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 6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347, 15514,
13 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198, 16275,
14 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447, 16516,
15 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600, 16609,
16 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639, 16642,
17 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689, 16695,
18 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739, 16740,
19 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791, 16796,
20 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849, 16854,
21 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912, 16915,
22 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958, 16965,
23 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022, 17031,
24 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078, 17079,
25 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150, 17153,
26 17187, 17213, 17259, 17261, 17262, 17263, 17319.
28 * Reverted change of ABI data structures for s390 and s390x:
29 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
30 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
31 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
32 are preserved pointing straight to the same implementation as the old ones.
33 Given that, new callers will simply provide a too-big buffer to these
34 functions. Any applications/libraries out there that embed jmp_buf or
35 ucontext_t in an ABI-relevant data structure that have already been rebuilt
36 against 2.19 headers will have to rebuilt again. This is necessary in any
37 case to revert the breakage in their ABI caused by the glibc change.
39 * Support for file description locks is added to systems running the
40 Linux kernel. The standard file locking interfaces are extended to
41 operate on file descriptions, not file descriptors, via the use of
42 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
43 are associated with an open file instead of a process.
45 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
47 * The minimum Linux kernel version that this version of the GNU C Library
48 can be used with is 2.6.32.
50 * Running the testsuite no longer terminates as soon as a test fails.
51 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
52 with PASS or FAIL lines for individual tests. A summary of the results is
53 printed, including a list of failing lists, and "make check" exits with
54 error status if there were any unexpected failures. "make check
55 stop-on-test-failure=y" may be used to keep the old behavior.
57 * The am33 port, which had not worked for several years, has been removed
60 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
61 supported; they now act the same as _DEFAULT_SOURCE (but generate a
62 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
63 conflicted with POSIX (support for which was removed in 2.19), the
64 interfaces those macros enabled remain available when compiling with
65 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
68 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
70 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
71 This may improve lock scaling of existing programs on TX capable systems.
72 The lock elision code is only built with --enable-lock-elision=yes and
73 then requires a GCC version supporting the TX builtins. With lock elision
74 default mutexes are elided via __builtin_tbegin, if the cpu supports
75 transactions. By default lock elision is not enabled and the elision code
78 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
79 copy the path argument. This allowed programs to cause posix_spawn to
80 deference a dangling pointer, or use an unexpected pathname argument if
81 the string was modified after the posix_spawn_file_actions_addopen
84 * All supported architectures now use the main glibc sysdeps directory
85 instead of some being in a separate "ports" directory (which was
86 distributed separately before glibc 2.17).
88 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
89 On configurations that support it (all Linux configurations), it's now
90 used regardless of the --enable-add-ons switch to configure. It is no
91 longer possible to build such configurations without pthreads support.
93 * Locale names, including those obtained from environment variables (LANG
94 and the LC_* variables), are more tightly checked for proper syntax.
95 setlocale will now fail (with EINVAL) for locale names that are overly
96 long, contain slashes without starting with a slash, or contain ".." path
97 components. (CVE-2014-0475) Previously, some valid locale names were
98 silently replaced with the "C" locale when running in AT_SECURE mode
99 (e.g., in a SUID program). This is no longer necessary because of the
102 * On x86-64, the dynamic linker's lazy-binding support is now compatible
103 with application code using Intel MPX instructions. (With all previous
104 versions, the MPX register state could be clobbered when making calls
105 into or out of a shared library.) Note that while the new dynamic
106 linker is compatible with all known x86 hardware whether or not it
107 supports Intel MPX, some x86 instruction-set emulators might fail to
108 handle the new instruction encodings. This is known to affect Valgrind
109 versions up through 3.9 (but will be fixed in the forthcoming 3.10
110 release), and might affect other tools that do instruction emulation.
112 * Support for loadable gconv transliteration modules has been removed.
113 The support for transliteration modules has been non-functional for
114 over a decade, and the removal is prompted by security defects. The
115 normal gconv conversion modules are still supported. Transliteration
116 with //TRANSLIT is still possible, and the //IGNORE specifier
117 continues to be supported. (CVE-2014-5119)
121 * The following bugs are resolved with this release:
123 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
124 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
125 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
126 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
127 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
128 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
129 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
130 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
131 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
132 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
133 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
134 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
135 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
136 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
137 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
138 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
139 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
140 16431, 16453, 16474, 16506, 16510, 16529
142 * Slovenian translations for glibc messages have been contributed by the
143 Translation Project's Slovenian team of translators.
145 * The public headers no longer use __unused nor __block. This change is to
146 support compiling programs that are derived from BSD sources and use
147 __unused internally, and to support compiling with Clang's -fblock
148 extension which uses __block.
150 * CVE-2012-4412 The strcoll implementation caches indices and rules for
151 large collation sequences to optimize multiple passes. This cache
152 computation may overflow for large collation sequences and may cause a
153 stack or buffer overflow. This is now fixed to use a slower algorithm
154 which does not use a cache if there is an integer overflow.
156 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
157 rules for large collation sequences to optimize multiple passes and falls
158 back to alloca if malloc fails, resulting in a possible stack overflow.
159 The implementation now falls back to an uncached collation sequence lookup
162 * CVE-2013-4788 The pointer guard used for pointer mangling was not
163 initialized for static applications resulting in the security feature
164 being disabled. The pointer guard is now correctly initialized to a
165 random value for static applications. Existing static applications need
166 to be recompiled to take advantage of the fix (bug 15754).
168 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
169 to the d_name member of struct dirent, or omit the terminating NUL
170 character. (Bugzilla #14699).
172 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
173 aligned_alloc functions could allocate too few bytes or corrupt the
174 heap when passed very large allocation size values (Bugzilla #15855,
177 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
178 for AF_INET6 has been fixed (Bugzilla #16072).
180 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
181 pap_CW, quz_PE, the_NP.
183 * Substantially revised locales: gd_GB, ht_HT
185 * The LC_ADDRESS field was updated to support country_car for almost all
188 * ISO 1427 definitions were updated.
190 * ISO 3166 definitions were updated.
192 * The localedef utility now supports --big-endian and --little-endian
193 command-line options to generate locales for a different system from that
194 for which the C library was built.
196 * Binary locale files now only depend on the endianness of the system for
197 which they are generated and not on other properties of that system. As a
198 consequence, binary files generated with new localedef may be incompatible
199 with old versions of the GNU C Library, and binary files generated with
200 old localedef may be incompatible with this version of the GNU C Library,
201 in the following circumstances:
203 + Locale files may be incompatible on m68k systems.
205 + Locale archive files (but not separate files for individual locales) may
206 be incompatible on systems where plain "char" is signed.
208 * The configure option --disable-versioning has been removed. Builds with
209 --disable-versioning had not worked for several years.
211 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
212 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
214 * SystemTap probes for malloc have been introduced.
216 * SystemTap probes for slow multiple precision fallback paths of
217 transcendental functions have been introduced.
219 * Support for powerpc64le has been added.
221 * The soft-float powerpc port now supports e500 processors.
223 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
225 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
226 set of header declarations that are enabled by default, even when other
227 feature test macros or compiler options such as -std=c99 would otherwise
228 disable some of those declarations.
230 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
231 conflict with POSIX. The libbsd-compat library (which was a dummy library
232 that did nothing) has also been removed.
234 * Preliminary documentation about Multi-Thread, Async-Signal and
235 Async-Cancel Safety has been added.
237 * Change of ABI data structures for s390 and s390x:
238 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
239 allow for future hardware extensions. All library functions that accept or
240 return these structures were versioned in order to provide backwards
241 compatibility with existing code. However, not all cases can be handled
242 with interface versioning. If an application embeds either structure into
243 another structure and that structure is passed to another compilation unit
244 which expects the newer larger-sized object then any access to the new
245 fields will result in undefined behaviour. Similarly any access to fields
246 that were moved by the enlarging of the structures will cause undefined
247 behaviour. To fix the undefined behaviour all objects that are part of the
248 final in-memory image must agree on the size of structures, and this may
249 require recompilation.
253 * The following bugs are resolved with this release:
255 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
256 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
257 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
258 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
259 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
260 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
261 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
262 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
263 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
264 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
265 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
266 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
267 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
270 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
271 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
272 Distributions can re-enable building and using pt_chown via the new configure
273 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
274 considerable security risks and should only be used if the distribution
275 understands and accepts the risks.
277 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
280 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
281 fixed (Bugzilla #15330).
283 * Add support for calling C++11 thread_local object destructors on thread
284 and program exit. This needs compiler support for offloading C++11
285 destructor calls to glibc.
287 * Improved worst case performance of libm functions with double inputs and
290 * Support for priority inherited mutexes in pthread condition variables on
291 non-x86 architectures.
293 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
295 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
297 * Optimized string functions for ARM. Implemented by Will Newton and
300 * Optimized libm functions for SPARC. Implemented by David S. Miller.
302 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
305 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
306 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
308 * Added a benchmark framework to track performance of functions in glibc.
310 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
311 It is based on draft TS 18661 and currently enabled as a GNU extension.
313 * On Linux, the clock function now uses the clock_gettime system call
314 for improved precision, rather than old times system call.
316 * Added support for version-3 tz format files. This is needed when using
317 the tz database release 2013e or later, and affects a few unusual cases --
318 currently only TZ='America/Godthab' for time stamps after 2037.
320 * Added new API functions pthread_getattr_default_np and
321 pthread_setattr_default_np to get and set the default pthread
322 attributes of a process.
324 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
325 This may improve lock scaling of existing programs on TSX capable systems.
326 When the --enable-lock-elision=yes parameter is specified at configure
327 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
330 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
331 availability). Implemented by Ryan S. Arnold.
333 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
337 * The following bugs are resolved with this release:
339 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
340 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
341 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
342 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
343 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
344 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
345 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
346 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
347 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
348 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
349 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
350 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
351 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
352 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
353 14879, 14889, 14893, 14898, 14914.
355 * Optimization of memcpy for MIPS.
357 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
358 EMFILE has been fixed (Bugzilla #14889).
360 * The add-on ports collection is now distributed in the "ports" subdirectory
361 of the main GNU C Library distribution, rather than separately.
363 * Port to ARM AArch64 contributed by Linaro.
365 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
366 Optimized versions of memcpy, memset, and memcmp added for System z10 and
368 Implemented by Andreas Krebbel.
370 * The new function secure_getenv allows secure access to the environment,
371 returning NULL if running in a SUID/SGID process. This function replaces
372 the internal function __secure_getenv.
374 * SystemTap static probes have been added into the dynamic linker.
375 Implemented by Gary Benson.
377 * Optimizations of string functions strstr, strcasestr and memmem.
378 Implemented by Maxim Kuvyrkov.
380 * The minimum Linux kernel version that this version of the GNU C Library
381 can be used with is 2.6.16.
383 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
384 powerpc POWER7. Implemented by Will Schmidt.
386 * New configure option --disable-nscd builds the C library such that it
387 never attempts to contact the Name Service Caching Daemon (nscd).
388 New configure option --disable-build-nscd avoids building nscd itself;
389 this is the default if --disable-nscd is used.
391 * Improved support for cross-compilation, including cross-testing and
392 bootstrap builds without a previously built glibc.
394 * Several testsuite tests are now able to test multiple IFUNC variants of an
395 interface, rather than just testing the one that would be chooen by
398 * New configure options --with-bugurl and --with-pkgversion, for
399 distributors to use to embed their bug-reporting and package version
400 information in --help and --version output.
402 * The ttyname and ttyname_r functions on Linux now fall back to searching for
403 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
404 allows creation of chroots without the procfs mounted on /proc.
406 * The `crypt' function now fails if passed salt bytes that violate the
407 specification for those values. On Linux, the `crypt' function will
408 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
409 enabled, and fail on encrypted strings using the MD5 or DES algorithm
410 when the mode is enabled.
412 * The `clock_*' suite of functions (declared in <time.h>) is now available
413 directly in the main C library. Previously it was necessary to link with
414 -lrt to use these functions. This change has the effect that a
415 single-threaded program that uses a function such as `clock_gettime' (and
416 is not linked with -lrt) will no longer implicitly load the pthreads
417 library at runtime and so will not suffer the overheads associated with
418 multi-thread support in other code such as the C++ runtime library.
420 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
425 * The following bugs are resolved with this release:
427 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
428 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
429 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
430 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
431 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
432 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
433 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
434 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
435 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
436 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
437 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
438 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
439 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
440 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
441 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
442 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
443 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
444 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
445 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
446 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
447 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
448 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
451 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
452 configuring glibc with:
453 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
454 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
455 Implemented by H.J. Lu.
459 + define static_assert
461 + do not declare gets
463 + declare at_quick_exit and quick_exit also for ISO C11
465 + aligned_alloc. NB: The code is deliberately allows the size parameter
466 to not be a multiple of the alignment. This is a moronic requirement
467 in the standard but it is only a requirement on the caller, not the
472 + uchar.h support added
474 + CMPLX, CMPLXF, CMPLXL added
476 Implemented by Ulrich Drepper.
478 * Support for the IA-64 has been moved to ports.
480 * Remove support for anything but ELF binary format
482 * Checking versions of poll, ppoll added.
483 Implemented by Ulrich Drepper.
485 * More generic and 64-bit performance optimizations to math functions.
486 Implemented by Ulrich Drepper.
488 * New configure option --enable-obsolete-rpc makes the deprecated RPC
489 headers and functions available at compile time as they were before
490 version 2.14. This option will be removed at some time in the future
491 after the TI-RPC library becomes fully sufficient for the needs of
492 existing applications.
494 * Compatibility code for Linux kernel versions before 2.4 has been removed.
495 Note that glibc is not expected to work with any Linux kernel version
498 * New header <sys/auxv.h> and function getauxval allowing easy access to
499 the AT_* key-value pairs passed from the Linux kernel. The header also
500 defines the HWCAP_* bits associated with the AT_HWCAP key.
502 * New locales: mag_IN
504 * New configure option --enable-systemtap builds SystemTap static probes
505 into libc for setjmp and longjmp and into libpthread for various operations.
506 So far the setjmp/longjmp probes and some of the libpthread probes are
507 provided only for i*86 and x86_64.
508 Implemented by Roland McGrath and Rayson Ho.
510 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
512 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
515 * More optimized functions for SPARC. Implemented by David S. Miller.
517 * Improved support for cross-compilation, especially bootstrap builds
518 without a previously built glibc.
520 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
521 Chris Metcalf from Tilera.
523 * Support for the old ARM ABI has been removed from ports. Only the EABI is
524 now supported for ARM processors.
526 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
527 as the name of the dynamic linker, to distinguish it from the
528 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
530 * Support for CRIS has been removed from ports.
532 * A new class of installed header has been documented for low-level
533 platform-specific functionality. PowerPC added the first instance with a
534 function to provide time base register access. Contributed by Tulio
535 Magno Quites Machado Filho.
537 * ix86 configurations now install header files that are consistent with
538 what x86-64 configurations install. These same header files can be used
539 for -m32, -m64, or -mx32 builds.
540 Contributed by H.J. Lu.
542 * Math library bug fixes. A thorough audit of all open math library bugs was
543 conducted by Joseph Myers. Significant progress was made on many math
544 library bugs resulting in more accurate exceptions and function results.
545 Many thanks to all those that contributed including Andreas Jaeger for his
546 patch review and work on the x87 trigonometric instruction issues.
548 * Timezone data is no longer installed. Timezone-related binaries and scripts
549 will continue to be installed. Users should obtain their timezone data from
550 their distribution provider or from the tzdata package at
551 <ftp://munnari.oz.au/pub/>.
555 * The following bugs are resolved with this release:
557 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
558 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
559 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
560 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
561 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
562 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
563 13484, 13506, 13515, 13523, 13524, 13538, 13540
565 * New program pldd to list loaded object of a process
566 Implemented by Ulrich Drepper.
568 * Add nss_db support back to glibc. No more dependency on Berkeley db
569 and support for initgroups lookups.
570 Implemented by Ulrich Drepper.
572 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
573 Contributed by HJ Lu.
575 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
576 Contributed by HJ Lu.
578 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
579 on x86-32 and x86-64.
580 Contributed by Liubov Dmitrieva.
582 * Optimized strchr and strrchr for SSE on x86-32.
583 Contributed by Liubov Dmitrieva.
585 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
586 for x86-64 and x86-32.
587 Contributed by Liubov Dmitrieva.
589 * New interfaces: scandirat, scandirat64
590 Implemented by Ulrich Drepper.
592 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
593 Implemented by Ulrich Drepper.
595 * nscd now also caches the netgroup database.
596 Implemented by Ulrich Drepper.
598 * Integrate libm with gcc's -ffinite-math-only option.
599 Implemented by Ulrich Drepper.
601 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
602 to math functions. Implemented by Ulrich Drepper.
604 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
605 Implemented by Ulrich Drepper.
607 * New Linux interfaces: process_vm_readv, process_vm_writev
609 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
610 Implemented by Ulrich Drepper.
612 * Optimized nearbyint and strcasecmp for PPC.
613 Implemented by Adhemerval Zanella.
615 * New locales: bho_IN, unm_US, es_CU, ta_LK
619 * The following bugs are resolved with this release:
621 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
622 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
623 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
624 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
625 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
626 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
627 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
628 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
629 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
630 12795, 12811, 12813, 12814, 12841
632 * The RPC implementation in libc is obsoleted. Old programs keep working
633 but new programs cannot be linked with the routines in libc anymore.
634 Programs in need of RPC functionality must be linked against TI-RPC.
635 The TI-RPC implementation is IPv6 enabled and there are other benefits.
637 Visible changes of this change include (obviously) the inability to link
638 programs using RPC functions without referencing the TI-RPC library and the
639 removal of the RPC headers from the glibc headers.
640 Implemented by Ulrich Drepper.
642 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
643 syncfs, setns, sendmmsg
645 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
646 yue_HK, lij_IT, mhr_RU
648 * New encodings: CP770, CP771, CP772, CP773, CP774
650 * New program sotruss to trace calls through PLTs
651 Implemented by Ulrich Drepper.
653 * The malloc hook implementation is marked deprecated and will be removed
654 from the default implementation in the next version. The design never
655 worked ever since the introduction of threads. Even programs which do
656 not create threads themselves can use multiple threads created internally.
660 * The following bugs are resolved with this release:
662 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
663 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
664 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
665 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
668 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
670 * POWER7 optimizations: memset, memcmp, strncmp
672 * New optimized string functions for x86-64: strnlen (SSE2),
673 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
674 Implemented by Ulrich Drepper.
678 * The following bugs are resolved with this release:
680 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
681 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
682 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
683 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
684 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
685 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
686 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
687 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
689 * New interfaces: pthread_getname_np, pthread_setname_np
691 * New Linux interface: recvmmsg
693 * STT_GNU_IFUNC implemented for Sparc by David Miller.
695 * The dynamic linker now recognizes supported ABI versions from the
696 EI_ABIVERSION field in the ELF header.
697 Implemented by Ulrich Drepper.
699 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
700 will not be used to fill in password fields in the passwd.byname replies.
701 Instead it is used to synthesize the shadow.byname table, should it be
702 missing. This is a useful mode in some installations involving Solaris.
703 Implemented by Ulrich Drepper.
705 * New locales: kok_IN, sq_MK, cv_RU
709 * The following bugs are resolved with this release:
711 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
712 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
713 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
714 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
715 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
716 10789, 10817, 10823, 10840, 10847
718 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
720 Implemented by Ulrich Drepper.
722 * Checking version of longjmp added that fails if an uninitialized stack
723 frame would be created. Implemented by Ulrich Drepper.
725 * STT_GNU_IFUNC is now supported in static executables.
726 Implemented by H.J. Lu.
728 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
730 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
731 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
732 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
733 Contributed by H.J. Lu.
735 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
736 Implemented by Ulrich Drepper.
738 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
740 Contributed by H.J. Lu.
742 * Support for fma instruction in AVX on x86-64.
743 Implemented by H.J. Lu and Ulrich Drepper.
745 * AVX support in x86-64 auditing support in ld.so.
746 Implemented by H.J. Lu.
748 * STB_GNU_UNIQUE support added.
749 Implemented by Ulrich Drepper.
751 * Implement second fallback mode for optimized DNS lookup for even more
752 broken environments. If two requests from the same port are not
753 handled correctly close the socket and open a new one before sending
754 the second request. The 'single-request-reopen' option in /etc/resolv.conf
755 can be used to select this mode right away, instead of rediscovering the
756 necessity is every process again.
757 Implemented by Ulrich Drepper.
759 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
760 Implemented by Adam Tkac.
762 * Optimized iconv conversions for S390x.
763 Implemented by Andreas Krebbel.
765 * Using condvars with PI mutexes is now more efficient due to kernel
766 support for requeueing to PI futexes. NPTL support added for x86-64.
767 Implemented by Ulrich Drepper.
769 * New locales: ps_AF, my_MM
773 * The following bugs are resolved with this release:
775 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
776 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
777 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
778 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
779 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
781 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
782 Implemented by Ulrich Drepper.
784 * New Linux interfaces: accept4, fallocate, fallocate64.
785 Implemented by Ulrich Drepper.
787 * Correct declarations of string function when used in C++ code. This
788 could lead to compile errors for invalid C++ code.
790 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
793 * New POSIX 2008 interface: psiginfo
794 Implemented by Ulrich Drepper.
796 * New ISO C++1x interfaces: quick_exit, at_quick_exit
797 Implemented by Ulrich Drepper.
799 * Support for selecting between multiple function definitions at runtime
800 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
802 * The libcrypt library can now use the hash function implementations in
803 NSS. Implemented by Ulrich Drepper.
805 * The malloc implementation can be compiled to be less memory efficient
806 but higher performing in multi-threaded programs.
807 Implemented by Ulrich Drepper.
809 * New locales: nan_TW@latin, ks_IN
811 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
812 Implemented by Ulrich Drepper.
814 * Extended printf hook support. It is possible to use user-defined types
815 and extend existing format specifiers.
816 Implemented by Ulrich Drepper.
818 * Handling for group shadow files has been added.
819 Implemented by Ulrich Drepper.
821 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
822 servers (the case, e.g., for some people using the built-in DNS
823 server in ADSL modems/routers). There is a once-per-process timeout
824 in case of a broken server. To avoid it, users can run nscd or put
825 'options single-request' in /etc/resolv.conf.
826 Implemented by Ulrich Drepper.
830 * The following bugs are resolved with this release:
832 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
833 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
834 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
835 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
836 6968, 6974, 6980, 6995, 7008, 7009, 7029
838 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
839 up at the same time. Implemented by Ulrich Drepper.
841 * TLS descriptors for LD and GD on x86 and x86-64.
842 Implemented by Alexandre Oliva.
844 * getaddrinfo now handles DCCP and UDPlite.
845 Implemented by Ulrich Drepper.
847 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
848 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
849 Implemented by Ulrich Drepper.
851 * New implementation of memmem, strstr, and strcasestr which is O(n).
852 Implemented by Eric Blake.
854 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
856 * Implement "e" option for popen to open file descriptor with the
857 close-on-exec flag set. Implemented by Ulrich Drepper.
859 * Implement "b" mode for fmemopen. In this mode writes writes don't
860 implicitly add a NUL byte and seeks from the end of the buffer really
861 use the buffer end, not the string length as the basis.
862 Implemented by Ulrich Drepper.
864 * Many functions, exported and internal, now atomically set the close-on-exec
865 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
867 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
869 Implemented by Pravin Satpute.
871 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
875 * The following bugs are resolved with this release:
877 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
878 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
879 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
880 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
881 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
882 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
883 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
885 * New locales: bo_CN, bo_IN, shs_CA.
887 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
889 * Sorting rules for some Indian languages (Devanagari and Gujarati).
890 Implemented by Pravin Satpute.
892 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
894 * nscd caches now all timeouts for DNS entries
895 Implemented by Ulrich Drepper.
897 * nscd is more efficient and wakes up less often.
898 Implemented by Ulrich Drepper.
900 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
901 vdprintf, and obstack_vprintf.
902 Implemented by Jakub Jelinek.
904 * Faster memset for x86-64.
905 Implemented by Harsha Jagasia and H.J. Lu.
907 * Faster memcpy on x86.
908 Implemented by Ulrich Drepper.
910 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
911 Implemented by Ulrich Drepper.
913 * Faster sqrt and sqrtf implemention for some PPC variants.
914 Implemented by Steven Munroe.
918 * The following bugs are resolved with this release:
920 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
921 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
922 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
923 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
924 5071, 5103, 5104, 5112, 5113, 5184, 5186
926 * More checking functions: fread, fread_unlocked, open*, mq_open.
927 Implemented by Jakub Jelinek and Ulrich Drepper.
929 * Extend fortification to C++. Implemented by Jakub Jelinek.
931 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
932 by not recognizing 'a' as a modifier when those specs are requested.
933 Implemented by Jakub Jelinek.
935 * PPC optimizations to math and string functions.
936 Implemented by Steven Munroe.
938 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
939 options to be passed. Implemented by Ulrich Drepper.
941 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
943 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
944 Implemented by Ulrich Drepper.
946 * Handle private futexes in the NPTL implementation.
947 Implemented by Jakub Jelinek and Ulrich Drepper.
949 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
950 Implemented by Roland McGrath and Ulrich Drepper.
952 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
954 * SHA-256 and SHA-512 based password encryption.
955 Implemented by Ulrich Drepper.
957 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
958 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
961 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
962 Implemented by Ulrich Drepper.
966 * The following bugs are resolved with this release:
968 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
969 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
970 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
971 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
972 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
973 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
974 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
977 * New Linux interfaces: epoll_pwait, sched_getcpu.
979 * New generic interfaces: strerror_l.
981 * nscd can now cache the services database. Implemented by Ulrich Drepper.
985 * The following bugs are resolved with this release:
987 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
988 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
989 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
990 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
991 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
992 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
993 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
994 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
995 3225, 3251, 3252, 3253, 3273
997 * For Linux, the sorting of addresses returned by getaddrinfo now also
998 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
999 Implemented by Ulrich Drepper.
1001 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
1002 Implemented by Ulrich Drepper.
1004 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
1006 * New iconv module for MIK. Contributed by Alexander Shopov.
1008 * For sites with broken group and/or passwd database, the auto-propagate
1009 option of nscd can prevent creating ID lookup entries from the results
1010 of a name lookup and vice versa. This usually is no problem but some
1011 site might have problems with the default behavior.
1012 Implemented by Ulrich Drepper.
1014 * Iterating over entire database in NIS can be slow. With the
1015 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
1016 to trade time for memory. The entire database will be read at once.
1017 Implemented by Ulrich Drepper.
1019 * The interfaces introduced in RFC 3542 have been implemented by
1022 * Support for the new ELF hash table format was added by Ulrich Drepper.
1024 * Support for priority inheritance mutexes added by Jakub Jelinek and
1027 * Support for priority protected mutexes added by Jakub Jelinek.
1029 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1030 or_IN, csb_PL, fy_NL, sr_ME.
1034 * More overflow detection functions.
1036 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1037 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1039 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1040 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1041 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1042 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1043 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1044 by Masahide Washizawa.
1046 * It is now possible to install audit libraries for the dynamic linker using
1047 LD_AUDIT. Implemented by Ulrich Drepper.
1049 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1050 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1051 For a libc and libpthread that works well on Linux 2.4 kernels, we
1052 recommend using the stable 2.3 branch.
1054 * The new function open_wmemstream acts like open_memstream,
1055 but uses a wchar_t wide character buffer.
1057 * The new function ppoll is an improved version of poll, similar to pselect.
1059 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1060 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1061 renameat, unlinkat, linkat, symlinkat, readlinkat.
1063 * New Linux kernel system calls: unshare,
1064 inotify_init, inotify_add_watch, inotify_rm_watch.
1066 * The euidaccess function is now also known by the alias eaccess,
1067 for compatibility with some other systems.
1069 * Timezone data updated to 2006b version.
1073 * The following bugs are resolved with this release:
1075 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1076 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1077 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1078 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1079 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1080 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1082 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1084 * As of this release, GCC 4 can be used to compile the C Library.
1086 * Timezone data updated to 2005m version.
1090 * The following bugs are resolved with this release:
1092 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1093 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1094 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1095 777, 787, 821, 822, 823, 825
1097 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1101 * Support for RFC 3678. Real implementations exist only for Linux so far.
1102 Implemented by Ulrich Drepper.
1104 * nscd can now cache entries persistently. Expiring entries are reloaded.
1105 For speedups the cache can be shared in memory with client processes.
1106 Implemented by Ulrich Drepper.
1108 * nscd can now perform SELinux checks.
1109 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1111 * getaddrinfo queries are now cached. Canonical name lookup is performed
1113 Implemented by Ulrich Drepper.
1115 * The nothrow function attribute is used when headers are used by gcc when
1116 compiling C code. This can avoid significant amounts of exception
1119 * The malloc functions perform more error checking and are stricter when
1120 it comes to reacting on errors. The default action is to terminate
1121 the process after showing an error message. Implemented by Ulrich Drepper.
1123 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1124 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1126 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1127 namespaces using the new function dlmopen(). This feature is of course,
1128 like most other dynamic loading functionality, not available in statically
1129 linked applications. Implemented by Ulrich Drepper.
1131 * Low-overhead boundary checking variants of string and some stdio functions
1132 were added. These are to be used in conjunction with a gcc patch by
1133 Jakub Jelinek which adds calls to these functions if possible.
1134 Implemented by Jakub Jelinek and Ulrich Drepper.
1136 * Old code for several operating systems and machine architectures that
1137 have not been in working condition in a long time have been removed from
1138 the main source tree maintained by the GNU C Library's maintainers.
1139 These files are now reside in the separate `ports' source module
1140 that is usable as an add-on when building the library.
1144 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1145 interrogate the dynamic linker, compatible with the Solaris interface.
1147 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1148 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1150 * getifaddrs now uses the netlink interface on Linux to get its information.
1151 Implemented by Thorsten Kukuk.
1153 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1154 Implemented by Ulrich Drepper.
1156 * support for non-executable stacks on x86 has been added. Changes mostly
1159 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1162 * getaddrinfo now performs destination address selection according to
1167 * Thread-safe interfaces for many functions that access locale data
1168 were added in version 2.3, but these features were omitted from NEWS.
1169 Many functions have variants with an `_l' suffix that take a `locale_t'
1170 object as a parameter rather than consulting the current locale.
1171 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1172 create and maintain `locale_t' objects. Additionally, the new function
1173 `uselocale' sets "the current locale" (as used by functions not so
1174 parameterized) set for an individual thread. These features were added
1175 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1177 * The functions getresuid, getresgid, setresuid, and setresgid, which
1178 have long been available on Linux, are now declared in <unistd.h>
1179 and are now also available on the Hurd.
1181 * ELF thread-local storage support (TLS) now works on x86-64.
1183 * The new dynamic string token $LIB is expanded in shared library names.
1184 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1186 * Aldy Hernandez contributed complete software floating point support for
1187 PowerPC machines with no FPU.
1189 * fexecve is implemented on Linux.
1191 * The `btowc' function should work at least twice as fast due to
1192 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1194 * With approriate thread add-ons cancelable functions are now implemented
1195 in libc.so as well. No need to call the function in libpthread. This
1196 change allowed to finally disable the incorrect and expensive handling
1197 of weak definition in ld.so.
1199 * Yet more PLT entries in libc.so have been removed. We finally arrived
1200 at the bare minimum. Startup times improved appropriately.
1202 * Support for the new Linux/x86 system call interface was added. The
1203 AT_SYSINFO auxiliary vector entry is recognized and handled.
1207 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1210 * iconv (the program and the interface) now accepts empty names (excluding
1211 options like //TRANSLIT) to mean "use charset of current locale".
1213 * localedef can now transliterate characters in strings which are not in
1214 the provided charmap. The information from the input locale is used.
1216 * Prelinking support was added for ELF targets. This requires additional
1217 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1219 * Read-only stdio streams now use mmap to speed up operation by eliminating
1220 copying and buffer underflows. To use add 'm' to the mode string of
1221 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1223 * The malloc functions were completely rewritten by Wolfram Gloger based
1224 on Doug Lea's malloc-2.7.0.c.
1226 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1227 implementation of regex.
1229 * Bruno Haible upgraded the iconv and locale implementation to support
1232 * Contents of the LC_* and LANG environment variables in the CEN style are
1233 not recognized anymore. It never was used. Change by Ulrich Drepper.
1235 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1236 thread-local storage (TLS) ABI on some platforms.
1237 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1239 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1240 EUC-JISX0213, and TSCII.
1242 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1243 BSD-compatible interface for getting all network interface addresses.
1244 Implementation for IPv4 by Roland McGrath.
1246 * Loading of locale data is faster due to the introduction of a locale
1247 archive. Implemented by Roland McGrath and Ulrich Drepper.
1249 * Startup times are significantly reduced by not using exported functions
1250 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1253 * Steven Munroe contributed a port to PowerPC64/Linux.
1257 * The Hurd now uses the GNU libio implementation of stdio rather than the
1258 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1260 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1261 with the same behavior as the Linux system call of the same name.
1265 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1266 128-bit long double format.
1268 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1269 IBM1161, and IBM1162 charsets.
1271 * Andreas Jaeger contributed a port to x86-64/Linux.
1273 * Peter Bruin contributed a port to PowerPC/Hurd.
1275 * libc functions using I/O streams now can handle wide-oriented streams
1278 * optimizations in the dynamic linker. Binaries created by recent binutils
1279 versions start up quicker due to reduced time spent on relocations.
1281 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1285 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1286 asinh, atanh, j0 for the 128-bit long double format.
1288 * Bruno Haible updated all the code handling Unicode in some form to
1289 support Unicode 3.1.
1291 * Speed of regex for single-byte locales is back to previous levels.
1292 Patch by Isamu Hasegawa.
1294 * Alpha, SPARC, and IA-64 now also using floating stacks.
1296 * Startup time of internationalized applications greatly improved through
1297 iconv cache. Use iconvconfig to generate the cache file.
1298 Contributed by Ulrich Drepper.
1300 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1301 severe performance problems. Patch by David Mosberger.
1303 * The Hurd port got a lot more functionality like AIO, various stdio
1304 extensions, etc. Mainly done by Roland McGrath.
1306 * mtrace can now lookup symbols in shared libraries.
1310 * Intel's IA-64 math library is largely integrated. It provides fast and
1311 accurate implementatations for most basic and standard math functions
1312 in float, double, and long double format.
1314 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1315 and asin for the 96-bit long double format and asin, log, tan for the
1316 128-bit long double format.
1318 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1319 The basic double functions exist today. Contributed by Abraham Ziv
1320 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1321 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1323 * An asynchronous name lookup library was added. The interface is designed
1324 after POSIX AIO. The proposal was circulated beforehand to get comments.
1325 No negative ones came in. Implemented by Ulrich Drepper.
1327 * Port to S390/64bit contributed by Martin Schwidefsky
1328 <schwidefsky@de.ibm.com>.
1330 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1331 of functions for Linux/IA-64.
1333 * The RPC code is now thread safe. Threads can now use the same service
1334 of different services at the same time. Patch by Eric Norum
1335 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1337 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1338 family of functions for Linux/S390.
1340 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1341 of functions for Linux/x86.
1343 * Port to Linux/CRIS contributed by Axis Communications.
1347 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1348 we can now check for namespace violations and missing declarations. The
1349 result is that almost all headers are now Unix-compliant (as defined in
1350 the upcoming XPG6). The negative side is that some programs might need
1351 corrections, too, if they depend on the incorrect form of the headers in
1352 previous versions which defined too many symbols and included too many
1355 * regex now handles multibyte character sets correctly.
1356 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1358 * iconv (the program) does now conform to the upcoming XPG6 and handles
1359 charmaps. Instead of the charset names the path of charmaps can be
1360 provided and the conversion happens based on this data.
1361 Contributed by Ulrich Drepper.
1363 * The locale program now provides detailed information about the installed
1368 only lists the names of the supported locales
1372 provides details such as country, language, and codeset name.
1373 Contributed by Ulrich Drepper.
1377 * The gencat program now parses the input file according to the charset
1378 selected by the LC_CTYPE category. This is important for stateful
1379 character sets. To make generating catalogs easier there is a way
1380 to overwrite the charset selected by the locale: before the first
1381 message or $ quote line the catalog can contain a line like
1383 $ codeset=ISO-8859-2
1385 to select the charset (ISO-8859-2 in this case).
1387 Implemented by Shinya Hanataka and Ulrich Drepper.
1389 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1390 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1391 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1393 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1394 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1396 * The LANGUAGE environment variable is now ignored unless the locale is
1397 changed from the default "C" locale.
1399 * The usual bug fixes.
1403 * Greg McGary added runtime support for bounds checking using gcc's
1404 new -fbounded-pointers option. ix86 target is complete. PowerPC
1407 * Thorsten Kukuk added secure mode support to nscd.
1409 * The Berkeley db libraries have been removed.
1411 Related, the nss_db module is now in a separate package since it
1412 obviously requires a database library being available.
1414 * Wide character I/O streams implemented by Ulrich Drepper.
1416 * Functions from the extended socket API added by Ulrich Drepper.
1418 * Functions feenableexcept and fedisableexcept to control the
1419 behaviour of individual exceptions have been added by Andreas Jaeger.
1421 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1423 * The resolver code has been updated from bind 8.2.3-T5B which supports
1424 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1427 This change could in some situations effect backward compatibility. Since
1428 now `_res' is a thread-local instead of a global variable, modifying it
1429 in one thread does not have any effect in other threads.
1431 The resolver library was also extended to allow IPv6 as the transport
1432 protocol for the requests. This work was done by Stig Venaas.
1434 * Compatibility code for K&R C compilers has been removed from the
1435 header files. A ISO C compiler is needed to use the library
1436 (conforming to either C89 or C99 standard).
1438 * Complete rewrite of the localedef program to support multibyte character
1439 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1440 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1441 Implemented by Ulrich Drepper.
1443 Bruno Haible significantly improved the generation and use of the data
1444 structures for the wide character tables.
1446 * Plural handling in gettext implemented by Ulrich Drepper.
1448 * The utmp daemon has been removed.
1450 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1452 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1455 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1457 * POSIX barriers implemented by Kaz Kylheku.
1459 * POSIX spawn function family implemented by Ulrich Drepper.
1461 * POSIX spinlocks are now available.
1463 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1465 * the configure option --enable-kernel=X.Y.Z allows to strip out
1466 compatibility for kernel versions before X.Y.Z. This is currently only
1467 implemented for Linux.
1469 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1470 field sin6_scope_id. This means that all programs using IPv6 should be
1471 recompiled. Don't expect binary compatibility with previous glibc
1474 * various conversion modules for IBM character sets contributed by
1477 * IA-64 port by Jes Sorensen and HJ Lu.
1491 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1493 * New xdr functions are added; some rpc functions are now 64bit clean.
1495 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1497 * Fixed known incompatibilities with glibc 2.0.
1499 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1501 * Optimized a number of functions (especially the ELF dynamic loader).
1503 * Update timezone data files.
1505 * lots of charmaps corrections
1507 * some new locale definitions and charmaps
1512 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1513 conform to POSIX member type requirements. Symbol versions have been
1514 adjusted as needed within the library, and for direct use by applications,
1515 but there is potential for problems if third-party libraries use
1516 struct timeval as part of their interface. This does not present
1517 a problem for X and other "essential" system libraries.
1519 * An additional locale model to support C++ Standard Library locale
1520 model and probably more was implemented by Ulrich Drepper.
1522 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1525 * Miles Bader provided the `argp' function family to support hierachical
1526 command line argument parsing, layered on top of getopt.
1528 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1530 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1533 * scanf recognizes the %a and %A format for scanning floating point numbers.
1535 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1536 information and interfaces for the available integer types.
1538 * about 130 new math functions were added to implement the ISO C9x math
1541 * the new header <complex.h> contains definitions of the complex math
1542 functions from ISO C 9X.
1544 * the new header <tgmath.h> defines generic macros to use complex or
1545 real valued functions.
1547 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1549 * Andreas Jaeger provided a test suite for the math library.
1551 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1553 * Ulrich Drepper added character set conversion functions (iconv).
1555 * Optimized string functions have been added.
1557 * The localedata addon is now part of glibc.
1559 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1561 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1562 daemon for NSS (nscd).
1564 Missing a better place here are some numbers on improvements. Under
1565 Linux 2.1.125 un-tar-ing the kernel sources takes
1569 using local files 12.19s 6.88s 22.91s
1571 using NIS 13.92s 8.91s 26.34s
1573 using NIS & nscd 10.37s 7.34s 25.30s
1575 using NIS+ 27.57s 30.37s 640.46s
1577 using NIS+ & nscd 10.25s 7.83s 26.51s
1579 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1581 Keep in mind that non-namelookup related operations dominate above times.
1582 It was just a common complain that using NIS+ unpacking the kernel is
1585 [1] The old nscd implementation is not available anymore since it was
1586 distributed with glibc up to version 2.0.98 and thus is now replaced.
1588 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1590 * Mark Kettenis provided a Hesiod NSS module.
1592 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1593 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1595 * rcmd can now handle netgroups (Dick Streefland).
1597 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1600 * Support for the IPv6 protocol has been added to the socket API, as per the
1601 latest draft standards.
1603 * Support for Linux 2.2 has been added.
1605 * Interface changes relative to the latest 2.0.x release:
1606 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1607 addseverity NEW: Unix98
1608 alphasort64 NEW: LFS
1609 argp_err_exit_status NEW: argp, GNU ext
1610 argp_error NEW: argp, GNU ext
1611 argp_failure NEW: argp, GNU ext
1612 argp_help NEW: argp, GNU ext
1613 argp_parse NEW: argp, GNU ext
1614 argp_program_bug_address NEW: argp, GNU ext
1615 argp_program_version NEW: argp, GNU ext
1616 argp_program_version_hook NEW: argp, GNU ext
1617 argp_state_help NEW: argp, GNU ext
1618 argp_usage NEW: argp, GNU ext
1619 authdes_create NEW: Secure RPC
1620 authdes_getucred NEW: Secure RPC
1621 authdes_pk_create NEW: Secure RPC
1622 backtrace NEW: GNU ext.
1623 backtrace_symbols NEW: GNU ext.
1624 backtrace_symbols_fd NEW: GNU ext.
1626 cacosf NEW: ISO C 9x
1627 cacosh NEW: ISO C 9x
1628 cacoshf NEW: ISO C 9x
1629 cacoshl NEW: ISO C 9x
1630 cacosl NEW: ISO C 9x
1637 casinf NEW: ISO C 9x
1638 casinh NEW: ISO C 9x
1639 casinhf NEW: ISO C 9x
1640 casinhl NEW: ISO C 9x
1641 casinl NEW: ISO C 9x
1643 catanf NEW: ISO C 9x
1644 catanh NEW: ISO C 9x
1645 catanhf NEW: ISO C 9x
1646 catanhl NEW: ISO C 9x
1647 catanl NEW: ISO C 9x
1648 cbc_crypt NEW: Secure RPC
1652 ccoshf NEW: ISO C 9x
1653 ccoshl NEW: ISO C 9x
1659 cimagf NEW: ISO C 9x
1660 cimagl NEW: ISO C 9x
1661 clearerr_locked REMOVED
1662 clntunix_create NEW: sunrpc ext
1664 clog10 NEW: ISO C 9x
1665 clog10f NEW: ISO C 9x
1666 clog10l NEW: ISO C 9x
1676 cprojf NEW: ISO C 9x
1677 cprojl NEW: ISO C 9x
1679 crealf NEW: ISO C 9x
1680 creall NEW: ISO C 9x
1685 csinhf NEW: ISO C 9x
1686 csinhl NEW: ISO C 9x
1689 csqrtf NEW: ISO C 9x
1690 csqrtl NEW: ISO C 9x
1694 ctanhf NEW: ISO C 9x
1695 ctanhl NEW: ISO C 9x
1697 des_setparity NEW: Secure RPC
1698 ecb_crypt NEW: Secure RPC
1699 endutxent NEW: Unix98
1701 exp10f NEW: ISO C 9x
1702 exp10l NEW: ISO C 9x
1706 fattach NEW: STREAMS
1707 fdetach NEW: STREAMS
1711 feclearexcept NEW: ISO C 9x
1712 fegetenv NEW: ISO C 9x
1713 fegetexceptflag NEW: ISO C 9x
1714 fegetround NEW: ISO C 9x
1715 feholdexcept NEW: ISO C 9x
1717 feraiseexcept NEW: ISO C 9x
1718 ferror_locked REMOVED
1719 fesetenv NEW: ISO C 9x
1720 fesetexceptflag NEW: ISO C 9x
1721 fesetround NEW: ISO C 9x
1722 fetestexcept NEW: ISO C 9x
1723 feupdateenv NEW: ISO C 9x
1724 fflush_locked REMOVED
1728 fgets_unlocked NEW: GNU ext.
1729 fileno_locked REMOVED
1741 fputc_locked REMOVED
1742 fputs_unlocked NEW: GNU ext.
1743 fread_unlocked NEW: GNU ext.
1748 fstatvfs NEW: Unix98
1752 ftruncate64 NEW: LFS
1754 fwrite_unlocked NEW: GNU ext.
1755 gai_strerror NEW: IPv6
1759 getchar_locked REMOVED
1761 getdate_err NEW: Unix98
1762 getdate_r NEW: GNU ext.
1764 getnameinfo NEW: IPv6
1765 getnetname NEW: Secure RPC
1766 getpmsg NEW: STREAMS
1767 getpt NEW: Unix98 PTY
1768 getrlimit64 NEW: LFS
1769 getutxent NEW: Unix98
1770 getutxid NEW: Unix98
1771 getutxline NEW: Unix98
1772 glob64 NEW: GNU ext.
1773 globfree64 NEW: GNU ext.
1774 gnu_get_libc_release NEW: GNU ext.
1775 gnu_get_libc_version NEW: GNU ext.
1776 grantpt NEW: Unix98 PTY
1777 host2netname NEW: Secure RPC
1779 iconv_close NEW: iconv
1780 iconv_open NEW: iconv
1781 if_freenameindex NEW: IPv6
1782 if_indextoname NEW: IPv6
1783 if_nameindex NEW: IPv6
1784 if_nametoindex NEW: IPv6
1785 in6addr_any NEW: IPv6
1786 in6addr_loopback NEW: IPv6
1787 inet6_isipv4mapped NEW: IPv6
1788 isastream NEW: STREAMS
1789 iswblank NEW: GNU ext.
1790 key_decryptsession NEW: Secure RPC
1791 key_decryptsession_pk NEW: Secure RPC
1792 key_encryptsession NEW: Secure RPC
1793 key_encryptsession_pk NEW: Secure RPC
1794 key_gendes NEW: Secure RPC
1795 key_get_conv NEW: Secure RPC
1796 key_secretkey_is_set NEW: Secure RPC
1797 key_setnet NEW: Secure RPC
1798 key_setsecret NEW: Secure RPC
1799 llrint NEW: ISO C 9x
1800 llrintf NEW: ISO C 9x
1801 llrintl NEW: ISO C 9x
1802 llround NEW: ISO C 9x
1803 llroundf NEW: ISO C 9x
1804 llroundl NEW: ISO C 9x
1809 lrintf NEW: ISO C 9x
1810 lrintl NEW: ISO C 9x
1811 lround NEW: ISO C 9x
1812 lroundf NEW: ISO C 9x
1813 lroundl NEW: ISO C 9x
1815 makecontext NEW: Unix98
1816 mempcpy NEW: GNU ext.
1819 modify_ldt NEW: kernel
1823 nearbyint NEW: ISO C 9x
1824 nearbyintf NEW: ISO C 9x
1825 nearbyintl NEW: ISO C 9x
1826 netname2host NEW: Secure RPC
1827 netname2user NEW: Secure RPC
1828 nexttoward NEW: ISO C 9x
1829 nexttowardf NEW: ISO C 9x
1830 nexttowardl NEW: ISO C 9x
1834 passwd2des NEW: Secure RPC
1836 pow10f NEW: GNU ext.
1837 pow10l NEW: GNU ext.
1840 printf_size NEW: GNU ext.
1841 printf_size_info NEW: GNU ext.
1842 profil_counter REMOVED
1843 pthread_mutexattr_getkind_np REPLACED
1844 pthread_mutexattr_setkind_np REPLACED
1845 ptsname NEW: Unix98 PTY
1846 ptsname_r NEW: Unix98 PTY
1848 putchar_locked REMOVED
1849 putgrent NEW: GNU ext.
1851 putpmsg NEW: STREAMS
1852 pututxline NEW: Unix98
1856 readdir64_r NEW: LFS
1857 remquo NEW: ISO C 9x
1858 remquof NEW: ISO C 9x
1859 remquol NEW: ISO C 9x
1861 roundf NEW: ISO C 9x
1862 roundl NEW: ISO C 9x
1864 scalbln NEW: ISO C 9x
1865 scalblnf NEW: ISO C 9x
1866 scalblnl NEW: ISO C 9x
1868 sendfile NEW: kernel
1869 setcontext NEW: Unix98
1870 setrlimit64 NEW: LFS
1871 setutxent NEW: Unix98
1873 sigignore NEW: Unix98
1874 sigqueue NEW: POSIX.1b
1875 sigrelse NEW: Unix98
1876 sigset NEW: POSIX.1b
1877 sigtimedwait NEW: POSIX.1b
1878 sigwaitinfo NEW: POSIX.1b
1879 sincos NEW: GNU ext.
1880 sincosf NEW: GNU ext.
1881 sincosl NEW: GNU ext.
1885 strcasestr NEW: GNU ext.
1886 strtoimax NEW: ISO C 9x
1887 strtoumax NEW: ISO C 9x
1888 strverscmp NEW: GNU ext.
1889 svcauthdes_stats NEW: Secure RPC
1890 svcunix_create NEW: sunrpc etx
1891 svcunixfd_create NEW: sunrpc ext
1892 swapcontext NEW: Unix98
1893 tcgetsid NEW: Unix98 PTY
1894 tdestroy NEW: GNU ext.
1895 tgamma NEW: ISO C 9x
1896 tgammaf NEW: ISO C 9x
1897 tgammal NEW: ISO C 9x
1901 truncf NEW: ISO C 9x
1902 truncl NEW: ISO C 9x
1904 unlockpt NEW: Unix98 PTY
1905 updwtmpx NEW: Unix98
1906 user2netname NEW: Secure RPC
1907 utmpxname NEW: Unix98
1908 versionsort NEW: GNU ext.
1909 versionsort64 NEW: GNU ext.
1911 wcscasecmp NEW: GNU ext.
1912 wcsncasecmp NEW: GNU ext.
1913 wcsnlen NEW: GNU ext.
1914 wcstoimax NEW: ISO C 9x
1915 wcstoll NEW: ISO C 9x
1916 wcstoull NEW: ISO C 9x
1917 wcstoumax NEW: ISO C 9x
1919 wordexp NEW: POSIX.2
1920 wordfree NEW: POSIX.2
1921 write_profiling REMOVED
1922 xdecrypt NEW: Secure RPC
1923 xdr_authdes_cred NEW: Secure RPC
1924 xdr_authdes_verf NEW: Secure RPC
1925 xdr_cryptkeyarg NEW: Secure RPC
1926 xdr_cryptkeyarg2 NEW: Secure RPC
1927 xdr_cryptkeyres NEW: Secure RPC
1928 xdr_getcredres NEW: Secure RPC
1929 xdr_key_netstarg NEW: Secure RPC
1930 xdr_key_netstres NEW: Secure RPC
1931 xdr_keybuf NEW: Secure RPC
1932 xdr_keystatus NEW: Secure RPC
1933 xdr_netnamestr NEW: Secure RPC
1934 xdr_sizeof NEW: Secure RPC
1935 xdr_unixcred NEW: sunrpc ext
1936 xencrypt NEW: Secure RPC
1937 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1948 * inet_ntoa is thread-safe
1950 * updwtmp is moved from libutil to libc
1952 * rewrite of cbrt function
1954 * update of timezone data
1968 * add atoll function
1970 * fix complex problems in Berkeley DB code
1972 * fix math functions
1976 * fixed lots of header problems (especially Linux/GNU specific)
1978 * dynamic loader preserves all registers
1980 * Roland McGrath provided support for handling of auxiliary objects in
1981 the ELF dynamic loader.
1983 * support for parallel builds is improved
1987 * GNU extensions are no longer declared by default. To enable them you
1988 must define the macro `_GNU_SOURCE' in your program or compile with
1991 * The library has changed from using GNU ld symbol aliases to using weak
1992 symbols where available. The ELF object file format supports weak
1993 symbols; GNU ld also supports weak symbols in the a.out format. (There
1994 is also now support for other GNU ld extensions in ELF. Use the
1995 `--with-elf' option to configure to indicate you have ELF, and
1996 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1997 of many files which contained only symbol aliases, reducing the size of
1998 the source and the compiled library; many other files were renamed to
1999 less cryptic names previously occupied by the symbol alias files.
2000 There is a new header file <elf.h> for programs which operate on
2001 files in the ELF format.
2003 * Converted to Autoconf version 2, so `configure' has more options.
2004 Run `configure --help' to see the details.
2006 * The library can now be configured to build profiling, highly-optimized
2007 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
2008 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
2009 `configure' enable building these extra libraries. The shared library is
2010 built by default when using both ELF and GNU ld. When shared libraries
2011 are enabled, the new library `-ldl' is available for arbitrary run-time
2012 loading of shared objects; its interface is defined in <dlfcn.h>. The
2013 new header file <link.h> gives access to the internals of the run-time
2014 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
2015 application of same name on other systems and it provides information
2016 about dynamically linked binaries.
2018 * The C library now provides the run-time support code for profiling
2019 executables compiled with `-pg'. Programs can control the profiling code
2020 through the interface in <sys/gmon.h>. The `gmon.out' files written by
2021 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
2022 the support for this file format was contributed by David Mosberger-Tang.
2024 * The math code has been replaced with a math library based on fdlibm from
2025 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
2026 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
2027 functions. The math functions now reside in a separate library, so
2028 programs using them will need to use `-lm' their linking commands.
2030 * John C. Bowman contributed optimized ix87 assembler inline functions.
2032 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2033 mechanism similar to that found in Solaris 2. This is now used for the
2034 group, passwd, hosts, networks, services, protocols, rpc, ethers,
2035 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
2036 file controls what services are used for each individual database. This
2037 works by loading shared libraries with names specified in `nsswitch.conf',
2038 so service modules can be changed or added at any time without even
2039 relinking any program. Currently there are the file, db, and NIS based
2040 NSS services available.
2042 * The new functions `strtoq' and `strtouq' parse integer values from
2043 strings, like `strtol' and `strtoul', but they return `long long int' and
2044 `unsigned long long int' values, respectively (64-bit quantities).
2046 * The new functions `strtof' and `strtold' parse floating-point values from
2047 strings, like `strtod', but they return `float' and `long double' values,
2048 respectively (on some machines `double' and `long double' are the same).
2050 * Ulrich Drepper has contributed new implementations of the floating-point
2051 printing and reading code used in the `printf' family of functions and
2052 `strtod', `strtof', and `strtold'. These new functions are perfectly
2053 accurate, and much faster than the old ones.
2055 * The implementation of the POSIX locale model was completely rewritten by
2056 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2057 to compile the POSIX locale definition.
2059 * The former dummy implementations of the strcoll and strxfrm function are
2060 now replaced by fully functional code contributed by Ulrich Drepper. The
2061 collation information comes from the POSIX locale definitions.
2063 * The new header <langinfo.h> defines an interface for accessing
2064 various locale-dependent data (using the locale chosen with `setlocale').
2066 * Ulrich Drepper has contributed a new suite of functions for operation on
2067 wide-character and multibyte-character strings, in <wchar.h>;
2068 and classification and case conversion of wide characters, in <wctype.h>.
2069 These new functions are conforming to the ISO C, Amendement 1 specification.
2071 * There is now a second implementation of the standard I/O library available.
2072 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2073 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2075 * You can now use positional parameter specifications in format strings
2076 for the `printf' and `scanf' families of functions. For example,
2077 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2078 ``Number 6, Mr Jones''. This is mainly useful when providing different
2079 format strings for different languages, whose grammars may dictate
2080 different orderings of the values being printed. To support this
2081 feature, the interface for `register_printf_handler' has changed; see
2082 the header file <printf.h> for details.
2084 * The `printf' and `scanf' families of functions now understand a new
2085 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2086 to group numbers as indicated by the locale; for `scanf' and friends, this
2087 says to accept as valid only a number with all the proper grouping
2088 separators in the right places. In the default "C" locale, numbers are
2089 not grouped; but locales for specific countries will define the usual
2090 conventions (i.e. separate thousands with `,' in the US locale).
2092 * The pgrp functions have been regularized, slightly incompatibly but much
2093 less confusingly. The core functions are now `getpgid' and `setpgid',
2094 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2095 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2096 provided for compatibility. There is no longer an incompatible `getpgrp'
2097 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2099 * The new header file <fts.h> and suite of functions simplify programs that
2100 operate on directory trees. This code comes from 4.4 BSD.
2102 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2103 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2104 NSS scheme used in glibc.
2106 * There is a new malloc debugging hook `__memalign_hook'.
2108 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2109 `unsigned int' in <sys/types.h>. These are for compatibility only and
2110 their use is discouraged.
2112 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2113 done differently, so that it works even without GNU ld.
2115 * New function `euidaccess' checks allowed access to a file like `access',
2116 but using the effective IDs instead of the real IDs.
2118 * The time zone data files have been updated for the latest and greatest
2119 local time conventions of the countries of the world.
2121 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2124 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2125 for formatting floating-point numbers. They are provided only for
2126 compatibility; new programs should use `sprintf' instead. There are
2127 also equivalent function for the `long double' floating-point type and
2128 all functions also exist in a reentrant form.
2130 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2131 functions for maintaining the login-record files (primarily of use to
2132 system programs such as `login'), and convenient functions for
2133 allocating and initializing a pseudo-terminal (pty) device.
2135 * Ulrich Drepper has contributed new support for System V style
2136 shared memory and IPC on systems that support it.
2138 * Ulrich Drepper has contributed several miscellaneous new functions found
2139 in System V: The `hsearch' family of functions provide an effective
2140 implementation of hash tables; `a64l' and `l64a' provide a very simple
2141 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2144 * Ulrich Drepper has contributed new reentrant counterparts for the
2145 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2147 * Ulrich Drepper has contributed new, highly-optimized versions of several
2148 string functions for the i486/Pentium family of processors.
2150 * Ulrich Drepper has updated the Linux-specific code, based largely
2151 on work done in Hongjiu Lu's version of GNU libc for Linux.
2152 The GNU library now supports Linux versions 2.0.10 and later,
2153 using the ELF object file format (i[3456]86-*-linux).
2155 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2157 * David Mosberger-Tang and Richard Henderson have ported the C library
2158 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2159 dynamic linking support for ELF/Alpha.
2161 * Richard Henderson contributed several Alpha optimized assembler function
2162 for arithmetic and string handling.
2164 * Ulrich Drepper has contributed a new set of message catalog functions to
2165 support multiple languages using the <libintl.h> interface, for use with
2166 his new package GNU gettext. Translation volunteers have contributed
2167 catalogs of the library's messages in Spanish, German, and Korean.
2169 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2170 program and the `catgets' function for reading the catalog files it
2171 creates. (The <libintl.h> interface is preferred; we include the
2172 <nl_types.h> interface using `catgets' only for source compatibility with
2173 programs already written to use it.)
2175 * New header file <values.h> gives SVID-compatible names for <limits.h>
2178 * Various new macros, declarations, and small header files for compatibility
2181 * New function `group_member' is a convenient way to check if a process has
2182 a given effective group ID.
2184 * When using GCC 2.7 and later, the socket functions are now declared in a
2185 special way so that passing an argument of type `struct sockaddr_in *',
2186 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2187 `struct sockaddr *' type, does not generate a type-clash warning.
2189 * New function `error' declared in header file <error.h> is a convenient
2190 function for printing error messages and optionally exiting; this is the
2191 canonical function used in GNU programs. The new functions `err', `warn',
2192 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2193 doing the same thing.
2195 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2196 POSIX.2 `glob' function to do ~ and {...} expansion.
2198 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2199 `clearenv' which is used in POSIX.9 is also available.
2201 * New function `getsid' returns session ID number on systems that support it.
2203 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2204 files <db.h> and <mpool.h> provide a rich set of functions for several
2205 types of simple databases stored in memory and in files, and <ndbm.h> is
2206 an old `ndbm'-compatible interface using the `db' functions. Link with
2207 `-ldb' to get these functions.
2209 * New macro `strdupa' copies a string like `strdup', but uses local stack
2210 space from `alloca' instead of dynamic heap space from `malloc'.
2212 * New function `strnlen' is like `strlen' but searches only a given maximum
2213 number of characters for the null terminator. `stpncpy', `strndup' and
2214 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2217 * New function `statfs' in header <sys/statfs.h>.
2219 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2220 provide convenient functions for operating on blocks of null-terminated
2223 * A new suite of functions in <utmp.h> handle all the details of reading
2224 and writing the utmp file.
2226 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2229 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2230 completely POSIX compliant and also implemented the extended functionality
2231 to handle alternate digit representation and alternate era date formats.
2233 * Ulrich Drepper provided an implementation of the `strptime' function
2234 defined in XPG4.2 which transforms a string into a `struct tm' value.
2236 * Paul Eggert provided the tzselect shell script as part of the timezone
2237 code. The shell script makes it easy to select the correct timezone
2240 * The implementation of the malloc family of functions is completely replaced
2241 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2242 The implementation uses the mmap function (if available) and it is
2243 optimized for the use in multi threaded programs.
2245 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2246 functions. This new functionality is usable by specifying a special
2247 salt string and it is compatible with implementation on *BSD systems.
2249 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2250 `getsubopt' to handle second level command line options, `bsd_signal'
2251 to access BSD style `signal' functionality, the obsolete `regexp' style
2254 * the `lchown' function is available on system which support this
2257 * The implementation of the shadow password handling function was contributed
2260 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2262 * POSIX.1g support was added. The <sys/select.h> header is available,
2263 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2264 implementation of `getaddrinfo'.
2268 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2270 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2271 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2273 * The new function `daemon' from 4.4 BSD is useful for server programs that
2274 want to put themselves in the background.
2276 * Joel Sherrill has contributed support for several standalone boards that
2277 run without an operating system.
2279 * `printf', `scanf' and friends now accept a `q' type modifier for long
2280 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2282 * All of the code taken from BSD (notably most of the math and networking
2283 routines) has been updated from the BSD 4.4-Lite release.
2285 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2287 * The new functions `getdomainname' and `setdomainname' fetch or change the
2288 YP/NIS domain name. These are system calls which exist on systems which
2291 * The time zone data files have been updated for the latest international
2294 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2295 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2299 * The C library now includes support for Sun RPC, from Sun's free
2300 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2301 are included. (There is still no support for YP.)
2303 * Tom Quinn has contributed a port of the C library to SGI machines running
2304 Irix 4 (mips-sgi-irix4).
2306 * The new `lockf' function is a simplified interface to the locking
2307 facilities of `fcntl', included for compatibility.
2309 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2311 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2313 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2316 * The error message printed by `assert' for a failed assertion now includes
2317 the name of the program (if using GNU ld) and the name of the calling
2318 function (with versions of GCC that support this).
2320 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2322 * The library now includes the <sys/mman.h> header file and memory
2323 management functions `mmap', `munmap', `mprotect', `msync', and
2324 `madvise', on systems that support those facilities.
2326 * The interface for `mcheck' has changed slightly: the function called to
2327 abort the program when an allocation inconsistency is detected now takes
2328 an argument that indicates the type of failure. The new function
2329 `mprobe' lets you request a consistency check for a particular block at
2330 any time (checks are normally done only when you call `free' or `realloc'
2333 * It is now possible to easily cross-compile the C library, building on one
2334 system a library to run on another machine and/or operating system. All
2335 you need to do is set the variable `HOST_CC' in `configparms' to the
2336 native compiler for programs to run on the machine you are building on (a
2337 few generator programs are used on Unix systems); set `CC' to the
2340 * The new function `fexecve' (only implemented on the GNU system) executes
2341 a program file given a file descriptor already open on the file.
2345 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2346 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2348 * You can set the variable `libprefix' in `configparms' to specify a prefix
2349 to be prepended to installed library files; this makes it easy to install
2350 the GNU C library to be linked as `-lgnuc' or whatever.
2352 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2353 copies a limited number of characters from a string, and returns the
2354 address of the last character written.
2356 * You no longer need to check for whether the installed `stddef.h' is
2357 compatible with the GNU C library. configure now checks for you.
2359 * You can now define a per-stream `fileno' function to convert the
2360 stream's cookie into an integral file descriptor.
2362 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2363 allocates zero bytes of storage, and returns a unique pointer which
2364 you can pass to `realloc' or `free'. The behavior is undefined if
2365 you dereference this pointer.
2367 * The C library now runs on Sony NEWS m68k machines running either
2368 NewsOS 3 or NewsOS 4.
2370 * The new `syscall' function is a system-dependent primitive function
2371 for invoking system calls. It has the canonical behavior on Unix
2372 systems, including unreliable return values for some calls (such as
2373 `pipe', `fork' and `getppid').
2375 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2376 to `EAGAIN', which is the preferred name. On systems whose kernels
2377 use two distinct codes, the C library now translates EWOULDBLOCK to
2378 EAGAIN in every system call function.
2382 * The GNU C Library Reference Manual is now distributed with the library.
2383 `make dvi' will produce a DVI file of the printed manual.
2384 `make info' will produce Info files that you can read on line using C-h i
2385 in Emacs or the `info' program.
2386 Please send comments on the manual to bug-glibc-manual@gnu.org.
2388 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2390 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2392 * Jason Merrill has contributed a port to the Sequent Symmetry running
2393 Dynix version 3 (i386-sequent-dynix).
2395 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2396 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2398 * New function `memory_warnings' lets you arrange to get warnings when
2399 malloc is running out of memory to allocate, like Emacs gives you.
2401 * The C library now contains the relocating allocator used in Emacs 19 for
2402 its editing buffers. This allocator (ralloc) minimizes allocation
2403 overhead and fragmentation by moving allocated regions around whenever it
2404 needs to. You always refer to a ralloc'd region with a "handle" (a
2405 pointer to a pointer--an object of type `void **').
2407 * There is a new `printf' format: `%m' gives you the string corresponding
2408 to the error code in `errno'.
2410 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2411 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2412 pass, the `a' modifier says to fill in a `char **' you pass with a
2415 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2416 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2417 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2419 * `mkstemp' is a traditional Unix function to atomically create and open a
2420 uniquely-named temporary file.
2424 * The standard location for the file that says what the local timezone is
2425 has changed again. It is now `/usr/local/etc/localtime' (or more
2426 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2428 * The distribution no longer contains any files with names longer than 14
2431 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2432 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2434 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2438 * The configuration process has changed quite a bit. The `configure'
2439 script is now used just like the configuration scripts for other GNU
2440 packages. The `sysdeps' directory hierarchy is much rearranged.
2441 The file `INSTALL' explains the new scheme in detail.
2443 * The header files no longer need to be processed into ANSI C and
2444 traditional C versions. There is just one set of files to install, and
2445 it will work with ANSI or old C compilers (including `gcc -traditional').
2447 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2448 MIPS DECStation running Ultrix 4.
2450 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2451 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2452 made itself into a shared library.
2454 * Yet further improved support for the i386, running 4.3 BSD-like systems
2455 (such as Mach 3 with the Unix single-server), or System V.
2457 * New function `strncasecmp' to do case-insensitive string comparison
2458 with limited length.
2460 * New function `strsep' is a reentrant alternative to `strtok'.
2462 * New functions `scandir' and `alphasort' for searching directories.
2464 * New function `setenv' is a better interface to `putenv'.
2466 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2467 function for traversing a directory tree.
2469 * The GNU obstack package is now also part of the C library.
2470 The new function `open_obstack_stream' creates a stdio stream that
2471 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2472 formatted output directly to an obstack.
2474 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2475 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2477 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2479 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2480 things to your strings.
2482 * There are some new test programs: test-fseek, testmb, and testrand.
2484 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2485 These ports are not finished, but are a good starting place for really
2486 supporting those systems.
2488 * `/etc/localtime' is now the standard location for the file that says what
2489 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2490 This follows the general principle that `/etc' is the place for all local
2491 configuration files.
2493 * The C library header files now use `extern "C"' when used by the C++
2494 compiler, so the C library should now work with C++ code.
2496 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2497 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2500 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2501 function which uses the `merge sort' algorithm, and is said to be
2502 significantly faster than the old GNU `qsort' function. Merge sort is
2503 now the standard `qsort' function. The new algorithm can require a lot
2504 of temporary storage; so, the old sorting function is called when the
2505 required storage is not available.
2507 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2508 provides the Unix `crypt' function, plus some other entry points.
2510 * The code and header files taken from 4.4 BSD have been updated with the
2511 latest files released from Berkeley.
2513 ----------------------------------------------------------------------
2514 Copyright information:
2516 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2518 Permission is granted to anyone to make or distribute verbatim copies
2519 of this document as received, in any medium, provided that the
2520 copyright notice and this permission notice are preserved,
2521 thus giving the recipient permission to redistribute in turn.
2523 Permission is granted to distribute modified versions
2524 of this document, or of portions of it,
2525 under the above conditions, provided also that they
2526 carry prominent notices stating who last changed them.
2529 version-control: never
projects / platform / upstream / linaro-glibc.git / blob