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, 10672, 12847, 12926, 13862, 14132, 14138, 14171, 14498, 15215,
13 15884, 16469, 16619, 16740, 16857, 17192, 17266, 17344, 17363, 17370,
14 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522, 17555,
15 17570, 17571, 17572, 17573, 17574, 17581, 17582, 17583, 17584, 17585,
16 17589, 17594, 17601, 17608, 17616, 17625, 17633, 17634, 17647, 17653,
17 17664, 17665, 17668, 17682.
19 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
20 under certain input conditions resulting in the execution of a shell for
21 command substitution when the applicaiton did not request it. The
22 implementation now checks WRDE_NOCMD immediately before executing the
23 shell and returns the error WRDE_CMDSUB as expected.
25 * The minimum GCC version that can be used to build this version of the GNU
26 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
27 still be used to compile programs using the GNU C Library.
29 * The GNU C Library is now built with -Werror by default. This can be
30 disabled by configuring with --disable-werror.
32 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
34 * The obsolete sigvec function has been removed. This was the original
35 4.2BSD interface that inspired the POSIX.1 sigaction interface, which
36 programs have been using instead for about 25 years. Of course, ABI
37 compatibility for old binaries using sigvec remains intact.
39 * Merged gettext 0.19.3 into the intl subdirectory. This fixes building
40 with newer versions of bison.
44 * The following bugs are resolved with this release:
46 6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347, 15514,
47 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198, 16275,
48 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447, 16516,
49 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600, 16609,
50 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639, 16642,
51 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689, 16695,
52 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739, 16740,
53 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791, 16796,
54 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849, 16854,
55 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912, 16915,
56 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958, 16965,
57 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022, 17031,
58 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078, 17079,
59 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150, 17153,
60 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
62 * Optimized strchrnul implementation for AArch64. Contributed by ARM Ltd.
64 * Reverted change of ABI data structures for s390 and s390x:
65 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
66 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
67 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
68 are preserved pointing straight to the same implementation as the old ones.
69 Given that, new callers will simply provide a too-big buffer to these
70 functions. Any applications/libraries out there that embed jmp_buf or
71 ucontext_t in an ABI-relevant data structure that have already been rebuilt
72 against 2.19 headers will have to rebuilt again. This is necessary in any
73 case to revert the breakage in their ABI caused by the glibc change.
75 * Support for file description locks is added to systems running the
76 Linux kernel. The standard file locking interfaces are extended to
77 operate on file descriptions, not file descriptors, via the use of
78 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
79 are associated with an open file instead of a process.
81 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
83 * The minimum Linux kernel version that this version of the GNU C Library
84 can be used with is 2.6.32.
86 * Running the testsuite no longer terminates as soon as a test fails.
87 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
88 with PASS or FAIL lines for individual tests. A summary of the results is
89 printed, including a list of failing lists, and "make check" exits with
90 error status if there were any unexpected failures. "make check
91 stop-on-test-failure=y" may be used to keep the old behavior.
93 * The am33 port, which had not worked for several years, has been removed
96 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
97 supported; they now act the same as _DEFAULT_SOURCE (but generate a
98 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
99 conflicted with POSIX (support for which was removed in 2.19), the
100 interfaces those macros enabled remain available when compiling with
101 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
104 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
106 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
107 This may improve lock scaling of existing programs on TX capable systems.
108 The lock elision code is only built with --enable-lock-elision=yes and
109 then requires a GCC version supporting the TX builtins. With lock elision
110 default mutexes are elided via __builtin_tbegin, if the cpu supports
111 transactions. By default lock elision is not enabled and the elision code
114 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
115 copy the path argument. This allowed programs to cause posix_spawn to
116 deference a dangling pointer, or use an unexpected pathname argument if
117 the string was modified after the posix_spawn_file_actions_addopen
120 * All supported architectures now use the main glibc sysdeps directory
121 instead of some being in a separate "ports" directory (which was
122 distributed separately before glibc 2.17).
124 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
125 On configurations that support it (all Linux configurations), it's now
126 used regardless of the --enable-add-ons switch to configure. It is no
127 longer possible to build such configurations without pthreads support.
129 * Locale names, including those obtained from environment variables (LANG
130 and the LC_* variables), are more tightly checked for proper syntax.
131 setlocale will now fail (with EINVAL) for locale names that are overly
132 long, contain slashes without starting with a slash, or contain ".." path
133 components. (CVE-2014-0475) Previously, some valid locale names were
134 silently replaced with the "C" locale when running in AT_SECURE mode
135 (e.g., in a SUID program). This is no longer necessary because of the
138 * On x86-64, the dynamic linker's lazy-binding support is now compatible
139 with application code using Intel MPX instructions. (With all previous
140 versions, the MPX register state could be clobbered when making calls
141 into or out of a shared library.) Note that while the new dynamic
142 linker is compatible with all known x86 hardware whether or not it
143 supports Intel MPX, some x86 instruction-set emulators might fail to
144 handle the new instruction encodings. This is known to affect Valgrind
145 versions up through 3.9 (but will be fixed in the forthcoming 3.10
146 release), and might affect other tools that do instruction emulation.
148 * Support for loadable gconv transliteration modules has been removed.
149 The support for transliteration modules has been non-functional for
150 over a decade, and the removal is prompted by security defects. The
151 normal gconv conversion modules are still supported. Transliteration
152 with //TRANSLIT is still possible, and the //IGNORE specifier
153 continues to be supported. (CVE-2014-5119)
155 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
156 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
157 resulting a denial-of-service security vulnerability in applications which
158 use functions related to iconv. (CVE-2014-6040)
162 * The following bugs are resolved with this release:
164 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
165 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
166 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
167 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
168 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
169 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
170 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
171 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
172 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
173 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
174 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
175 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
176 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
177 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
178 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
179 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
180 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
181 16431, 16453, 16474, 16506, 16510, 16529
183 * Slovenian translations for glibc messages have been contributed by the
184 Translation Project's Slovenian team of translators.
186 * The public headers no longer use __unused nor __block. This change is to
187 support compiling programs that are derived from BSD sources and use
188 __unused internally, and to support compiling with Clang's -fblock
189 extension which uses __block.
191 * CVE-2012-4412 The strcoll implementation caches indices and rules for
192 large collation sequences to optimize multiple passes. This cache
193 computation may overflow for large collation sequences and may cause a
194 stack or buffer overflow. This is now fixed to use a slower algorithm
195 which does not use a cache if there is an integer overflow.
197 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
198 rules for large collation sequences to optimize multiple passes and falls
199 back to alloca if malloc fails, resulting in a possible stack overflow.
200 The implementation now falls back to an uncached collation sequence lookup
203 * CVE-2013-4788 The pointer guard used for pointer mangling was not
204 initialized for static applications resulting in the security feature
205 being disabled. The pointer guard is now correctly initialized to a
206 random value for static applications. Existing static applications need
207 to be recompiled to take advantage of the fix (bug 15754).
209 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
210 to the d_name member of struct dirent, or omit the terminating NUL
211 character. (Bugzilla #14699).
213 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
214 aligned_alloc functions could allocate too few bytes or corrupt the
215 heap when passed very large allocation size values (Bugzilla #15855,
218 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
219 for AF_INET6 has been fixed (Bugzilla #16072).
221 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
222 pap_CW, quz_PE, the_NP.
224 * Substantially revised locales: gd_GB, ht_HT
226 * The LC_ADDRESS field was updated to support country_car for almost all
229 * ISO 1427 definitions were updated.
231 * ISO 3166 definitions were updated.
233 * The localedef utility now supports --big-endian and --little-endian
234 command-line options to generate locales for a different system from that
235 for which the C library was built.
237 * Binary locale files now only depend on the endianness of the system for
238 which they are generated and not on other properties of that system. As a
239 consequence, binary files generated with new localedef may be incompatible
240 with old versions of the GNU C Library, and binary files generated with
241 old localedef may be incompatible with this version of the GNU C Library,
242 in the following circumstances:
244 + Locale files may be incompatible on m68k systems.
246 + Locale archive files (but not separate files for individual locales) may
247 be incompatible on systems where plain "char" is signed.
249 * The configure option --disable-versioning has been removed. Builds with
250 --disable-versioning had not worked for several years.
252 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
253 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
255 * SystemTap probes for malloc have been introduced.
257 * SystemTap probes for slow multiple precision fallback paths of
258 transcendental functions have been introduced.
260 * Support for powerpc64le has been added.
262 * The soft-float powerpc port now supports e500 processors.
264 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
266 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
267 set of header declarations that are enabled by default, even when other
268 feature test macros or compiler options such as -std=c99 would otherwise
269 disable some of those declarations.
271 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
272 conflict with POSIX. The libbsd-compat library (which was a dummy library
273 that did nothing) has also been removed.
275 * Preliminary documentation about Multi-Thread, Async-Signal and
276 Async-Cancel Safety has been added.
278 * Change of ABI data structures for s390 and s390x:
279 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
280 allow for future hardware extensions. All library functions that accept or
281 return these structures were versioned in order to provide backwards
282 compatibility with existing code. However, not all cases can be handled
283 with interface versioning. If an application embeds either structure into
284 another structure and that structure is passed to another compilation unit
285 which expects the newer larger-sized object then any access to the new
286 fields will result in undefined behaviour. Similarly any access to fields
287 that were moved by the enlarging of the structures will cause undefined
288 behaviour. To fix the undefined behaviour all objects that are part of the
289 final in-memory image must agree on the size of structures, and this may
290 require recompilation.
294 * The following bugs are resolved with this release:
296 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
297 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
298 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
299 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
300 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
301 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
302 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
303 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
304 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
305 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
306 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
307 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
308 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
311 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
312 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
313 Distributions can re-enable building and using pt_chown via the new configure
314 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
315 considerable security risks and should only be used if the distribution
316 understands and accepts the risks.
318 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
321 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
322 fixed (Bugzilla #15330).
324 * Add support for calling C++11 thread_local object destructors on thread
325 and program exit. This needs compiler support for offloading C++11
326 destructor calls to glibc.
328 * Improved worst case performance of libm functions with double inputs and
331 * Support for priority inherited mutexes in pthread condition variables on
332 non-x86 architectures.
334 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
336 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
338 * Optimized string functions for ARM. Implemented by Will Newton and
341 * Optimized libm functions for SPARC. Implemented by David S. Miller.
343 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
346 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
347 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
349 * Added a benchmark framework to track performance of functions in glibc.
351 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
352 It is based on draft TS 18661 and currently enabled as a GNU extension.
354 * On Linux, the clock function now uses the clock_gettime system call
355 for improved precision, rather than old times system call.
357 * Added support for version-3 tz format files. This is needed when using
358 the tz database release 2013e or later, and affects a few unusual cases --
359 currently only TZ='America/Godthab' for time stamps after 2037.
361 * Added new API functions pthread_getattr_default_np and
362 pthread_setattr_default_np to get and set the default pthread
363 attributes of a process.
365 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
366 This may improve lock scaling of existing programs on TSX capable systems.
367 When the --enable-lock-elision=yes parameter is specified at configure
368 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
371 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
372 availability). Implemented by Ryan S. Arnold.
374 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
378 * The following bugs are resolved with this release:
380 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
381 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
382 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
383 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
384 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
385 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
386 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
387 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
388 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
389 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
390 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
391 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
392 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
393 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
394 14879, 14889, 14893, 14898, 14914.
396 * Optimization of memcpy for MIPS.
398 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
399 EMFILE has been fixed (Bugzilla #14889).
401 * The add-on ports collection is now distributed in the "ports" subdirectory
402 of the main GNU C Library distribution, rather than separately.
404 * Port to ARM AArch64 contributed by Linaro.
406 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
407 Optimized versions of memcpy, memset, and memcmp added for System z10 and
409 Implemented by Andreas Krebbel.
411 * The new function secure_getenv allows secure access to the environment,
412 returning NULL if running in a SUID/SGID process. This function replaces
413 the internal function __secure_getenv.
415 * SystemTap static probes have been added into the dynamic linker.
416 Implemented by Gary Benson.
418 * Optimizations of string functions strstr, strcasestr and memmem.
419 Implemented by Maxim Kuvyrkov.
421 * The minimum Linux kernel version that this version of the GNU C Library
422 can be used with is 2.6.16.
424 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
425 powerpc POWER7. Implemented by Will Schmidt.
427 * New configure option --disable-nscd builds the C library such that it
428 never attempts to contact the Name Service Caching Daemon (nscd).
429 New configure option --disable-build-nscd avoids building nscd itself;
430 this is the default if --disable-nscd is used.
432 * Improved support for cross-compilation, including cross-testing and
433 bootstrap builds without a previously built glibc.
435 * Several testsuite tests are now able to test multiple IFUNC variants of an
436 interface, rather than just testing the one that would be chooen by
439 * New configure options --with-bugurl and --with-pkgversion, for
440 distributors to use to embed their bug-reporting and package version
441 information in --help and --version output.
443 * The ttyname and ttyname_r functions on Linux now fall back to searching for
444 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
445 allows creation of chroots without the procfs mounted on /proc.
447 * The `crypt' function now fails if passed salt bytes that violate the
448 specification for those values. On Linux, the `crypt' function will
449 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
450 enabled, and fail on encrypted strings using the MD5 or DES algorithm
451 when the mode is enabled.
453 * The `clock_*' suite of functions (declared in <time.h>) is now available
454 directly in the main C library. Previously it was necessary to link with
455 -lrt to use these functions. This change has the effect that a
456 single-threaded program that uses a function such as `clock_gettime' (and
457 is not linked with -lrt) will no longer implicitly load the pthreads
458 library at runtime and so will not suffer the overheads associated with
459 multi-thread support in other code such as the C++ runtime library.
461 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
466 * The following bugs are resolved with this release:
468 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
469 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
470 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
471 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
472 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
473 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
474 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
475 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
476 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
477 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
478 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
479 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
480 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
481 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
482 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
483 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
484 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
485 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
486 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
487 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
488 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
489 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
492 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
493 configuring glibc with:
494 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
495 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
496 Implemented by H.J. Lu.
500 + define static_assert
502 + do not declare gets
504 + declare at_quick_exit and quick_exit also for ISO C11
506 + aligned_alloc. NB: The code is deliberately allows the size parameter
507 to not be a multiple of the alignment. This is a moronic requirement
508 in the standard but it is only a requirement on the caller, not the
513 + uchar.h support added
515 + CMPLX, CMPLXF, CMPLXL added
517 Implemented by Ulrich Drepper.
519 * Support for the IA-64 has been moved to ports.
521 * Remove support for anything but ELF binary format
523 * Checking versions of poll, ppoll added.
524 Implemented by Ulrich Drepper.
526 * More generic and 64-bit performance optimizations to math functions.
527 Implemented by Ulrich Drepper.
529 * New configure option --enable-obsolete-rpc makes the deprecated RPC
530 headers and functions available at compile time as they were before
531 version 2.14. This option will be removed at some time in the future
532 after the TI-RPC library becomes fully sufficient for the needs of
533 existing applications.
535 * Compatibility code for Linux kernel versions before 2.4 has been removed.
536 Note that glibc is not expected to work with any Linux kernel version
539 * New header <sys/auxv.h> and function getauxval allowing easy access to
540 the AT_* key-value pairs passed from the Linux kernel. The header also
541 defines the HWCAP_* bits associated with the AT_HWCAP key.
543 * New locales: mag_IN
545 * New configure option --enable-systemtap builds SystemTap static probes
546 into libc for setjmp and longjmp and into libpthread for various operations.
547 So far the setjmp/longjmp probes and some of the libpthread probes are
548 provided only for i*86 and x86_64.
549 Implemented by Roland McGrath and Rayson Ho.
551 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
553 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
556 * More optimized functions for SPARC. Implemented by David S. Miller.
558 * Improved support for cross-compilation, especially bootstrap builds
559 without a previously built glibc.
561 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
562 Chris Metcalf from Tilera.
564 * Support for the old ARM ABI has been removed from ports. Only the EABI is
565 now supported for ARM processors.
567 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
568 as the name of the dynamic linker, to distinguish it from the
569 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
571 * Support for CRIS has been removed from ports.
573 * A new class of installed header has been documented for low-level
574 platform-specific functionality. PowerPC added the first instance with a
575 function to provide time base register access. Contributed by Tulio
576 Magno Quites Machado Filho.
578 * ix86 configurations now install header files that are consistent with
579 what x86-64 configurations install. These same header files can be used
580 for -m32, -m64, or -mx32 builds.
581 Contributed by H.J. Lu.
583 * Math library bug fixes. A thorough audit of all open math library bugs was
584 conducted by Joseph Myers. Significant progress was made on many math
585 library bugs resulting in more accurate exceptions and function results.
586 Many thanks to all those that contributed including Andreas Jaeger for his
587 patch review and work on the x87 trigonometric instruction issues.
589 * Timezone data is no longer installed. Timezone-related binaries and scripts
590 will continue to be installed. Users should obtain their timezone data from
591 their distribution provider or from the tzdata package at
592 <ftp://munnari.oz.au/pub/>.
596 * The following bugs are resolved with this release:
598 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
599 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
600 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
601 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
602 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
603 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
604 13484, 13506, 13515, 13523, 13524, 13538, 13540
606 * New program pldd to list loaded object of a process
607 Implemented by Ulrich Drepper.
609 * Add nss_db support back to glibc. No more dependency on Berkeley db
610 and support for initgroups lookups.
611 Implemented by Ulrich Drepper.
613 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
614 Contributed by HJ Lu.
616 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
617 Contributed by HJ Lu.
619 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
620 on x86-32 and x86-64.
621 Contributed by Liubov Dmitrieva.
623 * Optimized strchr and strrchr for SSE on x86-32.
624 Contributed by Liubov Dmitrieva.
626 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
627 for x86-64 and x86-32.
628 Contributed by Liubov Dmitrieva.
630 * New interfaces: scandirat, scandirat64
631 Implemented by Ulrich Drepper.
633 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
634 Implemented by Ulrich Drepper.
636 * nscd now also caches the netgroup database.
637 Implemented by Ulrich Drepper.
639 * Integrate libm with gcc's -ffinite-math-only option.
640 Implemented by Ulrich Drepper.
642 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
643 to math functions. Implemented by Ulrich Drepper.
645 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
646 Implemented by Ulrich Drepper.
648 * New Linux interfaces: process_vm_readv, process_vm_writev
650 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
651 Implemented by Ulrich Drepper.
653 * Optimized nearbyint and strcasecmp for PPC.
654 Implemented by Adhemerval Zanella.
656 * New locales: bho_IN, unm_US, es_CU, ta_LK
660 * The following bugs are resolved with this release:
662 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
663 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
664 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
665 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
666 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
667 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
668 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
669 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
670 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
671 12795, 12811, 12813, 12814, 12841
673 * The RPC implementation in libc is obsoleted. Old programs keep working
674 but new programs cannot be linked with the routines in libc anymore.
675 Programs in need of RPC functionality must be linked against TI-RPC.
676 The TI-RPC implementation is IPv6 enabled and there are other benefits.
678 Visible changes of this change include (obviously) the inability to link
679 programs using RPC functions without referencing the TI-RPC library and the
680 removal of the RPC headers from the glibc headers.
681 Implemented by Ulrich Drepper.
683 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
684 syncfs, setns, sendmmsg
686 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
687 yue_HK, lij_IT, mhr_RU
689 * New encodings: CP770, CP771, CP772, CP773, CP774
691 * New program sotruss to trace calls through PLTs
692 Implemented by Ulrich Drepper.
694 * The malloc hook implementation is marked deprecated and will be removed
695 from the default implementation in the next version. The design never
696 worked ever since the introduction of threads. Even programs which do
697 not create threads themselves can use multiple threads created internally.
701 * The following bugs are resolved with this release:
703 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
704 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
705 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
706 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
709 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
711 * POWER7 optimizations: memset, memcmp, strncmp
713 * New optimized string functions for x86-64: strnlen (SSE2),
714 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
715 Implemented by Ulrich Drepper.
719 * The following bugs are resolved with this release:
721 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
722 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
723 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
724 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
725 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
726 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
727 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
728 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
730 * New interfaces: pthread_getname_np, pthread_setname_np
732 * New Linux interface: recvmmsg
734 * STT_GNU_IFUNC implemented for Sparc by David Miller.
736 * The dynamic linker now recognizes supported ABI versions from the
737 EI_ABIVERSION field in the ELF header.
738 Implemented by Ulrich Drepper.
740 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
741 will not be used to fill in password fields in the passwd.byname replies.
742 Instead it is used to synthesize the shadow.byname table, should it be
743 missing. This is a useful mode in some installations involving Solaris.
744 Implemented by Ulrich Drepper.
746 * New locales: kok_IN, sq_MK, cv_RU
750 * The following bugs are resolved with this release:
752 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
753 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
754 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
755 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
756 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
757 10789, 10817, 10823, 10840, 10847
759 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
761 Implemented by Ulrich Drepper.
763 * Checking version of longjmp added that fails if an uninitialized stack
764 frame would be created. Implemented by Ulrich Drepper.
766 * STT_GNU_IFUNC is now supported in static executables.
767 Implemented by H.J. Lu.
769 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
771 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
772 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
773 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
774 Contributed by H.J. Lu.
776 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
777 Implemented by Ulrich Drepper.
779 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
781 Contributed by H.J. Lu.
783 * Support for fma instruction in AVX on x86-64.
784 Implemented by H.J. Lu and Ulrich Drepper.
786 * AVX support in x86-64 auditing support in ld.so.
787 Implemented by H.J. Lu.
789 * STB_GNU_UNIQUE support added.
790 Implemented by Ulrich Drepper.
792 * Implement second fallback mode for optimized DNS lookup for even more
793 broken environments. If two requests from the same port are not
794 handled correctly close the socket and open a new one before sending
795 the second request. The 'single-request-reopen' option in /etc/resolv.conf
796 can be used to select this mode right away, instead of rediscovering the
797 necessity is every process again.
798 Implemented by Ulrich Drepper.
800 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
801 Implemented by Adam Tkac.
803 * Optimized iconv conversions for S390x.
804 Implemented by Andreas Krebbel.
806 * Using condvars with PI mutexes is now more efficient due to kernel
807 support for requeueing to PI futexes. NPTL support added for x86-64.
808 Implemented by Ulrich Drepper.
810 * New locales: ps_AF, my_MM
814 * The following bugs are resolved with this release:
816 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
817 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
818 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
819 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
820 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
822 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
823 Implemented by Ulrich Drepper.
825 * New Linux interfaces: accept4, fallocate, fallocate64.
826 Implemented by Ulrich Drepper.
828 * Correct declarations of string function when used in C++ code. This
829 could lead to compile errors for invalid C++ code.
831 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
834 * New POSIX 2008 interface: psiginfo
835 Implemented by Ulrich Drepper.
837 * New ISO C++1x interfaces: quick_exit, at_quick_exit
838 Implemented by Ulrich Drepper.
840 * Support for selecting between multiple function definitions at runtime
841 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
843 * The libcrypt library can now use the hash function implementations in
844 NSS. Implemented by Ulrich Drepper.
846 * The malloc implementation can be compiled to be less memory efficient
847 but higher performing in multi-threaded programs.
848 Implemented by Ulrich Drepper.
850 * New locales: nan_TW@latin, ks_IN
852 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
853 Implemented by Ulrich Drepper.
855 * Extended printf hook support. It is possible to use user-defined types
856 and extend existing format specifiers.
857 Implemented by Ulrich Drepper.
859 * Handling for group shadow files has been added.
860 Implemented by Ulrich Drepper.
862 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
863 servers (the case, e.g., for some people using the built-in DNS
864 server in ADSL modems/routers). There is a once-per-process timeout
865 in case of a broken server. To avoid it, users can run nscd or put
866 'options single-request' in /etc/resolv.conf.
867 Implemented by Ulrich Drepper.
871 * The following bugs are resolved with this release:
873 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
874 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
875 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
876 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
877 6968, 6974, 6980, 6995, 7008, 7009, 7029
879 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
880 up at the same time. Implemented by Ulrich Drepper.
882 * TLS descriptors for LD and GD on x86 and x86-64.
883 Implemented by Alexandre Oliva.
885 * getaddrinfo now handles DCCP and UDPlite.
886 Implemented by Ulrich Drepper.
888 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
889 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
890 Implemented by Ulrich Drepper.
892 * New implementation of memmem, strstr, and strcasestr which is O(n).
893 Implemented by Eric Blake.
895 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
897 * Implement "e" option for popen to open file descriptor with the
898 close-on-exec flag set. Implemented by Ulrich Drepper.
900 * Implement "b" mode for fmemopen. In this mode writes writes don't
901 implicitly add a NUL byte and seeks from the end of the buffer really
902 use the buffer end, not the string length as the basis.
903 Implemented by Ulrich Drepper.
905 * Many functions, exported and internal, now atomically set the close-on-exec
906 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
908 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
910 Implemented by Pravin Satpute.
912 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
916 * The following bugs are resolved with this release:
918 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
919 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
920 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
921 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
922 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
923 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
924 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
926 * New locales: bo_CN, bo_IN, shs_CA.
928 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
930 * Sorting rules for some Indian languages (Devanagari and Gujarati).
931 Implemented by Pravin Satpute.
933 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
935 * nscd caches now all timeouts for DNS entries
936 Implemented by Ulrich Drepper.
938 * nscd is more efficient and wakes up less often.
939 Implemented by Ulrich Drepper.
941 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
942 vdprintf, and obstack_vprintf.
943 Implemented by Jakub Jelinek.
945 * Faster memset for x86-64.
946 Implemented by Harsha Jagasia and H.J. Lu.
948 * Faster memcpy on x86.
949 Implemented by Ulrich Drepper.
951 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
952 Implemented by Ulrich Drepper.
954 * Faster sqrt and sqrtf implemention for some PPC variants.
955 Implemented by Steven Munroe.
959 * The following bugs are resolved with this release:
961 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
962 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
963 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
964 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
965 5071, 5103, 5104, 5112, 5113, 5184, 5186
967 * More checking functions: fread, fread_unlocked, open*, mq_open.
968 Implemented by Jakub Jelinek and Ulrich Drepper.
970 * Extend fortification to C++. Implemented by Jakub Jelinek.
972 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
973 by not recognizing 'a' as a modifier when those specs are requested.
974 Implemented by Jakub Jelinek.
976 * PPC optimizations to math and string functions.
977 Implemented by Steven Munroe.
979 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
980 options to be passed. Implemented by Ulrich Drepper.
982 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
984 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
985 Implemented by Ulrich Drepper.
987 * Handle private futexes in the NPTL implementation.
988 Implemented by Jakub Jelinek and Ulrich Drepper.
990 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
991 Implemented by Roland McGrath and Ulrich Drepper.
993 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
995 * SHA-256 and SHA-512 based password encryption.
996 Implemented by Ulrich Drepper.
998 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
999 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
1002 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
1003 Implemented by Ulrich Drepper.
1007 * The following bugs are resolved with this release:
1009 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
1010 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
1011 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
1012 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
1013 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
1014 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
1015 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
1018 * New Linux interfaces: epoll_pwait, sched_getcpu.
1020 * New generic interfaces: strerror_l.
1022 * nscd can now cache the services database. Implemented by Ulrich Drepper.
1026 * The following bugs are resolved with this release:
1028 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
1029 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
1030 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
1031 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
1032 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
1033 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
1034 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
1035 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
1036 3225, 3251, 3252, 3253, 3273
1038 * For Linux, the sorting of addresses returned by getaddrinfo now also
1039 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
1040 Implemented by Ulrich Drepper.
1042 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
1043 Implemented by Ulrich Drepper.
1045 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
1047 * New iconv module for MIK. Contributed by Alexander Shopov.
1049 * For sites with broken group and/or passwd database, the auto-propagate
1050 option of nscd can prevent creating ID lookup entries from the results
1051 of a name lookup and vice versa. This usually is no problem but some
1052 site might have problems with the default behavior.
1053 Implemented by Ulrich Drepper.
1055 * Iterating over entire database in NIS can be slow. With the
1056 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
1057 to trade time for memory. The entire database will be read at once.
1058 Implemented by Ulrich Drepper.
1060 * The interfaces introduced in RFC 3542 have been implemented by
1063 * Support for the new ELF hash table format was added by Ulrich Drepper.
1065 * Support for priority inheritance mutexes added by Jakub Jelinek and
1068 * Support for priority protected mutexes added by Jakub Jelinek.
1070 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1071 or_IN, csb_PL, fy_NL, sr_ME.
1075 * More overflow detection functions.
1077 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1078 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1080 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1081 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1082 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1083 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1084 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1085 by Masahide Washizawa.
1087 * It is now possible to install audit libraries for the dynamic linker using
1088 LD_AUDIT. Implemented by Ulrich Drepper.
1090 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1091 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1092 For a libc and libpthread that works well on Linux 2.4 kernels, we
1093 recommend using the stable 2.3 branch.
1095 * The new function open_wmemstream acts like open_memstream,
1096 but uses a wchar_t wide character buffer.
1098 * The new function ppoll is an improved version of poll, similar to pselect.
1100 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1101 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1102 renameat, unlinkat, linkat, symlinkat, readlinkat.
1104 * New Linux kernel system calls: unshare,
1105 inotify_init, inotify_add_watch, inotify_rm_watch.
1107 * The euidaccess function is now also known by the alias eaccess,
1108 for compatibility with some other systems.
1110 * Timezone data updated to 2006b version.
1114 * The following bugs are resolved with this release:
1116 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1117 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1118 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1119 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1120 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1121 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1123 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1125 * As of this release, GCC 4 can be used to compile the C Library.
1127 * Timezone data updated to 2005m version.
1131 * The following bugs are resolved with this release:
1133 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1134 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1135 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1136 777, 787, 821, 822, 823, 825
1138 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1142 * Support for RFC 3678. Real implementations exist only for Linux so far.
1143 Implemented by Ulrich Drepper.
1145 * nscd can now cache entries persistently. Expiring entries are reloaded.
1146 For speedups the cache can be shared in memory with client processes.
1147 Implemented by Ulrich Drepper.
1149 * nscd can now perform SELinux checks.
1150 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1152 * getaddrinfo queries are now cached. Canonical name lookup is performed
1154 Implemented by Ulrich Drepper.
1156 * The nothrow function attribute is used when headers are used by gcc when
1157 compiling C code. This can avoid significant amounts of exception
1160 * The malloc functions perform more error checking and are stricter when
1161 it comes to reacting on errors. The default action is to terminate
1162 the process after showing an error message. Implemented by Ulrich Drepper.
1164 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1165 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1167 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1168 namespaces using the new function dlmopen(). This feature is of course,
1169 like most other dynamic loading functionality, not available in statically
1170 linked applications. Implemented by Ulrich Drepper.
1172 * Low-overhead boundary checking variants of string and some stdio functions
1173 were added. These are to be used in conjunction with a gcc patch by
1174 Jakub Jelinek which adds calls to these functions if possible.
1175 Implemented by Jakub Jelinek and Ulrich Drepper.
1177 * Old code for several operating systems and machine architectures that
1178 have not been in working condition in a long time have been removed from
1179 the main source tree maintained by the GNU C Library's maintainers.
1180 These files are now reside in the separate `ports' source module
1181 that is usable as an add-on when building the library.
1185 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1186 interrogate the dynamic linker, compatible with the Solaris interface.
1188 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1189 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1191 * getifaddrs now uses the netlink interface on Linux to get its information.
1192 Implemented by Thorsten Kukuk.
1194 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1195 Implemented by Ulrich Drepper.
1197 * support for non-executable stacks on x86 has been added. Changes mostly
1200 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1203 * getaddrinfo now performs destination address selection according to
1208 * Thread-safe interfaces for many functions that access locale data
1209 were added in version 2.3, but these features were omitted from NEWS.
1210 Many functions have variants with an `_l' suffix that take a `locale_t'
1211 object as a parameter rather than consulting the current locale.
1212 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1213 create and maintain `locale_t' objects. Additionally, the new function
1214 `uselocale' sets "the current locale" (as used by functions not so
1215 parameterized) set for an individual thread. These features were added
1216 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1218 * The functions getresuid, getresgid, setresuid, and setresgid, which
1219 have long been available on Linux, are now declared in <unistd.h>
1220 and are now also available on the Hurd.
1222 * ELF thread-local storage support (TLS) now works on x86-64.
1224 * The new dynamic string token $LIB is expanded in shared library names.
1225 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1227 * Aldy Hernandez contributed complete software floating point support for
1228 PowerPC machines with no FPU.
1230 * fexecve is implemented on Linux.
1232 * The `btowc' function should work at least twice as fast due to
1233 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1235 * With approriate thread add-ons cancelable functions are now implemented
1236 in libc.so as well. No need to call the function in libpthread. This
1237 change allowed to finally disable the incorrect and expensive handling
1238 of weak definition in ld.so.
1240 * Yet more PLT entries in libc.so have been removed. We finally arrived
1241 at the bare minimum. Startup times improved appropriately.
1243 * Support for the new Linux/x86 system call interface was added. The
1244 AT_SYSINFO auxiliary vector entry is recognized and handled.
1248 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1251 * iconv (the program and the interface) now accepts empty names (excluding
1252 options like //TRANSLIT) to mean "use charset of current locale".
1254 * localedef can now transliterate characters in strings which are not in
1255 the provided charmap. The information from the input locale is used.
1257 * Prelinking support was added for ELF targets. This requires additional
1258 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1260 * Read-only stdio streams now use mmap to speed up operation by eliminating
1261 copying and buffer underflows. To use add 'm' to the mode string of
1262 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1264 * The malloc functions were completely rewritten by Wolfram Gloger based
1265 on Doug Lea's malloc-2.7.0.c.
1267 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1268 implementation of regex.
1270 * Bruno Haible upgraded the iconv and locale implementation to support
1273 * Contents of the LC_* and LANG environment variables in the CEN style are
1274 not recognized anymore. It never was used. Change by Ulrich Drepper.
1276 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1277 thread-local storage (TLS) ABI on some platforms.
1278 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1280 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1281 EUC-JISX0213, and TSCII.
1283 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1284 BSD-compatible interface for getting all network interface addresses.
1285 Implementation for IPv4 by Roland McGrath.
1287 * Loading of locale data is faster due to the introduction of a locale
1288 archive. Implemented by Roland McGrath and Ulrich Drepper.
1290 * Startup times are significantly reduced by not using exported functions
1291 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1294 * Steven Munroe contributed a port to PowerPC64/Linux.
1298 * The Hurd now uses the GNU libio implementation of stdio rather than the
1299 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1301 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1302 with the same behavior as the Linux system call of the same name.
1306 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1307 128-bit long double format.
1309 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1310 IBM1161, and IBM1162 charsets.
1312 * Andreas Jaeger contributed a port to x86-64/Linux.
1314 * Peter Bruin contributed a port to PowerPC/Hurd.
1316 * libc functions using I/O streams now can handle wide-oriented streams
1319 * optimizations in the dynamic linker. Binaries created by recent binutils
1320 versions start up quicker due to reduced time spent on relocations.
1322 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1326 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1327 asinh, atanh, j0 for the 128-bit long double format.
1329 * Bruno Haible updated all the code handling Unicode in some form to
1330 support Unicode 3.1.
1332 * Speed of regex for single-byte locales is back to previous levels.
1333 Patch by Isamu Hasegawa.
1335 * Alpha, SPARC, and IA-64 now also using floating stacks.
1337 * Startup time of internationalized applications greatly improved through
1338 iconv cache. Use iconvconfig to generate the cache file.
1339 Contributed by Ulrich Drepper.
1341 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1342 severe performance problems. Patch by David Mosberger.
1344 * The Hurd port got a lot more functionality like AIO, various stdio
1345 extensions, etc. Mainly done by Roland McGrath.
1347 * mtrace can now lookup symbols in shared libraries.
1351 * Intel's IA-64 math library is largely integrated. It provides fast and
1352 accurate implementatations for most basic and standard math functions
1353 in float, double, and long double format.
1355 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1356 and asin for the 96-bit long double format and asin, log, tan for the
1357 128-bit long double format.
1359 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1360 The basic double functions exist today. Contributed by Abraham Ziv
1361 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1362 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1364 * An asynchronous name lookup library was added. The interface is designed
1365 after POSIX AIO. The proposal was circulated beforehand to get comments.
1366 No negative ones came in. Implemented by Ulrich Drepper.
1368 * Port to S390/64bit contributed by Martin Schwidefsky
1369 <schwidefsky@de.ibm.com>.
1371 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1372 of functions for Linux/IA-64.
1374 * The RPC code is now thread safe. Threads can now use the same service
1375 of different services at the same time. Patch by Eric Norum
1376 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1378 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1379 family of functions for Linux/S390.
1381 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1382 of functions for Linux/x86.
1384 * Port to Linux/CRIS contributed by Axis Communications.
1388 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1389 we can now check for namespace violations and missing declarations. The
1390 result is that almost all headers are now Unix-compliant (as defined in
1391 the upcoming XPG6). The negative side is that some programs might need
1392 corrections, too, if they depend on the incorrect form of the headers in
1393 previous versions which defined too many symbols and included too many
1396 * regex now handles multibyte character sets correctly.
1397 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1399 * iconv (the program) does now conform to the upcoming XPG6 and handles
1400 charmaps. Instead of the charset names the path of charmaps can be
1401 provided and the conversion happens based on this data.
1402 Contributed by Ulrich Drepper.
1404 * The locale program now provides detailed information about the installed
1409 only lists the names of the supported locales
1413 provides details such as country, language, and codeset name.
1414 Contributed by Ulrich Drepper.
1418 * The gencat program now parses the input file according to the charset
1419 selected by the LC_CTYPE category. This is important for stateful
1420 character sets. To make generating catalogs easier there is a way
1421 to overwrite the charset selected by the locale: before the first
1422 message or $ quote line the catalog can contain a line like
1424 $ codeset=ISO-8859-2
1426 to select the charset (ISO-8859-2 in this case).
1428 Implemented by Shinya Hanataka and Ulrich Drepper.
1430 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1431 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1432 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1434 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1435 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1437 * The LANGUAGE environment variable is now ignored unless the locale is
1438 changed from the default "C" locale.
1440 * The usual bug fixes.
1444 * Greg McGary added runtime support for bounds checking using gcc's
1445 new -fbounded-pointers option. ix86 target is complete. PowerPC
1448 * Thorsten Kukuk added secure mode support to nscd.
1450 * The Berkeley db libraries have been removed.
1452 Related, the nss_db module is now in a separate package since it
1453 obviously requires a database library being available.
1455 * Wide character I/O streams implemented by Ulrich Drepper.
1457 * Functions from the extended socket API added by Ulrich Drepper.
1459 * Functions feenableexcept and fedisableexcept to control the
1460 behaviour of individual exceptions have been added by Andreas Jaeger.
1462 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1464 * The resolver code has been updated from bind 8.2.3-T5B which supports
1465 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1468 This change could in some situations effect backward compatibility. Since
1469 now `_res' is a thread-local instead of a global variable, modifying it
1470 in one thread does not have any effect in other threads.
1472 The resolver library was also extended to allow IPv6 as the transport
1473 protocol for the requests. This work was done by Stig Venaas.
1475 * Compatibility code for K&R C compilers has been removed from the
1476 header files. A ISO C compiler is needed to use the library
1477 (conforming to either C89 or C99 standard).
1479 * Complete rewrite of the localedef program to support multibyte character
1480 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1481 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1482 Implemented by Ulrich Drepper.
1484 Bruno Haible significantly improved the generation and use of the data
1485 structures for the wide character tables.
1487 * Plural handling in gettext implemented by Ulrich Drepper.
1489 * The utmp daemon has been removed.
1491 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1493 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1496 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1498 * POSIX barriers implemented by Kaz Kylheku.
1500 * POSIX spawn function family implemented by Ulrich Drepper.
1502 * POSIX spinlocks are now available.
1504 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1506 * the configure option --enable-kernel=X.Y.Z allows to strip out
1507 compatibility for kernel versions before X.Y.Z. This is currently only
1508 implemented for Linux.
1510 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1511 field sin6_scope_id. This means that all programs using IPv6 should be
1512 recompiled. Don't expect binary compatibility with previous glibc
1515 * various conversion modules for IBM character sets contributed by
1518 * IA-64 port by Jes Sorensen and HJ Lu.
1532 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1534 * New xdr functions are added; some rpc functions are now 64bit clean.
1536 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1538 * Fixed known incompatibilities with glibc 2.0.
1540 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1542 * Optimized a number of functions (especially the ELF dynamic loader).
1544 * Update timezone data files.
1546 * lots of charmaps corrections
1548 * some new locale definitions and charmaps
1553 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1554 conform to POSIX member type requirements. Symbol versions have been
1555 adjusted as needed within the library, and for direct use by applications,
1556 but there is potential for problems if third-party libraries use
1557 struct timeval as part of their interface. This does not present
1558 a problem for X and other "essential" system libraries.
1560 * An additional locale model to support C++ Standard Library locale
1561 model and probably more was implemented by Ulrich Drepper.
1563 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1566 * Miles Bader provided the `argp' function family to support hierachical
1567 command line argument parsing, layered on top of getopt.
1569 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1571 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1574 * scanf recognizes the %a and %A format for scanning floating point numbers.
1576 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1577 information and interfaces for the available integer types.
1579 * about 130 new math functions were added to implement the ISO C9x math
1582 * the new header <complex.h> contains definitions of the complex math
1583 functions from ISO C 9X.
1585 * the new header <tgmath.h> defines generic macros to use complex or
1586 real valued functions.
1588 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1590 * Andreas Jaeger provided a test suite for the math library.
1592 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1594 * Ulrich Drepper added character set conversion functions (iconv).
1596 * Optimized string functions have been added.
1598 * The localedata addon is now part of glibc.
1600 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1602 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1603 daemon for NSS (nscd).
1605 Missing a better place here are some numbers on improvements. Under
1606 Linux 2.1.125 un-tar-ing the kernel sources takes
1610 using local files 12.19s 6.88s 22.91s
1612 using NIS 13.92s 8.91s 26.34s
1614 using NIS & nscd 10.37s 7.34s 25.30s
1616 using NIS+ 27.57s 30.37s 640.46s
1618 using NIS+ & nscd 10.25s 7.83s 26.51s
1620 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1622 Keep in mind that non-namelookup related operations dominate above times.
1623 It was just a common complain that using NIS+ unpacking the kernel is
1626 [1] The old nscd implementation is not available anymore since it was
1627 distributed with glibc up to version 2.0.98 and thus is now replaced.
1629 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1631 * Mark Kettenis provided a Hesiod NSS module.
1633 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1634 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1636 * rcmd can now handle netgroups (Dick Streefland).
1638 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1641 * Support for the IPv6 protocol has been added to the socket API, as per the
1642 latest draft standards.
1644 * Support for Linux 2.2 has been added.
1646 * Interface changes relative to the latest 2.0.x release:
1647 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1648 addseverity NEW: Unix98
1649 alphasort64 NEW: LFS
1650 argp_err_exit_status NEW: argp, GNU ext
1651 argp_error NEW: argp, GNU ext
1652 argp_failure NEW: argp, GNU ext
1653 argp_help NEW: argp, GNU ext
1654 argp_parse NEW: argp, GNU ext
1655 argp_program_bug_address NEW: argp, GNU ext
1656 argp_program_version NEW: argp, GNU ext
1657 argp_program_version_hook NEW: argp, GNU ext
1658 argp_state_help NEW: argp, GNU ext
1659 argp_usage NEW: argp, GNU ext
1660 authdes_create NEW: Secure RPC
1661 authdes_getucred NEW: Secure RPC
1662 authdes_pk_create NEW: Secure RPC
1663 backtrace NEW: GNU ext.
1664 backtrace_symbols NEW: GNU ext.
1665 backtrace_symbols_fd NEW: GNU ext.
1667 cacosf NEW: ISO C 9x
1668 cacosh NEW: ISO C 9x
1669 cacoshf NEW: ISO C 9x
1670 cacoshl NEW: ISO C 9x
1671 cacosl NEW: ISO C 9x
1678 casinf NEW: ISO C 9x
1679 casinh NEW: ISO C 9x
1680 casinhf NEW: ISO C 9x
1681 casinhl NEW: ISO C 9x
1682 casinl NEW: ISO C 9x
1684 catanf NEW: ISO C 9x
1685 catanh NEW: ISO C 9x
1686 catanhf NEW: ISO C 9x
1687 catanhl NEW: ISO C 9x
1688 catanl NEW: ISO C 9x
1689 cbc_crypt NEW: Secure RPC
1693 ccoshf NEW: ISO C 9x
1694 ccoshl NEW: ISO C 9x
1700 cimagf NEW: ISO C 9x
1701 cimagl NEW: ISO C 9x
1702 clearerr_locked REMOVED
1703 clntunix_create NEW: sunrpc ext
1705 clog10 NEW: ISO C 9x
1706 clog10f NEW: ISO C 9x
1707 clog10l NEW: ISO C 9x
1717 cprojf NEW: ISO C 9x
1718 cprojl NEW: ISO C 9x
1720 crealf NEW: ISO C 9x
1721 creall NEW: ISO C 9x
1726 csinhf NEW: ISO C 9x
1727 csinhl NEW: ISO C 9x
1730 csqrtf NEW: ISO C 9x
1731 csqrtl NEW: ISO C 9x
1735 ctanhf NEW: ISO C 9x
1736 ctanhl NEW: ISO C 9x
1738 des_setparity NEW: Secure RPC
1739 ecb_crypt NEW: Secure RPC
1740 endutxent NEW: Unix98
1742 exp10f NEW: ISO C 9x
1743 exp10l NEW: ISO C 9x
1747 fattach NEW: STREAMS
1748 fdetach NEW: STREAMS
1752 feclearexcept NEW: ISO C 9x
1753 fegetenv NEW: ISO C 9x
1754 fegetexceptflag NEW: ISO C 9x
1755 fegetround NEW: ISO C 9x
1756 feholdexcept NEW: ISO C 9x
1758 feraiseexcept NEW: ISO C 9x
1759 ferror_locked REMOVED
1760 fesetenv NEW: ISO C 9x
1761 fesetexceptflag NEW: ISO C 9x
1762 fesetround NEW: ISO C 9x
1763 fetestexcept NEW: ISO C 9x
1764 feupdateenv NEW: ISO C 9x
1765 fflush_locked REMOVED
1769 fgets_unlocked NEW: GNU ext.
1770 fileno_locked REMOVED
1782 fputc_locked REMOVED
1783 fputs_unlocked NEW: GNU ext.
1784 fread_unlocked NEW: GNU ext.
1789 fstatvfs NEW: Unix98
1793 ftruncate64 NEW: LFS
1795 fwrite_unlocked NEW: GNU ext.
1796 gai_strerror NEW: IPv6
1800 getchar_locked REMOVED
1802 getdate_err NEW: Unix98
1803 getdate_r NEW: GNU ext.
1805 getnameinfo NEW: IPv6
1806 getnetname NEW: Secure RPC
1807 getpmsg NEW: STREAMS
1808 getpt NEW: Unix98 PTY
1809 getrlimit64 NEW: LFS
1810 getutxent NEW: Unix98
1811 getutxid NEW: Unix98
1812 getutxline NEW: Unix98
1813 glob64 NEW: GNU ext.
1814 globfree64 NEW: GNU ext.
1815 gnu_get_libc_release NEW: GNU ext.
1816 gnu_get_libc_version NEW: GNU ext.
1817 grantpt NEW: Unix98 PTY
1818 host2netname NEW: Secure RPC
1820 iconv_close NEW: iconv
1821 iconv_open NEW: iconv
1822 if_freenameindex NEW: IPv6
1823 if_indextoname NEW: IPv6
1824 if_nameindex NEW: IPv6
1825 if_nametoindex NEW: IPv6
1826 in6addr_any NEW: IPv6
1827 in6addr_loopback NEW: IPv6
1828 inet6_isipv4mapped NEW: IPv6
1829 isastream NEW: STREAMS
1830 iswblank NEW: GNU ext.
1831 key_decryptsession NEW: Secure RPC
1832 key_decryptsession_pk NEW: Secure RPC
1833 key_encryptsession NEW: Secure RPC
1834 key_encryptsession_pk NEW: Secure RPC
1835 key_gendes NEW: Secure RPC
1836 key_get_conv NEW: Secure RPC
1837 key_secretkey_is_set NEW: Secure RPC
1838 key_setnet NEW: Secure RPC
1839 key_setsecret NEW: Secure RPC
1840 llrint NEW: ISO C 9x
1841 llrintf NEW: ISO C 9x
1842 llrintl NEW: ISO C 9x
1843 llround NEW: ISO C 9x
1844 llroundf NEW: ISO C 9x
1845 llroundl NEW: ISO C 9x
1850 lrintf NEW: ISO C 9x
1851 lrintl NEW: ISO C 9x
1852 lround NEW: ISO C 9x
1853 lroundf NEW: ISO C 9x
1854 lroundl NEW: ISO C 9x
1856 makecontext NEW: Unix98
1857 mempcpy NEW: GNU ext.
1860 modify_ldt NEW: kernel
1864 nearbyint NEW: ISO C 9x
1865 nearbyintf NEW: ISO C 9x
1866 nearbyintl NEW: ISO C 9x
1867 netname2host NEW: Secure RPC
1868 netname2user NEW: Secure RPC
1869 nexttoward NEW: ISO C 9x
1870 nexttowardf NEW: ISO C 9x
1871 nexttowardl NEW: ISO C 9x
1875 passwd2des NEW: Secure RPC
1877 pow10f NEW: GNU ext.
1878 pow10l NEW: GNU ext.
1881 printf_size NEW: GNU ext.
1882 printf_size_info NEW: GNU ext.
1883 profil_counter REMOVED
1884 pthread_mutexattr_getkind_np REPLACED
1885 pthread_mutexattr_setkind_np REPLACED
1886 ptsname NEW: Unix98 PTY
1887 ptsname_r NEW: Unix98 PTY
1889 putchar_locked REMOVED
1890 putgrent NEW: GNU ext.
1892 putpmsg NEW: STREAMS
1893 pututxline NEW: Unix98
1897 readdir64_r NEW: LFS
1898 remquo NEW: ISO C 9x
1899 remquof NEW: ISO C 9x
1900 remquol NEW: ISO C 9x
1902 roundf NEW: ISO C 9x
1903 roundl NEW: ISO C 9x
1905 scalbln NEW: ISO C 9x
1906 scalblnf NEW: ISO C 9x
1907 scalblnl NEW: ISO C 9x
1909 sendfile NEW: kernel
1910 setcontext NEW: Unix98
1911 setrlimit64 NEW: LFS
1912 setutxent NEW: Unix98
1914 sigignore NEW: Unix98
1915 sigqueue NEW: POSIX.1b
1916 sigrelse NEW: Unix98
1917 sigset NEW: POSIX.1b
1918 sigtimedwait NEW: POSIX.1b
1919 sigwaitinfo NEW: POSIX.1b
1920 sincos NEW: GNU ext.
1921 sincosf NEW: GNU ext.
1922 sincosl NEW: GNU ext.
1926 strcasestr NEW: GNU ext.
1927 strtoimax NEW: ISO C 9x
1928 strtoumax NEW: ISO C 9x
1929 strverscmp NEW: GNU ext.
1930 svcauthdes_stats NEW: Secure RPC
1931 svcunix_create NEW: sunrpc etx
1932 svcunixfd_create NEW: sunrpc ext
1933 swapcontext NEW: Unix98
1934 tcgetsid NEW: Unix98 PTY
1935 tdestroy NEW: GNU ext.
1936 tgamma NEW: ISO C 9x
1937 tgammaf NEW: ISO C 9x
1938 tgammal NEW: ISO C 9x
1942 truncf NEW: ISO C 9x
1943 truncl NEW: ISO C 9x
1945 unlockpt NEW: Unix98 PTY
1946 updwtmpx NEW: Unix98
1947 user2netname NEW: Secure RPC
1948 utmpxname NEW: Unix98
1949 versionsort NEW: GNU ext.
1950 versionsort64 NEW: GNU ext.
1952 wcscasecmp NEW: GNU ext.
1953 wcsncasecmp NEW: GNU ext.
1954 wcsnlen NEW: GNU ext.
1955 wcstoimax NEW: ISO C 9x
1956 wcstoll NEW: ISO C 9x
1957 wcstoull NEW: ISO C 9x
1958 wcstoumax NEW: ISO C 9x
1960 wordexp NEW: POSIX.2
1961 wordfree NEW: POSIX.2
1962 write_profiling REMOVED
1963 xdecrypt NEW: Secure RPC
1964 xdr_authdes_cred NEW: Secure RPC
1965 xdr_authdes_verf NEW: Secure RPC
1966 xdr_cryptkeyarg NEW: Secure RPC
1967 xdr_cryptkeyarg2 NEW: Secure RPC
1968 xdr_cryptkeyres NEW: Secure RPC
1969 xdr_getcredres NEW: Secure RPC
1970 xdr_key_netstarg NEW: Secure RPC
1971 xdr_key_netstres NEW: Secure RPC
1972 xdr_keybuf NEW: Secure RPC
1973 xdr_keystatus NEW: Secure RPC
1974 xdr_netnamestr NEW: Secure RPC
1975 xdr_sizeof NEW: Secure RPC
1976 xdr_unixcred NEW: sunrpc ext
1977 xencrypt NEW: Secure RPC
1978 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1989 * inet_ntoa is thread-safe
1991 * updwtmp is moved from libutil to libc
1993 * rewrite of cbrt function
1995 * update of timezone data
2009 * add atoll function
2011 * fix complex problems in Berkeley DB code
2013 * fix math functions
2017 * fixed lots of header problems (especially Linux/GNU specific)
2019 * dynamic loader preserves all registers
2021 * Roland McGrath provided support for handling of auxiliary objects in
2022 the ELF dynamic loader.
2024 * support for parallel builds is improved
2028 * GNU extensions are no longer declared by default. To enable them you
2029 must define the macro `_GNU_SOURCE' in your program or compile with
2032 * The library has changed from using GNU ld symbol aliases to using weak
2033 symbols where available. The ELF object file format supports weak
2034 symbols; GNU ld also supports weak symbols in the a.out format. (There
2035 is also now support for other GNU ld extensions in ELF. Use the
2036 `--with-elf' option to configure to indicate you have ELF, and
2037 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
2038 of many files which contained only symbol aliases, reducing the size of
2039 the source and the compiled library; many other files were renamed to
2040 less cryptic names previously occupied by the symbol alias files.
2041 There is a new header file <elf.h> for programs which operate on
2042 files in the ELF format.
2044 * Converted to Autoconf version 2, so `configure' has more options.
2045 Run `configure --help' to see the details.
2047 * The library can now be configured to build profiling, highly-optimized
2048 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
2049 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
2050 `configure' enable building these extra libraries. The shared library is
2051 built by default when using both ELF and GNU ld. When shared libraries
2052 are enabled, the new library `-ldl' is available for arbitrary run-time
2053 loading of shared objects; its interface is defined in <dlfcn.h>. The
2054 new header file <link.h> gives access to the internals of the run-time
2055 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
2056 application of same name on other systems and it provides information
2057 about dynamically linked binaries.
2059 * The C library now provides the run-time support code for profiling
2060 executables compiled with `-pg'. Programs can control the profiling code
2061 through the interface in <sys/gmon.h>. The `gmon.out' files written by
2062 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
2063 the support for this file format was contributed by David Mosberger-Tang.
2065 * The math code has been replaced with a math library based on fdlibm from
2066 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
2067 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
2068 functions. The math functions now reside in a separate library, so
2069 programs using them will need to use `-lm' their linking commands.
2071 * John C. Bowman contributed optimized ix87 assembler inline functions.
2073 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2074 mechanism similar to that found in Solaris 2. This is now used for the
2075 group, passwd, hosts, networks, services, protocols, rpc, ethers,
2076 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
2077 file controls what services are used for each individual database. This
2078 works by loading shared libraries with names specified in `nsswitch.conf',
2079 so service modules can be changed or added at any time without even
2080 relinking any program. Currently there are the file, db, and NIS based
2081 NSS services available.
2083 * The new functions `strtoq' and `strtouq' parse integer values from
2084 strings, like `strtol' and `strtoul', but they return `long long int' and
2085 `unsigned long long int' values, respectively (64-bit quantities).
2087 * The new functions `strtof' and `strtold' parse floating-point values from
2088 strings, like `strtod', but they return `float' and `long double' values,
2089 respectively (on some machines `double' and `long double' are the same).
2091 * Ulrich Drepper has contributed new implementations of the floating-point
2092 printing and reading code used in the `printf' family of functions and
2093 `strtod', `strtof', and `strtold'. These new functions are perfectly
2094 accurate, and much faster than the old ones.
2096 * The implementation of the POSIX locale model was completely rewritten by
2097 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2098 to compile the POSIX locale definition.
2100 * The former dummy implementations of the strcoll and strxfrm function are
2101 now replaced by fully functional code contributed by Ulrich Drepper. The
2102 collation information comes from the POSIX locale definitions.
2104 * The new header <langinfo.h> defines an interface for accessing
2105 various locale-dependent data (using the locale chosen with `setlocale').
2107 * Ulrich Drepper has contributed a new suite of functions for operation on
2108 wide-character and multibyte-character strings, in <wchar.h>;
2109 and classification and case conversion of wide characters, in <wctype.h>.
2110 These new functions are conforming to the ISO C, Amendement 1 specification.
2112 * There is now a second implementation of the standard I/O library available.
2113 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2114 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2116 * You can now use positional parameter specifications in format strings
2117 for the `printf' and `scanf' families of functions. For example,
2118 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2119 ``Number 6, Mr Jones''. This is mainly useful when providing different
2120 format strings for different languages, whose grammars may dictate
2121 different orderings of the values being printed. To support this
2122 feature, the interface for `register_printf_handler' has changed; see
2123 the header file <printf.h> for details.
2125 * The `printf' and `scanf' families of functions now understand a new
2126 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2127 to group numbers as indicated by the locale; for `scanf' and friends, this
2128 says to accept as valid only a number with all the proper grouping
2129 separators in the right places. In the default "C" locale, numbers are
2130 not grouped; but locales for specific countries will define the usual
2131 conventions (i.e. separate thousands with `,' in the US locale).
2133 * The pgrp functions have been regularized, slightly incompatibly but much
2134 less confusingly. The core functions are now `getpgid' and `setpgid',
2135 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2136 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2137 provided for compatibility. There is no longer an incompatible `getpgrp'
2138 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2140 * The new header file <fts.h> and suite of functions simplify programs that
2141 operate on directory trees. This code comes from 4.4 BSD.
2143 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2144 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2145 NSS scheme used in glibc.
2147 * There is a new malloc debugging hook `__memalign_hook'.
2149 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2150 `unsigned int' in <sys/types.h>. These are for compatibility only and
2151 their use is discouraged.
2153 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2154 done differently, so that it works even without GNU ld.
2156 * New function `euidaccess' checks allowed access to a file like `access',
2157 but using the effective IDs instead of the real IDs.
2159 * The time zone data files have been updated for the latest and greatest
2160 local time conventions of the countries of the world.
2162 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2165 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2166 for formatting floating-point numbers. They are provided only for
2167 compatibility; new programs should use `sprintf' instead. There are
2168 also equivalent function for the `long double' floating-point type and
2169 all functions also exist in a reentrant form.
2171 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2172 functions for maintaining the login-record files (primarily of use to
2173 system programs such as `login'), and convenient functions for
2174 allocating and initializing a pseudo-terminal (pty) device.
2176 * Ulrich Drepper has contributed new support for System V style
2177 shared memory and IPC on systems that support it.
2179 * Ulrich Drepper has contributed several miscellaneous new functions found
2180 in System V: The `hsearch' family of functions provide an effective
2181 implementation of hash tables; `a64l' and `l64a' provide a very simple
2182 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2185 * Ulrich Drepper has contributed new reentrant counterparts for the
2186 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2188 * Ulrich Drepper has contributed new, highly-optimized versions of several
2189 string functions for the i486/Pentium family of processors.
2191 * Ulrich Drepper has updated the Linux-specific code, based largely
2192 on work done in Hongjiu Lu's version of GNU libc for Linux.
2193 The GNU library now supports Linux versions 2.0.10 and later,
2194 using the ELF object file format (i[3456]86-*-linux).
2196 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2198 * David Mosberger-Tang and Richard Henderson have ported the C library
2199 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2200 dynamic linking support for ELF/Alpha.
2202 * Richard Henderson contributed several Alpha optimized assembler function
2203 for arithmetic and string handling.
2205 * Ulrich Drepper has contributed a new set of message catalog functions to
2206 support multiple languages using the <libintl.h> interface, for use with
2207 his new package GNU gettext. Translation volunteers have contributed
2208 catalogs of the library's messages in Spanish, German, and Korean.
2210 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2211 program and the `catgets' function for reading the catalog files it
2212 creates. (The <libintl.h> interface is preferred; we include the
2213 <nl_types.h> interface using `catgets' only for source compatibility with
2214 programs already written to use it.)
2216 * New header file <values.h> gives SVID-compatible names for <limits.h>
2219 * Various new macros, declarations, and small header files for compatibility
2222 * New function `group_member' is a convenient way to check if a process has
2223 a given effective group ID.
2225 * When using GCC 2.7 and later, the socket functions are now declared in a
2226 special way so that passing an argument of type `struct sockaddr_in *',
2227 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2228 `struct sockaddr *' type, does not generate a type-clash warning.
2230 * New function `error' declared in header file <error.h> is a convenient
2231 function for printing error messages and optionally exiting; this is the
2232 canonical function used in GNU programs. The new functions `err', `warn',
2233 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2234 doing the same thing.
2236 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2237 POSIX.2 `glob' function to do ~ and {...} expansion.
2239 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2240 `clearenv' which is used in POSIX.9 is also available.
2242 * New function `getsid' returns session ID number on systems that support it.
2244 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2245 files <db.h> and <mpool.h> provide a rich set of functions for several
2246 types of simple databases stored in memory and in files, and <ndbm.h> is
2247 an old `ndbm'-compatible interface using the `db' functions. Link with
2248 `-ldb' to get these functions.
2250 * New macro `strdupa' copies a string like `strdup', but uses local stack
2251 space from `alloca' instead of dynamic heap space from `malloc'.
2253 * New function `strnlen' is like `strlen' but searches only a given maximum
2254 number of characters for the null terminator. `stpncpy', `strndup' and
2255 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2258 * New function `statfs' in header <sys/statfs.h>.
2260 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2261 provide convenient functions for operating on blocks of null-terminated
2264 * A new suite of functions in <utmp.h> handle all the details of reading
2265 and writing the utmp file.
2267 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2270 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2271 completely POSIX compliant and also implemented the extended functionality
2272 to handle alternate digit representation and alternate era date formats.
2274 * Ulrich Drepper provided an implementation of the `strptime' function
2275 defined in XPG4.2 which transforms a string into a `struct tm' value.
2277 * Paul Eggert provided the tzselect shell script as part of the timezone
2278 code. The shell script makes it easy to select the correct timezone
2281 * The implementation of the malloc family of functions is completely replaced
2282 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2283 The implementation uses the mmap function (if available) and it is
2284 optimized for the use in multi threaded programs.
2286 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2287 functions. This new functionality is usable by specifying a special
2288 salt string and it is compatible with implementation on *BSD systems.
2290 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2291 `getsubopt' to handle second level command line options, `bsd_signal'
2292 to access BSD style `signal' functionality, the obsolete `regexp' style
2295 * the `lchown' function is available on system which support this
2298 * The implementation of the shadow password handling function was contributed
2301 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2303 * POSIX.1g support was added. The <sys/select.h> header is available,
2304 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2305 implementation of `getaddrinfo'.
2309 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2311 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2312 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2314 * The new function `daemon' from 4.4 BSD is useful for server programs that
2315 want to put themselves in the background.
2317 * Joel Sherrill has contributed support for several standalone boards that
2318 run without an operating system.
2320 * `printf', `scanf' and friends now accept a `q' type modifier for long
2321 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2323 * All of the code taken from BSD (notably most of the math and networking
2324 routines) has been updated from the BSD 4.4-Lite release.
2326 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2328 * The new functions `getdomainname' and `setdomainname' fetch or change the
2329 YP/NIS domain name. These are system calls which exist on systems which
2332 * The time zone data files have been updated for the latest international
2335 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2336 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2340 * The C library now includes support for Sun RPC, from Sun's free
2341 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2342 are included. (There is still no support for YP.)
2344 * Tom Quinn has contributed a port of the C library to SGI machines running
2345 Irix 4 (mips-sgi-irix4).
2347 * The new `lockf' function is a simplified interface to the locking
2348 facilities of `fcntl', included for compatibility.
2350 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2352 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2354 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2357 * The error message printed by `assert' for a failed assertion now includes
2358 the name of the program (if using GNU ld) and the name of the calling
2359 function (with versions of GCC that support this).
2361 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2363 * The library now includes the <sys/mman.h> header file and memory
2364 management functions `mmap', `munmap', `mprotect', `msync', and
2365 `madvise', on systems that support those facilities.
2367 * The interface for `mcheck' has changed slightly: the function called to
2368 abort the program when an allocation inconsistency is detected now takes
2369 an argument that indicates the type of failure. The new function
2370 `mprobe' lets you request a consistency check for a particular block at
2371 any time (checks are normally done only when you call `free' or `realloc'
2374 * It is now possible to easily cross-compile the C library, building on one
2375 system a library to run on another machine and/or operating system. All
2376 you need to do is set the variable `HOST_CC' in `configparms' to the
2377 native compiler for programs to run on the machine you are building on (a
2378 few generator programs are used on Unix systems); set `CC' to the
2381 * The new function `fexecve' (only implemented on the GNU system) executes
2382 a program file given a file descriptor already open on the file.
2386 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2387 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2389 * You can set the variable `libprefix' in `configparms' to specify a prefix
2390 to be prepended to installed library files; this makes it easy to install
2391 the GNU C library to be linked as `-lgnuc' or whatever.
2393 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2394 copies a limited number of characters from a string, and returns the
2395 address of the last character written.
2397 * You no longer need to check for whether the installed `stddef.h' is
2398 compatible with the GNU C library. configure now checks for you.
2400 * You can now define a per-stream `fileno' function to convert the
2401 stream's cookie into an integral file descriptor.
2403 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2404 allocates zero bytes of storage, and returns a unique pointer which
2405 you can pass to `realloc' or `free'. The behavior is undefined if
2406 you dereference this pointer.
2408 * The C library now runs on Sony NEWS m68k machines running either
2409 NewsOS 3 or NewsOS 4.
2411 * The new `syscall' function is a system-dependent primitive function
2412 for invoking system calls. It has the canonical behavior on Unix
2413 systems, including unreliable return values for some calls (such as
2414 `pipe', `fork' and `getppid').
2416 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2417 to `EAGAIN', which is the preferred name. On systems whose kernels
2418 use two distinct codes, the C library now translates EWOULDBLOCK to
2419 EAGAIN in every system call function.
2423 * The GNU C Library Reference Manual is now distributed with the library.
2424 `make dvi' will produce a DVI file of the printed manual.
2425 `make info' will produce Info files that you can read on line using C-h i
2426 in Emacs or the `info' program.
2427 Please send comments on the manual to bug-glibc-manual@gnu.org.
2429 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2431 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2433 * Jason Merrill has contributed a port to the Sequent Symmetry running
2434 Dynix version 3 (i386-sequent-dynix).
2436 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2437 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2439 * New function `memory_warnings' lets you arrange to get warnings when
2440 malloc is running out of memory to allocate, like Emacs gives you.
2442 * The C library now contains the relocating allocator used in Emacs 19 for
2443 its editing buffers. This allocator (ralloc) minimizes allocation
2444 overhead and fragmentation by moving allocated regions around whenever it
2445 needs to. You always refer to a ralloc'd region with a "handle" (a
2446 pointer to a pointer--an object of type `void **').
2448 * There is a new `printf' format: `%m' gives you the string corresponding
2449 to the error code in `errno'.
2451 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2452 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2453 pass, the `a' modifier says to fill in a `char **' you pass with a
2456 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2457 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2458 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2460 * `mkstemp' is a traditional Unix function to atomically create and open a
2461 uniquely-named temporary file.
2465 * The standard location for the file that says what the local timezone is
2466 has changed again. It is now `/usr/local/etc/localtime' (or more
2467 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2469 * The distribution no longer contains any files with names longer than 14
2472 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2473 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2475 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2479 * The configuration process has changed quite a bit. The `configure'
2480 script is now used just like the configuration scripts for other GNU
2481 packages. The `sysdeps' directory hierarchy is much rearranged.
2482 The file `INSTALL' explains the new scheme in detail.
2484 * The header files no longer need to be processed into ANSI C and
2485 traditional C versions. There is just one set of files to install, and
2486 it will work with ANSI or old C compilers (including `gcc -traditional').
2488 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2489 MIPS DECStation running Ultrix 4.
2491 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2492 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2493 made itself into a shared library.
2495 * Yet further improved support for the i386, running 4.3 BSD-like systems
2496 (such as Mach 3 with the Unix single-server), or System V.
2498 * New function `strncasecmp' to do case-insensitive string comparison
2499 with limited length.
2501 * New function `strsep' is a reentrant alternative to `strtok'.
2503 * New functions `scandir' and `alphasort' for searching directories.
2505 * New function `setenv' is a better interface to `putenv'.
2507 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2508 function for traversing a directory tree.
2510 * The GNU obstack package is now also part of the C library.
2511 The new function `open_obstack_stream' creates a stdio stream that
2512 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2513 formatted output directly to an obstack.
2515 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2516 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2518 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2520 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2521 things to your strings.
2523 * There are some new test programs: test-fseek, testmb, and testrand.
2525 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2526 These ports are not finished, but are a good starting place for really
2527 supporting those systems.
2529 * `/etc/localtime' is now the standard location for the file that says what
2530 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2531 This follows the general principle that `/etc' is the place for all local
2532 configuration files.
2534 * The C library header files now use `extern "C"' when used by the C++
2535 compiler, so the C library should now work with C++ code.
2537 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2538 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2541 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2542 function which uses the `merge sort' algorithm, and is said to be
2543 significantly faster than the old GNU `qsort' function. Merge sort is
2544 now the standard `qsort' function. The new algorithm can require a lot
2545 of temporary storage; so, the old sorting function is called when the
2546 required storage is not available.
2548 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2549 provides the Unix `crypt' function, plus some other entry points.
2551 * The code and header files taken from 4.4 BSD have been updated with the
2552 latest files released from Berkeley.
2554 ----------------------------------------------------------------------
2555 Copyright information:
2557 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2559 Permission is granted to anyone to make or distribute verbatim copies
2560 of this document as received, in any medium, provided that the
2561 copyright notice and this permission notice are preserved,
2562 thus giving the recipient permission to redistribute in turn.
2564 Permission is granted to distribute modified versions
2565 of this document, or of portions of it,
2566 under the above conditions, provided also that they
2567 carry prominent notices stating who last changed them.
2570 version-control: never
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