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, 14132, 14138, 14171, 15215, 15884, 17266, 17344, 17363,
13 17370, 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522,
14 17555, 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585,
15 17589, 17594, 17616, 17625.
17 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
18 under certain input conditions resulting in the execution of a shell for
19 command substitution when the applicaiton did not request it. The
20 implementation now checks WRDE_NOCMD immediately before executing the
21 shell and returns the error WRDE_CMDSUB as expected.
23 * The minimum GCC version that can be used to build this version of the GNU
24 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
25 still be used to compile programs using the GNU C Library.
27 * New locales: tu_IN, bh_IN.
29 * The obsolete sigvec function has been removed. This was the original
30 4.2BSD interface that inspired the POSIX.1 sigaction interface, which
31 programs have been using instead for about 25 years. Of course, ABI
32 compatibility for old binaries using sigvec remains intact.
36 * The following bugs are resolved with this release:
38 6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347, 15514,
39 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198, 16275,
40 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447, 16516,
41 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600, 16609,
42 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639, 16642,
43 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689, 16695,
44 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739, 16740,
45 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791, 16796,
46 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849, 16854,
47 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912, 16915,
48 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958, 16965,
49 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022, 17031,
50 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078, 17079,
51 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150, 17153,
52 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
54 * Optimized strchrnul implementation for AArch64. Contributed by ARM Ltd.
56 * Reverted change of ABI data structures for s390 and s390x:
57 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
58 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
59 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
60 are preserved pointing straight to the same implementation as the old ones.
61 Given that, new callers will simply provide a too-big buffer to these
62 functions. Any applications/libraries out there that embed jmp_buf or
63 ucontext_t in an ABI-relevant data structure that have already been rebuilt
64 against 2.19 headers will have to rebuilt again. This is necessary in any
65 case to revert the breakage in their ABI caused by the glibc change.
67 * Support for file description locks is added to systems running the
68 Linux kernel. The standard file locking interfaces are extended to
69 operate on file descriptions, not file descriptors, via the use of
70 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
71 are associated with an open file instead of a process.
73 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
75 * The minimum Linux kernel version that this version of the GNU C Library
76 can be used with is 2.6.32.
78 * Running the testsuite no longer terminates as soon as a test fails.
79 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
80 with PASS or FAIL lines for individual tests. A summary of the results is
81 printed, including a list of failing lists, and "make check" exits with
82 error status if there were any unexpected failures. "make check
83 stop-on-test-failure=y" may be used to keep the old behavior.
85 * The am33 port, which had not worked for several years, has been removed
88 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
89 supported; they now act the same as _DEFAULT_SOURCE (but generate a
90 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
91 conflicted with POSIX (support for which was removed in 2.19), the
92 interfaces those macros enabled remain available when compiling with
93 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
96 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
98 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
99 This may improve lock scaling of existing programs on TX capable systems.
100 The lock elision code is only built with --enable-lock-elision=yes and
101 then requires a GCC version supporting the TX builtins. With lock elision
102 default mutexes are elided via __builtin_tbegin, if the cpu supports
103 transactions. By default lock elision is not enabled and the elision code
106 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
107 copy the path argument. This allowed programs to cause posix_spawn to
108 deference a dangling pointer, or use an unexpected pathname argument if
109 the string was modified after the posix_spawn_file_actions_addopen
112 * All supported architectures now use the main glibc sysdeps directory
113 instead of some being in a separate "ports" directory (which was
114 distributed separately before glibc 2.17).
116 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
117 On configurations that support it (all Linux configurations), it's now
118 used regardless of the --enable-add-ons switch to configure. It is no
119 longer possible to build such configurations without pthreads support.
121 * Locale names, including those obtained from environment variables (LANG
122 and the LC_* variables), are more tightly checked for proper syntax.
123 setlocale will now fail (with EINVAL) for locale names that are overly
124 long, contain slashes without starting with a slash, or contain ".." path
125 components. (CVE-2014-0475) Previously, some valid locale names were
126 silently replaced with the "C" locale when running in AT_SECURE mode
127 (e.g., in a SUID program). This is no longer necessary because of the
130 * On x86-64, the dynamic linker's lazy-binding support is now compatible
131 with application code using Intel MPX instructions. (With all previous
132 versions, the MPX register state could be clobbered when making calls
133 into or out of a shared library.) Note that while the new dynamic
134 linker is compatible with all known x86 hardware whether or not it
135 supports Intel MPX, some x86 instruction-set emulators might fail to
136 handle the new instruction encodings. This is known to affect Valgrind
137 versions up through 3.9 (but will be fixed in the forthcoming 3.10
138 release), and might affect other tools that do instruction emulation.
140 * Support for loadable gconv transliteration modules has been removed.
141 The support for transliteration modules has been non-functional for
142 over a decade, and the removal is prompted by security defects. The
143 normal gconv conversion modules are still supported. Transliteration
144 with //TRANSLIT is still possible, and the //IGNORE specifier
145 continues to be supported. (CVE-2014-5119)
147 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
148 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
149 resulting a denial-of-service security vulnerability in applications which
150 use functions related to iconv. (CVE-2014-6040)
154 * The following bugs are resolved with this release:
156 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
157 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
158 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
159 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
160 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
161 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
162 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
163 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
164 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
165 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
166 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
167 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
168 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
169 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
170 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
171 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
172 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
173 16431, 16453, 16474, 16506, 16510, 16529
175 * Slovenian translations for glibc messages have been contributed by the
176 Translation Project's Slovenian team of translators.
178 * The public headers no longer use __unused nor __block. This change is to
179 support compiling programs that are derived from BSD sources and use
180 __unused internally, and to support compiling with Clang's -fblock
181 extension which uses __block.
183 * CVE-2012-4412 The strcoll implementation caches indices and rules for
184 large collation sequences to optimize multiple passes. This cache
185 computation may overflow for large collation sequences and may cause a
186 stack or buffer overflow. This is now fixed to use a slower algorithm
187 which does not use a cache if there is an integer overflow.
189 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
190 rules for large collation sequences to optimize multiple passes and falls
191 back to alloca if malloc fails, resulting in a possible stack overflow.
192 The implementation now falls back to an uncached collation sequence lookup
195 * CVE-2013-4788 The pointer guard used for pointer mangling was not
196 initialized for static applications resulting in the security feature
197 being disabled. The pointer guard is now correctly initialized to a
198 random value for static applications. Existing static applications need
199 to be recompiled to take advantage of the fix (bug 15754).
201 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
202 to the d_name member of struct dirent, or omit the terminating NUL
203 character. (Bugzilla #14699).
205 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
206 aligned_alloc functions could allocate too few bytes or corrupt the
207 heap when passed very large allocation size values (Bugzilla #15855,
210 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
211 for AF_INET6 has been fixed (Bugzilla #16072).
213 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
214 pap_CW, quz_PE, the_NP.
216 * Substantially revised locales: gd_GB, ht_HT
218 * The LC_ADDRESS field was updated to support country_car for almost all
221 * ISO 1427 definitions were updated.
223 * ISO 3166 definitions were updated.
225 * The localedef utility now supports --big-endian and --little-endian
226 command-line options to generate locales for a different system from that
227 for which the C library was built.
229 * Binary locale files now only depend on the endianness of the system for
230 which they are generated and not on other properties of that system. As a
231 consequence, binary files generated with new localedef may be incompatible
232 with old versions of the GNU C Library, and binary files generated with
233 old localedef may be incompatible with this version of the GNU C Library,
234 in the following circumstances:
236 + Locale files may be incompatible on m68k systems.
238 + Locale archive files (but not separate files for individual locales) may
239 be incompatible on systems where plain "char" is signed.
241 * The configure option --disable-versioning has been removed. Builds with
242 --disable-versioning had not worked for several years.
244 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
245 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
247 * SystemTap probes for malloc have been introduced.
249 * SystemTap probes for slow multiple precision fallback paths of
250 transcendental functions have been introduced.
252 * Support for powerpc64le has been added.
254 * The soft-float powerpc port now supports e500 processors.
256 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
258 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
259 set of header declarations that are enabled by default, even when other
260 feature test macros or compiler options such as -std=c99 would otherwise
261 disable some of those declarations.
263 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
264 conflict with POSIX. The libbsd-compat library (which was a dummy library
265 that did nothing) has also been removed.
267 * Preliminary documentation about Multi-Thread, Async-Signal and
268 Async-Cancel Safety has been added.
270 * Change of ABI data structures for s390 and s390x:
271 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
272 allow for future hardware extensions. All library functions that accept or
273 return these structures were versioned in order to provide backwards
274 compatibility with existing code. However, not all cases can be handled
275 with interface versioning. If an application embeds either structure into
276 another structure and that structure is passed to another compilation unit
277 which expects the newer larger-sized object then any access to the new
278 fields will result in undefined behaviour. Similarly any access to fields
279 that were moved by the enlarging of the structures will cause undefined
280 behaviour. To fix the undefined behaviour all objects that are part of the
281 final in-memory image must agree on the size of structures, and this may
282 require recompilation.
286 * The following bugs are resolved with this release:
288 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
289 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
290 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
291 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
292 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
293 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
294 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
295 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
296 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
297 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
298 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
299 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
300 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
303 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
304 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
305 Distributions can re-enable building and using pt_chown via the new configure
306 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
307 considerable security risks and should only be used if the distribution
308 understands and accepts the risks.
310 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
313 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
314 fixed (Bugzilla #15330).
316 * Add support for calling C++11 thread_local object destructors on thread
317 and program exit. This needs compiler support for offloading C++11
318 destructor calls to glibc.
320 * Improved worst case performance of libm functions with double inputs and
323 * Support for priority inherited mutexes in pthread condition variables on
324 non-x86 architectures.
326 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
328 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
330 * Optimized string functions for ARM. Implemented by Will Newton and
333 * Optimized libm functions for SPARC. Implemented by David S. Miller.
335 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
338 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
339 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
341 * Added a benchmark framework to track performance of functions in glibc.
343 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
344 It is based on draft TS 18661 and currently enabled as a GNU extension.
346 * On Linux, the clock function now uses the clock_gettime system call
347 for improved precision, rather than old times system call.
349 * Added support for version-3 tz format files. This is needed when using
350 the tz database release 2013e or later, and affects a few unusual cases --
351 currently only TZ='America/Godthab' for time stamps after 2037.
353 * Added new API functions pthread_getattr_default_np and
354 pthread_setattr_default_np to get and set the default pthread
355 attributes of a process.
357 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
358 This may improve lock scaling of existing programs on TSX capable systems.
359 When the --enable-lock-elision=yes parameter is specified at configure
360 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
363 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
364 availability). Implemented by Ryan S. Arnold.
366 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
370 * The following bugs are resolved with this release:
372 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
373 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
374 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
375 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
376 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
377 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
378 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
379 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
380 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
381 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
382 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
383 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
384 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
385 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
386 14879, 14889, 14893, 14898, 14914.
388 * Optimization of memcpy for MIPS.
390 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
391 EMFILE has been fixed (Bugzilla #14889).
393 * The add-on ports collection is now distributed in the "ports" subdirectory
394 of the main GNU C Library distribution, rather than separately.
396 * Port to ARM AArch64 contributed by Linaro.
398 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
399 Optimized versions of memcpy, memset, and memcmp added for System z10 and
401 Implemented by Andreas Krebbel.
403 * The new function secure_getenv allows secure access to the environment,
404 returning NULL if running in a SUID/SGID process. This function replaces
405 the internal function __secure_getenv.
407 * SystemTap static probes have been added into the dynamic linker.
408 Implemented by Gary Benson.
410 * Optimizations of string functions strstr, strcasestr and memmem.
411 Implemented by Maxim Kuvyrkov.
413 * The minimum Linux kernel version that this version of the GNU C Library
414 can be used with is 2.6.16.
416 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
417 powerpc POWER7. Implemented by Will Schmidt.
419 * New configure option --disable-nscd builds the C library such that it
420 never attempts to contact the Name Service Caching Daemon (nscd).
421 New configure option --disable-build-nscd avoids building nscd itself;
422 this is the default if --disable-nscd is used.
424 * Improved support for cross-compilation, including cross-testing and
425 bootstrap builds without a previously built glibc.
427 * Several testsuite tests are now able to test multiple IFUNC variants of an
428 interface, rather than just testing the one that would be chooen by
431 * New configure options --with-bugurl and --with-pkgversion, for
432 distributors to use to embed their bug-reporting and package version
433 information in --help and --version output.
435 * The ttyname and ttyname_r functions on Linux now fall back to searching for
436 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
437 allows creation of chroots without the procfs mounted on /proc.
439 * The `crypt' function now fails if passed salt bytes that violate the
440 specification for those values. On Linux, the `crypt' function will
441 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
442 enabled, and fail on encrypted strings using the MD5 or DES algorithm
443 when the mode is enabled.
445 * The `clock_*' suite of functions (declared in <time.h>) is now available
446 directly in the main C library. Previously it was necessary to link with
447 -lrt to use these functions. This change has the effect that a
448 single-threaded program that uses a function such as `clock_gettime' (and
449 is not linked with -lrt) will no longer implicitly load the pthreads
450 library at runtime and so will not suffer the overheads associated with
451 multi-thread support in other code such as the C++ runtime library.
453 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
458 * The following bugs are resolved with this release:
460 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
461 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
462 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
463 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
464 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
465 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
466 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
467 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
468 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
469 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
470 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
471 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
472 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
473 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
474 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
475 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
476 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
477 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
478 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
479 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
480 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
481 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
484 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
485 configuring glibc with:
486 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
487 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
488 Implemented by H.J. Lu.
492 + define static_assert
494 + do not declare gets
496 + declare at_quick_exit and quick_exit also for ISO C11
498 + aligned_alloc. NB: The code is deliberately allows the size parameter
499 to not be a multiple of the alignment. This is a moronic requirement
500 in the standard but it is only a requirement on the caller, not the
505 + uchar.h support added
507 + CMPLX, CMPLXF, CMPLXL added
509 Implemented by Ulrich Drepper.
511 * Support for the IA-64 has been moved to ports.
513 * Remove support for anything but ELF binary format
515 * Checking versions of poll, ppoll added.
516 Implemented by Ulrich Drepper.
518 * More generic and 64-bit performance optimizations to math functions.
519 Implemented by Ulrich Drepper.
521 * New configure option --enable-obsolete-rpc makes the deprecated RPC
522 headers and functions available at compile time as they were before
523 version 2.14. This option will be removed at some time in the future
524 after the TI-RPC library becomes fully sufficient for the needs of
525 existing applications.
527 * Compatibility code for Linux kernel versions before 2.4 has been removed.
528 Note that glibc is not expected to work with any Linux kernel version
531 * New header <sys/auxv.h> and function getauxval allowing easy access to
532 the AT_* key-value pairs passed from the Linux kernel. The header also
533 defines the HWCAP_* bits associated with the AT_HWCAP key.
535 * New locales: mag_IN
537 * New configure option --enable-systemtap builds SystemTap static probes
538 into libc for setjmp and longjmp and into libpthread for various operations.
539 So far the setjmp/longjmp probes and some of the libpthread probes are
540 provided only for i*86 and x86_64.
541 Implemented by Roland McGrath and Rayson Ho.
543 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
545 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
548 * More optimized functions for SPARC. Implemented by David S. Miller.
550 * Improved support for cross-compilation, especially bootstrap builds
551 without a previously built glibc.
553 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
554 Chris Metcalf from Tilera.
556 * Support for the old ARM ABI has been removed from ports. Only the EABI is
557 now supported for ARM processors.
559 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
560 as the name of the dynamic linker, to distinguish it from the
561 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
563 * Support for CRIS has been removed from ports.
565 * A new class of installed header has been documented for low-level
566 platform-specific functionality. PowerPC added the first instance with a
567 function to provide time base register access. Contributed by Tulio
568 Magno Quites Machado Filho.
570 * ix86 configurations now install header files that are consistent with
571 what x86-64 configurations install. These same header files can be used
572 for -m32, -m64, or -mx32 builds.
573 Contributed by H.J. Lu.
575 * Math library bug fixes. A thorough audit of all open math library bugs was
576 conducted by Joseph Myers. Significant progress was made on many math
577 library bugs resulting in more accurate exceptions and function results.
578 Many thanks to all those that contributed including Andreas Jaeger for his
579 patch review and work on the x87 trigonometric instruction issues.
581 * Timezone data is no longer installed. Timezone-related binaries and scripts
582 will continue to be installed. Users should obtain their timezone data from
583 their distribution provider or from the tzdata package at
584 <ftp://munnari.oz.au/pub/>.
588 * The following bugs are resolved with this release:
590 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
591 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
592 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
593 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
594 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
595 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
596 13484, 13506, 13515, 13523, 13524, 13538, 13540
598 * New program pldd to list loaded object of a process
599 Implemented by Ulrich Drepper.
601 * Add nss_db support back to glibc. No more dependency on Berkeley db
602 and support for initgroups lookups.
603 Implemented by Ulrich Drepper.
605 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
606 Contributed by HJ Lu.
608 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
609 Contributed by HJ Lu.
611 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
612 on x86-32 and x86-64.
613 Contributed by Liubov Dmitrieva.
615 * Optimized strchr and strrchr for SSE on x86-32.
616 Contributed by Liubov Dmitrieva.
618 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
619 for x86-64 and x86-32.
620 Contributed by Liubov Dmitrieva.
622 * New interfaces: scandirat, scandirat64
623 Implemented by Ulrich Drepper.
625 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
626 Implemented by Ulrich Drepper.
628 * nscd now also caches the netgroup database.
629 Implemented by Ulrich Drepper.
631 * Integrate libm with gcc's -ffinite-math-only option.
632 Implemented by Ulrich Drepper.
634 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
635 to math functions. Implemented by Ulrich Drepper.
637 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
638 Implemented by Ulrich Drepper.
640 * New Linux interfaces: process_vm_readv, process_vm_writev
642 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
643 Implemented by Ulrich Drepper.
645 * Optimized nearbyint and strcasecmp for PPC.
646 Implemented by Adhemerval Zanella.
648 * New locales: bho_IN, unm_US, es_CU, ta_LK
652 * The following bugs are resolved with this release:
654 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
655 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
656 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
657 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
658 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
659 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
660 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
661 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
662 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
663 12795, 12811, 12813, 12814, 12841
665 * The RPC implementation in libc is obsoleted. Old programs keep working
666 but new programs cannot be linked with the routines in libc anymore.
667 Programs in need of RPC functionality must be linked against TI-RPC.
668 The TI-RPC implementation is IPv6 enabled and there are other benefits.
670 Visible changes of this change include (obviously) the inability to link
671 programs using RPC functions without referencing the TI-RPC library and the
672 removal of the RPC headers from the glibc headers.
673 Implemented by Ulrich Drepper.
675 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
676 syncfs, setns, sendmmsg
678 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
679 yue_HK, lij_IT, mhr_RU
681 * New encodings: CP770, CP771, CP772, CP773, CP774
683 * New program sotruss to trace calls through PLTs
684 Implemented by Ulrich Drepper.
686 * The malloc hook implementation is marked deprecated and will be removed
687 from the default implementation in the next version. The design never
688 worked ever since the introduction of threads. Even programs which do
689 not create threads themselves can use multiple threads created internally.
693 * The following bugs are resolved with this release:
695 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
696 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
697 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
698 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
701 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
703 * POWER7 optimizations: memset, memcmp, strncmp
705 * New optimized string functions for x86-64: strnlen (SSE2),
706 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
707 Implemented by Ulrich Drepper.
711 * The following bugs are resolved with this release:
713 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
714 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
715 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
716 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
717 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
718 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
719 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
720 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
722 * New interfaces: pthread_getname_np, pthread_setname_np
724 * New Linux interface: recvmmsg
726 * STT_GNU_IFUNC implemented for Sparc by David Miller.
728 * The dynamic linker now recognizes supported ABI versions from the
729 EI_ABIVERSION field in the ELF header.
730 Implemented by Ulrich Drepper.
732 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
733 will not be used to fill in password fields in the passwd.byname replies.
734 Instead it is used to synthesize the shadow.byname table, should it be
735 missing. This is a useful mode in some installations involving Solaris.
736 Implemented by Ulrich Drepper.
738 * New locales: kok_IN, sq_MK, cv_RU
742 * The following bugs are resolved with this release:
744 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
745 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
746 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
747 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
748 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
749 10789, 10817, 10823, 10840, 10847
751 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
753 Implemented by Ulrich Drepper.
755 * Checking version of longjmp added that fails if an uninitialized stack
756 frame would be created. Implemented by Ulrich Drepper.
758 * STT_GNU_IFUNC is now supported in static executables.
759 Implemented by H.J. Lu.
761 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
763 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
764 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
765 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
766 Contributed by H.J. Lu.
768 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
769 Implemented by Ulrich Drepper.
771 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
773 Contributed by H.J. Lu.
775 * Support for fma instruction in AVX on x86-64.
776 Implemented by H.J. Lu and Ulrich Drepper.
778 * AVX support in x86-64 auditing support in ld.so.
779 Implemented by H.J. Lu.
781 * STB_GNU_UNIQUE support added.
782 Implemented by Ulrich Drepper.
784 * Implement second fallback mode for optimized DNS lookup for even more
785 broken environments. If two requests from the same port are not
786 handled correctly close the socket and open a new one before sending
787 the second request. The 'single-request-reopen' option in /etc/resolv.conf
788 can be used to select this mode right away, instead of rediscovering the
789 necessity is every process again.
790 Implemented by Ulrich Drepper.
792 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
793 Implemented by Adam Tkac.
795 * Optimized iconv conversions for S390x.
796 Implemented by Andreas Krebbel.
798 * Using condvars with PI mutexes is now more efficient due to kernel
799 support for requeueing to PI futexes. NPTL support added for x86-64.
800 Implemented by Ulrich Drepper.
802 * New locales: ps_AF, my_MM
806 * The following bugs are resolved with this release:
808 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
809 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
810 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
811 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
812 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
814 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
815 Implemented by Ulrich Drepper.
817 * New Linux interfaces: accept4, fallocate, fallocate64.
818 Implemented by Ulrich Drepper.
820 * Correct declarations of string function when used in C++ code. This
821 could lead to compile errors for invalid C++ code.
823 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
826 * New POSIX 2008 interface: psiginfo
827 Implemented by Ulrich Drepper.
829 * New ISO C++1x interfaces: quick_exit, at_quick_exit
830 Implemented by Ulrich Drepper.
832 * Support for selecting between multiple function definitions at runtime
833 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
835 * The libcrypt library can now use the hash function implementations in
836 NSS. Implemented by Ulrich Drepper.
838 * The malloc implementation can be compiled to be less memory efficient
839 but higher performing in multi-threaded programs.
840 Implemented by Ulrich Drepper.
842 * New locales: nan_TW@latin, ks_IN
844 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
845 Implemented by Ulrich Drepper.
847 * Extended printf hook support. It is possible to use user-defined types
848 and extend existing format specifiers.
849 Implemented by Ulrich Drepper.
851 * Handling for group shadow files has been added.
852 Implemented by Ulrich Drepper.
854 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
855 servers (the case, e.g., for some people using the built-in DNS
856 server in ADSL modems/routers). There is a once-per-process timeout
857 in case of a broken server. To avoid it, users can run nscd or put
858 'options single-request' in /etc/resolv.conf.
859 Implemented by Ulrich Drepper.
863 * The following bugs are resolved with this release:
865 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
866 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
867 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
868 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
869 6968, 6974, 6980, 6995, 7008, 7009, 7029
871 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
872 up at the same time. Implemented by Ulrich Drepper.
874 * TLS descriptors for LD and GD on x86 and x86-64.
875 Implemented by Alexandre Oliva.
877 * getaddrinfo now handles DCCP and UDPlite.
878 Implemented by Ulrich Drepper.
880 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
881 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
882 Implemented by Ulrich Drepper.
884 * New implementation of memmem, strstr, and strcasestr which is O(n).
885 Implemented by Eric Blake.
887 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
889 * Implement "e" option for popen to open file descriptor with the
890 close-on-exec flag set. Implemented by Ulrich Drepper.
892 * Implement "b" mode for fmemopen. In this mode writes writes don't
893 implicitly add a NUL byte and seeks from the end of the buffer really
894 use the buffer end, not the string length as the basis.
895 Implemented by Ulrich Drepper.
897 * Many functions, exported and internal, now atomically set the close-on-exec
898 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
900 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
902 Implemented by Pravin Satpute.
904 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
908 * The following bugs are resolved with this release:
910 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
911 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
912 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
913 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
914 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
915 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
916 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
918 * New locales: bo_CN, bo_IN, shs_CA.
920 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
922 * Sorting rules for some Indian languages (Devanagari and Gujarati).
923 Implemented by Pravin Satpute.
925 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
927 * nscd caches now all timeouts for DNS entries
928 Implemented by Ulrich Drepper.
930 * nscd is more efficient and wakes up less often.
931 Implemented by Ulrich Drepper.
933 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
934 vdprintf, and obstack_vprintf.
935 Implemented by Jakub Jelinek.
937 * Faster memset for x86-64.
938 Implemented by Harsha Jagasia and H.J. Lu.
940 * Faster memcpy on x86.
941 Implemented by Ulrich Drepper.
943 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
944 Implemented by Ulrich Drepper.
946 * Faster sqrt and sqrtf implemention for some PPC variants.
947 Implemented by Steven Munroe.
951 * The following bugs are resolved with this release:
953 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
954 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
955 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
956 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
957 5071, 5103, 5104, 5112, 5113, 5184, 5186
959 * More checking functions: fread, fread_unlocked, open*, mq_open.
960 Implemented by Jakub Jelinek and Ulrich Drepper.
962 * Extend fortification to C++. Implemented by Jakub Jelinek.
964 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
965 by not recognizing 'a' as a modifier when those specs are requested.
966 Implemented by Jakub Jelinek.
968 * PPC optimizations to math and string functions.
969 Implemented by Steven Munroe.
971 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
972 options to be passed. Implemented by Ulrich Drepper.
974 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
976 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
977 Implemented by Ulrich Drepper.
979 * Handle private futexes in the NPTL implementation.
980 Implemented by Jakub Jelinek and Ulrich Drepper.
982 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
983 Implemented by Roland McGrath and Ulrich Drepper.
985 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
987 * SHA-256 and SHA-512 based password encryption.
988 Implemented by Ulrich Drepper.
990 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
991 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
994 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
995 Implemented by Ulrich Drepper.
999 * The following bugs are resolved with this release:
1001 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
1002 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
1003 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
1004 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
1005 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
1006 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
1007 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
1010 * New Linux interfaces: epoll_pwait, sched_getcpu.
1012 * New generic interfaces: strerror_l.
1014 * nscd can now cache the services database. Implemented by Ulrich Drepper.
1018 * The following bugs are resolved with this release:
1020 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
1021 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
1022 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
1023 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
1024 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
1025 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
1026 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
1027 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
1028 3225, 3251, 3252, 3253, 3273
1030 * For Linux, the sorting of addresses returned by getaddrinfo now also
1031 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
1032 Implemented by Ulrich Drepper.
1034 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
1035 Implemented by Ulrich Drepper.
1037 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
1039 * New iconv module for MIK. Contributed by Alexander Shopov.
1041 * For sites with broken group and/or passwd database, the auto-propagate
1042 option of nscd can prevent creating ID lookup entries from the results
1043 of a name lookup and vice versa. This usually is no problem but some
1044 site might have problems with the default behavior.
1045 Implemented by Ulrich Drepper.
1047 * Iterating over entire database in NIS can be slow. With the
1048 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
1049 to trade time for memory. The entire database will be read at once.
1050 Implemented by Ulrich Drepper.
1052 * The interfaces introduced in RFC 3542 have been implemented by
1055 * Support for the new ELF hash table format was added by Ulrich Drepper.
1057 * Support for priority inheritance mutexes added by Jakub Jelinek and
1060 * Support for priority protected mutexes added by Jakub Jelinek.
1062 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1063 or_IN, csb_PL, fy_NL, sr_ME.
1067 * More overflow detection functions.
1069 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1070 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1072 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1073 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1074 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1075 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1076 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1077 by Masahide Washizawa.
1079 * It is now possible to install audit libraries for the dynamic linker using
1080 LD_AUDIT. Implemented by Ulrich Drepper.
1082 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1083 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1084 For a libc and libpthread that works well on Linux 2.4 kernels, we
1085 recommend using the stable 2.3 branch.
1087 * The new function open_wmemstream acts like open_memstream,
1088 but uses a wchar_t wide character buffer.
1090 * The new function ppoll is an improved version of poll, similar to pselect.
1092 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1093 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1094 renameat, unlinkat, linkat, symlinkat, readlinkat.
1096 * New Linux kernel system calls: unshare,
1097 inotify_init, inotify_add_watch, inotify_rm_watch.
1099 * The euidaccess function is now also known by the alias eaccess,
1100 for compatibility with some other systems.
1102 * Timezone data updated to 2006b version.
1106 * The following bugs are resolved with this release:
1108 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1109 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1110 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1111 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1112 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1113 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1115 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1117 * As of this release, GCC 4 can be used to compile the C Library.
1119 * Timezone data updated to 2005m version.
1123 * The following bugs are resolved with this release:
1125 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1126 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1127 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1128 777, 787, 821, 822, 823, 825
1130 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1134 * Support for RFC 3678. Real implementations exist only for Linux so far.
1135 Implemented by Ulrich Drepper.
1137 * nscd can now cache entries persistently. Expiring entries are reloaded.
1138 For speedups the cache can be shared in memory with client processes.
1139 Implemented by Ulrich Drepper.
1141 * nscd can now perform SELinux checks.
1142 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1144 * getaddrinfo queries are now cached. Canonical name lookup is performed
1146 Implemented by Ulrich Drepper.
1148 * The nothrow function attribute is used when headers are used by gcc when
1149 compiling C code. This can avoid significant amounts of exception
1152 * The malloc functions perform more error checking and are stricter when
1153 it comes to reacting on errors. The default action is to terminate
1154 the process after showing an error message. Implemented by Ulrich Drepper.
1156 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1157 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1159 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1160 namespaces using the new function dlmopen(). This feature is of course,
1161 like most other dynamic loading functionality, not available in statically
1162 linked applications. Implemented by Ulrich Drepper.
1164 * Low-overhead boundary checking variants of string and some stdio functions
1165 were added. These are to be used in conjunction with a gcc patch by
1166 Jakub Jelinek which adds calls to these functions if possible.
1167 Implemented by Jakub Jelinek and Ulrich Drepper.
1169 * Old code for several operating systems and machine architectures that
1170 have not been in working condition in a long time have been removed from
1171 the main source tree maintained by the GNU C Library's maintainers.
1172 These files are now reside in the separate `ports' source module
1173 that is usable as an add-on when building the library.
1177 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1178 interrogate the dynamic linker, compatible with the Solaris interface.
1180 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1181 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1183 * getifaddrs now uses the netlink interface on Linux to get its information.
1184 Implemented by Thorsten Kukuk.
1186 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1187 Implemented by Ulrich Drepper.
1189 * support for non-executable stacks on x86 has been added. Changes mostly
1192 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1195 * getaddrinfo now performs destination address selection according to
1200 * Thread-safe interfaces for many functions that access locale data
1201 were added in version 2.3, but these features were omitted from NEWS.
1202 Many functions have variants with an `_l' suffix that take a `locale_t'
1203 object as a parameter rather than consulting the current locale.
1204 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1205 create and maintain `locale_t' objects. Additionally, the new function
1206 `uselocale' sets "the current locale" (as used by functions not so
1207 parameterized) set for an individual thread. These features were added
1208 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1210 * The functions getresuid, getresgid, setresuid, and setresgid, which
1211 have long been available on Linux, are now declared in <unistd.h>
1212 and are now also available on the Hurd.
1214 * ELF thread-local storage support (TLS) now works on x86-64.
1216 * The new dynamic string token $LIB is expanded in shared library names.
1217 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1219 * Aldy Hernandez contributed complete software floating point support for
1220 PowerPC machines with no FPU.
1222 * fexecve is implemented on Linux.
1224 * The `btowc' function should work at least twice as fast due to
1225 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1227 * With approriate thread add-ons cancelable functions are now implemented
1228 in libc.so as well. No need to call the function in libpthread. This
1229 change allowed to finally disable the incorrect and expensive handling
1230 of weak definition in ld.so.
1232 * Yet more PLT entries in libc.so have been removed. We finally arrived
1233 at the bare minimum. Startup times improved appropriately.
1235 * Support for the new Linux/x86 system call interface was added. The
1236 AT_SYSINFO auxiliary vector entry is recognized and handled.
1240 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1243 * iconv (the program and the interface) now accepts empty names (excluding
1244 options like //TRANSLIT) to mean "use charset of current locale".
1246 * localedef can now transliterate characters in strings which are not in
1247 the provided charmap. The information from the input locale is used.
1249 * Prelinking support was added for ELF targets. This requires additional
1250 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1252 * Read-only stdio streams now use mmap to speed up operation by eliminating
1253 copying and buffer underflows. To use add 'm' to the mode string of
1254 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1256 * The malloc functions were completely rewritten by Wolfram Gloger based
1257 on Doug Lea's malloc-2.7.0.c.
1259 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1260 implementation of regex.
1262 * Bruno Haible upgraded the iconv and locale implementation to support
1265 * Contents of the LC_* and LANG environment variables in the CEN style are
1266 not recognized anymore. It never was used. Change by Ulrich Drepper.
1268 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1269 thread-local storage (TLS) ABI on some platforms.
1270 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1272 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1273 EUC-JISX0213, and TSCII.
1275 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1276 BSD-compatible interface for getting all network interface addresses.
1277 Implementation for IPv4 by Roland McGrath.
1279 * Loading of locale data is faster due to the introduction of a locale
1280 archive. Implemented by Roland McGrath and Ulrich Drepper.
1282 * Startup times are significantly reduced by not using exported functions
1283 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1286 * Steven Munroe contributed a port to PowerPC64/Linux.
1290 * The Hurd now uses the GNU libio implementation of stdio rather than the
1291 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1293 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1294 with the same behavior as the Linux system call of the same name.
1298 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1299 128-bit long double format.
1301 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1302 IBM1161, and IBM1162 charsets.
1304 * Andreas Jaeger contributed a port to x86-64/Linux.
1306 * Peter Bruin contributed a port to PowerPC/Hurd.
1308 * libc functions using I/O streams now can handle wide-oriented streams
1311 * optimizations in the dynamic linker. Binaries created by recent binutils
1312 versions start up quicker due to reduced time spent on relocations.
1314 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1318 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1319 asinh, atanh, j0 for the 128-bit long double format.
1321 * Bruno Haible updated all the code handling Unicode in some form to
1322 support Unicode 3.1.
1324 * Speed of regex for single-byte locales is back to previous levels.
1325 Patch by Isamu Hasegawa.
1327 * Alpha, SPARC, and IA-64 now also using floating stacks.
1329 * Startup time of internationalized applications greatly improved through
1330 iconv cache. Use iconvconfig to generate the cache file.
1331 Contributed by Ulrich Drepper.
1333 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1334 severe performance problems. Patch by David Mosberger.
1336 * The Hurd port got a lot more functionality like AIO, various stdio
1337 extensions, etc. Mainly done by Roland McGrath.
1339 * mtrace can now lookup symbols in shared libraries.
1343 * Intel's IA-64 math library is largely integrated. It provides fast and
1344 accurate implementatations for most basic and standard math functions
1345 in float, double, and long double format.
1347 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1348 and asin for the 96-bit long double format and asin, log, tan for the
1349 128-bit long double format.
1351 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1352 The basic double functions exist today. Contributed by Abraham Ziv
1353 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1354 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1356 * An asynchronous name lookup library was added. The interface is designed
1357 after POSIX AIO. The proposal was circulated beforehand to get comments.
1358 No negative ones came in. Implemented by Ulrich Drepper.
1360 * Port to S390/64bit contributed by Martin Schwidefsky
1361 <schwidefsky@de.ibm.com>.
1363 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1364 of functions for Linux/IA-64.
1366 * The RPC code is now thread safe. Threads can now use the same service
1367 of different services at the same time. Patch by Eric Norum
1368 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1370 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1371 family of functions for Linux/S390.
1373 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1374 of functions for Linux/x86.
1376 * Port to Linux/CRIS contributed by Axis Communications.
1380 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1381 we can now check for namespace violations and missing declarations. The
1382 result is that almost all headers are now Unix-compliant (as defined in
1383 the upcoming XPG6). The negative side is that some programs might need
1384 corrections, too, if they depend on the incorrect form of the headers in
1385 previous versions which defined too many symbols and included too many
1388 * regex now handles multibyte character sets correctly.
1389 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1391 * iconv (the program) does now conform to the upcoming XPG6 and handles
1392 charmaps. Instead of the charset names the path of charmaps can be
1393 provided and the conversion happens based on this data.
1394 Contributed by Ulrich Drepper.
1396 * The locale program now provides detailed information about the installed
1401 only lists the names of the supported locales
1405 provides details such as country, language, and codeset name.
1406 Contributed by Ulrich Drepper.
1410 * The gencat program now parses the input file according to the charset
1411 selected by the LC_CTYPE category. This is important for stateful
1412 character sets. To make generating catalogs easier there is a way
1413 to overwrite the charset selected by the locale: before the first
1414 message or $ quote line the catalog can contain a line like
1416 $ codeset=ISO-8859-2
1418 to select the charset (ISO-8859-2 in this case).
1420 Implemented by Shinya Hanataka and Ulrich Drepper.
1422 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1423 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1424 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1426 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1427 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1429 * The LANGUAGE environment variable is now ignored unless the locale is
1430 changed from the default "C" locale.
1432 * The usual bug fixes.
1436 * Greg McGary added runtime support for bounds checking using gcc's
1437 new -fbounded-pointers option. ix86 target is complete. PowerPC
1440 * Thorsten Kukuk added secure mode support to nscd.
1442 * The Berkeley db libraries have been removed.
1444 Related, the nss_db module is now in a separate package since it
1445 obviously requires a database library being available.
1447 * Wide character I/O streams implemented by Ulrich Drepper.
1449 * Functions from the extended socket API added by Ulrich Drepper.
1451 * Functions feenableexcept and fedisableexcept to control the
1452 behaviour of individual exceptions have been added by Andreas Jaeger.
1454 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1456 * The resolver code has been updated from bind 8.2.3-T5B which supports
1457 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1460 This change could in some situations effect backward compatibility. Since
1461 now `_res' is a thread-local instead of a global variable, modifying it
1462 in one thread does not have any effect in other threads.
1464 The resolver library was also extended to allow IPv6 as the transport
1465 protocol for the requests. This work was done by Stig Venaas.
1467 * Compatibility code for K&R C compilers has been removed from the
1468 header files. A ISO C compiler is needed to use the library
1469 (conforming to either C89 or C99 standard).
1471 * Complete rewrite of the localedef program to support multibyte character
1472 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1473 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1474 Implemented by Ulrich Drepper.
1476 Bruno Haible significantly improved the generation and use of the data
1477 structures for the wide character tables.
1479 * Plural handling in gettext implemented by Ulrich Drepper.
1481 * The utmp daemon has been removed.
1483 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1485 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1488 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1490 * POSIX barriers implemented by Kaz Kylheku.
1492 * POSIX spawn function family implemented by Ulrich Drepper.
1494 * POSIX spinlocks are now available.
1496 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1498 * the configure option --enable-kernel=X.Y.Z allows to strip out
1499 compatibility for kernel versions before X.Y.Z. This is currently only
1500 implemented for Linux.
1502 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1503 field sin6_scope_id. This means that all programs using IPv6 should be
1504 recompiled. Don't expect binary compatibility with previous glibc
1507 * various conversion modules for IBM character sets contributed by
1510 * IA-64 port by Jes Sorensen and HJ Lu.
1524 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1526 * New xdr functions are added; some rpc functions are now 64bit clean.
1528 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1530 * Fixed known incompatibilities with glibc 2.0.
1532 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1534 * Optimized a number of functions (especially the ELF dynamic loader).
1536 * Update timezone data files.
1538 * lots of charmaps corrections
1540 * some new locale definitions and charmaps
1545 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1546 conform to POSIX member type requirements. Symbol versions have been
1547 adjusted as needed within the library, and for direct use by applications,
1548 but there is potential for problems if third-party libraries use
1549 struct timeval as part of their interface. This does not present
1550 a problem for X and other "essential" system libraries.
1552 * An additional locale model to support C++ Standard Library locale
1553 model and probably more was implemented by Ulrich Drepper.
1555 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1558 * Miles Bader provided the `argp' function family to support hierachical
1559 command line argument parsing, layered on top of getopt.
1561 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1563 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1566 * scanf recognizes the %a and %A format for scanning floating point numbers.
1568 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1569 information and interfaces for the available integer types.
1571 * about 130 new math functions were added to implement the ISO C9x math
1574 * the new header <complex.h> contains definitions of the complex math
1575 functions from ISO C 9X.
1577 * the new header <tgmath.h> defines generic macros to use complex or
1578 real valued functions.
1580 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1582 * Andreas Jaeger provided a test suite for the math library.
1584 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1586 * Ulrich Drepper added character set conversion functions (iconv).
1588 * Optimized string functions have been added.
1590 * The localedata addon is now part of glibc.
1592 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1594 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1595 daemon for NSS (nscd).
1597 Missing a better place here are some numbers on improvements. Under
1598 Linux 2.1.125 un-tar-ing the kernel sources takes
1602 using local files 12.19s 6.88s 22.91s
1604 using NIS 13.92s 8.91s 26.34s
1606 using NIS & nscd 10.37s 7.34s 25.30s
1608 using NIS+ 27.57s 30.37s 640.46s
1610 using NIS+ & nscd 10.25s 7.83s 26.51s
1612 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1614 Keep in mind that non-namelookup related operations dominate above times.
1615 It was just a common complain that using NIS+ unpacking the kernel is
1618 [1] The old nscd implementation is not available anymore since it was
1619 distributed with glibc up to version 2.0.98 and thus is now replaced.
1621 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1623 * Mark Kettenis provided a Hesiod NSS module.
1625 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1626 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1628 * rcmd can now handle netgroups (Dick Streefland).
1630 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1633 * Support for the IPv6 protocol has been added to the socket API, as per the
1634 latest draft standards.
1636 * Support for Linux 2.2 has been added.
1638 * Interface changes relative to the latest 2.0.x release:
1639 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1640 addseverity NEW: Unix98
1641 alphasort64 NEW: LFS
1642 argp_err_exit_status NEW: argp, GNU ext
1643 argp_error NEW: argp, GNU ext
1644 argp_failure NEW: argp, GNU ext
1645 argp_help NEW: argp, GNU ext
1646 argp_parse NEW: argp, GNU ext
1647 argp_program_bug_address NEW: argp, GNU ext
1648 argp_program_version NEW: argp, GNU ext
1649 argp_program_version_hook NEW: argp, GNU ext
1650 argp_state_help NEW: argp, GNU ext
1651 argp_usage NEW: argp, GNU ext
1652 authdes_create NEW: Secure RPC
1653 authdes_getucred NEW: Secure RPC
1654 authdes_pk_create NEW: Secure RPC
1655 backtrace NEW: GNU ext.
1656 backtrace_symbols NEW: GNU ext.
1657 backtrace_symbols_fd NEW: GNU ext.
1659 cacosf NEW: ISO C 9x
1660 cacosh NEW: ISO C 9x
1661 cacoshf NEW: ISO C 9x
1662 cacoshl NEW: ISO C 9x
1663 cacosl NEW: ISO C 9x
1670 casinf NEW: ISO C 9x
1671 casinh NEW: ISO C 9x
1672 casinhf NEW: ISO C 9x
1673 casinhl NEW: ISO C 9x
1674 casinl NEW: ISO C 9x
1676 catanf NEW: ISO C 9x
1677 catanh NEW: ISO C 9x
1678 catanhf NEW: ISO C 9x
1679 catanhl NEW: ISO C 9x
1680 catanl NEW: ISO C 9x
1681 cbc_crypt NEW: Secure RPC
1685 ccoshf NEW: ISO C 9x
1686 ccoshl NEW: ISO C 9x
1692 cimagf NEW: ISO C 9x
1693 cimagl NEW: ISO C 9x
1694 clearerr_locked REMOVED
1695 clntunix_create NEW: sunrpc ext
1697 clog10 NEW: ISO C 9x
1698 clog10f NEW: ISO C 9x
1699 clog10l NEW: ISO C 9x
1709 cprojf NEW: ISO C 9x
1710 cprojl NEW: ISO C 9x
1712 crealf NEW: ISO C 9x
1713 creall NEW: ISO C 9x
1718 csinhf NEW: ISO C 9x
1719 csinhl NEW: ISO C 9x
1722 csqrtf NEW: ISO C 9x
1723 csqrtl NEW: ISO C 9x
1727 ctanhf NEW: ISO C 9x
1728 ctanhl NEW: ISO C 9x
1730 des_setparity NEW: Secure RPC
1731 ecb_crypt NEW: Secure RPC
1732 endutxent NEW: Unix98
1734 exp10f NEW: ISO C 9x
1735 exp10l NEW: ISO C 9x
1739 fattach NEW: STREAMS
1740 fdetach NEW: STREAMS
1744 feclearexcept NEW: ISO C 9x
1745 fegetenv NEW: ISO C 9x
1746 fegetexceptflag NEW: ISO C 9x
1747 fegetround NEW: ISO C 9x
1748 feholdexcept NEW: ISO C 9x
1750 feraiseexcept NEW: ISO C 9x
1751 ferror_locked REMOVED
1752 fesetenv NEW: ISO C 9x
1753 fesetexceptflag NEW: ISO C 9x
1754 fesetround NEW: ISO C 9x
1755 fetestexcept NEW: ISO C 9x
1756 feupdateenv NEW: ISO C 9x
1757 fflush_locked REMOVED
1761 fgets_unlocked NEW: GNU ext.
1762 fileno_locked REMOVED
1774 fputc_locked REMOVED
1775 fputs_unlocked NEW: GNU ext.
1776 fread_unlocked NEW: GNU ext.
1781 fstatvfs NEW: Unix98
1785 ftruncate64 NEW: LFS
1787 fwrite_unlocked NEW: GNU ext.
1788 gai_strerror NEW: IPv6
1792 getchar_locked REMOVED
1794 getdate_err NEW: Unix98
1795 getdate_r NEW: GNU ext.
1797 getnameinfo NEW: IPv6
1798 getnetname NEW: Secure RPC
1799 getpmsg NEW: STREAMS
1800 getpt NEW: Unix98 PTY
1801 getrlimit64 NEW: LFS
1802 getutxent NEW: Unix98
1803 getutxid NEW: Unix98
1804 getutxline NEW: Unix98
1805 glob64 NEW: GNU ext.
1806 globfree64 NEW: GNU ext.
1807 gnu_get_libc_release NEW: GNU ext.
1808 gnu_get_libc_version NEW: GNU ext.
1809 grantpt NEW: Unix98 PTY
1810 host2netname NEW: Secure RPC
1812 iconv_close NEW: iconv
1813 iconv_open NEW: iconv
1814 if_freenameindex NEW: IPv6
1815 if_indextoname NEW: IPv6
1816 if_nameindex NEW: IPv6
1817 if_nametoindex NEW: IPv6
1818 in6addr_any NEW: IPv6
1819 in6addr_loopback NEW: IPv6
1820 inet6_isipv4mapped NEW: IPv6
1821 isastream NEW: STREAMS
1822 iswblank NEW: GNU ext.
1823 key_decryptsession NEW: Secure RPC
1824 key_decryptsession_pk NEW: Secure RPC
1825 key_encryptsession NEW: Secure RPC
1826 key_encryptsession_pk NEW: Secure RPC
1827 key_gendes NEW: Secure RPC
1828 key_get_conv NEW: Secure RPC
1829 key_secretkey_is_set NEW: Secure RPC
1830 key_setnet NEW: Secure RPC
1831 key_setsecret NEW: Secure RPC
1832 llrint NEW: ISO C 9x
1833 llrintf NEW: ISO C 9x
1834 llrintl NEW: ISO C 9x
1835 llround NEW: ISO C 9x
1836 llroundf NEW: ISO C 9x
1837 llroundl NEW: ISO C 9x
1842 lrintf NEW: ISO C 9x
1843 lrintl NEW: ISO C 9x
1844 lround NEW: ISO C 9x
1845 lroundf NEW: ISO C 9x
1846 lroundl NEW: ISO C 9x
1848 makecontext NEW: Unix98
1849 mempcpy NEW: GNU ext.
1852 modify_ldt NEW: kernel
1856 nearbyint NEW: ISO C 9x
1857 nearbyintf NEW: ISO C 9x
1858 nearbyintl NEW: ISO C 9x
1859 netname2host NEW: Secure RPC
1860 netname2user NEW: Secure RPC
1861 nexttoward NEW: ISO C 9x
1862 nexttowardf NEW: ISO C 9x
1863 nexttowardl NEW: ISO C 9x
1867 passwd2des NEW: Secure RPC
1869 pow10f NEW: GNU ext.
1870 pow10l NEW: GNU ext.
1873 printf_size NEW: GNU ext.
1874 printf_size_info NEW: GNU ext.
1875 profil_counter REMOVED
1876 pthread_mutexattr_getkind_np REPLACED
1877 pthread_mutexattr_setkind_np REPLACED
1878 ptsname NEW: Unix98 PTY
1879 ptsname_r NEW: Unix98 PTY
1881 putchar_locked REMOVED
1882 putgrent NEW: GNU ext.
1884 putpmsg NEW: STREAMS
1885 pututxline NEW: Unix98
1889 readdir64_r NEW: LFS
1890 remquo NEW: ISO C 9x
1891 remquof NEW: ISO C 9x
1892 remquol NEW: ISO C 9x
1894 roundf NEW: ISO C 9x
1895 roundl NEW: ISO C 9x
1897 scalbln NEW: ISO C 9x
1898 scalblnf NEW: ISO C 9x
1899 scalblnl NEW: ISO C 9x
1901 sendfile NEW: kernel
1902 setcontext NEW: Unix98
1903 setrlimit64 NEW: LFS
1904 setutxent NEW: Unix98
1906 sigignore NEW: Unix98
1907 sigqueue NEW: POSIX.1b
1908 sigrelse NEW: Unix98
1909 sigset NEW: POSIX.1b
1910 sigtimedwait NEW: POSIX.1b
1911 sigwaitinfo NEW: POSIX.1b
1912 sincos NEW: GNU ext.
1913 sincosf NEW: GNU ext.
1914 sincosl NEW: GNU ext.
1918 strcasestr NEW: GNU ext.
1919 strtoimax NEW: ISO C 9x
1920 strtoumax NEW: ISO C 9x
1921 strverscmp NEW: GNU ext.
1922 svcauthdes_stats NEW: Secure RPC
1923 svcunix_create NEW: sunrpc etx
1924 svcunixfd_create NEW: sunrpc ext
1925 swapcontext NEW: Unix98
1926 tcgetsid NEW: Unix98 PTY
1927 tdestroy NEW: GNU ext.
1928 tgamma NEW: ISO C 9x
1929 tgammaf NEW: ISO C 9x
1930 tgammal NEW: ISO C 9x
1934 truncf NEW: ISO C 9x
1935 truncl NEW: ISO C 9x
1937 unlockpt NEW: Unix98 PTY
1938 updwtmpx NEW: Unix98
1939 user2netname NEW: Secure RPC
1940 utmpxname NEW: Unix98
1941 versionsort NEW: GNU ext.
1942 versionsort64 NEW: GNU ext.
1944 wcscasecmp NEW: GNU ext.
1945 wcsncasecmp NEW: GNU ext.
1946 wcsnlen NEW: GNU ext.
1947 wcstoimax NEW: ISO C 9x
1948 wcstoll NEW: ISO C 9x
1949 wcstoull NEW: ISO C 9x
1950 wcstoumax NEW: ISO C 9x
1952 wordexp NEW: POSIX.2
1953 wordfree NEW: POSIX.2
1954 write_profiling REMOVED
1955 xdecrypt NEW: Secure RPC
1956 xdr_authdes_cred NEW: Secure RPC
1957 xdr_authdes_verf NEW: Secure RPC
1958 xdr_cryptkeyarg NEW: Secure RPC
1959 xdr_cryptkeyarg2 NEW: Secure RPC
1960 xdr_cryptkeyres NEW: Secure RPC
1961 xdr_getcredres NEW: Secure RPC
1962 xdr_key_netstarg NEW: Secure RPC
1963 xdr_key_netstres NEW: Secure RPC
1964 xdr_keybuf NEW: Secure RPC
1965 xdr_keystatus NEW: Secure RPC
1966 xdr_netnamestr NEW: Secure RPC
1967 xdr_sizeof NEW: Secure RPC
1968 xdr_unixcred NEW: sunrpc ext
1969 xencrypt NEW: Secure RPC
1970 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1981 * inet_ntoa is thread-safe
1983 * updwtmp is moved from libutil to libc
1985 * rewrite of cbrt function
1987 * update of timezone data
2001 * add atoll function
2003 * fix complex problems in Berkeley DB code
2005 * fix math functions
2009 * fixed lots of header problems (especially Linux/GNU specific)
2011 * dynamic loader preserves all registers
2013 * Roland McGrath provided support for handling of auxiliary objects in
2014 the ELF dynamic loader.
2016 * support for parallel builds is improved
2020 * GNU extensions are no longer declared by default. To enable them you
2021 must define the macro `_GNU_SOURCE' in your program or compile with
2024 * The library has changed from using GNU ld symbol aliases to using weak
2025 symbols where available. The ELF object file format supports weak
2026 symbols; GNU ld also supports weak symbols in the a.out format. (There
2027 is also now support for other GNU ld extensions in ELF. Use the
2028 `--with-elf' option to configure to indicate you have ELF, and
2029 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
2030 of many files which contained only symbol aliases, reducing the size of
2031 the source and the compiled library; many other files were renamed to
2032 less cryptic names previously occupied by the symbol alias files.
2033 There is a new header file <elf.h> for programs which operate on
2034 files in the ELF format.
2036 * Converted to Autoconf version 2, so `configure' has more options.
2037 Run `configure --help' to see the details.
2039 * The library can now be configured to build profiling, highly-optimized
2040 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
2041 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
2042 `configure' enable building these extra libraries. The shared library is
2043 built by default when using both ELF and GNU ld. When shared libraries
2044 are enabled, the new library `-ldl' is available for arbitrary run-time
2045 loading of shared objects; its interface is defined in <dlfcn.h>. The
2046 new header file <link.h> gives access to the internals of the run-time
2047 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
2048 application of same name on other systems and it provides information
2049 about dynamically linked binaries.
2051 * The C library now provides the run-time support code for profiling
2052 executables compiled with `-pg'. Programs can control the profiling code
2053 through the interface in <sys/gmon.h>. The `gmon.out' files written by
2054 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
2055 the support for this file format was contributed by David Mosberger-Tang.
2057 * The math code has been replaced with a math library based on fdlibm from
2058 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
2059 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
2060 functions. The math functions now reside in a separate library, so
2061 programs using them will need to use `-lm' their linking commands.
2063 * John C. Bowman contributed optimized ix87 assembler inline functions.
2065 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2066 mechanism similar to that found in Solaris 2. This is now used for the
2067 group, passwd, hosts, networks, services, protocols, rpc, ethers,
2068 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
2069 file controls what services are used for each individual database. This
2070 works by loading shared libraries with names specified in `nsswitch.conf',
2071 so service modules can be changed or added at any time without even
2072 relinking any program. Currently there are the file, db, and NIS based
2073 NSS services available.
2075 * The new functions `strtoq' and `strtouq' parse integer values from
2076 strings, like `strtol' and `strtoul', but they return `long long int' and
2077 `unsigned long long int' values, respectively (64-bit quantities).
2079 * The new functions `strtof' and `strtold' parse floating-point values from
2080 strings, like `strtod', but they return `float' and `long double' values,
2081 respectively (on some machines `double' and `long double' are the same).
2083 * Ulrich Drepper has contributed new implementations of the floating-point
2084 printing and reading code used in the `printf' family of functions and
2085 `strtod', `strtof', and `strtold'. These new functions are perfectly
2086 accurate, and much faster than the old ones.
2088 * The implementation of the POSIX locale model was completely rewritten by
2089 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2090 to compile the POSIX locale definition.
2092 * The former dummy implementations of the strcoll and strxfrm function are
2093 now replaced by fully functional code contributed by Ulrich Drepper. The
2094 collation information comes from the POSIX locale definitions.
2096 * The new header <langinfo.h> defines an interface for accessing
2097 various locale-dependent data (using the locale chosen with `setlocale').
2099 * Ulrich Drepper has contributed a new suite of functions for operation on
2100 wide-character and multibyte-character strings, in <wchar.h>;
2101 and classification and case conversion of wide characters, in <wctype.h>.
2102 These new functions are conforming to the ISO C, Amendement 1 specification.
2104 * There is now a second implementation of the standard I/O library available.
2105 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2106 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2108 * You can now use positional parameter specifications in format strings
2109 for the `printf' and `scanf' families of functions. For example,
2110 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2111 ``Number 6, Mr Jones''. This is mainly useful when providing different
2112 format strings for different languages, whose grammars may dictate
2113 different orderings of the values being printed. To support this
2114 feature, the interface for `register_printf_handler' has changed; see
2115 the header file <printf.h> for details.
2117 * The `printf' and `scanf' families of functions now understand a new
2118 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2119 to group numbers as indicated by the locale; for `scanf' and friends, this
2120 says to accept as valid only a number with all the proper grouping
2121 separators in the right places. In the default "C" locale, numbers are
2122 not grouped; but locales for specific countries will define the usual
2123 conventions (i.e. separate thousands with `,' in the US locale).
2125 * The pgrp functions have been regularized, slightly incompatibly but much
2126 less confusingly. The core functions are now `getpgid' and `setpgid',
2127 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2128 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2129 provided for compatibility. There is no longer an incompatible `getpgrp'
2130 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2132 * The new header file <fts.h> and suite of functions simplify programs that
2133 operate on directory trees. This code comes from 4.4 BSD.
2135 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2136 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2137 NSS scheme used in glibc.
2139 * There is a new malloc debugging hook `__memalign_hook'.
2141 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2142 `unsigned int' in <sys/types.h>. These are for compatibility only and
2143 their use is discouraged.
2145 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2146 done differently, so that it works even without GNU ld.
2148 * New function `euidaccess' checks allowed access to a file like `access',
2149 but using the effective IDs instead of the real IDs.
2151 * The time zone data files have been updated for the latest and greatest
2152 local time conventions of the countries of the world.
2154 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2157 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2158 for formatting floating-point numbers. They are provided only for
2159 compatibility; new programs should use `sprintf' instead. There are
2160 also equivalent function for the `long double' floating-point type and
2161 all functions also exist in a reentrant form.
2163 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2164 functions for maintaining the login-record files (primarily of use to
2165 system programs such as `login'), and convenient functions for
2166 allocating and initializing a pseudo-terminal (pty) device.
2168 * Ulrich Drepper has contributed new support for System V style
2169 shared memory and IPC on systems that support it.
2171 * Ulrich Drepper has contributed several miscellaneous new functions found
2172 in System V: The `hsearch' family of functions provide an effective
2173 implementation of hash tables; `a64l' and `l64a' provide a very simple
2174 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2177 * Ulrich Drepper has contributed new reentrant counterparts for the
2178 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2180 * Ulrich Drepper has contributed new, highly-optimized versions of several
2181 string functions for the i486/Pentium family of processors.
2183 * Ulrich Drepper has updated the Linux-specific code, based largely
2184 on work done in Hongjiu Lu's version of GNU libc for Linux.
2185 The GNU library now supports Linux versions 2.0.10 and later,
2186 using the ELF object file format (i[3456]86-*-linux).
2188 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2190 * David Mosberger-Tang and Richard Henderson have ported the C library
2191 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2192 dynamic linking support for ELF/Alpha.
2194 * Richard Henderson contributed several Alpha optimized assembler function
2195 for arithmetic and string handling.
2197 * Ulrich Drepper has contributed a new set of message catalog functions to
2198 support multiple languages using the <libintl.h> interface, for use with
2199 his new package GNU gettext. Translation volunteers have contributed
2200 catalogs of the library's messages in Spanish, German, and Korean.
2202 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2203 program and the `catgets' function for reading the catalog files it
2204 creates. (The <libintl.h> interface is preferred; we include the
2205 <nl_types.h> interface using `catgets' only for source compatibility with
2206 programs already written to use it.)
2208 * New header file <values.h> gives SVID-compatible names for <limits.h>
2211 * Various new macros, declarations, and small header files for compatibility
2214 * New function `group_member' is a convenient way to check if a process has
2215 a given effective group ID.
2217 * When using GCC 2.7 and later, the socket functions are now declared in a
2218 special way so that passing an argument of type `struct sockaddr_in *',
2219 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2220 `struct sockaddr *' type, does not generate a type-clash warning.
2222 * New function `error' declared in header file <error.h> is a convenient
2223 function for printing error messages and optionally exiting; this is the
2224 canonical function used in GNU programs. The new functions `err', `warn',
2225 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2226 doing the same thing.
2228 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2229 POSIX.2 `glob' function to do ~ and {...} expansion.
2231 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2232 `clearenv' which is used in POSIX.9 is also available.
2234 * New function `getsid' returns session ID number on systems that support it.
2236 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2237 files <db.h> and <mpool.h> provide a rich set of functions for several
2238 types of simple databases stored in memory and in files, and <ndbm.h> is
2239 an old `ndbm'-compatible interface using the `db' functions. Link with
2240 `-ldb' to get these functions.
2242 * New macro `strdupa' copies a string like `strdup', but uses local stack
2243 space from `alloca' instead of dynamic heap space from `malloc'.
2245 * New function `strnlen' is like `strlen' but searches only a given maximum
2246 number of characters for the null terminator. `stpncpy', `strndup' and
2247 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2250 * New function `statfs' in header <sys/statfs.h>.
2252 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2253 provide convenient functions for operating on blocks of null-terminated
2256 * A new suite of functions in <utmp.h> handle all the details of reading
2257 and writing the utmp file.
2259 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2262 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2263 completely POSIX compliant and also implemented the extended functionality
2264 to handle alternate digit representation and alternate era date formats.
2266 * Ulrich Drepper provided an implementation of the `strptime' function
2267 defined in XPG4.2 which transforms a string into a `struct tm' value.
2269 * Paul Eggert provided the tzselect shell script as part of the timezone
2270 code. The shell script makes it easy to select the correct timezone
2273 * The implementation of the malloc family of functions is completely replaced
2274 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2275 The implementation uses the mmap function (if available) and it is
2276 optimized for the use in multi threaded programs.
2278 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2279 functions. This new functionality is usable by specifying a special
2280 salt string and it is compatible with implementation on *BSD systems.
2282 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2283 `getsubopt' to handle second level command line options, `bsd_signal'
2284 to access BSD style `signal' functionality, the obsolete `regexp' style
2287 * the `lchown' function is available on system which support this
2290 * The implementation of the shadow password handling function was contributed
2293 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2295 * POSIX.1g support was added. The <sys/select.h> header is available,
2296 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2297 implementation of `getaddrinfo'.
2301 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2303 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2304 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2306 * The new function `daemon' from 4.4 BSD is useful for server programs that
2307 want to put themselves in the background.
2309 * Joel Sherrill has contributed support for several standalone boards that
2310 run without an operating system.
2312 * `printf', `scanf' and friends now accept a `q' type modifier for long
2313 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2315 * All of the code taken from BSD (notably most of the math and networking
2316 routines) has been updated from the BSD 4.4-Lite release.
2318 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2320 * The new functions `getdomainname' and `setdomainname' fetch or change the
2321 YP/NIS domain name. These are system calls which exist on systems which
2324 * The time zone data files have been updated for the latest international
2327 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2328 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2332 * The C library now includes support for Sun RPC, from Sun's free
2333 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2334 are included. (There is still no support for YP.)
2336 * Tom Quinn has contributed a port of the C library to SGI machines running
2337 Irix 4 (mips-sgi-irix4).
2339 * The new `lockf' function is a simplified interface to the locking
2340 facilities of `fcntl', included for compatibility.
2342 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2344 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2346 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2349 * The error message printed by `assert' for a failed assertion now includes
2350 the name of the program (if using GNU ld) and the name of the calling
2351 function (with versions of GCC that support this).
2353 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2355 * The library now includes the <sys/mman.h> header file and memory
2356 management functions `mmap', `munmap', `mprotect', `msync', and
2357 `madvise', on systems that support those facilities.
2359 * The interface for `mcheck' has changed slightly: the function called to
2360 abort the program when an allocation inconsistency is detected now takes
2361 an argument that indicates the type of failure. The new function
2362 `mprobe' lets you request a consistency check for a particular block at
2363 any time (checks are normally done only when you call `free' or `realloc'
2366 * It is now possible to easily cross-compile the C library, building on one
2367 system a library to run on another machine and/or operating system. All
2368 you need to do is set the variable `HOST_CC' in `configparms' to the
2369 native compiler for programs to run on the machine you are building on (a
2370 few generator programs are used on Unix systems); set `CC' to the
2373 * The new function `fexecve' (only implemented on the GNU system) executes
2374 a program file given a file descriptor already open on the file.
2378 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2379 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2381 * You can set the variable `libprefix' in `configparms' to specify a prefix
2382 to be prepended to installed library files; this makes it easy to install
2383 the GNU C library to be linked as `-lgnuc' or whatever.
2385 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2386 copies a limited number of characters from a string, and returns the
2387 address of the last character written.
2389 * You no longer need to check for whether the installed `stddef.h' is
2390 compatible with the GNU C library. configure now checks for you.
2392 * You can now define a per-stream `fileno' function to convert the
2393 stream's cookie into an integral file descriptor.
2395 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2396 allocates zero bytes of storage, and returns a unique pointer which
2397 you can pass to `realloc' or `free'. The behavior is undefined if
2398 you dereference this pointer.
2400 * The C library now runs on Sony NEWS m68k machines running either
2401 NewsOS 3 or NewsOS 4.
2403 * The new `syscall' function is a system-dependent primitive function
2404 for invoking system calls. It has the canonical behavior on Unix
2405 systems, including unreliable return values for some calls (such as
2406 `pipe', `fork' and `getppid').
2408 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2409 to `EAGAIN', which is the preferred name. On systems whose kernels
2410 use two distinct codes, the C library now translates EWOULDBLOCK to
2411 EAGAIN in every system call function.
2415 * The GNU C Library Reference Manual is now distributed with the library.
2416 `make dvi' will produce a DVI file of the printed manual.
2417 `make info' will produce Info files that you can read on line using C-h i
2418 in Emacs or the `info' program.
2419 Please send comments on the manual to bug-glibc-manual@gnu.org.
2421 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2423 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2425 * Jason Merrill has contributed a port to the Sequent Symmetry running
2426 Dynix version 3 (i386-sequent-dynix).
2428 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2429 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2431 * New function `memory_warnings' lets you arrange to get warnings when
2432 malloc is running out of memory to allocate, like Emacs gives you.
2434 * The C library now contains the relocating allocator used in Emacs 19 for
2435 its editing buffers. This allocator (ralloc) minimizes allocation
2436 overhead and fragmentation by moving allocated regions around whenever it
2437 needs to. You always refer to a ralloc'd region with a "handle" (a
2438 pointer to a pointer--an object of type `void **').
2440 * There is a new `printf' format: `%m' gives you the string corresponding
2441 to the error code in `errno'.
2443 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2444 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2445 pass, the `a' modifier says to fill in a `char **' you pass with a
2448 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2449 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2450 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2452 * `mkstemp' is a traditional Unix function to atomically create and open a
2453 uniquely-named temporary file.
2457 * The standard location for the file that says what the local timezone is
2458 has changed again. It is now `/usr/local/etc/localtime' (or more
2459 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2461 * The distribution no longer contains any files with names longer than 14
2464 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2465 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2467 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2471 * The configuration process has changed quite a bit. The `configure'
2472 script is now used just like the configuration scripts for other GNU
2473 packages. The `sysdeps' directory hierarchy is much rearranged.
2474 The file `INSTALL' explains the new scheme in detail.
2476 * The header files no longer need to be processed into ANSI C and
2477 traditional C versions. There is just one set of files to install, and
2478 it will work with ANSI or old C compilers (including `gcc -traditional').
2480 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2481 MIPS DECStation running Ultrix 4.
2483 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2484 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2485 made itself into a shared library.
2487 * Yet further improved support for the i386, running 4.3 BSD-like systems
2488 (such as Mach 3 with the Unix single-server), or System V.
2490 * New function `strncasecmp' to do case-insensitive string comparison
2491 with limited length.
2493 * New function `strsep' is a reentrant alternative to `strtok'.
2495 * New functions `scandir' and `alphasort' for searching directories.
2497 * New function `setenv' is a better interface to `putenv'.
2499 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2500 function for traversing a directory tree.
2502 * The GNU obstack package is now also part of the C library.
2503 The new function `open_obstack_stream' creates a stdio stream that
2504 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2505 formatted output directly to an obstack.
2507 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2508 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2510 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2512 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2513 things to your strings.
2515 * There are some new test programs: test-fseek, testmb, and testrand.
2517 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2518 These ports are not finished, but are a good starting place for really
2519 supporting those systems.
2521 * `/etc/localtime' is now the standard location for the file that says what
2522 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2523 This follows the general principle that `/etc' is the place for all local
2524 configuration files.
2526 * The C library header files now use `extern "C"' when used by the C++
2527 compiler, so the C library should now work with C++ code.
2529 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2530 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2533 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2534 function which uses the `merge sort' algorithm, and is said to be
2535 significantly faster than the old GNU `qsort' function. Merge sort is
2536 now the standard `qsort' function. The new algorithm can require a lot
2537 of temporary storage; so, the old sorting function is called when the
2538 required storage is not available.
2540 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2541 provides the Unix `crypt' function, plus some other entry points.
2543 * The code and header files taken from 4.4 BSD have been updated with the
2544 latest files released from Berkeley.
2546 ----------------------------------------------------------------------
2547 Copyright information:
2549 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2551 Permission is granted to anyone to make or distribute verbatim copies
2552 of this document as received, in any medium, provided that the
2553 copyright notice and this permission notice are preserved,
2554 thus giving the recipient permission to redistribute in turn.
2556 Permission is granted to distribute modified versions
2557 of this document, or of portions of it,
2558 under the above conditions, provided also that they
2559 carry prominent notices stating who last changed them.
2562 version-control: never
projects / platform / upstream / glibc.git / blob