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 * <math.h> functions that round their results to a narrower type are added
79 from TS 18661-1:2014 and TS 18661-3:2015:
81 - fadd, faddl, daddl and corresponding fMaddfN, fMaddfNx, fMxaddfN and
84 - fsub, fsubl, dsubl and corresponding fMsubfN, fMsubfNx, fMxsubfN and
87 - fmul, fmull, dmull and corresponding fMmulfN, fMmulfNx, fMxmulfN and
90 - fdiv, fdivl, ddivl and corresponding fMdivfN, fMdivfNx, fMxdivfN and
93 * Two grammatical forms of month names are now supported for the following
94 languages: Armenian, Asturian, Catalan, Czech, Kashubian, Occitan, Ossetian,
95 Scottish Gaelic, Upper Sorbian, and Walloon. The following languages now
96 support two grammatical forms in abbreviated month names: Catalan, Greek,
99 * Newly added locales: Lower Sorbian (dsb_DE) and Yakut (sah_RU) also
100 include the support for two grammatical forms of month names.
102 * Building and running on GNU/Hurd systems now works without out-of-tree
105 * The renameat2 function has been added, a variant of the renameat function
106 which has a flags argument. If the flags are zero, the renameat2 function
107 acts like renameat. If the flag is not zero and there is no kernel
108 support for renameat2, the function will fail with an errno value of
109 EINVAL. This is different from the existing gnulib function renameatu,
110 which performs a plain rename operation in case of a RENAME_NOREPLACE
111 flags and a non-existing destination (and therefore has a race condition
112 that can clobber the destination inadvertently).
114 * The statx function has been added, a variant of the fstatat64
115 function with an additional flags argument. If there is no direct
116 kernel support for statx, glibc provides basic stat support based on
117 the fstatat64 function.
119 * IDN domain names in getaddrinfo and getnameinfo now use the system libidn2
120 library if installed. libidn2 version 2.0.5 or later is recommended. If
121 libidn2 is not available, internationalized domain names are not encoded
122 or decoded even if the AI_IDN or NI_IDN flags are passed to getaddrinfo or
123 getnameinfo. (getaddrinfo calls with non-ASCII names and AI_IDN will fail
124 with an encoding error.) Flags which used to change the IDN encoding and
125 decoding behavior (AI_IDN_ALLOW_UNASSIGNED, AI_IDN_USE_STD3_ASCII_RULES,
126 NI_IDN_ALLOW_UNASSIGNED, NI_IDN_USE_STD3_ASCII_RULES) have been
127 deprecated. They no longer have any effect.
129 * Parsing of dynamic string tokens in DT_RPATH, DT_RUNPATH, DT_NEEDED,
130 DT_AUXILIARY, and DT_FILTER has been expanded to support the full
131 range of ELF gABI expressions including such constructs as
132 '$ORIGIN$ORIGIN' (if valid). For SUID/GUID applications the rules
133 have been further restricted, and where in the past a dynamic string
134 token sequence may have been interpreted as a literal string it will
135 now cause a load failure. These load failures were always considered
136 unspecified behaviour from the perspective of the dynamic loader, and
137 for safety are now load errors e.g. /foo/${ORIGIN}.so in DT_NEEDED
138 results in a load failure now.
140 * Support for ISO C threads (ISO/IEC 9899:2011) has been added. The
141 implementation includes all the standard functions provided by
144 - thrd_current, thrd_equal, thrd_sleep, thrd_yield, thrd_create,
145 thrd_detach, thrd_exit, and thrd_join for thread management.
147 - mtx_init, mtx_lock, mtx_timedlock, mtx_trylock, mtx_unlock, and
148 mtx_destroy for mutual exclusion.
150 - call_once for function call synchronization.
152 - cnd_broadcast, cnd_destroy, cnd_init, cnd_signal, cnd_timedwait, and
153 cnd_wait for conditional variables.
155 - tss_create, tss_delete, tss_get, and tss_set for thread-local storage.
157 Application developers must link against libpthread to use ISO C threads.
159 Deprecated and removed features, and other changes affecting compatibility:
161 * The nonstandard header files <libio.h> and <_G_config.h> are no longer
162 installed. Software that was using either header should be updated to
163 use standard <stdio.h> interfaces instead.
165 * The stdio functions 'getc' and 'putc' are no longer defined as macros.
166 This was never required by the C standard, and the macros just expanded
167 to call alternative names for the same functions. If you hoped getc and
168 putc would provide performance improvements over fgetc and fputc, instead
169 investigate using (f)getc_unlocked and (f)putc_unlocked, and, if
170 necessary, flockfile and funlockfile.
172 * All stdio functions now treat end-of-file as a sticky condition. If you
173 read from a file until EOF, and then the file is enlarged by another
174 process, you must call clearerr or another function with the same effect
175 (e.g. fseek, rewind) before you can read the additional data. This
176 corrects a longstanding C99 conformance bug. It is most likely to affect
177 programs that use stdio to read interactive input from a terminal.
180 * The macros 'major', 'minor', and 'makedev' are now only available from
181 the header <sys/sysmacros.h>; not from <sys/types.h> or various other
182 headers that happen to include <sys/types.h>. These macros are rarely
183 used, not part of POSIX nor XSI, and their names frequently collide with
184 user code; see https://sourceware.org/bugzilla/show_bug.cgi?id=19239 for
187 <sys/sysmacros.h> is a GNU extension. Portable programs that require
188 these macros should first include <sys/types.h>, and then include
189 <sys/sysmacros.h> if __GNU_LIBRARY__ is defined.
191 * The tilegx*-*-linux-gnu configurations are no longer supported.
193 * The obsolete function ustat is no longer available to newly linked
194 binaries; the headers <ustat.h> and <sys/ustat.h> have been removed. This
195 function has been deprecated in favor of fstatfs and statfs.
197 * The obsolete function nfsservctl is no longer available to newly linked
198 binaries. This function was specific to systems using the Linux kernel
199 and could not usefully be used with the GNU C Library on systems with
200 version 3.1 or later of the Linux kernel.
202 * The obsolete function name llseek is no longer available to newly linked
203 binaries. This function was specific to systems using the Linux kernel
204 and was not declared in a header. Programs should use the lseek64 name
205 for this function instead.
207 * The AI_IDN_ALLOW_UNASSIGNED and NI_IDN_ALLOW_UNASSIGNED flags for the
208 getaddrinfo and getnameinfo functions have been deprecated. The behavior
209 previously selected by them is now always enabled.
211 * The AI_IDN_USE_STD3_ASCII_RULES and NI_IDN_USE_STD3_ASCII_RULES flags for
212 the getaddrinfo and getnameinfo functions have been deprecated. The STD3
213 restriction (rejecting '_' in host names, among other things) has been
214 removed, for increased compatibility with non-IDN name resolution.
216 * The fcntl function now have a Long File Support variant named fcntl64. It
217 is added to fix some Linux Open File Description (OFD) locks usage on non
218 LFS mode. As for others *64 functions, fcntl64 semantics are analogous with
219 fcntl and LFS support is handled transparently. Also for Linux, the OFD
220 locks act as a cancellation entrypoint.
222 * The obsolete functions encrypt, encrypt_r, setkey, setkey_r, cbc_crypt,
223 ecb_crypt, and des_setparity are no longer available to newly linked
224 binaries, and the headers <rpc/des_crypt.h> and <rpc/rpc_des.h> are no
225 longer installed. These functions encrypted and decrypted data with the
226 DES block cipher, which is no longer considered secure. Software that
227 still uses these functions should switch to a modern cryptography library,
230 * Reflecting the removal of the encrypt and setkey functions above, the
231 macro _XOPEN_CRYPT is no longer defined. As a consequence, the crypt
232 function is no longer declared unless _DEFAULT_SOURCE or _GNU_SOURCE is
235 * The obsolete function fcrypt is no longer available to newly linked
236 binaries. It was just another name for the standard function crypt,
237 and it has not appeared in any header file in many years.
239 * We have tentative plans to hand off maintenance of the passphrase-hashing
240 library, libcrypt, to a separate development project that will, we hope,
241 keep up better with new passphrase-hashing algorithms. We will continue
242 to declare 'crypt' in <unistd.h>, and programs that use 'crypt' or
243 'crypt_r' should not need to change at all; however, distributions will
244 need to install <crypt.h> and libcrypt from a separate project.
246 In this release, if the configure option --disable-crypt is used, glibc
247 will not install <crypt.h> or libcrypt, making room for the separate
248 project's versions of these files. The plan is to make this the default
249 behavior in a future release.
251 Changes to build and runtime requirements:
253 GNU make 4.0 or later is now required to build glibc.
255 Security related changes:
257 CVE-2016-6261, CVE-2016-6263, CVE-2017-14062: Various vulnerabilities have
258 been fixed by removing the glibc-internal IDNA implementation and using
259 the system-provided libidn2 library instead. Originally reported by Hanno
260 Böck and Christian Weisgerber.
262 CVE-2017-18269: An SSE2-based memmove implementation for the i386
263 architecture could corrupt memory. Reported by Max Horn.
265 CVE-2018-11236: Very long pathname arguments to realpath function could
266 result in an integer overflow and buffer overflow. Reported by Alexey
269 CVE-2018-11237: The mempcpy implementation for the Intel Xeon Phi
270 architecture could write beyond the target buffer, resulting in a buffer
271 overflow. Reported by Andreas Schwab.
273 The following bugs are resolved with this release:
275 [1190] stdio: fgetc()/fread() behaviour is not POSIX compliant
276 [6889] manual: 'PWD' mentioned but not specified
277 [13575] libc: SSIZE_MAX defined as LONG_MAX is inconsistent with ssize_t,
278 when __WORDSIZE != 64
279 [13762] regex: re_search etc. should return -2 on memory exhaustion
280 [13888] build: /tmp usage during testing
281 [13932] math: dbl-64 pow unexpectedly slow for some inputs
282 [14092] nptl: Support C11 threads
283 [14095] localedata: Review / update collation data from Unicode / ISO
285 [14508] libc: -Wformat warnings
286 [14553] libc: Namespace pollution loff_t in sys/types.h
287 [14890] libc: Make NT_PRFPREG canonical.
288 [15105] libc: Extra PLT references with -Os
289 [15512] libc: __bswap_constant_16 not compiled when -Werror -Wsign-
291 [16335] manual: Feature test macro documentation incomplete and out of
293 [16552] libc: Unify umount implementations in terms of umount2
294 [17082] libc: htons et al.: statement-expressions prevent use on global
295 scope with -O1 and higher
296 [17343] libc: Signed integer overflow in /stdlib/random_r.c
297 [17438] localedata: pt_BR: wrong d_fmt delimiter
298 [17662] libc: please implement binding for the new renameat2 syscall
299 [17721] libc: __restrict defined as /* Ignore */ even in c11
300 [17979] libc: inconsistency between uchar.h and stdint.h
301 [18018] dynamic-link: Additional $ORIGIN handling issues (CVE-2011-0536)
302 [18023] libc: extend_alloca is broken (questionable pointer comparison,
303 horrible machine code)
304 [18124] libc: hppa: setcontext erroneously returns -1 as exit code for
306 [18471] libc: llseek should be a compat symbol
307 [18473] soft-fp: [powerpc-nofpu] __sqrtsf2, __sqrtdf2 should be compat
309 [18991] nss: nss_files skips large entry in database
310 [19239] libc: Including stdlib.h ends up with macros major and minor being
312 [19463] libc: linknamespace failures when compiled with -Os
313 [19485] localedata: csb_PL: Update month translations + add yesstr/nostr
314 [19527] locale: Normalized charset name not recognized by setlocale
315 [19667] string: Missing Sanity Check for malloc calls in file 'testcopy.c'
316 [19668] libc: Missing Sanity Check for malloc() in file 'tst-setcontext-
318 [19728] network: out of bounds stack read in libidn function
319 idna_to_ascii_4i (CVE-2016-6261)
320 [19729] network: out of bounds heap read on invalid utf-8 inputs in
321 stringprep_utf8_nfkc_normalize (CVE-2016-6263)
322 [19818] dynamic-link: Absolute (SHN_ABS) symbols incorrectly relocated by
324 [20079] libc: Add SHT_X86_64_UNWIND to elf.h
325 [20251] libc: 32bit programs pass garbage in struct flock for OFD locks
326 [20419] dynamic-link: files with large allocated notes crash in
328 [20530] libc: bswap_16 should use __builtin_bswap16() when available
329 [20890] dynamic-link: ldconfig: fsync the files before atomic rename
330 [20980] manual: CFLAGS environment variable replaces vital options
331 [21163] regex: Assertion failure in pop_fail_stack when executing a
332 malformed regexp (CVE-2015-8985)
333 [21234] manual: use of CFLAGS makes glibc detect no optimization
334 [21269] dynamic-link: i386 sigaction sa_restorer handling is wrong
335 [21313] build: Compile Error GCC 5.4.0 MIPS with -0S
336 [21314] build: Compile Error GCC 5.2.0 MIPS with -0s
337 [21508] locale: intl/tst-gettext failure with latest msgfmt
338 [21547] localedata: Tibetan script collation broken (Dzongkha and Tibetan)
339 [21812] network: getifaddrs() returns entries with ifa_name == NULL
340 [21895] libc: ppc64 setjmp/longjmp not fully interoperable with static
342 [21942] dynamic-link: _dl_dst_substitute incorrectly handles $ORIGIN: with
344 [22241] localedata: New locale: Yakut (Sakha) locale for Russia (sah_RU)
345 [22247] network: Integer overflow in the decode_digit function in
346 puny_decode.c in libidn (CVE-2017-14062)
347 [22342] nscd: NSCD not properly caching netgroup
348 [22391] nptl: Signal function clear NPTL internal symbols inconsistently
349 [22550] localedata: es_ES locale (and other es_* locales): collation
350 should treat ñ as a primary different character, sync the collation
351 for Spanish with CLDR
352 [22638] dynamic-link: sparc: static binaries are broken if glibc is built
353 by gcc configured with --enable-default-pie
354 [22639] time: year 2039 bug for localtime etc. on 64-bit platforms
355 [22644] string: memmove-sse2-unaligned on 32bit x86 produces garbage when
356 crossing 2GB threshold (CVE-2017-18269)
357 [22646] localedata: redundant data (LC_TIME) for es_CL, es_CU, es_EC and
359 [22735] time: Misleading typo in time.h source comment regarding
361 [22753] libc: preadv2/pwritev2 fallback code should handle offset=-1
362 [22761] libc: No trailing `%n' conversion specifier in FMT passed from
363 `__assert_perror_fail ()' to `__assert_fail_base ()'
364 [22766] libc: all glibc internal dlopen should use RTLD_NOW for robust
366 [22786] libc: Stack buffer overflow in realpath() if input size is close
367 to SSIZE_MAX (CVE-2018-11236)
368 [22787] dynamic-link: _dl_check_caller returns false when libc is linked
369 through an absolute DT_NEEDED path
370 [22792] build: tcb-offsets.h dependency dropped
371 [22797] libc: pkey_get() uses non-reserved name of argument
372 [22807] libc: PTRACE_* constants missing for powerpc
373 [22818] glob: posix/tst-glob_lstat_compat failure on alpha
374 [22827] dynamic-link: RISC-V ELF64 parser mis-reads flag in ldconfig
375 [22830] malloc: malloc_stats doesn't restore cancellation state on stderr
376 [22848] localedata: ca_ES: update date definitions from CLDR
377 [22862] build: _DEFAULT_SOURCE is defined even when _ISOC11_SOURCE is
378 [22884] math: RISCV fmax/fmin handle signalling NANs incorrectly
379 [22896] localedata: Update locale data for an_ES
380 [22902] math: float128 test failures with GCC 8
381 [22918] libc: multiple common of `__nss_shadow_database'
382 [22919] libc: sparc32: backtrace yields infinite backtrace with
384 [22926] libc: FTBFS on powerpcspe
385 [22932] localedata: lt_LT: Update of abbreviated month names from CLDR
387 [22937] localedata: Greek (el_GR, el_CY) locales actually need ab_alt_mon
388 [22947] libc: FAIL: misc/tst-preadvwritev2
389 [22963] localedata: cs_CZ: Add alternative month names
390 [22987] math: [powerpc/sparc] fdim inlines errno, exceptions handling
391 [22996] localedata: change LC_PAPER to en_US in es_BO locale
392 [22998] dynamic-link: execstack tests are disabled when SELinux is
394 [23005] network: Crash in __res_context_send after memory allocation
396 [23007] math: strtod cannot handle -nan
397 [23024] nss: getlogin_r is performing NSS lookups when loginid isn't set
398 [23036] regex: regex equivalence class regression
399 [23037] libc: initialize msg_flags to zero for sendmmsg() calls
400 [23069] libc: sigaction broken on riscv64-linux-gnu
401 [23094] localedata: hr_HR: wrong thousands_sep and mon_thousands_sep
402 [23102] dynamic-link: Incorrect parsing of multiple consecutive $variable
403 patterns in runpath entries (e.g. $ORIGIN$ORIGIN)
404 [23137] nptl: s390: pthread_join sometimes block indefinitely (on 31bit
405 and libc build with -Os)
406 [23140] localedata: More languages need two forms of month names
407 [23145] libc: _init/_fini aren't marked as hidden
408 [23152] localedata: gd_GB: Fix typo in "May" (abbreviated)
409 [23171] math: C++ iseqsig for long double converts arguments to double
410 [23178] nscd: sudo will fail when it is run in concurrent with commands
411 that changes /etc/passwd
412 [23196] string: __mempcpy_avx512_no_vzeroupper mishandles large copies
414 [23206] dynamic-link: static-pie + dlopen breaks debugger interaction
415 [23208] localedata: New locale - Lower Sorbian (dsb)
416 [23233] regex: Memory leak in build_charclass_op function in file
418 [23236] stdio: Harden function pointers in _IO_str_fields
419 [23250] nptl: Offset of __private_ss differs from GCC
420 [23253] math: tgamma test suite failures on i686 with -march=x86-64
421 -mtune=generic -mfpmath=sse
422 [23259] dynamic-link: Unsubstituted ${ORIGIN} remains in DT_NEEDED for
424 [23264] libc: posix_spawnp wrongly executes ENOEXEC in non compat mode
425 [23266] nis: stringop-truncation warning with new gcc8.1 in nisplus-
427 [23272] math: fma(INFINITY,INFIITY,0.0) should be INFINITY
428 [23277] math: nan function should not have const attribute
429 [23279] math: scanf and strtod wrong for some hex floating-point
430 [23280] math: wscanf rounds wrong; wcstod is ok for negative numbers and
432 [23290] localedata: IBM273 is not equivalent to ISO-8859-1
433 [23303] build: undefined reference to symbol
434 '__parse_hwcap_and_convert_at_platform@@GLIBC_2.23'
435 [23307] dynamic-link: Absolute symbols whose value is zero ignored in
437 [23313] stdio: libio vtables validation and standard file object
439 [23329] libc: The __libc_freeres infrastructure is not properly run across
441 [23349] libc: Various glibc headers no longer compatible with
443 [23351] malloc: Remove unused code related to heap dumps and malloc
445 [23363] stdio: stdio-common/tst-printf.c has non-free license
446 [23396] regex: Regex equivalence regression in single-byte locales
447 [23422] localedata: oc_FR: More updates of locale data
448 [23442] build: New warning with GCC 8
449 [23448] libc: Out of bounds access in IBM-1390 converter
450 [23456] libc: Wrong index_cpu_LZCNT
451 [23458] build: tst-get-cpu-features-static isn't added to tests
452 [23459] libc: COMMON_CPUID_INDEX_80000001 isn't populated for Intel
454 [23467] dynamic-link: x86/CET: A property note parser bug
461 * The GNU C Library can now be compiled with support for building static
462 PIE executables (See --enable-static-pie in INSTALL). These static PIE
463 executables are like static executables but can be loaded at any address
464 and provide additional security hardening benefits at the cost of some
465 memory and performance. When the library is built with --enable-static-pie
466 the resulting libc.a is usable with GCC 8 and above to create static PIE
467 executables using the GCC option '-static-pie'. This feature is currently
468 supported on i386, x86_64 and x32 with binutils 2.29 or later, and on
469 aarch64 with binutils 2.30 or later.
471 * Optimized x86-64 asin, atan2, exp, expf, log, pow, atan, sin, cosf,
472 sinf, sincosf and tan with FMA, contributed by Arjan van de Ven and
475 * Optimized x86-64 trunc and truncf for processors with SSE4.1.
477 * Optimized generic expf, exp2f, logf, log2f, powf, sinf, cosf and sincosf.
479 * In order to support faster and safer process termination the malloc API
480 family of functions will no longer print a failure address and stack
481 backtrace after detecting heap corruption. The goal is to minimize the
482 amount of work done after corruption is detected and to avoid potential
483 security issues in continued process execution. Reducing shutdown time
484 leads to lower overall process restart latency, so there is benefit both
485 from a security and performance perspective.
487 * The abort function terminates the process immediately, without flushing
488 stdio streams. Previous glibc versions used to flush streams, resulting
489 in deadlocks and further data corruption. This change also affects
490 process aborts as the result of assertion failures.
492 * On platforms where long double has the IEEE binary128 format (aarch64,
493 alpha, mips64, riscv, s390 and sparc), the math library now implements
494 _Float128 interfaces for that type, as defined by ISO/IEC TS 18661-3:2015.
495 These are the same interfaces added in version 2.26 for some platforms where
496 this format is supported but is not the format of long double.
498 * On platforms with support for _Float64x (aarch64, alpha, i386, ia64,
499 mips64, powerpc64le, riscv, s390, sparc and x86_64), the math library now
500 implements interfaces for that type, as defined by ISO/IEC TS
501 18661-3:2015. These are corresponding interfaces to those supported for
504 * The math library now implements interfaces for the _Float32, _Float64 and
505 _Float32x types, as defined by ISO/IEC TS 18661-3:2015. These are
506 corresponding interfaces to those supported for _Float128.
508 * glibc now implements the memfd_create and mlock2 functions on Linux.
510 * Support for memory protection keys was added. The <sys/mman.h> header now
511 declares the functions pkey_alloc, pkey_free, pkey_mprotect, pkey_set,
514 * The copy_file_range function was added.
516 * Optimized memcpy, mempcpy, memmove, and memset for sparc M7.
518 * The ldconfig utility now processes `include' directives using the C/POSIX
519 collation ordering. Previous glibc versions used locale-specific
520 ordering, the change might break systems that relied on that.
522 * Support for two grammatical forms of month names has been added.
523 In a call to strftime, the "%B" and "%b" format specifiers will now
524 produce the grammatical form required when the month is used as part
525 of a complete date. New "%OB" and "%Ob" specifiers produce the form
526 required when the month is named by itself. For instance, in Greek
527 and in many Slavic and Baltic languages, "%B" will produce the month
528 in genitive case, and "%OB" will produce the month in nominative case.
530 In a call to strptime, "%B", "%b", "%h", "%OB", "%Ob", and "%Oh"
531 are all valid and will all accept any known form of month
532 name---standalone or complete, abbreviated or full. In a call to
533 nl_langinfo, the query constants MON_1..12 and ABMON_1..12 return
534 the strings used by "%B" and "%b", respectively. New query
535 constants ALTMON_1..12 and _NL_ABALTMON_1..12 return the strings
536 used by "%OB" and "%Ob", respectively.
538 In a locale definition file, use "alt_mon" and "ab_alt_mon" to
539 define the strings for %OB and %Ob, respectively; these have the
540 same syntax as "mon" and "abmon". These arrays are optional; if they
541 are not provided then they have the same content as "mon" and "abmon",
544 These features are provided for locales which define "alt_mon" and/or
545 "ab_alt_mon" in their locale source data. This release includes such
546 alternative month name data for the following languages: Belarusian,
547 Croatian, Greek, Lithuanian, Polish, Russian, and Ukrainian.
549 This feature is currently a GNU extension, but it is expected to
550 be added to the next revision of POSIX, and it is also already
551 available on some BSD-derived operating systems.
553 This feature will cause existing statically compiled applications
554 to fail to load locales and fall back to the builtin C/POSIX locales.
555 See notes below for other changes affecting compatibility.
557 * Support for the RISC-V ISA running on Linux has been added. This port
558 requires at least binutils-2.30, gcc-7.3.0, and linux-4.15; and is supported
559 for the following ISA and ABI pairs:
565 Deprecated and removed features, and other changes affecting compatibility:
567 * Statically compiled applications attempting to load locales compiled for the
568 GNU C Library version 2.27 will fail and fall back to the builtin C/POSIX
569 locale. The reason for this is that the addition of the new "%OB" and "%Ob",
570 support for two grammatical forms of the month names, also extends the locale
571 data binary format. Static applications needing locale support must be
572 recompiled to match the runtime and data they are deployed with. In some
573 distributions there is an upgrade window where dynamically linked applications
574 may use a new library but the old locale data and also fall back to the
575 builtin C/POSIX locales; restarting the application process is sufficient to
578 * Support for statically linked applications which call dlopen is deprecated
579 and will be removed in a future version of glibc. Applications which call
580 dlopen need to be linked dynamically instead.
582 * Support for old programs which use internal stdio data structures and
583 functions is deprecated. This includes programs which use the C++ streams
584 provided by libstdc++ in GCC 2.95. Programs which use the internal
585 symbols _IO_adjust_wcolumn, _IO_default_doallocate, _IO_default_finish,
586 _IO_default_pbackfail, _IO_default_uflow, _IO_default_xsgetn,
587 _IO_default_xsputn, _IO_doallocbuf, _IO_do_write, _IO_file_attach,
588 _IO_file_close, _IO_file_close_it, _IO_file_doallocate, _IO_file_fopen,
589 _IO_file_init, _IO_file_jumps, _IO_fileno, _IO_file_open,
590 _IO_file_overflow, _IO_file_read, _IO_file_seek, _IO_file_seekoff,
591 _IO_file_setbuf, _IO_file_stat, _IO_file_sync, _IO_file_underflow,
592 _IO_file_write, _IO_file_xsputn, _IO_flockfile, _IO_flush_all,
593 _IO_flush_all_linebuffered, _IO_free_backup_area, _IO_free_wbackup_area,
594 _IO_init, _IO_init_marker, _IO_init_wmarker, _IO_iter_begin, _IO_iter_end,
595 _IO_iter_file, _IO_iter_next, _IO_least_wmarker, _IO_link_in,
596 _IO_list_all, _IO_list_lock, _IO_list_resetlock, _IO_list_unlock,
597 _IO_marker_delta, _IO_marker_difference, _IO_remove_marker, _IO_seekmark,
598 _IO_seekwmark, _IO_str_init_readonly, _IO_str_init_static,
599 _IO_str_overflow, _IO_str_pbackfail, _IO_str_seekoff, _IO_str_underflow,
600 _IO_switch_to_main_wget_area, _IO_switch_to_wget_mode,
601 _IO_unsave_wmarkers, _IO_wdefault_doallocate, _IO_wdefault_finish,
602 _IO_wdefault_pbackfail, _IO_wdefault_setbuf, _IO_wdefault_uflow,
603 _IO_wdefault_xsgetn, _IO_wdefault_xsputn, _IO_wdoallocbuf, _IO_wdo_write,
604 _IO_wfile_jumps, _IO_wfile_overflow, _IO_wfile_sync, _IO_wfile_underflow,
605 _IO_wfile_xsputn, _IO_wmarker_delta, or _IO_wsetb may stop working with a
606 future version of glibc. Unlike other symbol removals, these old
607 applications will not be supported using compatibility symbols.
609 * On GNU/Linux, the obsolete Linux constant PTRACE_SEIZE_DEVEL is no longer
610 defined by <sys/ptrace.h>.
612 * libm no longer supports SVID error handling (calling a user-provided
613 matherr function on error) or the _LIB_VERSION variable to control error
614 handling. (SVID error handling and the _LIB_VERSION variable still work
615 for binaries linked against older versions of the GNU C Library.) The
616 libieee.a library is no longer provided. math.h no longer defines struct
617 exception, or the macros X_TLOSS, DOMAIN, SING, OVERFLOW, UNDERFLOW,
618 TLOSS, PLOSS and HUGE.
620 * The libm functions pow10, pow10f and pow10l are no longer supported for
621 new programs. Programs should use the standard names exp10, exp10f and
622 exp10l for these functions instead.
624 * The mcontext_t type is no longer the same as struct sigcontext. On
625 platforms where it was previously the same, this changes the C++ name
626 mangling for interfaces involving this type.
628 * The add-ons mechanism for building additional packages at the same time as
629 glibc has been removed. The --enable-add-ons configure option is now
632 * The --without-fp configure option is now ignored. Whether hardware
633 floating-point instructions are used is now configured based on whether
634 the compiler used at configure time (without any options implied by a
635 --with-cpu= configure option) uses such instructions.
637 * The res_hnok, res_dnok, res_mailok and res_ownok functions now check that
638 the specified string can be parsed as a domain name.
640 * In the malloc_info output, the <heap> element may contain another <aspace>
641 element, "subheaps", which contains the number of sub-heaps.
643 * The libresolv function p_secstodate is no longer supported for new
646 * The tilepro-*-linux-gnu configuration is no longer supported.
648 * The nonstandard header files <libio.h> and <_G_config.h> are deprecated
649 and will be removed in a future release. Software that is still using
650 either header should be updated to use standard <stdio.h> interfaces
653 libio.h was originally the header for a set of supported GNU extensions,
654 but they have not been maintained as such in many years, they are now
655 standing in the way of improvements to stdio, and we don't think there are
656 any remaining external users. _G_config.h was never intended for public
657 use, but predates the bits convention.
659 Changes to build and runtime requirements:
661 * bison version 2.7 or later is required to generate code in the 'intl'
664 Security related changes:
666 CVE-2009-5064: The ldd script would sometimes run the program under
667 examination directly, without preventing code execution through the
668 dynamic linker. (The glibc project disputes that this is a security
669 vulnerability; only trusted binaries must be examined using the ldd
672 CVE-2017-15670: The glob function, when invoked with GLOB_TILDE,
673 suffered from a one-byte overflow during ~ operator processing (either
674 on the stack or the heap, depending on the length of the user name).
675 Reported by Tim Rühsen.
677 CVE-2017-15671: The glob function, when invoked with GLOB_TILDE,
678 would sometimes fail to free memory allocated during ~ operator
679 processing, leading to a memory leak and, potentially, to a denial
682 CVE-2017-15804: The glob function, when invoked with GLOB_TILDE and
683 without GLOB_NOESCAPE, could write past the end of a buffer while
684 unescaping user names. Reported by Tim Rühsen.
686 CVE-2017-17426: The malloc function, when called with an object size near
687 the value SIZE_MAX, would return a pointer to a buffer which is too small,
688 instead of NULL. This was a regression introduced with the new malloc
689 thread cache in glibc 2.26. Reported by Iain Buclaw.
691 CVE-2017-1000408: Incorrect array size computation in _dl_init_paths leads
692 to the allocation of too much memory. (This is not a security bug per se,
693 it is mentioned here only because of the CVE assignment.) Reported by
696 CVE-2017-1000409: Buffer overflow in _dl_init_paths due to miscomputation
697 of the number of search path components. (This is not a security
698 vulnerability per se because no trust boundary is crossed if the fix for
699 CVE-2017-1000366 has been applied, but it is mentioned here only because
700 of the CVE assignment.) Reported by Qualys.
702 CVE-2017-16997: Incorrect handling of RPATH or RUNPATH containing $ORIGIN
703 for AT_SECURE or SUID binaries could be used to load libraries from the
706 CVE-2018-1000001: Buffer underflow in realpath function when getcwd function
707 succeeds without returning an absolute path due to unexpected behaviour
708 of the Linux kernel getcwd syscall. Reported by halfdog.
710 CVE-2018-6485: The posix_memalign and memalign functions, when called with
711 an object size near the value of SIZE_MAX, would return a pointer to a
712 buffer which is too small, instead of NULL. Reported by Jakub Wilk.
714 CVE-2018-6551: The malloc function, when called with an object size near
715 the value of SIZE_MAX, would return a pointer to a buffer which is too
716 small, instead of NULL.
718 The following bugs are resolved with this release:
720 [866] glob: glob should match dangling symlinks
721 [1062] glob: sysdeps/generic/glob.c merge from gnulib (part 3 of 3)
722 [2522] localedata: ca_ES@valencia: new Valencian (meridional Catalan)
724 [5997] math: Very slow execution of sinf function
725 [10580] localedata: hr_HR: updated locale
726 [10871] locale: 'mon' array should contain both nominative and genitive
728 [12349] localedata: eu_ES: incorrect thousands separator
729 [13605] localedata: shn_MM: new Shan locale
730 [13805] localedata: ru_RU: currency should use ',' as radix point
731 [13953] localedata: km_KH: locale update
732 [13994] localedata: mjw_IN: new locale
733 [14121] build: make writes .mo files in po directory
734 [14333] libc: Fix the race between atexit() and exit()
735 [14681] dynamic-link: _dl_get_origin leaks memory via executable link map.
736 [14925] localedata: bn_*: LC_IDENTIFICATION.language key should be
738 [15260] localedata: LC_MESSAGES.{yes,no}{str,expr}: various errors
739 [15261] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of full-
740 width Latin characters
741 [15332] localedata: es_CU: locale update
742 [15436] stdio: Don't close or flush stdio streams on abort
743 [15537] localedata: lv_LV: invalid collation for Latvian diacritical
745 [16148] localedata: ca_ES: incorrect thousands separator
746 [16750] dynamic-link: ldd should not try to execute the binaries
748 [16777] localedata: pl_PL: incorrect thousands separator in locale
749 [16905] localedata: hanzi: new collation
750 [17563] localedata: cmn_TW: add hanzi collation
751 [17750] localedata: wrong collation order of diacritics in most locales
752 [17804] libc: scandirat fails with ENOMEM because it checks for errno even
754 [17956] build: Build fails on missing definitions from header file
755 nss/nss.h when Mozilla NSS is used for cryptography
756 [18203] libc: realpath() does not handle unreachable paths correctly
757 [18572] dynamic-link: [arm] Lazy TLSDESC relocation has data race
758 [18812] localedata: kab_DZ: new Kabyle Algeria locale
759 [18822] libc: Internal functions are called via PLT
760 [18858] string: _HAVE_STRING_ARCH_xxx aren't defined for i386 nor x86_64
761 [19170] libc: __gmon_start__ defined in hppa in crtn.S
762 [19574] libc: glibc should support building static PIE binaries
763 [19852] localedata: charmaps/UTF-8: incorrect wcwidth for U+3099 and
765 [19971] glob: glob: Do not skip entries with zero d_ino values
766 [19982] localedata: fr.po: spelling mistake for error code EXDEV
767 [20008] localedata: km_KH: convert to translit_neutral
768 [20009] localedata: tr_TR: convert LC_CTYPE to i18n
769 [20142] math: [x86_64] Add SSE4.1 trunc, truncf
770 [20204] dynamic-link: _dl_open_hook and _dlfcn_hook hardening
771 [20482] localedata: de_CH: abbreviated weekdays should be two letters
772 [20498] localedata: miq_NI: new Mískitu / Miskito (miq) language locale
774 [20532] nss: getaddrinfo uses errno and h_errno without guaranteeing
775 they're set, wrong errors returned by gaih_inet when lookup functions
777 [20756] localedata: [PATCH] Use Unicode wise thousands separator
778 [20826] network: posix/tst-getaddrinfo5 fails on hosts without network
780 [20952] localedata: yuw_PG: new locale
781 [21084] localedata: charmaps/IBM858: new codepage
782 [21161] manual: [PATCH] fix typo in manual/arith.texi on strtoul prototype
783 [21242] libc: assert gives pedantic warning in old gcc versions
784 [21265] dynamic-link: _dl_runtime_resolve isn't compatible with Intel C++
785 __regcall calling convention
786 [21309] math: signed integer overflow in sysdeps/ieee754/dbl-64/e_pow.c
787 [21326] libc: C99 functions are not declared for C++11 and later if
788 _GNU_SOURCE is not predefined by g++
789 [21457] libc: sys/ucontext.h namespace
790 [21530] libc: tmpfile() should be implemented using O_TMPFILE
791 [21660] math: GCC fails to compile a formula with tgmath.h
792 [21672] nptl: sys-libs/glibc on ia64 crashes on thread exit: signal
793 SIGSEGV, Segmentation fault: pthread_create.c:432: __madvise
794 (pd->stackblock, freesize - PTHREAD_STACK_MIN, MADV_DONTNEED);
795 [21684] math: tgmath.h handling of complex integers
796 [21685] math: tgmath.h handling of bit-fields
797 [21686] math: tgmath.h handling of __int128
798 [21706] localedata: yesstr and nostr are missing for Breton [LC_MESSAGES]
800 [21745] libc: [powerpc64le] Extra PLT reference with --enable-stack-
802 [21750] localedata: column width of characters incompatible with classical
804 [21754] malloc: malloc: Perform as little work as possible after heap
805 consistency check failures
806 [21780] libc: hppa: p{read,write}v2 does not set ENOSUP on invalid flag
807 [21790] libc: Missing __memset_zero_constant_len_parameter in libc.so
808 [21791] string: Unused XXX_chk_XXX functions in libc.a
809 [21815] dynamic-link: FAIL: elf/tst-prelink-cmp with GCC is defaulted to
811 [21836] localedata: Removed redundant data (LC_MONETARY) in various Indian
813 [21845] localedata: Added new Locale bho_NP
814 [21853] localedata: Fix abday Which looks same as day in zh_SG
815 [21854] localedata: Added New Locale en_SC
816 [21864] libc: xmalloc.o is compiled with -DMODULE_NAME=libc
817 [21871] dynamic-link: _dl_runtime_resolve_avx_opt is slower than
818 _dl_runtime_resolve_avx_slow
819 [21885] network: getaddrinfo: gethosts does not release resolver context
820 on memory allocation failure
821 [21899] libc: XPG4.2 sigaction namespace
822 [21908] dynamic-link: dynamic linker broke on ia64 (mmap2 consolidation is
824 [21913] libc: static binaries SIGSEGV in __brk when host's gcc is pie-by-
826 [21915] nss: nss_files can return with NSS_STATUS_SUCCESS and a clobbered
827 errno value, causing getaddrinfo to fail
828 [21920] localedata: Fix p_cs_precedes/n_cs_precedes for mt_MT
829 [21922] network: getaddrinfo with AF_INET/AF_INET6 returns EAI_NONAME
830 instead of EAI_NODATA
831 [21928] libc: sys/ptrace.h: remove obsolete temporary development Linux
832 constant PTRACE_SEIZE_DEVEL
833 [21930] math: C-only gcc builtins used in <math.h> isinf
834 [21932] network: Unpaired __resolv_context_get in generic get*_r
836 [21941] math: powerpc: Wrong register constraint for xssqrtqp in sqrtf128
837 [21944] libc: sigval namespace
838 [21951] localedata: Update hanzi collation by stroke
839 [21955] math: Wrong alignment of L(SP_RANGE)/L(SP_INF_0) in
840 sysdeps/x86_64/fpu/e_expf.S
841 [21956] libc: Stack allocation in MIPS syscall impl (ubounded stack
842 allocation in syscall loops)
843 [21959] localedata: Fix Country name for xh_ZA
844 [21960] localedata: Fix abmon for bem_ZM
845 [21966] math: AVX2 mathvec functions use FMA without checking
846 [21967] math: When 512-bit AVX2 wrapper functions in mathvec are used?
847 [21971] localedata: Added New Locale for mfe_MU
848 [21972] libc: assert macro requires operator== (int) for its argument type
849 [21973] math: [sparc] libm missing sqrtl compat symbol
850 [21974] libc: Remove __bb_init_func and __bb_exit_func
851 [21982] string: stratcliff.c: error: assuming signed overflow does not
853 [21986] stdio: __guess_grouping is called incorrectly
854 [21987] math: [sparc32] wrong bits/long-double.h installed
855 [22019] localedata: Wrong placement of monetary symbol in el_GR (negative
857 [22022] localedata: Missing country_name for mni_IN
858 [22023] localedata: Removed redundant data (LC_TIME and LC_MESSAGES) for
860 [22025] locale: iconv: Inconsistency between pointer mangling and NULL
862 [22026] locale: iconv_open: heap overflow on gconv_init failure
863 [22028] math: bits/math-finite.h _MSUF_ expansion namespace
864 [22035] math: [m68k] bits/math-inline.h macro namespace
865 [22038] localedata: Fix abbreviated weeks and months for Somali
866 [22044] localedata: Remove redundant data for Limburgish Language
867 [22050] malloc: Linking with -lmcheck does not hook
868 __malloc_initialize_hook correctly
869 [22051] libc: zero terminator in the middle of glibc's .eh_frame
870 [22052] malloc: malloc failed to compile with GCC 7 and -O3
871 [22070] localedata: charmaps/UTF-8: wcwidth for
872 Prepended_Concatenation_Mark codepoints set to 0 (should be 1)
873 [22074] localedata: charmaps/UTF-8: wcwidth for U+1160-U+11FF (Hangul
874 Jungseong and Jongseong) should be 0
875 [22078] nss: nss_files performance issue in multi mode
876 [22082] math: bits/math-finite.h exp10 condition
877 [22086] libc: pcprofiledump incorrect cross-endian condition
878 [22093] dynamic-link: ld.so no longer searches in .../x86_64
879 [22095] network: Name server address allocation memory leak in resolv.conf
881 [22096] network: __resolv_conf_attach can incorrectly free passed conf
883 [22100] localedata: om_KE: LC_TIME: copy redundant data from om_ET
884 [22101] dynamic-link: Dynamic loader must ignore "debug" shared objects
886 [22111] malloc: malloc: per thread cache is not returned when thread exits
887 [22112] localedata: Fix LC_TELEPHONE/LC_NAME for az_AZ
888 [22134] libc: [linux] implement fexecve with execveat
889 [22142] libc: [powerpc] printf oupts a wrong value of DBL_MAX on ppc64 and
891 [22145] libc: ttyname() gives up too early in the face of namespaces
892 [22146] math: C++ build issue with float128 on x86_64
893 [22153] nptl: nptl: save error code before process termination
894 [22156] libc: [hppa,ia64,microblaze] Executable stack default
895 [22159] malloc: malloc: MALLOC_CHECK_ broken with --enable-tunables=no
896 [22161] nscd: nscd cache prune for netgroups hangs after timeout bump
897 [22165] libc: [hppa] Text relocations in libc.so
898 [22180] libc: destructor registered via __cxa_atexit is called twice
899 [22183] glob: commit 5554304f0ddd ("posix: Allow glob to match dangling
900 symlinks") cause "make" segfaults
901 [22189] math: [powerpc] math_private.h definitions of math_opt_barrier and
903 [22207] libc: FAIL: stdlib/test-atexit-race
904 [22225] math: nearbyint arithmetic moved before feholdexcept
905 [22229] math: [sparc32] missing copysignl, fabsl, fmal compat symbols
906 [22235] math: iscanonical in C++ and float128
907 [22243] math: log2(0) and log10(0) are wrong in downward rounding without
908 the svid compat wrapper
909 [22244] math: ynf and yn are wrong without the svid compat wrapper
910 [22273] libc: Improper assert in Linux posix_spawn implementation
911 [22284] libc: -pg -pie doesn't work
912 [22292] locale: localedef exits with error 4 when it should be error 1
913 [22294] locale: Allow "" for int_currency_symbol definition in locales.
914 [22295] locale: Don't warn on non-symbolic characters in locale sources in
916 [22296] math: glibc 2.26: signbit build issue with Gcc 5.5.0 on x86_64
917 [22298] nptl: x32: lockups on recursive pthread_mutex_lock after upgrade
919 [22299] dynamic-link: Problem with $PLATFORM on x86_64 platform
920 [22320] glob: Buffer overflow in glob with GLOB_TILDE (CVE-2017-15670)
921 [22321] libc: sysconf(_SC_IOV_MAX) returns -1 on Linux
922 [22322] libc: [mips64] wrong bits/long-double.h installed
923 [22325] glob: Memory leak in glob with GLOB_TILDE (CVE-2017-15671)
924 [22332] glob: Buffer overflow in glob with GLOB_TILDE in unescaping
926 [22336] localedata: cs_CZ LC_COLLATE does not use i18n
927 [22343] malloc: Integer overflow in posix_memalign
928 [22347] libc: getrandom() returns the number of bytes that were copied to
929 the buffer even though the comments say "Return 0 on success and -1 on
931 [22353] string: sysdeps/i386/i586/strcpy.S isn't maintainable
932 [22362] libc: Installed crt1.o, crti,.o and crtn.o files are used with
934 [22370] dynamic-link: Incorrect note padding check
935 [22375] libc: malloc returns pointer from tcache_get when should return
936 NULL (CVE-2017-17426)
937 [22377] math: iseqsig, float128 and C++
938 [22382] localedata: Error in tpi_PG locale
939 [22387] localedata: Replace unicode sequences <Uxxxx> for characters
940 inside the ASCII printable range
941 [22402] math: [powerpc64le] __MATH_TG does not support _Float128 for
943 [22403] localedata: Slash needs escaping in some locales
944 [22408] malloc: malloc_info access heaps without arena lock, ignores heaps
945 [22409] network: res_hnok does not accept some host names used on the
947 [22412] network: res_dnok, res_hnok should perform syntax checks
948 [22413] network: ns_name_pton ignores syntactically invalid trailing
950 [22415] stdio: setvbuf can lead to invalid free/segfault
951 [22432] build: Non-deterministic build
952 [22439] malloc: malloc_info should compute summary statistics for all sub-
954 [22442] network: if_nametoindex could report index for the wrong
956 [22446] build: aliasing violation calling readlink in handle_request
957 [22447] build: unsafe call to strlen with a non-string in getlogin_r.c
958 [22457] libc: Generic preadv/pwritev incorrectly calls __posix_memalign
959 [22459] libc: FAIL: elf/check-localplt with __stack_chk_fail related to
960 __nscd_hash/__nss_hash
961 [22463] network: p_secstodate overflow handling
962 [22469] localedata: pl_PL LC_COLLATE does not use i18n
963 [22478] libc: sigwait can fail with EINTR
964 [22505] libc: ldconfig processes include directive in locale-specific
966 [22515] localedata: hsb_DE LC_COLLATE does not use copy "iso14651_t1"
967 [22517] localedata: et_EE LC_COLLATE does not use copy "iso14651_t1"
968 [22519] localedata: is_IS LC_COLLATE does not use copy "iso14651_t1"
969 [22524] localedata: lt_LT LC_COLLATE does not use copy "iso14651_t1"
970 [22527] localedata: tr_TR LC_COLLATE does not use copy "iso14651_t1"
971 [22534] localedata: Collation rules for Serbian and Bosnian should be the
973 [22561] math: [DR#471] cacosh (0 + iNaN) should return NaN +/- i pi/2
974 [22568] math: [DR#471] ctanh (0 + iNaN), ctanh (0 + i Inf)
975 [22577] libc: missing newline after "cannot allocate TLS data structures
977 [22588] manual: manual/conf.texi: missing underscore in front of
979 [22593] math: nextafter and nexttoward are declared with const attribute
980 [22596] manual: manual: finite(nan) wrongly described as returning nonzero
981 [22603] string: ia64 memchr overflows internal pointer check
982 [22605] libc: SH clone does not set the exit code correctly
983 [22606] dynamic-link: Incorrect array size computation in _dl_init_paths
985 [22607] dynamic-link: Buffer Overflow in _dl_init_paths (CVE-2017-1000409)
986 [22611] malloc: malloc/tst-realloc wrongly assumes that errno must not be
987 modified in case of success
988 [22614] build: gcc: error: unrecognized command line option ‘-no-pie’
989 [22615] manual: manual: ambiguous wording about errno value in case of
991 [22624] libc: MIPS setjmp() saves incorrect 'o0' register in --enable-
993 [22625] dynamic-link: RPATH $ORIGIN replaced by PWD for AT_SECURE/SUID
994 binaries or if /proc is not mounted (CVE-2017-16997)
995 [22627] dynamic-link: $ORIGIN in $LD_LIBRARY_PATH is substituted twice
996 [22630] build: $(no-pie-ldflag) is no longer effective
997 [22631] math: [m68k] Bad const attributes in bits/mathinline.h
998 [22635] nptl: pthread_self returns NULL before libpthread is loaded
999 [22636] nptl: PTHREAD_STACK_MIN is too small on x86-64
1000 [22637] nptl: guard size is subtracted from thread stack size instead of
1002 [22648] libc: getrlimit/setrlimit with RLIM_INFINITY broken on alpha
1003 [22657] localedata: hu_HU: Avoid double space in date
1004 [22660] math: fmax, fmin sNaN handling on alpha
1005 [22664] libc: New warning of GCC8
1006 [22665] math: alpha: ceil and floor raise inexact exceptions
1007 [22666] math: alpha: trunc raise inexact exceptions
1008 [22667] libc: makecontext lacks stack alignment on i386
1009 [22678] libc: prlimit fails for RLIM_INFINITY values on 32-bit machines
1010 [22679] libc: getcwd(3) can succeed without returning an absolute path
1012 [22685] libc: PowerPC: Static AT_SECURE binaries segfault with lock-
1013 elision and tunables
1014 [22687] math: [powerpc-nofpu] complex long double functions spurious
1016 [22688] math: [powerpc-nofpu] remainderl wrong sign of zero result
1017 [22690] math: [ldbl-128ibm] lrintl, lroundl missing "invalid" exceptions
1018 [22691] math: [powerpc-nofpu] fmaxmagl, fminmagl spurious "invalid"
1020 [22693] math: [ldbl-128ibm] log1pl (-qNaN) spurious "invalid" exception
1021 [22697] math: [powerpc] llround spurious "inexact" exceptions on 32-bit
1023 [22701] nis: Incomplete removal of libnsl
1024 [22702] math: [powerpc-nofpu] nearbyintl traps with trapping "inexact"
1025 [22707] libc: Missing defines in elf.h for DF_1_STUB and DF_1_PIE.
1026 [22715] dynamic-link: FAIL: elf/tst-audit10
1027 [22719] libc: Backtrace tests fail on hppa
1028 [22742] libc: [aarch64] mcontext_t __reserved field got renamed
1029 [22743] nptl: __pthread_register_cancel corrupts stack after f81ddabffd
1030 [22765] crypt: (struct crypt_data *data)->initialized is not set to zero
1031 before the first call to crypt_r () in crypt/badsalttest.c
1038 * A per-thread cache has been added to malloc. Access to the cache requires
1039 no locks and therefore significantly accelerates the fast path to allocate
1040 and free small amounts of memory. Refilling an empty cache requires locking
1041 the underlying arena. Performance measurements show significant gains in a
1042 wide variety of user workloads. Workloads were captured using a special
1043 instrumented malloc and analyzed with a malloc simulator. Contributed by
1044 DJ Delorie with the help of Florian Weimer, and Carlos O'Donell.
1046 * Unicode 10.0.0 Support: Character encoding, character type info, and
1047 transliteration tables are all updated to Unicode 10.0.0, using
1048 generator scripts contributed by Mike FABIAN (Red Hat).
1049 These updates cause user visible changes, especially the changes in
1050 wcwidth for many emoji characters cause problems when emoji sequences
1051 are rendered with pango, see for example:
1052 https://bugzilla.gnome.org/show_bug.cgi?id=780669#c5
1054 * Collation of Hungarian has been overhauled and is now consistent with "The
1055 Rules of Hungarian Orthography, 12th edition" (Bug 18934). Contributed by
1058 * Improvements to the DNS stub resolver, contributed by Florian Weimer:
1060 - The GNU C Library will now detect when /etc/resolv.conf has been
1061 modified and reload the changed configuration. The new resolver option
1062 “no-reload” (RES_NORELOAD) disables this behavior.
1064 - The GNU C Library now supports an arbitrary number of search domains
1065 (configured using the “search” directive in /etc/resolv.conf);
1066 previously, there was a hard limit of six domains. For backward
1067 compatibility, applications that directly modify the ‘_res’ global
1068 object are still limited to six search domains.
1070 - When the “rotate” (RES_ROTATE) resolver option is active, the GNU C
1071 Library will now randomly pick a name server from the configuration as a
1072 starting point. (Previously, the second name server was always used.)
1074 * The tunables feature is now enabled by default. This allows users to tweak
1075 behavior of the GNU C Library using the GLIBC_TUNABLES environment variable.
1077 * New function reallocarray, which resizes an allocated block (like realloc)
1078 to the product of two sizes, with a guaranteed clean failure upon integer
1079 overflow in the multiplication. Originally from OpenBSD, contributed by
1080 Dennis Wölfing and Rüdiger Sonderfeld.
1082 * New wrappers for the Linux-specific system calls preadv2 and pwritev2.
1083 These are extended versions of preadv and pwritev, respectively, taking an
1084 additional flags argument. The set of supported flags depends on the
1085 running kernel; full support currently requires kernel 4.7 or later.
1087 * posix_spawnattr_setflags now supports the flag POSIX_SPAWN_SETSID, to
1088 create a new session ID for the spawned process. This feature is
1089 scheduled to be added to the next major revision of POSIX; for the time
1090 being, it is available under _GNU_SOURCE.
1092 * errno.h is now safe to use from C-preprocessed assembly language on all
1093 supported operating systems. In this context, it will only define the
1094 Exxxx constants, as preprocessor macros expanding to integer literals.
1096 * On ia64, powerpc64le, x86-32, and x86-64, the math library now implements
1097 128-bit floating point as defined by ISO/IEC/IEEE 60559:2011 (IEEE
1098 754-2008) and ISO/IEC TS 18661-3:2015. Contributed by Paul E. Murphy,
1099 Gabriel F. T. Gomes, Tulio Magno Quites Machado Filho, and Joseph Myers.
1101 To compile programs that use this feature, the compiler must support
1102 128-bit floating point with the type name _Float128 (as defined by TS
1103 18661-3) or __float128 (the nonstandard name used by GCC for C++, and for
1104 C prior to version 7). _GNU_SOURCE or __STDC_WANT_IEC_60559_TYPES_EXT__
1105 must be defined to make the new interfaces visible.
1107 The new functions and macros correspond to those present for other
1108 floating-point types (except for a few obsolescent interfaces not
1109 supported for the new type), with F128 or f128 suffixes; for example,
1110 strtof128, HUGE_VAL_F128 and cosf128. Following TS 18661-3, there are no
1111 printf or scanf formats for the new type; the strfromf128 and strtof128
1112 interfaces should be used instead.
1114 Deprecated and removed features, and other changes affecting compatibility:
1116 * The synchronization that pthread_spin_unlock performs has been changed to
1117 now be equivalent to a C11 atomic store with release memory order to the
1118 spin lock's memory location. Previously, several (but not all)
1119 architectures used stronger synchronization (e.g., containing what is
1120 often called a full barrier). This change can improve performance, but
1121 may affect odd fringe uses of spin locks that depend on the previous
1122 behavior (e.g., using spin locks as atomic variables to try to implement
1123 Dekker's mutual exclusion algorithm).
1125 * The port to Native Client running on ARMv7-A (--host=arm-nacl) has been
1128 * Sun RPC is deprecated. The rpcgen program, librpcsvc, and Sun RPC headers
1129 will only be built and installed when the GNU C Library is configured with
1130 --enable-obsolete-rpc. This allows alternative RPC implementations, such
1131 as TIRPC or rpcsvc-proto, to be used.
1133 * The NIS(+) name service modules, libnss_nis, libnss_nisplus, and
1134 libnss_compat, are deprecated, and will not be built or installed by
1137 The NIS(+) support library, libnsl, is also deprecated. By default, a
1138 compatibility shared library will be built and installed, but not headers
1139 or development libraries. Only a few NIS-related programs require this
1140 library. (In particular, the GNU C Library has never required programs
1141 that use 'gethostbyname' to be linked with libnsl.)
1143 Replacement implementations based on TIRPC, which additionally support
1144 IPv6, are available from <https://github.com/thkukuk/>. The configure
1145 option --enable-obsolete-nsl will cause libnsl's headers, and the NIS(+)
1146 name service modules, to be built and installed.
1148 * The DNS stub resolver no longer performs EDNS fallback. If EDNS or DNSSEC
1149 support is enabled, the configured recursive resolver must support EDNS.
1150 (Responding to EDNS-enabled queries with responses which are not
1151 EDNS-enabled is fine, but FORMERR responses are not.)
1153 * res_mkquery and res_nmkquery no longer support the IQUERY opcode. DNS
1154 servers have not supported this opcode for a long time.
1156 * The _res_opcodes variable has been removed from libresolv. It had been
1157 exported by accident.
1159 * <string.h> no longer includes inline versions of any string functions,
1160 as this kind of optimization is better done by the compiler. The macros
1161 __USE_STRING_INLINES and __NO_STRING_INLINES no longer have any effect.
1163 * The nonstandard header <xlocale.h> has been removed. Most programs should
1164 use <locale.h> instead. If you have a specific need for the definition of
1165 locale_t with no other declarations, please contact
1166 libc-alpha@sourceware.org and explain.
1168 * The obsolete header <sys/ultrasound.h> has been removed.
1170 * The obsolete signal constant SIGUNUSED is no longer defined by <signal.h>.
1172 * The obsolete function cfree has been removed. Applications should use
1175 * The stack_t type no longer has the name struct sigaltstack. This changes
1176 the C++ name mangling for interfaces involving this type.
1178 * The ucontext_t type no longer has the name struct ucontext. This changes
1179 the C++ name mangling for interfaces involving this type.
1181 * On M68k GNU/Linux and MIPS GNU/Linux, the fpregset_t type no longer has
1182 the name struct fpregset. On Nios II GNU/Linux, the mcontext_t type no
1183 longer has the name struct mcontext. On SPARC GNU/Linux, the struct
1184 mc_fq, struct rwindow, struct fpq and struct fq types are no longer
1185 defined in sys/ucontext.h, the mc_fpu_t type no longer has the name struct
1186 mc_fpu, the gwindows_t type no longer has the name struct gwindows and the
1187 fpregset_t type no longer has the name struct fpu. This changes the C++
1188 name mangling for interfaces involving those types.
1190 * On S/390 GNU/Linux, the constants defined by <sys/ptrace.h> have been
1191 synced with the kernel:
1193 - PTRACE_GETREGS, PTRACE_SETREGS, PTRACE_GETFPREGS and PTRACE_SETFPREGS
1194 are not supported on this architecture and have been removed.
1196 - PTRACE_SINGLEBLOCK, PTRACE_SECCOMP_GET_FILTER, PTRACE_PEEKUSR_AREA,
1197 PTRACE_POKEUSR_AREA, PTRACE_GET_LAST_BREAK, PTRACE_ENABLE_TE,
1198 PTRACE_DISABLE_TE and PTRACE_TE_ABORT_RAND have been added.
1200 Programs that assume the GET/SETREGS ptrace requests are universally
1201 available will now fail to build, instead of malfunctioning at runtime.
1203 Changes to build and runtime requirements:
1205 * Linux kernel 3.2 or later is required at runtime, on all architectures
1206 supported by that kernel. (This is a change from version 2.25 only for
1209 * GNU Binutils 2.25 or later is now required to build the GNU C Library.
1211 * On most architectures, GCC 4.9 or later is required to build the GNU C
1212 Library. On powerpc64le, GCC 6.2 or later is required.
1214 Older GCC versions and non-GNU compilers are still supported when
1215 compiling programs that use the GNU C Library. (We do not know exactly
1216 how old, and some GNU extensions to C may be _de facto_ required. If you
1217 are interested in helping us make this statement less vague, please
1218 contact libc-alpha@sourceware.org.)
1220 Security related changes:
1222 * The DNS stub resolver limits the advertised UDP buffer size to 1200 bytes,
1223 to avoid fragmentation-based spoofing attacks (CVE-2017-12132).
1225 * LD_LIBRARY_PATH is now ignored in binaries running in privileged AT_SECURE
1226 mode to guard against local privilege escalation attacks (CVE-2017-1000366).
1228 * Avoid printing a backtrace from the __stack_chk_fail function since it is
1229 called on a corrupt stack and a backtrace is unreliable on a corrupt stack
1232 * A use-after-free vulnerability in clntudp_call in the Sun RPC system has been
1233 fixed (CVE-2017-12133).
1235 The following bugs are resolved with this release:
1237 [984] network: Respond to changed resolv.conf in gethostbyname
1238 [5010] network: sunrpc service cleanup causes unwanted port mapper traffic
1239 [12068] localedata: sc_IT: misspelled yesexpr/day/abday/mon/abmon/date_fmt
1241 [12189] libc: __stack_chk_fail should not attempt a backtrace
1243 [14096] time: Race condition on timezone/tst-timezone.out
1244 [14172] localedata: az_IR: new locale
1245 [14995] build: glibc fails to build if gold is the default linker, even if
1247 [15998] build: [powerpc] Set arch_minimum_kernel for powerpc LE
1248 [16637] network: inet_pton function is accepting IPv6 with bad format
1249 [16640] string: string/strtok.c: undefined behaviour inconsistent between
1250 x86 and other generic code
1251 [16875] localedata: ko_KR: fix lang_name
1252 [17225] localedata: ar_SY: localized month names for May and June are
1254 [17297] localedata: da_DK: wrong date_fmt string
1255 [18907] stdio: Incorrect order of __wur __THROW in <printf.h>
1256 [18934] localedata: hu_HU: collate: fix multiple bugs and add tests
1257 [18988] nptl: pthread wastes memory with mlockall(MCL_FUTURE)
1258 [19066] localedata: ar_SA abbreviated day and month names are in English
1259 [19569] network: resolv: Support an arbitrary number of search domains
1260 [19570] network: Implement random DNS server selection in the stub
1262 [19838] locale: localedef fails on PA-RISC
1263 [19919] localedata: iso14651_t1_common: Correct the Malayalam sorting
1264 order of 0D36 and 0D37
1265 [19922] localedata: iso14651_t1_common: Define collation for Malayalam
1267 [20098] libc: FAIL: debug/backtrace-tst on hppa
1268 [20257] network: sunrpc: clntudp_call does not enforce timeout when
1270 [20275] localedata: locale day/abday/mon/abmon should not have trailing
1272 [20313] localedata: Update locale data to Unicode 9.0
1273 [20424] manual: Document how to provide a malloc replacement
1274 [20496] localedata: agr_PE: new language locale Awajún / Aguaruna (agr)
1276 [20686] locale: Add el_GR@euro to SUPPORTED.
1277 [20831] dynamic-link: _dl_map_segments does not test for __mprotect
1278 failures consistently
1279 [21015] dynamic-link: Document and fix --enable-bind-now
1280 [21016] nptl: pthread_cond support is broken on hppa
1281 [21029] libc: glibc-2.23 (and later) fails to compile with -fno-omit-
1282 frame-pointer on i386
1283 [21049] libc: segfault in longjmp_chk() due to clobbered processor
1285 [21075] libc: unused assigment to %g4 in sparc/sparc{64,32}/clone.S
1286 [21088] libc: Build fails with --enable-static-nss
1287 [21094] math: cosf(1.57079697) has 3 ulp error on targets where the
1288 generic c code is used
1289 [21109] libc: Tunables broken on big-endian
1290 [21112] math: powf has large ulp errors with base close to 1 and exponent
1292 [21115] network: sunrpc: Use-after-free in error path in clntudp_call
1294 [21120] malloc: glibc malloc is incompatible with GCC 7
1295 [21130] math: Incorrect return from y0l (-inf) and y1l (-inf) when linking
1297 [21134] math: Exception (divide by zero) not set for y0/y1 (0.0) and y0/y1
1298 (-0.0) when linking with -lieee
1299 [21171] math: log10, log2 and lgamma return incorrect results
1300 [21179] libc: handle R_SPARC_DISP64 and R_SPARC_REGISTER relocs
1301 [21182] libc: __memchr_sse2: regression in glibc-2.25 on i686
1302 [21207] localedata: ce_RU: update weekdays from CLDR
1303 [21209] dynamic-link: LD_HWCAP_MASK read in setuid binaries
1304 [21217] localedata: Update months from CLDR-31
1305 [21232] libc: miss posix_fadvise64 on MIPS64 when static linking
1306 [21243] libc: support_delete_temp_file should issue warning for failed
1308 [21244] libc: support resolv_test_start() socket fd close should be
1310 [21253] libc: localedef randomly segfaults when using -fstack-check due to
1311 new posix_spawn implementation
1312 [21258] dynamic-link: Branch predication in _dl_runtime_resolve_avx512_opt
1313 leads to lower CPU frequency
1314 [21259] libc: [alpha] termios.h missing IXANY for POSIX
1315 [21261] libc: [sparc64] bits/setjmp.h namespace
1316 [21267] network: [mips] bits/socket.h IOC* namespace
1317 [21268] libc: [alpha] termios.h NL2, NL3 namespace
1318 [21270] libc: mmap64 silently truncates large offset values
1319 [21275] libc: posix_spawn always crashes on ia64 now
1320 [21277] libc: [alpha] termios.h missing IUCLC for UNIX98 and older
1321 [21280] math: [powerpc] logbl for POWER7 return incorrect results
1322 [21289] libc: Incorrect declaration for 32-bit platforms with
1323 _FILE_OFFSET_BITS=64 causes build error
1324 [21295] network: GETAI(AF_UNSPEC) drops IPv6 addresses if nss module does
1325 not support gethostbyname4_r
1326 [21298] nptl: rwlock can deadlock on frequent reader/writer phase
1328 [21338] malloc: mallopt M_ARENA_MAX doesn't set the maximum number of
1330 [21340] libc: Support POSIX_SPAWN_SETSID
1331 [21357] libc: unwind-dw2-fde deadlock when using AddressSanitizer
1332 [21359] network: ns_name_pack needs additional byte in destination buffer
1333 [21361] network: resolv: Reduce advertised EDNS0 buffer size to guard
1334 against fragmentation attacks (CVE-2017-12132)
1335 [21369] network: resolv: Remove EDNS fallback
1336 [21371] libc: Missing timespec definition when compiled with _XOPEN_SOURCE
1338 [21386] nptl: Assertion in fork for distinct parent PID is incorrect
1339 [21391] dynamic-link: x86: Set dl_platform and dl_hwcap from CPU features
1340 [21393] stdio: Missing dup3 error check in freopen, freopen64
1341 [21396] libc: Use AVX2 memcpy/memset on Skylake server
1342 [21399] localedata: Bad description for U00EC in
1343 localedata/charmaps/CP1254
1344 [21411] malloc: realloc documentation error
1345 [21426] network: sys/socket.h uio.h namespace
1346 [21428] libc: [aarch64] tst-backtrace5 testsuite failure
1347 [21445] libc: signal.h bsd_signal namespace
1348 [21455] network: Network headers stdint.h namespace
1349 [21474] network: resolv: res_init does not use RES_DFLRETRY (2) but 4 for
1351 [21475] network: resolv: Overlong search path is truncated mid-label
1352 [21511] libc: sigstack namespace
1353 [21512] libc: clone() ends up calling exit_group() through _exit() wrapper
1354 [21514] libc: sysdeps/unix/sysv/linux/sys/syscall.h:31:27: fatal error:
1355 bits/syscall.h: No such file or directory
1356 [21517] libc: struct sigaltstack namespace
1357 [21528] dynamic-link: Duplicated minimal strtoul implementations in ld.so
1358 [21533] localedata: Update locale data to Unicode 10.0
1360 ../sysdeps/unix/sysv/linux/s390/s390-32/__makecontext_ret.S:44: Error:
1361 junk at end of line, first unrecognized character is `@'
1362 [21538] libc: SIG_HOLD missing for XPG4
1363 [21539] libc: S390: Mismatch between kernel and glibc ptrace.h with
1364 request 12: PTRACE_SINGLEBLOCK vs PTRACE_GETREGS.
1365 [21542] libc: Use conservative default for sysconf (_SC_NPROCESSORS_ONLN)
1366 [21543] libc: sigevent namespace
1367 [21548] libc: [mips] get/set/make/swap context for MIPS O32 assume wrong
1368 size for general purpose registers in mcontext_t structure
1369 [21550] libc: sigwait namespace
1370 [21552] libc: XPG4 bsd_signal namespace
1371 [21554] libc: sigpause namespace
1372 [21560] libc: sys/wait.h signal.h namespace
1373 [21561] libc: waitid namespace
1374 [21573] nptl: GCC 7: /usr/bin/install: cannot remove
1375 '/usr/include/stdlib.h': Permission denied
1376 [21575] libc: sys/wait.h missing struct rusage definition
1377 [21584] libc: sigaltstack etc namespace
1378 [21597] libc: siginterrupt namespace
1379 [21607] math: hppa: FAIL: math/test-tgmath
1380 [21609] dynamic-link: Incomplete workaround for GCC __tls_get_addr ABI
1382 [21622] libc: [tile] missing SA_* for POSIX.1:2008
1383 [21624] dynamic-link: ld.so: Unsafe alloca allows local attackers to alias
1384 stack and heap (CVE-2017-1000366)
1385 [21625] libc: wait3 namespace
1386 [21654] nss: Incorrect pointer alignment in NSS group merge result
1388 [21657] network: Parse interface zone id for node-local multicast
1389 [21662] string: memcmp-avx2-movbe.S lacks saturating subtraction for
1391 [21666] libc: .symver is used on common symbol
1392 [21668] network: resolv: res_init cross-thread broadcast introduces race
1394 [21687] math: tgmath.h totalorder, totalordermag return type
1395 [21694] locale: Current Glibc Locale Does Not Support Tok-Pisin and Fiji
1397 [21696] libc: Incorrect assumption of of __cpu_mask in
1398 posix/sched_cpucount.c
1399 [21697] libc: sysdeps/posix/spawni.c: 2 * suspicious condition ?
1400 [21706] localedata: yesstr and nostr are missing for Breton [LC_MESSAGES]
1402 [21707] math: ppc64le: Invalid IFUNC resolver from libgcc calls getauxval,
1403 leading to relocation crash
1404 [21709] libc: resolv_conf.c:552: update_from_conf: Assertion
1405 `resolv_conf_matches (resp, conf)' failed.
1406 [21710] localedata: Added Samoan language locale for Samoa
1407 [21711] localedata: Pashto yesstr/nostr locale are missing
1408 [21715] nptl: sysdeps/nptl/bits/pthreadtypes.h: typedef guard
1409 __have_pthread_attr_t can cause redefinition of typedef ‘pthread_attr_t’
1410 [21721] localedata: Incorrect Full Weekday names for ks_IN@devanagari
1411 [21723] localedata: yesstr/nostr missing for Chinese language locale
1412 [21724] localedata: yesstr and nostr are missing for Xhosa [LC_MESSAGES]
1414 [21727] localedata: yesstr and nostr are missing for Tsonga [LC_MESSAGES]
1416 [21728] localedata: New Locale for Tongan language
1417 [21729] localedata: incorrect LC_NAME fields for hi_IN
1418 [21733] localedata: yesstr and nostr are missing for zh_HK
1419 [21734] localedata: Missing yesstr and nostr are for kw_GB
1420 [21738] libc: misc/tst-preadvwritev2 and misc/tst-preadvwritev64v2 fail
1421 [21741] libc: Undefined __memmove_chk_XXX and __memset_chk_XXX in libc.a
1422 [21742] libc: _dl_num_cache_relocations is undefined in libc.a
1423 [21743] localedata: ks_IN@devanagari: abday strings mismatch the day
1425 [21744] libc: Tests failing on --enable-tunables --enable-stack-
1427 [21749] localedata: Wrong abbreviated day name (“abday”) for
1429 [21756] localedata: missing yesstr, nostr for nds_DE and nds_NL
1430 [21757] localedata: missing yesstr, nostr for pap_AW and pap_CW
1431 [21759] localedata: missing yesstr and nostr for Tigrinya
1432 [21760] localedata: Fix LC_MESSAGES and LC_ADDRESS for anp_IN
1433 [21766] localedata: Wrong LC_MESSAGES for om_ET Locale
1434 [21767] localedata: Missing Bislama locales
1435 [21768] localedata: Missing yesstr and nostr for aa_ET
1436 [21770] localedata: Missing Field in li_NL
1437 [21778] nptl: Robust mutex may deadlock
1438 [21779] libc: MicroBlaze segfaults when loading libpthread
1439 [21783] localedata: Fix int_select international_call_prefixes
1440 [21784] localedata: Inconsistency in country_isbn
1441 [21788] localedata: Missing Country Postal Abbreviations
1442 [21794] localedata: Added-country_isbn-for-Italy
1443 [21795] localedata: Add/Fix country_isbn for France
1444 [21796] localedata: Added country_isbn for Republic of Korea
1445 [21797] localedata: Fix inconsistency in country_isbn and missing prefixes
1446 [21799] localedata: Added int_select international_call_prefixes
1447 [21801] localedata: Added int_select international_call_prefixes
1448 [21804] nptl: Double semicolon in thread-shared-types.h
1449 [21807] localedata: LC_ADDRESS fix for pap_CW
1450 [21808] localedata: Fix LC_ADDRESS for pap_AW
1451 [21821] localedata: Added country_name in mai_IN
1452 [21822] localedata: Fix LC_TIME for mai_IN
1453 [21823] localedata: missing yesstr, nostr for sa_IN
1454 [21825] localedata: Fix name_mrs for mag_IN
1455 [21828] localedata: 2.26 changelog should mention user visible changes
1457 [21835] localedata: Added Maithili language locale for Nepal
1458 [21838] localedata: Removed redundant data for the_NP
1459 [21839] localedata: Fix LC_MONETARY for ta_LK
1460 [21844] localedata: Fix Latin characters and Months Sequence.
1461 [21848] localedata: Fix mai_NP Title Name
1466 * The feature test macro __STDC_WANT_LIB_EXT2__, from ISO/IEC TR
1467 24731-2:2010, is supported to enable declarations of functions from that
1468 TR. Note that not all functions from that TR are supported by the GNU C
1471 * The feature test macro __STDC_WANT_IEC_60559_BFP_EXT__, from ISO/IEC TS
1472 18661-1:2014, is supported to enable declarations of functions and macros
1473 from that TS. Note that not all features from that TS are supported by
1476 * The feature test macro __STDC_WANT_IEC_60559_FUNCS_EXT__, from ISO/IEC TS
1477 18661-4:2015, is supported to enable declarations of functions and macros
1478 from that TS. Note that most features from that TS are not supported by
1481 * The nonstandard feature selection macros _REENTRANT and _THREAD_SAFE are
1482 now treated as compatibility synonyms for _POSIX_C_SOURCE=199506L.
1483 Since the GNU C Library defaults to a much newer revision of POSIX, this
1484 will only affect programs that specifically request an old conformance
1485 mode. For instance, a program compiled with -std=c89 -D_REENTRANT will
1486 see a change in the visible declarations, but a program compiled with
1487 just -D_REENTRANT, or -std=c99 -D_POSIX_C_SOURCE=200809L -D_REENTRANT,
1490 Some C libraries once required _REENTRANT and/or _THREAD_SAFE to be
1491 defined by all multithreaded code, but glibc has not required this for
1494 * The inclusion of <sys/sysmacros.h> by <sys/types.h> is deprecated. This
1495 means that in a future release, the macros “major”, “minor”, and “makedev”
1496 will only be available from <sys/sysmacros.h>.
1498 These macros are not part of POSIX nor XSI, and their names frequently
1499 collide with user code; see for instance glibc bug 19239 and Red Hat bug
1500 130601. <stdlib.h> includes <sys/types.h> under _GNU_SOURCE, and C++ code
1501 presently cannot avoid being compiled under _GNU_SOURCE, exacerbating the
1504 * New <fenv.h> features from TS 18661-1:2014 are added to libm: the
1505 fesetexcept, fetestexceptflag, fegetmode and fesetmode functions, the
1506 femode_t type and the FE_DFL_MODE and FE_SNANS_ALWAYS_SIGNAL macros.
1508 * Integer width macros from TS 18661-1:2014 are added to <limits.h>:
1509 CHAR_WIDTH, SCHAR_WIDTH, UCHAR_WIDTH, SHRT_WIDTH, USHRT_WIDTH, INT_WIDTH,
1510 UINT_WIDTH, LONG_WIDTH, ULONG_WIDTH, LLONG_WIDTH, ULLONG_WIDTH; and to
1511 <stdint.h>: INT8_WIDTH, UINT8_WIDTH, INT16_WIDTH, UINT16_WIDTH,
1512 INT32_WIDTH, UINT32_WIDTH, INT64_WIDTH, UINT64_WIDTH, INT_LEAST8_WIDTH,
1513 UINT_LEAST8_WIDTH, INT_LEAST16_WIDTH, UINT_LEAST16_WIDTH,
1514 INT_LEAST32_WIDTH, UINT_LEAST32_WIDTH, INT_LEAST64_WIDTH,
1515 UINT_LEAST64_WIDTH, INT_FAST8_WIDTH, UINT_FAST8_WIDTH, INT_FAST16_WIDTH,
1516 UINT_FAST16_WIDTH, INT_FAST32_WIDTH, UINT_FAST32_WIDTH, INT_FAST64_WIDTH,
1517 UINT_FAST64_WIDTH, INTPTR_WIDTH, UINTPTR_WIDTH, INTMAX_WIDTH,
1518 UINTMAX_WIDTH, PTRDIFF_WIDTH, SIG_ATOMIC_WIDTH, SIZE_WIDTH, WCHAR_WIDTH,
1521 * New <math.h> features are added from TS 18661-1:2014:
1523 - Signaling NaN macros: SNANF, SNAN, SNANL.
1525 - Nearest integer functions: roundeven, roundevenf, roundevenl, fromfp,
1526 fromfpf, fromfpl, ufromfp, ufromfpf, ufromfpl, fromfpx, fromfpxf,
1527 fromfpxl, ufromfpx, ufromfpxf, ufromfpxl.
1529 - llogb functions: the llogb, llogbf and llogbl functions, and the
1530 FP_LLOGB0 and FP_LLOGBNAN macros.
1532 - Max-min magnitude functions: fmaxmag, fmaxmagf, fmaxmagl, fminmag,
1535 - Comparison macros: iseqsig.
1537 - Classification macros: iscanonical, issubnormal, iszero.
1539 - Total order functions: totalorder, totalorderf, totalorderl,
1540 totalordermag, totalordermagf, totalordermagl.
1542 - Canonicalize functions: canonicalize, canonicalizef, canonicalizel.
1544 - NaN functions: getpayload, getpayloadf, getpayloadl, setpayload,
1545 setpayloadf, setpayloadl, setpayloadsig, setpayloadsigf, setpayloadsigl.
1547 * The functions strfromd, strfromf, and strfroml, from ISO/IEC TS 18661-1:2014,
1548 are added to libc. They convert a floating-point number into string.
1550 * Most of glibc can now be built with the stack smashing protector enabled.
1551 It is recommended to build glibc with --enable-stack-protector=strong.
1552 Implemented by Nick Alcock (Oracle).
1554 * The function explicit_bzero, from OpenBSD, has been added to libc. It is
1555 intended to be used instead of memset() to erase sensitive data after use;
1556 the compiler will not optimize out calls to explicit_bzero even if they
1557 are "unnecessary" (in the sense that no _correct_ program can observe the
1558 effects of the memory clear).
1560 * On ColdFire, MicroBlaze, Nios II and SH3, the float_t type is now defined
1561 to float instead of double. This does not affect the ABI of any libraries
1562 that are part of the GNU C Library, but may affect the ABI of other
1563 libraries that use this type in their interfaces.
1565 * On x86_64, when compiling with -mfpmath=387 or -mfpmath=sse+387, the
1566 float_t and double_t types are now defined to long double instead of float
1567 and double. These options are not the default, and this does not affect
1568 the ABI of any libraries that are part of the GNU C Library, but it may
1569 affect the ABI of other libraries that use this type in their interfaces,
1570 if they are compiled or used with those options.
1572 * The getentropy and getrandom functions, and the <sys/random.h> header file
1575 * The buffer size for byte-oriented stdio streams is now limited to 8192
1576 bytes by default. Previously, on Linux, the default buffer size on most
1577 file systems was 4096 bytes (and thus remains unchanged), except on
1578 network file systems, where the buffer size was unpredictable and could be
1579 as large as several megabytes.
1581 * The <sys/quota.h> header now includes the <linux/quota.h> header. Support
1582 for the Linux quota interface which predates kernel version 2.4.22 has
1585 * The malloc_get_state and malloc_set_state functions have been removed.
1586 Already-existing binaries that dynamically link to these functions will
1587 get a hidden implementation in which malloc_get_state is a stub. As far
1588 as we know, these functions are used only by GNU Emacs and this change
1589 will not adversely affect already-built Emacs executables. Any undumped
1590 Emacs executables, which normally exist only during an Emacs build, should
1591 be rebuilt by re-running “./configure; make” in the Emacs build tree.
1593 * The “ip6-dotint” and “no-ip6-dotint” resolver options, and the
1594 corresponding RES_NOIP6DOTINT flag from <resolv.h> have been removed.
1595 “no-ip6-dotint” had already been the default, and support for the
1596 “ip6-dotint” option was removed from the Internet in 2006.
1598 * The "ip6-bytestring" resolver option and the corresponding RES_USEBSTRING
1599 flag from <resolv.h> have been removed. The option relied on a
1600 backwards-incompatible DNS extension which was never deployed on the
1603 * The flags RES_AAONLY, RES_PRIMARY, RES_NOCHECKNAME, RES_KEEPTSIG,
1604 RES_BLAST defined in the <resolv.h> header file have been deprecated.
1605 They were already unimplemented.
1607 * The "inet6" option in /etc/resolv.conf and the RES_USE_INET6 flag for
1608 _res.flags are deprecated. The flag was standardized in RFC 2133, but
1609 removed again from the IETF name lookup interface specification in RFC
1610 2553. Applications should use getaddrinfo instead.
1612 * DNSSEC-related declarations and definitions have been removed from the
1613 <arpa/nameser.h> header file, and libresolv will no longer attempt to
1614 decode the data part of DNSSEC record types. Previous versions of glibc
1615 only implemented minimal support for the previous version of DNSSEC, which
1616 is incompatible with the currently deployed version.
1618 * The resource record type classification macros ns_t_qt_p, ns_t_mrr_p,
1619 ns_t_rr_p, ns_t_udp_p, ns_t_xfr_p have been removed from the
1620 <arpa/nameser.h> header file because the distinction between RR types and
1621 meta-RR types is not officially standardized, subject to revision, and
1622 thus not suitable for encoding in a macro.
1624 * The types res_sendhookact, res_send_qhook, re_send_rhook, and the qhook
1625 and rhook members of the res_state type in <resolv.h> have been removed.
1626 The glibc stub resolver did not support these hooks, but the header file
1627 did not reflect that.
1629 * For multi-arch support it is recommended to use a GCC which has
1630 been built with support for GNU indirect functions. This ensures
1631 that correct debugging information is generated for functions
1632 selected by IFUNC resolvers. This support can either be enabled by
1633 configuring GCC with '--enable-gnu-indirect-function', or by
1634 enabling it by default by setting 'default_gnu_indirect_function'
1635 variable for a particular architecture in the GCC source file
1638 * GDB pretty printers have been added for mutex and condition variable
1639 structures in POSIX Threads. When installed and loaded in gdb these pretty
1640 printers show various pthread variables in human-readable form when read
1641 using the 'print' or 'display' commands in gdb.
1643 * Tunables feature added to allow tweaking of the runtime for an application
1644 program. This feature can be enabled with the '--enable-tunables' configure
1645 flag. The GNU C Library manual has details on usage and README.tunables has
1646 instructions on adding new tunables to the library.
1648 * A new version of condition variables functions have been implemented in
1649 the NPTL implementation of POSIX Threads to provide stronger ordering
1652 * A new version of pthread_rwlock functions have been implemented to use a more
1653 scalable algorithm primarily through not using a critical section anymore to
1656 Security related changes:
1658 * On ARM EABI (32-bit), generating a backtrace for execution contexts which
1659 have been created with makecontext could fail to terminate due to a
1660 missing .cantunwind annotation. This has been observed to lead to a hang
1661 (denial of service) in some Go applications compiled with gccgo. Reported
1662 by Andreas Schwab. (CVE-2016-6323)
1664 * The DNS stub resolver functions would crash due to a NULL pointer
1665 dereference when processing a query with a valid DNS question type which
1666 was used internally in the implementation. The stub resolver now uses a
1667 question type which is outside the range of valid question type values.
1670 The following bugs are resolved with this release:
1672 [4099] stdio: Overly agressive caching by stream i/o functions.
1673 [7065] build: Support building glibc with -fstack-protector or -fstack-
1675 [9842] localedata: en_CA: incorrect date format
1676 [13165] nptl: pthread_cond_wait() can consume a signal that was sent
1677 before it started waiting
1678 [14139] manual: Do not hardcode platform names in manual/libm-err-tab.pl
1679 [15765] nptl: sem_open is wrongly a cancellation point
1680 [16421] network: IN6_IS_ADDR_UNSPECIFIED can use undefined s6_addr32
1681 [16458] libc: endian.h and netinet/in.h byte order macros return values of
1683 [16628] dynamic-link: Segfault after a binary without pthread dlopen()s a
1684 library linked with pthread
1685 [16630] nptl: Use SYSENTER for pthread_cond_broadcast/signal() (i.e. fix
1686 "FIXME: Ingo" issue)
1687 [16907] libc: <argp.h> compiled with --std=cXX disables __attribute__
1688 [17252] libc: getrandom and getentropy syscall
1689 [17730] malloc: thread-local storage is sometimes improperly free()'d
1690 after being __libc_memalign()'d
1691 [18241] stdio: failed fseek on memstream does not set errno and can fail
1693 [18243] nptl: sem_wait, sem_timedwait are cancellation points shm_open is
1695 [18463] nptl: pthread_cond_broadcast issue when surrounded by
1696 PTHREAD_PRIO_INHERIT mutex on ARM
1697 [18784] network: res_query and related function crash for special record
1698 type queries (CVE-2015-5180)
1699 [19380] math: strtod does not raise "inexact"
1700 [19387] string: Integer overflow in memchr
1701 [19390] string: Integer overflow in strncat
1702 [19398] build: linknamespace tests fail with massively parallel build
1703 [19402] nptl: Deadlock with robust shared mutex and asynchronous
1705 [19469] malloc: M_PERTURB in test-skeleton.c invalidates malloc tests
1706 [19473] malloc: Turn malloc_get_state etc. in compatibility symbols
1707 [19514] libc: [PATCH] Fix spelling errors in spelling
1708 "implement"/"implementation" in several places
1709 [19582] network: Deprecate RES_USE_INET6
1710 [19673] manual: clog10 docs appear to be erroneous
1711 [19810] dynamic-link: dlopen with both RTLD_NOLOAD and RTLD_NODELETE
1712 causes a segmentation fault
1713 [19826] libc: invalid pointer returned from __tls_get_addr with static
1715 [20016] network: resolv: Remove hooks support from the API
1716 [20019] dynamic-link: NULL pointer dereference in libc.so.6 IFUNC due to
1718 [20033] math: [x86_64] vectorized math function don't call the __finite
1720 [20116] nptl: use after free in pthread_create
1721 [20181] stdio: open_memstream(): writes not at end of stream corrupt data
1722 [20292] dynamic-link: Comparison in elf/dl-open.c _dl_addr_inside_object
1724 [20311] nptl: please install proc_service.h
1725 [20366] libc: Compilation errors in installed headers in strict-compliance
1727 [20370] malloc: malloc: Arena free list management is still racy
1728 (incorrect fix in bug 19243)
1729 [20386] libc: assert (X = 0) does not result in GCC warning
1730 [20432] malloc: malloc: Minimize interface required for interposition
1731 [20435] libc: Missing unwind info in __startcontext causes infinite loop
1732 in _Unwind_Backtrace (CVE-2016-6323)
1733 [20444] hurd: recvmsg: PF_LOCAL sockets and msg_name lead to SIGLOST
1734 [20452] nptl: Addition of sysdep.o to libpthread.a breaks relinking
1736 [20455] math: [powerpc] fesetexceptflag fails to clear FE_INVALID
1737 [20459] localedata: et_EE: locale has wrong {p,n}_cs_precedes value
1738 [20477] network: resolv: incorrect double-checked locking related to
1740 [20478] libc: libc_ifunc macro and similar usages leads to false debug-
1742 [20495] math: x86_64 performance degradation due to AVX/SSE transition
1744 [20497] localedata: lt_LT: LC_TIME d_fmt used is obsolete
1745 [20508] dynamic-link: _dl_runtime_resolve_avx/_dl_runtime_profile_avx512
1746 cause transition penalty
1747 [20517] math: sparcv9 missing fdiml compat symbol
1748 [20524] manual: strverscmp is inconsistent
1749 [20525] libc: <sys/quota.h> should be based on kernel headers
1750 [20539] math: GCC 7 -static -lm fails to link at -O3
1751 [20554] libc: ld: bss-plt forced due to /usr/lib/libc_nonshared.a(ppc-
1753 [20558] string: POSIX bcopy/bzero decls do not implement Object Size
1755 [20591] network: Remove obsolete DNSSEC support
1756 [20592] network: DNS resource record type classification macros in
1757 <arpa/nameser.h> are incorrect
1758 [20593] network: Update DNS RR type definitions
1759 [20611] network: getaddrinfo accepts invalid numeric scope IDs
1760 [20615] build: glibc build fails when using --with-cpu=power9 --enable-
1762 [20629] network: libresolv: Remove support for bitstring labels
1764 [20647] libc: GLIBC quitting every program - glibc on Pentium-S leads to
1765 assertion: "maxidx >= 2"
1766 [20660] math: [arm] Use VSQRT
1767 [20662] libc: checking whether x86_64-pc-linux-gnu-gcc implicitly enables
1768 -fstack-protector no (32bit gcc 6.2.0 pie and ssp enable)
1769 [20689] libc: Test for FMA should also check for AVX.
1770 [20707] glob: gl_pathv entries not set to NULL with GLOB_DOOFFS
1771 [20715] math: iszero macro breaks existing code
1772 [20718] math: [powerpc] copysignl raises "invalid" for sNaN
1773 [20728] libc: powerpc: Missing TOC stub in clone
1774 [20729] build: glibc-2.24 fails to build for i486 with -Os
1775 [20750] build: Build fails with default PIE enabled gcc-6.x
1776 [20768] math: [alpha] sqrt fegetenv namespace
1777 [20785] libc: binutils 2.28 fails to assemble power6/memset.S file in
1779 [20787] math: float_t is defined as float incorrectly on x86_64 even if
1780 __FLT_EVAL_METHOD__ is 2
1781 [20790] network: rpcgen buffer overrun in get_prog_declaration
1782 [20822] nptl: race condition in __lll_unlock_elision on powerpc
1783 [20829] libc: crypt snprintf namespace
1784 [20847] libc: tst-vfork3 failure
1785 [20855] math: Default bits/mathdef.h has inappropriate float_t
1786 [20859] math: [sh4] FP_ILOGB0 invalid
1787 [20864] localedata: iconv: cp936 missing single-byte euro sign (0x80,
1788 U+20AC), not same as GBK
1789 [20915] dynamic-link: global-dynamic TLS broken on aarch64
1790 [20916] math: pow handling of sNaN arguments
1791 [20918] build: Building with --enable-nss-crypt fails tst-linkall-static.
1792 [20919] math: Bad pow (qNaN, 0) result with -lieee
1793 [20940] math: hypot sNaN handling
1794 [20947] math: fmax, fmin sNaN handling
1795 [20956] libc: debug/tst-backtrace3-6 don't work with -O3 anymore
1796 [20964] network: sunrpc: Stack-based buffer overflow in getrpcport with
1798 [20971] string: powerpc64/power7 memchr overflows internal pointer check
1799 [20973] nptl: robust mutexes: Lost wake-ups
1800 [20974] locale: bs_BA: yesexpr/noexpr regexes accept any character
1801 [20978] nis: strlen on null pointer in nss_nisplus
1802 [20985] nptl: robust mutexes: lowlevelrobustlock assembly on x86 blocks on
1804 [21014] string: i686 memchr overflows internal pointer check
1805 [21019] libc: [mips] n32 lseek incorrect on overflow
1806 [21022] libc: [microblaze] __backtrace get_frame_size namespace
1807 [21026] libc: [MIPS] readahead syscall is broken on n64
1808 [21028] math: Fallback fesetexceptflag should always succeed
1809 [21045] libc: [powerpc-nofpu] swapcontext does not restore signal mask
1810 [21047] math: arm: fpu_control.h: _FPU_GETCW/_FPU_SETCW is rejected by
1812 [21053] libc: [SH] Namespace pollution from sys/ucontext.h
1813 [21061] librt: [microblaze] librt lost clock_* exports
1814 [21073] libc: tunables: insecure environment variables passed to
1815 subprocesses with AT_SECURE
1816 [21081] string: Missing vzeroupper in memset-vec-unaligned-erms.S
1820 * The minimum Linux kernel version that this version of the GNU C Library
1821 can be used with is 3.2, except on i[4567]86 and x86_64, where Linux
1822 kernel version 2.6.32 or later suffices (on architectures that already
1823 required kernel versions more recent than 3.2, those requirements remain
1824 unchanged). Linux 3.2 or later kernel headers are required on all
1827 * The pap_AN locale has been deleted. This has been deprecated for a long
1828 time. It has been replaced by pap_AW & pap_CW, both of which have long
1829 been included in previous releases.
1831 * The readdir_r and readdir64_r functions have been deprecated. It is
1832 recommended to use readdir and readdir64 instead.
1834 * The type “union wait” has been removed. It was deprecated in the early
1835 1990s and never part of POSIX. Application code should use the int type
1836 instead of “union wait”.
1838 * A new NSS action is added to facilitate large distributed system
1839 administration. The action, MERGE, allows remote user stores like LDAP
1840 to be merged into local user stores like /etc/groups in order to provide
1841 easy to use, updated, and managed sets of merged credentials. The new
1842 action can be used by configuring it in /etc/nsswitch.conf:
1843 group: files [SUCCESS=merge] nis
1844 Implemented by Stephen Gallagher (Red Hat).
1846 * The deprecated __malloc_initialize_hook variable has been removed from the
1849 * The long unused localedef --old-style option has been removed. It hasn't
1850 done anything in over 16 years. Scripts using this option can safely
1853 * nextupl, nextup, nextupf, nextdownl, nextdown and nextdownf are added to
1854 libm. They are defined by TS 18661 and IEEE754-2008. The nextup functions
1855 return the next representable value in the direction of positive infinity
1856 and the nextdown functions return the next representable value in the
1857 direction of negative infinity. These are currently enabled as GNU
1860 Security related changes:
1862 * An unnecessary stack copy in _nss_dns_getnetbyname_r was removed. It
1863 could result in a stack overflow when getnetbyname was called with an
1864 overly long name. (CVE-2016-3075)
1866 * Previously, getaddrinfo copied large amounts of address data to the stack,
1867 even after the fix for CVE-2013-4458 has been applied, potentially
1868 resulting in a stack overflow. getaddrinfo now uses a heap allocation
1869 instead. Reported by Michael Petlan. (CVE-2016-3706)
1871 * The glob function suffered from a stack-based buffer overflow when it was
1872 called with the GLOB_ALTDIRFUNC flag and encountered a long file name.
1873 Reported by Alexander Cherepanov. (CVE-2016-1234)
1875 * The Sun RPC UDP client could exhaust all available stack space when
1876 flooded with crafted ICMP and UDP messages. Reported by Aldy Hernandez'
1877 alloca plugin for GCC. (CVE-2016-4429)
1879 * The IPv6 name server management code in libresolv could result in a memory
1880 leak for each thread which is created, performs a failing naming lookup,
1881 and exits. Over time, this could result in a denial of service due to
1882 memory exhaustion. Reported by Matthias Schiffer. (CVE-2016-5417)
1884 The following bugs are resolved with this release:
1886 [1170] localedata: ne_NP: update Nepali locale definition file
1887 [3629] manual: stpcpy description in string.texi refers to MS-DOG instead
1889 [6527] malloc: [powerpc] Malloc alignment insufficient for PowerPC
1890 [6796] math: fdim() does not set errno on overflow
1891 [10354] libc: posix_spawn should use vfork() in more cases than presently
1892 [11213] localedata: localedata: add copyright disclaimer to locale files
1893 [12143] localedata: chr_US: new Cherokee locale
1894 [12450] localedata: sgs_LT: new locale
1895 [12676] localedata: ln_CD: new locale
1896 [13237] localedata: LC_ADDRESS.country_name: update all locales w/latest
1898 [13304] math: fma, fmaf, fmal produce wrong results
1899 [14259] build: --localedir arg to configure is ignored
1900 [14499] nptl: Does posix_spawn invoke atfork handlers / use vfork?
1901 [14750] libc: Race condition in posix_spawn vfork usage vs signal handlers
1902 [14934] localedata: es_CL: wrong first weekday chilean locale
1903 [15262] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of
1905 [15263] localedata: LC_MESSAGES.yesexpr/noexpr: inconsistent use of 1/0
1907 [15264] localedata: LC_MESSAGES.yesstr/nostr: lacking in many locales
1908 [15368] nptl: raise() is not async-signal-safe
1909 [15479] math: ceil, floor, round and trunc raise inexact exception
1910 [15578] localedata: kk_KZ: various updates
1911 [16003] localedata: pap_AN: punt old locale
1912 [16137] localedata: iw_IL: punt old locale
1913 [16190] localedata: eo: new esperanto locale
1914 [16374] localedata: lv_LV: change currency symbol in LC_MONETARY to euro
1915 [16742] malloc: race condition: pthread_atfork() called before first
1916 malloc() results in unexpected locking behaviour/deadlocks
1917 [16975] localedata: LC_MESSAGES.yesexpr/noexpr: revisit capitalization in
1919 [16983] localedata: postal_fmt does not allow %l and %n modifiers
1920 [17565] localedata: pt_PT: wrong (work-)week start
1921 [17899] math: [powerpc] floorl returns negative zero with FE_DOWNWARD
1922 [17950] build: Build fails with -msse
1923 [18205] localedata: be_BY*: wrong first_weekday and first_workday
1924 [18433] libc: posix_spawn does not return correctly upon failure to
1926 [18453] localedata: charmaps/IBM875: incorrect codes
1927 [18712] string: bits/string2.h incompatible with -O2 -Werror=packed
1929 [18896] localedata: he_IL: improvements for currency
1930 [18911] localedata: ro_RO: Correcting week day name for "Tuesday" in
1931 Romanian locale data
1932 [18960] locale: s390: _nl_locale_subfreeres uses larl opcode on misaligned
1934 [19056] libc: Deprecate readdir_r
1935 [19133] localedata: pt_*: days & months should be lowercase in Portuguese
1937 [19198] localedata: nl_NL: small improvements for Dutch locales
1938 [19257] network: Per-thread memory leak in __res_vinit with IPv6
1939 nameservers (CVE-2016-5417)
1940 [19269] build: tst-audit4 and tst-audit10 failures with gcc-6 on non avx
1942 [19400] locale: Language missing in "iso-639.def", trivial fix in
1944 [19431] malloc: Deadlock between fflush, getdelim, and fork
1945 [19505] libc: Incorrect file descriptor validity checks in
1946 posix_spawn_file_actions_add{open,close,dup2}
1947 [19509] dynamic-link: dlsym, dlvsym do not report errors through dlerror
1948 when using RTLD_NEXT
1949 [19512] locale: Stale `#ifndef HAVE_BUILTIN_EXPECT' in
1950 `intl/{gettextP,loadinfo}.h'
1951 [19534] libc: execle, execlp may use malloc
1952 [19568] localedata: *_CH: Swiss locales have inconsistent start of week
1953 [19573] network: res_nclose and __res_maybe_init disagree about name
1954 server initialization, breaking Hesiod
1955 [19575] localedata: Status of GB18030 tables
1956 [19581] localedata: sr_* date_fmt string contains additional newline
1957 [19583] string: SSSE3_Fast_Copy_Backward flag needs to be enabled for AMD
1959 [19592] math: [ldbl-128ibm] ceill incorrect in non-default rounding modes
1960 [19593] math: [ldbl-128ibm] truncl incorrect in non-default rounding modes
1961 [19594] math: [ldbl-128ibm] roundl incorrect in non-default rounding modes
1962 [19595] math: [ldbl-128ibm] fmodl incorrect for results in subnormal
1964 [19602] math: [ldbl-128ibm] fmodl handling of equal arguments with low
1966 [19603] math: [ldbl-128ibm] remainderl, remquol incorrect sign handling in
1968 [19610] dynamic-link: ldconfig -X removes stale symbolic links
1969 [19613] libc: s390x (64 bit) macro expansion WCOREDUMP and others
1970 [19633] locale: strfmon_l applies global locale to number formatting
1971 [19642] network: Memory leak in getnameinfo
1972 [19648] libc: test-skeleton.c: Do not set RLIMIT_DATA
1973 [19653] libc: Potential for NULL pointer dereference (CWE-476) in
1975 [19654] math: [x86_64] Need testcase for BZ #19590 fix
1976 [19671] localedata: Missing Sanity Check for malloc() in 'tst-fmon.c' &
1978 [19674] math: [ldbl-128ibm] powl incorrect overflow handling
1979 [19677] math: [ldbl-128ibm] remainderl equality test incorrect for zero
1981 [19678] math: [ldbl-128ibm] nextafterl, nexttowardl incorrect sign of zero
1983 [19679] dynamic-link: gcc-4.9.3 C++ exception handling broken due to
1985 [19726] locale: Converting UCS4LE to INTERNAL with iconv() does not update
1986 pointers and lengths in error-case.
1987 [19727] locale: Converting from/to UTF-xx with iconv() does not always
1988 report errors on UTF-16 surrogates values.
1989 [19755] nscd: nscd assertion failure in gc
1990 [19758] dynamic-link: Typo in EXTRA_LD_ENVVARS for x86-64
1991 [19759] libc: mempcpy shouldn't be inlined
1992 [19762] dynamic-link: HAS_CPU_FEATURE/HAS_ARCH_FEATURE are easy to misuse
1993 [19765] libc: s390 needs an optimized mempcpy
1994 [19779] glob: glob: buffer overflow with GLOB_ALTDIRFUNC due to incorrect
1995 NAME_MAX limit assumption (CVE-2016-1234)
1996 [19783] build: benchtests don't support --enable-hardcoded-path-in-tests
1997 [19787] network: Missing and incorrect truncation checks in getnameinfo
1998 [19790] math: [ldbl-128ibm] nearbyintl incorrect in non-default rounding
2000 [19791] network: Assertion failure in res_query.c with un-connectable name
2002 [19792] libc: MIPS: backtrace yields infinite backtrace with makecontext
2003 [19822] math: libm.so install clobbers old version
2004 [19825] network: resolv: send_vc can return uninitialized data in second
2005 response to getaddrinfo
2006 [19830] network: nss_dns: should check RDATA length against buffer length
2007 [19831] network: nss_dns: getaddrinfo returns uninitialized data when
2008 confronted with A/AAAA records of invalid size
2009 [19837] nss: nss_db: No retries for some long lines with a larger buffer
2010 [19848] math: powl(10,n) for n=-4,-5,-6,-7 is off by more than 1 ULP
2011 [19853] stdio: Printing IBM long double in decimal with high precision is
2013 [19860] build: x86_64: compile errors for tst-audit10 and tst-auditmod10b
2014 [19861] nptl: libpthread IFUNC resolver for fork can lead to crash
2015 [19862] network: resolv, nss_dns: Remove remaining logging of unexpected
2017 [19865] network: Assertion failure or memory leak in
2018 _nss_dns_getcanonname_r
2019 [19868] network: nss_dns: netent code does not skip over non-PTR records
2020 [19879] network: nss_dns: Stack overflow in getnetbyname implementation
2022 [19881] string: Improve x86-64 memset
2023 [19907] string: Incorrect memcpy tests
2024 [19916] dynamic-link: S390: fprs/vrs are not saved/restored while
2026 [19925] libc: termios.h XCASE namespace
2027 [19928] string: memmove-vec-unaligned-erms.S is slow with large data size
2028 [19929] libc: limits.h NL_NMAX namespace
2029 [19931] stdio: Memory leak in vfprintf
2030 [19957] libc: clone(CLONE_VM) access invalid parent memory
2031 [19963] localedata: en_IL: New locale
2032 [19989] stdio: stdio.h cuserid namespace
2033 [19994] network: getaddrinfo does not restore RES_USE_INET6 flag in
2035 [19996] locale: langinfo.h nl_langinfo_l namespace
2036 [20005] stdio: fflush on a file opened with fmemopen resets position to 0
2037 [20010] network: getaddrinfo: Stack overflow in hostent translation
2039 [20012] stdio: libio: fmemopen append mode failure
2040 [20014] stdio: stdio.h namespace for pre-threads POSIX
2041 [20017] network: resolv: Use gmtime_r instead of gmtime in p_secstodate
2042 [20023] libc: fcntl.h timespec namespace
2043 [20024] math: [x86_64] vectorized sincos trashes the stack
2044 [20031] network: nss_hesiod: Heap overflow in get_txt_records
2045 [20041] time: sys/time.h timespec namespace
2046 [20043] libc: unistd.h missing cuserid for UNIX98 and before
2047 [20044] libc: unistd.h missing pthread_atfork for UNIX98
2048 [20051] libc: ttyslot in wrong header under wrong conditions
2049 [20054] libc: gethostname not declared for XPG4
2050 [20055] libc: termios.h missing tcgetsid for XPG4
2051 [20072] dynamic-link: x86 init_cpu_features is called twice in static
2053 [20073] libc: sys/stat.h fchmod namespace
2054 [20074] libc: stdlib.h rand_r namespace
2055 [20076] libc: sys/stat.h missing S_IFSOCK, S_ISSOCK for XPG4
2056 [20094] libc: stdlib.h should not declare grantpt, ptsname, unlockpt for
2058 [20111] libc: struct sockaddr_storage cannot be aggregate-copied
2059 [20112] network: sunrpc: stack (frame) overflow in Sun RPC clntudp_call
2061 [20115] string: Extra alignment in memset-vec-unaligned-erms.S
2062 [20119] libc: Wrong mask for processors level type from CPUID
2063 [20139] dynamic-link: Upper part of zmm is zeroed if Glibc is built with
2064 AS not supporting AVX512
2065 [20151] math: [ldbl-128/ldbl-128ibm] j0l, j1l, y0l, y1l return sNaN for
2067 [20153] math: [ldbl-128ibm] sqrtl (sNaN) returns sNaN
2068 [20156] math: [ldbl-128ibm] ceill, rintl etc. return sNaN for sNaN
2070 [20157] math: [powerpc] fabsl (sNaN) wrongly raises "invalid"
2071 [20160] math: [powerpc] ceil, rint etc. return sNaN for sNaN input
2072 [20178] libc: posix_spawn{p} should not call exit
2073 [20191] stdio: libio: vtables hardening
2074 [20195] string: FMA4 detection requires CPUID execution with register
2076 [20198] libc: quick_exit incorrectly destroys C++11 thread objects.
2077 [20205] math: [i386/x86_64] nextafterl incorrect incrementing negative
2079 [20212] math: acos (sNaN) returns sNaN
2080 [20213] math: asin (sNaN) returns sNaN
2081 [20214] network: Linux header sync with linux/in6.h and ipv6.h again.
2082 [20218] math: [i386] asinhl (sNaN) returns sNaN
2083 [20219] math: [i386] atanhl (sNaN) returns sNaN
2084 [20222] stdio: fopencookie: Mangle function pointers
2085 [20224] math: [i386] cbrtl (sNaN) returns sNaN
2086 [20225] math: ldexp, scalbn, scalbln return sNaN for sNaN input
2087 [20226] math: [i386/x86_64] expl, exp10l, expm1l return sNaN for sNaN
2089 [20227] math: [i386/x86_64] logl (sNaN) returns sNaN
2090 [20228] math: [i386/x86_64] log10l (sNaN) returns sNaN
2091 [20229] math: [i386/x86_64] log1pl (sNaN) returns sNaN
2092 [20232] math: [ldbl-128] expm1l (sNaN) returns sNaN
2093 [20233] math: [ldbl-128ibm] expm1l (sNaN) returns sNaN
2094 [20234] math: [ldbl-128ibm] log1pl (sNaN) returns sNaN
2095 [20235] math: [i386/x86_64] log2l (sNaN) returns sNaN
2096 [20237] nss: nss_db: get*ent segfaults without preceding set*ent
2097 [20240] math: modf (sNaN) returns sNaN
2098 [20248] libc: debug/tst-longjump_chk2 calls printf from a signal handler
2099 [20250] math: frexp (sNaN) returns sNaN
2100 [20252] math: atan2 (sNaN, qNaN) fails to raise "invalid"
2101 [20255] math: [i386] fdim, fdimf return with excess range and precision /
2103 [20256] math: [i386/x86_64] fdiml returns sNaN for sNaN input
2104 [20260] string: ../sysdeps/x86/bits/string.h:1092:3: error: array
2105 subscript is below array bounds [-Werror=array-bounds]
2106 [20262] nis: _nss_nis_initgroups_dyn always returns NSS_STATUS_NOTFOUND
2107 [20263] nptl: robust mutex deadlocks if other thread requests timedlock
2109 [20277] libc: $dp is not initialized correctly in sysdeps/hppa/start.S
2110 [20284] malloc: malloc: Corrupt arena avoidance causes unnecessary mmap
2112 [20296] math: [i386/x86_64] scalbl returns sNaN for sNaN input, missing
2113 "invalid" exceptions
2114 [20314] nptl: make[4]: *** [/usr/include/stdlib.h] Error 1
2115 [20316] localedata: id_ID: Februari instead of Pebruari
2116 [20327] string: POWER8 strcasecmp returns incorrect result
2117 [20347] math: Failure: Test: j0_downward (0xap+0)
2118 [20348] libc: FAIL: misc/tst-preadvwritev64
2119 [20349] libc: 64-bit value is passed differently in p{readv,writev}{64}
2120 [20350] libc: There is no test for p{read,write}64
2121 [20357] math: Incorrect cos result for 1.5174239687223976
2122 [20384] build: Don't run libmvec-sincos-avx* tests on non avx machines
2126 * Unicode 8.0.0 Support: Character encoding, character type info, and
2127 transliteration tables are all updated to Unicode 8.0.0, using new
2128 and/or improved generator scripts contributed by Mike FABIAN (Red Hat).
2129 These updates cause user visible changes, such as the fixes for bugs
2130 89, 16061, and 18568.
2132 * sched_setaffinity, pthread_setaffinity_np no longer attempt to guess the
2133 kernel-internal CPU set size. This means that requests that change the
2134 CPU affinity which failed before (for example, an all-ones CPU mask) will
2135 now succeed. Applications that need to determine the effective CPU
2136 affinities need to call sched_getaffinity or pthread_getaffinity_np after
2137 setting it because the kernel can adjust it (and the previous size check
2138 would not detect this in the majority of cases).
2140 * The fts.h header can now be used with -D_FILE_OFFSET_BITS=64. With LFS
2141 the following new symbols are used: fts64_children, fts64_close,
2142 fts64_open, fts64_read and fts64_set.
2144 * getaddrinfo now detects certain invalid responses on an internal netlink
2145 socket. If such responses are received, an affected process will
2146 terminate with an error message of "Unexpected error <number> on netlink
2147 descriptor <number>" or "Unexpected netlink response of size <number> on
2148 descriptor <number>". The most likely cause for these errors is a
2149 multi-threaded application which erroneously closes and reuses the netlink
2150 file descriptor while it is used by getaddrinfo.
2152 * A defect in the malloc implementation, present since glibc 2.15 (2012) or
2153 glibc 2.10 via --enable-experimental-malloc (2009), could result in the
2154 unnecessary serialization of memory allocation requests across threads.
2155 The defect is now corrected. Users should see a substantial increase in
2156 the concurent throughput of allocation requests for applications which
2157 trigger this bug. Affected applications typically create and
2158 destroy threads frequently. (Bug 19048 was reported and analyzed by
2161 * There is now a --disable-timezone-tools configure option for disabling the
2162 building and installing of the timezone related utilities (zic, zdump, and
2163 tzselect). This is useful for people who build the timezone data and code
2164 independent of the GNU C Library.
2166 * The obsolete header <regexp.h> has been removed. Programs that require
2167 this header must be updated to use <regex.h> instead.
2169 * The obsolete functions bdflush, create_module, get_kernel_syms,
2170 query_module and uselib are no longer available to newly linked binaries;
2171 the header <sys/kdaemon.h> has been removed. These functions and header
2172 were specific to systems using the Linux kernel and could not usefully be
2173 used with the GNU C Library on systems with version 2.6 or later of the
2176 * Optimized string, wcsmbs and memory functions for IBM z13.
2177 Implemented by Stefan Liebler.
2179 * Newly linked programs that define a variable called signgam will no longer
2180 have it set by the lgamma, lgammaf and lgammal functions. Programs that
2181 require signgam to be set by those functions must ensure that they use the
2182 variable provided by the GNU C Library and declared in <math.h>, without
2183 defining their own copy.
2185 * The minimum GCC version that can be used to build this version of the GNU
2186 C Library is GCC 4.7. Older GCC versions, and non-GNU compilers, can
2187 still be used to compile programs using the GNU C Library.
2189 Security related changes:
2191 * An out-of-bounds value in a broken-out struct tm argument to strftime no
2192 longer causes a crash. Reported by Adam Nielsen. (CVE-2015-8776)
2194 * The LD_POINTER_GUARD environment variable can no longer be used to disable
2195 the pointer guard feature. It is always enabled. Previously,
2196 LD_POINTER_GUARD could be used to disable security hardening in binaries
2197 running in privileged AT_SECURE mode. Reported by Hector Marco-Gisbert.
2200 * An integer overflow in hcreate and hcreate_r could lead to an
2201 out-of-bounds memory access. Reported by Szabolcs Nagy. (CVE-2015-8778)
2203 * The catopen function no longer has unbounded stack usage. Reported by
2204 Max. (CVE-2015-8779)
2206 * The nan, nanf and nanl functions no longer have unbounded stack usage
2207 depending on the length of the string passed as an argument to the
2208 functions. Reported by Joseph Myers. (CVE-2014-9761)
2210 * A stack-based buffer overflow was found in libresolv when invoked from
2211 libnss_dns, allowing specially crafted DNS responses to seize control
2212 of execution flow in the DNS client. The buffer overflow occurs in
2213 the functions send_dg (send datagram) and send_vc (send TCP) for the
2214 NSS module libnss_dns.so.2 when calling getaddrinfo with AF_UNSPEC
2215 family. The use of AF_UNSPEC triggers the low-level resolver code to
2216 send out two parallel queries for A and AAAA. A mismanagement of the
2217 buffers used for those queries could result in the response of a query
2218 writing beyond the alloca allocated buffer created by
2219 _nss_dns_gethostbyname4_r. Buffer management is simplified to remove
2220 the overflow. Thanks to the Google Security Team and Red Hat for
2221 reporting the security impact of this issue, and Robert Holiday of
2222 Ciena for reporting the related bug 18665. (CVE-2015-7547)
2224 The following bugs are resolved with this release:
2226 [89] localedata: Locales nb_NO and nn_NO should transliterate æøå
2227 [887] math: Math library function "logb" and "nextafter" inconsistent
2228 [2542] math: Incorrect return from float gamma (-0X1.FA471547C2FE5P+1)
2229 [2543] math: Incorrect return from float gamma (-0X1.9260DCP+1)
2230 [2558] math: Incorrect return from double gamma (-0X1.FA471547C2FE5P+1)
2231 [2898] libc: [improve] warning: the use of `mktemp' is dangerous, better
2233 [4404] localedata: German translation of "Alarm clock" is misleading
2234 [6799] math: nextafter() and nexttoward() doen't set errno on
2235 overflow/underflow errors
2236 [6803] math: scalb(), scalbln(), scalbn() do not set errno on
2238 [10432] nis: _nss_nis_setnetgrent assertion failure
2239 [11460] libc: fts has no LFS support
2240 [12926] network: getaddrinfo()/make_request() may spin forever
2241 [13065] nptl: Race condition in pthread barriers
2242 [13690] nptl: pthread_mutex_unlock potentially cause invalid access
2243 [14341] dynamic-link: Dynamic linker crash when DT_JMPREL and DT_REL{,A}
2245 [14551] math: [ldbl-128ibm] strtold overflow handling for IBM long double
2246 [14912] libc: Rename non-installed bits/*.h headers
2247 [15002] libc: Avoid undefined behavior in posix_fallocate overflow check
2248 [15367] math: Let gcc use __builtin_isinf
2249 [15384] math: One constant fewer in ieee754/dbl-64/wordsize-64/s_finite.c
2250 [15421] math: lgamma wrongly sets signgam for ISO C
2251 [15470] math: [arm] On ARM llrintl() and llroundl() do not raise
2252 FE_INVALID with argument out of range
2253 [15491] math: [i386/x86_64] x86 nearbyint implementations wrongly clear
2255 [15786] dynamic-link: ifunc resolver functions can smash function
2257 [15918] math: Unnecessary check for equality in hypotf()
2258 [16061] localedata: Review / update transliteration data
2259 [16068] math: [i386/x86_64] x86 and x86_64 fesetenv exclude state they
2261 [16141] time: strptime %z offset restriction
2262 [16171] math: drem should be alias of remainder
2263 [16296] math: fegetround is pure?
2264 [16347] math: [ldbl-128ibm] ldbl-128/e_lgammal_r.c may not be suitable.
2265 [16364] libc: sleep may leave SIGCHLD blocked on sync cancellation on
2267 [16399] math: [mips] lrint / llrint / lround / llround missing exceptions
2268 [16415] math: Clean up ldbl-128 / ldbl-128ibm expm1l for large positive
2270 [16422] math: [powerpc] math-float, math-double failing llrint tests with
2271 "Exception "Inexact" set" on ppc32
2272 [16495] localedata: nl_NL: date_fmt: shuffle year/month around
2273 [16517] math: Missing underflow exception from tanf/tan/tanl
2274 [16519] math: Missing underflow exception from sinhf
2275 [16520] math: Missing underflow exception from tanhf
2276 [16521] math: Missing underflow exception from exp2
2277 [16620] math: [ldbl-128ibm] exp10l spurious overflows / bad directed
2279 [16734] stdio: fopen calls mmap to allocate its buffer
2280 [16961] math: nan function incorrect handling of bad sequences
2281 [16962] math: nan function unbounded stack allocation (CVE-2014-9761)
2282 [16973] localedata: Fix lang_lib/lang_term as per ISO 639-2
2283 [16985] locale: localedef: confusing error message when opening output
2285 [17118] math: ctanh(INFINITY + 2 * I) returns incorrect value
2286 [17197] locale: Redundant shift character in iconv conversion output at
2288 [17243] libc: trunk/posix/execl.c:53: va_args problem ?
2289 [17244] libc: trunk/sysdeps/unix/sysv/linux/semctl.c:116: va_args muxup ?
2290 [17250] dynamic-link: static linking breaks nss loading
2291 (getaddrinfo/getpwnam/etc...)
2292 [17404] libc: atomic_exchange_rel lacking a barrier on MIPS16, GCC before
2294 [17441] math: isnan() should use __builtin_isnan() in GCC
2295 [17514] nptl: Assert failure unlocking ERRORCHECK mutex after timedlock
2296 (related to lock elision)
2297 [17787] manual: Exponent on page 324 of the PDF ends prematurely
2298 [17886] time: strptime should be able to parse "Z" as a timezone with %z
2299 [17887] time: strptime should be able to parse "+01:00" style timezones
2300 [17905] libc: catopen() Multiple unbounded stack allocations
2302 [18084] libc: backtrace (..., 0) dumps core on x86
2303 [18086] libc: nice() sets errno to 0 on success
2304 [18240] libc: hcreate, hcreate_r should fail with ENOMEM if element count
2305 is too large (CVE-2015-8778)
2306 [18251] dynamic-link: SONAME missing when audit modules provides path
2307 [18265] libc: add attributes for wchar string and memory functions
2308 [18370] math: csqrt missing underflows
2309 [18421] libc: [hppa] read-only segment has dynamic relocations
2310 [18472] libc: Obsolete syscall wrappers should be compat symbols
2311 [18480] libc: hppa glibc miscompilation in sched_setaffinity()
2312 [18491] localedata: Update tr_TR LC_CTYPE as part of Unicode updates
2313 [18525] localedata: Remove locale timezone information
2314 [18560] libc: [powerpc] spurious bits/ipc.h definitions
2315 [18568] localedata: Update locale data to Unicode 8.0
2316 [18589] locale: sort-test.sh fails at random
2317 [18595] math: ctan, ctanh missing underflows
2318 [18604] libc: assert macro-expands its argument
2319 [18610] math: S390: fetestexcept() reports any exception if DXC-code
2320 contains a vector instruction exception.
2321 [18611] math: j1, jn missing errno setting on underflow
2322 [18618] localedata: sync Chechen locale definitions with other *_RU
2324 [18647] math: powf(-0x1.000002p0, 0x1p30) returns 0 instead of +inf
2325 [18661] libc: Some x86-64 assembly codes don't align stack to 16 bytes
2326 [18665] network: In send_dg, the recvfrom function is NOT always using the
2327 buffer size of a newly created buffer (CVE-2015-7547)
2328 [18674] libc: [i386] trunk/sysdeps/i386/tst-auditmod3b.c:84: possible
2330 [18675] libc: fpathconf(_PC_NAME_MAX) fails against large filesystems for
2332 [18681] libc: regexp.h is obsolete and buggy, and should be desupported
2333 [18699] math: tilegx cproj() for various complex infinities does not yield
2335 [18724] libc: Harden put*ent functions against data injection
2336 [18743] nptl: PowerPC: findutils testcase fails with --enable-lock-elision
2337 [18755] build: build errors with -DNDEBUG
2338 [18757] stdio: fmemopen fails to set errno on failure
2339 [18778] dynamic-link: ld.so crashes if failed dlopen causes libpthread to
2341 [18781] libc: openat64 lacks O_LARGEFILE
2342 [18787] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/atomic.h:71:6:
2343 error: can’t find a register in class ‘R1_REGS’ while reloading ‘asm’
2344 [18789] math: [ldbl-128ibm] sinhl inaccurate near 0
2345 [18790] math: [ldbl-128ibm] tanhl inaccurate
2346 [18795] libc: stpncpy fortification misses buffer lengths that are
2347 statically too large
2348 [18796] build: build fails for --disable-mathvec
2349 [18803] math: hypot missing underflows
2350 [18820] stdio: fmemopen may leak memory on failure
2351 [18823] math: csqrt spurious underflows
2352 [18824] math: fma spurious underflows
2353 [18825] math: pow missing underflows
2354 [18857] math: [ldbl-128ibm] nearbyintl wrongly uses signaling comparisons
2355 [18868] nptl: pthread_barrier_init typo has in-theory-undefined behavior
2356 [18870] build: sem_open.c fails to compile with missing symbol
2358 [18872] stdio: Fix memory leak in printf_positional
2359 [18873] libc: posix_fallocate overflow check ineffective
2360 [18875] math: Excess precision leads incorrect libm
2361 [18877] libc: arm: mmap offset regression
2362 [18887] libc: memory corruption when using getmntent on blank lines
2363 [18918] localedata: hu_HU: change time to HH:MM:SS format
2364 [18921] libc: Regression: extraneous stat() and fstat() performed by
2366 [18928] dynamic-link: LD_POINTER_GUARD is not ignored for privileged
2367 binaries (CVE-2015-8777)
2368 [18951] math: tgamma missing underflows
2369 [18952] math: [ldbl-128/ldbl-128ibm] lgammal spurious "invalid", incorrect
2371 [18953] localedata: lt_LT: change currency symbol to the euro
2372 [18956] math: powf inaccuracy
2373 [18961] math: [i386] exp missing underflows
2374 [18966] math: [i386] exp10 missing underflows
2375 [18967] math: math.h XSI POSIX namespace (gamma, isnan, scalb)
2376 [18969] build: multiple string test failures due to missing locale
2378 [18970] libc: Reference of pthread_setcancelstate in libc.a
2379 [18977] math: float / long double Bessel functions not in XSI POSIX
2380 [18980] math: i386 libm functions return with excess range and precision
2381 [18981] math: i386 scalb*, ldexp return with excess range and precision
2382 [18982] stdio: va_list and vprintf
2383 [18985] time: Passing out of range data to strftime() causes a segfault
2385 [19003] math: [x86_64] fma4 version of pow inappropriate contraction
2386 [19007] libc: FAIL: elf/check-localplt with -z now and binutils 2.26
2387 [19012] locale: iconv_open leaks memory on error path
2388 [19016] math: clog, clog10 inaccuracy
2389 [19018] nptl: Mangle function pointers in tls_dtor_list
2390 [19032] math: [i386] acosh (-qNaN) spurious "invalid" exception
2391 [19046] math: ldbl-128 / ldbl-128ibm lgamma bad overflow handling
2392 [19048] malloc: malloc: arena free list can become cyclic, increasing
2394 [19049] math: [powerpc] erfc incorrect zero sign
2395 [19050] math: [powerpc] log* incorrect zero sign
2396 [19058] math: [x86_64] Link fail with -fopenmp and -flto
2397 [19059] math: nexttoward overflow incorrect in non-default rounding modes
2398 [19071] math: ldbl-96 lroundl incorrect just below powers of 2
2399 [19074] network: Data race in _res_hconf_reorder_addrs
2400 [19076] math: [ldbl-128ibm] log1pl (-1) wrong sign of infinity
2401 [19077] math: [ldbl-128ibm] logl (1) incorrect sign of zero result
2402 [19078] math: [ldbl-128ibm] expl overflow incorrect in non-default
2404 [19079] math: dbl-64/wordsize-64 lround based on llround incorrect for
2406 [19085] math: ldbl-128 lrintl, lroundl missing exceptions for 32-bit long
2407 [19086] manual: posix_fallocate64 documented argument order is wrong.
2408 [19088] math: lround, llround missing exceptions close to overflow
2410 [19094] math: lrint, llrint missing exceptions close to overflow threshold
2411 [19095] math: dbl-64 lrint incorrect for 64-bit long
2412 [19122] dynamic-link: Unnecessary PLT relocations in librtld.os
2413 [19124] dynamic-link: ld.so failed to build with older assmebler
2414 [19125] math: [powerpc32] llroundf, llround incorrect exceptions
2415 [19129] dynamic-link: [arm] Concurrent lazy TLSDESC resolution can crash
2416 [19134] math: [powerpc32] lround, lroundf spurious exceptions
2417 [19137] libc: i386/epoll_pwait.S doesn't support cancellation
2418 [19143] nptl: Remove CPU set size checking from sched_setaffinity,
2419 pthread_setaffinity_np
2420 [19156] math: [ldbl-128] j0l spurious underflows
2421 [19164] nptl: tst-getcpu fails with many possible CPUs
2422 [19168] math: math/test-ildoubl and math/test-ldouble failure
2423 [19174] nptl: PowerPC: TLE enabled pthread mutex performs poorly.
2424 [19178] dynamic-link: ELF_RTYPE_CLASS_EXTERN_PROTECTED_DATA confuses
2426 [19181] math: [i386/x86_64] fesetenv (FE_DFL_ENV), fesetenv
2427 (FE_NOMASK_ENV) do not clear SSE exceptions
2428 [19182] malloc: malloc deadlock between ptmalloc_lock_all and
2429 _int_new_arena/reused_arena
2430 [19189] math: [ldbl-128] log1pl (-qNaN) spurious "invalid" exception
2431 [19201] math: dbl-64 remainder incorrect sign of zero result
2432 [19205] math: bits/math-finite.h conditions do not match math.h and
2434 [19209] math: bits/math-finite.h wrongly maps ldexp to scalbn
2435 [19211] math: lgamma functions do not set signgam for -ffinite-math-only
2436 for C99-based standards
2437 [19212] libc: features.h not -Wundef clean
2438 [19213] math: [i386/x86_64] log* (1) incorrect zero sign for -ffinite-
2440 [19214] libc: Family and model identification for AMD CPU's are incorrect.
2441 [19219] libc: GLIBC build fails for ia64 with missing __nearbyintl
2442 [19228] math: [powerpc] nearbyint wrongly clears "inexact", leaves traps
2444 [19235] math: [powerpc64] lround, lroundf, llround, llroundf spurious
2445 "inexact" exceptions
2446 [19238] math: [powerpc] round, roundf spurious "inexact" for integer
2448 [19242] libc: strtol incorrect in Turkish locales
2449 [19243] malloc: reused_arena can pick an arena on the free list, leading
2450 to an assertion failure and reference count corruption
2451 [19253] time: tzset() ineffective when temporary TZ did not include DST
2453 [19266] math: strtod ("NAN(I)") incorrect in Turkish locales
2454 [19270] math: [hppa] Shared libm missing __isnanl
2455 [19285] libc: [hppa] sysdeps/unix/sysv/linux/hppa/bits/mman.h: missing
2456 MAP_HUGETLB and MAP_STACK defines
2457 [19313] nptl: Wrong __cpu_mask for x32
2458 [19347] libc: grantpt: try to force a specific gid even without pt_chown
2459 [19349] math: [ldbl-128ibm] tanhl inaccurate for small arguments
2460 [19350] math: [ldbl-128ibm] sinhl spurious overflows
2461 [19351] math: [ldbl-128ibm] logl inaccurate near 1
2462 [19363] time: x32: times() return value wrongly truncates/sign extends
2464 [19367] dynamic-link: Improve branch prediction on Silvermont
2465 [19369] network: Default domain name not reset by res_ninit when "search"
2466 / "domain" entry is removed from resolv.conf
2467 [19375] math: powerpc: incorrect results for POWER7 logb with negative
2469 [19385] localedata: bg_BG: time separator should be colon, not comma
2470 [19408] libc: linux personality syscall wrapper may erroneously return an
2471 error on 32-bit architectures
2472 [19415] libc: dladdr returns wrong names on hppa
2473 [19432] libc: iconv rejects redundant escape sequences in IBM900, IBM903,
2474 IBM905, IBM907, and IBM909
2475 [19439] math: Unix98 isinf and isnan functions conflict with C++11
2476 [19443] build: build failures with -DDEBUG
2477 [19451] build: Make check fails on test-double-vlen2
2478 [19462] libc: Glibc failed to build with -Os
2479 [19465] math: Wrong code with -Os
2480 [19466] time: time/tst-mktime2.c is compiled into an infinite loop with
2482 [19467] string: Fast_Unaligned_Load needs to be enabled for Excavator core
2484 [19475] libc: Glibc 2.22 doesn't build on sparc [PATCH]
2485 [19486] math: S390: Math tests fail with "Exception Inexact set".
2486 [19529] libc: [ARM]: FAIL: stdlib/tst-makecontext
2487 [19550] libc: [mips] mmap negative offset handling inconsistent with other
2489 [19590] math: Fail to build shared objects that use libmvec.so functions.
2493 * The following bugs are resolved with this release:
2495 438, 2981, 4719, 6544, 6792, 11216, 12836, 13028, 13064, 13151, 13152,
2496 14094, 14113, 14292, 14841, 14906, 14958, 15319, 15467, 15790, 15969,
2497 16159, 16339, 16350, 16351, 16352, 16353, 16361, 16512, 16526, 16538,
2498 16559, 16560, 16704, 16783, 16850, 17053, 17090, 17195, 17269, 17293,
2499 17322, 17403, 17475, 17523, 17542, 17569, 17581, 17588, 17596, 17620,
2500 17621, 17628, 17631, 17692, 17711, 17715, 17776, 17779, 17792, 17833,
2501 17836, 17841, 17912, 17916, 17930, 17932, 17944, 17949, 17964, 17965,
2502 17967, 17969, 17977, 17978, 17987, 17991, 17996, 17998, 17999, 18007,
2503 18019, 18020, 18029, 18030, 18032, 18034, 18036, 18038, 18039, 18042,
2504 18043, 18046, 18047, 18049, 18068, 18078, 18080, 18093, 18100, 18104,
2505 18110, 18111, 18116, 18125, 18128, 18134, 18138, 18185, 18196, 18197,
2506 18206, 18210, 18211, 18217, 18219, 18220, 18221, 18234, 18244, 18245,
2507 18247, 18287, 18319, 18324, 18333, 18346, 18371, 18383, 18397, 18400,
2508 18409, 18410, 18412, 18418, 18422, 18434, 18444, 18457, 18468, 18469,
2509 18470, 18479, 18483, 18495, 18496, 18497, 18498, 18502, 18507, 18508,
2510 18512, 18513, 18519, 18520, 18522, 18527, 18528, 18529, 18530, 18532,
2511 18533, 18534, 18536, 18539, 18540, 18542, 18544, 18545, 18546, 18547,
2512 18549, 18553, 18557, 18558, 18569, 18583, 18585, 18586, 18592, 18593,
2513 18594, 18602, 18612, 18613, 18619, 18633, 18635, 18641, 18643, 18648,
2514 18657, 18676, 18694, 18696, 18887.
2516 * Cache information can be queried via sysconf() function on s390 e.g. with
2517 _SC_LEVEL1_ICACHE_SIZE as argument.
2519 * A buffer overflow in gethostbyname_r and related functions performing DNS
2520 requests has been fixed. If the NSS functions were called with a
2521 misaligned buffer, the buffer length change due to pointer alignment was
2522 not taken into account. This could result in application crashes or,
2523 potentially arbitrary code execution, using crafted, but syntactically
2524 valid DNS responses. (CVE-2015-1781)
2526 * The time zone file parser has been made more robust against crafted time
2527 zone files, avoiding heap buffer overflows related to the processing of
2528 the tzh_ttisstdcnt and tzh_ttisgmtcnt fields, and a stack overflow due to
2529 large time zone data files. Overly long time zone specifiers in the TZ
2530 variable no longer result in stack overflows and crashes.
2532 * A powerpc and powerpc64 optimization for TLS, similar to TLS descriptors
2533 for LD and GD on x86 and x86-64, has been implemented. You will need
2534 binutils-2.24 or later to enable this optimization.
2536 * Character encoding and ctype tables were updated to Unicode 7.0.0, using
2537 new generator scripts contributed by Pravin Satpute and Mike FABIAN (Red
2538 Hat). These updates cause user visible changes, such as the fix for bug
2541 * CVE-2014-8121 The NSS backends shared internal state between the getXXent
2542 and getXXbyYY NSS calls for the same database, causing a denial-of-service
2543 condition in some applications.
2545 * Added vector math library named libmvec with the following vectorized x86_64
2546 implementations: cos, cosf, sin, sinf, sincos, sincosf, log, logf, exp, expf,
2548 The library can be disabled with --disable-mathvec. Use of the functions is
2549 enabled with -fopenmp -ffast-math starting from -O1 for GCC version >= 4.9.0.
2550 Shared library libmvec.so is linked in as needed when using -lm (no need to
2551 specify -lmvec explicitly for not static builds).
2552 Visit <https://sourceware.org/glibc/wiki/libmvec> for detailed information.
2554 * A new fmemopen implementation has been added with the goal of POSIX
2555 compliance. The new implementation fixes the following long-standing
2556 issues: BZ#6544, BZ#11216, BZ#12836, BZ#13151, BZ#13152, and BZ#14292. The
2557 old implementation is still present for use be by existing binaries.
2559 * The 32-bit sparc sigaction ABI was inadvertently broken in the 2.20 and 2.21
2560 releases. It has been fixed to match 2.19 and older, but binaries built
2561 against 2.20 and 2.21 might need to be recompiled. See BZ#18694.
2563 * Port to Native Client running on ARMv7-A (--host=arm-nacl).
2564 Contributed by Roland McGrath (Google).
2566 * The header <regexp.h> is deprecated, and will be removed in a future
2567 release. Use of this header will trigger a deprecation warning.
2568 Application developers should update their code to use <regex.h> instead.
2570 This header was formerly part of SUS, but was deprecated in 1994 and
2571 removed from the standard in 2001. Also, the glibc implementation
2572 leaks memory. See BZ#18681 for more details.
2576 * The following bugs are resolved with this release:
2578 6652, 10672, 12674, 12847, 12926, 13862, 14132, 14138, 14171, 14498,
2579 15215, 15378, 15884, 16009, 16418, 16191, 16469, 16576, 16617, 16618,
2580 16619, 16657, 16740, 16857, 17192, 17266, 17273, 17344, 17363, 17370,
2581 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522, 17555,
2582 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585, 17589,
2583 17594, 17601, 17608, 17616, 17625, 17630, 17633, 17634, 17635, 17647,
2584 17653, 17657, 17658, 17664, 17665, 17668, 17682, 17702, 17717, 17719,
2585 17722, 17723, 17724, 17725, 17732, 17733, 17744, 17745, 17746, 17747,
2586 17748, 17775, 17777, 17780, 17781, 17782, 17791, 17793, 17796, 17797,
2587 17801, 17803, 17806, 17834, 17844, 17848, 17868, 17869, 17870, 17885,
2590 * CVE-2015-1472 CVE-2015-1473 Under certain conditions wscanf can allocate
2591 too little memory for the to-be-scanned arguments and overflow the
2592 allocated buffer. The implementation now correctly computes the required
2593 buffer size when using malloc, and switches to malloc from alloca as
2596 * A new semaphore algorithm has been implemented in generic C code for all
2597 machines. Previous custom assembly implementations of semaphore were
2598 difficult to reason about or ensure that they were safe. The new version
2599 of semaphore supports machines with 64-bit or 32-bit atomic operations.
2600 The new semaphore algorithm is used by sem_init, sem_open, sem_post,
2601 sem_wait, sem_timedwait, sem_trywait, and sem_getvalue.
2603 * Port to Altera Nios II has been contributed by Mentor Graphics.
2605 * Optimized strcpy, stpcpy, strncpy, stpncpy, strcmp, and strncmp
2606 implementations for powerpc64/powerpc64le.
2607 Implemented by Adhemerval Zanella (IBM).
2609 * Added support for TSX lock elision of pthread mutexes on powerpc32, powerpc64
2610 and powerpc64le. This may improve lock scaling of existing programs on
2611 HTM capable systems. The lock elision code is only enabled with
2612 --enable-lock-elision=yes. Also, the TSX lock elision implementation for
2613 powerpc will issue a transaction abort on every syscall to avoid side
2614 effects being visible outside transactions.
2616 * Optimized strcpy, stpcpy, strchrnul and strrchr implementations for
2617 AArch64. Contributed by ARM Ltd.
2619 * i386 memcpy functions optimized with SSE2 unaligned load/store.
2621 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
2622 under certain input conditions resulting in the execution of a shell for
2623 command substitution when the application did not request it. The
2624 implementation now checks WRDE_NOCMD immediately before executing the
2625 shell and returns the error WRDE_CMDSUB as expected.
2627 * CVE-2012-3406 printf-style functions could run into a stack overflow when
2628 processing format strings with a large number of format specifiers.
2630 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
2631 infinite loop if the DNS response contained a PTR record of an unexpected
2634 * The minimum GCC version that can be used to build this version of the GNU
2635 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
2636 still be used to compile programs using the GNU C Library.
2638 * The GNU C Library is now built with -Werror by default. This can be
2639 disabled by configuring with --disable-werror.
2641 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
2643 * The obsolete sigvec function has been removed. This was the original
2644 4.2BSD interface that inspired the POSIX.1 sigaction interface, which
2645 programs have been using instead for about 25 years. Of course, ABI
2646 compatibility for old binaries using sigvec remains intact.
2648 * Merged gettext 0.19.3 into the intl subdirectory. This fixes building
2649 with newer versions of bison.
2651 * Support for MIPS o32 FPXX, FP64A and FP64 ABI Extensions.
2652 The original MIPS o32 hard-float ABI requires an FPU where double-precision
2653 registers overlay two consecutive single-precision registers. MIPS32R2
2654 introduced a new FPU mode (FR=1) where double-precision registers extend the
2655 corresponding single-precision registers which is incompatible with the
2656 o32 hard-float ABI. The MIPS SIMD ASE and the MIPSR6 architecture both
2657 require the use of FR=1 making a transition necessary. New o32 ABI
2658 extensions enable users to migrate over time from the original o32 ABI
2659 through to the updated o32 FP64 ABI. To achieve this the dynamic linker now
2660 tracks the ABI of any loaded object and verifies that new objects are
2661 compatible. Mode transitions will also be requested as required and
2662 unsupportable objects will be rejected. The ABI checks include both soft and
2663 hard float ABIs for o32, n32 and n64.
2665 GCC 5 with GNU binutils 2.25 onwards:
2666 It is strongly recommended that all o32 system libraries are built using the
2667 new o32 FPXX ABI (-mfpxx) to facilitate the transition as this is compatible
2668 with the original and all new o32 ABI extensions. Configure a MIPS GCC
2669 compiler using --with-fp-32=xx to set this by default.
2673 * The following bugs are resolved with this release:
2675 6804, 9894, 11505, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347,
2676 15514, 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198,
2677 16275, 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447,
2678 16516, 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600,
2679 16609, 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639,
2680 16642, 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689,
2681 16695, 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739,
2682 16740, 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791,
2683 16796, 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849,
2684 16854, 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912,
2685 16915, 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958,
2686 16965, 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022,
2687 17031, 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078,
2688 17079, 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150,
2689 17153, 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
2691 * Reverted change of ABI data structures for s390 and s390x:
2692 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
2693 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
2694 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
2695 are preserved pointing straight to the same implementation as the old ones.
2696 Given that, new callers will simply provide a too-big buffer to these
2697 functions. Any applications/libraries out there that embed jmp_buf or
2698 ucontext_t in an ABI-relevant data structure that have already been rebuilt
2699 against 2.19 headers will have to rebuilt again. This is necessary in any
2700 case to revert the breakage in their ABI caused by the glibc change.
2702 * Support for file description locks is added to systems running the
2703 Linux kernel. The standard file locking interfaces are extended to
2704 operate on file descriptions, not file descriptors, via the use of
2705 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
2706 are associated with an open file instead of a process.
2708 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
2710 * The minimum Linux kernel version that this version of the GNU C Library
2711 can be used with is 2.6.32.
2713 * Running the testsuite no longer terminates as soon as a test fails.
2714 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
2715 with PASS or FAIL lines for individual tests. A summary of the results is
2716 printed, including a list of failing lists, and "make check" exits with
2717 error status if there were any unexpected failures. "make check
2718 stop-on-test-failure=y" may be used to keep the old behavior.
2720 * The am33 port, which had not worked for several years, has been removed
2723 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
2724 supported; they now act the same as _DEFAULT_SOURCE (but generate a
2725 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
2726 conflicted with POSIX (support for which was removed in 2.19), the
2727 interfaces those macros enabled remain available when compiling with
2728 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
2729 test macros defined.
2731 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
2733 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
2734 This may improve lock scaling of existing programs on TX capable systems.
2735 The lock elision code is only built with --enable-lock-elision=yes and
2736 then requires a GCC version supporting the TX builtins. With lock elision
2737 default mutexes are elided via __builtin_tbegin, if the cpu supports
2738 transactions. By default lock elision is not enabled and the elision code
2741 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
2742 copy the path argument. This allowed programs to cause posix_spawn to
2743 deference a dangling pointer, or use an unexpected pathname argument if
2744 the string was modified after the posix_spawn_file_actions_addopen
2747 * All supported architectures now use the main glibc sysdeps directory
2748 instead of some being in a separate "ports" directory (which was
2749 distributed separately before glibc 2.17).
2751 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
2752 On configurations that support it (all Linux configurations), it's now
2753 used regardless of the --enable-add-ons switch to configure. It is no
2754 longer possible to build such configurations without pthreads support.
2756 * Locale names, including those obtained from environment variables (LANG
2757 and the LC_* variables), are more tightly checked for proper syntax.
2758 setlocale will now fail (with EINVAL) for locale names that are overly
2759 long, contain slashes without starting with a slash, or contain ".." path
2760 components. (CVE-2014-0475) Previously, some valid locale names were
2761 silently replaced with the "C" locale when running in AT_SECURE mode
2762 (e.g., in a SUID program). This is no longer necessary because of the
2765 * On x86-64, the dynamic linker's lazy-binding support is now compatible
2766 with application code using Intel MPX instructions. (With all previous
2767 versions, the MPX register state could be clobbered when making calls
2768 into or out of a shared library.) Note that while the new dynamic
2769 linker is compatible with all known x86 hardware whether or not it
2770 supports Intel MPX, some x86 instruction-set emulators might fail to
2771 handle the new instruction encodings. This is known to affect Valgrind
2772 versions up through 3.9 (but will be fixed in the forthcoming 3.10
2773 release), and might affect other tools that do instruction emulation.
2775 * Support for loadable gconv transliteration modules has been removed.
2776 The support for transliteration modules has been non-functional for
2777 over a decade, and the removal is prompted by security defects. The
2778 normal gconv conversion modules are still supported. Transliteration
2779 with //TRANSLIT is still possible, and the //IGNORE specifier
2780 continues to be supported. (CVE-2014-5119)
2782 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
2783 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
2784 resulting a denial-of-service security vulnerability in applications which
2785 use functions related to iconv. (CVE-2014-6040)
2789 * The following bugs are resolved with this release:
2791 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
2792 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
2793 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
2794 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
2795 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
2796 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
2797 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
2798 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
2799 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
2800 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
2801 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
2802 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
2803 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
2804 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
2805 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
2806 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
2807 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
2808 16431, 16453, 16474, 16506, 16510, 16529
2810 * Slovenian translations for glibc messages have been contributed by the
2811 Translation Project's Slovenian team of translators.
2813 * The public headers no longer use __unused nor __block. This change is to
2814 support compiling programs that are derived from BSD sources and use
2815 __unused internally, and to support compiling with Clang's -fblock
2816 extension which uses __block.
2818 * CVE-2012-4412 The strcoll implementation caches indices and rules for
2819 large collation sequences to optimize multiple passes. This cache
2820 computation may overflow for large collation sequences and may cause a
2821 stack or buffer overflow. This is now fixed to use a slower algorithm
2822 which does not use a cache if there is an integer overflow.
2824 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
2825 rules for large collation sequences to optimize multiple passes and falls
2826 back to alloca if malloc fails, resulting in a possible stack overflow.
2827 The implementation now falls back to an uncached collation sequence lookup
2830 * CVE-2013-4788 The pointer guard used for pointer mangling was not
2831 initialized for static applications resulting in the security feature
2832 being disabled. The pointer guard is now correctly initialized to a
2833 random value for static applications. Existing static applications need
2834 to be recompiled to take advantage of the fix (bug 15754).
2836 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
2837 to the d_name member of struct dirent, or omit the terminating NUL
2838 character. (Bugzilla #14699).
2840 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
2841 aligned_alloc functions could allocate too few bytes or corrupt the
2842 heap when passed very large allocation size values (Bugzilla #15855,
2845 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
2846 for AF_INET6 has been fixed (Bugzilla #16072).
2848 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
2849 pap_CW, quz_PE, the_NP.
2851 * Substantially revised locales: gd_GB, ht_HT
2853 * The LC_ADDRESS field was updated to support country_car for almost all
2856 * ISO 1427 definitions were updated.
2858 * ISO 3166 definitions were updated.
2860 * The localedef utility now supports --big-endian and --little-endian
2861 command-line options to generate locales for a different system from that
2862 for which the C library was built.
2864 * Binary locale files now only depend on the endianness of the system for
2865 which they are generated and not on other properties of that system. As a
2866 consequence, binary files generated with new localedef may be incompatible
2867 with old versions of the GNU C Library, and binary files generated with
2868 old localedef may be incompatible with this version of the GNU C Library,
2869 in the following circumstances:
2871 + Locale files may be incompatible on m68k systems.
2873 + Locale archive files (but not separate files for individual locales) may
2874 be incompatible on systems where plain "char" is signed.
2876 * The configure option --disable-versioning has been removed. Builds with
2877 --disable-versioning had not worked for several years.
2879 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
2880 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
2882 * SystemTap probes for malloc have been introduced.
2884 * SystemTap probes for slow multiple precision fallback paths of
2885 transcendental functions have been introduced.
2887 * Support for powerpc64le has been added.
2889 * The soft-float powerpc port now supports e500 processors.
2891 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
2893 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
2894 set of header declarations that are enabled by default, even when other
2895 feature test macros or compiler options such as -std=c99 would otherwise
2896 disable some of those declarations.
2898 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
2899 conflict with POSIX. The libbsd-compat library (which was a dummy library
2900 that did nothing) has also been removed.
2902 * Preliminary documentation about Multi-Thread, Async-Signal and
2903 Async-Cancel Safety has been added.
2905 * Change of ABI data structures for s390 and s390x:
2906 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
2907 allow for future hardware extensions. All library functions that accept or
2908 return these structures were versioned in order to provide backwards
2909 compatibility with existing code. However, not all cases can be handled
2910 with interface versioning. If an application embeds either structure into
2911 another structure and that structure is passed to another compilation unit
2912 which expects the newer larger-sized object then any access to the new
2913 fields will result in undefined behaviour. Similarly any access to fields
2914 that were moved by the enlarging of the structures will cause undefined
2915 behaviour. To fix the undefined behaviour all objects that are part of the
2916 final in-memory image must agree on the size of structures, and this may
2917 require recompilation.
2921 * The following bugs are resolved with this release:
2923 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
2924 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
2925 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
2926 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14941,
2927 14952, 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003,
2928 15006, 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062,
2929 15078, 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234,
2930 15283, 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335,
2931 15336, 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381,
2932 15394, 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424,
2933 15426, 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485,
2934 15488, 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577,
2935 15583, 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711,
2938 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
2939 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
2940 Distributions can re-enable building and using pt_chown via the new configure
2941 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
2942 considerable security risks and should only be used if the distribution
2943 understands and accepts the risks.
2945 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
2948 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
2949 fixed (Bugzilla #15330).
2951 * Add support for calling C++11 thread_local object destructors on thread
2952 and program exit. This needs compiler support for offloading C++11
2953 destructor calls to glibc.
2955 * Improved worst case performance of libm functions with double inputs and
2958 * Support for priority inherited mutexes in pthread condition variables on
2959 non-x86 architectures.
2961 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
2963 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
2965 * Optimized string functions for ARM. Implemented by Will Newton and
2968 * Optimized libm functions for SPARC. Implemented by David S. Miller.
2970 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
2973 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
2974 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
2976 * Added a benchmark framework to track performance of functions in glibc.
2978 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
2979 It is based on draft TS 18661 and currently enabled as a GNU extension.
2981 * On Linux, the clock function now uses the clock_gettime system call
2982 for improved precision, rather than old times system call.
2984 * Added support for version-3 tz format files. This is needed when using
2985 the tz database release 2013e or later, and affects a few unusual cases --
2986 currently only TZ='America/Godthab' for time stamps after 2037.
2988 * Added new API functions pthread_getattr_default_np and
2989 pthread_setattr_default_np to get and set the default pthread
2990 attributes of a process.
2992 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
2993 This may improve lock scaling of existing programs on TSX capable systems.
2994 When the --enable-lock-elision=yes parameter is specified at configure
2995 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
2998 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
2999 availability). Implemented by Ryan S. Arnold.
3001 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
3005 * The following bugs are resolved with this release:
3007 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
3008 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
3009 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
3010 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
3011 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
3012 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
3013 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
3014 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
3015 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
3016 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
3017 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
3018 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
3019 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
3020 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
3021 14879, 14889, 14893, 14898, 14914.
3023 * Optimization of memcpy for MIPS.
3025 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
3026 EMFILE has been fixed (Bugzilla #14889).
3028 * The add-on ports collection is now distributed in the "ports" subdirectory
3029 of the main GNU C Library distribution, rather than separately.
3031 * Port to ARM AArch64 contributed by Linaro.
3033 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
3034 Optimized versions of memcpy, memset, and memcmp added for System z10 and
3036 Implemented by Andreas Krebbel.
3038 * The new function secure_getenv allows secure access to the environment,
3039 returning NULL if running in a SUID/SGID process. This function replaces
3040 the internal function __secure_getenv.
3042 * SystemTap static probes have been added into the dynamic linker.
3043 Implemented by Gary Benson.
3045 * Optimizations of string functions strstr, strcasestr and memmem.
3046 Implemented by Maxim Kuvyrkov.
3048 * The minimum Linux kernel version that this version of the GNU C Library
3049 can be used with is 2.6.16.
3051 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
3052 powerpc POWER7. Implemented by Will Schmidt.
3054 * New configure option --disable-nscd builds the C library such that it
3055 never attempts to contact the Name Service Caching Daemon (nscd).
3056 New configure option --disable-build-nscd avoids building nscd itself;
3057 this is the default if --disable-nscd is used.
3059 * Improved support for cross-compilation, including cross-testing and
3060 bootstrap builds without a previously built glibc.
3062 * Several testsuite tests are now able to test multiple IFUNC variants of an
3063 interface, rather than just testing the one that would be chooen by
3066 * New configure options --with-bugurl and --with-pkgversion, for
3067 distributors to use to embed their bug-reporting and package version
3068 information in --help and --version output.
3070 * The ttyname and ttyname_r functions on Linux now fall back to searching for
3071 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
3072 allows creation of chroots without the procfs mounted on /proc.
3074 * The `crypt' function now fails if passed salt bytes that violate the
3075 specification for those values. On Linux, the `crypt' function will
3076 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
3077 enabled, and fail on encrypted strings using the MD5 or DES algorithm
3078 when the mode is enabled.
3080 * The `clock_*' suite of functions (declared in <time.h>) is now available
3081 directly in the main C library. Previously it was necessary to link with
3082 -lrt to use these functions. This change has the effect that a
3083 single-threaded program that uses a function such as `clock_gettime' (and
3084 is not linked with -lrt) will no longer implicitly load the pthreads
3085 library at runtime and so will not suffer the overheads associated with
3086 multi-thread support in other code such as the C++ runtime library.
3088 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
3093 * The following bugs are resolved with this release:
3095 174, 208, 350, 369, 411, 706, 766, 2074, 2541, 2547, 2548, 2550, 2551,
3096 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678, 3335,
3097 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596, 4822,
3098 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794, 6884,
3099 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135, 10140,
3100 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 10882, 11174,
3101 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
3102 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
3103 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
3104 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
3105 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
3106 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
3107 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
3108 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
3109 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
3110 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
3111 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
3112 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
3113 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
3114 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
3115 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
3116 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
3119 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
3120 configuring glibc with:
3121 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
3122 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
3123 Implemented by H.J. Lu.
3127 + define static_assert
3129 + do not declare gets
3131 + declare at_quick_exit and quick_exit also for ISO C11
3133 + aligned_alloc. NB: The code is deliberately allows the size parameter
3134 to not be a multiple of the alignment. This is a moronic requirement
3135 in the standard but it is only a requirement on the caller, not the
3138 + timespec_get added
3140 + uchar.h support added
3142 + CMPLX, CMPLXF, CMPLXL added
3144 Implemented by Ulrich Drepper.
3146 * Support for the IA-64 has been moved to ports.
3148 * Remove support for anything but ELF binary format
3150 * Checking versions of poll, ppoll added.
3151 Implemented by Ulrich Drepper.
3153 * More generic and 64-bit performance optimizations to math functions.
3154 Implemented by Ulrich Drepper.
3156 * New configure option --enable-obsolete-rpc makes the deprecated RPC
3157 headers and functions available at compile time as they were before
3158 version 2.14. This option will be removed at some time in the future
3159 after the TI-RPC library becomes fully sufficient for the needs of
3160 existing applications.
3162 * Compatibility code for Linux kernel versions before 2.4 has been removed.
3163 Note that glibc is not expected to work with any Linux kernel version
3166 * New header <sys/auxv.h> and function getauxval allowing easy access to
3167 the AT_* key-value pairs passed from the Linux kernel. The header also
3168 defines the HWCAP_* bits associated with the AT_HWCAP key.
3170 * New locales: mag_IN
3172 * New configure option --enable-systemtap builds SystemTap static probes
3173 into libc for setjmp and longjmp and into libpthread for various operations.
3174 So far the setjmp/longjmp probes and some of the libpthread probes are
3175 provided only for i*86 and x86_64.
3176 Implemented by Roland McGrath and Rayson Ho.
3178 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
3180 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
3183 * More optimized functions for SPARC. Implemented by David S. Miller.
3185 * Improved support for cross-compilation, especially bootstrap builds
3186 without a previously built glibc.
3188 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
3189 Chris Metcalf from Tilera.
3191 * Support for the old ARM ABI has been removed from ports. Only the EABI is
3192 now supported for ARM processors.
3194 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
3195 as the name of the dynamic linker, to distinguish it from the
3196 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
3198 * Support for CRIS has been removed from ports.
3200 * A new class of installed header has been documented for low-level
3201 platform-specific functionality. PowerPC added the first instance with a
3202 function to provide time base register access. Contributed by Tulio
3203 Magno Quites Machado Filho.
3205 * ix86 configurations now install header files that are consistent with
3206 what x86-64 configurations install. These same header files can be used
3207 for -m32, -m64, or -mx32 builds.
3208 Contributed by H.J. Lu.
3210 * Math library bug fixes. A thorough audit of all open math library bugs was
3211 conducted by Joseph Myers. Significant progress was made on many math
3212 library bugs resulting in more accurate exceptions and function results.
3213 Many thanks to all those that contributed including Andreas Jaeger for his
3214 patch review and work on the x87 trigonometric instruction issues.
3216 * Timezone data is no longer installed. Timezone-related binaries and scripts
3217 will continue to be installed. Users should obtain their timezone data from
3218 their distribution provider or from the tzdata package at
3219 <ftp://munnari.oz.au/pub/>.
3223 * The following bugs are resolved with this release:
3225 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
3226 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
3227 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
3228 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
3229 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
3230 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
3231 13484, 13506, 13515, 13523, 13524, 13538, 13540
3233 * New program pldd to list loaded object of a process
3234 Implemented by Ulrich Drepper.
3236 * Add nss_db support back to glibc. No more dependency on Berkeley db
3237 and support for initgroups lookups.
3238 Implemented by Ulrich Drepper.
3240 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
3241 Contributed by HJ Lu.
3243 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
3244 Contributed by HJ Lu.
3246 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
3247 on x86-32 and x86-64.
3248 Contributed by Liubov Dmitrieva.
3250 * Optimized strchr and strrchr for SSE on x86-32.
3251 Contributed by Liubov Dmitrieva.
3253 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
3254 for x86-64 and x86-32.
3255 Contributed by Liubov Dmitrieva.
3257 * New interfaces: scandirat, scandirat64
3258 Implemented by Ulrich Drepper.
3260 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
3261 Implemented by Ulrich Drepper.
3263 * nscd now also caches the netgroup database.
3264 Implemented by Ulrich Drepper.
3266 * Integrate libm with gcc's -ffinite-math-only option.
3267 Implemented by Ulrich Drepper.
3269 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
3270 to math functions. Implemented by Ulrich Drepper.
3272 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
3273 Implemented by Ulrich Drepper.
3275 * New Linux interfaces: process_vm_readv, process_vm_writev
3277 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
3278 Implemented by Ulrich Drepper.
3280 * Optimized nearbyint and strcasecmp for PPC.
3281 Implemented by Adhemerval Zanella.
3283 * New locales: bho_IN, unm_US, es_CU, ta_LK
3287 * The following bugs are resolved with this release:
3289 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
3290 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
3291 11781, 11799, 11820, 11837, 11857, 11884, 11892, 11895, 11901, 11945,
3292 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
3293 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
3294 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
3295 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
3296 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
3297 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
3298 12795, 12811, 12813, 12814, 12841
3300 * The RPC implementation in libc is obsoleted. Old programs keep working
3301 but new programs cannot be linked with the routines in libc anymore.
3302 Programs in need of RPC functionality must be linked against TI-RPC.
3303 The TI-RPC implementation is IPv6 enabled and there are other benefits.
3305 Visible changes of this change include (obviously) the inability to link
3306 programs using RPC functions without referencing the TI-RPC library and the
3307 removal of the RPC headers from the glibc headers.
3308 Implemented by Ulrich Drepper.
3310 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
3311 syncfs, setns, sendmmsg
3313 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
3314 yue_HK, lij_IT, mhr_RU
3316 * New encodings: CP770, CP771, CP772, CP773, CP774
3318 * New program sotruss to trace calls through PLTs
3319 Implemented by Ulrich Drepper.
3321 * The malloc hook implementation is marked deprecated and will be removed
3322 from the default implementation in the next version. The design never
3323 worked ever since the introduction of threads. Even programs which do
3324 not create threads themselves can use multiple threads created internally.
3328 * The following bugs are resolved with this release:
3330 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
3331 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
3332 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
3333 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
3336 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
3338 * POWER7 optimizations: memset, memcmp, strncmp
3340 * New optimized string functions for x86-64: strnlen (SSE2),
3341 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
3342 Implemented by Ulrich Drepper.
3346 * The following bugs are resolved with this release:
3348 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
3349 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
3350 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
3351 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
3352 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
3353 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
3354 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
3355 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
3357 * New interfaces: pthread_getname_np, pthread_setname_np
3359 * New Linux interface: recvmmsg
3361 * STT_GNU_IFUNC implemented for Sparc by David Miller.
3363 * The dynamic linker now recognizes supported ABI versions from the
3364 EI_ABIVERSION field in the ELF header.
3365 Implemented by Ulrich Drepper.
3367 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
3368 will not be used to fill in password fields in the passwd.byname replies.
3369 Instead it is used to synthesize the shadow.byname table, should it be
3370 missing. This is a useful mode in some installations involving Solaris.
3371 Implemented by Ulrich Drepper.
3373 * New locales: kok_IN, sq_MK, cv_RU
3377 * The following bugs are resolved with this release:
3379 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
3380 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
3381 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
3382 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
3383 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
3384 10789, 10817, 10823, 10840, 10847
3386 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
3388 Implemented by Ulrich Drepper.
3390 * Checking version of longjmp added that fails if an uninitialized stack
3391 frame would be created. Implemented by Ulrich Drepper.
3393 * STT_GNU_IFUNC is now supported in static executables.
3394 Implemented by H.J. Lu.
3396 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
3398 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
3399 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
3400 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
3401 Contributed by H.J. Lu.
3403 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
3404 Implemented by Ulrich Drepper.
3406 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
3408 Contributed by H.J. Lu.
3410 * Support for fma instruction in AVX on x86-64.
3411 Implemented by H.J. Lu and Ulrich Drepper.
3413 * AVX support in x86-64 auditing support in ld.so.
3414 Implemented by H.J. Lu.
3416 * STB_GNU_UNIQUE support added.
3417 Implemented by Ulrich Drepper.
3419 * Implement second fallback mode for optimized DNS lookup for even more
3420 broken environments. If two requests from the same port are not
3421 handled correctly close the socket and open a new one before sending
3422 the second request. The 'single-request-reopen' option in /etc/resolv.conf
3423 can be used to select this mode right away, instead of rediscovering the
3424 necessity is every process again.
3425 Implemented by Ulrich Drepper.
3427 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
3428 Implemented by Adam Tkac.
3430 * Optimized iconv conversions for S390x.
3431 Implemented by Andreas Krebbel.
3433 * Using condvars with PI mutexes is now more efficient due to kernel
3434 support for requeueing to PI futexes. NPTL support added for x86-64.
3435 Implemented by Ulrich Drepper.
3437 * New locales: ps_AF, my_MM
3441 * The following bugs are resolved with this release:
3443 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
3444 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
3445 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
3446 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
3447 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
3449 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
3450 Implemented by Ulrich Drepper.
3452 * New Linux interfaces: accept4, fallocate, fallocate64.
3453 Implemented by Ulrich Drepper.
3455 * Correct declarations of string function when used in C++ code. This
3456 could lead to compile errors for invalid C++ code.
3458 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
3461 * New POSIX 2008 interface: psiginfo
3462 Implemented by Ulrich Drepper.
3464 * New ISO C++1x interfaces: quick_exit, at_quick_exit
3465 Implemented by Ulrich Drepper.
3467 * Support for selecting between multiple function definitions at runtime
3468 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
3470 * The libcrypt library can now use the hash function implementations in
3471 NSS. Implemented by Ulrich Drepper.
3473 * The malloc implementation can be compiled to be less memory efficient
3474 but higher performing in multi-threaded programs.
3475 Implemented by Ulrich Drepper.
3477 * New locales: nan_TW@latin, ks_IN
3479 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
3480 Implemented by Ulrich Drepper.
3482 * Extended printf hook support. It is possible to use user-defined types
3483 and extend existing format specifiers.
3484 Implemented by Ulrich Drepper.
3486 * Handling for group shadow files has been added.
3487 Implemented by Ulrich Drepper.
3489 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
3490 servers (the case, e.g., for some people using the built-in DNS
3491 server in ADSL modems/routers). There is a once-per-process timeout
3492 in case of a broken server. To avoid it, users can run nscd or put
3493 'options single-request' in /etc/resolv.conf.
3494 Implemented by Ulrich Drepper.
3498 * The following bugs are resolved with this release:
3500 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
3501 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
3502 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
3503 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
3504 6968, 6974, 6980, 6995, 7008, 7009, 7029
3506 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
3507 up at the same time. Implemented by Ulrich Drepper.
3509 * TLS descriptors for LD and GD on x86 and x86-64.
3510 Implemented by Alexandre Oliva.
3512 * getaddrinfo now handles DCCP and UDPlite.
3513 Implemented by Ulrich Drepper.
3515 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
3516 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
3517 Implemented by Ulrich Drepper.
3519 * New implementation of memmem, strstr, and strcasestr which is O(n).
3520 Implemented by Eric Blake.
3522 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
3524 * Implement "e" option for popen to open file descriptor with the
3525 close-on-exec flag set. Implemented by Ulrich Drepper.
3527 * Implement "b" mode for fmemopen. In this mode writes writes don't
3528 implicitly add a NUL byte and seeks from the end of the buffer really
3529 use the buffer end, not the string length as the basis.
3530 Implemented by Ulrich Drepper.
3532 * Many functions, exported and internal, now atomically set the close-on-exec
3533 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
3535 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
3537 Implemented by Pravin Satpute.
3539 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
3543 * The following bugs are resolved with this release:
3545 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
3546 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
3547 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
3548 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
3549 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
3550 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
3551 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
3553 * New locales: bo_CN, bo_IN, shs_CA.
3555 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
3557 * Sorting rules for some Indian languages (Devanagari and Gujarati).
3558 Implemented by Pravin Satpute.
3560 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
3562 * nscd caches now all timeouts for DNS entries
3563 Implemented by Ulrich Drepper.
3565 * nscd is more efficient and wakes up less often.
3566 Implemented by Ulrich Drepper.
3568 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
3569 vdprintf, and obstack_vprintf.
3570 Implemented by Jakub Jelinek.
3572 * Faster memset for x86-64.
3573 Implemented by Harsha Jagasia and H.J. Lu.
3575 * Faster memcpy on x86.
3576 Implemented by Ulrich Drepper.
3578 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
3579 Implemented by Ulrich Drepper.
3581 * Faster sqrt and sqrtf implemention for some PPC variants.
3582 Implemented by Steven Munroe.
3586 * The following bugs are resolved with this release:
3588 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
3589 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
3590 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
3591 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
3592 5071, 5103, 5104, 5112, 5113, 5184, 5186
3594 * More checking functions: fread, fread_unlocked, open*, mq_open.
3595 Implemented by Jakub Jelinek and Ulrich Drepper.
3597 * Extend fortification to C++. Implemented by Jakub Jelinek.
3599 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
3600 by not recognizing 'a' as a modifier when those specs are requested.
3601 Implemented by Jakub Jelinek.
3603 * PPC optimizations to math and string functions.
3604 Implemented by Steven Munroe.
3606 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
3607 options to be passed. Implemented by Ulrich Drepper.
3609 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
3611 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
3612 Implemented by Ulrich Drepper.
3614 * Handle private futexes in the NPTL implementation.
3615 Implemented by Jakub Jelinek and Ulrich Drepper.
3617 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
3618 Implemented by Roland McGrath and Ulrich Drepper.
3620 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
3622 * SHA-256 and SHA-512 based password encryption.
3623 Implemented by Ulrich Drepper.
3625 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
3626 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
3629 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
3630 Implemented by Ulrich Drepper.
3634 * The following bugs are resolved with this release:
3636 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
3637 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
3638 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
3639 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
3640 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
3641 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
3642 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
3645 * New Linux interfaces: epoll_pwait, sched_getcpu.
3647 * New generic interfaces: strerror_l.
3649 * nscd can now cache the services database. Implemented by Ulrich Drepper.
3653 * The following bugs are resolved with this release:
3655 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
3656 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
3657 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
3658 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
3659 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
3660 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
3661 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
3662 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
3663 3225, 3251, 3252, 3253, 3273
3665 * For Linux, the sorting of addresses returned by getaddrinfo now also
3666 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
3667 Implemented by Ulrich Drepper.
3669 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
3670 Implemented by Ulrich Drepper.
3672 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
3674 * New iconv module for MIK. Contributed by Alexander Shopov.
3676 * For sites with broken group and/or passwd database, the auto-propagate
3677 option of nscd can prevent creating ID lookup entries from the results
3678 of a name lookup and vice versa. This usually is no problem but some
3679 site might have problems with the default behavior.
3680 Implemented by Ulrich Drepper.
3682 * Iterating over entire database in NIS can be slow. With the
3683 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
3684 to trade time for memory. The entire database will be read at once.
3685 Implemented by Ulrich Drepper.
3687 * The interfaces introduced in RFC 3542 have been implemented by
3690 * Support for the new ELF hash table format was added by Ulrich Drepper.
3692 * Support for priority inheritance mutexes added by Jakub Jelinek and
3695 * Support for priority protected mutexes added by Jakub Jelinek.
3697 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
3698 or_IN, csb_PL, fy_NL, sr_ME.
3702 * More overflow detection functions.
3704 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
3705 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
3707 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
3708 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
3709 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
3710 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
3711 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
3712 by Masahide Washizawa.
3714 * It is now possible to install audit libraries for the dynamic linker using
3715 LD_AUDIT. Implemented by Ulrich Drepper.
3717 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
3718 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
3719 For a libc and libpthread that works well on Linux 2.4 kernels, we
3720 recommend using the stable 2.3 branch.
3722 * The new function open_wmemstream acts like open_memstream,
3723 but uses a wchar_t wide character buffer.
3725 * The new function ppoll is an improved version of poll, similar to pselect.
3727 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
3728 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
3729 renameat, unlinkat, linkat, symlinkat, readlinkat.
3731 * New Linux kernel system calls: unshare,
3732 inotify_init, inotify_add_watch, inotify_rm_watch.
3734 * The euidaccess function is now also known by the alias eaccess,
3735 for compatibility with some other systems.
3737 * Timezone data updated to 2006b version.
3741 * The following bugs are resolved with this release:
3743 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
3744 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
3745 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
3746 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
3747 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
3748 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
3750 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
3752 * As of this release, GCC 4 can be used to compile the C Library.
3754 * Timezone data updated to 2005m version.
3758 * The following bugs are resolved with this release:
3760 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
3761 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
3762 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
3763 777, 787, 821, 822, 823, 825
3765 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
3769 * Support for RFC 3678. Real implementations exist only for Linux so far.
3770 Implemented by Ulrich Drepper.
3772 * nscd can now cache entries persistently. Expiring entries are reloaded.
3773 For speedups the cache can be shared in memory with client processes.
3774 Implemented by Ulrich Drepper.
3776 * nscd can now perform SELinux checks.
3777 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
3779 * getaddrinfo queries are now cached. Canonical name lookup is performed
3781 Implemented by Ulrich Drepper.
3783 * The nothrow function attribute is used when headers are used by gcc when
3784 compiling C code. This can avoid significant amounts of exception
3787 * The malloc functions perform more error checking and are stricter when
3788 it comes to reacting on errors. The default action is to terminate
3789 the process after showing an error message. Implemented by Ulrich Drepper.
3791 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
3792 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
3794 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
3795 namespaces using the new function dlmopen(). This feature is of course,
3796 like most other dynamic loading functionality, not available in statically
3797 linked applications. Implemented by Ulrich Drepper.
3799 * Low-overhead boundary checking variants of string and some stdio functions
3800 were added. These are to be used in conjunction with a gcc patch by
3801 Jakub Jelinek which adds calls to these functions if possible.
3802 Implemented by Jakub Jelinek and Ulrich Drepper.
3804 * Old code for several operating systems and machine architectures that
3805 have not been in working condition in a long time have been removed from
3806 the main source tree maintained by the GNU C Library's maintainers.
3807 These files are now reside in the separate `ports' source module
3808 that is usable as an add-on when building the library.
3812 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
3813 interrogate the dynamic linker, compatible with the Solaris interface.
3815 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
3816 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
3818 * getifaddrs now uses the netlink interface on Linux to get its information.
3819 Implemented by Thorsten Kukuk.
3821 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
3822 Implemented by Ulrich Drepper.
3824 * support for non-executable stacks on x86 has been added. Changes mostly
3827 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
3830 * getaddrinfo now performs destination address selection according to
3835 * Thread-safe interfaces for many functions that access locale data
3836 were added in version 2.3, but these features were omitted from NEWS.
3837 Many functions have variants with an `_l' suffix that take a `locale_t'
3838 object as a parameter rather than consulting the current locale.
3839 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
3840 create and maintain `locale_t' objects. Additionally, the new function
3841 `uselocale' sets "the current locale" (as used by functions not so
3842 parameterized) set for an individual thread. These features were added
3843 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
3845 * The functions getresuid, getresgid, setresuid, and setresgid, which
3846 have long been available on Linux, are now declared in <unistd.h>
3847 and are now also available on the Hurd.
3849 * ELF thread-local storage support (TLS) now works on x86-64.
3851 * The new dynamic string token $LIB is expanded in shared library names.
3852 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
3854 * Aldy Hernandez contributed complete software floating point support for
3855 PowerPC machines with no FPU.
3857 * fexecve is implemented on Linux.
3859 * The `btowc' function should work at least twice as fast due to
3860 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
3862 * With approriate thread add-ons cancelable functions are now implemented
3863 in libc.so as well. No need to call the function in libpthread. This
3864 change allowed to finally disable the incorrect and expensive handling
3865 of weak definition in ld.so.
3867 * Yet more PLT entries in libc.so have been removed. We finally arrived
3868 at the bare minimum. Startup times improved appropriately.
3870 * Support for the new Linux/x86 system call interface was added. The
3871 AT_SYSINFO auxiliary vector entry is recognized and handled.
3875 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
3878 * iconv (the program and the interface) now accepts empty names (excluding
3879 options like //TRANSLIT) to mean "use charset of current locale".
3881 * localedef can now transliterate characters in strings which are not in
3882 the provided charmap. The information from the input locale is used.
3884 * Prelinking support was added for ELF targets. This requires additional
3885 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
3887 * Read-only stdio streams now use mmap to speed up operation by eliminating
3888 copying and buffer underflows. To use add 'm' to the mode string of
3889 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
3891 * The malloc functions were completely rewritten by Wolfram Gloger based
3892 on Doug Lea's malloc-2.7.0.c.
3894 * Isamu Hasegawa contributed a completely new and POSIX-conformant
3895 implementation of regex.
3897 * Bruno Haible upgraded the iconv and locale implementation to support
3900 * Contents of the LC_* and LANG environment variables in the CEN style are
3901 not recognized anymore. It never was used. Change by Ulrich Drepper.
3903 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
3904 thread-local storage (TLS) ABI on some platforms.
3905 Changes by Ulrich Drepper. SH support by Kaz Kojima.
3907 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
3908 EUC-JISX0213, and TSCII.
3910 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
3911 BSD-compatible interface for getting all network interface addresses.
3912 Implementation for IPv4 by Roland McGrath.
3914 * Loading of locale data is faster due to the introduction of a locale
3915 archive. Implemented by Roland McGrath and Ulrich Drepper.
3917 * Startup times are significantly reduced by not using exported functions
3918 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
3921 * Steven Munroe contributed a port to PowerPC64/Linux.
3925 * The Hurd now uses the GNU libio implementation of stdio rather than the
3926 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
3928 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
3929 with the same behavior as the Linux system call of the same name.
3933 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
3934 128-bit long double format.
3936 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
3937 IBM1161, and IBM1162 charsets.
3939 * Andreas Jaeger contributed a port to x86-64/Linux.
3941 * Peter Bruin contributed a port to PowerPC/Hurd.
3943 * libc functions using I/O streams now can handle wide-oriented streams
3946 * optimizations in the dynamic linker. Binaries created by recent binutils
3947 versions start up quicker due to reduced time spent on relocations.
3949 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
3953 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
3954 asinh, atanh, j0 for the 128-bit long double format.
3956 * Bruno Haible updated all the code handling Unicode in some form to
3957 support Unicode 3.1.
3959 * Speed of regex for single-byte locales is back to previous levels.
3960 Patch by Isamu Hasegawa.
3962 * Alpha, SPARC, and IA-64 now also using floating stacks.
3964 * Startup time of internationalized applications greatly improved through
3965 iconv cache. Use iconvconfig to generate the cache file.
3966 Contributed by Ulrich Drepper.
3968 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
3969 severe performance problems. Patch by David Mosberger.
3971 * The Hurd port got a lot more functionality like AIO, various stdio
3972 extensions, etc. Mainly done by Roland McGrath.
3974 * mtrace can now lookup symbols in shared libraries.
3978 * Intel's IA-64 math library is largely integrated. It provides fast and
3979 accurate implementatations for most basic and standard math functions
3980 in float, double, and long double format.
3982 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
3983 and asin for the 96-bit long double format and asin, log, tan for the
3984 128-bit long double format.
3986 * The beginning of a last-bit accurate math library by IBM Haifa were added.
3987 The basic double functions exist today. Contributed by Abraham Ziv
3988 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
3989 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
3991 * An asynchronous name lookup library was added. The interface is designed
3992 after POSIX AIO. The proposal was circulated beforehand to get comments.
3993 No negative ones came in. Implemented by Ulrich Drepper.
3995 * Port to S390/64bit contributed by Martin Schwidefsky
3996 <schwidefsky@de.ibm.com>.
3998 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
3999 of functions for Linux/IA-64.
4001 * The RPC code is now thread safe. Threads can now use the same service
4002 of different services at the same time. Patch by Eric Norum
4003 <eric.norum@usask.ca> with some help by Ulrich Drepper.
4005 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
4006 family of functions for Linux/S390.
4008 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
4009 of functions for Linux/x86.
4011 * Port to Linux/CRIS contributed by Axis Communications.
4015 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
4016 we can now check for namespace violations and missing declarations. The
4017 result is that almost all headers are now Unix-compliant (as defined in
4018 the upcoming XPG6). The negative side is that some programs might need
4019 corrections, too, if they depend on the incorrect form of the headers in
4020 previous versions which defined too many symbols and included too many
4023 * regex now handles multibyte character sets correctly.
4024 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
4026 * iconv (the program) does now conform to the upcoming XPG6 and handles
4027 charmaps. Instead of the charset names the path of charmaps can be
4028 provided and the conversion happens based on this data.
4029 Contributed by Ulrich Drepper.
4031 * The locale program now provides detailed information about the installed
4036 only lists the names of the supported locales
4040 provides details such as country, language, and codeset name.
4041 Contributed by Ulrich Drepper.
4045 * The gencat program now parses the input file according to the charset
4046 selected by the LC_CTYPE category. This is important for stateful
4047 character sets. To make generating catalogs easier there is a way
4048 to overwrite the charset selected by the locale: before the first
4049 message or $ quote line the catalog can contain a line like
4051 $ codeset=ISO-8859-2
4053 to select the charset (ISO-8859-2 in this case).
4055 Implemented by Shinya Hanataka and Ulrich Drepper.
4057 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
4058 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
4059 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
4061 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
4062 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
4064 * The LANGUAGE environment variable is now ignored unless the locale is
4065 changed from the default "C" locale.
4067 * The usual bug fixes.
4071 * Greg McGary added runtime support for bounds checking using gcc's
4072 new -fbounded-pointers option. ix86 target is complete. PowerPC
4075 * Thorsten Kukuk added secure mode support to nscd.
4077 * The Berkeley db libraries have been removed.
4079 Related, the nss_db module is now in a separate package since it
4080 obviously requires a database library being available.
4082 * Wide character I/O streams implemented by Ulrich Drepper.
4084 * Functions from the extended socket API added by Ulrich Drepper.
4086 * Functions feenableexcept and fedisableexcept to control the
4087 behaviour of individual exceptions have been added by Andreas Jaeger.
4089 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
4091 * The resolver code has been updated from bind 8.2.3-T5B which supports
4092 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
4095 This change could in some situations effect backward compatibility. Since
4096 now `_res' is a thread-local instead of a global variable, modifying it
4097 in one thread does not have any effect in other threads.
4099 The resolver library was also extended to allow IPv6 as the transport
4100 protocol for the requests. This work was done by Stig Venaas.
4102 * Compatibility code for K&R C compilers has been removed from the
4103 header files. A ISO C compiler is needed to use the library
4104 (conforming to either C89 or C99 standard).
4106 * Complete rewrite of the localedef program to support multibyte character
4107 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
4108 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
4109 Implemented by Ulrich Drepper.
4111 Bruno Haible significantly improved the generation and use of the data
4112 structures for the wide character tables.
4114 * Plural handling in gettext implemented by Ulrich Drepper.
4116 * The utmp daemon has been removed.
4118 * The port to MIPS-Linux has been finished by Andreas Jaeger.
4120 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
4123 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
4125 * POSIX barriers implemented by Kaz Kylheku.
4127 * POSIX spawn function family implemented by Ulrich Drepper.
4129 * POSIX spinlocks are now available.
4131 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
4133 * the configure option --enable-kernel=X.Y.Z allows to strip out
4134 compatibility for kernel versions before X.Y.Z. This is currently only
4135 implemented for Linux.
4137 * the sockaddr_in6 structure changed. The IPv6 working group added a new
4138 field sin6_scope_id. This means that all programs using IPv6 should be
4139 recompiled. Don't expect binary compatibility with previous glibc
4142 * various conversion modules for IBM character sets contributed by
4145 * IA-64 port by Jes Sorensen and HJ Lu.
4159 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
4161 * New xdr functions are added; some rpc functions are now 64bit clean.
4163 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
4165 * Fixed known incompatibilities with glibc 2.0.
4167 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
4169 * Optimized a number of functions (especially the ELF dynamic loader).
4171 * Update timezone data files.
4173 * lots of charmaps corrections
4175 * some new locale definitions and charmaps
4180 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
4181 conform to POSIX member type requirements. Symbol versions have been
4182 adjusted as needed within the library, and for direct use by applications,
4183 but there is potential for problems if third-party libraries use
4184 struct timeval as part of their interface. This does not present
4185 a problem for X and other "essential" system libraries.
4187 * An additional locale model to support C++ Standard Library locale
4188 model and probably more was implemented by Ulrich Drepper.
4190 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
4193 * Miles Bader provided the `argp' function family to support hierachical
4194 command line argument parsing, layered on top of getopt.
4196 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
4198 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
4201 * scanf recognizes the %a and %A format for scanning floating point numbers.
4203 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
4204 information and interfaces for the available integer types.
4206 * about 130 new math functions were added to implement the ISO C9x math
4209 * the new header <complex.h> contains definitions of the complex math
4210 functions from ISO C 9X.
4212 * the new header <tgmath.h> defines generic macros to use complex or
4213 real valued functions.
4215 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
4217 * Andreas Jaeger provided a test suite for the math library.
4219 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
4221 * Ulrich Drepper added character set conversion functions (iconv).
4223 * Optimized string functions have been added.
4225 * The localedata addon is now part of glibc.
4227 * An implementation of profiling shared libraries was added by Ulrich Drepper.
4229 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
4230 daemon for NSS (nscd).
4232 Missing a better place here are some numbers on improvements. Under
4233 Linux 2.1.125 un-tar-ing the kernel sources takes
4237 using local files 12.19s 6.88s 22.91s
4239 using NIS 13.92s 8.91s 26.34s
4241 using NIS & nscd 10.37s 7.34s 25.30s
4243 using NIS+ 27.57s 30.37s 640.46s
4245 using NIS+ & nscd 10.25s 7.83s 26.51s
4247 using NIS & old nscd [1] 13.83s 8.32s 29.60s
4249 Keep in mind that non-namelookup related operations dominate above times.
4250 It was just a common complain that using NIS+ unpacking the kernel is
4253 [1] The old nscd implementation is not available anymore since it was
4254 distributed with glibc up to version 2.0.98 and thus is now replaced.
4256 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
4258 * Mark Kettenis provided a Hesiod NSS module.
4260 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
4261 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
4263 * rcmd can now handle netgroups (Dick Streefland).
4265 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
4268 * Support for the IPv6 protocol has been added to the socket API, as per the
4269 latest draft standards.
4271 * Support for Linux 2.2 has been added.
4273 * Interface changes relative to the latest 2.0.x release:
4274 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
4275 addseverity NEW: Unix98
4276 alphasort64 NEW: LFS
4277 argp_err_exit_status NEW: argp, GNU ext
4278 argp_error NEW: argp, GNU ext
4279 argp_failure NEW: argp, GNU ext
4280 argp_help NEW: argp, GNU ext
4281 argp_parse NEW: argp, GNU ext
4282 argp_program_bug_address NEW: argp, GNU ext
4283 argp_program_version NEW: argp, GNU ext
4284 argp_program_version_hook NEW: argp, GNU ext
4285 argp_state_help NEW: argp, GNU ext
4286 argp_usage NEW: argp, GNU ext
4287 authdes_create NEW: Secure RPC
4288 authdes_getucred NEW: Secure RPC
4289 authdes_pk_create NEW: Secure RPC
4290 backtrace NEW: GNU ext.
4291 backtrace_symbols NEW: GNU ext.
4292 backtrace_symbols_fd NEW: GNU ext.
4294 cacosf NEW: ISO C 9x
4295 cacosh NEW: ISO C 9x
4296 cacoshf NEW: ISO C 9x
4297 cacoshl NEW: ISO C 9x
4298 cacosl NEW: ISO C 9x
4305 casinf NEW: ISO C 9x
4306 casinh NEW: ISO C 9x
4307 casinhf NEW: ISO C 9x
4308 casinhl NEW: ISO C 9x
4309 casinl NEW: ISO C 9x
4311 catanf NEW: ISO C 9x
4312 catanh NEW: ISO C 9x
4313 catanhf NEW: ISO C 9x
4314 catanhl NEW: ISO C 9x
4315 catanl NEW: ISO C 9x
4316 cbc_crypt NEW: Secure RPC
4320 ccoshf NEW: ISO C 9x
4321 ccoshl NEW: ISO C 9x
4327 cimagf NEW: ISO C 9x
4328 cimagl NEW: ISO C 9x
4329 clearerr_locked REMOVED
4330 clntunix_create NEW: sunrpc ext
4332 clog10 NEW: ISO C 9x
4333 clog10f NEW: ISO C 9x
4334 clog10l NEW: ISO C 9x
4344 cprojf NEW: ISO C 9x
4345 cprojl NEW: ISO C 9x
4347 crealf NEW: ISO C 9x
4348 creall NEW: ISO C 9x
4353 csinhf NEW: ISO C 9x
4354 csinhl NEW: ISO C 9x
4357 csqrtf NEW: ISO C 9x
4358 csqrtl NEW: ISO C 9x
4362 ctanhf NEW: ISO C 9x
4363 ctanhl NEW: ISO C 9x
4365 des_setparity NEW: Secure RPC
4366 ecb_crypt NEW: Secure RPC
4367 endutxent NEW: Unix98
4369 exp10f NEW: ISO C 9x
4370 exp10l NEW: ISO C 9x
4374 fattach NEW: STREAMS
4375 fdetach NEW: STREAMS
4379 feclearexcept NEW: ISO C 9x
4380 fegetenv NEW: ISO C 9x
4381 fegetexceptflag NEW: ISO C 9x
4382 fegetround NEW: ISO C 9x
4383 feholdexcept NEW: ISO C 9x
4385 feraiseexcept NEW: ISO C 9x
4386 ferror_locked REMOVED
4387 fesetenv NEW: ISO C 9x
4388 fesetexceptflag NEW: ISO C 9x
4389 fesetround NEW: ISO C 9x
4390 fetestexcept NEW: ISO C 9x
4391 feupdateenv NEW: ISO C 9x
4392 fflush_locked REMOVED
4396 fgets_unlocked NEW: GNU ext.
4397 fileno_locked REMOVED
4409 fputc_locked REMOVED
4410 fputs_unlocked NEW: GNU ext.
4411 fread_unlocked NEW: GNU ext.
4416 fstatvfs NEW: Unix98
4420 ftruncate64 NEW: LFS
4422 fwrite_unlocked NEW: GNU ext.
4423 gai_strerror NEW: IPv6
4427 getchar_locked REMOVED
4429 getdate_err NEW: Unix98
4430 getdate_r NEW: GNU ext.
4432 getnameinfo NEW: IPv6
4433 getnetname NEW: Secure RPC
4434 getpmsg NEW: STREAMS
4435 getpt NEW: Unix98 PTY
4436 getrlimit64 NEW: LFS
4437 getutxent NEW: Unix98
4438 getutxid NEW: Unix98
4439 getutxline NEW: Unix98
4440 glob64 NEW: GNU ext.
4441 globfree64 NEW: GNU ext.
4442 gnu_get_libc_release NEW: GNU ext.
4443 gnu_get_libc_version NEW: GNU ext.
4444 grantpt NEW: Unix98 PTY
4445 host2netname NEW: Secure RPC
4447 iconv_close NEW: iconv
4448 iconv_open NEW: iconv
4449 if_freenameindex NEW: IPv6
4450 if_indextoname NEW: IPv6
4451 if_nameindex NEW: IPv6
4452 if_nametoindex NEW: IPv6
4453 in6addr_any NEW: IPv6
4454 in6addr_loopback NEW: IPv6
4455 inet6_isipv4mapped NEW: IPv6
4456 isastream NEW: STREAMS
4457 iswblank NEW: GNU ext.
4458 key_decryptsession NEW: Secure RPC
4459 key_decryptsession_pk NEW: Secure RPC
4460 key_encryptsession NEW: Secure RPC
4461 key_encryptsession_pk NEW: Secure RPC
4462 key_gendes NEW: Secure RPC
4463 key_get_conv NEW: Secure RPC
4464 key_secretkey_is_set NEW: Secure RPC
4465 key_setnet NEW: Secure RPC
4466 key_setsecret NEW: Secure RPC
4467 llrint NEW: ISO C 9x
4468 llrintf NEW: ISO C 9x
4469 llrintl NEW: ISO C 9x
4470 llround NEW: ISO C 9x
4471 llroundf NEW: ISO C 9x
4472 llroundl NEW: ISO C 9x
4477 lrintf NEW: ISO C 9x
4478 lrintl NEW: ISO C 9x
4479 lround NEW: ISO C 9x
4480 lroundf NEW: ISO C 9x
4481 lroundl NEW: ISO C 9x
4483 makecontext NEW: Unix98
4484 mempcpy NEW: GNU ext.
4487 modify_ldt NEW: kernel
4491 nearbyint NEW: ISO C 9x
4492 nearbyintf NEW: ISO C 9x
4493 nearbyintl NEW: ISO C 9x
4494 netname2host NEW: Secure RPC
4495 netname2user NEW: Secure RPC
4496 nexttoward NEW: ISO C 9x
4497 nexttowardf NEW: ISO C 9x
4498 nexttowardl NEW: ISO C 9x
4502 passwd2des NEW: Secure RPC
4504 pow10f NEW: GNU ext.
4505 pow10l NEW: GNU ext.
4508 printf_size NEW: GNU ext.
4509 printf_size_info NEW: GNU ext.
4510 profil_counter REMOVED
4511 pthread_mutexattr_getkind_np REPLACED
4512 pthread_mutexattr_setkind_np REPLACED
4513 ptsname NEW: Unix98 PTY
4514 ptsname_r NEW: Unix98 PTY
4516 putchar_locked REMOVED
4517 putgrent NEW: GNU ext.
4519 putpmsg NEW: STREAMS
4520 pututxline NEW: Unix98
4524 readdir64_r NEW: LFS
4525 remquo NEW: ISO C 9x
4526 remquof NEW: ISO C 9x
4527 remquol NEW: ISO C 9x
4529 roundf NEW: ISO C 9x
4530 roundl NEW: ISO C 9x
4532 scalbln NEW: ISO C 9x
4533 scalblnf NEW: ISO C 9x
4534 scalblnl NEW: ISO C 9x
4536 sendfile NEW: kernel
4537 setcontext NEW: Unix98
4538 setrlimit64 NEW: LFS
4539 setutxent NEW: Unix98
4541 sigignore NEW: Unix98
4542 sigqueue NEW: POSIX.1b
4543 sigrelse NEW: Unix98
4544 sigset NEW: POSIX.1b
4545 sigtimedwait NEW: POSIX.1b
4546 sigwaitinfo NEW: POSIX.1b
4547 sincos NEW: GNU ext.
4548 sincosf NEW: GNU ext.
4549 sincosl NEW: GNU ext.
4553 strcasestr NEW: GNU ext.
4554 strtoimax NEW: ISO C 9x
4555 strtoumax NEW: ISO C 9x
4556 strverscmp NEW: GNU ext.
4557 svcauthdes_stats NEW: Secure RPC
4558 svcunix_create NEW: sunrpc etx
4559 svcunixfd_create NEW: sunrpc ext
4560 swapcontext NEW: Unix98
4561 tcgetsid NEW: Unix98 PTY
4562 tdestroy NEW: GNU ext.
4563 tgamma NEW: ISO C 9x
4564 tgammaf NEW: ISO C 9x
4565 tgammal NEW: ISO C 9x
4569 truncf NEW: ISO C 9x
4570 truncl NEW: ISO C 9x
4572 unlockpt NEW: Unix98 PTY
4573 updwtmpx NEW: Unix98
4574 user2netname NEW: Secure RPC
4575 utmpxname NEW: Unix98
4576 versionsort NEW: GNU ext.
4577 versionsort64 NEW: GNU ext.
4579 wcscasecmp NEW: GNU ext.
4580 wcsncasecmp NEW: GNU ext.
4581 wcsnlen NEW: GNU ext.
4582 wcstoimax NEW: ISO C 9x
4583 wcstoll NEW: ISO C 9x
4584 wcstoull NEW: ISO C 9x
4585 wcstoumax NEW: ISO C 9x
4587 wordexp NEW: POSIX.2
4588 wordfree NEW: POSIX.2
4589 write_profiling REMOVED
4590 xdecrypt NEW: Secure RPC
4591 xdr_authdes_cred NEW: Secure RPC
4592 xdr_authdes_verf NEW: Secure RPC
4593 xdr_cryptkeyarg NEW: Secure RPC
4594 xdr_cryptkeyarg2 NEW: Secure RPC
4595 xdr_cryptkeyres NEW: Secure RPC
4596 xdr_getcredres NEW: Secure RPC
4597 xdr_key_netstarg NEW: Secure RPC
4598 xdr_key_netstres NEW: Secure RPC
4599 xdr_keybuf NEW: Secure RPC
4600 xdr_keystatus NEW: Secure RPC
4601 xdr_netnamestr NEW: Secure RPC
4602 xdr_sizeof NEW: Secure RPC
4603 xdr_unixcred NEW: sunrpc ext
4604 xencrypt NEW: Secure RPC
4605 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
4616 * inet_ntoa is thread-safe
4618 * updwtmp is moved from libutil to libc
4620 * rewrite of cbrt function
4622 * update of timezone data
4636 * add atoll function
4638 * fix complex problems in Berkeley DB code
4640 * fix math functions
4644 * fixed lots of header problems (especially Linux/GNU specific)
4646 * dynamic loader preserves all registers
4648 * Roland McGrath provided support for handling of auxiliary objects in
4649 the ELF dynamic loader.
4651 * support for parallel builds is improved
4655 * GNU extensions are no longer declared by default. To enable them you
4656 must define the macro `_GNU_SOURCE' in your program or compile with
4659 * The library has changed from using GNU ld symbol aliases to using weak
4660 symbols where available. The ELF object file format supports weak
4661 symbols; GNU ld also supports weak symbols in the a.out format. (There
4662 is also now support for other GNU ld extensions in ELF. Use the
4663 `--with-elf' option to configure to indicate you have ELF, and
4664 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
4665 of many files which contained only symbol aliases, reducing the size of
4666 the source and the compiled library; many other files were renamed to
4667 less cryptic names previously occupied by the symbol alias files.
4668 There is a new header file <elf.h> for programs which operate on
4669 files in the ELF format.
4671 * Converted to Autoconf version 2, so `configure' has more options.
4672 Run `configure --help' to see the details.
4674 * The library can now be configured to build profiling, highly-optimized
4675 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
4676 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
4677 `configure' enable building these extra libraries. The shared library is
4678 built by default when using both ELF and GNU ld. When shared libraries
4679 are enabled, the new library `-ldl' is available for arbitrary run-time
4680 loading of shared objects; its interface is defined in <dlfcn.h>. The
4681 new header file <link.h> gives access to the internals of the run-time
4682 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
4683 application of same name on other systems and it provides information
4684 about dynamically linked binaries.
4686 * The C library now provides the run-time support code for profiling
4687 executables compiled with `-pg'. Programs can control the profiling code
4688 through the interface in <sys/gmon.h>. The `gmon.out' files written by
4689 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
4690 the support for this file format was contributed by David Mosberger-Tang.
4692 * The math code has been replaced with a math library based on fdlibm from
4693 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
4694 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
4695 functions. The math functions now reside in a separate library, so
4696 programs using them will need to use `-lm' their linking commands.
4698 * John C. Bowman contributed optimized ix87 assembler inline functions.
4700 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
4701 mechanism similar to that found in Solaris 2. This is now used for the
4702 group, passwd, hosts, networks, services, protocols, rpc, ethers,
4703 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
4704 file controls what services are used for each individual database. This
4705 works by loading shared libraries with names specified in `nsswitch.conf',
4706 so service modules can be changed or added at any time without even
4707 relinking any program. Currently there are the file, db, and NIS based
4708 NSS services available.
4710 * The new functions `strtoq' and `strtouq' parse integer values from
4711 strings, like `strtol' and `strtoul', but they return `long long int' and
4712 `unsigned long long int' values, respectively (64-bit quantities).
4714 * The new functions `strtof' and `strtold' parse floating-point values from
4715 strings, like `strtod', but they return `float' and `long double' values,
4716 respectively (on some machines `double' and `long double' are the same).
4718 * Ulrich Drepper has contributed new implementations of the floating-point
4719 printing and reading code used in the `printf' family of functions and
4720 `strtod', `strtof', and `strtold'. These new functions are perfectly
4721 accurate, and much faster than the old ones.
4723 * The implementation of the POSIX locale model was completely rewritten by
4724 Ulrich Drepper. This includes the new programs `localedef' and `locale'
4725 to compile the POSIX locale definition.
4727 * The former dummy implementations of the strcoll and strxfrm function are
4728 now replaced by fully functional code contributed by Ulrich Drepper. The
4729 collation information comes from the POSIX locale definitions.
4731 * The new header <langinfo.h> defines an interface for accessing
4732 various locale-dependent data (using the locale chosen with `setlocale').
4734 * Ulrich Drepper has contributed a new suite of functions for operation on
4735 wide-character and multibyte-character strings, in <wchar.h>;
4736 and classification and case conversion of wide characters, in <wctype.h>.
4737 These new functions are conforming to the ISO C, Amendement 1 specification.
4739 * There is now a second implementation of the standard I/O library available.
4740 It comes from GNU libg++ as was written by Per Bothner, heavily modified
4741 by Hongjiu Lu and made thread safe by Ulrich Drepper.
4743 * You can now use positional parameter specifications in format strings
4744 for the `printf' and `scanf' families of functions. For example,
4745 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
4746 ``Number 6, Mr Jones''. This is mainly useful when providing different
4747 format strings for different languages, whose grammars may dictate
4748 different orderings of the values being printed. To support this
4749 feature, the interface for `register_printf_handler' has changed; see
4750 the header file <printf.h> for details.
4752 * The `printf' and `scanf' families of functions now understand a new
4753 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
4754 to group numbers as indicated by the locale; for `scanf' and friends, this
4755 says to accept as valid only a number with all the proper grouping
4756 separators in the right places. In the default "C" locale, numbers are
4757 not grouped; but locales for specific countries will define the usual
4758 conventions (i.e. separate thousands with `,' in the US locale).
4760 * The pgrp functions have been regularized, slightly incompatibly but much
4761 less confusingly. The core functions are now `getpgid' and `setpgid',
4762 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
4763 argument) and BSD `setpgrp' (identical to `setpgid') functions are
4764 provided for compatibility. There is no longer an incompatible `getpgrp'
4765 with an argument declared under _BSD_SOURCE; no BSD code uses it.
4767 * The new header file <fts.h> and suite of functions simplify programs that
4768 operate on directory trees. This code comes from 4.4 BSD.
4770 * The resolver code has been updated from the BIND 4.9.5-P1 release.
4771 Parts of the code were heavily modified by Ulrich Drepper to fit in the
4772 NSS scheme used in glibc.
4774 * There is a new malloc debugging hook `__memalign_hook'.
4776 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
4777 `unsigned int' in <sys/types.h>. These are for compatibility only and
4778 their use is discouraged.
4780 * The `-lmcheck' library to enable standard malloc debugging hooks is now
4781 done differently, so that it works even without GNU ld.
4783 * New function `euidaccess' checks allowed access to a file like `access',
4784 but using the effective IDs instead of the real IDs.
4786 * The time zone data files have been updated for the latest and greatest
4787 local time conventions of the countries of the world.
4789 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
4792 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
4793 for formatting floating-point numbers. They are provided only for
4794 compatibility; new programs should use `sprintf' instead. There are
4795 also equivalent function for the `long double' floating-point type and
4796 all functions also exist in a reentrant form.
4798 * The new auxiliary library `-lutil' from 4.4 BSD contains various
4799 functions for maintaining the login-record files (primarily of use to
4800 system programs such as `login'), and convenient functions for
4801 allocating and initializing a pseudo-terminal (pty) device.
4803 * Ulrich Drepper has contributed new support for System V style
4804 shared memory and IPC on systems that support it.
4806 * Ulrich Drepper has contributed several miscellaneous new functions found
4807 in System V: The `hsearch' family of functions provide an effective
4808 implementation of hash tables; `a64l' and `l64a' provide a very simple
4809 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
4812 * Ulrich Drepper has contributed new reentrant counterparts for the
4813 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
4815 * Ulrich Drepper has contributed new, highly-optimized versions of several
4816 string functions for the i486/Pentium family of processors.
4818 * Ulrich Drepper has updated the Linux-specific code, based largely
4819 on work done in Hongjiu Lu's version of GNU libc for Linux.
4820 The GNU library now supports Linux versions 2.0.10 and later,
4821 using the ELF object file format (i[3456]86-*-linux).
4823 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
4825 * David Mosberger-Tang and Richard Henderson have ported the C library
4826 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
4827 dynamic linking support for ELF/Alpha.
4829 * Richard Henderson contributed several Alpha optimized assembler function
4830 for arithmetic and string handling.
4832 * Ulrich Drepper has contributed a new set of message catalog functions to
4833 support multiple languages using the <libintl.h> interface, for use with
4834 his new package GNU gettext. Translation volunteers have contributed
4835 catalogs of the library's messages in Spanish, German, and Korean.
4837 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
4838 program and the `catgets' function for reading the catalog files it
4839 creates. (The <libintl.h> interface is preferred; we include the
4840 <nl_types.h> interface using `catgets' only for source compatibility with
4841 programs already written to use it.)
4843 * New header file <values.h> gives SVID-compatible names for <limits.h>
4846 * Various new macros, declarations, and small header files for compatibility
4849 * New function `group_member' is a convenient way to check if a process has
4850 a given effective group ID.
4852 * When using GCC 2.7 and later, the socket functions are now declared in a
4853 special way so that passing an argument of type `struct sockaddr_in *',
4854 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
4855 `struct sockaddr *' type, does not generate a type-clash warning.
4857 * New function `error' declared in header file <error.h> is a convenient
4858 function for printing error messages and optionally exiting; this is the
4859 canonical function used in GNU programs. The new functions `err', `warn',
4860 and friends in header file <err.h> are the canonical 4.4 BSD interface for
4861 doing the same thing.
4863 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
4864 POSIX.2 `glob' function to do ~ and {...} expansion.
4866 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
4867 `clearenv' which is used in POSIX.9 is also available.
4869 * New function `getsid' returns session ID number on systems that support it.
4871 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
4872 files <db.h> and <mpool.h> provide a rich set of functions for several
4873 types of simple databases stored in memory and in files, and <ndbm.h> is
4874 an old `ndbm'-compatible interface using the `db' functions. Link with
4875 `-ldb' to get these functions.
4877 * New macro `strdupa' copies a string like `strdup', but uses local stack
4878 space from `alloca' instead of dynamic heap space from `malloc'.
4880 * New function `strnlen' is like `strlen' but searches only a given maximum
4881 number of characters for the null terminator. `stpncpy', `strndup' and
4882 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
4885 * New function `statfs' in header <sys/statfs.h>.
4887 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
4888 provide convenient functions for operating on blocks of null-terminated
4891 * A new suite of functions in <utmp.h> handle all the details of reading
4892 and writing the utmp file.
4894 * An implementation of the NIS/YP(tm) based NSS service was contributed by
4897 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
4898 completely POSIX compliant and also implemented the extended functionality
4899 to handle alternate digit representation and alternate era date formats.
4901 * Ulrich Drepper provided an implementation of the `strptime' function
4902 defined in XPG4.2 which transforms a string into a `struct tm' value.
4904 * Paul Eggert provided the tzselect shell script as part of the timezone
4905 code. The shell script makes it easy to select the correct timezone
4908 * The implementation of the malloc family of functions is completely replaced
4909 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
4910 The implementation uses the mmap function (if available) and it is
4911 optimized for the use in multi threaded programs.
4913 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
4914 functions. This new functionality is usable by specifying a special
4915 salt string and it is compatible with implementation on *BSD systems.
4917 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
4918 `getsubopt' to handle second level command line options, `bsd_signal'
4919 to access BSD style `signal' functionality, the obsolete `regexp' style
4922 * the `lchown' function is available on system which support this
4925 * The implementation of the shadow password handling function was contributed
4928 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
4930 * POSIX.1g support was added. The <sys/select.h> header is available,
4931 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
4932 implementation of `getaddrinfo'.
4936 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
4938 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
4939 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
4941 * The new function `daemon' from 4.4 BSD is useful for server programs that
4942 want to put themselves in the background.
4944 * Joel Sherrill has contributed support for several standalone boards that
4945 run without an operating system.
4947 * `printf', `scanf' and friends now accept a `q' type modifier for long
4948 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
4950 * All of the code taken from BSD (notably most of the math and networking
4951 routines) has been updated from the BSD 4.4-Lite release.
4953 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
4955 * The new functions `getdomainname' and `setdomainname' fetch or change the
4956 YP/NIS domain name. These are system calls which exist on systems which
4959 * The time zone data files have been updated for the latest international
4962 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
4963 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
4967 * The C library now includes support for Sun RPC, from Sun's free
4968 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
4969 are included. (There is still no support for YP.)
4971 * Tom Quinn has contributed a port of the C library to SGI machines running
4972 Irix 4 (mips-sgi-irix4).
4974 * The new `lockf' function is a simplified interface to the locking
4975 facilities of `fcntl', included for compatibility.
4977 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
4979 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
4981 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
4984 * The error message printed by `assert' for a failed assertion now includes
4985 the name of the program (if using GNU ld) and the name of the calling
4986 function (with versions of GCC that support this).
4988 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
4990 * The library now includes the <sys/mman.h> header file and memory
4991 management functions `mmap', `munmap', `mprotect', `msync', and
4992 `madvise', on systems that support those facilities.
4994 * The interface for `mcheck' has changed slightly: the function called to
4995 abort the program when an allocation inconsistency is detected now takes
4996 an argument that indicates the type of failure. The new function
4997 `mprobe' lets you request a consistency check for a particular block at
4998 any time (checks are normally done only when you call `free' or `realloc'
5001 * It is now possible to easily cross-compile the C library, building on one
5002 system a library to run on another machine and/or operating system. All
5003 you need to do is set the variable `HOST_CC' in `configparms' to the
5004 native compiler for programs to run on the machine you are building on (a
5005 few generator programs are used on Unix systems); set `CC' to the
5008 * The new function `fexecve' (only implemented on the GNU system) executes
5009 a program file given a file descriptor already open on the file.
5013 * Brendan Kehoe has contributed most of a port to the DEC Alpha
5014 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
5016 * You can set the variable `libprefix' in `configparms' to specify a prefix
5017 to be prepended to installed library files; this makes it easy to install
5018 the GNU C library to be linked as `-lgnuc' or whatever.
5020 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
5021 copies a limited number of characters from a string, and returns the
5022 address of the last character written.
5024 * You no longer need to check for whether the installed `stddef.h' is
5025 compatible with the GNU C library. configure now checks for you.
5027 * You can now define a per-stream `fileno' function to convert the
5028 stream's cookie into an integral file descriptor.
5030 * ``malloc (0)'' no longer returns a null pointer. Instead, it
5031 allocates zero bytes of storage, and returns a unique pointer which
5032 you can pass to `realloc' or `free'. The behavior is undefined if
5033 you dereference this pointer.
5035 * The C library now runs on Sony NEWS m68k machines running either
5036 NewsOS 3 or NewsOS 4.
5038 * The new `syscall' function is a system-dependent primitive function
5039 for invoking system calls. It has the canonical behavior on Unix
5040 systems, including unreliable return values for some calls (such as
5041 `pipe', `fork' and `getppid').
5043 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
5044 to `EAGAIN', which is the preferred name. On systems whose kernels
5045 use two distinct codes, the C library now translates EWOULDBLOCK to
5046 EAGAIN in every system call function.
5050 * The GNU C Library Reference Manual is now distributed with the library.
5051 `make dvi' will produce a DVI file of the printed manual.
5052 `make info' will produce Info files that you can read on line using C-h i
5053 in Emacs or the `info' program.
5054 Please send comments on the manual to bug-glibc-manual@gnu.org.
5056 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
5058 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
5060 * Jason Merrill has contributed a port to the Sequent Symmetry running
5061 Dynix version 3 (i386-sequent-dynix).
5063 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
5064 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
5066 * New function `memory_warnings' lets you arrange to get warnings when
5067 malloc is running out of memory to allocate, like Emacs gives you.
5069 * The C library now contains the relocating allocator used in Emacs 19 for
5070 its editing buffers. This allocator (ralloc) minimizes allocation
5071 overhead and fragmentation by moving allocated regions around whenever it
5072 needs to. You always refer to a ralloc'd region with a "handle" (a
5073 pointer to a pointer--an object of type `void **').
5075 * There is a new `printf' format: `%m' gives you the string corresponding
5076 to the error code in `errno'.
5078 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
5079 or `%[' conversion, but instead of filling in a fixed-sized buffer you
5080 pass, the `a' modifier says to fill in a `char **' you pass with a
5083 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
5084 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
5085 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
5087 * `mkstemp' is a traditional Unix function to atomically create and open a
5088 uniquely-named temporary file.
5092 * The standard location for the file that says what the local timezone is
5093 has changed again. It is now `/usr/local/etc/localtime' (or more
5094 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
5096 * The distribution no longer contains any files with names longer than 14
5099 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
5100 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
5102 * New functions `ttyslot' and `syslog' from 4.4 BSD.
5106 * The configuration process has changed quite a bit. The `configure'
5107 script is now used just like the configuration scripts for other GNU
5108 packages. The `sysdeps' directory hierarchy is much rearranged.
5109 The file `INSTALL' explains the new scheme in detail.
5111 * The header files no longer need to be processed into ANSI C and
5112 traditional C versions. There is just one set of files to install, and
5113 it will work with ANSI or old C compilers (including `gcc -traditional').
5115 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
5116 MIPS DECStation running Ultrix 4.
5118 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
5119 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
5120 made itself into a shared library.
5122 * Yet further improved support for the i386, running 4.3 BSD-like systems
5123 (such as Mach 3 with the Unix single-server), or System V.
5125 * New function `strncasecmp' to do case-insensitive string comparison
5126 with limited length.
5128 * New function `strsep' is a reentrant alternative to `strtok'.
5130 * New functions `scandir' and `alphasort' for searching directories.
5132 * New function `setenv' is a better interface to `putenv'.
5134 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
5135 function for traversing a directory tree.
5137 * The GNU obstack package is now also part of the C library.
5138 The new function `open_obstack_stream' creates a stdio stream that
5139 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
5140 formatted output directly to an obstack.
5142 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
5143 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
5145 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
5147 * The new functions `strfry' and `memfrob' do mysterious and wonderful
5148 things to your strings.
5150 * There are some new test programs: test-fseek, testmb, and testrand.
5152 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
5153 These ports are not finished, but are a good starting place for really
5154 supporting those systems.
5156 * `/etc/localtime' is now the standard location for the file that says what
5157 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
5158 This follows the general principle that `/etc' is the place for all local
5159 configuration files.
5161 * The C library header files now use `extern "C"' when used by the C++
5162 compiler, so the C library should now work with C++ code.
5164 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
5165 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
5168 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
5169 function which uses the `merge sort' algorithm, and is said to be
5170 significantly faster than the old GNU `qsort' function. Merge sort is
5171 now the standard `qsort' function. The new algorithm can require a lot
5172 of temporary storage; so, the old sorting function is called when the
5173 required storage is not available.
5175 * The C library now includes Michael Glad's Ultra Fast Crypt, which
5176 provides the Unix `crypt' function, plus some other entry points.
5178 * The code and header files taken from 4.4 BSD have been updated with the
5179 latest files released from Berkeley.
5181 ----------------------------------------------------------------------
5182 Copyright information:
5184 Copyright (C) 1992-2018 Free Software Foundation, Inc.
5186 Permission is granted to anyone to make or distribute verbatim copies
5187 of this document as received, in any medium, provided that the
5188 copyright notice and this permission notice are preserved,
5189 thus giving the recipient permission to redistribute in turn.
5191 Permission is granted to distribute modified versions
5192 of this document, or of portions of it,
5193 under the above conditions, provided also that they
5194 carry prominent notices stating who last changed them.
5197 version-control: never