1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2014 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
10 * The following bugs are resolved with this release:
12 6652, 12926, 14132, 14138, 14171, 15215, 15884, 17266, 17344, 17363,
13 17370, 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522,
14 17555, 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585,
17 * The minimum GCC version that can be used to build this version of the GNU
18 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
19 still be used to compile programs using the GNU C Library.
21 * New locales: tu_IN, bh_IN.
25 * The following bugs are resolved with this release:
27 6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347, 15514,
28 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198, 16275,
29 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447, 16516,
30 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600, 16609,
31 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639, 16642,
32 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689, 16695,
33 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739, 16740,
34 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791, 16796,
35 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849, 16854,
36 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912, 16915,
37 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958, 16965,
38 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022, 17031,
39 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078, 17079,
40 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150, 17153,
41 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
43 * Optimized strchrnul implementation for AArch64. Contributed by ARM Ltd.
45 * Reverted change of ABI data structures for s390 and s390x:
46 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
47 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
48 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
49 are preserved pointing straight to the same implementation as the old ones.
50 Given that, new callers will simply provide a too-big buffer to these
51 functions. Any applications/libraries out there that embed jmp_buf or
52 ucontext_t in an ABI-relevant data structure that have already been rebuilt
53 against 2.19 headers will have to rebuilt again. This is necessary in any
54 case to revert the breakage in their ABI caused by the glibc change.
56 * Support for file description locks is added to systems running the
57 Linux kernel. The standard file locking interfaces are extended to
58 operate on file descriptions, not file descriptors, via the use of
59 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
60 are associated with an open file instead of a process.
62 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
64 * The minimum Linux kernel version that this version of the GNU C Library
65 can be used with is 2.6.32.
67 * Running the testsuite no longer terminates as soon as a test fails.
68 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
69 with PASS or FAIL lines for individual tests. A summary of the results is
70 printed, including a list of failing lists, and "make check" exits with
71 error status if there were any unexpected failures. "make check
72 stop-on-test-failure=y" may be used to keep the old behavior.
74 * The am33 port, which had not worked for several years, has been removed
77 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
78 supported; they now act the same as _DEFAULT_SOURCE (but generate a
79 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
80 conflicted with POSIX (support for which was removed in 2.19), the
81 interfaces those macros enabled remain available when compiling with
82 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
85 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
87 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
88 This may improve lock scaling of existing programs on TX capable systems.
89 The lock elision code is only built with --enable-lock-elision=yes and
90 then requires a GCC version supporting the TX builtins. With lock elision
91 default mutexes are elided via __builtin_tbegin, if the cpu supports
92 transactions. By default lock elision is not enabled and the elision code
95 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
96 copy the path argument. This allowed programs to cause posix_spawn to
97 deference a dangling pointer, or use an unexpected pathname argument if
98 the string was modified after the posix_spawn_file_actions_addopen
101 * All supported architectures now use the main glibc sysdeps directory
102 instead of some being in a separate "ports" directory (which was
103 distributed separately before glibc 2.17).
105 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
106 On configurations that support it (all Linux configurations), it's now
107 used regardless of the --enable-add-ons switch to configure. It is no
108 longer possible to build such configurations without pthreads support.
110 * Locale names, including those obtained from environment variables (LANG
111 and the LC_* variables), are more tightly checked for proper syntax.
112 setlocale will now fail (with EINVAL) for locale names that are overly
113 long, contain slashes without starting with a slash, or contain ".." path
114 components. (CVE-2014-0475) Previously, some valid locale names were
115 silently replaced with the "C" locale when running in AT_SECURE mode
116 (e.g., in a SUID program). This is no longer necessary because of the
119 * On x86-64, the dynamic linker's lazy-binding support is now compatible
120 with application code using Intel MPX instructions. (With all previous
121 versions, the MPX register state could be clobbered when making calls
122 into or out of a shared library.) Note that while the new dynamic
123 linker is compatible with all known x86 hardware whether or not it
124 supports Intel MPX, some x86 instruction-set emulators might fail to
125 handle the new instruction encodings. This is known to affect Valgrind
126 versions up through 3.9 (but will be fixed in the forthcoming 3.10
127 release), and might affect other tools that do instruction emulation.
129 * Support for loadable gconv transliteration modules has been removed.
130 The support for transliteration modules has been non-functional for
131 over a decade, and the removal is prompted by security defects. The
132 normal gconv conversion modules are still supported. Transliteration
133 with //TRANSLIT is still possible, and the //IGNORE specifier
134 continues to be supported. (CVE-2014-5119)
136 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
137 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
138 resulting a denial-of-service security vulnerability in applications which
139 use functions related to iconv. (CVE-2014-6040)
143 * The following bugs are resolved with this release:
145 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
146 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
147 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
148 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
149 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
150 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
151 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
152 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
153 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
154 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
155 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
156 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
157 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
158 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
159 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
160 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
161 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
162 16431, 16453, 16474, 16506, 16510, 16529
164 * Slovenian translations for glibc messages have been contributed by the
165 Translation Project's Slovenian team of translators.
167 * The public headers no longer use __unused nor __block. This change is to
168 support compiling programs that are derived from BSD sources and use
169 __unused internally, and to support compiling with Clang's -fblock
170 extension which uses __block.
172 * CVE-2012-4412 The strcoll implementation caches indices and rules for
173 large collation sequences to optimize multiple passes. This cache
174 computation may overflow for large collation sequences and may cause a
175 stack or buffer overflow. This is now fixed to use a slower algorithm
176 which does not use a cache if there is an integer overflow.
178 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
179 rules for large collation sequences to optimize multiple passes and falls
180 back to alloca if malloc fails, resulting in a possible stack overflow.
181 The implementation now falls back to an uncached collation sequence lookup
184 * CVE-2013-4788 The pointer guard used for pointer mangling was not
185 initialized for static applications resulting in the security feature
186 being disabled. The pointer guard is now correctly initialized to a
187 random value for static applications. Existing static applications need
188 to be recompiled to take advantage of the fix (bug 15754).
190 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
191 to the d_name member of struct dirent, or omit the terminating NUL
192 character. (Bugzilla #14699).
194 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
195 aligned_alloc functions could allocate too few bytes or corrupt the
196 heap when passed very large allocation size values (Bugzilla #15855,
199 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
200 for AF_INET6 has been fixed (Bugzilla #16072).
202 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
203 pap_CW, quz_PE, the_NP.
205 * Substantially revised locales: gd_GB, ht_HT
207 * The LC_ADDRESS field was updated to support country_car for almost all
210 * ISO 1427 definitions were updated.
212 * ISO 3166 definitions were updated.
214 * The localedef utility now supports --big-endian and --little-endian
215 command-line options to generate locales for a different system from that
216 for which the C library was built.
218 * Binary locale files now only depend on the endianness of the system for
219 which they are generated and not on other properties of that system. As a
220 consequence, binary files generated with new localedef may be incompatible
221 with old versions of the GNU C Library, and binary files generated with
222 old localedef may be incompatible with this version of the GNU C Library,
223 in the following circumstances:
225 + Locale files may be incompatible on m68k systems.
227 + Locale archive files (but not separate files for individual locales) may
228 be incompatible on systems where plain "char" is signed.
230 * The configure option --disable-versioning has been removed. Builds with
231 --disable-versioning had not worked for several years.
233 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
234 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
236 * SystemTap probes for malloc have been introduced.
238 * SystemTap probes for slow multiple precision fallback paths of
239 transcendental functions have been introduced.
241 * Support for powerpc64le has been added.
243 * The soft-float powerpc port now supports e500 processors.
245 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
247 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
248 set of header declarations that are enabled by default, even when other
249 feature test macros or compiler options such as -std=c99 would otherwise
250 disable some of those declarations.
252 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
253 conflict with POSIX. The libbsd-compat library (which was a dummy library
254 that did nothing) has also been removed.
256 * Preliminary documentation about Multi-Thread, Async-Signal and
257 Async-Cancel Safety has been added.
259 * Change of ABI data structures for s390 and s390x:
260 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
261 allow for future hardware extensions. All library functions that accept or
262 return these structures were versioned in order to provide backwards
263 compatibility with existing code. However, not all cases can be handled
264 with interface versioning. If an application embeds either structure into
265 another structure and that structure is passed to another compilation unit
266 which expects the newer larger-sized object then any access to the new
267 fields will result in undefined behaviour. Similarly any access to fields
268 that were moved by the enlarging of the structures will cause undefined
269 behaviour. To fix the undefined behaviour all objects that are part of the
270 final in-memory image must agree on the size of structures, and this may
271 require recompilation.
275 * The following bugs are resolved with this release:
277 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
278 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
279 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
280 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
281 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
282 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
283 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
284 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
285 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
286 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
287 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
288 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
289 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
292 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
293 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
294 Distributions can re-enable building and using pt_chown via the new configure
295 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
296 considerable security risks and should only be used if the distribution
297 understands and accepts the risks.
299 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
302 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
303 fixed (Bugzilla #15330).
305 * Add support for calling C++11 thread_local object destructors on thread
306 and program exit. This needs compiler support for offloading C++11
307 destructor calls to glibc.
309 * Improved worst case performance of libm functions with double inputs and
312 * Support for priority inherited mutexes in pthread condition variables on
313 non-x86 architectures.
315 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
317 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
319 * Optimized string functions for ARM. Implemented by Will Newton and
322 * Optimized libm functions for SPARC. Implemented by David S. Miller.
324 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
327 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
328 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
330 * Added a benchmark framework to track performance of functions in glibc.
332 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
333 It is based on draft TS 18661 and currently enabled as a GNU extension.
335 * On Linux, the clock function now uses the clock_gettime system call
336 for improved precision, rather than old times system call.
338 * Added support for version-3 tz format files. This is needed when using
339 the tz database release 2013e or later, and affects a few unusual cases --
340 currently only TZ='America/Godthab' for time stamps after 2037.
342 * Added new API functions pthread_getattr_default_np and
343 pthread_setattr_default_np to get and set the default pthread
344 attributes of a process.
346 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
347 This may improve lock scaling of existing programs on TSX capable systems.
348 When the --enable-lock-elision=yes parameter is specified at configure
349 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
352 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
353 availability). Implemented by Ryan S. Arnold.
355 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
359 * The following bugs are resolved with this release:
361 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
362 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
363 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
364 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
365 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
366 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
367 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
368 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
369 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
370 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
371 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
372 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
373 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
374 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
375 14879, 14889, 14893, 14898, 14914.
377 * Optimization of memcpy for MIPS.
379 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
380 EMFILE has been fixed (Bugzilla #14889).
382 * The add-on ports collection is now distributed in the "ports" subdirectory
383 of the main GNU C Library distribution, rather than separately.
385 * Port to ARM AArch64 contributed by Linaro.
387 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
388 Optimized versions of memcpy, memset, and memcmp added for System z10 and
390 Implemented by Andreas Krebbel.
392 * The new function secure_getenv allows secure access to the environment,
393 returning NULL if running in a SUID/SGID process. This function replaces
394 the internal function __secure_getenv.
396 * SystemTap static probes have been added into the dynamic linker.
397 Implemented by Gary Benson.
399 * Optimizations of string functions strstr, strcasestr and memmem.
400 Implemented by Maxim Kuvyrkov.
402 * The minimum Linux kernel version that this version of the GNU C Library
403 can be used with is 2.6.16.
405 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
406 powerpc POWER7. Implemented by Will Schmidt.
408 * New configure option --disable-nscd builds the C library such that it
409 never attempts to contact the Name Service Caching Daemon (nscd).
410 New configure option --disable-build-nscd avoids building nscd itself;
411 this is the default if --disable-nscd is used.
413 * Improved support for cross-compilation, including cross-testing and
414 bootstrap builds without a previously built glibc.
416 * Several testsuite tests are now able to test multiple IFUNC variants of an
417 interface, rather than just testing the one that would be chooen by
420 * New configure options --with-bugurl and --with-pkgversion, for
421 distributors to use to embed their bug-reporting and package version
422 information in --help and --version output.
424 * The ttyname and ttyname_r functions on Linux now fall back to searching for
425 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
426 allows creation of chroots without the procfs mounted on /proc.
428 * The `crypt' function now fails if passed salt bytes that violate the
429 specification for those values. On Linux, the `crypt' function will
430 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
431 enabled, and fail on encrypted strings using the MD5 or DES algorithm
432 when the mode is enabled.
434 * The `clock_*' suite of functions (declared in <time.h>) is now available
435 directly in the main C library. Previously it was necessary to link with
436 -lrt to use these functions. This change has the effect that a
437 single-threaded program that uses a function such as `clock_gettime' (and
438 is not linked with -lrt) will no longer implicitly load the pthreads
439 library at runtime and so will not suffer the overheads associated with
440 multi-thread support in other code such as the C++ runtime library.
442 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
447 * The following bugs are resolved with this release:
449 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
450 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
451 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
452 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
453 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
454 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
455 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
456 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
457 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
458 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
459 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
460 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
461 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
462 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
463 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
464 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
465 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
466 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
467 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
468 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
469 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
470 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
473 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
474 configuring glibc with:
475 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
476 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
477 Implemented by H.J. Lu.
481 + define static_assert
483 + do not declare gets
485 + declare at_quick_exit and quick_exit also for ISO C11
487 + aligned_alloc. NB: The code is deliberately allows the size parameter
488 to not be a multiple of the alignment. This is a moronic requirement
489 in the standard but it is only a requirement on the caller, not the
494 + uchar.h support added
496 + CMPLX, CMPLXF, CMPLXL added
498 Implemented by Ulrich Drepper.
500 * Support for the IA-64 has been moved to ports.
502 * Remove support for anything but ELF binary format
504 * Checking versions of poll, ppoll added.
505 Implemented by Ulrich Drepper.
507 * More generic and 64-bit performance optimizations to math functions.
508 Implemented by Ulrich Drepper.
510 * New configure option --enable-obsolete-rpc makes the deprecated RPC
511 headers and functions available at compile time as they were before
512 version 2.14. This option will be removed at some time in the future
513 after the TI-RPC library becomes fully sufficient for the needs of
514 existing applications.
516 * Compatibility code for Linux kernel versions before 2.4 has been removed.
517 Note that glibc is not expected to work with any Linux kernel version
520 * New header <sys/auxv.h> and function getauxval allowing easy access to
521 the AT_* key-value pairs passed from the Linux kernel. The header also
522 defines the HWCAP_* bits associated with the AT_HWCAP key.
524 * New locales: mag_IN
526 * New configure option --enable-systemtap builds SystemTap static probes
527 into libc for setjmp and longjmp and into libpthread for various operations.
528 So far the setjmp/longjmp probes and some of the libpthread probes are
529 provided only for i*86 and x86_64.
530 Implemented by Roland McGrath and Rayson Ho.
532 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
534 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
537 * More optimized functions for SPARC. Implemented by David S. Miller.
539 * Improved support for cross-compilation, especially bootstrap builds
540 without a previously built glibc.
542 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
543 Chris Metcalf from Tilera.
545 * Support for the old ARM ABI has been removed from ports. Only the EABI is
546 now supported for ARM processors.
548 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
549 as the name of the dynamic linker, to distinguish it from the
550 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
552 * Support for CRIS has been removed from ports.
554 * A new class of installed header has been documented for low-level
555 platform-specific functionality. PowerPC added the first instance with a
556 function to provide time base register access. Contributed by Tulio
557 Magno Quites Machado Filho.
559 * ix86 configurations now install header files that are consistent with
560 what x86-64 configurations install. These same header files can be used
561 for -m32, -m64, or -mx32 builds.
562 Contributed by H.J. Lu.
564 * Math library bug fixes. A thorough audit of all open math library bugs was
565 conducted by Joseph Myers. Significant progress was made on many math
566 library bugs resulting in more accurate exceptions and function results.
567 Many thanks to all those that contributed including Andreas Jaeger for his
568 patch review and work on the x87 trigonometric instruction issues.
570 * Timezone data is no longer installed. Timezone-related binaries and scripts
571 will continue to be installed. Users should obtain their timezone data from
572 their distribution provider or from the tzdata package at
573 <ftp://munnari.oz.au/pub/>.
577 * The following bugs are resolved with this release:
579 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
580 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
581 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
582 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
583 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
584 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
585 13484, 13506, 13515, 13523, 13524, 13538, 13540
587 * New program pldd to list loaded object of a process
588 Implemented by Ulrich Drepper.
590 * Add nss_db support back to glibc. No more dependency on Berkeley db
591 and support for initgroups lookups.
592 Implemented by Ulrich Drepper.
594 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
595 Contributed by HJ Lu.
597 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
598 Contributed by HJ Lu.
600 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
601 on x86-32 and x86-64.
602 Contributed by Liubov Dmitrieva.
604 * Optimized strchr and strrchr for SSE on x86-32.
605 Contributed by Liubov Dmitrieva.
607 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
608 for x86-64 and x86-32.
609 Contributed by Liubov Dmitrieva.
611 * New interfaces: scandirat, scandirat64
612 Implemented by Ulrich Drepper.
614 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
615 Implemented by Ulrich Drepper.
617 * nscd now also caches the netgroup database.
618 Implemented by Ulrich Drepper.
620 * Integrate libm with gcc's -ffinite-math-only option.
621 Implemented by Ulrich Drepper.
623 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
624 to math functions. Implemented by Ulrich Drepper.
626 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
627 Implemented by Ulrich Drepper.
629 * New Linux interfaces: process_vm_readv, process_vm_writev
631 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
632 Implemented by Ulrich Drepper.
634 * Optimized nearbyint and strcasecmp for PPC.
635 Implemented by Adhemerval Zanella.
637 * New locales: bho_IN, unm_US, es_CU, ta_LK
641 * The following bugs are resolved with this release:
643 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
644 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
645 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
646 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
647 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
648 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
649 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
650 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
651 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
652 12795, 12811, 12813, 12814, 12841
654 * The RPC implementation in libc is obsoleted. Old programs keep working
655 but new programs cannot be linked with the routines in libc anymore.
656 Programs in need of RPC functionality must be linked against TI-RPC.
657 The TI-RPC implementation is IPv6 enabled and there are other benefits.
659 Visible changes of this change include (obviously) the inability to link
660 programs using RPC functions without referencing the TI-RPC library and the
661 removal of the RPC headers from the glibc headers.
662 Implemented by Ulrich Drepper.
664 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
665 syncfs, setns, sendmmsg
667 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
668 yue_HK, lij_IT, mhr_RU
670 * New encodings: CP770, CP771, CP772, CP773, CP774
672 * New program sotruss to trace calls through PLTs
673 Implemented by Ulrich Drepper.
675 * The malloc hook implementation is marked deprecated and will be removed
676 from the default implementation in the next version. The design never
677 worked ever since the introduction of threads. Even programs which do
678 not create threads themselves can use multiple threads created internally.
682 * The following bugs are resolved with this release:
684 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
685 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
686 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
687 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
690 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
692 * POWER7 optimizations: memset, memcmp, strncmp
694 * New optimized string functions for x86-64: strnlen (SSE2),
695 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
696 Implemented by Ulrich Drepper.
700 * The following bugs are resolved with this release:
702 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
703 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
704 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
705 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
706 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
707 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
708 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
709 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
711 * New interfaces: pthread_getname_np, pthread_setname_np
713 * New Linux interface: recvmmsg
715 * STT_GNU_IFUNC implemented for Sparc by David Miller.
717 * The dynamic linker now recognizes supported ABI versions from the
718 EI_ABIVERSION field in the ELF header.
719 Implemented by Ulrich Drepper.
721 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
722 will not be used to fill in password fields in the passwd.byname replies.
723 Instead it is used to synthesize the shadow.byname table, should it be
724 missing. This is a useful mode in some installations involving Solaris.
725 Implemented by Ulrich Drepper.
727 * New locales: kok_IN, sq_MK, cv_RU
731 * The following bugs are resolved with this release:
733 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
734 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
735 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
736 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
737 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
738 10789, 10817, 10823, 10840, 10847
740 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
742 Implemented by Ulrich Drepper.
744 * Checking version of longjmp added that fails if an uninitialized stack
745 frame would be created. Implemented by Ulrich Drepper.
747 * STT_GNU_IFUNC is now supported in static executables.
748 Implemented by H.J. Lu.
750 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
752 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
753 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
754 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
755 Contributed by H.J. Lu.
757 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
758 Implemented by Ulrich Drepper.
760 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
762 Contributed by H.J. Lu.
764 * Support for fma instruction in AVX on x86-64.
765 Implemented by H.J. Lu and Ulrich Drepper.
767 * AVX support in x86-64 auditing support in ld.so.
768 Implemented by H.J. Lu.
770 * STB_GNU_UNIQUE support added.
771 Implemented by Ulrich Drepper.
773 * Implement second fallback mode for optimized DNS lookup for even more
774 broken environments. If two requests from the same port are not
775 handled correctly close the socket and open a new one before sending
776 the second request. The 'single-request-reopen' option in /etc/resolv.conf
777 can be used to select this mode right away, instead of rediscovering the
778 necessity is every process again.
779 Implemented by Ulrich Drepper.
781 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
782 Implemented by Adam Tkac.
784 * Optimized iconv conversions for S390x.
785 Implemented by Andreas Krebbel.
787 * Using condvars with PI mutexes is now more efficient due to kernel
788 support for requeueing to PI futexes. NPTL support added for x86-64.
789 Implemented by Ulrich Drepper.
791 * New locales: ps_AF, my_MM
795 * The following bugs are resolved with this release:
797 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
798 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
799 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
800 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
801 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
803 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
804 Implemented by Ulrich Drepper.
806 * New Linux interfaces: accept4, fallocate, fallocate64.
807 Implemented by Ulrich Drepper.
809 * Correct declarations of string function when used in C++ code. This
810 could lead to compile errors for invalid C++ code.
812 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
815 * New POSIX 2008 interface: psiginfo
816 Implemented by Ulrich Drepper.
818 * New ISO C++1x interfaces: quick_exit, at_quick_exit
819 Implemented by Ulrich Drepper.
821 * Support for selecting between multiple function definitions at runtime
822 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
824 * The libcrypt library can now use the hash function implementations in
825 NSS. Implemented by Ulrich Drepper.
827 * The malloc implementation can be compiled to be less memory efficient
828 but higher performing in multi-threaded programs.
829 Implemented by Ulrich Drepper.
831 * New locales: nan_TW@latin, ks_IN
833 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
834 Implemented by Ulrich Drepper.
836 * Extended printf hook support. It is possible to use user-defined types
837 and extend existing format specifiers.
838 Implemented by Ulrich Drepper.
840 * Handling for group shadow files has been added.
841 Implemented by Ulrich Drepper.
843 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
844 servers (the case, e.g., for some people using the built-in DNS
845 server in ADSL modems/routers). There is a once-per-process timeout
846 in case of a broken server. To avoid it, users can run nscd or put
847 'options single-request' in /etc/resolv.conf.
848 Implemented by Ulrich Drepper.
852 * The following bugs are resolved with this release:
854 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
855 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
856 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
857 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
858 6968, 6974, 6980, 6995, 7008, 7009, 7029
860 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
861 up at the same time. Implemented by Ulrich Drepper.
863 * TLS descriptors for LD and GD on x86 and x86-64.
864 Implemented by Alexandre Oliva.
866 * getaddrinfo now handles DCCP and UDPlite.
867 Implemented by Ulrich Drepper.
869 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
870 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
871 Implemented by Ulrich Drepper.
873 * New implementation of memmem, strstr, and strcasestr which is O(n).
874 Implemented by Eric Blake.
876 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
878 * Implement "e" option for popen to open file descriptor with the
879 close-on-exec flag set. Implemented by Ulrich Drepper.
881 * Implement "b" mode for fmemopen. In this mode writes writes don't
882 implicitly add a NUL byte and seeks from the end of the buffer really
883 use the buffer end, not the string length as the basis.
884 Implemented by Ulrich Drepper.
886 * Many functions, exported and internal, now atomically set the close-on-exec
887 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
889 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
891 Implemented by Pravin Satpute.
893 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
897 * The following bugs are resolved with this release:
899 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
900 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
901 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
902 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
903 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
904 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
905 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
907 * New locales: bo_CN, bo_IN, shs_CA.
909 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
911 * Sorting rules for some Indian languages (Devanagari and Gujarati).
912 Implemented by Pravin Satpute.
914 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
916 * nscd caches now all timeouts for DNS entries
917 Implemented by Ulrich Drepper.
919 * nscd is more efficient and wakes up less often.
920 Implemented by Ulrich Drepper.
922 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
923 vdprintf, and obstack_vprintf.
924 Implemented by Jakub Jelinek.
926 * Faster memset for x86-64.
927 Implemented by Harsha Jagasia and H.J. Lu.
929 * Faster memcpy on x86.
930 Implemented by Ulrich Drepper.
932 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
933 Implemented by Ulrich Drepper.
935 * Faster sqrt and sqrtf implemention for some PPC variants.
936 Implemented by Steven Munroe.
940 * The following bugs are resolved with this release:
942 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
943 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
944 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
945 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
946 5071, 5103, 5104, 5112, 5113, 5184, 5186
948 * More checking functions: fread, fread_unlocked, open*, mq_open.
949 Implemented by Jakub Jelinek and Ulrich Drepper.
951 * Extend fortification to C++. Implemented by Jakub Jelinek.
953 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
954 by not recognizing 'a' as a modifier when those specs are requested.
955 Implemented by Jakub Jelinek.
957 * PPC optimizations to math and string functions.
958 Implemented by Steven Munroe.
960 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
961 options to be passed. Implemented by Ulrich Drepper.
963 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
965 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
966 Implemented by Ulrich Drepper.
968 * Handle private futexes in the NPTL implementation.
969 Implemented by Jakub Jelinek and Ulrich Drepper.
971 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
972 Implemented by Roland McGrath and Ulrich Drepper.
974 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
976 * SHA-256 and SHA-512 based password encryption.
977 Implemented by Ulrich Drepper.
979 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
980 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
983 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
984 Implemented by Ulrich Drepper.
988 * The following bugs are resolved with this release:
990 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
991 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
992 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
993 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
994 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
995 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
996 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
999 * New Linux interfaces: epoll_pwait, sched_getcpu.
1001 * New generic interfaces: strerror_l.
1003 * nscd can now cache the services database. Implemented by Ulrich Drepper.
1007 * The following bugs are resolved with this release:
1009 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
1010 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
1011 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
1012 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
1013 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
1014 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
1015 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
1016 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
1017 3225, 3251, 3252, 3253, 3273
1019 * For Linux, the sorting of addresses returned by getaddrinfo now also
1020 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
1021 Implemented by Ulrich Drepper.
1023 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
1024 Implemented by Ulrich Drepper.
1026 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
1028 * New iconv module for MIK. Contributed by Alexander Shopov.
1030 * For sites with broken group and/or passwd database, the auto-propagate
1031 option of nscd can prevent creating ID lookup entries from the results
1032 of a name lookup and vice versa. This usually is no problem but some
1033 site might have problems with the default behavior.
1034 Implemented by Ulrich Drepper.
1036 * Iterating over entire database in NIS can be slow. With the
1037 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
1038 to trade time for memory. The entire database will be read at once.
1039 Implemented by Ulrich Drepper.
1041 * The interfaces introduced in RFC 3542 have been implemented by
1044 * Support for the new ELF hash table format was added by Ulrich Drepper.
1046 * Support for priority inheritance mutexes added by Jakub Jelinek and
1049 * Support for priority protected mutexes added by Jakub Jelinek.
1051 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1052 or_IN, csb_PL, fy_NL, sr_ME.
1056 * More overflow detection functions.
1058 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1059 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1061 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1062 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1063 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1064 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1065 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1066 by Masahide Washizawa.
1068 * It is now possible to install audit libraries for the dynamic linker using
1069 LD_AUDIT. Implemented by Ulrich Drepper.
1071 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1072 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1073 For a libc and libpthread that works well on Linux 2.4 kernels, we
1074 recommend using the stable 2.3 branch.
1076 * The new function open_wmemstream acts like open_memstream,
1077 but uses a wchar_t wide character buffer.
1079 * The new function ppoll is an improved version of poll, similar to pselect.
1081 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1082 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1083 renameat, unlinkat, linkat, symlinkat, readlinkat.
1085 * New Linux kernel system calls: unshare,
1086 inotify_init, inotify_add_watch, inotify_rm_watch.
1088 * The euidaccess function is now also known by the alias eaccess,
1089 for compatibility with some other systems.
1091 * Timezone data updated to 2006b version.
1095 * The following bugs are resolved with this release:
1097 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1098 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1099 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1100 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1101 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1102 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1104 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1106 * As of this release, GCC 4 can be used to compile the C Library.
1108 * Timezone data updated to 2005m version.
1112 * The following bugs are resolved with this release:
1114 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1115 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1116 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1117 777, 787, 821, 822, 823, 825
1119 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1123 * Support for RFC 3678. Real implementations exist only for Linux so far.
1124 Implemented by Ulrich Drepper.
1126 * nscd can now cache entries persistently. Expiring entries are reloaded.
1127 For speedups the cache can be shared in memory with client processes.
1128 Implemented by Ulrich Drepper.
1130 * nscd can now perform SELinux checks.
1131 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1133 * getaddrinfo queries are now cached. Canonical name lookup is performed
1135 Implemented by Ulrich Drepper.
1137 * The nothrow function attribute is used when headers are used by gcc when
1138 compiling C code. This can avoid significant amounts of exception
1141 * The malloc functions perform more error checking and are stricter when
1142 it comes to reacting on errors. The default action is to terminate
1143 the process after showing an error message. Implemented by Ulrich Drepper.
1145 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1146 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1148 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1149 namespaces using the new function dlmopen(). This feature is of course,
1150 like most other dynamic loading functionality, not available in statically
1151 linked applications. Implemented by Ulrich Drepper.
1153 * Low-overhead boundary checking variants of string and some stdio functions
1154 were added. These are to be used in conjunction with a gcc patch by
1155 Jakub Jelinek which adds calls to these functions if possible.
1156 Implemented by Jakub Jelinek and Ulrich Drepper.
1158 * Old code for several operating systems and machine architectures that
1159 have not been in working condition in a long time have been removed from
1160 the main source tree maintained by the GNU C Library's maintainers.
1161 These files are now reside in the separate `ports' source module
1162 that is usable as an add-on when building the library.
1166 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1167 interrogate the dynamic linker, compatible with the Solaris interface.
1169 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1170 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1172 * getifaddrs now uses the netlink interface on Linux to get its information.
1173 Implemented by Thorsten Kukuk.
1175 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1176 Implemented by Ulrich Drepper.
1178 * support for non-executable stacks on x86 has been added. Changes mostly
1181 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1184 * getaddrinfo now performs destination address selection according to
1189 * Thread-safe interfaces for many functions that access locale data
1190 were added in version 2.3, but these features were omitted from NEWS.
1191 Many functions have variants with an `_l' suffix that take a `locale_t'
1192 object as a parameter rather than consulting the current locale.
1193 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1194 create and maintain `locale_t' objects. Additionally, the new function
1195 `uselocale' sets "the current locale" (as used by functions not so
1196 parameterized) set for an individual thread. These features were added
1197 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1199 * The functions getresuid, getresgid, setresuid, and setresgid, which
1200 have long been available on Linux, are now declared in <unistd.h>
1201 and are now also available on the Hurd.
1203 * ELF thread-local storage support (TLS) now works on x86-64.
1205 * The new dynamic string token $LIB is expanded in shared library names.
1206 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1208 * Aldy Hernandez contributed complete software floating point support for
1209 PowerPC machines with no FPU.
1211 * fexecve is implemented on Linux.
1213 * The `btowc' function should work at least twice as fast due to
1214 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1216 * With approriate thread add-ons cancelable functions are now implemented
1217 in libc.so as well. No need to call the function in libpthread. This
1218 change allowed to finally disable the incorrect and expensive handling
1219 of weak definition in ld.so.
1221 * Yet more PLT entries in libc.so have been removed. We finally arrived
1222 at the bare minimum. Startup times improved appropriately.
1224 * Support for the new Linux/x86 system call interface was added. The
1225 AT_SYSINFO auxiliary vector entry is recognized and handled.
1229 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1232 * iconv (the program and the interface) now accepts empty names (excluding
1233 options like //TRANSLIT) to mean "use charset of current locale".
1235 * localedef can now transliterate characters in strings which are not in
1236 the provided charmap. The information from the input locale is used.
1238 * Prelinking support was added for ELF targets. This requires additional
1239 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1241 * Read-only stdio streams now use mmap to speed up operation by eliminating
1242 copying and buffer underflows. To use add 'm' to the mode string of
1243 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1245 * The malloc functions were completely rewritten by Wolfram Gloger based
1246 on Doug Lea's malloc-2.7.0.c.
1248 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1249 implementation of regex.
1251 * Bruno Haible upgraded the iconv and locale implementation to support
1254 * Contents of the LC_* and LANG environment variables in the CEN style are
1255 not recognized anymore. It never was used. Change by Ulrich Drepper.
1257 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1258 thread-local storage (TLS) ABI on some platforms.
1259 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1261 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1262 EUC-JISX0213, and TSCII.
1264 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1265 BSD-compatible interface for getting all network interface addresses.
1266 Implementation for IPv4 by Roland McGrath.
1268 * Loading of locale data is faster due to the introduction of a locale
1269 archive. Implemented by Roland McGrath and Ulrich Drepper.
1271 * Startup times are significantly reduced by not using exported functions
1272 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1275 * Steven Munroe contributed a port to PowerPC64/Linux.
1279 * The Hurd now uses the GNU libio implementation of stdio rather than the
1280 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1282 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1283 with the same behavior as the Linux system call of the same name.
1287 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1288 128-bit long double format.
1290 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1291 IBM1161, and IBM1162 charsets.
1293 * Andreas Jaeger contributed a port to x86-64/Linux.
1295 * Peter Bruin contributed a port to PowerPC/Hurd.
1297 * libc functions using I/O streams now can handle wide-oriented streams
1300 * optimizations in the dynamic linker. Binaries created by recent binutils
1301 versions start up quicker due to reduced time spent on relocations.
1303 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1307 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1308 asinh, atanh, j0 for the 128-bit long double format.
1310 * Bruno Haible updated all the code handling Unicode in some form to
1311 support Unicode 3.1.
1313 * Speed of regex for single-byte locales is back to previous levels.
1314 Patch by Isamu Hasegawa.
1316 * Alpha, SPARC, and IA-64 now also using floating stacks.
1318 * Startup time of internationalized applications greatly improved through
1319 iconv cache. Use iconvconfig to generate the cache file.
1320 Contributed by Ulrich Drepper.
1322 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1323 severe performance problems. Patch by David Mosberger.
1325 * The Hurd port got a lot more functionality like AIO, various stdio
1326 extensions, etc. Mainly done by Roland McGrath.
1328 * mtrace can now lookup symbols in shared libraries.
1332 * Intel's IA-64 math library is largely integrated. It provides fast and
1333 accurate implementatations for most basic and standard math functions
1334 in float, double, and long double format.
1336 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1337 and asin for the 96-bit long double format and asin, log, tan for the
1338 128-bit long double format.
1340 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1341 The basic double functions exist today. Contributed by Abraham Ziv
1342 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1343 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1345 * An asynchronous name lookup library was added. The interface is designed
1346 after POSIX AIO. The proposal was circulated beforehand to get comments.
1347 No negative ones came in. Implemented by Ulrich Drepper.
1349 * Port to S390/64bit contributed by Martin Schwidefsky
1350 <schwidefsky@de.ibm.com>.
1352 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1353 of functions for Linux/IA-64.
1355 * The RPC code is now thread safe. Threads can now use the same service
1356 of different services at the same time. Patch by Eric Norum
1357 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1359 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1360 family of functions for Linux/S390.
1362 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1363 of functions for Linux/x86.
1365 * Port to Linux/CRIS contributed by Axis Communications.
1369 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1370 we can now check for namespace violations and missing declarations. The
1371 result is that almost all headers are now Unix-compliant (as defined in
1372 the upcoming XPG6). The negative side is that some programs might need
1373 corrections, too, if they depend on the incorrect form of the headers in
1374 previous versions which defined too many symbols and included too many
1377 * regex now handles multibyte character sets correctly.
1378 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1380 * iconv (the program) does now conform to the upcoming XPG6 and handles
1381 charmaps. Instead of the charset names the path of charmaps can be
1382 provided and the conversion happens based on this data.
1383 Contributed by Ulrich Drepper.
1385 * The locale program now provides detailed information about the installed
1390 only lists the names of the supported locales
1394 provides details such as country, language, and codeset name.
1395 Contributed by Ulrich Drepper.
1399 * The gencat program now parses the input file according to the charset
1400 selected by the LC_CTYPE category. This is important for stateful
1401 character sets. To make generating catalogs easier there is a way
1402 to overwrite the charset selected by the locale: before the first
1403 message or $ quote line the catalog can contain a line like
1405 $ codeset=ISO-8859-2
1407 to select the charset (ISO-8859-2 in this case).
1409 Implemented by Shinya Hanataka and Ulrich Drepper.
1411 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1412 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1413 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1415 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1416 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1418 * The LANGUAGE environment variable is now ignored unless the locale is
1419 changed from the default "C" locale.
1421 * The usual bug fixes.
1425 * Greg McGary added runtime support for bounds checking using gcc's
1426 new -fbounded-pointers option. ix86 target is complete. PowerPC
1429 * Thorsten Kukuk added secure mode support to nscd.
1431 * The Berkeley db libraries have been removed.
1433 Related, the nss_db module is now in a separate package since it
1434 obviously requires a database library being available.
1436 * Wide character I/O streams implemented by Ulrich Drepper.
1438 * Functions from the extended socket API added by Ulrich Drepper.
1440 * Functions feenableexcept and fedisableexcept to control the
1441 behaviour of individual exceptions have been added by Andreas Jaeger.
1443 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1445 * The resolver code has been updated from bind 8.2.3-T5B which supports
1446 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1449 This change could in some situations effect backward compatibility. Since
1450 now `_res' is a thread-local instead of a global variable, modifying it
1451 in one thread does not have any effect in other threads.
1453 The resolver library was also extended to allow IPv6 as the transport
1454 protocol for the requests. This work was done by Stig Venaas.
1456 * Compatibility code for K&R C compilers has been removed from the
1457 header files. A ISO C compiler is needed to use the library
1458 (conforming to either C89 or C99 standard).
1460 * Complete rewrite of the localedef program to support multibyte character
1461 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1462 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1463 Implemented by Ulrich Drepper.
1465 Bruno Haible significantly improved the generation and use of the data
1466 structures for the wide character tables.
1468 * Plural handling in gettext implemented by Ulrich Drepper.
1470 * The utmp daemon has been removed.
1472 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1474 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1477 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1479 * POSIX barriers implemented by Kaz Kylheku.
1481 * POSIX spawn function family implemented by Ulrich Drepper.
1483 * POSIX spinlocks are now available.
1485 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1487 * the configure option --enable-kernel=X.Y.Z allows to strip out
1488 compatibility for kernel versions before X.Y.Z. This is currently only
1489 implemented for Linux.
1491 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1492 field sin6_scope_id. This means that all programs using IPv6 should be
1493 recompiled. Don't expect binary compatibility with previous glibc
1496 * various conversion modules for IBM character sets contributed by
1499 * IA-64 port by Jes Sorensen and HJ Lu.
1513 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1515 * New xdr functions are added; some rpc functions are now 64bit clean.
1517 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1519 * Fixed known incompatibilities with glibc 2.0.
1521 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1523 * Optimized a number of functions (especially the ELF dynamic loader).
1525 * Update timezone data files.
1527 * lots of charmaps corrections
1529 * some new locale definitions and charmaps
1534 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1535 conform to POSIX member type requirements. Symbol versions have been
1536 adjusted as needed within the library, and for direct use by applications,
1537 but there is potential for problems if third-party libraries use
1538 struct timeval as part of their interface. This does not present
1539 a problem for X and other "essential" system libraries.
1541 * An additional locale model to support C++ Standard Library locale
1542 model and probably more was implemented by Ulrich Drepper.
1544 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1547 * Miles Bader provided the `argp' function family to support hierachical
1548 command line argument parsing, layered on top of getopt.
1550 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1552 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1555 * scanf recognizes the %a and %A format for scanning floating point numbers.
1557 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1558 information and interfaces for the available integer types.
1560 * about 130 new math functions were added to implement the ISO C9x math
1563 * the new header <complex.h> contains definitions of the complex math
1564 functions from ISO C 9X.
1566 * the new header <tgmath.h> defines generic macros to use complex or
1567 real valued functions.
1569 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1571 * Andreas Jaeger provided a test suite for the math library.
1573 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1575 * Ulrich Drepper added character set conversion functions (iconv).
1577 * Optimized string functions have been added.
1579 * The localedata addon is now part of glibc.
1581 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1583 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1584 daemon for NSS (nscd).
1586 Missing a better place here are some numbers on improvements. Under
1587 Linux 2.1.125 un-tar-ing the kernel sources takes
1591 using local files 12.19s 6.88s 22.91s
1593 using NIS 13.92s 8.91s 26.34s
1595 using NIS & nscd 10.37s 7.34s 25.30s
1597 using NIS+ 27.57s 30.37s 640.46s
1599 using NIS+ & nscd 10.25s 7.83s 26.51s
1601 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1603 Keep in mind that non-namelookup related operations dominate above times.
1604 It was just a common complain that using NIS+ unpacking the kernel is
1607 [1] The old nscd implementation is not available anymore since it was
1608 distributed with glibc up to version 2.0.98 and thus is now replaced.
1610 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1612 * Mark Kettenis provided a Hesiod NSS module.
1614 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1615 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1617 * rcmd can now handle netgroups (Dick Streefland).
1619 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1622 * Support for the IPv6 protocol has been added to the socket API, as per the
1623 latest draft standards.
1625 * Support for Linux 2.2 has been added.
1627 * Interface changes relative to the latest 2.0.x release:
1628 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1629 addseverity NEW: Unix98
1630 alphasort64 NEW: LFS
1631 argp_err_exit_status NEW: argp, GNU ext
1632 argp_error NEW: argp, GNU ext
1633 argp_failure NEW: argp, GNU ext
1634 argp_help NEW: argp, GNU ext
1635 argp_parse NEW: argp, GNU ext
1636 argp_program_bug_address NEW: argp, GNU ext
1637 argp_program_version NEW: argp, GNU ext
1638 argp_program_version_hook NEW: argp, GNU ext
1639 argp_state_help NEW: argp, GNU ext
1640 argp_usage NEW: argp, GNU ext
1641 authdes_create NEW: Secure RPC
1642 authdes_getucred NEW: Secure RPC
1643 authdes_pk_create NEW: Secure RPC
1644 backtrace NEW: GNU ext.
1645 backtrace_symbols NEW: GNU ext.
1646 backtrace_symbols_fd NEW: GNU ext.
1648 cacosf NEW: ISO C 9x
1649 cacosh NEW: ISO C 9x
1650 cacoshf NEW: ISO C 9x
1651 cacoshl NEW: ISO C 9x
1652 cacosl NEW: ISO C 9x
1659 casinf NEW: ISO C 9x
1660 casinh NEW: ISO C 9x
1661 casinhf NEW: ISO C 9x
1662 casinhl NEW: ISO C 9x
1663 casinl NEW: ISO C 9x
1665 catanf NEW: ISO C 9x
1666 catanh NEW: ISO C 9x
1667 catanhf NEW: ISO C 9x
1668 catanhl NEW: ISO C 9x
1669 catanl NEW: ISO C 9x
1670 cbc_crypt NEW: Secure RPC
1674 ccoshf NEW: ISO C 9x
1675 ccoshl NEW: ISO C 9x
1681 cimagf NEW: ISO C 9x
1682 cimagl NEW: ISO C 9x
1683 clearerr_locked REMOVED
1684 clntunix_create NEW: sunrpc ext
1686 clog10 NEW: ISO C 9x
1687 clog10f NEW: ISO C 9x
1688 clog10l NEW: ISO C 9x
1698 cprojf NEW: ISO C 9x
1699 cprojl NEW: ISO C 9x
1701 crealf NEW: ISO C 9x
1702 creall NEW: ISO C 9x
1707 csinhf NEW: ISO C 9x
1708 csinhl NEW: ISO C 9x
1711 csqrtf NEW: ISO C 9x
1712 csqrtl NEW: ISO C 9x
1716 ctanhf NEW: ISO C 9x
1717 ctanhl NEW: ISO C 9x
1719 des_setparity NEW: Secure RPC
1720 ecb_crypt NEW: Secure RPC
1721 endutxent NEW: Unix98
1723 exp10f NEW: ISO C 9x
1724 exp10l NEW: ISO C 9x
1728 fattach NEW: STREAMS
1729 fdetach NEW: STREAMS
1733 feclearexcept NEW: ISO C 9x
1734 fegetenv NEW: ISO C 9x
1735 fegetexceptflag NEW: ISO C 9x
1736 fegetround NEW: ISO C 9x
1737 feholdexcept NEW: ISO C 9x
1739 feraiseexcept NEW: ISO C 9x
1740 ferror_locked REMOVED
1741 fesetenv NEW: ISO C 9x
1742 fesetexceptflag NEW: ISO C 9x
1743 fesetround NEW: ISO C 9x
1744 fetestexcept NEW: ISO C 9x
1745 feupdateenv NEW: ISO C 9x
1746 fflush_locked REMOVED
1750 fgets_unlocked NEW: GNU ext.
1751 fileno_locked REMOVED
1763 fputc_locked REMOVED
1764 fputs_unlocked NEW: GNU ext.
1765 fread_unlocked NEW: GNU ext.
1770 fstatvfs NEW: Unix98
1774 ftruncate64 NEW: LFS
1776 fwrite_unlocked NEW: GNU ext.
1777 gai_strerror NEW: IPv6
1781 getchar_locked REMOVED
1783 getdate_err NEW: Unix98
1784 getdate_r NEW: GNU ext.
1786 getnameinfo NEW: IPv6
1787 getnetname NEW: Secure RPC
1788 getpmsg NEW: STREAMS
1789 getpt NEW: Unix98 PTY
1790 getrlimit64 NEW: LFS
1791 getutxent NEW: Unix98
1792 getutxid NEW: Unix98
1793 getutxline NEW: Unix98
1794 glob64 NEW: GNU ext.
1795 globfree64 NEW: GNU ext.
1796 gnu_get_libc_release NEW: GNU ext.
1797 gnu_get_libc_version NEW: GNU ext.
1798 grantpt NEW: Unix98 PTY
1799 host2netname NEW: Secure RPC
1801 iconv_close NEW: iconv
1802 iconv_open NEW: iconv
1803 if_freenameindex NEW: IPv6
1804 if_indextoname NEW: IPv6
1805 if_nameindex NEW: IPv6
1806 if_nametoindex NEW: IPv6
1807 in6addr_any NEW: IPv6
1808 in6addr_loopback NEW: IPv6
1809 inet6_isipv4mapped NEW: IPv6
1810 isastream NEW: STREAMS
1811 iswblank NEW: GNU ext.
1812 key_decryptsession NEW: Secure RPC
1813 key_decryptsession_pk NEW: Secure RPC
1814 key_encryptsession NEW: Secure RPC
1815 key_encryptsession_pk NEW: Secure RPC
1816 key_gendes NEW: Secure RPC
1817 key_get_conv NEW: Secure RPC
1818 key_secretkey_is_set NEW: Secure RPC
1819 key_setnet NEW: Secure RPC
1820 key_setsecret NEW: Secure RPC
1821 llrint NEW: ISO C 9x
1822 llrintf NEW: ISO C 9x
1823 llrintl NEW: ISO C 9x
1824 llround NEW: ISO C 9x
1825 llroundf NEW: ISO C 9x
1826 llroundl NEW: ISO C 9x
1831 lrintf NEW: ISO C 9x
1832 lrintl NEW: ISO C 9x
1833 lround NEW: ISO C 9x
1834 lroundf NEW: ISO C 9x
1835 lroundl NEW: ISO C 9x
1837 makecontext NEW: Unix98
1838 mempcpy NEW: GNU ext.
1841 modify_ldt NEW: kernel
1845 nearbyint NEW: ISO C 9x
1846 nearbyintf NEW: ISO C 9x
1847 nearbyintl NEW: ISO C 9x
1848 netname2host NEW: Secure RPC
1849 netname2user NEW: Secure RPC
1850 nexttoward NEW: ISO C 9x
1851 nexttowardf NEW: ISO C 9x
1852 nexttowardl NEW: ISO C 9x
1856 passwd2des NEW: Secure RPC
1858 pow10f NEW: GNU ext.
1859 pow10l NEW: GNU ext.
1862 printf_size NEW: GNU ext.
1863 printf_size_info NEW: GNU ext.
1864 profil_counter REMOVED
1865 pthread_mutexattr_getkind_np REPLACED
1866 pthread_mutexattr_setkind_np REPLACED
1867 ptsname NEW: Unix98 PTY
1868 ptsname_r NEW: Unix98 PTY
1870 putchar_locked REMOVED
1871 putgrent NEW: GNU ext.
1873 putpmsg NEW: STREAMS
1874 pututxline NEW: Unix98
1878 readdir64_r NEW: LFS
1879 remquo NEW: ISO C 9x
1880 remquof NEW: ISO C 9x
1881 remquol NEW: ISO C 9x
1883 roundf NEW: ISO C 9x
1884 roundl NEW: ISO C 9x
1886 scalbln NEW: ISO C 9x
1887 scalblnf NEW: ISO C 9x
1888 scalblnl NEW: ISO C 9x
1890 sendfile NEW: kernel
1891 setcontext NEW: Unix98
1892 setrlimit64 NEW: LFS
1893 setutxent NEW: Unix98
1895 sigignore NEW: Unix98
1896 sigqueue NEW: POSIX.1b
1897 sigrelse NEW: Unix98
1898 sigset NEW: POSIX.1b
1899 sigtimedwait NEW: POSIX.1b
1900 sigwaitinfo NEW: POSIX.1b
1901 sincos NEW: GNU ext.
1902 sincosf NEW: GNU ext.
1903 sincosl NEW: GNU ext.
1907 strcasestr NEW: GNU ext.
1908 strtoimax NEW: ISO C 9x
1909 strtoumax NEW: ISO C 9x
1910 strverscmp NEW: GNU ext.
1911 svcauthdes_stats NEW: Secure RPC
1912 svcunix_create NEW: sunrpc etx
1913 svcunixfd_create NEW: sunrpc ext
1914 swapcontext NEW: Unix98
1915 tcgetsid NEW: Unix98 PTY
1916 tdestroy NEW: GNU ext.
1917 tgamma NEW: ISO C 9x
1918 tgammaf NEW: ISO C 9x
1919 tgammal NEW: ISO C 9x
1923 truncf NEW: ISO C 9x
1924 truncl NEW: ISO C 9x
1926 unlockpt NEW: Unix98 PTY
1927 updwtmpx NEW: Unix98
1928 user2netname NEW: Secure RPC
1929 utmpxname NEW: Unix98
1930 versionsort NEW: GNU ext.
1931 versionsort64 NEW: GNU ext.
1933 wcscasecmp NEW: GNU ext.
1934 wcsncasecmp NEW: GNU ext.
1935 wcsnlen NEW: GNU ext.
1936 wcstoimax NEW: ISO C 9x
1937 wcstoll NEW: ISO C 9x
1938 wcstoull NEW: ISO C 9x
1939 wcstoumax NEW: ISO C 9x
1941 wordexp NEW: POSIX.2
1942 wordfree NEW: POSIX.2
1943 write_profiling REMOVED
1944 xdecrypt NEW: Secure RPC
1945 xdr_authdes_cred NEW: Secure RPC
1946 xdr_authdes_verf NEW: Secure RPC
1947 xdr_cryptkeyarg NEW: Secure RPC
1948 xdr_cryptkeyarg2 NEW: Secure RPC
1949 xdr_cryptkeyres NEW: Secure RPC
1950 xdr_getcredres NEW: Secure RPC
1951 xdr_key_netstarg NEW: Secure RPC
1952 xdr_key_netstres NEW: Secure RPC
1953 xdr_keybuf NEW: Secure RPC
1954 xdr_keystatus NEW: Secure RPC
1955 xdr_netnamestr NEW: Secure RPC
1956 xdr_sizeof NEW: Secure RPC
1957 xdr_unixcred NEW: sunrpc ext
1958 xencrypt NEW: Secure RPC
1959 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1970 * inet_ntoa is thread-safe
1972 * updwtmp is moved from libutil to libc
1974 * rewrite of cbrt function
1976 * update of timezone data
1990 * add atoll function
1992 * fix complex problems in Berkeley DB code
1994 * fix math functions
1998 * fixed lots of header problems (especially Linux/GNU specific)
2000 * dynamic loader preserves all registers
2002 * Roland McGrath provided support for handling of auxiliary objects in
2003 the ELF dynamic loader.
2005 * support for parallel builds is improved
2009 * GNU extensions are no longer declared by default. To enable them you
2010 must define the macro `_GNU_SOURCE' in your program or compile with
2013 * The library has changed from using GNU ld symbol aliases to using weak
2014 symbols where available. The ELF object file format supports weak
2015 symbols; GNU ld also supports weak symbols in the a.out format. (There
2016 is also now support for other GNU ld extensions in ELF. Use the
2017 `--with-elf' option to configure to indicate you have ELF, and
2018 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
2019 of many files which contained only symbol aliases, reducing the size of
2020 the source and the compiled library; many other files were renamed to
2021 less cryptic names previously occupied by the symbol alias files.
2022 There is a new header file <elf.h> for programs which operate on
2023 files in the ELF format.
2025 * Converted to Autoconf version 2, so `configure' has more options.
2026 Run `configure --help' to see the details.
2028 * The library can now be configured to build profiling, highly-optimized
2029 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
2030 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
2031 `configure' enable building these extra libraries. The shared library is
2032 built by default when using both ELF and GNU ld. When shared libraries
2033 are enabled, the new library `-ldl' is available for arbitrary run-time
2034 loading of shared objects; its interface is defined in <dlfcn.h>. The
2035 new header file <link.h> gives access to the internals of the run-time
2036 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
2037 application of same name on other systems and it provides information
2038 about dynamically linked binaries.
2040 * The C library now provides the run-time support code for profiling
2041 executables compiled with `-pg'. Programs can control the profiling code
2042 through the interface in <sys/gmon.h>. The `gmon.out' files written by
2043 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
2044 the support for this file format was contributed by David Mosberger-Tang.
2046 * The math code has been replaced with a math library based on fdlibm from
2047 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
2048 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
2049 functions. The math functions now reside in a separate library, so
2050 programs using them will need to use `-lm' their linking commands.
2052 * John C. Bowman contributed optimized ix87 assembler inline functions.
2054 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2055 mechanism similar to that found in Solaris 2. This is now used for the
2056 group, passwd, hosts, networks, services, protocols, rpc, ethers,
2057 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
2058 file controls what services are used for each individual database. This
2059 works by loading shared libraries with names specified in `nsswitch.conf',
2060 so service modules can be changed or added at any time without even
2061 relinking any program. Currently there are the file, db, and NIS based
2062 NSS services available.
2064 * The new functions `strtoq' and `strtouq' parse integer values from
2065 strings, like `strtol' and `strtoul', but they return `long long int' and
2066 `unsigned long long int' values, respectively (64-bit quantities).
2068 * The new functions `strtof' and `strtold' parse floating-point values from
2069 strings, like `strtod', but they return `float' and `long double' values,
2070 respectively (on some machines `double' and `long double' are the same).
2072 * Ulrich Drepper has contributed new implementations of the floating-point
2073 printing and reading code used in the `printf' family of functions and
2074 `strtod', `strtof', and `strtold'. These new functions are perfectly
2075 accurate, and much faster than the old ones.
2077 * The implementation of the POSIX locale model was completely rewritten by
2078 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2079 to compile the POSIX locale definition.
2081 * The former dummy implementations of the strcoll and strxfrm function are
2082 now replaced by fully functional code contributed by Ulrich Drepper. The
2083 collation information comes from the POSIX locale definitions.
2085 * The new header <langinfo.h> defines an interface for accessing
2086 various locale-dependent data (using the locale chosen with `setlocale').
2088 * Ulrich Drepper has contributed a new suite of functions for operation on
2089 wide-character and multibyte-character strings, in <wchar.h>;
2090 and classification and case conversion of wide characters, in <wctype.h>.
2091 These new functions are conforming to the ISO C, Amendement 1 specification.
2093 * There is now a second implementation of the standard I/O library available.
2094 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2095 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2097 * You can now use positional parameter specifications in format strings
2098 for the `printf' and `scanf' families of functions. For example,
2099 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2100 ``Number 6, Mr Jones''. This is mainly useful when providing different
2101 format strings for different languages, whose grammars may dictate
2102 different orderings of the values being printed. To support this
2103 feature, the interface for `register_printf_handler' has changed; see
2104 the header file <printf.h> for details.
2106 * The `printf' and `scanf' families of functions now understand a new
2107 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2108 to group numbers as indicated by the locale; for `scanf' and friends, this
2109 says to accept as valid only a number with all the proper grouping
2110 separators in the right places. In the default "C" locale, numbers are
2111 not grouped; but locales for specific countries will define the usual
2112 conventions (i.e. separate thousands with `,' in the US locale).
2114 * The pgrp functions have been regularized, slightly incompatibly but much
2115 less confusingly. The core functions are now `getpgid' and `setpgid',
2116 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2117 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2118 provided for compatibility. There is no longer an incompatible `getpgrp'
2119 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2121 * The new header file <fts.h> and suite of functions simplify programs that
2122 operate on directory trees. This code comes from 4.4 BSD.
2124 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2125 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2126 NSS scheme used in glibc.
2128 * There is a new malloc debugging hook `__memalign_hook'.
2130 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2131 `unsigned int' in <sys/types.h>. These are for compatibility only and
2132 their use is discouraged.
2134 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2135 done differently, so that it works even without GNU ld.
2137 * New function `euidaccess' checks allowed access to a file like `access',
2138 but using the effective IDs instead of the real IDs.
2140 * The time zone data files have been updated for the latest and greatest
2141 local time conventions of the countries of the world.
2143 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2146 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2147 for formatting floating-point numbers. They are provided only for
2148 compatibility; new programs should use `sprintf' instead. There are
2149 also equivalent function for the `long double' floating-point type and
2150 all functions also exist in a reentrant form.
2152 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2153 functions for maintaining the login-record files (primarily of use to
2154 system programs such as `login'), and convenient functions for
2155 allocating and initializing a pseudo-terminal (pty) device.
2157 * Ulrich Drepper has contributed new support for System V style
2158 shared memory and IPC on systems that support it.
2160 * Ulrich Drepper has contributed several miscellaneous new functions found
2161 in System V: The `hsearch' family of functions provide an effective
2162 implementation of hash tables; `a64l' and `l64a' provide a very simple
2163 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2166 * Ulrich Drepper has contributed new reentrant counterparts for the
2167 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2169 * Ulrich Drepper has contributed new, highly-optimized versions of several
2170 string functions for the i486/Pentium family of processors.
2172 * Ulrich Drepper has updated the Linux-specific code, based largely
2173 on work done in Hongjiu Lu's version of GNU libc for Linux.
2174 The GNU library now supports Linux versions 2.0.10 and later,
2175 using the ELF object file format (i[3456]86-*-linux).
2177 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2179 * David Mosberger-Tang and Richard Henderson have ported the C library
2180 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2181 dynamic linking support for ELF/Alpha.
2183 * Richard Henderson contributed several Alpha optimized assembler function
2184 for arithmetic and string handling.
2186 * Ulrich Drepper has contributed a new set of message catalog functions to
2187 support multiple languages using the <libintl.h> interface, for use with
2188 his new package GNU gettext. Translation volunteers have contributed
2189 catalogs of the library's messages in Spanish, German, and Korean.
2191 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2192 program and the `catgets' function for reading the catalog files it
2193 creates. (The <libintl.h> interface is preferred; we include the
2194 <nl_types.h> interface using `catgets' only for source compatibility with
2195 programs already written to use it.)
2197 * New header file <values.h> gives SVID-compatible names for <limits.h>
2200 * Various new macros, declarations, and small header files for compatibility
2203 * New function `group_member' is a convenient way to check if a process has
2204 a given effective group ID.
2206 * When using GCC 2.7 and later, the socket functions are now declared in a
2207 special way so that passing an argument of type `struct sockaddr_in *',
2208 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2209 `struct sockaddr *' type, does not generate a type-clash warning.
2211 * New function `error' declared in header file <error.h> is a convenient
2212 function for printing error messages and optionally exiting; this is the
2213 canonical function used in GNU programs. The new functions `err', `warn',
2214 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2215 doing the same thing.
2217 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2218 POSIX.2 `glob' function to do ~ and {...} expansion.
2220 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2221 `clearenv' which is used in POSIX.9 is also available.
2223 * New function `getsid' returns session ID number on systems that support it.
2225 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2226 files <db.h> and <mpool.h> provide a rich set of functions for several
2227 types of simple databases stored in memory and in files, and <ndbm.h> is
2228 an old `ndbm'-compatible interface using the `db' functions. Link with
2229 `-ldb' to get these functions.
2231 * New macro `strdupa' copies a string like `strdup', but uses local stack
2232 space from `alloca' instead of dynamic heap space from `malloc'.
2234 * New function `strnlen' is like `strlen' but searches only a given maximum
2235 number of characters for the null terminator. `stpncpy', `strndup' and
2236 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2239 * New function `statfs' in header <sys/statfs.h>.
2241 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2242 provide convenient functions for operating on blocks of null-terminated
2245 * A new suite of functions in <utmp.h> handle all the details of reading
2246 and writing the utmp file.
2248 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2251 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2252 completely POSIX compliant and also implemented the extended functionality
2253 to handle alternate digit representation and alternate era date formats.
2255 * Ulrich Drepper provided an implementation of the `strptime' function
2256 defined in XPG4.2 which transforms a string into a `struct tm' value.
2258 * Paul Eggert provided the tzselect shell script as part of the timezone
2259 code. The shell script makes it easy to select the correct timezone
2262 * The implementation of the malloc family of functions is completely replaced
2263 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2264 The implementation uses the mmap function (if available) and it is
2265 optimized for the use in multi threaded programs.
2267 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2268 functions. This new functionality is usable by specifying a special
2269 salt string and it is compatible with implementation on *BSD systems.
2271 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2272 `getsubopt' to handle second level command line options, `bsd_signal'
2273 to access BSD style `signal' functionality, the obsolete `regexp' style
2276 * the `lchown' function is available on system which support this
2279 * The implementation of the shadow password handling function was contributed
2282 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2284 * POSIX.1g support was added. The <sys/select.h> header is available,
2285 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2286 implementation of `getaddrinfo'.
2290 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2292 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2293 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2295 * The new function `daemon' from 4.4 BSD is useful for server programs that
2296 want to put themselves in the background.
2298 * Joel Sherrill has contributed support for several standalone boards that
2299 run without an operating system.
2301 * `printf', `scanf' and friends now accept a `q' type modifier for long
2302 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2304 * All of the code taken from BSD (notably most of the math and networking
2305 routines) has been updated from the BSD 4.4-Lite release.
2307 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2309 * The new functions `getdomainname' and `setdomainname' fetch or change the
2310 YP/NIS domain name. These are system calls which exist on systems which
2313 * The time zone data files have been updated for the latest international
2316 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2317 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2321 * The C library now includes support for Sun RPC, from Sun's free
2322 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2323 are included. (There is still no support for YP.)
2325 * Tom Quinn has contributed a port of the C library to SGI machines running
2326 Irix 4 (mips-sgi-irix4).
2328 * The new `lockf' function is a simplified interface to the locking
2329 facilities of `fcntl', included for compatibility.
2331 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2333 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2335 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2338 * The error message printed by `assert' for a failed assertion now includes
2339 the name of the program (if using GNU ld) and the name of the calling
2340 function (with versions of GCC that support this).
2342 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2344 * The library now includes the <sys/mman.h> header file and memory
2345 management functions `mmap', `munmap', `mprotect', `msync', and
2346 `madvise', on systems that support those facilities.
2348 * The interface for `mcheck' has changed slightly: the function called to
2349 abort the program when an allocation inconsistency is detected now takes
2350 an argument that indicates the type of failure. The new function
2351 `mprobe' lets you request a consistency check for a particular block at
2352 any time (checks are normally done only when you call `free' or `realloc'
2355 * It is now possible to easily cross-compile the C library, building on one
2356 system a library to run on another machine and/or operating system. All
2357 you need to do is set the variable `HOST_CC' in `configparms' to the
2358 native compiler for programs to run on the machine you are building on (a
2359 few generator programs are used on Unix systems); set `CC' to the
2362 * The new function `fexecve' (only implemented on the GNU system) executes
2363 a program file given a file descriptor already open on the file.
2367 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2368 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2370 * You can set the variable `libprefix' in `configparms' to specify a prefix
2371 to be prepended to installed library files; this makes it easy to install
2372 the GNU C library to be linked as `-lgnuc' or whatever.
2374 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2375 copies a limited number of characters from a string, and returns the
2376 address of the last character written.
2378 * You no longer need to check for whether the installed `stddef.h' is
2379 compatible with the GNU C library. configure now checks for you.
2381 * You can now define a per-stream `fileno' function to convert the
2382 stream's cookie into an integral file descriptor.
2384 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2385 allocates zero bytes of storage, and returns a unique pointer which
2386 you can pass to `realloc' or `free'. The behavior is undefined if
2387 you dereference this pointer.
2389 * The C library now runs on Sony NEWS m68k machines running either
2390 NewsOS 3 or NewsOS 4.
2392 * The new `syscall' function is a system-dependent primitive function
2393 for invoking system calls. It has the canonical behavior on Unix
2394 systems, including unreliable return values for some calls (such as
2395 `pipe', `fork' and `getppid').
2397 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2398 to `EAGAIN', which is the preferred name. On systems whose kernels
2399 use two distinct codes, the C library now translates EWOULDBLOCK to
2400 EAGAIN in every system call function.
2404 * The GNU C Library Reference Manual is now distributed with the library.
2405 `make dvi' will produce a DVI file of the printed manual.
2406 `make info' will produce Info files that you can read on line using C-h i
2407 in Emacs or the `info' program.
2408 Please send comments on the manual to bug-glibc-manual@gnu.org.
2410 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2412 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2414 * Jason Merrill has contributed a port to the Sequent Symmetry running
2415 Dynix version 3 (i386-sequent-dynix).
2417 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2418 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2420 * New function `memory_warnings' lets you arrange to get warnings when
2421 malloc is running out of memory to allocate, like Emacs gives you.
2423 * The C library now contains the relocating allocator used in Emacs 19 for
2424 its editing buffers. This allocator (ralloc) minimizes allocation
2425 overhead and fragmentation by moving allocated regions around whenever it
2426 needs to. You always refer to a ralloc'd region with a "handle" (a
2427 pointer to a pointer--an object of type `void **').
2429 * There is a new `printf' format: `%m' gives you the string corresponding
2430 to the error code in `errno'.
2432 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2433 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2434 pass, the `a' modifier says to fill in a `char **' you pass with a
2437 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2438 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2439 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2441 * `mkstemp' is a traditional Unix function to atomically create and open a
2442 uniquely-named temporary file.
2446 * The standard location for the file that says what the local timezone is
2447 has changed again. It is now `/usr/local/etc/localtime' (or more
2448 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2450 * The distribution no longer contains any files with names longer than 14
2453 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2454 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2456 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2460 * The configuration process has changed quite a bit. The `configure'
2461 script is now used just like the configuration scripts for other GNU
2462 packages. The `sysdeps' directory hierarchy is much rearranged.
2463 The file `INSTALL' explains the new scheme in detail.
2465 * The header files no longer need to be processed into ANSI C and
2466 traditional C versions. There is just one set of files to install, and
2467 it will work with ANSI or old C compilers (including `gcc -traditional').
2469 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2470 MIPS DECStation running Ultrix 4.
2472 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2473 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2474 made itself into a shared library.
2476 * Yet further improved support for the i386, running 4.3 BSD-like systems
2477 (such as Mach 3 with the Unix single-server), or System V.
2479 * New function `strncasecmp' to do case-insensitive string comparison
2480 with limited length.
2482 * New function `strsep' is a reentrant alternative to `strtok'.
2484 * New functions `scandir' and `alphasort' for searching directories.
2486 * New function `setenv' is a better interface to `putenv'.
2488 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2489 function for traversing a directory tree.
2491 * The GNU obstack package is now also part of the C library.
2492 The new function `open_obstack_stream' creates a stdio stream that
2493 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2494 formatted output directly to an obstack.
2496 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2497 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2499 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2501 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2502 things to your strings.
2504 * There are some new test programs: test-fseek, testmb, and testrand.
2506 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2507 These ports are not finished, but are a good starting place for really
2508 supporting those systems.
2510 * `/etc/localtime' is now the standard location for the file that says what
2511 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2512 This follows the general principle that `/etc' is the place for all local
2513 configuration files.
2515 * The C library header files now use `extern "C"' when used by the C++
2516 compiler, so the C library should now work with C++ code.
2518 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2519 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2522 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2523 function which uses the `merge sort' algorithm, and is said to be
2524 significantly faster than the old GNU `qsort' function. Merge sort is
2525 now the standard `qsort' function. The new algorithm can require a lot
2526 of temporary storage; so, the old sorting function is called when the
2527 required storage is not available.
2529 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2530 provides the Unix `crypt' function, plus some other entry points.
2532 * The code and header files taken from 4.4 BSD have been updated with the
2533 latest files released from Berkeley.
2535 ----------------------------------------------------------------------
2536 Copyright information:
2538 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2540 Permission is granted to anyone to make or distribute verbatim copies
2541 of this document as received, in any medium, provided that the
2542 copyright notice and this permission notice are preserved,
2543 thus giving the recipient permission to redistribute in turn.
2545 Permission is granted to distribute modified versions
2546 of this document, or of portions of it,
2547 under the above conditions, provided also that they
2548 carry prominent notices stating who last changed them.
2551 version-control: never
projects / thirdparty / glibc.git / blob