1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2015 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, 16191, 16469, 16617, 16619, 16657, 16740, 16857, 17192, 17266,
14 17273, 17344, 17363, 17370, 17371, 17411, 17460, 17475, 17485, 17501,
15 17506, 17508, 17522, 17555, 17570, 17571, 17572, 17573, 17574, 17581,
16 17582, 17583, 17584, 17585, 17589, 17594, 17601, 17608, 17616, 17625,
17 17630, 17633, 17634, 17635, 17647, 17653, 17657, 17658, 17664, 17665,
18 17668, 17682, 17717, 17719, 17722, 17723, 17724, 17725, 17732, 17733,
19 17744, 17745, 17746, 17747, 17748, 17775, 17777, 17780, 17781, 17782,
20 17793, 17796, 17797, 17806
22 * Optimized strcpy, stpcpy, strchrnul and strrchr implementations for
23 AArch64. Contributed by ARM Ltd.
25 * i386 memcpy functions optimized with SSE2 unaligned load/store.
27 * CVE-2104-7817 The wordexp function could ignore the WRDE_NOCMD flag
28 under certain input conditions resulting in the execution of a shell for
29 command substitution when the applicaiton did not request it. The
30 implementation now checks WRDE_NOCMD immediately before executing the
31 shell and returns the error WRDE_CMDSUB as expected.
33 * CVE-2012-3406 printf-style functions could run into a stack overflow when
34 processing format strings with a large number of format specifiers.
36 * CVE-2014-9402 The nss_dns implementation of getnetbyname could run into an
37 infinite loop if the DNS response contained a PTR record of an unexpected
40 * The minimum GCC version that can be used to build this version of the GNU
41 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
42 still be used to compile programs using the GNU C Library.
44 * The GNU C Library is now built with -Werror by default. This can be
45 disabled by configuring with --disable-werror.
47 * New locales: tu_IN, bh_IN, raj_IN, ce_RU.
49 * The obsolete sigvec function has been removed. This was the original
50 4.2BSD interface that inspired the POSIX.1 sigaction interface, which
51 programs have been using instead for about 25 years. Of course, ABI
52 compatibility for old binaries using sigvec remains intact.
54 * Merged gettext 0.19.3 into the intl subdirectory. This fixes building
55 with newer versions of bison.
57 * Support for MIPS o32 FPXX, FP64A and FP64 ABI Extensions.
58 The original MIPS o32 hard-float ABI requires an FPU where double-precision
59 registers overlay two consecutive single-precision registers. MIPS32R2
60 introduced a new FPU mode (FR=1) where double-precision registers extend the
61 corresponding single-precision registers which is incompatible with the
62 o32 hard-float ABI. The MIPS SIMD ASE and the MIPSR6 architecture both
63 require the use of FR=1 making a transition necessary. New o32 ABI
64 extensions enable users to migrate over time from the original o32 ABI
65 through to the updated o32 FP64 ABI. To achieve this the dynamic linker now
66 tracks the ABI of any loaded object and verifies that new objects are
67 compatible. Mode transitions will also be requested as required and
68 unsupportable objects will be rejected. The ABI checks include both soft and
69 hard float ABIs for o32, n32 and n64.
71 GCC 5 with GNU binutils 2.25 onwards:
72 It is strongly recommended that all o32 system libraries are built using the
73 new o32 FPXX ABI (-mfpxx) to facilitate the transition as this is compatible
74 with the original and all new o32 ABI extensions. Configure a MIPS GCC
75 compiler using --with-fp-32=xx to set this by default.
79 * The following bugs are resolved with this release:
81 6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347, 15514,
82 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198, 16275,
83 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447, 16516,
84 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600, 16609,
85 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639, 16642,
86 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689, 16695,
87 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739, 16740,
88 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791, 16796,
89 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849, 16854,
90 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912, 16915,
91 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958, 16965,
92 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022, 17031,
93 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078, 17079,
94 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150, 17153,
95 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
97 * Reverted change of ABI data structures for s390 and s390x:
98 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
99 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
100 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
101 are preserved pointing straight to the same implementation as the old ones.
102 Given that, new callers will simply provide a too-big buffer to these
103 functions. Any applications/libraries out there that embed jmp_buf or
104 ucontext_t in an ABI-relevant data structure that have already been rebuilt
105 against 2.19 headers will have to rebuilt again. This is necessary in any
106 case to revert the breakage in their ABI caused by the glibc change.
108 * Support for file description locks is added to systems running the
109 Linux kernel. The standard file locking interfaces are extended to
110 operate on file descriptions, not file descriptors, via the use of
111 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
112 are associated with an open file instead of a process.
114 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
116 * The minimum Linux kernel version that this version of the GNU C Library
117 can be used with is 2.6.32.
119 * Running the testsuite no longer terminates as soon as a test fails.
120 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
121 with PASS or FAIL lines for individual tests. A summary of the results is
122 printed, including a list of failing lists, and "make check" exits with
123 error status if there were any unexpected failures. "make check
124 stop-on-test-failure=y" may be used to keep the old behavior.
126 * The am33 port, which had not worked for several years, has been removed
129 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
130 supported; they now act the same as _DEFAULT_SOURCE (but generate a
131 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
132 conflicted with POSIX (support for which was removed in 2.19), the
133 interfaces those macros enabled remain available when compiling with
134 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
137 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
139 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
140 This may improve lock scaling of existing programs on TX capable systems.
141 The lock elision code is only built with --enable-lock-elision=yes and
142 then requires a GCC version supporting the TX builtins. With lock elision
143 default mutexes are elided via __builtin_tbegin, if the cpu supports
144 transactions. By default lock elision is not enabled and the elision code
147 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
148 copy the path argument. This allowed programs to cause posix_spawn to
149 deference a dangling pointer, or use an unexpected pathname argument if
150 the string was modified after the posix_spawn_file_actions_addopen
153 * All supported architectures now use the main glibc sysdeps directory
154 instead of some being in a separate "ports" directory (which was
155 distributed separately before glibc 2.17).
157 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
158 On configurations that support it (all Linux configurations), it's now
159 used regardless of the --enable-add-ons switch to configure. It is no
160 longer possible to build such configurations without pthreads support.
162 * Locale names, including those obtained from environment variables (LANG
163 and the LC_* variables), are more tightly checked for proper syntax.
164 setlocale will now fail (with EINVAL) for locale names that are overly
165 long, contain slashes without starting with a slash, or contain ".." path
166 components. (CVE-2014-0475) Previously, some valid locale names were
167 silently replaced with the "C" locale when running in AT_SECURE mode
168 (e.g., in a SUID program). This is no longer necessary because of the
171 * On x86-64, the dynamic linker's lazy-binding support is now compatible
172 with application code using Intel MPX instructions. (With all previous
173 versions, the MPX register state could be clobbered when making calls
174 into or out of a shared library.) Note that while the new dynamic
175 linker is compatible with all known x86 hardware whether or not it
176 supports Intel MPX, some x86 instruction-set emulators might fail to
177 handle the new instruction encodings. This is known to affect Valgrind
178 versions up through 3.9 (but will be fixed in the forthcoming 3.10
179 release), and might affect other tools that do instruction emulation.
181 * Support for loadable gconv transliteration modules has been removed.
182 The support for transliteration modules has been non-functional for
183 over a decade, and the removal is prompted by security defects. The
184 normal gconv conversion modules are still supported. Transliteration
185 with //TRANSLIT is still possible, and the //IGNORE specifier
186 continues to be supported. (CVE-2014-5119)
188 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
189 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
190 resulting a denial-of-service security vulnerability in applications which
191 use functions related to iconv. (CVE-2014-6040)
195 * The following bugs are resolved with this release:
197 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
198 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
199 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
200 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
201 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
202 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
203 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
204 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
205 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
206 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
207 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
208 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
209 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
210 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
211 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
212 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
213 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
214 16431, 16453, 16474, 16506, 16510, 16529
216 * Slovenian translations for glibc messages have been contributed by the
217 Translation Project's Slovenian team of translators.
219 * The public headers no longer use __unused nor __block. This change is to
220 support compiling programs that are derived from BSD sources and use
221 __unused internally, and to support compiling with Clang's -fblock
222 extension which uses __block.
224 * CVE-2012-4412 The strcoll implementation caches indices and rules for
225 large collation sequences to optimize multiple passes. This cache
226 computation may overflow for large collation sequences and may cause a
227 stack or buffer overflow. This is now fixed to use a slower algorithm
228 which does not use a cache if there is an integer overflow.
230 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
231 rules for large collation sequences to optimize multiple passes and falls
232 back to alloca if malloc fails, resulting in a possible stack overflow.
233 The implementation now falls back to an uncached collation sequence lookup
236 * CVE-2013-4788 The pointer guard used for pointer mangling was not
237 initialized for static applications resulting in the security feature
238 being disabled. The pointer guard is now correctly initialized to a
239 random value for static applications. Existing static applications need
240 to be recompiled to take advantage of the fix (bug 15754).
242 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
243 to the d_name member of struct dirent, or omit the terminating NUL
244 character. (Bugzilla #14699).
246 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
247 aligned_alloc functions could allocate too few bytes or corrupt the
248 heap when passed very large allocation size values (Bugzilla #15855,
251 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
252 for AF_INET6 has been fixed (Bugzilla #16072).
254 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
255 pap_CW, quz_PE, the_NP.
257 * Substantially revised locales: gd_GB, ht_HT
259 * The LC_ADDRESS field was updated to support country_car for almost all
262 * ISO 1427 definitions were updated.
264 * ISO 3166 definitions were updated.
266 * The localedef utility now supports --big-endian and --little-endian
267 command-line options to generate locales for a different system from that
268 for which the C library was built.
270 * Binary locale files now only depend on the endianness of the system for
271 which they are generated and not on other properties of that system. As a
272 consequence, binary files generated with new localedef may be incompatible
273 with old versions of the GNU C Library, and binary files generated with
274 old localedef may be incompatible with this version of the GNU C Library,
275 in the following circumstances:
277 + Locale files may be incompatible on m68k systems.
279 + Locale archive files (but not separate files for individual locales) may
280 be incompatible on systems where plain "char" is signed.
282 * The configure option --disable-versioning has been removed. Builds with
283 --disable-versioning had not worked for several years.
285 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
286 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
288 * SystemTap probes for malloc have been introduced.
290 * SystemTap probes for slow multiple precision fallback paths of
291 transcendental functions have been introduced.
293 * Support for powerpc64le has been added.
295 * The soft-float powerpc port now supports e500 processors.
297 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
299 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
300 set of header declarations that are enabled by default, even when other
301 feature test macros or compiler options such as -std=c99 would otherwise
302 disable some of those declarations.
304 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
305 conflict with POSIX. The libbsd-compat library (which was a dummy library
306 that did nothing) has also been removed.
308 * Preliminary documentation about Multi-Thread, Async-Signal and
309 Async-Cancel Safety has been added.
311 * Change of ABI data structures for s390 and s390x:
312 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
313 allow for future hardware extensions. All library functions that accept or
314 return these structures were versioned in order to provide backwards
315 compatibility with existing code. However, not all cases can be handled
316 with interface versioning. If an application embeds either structure into
317 another structure and that structure is passed to another compilation unit
318 which expects the newer larger-sized object then any access to the new
319 fields will result in undefined behaviour. Similarly any access to fields
320 that were moved by the enlarging of the structures will cause undefined
321 behaviour. To fix the undefined behaviour all objects that are part of the
322 final in-memory image must agree on the size of structures, and this may
323 require recompilation.
327 * The following bugs are resolved with this release:
329 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
330 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
331 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
332 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
333 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
334 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
335 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
336 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
337 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
338 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
339 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
340 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
341 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
344 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
345 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
346 Distributions can re-enable building and using pt_chown via the new configure
347 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
348 considerable security risks and should only be used if the distribution
349 understands and accepts the risks.
351 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
354 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
355 fixed (Bugzilla #15330).
357 * Add support for calling C++11 thread_local object destructors on thread
358 and program exit. This needs compiler support for offloading C++11
359 destructor calls to glibc.
361 * Improved worst case performance of libm functions with double inputs and
364 * Support for priority inherited mutexes in pthread condition variables on
365 non-x86 architectures.
367 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
369 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
371 * Optimized string functions for ARM. Implemented by Will Newton and
374 * Optimized libm functions for SPARC. Implemented by David S. Miller.
376 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
379 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
380 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
382 * Added a benchmark framework to track performance of functions in glibc.
384 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
385 It is based on draft TS 18661 and currently enabled as a GNU extension.
387 * On Linux, the clock function now uses the clock_gettime system call
388 for improved precision, rather than old times system call.
390 * Added support for version-3 tz format files. This is needed when using
391 the tz database release 2013e or later, and affects a few unusual cases --
392 currently only TZ='America/Godthab' for time stamps after 2037.
394 * Added new API functions pthread_getattr_default_np and
395 pthread_setattr_default_np to get and set the default pthread
396 attributes of a process.
398 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
399 This may improve lock scaling of existing programs on TSX capable systems.
400 When the --enable-lock-elision=yes parameter is specified at configure
401 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
404 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
405 availability). Implemented by Ryan S. Arnold.
407 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
411 * The following bugs are resolved with this release:
413 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
414 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
415 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
416 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
417 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
418 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
419 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
420 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
421 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
422 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
423 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
424 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
425 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
426 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
427 14879, 14889, 14893, 14898, 14914.
429 * Optimization of memcpy for MIPS.
431 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
432 EMFILE has been fixed (Bugzilla #14889).
434 * The add-on ports collection is now distributed in the "ports" subdirectory
435 of the main GNU C Library distribution, rather than separately.
437 * Port to ARM AArch64 contributed by Linaro.
439 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
440 Optimized versions of memcpy, memset, and memcmp added for System z10 and
442 Implemented by Andreas Krebbel.
444 * The new function secure_getenv allows secure access to the environment,
445 returning NULL if running in a SUID/SGID process. This function replaces
446 the internal function __secure_getenv.
448 * SystemTap static probes have been added into the dynamic linker.
449 Implemented by Gary Benson.
451 * Optimizations of string functions strstr, strcasestr and memmem.
452 Implemented by Maxim Kuvyrkov.
454 * The minimum Linux kernel version that this version of the GNU C Library
455 can be used with is 2.6.16.
457 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
458 powerpc POWER7. Implemented by Will Schmidt.
460 * New configure option --disable-nscd builds the C library such that it
461 never attempts to contact the Name Service Caching Daemon (nscd).
462 New configure option --disable-build-nscd avoids building nscd itself;
463 this is the default if --disable-nscd is used.
465 * Improved support for cross-compilation, including cross-testing and
466 bootstrap builds without a previously built glibc.
468 * Several testsuite tests are now able to test multiple IFUNC variants of an
469 interface, rather than just testing the one that would be chooen by
472 * New configure options --with-bugurl and --with-pkgversion, for
473 distributors to use to embed their bug-reporting and package version
474 information in --help and --version output.
476 * The ttyname and ttyname_r functions on Linux now fall back to searching for
477 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
478 allows creation of chroots without the procfs mounted on /proc.
480 * The `crypt' function now fails if passed salt bytes that violate the
481 specification for those values. On Linux, the `crypt' function will
482 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
483 enabled, and fail on encrypted strings using the MD5 or DES algorithm
484 when the mode is enabled.
486 * The `clock_*' suite of functions (declared in <time.h>) is now available
487 directly in the main C library. Previously it was necessary to link with
488 -lrt to use these functions. This change has the effect that a
489 single-threaded program that uses a function such as `clock_gettime' (and
490 is not linked with -lrt) will no longer implicitly load the pthreads
491 library at runtime and so will not suffer the overheads associated with
492 multi-thread support in other code such as the C++ runtime library.
494 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
499 * The following bugs are resolved with this release:
501 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
502 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
503 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
504 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
505 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
506 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
507 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
508 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
509 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
510 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
511 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
512 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
513 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
514 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
515 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
516 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
517 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
518 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
519 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
520 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
521 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
522 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
525 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
526 configuring glibc with:
527 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
528 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
529 Implemented by H.J. Lu.
533 + define static_assert
535 + do not declare gets
537 + declare at_quick_exit and quick_exit also for ISO C11
539 + aligned_alloc. NB: The code is deliberately allows the size parameter
540 to not be a multiple of the alignment. This is a moronic requirement
541 in the standard but it is only a requirement on the caller, not the
546 + uchar.h support added
548 + CMPLX, CMPLXF, CMPLXL added
550 Implemented by Ulrich Drepper.
552 * Support for the IA-64 has been moved to ports.
554 * Remove support for anything but ELF binary format
556 * Checking versions of poll, ppoll added.
557 Implemented by Ulrich Drepper.
559 * More generic and 64-bit performance optimizations to math functions.
560 Implemented by Ulrich Drepper.
562 * New configure option --enable-obsolete-rpc makes the deprecated RPC
563 headers and functions available at compile time as they were before
564 version 2.14. This option will be removed at some time in the future
565 after the TI-RPC library becomes fully sufficient for the needs of
566 existing applications.
568 * Compatibility code for Linux kernel versions before 2.4 has been removed.
569 Note that glibc is not expected to work with any Linux kernel version
572 * New header <sys/auxv.h> and function getauxval allowing easy access to
573 the AT_* key-value pairs passed from the Linux kernel. The header also
574 defines the HWCAP_* bits associated with the AT_HWCAP key.
576 * New locales: mag_IN
578 * New configure option --enable-systemtap builds SystemTap static probes
579 into libc for setjmp and longjmp and into libpthread for various operations.
580 So far the setjmp/longjmp probes and some of the libpthread probes are
581 provided only for i*86 and x86_64.
582 Implemented by Roland McGrath and Rayson Ho.
584 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
586 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
589 * More optimized functions for SPARC. Implemented by David S. Miller.
591 * Improved support for cross-compilation, especially bootstrap builds
592 without a previously built glibc.
594 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
595 Chris Metcalf from Tilera.
597 * Support for the old ARM ABI has been removed from ports. Only the EABI is
598 now supported for ARM processors.
600 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
601 as the name of the dynamic linker, to distinguish it from the
602 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
604 * Support for CRIS has been removed from ports.
606 * A new class of installed header has been documented for low-level
607 platform-specific functionality. PowerPC added the first instance with a
608 function to provide time base register access. Contributed by Tulio
609 Magno Quites Machado Filho.
611 * ix86 configurations now install header files that are consistent with
612 what x86-64 configurations install. These same header files can be used
613 for -m32, -m64, or -mx32 builds.
614 Contributed by H.J. Lu.
616 * Math library bug fixes. A thorough audit of all open math library bugs was
617 conducted by Joseph Myers. Significant progress was made on many math
618 library bugs resulting in more accurate exceptions and function results.
619 Many thanks to all those that contributed including Andreas Jaeger for his
620 patch review and work on the x87 trigonometric instruction issues.
622 * Timezone data is no longer installed. Timezone-related binaries and scripts
623 will continue to be installed. Users should obtain their timezone data from
624 their distribution provider or from the tzdata package at
625 <ftp://munnari.oz.au/pub/>.
629 * The following bugs are resolved with this release:
631 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
632 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
633 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
634 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
635 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
636 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
637 13484, 13506, 13515, 13523, 13524, 13538, 13540
639 * New program pldd to list loaded object of a process
640 Implemented by Ulrich Drepper.
642 * Add nss_db support back to glibc. No more dependency on Berkeley db
643 and support for initgroups lookups.
644 Implemented by Ulrich Drepper.
646 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
647 Contributed by HJ Lu.
649 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
650 Contributed by HJ Lu.
652 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
653 on x86-32 and x86-64.
654 Contributed by Liubov Dmitrieva.
656 * Optimized strchr and strrchr for SSE on x86-32.
657 Contributed by Liubov Dmitrieva.
659 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
660 for x86-64 and x86-32.
661 Contributed by Liubov Dmitrieva.
663 * New interfaces: scandirat, scandirat64
664 Implemented by Ulrich Drepper.
666 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
667 Implemented by Ulrich Drepper.
669 * nscd now also caches the netgroup database.
670 Implemented by Ulrich Drepper.
672 * Integrate libm with gcc's -ffinite-math-only option.
673 Implemented by Ulrich Drepper.
675 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
676 to math functions. Implemented by Ulrich Drepper.
678 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
679 Implemented by Ulrich Drepper.
681 * New Linux interfaces: process_vm_readv, process_vm_writev
683 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
684 Implemented by Ulrich Drepper.
686 * Optimized nearbyint and strcasecmp for PPC.
687 Implemented by Adhemerval Zanella.
689 * New locales: bho_IN, unm_US, es_CU, ta_LK
693 * The following bugs are resolved with this release:
695 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
696 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
697 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
698 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
699 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
700 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
701 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
702 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
703 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
704 12795, 12811, 12813, 12814, 12841
706 * The RPC implementation in libc is obsoleted. Old programs keep working
707 but new programs cannot be linked with the routines in libc anymore.
708 Programs in need of RPC functionality must be linked against TI-RPC.
709 The TI-RPC implementation is IPv6 enabled and there are other benefits.
711 Visible changes of this change include (obviously) the inability to link
712 programs using RPC functions without referencing the TI-RPC library and the
713 removal of the RPC headers from the glibc headers.
714 Implemented by Ulrich Drepper.
716 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
717 syncfs, setns, sendmmsg
719 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
720 yue_HK, lij_IT, mhr_RU
722 * New encodings: CP770, CP771, CP772, CP773, CP774
724 * New program sotruss to trace calls through PLTs
725 Implemented by Ulrich Drepper.
727 * The malloc hook implementation is marked deprecated and will be removed
728 from the default implementation in the next version. The design never
729 worked ever since the introduction of threads. Even programs which do
730 not create threads themselves can use multiple threads created internally.
734 * The following bugs are resolved with this release:
736 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
737 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
738 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
739 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
742 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
744 * POWER7 optimizations: memset, memcmp, strncmp
746 * New optimized string functions for x86-64: strnlen (SSE2),
747 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
748 Implemented by Ulrich Drepper.
752 * The following bugs are resolved with this release:
754 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
755 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
756 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
757 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
758 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
759 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
760 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
761 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
763 * New interfaces: pthread_getname_np, pthread_setname_np
765 * New Linux interface: recvmmsg
767 * STT_GNU_IFUNC implemented for Sparc by David Miller.
769 * The dynamic linker now recognizes supported ABI versions from the
770 EI_ABIVERSION field in the ELF header.
771 Implemented by Ulrich Drepper.
773 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
774 will not be used to fill in password fields in the passwd.byname replies.
775 Instead it is used to synthesize the shadow.byname table, should it be
776 missing. This is a useful mode in some installations involving Solaris.
777 Implemented by Ulrich Drepper.
779 * New locales: kok_IN, sq_MK, cv_RU
783 * The following bugs are resolved with this release:
785 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
786 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
787 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
788 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
789 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
790 10789, 10817, 10823, 10840, 10847
792 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
794 Implemented by Ulrich Drepper.
796 * Checking version of longjmp added that fails if an uninitialized stack
797 frame would be created. Implemented by Ulrich Drepper.
799 * STT_GNU_IFUNC is now supported in static executables.
800 Implemented by H.J. Lu.
802 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
804 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
805 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
806 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
807 Contributed by H.J. Lu.
809 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
810 Implemented by Ulrich Drepper.
812 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
814 Contributed by H.J. Lu.
816 * Support for fma instruction in AVX on x86-64.
817 Implemented by H.J. Lu and Ulrich Drepper.
819 * AVX support in x86-64 auditing support in ld.so.
820 Implemented by H.J. Lu.
822 * STB_GNU_UNIQUE support added.
823 Implemented by Ulrich Drepper.
825 * Implement second fallback mode for optimized DNS lookup for even more
826 broken environments. If two requests from the same port are not
827 handled correctly close the socket and open a new one before sending
828 the second request. The 'single-request-reopen' option in /etc/resolv.conf
829 can be used to select this mode right away, instead of rediscovering the
830 necessity is every process again.
831 Implemented by Ulrich Drepper.
833 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
834 Implemented by Adam Tkac.
836 * Optimized iconv conversions for S390x.
837 Implemented by Andreas Krebbel.
839 * Using condvars with PI mutexes is now more efficient due to kernel
840 support for requeueing to PI futexes. NPTL support added for x86-64.
841 Implemented by Ulrich Drepper.
843 * New locales: ps_AF, my_MM
847 * The following bugs are resolved with this release:
849 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
850 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
851 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
852 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
853 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
855 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
856 Implemented by Ulrich Drepper.
858 * New Linux interfaces: accept4, fallocate, fallocate64.
859 Implemented by Ulrich Drepper.
861 * Correct declarations of string function when used in C++ code. This
862 could lead to compile errors for invalid C++ code.
864 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
867 * New POSIX 2008 interface: psiginfo
868 Implemented by Ulrich Drepper.
870 * New ISO C++1x interfaces: quick_exit, at_quick_exit
871 Implemented by Ulrich Drepper.
873 * Support for selecting between multiple function definitions at runtime
874 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
876 * The libcrypt library can now use the hash function implementations in
877 NSS. Implemented by Ulrich Drepper.
879 * The malloc implementation can be compiled to be less memory efficient
880 but higher performing in multi-threaded programs.
881 Implemented by Ulrich Drepper.
883 * New locales: nan_TW@latin, ks_IN
885 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
886 Implemented by Ulrich Drepper.
888 * Extended printf hook support. It is possible to use user-defined types
889 and extend existing format specifiers.
890 Implemented by Ulrich Drepper.
892 * Handling for group shadow files has been added.
893 Implemented by Ulrich Drepper.
895 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
896 servers (the case, e.g., for some people using the built-in DNS
897 server in ADSL modems/routers). There is a once-per-process timeout
898 in case of a broken server. To avoid it, users can run nscd or put
899 'options single-request' in /etc/resolv.conf.
900 Implemented by Ulrich Drepper.
904 * The following bugs are resolved with this release:
906 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
907 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
908 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
909 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
910 6968, 6974, 6980, 6995, 7008, 7009, 7029
912 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
913 up at the same time. Implemented by Ulrich Drepper.
915 * TLS descriptors for LD and GD on x86 and x86-64.
916 Implemented by Alexandre Oliva.
918 * getaddrinfo now handles DCCP and UDPlite.
919 Implemented by Ulrich Drepper.
921 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
922 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
923 Implemented by Ulrich Drepper.
925 * New implementation of memmem, strstr, and strcasestr which is O(n).
926 Implemented by Eric Blake.
928 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
930 * Implement "e" option for popen to open file descriptor with the
931 close-on-exec flag set. Implemented by Ulrich Drepper.
933 * Implement "b" mode for fmemopen. In this mode writes writes don't
934 implicitly add a NUL byte and seeks from the end of the buffer really
935 use the buffer end, not the string length as the basis.
936 Implemented by Ulrich Drepper.
938 * Many functions, exported and internal, now atomically set the close-on-exec
939 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
941 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
943 Implemented by Pravin Satpute.
945 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
949 * The following bugs are resolved with this release:
951 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
952 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
953 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
954 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
955 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
956 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
957 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
959 * New locales: bo_CN, bo_IN, shs_CA.
961 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
963 * Sorting rules for some Indian languages (Devanagari and Gujarati).
964 Implemented by Pravin Satpute.
966 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
968 * nscd caches now all timeouts for DNS entries
969 Implemented by Ulrich Drepper.
971 * nscd is more efficient and wakes up less often.
972 Implemented by Ulrich Drepper.
974 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
975 vdprintf, and obstack_vprintf.
976 Implemented by Jakub Jelinek.
978 * Faster memset for x86-64.
979 Implemented by Harsha Jagasia and H.J. Lu.
981 * Faster memcpy on x86.
982 Implemented by Ulrich Drepper.
984 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
985 Implemented by Ulrich Drepper.
987 * Faster sqrt and sqrtf implemention for some PPC variants.
988 Implemented by Steven Munroe.
992 * The following bugs are resolved with this release:
994 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
995 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
996 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
997 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
998 5071, 5103, 5104, 5112, 5113, 5184, 5186
1000 * More checking functions: fread, fread_unlocked, open*, mq_open.
1001 Implemented by Jakub Jelinek and Ulrich Drepper.
1003 * Extend fortification to C++. Implemented by Jakub Jelinek.
1005 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
1006 by not recognizing 'a' as a modifier when those specs are requested.
1007 Implemented by Jakub Jelinek.
1009 * PPC optimizations to math and string functions.
1010 Implemented by Steven Munroe.
1012 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
1013 options to be passed. Implemented by Ulrich Drepper.
1015 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
1017 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
1018 Implemented by Ulrich Drepper.
1020 * Handle private futexes in the NPTL implementation.
1021 Implemented by Jakub Jelinek and Ulrich Drepper.
1023 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
1024 Implemented by Roland McGrath and Ulrich Drepper.
1026 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
1028 * SHA-256 and SHA-512 based password encryption.
1029 Implemented by Ulrich Drepper.
1031 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
1032 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
1035 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
1036 Implemented by Ulrich Drepper.
1040 * The following bugs are resolved with this release:
1042 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
1043 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
1044 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
1045 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
1046 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
1047 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
1048 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
1051 * New Linux interfaces: epoll_pwait, sched_getcpu.
1053 * New generic interfaces: strerror_l.
1055 * nscd can now cache the services database. Implemented by Ulrich Drepper.
1059 * The following bugs are resolved with this release:
1061 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
1062 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
1063 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
1064 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
1065 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
1066 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
1067 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
1068 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
1069 3225, 3251, 3252, 3253, 3273
1071 * For Linux, the sorting of addresses returned by getaddrinfo now also
1072 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
1073 Implemented by Ulrich Drepper.
1075 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
1076 Implemented by Ulrich Drepper.
1078 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
1080 * New iconv module for MIK. Contributed by Alexander Shopov.
1082 * For sites with broken group and/or passwd database, the auto-propagate
1083 option of nscd can prevent creating ID lookup entries from the results
1084 of a name lookup and vice versa. This usually is no problem but some
1085 site might have problems with the default behavior.
1086 Implemented by Ulrich Drepper.
1088 * Iterating over entire database in NIS can be slow. With the
1089 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
1090 to trade time for memory. The entire database will be read at once.
1091 Implemented by Ulrich Drepper.
1093 * The interfaces introduced in RFC 3542 have been implemented by
1096 * Support for the new ELF hash table format was added by Ulrich Drepper.
1098 * Support for priority inheritance mutexes added by Jakub Jelinek and
1101 * Support for priority protected mutexes added by Jakub Jelinek.
1103 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1104 or_IN, csb_PL, fy_NL, sr_ME.
1108 * More overflow detection functions.
1110 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1111 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1113 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1114 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1115 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1116 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1117 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1118 by Masahide Washizawa.
1120 * It is now possible to install audit libraries for the dynamic linker using
1121 LD_AUDIT. Implemented by Ulrich Drepper.
1123 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1124 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1125 For a libc and libpthread that works well on Linux 2.4 kernels, we
1126 recommend using the stable 2.3 branch.
1128 * The new function open_wmemstream acts like open_memstream,
1129 but uses a wchar_t wide character buffer.
1131 * The new function ppoll is an improved version of poll, similar to pselect.
1133 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1134 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1135 renameat, unlinkat, linkat, symlinkat, readlinkat.
1137 * New Linux kernel system calls: unshare,
1138 inotify_init, inotify_add_watch, inotify_rm_watch.
1140 * The euidaccess function is now also known by the alias eaccess,
1141 for compatibility with some other systems.
1143 * Timezone data updated to 2006b version.
1147 * The following bugs are resolved with this release:
1149 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1150 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1151 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1152 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1153 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1154 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1156 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1158 * As of this release, GCC 4 can be used to compile the C Library.
1160 * Timezone data updated to 2005m version.
1164 * The following bugs are resolved with this release:
1166 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1167 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1168 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1169 777, 787, 821, 822, 823, 825
1171 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1175 * Support for RFC 3678. Real implementations exist only for Linux so far.
1176 Implemented by Ulrich Drepper.
1178 * nscd can now cache entries persistently. Expiring entries are reloaded.
1179 For speedups the cache can be shared in memory with client processes.
1180 Implemented by Ulrich Drepper.
1182 * nscd can now perform SELinux checks.
1183 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1185 * getaddrinfo queries are now cached. Canonical name lookup is performed
1187 Implemented by Ulrich Drepper.
1189 * The nothrow function attribute is used when headers are used by gcc when
1190 compiling C code. This can avoid significant amounts of exception
1193 * The malloc functions perform more error checking and are stricter when
1194 it comes to reacting on errors. The default action is to terminate
1195 the process after showing an error message. Implemented by Ulrich Drepper.
1197 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1198 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1200 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1201 namespaces using the new function dlmopen(). This feature is of course,
1202 like most other dynamic loading functionality, not available in statically
1203 linked applications. Implemented by Ulrich Drepper.
1205 * Low-overhead boundary checking variants of string and some stdio functions
1206 were added. These are to be used in conjunction with a gcc patch by
1207 Jakub Jelinek which adds calls to these functions if possible.
1208 Implemented by Jakub Jelinek and Ulrich Drepper.
1210 * Old code for several operating systems and machine architectures that
1211 have not been in working condition in a long time have been removed from
1212 the main source tree maintained by the GNU C Library's maintainers.
1213 These files are now reside in the separate `ports' source module
1214 that is usable as an add-on when building the library.
1218 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1219 interrogate the dynamic linker, compatible with the Solaris interface.
1221 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1222 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1224 * getifaddrs now uses the netlink interface on Linux to get its information.
1225 Implemented by Thorsten Kukuk.
1227 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1228 Implemented by Ulrich Drepper.
1230 * support for non-executable stacks on x86 has been added. Changes mostly
1233 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1236 * getaddrinfo now performs destination address selection according to
1241 * Thread-safe interfaces for many functions that access locale data
1242 were added in version 2.3, but these features were omitted from NEWS.
1243 Many functions have variants with an `_l' suffix that take a `locale_t'
1244 object as a parameter rather than consulting the current locale.
1245 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1246 create and maintain `locale_t' objects. Additionally, the new function
1247 `uselocale' sets "the current locale" (as used by functions not so
1248 parameterized) set for an individual thread. These features were added
1249 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1251 * The functions getresuid, getresgid, setresuid, and setresgid, which
1252 have long been available on Linux, are now declared in <unistd.h>
1253 and are now also available on the Hurd.
1255 * ELF thread-local storage support (TLS) now works on x86-64.
1257 * The new dynamic string token $LIB is expanded in shared library names.
1258 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1260 * Aldy Hernandez contributed complete software floating point support for
1261 PowerPC machines with no FPU.
1263 * fexecve is implemented on Linux.
1265 * The `btowc' function should work at least twice as fast due to
1266 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1268 * With approriate thread add-ons cancelable functions are now implemented
1269 in libc.so as well. No need to call the function in libpthread. This
1270 change allowed to finally disable the incorrect and expensive handling
1271 of weak definition in ld.so.
1273 * Yet more PLT entries in libc.so have been removed. We finally arrived
1274 at the bare minimum. Startup times improved appropriately.
1276 * Support for the new Linux/x86 system call interface was added. The
1277 AT_SYSINFO auxiliary vector entry is recognized and handled.
1281 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1284 * iconv (the program and the interface) now accepts empty names (excluding
1285 options like //TRANSLIT) to mean "use charset of current locale".
1287 * localedef can now transliterate characters in strings which are not in
1288 the provided charmap. The information from the input locale is used.
1290 * Prelinking support was added for ELF targets. This requires additional
1291 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1293 * Read-only stdio streams now use mmap to speed up operation by eliminating
1294 copying and buffer underflows. To use add 'm' to the mode string of
1295 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1297 * The malloc functions were completely rewritten by Wolfram Gloger based
1298 on Doug Lea's malloc-2.7.0.c.
1300 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1301 implementation of regex.
1303 * Bruno Haible upgraded the iconv and locale implementation to support
1306 * Contents of the LC_* and LANG environment variables in the CEN style are
1307 not recognized anymore. It never was used. Change by Ulrich Drepper.
1309 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1310 thread-local storage (TLS) ABI on some platforms.
1311 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1313 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1314 EUC-JISX0213, and TSCII.
1316 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1317 BSD-compatible interface for getting all network interface addresses.
1318 Implementation for IPv4 by Roland McGrath.
1320 * Loading of locale data is faster due to the introduction of a locale
1321 archive. Implemented by Roland McGrath and Ulrich Drepper.
1323 * Startup times are significantly reduced by not using exported functions
1324 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1327 * Steven Munroe contributed a port to PowerPC64/Linux.
1331 * The Hurd now uses the GNU libio implementation of stdio rather than the
1332 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1334 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1335 with the same behavior as the Linux system call of the same name.
1339 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1340 128-bit long double format.
1342 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1343 IBM1161, and IBM1162 charsets.
1345 * Andreas Jaeger contributed a port to x86-64/Linux.
1347 * Peter Bruin contributed a port to PowerPC/Hurd.
1349 * libc functions using I/O streams now can handle wide-oriented streams
1352 * optimizations in the dynamic linker. Binaries created by recent binutils
1353 versions start up quicker due to reduced time spent on relocations.
1355 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1359 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1360 asinh, atanh, j0 for the 128-bit long double format.
1362 * Bruno Haible updated all the code handling Unicode in some form to
1363 support Unicode 3.1.
1365 * Speed of regex for single-byte locales is back to previous levels.
1366 Patch by Isamu Hasegawa.
1368 * Alpha, SPARC, and IA-64 now also using floating stacks.
1370 * Startup time of internationalized applications greatly improved through
1371 iconv cache. Use iconvconfig to generate the cache file.
1372 Contributed by Ulrich Drepper.
1374 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1375 severe performance problems. Patch by David Mosberger.
1377 * The Hurd port got a lot more functionality like AIO, various stdio
1378 extensions, etc. Mainly done by Roland McGrath.
1380 * mtrace can now lookup symbols in shared libraries.
1384 * Intel's IA-64 math library is largely integrated. It provides fast and
1385 accurate implementatations for most basic and standard math functions
1386 in float, double, and long double format.
1388 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1389 and asin for the 96-bit long double format and asin, log, tan for the
1390 128-bit long double format.
1392 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1393 The basic double functions exist today. Contributed by Abraham Ziv
1394 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1395 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1397 * An asynchronous name lookup library was added. The interface is designed
1398 after POSIX AIO. The proposal was circulated beforehand to get comments.
1399 No negative ones came in. Implemented by Ulrich Drepper.
1401 * Port to S390/64bit contributed by Martin Schwidefsky
1402 <schwidefsky@de.ibm.com>.
1404 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1405 of functions for Linux/IA-64.
1407 * The RPC code is now thread safe. Threads can now use the same service
1408 of different services at the same time. Patch by Eric Norum
1409 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1411 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1412 family of functions for Linux/S390.
1414 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1415 of functions for Linux/x86.
1417 * Port to Linux/CRIS contributed by Axis Communications.
1421 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1422 we can now check for namespace violations and missing declarations. The
1423 result is that almost all headers are now Unix-compliant (as defined in
1424 the upcoming XPG6). The negative side is that some programs might need
1425 corrections, too, if they depend on the incorrect form of the headers in
1426 previous versions which defined too many symbols and included too many
1429 * regex now handles multibyte character sets correctly.
1430 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1432 * iconv (the program) does now conform to the upcoming XPG6 and handles
1433 charmaps. Instead of the charset names the path of charmaps can be
1434 provided and the conversion happens based on this data.
1435 Contributed by Ulrich Drepper.
1437 * The locale program now provides detailed information about the installed
1442 only lists the names of the supported locales
1446 provides details such as country, language, and codeset name.
1447 Contributed by Ulrich Drepper.
1451 * The gencat program now parses the input file according to the charset
1452 selected by the LC_CTYPE category. This is important for stateful
1453 character sets. To make generating catalogs easier there is a way
1454 to overwrite the charset selected by the locale: before the first
1455 message or $ quote line the catalog can contain a line like
1457 $ codeset=ISO-8859-2
1459 to select the charset (ISO-8859-2 in this case).
1461 Implemented by Shinya Hanataka and Ulrich Drepper.
1463 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1464 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1465 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1467 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1468 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1470 * The LANGUAGE environment variable is now ignored unless the locale is
1471 changed from the default "C" locale.
1473 * The usual bug fixes.
1477 * Greg McGary added runtime support for bounds checking using gcc's
1478 new -fbounded-pointers option. ix86 target is complete. PowerPC
1481 * Thorsten Kukuk added secure mode support to nscd.
1483 * The Berkeley db libraries have been removed.
1485 Related, the nss_db module is now in a separate package since it
1486 obviously requires a database library being available.
1488 * Wide character I/O streams implemented by Ulrich Drepper.
1490 * Functions from the extended socket API added by Ulrich Drepper.
1492 * Functions feenableexcept and fedisableexcept to control the
1493 behaviour of individual exceptions have been added by Andreas Jaeger.
1495 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1497 * The resolver code has been updated from bind 8.2.3-T5B which supports
1498 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1501 This change could in some situations effect backward compatibility. Since
1502 now `_res' is a thread-local instead of a global variable, modifying it
1503 in one thread does not have any effect in other threads.
1505 The resolver library was also extended to allow IPv6 as the transport
1506 protocol for the requests. This work was done by Stig Venaas.
1508 * Compatibility code for K&R C compilers has been removed from the
1509 header files. A ISO C compiler is needed to use the library
1510 (conforming to either C89 or C99 standard).
1512 * Complete rewrite of the localedef program to support multibyte character
1513 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1514 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1515 Implemented by Ulrich Drepper.
1517 Bruno Haible significantly improved the generation and use of the data
1518 structures for the wide character tables.
1520 * Plural handling in gettext implemented by Ulrich Drepper.
1522 * The utmp daemon has been removed.
1524 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1526 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1529 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1531 * POSIX barriers implemented by Kaz Kylheku.
1533 * POSIX spawn function family implemented by Ulrich Drepper.
1535 * POSIX spinlocks are now available.
1537 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1539 * the configure option --enable-kernel=X.Y.Z allows to strip out
1540 compatibility for kernel versions before X.Y.Z. This is currently only
1541 implemented for Linux.
1543 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1544 field sin6_scope_id. This means that all programs using IPv6 should be
1545 recompiled. Don't expect binary compatibility with previous glibc
1548 * various conversion modules for IBM character sets contributed by
1551 * IA-64 port by Jes Sorensen and HJ Lu.
1565 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1567 * New xdr functions are added; some rpc functions are now 64bit clean.
1569 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1571 * Fixed known incompatibilities with glibc 2.0.
1573 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1575 * Optimized a number of functions (especially the ELF dynamic loader).
1577 * Update timezone data files.
1579 * lots of charmaps corrections
1581 * some new locale definitions and charmaps
1586 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1587 conform to POSIX member type requirements. Symbol versions have been
1588 adjusted as needed within the library, and for direct use by applications,
1589 but there is potential for problems if third-party libraries use
1590 struct timeval as part of their interface. This does not present
1591 a problem for X and other "essential" system libraries.
1593 * An additional locale model to support C++ Standard Library locale
1594 model and probably more was implemented by Ulrich Drepper.
1596 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1599 * Miles Bader provided the `argp' function family to support hierachical
1600 command line argument parsing, layered on top of getopt.
1602 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1604 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1607 * scanf recognizes the %a and %A format for scanning floating point numbers.
1609 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1610 information and interfaces for the available integer types.
1612 * about 130 new math functions were added to implement the ISO C9x math
1615 * the new header <complex.h> contains definitions of the complex math
1616 functions from ISO C 9X.
1618 * the new header <tgmath.h> defines generic macros to use complex or
1619 real valued functions.
1621 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1623 * Andreas Jaeger provided a test suite for the math library.
1625 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1627 * Ulrich Drepper added character set conversion functions (iconv).
1629 * Optimized string functions have been added.
1631 * The localedata addon is now part of glibc.
1633 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1635 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1636 daemon for NSS (nscd).
1638 Missing a better place here are some numbers on improvements. Under
1639 Linux 2.1.125 un-tar-ing the kernel sources takes
1643 using local files 12.19s 6.88s 22.91s
1645 using NIS 13.92s 8.91s 26.34s
1647 using NIS & nscd 10.37s 7.34s 25.30s
1649 using NIS+ 27.57s 30.37s 640.46s
1651 using NIS+ & nscd 10.25s 7.83s 26.51s
1653 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1655 Keep in mind that non-namelookup related operations dominate above times.
1656 It was just a common complain that using NIS+ unpacking the kernel is
1659 [1] The old nscd implementation is not available anymore since it was
1660 distributed with glibc up to version 2.0.98 and thus is now replaced.
1662 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1664 * Mark Kettenis provided a Hesiod NSS module.
1666 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1667 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1669 * rcmd can now handle netgroups (Dick Streefland).
1671 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1674 * Support for the IPv6 protocol has been added to the socket API, as per the
1675 latest draft standards.
1677 * Support for Linux 2.2 has been added.
1679 * Interface changes relative to the latest 2.0.x release:
1680 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1681 addseverity NEW: Unix98
1682 alphasort64 NEW: LFS
1683 argp_err_exit_status NEW: argp, GNU ext
1684 argp_error NEW: argp, GNU ext
1685 argp_failure NEW: argp, GNU ext
1686 argp_help NEW: argp, GNU ext
1687 argp_parse NEW: argp, GNU ext
1688 argp_program_bug_address NEW: argp, GNU ext
1689 argp_program_version NEW: argp, GNU ext
1690 argp_program_version_hook NEW: argp, GNU ext
1691 argp_state_help NEW: argp, GNU ext
1692 argp_usage NEW: argp, GNU ext
1693 authdes_create NEW: Secure RPC
1694 authdes_getucred NEW: Secure RPC
1695 authdes_pk_create NEW: Secure RPC
1696 backtrace NEW: GNU ext.
1697 backtrace_symbols NEW: GNU ext.
1698 backtrace_symbols_fd NEW: GNU ext.
1700 cacosf NEW: ISO C 9x
1701 cacosh NEW: ISO C 9x
1702 cacoshf NEW: ISO C 9x
1703 cacoshl NEW: ISO C 9x
1704 cacosl NEW: ISO C 9x
1711 casinf NEW: ISO C 9x
1712 casinh NEW: ISO C 9x
1713 casinhf NEW: ISO C 9x
1714 casinhl NEW: ISO C 9x
1715 casinl NEW: ISO C 9x
1717 catanf NEW: ISO C 9x
1718 catanh NEW: ISO C 9x
1719 catanhf NEW: ISO C 9x
1720 catanhl NEW: ISO C 9x
1721 catanl NEW: ISO C 9x
1722 cbc_crypt NEW: Secure RPC
1726 ccoshf NEW: ISO C 9x
1727 ccoshl NEW: ISO C 9x
1733 cimagf NEW: ISO C 9x
1734 cimagl NEW: ISO C 9x
1735 clearerr_locked REMOVED
1736 clntunix_create NEW: sunrpc ext
1738 clog10 NEW: ISO C 9x
1739 clog10f NEW: ISO C 9x
1740 clog10l NEW: ISO C 9x
1750 cprojf NEW: ISO C 9x
1751 cprojl NEW: ISO C 9x
1753 crealf NEW: ISO C 9x
1754 creall NEW: ISO C 9x
1759 csinhf NEW: ISO C 9x
1760 csinhl NEW: ISO C 9x
1763 csqrtf NEW: ISO C 9x
1764 csqrtl NEW: ISO C 9x
1768 ctanhf NEW: ISO C 9x
1769 ctanhl NEW: ISO C 9x
1771 des_setparity NEW: Secure RPC
1772 ecb_crypt NEW: Secure RPC
1773 endutxent NEW: Unix98
1775 exp10f NEW: ISO C 9x
1776 exp10l NEW: ISO C 9x
1780 fattach NEW: STREAMS
1781 fdetach NEW: STREAMS
1785 feclearexcept NEW: ISO C 9x
1786 fegetenv NEW: ISO C 9x
1787 fegetexceptflag NEW: ISO C 9x
1788 fegetround NEW: ISO C 9x
1789 feholdexcept NEW: ISO C 9x
1791 feraiseexcept NEW: ISO C 9x
1792 ferror_locked REMOVED
1793 fesetenv NEW: ISO C 9x
1794 fesetexceptflag NEW: ISO C 9x
1795 fesetround NEW: ISO C 9x
1796 fetestexcept NEW: ISO C 9x
1797 feupdateenv NEW: ISO C 9x
1798 fflush_locked REMOVED
1802 fgets_unlocked NEW: GNU ext.
1803 fileno_locked REMOVED
1815 fputc_locked REMOVED
1816 fputs_unlocked NEW: GNU ext.
1817 fread_unlocked NEW: GNU ext.
1822 fstatvfs NEW: Unix98
1826 ftruncate64 NEW: LFS
1828 fwrite_unlocked NEW: GNU ext.
1829 gai_strerror NEW: IPv6
1833 getchar_locked REMOVED
1835 getdate_err NEW: Unix98
1836 getdate_r NEW: GNU ext.
1838 getnameinfo NEW: IPv6
1839 getnetname NEW: Secure RPC
1840 getpmsg NEW: STREAMS
1841 getpt NEW: Unix98 PTY
1842 getrlimit64 NEW: LFS
1843 getutxent NEW: Unix98
1844 getutxid NEW: Unix98
1845 getutxline NEW: Unix98
1846 glob64 NEW: GNU ext.
1847 globfree64 NEW: GNU ext.
1848 gnu_get_libc_release NEW: GNU ext.
1849 gnu_get_libc_version NEW: GNU ext.
1850 grantpt NEW: Unix98 PTY
1851 host2netname NEW: Secure RPC
1853 iconv_close NEW: iconv
1854 iconv_open NEW: iconv
1855 if_freenameindex NEW: IPv6
1856 if_indextoname NEW: IPv6
1857 if_nameindex NEW: IPv6
1858 if_nametoindex NEW: IPv6
1859 in6addr_any NEW: IPv6
1860 in6addr_loopback NEW: IPv6
1861 inet6_isipv4mapped NEW: IPv6
1862 isastream NEW: STREAMS
1863 iswblank NEW: GNU ext.
1864 key_decryptsession NEW: Secure RPC
1865 key_decryptsession_pk NEW: Secure RPC
1866 key_encryptsession NEW: Secure RPC
1867 key_encryptsession_pk NEW: Secure RPC
1868 key_gendes NEW: Secure RPC
1869 key_get_conv NEW: Secure RPC
1870 key_secretkey_is_set NEW: Secure RPC
1871 key_setnet NEW: Secure RPC
1872 key_setsecret NEW: Secure RPC
1873 llrint NEW: ISO C 9x
1874 llrintf NEW: ISO C 9x
1875 llrintl NEW: ISO C 9x
1876 llround NEW: ISO C 9x
1877 llroundf NEW: ISO C 9x
1878 llroundl NEW: ISO C 9x
1883 lrintf NEW: ISO C 9x
1884 lrintl NEW: ISO C 9x
1885 lround NEW: ISO C 9x
1886 lroundf NEW: ISO C 9x
1887 lroundl NEW: ISO C 9x
1889 makecontext NEW: Unix98
1890 mempcpy NEW: GNU ext.
1893 modify_ldt NEW: kernel
1897 nearbyint NEW: ISO C 9x
1898 nearbyintf NEW: ISO C 9x
1899 nearbyintl NEW: ISO C 9x
1900 netname2host NEW: Secure RPC
1901 netname2user NEW: Secure RPC
1902 nexttoward NEW: ISO C 9x
1903 nexttowardf NEW: ISO C 9x
1904 nexttowardl NEW: ISO C 9x
1908 passwd2des NEW: Secure RPC
1910 pow10f NEW: GNU ext.
1911 pow10l NEW: GNU ext.
1914 printf_size NEW: GNU ext.
1915 printf_size_info NEW: GNU ext.
1916 profil_counter REMOVED
1917 pthread_mutexattr_getkind_np REPLACED
1918 pthread_mutexattr_setkind_np REPLACED
1919 ptsname NEW: Unix98 PTY
1920 ptsname_r NEW: Unix98 PTY
1922 putchar_locked REMOVED
1923 putgrent NEW: GNU ext.
1925 putpmsg NEW: STREAMS
1926 pututxline NEW: Unix98
1930 readdir64_r NEW: LFS
1931 remquo NEW: ISO C 9x
1932 remquof NEW: ISO C 9x
1933 remquol NEW: ISO C 9x
1935 roundf NEW: ISO C 9x
1936 roundl NEW: ISO C 9x
1938 scalbln NEW: ISO C 9x
1939 scalblnf NEW: ISO C 9x
1940 scalblnl NEW: ISO C 9x
1942 sendfile NEW: kernel
1943 setcontext NEW: Unix98
1944 setrlimit64 NEW: LFS
1945 setutxent NEW: Unix98
1947 sigignore NEW: Unix98
1948 sigqueue NEW: POSIX.1b
1949 sigrelse NEW: Unix98
1950 sigset NEW: POSIX.1b
1951 sigtimedwait NEW: POSIX.1b
1952 sigwaitinfo NEW: POSIX.1b
1953 sincos NEW: GNU ext.
1954 sincosf NEW: GNU ext.
1955 sincosl NEW: GNU ext.
1959 strcasestr NEW: GNU ext.
1960 strtoimax NEW: ISO C 9x
1961 strtoumax NEW: ISO C 9x
1962 strverscmp NEW: GNU ext.
1963 svcauthdes_stats NEW: Secure RPC
1964 svcunix_create NEW: sunrpc etx
1965 svcunixfd_create NEW: sunrpc ext
1966 swapcontext NEW: Unix98
1967 tcgetsid NEW: Unix98 PTY
1968 tdestroy NEW: GNU ext.
1969 tgamma NEW: ISO C 9x
1970 tgammaf NEW: ISO C 9x
1971 tgammal NEW: ISO C 9x
1975 truncf NEW: ISO C 9x
1976 truncl NEW: ISO C 9x
1978 unlockpt NEW: Unix98 PTY
1979 updwtmpx NEW: Unix98
1980 user2netname NEW: Secure RPC
1981 utmpxname NEW: Unix98
1982 versionsort NEW: GNU ext.
1983 versionsort64 NEW: GNU ext.
1985 wcscasecmp NEW: GNU ext.
1986 wcsncasecmp NEW: GNU ext.
1987 wcsnlen NEW: GNU ext.
1988 wcstoimax NEW: ISO C 9x
1989 wcstoll NEW: ISO C 9x
1990 wcstoull NEW: ISO C 9x
1991 wcstoumax NEW: ISO C 9x
1993 wordexp NEW: POSIX.2
1994 wordfree NEW: POSIX.2
1995 write_profiling REMOVED
1996 xdecrypt NEW: Secure RPC
1997 xdr_authdes_cred NEW: Secure RPC
1998 xdr_authdes_verf NEW: Secure RPC
1999 xdr_cryptkeyarg NEW: Secure RPC
2000 xdr_cryptkeyarg2 NEW: Secure RPC
2001 xdr_cryptkeyres NEW: Secure RPC
2002 xdr_getcredres NEW: Secure RPC
2003 xdr_key_netstarg NEW: Secure RPC
2004 xdr_key_netstres NEW: Secure RPC
2005 xdr_keybuf NEW: Secure RPC
2006 xdr_keystatus NEW: Secure RPC
2007 xdr_netnamestr NEW: Secure RPC
2008 xdr_sizeof NEW: Secure RPC
2009 xdr_unixcred NEW: sunrpc ext
2010 xencrypt NEW: Secure RPC
2011 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
2022 * inet_ntoa is thread-safe
2024 * updwtmp is moved from libutil to libc
2026 * rewrite of cbrt function
2028 * update of timezone data
2042 * add atoll function
2044 * fix complex problems in Berkeley DB code
2046 * fix math functions
2050 * fixed lots of header problems (especially Linux/GNU specific)
2052 * dynamic loader preserves all registers
2054 * Roland McGrath provided support for handling of auxiliary objects in
2055 the ELF dynamic loader.
2057 * support for parallel builds is improved
2061 * GNU extensions are no longer declared by default. To enable them you
2062 must define the macro `_GNU_SOURCE' in your program or compile with
2065 * The library has changed from using GNU ld symbol aliases to using weak
2066 symbols where available. The ELF object file format supports weak
2067 symbols; GNU ld also supports weak symbols in the a.out format. (There
2068 is also now support for other GNU ld extensions in ELF. Use the
2069 `--with-elf' option to configure to indicate you have ELF, and
2070 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
2071 of many files which contained only symbol aliases, reducing the size of
2072 the source and the compiled library; many other files were renamed to
2073 less cryptic names previously occupied by the symbol alias files.
2074 There is a new header file <elf.h> for programs which operate on
2075 files in the ELF format.
2077 * Converted to Autoconf version 2, so `configure' has more options.
2078 Run `configure --help' to see the details.
2080 * The library can now be configured to build profiling, highly-optimized
2081 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
2082 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
2083 `configure' enable building these extra libraries. The shared library is
2084 built by default when using both ELF and GNU ld. When shared libraries
2085 are enabled, the new library `-ldl' is available for arbitrary run-time
2086 loading of shared objects; its interface is defined in <dlfcn.h>. The
2087 new header file <link.h> gives access to the internals of the run-time
2088 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
2089 application of same name on other systems and it provides information
2090 about dynamically linked binaries.
2092 * The C library now provides the run-time support code for profiling
2093 executables compiled with `-pg'. Programs can control the profiling code
2094 through the interface in <sys/gmon.h>. The `gmon.out' files written by
2095 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
2096 the support for this file format was contributed by David Mosberger-Tang.
2098 * The math code has been replaced with a math library based on fdlibm from
2099 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
2100 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
2101 functions. The math functions now reside in a separate library, so
2102 programs using them will need to use `-lm' their linking commands.
2104 * John C. Bowman contributed optimized ix87 assembler inline functions.
2106 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2107 mechanism similar to that found in Solaris 2. This is now used for the
2108 group, passwd, hosts, networks, services, protocols, rpc, ethers,
2109 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
2110 file controls what services are used for each individual database. This
2111 works by loading shared libraries with names specified in `nsswitch.conf',
2112 so service modules can be changed or added at any time without even
2113 relinking any program. Currently there are the file, db, and NIS based
2114 NSS services available.
2116 * The new functions `strtoq' and `strtouq' parse integer values from
2117 strings, like `strtol' and `strtoul', but they return `long long int' and
2118 `unsigned long long int' values, respectively (64-bit quantities).
2120 * The new functions `strtof' and `strtold' parse floating-point values from
2121 strings, like `strtod', but they return `float' and `long double' values,
2122 respectively (on some machines `double' and `long double' are the same).
2124 * Ulrich Drepper has contributed new implementations of the floating-point
2125 printing and reading code used in the `printf' family of functions and
2126 `strtod', `strtof', and `strtold'. These new functions are perfectly
2127 accurate, and much faster than the old ones.
2129 * The implementation of the POSIX locale model was completely rewritten by
2130 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2131 to compile the POSIX locale definition.
2133 * The former dummy implementations of the strcoll and strxfrm function are
2134 now replaced by fully functional code contributed by Ulrich Drepper. The
2135 collation information comes from the POSIX locale definitions.
2137 * The new header <langinfo.h> defines an interface for accessing
2138 various locale-dependent data (using the locale chosen with `setlocale').
2140 * Ulrich Drepper has contributed a new suite of functions for operation on
2141 wide-character and multibyte-character strings, in <wchar.h>;
2142 and classification and case conversion of wide characters, in <wctype.h>.
2143 These new functions are conforming to the ISO C, Amendement 1 specification.
2145 * There is now a second implementation of the standard I/O library available.
2146 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2147 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2149 * You can now use positional parameter specifications in format strings
2150 for the `printf' and `scanf' families of functions. For example,
2151 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2152 ``Number 6, Mr Jones''. This is mainly useful when providing different
2153 format strings for different languages, whose grammars may dictate
2154 different orderings of the values being printed. To support this
2155 feature, the interface for `register_printf_handler' has changed; see
2156 the header file <printf.h> for details.
2158 * The `printf' and `scanf' families of functions now understand a new
2159 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2160 to group numbers as indicated by the locale; for `scanf' and friends, this
2161 says to accept as valid only a number with all the proper grouping
2162 separators in the right places. In the default "C" locale, numbers are
2163 not grouped; but locales for specific countries will define the usual
2164 conventions (i.e. separate thousands with `,' in the US locale).
2166 * The pgrp functions have been regularized, slightly incompatibly but much
2167 less confusingly. The core functions are now `getpgid' and `setpgid',
2168 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2169 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2170 provided for compatibility. There is no longer an incompatible `getpgrp'
2171 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2173 * The new header file <fts.h> and suite of functions simplify programs that
2174 operate on directory trees. This code comes from 4.4 BSD.
2176 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2177 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2178 NSS scheme used in glibc.
2180 * There is a new malloc debugging hook `__memalign_hook'.
2182 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2183 `unsigned int' in <sys/types.h>. These are for compatibility only and
2184 their use is discouraged.
2186 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2187 done differently, so that it works even without GNU ld.
2189 * New function `euidaccess' checks allowed access to a file like `access',
2190 but using the effective IDs instead of the real IDs.
2192 * The time zone data files have been updated for the latest and greatest
2193 local time conventions of the countries of the world.
2195 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2198 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2199 for formatting floating-point numbers. They are provided only for
2200 compatibility; new programs should use `sprintf' instead. There are
2201 also equivalent function for the `long double' floating-point type and
2202 all functions also exist in a reentrant form.
2204 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2205 functions for maintaining the login-record files (primarily of use to
2206 system programs such as `login'), and convenient functions for
2207 allocating and initializing a pseudo-terminal (pty) device.
2209 * Ulrich Drepper has contributed new support for System V style
2210 shared memory and IPC on systems that support it.
2212 * Ulrich Drepper has contributed several miscellaneous new functions found
2213 in System V: The `hsearch' family of functions provide an effective
2214 implementation of hash tables; `a64l' and `l64a' provide a very simple
2215 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2218 * Ulrich Drepper has contributed new reentrant counterparts for the
2219 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2221 * Ulrich Drepper has contributed new, highly-optimized versions of several
2222 string functions for the i486/Pentium family of processors.
2224 * Ulrich Drepper has updated the Linux-specific code, based largely
2225 on work done in Hongjiu Lu's version of GNU libc for Linux.
2226 The GNU library now supports Linux versions 2.0.10 and later,
2227 using the ELF object file format (i[3456]86-*-linux).
2229 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2231 * David Mosberger-Tang and Richard Henderson have ported the C library
2232 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2233 dynamic linking support for ELF/Alpha.
2235 * Richard Henderson contributed several Alpha optimized assembler function
2236 for arithmetic and string handling.
2238 * Ulrich Drepper has contributed a new set of message catalog functions to
2239 support multiple languages using the <libintl.h> interface, for use with
2240 his new package GNU gettext. Translation volunteers have contributed
2241 catalogs of the library's messages in Spanish, German, and Korean.
2243 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2244 program and the `catgets' function for reading the catalog files it
2245 creates. (The <libintl.h> interface is preferred; we include the
2246 <nl_types.h> interface using `catgets' only for source compatibility with
2247 programs already written to use it.)
2249 * New header file <values.h> gives SVID-compatible names for <limits.h>
2252 * Various new macros, declarations, and small header files for compatibility
2255 * New function `group_member' is a convenient way to check if a process has
2256 a given effective group ID.
2258 * When using GCC 2.7 and later, the socket functions are now declared in a
2259 special way so that passing an argument of type `struct sockaddr_in *',
2260 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2261 `struct sockaddr *' type, does not generate a type-clash warning.
2263 * New function `error' declared in header file <error.h> is a convenient
2264 function for printing error messages and optionally exiting; this is the
2265 canonical function used in GNU programs. The new functions `err', `warn',
2266 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2267 doing the same thing.
2269 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2270 POSIX.2 `glob' function to do ~ and {...} expansion.
2272 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2273 `clearenv' which is used in POSIX.9 is also available.
2275 * New function `getsid' returns session ID number on systems that support it.
2277 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2278 files <db.h> and <mpool.h> provide a rich set of functions for several
2279 types of simple databases stored in memory and in files, and <ndbm.h> is
2280 an old `ndbm'-compatible interface using the `db' functions. Link with
2281 `-ldb' to get these functions.
2283 * New macro `strdupa' copies a string like `strdup', but uses local stack
2284 space from `alloca' instead of dynamic heap space from `malloc'.
2286 * New function `strnlen' is like `strlen' but searches only a given maximum
2287 number of characters for the null terminator. `stpncpy', `strndup' and
2288 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2291 * New function `statfs' in header <sys/statfs.h>.
2293 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2294 provide convenient functions for operating on blocks of null-terminated
2297 * A new suite of functions in <utmp.h> handle all the details of reading
2298 and writing the utmp file.
2300 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2303 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2304 completely POSIX compliant and also implemented the extended functionality
2305 to handle alternate digit representation and alternate era date formats.
2307 * Ulrich Drepper provided an implementation of the `strptime' function
2308 defined in XPG4.2 which transforms a string into a `struct tm' value.
2310 * Paul Eggert provided the tzselect shell script as part of the timezone
2311 code. The shell script makes it easy to select the correct timezone
2314 * The implementation of the malloc family of functions is completely replaced
2315 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2316 The implementation uses the mmap function (if available) and it is
2317 optimized for the use in multi threaded programs.
2319 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2320 functions. This new functionality is usable by specifying a special
2321 salt string and it is compatible with implementation on *BSD systems.
2323 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2324 `getsubopt' to handle second level command line options, `bsd_signal'
2325 to access BSD style `signal' functionality, the obsolete `regexp' style
2328 * the `lchown' function is available on system which support this
2331 * The implementation of the shadow password handling function was contributed
2334 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2336 * POSIX.1g support was added. The <sys/select.h> header is available,
2337 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2338 implementation of `getaddrinfo'.
2342 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2344 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2345 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2347 * The new function `daemon' from 4.4 BSD is useful for server programs that
2348 want to put themselves in the background.
2350 * Joel Sherrill has contributed support for several standalone boards that
2351 run without an operating system.
2353 * `printf', `scanf' and friends now accept a `q' type modifier for long
2354 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2356 * All of the code taken from BSD (notably most of the math and networking
2357 routines) has been updated from the BSD 4.4-Lite release.
2359 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2361 * The new functions `getdomainname' and `setdomainname' fetch or change the
2362 YP/NIS domain name. These are system calls which exist on systems which
2365 * The time zone data files have been updated for the latest international
2368 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2369 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2373 * The C library now includes support for Sun RPC, from Sun's free
2374 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2375 are included. (There is still no support for YP.)
2377 * Tom Quinn has contributed a port of the C library to SGI machines running
2378 Irix 4 (mips-sgi-irix4).
2380 * The new `lockf' function is a simplified interface to the locking
2381 facilities of `fcntl', included for compatibility.
2383 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2385 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2387 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2390 * The error message printed by `assert' for a failed assertion now includes
2391 the name of the program (if using GNU ld) and the name of the calling
2392 function (with versions of GCC that support this).
2394 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2396 * The library now includes the <sys/mman.h> header file and memory
2397 management functions `mmap', `munmap', `mprotect', `msync', and
2398 `madvise', on systems that support those facilities.
2400 * The interface for `mcheck' has changed slightly: the function called to
2401 abort the program when an allocation inconsistency is detected now takes
2402 an argument that indicates the type of failure. The new function
2403 `mprobe' lets you request a consistency check for a particular block at
2404 any time (checks are normally done only when you call `free' or `realloc'
2407 * It is now possible to easily cross-compile the C library, building on one
2408 system a library to run on another machine and/or operating system. All
2409 you need to do is set the variable `HOST_CC' in `configparms' to the
2410 native compiler for programs to run on the machine you are building on (a
2411 few generator programs are used on Unix systems); set `CC' to the
2414 * The new function `fexecve' (only implemented on the GNU system) executes
2415 a program file given a file descriptor already open on the file.
2419 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2420 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2422 * You can set the variable `libprefix' in `configparms' to specify a prefix
2423 to be prepended to installed library files; this makes it easy to install
2424 the GNU C library to be linked as `-lgnuc' or whatever.
2426 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2427 copies a limited number of characters from a string, and returns the
2428 address of the last character written.
2430 * You no longer need to check for whether the installed `stddef.h' is
2431 compatible with the GNU C library. configure now checks for you.
2433 * You can now define a per-stream `fileno' function to convert the
2434 stream's cookie into an integral file descriptor.
2436 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2437 allocates zero bytes of storage, and returns a unique pointer which
2438 you can pass to `realloc' or `free'. The behavior is undefined if
2439 you dereference this pointer.
2441 * The C library now runs on Sony NEWS m68k machines running either
2442 NewsOS 3 or NewsOS 4.
2444 * The new `syscall' function is a system-dependent primitive function
2445 for invoking system calls. It has the canonical behavior on Unix
2446 systems, including unreliable return values for some calls (such as
2447 `pipe', `fork' and `getppid').
2449 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2450 to `EAGAIN', which is the preferred name. On systems whose kernels
2451 use two distinct codes, the C library now translates EWOULDBLOCK to
2452 EAGAIN in every system call function.
2456 * The GNU C Library Reference Manual is now distributed with the library.
2457 `make dvi' will produce a DVI file of the printed manual.
2458 `make info' will produce Info files that you can read on line using C-h i
2459 in Emacs or the `info' program.
2460 Please send comments on the manual to bug-glibc-manual@gnu.org.
2462 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2464 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2466 * Jason Merrill has contributed a port to the Sequent Symmetry running
2467 Dynix version 3 (i386-sequent-dynix).
2469 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2470 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2472 * New function `memory_warnings' lets you arrange to get warnings when
2473 malloc is running out of memory to allocate, like Emacs gives you.
2475 * The C library now contains the relocating allocator used in Emacs 19 for
2476 its editing buffers. This allocator (ralloc) minimizes allocation
2477 overhead and fragmentation by moving allocated regions around whenever it
2478 needs to. You always refer to a ralloc'd region with a "handle" (a
2479 pointer to a pointer--an object of type `void **').
2481 * There is a new `printf' format: `%m' gives you the string corresponding
2482 to the error code in `errno'.
2484 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2485 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2486 pass, the `a' modifier says to fill in a `char **' you pass with a
2489 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2490 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2491 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2493 * `mkstemp' is a traditional Unix function to atomically create and open a
2494 uniquely-named temporary file.
2498 * The standard location for the file that says what the local timezone is
2499 has changed again. It is now `/usr/local/etc/localtime' (or more
2500 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2502 * The distribution no longer contains any files with names longer than 14
2505 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2506 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2508 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2512 * The configuration process has changed quite a bit. The `configure'
2513 script is now used just like the configuration scripts for other GNU
2514 packages. The `sysdeps' directory hierarchy is much rearranged.
2515 The file `INSTALL' explains the new scheme in detail.
2517 * The header files no longer need to be processed into ANSI C and
2518 traditional C versions. There is just one set of files to install, and
2519 it will work with ANSI or old C compilers (including `gcc -traditional').
2521 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2522 MIPS DECStation running Ultrix 4.
2524 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2525 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2526 made itself into a shared library.
2528 * Yet further improved support for the i386, running 4.3 BSD-like systems
2529 (such as Mach 3 with the Unix single-server), or System V.
2531 * New function `strncasecmp' to do case-insensitive string comparison
2532 with limited length.
2534 * New function `strsep' is a reentrant alternative to `strtok'.
2536 * New functions `scandir' and `alphasort' for searching directories.
2538 * New function `setenv' is a better interface to `putenv'.
2540 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2541 function for traversing a directory tree.
2543 * The GNU obstack package is now also part of the C library.
2544 The new function `open_obstack_stream' creates a stdio stream that
2545 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2546 formatted output directly to an obstack.
2548 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2549 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2551 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2553 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2554 things to your strings.
2556 * There are some new test programs: test-fseek, testmb, and testrand.
2558 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2559 These ports are not finished, but are a good starting place for really
2560 supporting those systems.
2562 * `/etc/localtime' is now the standard location for the file that says what
2563 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2564 This follows the general principle that `/etc' is the place for all local
2565 configuration files.
2567 * The C library header files now use `extern "C"' when used by the C++
2568 compiler, so the C library should now work with C++ code.
2570 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2571 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2574 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2575 function which uses the `merge sort' algorithm, and is said to be
2576 significantly faster than the old GNU `qsort' function. Merge sort is
2577 now the standard `qsort' function. The new algorithm can require a lot
2578 of temporary storage; so, the old sorting function is called when the
2579 required storage is not available.
2581 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2582 provides the Unix `crypt' function, plus some other entry points.
2584 * The code and header files taken from 4.4 BSD have been updated with the
2585 latest files released from Berkeley.
2587 ----------------------------------------------------------------------
2588 Copyright information:
2590 Copyright (C) 1992-2015 Free Software Foundation, Inc.
2592 Permission is granted to anyone to make or distribute verbatim copies
2593 of this document as received, in any medium, provided that the
2594 copyright notice and this permission notice are preserved,
2595 thus giving the recipient permission to redistribute in turn.
2597 Permission is granted to distribute modified versions
2598 of this document, or of portions of it,
2599 under the above conditions, provided also that they
2600 carry prominent notices stating who last changed them.
2603 version-control: never