1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2018 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <https://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
12 * A new convenience target has been added for distribution maintainers
13 to build and install all locales as directories with files. The new
14 target is run by issuing the following command in your build tree:
15 'make localedata/install-locale-files', with an optional DESTDIR
16 to set the install root if you wish to install into a non-default
19 Deprecated and removed features, and other changes affecting compatibility:
21 * The glibc.tune tunable namespace has been renamed to glibc.cpu and the
22 tunable glibc.tune.cpu has been renamed to glibc.cpu.name.
24 Changes to build and runtime requirements:
26 [Add changes to build and runtime requirements here]
28 Security related changes:
30 [Add security related changes here]
32 The following bugs are resolved with this release:
34 [The release manager will add the list generated by
35 scripts/list-fixed-bugs.py just before the release.]
42 * The localization data for ISO 14651 is updated to match the 2016
43 Edition 4 release of the standard, this matches data provided by
44 Unicode 9.0.0. This update introduces significant improvements to the
45 collation of Unicode characters. This release deviates slightly from
46 the standard in that the collation element ordering for lowercase and
47 uppercase LATIN script characters is adjusted to ensure that regular
48 expressions with ranges like [a-z] and [A-Z] don't interleave e.g. A
49 is not matched by [a-z]. With the update many locales have been
50 updated to take advantage of the new collation information. The new
51 collation information has increased the size of the compiled locale
52 archive or binary locales.
54 * The GNU C Library can now be compiled with support for Intel CET, AKA
55 Intel Control-flow Enforcement Technology. When the library is built
56 with --enable-cet, the resulting glibc is protected with indirect
57 branch tracking (IBT) and shadow stack (SHSTK). CET-enabled glibc is
58 compatible with all existing executables and shared libraries. This
59 feature is currently supported on i386, x86_64 and x32 with GCC 8 and
60 binutils 2.29 or later. Note that CET-enabled glibc requires CPUs
61 capable of multi-byte NOPs, like x86-64 processors as well as Intel
62 Pentium Pro or newer. NOTE: --enable-cet has been tested for i686,
63 x86_64 and x32 on non-CET processors. --enable-cet has been tested
64 for x86_64 and x32 on CET SDVs, but Intel CET support hasn't been
67 * The GNU C Library now has correct support for ABSOLUTE symbols
68 (SHN_ABS-relative symbols). Previously such ABSOLUTE symbols were
69 relocated incorrectly or in some cases discarded. The GNU linker can
70 make use of the newer semantics, but it must communicate it to the
71 dynamic loader by setting the ELF file's identification (EI_ABIVERSION
72 field) to indicate such support is required.
74 * Unicode 11.0.0 Support: Character encoding, character type info, and
75 transliteration tables are all updated to Unicode 11.0.0, using
76 generator scripts contributed by Mike FABIAN (Red Hat).
78 * Optimized generic sinf, cosf and sincosf.
80 * <math.h> functions that round their results to a narrower type are added
81 from TS 18661-1:2014 and TS 18661-3:2015:
83 - fadd, faddl, daddl and corresponding fMaddfN, fMaddfNx, fMxaddfN and
86 - fsub, fsubl, dsubl and corresponding fMsubfN, fMsubfNx, fMxsubfN and
89 - fmul, fmull, dmull and corresponding fMmulfN, fMmulfNx, fMxmulfN and
92 - fdiv, fdivl, ddivl and corresponding fMdivfN, fMdivfNx, fMxdivfN and
95 * Two grammatical forms of month names are now supported for the following
96 languages: Armenian, Asturian, Catalan, Czech, Kashubian, Occitan, Ossetian,
97 Scottish Gaelic, Upper Sorbian, and Walloon. The following languages now
98 support two grammatical forms in abbreviated month names: Catalan, Greek,
101 * Newly added locales: Lower Sorbian (dsb_DE) and Yakut (sah_RU) also
102 include the support for two grammatical forms of month names.
104 * Building and running on GNU/Hurd systems now works without out-of-tree
107 * The renameat2 function has been added, a variant of the renameat function
108 which has a flags argument. If the flags are zero, the renameat2 function
109 acts like renameat. If the flag is not zero and there is no kernel
110 support for renameat2, the function will fail with an errno value of
111 EINVAL. This is different from the existing gnulib function renameatu,
112 which performs a plain rename operation in case of a RENAME_NOREPLACE
113 flags and a non-existing destination (and therefore has a race condition
114 that can clobber the destination inadvertently).
116 * The statx function has been added, a variant of the fstatat64
117 function with an additional flags argument. If there is no direct
118 kernel support for statx, glibc provides basic stat support based on
119 the fstatat64 function.
121 * IDN domain names in getaddrinfo and getnameinfo now use the system libidn2
122 library if installed. libidn2 version 2.0.5 or later is recommended. If
123 libidn2 is not available, internationalized domain names are not encoded
124 or decoded even if the AI_IDN or NI_IDN flags are passed to getaddrinfo or
125 getnameinfo. (getaddrinfo calls with non-ASCII names and AI_IDN will fail
126 with an encoding error.) Flags which used to change the IDN encoding and
127 decoding behavior (AI_IDN_ALLOW_UNASSIGNED, AI_IDN_USE_STD3_ASCII_RULES,
128 NI_IDN_ALLOW_UNASSIGNED, NI_IDN_USE_STD3_ASCII_RULES) have been
129 deprecated. They no longer have any effect.
131 * Parsing of dynamic string tokens in DT_RPATH, DT_RUNPATH, DT_NEEDED,
132 DT_AUXILIARY, and DT_FILTER has been expanded to support the full
133 range of ELF gABI expressions including such constructs as
134 '$ORIGIN$ORIGIN' (if valid). For SUID/GUID applications the rules
135 have been further restricted, and where in the past a dynamic string
136 token sequence may have been interpreted as a literal string it will
137 now cause a load failure. These load failures were always considered
138 unspecified behaviour from the perspective of the dynamic loader, and
139 for safety are now load errors e.g. /foo/${ORIGIN}.so in DT_NEEDED
140 results in a load failure now.
142 * Support for ISO C threads (ISO/IEC 9899:2011) has been added. The
143 implementation includes all the standard functions provided by
146 - thrd_current, thrd_equal, thrd_sleep, thrd_yield, thrd_create,
147 thrd_detach, thrd_exit, and thrd_join for thread management.
149 - mtx_init, mtx_lock, mtx_timedlock, mtx_trylock, mtx_unlock, and
150 mtx_destroy for mutual exclusion.
152 - call_once for function call synchronization.
154 - cnd_broadcast, cnd_destroy, cnd_init, cnd_signal, cnd_timedwait, and
155 cnd_wait for conditional variables.
157 - tss_create, tss_delete, tss_get, and tss_set for thread-local storage.
159 Application developers must link against libpthread to use ISO C threads.
161 Deprecated and removed features, and other changes affecting compatibility:
163 * The nonstandard header files <libio.h> and <_G_config.h> are no longer
164 installed. Software that was using either header should be updated to
165 use standard <stdio.h> interfaces instead.
167 * The stdio functions 'getc' and 'putc' are no longer defined as macros.
168 This was never required by the C standard, and the macros just expanded
169 to call alternative names for the same functions. If you hoped getc and
170 putc would provide performance improvements over fgetc and fputc, instead
171 investigate using (f)getc_unlocked and (f)putc_unlocked, and, if
172 necessary, flockfile and funlockfile.
174 * All stdio functions now treat end-of-file as a sticky condition. If you
175 read from a file until EOF, and then the file is enlarged by another
176 process, you must call clearerr or another function with the same effect
177 (e.g. fseek, rewind) before you can read the additional data. This
178 corrects a longstanding C99 conformance bug. It is most likely to affect
179 programs that use stdio to read interactive input from a terminal.
182 * The macros 'major', 'minor', and 'makedev' are now only available from
183 the header <sys/sysmacros.h>; not from <sys/types.h> or various other
184 headers that happen to include <sys/types.h>. These macros are rarely
185 used, not part of POSIX nor XSI, and their names frequently collide with
186 user code; see https://sourceware.org/bugzilla/show_bug.cgi?id=19239 for
189 <sys/sysmacros.h> is a GNU extension. Portable programs that require
190 these macros should first include <sys/types.h>, and then include
191 <sys/sysmacros.h> if __GNU_LIBRARY__ is defined.
193 * The tilegx*-*-linux-gnu configurations are no longer supported.
195 * The obsolete function ustat is no longer available to newly linked
196 binaries; the headers <ustat.h> and <sys/ustat.h> have been removed. This
197 function has been deprecated in favor of fstatfs and statfs.
199 * The obsolete function nfsservctl is no longer available to newly linked
200 binaries. This function was specific to systems using the Linux kernel
201 and could not usefully be used with the GNU C Library on systems with
202 version 3.1 or later of the Linux kernel.
204 * The obsolete function name llseek is no longer available to newly linked
205 binaries. This function was specific to systems using the Linux kernel
206 and was not declared in a header. Programs should use the lseek64 name
207 for this function instead.
209 * The AI_IDN_ALLOW_UNASSIGNED and NI_IDN_ALLOW_UNASSIGNED flags for the
210 getaddrinfo and getnameinfo functions have been deprecated. The behavior
211 previously selected by them is now always enabled.
213 * The AI_IDN_USE_STD3_ASCII_RULES and NI_IDN_USE_STD3_ASCII_RULES flags for
214 the getaddrinfo and getnameinfo functions have been deprecated. The STD3
215 restriction (rejecting '_' in host names, among other things) has been
216 removed, for increased compatibility with non-IDN name resolution.
218 * The fcntl function now have a Long File Support variant named fcntl64. It
219 is added to fix some Linux Open File Description (OFD) locks usage on non
220 LFS mode. As for others *64 functions, fcntl64 semantics are analogous with
221 fcntl and LFS support is handled transparently. Also for Linux, the OFD
222 locks act as a cancellation entrypoint.
224 * The obsolete functions encrypt, encrypt_r, setkey, setkey_r, cbc_crypt,
225 ecb_crypt, and des_setparity are no longer available to newly linked
226 binaries, and the headers <rpc/des_crypt.h> and <rpc/rpc_des.h> are no
227 longer installed. These functions encrypted and decrypted data with the
228 DES block cipher, which is no longer considered secure. Software that
229 still uses these functions should switch to a modern cryptography library,
232 * Reflecting the removal of the encrypt and setkey functions above, the
233 macro _XOPEN_CRYPT is no longer defined. As a consequence, the crypt
234 function is no longer declared unless _DEFAULT_SOURCE or _GNU_SOURCE is
237 * The obsolete function fcrypt is no longer available to newly linked
238 binaries. It was just another name for the standard function crypt,
239 and it has not appeared in any header file in many years.
241 * We have tentative plans to hand off maintenance of the passphrase-hashing
242 library, libcrypt, to a separate development project that will, we hope,
243 keep up better with new passphrase-hashing algorithms. We will continue
244 to declare 'crypt' in <unistd.h>, and programs that use 'crypt' or
245 'crypt_r' should not need to change at all; however, distributions will
246 need to install <crypt.h> and libcrypt from a separate project.
248 In this release, if the configure option --disable-crypt is used, glibc
249 will not install <crypt.h> or libcrypt, making room for the separate
250 project's versions of these files. The plan is to make this the default
251 behavior in a future release.
253 Changes to build and runtime requirements:
255 GNU make 4.0 or later is now required to build glibc.
257 Security related changes:
259 CVE-2016-6261, CVE-2016-6263, CVE-2017-14062: Various vulnerabilities have
260 been fixed by removing the glibc-internal IDNA implementation and using
261 the system-provided libidn2 library instead. Originally reported by Hanno
262 Böck and Christian Weisgerber.
264 CVE-2017-18269: An SSE2-based memmove implementation for the i386
265 architecture could corrupt memory. Reported by Max Horn.
267 CVE-2018-11236: Very long pathname arguments to realpath function could
268 result in an integer overflow and buffer overflow. Reported by Alexey
271 CVE-2018-11237: The mempcpy implementation for the Intel Xeon Phi
272 architecture could write beyond the target buffer, resulting in a buffer
273 overflow. Reported by Andreas Schwab.
275 The following bugs are resolved with this release:
277 [1190] stdio: fgetc()/fread() behaviour is not POSIX compliant
278 [6889] manual: 'PWD' mentioned but not specified
279 [13575] libc: SSIZE_MAX defined as LONG_MAX is inconsistent with ssize_t,
280 when __WORDSIZE != 64
281 [13762] regex: re_search etc. should return -2 on memory exhaustion
282 [13888] build: /tmp usage during testing
283 [13932] math: dbl-64 pow unexpectedly slow for some inputs
284 [14092] nptl: Support C11 threads
285 [14095] localedata: Review / update collation data from Unicode / ISO
287 [14508] libc: -Wformat warnings
288 [14553] libc: Namespace pollution loff_t in sys/types.h
289 [14890] libc: Make NT_PRFPREG canonical.
290 [15105] libc: Extra PLT references with -Os
291 [15512] libc: __bswap_constant_16 not compiled when -Werror -Wsign-
293 [16335] manual: Feature test macro documentation incomplete and out of
295 [16552] libc: Unify umount implementations in terms of umount2
296 [17082] libc: htons et al.: statement-expressions prevent use on global
297 scope with -O1 and higher
298 [17343] libc: Signed integer overflow in /stdlib/random_r.c
299 [17438] localedata: pt_BR: wrong d_fmt delimiter
300 [17662] libc: please implement binding for the new renameat2 syscall
301 [17721] libc: __restrict defined as /* Ignore */ even in c11
302 [17979] libc: inconsistency between uchar.h and stdint.h
303 [18018] dynamic-link: Additional $ORIGIN handling issues (CVE-2011-0536)
304 [18023] libc: extend_alloca is broken (questionable pointer comparison,
305 horrible machine code)
306 [18124] libc: hppa: setcontext erroneously returns -1 as exit code for
308 [18471] libc: llseek should be a compat symbol
309 [18473] soft-fp: [powerpc-nofpu] __sqrtsf2, __sqrtdf2 should be compat
311 [18991] nss: nss_files skips large entry in database
312 [19239] libc: Including stdlib.h ends up with macros major and minor being
314 [19463] libc: linknamespace failures when compiled with -Os
315 [19485] localedata: csb_PL: Update month translations + add yesstr/nostr
316 [19527] locale: Normalized charset name not recognized by setlocale
317 [19667] string: Missing Sanity Check for malloc calls in file 'testcopy.c'
318 [19668] libc: Missing Sanity Check for malloc() in file 'tst-setcontext-
320 [19728] network: out of bounds stack read in libidn function
321 idna_to_ascii_4i (CVE-2016-6261)
322 [19729] network: out of bounds heap read on invalid utf-8 inputs in
323 stringprep_utf8_nfkc_normalize (CVE-2016-6263)
324 [19818] dynamic-link: Absolute (SHN_ABS) symbols incorrectly relocated by
326 [20079] libc: Add SHT_X86_64_UNWIND to elf.h
327 [20251] libc: 32bit programs pass garbage in struct flock for OFD locks
328 [20419] dynamic-link: files with large allocated notes crash in
330 [20530] libc: bswap_16 should use __builtin_bswap16() when available
331 [20890] dynamic-link: ldconfig: fsync the files before atomic rename
332 [20980] manual: CFLAGS environment variable replaces vital options
333 [21163] regex: Assertion failure in pop_fail_stack when executing a
334 malformed regexp (CVE-2015-8985)
335 [21234] manual: use of CFLAGS makes glibc detect no optimization
336 [21269] dynamic-link: i386 sigaction sa_restorer handling is wrong
337 [21313] build: Compile Error GCC 5.4.0 MIPS with -0S
338 [21314] build: Compile Error GCC 5.2.0 MIPS with -0s
339 [21508] locale: intl/tst-gettext failure with latest msgfmt
340 [21547] localedata: Tibetan script collation broken (Dzongkha and Tibetan)
341 [21812] network: getifaddrs() returns entries with ifa_name == NULL
342 [21895] libc: ppc64 setjmp/longjmp not fully interoperable with static
344 [21942] dynamic-link: _dl_dst_substitute incorrectly handles $ORIGIN: with
346 [22241] localedata: New locale: Yakut (Sakha) locale for Russia (sah_RU)
347 [22247] network: Integer overflow in the decode_digit function in
348 puny_decode.c in libidn (CVE-2017-14062)
349 [22342] nscd: NSCD not properly caching netgroup
350 [22391] nptl: Signal function clear NPTL internal symbols inconsistently
351 [22550] localedata: es_ES locale (and other es_* locales): collation
352 should treat ñ as a primary different character, sync the collation
353 for Spanish with CLDR
354 [22638] dynamic-link: sparc: static binaries are broken if glibc is built
355 by gcc configured with --enable-default-pie
356 [22639] time: year 2039 bug for localtime etc. on 64-bit platforms
357 [22644] string: memmove-sse2-unaligned on 32bit x86 produces garbage when
358 crossing 2GB threshold (CVE-2017-18269)
359 [22646] localedata: redundant data (LC_TIME) for es_CL, es_CU, es_EC and
361 [22735] time: Misleading typo in time.h source comment regarding
363 [22753] libc: preadv2/pwritev2 fallback code should handle offset=-1
364 [22761] libc: No trailing `%n' conversion specifier in FMT passed from
365 `__assert_perror_fail ()' to `__assert_fail_base ()'
366 [22766] libc: all glibc internal dlopen should use RTLD_NOW for robust
368 [22786] libc: Stack buffer overflow in realpath() if input size is close
369 to SSIZE_MAX (CVE-2018-11236)
370 [22787] dynamic-link: _dl_check_caller returns false when libc is linked
371 through an absolute DT_NEEDED path
372 [22792] build: tcb-offsets.h dependency dropped
373 [22797] libc: pkey_get() uses non-reserved name of argument
374 [22807] libc: PTRACE_* constants missing for powerpc
375 [22818] glob: posix/tst-glob_lstat_compat failure on alpha
376 [22827] dynamic-link: RISC-V ELF64 parser mis-reads flag in ldconfig
377 [22830] malloc: malloc_stats doesn't restore cancellation state on stderr
378 [22848] localedata: ca_ES: update date definitions from CLDR
379 [22862] build: _DEFAULT_SOURCE is defined even when _ISOC11_SOURCE is
380 [22884] math: RISCV fmax/fmin handle signalling NANs incorrectly
381 [22896] localedata: Update locale data for an_ES
382 [22902] math: float128 test failures with GCC 8
383 [22918] libc: multiple common of `__nss_shadow_database'
384 [22919] libc: sparc32: backtrace yields infinite backtrace with
386 [22926] libc: FTBFS on powerpcspe
387 [22932] localedata: lt_LT: Update of abbreviated month names from CLDR
389 [22937] localedata: Greek (el_GR, el_CY) locales actually need ab_alt_mon
390 [22947] libc: FAIL: misc/tst-preadvwritev2
391 [22963] localedata: cs_CZ: Add alternative month names
392 [22987] math: [powerpc/sparc] fdim inlines errno, exceptions handling
393 [22996] localedata: change LC_PAPER to en_US in es_BO locale
394 [22998] dynamic-link: execstack tests are disabled when SELinux is
396 [23005] network: Crash in __res_context_send after memory allocation
398 [23007] math: strtod cannot handle -nan
399 [23024] nss: getlogin_r is performing NSS lookups when loginid isn't set
400 [23036] regex: regex equivalence class regression
401 [23037] libc: initialize msg_flags to zero for sendmmsg() calls
402 [23069] libc: sigaction broken on riscv64-linux-gnu
403 [23094] localedata: hr_HR: wrong thousands_sep and mon_thousands_sep
404 [23102] dynamic-link: Incorrect parsing of multiple consecutive $variable
405 patterns in runpath entries (e.g. $ORIGIN$ORIGIN)
406 [23137] nptl: s390: pthread_join sometimes block indefinitely (on 31bit
407 and libc build with -Os)
408 [23140] localedata: More languages need two forms of month names
409 [23145] libc: _init/_fini aren't marked as hidden
410 [23152] localedata: gd_GB: Fix typo in "May" (abbreviated)
411 [23171] math: C++ iseqsig for long double converts arguments to double
412 [23178] nscd: sudo will fail when it is run in concurrent with commands
413 that changes /etc/passwd
414 [23196] string: __mempcpy_avx512_no_vzeroupper mishandles large copies
416 [23206] dynamic-link: static-pie + dlopen breaks debugger interaction
417 [23208] localedata: New locale - Lower Sorbian (dsb)
418 [23233] regex: Memory leak in build_charclass_op function in file
420 [23236] stdio: Harden function pointers in _IO_str_fields
421 [23250] nptl: Offset of __private_ss differs from GCC
422 [23253] math: tgamma test suite failures on i686 with -march=x86-64
423 -mtune=generic -mfpmath=sse
424 [23259] dynamic-link: Unsubstituted ${ORIGIN} remains in DT_NEEDED for
426 [23264] libc: posix_spawnp wrongly executes ENOEXEC in non compat mode
427 [23266] nis: stringop-truncation warning with new gcc8.1 in nisplus-
429 [23272] math: fma(INFINITY,INFIITY,0.0) should be INFINITY
430 [23277] math: nan function should not have const attribute
431 [23279] math: scanf and strtod wrong for some hex floating-point
432 [23280] math: wscanf rounds wrong; wcstod is ok for negative numbers and
434 [23290] localedata: IBM273 is not equivalent to ISO-8859-1
435 [23303] build: undefined reference to symbol
436 '__parse_hwcap_and_convert_at_platform@@GLIBC_2.23'
437 [23307] dynamic-link: Absolute symbols whose value is zero ignored in
439 [23313] stdio: libio vtables validation and standard file object
441 [23329] libc: The __libc_freeres infrastructure is not properly run across
443 [23349] libc: Various glibc headers no longer compatible with
445 [23351] malloc: Remove unused code related to heap dumps and malloc
447 [23363] stdio: stdio-common/tst-printf.c has non-free license
448 [23396] regex: Regex equivalence regression in single-byte locales
449 [23422] localedata: oc_FR: More updates of locale data
450 [23442] build: New warning with GCC 8
451 [23448] libc: Out of bounds access in IBM-1390 converter
452 [23456] libc: Wrong index_cpu_LZCNT
453 [23458] build: tst-get-cpu-features-static isn't added to tests
454 [23459] libc: COMMON_CPUID_INDEX_80000001 isn't populated for Intel
456 [23467] dynamic-link: x86/CET: A property note parser bug
463 * The GNU C Library can now be compiled with support for building static
464 PIE executables (See --enable-static-pie in INSTALL). These static PIE
465 executables are like static executables but can be loaded at any address
466 and provide additional security hardening benefits at the cost of some
467 memory and performance. When the library is built with --enable-static-pie
468 the resulting libc.a is usable with GCC 8 and above to create static PIE
469 executables using the GCC option '-static-pie'. This feature is currently
470 supported on i386, x86_64 and x32 with binutils 2.29 or later, and on
471 aarch64 with binutils 2.30 or later.
473 * Optimized x86-64 asin, atan2, exp, expf, log, pow, atan, sin, cosf,
474 sinf, sincosf and tan with FMA, contributed by Arjan van de Ven and
477 * Optimized x86-64 trunc and truncf for processors with SSE4.1.
479 * Optimized generic expf, exp2f, logf, log2f, powf, sinf, cosf and sincosf.
481 * In order to support faster and safer process termination the malloc API
482 family of functions will no longer print a failure address and stack
483 backtrace after detecting heap corruption. The goal is to minimize the
484 amount of work done after corruption is detected and to avoid potential
485 security issues in continued process execution. Reducing shutdown time
486 leads to lower overall process restart latency, so there is benefit both
487 from a security and performance perspective.
489 * The abort function terminates the process immediately, without flushing
490 stdio streams. Previous glibc versions used to flush streams, resulting
491 in deadlocks and further data corruption. This change also affects
492 process aborts as the result of assertion failures.
494 * On platforms where long double has the IEEE binary128 format (aarch64,
495 alpha, mips64, riscv, s390 and sparc), the math library now implements
496 _Float128 interfaces for that type, as defined by ISO/IEC TS 18661-3:2015.
497 These are the same interfaces added in version 2.26 for some platforms where
498 this format is supported but is not the format of long double.
500 * On platforms with support for _Float64x (aarch64, alpha, i386, ia64,
501 mips64, powerpc64le, riscv, s390, sparc and x86_64), the math library now
502 implements interfaces for that type, as defined by ISO/IEC TS
503 18661-3:2015. These are corresponding interfaces to those supported for
506 * The math library now implements interfaces for the _Float32, _Float64 and
507 _Float32x types, as defined by ISO/IEC TS 18661-3:2015. These are
508 corresponding interfaces to those supported for _Float128.
510 * glibc now implements the memfd_create and mlock2 functions on Linux.
512 * Support for memory protection keys was added. The <sys/mman.h> header now
513 declares the functions pkey_alloc, pkey_free, pkey_mprotect, pkey_set,
516 * The copy_file_range function was added.
518 * Optimized memcpy, mempcpy, memmove, and memset for sparc M7.
520 * The ldconfig utility now processes `include' directives using the C/POSIX
521 collation ordering. Previous glibc versions used locale-specific
522 ordering, the change might break systems that relied on that.
524 * Support for two grammatical forms of month names has been added.
525 In a call to strftime, the "%B" and "%b" format specifiers will now
526 produce the grammatical form required when the month is used as part
527 of a complete date. New "%OB" and "%Ob" specifiers produce the form
528 required when the month is named by itself. For instance, in Greek
529 and in many Slavic and Baltic languages, "%B" will produce the month
530 in genitive case, and "%OB" will produce the month in nominative case.
532 In a call to strptime, "%B", "%b", "%h", "%OB", "%Ob", and "%Oh"
533 are all valid and will all accept any known form of month
534 name---standalone or complete, abbreviated or full. In a call to
535 nl_langinfo, the query constants MON_1..12 and ABMON_1..12 return
536 the strings used by "%B" and "%b", respectively. New query
537 constants ALTMON_1..12 and _NL_ABALTMON_1..12 return the strings
538 used by "%OB" and "%Ob", respectively.
540 In a locale definition file, use "alt_mon" and "ab_alt_mon" to
541 define the strings for %OB and %Ob, respectively; these have the
542 same syntax as "mon" and "abmon". These arrays are optional; if they
543 are not provided then they have the same content as "mon" and "abmon",
546 These features are provided for locales which define "alt_mon" and/or
547 "ab_alt_mon" in their locale source data. This release includes such
548 alternative month name data for the following languages: Belarusian,
549 Croatian, Greek, Lithuanian, Polish, Russian, and Ukrainian.
551 This feature is currently a GNU extension, but it is expected to
552 be added to the next revision of POSIX, and it is also already
553 available on some BSD-derived operating systems.
555 This feature will cause existing statically compiled applications
556 to fail to load locales and fall back to the builtin C/POSIX locales.
557 See notes below for other changes affecting compatibility.
559 * Support for the RISC-V ISA running on Linux has been added. This port
560 requires at least binutils-2.30, gcc-7.3.0, and linux-4.15; and is supported
561 for the following ISA and ABI pairs:
567 Deprecated and removed features, and other changes affecting compatibility:
569 * Statically compiled applications attempting to load locales compiled for the
570 GNU C Library version 2.27 will fail and fall back to the builtin C/POSIX
571 locale. The reason for this is that the addition of the new "%OB" and "%Ob",
572 support for two grammatical forms of the month names, also extends the locale
573 data binary format. Static applications needing locale support must be
574 recompiled to match the runtime and data they are deployed with. In some
575 distributions there is an upgrade window where dynamically linked applications
576 may use a new library but the old locale data and also fall back to the
577 builtin C/POSIX locales; restarting the application process is sufficient to
580 * Support for statically linked applications which call dlopen is deprecated
581 and will be removed in a future version of glibc. Applications which call
582 dlopen need to be linked dynamically instead.
584 * Support for old programs which use internal stdio data structures and
585 functions is deprecated. This includes programs which use the C++ streams
586 provided by libstdc++ in GCC 2.95. Programs which use the internal
587 symbols _IO_adjust_wcolumn, _IO_default_doallocate, _IO_default_finish,
588 _IO_default_pbackfail, _IO_default_uflow, _IO_default_xsgetn,
589 _IO_default_xsputn, _IO_doallocbuf, _IO_do_write, _IO_file_attach,
590 _IO_file_close, _IO_file_close_it, _IO_file_doallocate, _IO_file_fopen,
591 _IO_file_init, _IO_file_jumps, _IO_fileno, _IO_file_open,
592 _IO_file_overflow, _IO_file_read, _IO_file_seek, _IO_file_seekoff,
593 _IO_file_setbuf, _IO_file_stat, _IO_file_sync, _IO_file_underflow,
594 _IO_file_write, _IO_file_xsputn, _IO_flockfile, _IO_flush_all,
595 _IO_flush_all_linebuffered, _IO_free_backup_area, _IO_free_wbackup_area,
596 _IO_init, _IO_init_marker, _IO_init_wmarker, _IO_iter_begin, _IO_iter_end,
597 _IO_iter_file, _IO_iter_next, _IO_least_wmarker, _IO_link_in,
598 _IO_list_all, _IO_list_lock, _IO_list_resetlock, _IO_list_unlock,
599 _IO_marker_delta, _IO_marker_difference, _IO_remove_marker, _IO_seekmark,
600 _IO_seekwmark, _IO_str_init_readonly, _IO_str_init_static,
601 _IO_str_overflow, _IO_str_pbackfail, _IO_str_seekoff, _IO_str_underflow,
602 _IO_switch_to_main_wget_area, _IO_switch_to_wget_mode,
603 _IO_unsave_wmarkers, _IO_wdefault_doallocate, _IO_wdefault_finish,
604 _IO_wdefault_pbackfail, _IO_wdefault_setbuf, _IO_wdefault_uflow,
605 _IO_wdefault_xsgetn, _IO_wdefault_xsputn, _IO_wdoallocbuf, _IO_wdo_write,
606 _IO_wfile_jumps, _IO_wfile_overflow, _IO_wfile_sync, _IO_wfile_underflow,
607 _IO_wfile_xsputn, _IO_wmarker_delta, or _IO_wsetb may stop working with a
608 future version of glibc. Unlike other symbol removals, these old
609 applications will not be supported using compatibility symbols.
611 * On GNU/Linux, the obsolete Linux constant PTRACE_SEIZE_DEVEL is no longer
612 defined by <sys/ptrace.h>.
614 * libm no longer supports SVID error handling (calling a user-provided
615 matherr function on error) or the _LIB_VERSION variable to control error
616 handling. (SVID error handling and the _LIB_VERSION variable still work
617 for binaries linked against older versions of the GNU C Library.) The
618 libieee.a library is no longer provided. math.h no longer defines struct
619 exception, or the macros X_TLOSS, DOMAIN, SING, OVERFLOW, UNDERFLOW,
620 TLOSS, PLOSS and HUGE.
622 * The libm functions pow10, pow10f and pow10l are no longer supported for
623 new programs. Programs should use the standard names exp10, exp10f and
624 exp10l for these functions instead.
626 * The mcontext_t type is no longer the same as struct sigcontext. On
627 platforms where it was previously the same, this changes the C++ name
628 mangling for interfaces involving this type.
630 * The add-ons mechanism for building additional packages at the same time as
631 glibc has been removed. The --enable-add-ons configure option is now
634 * The --without-fp configure option is now ignored. Whether hardware
635 floating-point instructions are used is now configured based on whether
636 the compiler used at configure time (without any options implied by a
637 --with-cpu= configure option) uses such instructions.
639 * The res_hnok, res_dnok, res_mailok and res_ownok functions now check that
640 the specified string can be parsed as a domain name.
642 * In the malloc_info output, the <heap> element may contain another <aspace>
643 element, "subheaps", which contains the number of sub-heaps.
645 * The libresolv function p_secstodate is no longer supported for new
648 * The tilepro-*-linux-gnu configuration is no longer supported.
650 * The nonstandard header files <libio.h> and <_G_config.h> are deprecated
651 and will be removed in a future release. Software that is still using
652 either header should be updated to use standard <stdio.h> interfaces
655 libio.h was originally the header for a set of supported GNU extensions,
656 but they have not been maintained as such in many years, they are now
657 standing in the way of improvements to stdio, and we don't think there are
658 any remaining external users. _G_config.h was never intended for public
659 use, but predates the bits convention.
661 Changes to build and runtime requirements:
663 * bison version 2.7 or later is required to generate code in the 'intl'
666 Security related changes:
668 CVE-2009-5064: The ldd script would sometimes run the program under
669 examination directly, without preventing code execution through the
670 dynamic linker. (The glibc project disputes that this is a security
671 vulnerability; only trusted binaries must be examined using the ldd
674 CVE-2017-15670: The glob function, when invoked with GLOB_TILDE,
675 suffered from a one-byte overflow during ~ operator processing (either
676 on the stack or the heap, depending on the length of the user name).
677 Reported by Tim Rühsen.
679 CVE-2017-15671: The glob function, when invoked with GLOB_TILDE,
680 would sometimes fail to free memory allocated during ~ operator
681 processing, leading to a memory leak and, potentially, to a denial
684 CVE-2017-15804: The glob function, when invoked with GLOB_TILDE and
685 without GLOB_NOESCAPE, could write past the end of a buffer while
686 unescaping user names. Reported by Tim Rühsen.
688 CVE-2017-17426: The malloc function, when called with an object size near
689 the value SIZE_MAX, would return a pointer to a buffer which is too small,
690 instead of NULL. This was a regression introduced with the new malloc
691 thread cache in glibc 2.26. Reported by Iain Buclaw.
693 CVE-2017-1000408: Incorrect array size computation in _dl_init_paths leads
694 to the allocation of too much memory. (This is not a security bug per se,
695 it is mentioned here only because of the CVE assignment.) Reported by
698 CVE-2017-1000409: Buffer overflow in _dl_init_paths due to miscomputation
699 of the number of search path components. (This is not a security
700 vulnerability per se because no trust boundary is crossed if the fix for
701 CVE-2017-1000366 has been applied, but it is mentioned here only because
702 of the CVE assignment.) Reported by Qualys.
704 CVE-2017-16997: Incorrect handling of RPATH or RUNPATH containing $ORIGIN
705 for AT_SECURE or SUID binaries could be used to load libraries from the
708 CVE-2018-1000001: Buffer underflow in realpath function when getcwd function
709 succeeds without returning an absolute path due to unexpected behaviour
710 of the Linux kernel getcwd syscall. Reported by halfdog.
712 CVE-2018-6485: The posix_memalign and memalign functions, when called with
713 an object size near the value of SIZE_MAX, would return a pointer to a
714 buffer which is too small, instead of NULL. Reported by Jakub Wilk.
716 CVE-2018-6551: The malloc function, when called with an object size near
717 the value of SIZE_MAX, would return a pointer to a buffer which is too
718 small, instead of NULL.
720 The following bugs are resolved with this release:
722 [866] glob: glob should match dangling symlinks
723 [1062] glob: sysdeps/generic/glob.c merge from gnulib (part 3 of 3)
724 [2522] localedata: ca_ES@valencia: new Valencian (meridional Catalan)
726 [5997] math: Very slow execution of sinf function
727 [10580] localedata: hr_HR: updated locale
728 [10871] locale: 'mon' array should contain both nominative and genitive
730 [12349] localedata: eu_ES: incorrect thousands separator
731 [13605] localedata: shn_MM: new Shan locale
732 [13805] localedata: ru_RU: currency should use ',' as radix point
733 [13953] localedata: km_KH: locale update
734 [13994] localedata: mjw_IN: new locale
735 [14121] build: make writes .mo files in po directory
736 [14333] libc: Fix the race between atexit() and exit()
737 [14681] dynamic-link: _dl_get_origin leaks memory via executable link map.
738 [14925] localedata: bn_*: LC_IDENTIFICATION.language key should be
740 [15260] localedata: LC_MESSAGES.{yes,no}{str,expr}: various errors
741 [15261] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of full-
742 width Latin characters
743 [15332] localedata: es_CU: locale update
744 [15436] stdio: Don't close or flush stdio streams on abort
745 [15537] localedata: lv_LV: invalid collation for Latvian diacritical
747 [16148] localedata: ca_ES: incorrect thousands separator
748 [16750] dynamic-link: ldd should not try to execute the binaries
750 [16777] localedata: pl_PL: incorrect thousands separator in locale
751 [16905] localedata: hanzi: new collation
752 [17563] localedata: cmn_TW: add hanzi collation
753 [17750] localedata: wrong collation order of diacritics in most locales
754 [17804] libc: scandirat fails with ENOMEM because it checks for errno even
756 [17956] build: Build fails on missing definitions from header file
757 nss/nss.h when Mozilla NSS is used for cryptography
758 [18203] libc: realpath() does not handle unreachable paths correctly
759 [18572] dynamic-link: [arm] Lazy TLSDESC relocation has data race
760 [18812] localedata: kab_DZ: new Kabyle Algeria locale
761 [18822] libc: Internal functions are called via PLT
762 [18858] string: _HAVE_STRING_ARCH_xxx aren't defined for i386 nor x86_64
763 [19170] libc: __gmon_start__ defined in hppa in crtn.S
764 [19574] libc: glibc should support building static PIE binaries
765 [19852] localedata: charmaps/UTF-8: incorrect wcwidth for U+3099 and
767 [19971] glob: glob: Do not skip entries with zero d_ino values
768 [19982] localedata: fr.po: spelling mistake for error code EXDEV
769 [20008] localedata: km_KH: convert to translit_neutral
770 [20009] localedata: tr_TR: convert LC_CTYPE to i18n
771 [20142] math: [x86_64] Add SSE4.1 trunc, truncf
772 [20204] dynamic-link: _dl_open_hook and _dlfcn_hook hardening
773 [20482] localedata: de_CH: abbreviated weekdays should be two letters
774 [20498] localedata: miq_NI: new Mískitu / Miskito (miq) language locale
776 [20532] nss: getaddrinfo uses errno and h_errno without guaranteeing
777 they're set, wrong errors returned by gaih_inet when lookup functions
779 [20756] localedata: [PATCH] Use Unicode wise thousands separator
780 [20826] network: posix/tst-getaddrinfo5 fails on hosts without network
782 [20952] localedata: yuw_PG: new locale
783 [21084] localedata: charmaps/IBM858: new codepage
784 [21161] manual: [PATCH] fix typo in manual/arith.texi on strtoul prototype
785 [21242] libc: assert gives pedantic warning in old gcc versions
786 [21265] dynamic-link: _dl_runtime_resolve isn't compatible with Intel C++
787 __regcall calling convention
788 [21309] math: signed integer overflow in sysdeps/ieee754/dbl-64/e_pow.c
789 [21326] libc: C99 functions are not declared for C++11 and later if
790 _GNU_SOURCE is not predefined by g++
791 [21457] libc: sys/ucontext.h namespace
792 [21530] libc: tmpfile() should be implemented using O_TMPFILE
793 [21660] math: GCC fails to compile a formula with tgmath.h
794 [21672] nptl: sys-libs/glibc on ia64 crashes on thread exit: signal
795 SIGSEGV, Segmentation fault: pthread_create.c:432: __madvise
796 (pd->stackblock, freesize - PTHREAD_STACK_MIN, MADV_DONTNEED);
797 [21684] math: tgmath.h handling of complex integers
798 [21685] math: tgmath.h handling of bit-fields
799 [21686] math: tgmath.h handling of __int128
800 [21706] localedata: yesstr and nostr are missing for Breton [LC_MESSAGES]
802 [21745] libc: [powerpc64le] Extra PLT reference with --enable-stack-
804 [21750] localedata: column width of characters incompatible with classical
806 [21754] malloc: malloc: Perform as little work as possible after heap
807 consistency check failures
808 [21780] libc: hppa: p{read,write}v2 does not set ENOSUP on invalid flag
809 [21790] libc: Missing __memset_zero_constant_len_parameter in libc.so
810 [21791] string: Unused XXX_chk_XXX functions in libc.a
811 [21815] dynamic-link: FAIL: elf/tst-prelink-cmp with GCC is defaulted to
813 [21836] localedata: Removed redundant data (LC_MONETARY) in various Indian
815 [21845] localedata: Added new Locale bho_NP
816 [21853] localedata: Fix abday Which looks same as day in zh_SG
817 [21854] localedata: Added New Locale en_SC
818 [21864] libc: xmalloc.o is compiled with -DMODULE_NAME=libc
819 [21871] dynamic-link: _dl_runtime_resolve_avx_opt is slower than
820 _dl_runtime_resolve_avx_slow
821 [21885] network: getaddrinfo: gethosts does not release resolver context
822 on memory allocation failure
823 [21899] libc: XPG4.2 sigaction namespace
824 [21908] dynamic-link: dynamic linker broke on ia64 (mmap2 consolidation is
826 [21913] libc: static binaries SIGSEGV in __brk when host's gcc is pie-by-
828 [21915] nss: nss_files can return with NSS_STATUS_SUCCESS and a clobbered
829 errno value, causing getaddrinfo to fail
830 [21920] localedata: Fix p_cs_precedes/n_cs_precedes for mt_MT
831 [21922] network: getaddrinfo with AF_INET/AF_INET6 returns EAI_NONAME
832 instead of EAI_NODATA
833 [21928] libc: sys/ptrace.h: remove obsolete temporary development Linux
834 constant PTRACE_SEIZE_DEVEL
835 [21930] math: C-only gcc builtins used in <math.h> isinf
836 [21932] network: Unpaired __resolv_context_get in generic get*_r
838 [21941] math: powerpc: Wrong register constraint for xssqrtqp in sqrtf128
839 [21944] libc: sigval namespace
840 [21951] localedata: Update hanzi collation by stroke
841 [21955] math: Wrong alignment of L(SP_RANGE)/L(SP_INF_0) in
842 sysdeps/x86_64/fpu/e_expf.S
843 [21956] libc: Stack allocation in MIPS syscall impl (ubounded stack
844 allocation in syscall loops)
845 [21959] localedata: Fix Country name for xh_ZA
846 [21960] localedata: Fix abmon for bem_ZM
847 [21966] math: AVX2 mathvec functions use FMA without checking
848 [21967] math: When 512-bit AVX2 wrapper functions in mathvec are used?
849 [21971] localedata: Added New Locale for mfe_MU
850 [21972] libc: assert macro requires operator== (int) for its argument type
851 [21973] math: [sparc] libm missing sqrtl compat symbol
852 [21974] libc: Remove __bb_init_func and __bb_exit_func
853 [21982] string: stratcliff.c: error: assuming signed overflow does not
855 [21986] stdio: __guess_grouping is called incorrectly
856 [21987] math: [sparc32] wrong bits/long-double.h installed
857 [22019] localedata: Wrong placement of monetary symbol in el_GR (negative
859 [22022] localedata: Missing country_name for mni_IN
860 [22023] localedata: Removed redundant data (LC_TIME and LC_MESSAGES) for
862 [22025] locale: iconv: Inconsistency between pointer mangling and NULL
864 [22026] locale: iconv_open: heap overflow on gconv_init failure
865 [22028] math: bits/math-finite.h _MSUF_ expansion namespace
866 [22035] math: [m68k] bits/math-inline.h macro namespace
867 [22038] localedata: Fix abbreviated weeks and months for Somali
868 [22044] localedata: Remove redundant data for Limburgish Language
869 [22050] malloc: Linking with -lmcheck does not hook
870 __malloc_initialize_hook correctly
871 [22051] libc: zero terminator in the middle of glibc's .eh_frame
872 [22052] malloc: malloc failed to compile with GCC 7 and -O3
873 [22070] localedata: charmaps/UTF-8: wcwidth for
874 Prepended_Concatenation_Mark codepoints set to 0 (should be 1)
875 [22074] localedata: charmaps/UTF-8: wcwidth for U+1160-U+11FF (Hangul
876 Jungseong and Jongseong) should be 0
877 [22078] nss: nss_files performance issue in multi mode
878 [22082] math: bits/math-finite.h exp10 condition
879 [22086] libc: pcprofiledump incorrect cross-endian condition
880 [22093] dynamic-link: ld.so no longer searches in .../x86_64
881 [22095] network: Name server address allocation memory leak in resolv.conf
883 [22096] network: __resolv_conf_attach can incorrectly free passed conf
885 [22100] localedata: om_KE: LC_TIME: copy redundant data from om_ET
886 [22101] dynamic-link: Dynamic loader must ignore "debug" shared objects
888 [22111] malloc: malloc: per thread cache is not returned when thread exits
889 [22112] localedata: Fix LC_TELEPHONE/LC_NAME for az_AZ
890 [22134] libc: [linux] implement fexecve with execveat
891 [22142] libc: [powerpc] printf oupts a wrong value of DBL_MAX on ppc64 and
893 [22145] libc: ttyname() gives up too early in the face of namespaces
894 [22146] math: C++ build issue with float128 on x86_64
895 [22153] nptl: nptl: save error code before process termination
896 [22156] libc: [hppa,ia64,microblaze] Executable stack default
897 [22159] malloc: malloc: MALLOC_CHECK_ broken with --enable-tunables=no
898 [22161] nscd: nscd cache prune for netgroups hangs after timeout bump
899 [22165] libc: [hppa] Text relocations in libc.so
900 [22180] libc: destructor registered via __cxa_atexit is called twice
901 [22183] glob: commit 5554304f0ddd ("posix: Allow glob to match dangling
902 symlinks") cause "make" segfaults
903 [22189] math: [powerpc] math_private.h definitions of math_opt_barrier and
905 [22207] libc: FAIL: stdlib/test-atexit-race
906 [22225] math: nearbyint arithmetic moved before feholdexcept
907 [22229] math: [sparc32] missing copysignl, fabsl, fmal compat symbols
908 [22235] math: iscanonical in C++ and float128
909 [22243] math: log2(0) and log10(0) are wrong in downward rounding without
910 the svid compat wrapper
911 [22244] math: ynf and yn are wrong without the svid compat wrapper
912 [22273] libc: Improper assert in Linux posix_spawn implementation
913 [22284] libc: -pg -pie doesn't work
914 [22292] locale: localedef exits with error 4 when it should be error 1
915 [22294] locale: Allow "" for int_currency_symbol definition in locales.
916 [22295] locale: Don't warn on non-symbolic characters in locale sources in
918 [22296] math: glibc 2.26: signbit build issue with Gcc 5.5.0 on x86_64
919 [22298] nptl: x32: lockups on recursive pthread_mutex_lock after upgrade
921 [22299] dynamic-link: Problem with $PLATFORM on x86_64 platform
922 [22320] glob: Buffer overflow in glob with GLOB_TILDE (CVE-2017-15670)
923 [22321] libc: sysconf(_SC_IOV_MAX) returns -1 on Linux
924 [22322] libc: [mips64] wrong bits/long-double.h installed
925 [22325] glob: Memory leak in glob with GLOB_TILDE (CVE-2017-15671)
926 [22332] glob: Buffer overflow in glob with GLOB_TILDE in unescaping
928 [22336] localedata: cs_CZ LC_COLLATE does not use i18n
929 [22343] malloc: Integer overflow in posix_memalign
930 [22347] libc: getrandom() returns the number of bytes that were copied to
931 the buffer even though the comments say "Return 0 on success and -1 on
933 [22353] string: sysdeps/i386/i586/strcpy.S isn't maintainable
934 [22362] libc: Installed crt1.o, crti,.o and crtn.o files are used with
936 [22370] dynamic-link: Incorrect note padding check
937 [22375] libc: malloc returns pointer from tcache_get when should return
938 NULL (CVE-2017-17426)
939 [22377] math: iseqsig, float128 and C++
940 [22382] localedata: Error in tpi_PG locale
941 [22387] localedata: Replace unicode sequences <Uxxxx> for characters
942 inside the ASCII printable range
943 [22402] math: [powerpc64le] __MATH_TG does not support _Float128 for
945 [22403] localedata: Slash needs escaping in some locales
946 [22408] malloc: malloc_info access heaps without arena lock, ignores heaps
947 [22409] network: res_hnok does not accept some host names used on the
949 [22412] network: res_dnok, res_hnok should perform syntax checks
950 [22413] network: ns_name_pton ignores syntactically invalid trailing
952 [22415] stdio: setvbuf can lead to invalid free/segfault
953 [22432] build: Non-deterministic build
954 [22439] malloc: malloc_info should compute summary statistics for all sub-
956 [22442] network: if_nametoindex could report index for the wrong
958 [22446] build: aliasing violation calling readlink in handle_request
959 [22447] build: unsafe call to strlen with a non-string in getlogin_r.c
960 [22457] libc: Generic preadv/pwritev incorrectly calls __posix_memalign
961 [22459] libc: FAIL: elf/check-localplt with __stack_chk_fail related to
962 __nscd_hash/__nss_hash
963 [22463] network: p_secstodate overflow handling
964 [22469] localedata: pl_PL LC_COLLATE does not use i18n
965 [22478] libc: sigwait can fail with EINTR
966 [22505] libc: ldconfig processes include directive in locale-specific
968 [22515] localedata: hsb_DE LC_COLLATE does not use copy "iso14651_t1"
969 [22517] localedata: et_EE LC_COLLATE does not use copy "iso14651_t1"
970 [22519] localedata: is_IS LC_COLLATE does not use copy "iso14651_t1"
971 [22524] localedata: lt_LT LC_COLLATE does not use copy "iso14651_t1"
972 [22527] localedata: tr_TR LC_COLLATE does not use copy "iso14651_t1"
973 [22534] localedata: Collation rules for Serbian and Bosnian should be the
975 [22561] math: [DR#471] cacosh (0 + iNaN) should return NaN +/- i pi/2
976 [22568] math: [DR#471] ctanh (0 + iNaN), ctanh (0 + i Inf)
977 [22577] libc: missing newline after "cannot allocate TLS data structures
979 [22588] manual: manual/conf.texi: missing underscore in front of
981 [22593] math: nextafter and nexttoward are declared with const attribute
982 [22596] manual: manual: finite(nan) wrongly described as returning nonzero
983 [22603] string: ia64 memchr overflows internal pointer check
984 [22605] libc: SH clone does not set the exit code correctly
985 [22606] dynamic-link: Incorrect array size computation in _dl_init_paths
987 [22607] dynamic-link: Buffer Overflow in _dl_init_paths (CVE-2017-1000409)
988 [22611] malloc: malloc/tst-realloc wrongly assumes that errno must not be
989 modified in case of success
990 [22614] build: gcc: error: unrecognized command line option ‘-no-pie’
991 [22615] manual: manual: ambiguous wording about errno value in case of
993 [22624] libc: MIPS setjmp() saves incorrect 'o0' register in --enable-
995 [22625] dynamic-link: RPATH $ORIGIN replaced by PWD for AT_SECURE/SUID
996 binaries or if /proc is not mounted (CVE-2017-16997)
997 [22627] dynamic-link: $ORIGIN in $LD_LIBRARY_PATH is substituted twice
998 [22630] build: $(no-pie-ldflag) is no longer effective
999 [22631] math: [m68k] Bad const attributes in bits/mathinline.h
1000 [22635] nptl: pthread_self returns NULL before libpthread is loaded
1001 [22636] nptl: PTHREAD_STACK_MIN is too small on x86-64
1002 [22637] nptl: guard size is subtracted from thread stack size instead of
1004 [22648] libc: getrlimit/setrlimit with RLIM_INFINITY broken on alpha
1005 [22657] localedata: hu_HU: Avoid double space in date
1006 [22660] math: fmax, fmin sNaN handling on alpha
1007 [22664] libc: New warning of GCC8
1008 [22665] math: alpha: ceil and floor raise inexact exceptions
1009 [22666] math: alpha: trunc raise inexact exceptions
1010 [22667] libc: makecontext lacks stack alignment on i386
1011 [22678] libc: prlimit fails for RLIM_INFINITY values on 32-bit machines
1012 [22679] libc: getcwd(3) can succeed without returning an absolute path
1014 [22685] libc: PowerPC: Static AT_SECURE binaries segfault with lock-
1015 elision and tunables
1016 [22687] math: [powerpc-nofpu] complex long double functions spurious
1018 [22688] math: [powerpc-nofpu] remainderl wrong sign of zero result
1019 [22690] math: [ldbl-128ibm] lrintl, lroundl missing "invalid" exceptions
1020 [22691] math: [powerpc-nofpu] fmaxmagl, fminmagl spurious "invalid"
1022 [22693] math: [ldbl-128ibm] log1pl (-qNaN) spurious "invalid" exception
1023 [22697] math: [powerpc] llround spurious "inexact" exceptions on 32-bit
1025 [22701] nis: Incomplete removal of libnsl
1026 [22702] math: [powerpc-nofpu] nearbyintl traps with trapping "inexact"
1027 [22707] libc: Missing defines in elf.h for DF_1_STUB and DF_1_PIE.
1028 [22715] dynamic-link: FAIL: elf/tst-audit10
1029 [22719] libc: Backtrace tests fail on hppa
1030 [22742] libc: [aarch64] mcontext_t __reserved field got renamed
1031 [22743] nptl: __pthread_register_cancel corrupts stack after f81ddabffd
1032 [22765] crypt: (struct crypt_data *data)->initialized is not set to zero
1033 before the first call to crypt_r () in crypt/badsalttest.c
1040 * A per-thread cache has been added to malloc. Access to the cache requires
1041 no locks and therefore significantly accelerates the fast path to allocate
1042 and free small amounts of memory. Refilling an empty cache requires locking
1043 the underlying arena. Performance measurements show significant gains in a
1044 wide variety of user workloads. Workloads were captured using a special
1045 instrumented malloc and analyzed with a malloc simulator. Contributed by
1046 DJ Delorie with the help of Florian Weimer, and Carlos O'Donell.
1048 * Unicode 10.0.0 Support: Character encoding, character type info, and
1049 transliteration tables are all updated to Unicode 10.0.0, using
1050 generator scripts contributed by Mike FABIAN (Red Hat).
1051 These updates cause user visible changes, especially the changes in
1052 wcwidth for many emoji characters cause problems when emoji sequences
1053 are rendered with pango, see for example:
1054 https://bugzilla.gnome.org/show_bug.cgi?id=780669#c5
1056 * Collation of Hungarian has been overhauled and is now consistent with "The
1057 Rules of Hungarian Orthography, 12th edition" (Bug 18934). Contributed by
1060 * Improvements to the DNS stub resolver, contributed by Florian Weimer:
1062 - The GNU C Library will now detect when /etc/resolv.conf has been
1063 modified and reload the changed configuration. The new resolver option
1064 “no-reload” (RES_NORELOAD) disables this behavior.
1066 - The GNU C Library now supports an arbitrary number of search domains
1067 (configured using the “search” directive in /etc/resolv.conf);
1068 previously, there was a hard limit of six domains. For backward
1069 compatibility, applications that directly modify the ‘_res’ global
1070 object are still limited to six search domains.
1072 - When the “rotate” (RES_ROTATE) resolver option is active, the GNU C
1073 Library will now randomly pick a name server from the configuration as a
1074 starting point. (Previously, the second name server was always used.)
1076 * The tunables feature is now enabled by default. This allows users to tweak
1077 behavior of the GNU C Library using the GLIBC_TUNABLES environment variable.
1079 * New function reallocarray, which resizes an allocated block (like realloc)
1080 to the product of two sizes, with a guaranteed clean failure upon integer
1081 overflow in the multiplication. Originally from OpenBSD, contributed by
1082 Dennis Wölfing and Rüdiger Sonderfeld.
1084 * New wrappers for the Linux-specific system calls preadv2 and pwritev2.
1085 These are extended versions of preadv and pwritev, respectively, taking an
1086 additional flags argument. The set of supported flags depends on the
1087 running kernel; full support currently requires kernel 4.7 or later.
1089 * posix_spawnattr_setflags now supports the flag POSIX_SPAWN_SETSID, to
1090 create a new session ID for the spawned process. This feature is
1091 scheduled to be added to the next major revision of POSIX; for the time
1092 being, it is available under _GNU_SOURCE.
1094 * errno.h is now safe to use from C-preprocessed assembly language on all
1095 supported operating systems. In this context, it will only define the
1096 Exxxx constants, as preprocessor macros expanding to integer literals.
1098 * On ia64, powerpc64le, x86-32, and x86-64, the math library now implements
1099 128-bit floating point as defined by ISO/IEC/IEEE 60559:2011 (IEEE
1100 754-2008) and ISO/IEC TS 18661-3:2015. Contributed by Paul E. Murphy,
1101 Gabriel F. T. Gomes, Tulio Magno Quites Machado Filho, and Joseph Myers.
1103 To compile programs that use this feature, the compiler must support
1104 128-bit floating point with the type name _Float128 (as defined by TS
1105 18661-3) or __float128 (the nonstandard name used by GCC for C++, and for
1106 C prior to version 7). _GNU_SOURCE or __STDC_WANT_IEC_60559_TYPES_EXT__
1107 must be defined to make the new interfaces visible.
1109 The new functions and macros correspond to those present for other
1110 floating-point types (except for a few obsolescent interfaces not
1111 supported for the new type), with F128 or f128 suffixes; for example,
1112 strtof128, HUGE_VAL_F128 and cosf128. Following TS 18661-3, there are no
1113 printf or scanf formats for the new type; the strfromf128 and strtof128
1114 interfaces should be used instead.
1116 Deprecated and removed features, and other changes affecting compatibility:
1118 * The synchronization that pthread_spin_unlock performs has been changed to
1119 now be equivalent to a C11 atomic store with release memory order to the
1120 spin lock's memory location. Previously, several (but not all)
1121 architectures used stronger synchronization (e.g., containing what is
1122 often called a full barrier). This change can improve performance, but
1123 may affect odd fringe uses of spin locks that depend on the previous
1124 behavior (e.g., using spin locks as atomic variables to try to implement
1125 Dekker's mutual exclusion algorithm).
1127 * The port to Native Client running on ARMv7-A (--host=arm-nacl) has been
1130 * Sun RPC is deprecated. The rpcgen program, librpcsvc, and Sun RPC headers
1131 will only be built and installed when the GNU C Library is configured with
1132 --enable-obsolete-rpc. This allows alternative RPC implementations, such
1133 as TIRPC or rpcsvc-proto, to be used.
1135 * The NIS(+) name service modules, libnss_nis, libnss_nisplus, and
1136 libnss_compat, are deprecated, and will not be built or installed by
1139 The NIS(+) support library, libnsl, is also deprecated. By default, a
1140 compatibility shared library will be built and installed, but not headers
1141 or development libraries. Only a few NIS-related programs require this
1142 library. (In particular, the GNU C Library has never required programs
1143 that use 'gethostbyname' to be linked with libnsl.)
1145 Replacement implementations based on TIRPC, which additionally support
1146 IPv6, are available from <https://github.com/thkukuk/>. The configure
1147 option --enable-obsolete-nsl will cause libnsl's headers, and the NIS(+)
1148 name service modules, to be built and installed.
1150 * The DNS stub resolver no longer performs EDNS fallback. If EDNS or DNSSEC
1151 support is enabled, the configured recursive resolver must support EDNS.
1152 (Responding to EDNS-enabled queries with responses which are not
1153 EDNS-enabled is fine, but FORMERR responses are not.)
1155 * res_mkquery and res_nmkquery no longer support the IQUERY opcode. DNS
1156 servers have not supported this opcode for a long time.
1158 * The _res_opcodes variable has been removed from libresolv. It had been
1159 exported by accident.
1161 * <string.h> no longer includes inline versions of any string functions,
1162 as this kind of optimization is better done by the compiler. The macros
1163 __USE_STRING_INLINES and __NO_STRING_INLINES no longer have any effect.
1165 * The nonstandard header <xlocale.h> has been removed. Most programs should
1166 use <locale.h> instead. If you have a specific need for the definition of
1167 locale_t with no other declarations, please contact
1168 libc-alpha@sourceware.org and explain.
1170 * The obsolete header <sys/ultrasound.h> has been removed.
1172 * The obsolete signal constant SIGUNUSED is no longer defined by <signal.h>.
1174 * The obsolete function cfree has been removed. Applications should use
1177 * The stack_t type no longer has the name struct sigaltstack. This changes
1178 the C++ name mangling for interfaces involving this type.
1180 * The ucontext_t type no longer has the name struct ucontext. This changes
1181 the C++ name mangling for interfaces involving this type.
1183 * On M68k GNU/Linux and MIPS GNU/Linux, the fpregset_t type no longer has
1184 the name struct fpregset. On Nios II GNU/Linux, the mcontext_t type no
1185 longer has the name struct mcontext. On SPARC GNU/Linux, the struct
1186 mc_fq, struct rwindow, struct fpq and struct fq types are no longer
1187 defined in sys/ucontext.h, the mc_fpu_t type no longer has the name struct
1188 mc_fpu, the gwindows_t type no longer has the name struct gwindows and the
1189 fpregset_t type no longer has the name struct fpu. This changes the C++
1190 name mangling for interfaces involving those types.
1192 * On S/390 GNU/Linux, the constants defined by <sys/ptrace.h> have been
1193 synced with the kernel:
1195 - PTRACE_GETREGS, PTRACE_SETREGS, PTRACE_GETFPREGS and PTRACE_SETFPREGS
1196 are not supported on this architecture and have been removed.
1198 - PTRACE_SINGLEBLOCK, PTRACE_SECCOMP_GET_FILTER, PTRACE_PEEKUSR_AREA,
1199 PTRACE_POKEUSR_AREA, PTRACE_GET_LAST_BREAK, PTRACE_ENABLE_TE,
1200 PTRACE_DISABLE_TE and PTRACE_TE_ABORT_RAND have been added.
1202 Programs that assume the GET/SETREGS ptrace requests are universally
1203 available will now fail to build, instead of malfunctioning at runtime.
1205 Changes to build and runtime requirements:
1207 * Linux kernel 3.2 or later is required at runtime, on all architectures
1208 supported by that kernel. (This is a change from version 2.25 only for
1211 * GNU Binutils 2.25 or later is now required to build the GNU C Library.
1213 * On most architectures, GCC 4.9 or later is required to build the GNU C
1214 Library. On powerpc64le, GCC 6.2 or later is required.
1216 Older GCC versions and non-GNU compilers are still supported when
1217 compiling programs that use the GNU C Library. (We do not know exactly
1218 how old, and some GNU extensions to C may be _de facto_ required. If you
1219 are interested in helping us make this statement less vague, please
1220 contact libc-alpha@sourceware.org.)
1222 Security related changes:
1224 * The DNS stub resolver limits the advertised UDP buffer size to 1200 bytes,
1225 to avoid fragmentation-based spoofing attacks (CVE-2017-12132).
1227 * LD_LIBRARY_PATH is now ignored in binaries running in privileged AT_SECURE
1228 mode to guard against local privilege escalation attacks (CVE-2017-1000366).
1230 * Avoid printing a backtrace from the __stack_chk_fail function since it is
1231 called on a corrupt stack and a backtrace is unreliable on a corrupt stack
1234 * A use-after-free vulnerability in clntudp_call in the Sun RPC system has been
1235 fixed (CVE-2017-12133).
1237 The following bugs are resolved with this release:
1239 [984] network: Respond to changed resolv.conf in gethostbyname
1240 [5010] network: sunrpc service cleanup causes unwanted port mapper traffic
1241 [12068] localedata: sc_IT: misspelled yesexpr/day/abday/mon/abmon/date_fmt
1243 [12189] libc: __stack_chk_fail should not attempt a backtrace
1245 [14096] time: Race condition on timezone/tst-timezone.out
1246 [14172] localedata: az_IR: new locale
1247 [14995] build: glibc fails to build if gold is the default linker, even if
1249 [15998] build: [powerpc] Set arch_minimum_kernel for powerpc LE
1250 [16637] network: inet_pton function is accepting IPv6 with bad format
1251 [16640] string: string/strtok.c: undefined behaviour inconsistent between
1252 x86 and other generic code
1253 [16875] localedata: ko_KR: fix lang_name
1254 [17225] localedata: ar_SY: localized month names for May and June are
1256 [17297] localedata: da_DK: wrong date_fmt string
1257 [18907] stdio: Incorrect order of __wur __THROW in <printf.h>
1258 [18934] localedata: hu_HU: collate: fix multiple bugs and add tests
1259 [18988] nptl: pthread wastes memory with mlockall(MCL_FUTURE)
1260 [19066] localedata: ar_SA abbreviated day and month names are in English
1261 [19569] network: resolv: Support an arbitrary number of search domains
1262 [19570] network: Implement random DNS server selection in the stub
1264 [19838] locale: localedef fails on PA-RISC
1265 [19919] localedata: iso14651_t1_common: Correct the Malayalam sorting
1266 order of 0D36 and 0D37
1267 [19922] localedata: iso14651_t1_common: Define collation for Malayalam
1269 [20098] libc: FAIL: debug/backtrace-tst on hppa
1270 [20257] network: sunrpc: clntudp_call does not enforce timeout when
1272 [20275] localedata: locale day/abday/mon/abmon should not have trailing
1274 [20313] localedata: Update locale data to Unicode 9.0
1275 [20424] manual: Document how to provide a malloc replacement
1276 [20496] localedata: agr_PE: new language locale Awajún / Aguaruna (agr)
1278 [20686] locale: Add el_GR@euro to SUPPORTED.
1279 [20831] dynamic-link: _dl_map_segments does not test for __mprotect
1280 failures consistently
1281 [21015] dynamic-link: Document and fix --enable-bind-now
1282 [21016] nptl: pthread_cond support is broken on hppa
1283 [21029] libc: glibc-2.23 (and later) fails to compile with -fno-omit-
1284 frame-pointer on i386
1285 [21049] libc: segfault in longjmp_chk() due to clobbered processor
1287 [21075] libc: unused assigment to %g4 in sparc/sparc{64,32}/clone.S
1288 [21088] libc: Build fails with --enable-static-nss
1289 [21094] math: cosf(1.57079697) has 3 ulp error on targets where the
1290 generic c code is used
1291 [21109] libc: Tunables broken on big-endian
1292 [21112] math: powf has large ulp errors with base close to 1 and exponent
1294 [21115] network: sunrpc: Use-after-free in error path in clntudp_call
1296 [21120] malloc: glibc malloc is incompatible with GCC 7
1297 [21130] math: Incorrect return from y0l (-inf) and y1l (-inf) when linking
1299 [21134] math: Exception (divide by zero) not set for y0/y1 (0.0) and y0/y1
1300 (-0.0) when linking with -lieee
1301 [21171] math: log10, log2 and lgamma return incorrect results
1302 [21179] libc: handle R_SPARC_DISP64 and R_SPARC_REGISTER relocs
1303 [21182] libc: __memchr_sse2: regression in glibc-2.25 on i686
1304 [21207] localedata: ce_RU: update weekdays from CLDR
1305 [21209] dynamic-link: LD_HWCAP_MASK read in setuid binaries
1306 [21217] localedata: Update months from CLDR-31
1307 [21232] libc: miss posix_fadvise64 on MIPS64 when static linking
1308 [21243] libc: support_delete_temp_file should issue warning for failed
1310 [21244] libc: support resolv_test_start() socket fd close should be
1312 [21253] libc: localedef randomly segfaults when using -fstack-check due to
1313 new posix_spawn implementation
1314 [21258] dynamic-link: Branch predication in _dl_runtime_resolve_avx512_opt
1315 leads to lower CPU frequency
1316 [21259] libc: [alpha] termios.h missing IXANY for POSIX
1317 [21261] libc: [sparc64] bits/setjmp.h namespace
1318 [21267] network: [mips] bits/socket.h IOC* namespace
1319 [21268] libc: [alpha] termios.h NL2, NL3 namespace
1320 [21270] libc: mmap64 silently truncates large offset values
1321 [21275] libc: posix_spawn always crashes on ia64 now
1322 [21277] libc: [alpha] termios.h missing IUCLC for UNIX98 and older
1323 [21280] math: [powerpc] logbl for POWER7 return incorrect results
1324 [21289] libc: Incorrect declaration for 32-bit platforms with
1325 _FILE_OFFSET_BITS=64 causes build error
1326 [21295] network: GETAI(AF_UNSPEC) drops IPv6 addresses if nss module does
1327 not support gethostbyname4_r
1328 [21298] nptl: rwlock can deadlock on frequent reader/writer phase
1330 [21338] malloc: mallopt M_ARENA_MAX doesn't set the maximum number of
1332 [21340] libc: Support POSIX_SPAWN_SETSID
1333 [21357] libc: unwind-dw2-fde deadlock when using AddressSanitizer
1334 [21359] network: ns_name_pack needs additional byte in destination buffer
1335 [21361] network: resolv: Reduce advertised EDNS0 buffer size to guard
1336 against fragmentation attacks (CVE-2017-12132)
1337 [21369] network: resolv: Remove EDNS fallback
1338 [21371] libc: Missing timespec definition when compiled with _XOPEN_SOURCE
1340 [21386] nptl: Assertion in fork for distinct parent PID is incorrect
1341 [21391] dynamic-link: x86: Set dl_platform and dl_hwcap from CPU features
1342 [21393] stdio: Missing dup3 error check in freopen, freopen64
1343 [21396] libc: Use AVX2 memcpy/memset on Skylake server
1344 [21399] localedata: Bad description for U00EC in
1345 localedata/charmaps/CP1254
1346 [21411] malloc: realloc documentation error
1347 [21426] network: sys/socket.h uio.h namespace
1348 [21428] libc: [aarch64] tst-backtrace5 testsuite failure
1349 [21445] libc: signal.h bsd_signal namespace
1350 [21455] network: Network headers stdint.h namespace
1351 [21474] network: resolv: res_init does not use RES_DFLRETRY (2) but 4 for
1353 [21475] network: resolv: Overlong search path is truncated mid-label
1354 [21511] libc: sigstack namespace
1355 [21512] libc: clone() ends up calling exit_group() through _exit() wrapper
1356 [21514] libc: sysdeps/unix/sysv/linux/sys/syscall.h:31:27: fatal error:
1357 bits/syscall.h: No such file or directory
1358 [21517] libc: struct sigaltstack namespace
1359 [21528] dynamic-link: Duplicated minimal strtoul implementations in ld.so
1360 [21533] localedata: Update locale data to Unicode 10.0
1362 ../sysdeps/unix/sysv/linux/s390/s390-32/__makecontext_ret.S:44: Error:
1363 junk at end of line, first unrecognized character is `@'
1364 [21538] libc: SIG_HOLD missing for XPG4
1365 [21539] libc: S390: Mismatch between kernel and glibc ptrace.h with
1366 request 12: PTRACE_SINGLEBLOCK vs PTRACE_GETREGS.
1367 [21542] libc: Use conservative default for sysconf (_SC_NPROCESSORS_ONLN)
1368 [21543] libc: sigevent namespace
1369 [21548] libc: [mips] get/set/make/swap context for MIPS O32 assume wrong
1370 size for general purpose registers in mcontext_t structure
1371 [21550] libc: sigwait namespace
1372 [21552] libc: XPG4 bsd_signal namespace
1373 [21554] libc: sigpause namespace
1374 [21560] libc: sys/wait.h signal.h namespace
1375 [21561] libc: waitid namespace
1376 [21573] nptl: GCC 7: /usr/bin/install: cannot remove
1377 '/usr/include/stdlib.h': Permission denied
1378 [21575] libc: sys/wait.h missing struct rusage definition
1379 [21584] libc: sigaltstack etc namespace
1380 [21597] libc: siginterrupt namespace
1381 [21607] math: hppa: FAIL: math/test-tgmath
1382 [21609] dynamic-link: Incomplete workaround for GCC __tls_get_addr ABI
1384 [21622] libc: [tile] missing SA_* for POSIX.1:2008
1385 [21624] dynamic-link: ld.so: Unsafe alloca allows local attackers to alias
1386 stack and heap (CVE-2017-1000366)
1387 [21625] libc: wait3 namespace
1388 [21654] nss: Incorrect pointer alignment in NSS group merge result
1390 [21657] network: Parse interface zone id for node-local multicast
1391 [21662] string: memcmp-avx2-movbe.S lacks saturating subtraction for
1393 [21666] libc: .symver is used on common symbol
1394 [21668] network: resolv: res_init cross-thread broadcast introduces race
1396 [21687] math: tgmath.h totalorder, totalordermag return type
1397 [21694] locale: Current Glibc Locale Does Not Support Tok-Pisin and Fiji
1399 [21696] libc: Incorrect assumption of of __cpu_mask in
1400 posix/sched_cpucount.c
1401 [21697] libc: sysdeps/posix/spawni.c: 2 * suspicious condition ?
1402 [21706] localedata: yesstr and nostr are missing for Breton [LC_MESSAGES]
1404 [21707] math: ppc64le: Invalid IFUNC resolver from libgcc calls getauxval,
1405 leading to relocation crash
1406 [21709] libc: resolv_conf.c:552: update_from_conf: Assertion
1407 `resolv_conf_matches (resp, conf)' failed.
1408 [21710] localedata: Added Samoan language locale for Samoa
1409 [21711] localedata: Pashto yesstr/nostr locale are missing
1410 [21715] nptl: sysdeps/nptl/bits/pthreadtypes.h: typedef guard
1411 __have_pthread_attr_t can cause redefinition of typedef ‘pthread_attr_t’
1412 [21721] localedata: Incorrect Full Weekday names for ks_IN@devanagari
1413 [21723] localedata: yesstr/nostr missing for Chinese language locale
1414 [21724] localedata: yesstr and nostr are missing for Xhosa [LC_MESSAGES]
1416 [21727] localedata: yesstr and nostr are missing for Tsonga [LC_MESSAGES]
1418 [21728] localedata: New Locale for Tongan language
1419 [21729] localedata: incorrect LC_NAME fields for hi_IN
1420 [21733] localedata: yesstr and nostr are missing for zh_HK
1421 [21734] localedata: Missing yesstr and nostr are for kw_GB
1422 [21738] libc: misc/tst-preadvwritev2 and misc/tst-preadvwritev64v2 fail
1423 [21741] libc: Undefined __memmove_chk_XXX and __memset_chk_XXX in libc.a
1424 [21742] libc: _dl_num_cache_relocations is undefined in libc.a
1425 [21743] localedata: ks_IN@devanagari: abday strings mismatch the day
1427 [21744] libc: Tests failing on --enable-tunables --enable-stack-
1429 [21749] localedata: Wrong abbreviated day name (“abday”) for
1431 [21756] localedata: missing yesstr, nostr for nds_DE and nds_NL
1432 [21757] localedata: missing yesstr, nostr for pap_AW and pap_CW
1433 [21759] localedata: missing yesstr and nostr for Tigrinya
1434 [21760] localedata: Fix LC_MESSAGES and LC_ADDRESS for anp_IN
1435 [21766] localedata: Wrong LC_MESSAGES for om_ET Locale
1436 [21767] localedata: Missing Bislama locales
1437 [21768] localedata: Missing yesstr and nostr for aa_ET
1438 [21770] localedata: Missing Field in li_NL
1439 [21778] nptl: Robust mutex may deadlock
1440 [21779] libc: MicroBlaze segfaults when loading libpthread
1441 [21783] localedata: Fix int_select international_call_prefixes
1442 [21784] localedata: Inconsistency in country_isbn
1443 [21788] localedata: Missing Country Postal Abbreviations
1444 [21794] localedata: Added-country_isbn-for-Italy
1445 [21795] localedata: Add/Fix country_isbn for France
1446 [21796] localedata: Added country_isbn for Republic of Korea
1447 [21797] localedata: Fix inconsistency in country_isbn and missing prefixes
1448 [21799] localedata: Added int_select international_call_prefixes
1449 [21801] localedata: Added int_select international_call_prefixes
1450 [21804] nptl: Double semicolon in thread-shared-types.h
1451 [21807] localedata: LC_ADDRESS fix for pap_CW
1452 [21808] localedata: Fix LC_ADDRESS for pap_AW
1453 [21821] localedata: Added country_name in mai_IN
1454 [21822] localedata: Fix LC_TIME for mai_IN
1455 [21823] localedata: missing yesstr, nostr for sa_IN
1456 [21825] localedata: Fix name_mrs for mag_IN
1457 [21828] localedata: 2.26 changelog should mention user visible changes
1459 [21835] localedata: Added Maithili language locale for Nepal
1460 [21838] localedata: Removed redundant data for the_NP
1461 [21839] localedata: Fix LC_MONETARY for ta_LK
1462 [21844] localedata: Fix Latin characters and Months Sequence.
1463 [21848] localedata: Fix mai_NP Title Name
1468 * The feature test macro __STDC_WANT_LIB_EXT2__, from ISO/IEC TR
1469 24731-2:2010, is supported to enable declarations of functions from that
1470 TR. Note that not all functions from that TR are supported by the GNU C
1473 * The feature test macro __STDC_WANT_IEC_60559_BFP_EXT__, from ISO/IEC TS
1474 18661-1:2014, is supported to enable declarations of functions and macros
1475 from that TS. Note that not all features from that TS are supported by
1478 * The feature test macro __STDC_WANT_IEC_60559_FUNCS_EXT__, from ISO/IEC TS
1479 18661-4:2015, is supported to enable declarations of functions and macros
1480 from that TS. Note that most features from that TS are not supported by
1483 * The nonstandard feature selection macros _REENTRANT and _THREAD_SAFE are
1484 now treated as compatibility synonyms for _POSIX_C_SOURCE=199506L.
1485 Since the GNU C Library defaults to a much newer revision of POSIX, this
1486 will only affect programs that specifically request an old conformance
1487 mode. For instance, a program compiled with -std=c89 -D_REENTRANT will
1488 see a change in the visible declarations, but a program compiled with
1489 just -D_REENTRANT, or -std=c99 -D_POSIX_C_SOURCE=200809L -D_REENTRANT,
1492 Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
1493 defined by all multithreaded code, but glibc has not required this for
1496 * The inclusion of <sys/sysmacros.h> by <sys/types.h> is deprecated. This
1497 means that in a future release, the macros “major”, “minor”, and “makedev”
1498 will only be available from <sys/sysmacros.h>.
1500 These macros are not part of POSIX nor XSI, and their names frequently
1501 collide with user code; see for instance glibc bug 19239 and Red Hat bug
1502 130601. <stdlib.h> includes <sys/types.h> under _GNU_SOURCE, and C++ code
1503 presently cannot avoid being compiled under _GNU_SOURCE, exacerbating the
1506 * New <fenv.h> features from TS 18661-1:2014 are added to libm: the
1507 fesetexcept, fetestexceptflag, fegetmode and fesetmode functions, the
1508 femode_t type and the FE_DFL_MODE and FE_SNANS_ALWAYS_SIGNAL macros.
1510 * Integer width macros from TS 18661-1:2014 are added to <limits.h>:
1511 CHAR_WIDTH, SCHAR_WIDTH, UCHAR_WIDTH, SHRT_WIDTH, USHRT_WIDTH, INT_WIDTH,
1512 UINT_WIDTH, LONG_WIDTH, ULONG_WIDTH, LLONG_WIDTH, ULLONG_WIDTH; and to
1513 <stdint.h>: INT8_WIDTH, UINT8_WIDTH, INT16_WIDTH, UINT16_WIDTH,
1514 INT32_WIDTH, UINT32_WIDTH, INT64_WIDTH, UINT64_WIDTH, INT_LEAST8_WIDTH,
1515 UINT_LEAST8_WIDTH, INT_LEAST16_WIDTH, UINT_LEAST16_WIDTH,
1516 INT_LEAST32_WIDTH, UINT_LEAST32_WIDTH, INT_LEAST64_WIDTH,
1517 UINT_LEAST64_WIDTH, INT_FAST8_WIDTH, UINT_FAST8_WIDTH, INT_FAST16_WIDTH,
1518 UINT_FAST16_WIDTH, INT_FAST32_WIDTH, UINT_FAST32_WIDTH, INT_FAST64_WIDTH,
1519 UINT_FAST64_WIDTH, INTPTR_WIDTH, UINTPTR_WIDTH, INTMAX_WIDTH,
1520 UINTMAX_WIDTH, PTRDIFF_WIDTH, SIG_ATOMIC_WIDTH, SIZE_WIDTH, WCHAR_WIDTH,
1523 * New <math.h> features are added from TS 18661-1:2014:
1525 - Signaling NaN macros: SNANF, SNAN, SNANL.
1527 - Nearest integer functions: roundeven, roundevenf, roundevenl, fromfp,
1528 fromfpf, fromfpl, ufromfp, ufromfpf, ufromfpl, fromfpx, fromfpxf,
1529 fromfpxl, ufromfpx, ufromfpxf, ufromfpxl.
1531 - llogb functions: the llogb, llogbf and llogbl functions, and the
1532 FP_LLOGB0 and FP_LLOGBNAN macros.
1534 - Max-min magnitude functions: fmaxmag, fmaxmagf, fmaxmagl, fminmag,
1537 - Comparison macros: iseqsig.
1539 - Classification macros: iscanonical, issubnormal, iszero.
1541 - Total order functions: totalorder, totalorderf, totalorderl,
1542 totalordermag, totalordermagf, totalordermagl.
1544 - Canonicalize functions: canonicalize, canonicalizef, canonicalizel.
1546 - NaN functions: getpayload, getpayloadf, getpayloadl, setpayload,
1547 setpayloadf, setpayloadl, setpayloadsig, setpayloadsigf, setpayloadsigl.
1549 * The functions strfromd, strfromf, and strfroml, from ISO/IEC TS 18661-1:2014,
1550 are added to libc. They convert a floating-point number into string.
1552 * Most of glibc can now be built with the stack smashing protector enabled.
1553 It is recommended to build glibc with --enable-stack-protector=strong.
1554 Implemented by Nick Alcock (Oracle).
1556 * The function explicit_bzero, from OpenBSD, has been added to libc. It is
1557 intended to be used instead of memset() to erase sensitive data after use;
1558 the compiler will not optimize out calls to explicit_bzero even if they
1559 are "unnecessary" (in the sense that no _correct_ program can observe the
1560 effects of the memory clear).
1562 * On ColdFire, MicroBlaze, Nios II and SH3, the float_t type is now defined
1563 to float instead of double. This does not affect the ABI of any libraries
1564 that are part of the GNU C Library, but may affect the ABI of other
1565 libraries that use this type in their interfaces.
1567 * On x86_64, when compiling with -mfpmath=387 or -mfpmath=sse+387, the
1568 float_t and double_t types are now defined to long double instead of float
1569 and double. These options are not the default, and this does not affect
1570 the ABI of any libraries that are part of the GNU C Library, but it may
1571 affect the ABI of other libraries that use this type in their interfaces,
1572 if they are compiled or used with those options.
1574 * The getentropy and getrandom functions, and the <sys/random.h> header file
1577 * The buffer size for byte-oriented stdio streams is now limited to 8192
1578 bytes by default. Previously, on Linux, the default buffer size on most
1579 file systems was 4096 bytes (and thus remains unchanged), except on
1580 network file systems, where the buffer size was unpredictable and could be
1581 as large as several megabytes.
1583 * The <sys/quota.h> header now includes the <linux/quota.h> header. Support
1584 for the Linux quota interface which predates kernel version 2.4.22 has
1587 * The malloc_get_state and malloc_set_state functions have been removed.
1588 Already-existing binaries that dynamically link to these functions will
1589 get a hidden implementation in which malloc_get_state is a stub. As far
1590 as we know, these functions are used only by GNU Emacs and this change
1591 will not adversely affect already-built Emacs executables. Any undumped
1592 Emacs executables, which normally exist only during an Emacs build, should
1593 be rebuilt by re-running “./configure; make” in the Emacs build tree.
1595 * The “ip6-dotint” and “no-ip6-dotint” resolver options, and the
1596 corresponding RES_NOIP6DOTINT flag from <resolv.h> have been removed.
1597 “no-ip6-dotint” had already been the default, and support for the
1598 “ip6-dotint” option was removed from the Internet in 2006.
1600 * The "ip6-bytestring" resolver option and the corresponding RES_USEBSTRING
1601 flag from <resolv.h> have been removed. The option relied on a
1602 backwards-incompatible DNS extension which was never deployed on the
1605 * The flags RES_AAONLY, RES_PRIMARY, RES_NOCHECKNAME, RES_KEEPTSIG,
1606 RES_BLAST defined in the <resolv.h> header file have been deprecated.
1607 They were already unimplemented.
1609 * The "inet6" option in /etc/resolv.conf and the RES_USE_INET6 flag for
1610 _res.flags are deprecated. The flag was standardized in RFC 2133, but
1611 removed again from the IETF name lookup interface specification in RFC
1612 2553. Applications should use getaddrinfo instead.
1614 * DNSSEC-related declarations and definitions have been removed from the
1615 <arpa/nameser.h> header file, and libresolv will no longer attempt to
1616 decode the data part of DNSSEC record types. Previous versions of glibc
1617 only implemented minimal support for the previous version of DNSSEC, which
1618 is incompatible with the currently deployed version.
1620 * The resource record type classification macros ns_t_qt_p, ns_t_mrr_p,
1621 ns_t_rr_p, ns_t_udp_p, ns_t_xfr_p have been removed from the
1622 <arpa/nameser.h> header file because the distinction between RR types and
1623 meta-RR types is not officially standardized, subject to revision, and
1624 thus not suitable for encoding in a macro.
1626 * The types res_sendhookact, res_send_qhook, re_send_rhook, and the qhook
1627 and rhook members of the res_state type in <resolv.h> have been removed.
1628 The glibc stub resolver did not support these hooks, but the header file
1629 did not reflect that.
1631 * For multi-arch support it is recommended to use a GCC which has
1632 been built with support for GNU indirect functions. This ensures
1633 that correct debugging information is generated for functions
1634 selected by IFUNC resolvers. This support can either be enabled by
1635 configuring GCC with '--enable-gnu-indirect-function', or by
1636 enabling it by default by setting 'default_gnu_indirect_function'
1637 variable for a particular architecture in the GCC source file
1640 * GDB pretty printers have been added for mutex and condition variable
1641 structures in POSIX Threads. When installed and loaded in gdb these pretty
1642 printers show various pthread variables in human-readable form when read
1643 using the 'print' or 'display' commands in gdb.
1645 * Tunables feature added to allow tweaking of the runtime for an application
1646 program. This feature can be enabled with the '--enable-tunables' configure
1647 flag. The GNU C Library manual has details on usage and README.tunables has
1648 instructions on adding new tunables to the library.
1650 * A new version of condition variables functions have been implemented in
1651 the NPTL implementation of POSIX Threads to provide stronger ordering
1654 * A new version of pthread_rwlock functions have been implemented to use a more
1655 scalable algorithm primarily through not using a critical section anymore to
1658 Security related changes:
1660 * On ARM EABI (32-bit), generating a backtrace for execution contexts which
1661 have been created with makecontext could fail to terminate due to a
1662 missing .cantunwind annotation. This has been observed to lead to a hang
1663 (denial of service) in some Go applications compiled with gccgo. Reported
1664 by Andreas Schwab. (CVE-2016-6323)
1666 * The DNS stub resolver functions would crash due to a NULL pointer
1667 dereference when processing a query with a valid DNS question type which
1668 was used internally in the implementation. The stub resolver now uses a
1669 question type which is outside the range of valid question type values.
1672 The following bugs are resolved with this release:
1674 [4099] stdio: Overly agressive caching by stream i/o functions.
1675 [7065] build: Support building glibc with -fstack-protector or -fstack-
1677 [9842] localedata: en_CA: incorrect date format
1678 [13165] nptl: pthread_cond_wait() can consume a signal that was sent
1679 before it started waiting
1680 [14139] manual: Do not hardcode platform names in manual/libm-err-tab.pl
1681 [15765] nptl: sem_open is wrongly a cancellation point
1682 [16421] network: IN6_IS_ADDR_UNSPECIFIED can use undefined s6_addr32
1683 [16458] libc: endian.h and netinet/in.h byte order macros return values of
1685 [16628] dynamic-link: Segfault after a binary without pthread dlopen()s a
1686 library linked with pthread
1687 [16630] nptl: Use SYSENTER for pthread_cond_broadcast/signal() (i.e. fix
1688 "FIXME: Ingo" issue)
1689 [16907] libc: <argp.h> compiled with --std=cXX disables __attribute__
1690 [17252] libc: getrandom and getentropy syscall
1691 [17730] malloc: thread-local storage is sometimes improperly free()'d
1692 after being __libc_memalign()'d
1693 [18241] stdio: failed fseek on memstream does not set errno and can fail
1695 [18243] nptl: sem_wait, sem_timedwait are cancellation points shm_open is
1697 [18463] nptl: pthread_cond_broadcast issue when surrounded by
1698 PTHREAD_PRIO_INHERIT mutex on ARM
1699 [18784] network: res_query and related function crash for special record
1700 type queries (CVE-2015-5180)
1701 [19380] math: strtod does not raise "inexact"
1702 [19387] string: Integer overflow in memchr
1703 [19390] string: Integer overflow in strncat
1704 [19398] build: linknamespace tests fail with massively parallel build
1705 [19402] nptl: Deadlock with robust shared mutex and asynchronous
1707 [19469] malloc: M_PERTURB in test-skeleton.c invalidates malloc tests
1708 [19473] malloc: Turn malloc_get_state etc. in compatibility symbols
1709 [19514] libc: [PATCH] Fix spelling errors in spelling
1710 "implement"/"implementation" in several places
1711 [19582] network: Deprecate RES_USE_INET6
1712 [19673] manual: clog10 docs appear to be erroneous
1713 [19810] dynamic-link: dlopen with both RTLD_NOLOAD and RTLD_NODELETE
1714 causes a segmentation fault
1715 [19826] libc: invalid pointer returned from __tls_get_addr with static
1717 [20016] network: resolv: Remove hooks support from the API
1718 [20019] dynamic-link: NULL pointer dereference in libc.so.6 IFUNC due to
1720 [20033] math: [x86_64] vectorized math function don't call the __finite
1722 [20116] nptl: use after free in pthread_create
1723 [20181] stdio: open_memstream(): writes not at end of stream corrupt data
1724 [20292] dynamic-link: Comparison in elf/dl-open.c _dl_addr_inside_object
1726 [20311] nptl: please install proc_service.h
1727 [20366] libc: Compilation errors in installed headers in strict-compliance
1729 [20370] malloc: malloc: Arena free list management is still racy
1730 (incorrect fix in bug 19243)
1731 [20386] libc: assert (X = 0) does not result in GCC warning
1732 [20432] malloc: malloc: Minimize interface required for interposition
1733 [20435] libc: Missing unwind info in __startcontext causes infinite loop
1734 in _Unwind_Backtrace (CVE-2016-6323)
1735 [20444] hurd: recvmsg: PF_LOCAL sockets and msg_name lead to SIGLOST
1736 [20452] nptl: Addition of sysdep.o to libpthread.a breaks relinking
1738 [20455] math: [powerpc] fesetexceptflag fails to clear FE_INVALID
1739 [20459] localedata: et_EE: locale has wrong {p,n}_cs_precedes value
1740 [20477] network: resolv: incorrect double-checked locking related to
1742 [20478] libc: libc_ifunc macro and similar usages leads to false debug-
1744 [20495] math: x86_64 performance degradation due to AVX/SSE transition
1746 [20497] localedata: lt_LT: LC_TIME d_fmt used is obsolete
1747 [20508] dynamic-link: _dl_runtime_resolve_avx/_dl_runtime_profile_avx512
1748 cause transition penalty
1749 [20517] math: sparcv9 missing fdiml compat symbol
1750 [20524] manual: strverscmp is inconsistent
1751 [20525] libc: <sys/quota.h> should be based on kernel headers
1752 [20539] math: GCC 7 -static -lm fails to link at -O3
1753 [20554] libc: ld: bss-plt forced due to /usr/lib/libc_nonshared.a(ppc-
1755 [20558] string: POSIX bcopy/bzero decls do not implement Object Size
1757 [20591] network: Remove obsolete DNSSEC support
1758 [20592] network: DNS resource record type classification macros in
1759 <arpa/nameser.h> are incorrect
1760 [20593] network: Update DNS RR type definitions
1761 [20611] network: getaddrinfo accepts invalid numeric scope IDs
1762 [20615] build: glibc build fails when using --with-cpu=power9 --enable-
1764 [20629] network: libresolv: Remove support for bitstring labels
1766 [20647] libc: GLIBC quitting every program - glibc on Pentium-S leads to
1767 assertion: "maxidx >= 2"
1768 [20660] math: [arm] Use VSQRT
1769 [20662] libc: checking whether x86_64-pc-linux-gnu-gcc implicitly enables
1770 -fstack-protector no (32bit gcc 6.2.0 pie and ssp enable)
1771 [20689] libc: Test for FMA should also check for AVX.
1772 [20707] glob: gl_pathv entries not set to NULL with GLOB_DOOFFS
1773 [20715] math: iszero macro breaks existing code
1774 [20718] math: [powerpc] copysignl raises "invalid" for sNaN
1775 [20728] libc: powerpc: Missing TOC stub in clone
1776 [20729] build: glibc-2.24 fails to build for i486 with -Os
1777 [20750] build: Build fails with default PIE enabled gcc-6.x
1778 [20768] math: [alpha] sqrt fegetenv namespace
1779 [20785] libc: binutils 2.28 fails to assemble power6/memset.S file in
1781 [20787] math: float_t is defined as float incorrectly on x86_64 even if
1782 __FLT_EVAL_METHOD__ is 2
1783 [20790] network: rpcgen buffer overrun in get_prog_declaration
1784 [20822] nptl: race condition in __lll_unlock_elision on powerpc
1785 [20829] libc: crypt snprintf namespace
1786 [20847] libc: tst-vfork3 failure
1787 [20855] math: Default bits/mathdef.h has inappropriate float_t
1788 [20859] math: [sh4] FP_ILOGB0 invalid
1789 [20864] localedata: iconv: cp936 missing single-byte euro sign (0x80,
1790 U+20AC), not same as GBK
1791 [20915] dynamic-link: global-dynamic TLS broken on aarch64
1792 [20916] math: pow handling of sNaN arguments
1793 [20918] build: Building with --enable-nss-crypt fails tst-linkall-static.
1794 [20919] math: Bad pow (qNaN, 0) result with -lieee
1795 [20940] math: hypot sNaN handling
1796 [20947] math: fmax, fmin sNaN handling
1797 [20956] libc: debug/tst-backtrace3-6 don't work with -O3 anymore
1798 [20964] network: sunrpc: Stack-based buffer overflow in getrpcport with
1800 [20971] string: powerpc64/power7 memchr overflows internal pointer check
1801 [20973] nptl: robust mutexes: Lost wake-ups
1802 [20974] locale: bs_BA: yesexpr/noexpr regexes accept any character
1803 [20978] nis: strlen on null pointer in nss_nisplus
1804 [20985] nptl: robust mutexes: lowlevelrobustlock assembly on x86 blocks on
1806 [21014] string: i686 memchr overflows internal pointer check
1807 [21019] libc: [mips] n32 lseek incorrect on overflow
1808 [21022] libc: [microblaze] __backtrace get_frame_size namespace
1809 [21026] libc: [MIPS] readahead syscall is broken on n64
1810 [21028] math: Fallback fesetexceptflag should always succeed
1811 [21045] libc: [powerpc-nofpu] swapcontext does not restore signal mask
1812 [21047] math: arm: fpu_control.h: _FPU_GETCW/_FPU_SETCW is rejected by
1814 [21053] libc: [SH] Namespace pollution from sys/ucontext.h
1815 [21061] librt: [microblaze] librt lost clock_* exports
1816 [21073] libc: tunables: insecure environment variables passed to
1817 subprocesses with AT_SECURE
1818 [21081] string: Missing vzeroupper in memset-vec-unaligned-erms.S
1822 * The minimum Linux kernel version that this version of the GNU C Library
1823 can be used with is 3.2, except on i[4567]86 and x86_64, where Linux
1824 kernel version 2.6.32 or later suffices (on architectures that already
1825 required kernel versions more recent than 3.2, those requirements remain
1826 unchanged). Linux 3.2 or later kernel headers are required on all
1829 * The pap_AN locale has been deleted. This has been deprecated for a long
1830 time. It has been replaced by pap_AW & pap_CW, both of which have long
1831 been included in previous releases.
1833 * The readdir_r and readdir64_r functions have been deprecated. It is
1834 recommended to use readdir and readdir64 instead.
1836 * The type “union wait” has been removed. It was deprecated in the early
1837 1990s and never part of POSIX. Application code should use the int type
1838 instead of “union wait”.
1840 * A new NSS action is added to facilitate large distributed system
1841 administration. The action, MERGE, allows remote user stores like LDAP
1842 to be merged into local user stores like /etc/groups in order to provide
1843 easy to use, updated, and managed sets of merged credentials. The new
1844 action can be used by configuring it in /etc/nsswitch.conf:
1845 group: files [SUCCESS=merge] nis
1846 Implemented by Stephen Gallagher (Red Hat).
1848 * The deprecated __malloc_initialize_hook variable has been removed from the
1851 * The long unused localedef --old-style option has been removed. It hasn't
1852 done anything in over 16 years. Scripts using this option can safely
1855 * nextupl, nextup, nextupf, nextdownl, nextdown and nextdownf are added to
1856 libm. They are defined by TS 18661 and IEEE754-2008. The nextup functions
1857 return the next representable value in the direction of positive infinity
1858 and the nextdown functions return the next representable value in the
1859 direction of negative infinity. These are currently enabled as GNU
1862 Security related changes:
1864 * An unnecessary stack copy in _nss_dns_getnetbyname_r was removed. It
1865 could result in a stack overflow when getnetbyname was called with an
1866 overly long name. (CVE-2016-3075)
1868 * Previously, getaddrinfo copied large amounts of address data to the stack,
1869 even after the fix for CVE-2013-4458 has been applied, potentially
1870 resulting in a stack overflow. getaddrinfo now uses a heap allocation
1871 instead. Reported by Michael Petlan. (CVE-2016-3706)
1873 * The glob function suffered from a stack-based buffer overflow when it was
1874 called with the GLOB_ALTDIRFUNC flag and encountered a long file name.
1875 Reported by Alexander Cherepanov. (CVE-2016-1234)
1877 * The Sun RPC UDP client could exhaust all available stack space when
1878 flooded with crafted ICMP and UDP messages. Reported by Aldy Hernandez'
1879 alloca plugin for GCC. (CVE-2016-4429)
1881 * The IPv6 name server management code in libresolv could result in a memory
1882 leak for each thread which is created, performs a failing naming lookup,
1883 and exits. Over time, this could result in a denial of service due to
1884 memory exhaustion. Reported by Matthias Schiffer. (CVE-2016-5417)
1886 The following bugs are resolved with this release:
1888 [1170] localedata: ne_NP: update Nepali locale definition file
1889 [3629] manual: stpcpy description in string.texi refers to MS-DOG instead
1891 [6527] malloc: [powerpc] Malloc alignment insufficient for PowerPC
1892 [6796] math: fdim() does not set errno on overflow
1893 [10354] libc: posix_spawn should use vfork() in more cases than presently
1894 [11213] localedata: localedata: add copyright disclaimer to locale files
1895 [12143] localedata: chr_US: new Cherokee locale
1896 [12450] localedata: sgs_LT: new locale
1897 [12676] localedata: ln_CD: new locale
1898 [13237] localedata: LC_ADDRESS.country_name: update all locales w/latest
1900 [13304] math: fma, fmaf, fmal produce wrong results
1901 [14259] build: --localedir arg to configure is ignored
1902 [14499] nptl: Does posix_spawn invoke atfork handlers / use vfork?
1903 [14750] libc: Race condition in posix_spawn vfork usage vs signal handlers
1904 [14934] localedata: es_CL: wrong first weekday chilean locale
1905 [15262] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of
1907 [15263] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of 1/0
1909 [15264] localedata: LC_MESSAGES.yesstr/nostr: lacking in many locales
1910 [15368] nptl: raise() is not async-signal-safe
1911 [15479] math: ceil, floor, round and trunc raise inexact exception
1912 [15578] localedata: kk_KZ: various updates
1913 [16003] localedata: pap_AN: punt old locale
1914 [16137] localedata: iw_IL: punt old locale
1915 [16190] localedata: eo: new esperanto locale
1916 [16374] localedata: lv_LV: change currency symbol in LC_MONETARY to euro
1917 [16742] malloc: race condition: pthread_atfork() called before first
1918 malloc() results in unexpected locking behaviour/deadlocks
1919 [16975] localedata: LC_MESSAGES.yesexpr/noexpr: revisit capitalization in
1921 [16983] localedata: postal_fmt does not allow %l and %n modifiers
1922 [17565] localedata: pt_PT: wrong (work-)week start
1923 [17899] math: [powerpc] floorl returns negative zero with FE_DOWNWARD
1924 [17950] build: Build fails with -msse
1925 [18205] localedata: be_BY*: wrong first_weekday and first_workday
1926 [18433] libc: posix_spawn does not return correctly upon failure to
1928 [18453] localedata: charmaps/IBM875: incorrect codes
1929 [18712] string: bits/string2.h incompatible with -O2 -Werror=packed
1931 [18896] localedata: he_IL: improvements for currency
1932 [18911] localedata: ro_RO: Correcting week day name for "Tuesday" in
1933 Romanian locale data
1934 [18960] locale: s390: _nl_locale_subfreeres uses larl opcode on misaligned
1936 [19056] libc: Deprecate readdir_r
1937 [19133] localedata: pt_*: days & months should be lowercase in Portuguese
1939 [19198] localedata: nl_NL: small improvements for Dutch locales
1940 [19257] network: Per-thread memory leak in __res_vinit with IPv6
1941 nameservers (CVE-2016-5417)
1942 [19269] build: tst-audit4 and tst-audit10 failures with gcc-6 on non avx
1944 [19400] locale: Language missing in "iso-639.def", trivial fix in
1946 [19431] malloc: Deadlock between fflush, getdelim, and fork
1947 [19505] libc: Incorrect file descriptor validity checks in
1948 posix_spawn_file_actions_add{open,close,dup2}
1949 [19509] dynamic-link: dlsym, dlvsym do not report errors through dlerror
1950 when using RTLD_NEXT
1951 [19512] locale: Stale `#ifndef HAVE_BUILTIN_EXPECT' in
1952 `intl/{gettextP,loadinfo}.h'
1953 [19534] libc: execle, execlp may use malloc
1954 [19568] localedata: *_CH: Swiss locales have inconsistent start of week
1955 [19573] network: res_nclose and __res_maybe_init disagree about name
1956 server initialization, breaking Hesiod
1957 [19575] localedata: Status of GB18030 tables
1958 [19581] localedata: sr_* date_fmt string contains additional newline
1959 [19583] string: SSSE3_Fast_Copy_Backward flag needs to be enabled for AMD
1961 [19592] math: [ldbl-128ibm] ceill incorrect in non-default rounding modes
1962 [19593] math: [ldbl-128ibm] truncl incorrect in non-default rounding modes
1963 [19594] math: [ldbl-128ibm] roundl incorrect in non-default rounding modes
1964 [19595] math: [ldbl-128ibm] fmodl incorrect for results in subnormal
1966 [19602] math: [ldbl-128ibm] fmodl handling of equal arguments with low
1968 [19603] math: [ldbl-128ibm] remainderl, remquol incorrect sign handling in
1970 [19610] dynamic-link: ldconfig -X removes stale symbolic links
1971 [19613] libc: s390x (64 bit) macro expansion WCOREDUMP and others
1972 [19633] locale: strfmon_l applies global locale to number formatting
1973 [19642] network: Memory leak in getnameinfo
1974 [19648] libc: test-skeleton.c: Do not set RLIMIT_DATA
1975 [19653] libc: Potential for NULL pointer dereference (CWE-476) in
1977 [19654] math: [x86_64] Need testcase for BZ #19590 fix
1978 [19671] localedata: Missing Sanity Check for malloc() in 'tst-fmon.c' &
1980 [19674] math: [ldbl-128ibm] powl incorrect overflow handling
1981 [19677] math: [ldbl-128ibm] remainderl equality test incorrect for zero
1983 [19678] math: [ldbl-128ibm] nextafterl, nexttowardl incorrect sign of zero
1985 [19679] dynamic-link: gcc-4.9.3 C++ exception handling broken due to
1987 [19726] locale: Converting UCS4LE to INTERNAL with iconv() does not update
1988 pointers and lengths in error-case.
1989 [19727] locale: Converting from/to UTF-xx with iconv() does not always
1990 report errors on UTF-16 surrogates values.
1991 [19755] nscd: nscd assertion failure in gc
1992 [19758] dynamic-link: Typo in EXTRA_LD_ENVVARS for x86-64
1993 [19759] libc: mempcpy shouldn't be inlined
1994 [19762] dynamic-link: HAS_CPU_FEATURE/HAS_ARCH_FEATURE are easy to misuse
1995 [19765] libc: s390 needs an optimized mempcpy
1996 [19779] glob: glob: buffer overflow with GLOB_ALTDIRFUNC due to incorrect
1997 NAME_MAX limit assumption (CVE-2016-1234)
1998 [19783] build: benchtests don't support --enable-hardcoded-path-in-tests
1999 [19787] network: Missing and incorrect truncation checks in getnameinfo
2000 [19790] math: [ldbl-128ibm] nearbyintl incorrect in non-default rounding
2002 [19791] network: Assertion failure in res_query.c with un-connectable name
2004 [19792] libc: MIPS: backtrace yields infinite backtrace with makecontext
2005 [19822] math: libm.so install clobbers old version
2006 [19825] network: resolv: send_vc can return uninitialized data in second
2007 response to getaddrinfo
2008 [19830] network: nss_dns: should check RDATA length against buffer length
2009 [19831] network: nss_dns: getaddrinfo returns uninitialized data when
2010 confronted with A/AAAA records of invalid size
2011 [19837] nss: nss_db: No retries for some long lines with a larger buffer
2012 [19848] math: powl(10,n) for n=-4,-5,-6,-7 is off by more than 1 ULP
2013 [19853] stdio: Printing IBM long double in decimal with high precision is
2015 [19860] build: x86_64: compile errors for tst-audit10 and tst-auditmod10b
2016 [19861] nptl: libpthread IFUNC resolver for fork can lead to crash
2017 [19862] network: resolv, nss_dns: Remove remaining logging of unexpected
2019 [19865] network: Assertion failure or memory leak in
2020 _nss_dns_getcanonname_r
2021 [19868] network: nss_dns: netent code does not skip over non-PTR records
2022 [19879] network: nss_dns: Stack overflow in getnetbyname implementation
2024 [19881] string: Improve x86-64 memset
2025 [19907] string: Incorrect memcpy tests
2026 [19916] dynamic-link: S390: fprs/vrs are not saved/restored while
2028 [19925] libc: termios.h XCASE namespace
2029 [19928] string: memmove-vec-unaligned-erms.S is slow with large data size
2030 [19929] libc: limits.h NL_NMAX namespace
2031 [19931] stdio: Memory leak in vfprintf
2032 [19957] libc: clone(CLONE_VM) access invalid parent memory
2033 [19963] localedata: en_IL: New locale
2034 [19989] stdio: stdio.h cuserid namespace
2035 [19994] network: getaddrinfo does not restore RES_USE_INET6 flag in
2037 [19996] locale: langinfo.h nl_langinfo_l namespace
2038 [20005] stdio: fflush on a file opened with fmemopen resets position to 0
2039 [20010] network: getaddrinfo: Stack overflow in hostent translation
2041 [20012] stdio: libio: fmemopen append mode failure
2042 [20014] stdio: stdio.h namespace for pre-threads POSIX
2043 [20017] network: resolv: Use gmtime_r instead of gmtime in p_secstodate
2044 [20023] libc: fcntl.h timespec namespace
2045 [20024] math: [x86_64] vectorized sincos trashes the stack
2046 [20031] network: nss_hesiod: Heap overflow in get_txt_records
2047 [20041] time: sys/time.h timespec namespace
2048 [20043] libc: unistd.h missing cuserid for UNIX98 and before
2049 [20044] libc: unistd.h missing pthread_atfork for UNIX98
2050 [20051] libc: ttyslot in wrong header under wrong conditions
2051 [20054] libc: gethostname not declared for XPG4
2052 [20055] libc: termios.h missing tcgetsid for XPG4
2053 [20072] dynamic-link: x86 init_cpu_features is called twice in static
2055 [20073] libc: sys/stat.h fchmod namespace
2056 [20074] libc: stdlib.h rand_r namespace
2057 [20076] libc: sys/stat.h missing S_IFSOCK, S_ISSOCK for XPG4
2058 [20094] libc: stdlib.h should not declare grantpt, ptsname, unlockpt for
2060 [20111] libc: struct sockaddr_storage cannot be aggregate-copied
2061 [20112] network: sunrpc: stack (frame) overflow in Sun RPC clntudp_call
2063 [20115] string: Extra alignment in memset-vec-unaligned-erms.S
2064 [20119] libc: Wrong mask for processors level type from CPUID
2065 [20139] dynamic-link: Upper part of zmm is zeroed if Glibc is built with
2066 AS not supporting AVX512
2067 [20151] math: [ldbl-128/ldbl-128ibm] j0l, j1l, y0l, y1l return sNaN for
2069 [20153] math: [ldbl-128ibm] sqrtl (sNaN) returns sNaN
2070 [20156] math: [ldbl-128ibm] ceill, rintl etc. return sNaN for sNaN
2072 [20157] math: [powerpc] fabsl (sNaN) wrongly raises "invalid"
2073 [20160] math: [powerpc] ceil, rint etc. return sNaN for sNaN input
2074 [20178] libc: posix_spawn{p} should not call exit
2075 [20191] stdio: libio: vtables hardening
2076 [20195] string: FMA4 detection requires CPUID execution with register
2078 [20198] libc: quick_exit incorrectly destroys C++11 thread objects.
2079 [20205] math: [i386/x86_64] nextafterl incorrect incrementing negative
2081 [20212] math: acos (sNaN) returns sNaN
2082 [20213] math: asin (sNaN) returns sNaN
2083 [20214] network: Linux header sync with linux/in6.h and ipv6.h again.
2084 [20218] math: [i386] asinhl (sNaN) returns sNaN
2085 [20219] math: [i386] atanhl (sNaN) returns sNaN
2086 [20222] stdio: fopencookie: Mangle function pointers
2087 [20224] math: [i386] cbrtl (sNaN) returns sNaN
2088 [20225] math: ldexp, scalbn, scalbln return sNaN for sNaN input
2089 [20226] math: [i386/x86_64] expl, exp10l, expm1l return sNaN for sNaN
2091 [20227] math: [i386/x86_64] logl (sNaN) returns sNaN
2092 [20228] math: [i386/x86_64] log10l (sNaN) returns sNaN
2093 [20229] math: [i386/x86_64] log1pl (sNaN) returns sNaN
2094 [20232] math: [ldbl-128] expm1l (sNaN) returns sNaN
2095 [20233] math: [ldbl-128ibm] expm1l (sNaN) returns sNaN
2096 [20234] math: [ldbl-128ibm] log1pl (sNaN) returns sNaN
2097 [20235] math: [i386/x86_64] log2l (sNaN) returns sNaN
2098 [20237] nss: nss_db: get*ent segfaults without preceding set*ent
2099 [20240] math: modf (sNaN) returns sNaN
2100 [20248] libc: debug/tst-longjump_chk2 calls printf from a signal handler
2101 [20250] math: frexp (sNaN) returns sNaN
2102 [20252] math: atan2 (sNaN, qNaN) fails to raise "invalid"
2103 [20255] math: [i386] fdim, fdimf return with excess range and precision /
2105 [20256] math: [i386/x86_64] fdiml returns sNaN for sNaN input
2106 [20260] string: ../sysdeps/x86/bits/string.h:1092:3: error: array
2107 subscript is below array bounds [-Werror=array-bounds]
2108 [20262] nis: _nss_nis_initgroups_dyn always returns NSS_STATUS_NOTFOUND
2109 [20263] nptl: robust mutex deadlocks if other thread requests timedlock
2111 [20277] libc: $dp is not initialized correctly in sysdeps/hppa/start.S
2112 [20284] malloc: malloc: Corrupt arena avoidance causes unnecessary mmap
2114 [20296] math: [i386/x86_64] scalbl returns sNaN for sNaN input, missing
2115 "invalid" exceptions
2116 [20314] nptl: make[4]: *** [/usr/include/stdlib.h] Error 1
2117 [20316] localedata: id_ID: Februari instead of Pebruari
2118 [20327] string: POWER8 strcasecmp returns incorrect result
2119 [20347] math: Failure: Test: j0_downward (0xap+0)
2120 [20348] libc: FAIL: misc/tst-preadvwritev64
2121 [20349] libc: 64-bit value is passed differently in p{readv,writev}{64}
2122 [20350] libc: There is no test for p{read,write}64
2123 [20357] math: Incorrect cos result for 1.5174239687223976
2124 [20384] build: Don't run libmvec-sincos-avx* tests on non avx machines
2128 * Unicode 8.0.0 Support: Character encoding, character type info, and
2129 transliteration tables are all updated to Unicode 8.0.0, using new
2130 and/or improved generator scripts contributed by Mike FABIAN (Red Hat).
2131 These updates cause user visible changes, such as the fixes for bugs
2132 89, 16061, and 18568.
2134 * sched_setaffinity, pthread_setaffinity_np no longer attempt to guess the
2135 kernel-internal CPU set size. This means that requests that change the
2136 CPU affinity which failed before (for example, an all-ones CPU mask) will
2137 now succeed. Applications that need to determine the effective CPU
2138 affinities need to call sched_getaffinity or pthread_getaffinity_np after
2139 setting it because the kernel can adjust it (and the previous size check
2140 would not detect this in the majority of cases).
2142 * The fts.h header can now be used with -D_FILE_OFFSET_BITS=64. With LFS
2143 the following new symbols are used: fts64_children, fts64_close,
2144 fts64_open, fts64_read and fts64_set.
2146 * getaddrinfo now detects certain invalid responses on an internal netlink
2147 socket. If such responses are received, an affected process will
2148 terminate with an error message of "Unexpected error <number> on netlink
2149 descriptor <number>" or "Unexpected netlink response of size <number> on
2150 descriptor <number>". The most likely cause for these errors is a
2151 multi-threaded application which erroneously closes and reuses the netlink
2152 file descriptor while it is used by getaddrinfo.
2154 * A defect in the malloc implementation, present since glibc 2.15 (2012) or
2155 glibc 2.10 via --enable-experimental-malloc (2009), could result in the
2156 unnecessary serialization of memory allocation requests across threads.
2157 The defect is now corrected. Users should see a substantial increase in
2158 the concurent throughput of allocation requests for applications which
2159 trigger this bug. Affected applications typically create and
2160 destroy threads frequently. (Bug 19048 was reported and analyzed by
2163 * There is now a --disable-timezone-tools configure option for disabling the
2164 building and installing of the timezone related utilities (zic, zdump, and
2165 tzselect). This is useful for people who build the timezone data and code
2166 independent of the GNU C Library.
2168 * The obsolete header <regexp.h> has been removed. Programs that require
2169 this header must be updated to use <regex.h> instead.
2171 * The obsolete functions bdflush, create_module, get_kernel_syms,
2172 query_module and uselib are no longer available to newly linked binaries;
2173 the header <sys/kdaemon.h> has been removed. These functions and header
2174 were specific to systems using the Linux kernel and could not usefully be
2175 used with the GNU C Library on systems with version 2.6 or later of the
2178 * Optimized string, wcsmbs and memory functions for IBM z13.
2179 Implemented by Stefan Liebler.
2181 * Newly linked programs that define a variable called signgam will no longer
2182 have it set by the lgamma, lgammaf and lgammal functions. Programs that
2183 require signgam to be set by those functions must ensure that they use the
2184 variable provided by the GNU C Library and declared in <math.h>, without
2185 defining their own copy.
2187 * The minimum GCC version that can be used to build this version of the GNU
2188 C Library is GCC 4.7. Older GCC versions, and non-GNU compilers, can
2189 still be used to compile programs using the GNU C Library.
2191 Security related changes:
2193 * An out-of-bounds value in a broken-out struct tm argument to strftime no
2194 longer causes a crash. Reported by Adam Nielsen. (CVE-2015-8776)
2196 * The LD_POINTER_GUARD environment variable can no longer be used to disable
2197 the pointer guard feature. It is always enabled. Previously,
2198 LD_POINTER_GUARD could be used to disable security hardening in binaries
2199 running in privileged AT_SECURE mode. Reported by Hector Marco-Gisbert.
2202 * An integer overflow in hcreate and hcreate_r could lead to an
2203 out-of-bounds memory access. Reported by Szabolcs Nagy. (CVE-2015-8778)
2205 * The catopen function no longer has unbounded stack usage. Reported by
2206 Max. (CVE-2015-8779)
2208 * The nan, nanf and nanl functions no longer have unbounded stack usage
2209 depending on the length of the string passed as an argument to the
2210 functions. Reported by Joseph Myers. (CVE-2014-9761)
2212 * A stack-based buffer overflow was found in libresolv when invoked from
2213 libnss_dns, allowing specially crafted DNS responses to seize control
2214 of execution flow in the DNS client. The buffer overflow occurs in
2215 the functions send_dg (send datagram) and send_vc (send TCP) for the
2216 NSS module libnss_dns.so.2 when calling getaddrinfo with AF_UNSPEC
2217 family. The use of AF_UNSPEC triggers the low-level resolver code to
2218 send out two parallel queries for A and AAAA. A mismanagement of the
2219 buffers used for those queries could result in the response of a query
2220 writing beyond the alloca allocated buffer created by
2221 _nss_dns_gethostbyname4_r. Buffer management is simplified to remove
2222 the overflow. Thanks to the Google Security Team and Red Hat for
2223 reporting the security impact of this issue, and Robert Holiday of
2224 Ciena for reporting the related bug 18665. (CVE-2015-7547)
2226 The following bugs are resolved with this release:
2228 [89] localedata: Locales nb_NO and nn_NO should transliterate æøå
2229 [887] math: Math library function "logb" and "nextafter" inconsistent
2230 [2542] math: Incorrect return from float gamma (-0X1.FA471547C2FE5P+1)
2231 [2543] math: Incorrect return from float gamma (-0X1.9260DCP+1)
2232 [2558] math: Incorrect return from double gamma (-0X1.FA471547C2FE5P+1)
2233 [2898] libc: [improve] warning: the use of `mktemp' is dangerous, better
2235 [4404] localedata: German translation of "Alarm clock" is misleading
2236 [6799] math: nextafter() and nexttoward() doen't set errno on
2237 overflow/underflow errors
2238 [6803] math: scalb(), scalbln(), scalbn() do not set errno on
2240 [10432] nis: _nss_nis_setnetgrent assertion failure
2241 [11460] libc: fts has no LFS support
2242 [12926] network: getaddrinfo()/make_request() may spin forever
2243 [13065] nptl: Race condition in pthread barriers
2244 [13690] nptl: pthread_mutex_unlock potentially cause invalid access
2245 [14341] dynamic-link: Dynamic linker crash when DT_JMPREL and DT_REL{,A}
2247 [14551] math: [ldbl-128ibm] strtold overflow handling for IBM long double
2248 [14912] libc: Rename non-installed bits/*.h headers
2249 [15002] libc: Avoid undefined behavior in posix_fallocate overflow check
2250 [15367] math: Let gcc use __builtin_isinf
2251 [15384] math: One constant fewer in ieee754/dbl-64/wordsize-64/s_finite.c
2252 [15421] math: lgamma wrongly sets signgam for ISO C
2253 [15470] math: [arm] On ARM llrintl() and llroundl() do not raise
2254 FE_INVALID with argument out of range
2255 [15491] math: [i386/x86_64] x86 nearbyint implementations wrongly clear
2257 [15786] dynamic-link: ifunc resolver functions can smash function
2259 [15918] math: Unnecessary check for equality in hypotf()
2260 [16061] localedata: Review / update transliteration data
2261 [16068] math: [i386/x86_64] x86 and x86_64 fesetenv exclude state they
2263 [16141] time: strptime %z offset restriction
2264 [16171] math: drem should be alias of remainder
2265 [16296] math: fegetround is pure?
2266 [16347] math: [ldbl-128ibm] ldbl-128/e_lgammal_r.c may not be suitable.
2267 [16364] libc: sleep may leave SIGCHLD blocked on sync cancellation on
2269 [16399] math: [mips] lrint / llrint / lround / llround missing exceptions
2270 [16415] math: Clean up ldbl-128 / ldbl-128ibm expm1l for large positive
2272 [16422] math: [powerpc] math-float, math-double failing llrint tests with
2273 "Exception "Inexact" set" on ppc32
2274 [16495] localedata: nl_NL: date_fmt: shuffle year/month around
2275 [16517] math: Missing underflow exception from tanf/tan/tanl
2276 [16519] math: Missing underflow exception from sinhf
2277 [16520] math: Missing underflow exception from tanhf
2278 [16521] math: Missing underflow exception from exp2
2279 [16620] math: [ldbl-128ibm] exp10l spurious overflows / bad directed
2281 [16734] stdio: fopen calls mmap to allocate its buffer
2282 [16961] math: nan function incorrect handling of bad sequences
2283 [16962] math: nan function unbounded stack allocation (CVE-2014-9761)
2284 [16973] localedata: Fix lang_lib/lang_term as per ISO 639-2
2285 [16985] locale: localedef: confusing error message when opening output
2287 [17118] math: ctanh(INFINITY + 2 * I) returns incorrect value
2288 [17197] locale: Redundant shift character in iconv conversion output at
2290 [17243] libc: trunk/posix/execl.c:53: va_args problem ?
2291 [17244] libc: trunk/sysdeps/unix/sysv/linux/semctl.c:116: va_args muxup ?
2292 [17250] dynamic-link: static linking breaks nss loading
2293 (getaddrinfo/getpwnam/etc...)
2294 [17404] libc: atomic_exchange_rel lacking a barrier on MIPS16, GCC before
2296 [17441] math: isnan() should use __builtin_isnan() in GCC
2297 [17514] nptl: Assert failure unlocking ERRORCHECK mutex after timedlock
2298 (related to lock elision)
2299 [17787] manual: Exponent on page 324 of the PDF ends prematurely
2300 [17886] time: strptime should be able to parse "Z" as a timezone with %z
2301 [17887] time: strptime should be able to parse "+01:00" style timezones
2302 [17905] libc: catopen() Multiple unbounded stack allocations
2304 [18084] libc: backtrace (..., 0) dumps core on x86
2305 [18086] libc: nice() sets errno to 0 on success
2306 [18240] libc: hcreate, hcreate_r should fail with ENOMEM if element count
2307 is too large (CVE-2015-8778)
2308 [18251] dynamic-link: SONAME missing when audit modules provides path
2309 [18265] libc: add attributes for wchar string and memory functions
2310 [18370] math: csqrt missing underflows
2311 [18421] libc: [hppa] read-only segment has dynamic relocations
2312 [18472] libc: Obsolete syscall wrappers should be compat symbols
2313 [18480] libc: hppa glibc miscompilation in sched_setaffinity()
2314 [18491] localedata: Update tr_TR LC_CTYPE as part of Unicode updates
2315 [18525] localedata: Remove locale timezone information
2316 [18560] libc: [powerpc] spurious bits/ipc.h definitions
2317 [18568] localedata: Update locale data to Unicode 8.0
2318 [18589] locale: sort-test.sh fails at random
2319 [18595] math: ctan, ctanh missing underflows
2320 [18604] libc: assert macro-expands its argument
2321 [18610] math: S390: fetestexcept() reports any exception if DXC-code
2322 contains a vector instruction exception.
2323 [18611] math: j1, jn missing errno setting on underflow
2324 [18618] localedata: sync Chechen locale definitions with other *_RU
2326 [18647] math: powf(-0x1.000002p0, 0x1p30) returns 0 instead of +inf
2327 [18661] libc: Some x86-64 assembly codes don't align stack to 16 bytes
2328 [18665] network: In send_dg, the recvfrom function is NOT always using the
2329 buffer size of a newly created buffer (CVE-2015-7547)
2330 [18674] libc: [i386] trunk/sysdeps/i386/tst-auditmod3b.c:84: possible
2332 [18675] libc: fpathconf(_PC_NAME_MAX) fails against large filesystems for
2334 [18681] libc: regexp.h is obsolete and buggy, and should be desupported
2335 [18699] math: tilegx cproj() for various complex infinities does not yield
2337 [18724] libc: Harden put*ent functions against data injection
2338 [18743] nptl: PowerPC: findutils testcase fails with --enable-lock-elision
2339 [18755] build: build errors with -DNDEBUG
2340 [18757] stdio: fmemopen fails to set errno on failure
2341 [18778] dynamic-link: ld.so crashes if failed dlopen causes libpthread to
2343 [18781] libc: openat64 lacks O_LARGEFILE
2344 [18787] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/atomic.h:71:6:
2345 error: can’t find a register in class ‘R1_REGS’ while reloading ‘asm’
2346 [18789] math: [ldbl-128ibm] sinhl inaccurate near 0
2347 [18790] math: [ldbl-128ibm] tanhl inaccurate
2348 [18795] libc: stpncpy fortification misses buffer lengths that are
2349 statically too large
2350 [18796] build: build fails for --disable-mathvec
2351 [18803] math: hypot missing underflows
2352 [18820] stdio: fmemopen may leak memory on failure
2353 [18823] math: csqrt spurious underflows
2354 [18824] math: fma spurious underflows
2355 [18825] math: pow missing underflows
2356 [18857] math: [ldbl-128ibm] nearbyintl wrongly uses signaling comparisons
2357 [18868] nptl: pthread_barrier_init typo has in-theory-undefined behavior
2358 [18870] build: sem_open.c fails to compile with missing symbol
2360 [18872] stdio: Fix memory leak in printf_positional
2361 [18873] libc: posix_fallocate overflow check ineffective
2362 [18875] math: Excess precision leads incorrect libm
2363 [18877] libc: arm: mmap offset regression
2364 [18887] libc: memory corruption when using getmntent on blank lines
2365 [18918] localedata: hu_HU: change time to HH:MM:SS format
2366 [18921] libc: Regression: extraneous stat() and fstat() performed by
2368 [18928] dynamic-link: LD_POINTER_GUARD is not ignored for privileged
2369 binaries (CVE-2015-8777)
2370 [18951] math: tgamma missing underflows
2371 [18952] math: [ldbl-128/ldbl-128ibm] lgammal spurious "invalid", incorrect
2373 [18953] localedata: lt_LT: change currency symbol to the euro
2374 [18956] math: powf inaccuracy
2375 [18961] math: [i386] exp missing underflows
2376 [18966] math: [i386] exp10 missing underflows
2377 [18967] math: math.h XSI POSIX namespace (gamma, isnan, scalb)
2378 [18969] build: multiple string test failures due to missing locale
2380 [18970] libc: Reference of pthread_setcancelstate in libc.a
2381 [18977] math: float / long double Bessel functions not in XSI POSIX
2382 [18980] math: i386 libm functions return with excess range and precision
2383 [18981] math: i386 scalb*, ldexp return with excess range and precision
2384 [18982] stdio: va_list and vprintf
2385 [18985] time: Passing out of range data to strftime() causes a segfault
2387 [19003] math: [x86_64] fma4 version of pow inappropriate contraction
2388 [19007] libc: FAIL: elf/check-localplt with -z now and binutils 2.26
2389 [19012] locale: iconv_open leaks memory on error path
2390 [19016] math: clog, clog10 inaccuracy
2391 [19018] nptl: Mangle function pointers in tls_dtor_list
2392 [19032] math: [i386] acosh (-qNaN) spurious "invalid" exception
2393 [19046] math: ldbl-128 / ldbl-128ibm lgamma bad overflow handling
2394 [19048] malloc: malloc: arena free list can become cyclic, increasing
2396 [19049] math: [powerpc] erfc incorrect zero sign
2397 [19050] math: [powerpc] log* incorrect zero sign
2398 [19058] math: [x86_64] Link fail with -fopenmp and -flto
2399 [19059] math: nexttoward overflow incorrect in non-default rounding modes
2400 [19071] math: ldbl-96 lroundl incorrect just below powers of 2
2401 [19074] network: Data race in _res_hconf_reorder_addrs
2402 [19076] math: [ldbl-128ibm] log1pl (-1) wrong sign of infinity
2403 [19077] math: [ldbl-128ibm] logl (1) incorrect sign of zero result
2404 [19078] math: [ldbl-128ibm] expl overflow incorrect in non-default
2406 [19079] math: dbl-64/wordsize-64 lround based on llround incorrect for
2408 [19085] math: ldbl-128 lrintl, lroundl missing exceptions for 32-bit long
2409 [19086] manual: posix_fallocate64 documented argument order is wrong.
2410 [19088] math: lround, llround missing exceptions close to overflow
2412 [19094] math: lrint, llrint missing exceptions close to overflow threshold
2413 [19095] math: dbl-64 lrint incorrect for 64-bit long
2414 [19122] dynamic-link: Unnecessary PLT relocations in librtld.os
2415 [19124] dynamic-link: ld.so failed to build with older assmebler
2416 [19125] math: [powerpc32] llroundf, llround incorrect exceptions
2417 [19129] dynamic-link: [arm] Concurrent lazy TLSDESC resolution can crash
2418 [19134] math: [powerpc32] lround, lroundf spurious exceptions
2419 [19137] libc: i386/epoll_pwait.S doesn't support cancellation
2420 [19143] nptl: Remove CPU set size checking from sched_setaffinity,
2421 pthread_setaffinity_np
2422 [19156] math: [ldbl-128] j0l spurious underflows
2423 [19164] nptl: tst-getcpu fails with many possible CPUs
2424 [19168] math: math/test-ildoubl and math/test-ldouble failure
2425 [19174] nptl: PowerPC: TLE enabled pthread mutex performs poorly.
2426 [19178] dynamic-link: ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA confuses
2428 [19181] math: [i386/x86_64] fesetenv (FE_DFL_ENV), fesetenv
2429 (FE_NOMASK_ENV) do not clear SSE exceptions
2430 [19182] malloc: malloc deadlock between ptmalloc_lock_all and
2431 _int_new_arena/reused_arena
2432 [19189] math: [ldbl-128] log1pl (-qNaN) spurious "invalid" exception
2433 [19201] math: dbl-64 remainder incorrect sign of zero result
2434 [19205] math: bits/math-finite.h conditions do not match math.h and
2436 [19209] math: bits/math-finite.h wrongly maps ldexp to scalbn
2437 [19211] math: lgamma functions do not set signgam for -ffinite-math-only
2438 for C99-based standards
2439 [19212] libc: features.h not -Wundef clean
2440 [19213] math: [i386/x86_64] log* (1) incorrect zero sign for -ffinite-
2442 [19214] libc: Family and model identification for AMD CPU's are incorrect.
2443 [19219] libc: GLIBC build fails for ia64 with missing __nearbyintl
2444 [19228] math: [powerpc] nearbyint wrongly clears "inexact", leaves traps
2446 [19235] math: [powerpc64] lround, lroundf, llround, llroundf spurious
2447 "inexact" exceptions
2448 [19238] math: [powerpc] round, roundf spurious "inexact" for integer
2450 [19242] libc: strtol incorrect in Turkish locales
2451 [19243] malloc: reused_arena can pick an arena on the free list, leading
2452 to an assertion failure and reference count corruption
2453 [19253] time: tzset() ineffective when temporary TZ did not include DST
2455 [19266] math: strtod ("NAN(I)") incorrect in Turkish locales
2456 [19270] math: [hppa] Shared libm missing __isnanl
2457 [19285] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/mman.h: missing
2458 MAP_HUGETLB and MAP_STACK defines
2459 [19313] nptl: Wrong __cpu_mask for x32
2460 [19347] libc: grantpt: try to force a specific gid even without pt_chown
2461 [19349] math: [ldbl-128ibm] tanhl inaccurate for small arguments
2462 [19350] math: [ldbl-128ibm] sinhl spurious overflows
2463 [19351] math: [ldbl-128ibm] logl inaccurate near 1
2464 [19363] time: x32: times() return value wrongly truncates/sign extends
2466 [19367] dynamic-link: Improve branch prediction on Silvermont
2467 [19369] network: Default domain name not reset by res_ninit when "search"
2468 / "domain" entry is removed from resolv.conf
2469 [19375] math: powerpc: incorrect results for POWER7 logb with negative
2471 [19385] localedata: bg_BG: time separator should be colon, not comma
2472 [19408] libc: linux personality syscall wrapper may erroneously return an
2473 error on 32-bit architectures
2474 [19415] libc: dladdr returns wrong names on hppa
2475 [19432] libc: iconv rejects redundant escape sequences in IBM900, IBM903,
2476 IBM905, IBM907, and IBM909
2477 [19439] math: Unix98 isinf and isnan functions conflict with C++11
2478 [19443] build: build failures with -DDEBUG
2479 [19451] build: Make check fails on test-double-vlen2
2480 [19462] libc: Glibc failed to build with -Os
2481 [19465] math: Wrong code with -Os
2482 [19466] time: time/tst-mktime2.c is compiled into an infinite loop with
2484 [19467] string: Fast_Unaligned_Load needs to be enabled for Excavator core
2486 [19475] libc: Glibc 2.22 doesn't build on sparc [PATCH]
2487 [19486] math: S390: Math tests fail with "Exception Inexact set".
2488 [19529] libc: [ARM]: FAIL: stdlib/tst-makecontext
2489 [19550] libc: [mips] mmap negative offset handling inconsistent with other
2491 [19590] math: Fail to build shared objects that use libmvec.so functions.
2495 * The following bugs are resolved with this release:
2497 438, 2981, 4719, 6544, 6792, 11216, 12836, 13028, 13064, 13151, 13152,
2498 14094, 14113, 14292, 14841, 14906, 14958, 15319, 15467, 15790, 15969,
2499 16159, 16339, 16350, 16351, 16352, 16353, 16361, 16512, 16526, 16538,
2500 16559, 16560, 16704, 16783, 16850, 17053, 17090, 17195, 17269, 17293,
2501 17322, 17403, 17475, 17523, 17542, 17569, 17581, 17588, 17596, 17620,
2502 17621, 17628, 17631, 17692, 17711, 17715, 17776, 17779, 17792, 17833,
2503 17836, 17841, 17912, 17916, 17930, 17932, 17944, 17949, 17964, 17965,
2504 17967, 17969, 17977, 17978, 17987, 17991, 17996, 17998, 17999, 18007,
2505 18019, 18020, 18029, 18030, 18032, 18034, 18036, 18038, 18039, 18042,
2506 18043, 18046, 18047, 18049, 18068, 18078, 18080, 18093, 18100, 18104,
2507 18110, 18111, 18116, 18125, 18128, 18134, 18138, 18185, 18196, 18197,
2508 18206, 18210, 18211, 18217, 18219, 18220, 18221, 18234, 18244, 18245,
2509 18247, 18287, 18319, 18324, 18333, 18346, 18371, 18383, 18397, 18400,
2510 18409, 18410, 18412, 18418, 18422, 18434, 18444, 18457, 18468, 18469,
2511 18470, 18479, 18483, 18495, 18496, 18497, 18498, 18502, 18507, 18508,
2512 18512, 18513, 18519, 18520, 18522, 18527, 18528, 18529, 18530, 18532,
2513 18533, 18534, 18536, 18539, 18540, 18542, 18544, 18545, 18546, 18547,
2514 18549, 18553, 18557, 18558, 18569, 18583, 18585, 18586, 18592, 18593,
2515 18594, 18602, 18612, 18613, 18619, 18633, 18635, 18641, 18643, 18648,
2516 18657, 18676, 18694, 18696, 18887.
2518 * Cache information can be queried via sysconf() function on s390 e.g. with
2519 _SC_LEVEL1_ICACHE_SIZE as argument.
2521 * A buffer overflow in gethostbyname_r and related functions performing DNS
2522 requests has been fixed. If the NSS functions were called with a
2523 misaligned buffer, the buffer length change due to pointer alignment was
2524 not taken into account. This could result in application crashes or,
2525 potentially arbitrary code execution, using crafted, but syntactically
2526 valid DNS responses. (CVE-2015-1781)
2528 * The time zone file parser has been made more robust against crafted time
2529 zone files, avoiding heap buffer overflows related to the processing of
2530 the tzh_ttisstdcnt and tzh_ttisgmtcnt fields, and a stack overflow due to
2531 large time zone data files. Overly long time zone specifiers in the TZ
2532 variable no longer result in stack overflows and crashes.
2534 * A powerpc and powerpc64 optimization for TLS, similar to TLS descriptors
2535 for LD and GD on x86 and x86-64, has been implemented. You will need
2536 binutils-2.24 or later to enable this optimization.
2538 * Character encoding and ctype tables were updated to Unicode 7.0.0, using
2539 new generator scripts contributed by Pravin Satpute and Mike FABIAN (Red
2540 Hat). These updates cause user visible changes, such as the fix for bug
2543 * CVE-2014-8121 The NSS backends shared internal state between the getXXent
2544 and getXXbyYY NSS calls for the same database, causing a denial-of-service
2545 condition in some applications.
2547 * Added vector math library named libmvec with the following vectorized x86_64
2548 implementations: cos, cosf, sin, sinf, sincos, sincosf, log, logf, exp, expf,
2550 The library can be disabled with --disable-mathvec. Use of the functions is
2551 enabled with -fopenmp -ffast-math starting from -O1 for GCC version >= 4.9.0.
2552 Shared library libmvec.so is linked in as needed when using -lm (no need to
2553 specify -lmvec explicitly for not static builds).
2554 Visit <https://sourceware.org/glibc/wiki/libmvec> for detailed information.
2556 * A new fmemopen implementation has been added with the goal of POSIX
2557 compliance. The new implementation fixes the following long-standing
2558 issues: BZ#6544, BZ#11216, BZ#12836, BZ#13151, BZ#13152, and BZ#14292. The
2559 old implementation is still present for use be by existing binaries.
2561 * The 32-bit sparc sigaction ABI was inadvertently broken in the 2.20 and 2.21
2562 releases. It has been fixed to match 2.19 and older, but binaries built
2563 against 2.20 and 2.21 might need to be recompiled. See BZ#18694.
2565 * Port to Native Client running on ARMv7-A (--host=arm-nacl).
2566 Contributed by Roland McGrath (Google).
2568 * The header <regexp.h> is deprecated, and will be removed in a future
2569 release. Use of this header will trigger a deprecation warning.
2570 Application developers should update their code to use <regex.h> instead.
2572 This header was formerly part of SUS, but was deprecated in 1994 and
2573 removed from the standard in 2001. Also, the glibc implementation
2574 leaks memory. See BZ#18681 for more details.
2578 * The following bugs are resolved with this release:
2580 6652, 10672, 12674, 12847, 12926, 13862, 14132, 14138, 14171, 14498,
2581 15215, 15378, 15884, 16009, 16418, 16191, 16469, 16576, 16617, 16618,
2582 16619, 16657, 16740, 16857, 17192, 17266, 17273, 17344, 17363, 17370,
2583 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522, 17555,
2584 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585, 17589,
2585 17594, 17601, 17608, 17616, 17625, 17630, 17633, 17634, 17635, 17647,
2586 17653, 17657, 17658, 17664, 17665, 17668, 17682, 17702, 17717, 17719,
2587 17722, 17723, 17724, 17725, 17732, 17733, 17744, 17745, 17746, 17747,
2588 17748, 17775, 17777, 17780, 17781, 17782, 17791, 17793, 17796, 17797,
2589 17801, 17803, 17806, 17834, 17844, 17848, 17868, 17869, 17870, 17885,
2592 * CVE-2015-1472 CVE-2015-1473 Under certain conditions wscanf can allocate
2593 too little memory for the to-be-scanned arguments and overflow the
2594 allocated buffer. The implementation now correctly computes the required
2595 buffer size when using malloc, and switches to malloc from alloca as
2598 * A new semaphore algorithm has been implemented in generic C code for all
2599 machines. Previous custom assembly implementations of semaphore were
2600 difficult to reason about or ensure that they were safe. The new version
2601 of semaphore supports machines with 64-bit or 32-bit atomic operations.
2602 The new semaphore algorithm is used by sem_init, sem_open, sem_post,
2603 sem_wait, sem_timedwait, sem_trywait, and sem_getvalue.
2605 * Port to Altera Nios II has been contributed by Mentor Graphics.
2607 * Optimized strcpy, stpcpy, strncpy, stpncpy, strcmp, and strncmp
2608 implementations for powerpc64/powerpc64le.
2609 Implemented by Adhemerval Zanella (IBM).
2611 * Added support for TSX lock elision of pthread mutexes on powerpc32, powerpc64
2612 and powerpc64le. This may improve lock scaling of existing programs on
2613 HTM capable systems. The lock elision code is only enabled with
2614 --enable-lock-elision=yes. Also, the TSX lock elision implementation for
2615 powerpc will issue a transaction abort on every syscall to avoid side
2616 effects being visible outside transactions.
2618 * Optimized strcpy, stpcpy, strchrnul and strrchr implementations for
2619 AArch64. Contributed by ARM Ltd.
2621 * i386 memcpy functions optimized with SSE2 unaligned load/store.
2623 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
2624 under certain input conditions resulting in the execution of a shell for
2625 command substitution when the application did not request it. The
2626 implementation now checks WRDE_NOCMD immediately before executing the
2627 shell and returns the error WRDE_CMDSUB as expected.
2629 * CVE-2012-3406 printf-style functions could run into a stack overflow when
2630 processing format strings with a large number of format specifiers.
2632 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
2633 infinite loop if the DNS response contained a PTR record of an unexpected
2636 * The minimum GCC version that can be used to build this version of the GNU
2637 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
2638 still be used to compile programs using the GNU C Library.
2640 * The GNU C Library is now built with -Werror by default. This can be
2641 disabled by configuring with --disable-werror.
2643 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
2645 * The obsolete sigvec function has been removed. This was the original
2646 4.2BSD interface that inspired the POSIX.1 sigaction interface, which
2647 programs have been using instead for about 25 years. Of course, ABI
2648 compatibility for old binaries using sigvec remains intact.
2650 * Merged gettext 0.19.3 into the intl subdirectory. This fixes building
2651 with newer versions of bison.
2653 * Support for MIPS o32 FPXX, FP64A and FP64 ABI Extensions.
2654 The original MIPS o32 hard-float ABI requires an FPU where double-precision
2655 registers overlay two consecutive single-precision registers. MIPS32R2
2656 introduced a new FPU mode (FR=1) where double-precision registers extend the
2657 corresponding single-precision registers which is incompatible with the
2658 o32 hard-float ABI. The MIPS SIMD ASE and the MIPSR6 architecture both
2659 require the use of FR=1 making a transition necessary. New o32 ABI
2660 extensions enable users to migrate over time from the original o32 ABI
2661 through to the updated o32 FP64 ABI. To achieve this the dynamic linker now
2662 tracks the ABI of any loaded object and verifies that new objects are
2663 compatible. Mode transitions will also be requested as required and
2664 unsupportable objects will be rejected. The ABI checks include both soft and
2665 hard float ABIs for o32, n32 and n64.
2667 GCC 5 with GNU binutils 2.25 onwards:
2668 It is strongly recommended that all o32 system libraries are built using the
2669 new o32 FPXX ABI (-mfpxx) to facilitate the transition as this is compatible
2670 with the original and all new o32 ABI extensions. Configure a MIPS GCC
2671 compiler using --with-fp-32=xx to set this by default.
2675 * The following bugs are resolved with this release:
2677 6804, 9894, 11505, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347,
2678 15514, 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198,
2679 16275, 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447,
2680 16516, 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600,
2681 16609, 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639,
2682 16642, 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689,
2683 16695, 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739,
2684 16740, 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791,
2685 16796, 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849,
2686 16854, 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912,
2687 16915, 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958,
2688 16965, 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022,
2689 17031, 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078,
2690 17079, 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150,
2691 17153, 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
2693 * Reverted change of ABI data structures for s390 and s390x:
2694 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
2695 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
2696 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
2697 are preserved pointing straight to the same implementation as the old ones.
2698 Given that, new callers will simply provide a too-big buffer to these
2699 functions. Any applications/libraries out there that embed jmp_buf or
2700 ucontext_t in an ABI-relevant data structure that have already been rebuilt
2701 against 2.19 headers will have to rebuilt again. This is necessary in any
2702 case to revert the breakage in their ABI caused by the glibc change.
2704 * Support for file description locks is added to systems running the
2705 Linux kernel. The standard file locking interfaces are extended to
2706 operate on file descriptions, not file descriptors, via the use of
2707 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
2708 are associated with an open file instead of a process.
2710 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
2712 * The minimum Linux kernel version that this version of the GNU C Library
2713 can be used with is 2.6.32.
2715 * Running the testsuite no longer terminates as soon as a test fails.
2716 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
2717 with PASS or FAIL lines for individual tests. A summary of the results is
2718 printed, including a list of failing lists, and "make check" exits with
2719 error status if there were any unexpected failures. "make check
2720 stop-on-test-failure=y" may be used to keep the old behavior.
2722 * The am33 port, which had not worked for several years, has been removed
2725 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
2726 supported; they now act the same as _DEFAULT_SOURCE (but generate a
2727 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
2728 conflicted with POSIX (support for which was removed in 2.19), the
2729 interfaces those macros enabled remain available when compiling with
2730 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
2731 test macros defined.
2733 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
2735 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
2736 This may improve lock scaling of existing programs on TX capable systems.
2737 The lock elision code is only built with --enable-lock-elision=yes and
2738 then requires a GCC version supporting the TX builtins. With lock elision
2739 default mutexes are elided via __builtin_tbegin, if the cpu supports
2740 transactions. By default lock elision is not enabled and the elision code
2743 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
2744 copy the path argument. This allowed programs to cause posix_spawn to
2745 deference a dangling pointer, or use an unexpected pathname argument if
2746 the string was modified after the posix_spawn_file_actions_addopen
2749 * All supported architectures now use the main glibc sysdeps directory
2750 instead of some being in a separate "ports" directory (which was
2751 distributed separately before glibc 2.17).
2753 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
2754 On configurations that support it (all Linux configurations), it's now
2755 used regardless of the --enable-add-ons switch to configure. It is no
2756 longer possible to build such configurations without pthreads support.
2758 * Locale names, including those obtained from environment variables (LANG
2759 and the LC_* variables), are more tightly checked for proper syntax.
2760 setlocale will now fail (with EINVAL) for locale names that are overly
2761 long, contain slashes without starting with a slash, or contain ".." path
2762 components. (CVE-2014-0475) Previously, some valid locale names were
2763 silently replaced with the "C" locale when running in AT_SECURE mode
2764 (e.g., in a SUID program). This is no longer necessary because of the
2767 * On x86-64, the dynamic linker's lazy-binding support is now compatible
2768 with application code using Intel MPX instructions. (With all previous
2769 versions, the MPX register state could be clobbered when making calls
2770 into or out of a shared library.) Note that while the new dynamic
2771 linker is compatible with all known x86 hardware whether or not it
2772 supports Intel MPX, some x86 instruction-set emulators might fail to
2773 handle the new instruction encodings. This is known to affect Valgrind
2774 versions up through 3.9 (but will be fixed in the forthcoming 3.10
2775 release), and might affect other tools that do instruction emulation.
2777 * Support for loadable gconv transliteration modules has been removed.
2778 The support for transliteration modules has been non-functional for
2779 over a decade, and the removal is prompted by security defects. The
2780 normal gconv conversion modules are still supported. Transliteration
2781 with //TRANSLIT is still possible, and the //IGNORE specifier
2782 continues to be supported. (CVE-2014-5119)
2784 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
2785 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
2786 resulting a denial-of-service security vulnerability in applications which
2787 use functions related to iconv. (CVE-2014-6040)
2791 * The following bugs are resolved with this release:
2793 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
2794 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
2795 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
2796 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
2797 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
2798 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
2799 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
2800 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
2801 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
2802 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
2803 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
2804 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
2805 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
2806 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
2807 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
2808 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
2809 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
2810 16431, 16453, 16474, 16506, 16510, 16529
2812 * Slovenian translations for glibc messages have been contributed by the
2813 Translation Project's Slovenian team of translators.
2815 * The public headers no longer use __unused nor __block. This change is to
2816 support compiling programs that are derived from BSD sources and use
2817 __unused internally, and to support compiling with Clang's -fblock
2818 extension which uses __block.
2820 * CVE-2012-4412 The strcoll implementation caches indices and rules for
2821 large collation sequences to optimize multiple passes. This cache
2822 computation may overflow for large collation sequences and may cause a
2823 stack or buffer overflow. This is now fixed to use a slower algorithm
2824 which does not use a cache if there is an integer overflow.
2826 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
2827 rules for large collation sequences to optimize multiple passes and falls
2828 back to alloca if malloc fails, resulting in a possible stack overflow.
2829 The implementation now falls back to an uncached collation sequence lookup
2832 * CVE-2013-4788 The pointer guard used for pointer mangling was not
2833 initialized for static applications resulting in the security feature
2834 being disabled. The pointer guard is now correctly initialized to a
2835 random value for static applications. Existing static applications need
2836 to be recompiled to take advantage of the fix (bug 15754).
2838 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
2839 to the d_name member of struct dirent, or omit the terminating NUL
2840 character. (Bugzilla #14699).
2842 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
2843 aligned_alloc functions could allocate too few bytes or corrupt the
2844 heap when passed very large allocation size values (Bugzilla #15855,
2847 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
2848 for AF_INET6 has been fixed (Bugzilla #16072).
2850 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
2851 pap_CW, quz_PE, the_NP.
2853 * Substantially revised locales: gd_GB, ht_HT
2855 * The LC_ADDRESS field was updated to support country_car for almost all
2858 * ISO 1427 definitions were updated.
2860 * ISO 3166 definitions were updated.
2862 * The localedef utility now supports --big-endian and --little-endian
2863 command-line options to generate locales for a different system from that
2864 for which the C library was built.
2866 * Binary locale files now only depend on the endianness of the system for
2867 which they are generated and not on other properties of that system. As a
2868 consequence, binary files generated with new localedef may be incompatible
2869 with old versions of the GNU C Library, and binary files generated with
2870 old localedef may be incompatible with this version of the GNU C Library,
2871 in the following circumstances:
2873 + Locale files may be incompatible on m68k systems.
2875 + Locale archive files (but not separate files for individual locales) may
2876 be incompatible on systems where plain "char" is signed.
2878 * The configure option --disable-versioning has been removed. Builds with
2879 --disable-versioning had not worked for several years.
2881 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
2882 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
2884 * SystemTap probes for malloc have been introduced.
2886 * SystemTap probes for slow multiple precision fallback paths of
2887 transcendental functions have been introduced.
2889 * Support for powerpc64le has been added.
2891 * The soft-float powerpc port now supports e500 processors.
2893 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
2895 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
2896 set of header declarations that are enabled by default, even when other
2897 feature test macros or compiler options such as -std=c99 would otherwise
2898 disable some of those declarations.
2900 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
2901 conflict with POSIX. The libbsd-compat library (which was a dummy library
2902 that did nothing) has also been removed.
2904 * Preliminary documentation about Multi-Thread, Async-Signal and
2905 Async-Cancel Safety has been added.
2907 * Change of ABI data structures for s390 and s390x:
2908 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
2909 allow for future hardware extensions. All library functions that accept or
2910 return these structures were versioned in order to provide backwards
2911 compatibility with existing code. However, not all cases can be handled
2912 with interface versioning. If an application embeds either structure into
2913 another structure and that structure is passed to another compilation unit
2914 which expects the newer larger-sized object then any access to the new
2915 fields will result in undefined behaviour. Similarly any access to fields
2916 that were moved by the enlarging of the structures will cause undefined
2917 behaviour. To fix the undefined behaviour all objects that are part of the
2918 final in-memory image must agree on the size of structures, and this may
2919 require recompilation.
2923 * The following bugs are resolved with this release:
2925 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
2926 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
2927 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
2928 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14941,
2929 14952, 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003,
2930 15006, 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062,
2931 15078, 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234,
2932 15283, 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335,
2933 15336, 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381,
2934 15394, 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424,
2935 15426, 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485,
2936 15488, 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577,
2937 15583, 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711,
2940 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
2941 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
2942 Distributions can re-enable building and using pt_chown via the new configure
2943 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
2944 considerable security risks and should only be used if the distribution
2945 understands and accepts the risks.
2947 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
2950 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
2951 fixed (Bugzilla #15330).
2953 * Add support for calling C++11 thread_local object destructors on thread
2954 and program exit. This needs compiler support for offloading C++11
2955 destructor calls to glibc.
2957 * Improved worst case performance of libm functions with double inputs and
2960 * Support for priority inherited mutexes in pthread condition variables on
2961 non-x86 architectures.
2963 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
2965 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
2967 * Optimized string functions for ARM. Implemented by Will Newton and
2970 * Optimized libm functions for SPARC. Implemented by David S. Miller.
2972 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
2975 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
2976 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
2978 * Added a benchmark framework to track performance of functions in glibc.
2980 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
2981 It is based on draft TS 18661 and currently enabled as a GNU extension.
2983 * On Linux, the clock function now uses the clock_gettime system call
2984 for improved precision, rather than old times system call.
2986 * Added support for version-3 tz format files. This is needed when using
2987 the tz database release 2013e or later, and affects a few unusual cases --
2988 currently only TZ='America/Godthab' for time stamps after 2037.
2990 * Added new API functions pthread_getattr_default_np and
2991 pthread_setattr_default_np to get and set the default pthread
2992 attributes of a process.
2994 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
2995 This may improve lock scaling of existing programs on TSX capable systems.
2996 When the --enable-lock-elision=yes parameter is specified at configure
2997 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
3000 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
3001 availability). Implemented by Ryan S. Arnold.
3003 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
3007 * The following bugs are resolved with this release:
3009 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
3010 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
3011 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
3012 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
3013 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
3014 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
3015 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
3016 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
3017 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
3018 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
3019 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
3020 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
3021 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
3022 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
3023 14879, 14889, 14893, 14898, 14914.
3025 * Optimization of memcpy for MIPS.
3027 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
3028 EMFILE has been fixed (Bugzilla #14889).
3030 * The add-on ports collection is now distributed in the "ports" subdirectory
3031 of the main GNU C Library distribution, rather than separately.
3033 * Port to ARM AArch64 contributed by Linaro.
3035 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
3036 Optimized versions of memcpy, memset, and memcmp added for System z10 and
3038 Implemented by Andreas Krebbel.
3040 * The new function secure_getenv allows secure access to the environment,
3041 returning NULL if running in a SUID/SGID process. This function replaces
3042 the internal function __secure_getenv.
3044 * SystemTap static probes have been added into the dynamic linker.
3045 Implemented by Gary Benson.
3047 * Optimizations of string functions strstr, strcasestr and memmem.
3048 Implemented by Maxim Kuvyrkov.
3050 * The minimum Linux kernel version that this version of the GNU C Library
3051 can be used with is 2.6.16.
3053 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
3054 powerpc POWER7. Implemented by Will Schmidt.
3056 * New configure option --disable-nscd builds the C library such that it
3057 never attempts to contact the Name Service Caching Daemon (nscd).
3058 New configure option --disable-build-nscd avoids building nscd itself;
3059 this is the default if --disable-nscd is used.
3061 * Improved support for cross-compilation, including cross-testing and
3062 bootstrap builds without a previously built glibc.
3064 * Several testsuite tests are now able to test multiple IFUNC variants of an
3065 interface, rather than just testing the one that would be chooen by
3068 * New configure options --with-bugurl and --with-pkgversion, for
3069 distributors to use to embed their bug-reporting and package version
3070 information in --help and --version output.
3072 * The ttyname and ttyname_r functions on Linux now fall back to searching for
3073 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
3074 allows creation of chroots without the procfs mounted on /proc.
3076 * The `crypt' function now fails if passed salt bytes that violate the
3077 specification for those values. On Linux, the `crypt' function will
3078 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
3079 enabled, and fail on encrypted strings using the MD5 or DES algorithm
3080 when the mode is enabled.
3082 * The `clock_*' suite of functions (declared in <time.h>) is now available
3083 directly in the main C library. Previously it was necessary to link with
3084 -lrt to use these functions. This change has the effect that a
3085 single-threaded program that uses a function such as `clock_gettime' (and
3086 is not linked with -lrt) will no longer implicitly load the pthreads
3087 library at runtime and so will not suffer the overheads associated with
3088 multi-thread support in other code such as the C++ runtime library.
3090 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
3095 * The following bugs are resolved with this release:
3097 174, 208, 350, 369, 411, 706, 766, 2074, 2541, 2547, 2548, 2550, 2551,
3098 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678, 3335,
3099 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596, 4822,
3100 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794, 6884,
3101 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135, 10140,
3102 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 10882, 11174,
3103 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
3104 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
3105 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
3106 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
3107 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
3108 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
3109 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
3110 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
3111 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
3112 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
3113 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
3114 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
3115 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
3116 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
3117 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
3118 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
3121 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
3122 configuring glibc with:
3123 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
3124 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
3125 Implemented by H.J. Lu.
3129 + define static_assert
3131 + do not declare gets
3133 + declare at_quick_exit and quick_exit also for ISO C11
3135 + aligned_alloc. NB: The code is deliberately allows the size parameter
3136 to not be a multiple of the alignment. This is a moronic requirement
3137 in the standard but it is only a requirement on the caller, not the
3140 + timespec_get added
3142 + uchar.h support added
3144 + CMPLX, CMPLXF, CMPLXL added
3146 Implemented by Ulrich Drepper.
3148 * Support for the IA-64 has been moved to ports.
3150 * Remove support for anything but ELF binary format
3152 * Checking versions of poll, ppoll added.
3153 Implemented by Ulrich Drepper.
3155 * More generic and 64-bit performance optimizations to math functions.
3156 Implemented by Ulrich Drepper.
3158 * New configure option --enable-obsolete-rpc makes the deprecated RPC
3159 headers and functions available at compile time as they were before
3160 version 2.14. This option will be removed at some time in the future
3161 after the TI-RPC library becomes fully sufficient for the needs of
3162 existing applications.
3164 * Compatibility code for Linux kernel versions before 2.4 has been removed.
3165 Note that glibc is not expected to work with any Linux kernel version
3168 * New header <sys/auxv.h> and function getauxval allowing easy access to
3169 the AT_* key-value pairs passed from the Linux kernel. The header also
3170 defines the HWCAP_* bits associated with the AT_HWCAP key.
3172 * New locales: mag_IN
3174 * New configure option --enable-systemtap builds SystemTap static probes
3175 into libc for setjmp and longjmp and into libpthread for various operations.
3176 So far the setjmp/longjmp probes and some of the libpthread probes are
3177 provided only for i*86 and x86_64.
3178 Implemented by Roland McGrath and Rayson Ho.
3180 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
3182 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
3185 * More optimized functions for SPARC. Implemented by David S. Miller.
3187 * Improved support for cross-compilation, especially bootstrap builds
3188 without a previously built glibc.
3190 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
3191 Chris Metcalf from Tilera.
3193 * Support for the old ARM ABI has been removed from ports. Only the EABI is
3194 now supported for ARM processors.
3196 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
3197 as the name of the dynamic linker, to distinguish it from the
3198 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
3200 * Support for CRIS has been removed from ports.
3202 * A new class of installed header has been documented for low-level
3203 platform-specific functionality. PowerPC added the first instance with a
3204 function to provide time base register access. Contributed by Tulio
3205 Magno Quites Machado Filho.
3207 * ix86 configurations now install header files that are consistent with
3208 what x86-64 configurations install. These same header files can be used
3209 for -m32, -m64, or -mx32 builds.
3210 Contributed by H.J. Lu.
3212 * Math library bug fixes. A thorough audit of all open math library bugs was
3213 conducted by Joseph Myers. Significant progress was made on many math
3214 library bugs resulting in more accurate exceptions and function results.
3215 Many thanks to all those that contributed including Andreas Jaeger for his
3216 patch review and work on the x87 trigonometric instruction issues.
3218 * Timezone data is no longer installed. Timezone-related binaries and scripts
3219 will continue to be installed. Users should obtain their timezone data from
3220 their distribution provider or from the tzdata package at
3221 <ftp://munnari.oz.au/pub/>.
3225 * The following bugs are resolved with this release:
3227 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
3228 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
3229 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
3230 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
3231 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
3232 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
3233 13484, 13506, 13515, 13523, 13524, 13538, 13540
3235 * New program pldd to list loaded object of a process
3236 Implemented by Ulrich Drepper.
3238 * Add nss_db support back to glibc. No more dependency on Berkeley db
3239 and support for initgroups lookups.
3240 Implemented by Ulrich Drepper.
3242 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
3243 Contributed by HJ Lu.
3245 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
3246 Contributed by HJ Lu.
3248 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
3249 on x86-32 and x86-64.
3250 Contributed by Liubov Dmitrieva.
3252 * Optimized strchr and strrchr for SSE on x86-32.
3253 Contributed by Liubov Dmitrieva.
3255 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
3256 for x86-64 and x86-32.
3257 Contributed by Liubov Dmitrieva.
3259 * New interfaces: scandirat, scandirat64
3260 Implemented by Ulrich Drepper.
3262 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
3263 Implemented by Ulrich Drepper.
3265 * nscd now also caches the netgroup database.
3266 Implemented by Ulrich Drepper.
3268 * Integrate libm with gcc's -ffinite-math-only option.
3269 Implemented by Ulrich Drepper.
3271 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
3272 to math functions. Implemented by Ulrich Drepper.
3274 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
3275 Implemented by Ulrich Drepper.
3277 * New Linux interfaces: process_vm_readv, process_vm_writev
3279 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
3280 Implemented by Ulrich Drepper.
3282 * Optimized nearbyint and strcasecmp for PPC.
3283 Implemented by Adhemerval Zanella.
3285 * New locales: bho_IN, unm_US, es_CU, ta_LK
3289 * The following bugs are resolved with this release:
3291 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
3292 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
3293 11781, 11799, 11820, 11837, 11857, 11884, 11892, 11895, 11901, 11945,
3294 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
3295 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
3296 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
3297 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
3298 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
3299 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
3300 12795, 12811, 12813, 12814, 12841
3302 * The RPC implementation in libc is obsoleted. Old programs keep working
3303 but new programs cannot be linked with the routines in libc anymore.
3304 Programs in need of RPC functionality must be linked against TI-RPC.
3305 The TI-RPC implementation is IPv6 enabled and there are other benefits.
3307 Visible changes of this change include (obviously) the inability to link
3308 programs using RPC functions without referencing the TI-RPC library and the
3309 removal of the RPC headers from the glibc headers.
3310 Implemented by Ulrich Drepper.
3312 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
3313 syncfs, setns, sendmmsg
3315 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
3316 yue_HK, lij_IT, mhr_RU
3318 * New encodings: CP770, CP771, CP772, CP773, CP774
3320 * New program sotruss to trace calls through PLTs
3321 Implemented by Ulrich Drepper.
3323 * The malloc hook implementation is marked deprecated and will be removed
3324 from the default implementation in the next version. The design never
3325 worked ever since the introduction of threads. Even programs which do
3326 not create threads themselves can use multiple threads created internally.
3330 * The following bugs are resolved with this release:
3332 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
3333 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
3334 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
3335 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
3338 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
3340 * POWER7 optimizations: memset, memcmp, strncmp
3342 * New optimized string functions for x86-64: strnlen (SSE2),
3343 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
3344 Implemented by Ulrich Drepper.
3348 * The following bugs are resolved with this release:
3350 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
3351 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
3352 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
3353 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
3354 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
3355 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
3356 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
3357 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
3359 * New interfaces: pthread_getname_np, pthread_setname_np
3361 * New Linux interface: recvmmsg
3363 * STT_GNU_IFUNC implemented for Sparc by David Miller.
3365 * The dynamic linker now recognizes supported ABI versions from the
3366 EI_ABIVERSION field in the ELF header.
3367 Implemented by Ulrich Drepper.
3369 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
3370 will not be used to fill in password fields in the passwd.byname replies.
3371 Instead it is used to synthesize the shadow.byname table, should it be
3372 missing. This is a useful mode in some installations involving Solaris.
3373 Implemented by Ulrich Drepper.
3375 * New locales: kok_IN, sq_MK, cv_RU
3379 * The following bugs are resolved with this release:
3381 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
3382 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
3383 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
3384 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
3385 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
3386 10789, 10817, 10823, 10840, 10847
3388 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
3390 Implemented by Ulrich Drepper.
3392 * Checking version of longjmp added that fails if an uninitialized stack
3393 frame would be created. Implemented by Ulrich Drepper.
3395 * STT_GNU_IFUNC is now supported in static executables.
3396 Implemented by H.J. Lu.
3398 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
3400 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
3401 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
3402 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
3403 Contributed by H.J. Lu.
3405 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
3406 Implemented by Ulrich Drepper.
3408 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
3410 Contributed by H.J. Lu.
3412 * Support for fma instruction in AVX on x86-64.
3413 Implemented by H.J. Lu and Ulrich Drepper.
3415 * AVX support in x86-64 auditing support in ld.so.
3416 Implemented by H.J. Lu.
3418 * STB_GNU_UNIQUE support added.
3419 Implemented by Ulrich Drepper.
3421 * Implement second fallback mode for optimized DNS lookup for even more
3422 broken environments. If two requests from the same port are not
3423 handled correctly close the socket and open a new one before sending
3424 the second request. The 'single-request-reopen' option in /etc/resolv.conf
3425 can be used to select this mode right away, instead of rediscovering the
3426 necessity is every process again.
3427 Implemented by Ulrich Drepper.
3429 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
3430 Implemented by Adam Tkac.
3432 * Optimized iconv conversions for S390x.
3433 Implemented by Andreas Krebbel.
3435 * Using condvars with PI mutexes is now more efficient due to kernel
3436 support for requeueing to PI futexes. NPTL support added for x86-64.
3437 Implemented by Ulrich Drepper.
3439 * New locales: ps_AF, my_MM
3443 * The following bugs are resolved with this release:
3445 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
3446 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
3447 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
3448 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
3449 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
3451 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
3452 Implemented by Ulrich Drepper.
3454 * New Linux interfaces: accept4, fallocate, fallocate64.
3455 Implemented by Ulrich Drepper.
3457 * Correct declarations of string function when used in C++ code. This
3458 could lead to compile errors for invalid C++ code.
3460 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
3463 * New POSIX 2008 interface: psiginfo
3464 Implemented by Ulrich Drepper.
3466 * New ISO C++1x interfaces: quick_exit, at_quick_exit
3467 Implemented by Ulrich Drepper.
3469 * Support for selecting between multiple function definitions at runtime
3470 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
3472 * The libcrypt library can now use the hash function implementations in
3473 NSS. Implemented by Ulrich Drepper.
3475 * The malloc implementation can be compiled to be less memory efficient
3476 but higher performing in multi-threaded programs.
3477 Implemented by Ulrich Drepper.
3479 * New locales: nan_TW@latin, ks_IN
3481 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
3482 Implemented by Ulrich Drepper.
3484 * Extended printf hook support. It is possible to use user-defined types
3485 and extend existing format specifiers.
3486 Implemented by Ulrich Drepper.
3488 * Handling for group shadow files has been added.
3489 Implemented by Ulrich Drepper.
3491 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
3492 servers (the case, e.g., for some people using the built-in DNS
3493 server in ADSL modems/routers). There is a once-per-process timeout
3494 in case of a broken server. To avoid it, users can run nscd or put
3495 'options single-request' in /etc/resolv.conf.
3496 Implemented by Ulrich Drepper.
3500 * The following bugs are resolved with this release:
3502 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
3503 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
3504 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
3505 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
3506 6968, 6974, 6980, 6995, 7008, 7009, 7029
3508 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
3509 up at the same time. Implemented by Ulrich Drepper.
3511 * TLS descriptors for LD and GD on x86 and x86-64.
3512 Implemented by Alexandre Oliva.
3514 * getaddrinfo now handles DCCP and UDPlite.
3515 Implemented by Ulrich Drepper.
3517 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
3518 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
3519 Implemented by Ulrich Drepper.
3521 * New implementation of memmem, strstr, and strcasestr which is O(n).
3522 Implemented by Eric Blake.
3524 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
3526 * Implement "e" option for popen to open file descriptor with the
3527 close-on-exec flag set. Implemented by Ulrich Drepper.
3529 * Implement "b" mode for fmemopen. In this mode writes writes don't
3530 implicitly add a NUL byte and seeks from the end of the buffer really
3531 use the buffer end, not the string length as the basis.
3532 Implemented by Ulrich Drepper.
3534 * Many functions, exported and internal, now atomically set the close-on-exec
3535 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
3537 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
3539 Implemented by Pravin Satpute.
3541 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
3545 * The following bugs are resolved with this release:
3547 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
3548 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
3549 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
3550 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
3551 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
3552 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
3553 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
3555 * New locales: bo_CN, bo_IN, shs_CA.
3557 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
3559 * Sorting rules for some Indian languages (Devanagari and Gujarati).
3560 Implemented by Pravin Satpute.
3562 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
3564 * nscd caches now all timeouts for DNS entries
3565 Implemented by Ulrich Drepper.
3567 * nscd is more efficient and wakes up less often.
3568 Implemented by Ulrich Drepper.
3570 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
3571 vdprintf, and obstack_vprintf.
3572 Implemented by Jakub Jelinek.
3574 * Faster memset for x86-64.
3575 Implemented by Harsha Jagasia and H.J. Lu.
3577 * Faster memcpy on x86.
3578 Implemented by Ulrich Drepper.
3580 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
3581 Implemented by Ulrich Drepper.
3583 * Faster sqrt and sqrtf implemention for some PPC variants.
3584 Implemented by Steven Munroe.
3588 * The following bugs are resolved with this release:
3590 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
3591 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
3592 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
3593 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
3594 5071, 5103, 5104, 5112, 5113, 5184, 5186
3596 * More checking functions: fread, fread_unlocked, open*, mq_open.
3597 Implemented by Jakub Jelinek and Ulrich Drepper.
3599 * Extend fortification to C++. Implemented by Jakub Jelinek.
3601 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
3602 by not recognizing 'a' as a modifier when those specs are requested.
3603 Implemented by Jakub Jelinek.
3605 * PPC optimizations to math and string functions.
3606 Implemented by Steven Munroe.
3608 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
3609 options to be passed. Implemented by Ulrich Drepper.
3611 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
3613 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
3614 Implemented by Ulrich Drepper.
3616 * Handle private futexes in the NPTL implementation.
3617 Implemented by Jakub Jelinek and Ulrich Drepper.
3619 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
3620 Implemented by Roland McGrath and Ulrich Drepper.
3622 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
3624 * SHA-256 and SHA-512 based password encryption.
3625 Implemented by Ulrich Drepper.
3627 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
3628 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
3631 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
3632 Implemented by Ulrich Drepper.
3636 * The following bugs are resolved with this release:
3638 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
3639 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
3640 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
3641 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
3642 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
3643 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
3644 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
3647 * New Linux interfaces: epoll_pwait, sched_getcpu.
3649 * New generic interfaces: strerror_l.
3651 * nscd can now cache the services database. Implemented by Ulrich Drepper.
3655 * The following bugs are resolved with this release:
3657 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
3658 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
3659 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
3660 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
3661 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
3662 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
3663 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
3664 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
3665 3225, 3251, 3252, 3253, 3273
3667 * For Linux, the sorting of addresses returned by getaddrinfo now also
3668 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
3669 Implemented by Ulrich Drepper.
3671 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
3672 Implemented by Ulrich Drepper.
3674 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
3676 * New iconv module for MIK. Contributed by Alexander Shopov.
3678 * For sites with broken group and/or passwd database, the auto-propagate
3679 option of nscd can prevent creating ID lookup entries from the results
3680 of a name lookup and vice versa. This usually is no problem but some
3681 site might have problems with the default behavior.
3682 Implemented by Ulrich Drepper.
3684 * Iterating over entire database in NIS can be slow. With the
3685 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
3686 to trade time for memory. The entire database will be read at once.
3687 Implemented by Ulrich Drepper.
3689 * The interfaces introduced in RFC 3542 have been implemented by
3692 * Support for the new ELF hash table format was added by Ulrich Drepper.
3694 * Support for priority inheritance mutexes added by Jakub Jelinek and
3697 * Support for priority protected mutexes added by Jakub Jelinek.
3699 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
3700 or_IN, csb_PL, fy_NL, sr_ME.
3704 * More overflow detection functions.
3706 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
3707 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
3709 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
3710 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
3711 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
3712 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
3713 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
3714 by Masahide Washizawa.
3716 * It is now possible to install audit libraries for the dynamic linker using
3717 LD_AUDIT. Implemented by Ulrich Drepper.
3719 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
3720 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
3721 For a libc and libpthread that works well on Linux 2.4 kernels, we
3722 recommend using the stable 2.3 branch.
3724 * The new function open_wmemstream acts like open_memstream,
3725 but uses a wchar_t wide character buffer.
3727 * The new function ppoll is an improved version of poll, similar to pselect.
3729 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
3730 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
3731 renameat, unlinkat, linkat, symlinkat, readlinkat.
3733 * New Linux kernel system calls: unshare,
3734 inotify_init, inotify_add_watch, inotify_rm_watch.
3736 * The euidaccess function is now also known by the alias eaccess,
3737 for compatibility with some other systems.
3739 * Timezone data updated to 2006b version.
3743 * The following bugs are resolved with this release:
3745 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
3746 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
3747 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
3748 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
3749 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
3750 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
3752 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
3754 * As of this release, GCC 4 can be used to compile the C Library.
3756 * Timezone data updated to 2005m version.
3760 * The following bugs are resolved with this release:
3762 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
3763 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
3764 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
3765 777, 787, 821, 822, 823, 825
3767 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
3771 * Support for RFC 3678. Real implementations exist only for Linux so far.
3772 Implemented by Ulrich Drepper.
3774 * nscd can now cache entries persistently. Expiring entries are reloaded.
3775 For speedups the cache can be shared in memory with client processes.
3776 Implemented by Ulrich Drepper.
3778 * nscd can now perform SELinux checks.
3779 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
3781 * getaddrinfo queries are now cached. Canonical name lookup is performed
3783 Implemented by Ulrich Drepper.
3785 * The nothrow function attribute is used when headers are used by gcc when
3786 compiling C code. This can avoid significant amounts of exception
3789 * The malloc functions perform more error checking and are stricter when
3790 it comes to reacting on errors. The default action is to terminate
3791 the process after showing an error message. Implemented by Ulrich Drepper.
3793 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
3794 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
3796 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
3797 namespaces using the new function dlmopen(). This feature is of course,
3798 like most other dynamic loading functionality, not available in statically
3799 linked applications. Implemented by Ulrich Drepper.
3801 * Low-overhead boundary checking variants of string and some stdio functions
3802 were added. These are to be used in conjunction with a gcc patch by
3803 Jakub Jelinek which adds calls to these functions if possible.
3804 Implemented by Jakub Jelinek and Ulrich Drepper.
3806 * Old code for several operating systems and machine architectures that
3807 have not been in working condition in a long time have been removed from
3808 the main source tree maintained by the GNU C Library's maintainers.
3809 These files are now reside in the separate `ports' source module
3810 that is usable as an add-on when building the library.
3814 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
3815 interrogate the dynamic linker, compatible with the Solaris interface.
3817 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
3818 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
3820 * getifaddrs now uses the netlink interface on Linux to get its information.
3821 Implemented by Thorsten Kukuk.
3823 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
3824 Implemented by Ulrich Drepper.
3826 * support for non-executable stacks on x86 has been added. Changes mostly
3829 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
3832 * getaddrinfo now performs destination address selection according to
3837 * Thread-safe interfaces for many functions that access locale data
3838 were added in version 2.3, but these features were omitted from NEWS.
3839 Many functions have variants with an `_l' suffix that take a `locale_t'
3840 object as a parameter rather than consulting the current locale.
3841 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
3842 create and maintain `locale_t' objects. Additionally, the new function
3843 `uselocale' sets "the current locale" (as used by functions not so
3844 parameterized) set for an individual thread. These features were added
3845 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
3847 * The functions getresuid, getresgid, setresuid, and setresgid, which
3848 have long been available on Linux, are now declared in <unistd.h>
3849 and are now also available on the Hurd.
3851 * ELF thread-local storage support (TLS) now works on x86-64.
3853 * The new dynamic string token $LIB is expanded in shared library names.
3854 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
3856 * Aldy Hernandez contributed complete software floating point support for
3857 PowerPC machines with no FPU.
3859 * fexecve is implemented on Linux.
3861 * The `btowc' function should work at least twice as fast due to
3862 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
3864 * With approriate thread add-ons cancelable functions are now implemented
3865 in libc.so as well. No need to call the function in libpthread. This
3866 change allowed to finally disable the incorrect and expensive handling
3867 of weak definition in ld.so.
3869 * Yet more PLT entries in libc.so have been removed. We finally arrived
3870 at the bare minimum. Startup times improved appropriately.
3872 * Support for the new Linux/x86 system call interface was added. The
3873 AT_SYSINFO auxiliary vector entry is recognized and handled.
3877 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
3880 * iconv (the program and the interface) now accepts empty names (excluding
3881 options like //TRANSLIT) to mean "use charset of current locale".
3883 * localedef can now transliterate characters in strings which are not in
3884 the provided charmap. The information from the input locale is used.
3886 * Prelinking support was added for ELF targets. This requires additional
3887 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
3889 * Read-only stdio streams now use mmap to speed up operation by eliminating
3890 copying and buffer underflows. To use add 'm' to the mode string of
3891 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
3893 * The malloc functions were completely rewritten by Wolfram Gloger based
3894 on Doug Lea's malloc-2.7.0.c.
3896 * Isamu Hasegawa contributed a completely new and POSIX-conformant
3897 implementation of regex.
3899 * Bruno Haible upgraded the iconv and locale implementation to support
3902 * Contents of the LC_* and LANG environment variables in the CEN style are
3903 not recognized anymore. It never was used. Change by Ulrich Drepper.
3905 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
3906 thread-local storage (TLS) ABI on some platforms.
3907 Changes by Ulrich Drepper. SH support by Kaz Kojima.
3909 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
3910 EUC-JISX0213, and TSCII.
3912 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
3913 BSD-compatible interface for getting all network interface addresses.
3914 Implementation for IPv4 by Roland McGrath.
3916 * Loading of locale data is faster due to the introduction of a locale
3917 archive. Implemented by Roland McGrath and Ulrich Drepper.
3919 * Startup times are significantly reduced by not using exported functions
3920 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
3923 * Steven Munroe contributed a port to PowerPC64/Linux.
3927 * The Hurd now uses the GNU libio implementation of stdio rather than the
3928 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
3930 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
3931 with the same behavior as the Linux system call of the same name.
3935 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
3936 128-bit long double format.
3938 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
3939 IBM1161, and IBM1162 charsets.
3941 * Andreas Jaeger contributed a port to x86-64/Linux.
3943 * Peter Bruin contributed a port to PowerPC/Hurd.
3945 * libc functions using I/O streams now can handle wide-oriented streams
3948 * optimizations in the dynamic linker. Binaries created by recent binutils
3949 versions start up quicker due to reduced time spent on relocations.
3951 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
3955 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
3956 asinh, atanh, j0 for the 128-bit long double format.
3958 * Bruno Haible updated all the code handling Unicode in some form to
3959 support Unicode 3.1.
3961 * Speed of regex for single-byte locales is back to previous levels.
3962 Patch by Isamu Hasegawa.
3964 * Alpha, SPARC, and IA-64 now also using floating stacks.
3966 * Startup time of internationalized applications greatly improved through
3967 iconv cache. Use iconvconfig to generate the cache file.
3968 Contributed by Ulrich Drepper.
3970 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
3971 severe performance problems. Patch by David Mosberger.
3973 * The Hurd port got a lot more functionality like AIO, various stdio
3974 extensions, etc. Mainly done by Roland McGrath.
3976 * mtrace can now lookup symbols in shared libraries.
3980 * Intel's IA-64 math library is largely integrated. It provides fast and
3981 accurate implementatations for most basic and standard math functions
3982 in float, double, and long double format.
3984 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
3985 and asin for the 96-bit long double format and asin, log, tan for the
3986 128-bit long double format.
3988 * The beginning of a last-bit accurate math library by IBM Haifa were added.
3989 The basic double functions exist today. Contributed by Abraham Ziv
3990 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
3991 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
3993 * An asynchronous name lookup library was added. The interface is designed
3994 after POSIX AIO. The proposal was circulated beforehand to get comments.
3995 No negative ones came in. Implemented by Ulrich Drepper.
3997 * Port to S390/64bit contributed by Martin Schwidefsky
3998 <schwidefsky@de.ibm.com>.
4000 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
4001 of functions for Linux/IA-64.
4003 * The RPC code is now thread safe. Threads can now use the same service
4004 of different services at the same time. Patch by Eric Norum
4005 <eric.norum@usask.ca> with some help by Ulrich Drepper.
4007 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
4008 family of functions for Linux/S390.
4010 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
4011 of functions for Linux/x86.
4013 * Port to Linux/CRIS contributed by Axis Communications.
4017 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
4018 we can now check for namespace violations and missing declarations. The
4019 result is that almost all headers are now Unix-compliant (as defined in
4020 the upcoming XPG6). The negative side is that some programs might need
4021 corrections, too, if they depend on the incorrect form of the headers in
4022 previous versions which defined too many symbols and included too many
4025 * regex now handles multibyte character sets correctly.
4026 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
4028 * iconv (the program) does now conform to the upcoming XPG6 and handles
4029 charmaps. Instead of the charset names the path of charmaps can be
4030 provided and the conversion happens based on this data.
4031 Contributed by Ulrich Drepper.
4033 * The locale program now provides detailed information about the installed
4038 only lists the names of the supported locales
4042 provides details such as country, language, and codeset name.
4043 Contributed by Ulrich Drepper.
4047 * The gencat program now parses the input file according to the charset
4048 selected by the LC_CTYPE category. This is important for stateful
4049 character sets. To make generating catalogs easier there is a way
4050 to overwrite the charset selected by the locale: before the first
4051 message or $ quote line the catalog can contain a line like
4053 $ codeset=ISO-8859-2
4055 to select the charset (ISO-8859-2 in this case).
4057 Implemented by Shinya Hanataka and Ulrich Drepper.
4059 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
4060 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
4061 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
4063 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
4064 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
4066 * The LANGUAGE environment variable is now ignored unless the locale is
4067 changed from the default "C" locale.
4069 * The usual bug fixes.
4073 * Greg McGary added runtime support for bounds checking using gcc's
4074 new -fbounded-pointers option. ix86 target is complete. PowerPC
4077 * Thorsten Kukuk added secure mode support to nscd.
4079 * The Berkeley db libraries have been removed.
4081 Related, the nss_db module is now in a separate package since it
4082 obviously requires a database library being available.
4084 * Wide character I/O streams implemented by Ulrich Drepper.
4086 * Functions from the extended socket API added by Ulrich Drepper.
4088 * Functions feenableexcept and fedisableexcept to control the
4089 behaviour of individual exceptions have been added by Andreas Jaeger.
4091 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
4093 * The resolver code has been updated from bind 8.2.3-T5B which supports
4094 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
4097 This change could in some situations effect backward compatibility. Since
4098 now `_res' is a thread-local instead of a global variable, modifying it
4099 in one thread does not have any effect in other threads.
4101 The resolver library was also extended to allow IPv6 as the transport
4102 protocol for the requests. This work was done by Stig Venaas.
4104 * Compatibility code for K&R C compilers has been removed from the
4105 header files. A ISO C compiler is needed to use the library
4106 (conforming to either C89 or C99 standard).
4108 * Complete rewrite of the localedef program to support multibyte character
4109 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
4110 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
4111 Implemented by Ulrich Drepper.
4113 Bruno Haible significantly improved the generation and use of the data
4114 structures for the wide character tables.
4116 * Plural handling in gettext implemented by Ulrich Drepper.
4118 * The utmp daemon has been removed.
4120 * The port to MIPS-Linux has been finished by Andreas Jaeger.
4122 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
4125 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
4127 * POSIX barriers implemented by Kaz Kylheku.
4129 * POSIX spawn function family implemented by Ulrich Drepper.
4131 * POSIX spinlocks are now available.
4133 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
4135 * the configure option --enable-kernel=X.Y.Z allows to strip out
4136 compatibility for kernel versions before X.Y.Z. This is currently only
4137 implemented for Linux.
4139 * the sockaddr_in6 structure changed. The IPv6 working group added a new
4140 field sin6_scope_id. This means that all programs using IPv6 should be
4141 recompiled. Don't expect binary compatibility with previous glibc
4144 * various conversion modules for IBM character sets contributed by
4147 * IA-64 port by Jes Sorensen and HJ Lu.
4161 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
4163 * New xdr functions are added; some rpc functions are now 64bit clean.
4165 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
4167 * Fixed known incompatibilities with glibc 2.0.
4169 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
4171 * Optimized a number of functions (especially the ELF dynamic loader).
4173 * Update timezone data files.
4175 * lots of charmaps corrections
4177 * some new locale definitions and charmaps
4182 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
4183 conform to POSIX member type requirements. Symbol versions have been
4184 adjusted as needed within the library, and for direct use by applications,
4185 but there is potential for problems if third-party libraries use
4186 struct timeval as part of their interface. This does not present
4187 a problem for X and other "essential" system libraries.
4189 * An additional locale model to support C++ Standard Library locale
4190 model and probably more was implemented by Ulrich Drepper.
4192 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
4195 * Miles Bader provided the `argp' function family to support hierachical
4196 command line argument parsing, layered on top of getopt.
4198 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
4200 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
4203 * scanf recognizes the %a and %A format for scanning floating point numbers.
4205 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
4206 information and interfaces for the available integer types.
4208 * about 130 new math functions were added to implement the ISO C9x math
4211 * the new header <complex.h> contains definitions of the complex math
4212 functions from ISO C 9X.
4214 * the new header <tgmath.h> defines generic macros to use complex or
4215 real valued functions.
4217 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
4219 * Andreas Jaeger provided a test suite for the math library.
4221 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
4223 * Ulrich Drepper added character set conversion functions (iconv).
4225 * Optimized string functions have been added.
4227 * The localedata addon is now part of glibc.
4229 * An implementation of profiling shared libraries was added by Ulrich Drepper.
4231 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
4232 daemon for NSS (nscd).
4234 Missing a better place here are some numbers on improvements. Under
4235 Linux 2.1.125 un-tar-ing the kernel sources takes
4239 using local files 12.19s 6.88s 22.91s
4241 using NIS 13.92s 8.91s 26.34s
4243 using NIS & nscd 10.37s 7.34s 25.30s
4245 using NIS+ 27.57s 30.37s 640.46s
4247 using NIS+ & nscd 10.25s 7.83s 26.51s
4249 using NIS & old nscd [1] 13.83s 8.32s 29.60s
4251 Keep in mind that non-namelookup related operations dominate above times.
4252 It was just a common complain that using NIS+ unpacking the kernel is
4255 [1] The old nscd implementation is not available anymore since it was
4256 distributed with glibc up to version 2.0.98 and thus is now replaced.
4258 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
4260 * Mark Kettenis provided a Hesiod NSS module.
4262 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
4263 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
4265 * rcmd can now handle netgroups (Dick Streefland).
4267 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
4270 * Support for the IPv6 protocol has been added to the socket API, as per the
4271 latest draft standards.
4273 * Support for Linux 2.2 has been added.
4275 * Interface changes relative to the latest 2.0.x release:
4276 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
4277 addseverity NEW: Unix98
4278 alphasort64 NEW: LFS
4279 argp_err_exit_status NEW: argp, GNU ext
4280 argp_error NEW: argp, GNU ext
4281 argp_failure NEW: argp, GNU ext
4282 argp_help NEW: argp, GNU ext
4283 argp_parse NEW: argp, GNU ext
4284 argp_program_bug_address NEW: argp, GNU ext
4285 argp_program_version NEW: argp, GNU ext
4286 argp_program_version_hook NEW: argp, GNU ext
4287 argp_state_help NEW: argp, GNU ext
4288 argp_usage NEW: argp, GNU ext
4289 authdes_create NEW: Secure RPC
4290 authdes_getucred NEW: Secure RPC
4291 authdes_pk_create NEW: Secure RPC
4292 backtrace NEW: GNU ext.
4293 backtrace_symbols NEW: GNU ext.
4294 backtrace_symbols_fd NEW: GNU ext.
4296 cacosf NEW: ISO C 9x
4297 cacosh NEW: ISO C 9x
4298 cacoshf NEW: ISO C 9x
4299 cacoshl NEW: ISO C 9x
4300 cacosl NEW: ISO C 9x
4307 casinf NEW: ISO C 9x
4308 casinh NEW: ISO C 9x
4309 casinhf NEW: ISO C 9x
4310 casinhl NEW: ISO C 9x
4311 casinl NEW: ISO C 9x
4313 catanf NEW: ISO C 9x
4314 catanh NEW: ISO C 9x
4315 catanhf NEW: ISO C 9x
4316 catanhl NEW: ISO C 9x
4317 catanl NEW: ISO C 9x
4318 cbc_crypt NEW: Secure RPC
4322 ccoshf NEW: ISO C 9x
4323 ccoshl NEW: ISO C 9x
4329 cimagf NEW: ISO C 9x
4330 cimagl NEW: ISO C 9x
4331 clearerr_locked REMOVED
4332 clntunix_create NEW: sunrpc ext
4334 clog10 NEW: ISO C 9x
4335 clog10f NEW: ISO C 9x
4336 clog10l NEW: ISO C 9x
4346 cprojf NEW: ISO C 9x
4347 cprojl NEW: ISO C 9x
4349 crealf NEW: ISO C 9x
4350 creall NEW: ISO C 9x
4355 csinhf NEW: ISO C 9x
4356 csinhl NEW: ISO C 9x
4359 csqrtf NEW: ISO C 9x
4360 csqrtl NEW: ISO C 9x
4364 ctanhf NEW: ISO C 9x
4365 ctanhl NEW: ISO C 9x
4367 des_setparity NEW: Secure RPC
4368 ecb_crypt NEW: Secure RPC
4369 endutxent NEW: Unix98
4371 exp10f NEW: ISO C 9x
4372 exp10l NEW: ISO C 9x
4376 fattach NEW: STREAMS
4377 fdetach NEW: STREAMS
4381 feclearexcept NEW: ISO C 9x
4382 fegetenv NEW: ISO C 9x
4383 fegetexceptflag NEW: ISO C 9x
4384 fegetround NEW: ISO C 9x
4385 feholdexcept NEW: ISO C 9x
4387 feraiseexcept NEW: ISO C 9x
4388 ferror_locked REMOVED
4389 fesetenv NEW: ISO C 9x
4390 fesetexceptflag NEW: ISO C 9x
4391 fesetround NEW: ISO C 9x
4392 fetestexcept NEW: ISO C 9x
4393 feupdateenv NEW: ISO C 9x
4394 fflush_locked REMOVED
4398 fgets_unlocked NEW: GNU ext.
4399 fileno_locked REMOVED
4411 fputc_locked REMOVED
4412 fputs_unlocked NEW: GNU ext.
4413 fread_unlocked NEW: GNU ext.
4418 fstatvfs NEW: Unix98
4422 ftruncate64 NEW: LFS
4424 fwrite_unlocked NEW: GNU ext.
4425 gai_strerror NEW: IPv6
4429 getchar_locked REMOVED
4431 getdate_err NEW: Unix98
4432 getdate_r NEW: GNU ext.
4434 getnameinfo NEW: IPv6
4435 getnetname NEW: Secure RPC
4436 getpmsg NEW: STREAMS
4437 getpt NEW: Unix98 PTY
4438 getrlimit64 NEW: LFS
4439 getutxent NEW: Unix98
4440 getutxid NEW: Unix98
4441 getutxline NEW: Unix98
4442 glob64 NEW: GNU ext.
4443 globfree64 NEW: GNU ext.
4444 gnu_get_libc_release NEW: GNU ext.
4445 gnu_get_libc_version NEW: GNU ext.
4446 grantpt NEW: Unix98 PTY
4447 host2netname NEW: Secure RPC
4449 iconv_close NEW: iconv
4450 iconv_open NEW: iconv
4451 if_freenameindex NEW: IPv6
4452 if_indextoname NEW: IPv6
4453 if_nameindex NEW: IPv6
4454 if_nametoindex NEW: IPv6
4455 in6addr_any NEW: IPv6
4456 in6addr_loopback NEW: IPv6
4457 inet6_isipv4mapped NEW: IPv6
4458 isastream NEW: STREAMS
4459 iswblank NEW: GNU ext.
4460 key_decryptsession NEW: Secure RPC
4461 key_decryptsession_pk NEW: Secure RPC
4462 key_encryptsession NEW: Secure RPC
4463 key_encryptsession_pk NEW: Secure RPC
4464 key_gendes NEW: Secure RPC
4465 key_get_conv NEW: Secure RPC
4466 key_secretkey_is_set NEW: Secure RPC
4467 key_setnet NEW: Secure RPC
4468 key_setsecret NEW: Secure RPC
4469 llrint NEW: ISO C 9x
4470 llrintf NEW: ISO C 9x
4471 llrintl NEW: ISO C 9x
4472 llround NEW: ISO C 9x
4473 llroundf NEW: ISO C 9x
4474 llroundl NEW: ISO C 9x
4479 lrintf NEW: ISO C 9x
4480 lrintl NEW: ISO C 9x
4481 lround NEW: ISO C 9x
4482 lroundf NEW: ISO C 9x
4483 lroundl NEW: ISO C 9x
4485 makecontext NEW: Unix98
4486 mempcpy NEW: GNU ext.
4489 modify_ldt NEW: kernel
4493 nearbyint NEW: ISO C 9x
4494 nearbyintf NEW: ISO C 9x
4495 nearbyintl NEW: ISO C 9x
4496 netname2host NEW: Secure RPC
4497 netname2user NEW: Secure RPC
4498 nexttoward NEW: ISO C 9x
4499 nexttowardf NEW: ISO C 9x
4500 nexttowardl NEW: ISO C 9x
4504 passwd2des NEW: Secure RPC
4506 pow10f NEW: GNU ext.
4507 pow10l NEW: GNU ext.
4510 printf_size NEW: GNU ext.
4511 printf_size_info NEW: GNU ext.
4512 profil_counter REMOVED
4513 pthread_mutexattr_getkind_np REPLACED
4514 pthread_mutexattr_setkind_np REPLACED
4515 ptsname NEW: Unix98 PTY
4516 ptsname_r NEW: Unix98 PTY
4518 putchar_locked REMOVED
4519 putgrent NEW: GNU ext.
4521 putpmsg NEW: STREAMS
4522 pututxline NEW: Unix98
4526 readdir64_r NEW: LFS
4527 remquo NEW: ISO C 9x
4528 remquof NEW: ISO C 9x
4529 remquol NEW: ISO C 9x
4531 roundf NEW: ISO C 9x
4532 roundl NEW: ISO C 9x
4534 scalbln NEW: ISO C 9x
4535 scalblnf NEW: ISO C 9x
4536 scalblnl NEW: ISO C 9x
4538 sendfile NEW: kernel
4539 setcontext NEW: Unix98
4540 setrlimit64 NEW: LFS
4541 setutxent NEW: Unix98
4543 sigignore NEW: Unix98
4544 sigqueue NEW: POSIX.1b
4545 sigrelse NEW: Unix98
4546 sigset NEW: POSIX.1b
4547 sigtimedwait NEW: POSIX.1b
4548 sigwaitinfo NEW: POSIX.1b
4549 sincos NEW: GNU ext.
4550 sincosf NEW: GNU ext.
4551 sincosl NEW: GNU ext.
4555 strcasestr NEW: GNU ext.
4556 strtoimax NEW: ISO C 9x
4557 strtoumax NEW: ISO C 9x
4558 strverscmp NEW: GNU ext.
4559 svcauthdes_stats NEW: Secure RPC
4560 svcunix_create NEW: sunrpc etx
4561 svcunixfd_create NEW: sunrpc ext
4562 swapcontext NEW: Unix98
4563 tcgetsid NEW: Unix98 PTY
4564 tdestroy NEW: GNU ext.
4565 tgamma NEW: ISO C 9x
4566 tgammaf NEW: ISO C 9x
4567 tgammal NEW: ISO C 9x
4571 truncf NEW: ISO C 9x
4572 truncl NEW: ISO C 9x
4574 unlockpt NEW: Unix98 PTY
4575 updwtmpx NEW: Unix98
4576 user2netname NEW: Secure RPC
4577 utmpxname NEW: Unix98
4578 versionsort NEW: GNU ext.
4579 versionsort64 NEW: GNU ext.
4581 wcscasecmp NEW: GNU ext.
4582 wcsncasecmp NEW: GNU ext.
4583 wcsnlen NEW: GNU ext.
4584 wcstoimax NEW: ISO C 9x
4585 wcstoll NEW: ISO C 9x
4586 wcstoull NEW: ISO C 9x
4587 wcstoumax NEW: ISO C 9x
4589 wordexp NEW: POSIX.2
4590 wordfree NEW: POSIX.2
4591 write_profiling REMOVED
4592 xdecrypt NEW: Secure RPC
4593 xdr_authdes_cred NEW: Secure RPC
4594 xdr_authdes_verf NEW: Secure RPC
4595 xdr_cryptkeyarg NEW: Secure RPC
4596 xdr_cryptkeyarg2 NEW: Secure RPC
4597 xdr_cryptkeyres NEW: Secure RPC
4598 xdr_getcredres NEW: Secure RPC
4599 xdr_key_netstarg NEW: Secure RPC
4600 xdr_key_netstres NEW: Secure RPC
4601 xdr_keybuf NEW: Secure RPC
4602 xdr_keystatus NEW: Secure RPC
4603 xdr_netnamestr NEW: Secure RPC
4604 xdr_sizeof NEW: Secure RPC
4605 xdr_unixcred NEW: sunrpc ext
4606 xencrypt NEW: Secure RPC
4607 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
4618 * inet_ntoa is thread-safe
4620 * updwtmp is moved from libutil to libc
4622 * rewrite of cbrt function
4624 * update of timezone data
4638 * add atoll function
4640 * fix complex problems in Berkeley DB code
4642 * fix math functions
4646 * fixed lots of header problems (especially Linux/GNU specific)
4648 * dynamic loader preserves all registers
4650 * Roland McGrath provided support for handling of auxiliary objects in
4651 the ELF dynamic loader.
4653 * support for parallel builds is improved
4657 * GNU extensions are no longer declared by default. To enable them you
4658 must define the macro `_GNU_SOURCE' in your program or compile with
4661 * The library has changed from using GNU ld symbol aliases to using weak
4662 symbols where available. The ELF object file format supports weak
4663 symbols; GNU ld also supports weak symbols in the a.out format. (There
4664 is also now support for other GNU ld extensions in ELF. Use the
4665 `--with-elf' option to configure to indicate you have ELF, and
4666 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
4667 of many files which contained only symbol aliases, reducing the size of
4668 the source and the compiled library; many other files were renamed to
4669 less cryptic names previously occupied by the symbol alias files.
4670 There is a new header file <elf.h> for programs which operate on
4671 files in the ELF format.
4673 * Converted to Autoconf version 2, so `configure' has more options.
4674 Run `configure --help' to see the details.
4676 * The library can now be configured to build profiling, highly-optimized
4677 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
4678 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
4679 `configure' enable building these extra libraries. The shared library is
4680 built by default when using both ELF and GNU ld. When shared libraries
4681 are enabled, the new library `-ldl' is available for arbitrary run-time
4682 loading of shared objects; its interface is defined in <dlfcn.h>. The
4683 new header file <link.h> gives access to the internals of the run-time
4684 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
4685 application of same name on other systems and it provides information
4686 about dynamically linked binaries.
4688 * The C library now provides the run-time support code for profiling
4689 executables compiled with `-pg'. Programs can control the profiling code
4690 through the interface in <sys/gmon.h>. The `gmon.out' files written by
4691 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
4692 the support for this file format was contributed by David Mosberger-Tang.
4694 * The math code has been replaced with a math library based on fdlibm from
4695 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
4696 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
4697 functions. The math functions now reside in a separate library, so
4698 programs using them will need to use `-lm' their linking commands.
4700 * John C. Bowman contributed optimized ix87 assembler inline functions.
4702 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
4703 mechanism similar to that found in Solaris 2. This is now used for the
4704 group, passwd, hosts, networks, services, protocols, rpc, ethers,
4705 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
4706 file controls what services are used for each individual database. This
4707 works by loading shared libraries with names specified in `nsswitch.conf',
4708 so service modules can be changed or added at any time without even
4709 relinking any program. Currently there are the file, db, and NIS based
4710 NSS services available.
4712 * The new functions `strtoq' and `strtouq' parse integer values from
4713 strings, like `strtol' and `strtoul', but they return `long long int' and
4714 `unsigned long long int' values, respectively (64-bit quantities).
4716 * The new functions `strtof' and `strtold' parse floating-point values from
4717 strings, like `strtod', but they return `float' and `long double' values,
4718 respectively (on some machines `double' and `long double' are the same).
4720 * Ulrich Drepper has contributed new implementations of the floating-point
4721 printing and reading code used in the `printf' family of functions and
4722 `strtod', `strtof', and `strtold'. These new functions are perfectly
4723 accurate, and much faster than the old ones.
4725 * The implementation of the POSIX locale model was completely rewritten by
4726 Ulrich Drepper. This includes the new programs `localedef' and `locale'
4727 to compile the POSIX locale definition.
4729 * The former dummy implementations of the strcoll and strxfrm function are
4730 now replaced by fully functional code contributed by Ulrich Drepper. The
4731 collation information comes from the POSIX locale definitions.
4733 * The new header <langinfo.h> defines an interface for accessing
4734 various locale-dependent data (using the locale chosen with `setlocale').
4736 * Ulrich Drepper has contributed a new suite of functions for operation on
4737 wide-character and multibyte-character strings, in <wchar.h>;
4738 and classification and case conversion of wide characters, in <wctype.h>.
4739 These new functions are conforming to the ISO C, Amendement 1 specification.
4741 * There is now a second implementation of the standard I/O library available.
4742 It comes from GNU libg++ as was written by Per Bothner, heavily modified
4743 by Hongjiu Lu and made thread safe by Ulrich Drepper.
4745 * You can now use positional parameter specifications in format strings
4746 for the `printf' and `scanf' families of functions. For example,
4747 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
4748 ``Number 6, Mr Jones''. This is mainly useful when providing different
4749 format strings for different languages, whose grammars may dictate
4750 different orderings of the values being printed. To support this
4751 feature, the interface for `register_printf_handler' has changed; see
4752 the header file <printf.h> for details.
4754 * The `printf' and `scanf' families of functions now understand a new
4755 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
4756 to group numbers as indicated by the locale; for `scanf' and friends, this
4757 says to accept as valid only a number with all the proper grouping
4758 separators in the right places. In the default "C" locale, numbers are
4759 not grouped; but locales for specific countries will define the usual
4760 conventions (i.e. separate thousands with `,' in the US locale).
4762 * The pgrp functions have been regularized, slightly incompatibly but much
4763 less confusingly. The core functions are now `getpgid' and `setpgid',
4764 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
4765 argument) and BSD `setpgrp' (identical to `setpgid') functions are
4766 provided for compatibility. There is no longer an incompatible `getpgrp'
4767 with an argument declared under _BSD_SOURCE; no BSD code uses it.
4769 * The new header file <fts.h> and suite of functions simplify programs that
4770 operate on directory trees. This code comes from 4.4 BSD.
4772 * The resolver code has been updated from the BIND 4.9.5-P1 release.
4773 Parts of the code were heavily modified by Ulrich Drepper to fit in the
4774 NSS scheme used in glibc.
4776 * There is a new malloc debugging hook `__memalign_hook'.
4778 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
4779 `unsigned int' in <sys/types.h>. These are for compatibility only and
4780 their use is discouraged.
4782 * The `-lmcheck' library to enable standard malloc debugging hooks is now
4783 done differently, so that it works even without GNU ld.
4785 * New function `euidaccess' checks allowed access to a file like `access',
4786 but using the effective IDs instead of the real IDs.
4788 * The time zone data files have been updated for the latest and greatest
4789 local time conventions of the countries of the world.
4791 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
4794 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
4795 for formatting floating-point numbers. They are provided only for
4796 compatibility; new programs should use `sprintf' instead. There are
4797 also equivalent function for the `long double' floating-point type and
4798 all functions also exist in a reentrant form.
4800 * The new auxiliary library `-lutil' from 4.4 BSD contains various
4801 functions for maintaining the login-record files (primarily of use to
4802 system programs such as `login'), and convenient functions for
4803 allocating and initializing a pseudo-terminal (pty) device.
4805 * Ulrich Drepper has contributed new support for System V style
4806 shared memory and IPC on systems that support it.
4808 * Ulrich Drepper has contributed several miscellaneous new functions found
4809 in System V: The `hsearch' family of functions provide an effective
4810 implementation of hash tables; `a64l' and `l64a' provide a very simple
4811 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
4814 * Ulrich Drepper has contributed new reentrant counterparts for the
4815 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
4817 * Ulrich Drepper has contributed new, highly-optimized versions of several
4818 string functions for the i486/Pentium family of processors.
4820 * Ulrich Drepper has updated the Linux-specific code, based largely
4821 on work done in Hongjiu Lu's version of GNU libc for Linux.
4822 The GNU library now supports Linux versions 2.0.10 and later,
4823 using the ELF object file format (i[3456]86-*-linux).
4825 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
4827 * David Mosberger-Tang and Richard Henderson have ported the C library
4828 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
4829 dynamic linking support for ELF/Alpha.
4831 * Richard Henderson contributed several Alpha optimized assembler function
4832 for arithmetic and string handling.
4834 * Ulrich Drepper has contributed a new set of message catalog functions to
4835 support multiple languages using the <libintl.h> interface, for use with
4836 his new package GNU gettext. Translation volunteers have contributed
4837 catalogs of the library's messages in Spanish, German, and Korean.
4839 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
4840 program and the `catgets' function for reading the catalog files it
4841 creates. (The <libintl.h> interface is preferred; we include the
4842 <nl_types.h> interface using `catgets' only for source compatibility with
4843 programs already written to use it.)
4845 * New header file <values.h> gives SVID-compatible names for <limits.h>
4848 * Various new macros, declarations, and small header files for compatibility
4851 * New function `group_member' is a convenient way to check if a process has
4852 a given effective group ID.
4854 * When using GCC 2.7 and later, the socket functions are now declared in a
4855 special way so that passing an argument of type `struct sockaddr_in *',
4856 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
4857 `struct sockaddr *' type, does not generate a type-clash warning.
4859 * New function `error' declared in header file <error.h> is a convenient
4860 function for printing error messages and optionally exiting; this is the
4861 canonical function used in GNU programs. The new functions `err', `warn',
4862 and friends in header file <err.h> are the canonical 4.4 BSD interface for
4863 doing the same thing.
4865 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
4866 POSIX.2 `glob' function to do ~ and {...} expansion.
4868 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
4869 `clearenv' which is used in POSIX.9 is also available.
4871 * New function `getsid' returns session ID number on systems that support it.
4873 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
4874 files <db.h> and <mpool.h> provide a rich set of functions for several
4875 types of simple databases stored in memory and in files, and <ndbm.h> is
4876 an old `ndbm'-compatible interface using the `db' functions. Link with
4877 `-ldb' to get these functions.
4879 * New macro `strdupa' copies a string like `strdup', but uses local stack
4880 space from `alloca' instead of dynamic heap space from `malloc'.
4882 * New function `strnlen' is like `strlen' but searches only a given maximum
4883 number of characters for the null terminator. `stpncpy', `strndup' and
4884 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
4887 * New function `statfs' in header <sys/statfs.h>.
4889 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
4890 provide convenient functions for operating on blocks of null-terminated
4893 * A new suite of functions in <utmp.h> handle all the details of reading
4894 and writing the utmp file.
4896 * An implementation of the NIS/YP(tm) based NSS service was contributed by
4899 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
4900 completely POSIX compliant and also implemented the extended functionality
4901 to handle alternate digit representation and alternate era date formats.
4903 * Ulrich Drepper provided an implementation of the `strptime' function
4904 defined in XPG4.2 which transforms a string into a `struct tm' value.
4906 * Paul Eggert provided the tzselect shell script as part of the timezone
4907 code. The shell script makes it easy to select the correct timezone
4910 * The implementation of the malloc family of functions is completely replaced
4911 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
4912 The implementation uses the mmap function (if available) and it is
4913 optimized for the use in multi threaded programs.
4915 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
4916 functions. This new functionality is usable by specifying a special
4917 salt string and it is compatible with implementation on *BSD systems.
4919 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
4920 `getsubopt' to handle second level command line options, `bsd_signal'
4921 to access BSD style `signal' functionality, the obsolete `regexp' style
4924 * the `lchown' function is available on system which support this
4927 * The implementation of the shadow password handling function was contributed
4930 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
4932 * POSIX.1g support was added. The <sys/select.h> header is available,
4933 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
4934 implementation of `getaddrinfo'.
4938 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
4940 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
4941 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
4943 * The new function `daemon' from 4.4 BSD is useful for server programs that
4944 want to put themselves in the background.
4946 * Joel Sherrill has contributed support for several standalone boards that
4947 run without an operating system.
4949 * `printf', `scanf' and friends now accept a `q' type modifier for long
4950 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
4952 * All of the code taken from BSD (notably most of the math and networking
4953 routines) has been updated from the BSD 4.4-Lite release.
4955 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
4957 * The new functions `getdomainname' and `setdomainname' fetch or change the
4958 YP/NIS domain name. These are system calls which exist on systems which
4961 * The time zone data files have been updated for the latest international
4964 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
4965 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
4969 * The C library now includes support for Sun RPC, from Sun's free
4970 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
4971 are included. (There is still no support for YP.)
4973 * Tom Quinn has contributed a port of the C library to SGI machines running
4974 Irix 4 (mips-sgi-irix4).
4976 * The new `lockf' function is a simplified interface to the locking
4977 facilities of `fcntl', included for compatibility.
4979 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
4981 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
4983 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
4986 * The error message printed by `assert' for a failed assertion now includes
4987 the name of the program (if using GNU ld) and the name of the calling
4988 function (with versions of GCC that support this).
4990 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
4992 * The library now includes the <sys/mman.h> header file and memory
4993 management functions `mmap', `munmap', `mprotect', `msync', and
4994 `madvise', on systems that support those facilities.
4996 * The interface for `mcheck' has changed slightly: the function called to
4997 abort the program when an allocation inconsistency is detected now takes
4998 an argument that indicates the type of failure. The new function
4999 `mprobe' lets you request a consistency check for a particular block at
5000 any time (checks are normally done only when you call `free' or `realloc'
5003 * It is now possible to easily cross-compile the C library, building on one
5004 system a library to run on another machine and/or operating system. All
5005 you need to do is set the variable `HOST_CC' in `configparms' to the
5006 native compiler for programs to run on the machine you are building on (a
5007 few generator programs are used on Unix systems); set `CC' to the
5010 * The new function `fexecve' (only implemented on the GNU system) executes
5011 a program file given a file descriptor already open on the file.
5015 * Brendan Kehoe has contributed most of a port to the DEC Alpha
5016 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
5018 * You can set the variable `libprefix' in `configparms' to specify a prefix
5019 to be prepended to installed library files; this makes it easy to install
5020 the GNU C library to be linked as `-lgnuc' or whatever.
5022 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
5023 copies a limited number of characters from a string, and returns the
5024 address of the last character written.
5026 * You no longer need to check for whether the installed `stddef.h' is
5027 compatible with the GNU C library. configure now checks for you.
5029 * You can now define a per-stream `fileno' function to convert the
5030 stream's cookie into an integral file descriptor.
5032 * ``malloc (0)'' no longer returns a null pointer. Instead, it
5033 allocates zero bytes of storage, and returns a unique pointer which
5034 you can pass to `realloc' or `free'. The behavior is undefined if
5035 you dereference this pointer.
5037 * The C library now runs on Sony NEWS m68k machines running either
5038 NewsOS 3 or NewsOS 4.
5040 * The new `syscall' function is a system-dependent primitive function
5041 for invoking system calls. It has the canonical behavior on Unix
5042 systems, including unreliable return values for some calls (such as
5043 `pipe', `fork' and `getppid').
5045 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
5046 to `EAGAIN', which is the preferred name. On systems whose kernels
5047 use two distinct codes, the C library now translates EWOULDBLOCK to
5048 EAGAIN in every system call function.
5052 * The GNU C Library Reference Manual is now distributed with the library.
5053 `make dvi' will produce a DVI file of the printed manual.
5054 `make info' will produce Info files that you can read on line using C-h i
5055 in Emacs or the `info' program.
5056 Please send comments on the manual to bug-glibc-manual@gnu.org.
5058 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
5060 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
5062 * Jason Merrill has contributed a port to the Sequent Symmetry running
5063 Dynix version 3 (i386-sequent-dynix).
5065 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
5066 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
5068 * New function `memory_warnings' lets you arrange to get warnings when
5069 malloc is running out of memory to allocate, like Emacs gives you.
5071 * The C library now contains the relocating allocator used in Emacs 19 for
5072 its editing buffers. This allocator (ralloc) minimizes allocation
5073 overhead and fragmentation by moving allocated regions around whenever it
5074 needs to. You always refer to a ralloc'd region with a "handle" (a
5075 pointer to a pointer--an object of type `void **').
5077 * There is a new `printf' format: `%m' gives you the string corresponding
5078 to the error code in `errno'.
5080 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
5081 or `%[' conversion, but instead of filling in a fixed-sized buffer you
5082 pass, the `a' modifier says to fill in a `char **' you pass with a
5085 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
5086 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
5087 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
5089 * `mkstemp' is a traditional Unix function to atomically create and open a
5090 uniquely-named temporary file.
5094 * The standard location for the file that says what the local timezone is
5095 has changed again. It is now `/usr/local/etc/localtime' (or more
5096 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
5098 * The distribution no longer contains any files with names longer than 14
5101 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
5102 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
5104 * New functions `ttyslot' and `syslog' from 4.4 BSD.
5108 * The configuration process has changed quite a bit. The `configure'
5109 script is now used just like the configuration scripts for other GNU
5110 packages. The `sysdeps' directory hierarchy is much rearranged.
5111 The file `INSTALL' explains the new scheme in detail.
5113 * The header files no longer need to be processed into ANSI C and
5114 traditional C versions. There is just one set of files to install, and
5115 it will work with ANSI or old C compilers (including `gcc -traditional').
5117 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
5118 MIPS DECStation running Ultrix 4.
5120 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
5121 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
5122 made itself into a shared library.
5124 * Yet further improved support for the i386, running 4.3 BSD-like systems
5125 (such as Mach 3 with the Unix single-server), or System V.
5127 * New function `strncasecmp' to do case-insensitive string comparison
5128 with limited length.
5130 * New function `strsep' is a reentrant alternative to `strtok'.
5132 * New functions `scandir' and `alphasort' for searching directories.
5134 * New function `setenv' is a better interface to `putenv'.
5136 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
5137 function for traversing a directory tree.
5139 * The GNU obstack package is now also part of the C library.
5140 The new function `open_obstack_stream' creates a stdio stream that
5141 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
5142 formatted output directly to an obstack.
5144 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
5145 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
5147 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
5149 * The new functions `strfry' and `memfrob' do mysterious and wonderful
5150 things to your strings.
5152 * There are some new test programs: test-fseek, testmb, and testrand.
5154 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
5155 These ports are not finished, but are a good starting place for really
5156 supporting those systems.
5158 * `/etc/localtime' is now the standard location for the file that says what
5159 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
5160 This follows the general principle that `/etc' is the place for all local
5161 configuration files.
5163 * The C library header files now use `extern "C"' when used by the C++
5164 compiler, so the C library should now work with C++ code.
5166 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
5167 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
5170 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
5171 function which uses the `merge sort' algorithm, and is said to be
5172 significantly faster than the old GNU `qsort' function. Merge sort is
5173 now the standard `qsort' function. The new algorithm can require a lot
5174 of temporary storage; so, the old sorting function is called when the
5175 required storage is not available.
5177 * The C library now includes Michael Glad's Ultra Fast Crypt, which
5178 provides the Unix `crypt' function, plus some other entry points.
5180 * The code and header files taken from 4.4 BSD have been updated with the
5181 latest files released from Berkeley.
5183 ----------------------------------------------------------------------
5184 Copyright information:
5186 Copyright (C) 1992-2018 Free Software Foundation, Inc.
5188 Permission is granted to anyone to make or distribute verbatim copies
5189 of this document as received, in any medium, provided that the
5190 copyright notice and this permission notice are preserved,
5191 thus giving the recipient permission to redistribute in turn.
5193 Permission is granted to distribute modified versions
5194 of this document, or of portions of it,
5195 under the above conditions, provided also that they
5196 carry prominent notices stating who last changed them.
5199 version-control: never