1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2014 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
10 * The following bugs are resolved with this release:
12 6652, 12926, 14171, 15884, 17266, 17363, 17370, 17371, 17411, 17460,
17 * The following bugs are resolved with this release:
19 6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347, 15514,
20 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198, 16275,
21 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447, 16516,
22 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600, 16609,
23 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639, 16642,
24 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689, 16695,
25 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739, 16740,
26 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791, 16796,
27 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849, 16854,
28 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912, 16915,
29 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958, 16965,
30 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022, 17031,
31 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078, 17079,
32 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150, 17153,
33 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17344, 17354.
35 * Reverted change of ABI data structures for s390 and s390x:
36 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
37 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
38 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
39 are preserved pointing straight to the same implementation as the old ones.
40 Given that, new callers will simply provide a too-big buffer to these
41 functions. Any applications/libraries out there that embed jmp_buf or
42 ucontext_t in an ABI-relevant data structure that have already been rebuilt
43 against 2.19 headers will have to rebuilt again. This is necessary in any
44 case to revert the breakage in their ABI caused by the glibc change.
46 * Support for file description locks is added to systems running the
47 Linux kernel. The standard file locking interfaces are extended to
48 operate on file descriptions, not file descriptors, via the use of
49 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
50 are associated with an open file instead of a process.
52 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
54 * The minimum Linux kernel version that this version of the GNU C Library
55 can be used with is 2.6.32.
57 * Running the testsuite no longer terminates as soon as a test fails.
58 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
59 with PASS or FAIL lines for individual tests. A summary of the results is
60 printed, including a list of failing lists, and "make check" exits with
61 error status if there were any unexpected failures. "make check
62 stop-on-test-failure=y" may be used to keep the old behavior.
64 * The am33 port, which had not worked for several years, has been removed
67 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
68 supported; they now act the same as _DEFAULT_SOURCE (but generate a
69 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
70 conflicted with POSIX (support for which was removed in 2.19), the
71 interfaces those macros enabled remain available when compiling with
72 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
75 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
77 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
78 This may improve lock scaling of existing programs on TX capable systems.
79 The lock elision code is only built with --enable-lock-elision=yes and
80 then requires a GCC version supporting the TX builtins. With lock elision
81 default mutexes are elided via __builtin_tbegin, if the cpu supports
82 transactions. By default lock elision is not enabled and the elision code
85 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
86 copy the path argument. This allowed programs to cause posix_spawn to
87 deference a dangling pointer, or use an unexpected pathname argument if
88 the string was modified after the posix_spawn_file_actions_addopen
91 * All supported architectures now use the main glibc sysdeps directory
92 instead of some being in a separate "ports" directory (which was
93 distributed separately before glibc 2.17).
95 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
96 On configurations that support it (all Linux configurations), it's now
97 used regardless of the --enable-add-ons switch to configure. It is no
98 longer possible to build such configurations without pthreads support.
100 * Locale names, including those obtained from environment variables (LANG
101 and the LC_* variables), are more tightly checked for proper syntax.
102 setlocale will now fail (with EINVAL) for locale names that are overly
103 long, contain slashes without starting with a slash, or contain ".." path
104 components. (CVE-2014-0475) Previously, some valid locale names were
105 silently replaced with the "C" locale when running in AT_SECURE mode
106 (e.g., in a SUID program). This is no longer necessary because of the
109 * On x86-64, the dynamic linker's lazy-binding support is now compatible
110 with application code using Intel MPX instructions. (With all previous
111 versions, the MPX register state could be clobbered when making calls
112 into or out of a shared library.) Note that while the new dynamic
113 linker is compatible with all known x86 hardware whether or not it
114 supports Intel MPX, some x86 instruction-set emulators might fail to
115 handle the new instruction encodings. This is known to affect Valgrind
116 versions up through 3.9 (but will be fixed in the forthcoming 3.10
117 release), and might affect other tools that do instruction emulation.
119 * Support for loadable gconv transliteration modules has been removed.
120 The support for transliteration modules has been non-functional for
121 over a decade, and the removal is prompted by security defects. The
122 normal gconv conversion modules are still supported. Transliteration
123 with //TRANSLIT is still possible, and the //IGNORE specifier
124 continues to be supported. (CVE-2014-5119)
126 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
127 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
128 resulting a denial-of-service security vulnerability in applications which
129 use functions related to iconv. (CVE-2014-6040)
133 * The following bugs are resolved with this release:
135 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
136 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
137 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
138 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
139 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
140 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
141 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
142 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
143 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
144 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
145 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
146 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
147 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
148 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
149 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
150 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
151 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
152 16431, 16453, 16474, 16506, 16510, 16529
154 * Slovenian translations for glibc messages have been contributed by the
155 Translation Project's Slovenian team of translators.
157 * The public headers no longer use __unused nor __block. This change is to
158 support compiling programs that are derived from BSD sources and use
159 __unused internally, and to support compiling with Clang's -fblock
160 extension which uses __block.
162 * CVE-2012-4412 The strcoll implementation caches indices and rules for
163 large collation sequences to optimize multiple passes. This cache
164 computation may overflow for large collation sequences and may cause a
165 stack or buffer overflow. This is now fixed to use a slower algorithm
166 which does not use a cache if there is an integer overflow.
168 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
169 rules for large collation sequences to optimize multiple passes and falls
170 back to alloca if malloc fails, resulting in a possible stack overflow.
171 The implementation now falls back to an uncached collation sequence lookup
174 * CVE-2013-4788 The pointer guard used for pointer mangling was not
175 initialized for static applications resulting in the security feature
176 being disabled. The pointer guard is now correctly initialized to a
177 random value for static applications. Existing static applications need
178 to be recompiled to take advantage of the fix (bug 15754).
180 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
181 to the d_name member of struct dirent, or omit the terminating NUL
182 character. (Bugzilla #14699).
184 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
185 aligned_alloc functions could allocate too few bytes or corrupt the
186 heap when passed very large allocation size values (Bugzilla #15855,
189 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
190 for AF_INET6 has been fixed (Bugzilla #16072).
192 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
193 pap_CW, quz_PE, the_NP.
195 * Substantially revised locales: gd_GB, ht_HT
197 * The LC_ADDRESS field was updated to support country_car for almost all
200 * ISO 1427 definitions were updated.
202 * ISO 3166 definitions were updated.
204 * The localedef utility now supports --big-endian and --little-endian
205 command-line options to generate locales for a different system from that
206 for which the C library was built.
208 * Binary locale files now only depend on the endianness of the system for
209 which they are generated and not on other properties of that system. As a
210 consequence, binary files generated with new localedef may be incompatible
211 with old versions of the GNU C Library, and binary files generated with
212 old localedef may be incompatible with this version of the GNU C Library,
213 in the following circumstances:
215 + Locale files may be incompatible on m68k systems.
217 + Locale archive files (but not separate files for individual locales) may
218 be incompatible on systems where plain "char" is signed.
220 * The configure option --disable-versioning has been removed. Builds with
221 --disable-versioning had not worked for several years.
223 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
224 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
226 * SystemTap probes for malloc have been introduced.
228 * SystemTap probes for slow multiple precision fallback paths of
229 transcendental functions have been introduced.
231 * Support for powerpc64le has been added.
233 * The soft-float powerpc port now supports e500 processors.
235 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
237 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
238 set of header declarations that are enabled by default, even when other
239 feature test macros or compiler options such as -std=c99 would otherwise
240 disable some of those declarations.
242 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
243 conflict with POSIX. The libbsd-compat library (which was a dummy library
244 that did nothing) has also been removed.
246 * Preliminary documentation about Multi-Thread, Async-Signal and
247 Async-Cancel Safety has been added.
249 * Change of ABI data structures for s390 and s390x:
250 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
251 allow for future hardware extensions. All library functions that accept or
252 return these structures were versioned in order to provide backwards
253 compatibility with existing code. However, not all cases can be handled
254 with interface versioning. If an application embeds either structure into
255 another structure and that structure is passed to another compilation unit
256 which expects the newer larger-sized object then any access to the new
257 fields will result in undefined behaviour. Similarly any access to fields
258 that were moved by the enlarging of the structures will cause undefined
259 behaviour. To fix the undefined behaviour all objects that are part of the
260 final in-memory image must agree on the size of structures, and this may
261 require recompilation.
265 * The following bugs are resolved with this release:
267 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
268 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
269 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
270 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
271 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
272 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
273 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
274 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
275 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
276 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
277 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
278 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
279 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
282 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
283 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
284 Distributions can re-enable building and using pt_chown via the new configure
285 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
286 considerable security risks and should only be used if the distribution
287 understands and accepts the risks.
289 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
292 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
293 fixed (Bugzilla #15330).
295 * Add support for calling C++11 thread_local object destructors on thread
296 and program exit. This needs compiler support for offloading C++11
297 destructor calls to glibc.
299 * Improved worst case performance of libm functions with double inputs and
302 * Support for priority inherited mutexes in pthread condition variables on
303 non-x86 architectures.
305 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
307 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
309 * Optimized string functions for ARM. Implemented by Will Newton and
312 * Optimized libm functions for SPARC. Implemented by David S. Miller.
314 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
317 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
318 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
320 * Added a benchmark framework to track performance of functions in glibc.
322 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
323 It is based on draft TS 18661 and currently enabled as a GNU extension.
325 * On Linux, the clock function now uses the clock_gettime system call
326 for improved precision, rather than old times system call.
328 * Added support for version-3 tz format files. This is needed when using
329 the tz database release 2013e or later, and affects a few unusual cases --
330 currently only TZ='America/Godthab' for time stamps after 2037.
332 * Added new API functions pthread_getattr_default_np and
333 pthread_setattr_default_np to get and set the default pthread
334 attributes of a process.
336 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
337 This may improve lock scaling of existing programs on TSX capable systems.
338 When the --enable-lock-elision=yes parameter is specified at configure
339 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
342 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
343 availability). Implemented by Ryan S. Arnold.
345 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
349 * The following bugs are resolved with this release:
351 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
352 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
353 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
354 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
355 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
356 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
357 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
358 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
359 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
360 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
361 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
362 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
363 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
364 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
365 14879, 14889, 14893, 14898, 14914.
367 * Optimization of memcpy for MIPS.
369 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
370 EMFILE has been fixed (Bugzilla #14889).
372 * The add-on ports collection is now distributed in the "ports" subdirectory
373 of the main GNU C Library distribution, rather than separately.
375 * Port to ARM AArch64 contributed by Linaro.
377 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
378 Optimized versions of memcpy, memset, and memcmp added for System z10 and
380 Implemented by Andreas Krebbel.
382 * The new function secure_getenv allows secure access to the environment,
383 returning NULL if running in a SUID/SGID process. This function replaces
384 the internal function __secure_getenv.
386 * SystemTap static probes have been added into the dynamic linker.
387 Implemented by Gary Benson.
389 * Optimizations of string functions strstr, strcasestr and memmem.
390 Implemented by Maxim Kuvyrkov.
392 * The minimum Linux kernel version that this version of the GNU C Library
393 can be used with is 2.6.16.
395 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
396 powerpc POWER7. Implemented by Will Schmidt.
398 * New configure option --disable-nscd builds the C library such that it
399 never attempts to contact the Name Service Caching Daemon (nscd).
400 New configure option --disable-build-nscd avoids building nscd itself;
401 this is the default if --disable-nscd is used.
403 * Improved support for cross-compilation, including cross-testing and
404 bootstrap builds without a previously built glibc.
406 * Several testsuite tests are now able to test multiple IFUNC variants of an
407 interface, rather than just testing the one that would be chooen by
410 * New configure options --with-bugurl and --with-pkgversion, for
411 distributors to use to embed their bug-reporting and package version
412 information in --help and --version output.
414 * The ttyname and ttyname_r functions on Linux now fall back to searching for
415 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
416 allows creation of chroots without the procfs mounted on /proc.
418 * The `crypt' function now fails if passed salt bytes that violate the
419 specification for those values. On Linux, the `crypt' function will
420 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
421 enabled, and fail on encrypted strings using the MD5 or DES algorithm
422 when the mode is enabled.
424 * The `clock_*' suite of functions (declared in <time.h>) is now available
425 directly in the main C library. Previously it was necessary to link with
426 -lrt to use these functions. This change has the effect that a
427 single-threaded program that uses a function such as `clock_gettime' (and
428 is not linked with -lrt) will no longer implicitly load the pthreads
429 library at runtime and so will not suffer the overheads associated with
430 multi-thread support in other code such as the C++ runtime library.
432 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
437 * The following bugs are resolved with this release:
439 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
440 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
441 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
442 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
443 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
444 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
445 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
446 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
447 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
448 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
449 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
450 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
451 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
452 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
453 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
454 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
455 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
456 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
457 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
458 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
459 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
460 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
463 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
464 configuring glibc with:
465 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
466 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
467 Implemented by H.J. Lu.
471 + define static_assert
473 + do not declare gets
475 + declare at_quick_exit and quick_exit also for ISO C11
477 + aligned_alloc. NB: The code is deliberately allows the size parameter
478 to not be a multiple of the alignment. This is a moronic requirement
479 in the standard but it is only a requirement on the caller, not the
484 + uchar.h support added
486 + CMPLX, CMPLXF, CMPLXL added
488 Implemented by Ulrich Drepper.
490 * Support for the IA-64 has been moved to ports.
492 * Remove support for anything but ELF binary format
494 * Checking versions of poll, ppoll added.
495 Implemented by Ulrich Drepper.
497 * More generic and 64-bit performance optimizations to math functions.
498 Implemented by Ulrich Drepper.
500 * New configure option --enable-obsolete-rpc makes the deprecated RPC
501 headers and functions available at compile time as they were before
502 version 2.14. This option will be removed at some time in the future
503 after the TI-RPC library becomes fully sufficient for the needs of
504 existing applications.
506 * Compatibility code for Linux kernel versions before 2.4 has been removed.
507 Note that glibc is not expected to work with any Linux kernel version
510 * New header <sys/auxv.h> and function getauxval allowing easy access to
511 the AT_* key-value pairs passed from the Linux kernel. The header also
512 defines the HWCAP_* bits associated with the AT_HWCAP key.
514 * New locales: mag_IN
516 * New configure option --enable-systemtap builds SystemTap static probes
517 into libc for setjmp and longjmp and into libpthread for various operations.
518 So far the setjmp/longjmp probes and some of the libpthread probes are
519 provided only for i*86 and x86_64.
520 Implemented by Roland McGrath and Rayson Ho.
522 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
524 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
527 * More optimized functions for SPARC. Implemented by David S. Miller.
529 * Improved support for cross-compilation, especially bootstrap builds
530 without a previously built glibc.
532 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
533 Chris Metcalf from Tilera.
535 * Support for the old ARM ABI has been removed from ports. Only the EABI is
536 now supported for ARM processors.
538 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
539 as the name of the dynamic linker, to distinguish it from the
540 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
542 * Support for CRIS has been removed from ports.
544 * A new class of installed header has been documented for low-level
545 platform-specific functionality. PowerPC added the first instance with a
546 function to provide time base register access. Contributed by Tulio
547 Magno Quites Machado Filho.
549 * ix86 configurations now install header files that are consistent with
550 what x86-64 configurations install. These same header files can be used
551 for -m32, -m64, or -mx32 builds.
552 Contributed by H.J. Lu.
554 * Math library bug fixes. A thorough audit of all open math library bugs was
555 conducted by Joseph Myers. Significant progress was made on many math
556 library bugs resulting in more accurate exceptions and function results.
557 Many thanks to all those that contributed including Andreas Jaeger for his
558 patch review and work on the x87 trigonometric instruction issues.
560 * Timezone data is no longer installed. Timezone-related binaries and scripts
561 will continue to be installed. Users should obtain their timezone data from
562 their distribution provider or from the tzdata package at
563 <ftp://munnari.oz.au/pub/>.
567 * The following bugs are resolved with this release:
569 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
570 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
571 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
572 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
573 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
574 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
575 13484, 13506, 13515, 13523, 13524, 13538, 13540
577 * New program pldd to list loaded object of a process
578 Implemented by Ulrich Drepper.
580 * Add nss_db support back to glibc. No more dependency on Berkeley db
581 and support for initgroups lookups.
582 Implemented by Ulrich Drepper.
584 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
585 Contributed by HJ Lu.
587 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
588 Contributed by HJ Lu.
590 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
591 on x86-32 and x86-64.
592 Contributed by Liubov Dmitrieva.
594 * Optimized strchr and strrchr for SSE on x86-32.
595 Contributed by Liubov Dmitrieva.
597 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
598 for x86-64 and x86-32.
599 Contributed by Liubov Dmitrieva.
601 * New interfaces: scandirat, scandirat64
602 Implemented by Ulrich Drepper.
604 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
605 Implemented by Ulrich Drepper.
607 * nscd now also caches the netgroup database.
608 Implemented by Ulrich Drepper.
610 * Integrate libm with gcc's -ffinite-math-only option.
611 Implemented by Ulrich Drepper.
613 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
614 to math functions. Implemented by Ulrich Drepper.
616 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
617 Implemented by Ulrich Drepper.
619 * New Linux interfaces: process_vm_readv, process_vm_writev
621 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
622 Implemented by Ulrich Drepper.
624 * Optimized nearbyint and strcasecmp for PPC.
625 Implemented by Adhemerval Zanella.
627 * New locales: bho_IN, unm_US, es_CU, ta_LK
631 * The following bugs are resolved with this release:
633 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
634 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
635 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
636 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
637 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
638 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
639 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
640 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
641 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
642 12795, 12811, 12813, 12814, 12841
644 * The RPC implementation in libc is obsoleted. Old programs keep working
645 but new programs cannot be linked with the routines in libc anymore.
646 Programs in need of RPC functionality must be linked against TI-RPC.
647 The TI-RPC implementation is IPv6 enabled and there are other benefits.
649 Visible changes of this change include (obviously) the inability to link
650 programs using RPC functions without referencing the TI-RPC library and the
651 removal of the RPC headers from the glibc headers.
652 Implemented by Ulrich Drepper.
654 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
655 syncfs, setns, sendmmsg
657 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
658 yue_HK, lij_IT, mhr_RU
660 * New encodings: CP770, CP771, CP772, CP773, CP774
662 * New program sotruss to trace calls through PLTs
663 Implemented by Ulrich Drepper.
665 * The malloc hook implementation is marked deprecated and will be removed
666 from the default implementation in the next version. The design never
667 worked ever since the introduction of threads. Even programs which do
668 not create threads themselves can use multiple threads created internally.
672 * The following bugs are resolved with this release:
674 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
675 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
676 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
677 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
680 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
682 * POWER7 optimizations: memset, memcmp, strncmp
684 * New optimized string functions for x86-64: strnlen (SSE2),
685 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
686 Implemented by Ulrich Drepper.
690 * The following bugs are resolved with this release:
692 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
693 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
694 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
695 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
696 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
697 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
698 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
699 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
701 * New interfaces: pthread_getname_np, pthread_setname_np
703 * New Linux interface: recvmmsg
705 * STT_GNU_IFUNC implemented for Sparc by David Miller.
707 * The dynamic linker now recognizes supported ABI versions from the
708 EI_ABIVERSION field in the ELF header.
709 Implemented by Ulrich Drepper.
711 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
712 will not be used to fill in password fields in the passwd.byname replies.
713 Instead it is used to synthesize the shadow.byname table, should it be
714 missing. This is a useful mode in some installations involving Solaris.
715 Implemented by Ulrich Drepper.
717 * New locales: kok_IN, sq_MK, cv_RU
721 * The following bugs are resolved with this release:
723 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
724 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
725 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
726 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
727 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
728 10789, 10817, 10823, 10840, 10847
730 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
732 Implemented by Ulrich Drepper.
734 * Checking version of longjmp added that fails if an uninitialized stack
735 frame would be created. Implemented by Ulrich Drepper.
737 * STT_GNU_IFUNC is now supported in static executables.
738 Implemented by H.J. Lu.
740 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
742 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
743 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
744 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
745 Contributed by H.J. Lu.
747 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
748 Implemented by Ulrich Drepper.
750 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
752 Contributed by H.J. Lu.
754 * Support for fma instruction in AVX on x86-64.
755 Implemented by H.J. Lu and Ulrich Drepper.
757 * AVX support in x86-64 auditing support in ld.so.
758 Implemented by H.J. Lu.
760 * STB_GNU_UNIQUE support added.
761 Implemented by Ulrich Drepper.
763 * Implement second fallback mode for optimized DNS lookup for even more
764 broken environments. If two requests from the same port are not
765 handled correctly close the socket and open a new one before sending
766 the second request. The 'single-request-reopen' option in /etc/resolv.conf
767 can be used to select this mode right away, instead of rediscovering the
768 necessity is every process again.
769 Implemented by Ulrich Drepper.
771 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
772 Implemented by Adam Tkac.
774 * Optimized iconv conversions for S390x.
775 Implemented by Andreas Krebbel.
777 * Using condvars with PI mutexes is now more efficient due to kernel
778 support for requeueing to PI futexes. NPTL support added for x86-64.
779 Implemented by Ulrich Drepper.
781 * New locales: ps_AF, my_MM
785 * The following bugs are resolved with this release:
787 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
788 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
789 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
790 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
791 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
793 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
794 Implemented by Ulrich Drepper.
796 * New Linux interfaces: accept4, fallocate, fallocate64.
797 Implemented by Ulrich Drepper.
799 * Correct declarations of string function when used in C++ code. This
800 could lead to compile errors for invalid C++ code.
802 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
805 * New POSIX 2008 interface: psiginfo
806 Implemented by Ulrich Drepper.
808 * New ISO C++1x interfaces: quick_exit, at_quick_exit
809 Implemented by Ulrich Drepper.
811 * Support for selecting between multiple function definitions at runtime
812 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
814 * The libcrypt library can now use the hash function implementations in
815 NSS. Implemented by Ulrich Drepper.
817 * The malloc implementation can be compiled to be less memory efficient
818 but higher performing in multi-threaded programs.
819 Implemented by Ulrich Drepper.
821 * New locales: nan_TW@latin, ks_IN
823 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
824 Implemented by Ulrich Drepper.
826 * Extended printf hook support. It is possible to use user-defined types
827 and extend existing format specifiers.
828 Implemented by Ulrich Drepper.
830 * Handling for group shadow files has been added.
831 Implemented by Ulrich Drepper.
833 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
834 servers (the case, e.g., for some people using the built-in DNS
835 server in ADSL modems/routers). There is a once-per-process timeout
836 in case of a broken server. To avoid it, users can run nscd or put
837 'options single-request' in /etc/resolv.conf.
838 Implemented by Ulrich Drepper.
842 * The following bugs are resolved with this release:
844 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
845 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
846 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
847 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
848 6968, 6974, 6980, 6995, 7008, 7009, 7029
850 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
851 up at the same time. Implemented by Ulrich Drepper.
853 * TLS descriptors for LD and GD on x86 and x86-64.
854 Implemented by Alexandre Oliva.
856 * getaddrinfo now handles DCCP and UDPlite.
857 Implemented by Ulrich Drepper.
859 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
860 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
861 Implemented by Ulrich Drepper.
863 * New implementation of memmem, strstr, and strcasestr which is O(n).
864 Implemented by Eric Blake.
866 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
868 * Implement "e" option for popen to open file descriptor with the
869 close-on-exec flag set. Implemented by Ulrich Drepper.
871 * Implement "b" mode for fmemopen. In this mode writes writes don't
872 implicitly add a NUL byte and seeks from the end of the buffer really
873 use the buffer end, not the string length as the basis.
874 Implemented by Ulrich Drepper.
876 * Many functions, exported and internal, now atomically set the close-on-exec
877 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
879 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
881 Implemented by Pravin Satpute.
883 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
887 * The following bugs are resolved with this release:
889 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
890 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
891 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
892 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
893 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
894 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
895 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
897 * New locales: bo_CN, bo_IN, shs_CA.
899 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
901 * Sorting rules for some Indian languages (Devanagari and Gujarati).
902 Implemented by Pravin Satpute.
904 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
906 * nscd caches now all timeouts for DNS entries
907 Implemented by Ulrich Drepper.
909 * nscd is more efficient and wakes up less often.
910 Implemented by Ulrich Drepper.
912 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
913 vdprintf, and obstack_vprintf.
914 Implemented by Jakub Jelinek.
916 * Faster memset for x86-64.
917 Implemented by Harsha Jagasia and H.J. Lu.
919 * Faster memcpy on x86.
920 Implemented by Ulrich Drepper.
922 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
923 Implemented by Ulrich Drepper.
925 * Faster sqrt and sqrtf implemention for some PPC variants.
926 Implemented by Steven Munroe.
930 * The following bugs are resolved with this release:
932 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
933 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
934 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
935 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
936 5071, 5103, 5104, 5112, 5113, 5184, 5186
938 * More checking functions: fread, fread_unlocked, open*, mq_open.
939 Implemented by Jakub Jelinek and Ulrich Drepper.
941 * Extend fortification to C++. Implemented by Jakub Jelinek.
943 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
944 by not recognizing 'a' as a modifier when those specs are requested.
945 Implemented by Jakub Jelinek.
947 * PPC optimizations to math and string functions.
948 Implemented by Steven Munroe.
950 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
951 options to be passed. Implemented by Ulrich Drepper.
953 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
955 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
956 Implemented by Ulrich Drepper.
958 * Handle private futexes in the NPTL implementation.
959 Implemented by Jakub Jelinek and Ulrich Drepper.
961 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
962 Implemented by Roland McGrath and Ulrich Drepper.
964 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
966 * SHA-256 and SHA-512 based password encryption.
967 Implemented by Ulrich Drepper.
969 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
970 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
973 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
974 Implemented by Ulrich Drepper.
978 * The following bugs are resolved with this release:
980 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
981 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
982 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
983 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
984 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
985 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
986 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
989 * New Linux interfaces: epoll_pwait, sched_getcpu.
991 * New generic interfaces: strerror_l.
993 * nscd can now cache the services database. Implemented by Ulrich Drepper.
997 * The following bugs are resolved with this release:
999 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
1000 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
1001 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
1002 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
1003 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
1004 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
1005 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
1006 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
1007 3225, 3251, 3252, 3253, 3273
1009 * For Linux, the sorting of addresses returned by getaddrinfo now also
1010 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
1011 Implemented by Ulrich Drepper.
1013 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
1014 Implemented by Ulrich Drepper.
1016 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
1018 * New iconv module for MIK. Contributed by Alexander Shopov.
1020 * For sites with broken group and/or passwd database, the auto-propagate
1021 option of nscd can prevent creating ID lookup entries from the results
1022 of a name lookup and vice versa. This usually is no problem but some
1023 site might have problems with the default behavior.
1024 Implemented by Ulrich Drepper.
1026 * Iterating over entire database in NIS can be slow. With the
1027 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
1028 to trade time for memory. The entire database will be read at once.
1029 Implemented by Ulrich Drepper.
1031 * The interfaces introduced in RFC 3542 have been implemented by
1034 * Support for the new ELF hash table format was added by Ulrich Drepper.
1036 * Support for priority inheritance mutexes added by Jakub Jelinek and
1039 * Support for priority protected mutexes added by Jakub Jelinek.
1041 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1042 or_IN, csb_PL, fy_NL, sr_ME.
1046 * More overflow detection functions.
1048 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1049 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1051 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1052 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1053 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1054 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1055 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1056 by Masahide Washizawa.
1058 * It is now possible to install audit libraries for the dynamic linker using
1059 LD_AUDIT. Implemented by Ulrich Drepper.
1061 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1062 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1063 For a libc and libpthread that works well on Linux 2.4 kernels, we
1064 recommend using the stable 2.3 branch.
1066 * The new function open_wmemstream acts like open_memstream,
1067 but uses a wchar_t wide character buffer.
1069 * The new function ppoll is an improved version of poll, similar to pselect.
1071 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1072 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1073 renameat, unlinkat, linkat, symlinkat, readlinkat.
1075 * New Linux kernel system calls: unshare,
1076 inotify_init, inotify_add_watch, inotify_rm_watch.
1078 * The euidaccess function is now also known by the alias eaccess,
1079 for compatibility with some other systems.
1081 * Timezone data updated to 2006b version.
1085 * The following bugs are resolved with this release:
1087 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1088 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1089 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1090 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1091 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1092 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1094 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1096 * As of this release, GCC 4 can be used to compile the C Library.
1098 * Timezone data updated to 2005m version.
1102 * The following bugs are resolved with this release:
1104 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1105 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1106 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1107 777, 787, 821, 822, 823, 825
1109 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1113 * Support for RFC 3678. Real implementations exist only for Linux so far.
1114 Implemented by Ulrich Drepper.
1116 * nscd can now cache entries persistently. Expiring entries are reloaded.
1117 For speedups the cache can be shared in memory with client processes.
1118 Implemented by Ulrich Drepper.
1120 * nscd can now perform SELinux checks.
1121 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1123 * getaddrinfo queries are now cached. Canonical name lookup is performed
1125 Implemented by Ulrich Drepper.
1127 * The nothrow function attribute is used when headers are used by gcc when
1128 compiling C code. This can avoid significant amounts of exception
1131 * The malloc functions perform more error checking and are stricter when
1132 it comes to reacting on errors. The default action is to terminate
1133 the process after showing an error message. Implemented by Ulrich Drepper.
1135 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1136 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1138 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1139 namespaces using the new function dlmopen(). This feature is of course,
1140 like most other dynamic loading functionality, not available in statically
1141 linked applications. Implemented by Ulrich Drepper.
1143 * Low-overhead boundary checking variants of string and some stdio functions
1144 were added. These are to be used in conjunction with a gcc patch by
1145 Jakub Jelinek which adds calls to these functions if possible.
1146 Implemented by Jakub Jelinek and Ulrich Drepper.
1148 * Old code for several operating systems and machine architectures that
1149 have not been in working condition in a long time have been removed from
1150 the main source tree maintained by the GNU C Library's maintainers.
1151 These files are now reside in the separate `ports' source module
1152 that is usable as an add-on when building the library.
1156 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1157 interrogate the dynamic linker, compatible with the Solaris interface.
1159 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1160 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1162 * getifaddrs now uses the netlink interface on Linux to get its information.
1163 Implemented by Thorsten Kukuk.
1165 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1166 Implemented by Ulrich Drepper.
1168 * support for non-executable stacks on x86 has been added. Changes mostly
1171 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1174 * getaddrinfo now performs destination address selection according to
1179 * Thread-safe interfaces for many functions that access locale data
1180 were added in version 2.3, but these features were omitted from NEWS.
1181 Many functions have variants with an `_l' suffix that take a `locale_t'
1182 object as a parameter rather than consulting the current locale.
1183 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1184 create and maintain `locale_t' objects. Additionally, the new function
1185 `uselocale' sets "the current locale" (as used by functions not so
1186 parameterized) set for an individual thread. These features were added
1187 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1189 * The functions getresuid, getresgid, setresuid, and setresgid, which
1190 have long been available on Linux, are now declared in <unistd.h>
1191 and are now also available on the Hurd.
1193 * ELF thread-local storage support (TLS) now works on x86-64.
1195 * The new dynamic string token $LIB is expanded in shared library names.
1196 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1198 * Aldy Hernandez contributed complete software floating point support for
1199 PowerPC machines with no FPU.
1201 * fexecve is implemented on Linux.
1203 * The `btowc' function should work at least twice as fast due to
1204 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1206 * With approriate thread add-ons cancelable functions are now implemented
1207 in libc.so as well. No need to call the function in libpthread. This
1208 change allowed to finally disable the incorrect and expensive handling
1209 of weak definition in ld.so.
1211 * Yet more PLT entries in libc.so have been removed. We finally arrived
1212 at the bare minimum. Startup times improved appropriately.
1214 * Support for the new Linux/x86 system call interface was added. The
1215 AT_SYSINFO auxiliary vector entry is recognized and handled.
1219 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1222 * iconv (the program and the interface) now accepts empty names (excluding
1223 options like //TRANSLIT) to mean "use charset of current locale".
1225 * localedef can now transliterate characters in strings which are not in
1226 the provided charmap. The information from the input locale is used.
1228 * Prelinking support was added for ELF targets. This requires additional
1229 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1231 * Read-only stdio streams now use mmap to speed up operation by eliminating
1232 copying and buffer underflows. To use add 'm' to the mode string of
1233 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1235 * The malloc functions were completely rewritten by Wolfram Gloger based
1236 on Doug Lea's malloc-2.7.0.c.
1238 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1239 implementation of regex.
1241 * Bruno Haible upgraded the iconv and locale implementation to support
1244 * Contents of the LC_* and LANG environment variables in the CEN style are
1245 not recognized anymore. It never was used. Change by Ulrich Drepper.
1247 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1248 thread-local storage (TLS) ABI on some platforms.
1249 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1251 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1252 EUC-JISX0213, and TSCII.
1254 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1255 BSD-compatible interface for getting all network interface addresses.
1256 Implementation for IPv4 by Roland McGrath.
1258 * Loading of locale data is faster due to the introduction of a locale
1259 archive. Implemented by Roland McGrath and Ulrich Drepper.
1261 * Startup times are significantly reduced by not using exported functions
1262 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1265 * Steven Munroe contributed a port to PowerPC64/Linux.
1269 * The Hurd now uses the GNU libio implementation of stdio rather than the
1270 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1272 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1273 with the same behavior as the Linux system call of the same name.
1277 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1278 128-bit long double format.
1280 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1281 IBM1161, and IBM1162 charsets.
1283 * Andreas Jaeger contributed a port to x86-64/Linux.
1285 * Peter Bruin contributed a port to PowerPC/Hurd.
1287 * libc functions using I/O streams now can handle wide-oriented streams
1290 * optimizations in the dynamic linker. Binaries created by recent binutils
1291 versions start up quicker due to reduced time spent on relocations.
1293 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1297 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1298 asinh, atanh, j0 for the 128-bit long double format.
1300 * Bruno Haible updated all the code handling Unicode in some form to
1301 support Unicode 3.1.
1303 * Speed of regex for single-byte locales is back to previous levels.
1304 Patch by Isamu Hasegawa.
1306 * Alpha, SPARC, and IA-64 now also using floating stacks.
1308 * Startup time of internationalized applications greatly improved through
1309 iconv cache. Use iconvconfig to generate the cache file.
1310 Contributed by Ulrich Drepper.
1312 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1313 severe performance problems. Patch by David Mosberger.
1315 * The Hurd port got a lot more functionality like AIO, various stdio
1316 extensions, etc. Mainly done by Roland McGrath.
1318 * mtrace can now lookup symbols in shared libraries.
1322 * Intel's IA-64 math library is largely integrated. It provides fast and
1323 accurate implementatations for most basic and standard math functions
1324 in float, double, and long double format.
1326 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1327 and asin for the 96-bit long double format and asin, log, tan for the
1328 128-bit long double format.
1330 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1331 The basic double functions exist today. Contributed by Abraham Ziv
1332 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1333 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1335 * An asynchronous name lookup library was added. The interface is designed
1336 after POSIX AIO. The proposal was circulated beforehand to get comments.
1337 No negative ones came in. Implemented by Ulrich Drepper.
1339 * Port to S390/64bit contributed by Martin Schwidefsky
1340 <schwidefsky@de.ibm.com>.
1342 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1343 of functions for Linux/IA-64.
1345 * The RPC code is now thread safe. Threads can now use the same service
1346 of different services at the same time. Patch by Eric Norum
1347 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1349 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1350 family of functions for Linux/S390.
1352 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1353 of functions for Linux/x86.
1355 * Port to Linux/CRIS contributed by Axis Communications.
1359 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1360 we can now check for namespace violations and missing declarations. The
1361 result is that almost all headers are now Unix-compliant (as defined in
1362 the upcoming XPG6). The negative side is that some programs might need
1363 corrections, too, if they depend on the incorrect form of the headers in
1364 previous versions which defined too many symbols and included too many
1367 * regex now handles multibyte character sets correctly.
1368 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1370 * iconv (the program) does now conform to the upcoming XPG6 and handles
1371 charmaps. Instead of the charset names the path of charmaps can be
1372 provided and the conversion happens based on this data.
1373 Contributed by Ulrich Drepper.
1375 * The locale program now provides detailed information about the installed
1380 only lists the names of the supported locales
1384 provides details such as country, language, and codeset name.
1385 Contributed by Ulrich Drepper.
1389 * The gencat program now parses the input file according to the charset
1390 selected by the LC_CTYPE category. This is important for stateful
1391 character sets. To make generating catalogs easier there is a way
1392 to overwrite the charset selected by the locale: before the first
1393 message or $ quote line the catalog can contain a line like
1395 $ codeset=ISO-8859-2
1397 to select the charset (ISO-8859-2 in this case).
1399 Implemented by Shinya Hanataka and Ulrich Drepper.
1401 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1402 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1403 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1405 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1406 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1408 * The LANGUAGE environment variable is now ignored unless the locale is
1409 changed from the default "C" locale.
1411 * The usual bug fixes.
1415 * Greg McGary added runtime support for bounds checking using gcc's
1416 new -fbounded-pointers option. ix86 target is complete. PowerPC
1419 * Thorsten Kukuk added secure mode support to nscd.
1421 * The Berkeley db libraries have been removed.
1423 Related, the nss_db module is now in a separate package since it
1424 obviously requires a database library being available.
1426 * Wide character I/O streams implemented by Ulrich Drepper.
1428 * Functions from the extended socket API added by Ulrich Drepper.
1430 * Functions feenableexcept and fedisableexcept to control the
1431 behaviour of individual exceptions have been added by Andreas Jaeger.
1433 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1435 * The resolver code has been updated from bind 8.2.3-T5B which supports
1436 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1439 This change could in some situations effect backward compatibility. Since
1440 now `_res' is a thread-local instead of a global variable, modifying it
1441 in one thread does not have any effect in other threads.
1443 The resolver library was also extended to allow IPv6 as the transport
1444 protocol for the requests. This work was done by Stig Venaas.
1446 * Compatibility code for K&R C compilers has been removed from the
1447 header files. A ISO C compiler is needed to use the library
1448 (conforming to either C89 or C99 standard).
1450 * Complete rewrite of the localedef program to support multibyte character
1451 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1452 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1453 Implemented by Ulrich Drepper.
1455 Bruno Haible significantly improved the generation and use of the data
1456 structures for the wide character tables.
1458 * Plural handling in gettext implemented by Ulrich Drepper.
1460 * The utmp daemon has been removed.
1462 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1464 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1467 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1469 * POSIX barriers implemented by Kaz Kylheku.
1471 * POSIX spawn function family implemented by Ulrich Drepper.
1473 * POSIX spinlocks are now available.
1475 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1477 * the configure option --enable-kernel=X.Y.Z allows to strip out
1478 compatibility for kernel versions before X.Y.Z. This is currently only
1479 implemented for Linux.
1481 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1482 field sin6_scope_id. This means that all programs using IPv6 should be
1483 recompiled. Don't expect binary compatibility with previous glibc
1486 * various conversion modules for IBM character sets contributed by
1489 * IA-64 port by Jes Sorensen and HJ Lu.
1503 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1505 * New xdr functions are added; some rpc functions are now 64bit clean.
1507 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1509 * Fixed known incompatibilities with glibc 2.0.
1511 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1513 * Optimized a number of functions (especially the ELF dynamic loader).
1515 * Update timezone data files.
1517 * lots of charmaps corrections
1519 * some new locale definitions and charmaps
1524 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1525 conform to POSIX member type requirements. Symbol versions have been
1526 adjusted as needed within the library, and for direct use by applications,
1527 but there is potential for problems if third-party libraries use
1528 struct timeval as part of their interface. This does not present
1529 a problem for X and other "essential" system libraries.
1531 * An additional locale model to support C++ Standard Library locale
1532 model and probably more was implemented by Ulrich Drepper.
1534 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1537 * Miles Bader provided the `argp' function family to support hierachical
1538 command line argument parsing, layered on top of getopt.
1540 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1542 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1545 * scanf recognizes the %a and %A format for scanning floating point numbers.
1547 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1548 information and interfaces for the available integer types.
1550 * about 130 new math functions were added to implement the ISO C9x math
1553 * the new header <complex.h> contains definitions of the complex math
1554 functions from ISO C 9X.
1556 * the new header <tgmath.h> defines generic macros to use complex or
1557 real valued functions.
1559 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1561 * Andreas Jaeger provided a test suite for the math library.
1563 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1565 * Ulrich Drepper added character set conversion functions (iconv).
1567 * Optimized string functions have been added.
1569 * The localedata addon is now part of glibc.
1571 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1573 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1574 daemon for NSS (nscd).
1576 Missing a better place here are some numbers on improvements. Under
1577 Linux 2.1.125 un-tar-ing the kernel sources takes
1581 using local files 12.19s 6.88s 22.91s
1583 using NIS 13.92s 8.91s 26.34s
1585 using NIS & nscd 10.37s 7.34s 25.30s
1587 using NIS+ 27.57s 30.37s 640.46s
1589 using NIS+ & nscd 10.25s 7.83s 26.51s
1591 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1593 Keep in mind that non-namelookup related operations dominate above times.
1594 It was just a common complain that using NIS+ unpacking the kernel is
1597 [1] The old nscd implementation is not available anymore since it was
1598 distributed with glibc up to version 2.0.98 and thus is now replaced.
1600 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1602 * Mark Kettenis provided a Hesiod NSS module.
1604 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1605 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1607 * rcmd can now handle netgroups (Dick Streefland).
1609 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1612 * Support for the IPv6 protocol has been added to the socket API, as per the
1613 latest draft standards.
1615 * Support for Linux 2.2 has been added.
1617 * Interface changes relative to the latest 2.0.x release:
1618 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1619 addseverity NEW: Unix98
1620 alphasort64 NEW: LFS
1621 argp_err_exit_status NEW: argp, GNU ext
1622 argp_error NEW: argp, GNU ext
1623 argp_failure NEW: argp, GNU ext
1624 argp_help NEW: argp, GNU ext
1625 argp_parse NEW: argp, GNU ext
1626 argp_program_bug_address NEW: argp, GNU ext
1627 argp_program_version NEW: argp, GNU ext
1628 argp_program_version_hook NEW: argp, GNU ext
1629 argp_state_help NEW: argp, GNU ext
1630 argp_usage NEW: argp, GNU ext
1631 authdes_create NEW: Secure RPC
1632 authdes_getucred NEW: Secure RPC
1633 authdes_pk_create NEW: Secure RPC
1634 backtrace NEW: GNU ext.
1635 backtrace_symbols NEW: GNU ext.
1636 backtrace_symbols_fd NEW: GNU ext.
1638 cacosf NEW: ISO C 9x
1639 cacosh NEW: ISO C 9x
1640 cacoshf NEW: ISO C 9x
1641 cacoshl NEW: ISO C 9x
1642 cacosl NEW: ISO C 9x
1649 casinf NEW: ISO C 9x
1650 casinh NEW: ISO C 9x
1651 casinhf NEW: ISO C 9x
1652 casinhl NEW: ISO C 9x
1653 casinl NEW: ISO C 9x
1655 catanf NEW: ISO C 9x
1656 catanh NEW: ISO C 9x
1657 catanhf NEW: ISO C 9x
1658 catanhl NEW: ISO C 9x
1659 catanl NEW: ISO C 9x
1660 cbc_crypt NEW: Secure RPC
1664 ccoshf NEW: ISO C 9x
1665 ccoshl NEW: ISO C 9x
1671 cimagf NEW: ISO C 9x
1672 cimagl NEW: ISO C 9x
1673 clearerr_locked REMOVED
1674 clntunix_create NEW: sunrpc ext
1676 clog10 NEW: ISO C 9x
1677 clog10f NEW: ISO C 9x
1678 clog10l NEW: ISO C 9x
1688 cprojf NEW: ISO C 9x
1689 cprojl NEW: ISO C 9x
1691 crealf NEW: ISO C 9x
1692 creall NEW: ISO C 9x
1697 csinhf NEW: ISO C 9x
1698 csinhl NEW: ISO C 9x
1701 csqrtf NEW: ISO C 9x
1702 csqrtl NEW: ISO C 9x
1706 ctanhf NEW: ISO C 9x
1707 ctanhl NEW: ISO C 9x
1709 des_setparity NEW: Secure RPC
1710 ecb_crypt NEW: Secure RPC
1711 endutxent NEW: Unix98
1713 exp10f NEW: ISO C 9x
1714 exp10l NEW: ISO C 9x
1718 fattach NEW: STREAMS
1719 fdetach NEW: STREAMS
1723 feclearexcept NEW: ISO C 9x
1724 fegetenv NEW: ISO C 9x
1725 fegetexceptflag NEW: ISO C 9x
1726 fegetround NEW: ISO C 9x
1727 feholdexcept NEW: ISO C 9x
1729 feraiseexcept NEW: ISO C 9x
1730 ferror_locked REMOVED
1731 fesetenv NEW: ISO C 9x
1732 fesetexceptflag NEW: ISO C 9x
1733 fesetround NEW: ISO C 9x
1734 fetestexcept NEW: ISO C 9x
1735 feupdateenv NEW: ISO C 9x
1736 fflush_locked REMOVED
1740 fgets_unlocked NEW: GNU ext.
1741 fileno_locked REMOVED
1753 fputc_locked REMOVED
1754 fputs_unlocked NEW: GNU ext.
1755 fread_unlocked NEW: GNU ext.
1760 fstatvfs NEW: Unix98
1764 ftruncate64 NEW: LFS
1766 fwrite_unlocked NEW: GNU ext.
1767 gai_strerror NEW: IPv6
1771 getchar_locked REMOVED
1773 getdate_err NEW: Unix98
1774 getdate_r NEW: GNU ext.
1776 getnameinfo NEW: IPv6
1777 getnetname NEW: Secure RPC
1778 getpmsg NEW: STREAMS
1779 getpt NEW: Unix98 PTY
1780 getrlimit64 NEW: LFS
1781 getutxent NEW: Unix98
1782 getutxid NEW: Unix98
1783 getutxline NEW: Unix98
1784 glob64 NEW: GNU ext.
1785 globfree64 NEW: GNU ext.
1786 gnu_get_libc_release NEW: GNU ext.
1787 gnu_get_libc_version NEW: GNU ext.
1788 grantpt NEW: Unix98 PTY
1789 host2netname NEW: Secure RPC
1791 iconv_close NEW: iconv
1792 iconv_open NEW: iconv
1793 if_freenameindex NEW: IPv6
1794 if_indextoname NEW: IPv6
1795 if_nameindex NEW: IPv6
1796 if_nametoindex NEW: IPv6
1797 in6addr_any NEW: IPv6
1798 in6addr_loopback NEW: IPv6
1799 inet6_isipv4mapped NEW: IPv6
1800 isastream NEW: STREAMS
1801 iswblank NEW: GNU ext.
1802 key_decryptsession NEW: Secure RPC
1803 key_decryptsession_pk NEW: Secure RPC
1804 key_encryptsession NEW: Secure RPC
1805 key_encryptsession_pk NEW: Secure RPC
1806 key_gendes NEW: Secure RPC
1807 key_get_conv NEW: Secure RPC
1808 key_secretkey_is_set NEW: Secure RPC
1809 key_setnet NEW: Secure RPC
1810 key_setsecret NEW: Secure RPC
1811 llrint NEW: ISO C 9x
1812 llrintf NEW: ISO C 9x
1813 llrintl NEW: ISO C 9x
1814 llround NEW: ISO C 9x
1815 llroundf NEW: ISO C 9x
1816 llroundl NEW: ISO C 9x
1821 lrintf NEW: ISO C 9x
1822 lrintl NEW: ISO C 9x
1823 lround NEW: ISO C 9x
1824 lroundf NEW: ISO C 9x
1825 lroundl NEW: ISO C 9x
1827 makecontext NEW: Unix98
1828 mempcpy NEW: GNU ext.
1831 modify_ldt NEW: kernel
1835 nearbyint NEW: ISO C 9x
1836 nearbyintf NEW: ISO C 9x
1837 nearbyintl NEW: ISO C 9x
1838 netname2host NEW: Secure RPC
1839 netname2user NEW: Secure RPC
1840 nexttoward NEW: ISO C 9x
1841 nexttowardf NEW: ISO C 9x
1842 nexttowardl NEW: ISO C 9x
1846 passwd2des NEW: Secure RPC
1848 pow10f NEW: GNU ext.
1849 pow10l NEW: GNU ext.
1852 printf_size NEW: GNU ext.
1853 printf_size_info NEW: GNU ext.
1854 profil_counter REMOVED
1855 pthread_mutexattr_getkind_np REPLACED
1856 pthread_mutexattr_setkind_np REPLACED
1857 ptsname NEW: Unix98 PTY
1858 ptsname_r NEW: Unix98 PTY
1860 putchar_locked REMOVED
1861 putgrent NEW: GNU ext.
1863 putpmsg NEW: STREAMS
1864 pututxline NEW: Unix98
1868 readdir64_r NEW: LFS
1869 remquo NEW: ISO C 9x
1870 remquof NEW: ISO C 9x
1871 remquol NEW: ISO C 9x
1873 roundf NEW: ISO C 9x
1874 roundl NEW: ISO C 9x
1876 scalbln NEW: ISO C 9x
1877 scalblnf NEW: ISO C 9x
1878 scalblnl NEW: ISO C 9x
1880 sendfile NEW: kernel
1881 setcontext NEW: Unix98
1882 setrlimit64 NEW: LFS
1883 setutxent NEW: Unix98
1885 sigignore NEW: Unix98
1886 sigqueue NEW: POSIX.1b
1887 sigrelse NEW: Unix98
1888 sigset NEW: POSIX.1b
1889 sigtimedwait NEW: POSIX.1b
1890 sigwaitinfo NEW: POSIX.1b
1891 sincos NEW: GNU ext.
1892 sincosf NEW: GNU ext.
1893 sincosl NEW: GNU ext.
1897 strcasestr NEW: GNU ext.
1898 strtoimax NEW: ISO C 9x
1899 strtoumax NEW: ISO C 9x
1900 strverscmp NEW: GNU ext.
1901 svcauthdes_stats NEW: Secure RPC
1902 svcunix_create NEW: sunrpc etx
1903 svcunixfd_create NEW: sunrpc ext
1904 swapcontext NEW: Unix98
1905 tcgetsid NEW: Unix98 PTY
1906 tdestroy NEW: GNU ext.
1907 tgamma NEW: ISO C 9x
1908 tgammaf NEW: ISO C 9x
1909 tgammal NEW: ISO C 9x
1913 truncf NEW: ISO C 9x
1914 truncl NEW: ISO C 9x
1916 unlockpt NEW: Unix98 PTY
1917 updwtmpx NEW: Unix98
1918 user2netname NEW: Secure RPC
1919 utmpxname NEW: Unix98
1920 versionsort NEW: GNU ext.
1921 versionsort64 NEW: GNU ext.
1923 wcscasecmp NEW: GNU ext.
1924 wcsncasecmp NEW: GNU ext.
1925 wcsnlen NEW: GNU ext.
1926 wcstoimax NEW: ISO C 9x
1927 wcstoll NEW: ISO C 9x
1928 wcstoull NEW: ISO C 9x
1929 wcstoumax NEW: ISO C 9x
1931 wordexp NEW: POSIX.2
1932 wordfree NEW: POSIX.2
1933 write_profiling REMOVED
1934 xdecrypt NEW: Secure RPC
1935 xdr_authdes_cred NEW: Secure RPC
1936 xdr_authdes_verf NEW: Secure RPC
1937 xdr_cryptkeyarg NEW: Secure RPC
1938 xdr_cryptkeyarg2 NEW: Secure RPC
1939 xdr_cryptkeyres NEW: Secure RPC
1940 xdr_getcredres NEW: Secure RPC
1941 xdr_key_netstarg NEW: Secure RPC
1942 xdr_key_netstres NEW: Secure RPC
1943 xdr_keybuf NEW: Secure RPC
1944 xdr_keystatus NEW: Secure RPC
1945 xdr_netnamestr NEW: Secure RPC
1946 xdr_sizeof NEW: Secure RPC
1947 xdr_unixcred NEW: sunrpc ext
1948 xencrypt NEW: Secure RPC
1949 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1960 * inet_ntoa is thread-safe
1962 * updwtmp is moved from libutil to libc
1964 * rewrite of cbrt function
1966 * update of timezone data
1980 * add atoll function
1982 * fix complex problems in Berkeley DB code
1984 * fix math functions
1988 * fixed lots of header problems (especially Linux/GNU specific)
1990 * dynamic loader preserves all registers
1992 * Roland McGrath provided support for handling of auxiliary objects in
1993 the ELF dynamic loader.
1995 * support for parallel builds is improved
1999 * GNU extensions are no longer declared by default. To enable them you
2000 must define the macro `_GNU_SOURCE' in your program or compile with
2003 * The library has changed from using GNU ld symbol aliases to using weak
2004 symbols where available. The ELF object file format supports weak
2005 symbols; GNU ld also supports weak symbols in the a.out format. (There
2006 is also now support for other GNU ld extensions in ELF. Use the
2007 `--with-elf' option to configure to indicate you have ELF, and
2008 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
2009 of many files which contained only symbol aliases, reducing the size of
2010 the source and the compiled library; many other files were renamed to
2011 less cryptic names previously occupied by the symbol alias files.
2012 There is a new header file <elf.h> for programs which operate on
2013 files in the ELF format.
2015 * Converted to Autoconf version 2, so `configure' has more options.
2016 Run `configure --help' to see the details.
2018 * The library can now be configured to build profiling, highly-optimized
2019 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
2020 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
2021 `configure' enable building these extra libraries. The shared library is
2022 built by default when using both ELF and GNU ld. When shared libraries
2023 are enabled, the new library `-ldl' is available for arbitrary run-time
2024 loading of shared objects; its interface is defined in <dlfcn.h>. The
2025 new header file <link.h> gives access to the internals of the run-time
2026 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
2027 application of same name on other systems and it provides information
2028 about dynamically linked binaries.
2030 * The C library now provides the run-time support code for profiling
2031 executables compiled with `-pg'. Programs can control the profiling code
2032 through the interface in <sys/gmon.h>. The `gmon.out' files written by
2033 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
2034 the support for this file format was contributed by David Mosberger-Tang.
2036 * The math code has been replaced with a math library based on fdlibm from
2037 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
2038 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
2039 functions. The math functions now reside in a separate library, so
2040 programs using them will need to use `-lm' their linking commands.
2042 * John C. Bowman contributed optimized ix87 assembler inline functions.
2044 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2045 mechanism similar to that found in Solaris 2. This is now used for the
2046 group, passwd, hosts, networks, services, protocols, rpc, ethers,
2047 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
2048 file controls what services are used for each individual database. This
2049 works by loading shared libraries with names specified in `nsswitch.conf',
2050 so service modules can be changed or added at any time without even
2051 relinking any program. Currently there are the file, db, and NIS based
2052 NSS services available.
2054 * The new functions `strtoq' and `strtouq' parse integer values from
2055 strings, like `strtol' and `strtoul', but they return `long long int' and
2056 `unsigned long long int' values, respectively (64-bit quantities).
2058 * The new functions `strtof' and `strtold' parse floating-point values from
2059 strings, like `strtod', but they return `float' and `long double' values,
2060 respectively (on some machines `double' and `long double' are the same).
2062 * Ulrich Drepper has contributed new implementations of the floating-point
2063 printing and reading code used in the `printf' family of functions and
2064 `strtod', `strtof', and `strtold'. These new functions are perfectly
2065 accurate, and much faster than the old ones.
2067 * The implementation of the POSIX locale model was completely rewritten by
2068 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2069 to compile the POSIX locale definition.
2071 * The former dummy implementations of the strcoll and strxfrm function are
2072 now replaced by fully functional code contributed by Ulrich Drepper. The
2073 collation information comes from the POSIX locale definitions.
2075 * The new header <langinfo.h> defines an interface for accessing
2076 various locale-dependent data (using the locale chosen with `setlocale').
2078 * Ulrich Drepper has contributed a new suite of functions for operation on
2079 wide-character and multibyte-character strings, in <wchar.h>;
2080 and classification and case conversion of wide characters, in <wctype.h>.
2081 These new functions are conforming to the ISO C, Amendement 1 specification.
2083 * There is now a second implementation of the standard I/O library available.
2084 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2085 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2087 * You can now use positional parameter specifications in format strings
2088 for the `printf' and `scanf' families of functions. For example,
2089 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2090 ``Number 6, Mr Jones''. This is mainly useful when providing different
2091 format strings for different languages, whose grammars may dictate
2092 different orderings of the values being printed. To support this
2093 feature, the interface for `register_printf_handler' has changed; see
2094 the header file <printf.h> for details.
2096 * The `printf' and `scanf' families of functions now understand a new
2097 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2098 to group numbers as indicated by the locale; for `scanf' and friends, this
2099 says to accept as valid only a number with all the proper grouping
2100 separators in the right places. In the default "C" locale, numbers are
2101 not grouped; but locales for specific countries will define the usual
2102 conventions (i.e. separate thousands with `,' in the US locale).
2104 * The pgrp functions have been regularized, slightly incompatibly but much
2105 less confusingly. The core functions are now `getpgid' and `setpgid',
2106 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2107 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2108 provided for compatibility. There is no longer an incompatible `getpgrp'
2109 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2111 * The new header file <fts.h> and suite of functions simplify programs that
2112 operate on directory trees. This code comes from 4.4 BSD.
2114 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2115 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2116 NSS scheme used in glibc.
2118 * There is a new malloc debugging hook `__memalign_hook'.
2120 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2121 `unsigned int' in <sys/types.h>. These are for compatibility only and
2122 their use is discouraged.
2124 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2125 done differently, so that it works even without GNU ld.
2127 * New function `euidaccess' checks allowed access to a file like `access',
2128 but using the effective IDs instead of the real IDs.
2130 * The time zone data files have been updated for the latest and greatest
2131 local time conventions of the countries of the world.
2133 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2136 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2137 for formatting floating-point numbers. They are provided only for
2138 compatibility; new programs should use `sprintf' instead. There are
2139 also equivalent function for the `long double' floating-point type and
2140 all functions also exist in a reentrant form.
2142 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2143 functions for maintaining the login-record files (primarily of use to
2144 system programs such as `login'), and convenient functions for
2145 allocating and initializing a pseudo-terminal (pty) device.
2147 * Ulrich Drepper has contributed new support for System V style
2148 shared memory and IPC on systems that support it.
2150 * Ulrich Drepper has contributed several miscellaneous new functions found
2151 in System V: The `hsearch' family of functions provide an effective
2152 implementation of hash tables; `a64l' and `l64a' provide a very simple
2153 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2156 * Ulrich Drepper has contributed new reentrant counterparts for the
2157 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2159 * Ulrich Drepper has contributed new, highly-optimized versions of several
2160 string functions for the i486/Pentium family of processors.
2162 * Ulrich Drepper has updated the Linux-specific code, based largely
2163 on work done in Hongjiu Lu's version of GNU libc for Linux.
2164 The GNU library now supports Linux versions 2.0.10 and later,
2165 using the ELF object file format (i[3456]86-*-linux).
2167 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2169 * David Mosberger-Tang and Richard Henderson have ported the C library
2170 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2171 dynamic linking support for ELF/Alpha.
2173 * Richard Henderson contributed several Alpha optimized assembler function
2174 for arithmetic and string handling.
2176 * Ulrich Drepper has contributed a new set of message catalog functions to
2177 support multiple languages using the <libintl.h> interface, for use with
2178 his new package GNU gettext. Translation volunteers have contributed
2179 catalogs of the library's messages in Spanish, German, and Korean.
2181 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2182 program and the `catgets' function for reading the catalog files it
2183 creates. (The <libintl.h> interface is preferred; we include the
2184 <nl_types.h> interface using `catgets' only for source compatibility with
2185 programs already written to use it.)
2187 * New header file <values.h> gives SVID-compatible names for <limits.h>
2190 * Various new macros, declarations, and small header files for compatibility
2193 * New function `group_member' is a convenient way to check if a process has
2194 a given effective group ID.
2196 * When using GCC 2.7 and later, the socket functions are now declared in a
2197 special way so that passing an argument of type `struct sockaddr_in *',
2198 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2199 `struct sockaddr *' type, does not generate a type-clash warning.
2201 * New function `error' declared in header file <error.h> is a convenient
2202 function for printing error messages and optionally exiting; this is the
2203 canonical function used in GNU programs. The new functions `err', `warn',
2204 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2205 doing the same thing.
2207 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2208 POSIX.2 `glob' function to do ~ and {...} expansion.
2210 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2211 `clearenv' which is used in POSIX.9 is also available.
2213 * New function `getsid' returns session ID number on systems that support it.
2215 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2216 files <db.h> and <mpool.h> provide a rich set of functions for several
2217 types of simple databases stored in memory and in files, and <ndbm.h> is
2218 an old `ndbm'-compatible interface using the `db' functions. Link with
2219 `-ldb' to get these functions.
2221 * New macro `strdupa' copies a string like `strdup', but uses local stack
2222 space from `alloca' instead of dynamic heap space from `malloc'.
2224 * New function `strnlen' is like `strlen' but searches only a given maximum
2225 number of characters for the null terminator. `stpncpy', `strndup' and
2226 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2229 * New function `statfs' in header <sys/statfs.h>.
2231 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2232 provide convenient functions for operating on blocks of null-terminated
2235 * A new suite of functions in <utmp.h> handle all the details of reading
2236 and writing the utmp file.
2238 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2241 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2242 completely POSIX compliant and also implemented the extended functionality
2243 to handle alternate digit representation and alternate era date formats.
2245 * Ulrich Drepper provided an implementation of the `strptime' function
2246 defined in XPG4.2 which transforms a string into a `struct tm' value.
2248 * Paul Eggert provided the tzselect shell script as part of the timezone
2249 code. The shell script makes it easy to select the correct timezone
2252 * The implementation of the malloc family of functions is completely replaced
2253 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2254 The implementation uses the mmap function (if available) and it is
2255 optimized for the use in multi threaded programs.
2257 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2258 functions. This new functionality is usable by specifying a special
2259 salt string and it is compatible with implementation on *BSD systems.
2261 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2262 `getsubopt' to handle second level command line options, `bsd_signal'
2263 to access BSD style `signal' functionality, the obsolete `regexp' style
2266 * the `lchown' function is available on system which support this
2269 * The implementation of the shadow password handling function was contributed
2272 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2274 * POSIX.1g support was added. The <sys/select.h> header is available,
2275 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2276 implementation of `getaddrinfo'.
2280 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2282 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2283 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2285 * The new function `daemon' from 4.4 BSD is useful for server programs that
2286 want to put themselves in the background.
2288 * Joel Sherrill has contributed support for several standalone boards that
2289 run without an operating system.
2291 * `printf', `scanf' and friends now accept a `q' type modifier for long
2292 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2294 * All of the code taken from BSD (notably most of the math and networking
2295 routines) has been updated from the BSD 4.4-Lite release.
2297 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2299 * The new functions `getdomainname' and `setdomainname' fetch or change the
2300 YP/NIS domain name. These are system calls which exist on systems which
2303 * The time zone data files have been updated for the latest international
2306 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2307 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2311 * The C library now includes support for Sun RPC, from Sun's free
2312 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2313 are included. (There is still no support for YP.)
2315 * Tom Quinn has contributed a port of the C library to SGI machines running
2316 Irix 4 (mips-sgi-irix4).
2318 * The new `lockf' function is a simplified interface to the locking
2319 facilities of `fcntl', included for compatibility.
2321 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2323 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2325 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2328 * The error message printed by `assert' for a failed assertion now includes
2329 the name of the program (if using GNU ld) and the name of the calling
2330 function (with versions of GCC that support this).
2332 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2334 * The library now includes the <sys/mman.h> header file and memory
2335 management functions `mmap', `munmap', `mprotect', `msync', and
2336 `madvise', on systems that support those facilities.
2338 * The interface for `mcheck' has changed slightly: the function called to
2339 abort the program when an allocation inconsistency is detected now takes
2340 an argument that indicates the type of failure. The new function
2341 `mprobe' lets you request a consistency check for a particular block at
2342 any time (checks are normally done only when you call `free' or `realloc'
2345 * It is now possible to easily cross-compile the C library, building on one
2346 system a library to run on another machine and/or operating system. All
2347 you need to do is set the variable `HOST_CC' in `configparms' to the
2348 native compiler for programs to run on the machine you are building on (a
2349 few generator programs are used on Unix systems); set `CC' to the
2352 * The new function `fexecve' (only implemented on the GNU system) executes
2353 a program file given a file descriptor already open on the file.
2357 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2358 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2360 * You can set the variable `libprefix' in `configparms' to specify a prefix
2361 to be prepended to installed library files; this makes it easy to install
2362 the GNU C library to be linked as `-lgnuc' or whatever.
2364 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2365 copies a limited number of characters from a string, and returns the
2366 address of the last character written.
2368 * You no longer need to check for whether the installed `stddef.h' is
2369 compatible with the GNU C library. configure now checks for you.
2371 * You can now define a per-stream `fileno' function to convert the
2372 stream's cookie into an integral file descriptor.
2374 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2375 allocates zero bytes of storage, and returns a unique pointer which
2376 you can pass to `realloc' or `free'. The behavior is undefined if
2377 you dereference this pointer.
2379 * The C library now runs on Sony NEWS m68k machines running either
2380 NewsOS 3 or NewsOS 4.
2382 * The new `syscall' function is a system-dependent primitive function
2383 for invoking system calls. It has the canonical behavior on Unix
2384 systems, including unreliable return values for some calls (such as
2385 `pipe', `fork' and `getppid').
2387 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2388 to `EAGAIN', which is the preferred name. On systems whose kernels
2389 use two distinct codes, the C library now translates EWOULDBLOCK to
2390 EAGAIN in every system call function.
2394 * The GNU C Library Reference Manual is now distributed with the library.
2395 `make dvi' will produce a DVI file of the printed manual.
2396 `make info' will produce Info files that you can read on line using C-h i
2397 in Emacs or the `info' program.
2398 Please send comments on the manual to bug-glibc-manual@gnu.org.
2400 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2402 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2404 * Jason Merrill has contributed a port to the Sequent Symmetry running
2405 Dynix version 3 (i386-sequent-dynix).
2407 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2408 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2410 * New function `memory_warnings' lets you arrange to get warnings when
2411 malloc is running out of memory to allocate, like Emacs gives you.
2413 * The C library now contains the relocating allocator used in Emacs 19 for
2414 its editing buffers. This allocator (ralloc) minimizes allocation
2415 overhead and fragmentation by moving allocated regions around whenever it
2416 needs to. You always refer to a ralloc'd region with a "handle" (a
2417 pointer to a pointer--an object of type `void **').
2419 * There is a new `printf' format: `%m' gives you the string corresponding
2420 to the error code in `errno'.
2422 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2423 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2424 pass, the `a' modifier says to fill in a `char **' you pass with a
2427 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2428 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2429 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2431 * `mkstemp' is a traditional Unix function to atomically create and open a
2432 uniquely-named temporary file.
2436 * The standard location for the file that says what the local timezone is
2437 has changed again. It is now `/usr/local/etc/localtime' (or more
2438 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2440 * The distribution no longer contains any files with names longer than 14
2443 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2444 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2446 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2450 * The configuration process has changed quite a bit. The `configure'
2451 script is now used just like the configuration scripts for other GNU
2452 packages. The `sysdeps' directory hierarchy is much rearranged.
2453 The file `INSTALL' explains the new scheme in detail.
2455 * The header files no longer need to be processed into ANSI C and
2456 traditional C versions. There is just one set of files to install, and
2457 it will work with ANSI or old C compilers (including `gcc -traditional').
2459 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2460 MIPS DECStation running Ultrix 4.
2462 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2463 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2464 made itself into a shared library.
2466 * Yet further improved support for the i386, running 4.3 BSD-like systems
2467 (such as Mach 3 with the Unix single-server), or System V.
2469 * New function `strncasecmp' to do case-insensitive string comparison
2470 with limited length.
2472 * New function `strsep' is a reentrant alternative to `strtok'.
2474 * New functions `scandir' and `alphasort' for searching directories.
2476 * New function `setenv' is a better interface to `putenv'.
2478 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2479 function for traversing a directory tree.
2481 * The GNU obstack package is now also part of the C library.
2482 The new function `open_obstack_stream' creates a stdio stream that
2483 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2484 formatted output directly to an obstack.
2486 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2487 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2489 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2491 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2492 things to your strings.
2494 * There are some new test programs: test-fseek, testmb, and testrand.
2496 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2497 These ports are not finished, but are a good starting place for really
2498 supporting those systems.
2500 * `/etc/localtime' is now the standard location for the file that says what
2501 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2502 This follows the general principle that `/etc' is the place for all local
2503 configuration files.
2505 * The C library header files now use `extern "C"' when used by the C++
2506 compiler, so the C library should now work with C++ code.
2508 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2509 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2512 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2513 function which uses the `merge sort' algorithm, and is said to be
2514 significantly faster than the old GNU `qsort' function. Merge sort is
2515 now the standard `qsort' function. The new algorithm can require a lot
2516 of temporary storage; so, the old sorting function is called when the
2517 required storage is not available.
2519 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2520 provides the Unix `crypt' function, plus some other entry points.
2522 * The code and header files taken from 4.4 BSD have been updated with the
2523 latest files released from Berkeley.
2525 ----------------------------------------------------------------------
2526 Copyright information:
2528 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2530 Permission is granted to anyone to make or distribute verbatim copies
2531 of this document as received, in any medium, provided that the
2532 copyright notice and this permission notice are preserved,
2533 thus giving the recipient permission to redistribute in turn.
2535 Permission is granted to distribute modified versions
2536 of this document, or of portions of it,
2537 under the above conditions, provided also that they
2538 carry prominent notices stating who last changed them.
2541 version-control: never
projects / platform / upstream / glibc.git / blob