1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2014 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
10 * The following bugs are resolved with this release:
12 6652, 12926, 13862, 14132, 14138, 14171, 14498, 15215, 15884, 16469,
13 16619, 16740, 16857, 17192, 17266, 17344, 17363, 17370, 17371, 17411,
14 17460, 17475, 17485, 17501, 17506, 17508, 17522, 17555, 17570, 17571,
15 17572, 17573, 17574, 17581, 17582, 17583, 17584, 17585, 17589, 17594,
16 17601, 17608, 17616, 17625, 17633, 17647, 17653, 17664, 17665, 17668,
19 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
20 under certain input conditions resulting in the execution of a shell for
21 command substitution when the applicaiton did not request it. The
22 implementation now checks WRDE_NOCMD immediately before executing the
23 shell and returns the error WRDE_CMDSUB as expected.
25 * The minimum GCC version that can be used to build this version of the GNU
26 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
27 still be used to compile programs using the GNU C Library.
29 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
31 * The obsolete sigvec function has been removed. This was the original
32 4.2BSD interface that inspired the POSIX.1 sigaction interface, which
33 programs have been using instead for about 25 years. Of course, ABI
34 compatibility for old binaries using sigvec remains intact.
38 * The following bugs are resolved with this release:
40 6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347, 15514,
41 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198, 16275,
42 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447, 16516,
43 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600, 16609,
44 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639, 16642,
45 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689, 16695,
46 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739, 16740,
47 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791, 16796,
48 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849, 16854,
49 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912, 16915,
50 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958, 16965,
51 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022, 17031,
52 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078, 17079,
53 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150, 17153,
54 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
56 * Optimized strchrnul implementation for AArch64. Contributed by ARM Ltd.
58 * Reverted change of ABI data structures for s390 and s390x:
59 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
60 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
61 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
62 are preserved pointing straight to the same implementation as the old ones.
63 Given that, new callers will simply provide a too-big buffer to these
64 functions. Any applications/libraries out there that embed jmp_buf or
65 ucontext_t in an ABI-relevant data structure that have already been rebuilt
66 against 2.19 headers will have to rebuilt again. This is necessary in any
67 case to revert the breakage in their ABI caused by the glibc change.
69 * Support for file description locks is added to systems running the
70 Linux kernel. The standard file locking interfaces are extended to
71 operate on file descriptions, not file descriptors, via the use of
72 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
73 are associated with an open file instead of a process.
75 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
77 * The minimum Linux kernel version that this version of the GNU C Library
78 can be used with is 2.6.32.
80 * Running the testsuite no longer terminates as soon as a test fails.
81 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
82 with PASS or FAIL lines for individual tests. A summary of the results is
83 printed, including a list of failing lists, and "make check" exits with
84 error status if there were any unexpected failures. "make check
85 stop-on-test-failure=y" may be used to keep the old behavior.
87 * The am33 port, which had not worked for several years, has been removed
90 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
91 supported; they now act the same as _DEFAULT_SOURCE (but generate a
92 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
93 conflicted with POSIX (support for which was removed in 2.19), the
94 interfaces those macros enabled remain available when compiling with
95 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
98 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
100 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
101 This may improve lock scaling of existing programs on TX capable systems.
102 The lock elision code is only built with --enable-lock-elision=yes and
103 then requires a GCC version supporting the TX builtins. With lock elision
104 default mutexes are elided via __builtin_tbegin, if the cpu supports
105 transactions. By default lock elision is not enabled and the elision code
108 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
109 copy the path argument. This allowed programs to cause posix_spawn to
110 deference a dangling pointer, or use an unexpected pathname argument if
111 the string was modified after the posix_spawn_file_actions_addopen
114 * All supported architectures now use the main glibc sysdeps directory
115 instead of some being in a separate "ports" directory (which was
116 distributed separately before glibc 2.17).
118 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
119 On configurations that support it (all Linux configurations), it's now
120 used regardless of the --enable-add-ons switch to configure. It is no
121 longer possible to build such configurations without pthreads support.
123 * Locale names, including those obtained from environment variables (LANG
124 and the LC_* variables), are more tightly checked for proper syntax.
125 setlocale will now fail (with EINVAL) for locale names that are overly
126 long, contain slashes without starting with a slash, or contain ".." path
127 components. (CVE-2014-0475) Previously, some valid locale names were
128 silently replaced with the "C" locale when running in AT_SECURE mode
129 (e.g., in a SUID program). This is no longer necessary because of the
132 * On x86-64, the dynamic linker's lazy-binding support is now compatible
133 with application code using Intel MPX instructions. (With all previous
134 versions, the MPX register state could be clobbered when making calls
135 into or out of a shared library.) Note that while the new dynamic
136 linker is compatible with all known x86 hardware whether or not it
137 supports Intel MPX, some x86 instruction-set emulators might fail to
138 handle the new instruction encodings. This is known to affect Valgrind
139 versions up through 3.9 (but will be fixed in the forthcoming 3.10
140 release), and might affect other tools that do instruction emulation.
142 * Support for loadable gconv transliteration modules has been removed.
143 The support for transliteration modules has been non-functional for
144 over a decade, and the removal is prompted by security defects. The
145 normal gconv conversion modules are still supported. Transliteration
146 with //TRANSLIT is still possible, and the //IGNORE specifier
147 continues to be supported. (CVE-2014-5119)
149 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
150 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
151 resulting a denial-of-service security vulnerability in applications which
152 use functions related to iconv. (CVE-2014-6040)
156 * The following bugs are resolved with this release:
158 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
159 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
160 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
161 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
162 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
163 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
164 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
165 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
166 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
167 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
168 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
169 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
170 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
171 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
172 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
173 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
174 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
175 16431, 16453, 16474, 16506, 16510, 16529
177 * Slovenian translations for glibc messages have been contributed by the
178 Translation Project's Slovenian team of translators.
180 * The public headers no longer use __unused nor __block. This change is to
181 support compiling programs that are derived from BSD sources and use
182 __unused internally, and to support compiling with Clang's -fblock
183 extension which uses __block.
185 * CVE-2012-4412 The strcoll implementation caches indices and rules for
186 large collation sequences to optimize multiple passes. This cache
187 computation may overflow for large collation sequences and may cause a
188 stack or buffer overflow. This is now fixed to use a slower algorithm
189 which does not use a cache if there is an integer overflow.
191 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
192 rules for large collation sequences to optimize multiple passes and falls
193 back to alloca if malloc fails, resulting in a possible stack overflow.
194 The implementation now falls back to an uncached collation sequence lookup
197 * CVE-2013-4788 The pointer guard used for pointer mangling was not
198 initialized for static applications resulting in the security feature
199 being disabled. The pointer guard is now correctly initialized to a
200 random value for static applications. Existing static applications need
201 to be recompiled to take advantage of the fix (bug 15754).
203 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
204 to the d_name member of struct dirent, or omit the terminating NUL
205 character. (Bugzilla #14699).
207 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
208 aligned_alloc functions could allocate too few bytes or corrupt the
209 heap when passed very large allocation size values (Bugzilla #15855,
212 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
213 for AF_INET6 has been fixed (Bugzilla #16072).
215 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
216 pap_CW, quz_PE, the_NP.
218 * Substantially revised locales: gd_GB, ht_HT
220 * The LC_ADDRESS field was updated to support country_car for almost all
223 * ISO 1427 definitions were updated.
225 * ISO 3166 definitions were updated.
227 * The localedef utility now supports --big-endian and --little-endian
228 command-line options to generate locales for a different system from that
229 for which the C library was built.
231 * Binary locale files now only depend on the endianness of the system for
232 which they are generated and not on other properties of that system. As a
233 consequence, binary files generated with new localedef may be incompatible
234 with old versions of the GNU C Library, and binary files generated with
235 old localedef may be incompatible with this version of the GNU C Library,
236 in the following circumstances:
238 + Locale files may be incompatible on m68k systems.
240 + Locale archive files (but not separate files for individual locales) may
241 be incompatible on systems where plain "char" is signed.
243 * The configure option --disable-versioning has been removed. Builds with
244 --disable-versioning had not worked for several years.
246 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
247 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
249 * SystemTap probes for malloc have been introduced.
251 * SystemTap probes for slow multiple precision fallback paths of
252 transcendental functions have been introduced.
254 * Support for powerpc64le has been added.
256 * The soft-float powerpc port now supports e500 processors.
258 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
260 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
261 set of header declarations that are enabled by default, even when other
262 feature test macros or compiler options such as -std=c99 would otherwise
263 disable some of those declarations.
265 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
266 conflict with POSIX. The libbsd-compat library (which was a dummy library
267 that did nothing) has also been removed.
269 * Preliminary documentation about Multi-Thread, Async-Signal and
270 Async-Cancel Safety has been added.
272 * Change of ABI data structures for s390 and s390x:
273 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
274 allow for future hardware extensions. All library functions that accept or
275 return these structures were versioned in order to provide backwards
276 compatibility with existing code. However, not all cases can be handled
277 with interface versioning. If an application embeds either structure into
278 another structure and that structure is passed to another compilation unit
279 which expects the newer larger-sized object then any access to the new
280 fields will result in undefined behaviour. Similarly any access to fields
281 that were moved by the enlarging of the structures will cause undefined
282 behaviour. To fix the undefined behaviour all objects that are part of the
283 final in-memory image must agree on the size of structures, and this may
284 require recompilation.
288 * The following bugs are resolved with this release:
290 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
291 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
292 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
293 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
294 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
295 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
296 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
297 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
298 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
299 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
300 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
301 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
302 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
305 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
306 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
307 Distributions can re-enable building and using pt_chown via the new configure
308 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
309 considerable security risks and should only be used if the distribution
310 understands and accepts the risks.
312 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
315 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
316 fixed (Bugzilla #15330).
318 * Add support for calling C++11 thread_local object destructors on thread
319 and program exit. This needs compiler support for offloading C++11
320 destructor calls to glibc.
322 * Improved worst case performance of libm functions with double inputs and
325 * Support for priority inherited mutexes in pthread condition variables on
326 non-x86 architectures.
328 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
330 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
332 * Optimized string functions for ARM. Implemented by Will Newton and
335 * Optimized libm functions for SPARC. Implemented by David S. Miller.
337 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
340 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
341 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
343 * Added a benchmark framework to track performance of functions in glibc.
345 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
346 It is based on draft TS 18661 and currently enabled as a GNU extension.
348 * On Linux, the clock function now uses the clock_gettime system call
349 for improved precision, rather than old times system call.
351 * Added support for version-3 tz format files. This is needed when using
352 the tz database release 2013e or later, and affects a few unusual cases --
353 currently only TZ='America/Godthab' for time stamps after 2037.
355 * Added new API functions pthread_getattr_default_np and
356 pthread_setattr_default_np to get and set the default pthread
357 attributes of a process.
359 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
360 This may improve lock scaling of existing programs on TSX capable systems.
361 When the --enable-lock-elision=yes parameter is specified at configure
362 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
365 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
366 availability). Implemented by Ryan S. Arnold.
368 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
372 * The following bugs are resolved with this release:
374 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
375 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
376 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
377 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
378 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
379 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
380 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
381 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
382 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
383 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
384 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
385 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
386 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
387 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
388 14879, 14889, 14893, 14898, 14914.
390 * Optimization of memcpy for MIPS.
392 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
393 EMFILE has been fixed (Bugzilla #14889).
395 * The add-on ports collection is now distributed in the "ports" subdirectory
396 of the main GNU C Library distribution, rather than separately.
398 * Port to ARM AArch64 contributed by Linaro.
400 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
401 Optimized versions of memcpy, memset, and memcmp added for System z10 and
403 Implemented by Andreas Krebbel.
405 * The new function secure_getenv allows secure access to the environment,
406 returning NULL if running in a SUID/SGID process. This function replaces
407 the internal function __secure_getenv.
409 * SystemTap static probes have been added into the dynamic linker.
410 Implemented by Gary Benson.
412 * Optimizations of string functions strstr, strcasestr and memmem.
413 Implemented by Maxim Kuvyrkov.
415 * The minimum Linux kernel version that this version of the GNU C Library
416 can be used with is 2.6.16.
418 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
419 powerpc POWER7. Implemented by Will Schmidt.
421 * New configure option --disable-nscd builds the C library such that it
422 never attempts to contact the Name Service Caching Daemon (nscd).
423 New configure option --disable-build-nscd avoids building nscd itself;
424 this is the default if --disable-nscd is used.
426 * Improved support for cross-compilation, including cross-testing and
427 bootstrap builds without a previously built glibc.
429 * Several testsuite tests are now able to test multiple IFUNC variants of an
430 interface, rather than just testing the one that would be chooen by
433 * New configure options --with-bugurl and --with-pkgversion, for
434 distributors to use to embed their bug-reporting and package version
435 information in --help and --version output.
437 * The ttyname and ttyname_r functions on Linux now fall back to searching for
438 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
439 allows creation of chroots without the procfs mounted on /proc.
441 * The `crypt' function now fails if passed salt bytes that violate the
442 specification for those values. On Linux, the `crypt' function will
443 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
444 enabled, and fail on encrypted strings using the MD5 or DES algorithm
445 when the mode is enabled.
447 * The `clock_*' suite of functions (declared in <time.h>) is now available
448 directly in the main C library. Previously it was necessary to link with
449 -lrt to use these functions. This change has the effect that a
450 single-threaded program that uses a function such as `clock_gettime' (and
451 is not linked with -lrt) will no longer implicitly load the pthreads
452 library at runtime and so will not suffer the overheads associated with
453 multi-thread support in other code such as the C++ runtime library.
455 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
460 * The following bugs are resolved with this release:
462 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
463 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
464 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
465 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
466 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
467 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
468 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
469 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
470 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
471 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
472 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
473 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
474 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
475 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
476 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
477 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
478 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
479 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
480 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
481 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
482 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
483 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
486 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
487 configuring glibc with:
488 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
489 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
490 Implemented by H.J. Lu.
494 + define static_assert
496 + do not declare gets
498 + declare at_quick_exit and quick_exit also for ISO C11
500 + aligned_alloc. NB: The code is deliberately allows the size parameter
501 to not be a multiple of the alignment. This is a moronic requirement
502 in the standard but it is only a requirement on the caller, not the
507 + uchar.h support added
509 + CMPLX, CMPLXF, CMPLXL added
511 Implemented by Ulrich Drepper.
513 * Support for the IA-64 has been moved to ports.
515 * Remove support for anything but ELF binary format
517 * Checking versions of poll, ppoll added.
518 Implemented by Ulrich Drepper.
520 * More generic and 64-bit performance optimizations to math functions.
521 Implemented by Ulrich Drepper.
523 * New configure option --enable-obsolete-rpc makes the deprecated RPC
524 headers and functions available at compile time as they were before
525 version 2.14. This option will be removed at some time in the future
526 after the TI-RPC library becomes fully sufficient for the needs of
527 existing applications.
529 * Compatibility code for Linux kernel versions before 2.4 has been removed.
530 Note that glibc is not expected to work with any Linux kernel version
533 * New header <sys/auxv.h> and function getauxval allowing easy access to
534 the AT_* key-value pairs passed from the Linux kernel. The header also
535 defines the HWCAP_* bits associated with the AT_HWCAP key.
537 * New locales: mag_IN
539 * New configure option --enable-systemtap builds SystemTap static probes
540 into libc for setjmp and longjmp and into libpthread for various operations.
541 So far the setjmp/longjmp probes and some of the libpthread probes are
542 provided only for i*86 and x86_64.
543 Implemented by Roland McGrath and Rayson Ho.
545 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
547 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
550 * More optimized functions for SPARC. Implemented by David S. Miller.
552 * Improved support for cross-compilation, especially bootstrap builds
553 without a previously built glibc.
555 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
556 Chris Metcalf from Tilera.
558 * Support for the old ARM ABI has been removed from ports. Only the EABI is
559 now supported for ARM processors.
561 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
562 as the name of the dynamic linker, to distinguish it from the
563 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
565 * Support for CRIS has been removed from ports.
567 * A new class of installed header has been documented for low-level
568 platform-specific functionality. PowerPC added the first instance with a
569 function to provide time base register access. Contributed by Tulio
570 Magno Quites Machado Filho.
572 * ix86 configurations now install header files that are consistent with
573 what x86-64 configurations install. These same header files can be used
574 for -m32, -m64, or -mx32 builds.
575 Contributed by H.J. Lu.
577 * Math library bug fixes. A thorough audit of all open math library bugs was
578 conducted by Joseph Myers. Significant progress was made on many math
579 library bugs resulting in more accurate exceptions and function results.
580 Many thanks to all those that contributed including Andreas Jaeger for his
581 patch review and work on the x87 trigonometric instruction issues.
583 * Timezone data is no longer installed. Timezone-related binaries and scripts
584 will continue to be installed. Users should obtain their timezone data from
585 their distribution provider or from the tzdata package at
586 <ftp://munnari.oz.au/pub/>.
590 * The following bugs are resolved with this release:
592 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
593 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
594 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
595 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
596 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
597 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
598 13484, 13506, 13515, 13523, 13524, 13538, 13540
600 * New program pldd to list loaded object of a process
601 Implemented by Ulrich Drepper.
603 * Add nss_db support back to glibc. No more dependency on Berkeley db
604 and support for initgroups lookups.
605 Implemented by Ulrich Drepper.
607 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
608 Contributed by HJ Lu.
610 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
611 Contributed by HJ Lu.
613 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
614 on x86-32 and x86-64.
615 Contributed by Liubov Dmitrieva.
617 * Optimized strchr and strrchr for SSE on x86-32.
618 Contributed by Liubov Dmitrieva.
620 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
621 for x86-64 and x86-32.
622 Contributed by Liubov Dmitrieva.
624 * New interfaces: scandirat, scandirat64
625 Implemented by Ulrich Drepper.
627 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
628 Implemented by Ulrich Drepper.
630 * nscd now also caches the netgroup database.
631 Implemented by Ulrich Drepper.
633 * Integrate libm with gcc's -ffinite-math-only option.
634 Implemented by Ulrich Drepper.
636 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
637 to math functions. Implemented by Ulrich Drepper.
639 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
640 Implemented by Ulrich Drepper.
642 * New Linux interfaces: process_vm_readv, process_vm_writev
644 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
645 Implemented by Ulrich Drepper.
647 * Optimized nearbyint and strcasecmp for PPC.
648 Implemented by Adhemerval Zanella.
650 * New locales: bho_IN, unm_US, es_CU, ta_LK
654 * The following bugs are resolved with this release:
656 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
657 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
658 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
659 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
660 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
661 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
662 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
663 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
664 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
665 12795, 12811, 12813, 12814, 12841
667 * The RPC implementation in libc is obsoleted. Old programs keep working
668 but new programs cannot be linked with the routines in libc anymore.
669 Programs in need of RPC functionality must be linked against TI-RPC.
670 The TI-RPC implementation is IPv6 enabled and there are other benefits.
672 Visible changes of this change include (obviously) the inability to link
673 programs using RPC functions without referencing the TI-RPC library and the
674 removal of the RPC headers from the glibc headers.
675 Implemented by Ulrich Drepper.
677 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
678 syncfs, setns, sendmmsg
680 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
681 yue_HK, lij_IT, mhr_RU
683 * New encodings: CP770, CP771, CP772, CP773, CP774
685 * New program sotruss to trace calls through PLTs
686 Implemented by Ulrich Drepper.
688 * The malloc hook implementation is marked deprecated and will be removed
689 from the default implementation in the next version. The design never
690 worked ever since the introduction of threads. Even programs which do
691 not create threads themselves can use multiple threads created internally.
695 * The following bugs are resolved with this release:
697 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
698 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
699 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
700 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
703 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
705 * POWER7 optimizations: memset, memcmp, strncmp
707 * New optimized string functions for x86-64: strnlen (SSE2),
708 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
709 Implemented by Ulrich Drepper.
713 * The following bugs are resolved with this release:
715 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
716 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
717 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
718 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
719 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
720 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
721 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
722 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
724 * New interfaces: pthread_getname_np, pthread_setname_np
726 * New Linux interface: recvmmsg
728 * STT_GNU_IFUNC implemented for Sparc by David Miller.
730 * The dynamic linker now recognizes supported ABI versions from the
731 EI_ABIVERSION field in the ELF header.
732 Implemented by Ulrich Drepper.
734 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
735 will not be used to fill in password fields in the passwd.byname replies.
736 Instead it is used to synthesize the shadow.byname table, should it be
737 missing. This is a useful mode in some installations involving Solaris.
738 Implemented by Ulrich Drepper.
740 * New locales: kok_IN, sq_MK, cv_RU
744 * The following bugs are resolved with this release:
746 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
747 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
748 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
749 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
750 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
751 10789, 10817, 10823, 10840, 10847
753 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
755 Implemented by Ulrich Drepper.
757 * Checking version of longjmp added that fails if an uninitialized stack
758 frame would be created. Implemented by Ulrich Drepper.
760 * STT_GNU_IFUNC is now supported in static executables.
761 Implemented by H.J. Lu.
763 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
765 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
766 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
767 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
768 Contributed by H.J. Lu.
770 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
771 Implemented by Ulrich Drepper.
773 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
775 Contributed by H.J. Lu.
777 * Support for fma instruction in AVX on x86-64.
778 Implemented by H.J. Lu and Ulrich Drepper.
780 * AVX support in x86-64 auditing support in ld.so.
781 Implemented by H.J. Lu.
783 * STB_GNU_UNIQUE support added.
784 Implemented by Ulrich Drepper.
786 * Implement second fallback mode for optimized DNS lookup for even more
787 broken environments. If two requests from the same port are not
788 handled correctly close the socket and open a new one before sending
789 the second request. The 'single-request-reopen' option in /etc/resolv.conf
790 can be used to select this mode right away, instead of rediscovering the
791 necessity is every process again.
792 Implemented by Ulrich Drepper.
794 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
795 Implemented by Adam Tkac.
797 * Optimized iconv conversions for S390x.
798 Implemented by Andreas Krebbel.
800 * Using condvars with PI mutexes is now more efficient due to kernel
801 support for requeueing to PI futexes. NPTL support added for x86-64.
802 Implemented by Ulrich Drepper.
804 * New locales: ps_AF, my_MM
808 * The following bugs are resolved with this release:
810 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
811 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
812 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
813 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
814 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
816 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
817 Implemented by Ulrich Drepper.
819 * New Linux interfaces: accept4, fallocate, fallocate64.
820 Implemented by Ulrich Drepper.
822 * Correct declarations of string function when used in C++ code. This
823 could lead to compile errors for invalid C++ code.
825 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
828 * New POSIX 2008 interface: psiginfo
829 Implemented by Ulrich Drepper.
831 * New ISO C++1x interfaces: quick_exit, at_quick_exit
832 Implemented by Ulrich Drepper.
834 * Support for selecting between multiple function definitions at runtime
835 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
837 * The libcrypt library can now use the hash function implementations in
838 NSS. Implemented by Ulrich Drepper.
840 * The malloc implementation can be compiled to be less memory efficient
841 but higher performing in multi-threaded programs.
842 Implemented by Ulrich Drepper.
844 * New locales: nan_TW@latin, ks_IN
846 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
847 Implemented by Ulrich Drepper.
849 * Extended printf hook support. It is possible to use user-defined types
850 and extend existing format specifiers.
851 Implemented by Ulrich Drepper.
853 * Handling for group shadow files has been added.
854 Implemented by Ulrich Drepper.
856 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
857 servers (the case, e.g., for some people using the built-in DNS
858 server in ADSL modems/routers). There is a once-per-process timeout
859 in case of a broken server. To avoid it, users can run nscd or put
860 'options single-request' in /etc/resolv.conf.
861 Implemented by Ulrich Drepper.
865 * The following bugs are resolved with this release:
867 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
868 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
869 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
870 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
871 6968, 6974, 6980, 6995, 7008, 7009, 7029
873 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
874 up at the same time. Implemented by Ulrich Drepper.
876 * TLS descriptors for LD and GD on x86 and x86-64.
877 Implemented by Alexandre Oliva.
879 * getaddrinfo now handles DCCP and UDPlite.
880 Implemented by Ulrich Drepper.
882 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
883 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
884 Implemented by Ulrich Drepper.
886 * New implementation of memmem, strstr, and strcasestr which is O(n).
887 Implemented by Eric Blake.
889 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
891 * Implement "e" option for popen to open file descriptor with the
892 close-on-exec flag set. Implemented by Ulrich Drepper.
894 * Implement "b" mode for fmemopen. In this mode writes writes don't
895 implicitly add a NUL byte and seeks from the end of the buffer really
896 use the buffer end, not the string length as the basis.
897 Implemented by Ulrich Drepper.
899 * Many functions, exported and internal, now atomically set the close-on-exec
900 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
902 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
904 Implemented by Pravin Satpute.
906 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
910 * The following bugs are resolved with this release:
912 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
913 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
914 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
915 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
916 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
917 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
918 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
920 * New locales: bo_CN, bo_IN, shs_CA.
922 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
924 * Sorting rules for some Indian languages (Devanagari and Gujarati).
925 Implemented by Pravin Satpute.
927 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
929 * nscd caches now all timeouts for DNS entries
930 Implemented by Ulrich Drepper.
932 * nscd is more efficient and wakes up less often.
933 Implemented by Ulrich Drepper.
935 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
936 vdprintf, and obstack_vprintf.
937 Implemented by Jakub Jelinek.
939 * Faster memset for x86-64.
940 Implemented by Harsha Jagasia and H.J. Lu.
942 * Faster memcpy on x86.
943 Implemented by Ulrich Drepper.
945 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
946 Implemented by Ulrich Drepper.
948 * Faster sqrt and sqrtf implemention for some PPC variants.
949 Implemented by Steven Munroe.
953 * The following bugs are resolved with this release:
955 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
956 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
957 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
958 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
959 5071, 5103, 5104, 5112, 5113, 5184, 5186
961 * More checking functions: fread, fread_unlocked, open*, mq_open.
962 Implemented by Jakub Jelinek and Ulrich Drepper.
964 * Extend fortification to C++. Implemented by Jakub Jelinek.
966 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
967 by not recognizing 'a' as a modifier when those specs are requested.
968 Implemented by Jakub Jelinek.
970 * PPC optimizations to math and string functions.
971 Implemented by Steven Munroe.
973 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
974 options to be passed. Implemented by Ulrich Drepper.
976 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
978 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
979 Implemented by Ulrich Drepper.
981 * Handle private futexes in the NPTL implementation.
982 Implemented by Jakub Jelinek and Ulrich Drepper.
984 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
985 Implemented by Roland McGrath and Ulrich Drepper.
987 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
989 * SHA-256 and SHA-512 based password encryption.
990 Implemented by Ulrich Drepper.
992 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
993 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
996 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
997 Implemented by Ulrich Drepper.
1001 * The following bugs are resolved with this release:
1003 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
1004 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
1005 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
1006 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
1007 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
1008 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
1009 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
1012 * New Linux interfaces: epoll_pwait, sched_getcpu.
1014 * New generic interfaces: strerror_l.
1016 * nscd can now cache the services database. Implemented by Ulrich Drepper.
1020 * The following bugs are resolved with this release:
1022 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
1023 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
1024 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
1025 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
1026 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
1027 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
1028 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
1029 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
1030 3225, 3251, 3252, 3253, 3273
1032 * For Linux, the sorting of addresses returned by getaddrinfo now also
1033 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
1034 Implemented by Ulrich Drepper.
1036 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
1037 Implemented by Ulrich Drepper.
1039 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
1041 * New iconv module for MIK. Contributed by Alexander Shopov.
1043 * For sites with broken group and/or passwd database, the auto-propagate
1044 option of nscd can prevent creating ID lookup entries from the results
1045 of a name lookup and vice versa. This usually is no problem but some
1046 site might have problems with the default behavior.
1047 Implemented by Ulrich Drepper.
1049 * Iterating over entire database in NIS can be slow. With the
1050 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
1051 to trade time for memory. The entire database will be read at once.
1052 Implemented by Ulrich Drepper.
1054 * The interfaces introduced in RFC 3542 have been implemented by
1057 * Support for the new ELF hash table format was added by Ulrich Drepper.
1059 * Support for priority inheritance mutexes added by Jakub Jelinek and
1062 * Support for priority protected mutexes added by Jakub Jelinek.
1064 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1065 or_IN, csb_PL, fy_NL, sr_ME.
1069 * More overflow detection functions.
1071 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1072 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1074 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1075 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1076 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1077 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1078 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1079 by Masahide Washizawa.
1081 * It is now possible to install audit libraries for the dynamic linker using
1082 LD_AUDIT. Implemented by Ulrich Drepper.
1084 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1085 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1086 For a libc and libpthread that works well on Linux 2.4 kernels, we
1087 recommend using the stable 2.3 branch.
1089 * The new function open_wmemstream acts like open_memstream,
1090 but uses a wchar_t wide character buffer.
1092 * The new function ppoll is an improved version of poll, similar to pselect.
1094 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1095 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1096 renameat, unlinkat, linkat, symlinkat, readlinkat.
1098 * New Linux kernel system calls: unshare,
1099 inotify_init, inotify_add_watch, inotify_rm_watch.
1101 * The euidaccess function is now also known by the alias eaccess,
1102 for compatibility with some other systems.
1104 * Timezone data updated to 2006b version.
1108 * The following bugs are resolved with this release:
1110 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1111 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1112 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1113 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1114 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1115 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1117 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1119 * As of this release, GCC 4 can be used to compile the C Library.
1121 * Timezone data updated to 2005m version.
1125 * The following bugs are resolved with this release:
1127 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1128 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1129 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1130 777, 787, 821, 822, 823, 825
1132 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1136 * Support for RFC 3678. Real implementations exist only for Linux so far.
1137 Implemented by Ulrich Drepper.
1139 * nscd can now cache entries persistently. Expiring entries are reloaded.
1140 For speedups the cache can be shared in memory with client processes.
1141 Implemented by Ulrich Drepper.
1143 * nscd can now perform SELinux checks.
1144 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1146 * getaddrinfo queries are now cached. Canonical name lookup is performed
1148 Implemented by Ulrich Drepper.
1150 * The nothrow function attribute is used when headers are used by gcc when
1151 compiling C code. This can avoid significant amounts of exception
1154 * The malloc functions perform more error checking and are stricter when
1155 it comes to reacting on errors. The default action is to terminate
1156 the process after showing an error message. Implemented by Ulrich Drepper.
1158 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1159 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1161 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1162 namespaces using the new function dlmopen(). This feature is of course,
1163 like most other dynamic loading functionality, not available in statically
1164 linked applications. Implemented by Ulrich Drepper.
1166 * Low-overhead boundary checking variants of string and some stdio functions
1167 were added. These are to be used in conjunction with a gcc patch by
1168 Jakub Jelinek which adds calls to these functions if possible.
1169 Implemented by Jakub Jelinek and Ulrich Drepper.
1171 * Old code for several operating systems and machine architectures that
1172 have not been in working condition in a long time have been removed from
1173 the main source tree maintained by the GNU C Library's maintainers.
1174 These files are now reside in the separate `ports' source module
1175 that is usable as an add-on when building the library.
1179 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1180 interrogate the dynamic linker, compatible with the Solaris interface.
1182 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1183 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1185 * getifaddrs now uses the netlink interface on Linux to get its information.
1186 Implemented by Thorsten Kukuk.
1188 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1189 Implemented by Ulrich Drepper.
1191 * support for non-executable stacks on x86 has been added. Changes mostly
1194 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1197 * getaddrinfo now performs destination address selection according to
1202 * Thread-safe interfaces for many functions that access locale data
1203 were added in version 2.3, but these features were omitted from NEWS.
1204 Many functions have variants with an `_l' suffix that take a `locale_t'
1205 object as a parameter rather than consulting the current locale.
1206 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1207 create and maintain `locale_t' objects. Additionally, the new function
1208 `uselocale' sets "the current locale" (as used by functions not so
1209 parameterized) set for an individual thread. These features were added
1210 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1212 * The functions getresuid, getresgid, setresuid, and setresgid, which
1213 have long been available on Linux, are now declared in <unistd.h>
1214 and are now also available on the Hurd.
1216 * ELF thread-local storage support (TLS) now works on x86-64.
1218 * The new dynamic string token $LIB is expanded in shared library names.
1219 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1221 * Aldy Hernandez contributed complete software floating point support for
1222 PowerPC machines with no FPU.
1224 * fexecve is implemented on Linux.
1226 * The `btowc' function should work at least twice as fast due to
1227 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1229 * With approriate thread add-ons cancelable functions are now implemented
1230 in libc.so as well. No need to call the function in libpthread. This
1231 change allowed to finally disable the incorrect and expensive handling
1232 of weak definition in ld.so.
1234 * Yet more PLT entries in libc.so have been removed. We finally arrived
1235 at the bare minimum. Startup times improved appropriately.
1237 * Support for the new Linux/x86 system call interface was added. The
1238 AT_SYSINFO auxiliary vector entry is recognized and handled.
1242 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1245 * iconv (the program and the interface) now accepts empty names (excluding
1246 options like //TRANSLIT) to mean "use charset of current locale".
1248 * localedef can now transliterate characters in strings which are not in
1249 the provided charmap. The information from the input locale is used.
1251 * Prelinking support was added for ELF targets. This requires additional
1252 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1254 * Read-only stdio streams now use mmap to speed up operation by eliminating
1255 copying and buffer underflows. To use add 'm' to the mode string of
1256 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1258 * The malloc functions were completely rewritten by Wolfram Gloger based
1259 on Doug Lea's malloc-2.7.0.c.
1261 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1262 implementation of regex.
1264 * Bruno Haible upgraded the iconv and locale implementation to support
1267 * Contents of the LC_* and LANG environment variables in the CEN style are
1268 not recognized anymore. It never was used. Change by Ulrich Drepper.
1270 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1271 thread-local storage (TLS) ABI on some platforms.
1272 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1274 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1275 EUC-JISX0213, and TSCII.
1277 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1278 BSD-compatible interface for getting all network interface addresses.
1279 Implementation for IPv4 by Roland McGrath.
1281 * Loading of locale data is faster due to the introduction of a locale
1282 archive. Implemented by Roland McGrath and Ulrich Drepper.
1284 * Startup times are significantly reduced by not using exported functions
1285 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1288 * Steven Munroe contributed a port to PowerPC64/Linux.
1292 * The Hurd now uses the GNU libio implementation of stdio rather than the
1293 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1295 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1296 with the same behavior as the Linux system call of the same name.
1300 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1301 128-bit long double format.
1303 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1304 IBM1161, and IBM1162 charsets.
1306 * Andreas Jaeger contributed a port to x86-64/Linux.
1308 * Peter Bruin contributed a port to PowerPC/Hurd.
1310 * libc functions using I/O streams now can handle wide-oriented streams
1313 * optimizations in the dynamic linker. Binaries created by recent binutils
1314 versions start up quicker due to reduced time spent on relocations.
1316 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1320 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1321 asinh, atanh, j0 for the 128-bit long double format.
1323 * Bruno Haible updated all the code handling Unicode in some form to
1324 support Unicode 3.1.
1326 * Speed of regex for single-byte locales is back to previous levels.
1327 Patch by Isamu Hasegawa.
1329 * Alpha, SPARC, and IA-64 now also using floating stacks.
1331 * Startup time of internationalized applications greatly improved through
1332 iconv cache. Use iconvconfig to generate the cache file.
1333 Contributed by Ulrich Drepper.
1335 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1336 severe performance problems. Patch by David Mosberger.
1338 * The Hurd port got a lot more functionality like AIO, various stdio
1339 extensions, etc. Mainly done by Roland McGrath.
1341 * mtrace can now lookup symbols in shared libraries.
1345 * Intel's IA-64 math library is largely integrated. It provides fast and
1346 accurate implementatations for most basic and standard math functions
1347 in float, double, and long double format.
1349 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1350 and asin for the 96-bit long double format and asin, log, tan for the
1351 128-bit long double format.
1353 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1354 The basic double functions exist today. Contributed by Abraham Ziv
1355 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1356 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1358 * An asynchronous name lookup library was added. The interface is designed
1359 after POSIX AIO. The proposal was circulated beforehand to get comments.
1360 No negative ones came in. Implemented by Ulrich Drepper.
1362 * Port to S390/64bit contributed by Martin Schwidefsky
1363 <schwidefsky@de.ibm.com>.
1365 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1366 of functions for Linux/IA-64.
1368 * The RPC code is now thread safe. Threads can now use the same service
1369 of different services at the same time. Patch by Eric Norum
1370 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1372 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1373 family of functions for Linux/S390.
1375 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1376 of functions for Linux/x86.
1378 * Port to Linux/CRIS contributed by Axis Communications.
1382 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1383 we can now check for namespace violations and missing declarations. The
1384 result is that almost all headers are now Unix-compliant (as defined in
1385 the upcoming XPG6). The negative side is that some programs might need
1386 corrections, too, if they depend on the incorrect form of the headers in
1387 previous versions which defined too many symbols and included too many
1390 * regex now handles multibyte character sets correctly.
1391 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1393 * iconv (the program) does now conform to the upcoming XPG6 and handles
1394 charmaps. Instead of the charset names the path of charmaps can be
1395 provided and the conversion happens based on this data.
1396 Contributed by Ulrich Drepper.
1398 * The locale program now provides detailed information about the installed
1403 only lists the names of the supported locales
1407 provides details such as country, language, and codeset name.
1408 Contributed by Ulrich Drepper.
1412 * The gencat program now parses the input file according to the charset
1413 selected by the LC_CTYPE category. This is important for stateful
1414 character sets. To make generating catalogs easier there is a way
1415 to overwrite the charset selected by the locale: before the first
1416 message or $ quote line the catalog can contain a line like
1418 $ codeset=ISO-8859-2
1420 to select the charset (ISO-8859-2 in this case).
1422 Implemented by Shinya Hanataka and Ulrich Drepper.
1424 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1425 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1426 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1428 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1429 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1431 * The LANGUAGE environment variable is now ignored unless the locale is
1432 changed from the default "C" locale.
1434 * The usual bug fixes.
1438 * Greg McGary added runtime support for bounds checking using gcc's
1439 new -fbounded-pointers option. ix86 target is complete. PowerPC
1442 * Thorsten Kukuk added secure mode support to nscd.
1444 * The Berkeley db libraries have been removed.
1446 Related, the nss_db module is now in a separate package since it
1447 obviously requires a database library being available.
1449 * Wide character I/O streams implemented by Ulrich Drepper.
1451 * Functions from the extended socket API added by Ulrich Drepper.
1453 * Functions feenableexcept and fedisableexcept to control the
1454 behaviour of individual exceptions have been added by Andreas Jaeger.
1456 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1458 * The resolver code has been updated from bind 8.2.3-T5B which supports
1459 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1462 This change could in some situations effect backward compatibility. Since
1463 now `_res' is a thread-local instead of a global variable, modifying it
1464 in one thread does not have any effect in other threads.
1466 The resolver library was also extended to allow IPv6 as the transport
1467 protocol for the requests. This work was done by Stig Venaas.
1469 * Compatibility code for K&R C compilers has been removed from the
1470 header files. A ISO C compiler is needed to use the library
1471 (conforming to either C89 or C99 standard).
1473 * Complete rewrite of the localedef program to support multibyte character
1474 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1475 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1476 Implemented by Ulrich Drepper.
1478 Bruno Haible significantly improved the generation and use of the data
1479 structures for the wide character tables.
1481 * Plural handling in gettext implemented by Ulrich Drepper.
1483 * The utmp daemon has been removed.
1485 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1487 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1490 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1492 * POSIX barriers implemented by Kaz Kylheku.
1494 * POSIX spawn function family implemented by Ulrich Drepper.
1496 * POSIX spinlocks are now available.
1498 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1500 * the configure option --enable-kernel=X.Y.Z allows to strip out
1501 compatibility for kernel versions before X.Y.Z. This is currently only
1502 implemented for Linux.
1504 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1505 field sin6_scope_id. This means that all programs using IPv6 should be
1506 recompiled. Don't expect binary compatibility with previous glibc
1509 * various conversion modules for IBM character sets contributed by
1512 * IA-64 port by Jes Sorensen and HJ Lu.
1526 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1528 * New xdr functions are added; some rpc functions are now 64bit clean.
1530 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1532 * Fixed known incompatibilities with glibc 2.0.
1534 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1536 * Optimized a number of functions (especially the ELF dynamic loader).
1538 * Update timezone data files.
1540 * lots of charmaps corrections
1542 * some new locale definitions and charmaps
1547 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1548 conform to POSIX member type requirements. Symbol versions have been
1549 adjusted as needed within the library, and for direct use by applications,
1550 but there is potential for problems if third-party libraries use
1551 struct timeval as part of their interface. This does not present
1552 a problem for X and other "essential" system libraries.
1554 * An additional locale model to support C++ Standard Library locale
1555 model and probably more was implemented by Ulrich Drepper.
1557 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1560 * Miles Bader provided the `argp' function family to support hierachical
1561 command line argument parsing, layered on top of getopt.
1563 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1565 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1568 * scanf recognizes the %a and %A format for scanning floating point numbers.
1570 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1571 information and interfaces for the available integer types.
1573 * about 130 new math functions were added to implement the ISO C9x math
1576 * the new header <complex.h> contains definitions of the complex math
1577 functions from ISO C 9X.
1579 * the new header <tgmath.h> defines generic macros to use complex or
1580 real valued functions.
1582 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1584 * Andreas Jaeger provided a test suite for the math library.
1586 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1588 * Ulrich Drepper added character set conversion functions (iconv).
1590 * Optimized string functions have been added.
1592 * The localedata addon is now part of glibc.
1594 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1596 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1597 daemon for NSS (nscd).
1599 Missing a better place here are some numbers on improvements. Under
1600 Linux 2.1.125 un-tar-ing the kernel sources takes
1604 using local files 12.19s 6.88s 22.91s
1606 using NIS 13.92s 8.91s 26.34s
1608 using NIS & nscd 10.37s 7.34s 25.30s
1610 using NIS+ 27.57s 30.37s 640.46s
1612 using NIS+ & nscd 10.25s 7.83s 26.51s
1614 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1616 Keep in mind that non-namelookup related operations dominate above times.
1617 It was just a common complain that using NIS+ unpacking the kernel is
1620 [1] The old nscd implementation is not available anymore since it was
1621 distributed with glibc up to version 2.0.98 and thus is now replaced.
1623 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1625 * Mark Kettenis provided a Hesiod NSS module.
1627 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1628 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1630 * rcmd can now handle netgroups (Dick Streefland).
1632 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1635 * Support for the IPv6 protocol has been added to the socket API, as per the
1636 latest draft standards.
1638 * Support for Linux 2.2 has been added.
1640 * Interface changes relative to the latest 2.0.x release:
1641 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1642 addseverity NEW: Unix98
1643 alphasort64 NEW: LFS
1644 argp_err_exit_status NEW: argp, GNU ext
1645 argp_error NEW: argp, GNU ext
1646 argp_failure NEW: argp, GNU ext
1647 argp_help NEW: argp, GNU ext
1648 argp_parse NEW: argp, GNU ext
1649 argp_program_bug_address NEW: argp, GNU ext
1650 argp_program_version NEW: argp, GNU ext
1651 argp_program_version_hook NEW: argp, GNU ext
1652 argp_state_help NEW: argp, GNU ext
1653 argp_usage NEW: argp, GNU ext
1654 authdes_create NEW: Secure RPC
1655 authdes_getucred NEW: Secure RPC
1656 authdes_pk_create NEW: Secure RPC
1657 backtrace NEW: GNU ext.
1658 backtrace_symbols NEW: GNU ext.
1659 backtrace_symbols_fd NEW: GNU ext.
1661 cacosf NEW: ISO C 9x
1662 cacosh NEW: ISO C 9x
1663 cacoshf NEW: ISO C 9x
1664 cacoshl NEW: ISO C 9x
1665 cacosl NEW: ISO C 9x
1672 casinf NEW: ISO C 9x
1673 casinh NEW: ISO C 9x
1674 casinhf NEW: ISO C 9x
1675 casinhl NEW: ISO C 9x
1676 casinl NEW: ISO C 9x
1678 catanf NEW: ISO C 9x
1679 catanh NEW: ISO C 9x
1680 catanhf NEW: ISO C 9x
1681 catanhl NEW: ISO C 9x
1682 catanl NEW: ISO C 9x
1683 cbc_crypt NEW: Secure RPC
1687 ccoshf NEW: ISO C 9x
1688 ccoshl NEW: ISO C 9x
1694 cimagf NEW: ISO C 9x
1695 cimagl NEW: ISO C 9x
1696 clearerr_locked REMOVED
1697 clntunix_create NEW: sunrpc ext
1699 clog10 NEW: ISO C 9x
1700 clog10f NEW: ISO C 9x
1701 clog10l NEW: ISO C 9x
1711 cprojf NEW: ISO C 9x
1712 cprojl NEW: ISO C 9x
1714 crealf NEW: ISO C 9x
1715 creall NEW: ISO C 9x
1720 csinhf NEW: ISO C 9x
1721 csinhl NEW: ISO C 9x
1724 csqrtf NEW: ISO C 9x
1725 csqrtl NEW: ISO C 9x
1729 ctanhf NEW: ISO C 9x
1730 ctanhl NEW: ISO C 9x
1732 des_setparity NEW: Secure RPC
1733 ecb_crypt NEW: Secure RPC
1734 endutxent NEW: Unix98
1736 exp10f NEW: ISO C 9x
1737 exp10l NEW: ISO C 9x
1741 fattach NEW: STREAMS
1742 fdetach NEW: STREAMS
1746 feclearexcept NEW: ISO C 9x
1747 fegetenv NEW: ISO C 9x
1748 fegetexceptflag NEW: ISO C 9x
1749 fegetround NEW: ISO C 9x
1750 feholdexcept NEW: ISO C 9x
1752 feraiseexcept NEW: ISO C 9x
1753 ferror_locked REMOVED
1754 fesetenv NEW: ISO C 9x
1755 fesetexceptflag NEW: ISO C 9x
1756 fesetround NEW: ISO C 9x
1757 fetestexcept NEW: ISO C 9x
1758 feupdateenv NEW: ISO C 9x
1759 fflush_locked REMOVED
1763 fgets_unlocked NEW: GNU ext.
1764 fileno_locked REMOVED
1776 fputc_locked REMOVED
1777 fputs_unlocked NEW: GNU ext.
1778 fread_unlocked NEW: GNU ext.
1783 fstatvfs NEW: Unix98
1787 ftruncate64 NEW: LFS
1789 fwrite_unlocked NEW: GNU ext.
1790 gai_strerror NEW: IPv6
1794 getchar_locked REMOVED
1796 getdate_err NEW: Unix98
1797 getdate_r NEW: GNU ext.
1799 getnameinfo NEW: IPv6
1800 getnetname NEW: Secure RPC
1801 getpmsg NEW: STREAMS
1802 getpt NEW: Unix98 PTY
1803 getrlimit64 NEW: LFS
1804 getutxent NEW: Unix98
1805 getutxid NEW: Unix98
1806 getutxline NEW: Unix98
1807 glob64 NEW: GNU ext.
1808 globfree64 NEW: GNU ext.
1809 gnu_get_libc_release NEW: GNU ext.
1810 gnu_get_libc_version NEW: GNU ext.
1811 grantpt NEW: Unix98 PTY
1812 host2netname NEW: Secure RPC
1814 iconv_close NEW: iconv
1815 iconv_open NEW: iconv
1816 if_freenameindex NEW: IPv6
1817 if_indextoname NEW: IPv6
1818 if_nameindex NEW: IPv6
1819 if_nametoindex NEW: IPv6
1820 in6addr_any NEW: IPv6
1821 in6addr_loopback NEW: IPv6
1822 inet6_isipv4mapped NEW: IPv6
1823 isastream NEW: STREAMS
1824 iswblank NEW: GNU ext.
1825 key_decryptsession NEW: Secure RPC
1826 key_decryptsession_pk NEW: Secure RPC
1827 key_encryptsession NEW: Secure RPC
1828 key_encryptsession_pk NEW: Secure RPC
1829 key_gendes NEW: Secure RPC
1830 key_get_conv NEW: Secure RPC
1831 key_secretkey_is_set NEW: Secure RPC
1832 key_setnet NEW: Secure RPC
1833 key_setsecret NEW: Secure RPC
1834 llrint NEW: ISO C 9x
1835 llrintf NEW: ISO C 9x
1836 llrintl NEW: ISO C 9x
1837 llround NEW: ISO C 9x
1838 llroundf NEW: ISO C 9x
1839 llroundl NEW: ISO C 9x
1844 lrintf NEW: ISO C 9x
1845 lrintl NEW: ISO C 9x
1846 lround NEW: ISO C 9x
1847 lroundf NEW: ISO C 9x
1848 lroundl NEW: ISO C 9x
1850 makecontext NEW: Unix98
1851 mempcpy NEW: GNU ext.
1854 modify_ldt NEW: kernel
1858 nearbyint NEW: ISO C 9x
1859 nearbyintf NEW: ISO C 9x
1860 nearbyintl NEW: ISO C 9x
1861 netname2host NEW: Secure RPC
1862 netname2user NEW: Secure RPC
1863 nexttoward NEW: ISO C 9x
1864 nexttowardf NEW: ISO C 9x
1865 nexttowardl NEW: ISO C 9x
1869 passwd2des NEW: Secure RPC
1871 pow10f NEW: GNU ext.
1872 pow10l NEW: GNU ext.
1875 printf_size NEW: GNU ext.
1876 printf_size_info NEW: GNU ext.
1877 profil_counter REMOVED
1878 pthread_mutexattr_getkind_np REPLACED
1879 pthread_mutexattr_setkind_np REPLACED
1880 ptsname NEW: Unix98 PTY
1881 ptsname_r NEW: Unix98 PTY
1883 putchar_locked REMOVED
1884 putgrent NEW: GNU ext.
1886 putpmsg NEW: STREAMS
1887 pututxline NEW: Unix98
1891 readdir64_r NEW: LFS
1892 remquo NEW: ISO C 9x
1893 remquof NEW: ISO C 9x
1894 remquol NEW: ISO C 9x
1896 roundf NEW: ISO C 9x
1897 roundl NEW: ISO C 9x
1899 scalbln NEW: ISO C 9x
1900 scalblnf NEW: ISO C 9x
1901 scalblnl NEW: ISO C 9x
1903 sendfile NEW: kernel
1904 setcontext NEW: Unix98
1905 setrlimit64 NEW: LFS
1906 setutxent NEW: Unix98
1908 sigignore NEW: Unix98
1909 sigqueue NEW: POSIX.1b
1910 sigrelse NEW: Unix98
1911 sigset NEW: POSIX.1b
1912 sigtimedwait NEW: POSIX.1b
1913 sigwaitinfo NEW: POSIX.1b
1914 sincos NEW: GNU ext.
1915 sincosf NEW: GNU ext.
1916 sincosl NEW: GNU ext.
1920 strcasestr NEW: GNU ext.
1921 strtoimax NEW: ISO C 9x
1922 strtoumax NEW: ISO C 9x
1923 strverscmp NEW: GNU ext.
1924 svcauthdes_stats NEW: Secure RPC
1925 svcunix_create NEW: sunrpc etx
1926 svcunixfd_create NEW: sunrpc ext
1927 swapcontext NEW: Unix98
1928 tcgetsid NEW: Unix98 PTY
1929 tdestroy NEW: GNU ext.
1930 tgamma NEW: ISO C 9x
1931 tgammaf NEW: ISO C 9x
1932 tgammal NEW: ISO C 9x
1936 truncf NEW: ISO C 9x
1937 truncl NEW: ISO C 9x
1939 unlockpt NEW: Unix98 PTY
1940 updwtmpx NEW: Unix98
1941 user2netname NEW: Secure RPC
1942 utmpxname NEW: Unix98
1943 versionsort NEW: GNU ext.
1944 versionsort64 NEW: GNU ext.
1946 wcscasecmp NEW: GNU ext.
1947 wcsncasecmp NEW: GNU ext.
1948 wcsnlen NEW: GNU ext.
1949 wcstoimax NEW: ISO C 9x
1950 wcstoll NEW: ISO C 9x
1951 wcstoull NEW: ISO C 9x
1952 wcstoumax NEW: ISO C 9x
1954 wordexp NEW: POSIX.2
1955 wordfree NEW: POSIX.2
1956 write_profiling REMOVED
1957 xdecrypt NEW: Secure RPC
1958 xdr_authdes_cred NEW: Secure RPC
1959 xdr_authdes_verf NEW: Secure RPC
1960 xdr_cryptkeyarg NEW: Secure RPC
1961 xdr_cryptkeyarg2 NEW: Secure RPC
1962 xdr_cryptkeyres NEW: Secure RPC
1963 xdr_getcredres NEW: Secure RPC
1964 xdr_key_netstarg NEW: Secure RPC
1965 xdr_key_netstres NEW: Secure RPC
1966 xdr_keybuf NEW: Secure RPC
1967 xdr_keystatus NEW: Secure RPC
1968 xdr_netnamestr NEW: Secure RPC
1969 xdr_sizeof NEW: Secure RPC
1970 xdr_unixcred NEW: sunrpc ext
1971 xencrypt NEW: Secure RPC
1972 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1983 * inet_ntoa is thread-safe
1985 * updwtmp is moved from libutil to libc
1987 * rewrite of cbrt function
1989 * update of timezone data
2003 * add atoll function
2005 * fix complex problems in Berkeley DB code
2007 * fix math functions
2011 * fixed lots of header problems (especially Linux/GNU specific)
2013 * dynamic loader preserves all registers
2015 * Roland McGrath provided support for handling of auxiliary objects in
2016 the ELF dynamic loader.
2018 * support for parallel builds is improved
2022 * GNU extensions are no longer declared by default. To enable them you
2023 must define the macro `_GNU_SOURCE' in your program or compile with
2026 * The library has changed from using GNU ld symbol aliases to using weak
2027 symbols where available. The ELF object file format supports weak
2028 symbols; GNU ld also supports weak symbols in the a.out format. (There
2029 is also now support for other GNU ld extensions in ELF. Use the
2030 `--with-elf' option to configure to indicate you have ELF, and
2031 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
2032 of many files which contained only symbol aliases, reducing the size of
2033 the source and the compiled library; many other files were renamed to
2034 less cryptic names previously occupied by the symbol alias files.
2035 There is a new header file <elf.h> for programs which operate on
2036 files in the ELF format.
2038 * Converted to Autoconf version 2, so `configure' has more options.
2039 Run `configure --help' to see the details.
2041 * The library can now be configured to build profiling, highly-optimized
2042 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
2043 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
2044 `configure' enable building these extra libraries. The shared library is
2045 built by default when using both ELF and GNU ld. When shared libraries
2046 are enabled, the new library `-ldl' is available for arbitrary run-time
2047 loading of shared objects; its interface is defined in <dlfcn.h>. The
2048 new header file <link.h> gives access to the internals of the run-time
2049 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
2050 application of same name on other systems and it provides information
2051 about dynamically linked binaries.
2053 * The C library now provides the run-time support code for profiling
2054 executables compiled with `-pg'. Programs can control the profiling code
2055 through the interface in <sys/gmon.h>. The `gmon.out' files written by
2056 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
2057 the support for this file format was contributed by David Mosberger-Tang.
2059 * The math code has been replaced with a math library based on fdlibm from
2060 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
2061 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
2062 functions. The math functions now reside in a separate library, so
2063 programs using them will need to use `-lm' their linking commands.
2065 * John C. Bowman contributed optimized ix87 assembler inline functions.
2067 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2068 mechanism similar to that found in Solaris 2. This is now used for the
2069 group, passwd, hosts, networks, services, protocols, rpc, ethers,
2070 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
2071 file controls what services are used for each individual database. This
2072 works by loading shared libraries with names specified in `nsswitch.conf',
2073 so service modules can be changed or added at any time without even
2074 relinking any program. Currently there are the file, db, and NIS based
2075 NSS services available.
2077 * The new functions `strtoq' and `strtouq' parse integer values from
2078 strings, like `strtol' and `strtoul', but they return `long long int' and
2079 `unsigned long long int' values, respectively (64-bit quantities).
2081 * The new functions `strtof' and `strtold' parse floating-point values from
2082 strings, like `strtod', but they return `float' and `long double' values,
2083 respectively (on some machines `double' and `long double' are the same).
2085 * Ulrich Drepper has contributed new implementations of the floating-point
2086 printing and reading code used in the `printf' family of functions and
2087 `strtod', `strtof', and `strtold'. These new functions are perfectly
2088 accurate, and much faster than the old ones.
2090 * The implementation of the POSIX locale model was completely rewritten by
2091 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2092 to compile the POSIX locale definition.
2094 * The former dummy implementations of the strcoll and strxfrm function are
2095 now replaced by fully functional code contributed by Ulrich Drepper. The
2096 collation information comes from the POSIX locale definitions.
2098 * The new header <langinfo.h> defines an interface for accessing
2099 various locale-dependent data (using the locale chosen with `setlocale').
2101 * Ulrich Drepper has contributed a new suite of functions for operation on
2102 wide-character and multibyte-character strings, in <wchar.h>;
2103 and classification and case conversion of wide characters, in <wctype.h>.
2104 These new functions are conforming to the ISO C, Amendement 1 specification.
2106 * There is now a second implementation of the standard I/O library available.
2107 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2108 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2110 * You can now use positional parameter specifications in format strings
2111 for the `printf' and `scanf' families of functions. For example,
2112 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2113 ``Number 6, Mr Jones''. This is mainly useful when providing different
2114 format strings for different languages, whose grammars may dictate
2115 different orderings of the values being printed. To support this
2116 feature, the interface for `register_printf_handler' has changed; see
2117 the header file <printf.h> for details.
2119 * The `printf' and `scanf' families of functions now understand a new
2120 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2121 to group numbers as indicated by the locale; for `scanf' and friends, this
2122 says to accept as valid only a number with all the proper grouping
2123 separators in the right places. In the default "C" locale, numbers are
2124 not grouped; but locales for specific countries will define the usual
2125 conventions (i.e. separate thousands with `,' in the US locale).
2127 * The pgrp functions have been regularized, slightly incompatibly but much
2128 less confusingly. The core functions are now `getpgid' and `setpgid',
2129 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2130 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2131 provided for compatibility. There is no longer an incompatible `getpgrp'
2132 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2134 * The new header file <fts.h> and suite of functions simplify programs that
2135 operate on directory trees. This code comes from 4.4 BSD.
2137 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2138 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2139 NSS scheme used in glibc.
2141 * There is a new malloc debugging hook `__memalign_hook'.
2143 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2144 `unsigned int' in <sys/types.h>. These are for compatibility only and
2145 their use is discouraged.
2147 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2148 done differently, so that it works even without GNU ld.
2150 * New function `euidaccess' checks allowed access to a file like `access',
2151 but using the effective IDs instead of the real IDs.
2153 * The time zone data files have been updated for the latest and greatest
2154 local time conventions of the countries of the world.
2156 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2159 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2160 for formatting floating-point numbers. They are provided only for
2161 compatibility; new programs should use `sprintf' instead. There are
2162 also equivalent function for the `long double' floating-point type and
2163 all functions also exist in a reentrant form.
2165 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2166 functions for maintaining the login-record files (primarily of use to
2167 system programs such as `login'), and convenient functions for
2168 allocating and initializing a pseudo-terminal (pty) device.
2170 * Ulrich Drepper has contributed new support for System V style
2171 shared memory and IPC on systems that support it.
2173 * Ulrich Drepper has contributed several miscellaneous new functions found
2174 in System V: The `hsearch' family of functions provide an effective
2175 implementation of hash tables; `a64l' and `l64a' provide a very simple
2176 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2179 * Ulrich Drepper has contributed new reentrant counterparts for the
2180 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2182 * Ulrich Drepper has contributed new, highly-optimized versions of several
2183 string functions for the i486/Pentium family of processors.
2185 * Ulrich Drepper has updated the Linux-specific code, based largely
2186 on work done in Hongjiu Lu's version of GNU libc for Linux.
2187 The GNU library now supports Linux versions 2.0.10 and later,
2188 using the ELF object file format (i[3456]86-*-linux).
2190 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2192 * David Mosberger-Tang and Richard Henderson have ported the C library
2193 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2194 dynamic linking support for ELF/Alpha.
2196 * Richard Henderson contributed several Alpha optimized assembler function
2197 for arithmetic and string handling.
2199 * Ulrich Drepper has contributed a new set of message catalog functions to
2200 support multiple languages using the <libintl.h> interface, for use with
2201 his new package GNU gettext. Translation volunteers have contributed
2202 catalogs of the library's messages in Spanish, German, and Korean.
2204 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2205 program and the `catgets' function for reading the catalog files it
2206 creates. (The <libintl.h> interface is preferred; we include the
2207 <nl_types.h> interface using `catgets' only for source compatibility with
2208 programs already written to use it.)
2210 * New header file <values.h> gives SVID-compatible names for <limits.h>
2213 * Various new macros, declarations, and small header files for compatibility
2216 * New function `group_member' is a convenient way to check if a process has
2217 a given effective group ID.
2219 * When using GCC 2.7 and later, the socket functions are now declared in a
2220 special way so that passing an argument of type `struct sockaddr_in *',
2221 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2222 `struct sockaddr *' type, does not generate a type-clash warning.
2224 * New function `error' declared in header file <error.h> is a convenient
2225 function for printing error messages and optionally exiting; this is the
2226 canonical function used in GNU programs. The new functions `err', `warn',
2227 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2228 doing the same thing.
2230 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2231 POSIX.2 `glob' function to do ~ and {...} expansion.
2233 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2234 `clearenv' which is used in POSIX.9 is also available.
2236 * New function `getsid' returns session ID number on systems that support it.
2238 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2239 files <db.h> and <mpool.h> provide a rich set of functions for several
2240 types of simple databases stored in memory and in files, and <ndbm.h> is
2241 an old `ndbm'-compatible interface using the `db' functions. Link with
2242 `-ldb' to get these functions.
2244 * New macro `strdupa' copies a string like `strdup', but uses local stack
2245 space from `alloca' instead of dynamic heap space from `malloc'.
2247 * New function `strnlen' is like `strlen' but searches only a given maximum
2248 number of characters for the null terminator. `stpncpy', `strndup' and
2249 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2252 * New function `statfs' in header <sys/statfs.h>.
2254 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2255 provide convenient functions for operating on blocks of null-terminated
2258 * A new suite of functions in <utmp.h> handle all the details of reading
2259 and writing the utmp file.
2261 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2264 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2265 completely POSIX compliant and also implemented the extended functionality
2266 to handle alternate digit representation and alternate era date formats.
2268 * Ulrich Drepper provided an implementation of the `strptime' function
2269 defined in XPG4.2 which transforms a string into a `struct tm' value.
2271 * Paul Eggert provided the tzselect shell script as part of the timezone
2272 code. The shell script makes it easy to select the correct timezone
2275 * The implementation of the malloc family of functions is completely replaced
2276 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2277 The implementation uses the mmap function (if available) and it is
2278 optimized for the use in multi threaded programs.
2280 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2281 functions. This new functionality is usable by specifying a special
2282 salt string and it is compatible with implementation on *BSD systems.
2284 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2285 `getsubopt' to handle second level command line options, `bsd_signal'
2286 to access BSD style `signal' functionality, the obsolete `regexp' style
2289 * the `lchown' function is available on system which support this
2292 * The implementation of the shadow password handling function was contributed
2295 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2297 * POSIX.1g support was added. The <sys/select.h> header is available,
2298 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2299 implementation of `getaddrinfo'.
2303 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2305 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2306 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2308 * The new function `daemon' from 4.4 BSD is useful for server programs that
2309 want to put themselves in the background.
2311 * Joel Sherrill has contributed support for several standalone boards that
2312 run without an operating system.
2314 * `printf', `scanf' and friends now accept a `q' type modifier for long
2315 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2317 * All of the code taken from BSD (notably most of the math and networking
2318 routines) has been updated from the BSD 4.4-Lite release.
2320 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2322 * The new functions `getdomainname' and `setdomainname' fetch or change the
2323 YP/NIS domain name. These are system calls which exist on systems which
2326 * The time zone data files have been updated for the latest international
2329 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2330 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2334 * The C library now includes support for Sun RPC, from Sun's free
2335 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2336 are included. (There is still no support for YP.)
2338 * Tom Quinn has contributed a port of the C library to SGI machines running
2339 Irix 4 (mips-sgi-irix4).
2341 * The new `lockf' function is a simplified interface to the locking
2342 facilities of `fcntl', included for compatibility.
2344 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2346 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2348 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2351 * The error message printed by `assert' for a failed assertion now includes
2352 the name of the program (if using GNU ld) and the name of the calling
2353 function (with versions of GCC that support this).
2355 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2357 * The library now includes the <sys/mman.h> header file and memory
2358 management functions `mmap', `munmap', `mprotect', `msync', and
2359 `madvise', on systems that support those facilities.
2361 * The interface for `mcheck' has changed slightly: the function called to
2362 abort the program when an allocation inconsistency is detected now takes
2363 an argument that indicates the type of failure. The new function
2364 `mprobe' lets you request a consistency check for a particular block at
2365 any time (checks are normally done only when you call `free' or `realloc'
2368 * It is now possible to easily cross-compile the C library, building on one
2369 system a library to run on another machine and/or operating system. All
2370 you need to do is set the variable `HOST_CC' in `configparms' to the
2371 native compiler for programs to run on the machine you are building on (a
2372 few generator programs are used on Unix systems); set `CC' to the
2375 * The new function `fexecve' (only implemented on the GNU system) executes
2376 a program file given a file descriptor already open on the file.
2380 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2381 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2383 * You can set the variable `libprefix' in `configparms' to specify a prefix
2384 to be prepended to installed library files; this makes it easy to install
2385 the GNU C library to be linked as `-lgnuc' or whatever.
2387 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2388 copies a limited number of characters from a string, and returns the
2389 address of the last character written.
2391 * You no longer need to check for whether the installed `stddef.h' is
2392 compatible with the GNU C library. configure now checks for you.
2394 * You can now define a per-stream `fileno' function to convert the
2395 stream's cookie into an integral file descriptor.
2397 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2398 allocates zero bytes of storage, and returns a unique pointer which
2399 you can pass to `realloc' or `free'. The behavior is undefined if
2400 you dereference this pointer.
2402 * The C library now runs on Sony NEWS m68k machines running either
2403 NewsOS 3 or NewsOS 4.
2405 * The new `syscall' function is a system-dependent primitive function
2406 for invoking system calls. It has the canonical behavior on Unix
2407 systems, including unreliable return values for some calls (such as
2408 `pipe', `fork' and `getppid').
2410 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2411 to `EAGAIN', which is the preferred name. On systems whose kernels
2412 use two distinct codes, the C library now translates EWOULDBLOCK to
2413 EAGAIN in every system call function.
2417 * The GNU C Library Reference Manual is now distributed with the library.
2418 `make dvi' will produce a DVI file of the printed manual.
2419 `make info' will produce Info files that you can read on line using C-h i
2420 in Emacs or the `info' program.
2421 Please send comments on the manual to bug-glibc-manual@gnu.org.
2423 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2425 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2427 * Jason Merrill has contributed a port to the Sequent Symmetry running
2428 Dynix version 3 (i386-sequent-dynix).
2430 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2431 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2433 * New function `memory_warnings' lets you arrange to get warnings when
2434 malloc is running out of memory to allocate, like Emacs gives you.
2436 * The C library now contains the relocating allocator used in Emacs 19 for
2437 its editing buffers. This allocator (ralloc) minimizes allocation
2438 overhead and fragmentation by moving allocated regions around whenever it
2439 needs to. You always refer to a ralloc'd region with a "handle" (a
2440 pointer to a pointer--an object of type `void **').
2442 * There is a new `printf' format: `%m' gives you the string corresponding
2443 to the error code in `errno'.
2445 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2446 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2447 pass, the `a' modifier says to fill in a `char **' you pass with a
2450 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2451 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2452 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2454 * `mkstemp' is a traditional Unix function to atomically create and open a
2455 uniquely-named temporary file.
2459 * The standard location for the file that says what the local timezone is
2460 has changed again. It is now `/usr/local/etc/localtime' (or more
2461 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2463 * The distribution no longer contains any files with names longer than 14
2466 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2467 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2469 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2473 * The configuration process has changed quite a bit. The `configure'
2474 script is now used just like the configuration scripts for other GNU
2475 packages. The `sysdeps' directory hierarchy is much rearranged.
2476 The file `INSTALL' explains the new scheme in detail.
2478 * The header files no longer need to be processed into ANSI C and
2479 traditional C versions. There is just one set of files to install, and
2480 it will work with ANSI or old C compilers (including `gcc -traditional').
2482 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2483 MIPS DECStation running Ultrix 4.
2485 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2486 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2487 made itself into a shared library.
2489 * Yet further improved support for the i386, running 4.3 BSD-like systems
2490 (such as Mach 3 with the Unix single-server), or System V.
2492 * New function `strncasecmp' to do case-insensitive string comparison
2493 with limited length.
2495 * New function `strsep' is a reentrant alternative to `strtok'.
2497 * New functions `scandir' and `alphasort' for searching directories.
2499 * New function `setenv' is a better interface to `putenv'.
2501 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2502 function for traversing a directory tree.
2504 * The GNU obstack package is now also part of the C library.
2505 The new function `open_obstack_stream' creates a stdio stream that
2506 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2507 formatted output directly to an obstack.
2509 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2510 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2512 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2514 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2515 things to your strings.
2517 * There are some new test programs: test-fseek, testmb, and testrand.
2519 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2520 These ports are not finished, but are a good starting place for really
2521 supporting those systems.
2523 * `/etc/localtime' is now the standard location for the file that says what
2524 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2525 This follows the general principle that `/etc' is the place for all local
2526 configuration files.
2528 * The C library header files now use `extern "C"' when used by the C++
2529 compiler, so the C library should now work with C++ code.
2531 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2532 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2535 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2536 function which uses the `merge sort' algorithm, and is said to be
2537 significantly faster than the old GNU `qsort' function. Merge sort is
2538 now the standard `qsort' function. The new algorithm can require a lot
2539 of temporary storage; so, the old sorting function is called when the
2540 required storage is not available.
2542 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2543 provides the Unix `crypt' function, plus some other entry points.
2545 * The code and header files taken from 4.4 BSD have been updated with the
2546 latest files released from Berkeley.
2548 ----------------------------------------------------------------------
2549 Copyright information:
2551 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2553 Permission is granted to anyone to make or distribute verbatim copies
2554 of this document as received, in any medium, provided that the
2555 copyright notice and this permission notice are preserved,
2556 thus giving the recipient permission to redistribute in turn.
2558 Permission is granted to distribute modified versions
2559 of this document, or of portions of it,
2560 under the above conditions, provided also that they
2561 carry prominent notices stating who last changed them.
2564 version-control: never
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