Please send GNU C library bug reports via <https://sourceware.org/bugzilla/>
using `glibc' in the "product" field.
+\f
+Version 2.31
+
+Major new features:
+
+* The GNU C Library now supports a feature test macro _ISOC2X_SOURCE to
+ enable features from the draft ISO C2X standard. Only some features from
+ this draft standard are supported by the GNU C Library, and as the draft
+ is under active development, the set of features enabled by this macro is
+ liable to change. Features from C2X are also enabled by _GNU_SOURCE, or
+ by compiling with "gcc -std=gnu2x".
+
+* The <math.h> functions that round their results to a narrower type now
+ have corresponding type-generic macros in <tgmath.h>, as defined in TS
+ 18661-1:2014 and TS 18661-3:2015 as amended by the resolution of
+ Clarification Request 13 to TS 18661-3.
+
+Deprecated and removed features, and other changes affecting compatibility:
+
+* The totalorder and totalordermag functions, and the corresponding
+ functions for other floating-point types, now take pointer arguments to
+ avoid signaling NaNs possibly being converted to quiet NaNs in argument
+ passing. This is in accordance with the resolution of Clarification
+ Request 25 to TS 18661-1, as applied for C2X. Existing binaries that pass
+ floating-point arguments directly will continue to work.
+
+Changes to build and runtime requirements:
+
+ [Add changes to build and runtime requirements here]
+
+Security related changes:
+
+ [Add security related changes here]
+
+The following bugs are resolved with this release:
+
+ [The release manager will add the list generated by
+ scripts/list-fixed-bugs.py just before the release.]
+
\f
Version 2.30
Major new features:
-* Unicode 12.0.0 Support: Character encoding, character type info, and
- transliteration tables are all updated to Unicode 12.0.0, using
+* Unicode 12.1.0 Support: Character encoding, character type info, and
+ transliteration tables are all updated to Unicode 12.1.0, using
generator scripts contributed by Mike FABIAN (Red Hat).
* The dynamic linker accepts the --preload argument to preload shared
objects, in addition to the LD_PRELOAD environment variable.
-* On Linux, the gettid function has been added.
+* The twalk_r function has been added. It is similar to the existing
+ twalk function, but it passes an additional caller-supplied argument
+ to the callback function.
+
+* On Linux, the getdents64, gettid, and tgkill functions have been added.
* Minguo (Republic of China) calendar support has been added as an
alternative calendar for the following locales: zh_TW, cmn_TW, hak_TW,
* The entry for the new Japanese era has been added for ja_JP locale.
+* Memory allocation functions malloc, calloc, realloc, reallocarray, valloc,
+ pvalloc, memalign, and posix_memalign fail now with total object size
+ larger than PTRDIFF_MAX. This is to avoid potential undefined behavior with
+ pointer subtraction within the allocated object, where results might
+ overflow the ptrdiff_t type.
+
+* The dynamic linker no longer refuses to load objects which reference
+ versioned symbols whose implementation has moved to a different soname
+ since the object has been linked. The old error message, symbol
+ FUNCTION-NAME, version SYMBOL-VERSION not defined in file DSO-NAME with
+ link time reference, is gone.
+
+* Add new POSIX-proposed pthread_cond_clockwait, pthread_mutex_clocklock,
+ pthread_rwlock_clockrdlock, pthread_rwlock_clockwrlock and sem_clockwait
+ functions. These behave similarly to their "timed" equivalents, but also
+ accept a clockid_t parameter to determine which clock their timeout should
+ be measured against. All functions allow waiting against CLOCK_MONOTONIC
+ and CLOCK_REALTIME. The decision of which clock to be used is made at the
+ time of the wait (unlike with pthread_condattr_setclock, which requires
+ the clock choice at initialization time).
+
+* On AArch64 the GNU IFUNC resolver call ABI changed: old resolvers still
+ work, new resolvers can use a second argument which can be extended in
+ the future, currently it contains the AT_HWCAP2 value.
+
Deprecated and removed features, and other changes affecting compatibility:
+* The copy_file_range function fails with ENOSYS if the kernel does not
+ support the system call of the same name. Previously, user space
+ emulation was performed, but its behavior did not match the kernel
+ behavior, which was deemed too confusing. Applications which use the
+ copy_file_range function can no longer rely on glibc to provide a fallback
+ on kernels that do not support the copy_file_range system call, and if
+ this function returns ENOSYS, they will need to use their own fallback.
+ Support for copy_file_range for most architectures was added in version
+ 4.5 of the mainline Linux kernel.
+
* The functions clock_gettime, clock_getres, clock_settime,
clock_getcpuclockid, clock_nanosleep were removed from the librt library
for new applications (on architectures which had them). Instead, the
* The obsolete RES_INSECURE1 and RES_INSECURE2 option flags for the DNS stub
resolver have been removed from <resolv.h>.
+* With --enable-bind-now, installed programs are now linked with the
+ BIND_NOW flag.
+
+* Support for the PowerPC SPE ISA extension (powerpc-*-*gnuspe*
+ configurations) has been removed, following the deprecation of this
+ subarchitecture in version 8 of GCC, and its removal in version 9.
+
+* On 32-bit Arm, support for the port-based I/O emulation and the <sys/io.h>
+ header have been removed.
+
+* The Linux-specific <sys/sysctl.h> header and the sysctl function have been
+ deprecated and will be removed from a future version of glibc.
+ Application should directly access /proc instead. For obtaining random
+ bits, the getentropy function can be used.
+
Changes to build and runtime requirements:
* GCC 6.2 or later is required to build the GNU C Library.
The following bugs are resolved with this release:
- [The release manager will add the list generated by
- scripts/list-fixed-bugs.py just before the release.]
+ [2872] locale: Transliteration Cyrillic -> ASCII fails
+ [6399] libc: gettid() should have a wrapper
+ [16573] malloc: mtrace hangs when MALLOC_TRACE is defined
+ [16976] glob: fnmatch unbounded stack VLA for collating symbols
+ [17396] localedata: globbing for locale by [[.collating-element.]]
+ [18035] dynamic-link: pldd does no longer work, enters infinite loop
+ [18465] malloc: memusagestat is built using system C library
+ [18830] locale: iconv -c -f ascii with >buffer size worth of input before
+ invalid input drops valid char
+ [20188] nptl: libpthread IFUNC resolver for vfork can lead to crash
+ [20568] locale: Segfault with wide characters and setlocale/fgetwc/UTF-8
+ [21897] localedata: Afar locales: Fix mon, abmon, and abday
+ [22964] localedata: The Japanese Era name will be changed on May 1, 2019
+ [23352] malloc: __malloc_check_init still defined in public header
+ malloc.h.
+ [23403] nptl: Wrong alignment of TLS variables
+ [23501] libc: nftw() doesn't return dangling symlink's inode
+ [23733] malloc: Check the count before calling tcache_get()
+ [23741] malloc: Missing __attribute_alloc_size__ in many allocation
+ functions
+ [23831] localedata: nl_NL missing LC_NUMERIC thousands_sep
+ [23844] nptl: pthread_rwlock_trywrlock results in hang
+ [23983] argparse: Missing compat versions of argp_failure and argp_error
+ for long double = double
+ [23984] libc: Missing compat versions of err.h and error.h functions for
+ long double = double
+ [23996] localedata: Dutch salutations
+ [24040] libc: riscv64: unterminated call chain in __thread_start
+ [24047] network: libresolv should use IP_RECVERR/IPV6_RECVERR to avoid
+ long timeouts
+ [24051] stdio: puts and putchar ouput to _IO_stdout instead of stdout
+ [24059] nss: nss_files: get_next_alias calls fgets_unlocked without
+ checking for NULL.
+ [24114] regex: regexec buffer read overrun in "grep -i
+ '\(\(\)*.\)*\(\)\(\)\1'"
+ [24122] libc: Segfaults if 0 returned from la_version
+ [24153] stdio: Some input functions do not react to stdin assignment
+ [24155] string: x32 memcmp can treat positive length as 0 (if sign bit in
+ RDX is set) (CVE-2019-7309)
+ [24161] nptl: __run_fork_handlers self-deadlocks in malloc/tst-mallocfork2
+ [24164] libc: Systemtap probes need to use "nr" constraint on 32-bit Arm,
+ not the default "nor"
+ [24166] dynamic-link: Dl_serinfo.dls_serpath[1] in dlfcn.h causes UBSAN
+ false positives, change to modern flexible array
+ [24180] nptl: pthread_mutex_trylock does not use the correct order of
+ instructions while maintaining the robust mutex list due to missing
+ compiler barriers.
+ [24194] librt: Non-compatibility symbols for clock_gettime etc. cause
+ unnecessary librt dependencies
+ [24200] localedata: Revert first_weekday removal in en_IE locale
+ [24211] nptl: Use-after-free in Systemtap probe in pthread_join
+ [24215] nptl: pthread_timedjoin_np should be a cancellation point
+ [24216] malloc: Check for large bin list corruption when inserting
+ unsorted chunk
+ [24228] stdio: old x86 applications that use legacy libio crash on exit
+ [24231] dynamic-link: [sparc64] R_SPARC_H34 implementation falls through
+ to R_SPARC_H44
+ [24293] localedata: Missing Minguo calendar support for TW locales
+ [24296] localedata: Orthographic mistakes in 'day' and 'abday' sections in
+ tt_RU (Tatar) locale
+ [24307] localedata: Update locale data to Unicode 12.0.0
+ [24323] dynamic-link: dlopen should not be able open PIE objects
+ [24335] build: "Obsolete types detected" with Linux 5.0 headers
+ [24369] localedata: Orthographic mistakes in 'mon' and 'abmon' sections in
+ tt_RU (Tatar) locale
+ [24370] localedata: Add lang_name for tt_RU locale
+ [24372] locale: Binary locale files are not architecture independent
+ [24394] time: strptime %Ey mis-parses final year of era
+ [24476] dynamic-link: __libc_freeres triggers bad free in libdl if dlerror
+ was not used
+ [24506] dynamic-link: FAIL: elf/tst-pldd with --enable-hardcoded-path-in-
+ tests
+ [24531] malloc: Malloc tunables give tcache assertion failures
+ [24532] libc: conform/arpa/inet.h failures due to linux kernel 64-bit
+ time_t changes
+ [24535] localedata: Update locale data to Unicode 12.1.0
+ [24537] build: nptl/tst-eintr1 test case can hit task limits on some
+ kernels and break testing
+ [24544] build: elf/tst-pldd doesn't work if you install with a --prefix
+ [24556] build: [GCC 9] error: ‘%s’ directive argument is null
+ [-Werror=format-overflow=]
+ [24570] libc: alpha: compat msgctl uses __IPC_64
+ [24584] locale: Data race in __wcsmbs_clone_conv
+ [24588] stdio: Remove codecvt vtables from libio
+ [24603] math: sysdeps/ieee754/dbl-64/branred.c is slow when compiled with
+ -O3 -march=skylake
+ [24614] localedata: nl_NL LC_MONETARY doesn't match CLDR 35
+ [24632] stdio: Old binaries which use freopen with default stdio handles
+ crash
+ [24640] libc: __ppc_get_timebase_freq() always return 0 when using static
+ linked glibc
+ [24652] localedata: szl_PL spelling correction
+ [24695] nss: nss_db: calling getpwent after endpwent crashes
+ [24696] nss: endgrent() clobbers errno=ERRNO for 'group: db files' entry
+ in /etc/nsswitch.conf
+ [24699] libc: mmap64 with very large offset broken on MIPS64 n32
+ [24740] libc: getdents64 type confusion
+ [24741] dynamic-link: ld.so should not require that a versioned symbol is
+ always implemented in the same library
+ [24744] libc: Remove copy_file_range emulation
+ [24757] malloc: memusagestat is linked against system libpthread
+ [24794] libc: Partial test suite run builds corrupt test-in-container
+ testroot
\f
Version 2.29
1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
- Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
+ Visit <https://sourceware.org/bugzilla/> for the details of each bug.
* As of this release, GCC 4 can be used to compile the C Library.
737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
777, 787, 821, 822, 823, 825
- Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
+ Visit <https://sourceware.org/bugzilla/> for the details of each bug.
\f
Version 2.3.4
projects / thirdparty / glibc.git / blobdiff