internal
  [26691] nptl: Use a minimum guard size of 64 KiB on aarch64
  [26726] build: GCC warning calling new_composite_name with an array of
    one element
  [26736] libc: FAIL: misc/tst-sysvshm-linux
  [26737] libc: Random FAIL: rt/tst-shm
  [26791] libc: Missing O_CLOEXEC in sysconf.c
  [26798] dynamic-link: aarch64: variant PCS symbols may be incorrectly
    lazy bound
  [26801] nptl: pthread_mutex_clocklock with CLOCK_MONOTONIC can fail on
    PI mutexes
  [26818] string: aarch64: string tests may run ifunc variants that are
    not safe
  [26821] libc: Memory leak test failures on Fedora 33
  [26824] libc: FAIL: elf/tst-cpu-features-supports with recent trunk:
    FSGSBASE/LM/RDRAND check failure
  [26833] time: adjtime() with delta == NULL segfaults on armv7 32bit
    platform
  [26853] libc: aarch64: Missing unwind information in statically linked
    startup code
  [26923] locale: Assertion failure in iconv when converting invalid
    UCS4 (CVE-2020-29562)
  [26926] dynamic-link: aarch64: library dependencies are not bti
    protected
  [26932] libc: sh: Multiple floating point functions defined as stubs
    only since 2.31
  [26964] nptl: pthread_mutex_timedlock returning EAGAIN after futex is
    locked
  [26988] dynamic-link: aarch64: BTI mprotect address is not page
    aligned
  [27002] build: libc_freeres_fn build failure with GCC 11
  [27004] dynamic-link: ld.so is miscompiled by GCC 11
  [27008] dynamic-link: ld.so.cache should have endianness markup
  [27042] libc: [alpha] anonymous union in struct stat confuses
    detection logic
  [27053] libc: Conformance regression in system(3) (and probably also
    pclose(3))
  [27072] dynamic-link: static pie ifunc resolvers run before hwcap is
    setup
  [27077] network: Do not reload /etc/nsswitch.conf from chroot
  [27083] libc: Unsafe unbounded alloca in addmntent
  [27104] dynamic-link: The COMMON_CPUID_INDEX_MAX handshake does not
    work
  [27130] string: "rep movsb" performance issue
  [27150] libc: alpha: wait4() is unavailable in static linking
  [27177] dynamic-link:
    GLIBC_TUNABLES=glibc.cpu.x86_ibt=on:glibc.cpu.x86_shstk=on doesn't
    work
  [27222] dynamic-link: Incorrect sysdeps/x86/tst-cpu-features-cpuinfo.c
  [27237] malloc: deadlock in malloc/tst-malloc-stats-cancellation
  [27256] locale: Assertion failure in ISO-2022-JP-3 gconv module
    related to combining characters (CVE-2021-3326)

Release Notes
=============

https://sourceware.org/glibc/wiki/Release/2.33

Contributors
============

This release was made possible by the contributions of many people.
The maintainers are grateful to everyone who has contributed
changes or bug reports.  These include:

Adhemerval Zanella
Alexandra Hájková
Alistair Francis
Andreas Schwab
Anssi Hannula
Arjun Shankar
Benno Schulenberg
Carlos O'Donell
Chen Li
Cooper Qu
Corinna Vinschen
DJ Delorie
Dmitry V. Levin
Fangrui Song
Florian Weimer
Guillaume Gardet
H.J. Lu
Jakub Jelinek
Jangwoong Kim
Jeremie Koenig
Jim Wilson
John David Anglin
John McCabe
Jonathan Wakely
Jonny Grant
Joseph Myers
Lode Willems
Lucas A. M. Magalhaes
Lukasz Majewski
Maciej W. Rozycki
Mao Han
Marc Aurèle La France
Marius Hillenbrand
Mark Wielaard
Martin Liska
Martin Sebor
Matheus Castanho
Matt Turner
Maximilian Krüger
Michael Colavita
Ondřej Hošek
Patrick McGehearty
Patsy Griffin
Paul E. Murphy
Paul Eggert
Paul Zimmermann
Prasanth R
Raoni Fassina Firmino
Raphael M Zinsly
Raphael Moreira Zinsly
Richard Braun
Richard Earnshaw
Rolf Eike Beer
Sajan Karumanchi
Samuel Thibault
Sergei Trofimovich
Shuo Wang
Siddhesh Poyarekar
Stafford Horne
Stefan Liebler
Szabolcs Nagy
Thorsten Kukuk
Tulio Magno Quites Machado Filho
Vincent Chen
Vincent Mihalkovic
Vineet Gupta
W. Hashimoto
Wilco Dijkstra
Xiaoming Ni
Zong Li
liqingqing
Érico Rolim

Open master branch for glibc 2.33 development.

The GNU C Library
=================

The GNU C Library version 2.32 is now available.

The GNU C Library is used as *the* C library in the GNU system and
in GNU/Linux systems, as well as many other systems that use Linux
as the kernel.

The GNU C Library is primarily designed to be a portable
and high performance C library.  It follows all relevant
standards including ISO C11 and POSIX.1-2017.  It is also
internationalized and has one of the most complete
internationalization interfaces known.

The GNU C Library webpage is at http://www.gnu.org/software/libc/

Packages for the 2.32 release may be downloaded from:
        http://ftpmirror.gnu.org/libc/
        http://ftp.gnu.org/gnu/libc/

The mirror list is at http://www.gnu.org/order/ftp.html

NEWS for version 2.32
=====================

Major new features:

* Unicode 13.0.0 Support: Character encoding, character type info, and
  transliteration tables are all updated to Unicode 13.0.0, using
  generator scripts contributed by Mike FABIAN (Red Hat).

* New locale added: ckb_IQ (Kurdish/Sorani spoken in Iraq)

* Support for Synopsys ARC HS cores (ARCv2 ISA) running Linux has been
  added. This port requires at least binutils-2.32, gcc-8.3 and Linux-5.1.
  Three ABIs are supported:

     - arc-linux-gnu
     - arc-linux-gnuhf
     - arceb-linux-gnu

  The arc* ABI is little-endian while arceb is big-endian. All ABIs use
  64-bit time (y2038 safe) and 64-bit file offsets (LFS default).

* The GNU C Library now loads audit modules listed in the DT_AUDIT and
  DT_DEPAUDIT dynamic section entries of the main executable.

* powerpc64le supports IEEE128 long double libm/libc redirects when
  using the -mabi=ieeelongdouble to compile C code on supported GCC
  toolchains.  It is recommended to use GCC 8 or newer when testing
  this option.

* To help detect buffer overflows and other out-of-bounds accesses
  several APIs have been annotated with GCC 'access' attribute.  This
  should help GCC 10 issue better warnings.

* On Linux, functions the pthread_attr_setsigmask_np and
  pthread_attr_getsigmask_np have been added.  They allow applications
  to specify the signal mask of a thread created with pthread_create.

* The GNU C Library now provides the header file <sys/single_threaded.h>
  which declares the variable __libc_single_threaded.  Applications are
  encouraged to use this variable for single-thread optimizations,
  instead of weak references to symbols historically defined in
  libpthread.

* The functions sigabbrev_np and sigdescr_np have been added.  The
  sigabbrev_np returns the abbreviated signal name (e.g. "HUP" for SIGHUP)
  while sigdescr_np returns a string describing the signal number (e.g
  "Hangup" for SIGHUP).  Different than strsignal, sigdescr_np does not
  attempt to translate the return description, both functions return
  NULL for an invalid signal number.

  They should be used instead of sys_siglist or sys_sigabbrev and they
  are both thread and async-signal safe.  These functions are GNU extensions.

* The functions strerrorname_np and strerrordesc_np have been added.  The
  strerroname_np returns error number name (e.g. "EINVAL" for EINVAL) while
  strerrordesc_np returns string describing error number
  (e.g "Invalid argument" for EINVAL).  Different than strerror,
  strerrordesc_np does not attempt to translate the return description, both
  functions return NULL for an invalid error number.

  They should be used instead of sys_errlist and sys_nerr, both are
  thread and async-signal safe.  These functions are GNU extensions.

* AArch64 now supports standard branch protection security hardening
  in glibc when it is built with a GCC that is configured with
  --enable-standard-branch-protection (or if -mbranch-protection=standard
  flag is passed when building both GCC target libraries and glibc,
  in either case a custom GCC is needed).  This includes branch target
  identification (BTI) and pointer authentication for return addresses
  (PAC-RET).  They require armv8.5-a and armv8.3-a architecture
  extensions respectively for the protection to be effective,
  otherwise the used instructions are nops.  User code can use PAC-RET
  without libc support, but BTI requires a libc that is built with BTI
  support, otherwise runtime objects linked into user code will not be
  BTI compatible.

Deprecated and removed features, and other changes affecting compatibility:

* Remove configure option --enable-obsolete-rpc.  Sun RPC is removed
  from glibc.  This includes the rpcgen program, librpcsvc, and the Sun
  RPC header files.  Backward compatibility for old programs is kept
  only for architectures and ABIs that have been added in or before
  glibc 2.31.  New programs need to use TI-RPC
  <http://git.linux-nfs.org/?p=steved/libtirpc.git;a=summary> and
  rpcsvc-proto <https://github.com/thkukuk/rpcsvc-proto>.

* Remove configure option --enable-obsolete-nsl.  libnsl is only built
  as shared library for backward compatibility and the NSS modules "nis"
  and "nisplus" are not built at all and libnsl's headers aren't
  installed.  This compatibility is kept only for architectures and ABIs
  that have been added in or before version 2.28.  Replacement
  implementations based on TI-RPC, which additionally support IPv6, are
  available from <https://github.com/thkukuk/>.  This change does not
  affect the "compat" NSS module, which does not depended on libnsl
  since 2.27 and thus can be used without NIS.

* The deprecated <sys/sysctl.h> header and the sysctl function have been
  removed.  To support old binaries, the sysctl function continues to
  exist as a compatibility symbol (on those architectures which had it),
  but always fails with ENOSYS.  This reflects the removal of the system
  call from all architectures, starting with Linux 5.5.

* The sstk function is no longer available to newly linked binaries.
  Its implementation always returned with a failure, and the function
  was not declared in any header file.

* The legacy signal handling functions siginterrupt, sigpause, sighold,
  sigrelse, sigignore and sigset, and the sigmask macro have been
  deprecated.  Applications should use the sigsuspend, sigprocmask and
  sigaction functions instead.

* ldconfig now defaults to the new format for ld.so.cache. glibc has
  already supported this format for almost 20 years.

* The deprecated arrays sys_siglist, _sys_siglist, and sys_sigabbrev
  are no longer available to newly linked binaries, and their declarations
  have been removed from <string.h>.  They are exported solely as
  compatibility symbols to support old binaries.  All programs should use
  strsignal instead.

* The deprecated symbols sys_errlist, _sys_errlist, sys_nerr, and _sys_nerr
  are no longer available to newly linked binaries, and their declarations
  have been removed from from <stdio.h>.  They are exported solely as
  compatibility symbols to support old binaries.  All programs should use
  strerror or strerror_r instead.

* Both strerror and strerror_l now share the same internal buffer in the
  calling thread, meaning that the returned string pointer may be invalided
  or contents might be overwritten on subsequent calls in the same thread or
  if the thread is terminated.  It makes strerror MT-safe.

* Using weak references to libpthread functions such as pthread_create
  or pthread_key_create to detect the singled-threaded nature of a
  program is an obsolescent feature.  Future versions of glibc will
  define pthread_create within libc.so.6 itself, so such checks will
  always flag the program as multi-threaded.  Applications should check
  the __libc_single_threaded variable declared in
  <sys/single_threaded.h> instead.

* The "files" NSS module no longer supports the "key" database (used for
  secure RPC).  The contents of the /etc/publickey file will be ignored,
  regardless of the settings in /etc/nsswitch.conf.  (This method of
  storing RPC keys only supported the obsolete and insecure AUTH_DES
  flavor of secure RPC.)

* The __morecore and __after_morecore_hook malloc hooks and the default
  implementation __default_morecore have been deprecated.  Applications
  should use malloc interposition to change malloc behavior, and mmap to
  allocate anonymous memory.  A future version of glibc may require that
  applications which use the malloc hooks must preload a special shared
  object, to enable the hooks.

* The hesiod NSS module has been deprecated and will be removed in a
  future version of glibc.  System administrators are encouraged to
  switch to other approaches for networked account databases, such as
  LDAP.

Changes to build and runtime requirements:

* powerpc64le requires GCC 7.4 or newer.  This is required for supporting
  long double redirects.

Security related changes:

  CVE-2016-10228: An infinite loop has been fixed in the iconv program when
  invoked with the -c option and when processing invalid multi-byte input
  sequences.  Reported by Jan Engelhardt.

  CVE-2020-10029: Trigonometric functions on x86 targets suffered from stack
  corruption when they were passed a pseudo-zero argument.  Reported by Guido
  Vranken / ForAllSecure Mayhem.

  CVE-2020-1752: A use-after-free vulnerability in the glob function when
  expanding ~user has been fixed.

  CVE-2020-6096: A signed comparison vulnerability in the ARMv7 memcpy and
  memmove functions has been fixed.  Discovered by Jason Royes and Samual
  Dytrych of the Cisco Security Assessment and Penetration Team (See
  TALOS-2020-1019).

The following bugs are resolved with this release:

  [9809] localedata: ckb_IQ: new Kurdish Sorani locale
  [10441] manual: Backtraces code example lacks error checking
  [10815] librt: [timer_create / SIGEV_THREAD] signalmask of
    timer_sigev_thread dangerous
  [14231] stdio: stdio-common tests memory requirements
  [14578] libc: /proc-based emulation for lchmod, fchmodat
  [16272] dynamic-link: dlopen()ing a DT_FILTER library crashes if
    filtee has constructor
  [19519] locale: iconv(1) with -c option hangs on illegal multi-byte
    sequences (CVE-2016-10228)
  [19737] admin: Doc page “20.5.2 Infinity and NaN” has incorrect HTML
    character entities for infinity & pi
  [20338] libc: Parsing of /etc/gshadow can return bad pointers causing
    segfaults in applications
  [20543] libc: Please move from .gnu.linkonce to comdat
  [22489] network: gcc warns about implicit convertion in
    ICMP6_FILTER_SETPASS with -Wsign-conversion
  [22525] localedata: or_IN  LC_COLLATE does not use copy "iso14651_t1"
  [23294] math: Complex _FloatN functions are redirected to the wrong
    function with -mlong-double-64
  [23296] libc: Data race in setting function descriptor during lazy
    binding
  [23668] dynamic-link: ldconfig: Default to the new format for
    ld.so.cache
  [23819] hurd: hurd: Add C11 thread support
  [23990] build: test-container error out on failure to exec child.
  [23991] build: shell-container typo in run_command_array
  [24638] manual: Error in example of parsing a template string
  [24654] manual: Wrong declaration of wcschr in libc manual
  [24943] dynamic-link: Support DT_AUDIT, DT_DEPAUDIT in the dynamic
    linker
  [25051] dynamic-link: aarch64, powerpc64 uses surplus static tls for
    dynamically loaded dsos
  [25098] nptl: nptl: ctype classification functions are not AS-Safe
  [25219] libc: improve out-of-bounds checking with GCC 10 attribute
    access
  [25262] libc: getcontext/setcontext/swapcontext unnecessarily save and
    restore EAX, ECX and EDX
  [25397] dynamic-link: Legacy bitmap doesn't cover jitted code
  [25414] glob: 'glob' use-after-free bug (CVE-2020-1752)
  [25420] network: Race condition in resolv_conf.c can result in caching
    stale configuration forever
  [25487] math: sinl() stack corruption from crafted input
    (CVE-2020-10029)
  [25506] build: configure: broken detection of STT_GNU_IFUNC when GCC
    defaults to PIE
  [25523] libc: MIPS/Linux inline syscall template is miscompiled
  [25620] libc: Signed comparison vulnerability in the ARMv7 memcpy()
    (CVE-2020-6096)
  [25623] libc: test-sysvmsg, test-sysvsem, test-sysvshm fail with 2.31
    on 32 bit and old kernel
  [25635] libc: arm: Wrong sysdep order selection for soft-fp
  [25639] localedata: Some names of days and months wrongly spelt in
    Occitan
  [25657] libc: sigprocmask() and sigisemptyset() manipulate different
    amount of sigset_t bytes
  [25691] stdio: printf: memory leak when printing long multibyte
    strings
  [25715] libc: system() returns wrong errors when posix_spawn fails
  [25733] malloc: mallopt(M_MXFAST) can set global_max_fast to 0
  [25734] locale: mbrtowc with Big5-HKSCS fails to reset conversion
    state for conversions that produce two Unicode code points
  [25765] nptl: Incorrect futex syscall in __pthread_disable_asynccancel
    for linux x86_64 leads to livelock
  [25788] dynamic-link: [i386] -fno-omit-frame-pointer in CFLAGS causes
    test failures, invalid instruction in ld.so
  [25790] glob: Typo in tst-fnmatch.input
  [25810] libc: x32: Incorrect syscall entries with pointer, off_t and
    size_t
  [25819] localedata: Update locale data to Unicode 13.0.0
  [25824] libc: Abnormal function of strnlen in aarch64
  [25887] dynamic-link: Wasted space in _dl_x86_feature_1[1]
  [25896] libc: Incorrect prctl
  [25902] libc: Bad LOADARGS_N
  [25905] dynamic-link: VSX registers are corrupted during PLT
    resolution when glibc is built with --disable-multi-arch and --with-
    cpu=power9
  [25933] string: Off by one error in __strncmp_avx2 when
    length=VEC_SIZE*4 and strings are at page boundaries can cause a
    segfault
  [25942] nptl: Deadlock on stack_cache_lock between __nptl_setxid and
    exiting detached thread
  [25966] libc: Incorrect access of __x86_shared_non_temporal_threshold
    for x32
  [25976] nss: internal_end*ent in nss_compat may clobber errno, hiding
    ERANGE
  [25999] nptl: Use-after-free issue in pthread_getaddr_default_np
  [26073] math: getpayload() has wrong return value
  [26076] dynamic-link: dlmopen crashes after failing to load
    dependencies in audit mode
  [26120] localedata: column width of  of some Korean
    JUNGSEONG/JONGSEONG characters wrong (should be 0)
  [26128] libc: Incorrect bit_cpu_CLFLUSHOPT
  [26133] libc: Incorrect need_arch_feature_F16C
  [26137] libc: strtod() triggers exception FE_INEXACT on reasonable
    input
  [26149] libc: PKU is usable only if OSPKE is set
  [26173] libc: powerpc64*: Add @notoc to calls to functions that do not
    preserve r2
  [26208] libc: Incorrect bit_cpu_CLFSH
  [26210] network: Incorrect use of hidden symbols for global sunrpc
    variables
  [26211] stdio: printf integer overflow calculating allocation size
  [26214] stdio: printf_fp double free
  [26215] stdio: printf_fp memory leak
  [26232] time: FAIL: support/tst-timespec for 32-bit targets
  [26258] nss: nss_compat should not read input files with mmap
  [26332] string: Incorrect cache line size load causes memory
    corruption in memset

Release Notes
=============

https://sourceware.org/glibc/wiki/Release/2.32

Contributors
============

This release was made possible by the contributions of many people.
The maintainers are grateful to everyone who has contributed
changes or bug reports.  These include:

Adhemerval Zanella
Alan Modra
Alex Butler
Alexander Anisimov
Alistair Francis
Andrea Corallo
Andreas K. Hüttel
Andreas Schwab
Anton Blanchard
Anton Blanchard via Libc-alpha
Arjun Shankar
Aurelien Jarno
Aurélien Aptel
Carlos O'Donell
Chung-Lin Tang
DJ Delorie
David Kilroy
Evgeny Eremin
Eyal Itkin
Fangrui Song
Florian Weimer
Gabriel F. T. Gomes
Girish Joshi
H.J. Lu
John David Anglin
John Marshall
Jonathan Wakely
Joseph Myers
Josh Triplett
Jwtiyar Nariman
Krzysztof Koch
Lexi Shao
Lucas A. M. Magalhaes
Lukasz Majewski
Maciej W. Rozycki
Martin Sebor
Matheus Castanho
Mathieu Desnoyers
Michael Hudson-Doyle
Mike FABIAN
Patsy Franklin
Paul E. Murphy
Paul Eggert
Paul Zimmermann
Petr Vorel
Rafał Lużyński
Rajalakshmi Srinivasaraghavan
Raphael Moreira Zinsly
Rogerio Alves
Samuel Thibault
Sergey
Shen-Ta Hsieh
Siddhesh Poyarekar
Simon Marchi
Stefan Liebler
Sudakshina Das
Sunil K Pandey
Szabolcs Nagy
Tulio Magno Quites Machado Filho
Vineet Gupta
WANG Xuerui
Wilco Dijkstra
guojinhui
kokoye2007
mayshao
mayshao-oc

Open master branch for 2.32 development