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:
16 * The following bugs are resolved with this release:
18 6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347, 15514,
19 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198, 16275,
20 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447, 16516,
21 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600, 16609,
22 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639, 16642,
23 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689, 16695,
24 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739, 16740,
25 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791, 16796,
26 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849, 16854,
27 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912, 16915,
28 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958, 16965,
29 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022, 17031,
30 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078, 17079,
31 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150, 17153,
32 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
34 * Reverted change of ABI data structures for s390 and s390x:
35 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
36 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
37 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
38 are preserved pointing straight to the same implementation as the old ones.
39 Given that, new callers will simply provide a too-big buffer to these
40 functions. Any applications/libraries out there that embed jmp_buf or
41 ucontext_t in an ABI-relevant data structure that have already been rebuilt
42 against 2.19 headers will have to rebuilt again. This is necessary in any
43 case to revert the breakage in their ABI caused by the glibc change.
45 * Support for file description locks is added to systems running the
46 Linux kernel. The standard file locking interfaces are extended to
47 operate on file descriptions, not file descriptors, via the use of
48 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
49 are associated with an open file instead of a process.
51 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
53 * The minimum Linux kernel version that this version of the GNU C Library
54 can be used with is 2.6.32.
56 * Running the testsuite no longer terminates as soon as a test fails.
57 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
58 with PASS or FAIL lines for individual tests. A summary of the results is
59 printed, including a list of failing lists, and "make check" exits with
60 error status if there were any unexpected failures. "make check
61 stop-on-test-failure=y" may be used to keep the old behavior.
63 * The am33 port, which had not worked for several years, has been removed
66 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
67 supported; they now act the same as _DEFAULT_SOURCE (but generate a
68 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
69 conflicted with POSIX (support for which was removed in 2.19), the
70 interfaces those macros enabled remain available when compiling with
71 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
74 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
76 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
77 This may improve lock scaling of existing programs on TX capable systems.
78 The lock elision code is only built with --enable-lock-elision=yes and
79 then requires a GCC version supporting the TX builtins. With lock elision
80 default mutexes are elided via __builtin_tbegin, if the cpu supports
81 transactions. By default lock elision is not enabled and the elision code
84 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
85 copy the path argument. This allowed programs to cause posix_spawn to
86 deference a dangling pointer, or use an unexpected pathname argument if
87 the string was modified after the posix_spawn_file_actions_addopen
90 * All supported architectures now use the main glibc sysdeps directory
91 instead of some being in a separate "ports" directory (which was
92 distributed separately before glibc 2.17).
94 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
95 On configurations that support it (all Linux configurations), it's now
96 used regardless of the --enable-add-ons switch to configure. It is no
97 longer possible to build such configurations without pthreads support.
99 * Locale names, including those obtained from environment variables (LANG
100 and the LC_* variables), are more tightly checked for proper syntax.
101 setlocale will now fail (with EINVAL) for locale names that are overly
102 long, contain slashes without starting with a slash, or contain ".." path
103 components. (CVE-2014-0475) Previously, some valid locale names were
104 silently replaced with the "C" locale when running in AT_SECURE mode
105 (e.g., in a SUID program). This is no longer necessary because of the
108 * On x86-64, the dynamic linker's lazy-binding support is now compatible
109 with application code using Intel MPX instructions. (With all previous
110 versions, the MPX register state could be clobbered when making calls
111 into or out of a shared library.) Note that while the new dynamic
112 linker is compatible with all known x86 hardware whether or not it
113 supports Intel MPX, some x86 instruction-set emulators might fail to
114 handle the new instruction encodings. This is known to affect Valgrind
115 versions up through 3.9 (but will be fixed in the forthcoming 3.10
116 release), and might affect other tools that do instruction emulation.
118 * Support for loadable gconv transliteration modules has been removed.
119 The support for transliteration modules has been non-functional for
120 over a decade, and the removal is prompted by security defects. The
121 normal gconv conversion modules are still supported. Transliteration
122 with //TRANSLIT is still possible, and the //IGNORE specifier
123 continues to be supported. (CVE-2014-5119)
125 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
126 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
127 resulting a denial-of-service security vulnerability in applications which
128 use functions related to iconv. (CVE-2014-6040)
132 * The following bugs are resolved with this release:
134 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
135 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
136 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
137 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
138 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
139 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
140 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
141 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
142 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
143 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
144 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
145 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
146 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
147 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
148 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
149 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
150 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
151 16431, 16453, 16474, 16506, 16510, 16529
153 * Slovenian translations for glibc messages have been contributed by the
154 Translation Project's Slovenian team of translators.
156 * The public headers no longer use __unused nor __block. This change is to
157 support compiling programs that are derived from BSD sources and use
158 __unused internally, and to support compiling with Clang's -fblock
159 extension which uses __block.
161 * CVE-2012-4412 The strcoll implementation caches indices and rules for
162 large collation sequences to optimize multiple passes. This cache
163 computation may overflow for large collation sequences and may cause a
164 stack or buffer overflow. This is now fixed to use a slower algorithm
165 which does not use a cache if there is an integer overflow.
167 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
168 rules for large collation sequences to optimize multiple passes and falls
169 back to alloca if malloc fails, resulting in a possible stack overflow.
170 The implementation now falls back to an uncached collation sequence lookup
173 * CVE-2013-4788 The pointer guard used for pointer mangling was not
174 initialized for static applications resulting in the security feature
175 being disabled. The pointer guard is now correctly initialized to a
176 random value for static applications. Existing static applications need
177 to be recompiled to take advantage of the fix (bug 15754).
179 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
180 to the d_name member of struct dirent, or omit the terminating NUL
181 character. (Bugzilla #14699).
183 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
184 aligned_alloc functions could allocate too few bytes or corrupt the
185 heap when passed very large allocation size values (Bugzilla #15855,
188 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
189 for AF_INET6 has been fixed (Bugzilla #16072).
191 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
192 pap_CW, quz_PE, the_NP.
194 * Substantially revised locales: gd_GB, ht_HT
196 * The LC_ADDRESS field was updated to support country_car for almost all
199 * ISO 1427 definitions were updated.
201 * ISO 3166 definitions were updated.
203 * The localedef utility now supports --big-endian and --little-endian
204 command-line options to generate locales for a different system from that
205 for which the C library was built.
207 * Binary locale files now only depend on the endianness of the system for
208 which they are generated and not on other properties of that system. As a
209 consequence, binary files generated with new localedef may be incompatible
210 with old versions of the GNU C Library, and binary files generated with
211 old localedef may be incompatible with this version of the GNU C Library,
212 in the following circumstances:
214 + Locale files may be incompatible on m68k systems.
216 + Locale archive files (but not separate files for individual locales) may
217 be incompatible on systems where plain "char" is signed.
219 * The configure option --disable-versioning has been removed. Builds with
220 --disable-versioning had not worked for several years.
222 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
223 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
225 * SystemTap probes for malloc have been introduced.
227 * SystemTap probes for slow multiple precision fallback paths of
228 transcendental functions have been introduced.
230 * Support for powerpc64le has been added.
232 * The soft-float powerpc port now supports e500 processors.
234 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
236 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
237 set of header declarations that are enabled by default, even when other
238 feature test macros or compiler options such as -std=c99 would otherwise
239 disable some of those declarations.
241 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
242 conflict with POSIX. The libbsd-compat library (which was a dummy library
243 that did nothing) has also been removed.
245 * Preliminary documentation about Multi-Thread, Async-Signal and
246 Async-Cancel Safety has been added.
248 * Change of ABI data structures for s390 and s390x:
249 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
250 allow for future hardware extensions. All library functions that accept or
251 return these structures were versioned in order to provide backwards
252 compatibility with existing code. However, not all cases can be handled
253 with interface versioning. If an application embeds either structure into
254 another structure and that structure is passed to another compilation unit
255 which expects the newer larger-sized object then any access to the new
256 fields will result in undefined behaviour. Similarly any access to fields
257 that were moved by the enlarging of the structures will cause undefined
258 behaviour. To fix the undefined behaviour all objects that are part of the
259 final in-memory image must agree on the size of structures, and this may
260 require recompilation.
264 * The following bugs are resolved with this release:
266 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
267 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
268 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
269 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
270 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
271 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
272 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
273 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
274 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
275 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
276 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
277 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
278 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
281 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
282 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
283 Distributions can re-enable building and using pt_chown via the new configure
284 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
285 considerable security risks and should only be used if the distribution
286 understands and accepts the risks.
288 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
291 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
292 fixed (Bugzilla #15330).
294 * Add support for calling C++11 thread_local object destructors on thread
295 and program exit. This needs compiler support for offloading C++11
296 destructor calls to glibc.
298 * Improved worst case performance of libm functions with double inputs and
301 * Support for priority inherited mutexes in pthread condition variables on
302 non-x86 architectures.
304 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
306 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
308 * Optimized string functions for ARM. Implemented by Will Newton and
311 * Optimized libm functions for SPARC. Implemented by David S. Miller.
313 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
316 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
317 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
319 * Added a benchmark framework to track performance of functions in glibc.
321 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
322 It is based on draft TS 18661 and currently enabled as a GNU extension.
324 * On Linux, the clock function now uses the clock_gettime system call
325 for improved precision, rather than old times system call.
327 * Added support for version-3 tz format files. This is needed when using
328 the tz database release 2013e or later, and affects a few unusual cases --
329 currently only TZ='America/Godthab' for time stamps after 2037.
331 * Added new API functions pthread_getattr_default_np and
332 pthread_setattr_default_np to get and set the default pthread
333 attributes of a process.
335 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
336 This may improve lock scaling of existing programs on TSX capable systems.
337 When the --enable-lock-elision=yes parameter is specified at configure
338 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
341 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
342 availability). Implemented by Ryan S. Arnold.
344 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
348 * The following bugs are resolved with this release:
350 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
351 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
352 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
353 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
354 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
355 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
356 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
357 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
358 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
359 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
360 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
361 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
362 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
363 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
364 14879, 14889, 14893, 14898, 14914.
366 * Optimization of memcpy for MIPS.
368 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
369 EMFILE has been fixed (Bugzilla #14889).
371 * The add-on ports collection is now distributed in the "ports" subdirectory
372 of the main GNU C Library distribution, rather than separately.
374 * Port to ARM AArch64 contributed by Linaro.
376 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
377 Optimized versions of memcpy, memset, and memcmp added for System z10 and
379 Implemented by Andreas Krebbel.
381 * The new function secure_getenv allows secure access to the environment,
382 returning NULL if running in a SUID/SGID process. This function replaces
383 the internal function __secure_getenv.
385 * SystemTap static probes have been added into the dynamic linker.
386 Implemented by Gary Benson.
388 * Optimizations of string functions strstr, strcasestr and memmem.
389 Implemented by Maxim Kuvyrkov.
391 * The minimum Linux kernel version that this version of the GNU C Library
392 can be used with is 2.6.16.
394 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
395 powerpc POWER7. Implemented by Will Schmidt.
397 * New configure option --disable-nscd builds the C library such that it
398 never attempts to contact the Name Service Caching Daemon (nscd).
399 New configure option --disable-build-nscd avoids building nscd itself;
400 this is the default if --disable-nscd is used.
402 * Improved support for cross-compilation, including cross-testing and
403 bootstrap builds without a previously built glibc.
405 * Several testsuite tests are now able to test multiple IFUNC variants of an
406 interface, rather than just testing the one that would be chooen by
409 * New configure options --with-bugurl and --with-pkgversion, for
410 distributors to use to embed their bug-reporting and package version
411 information in --help and --version output.
413 * The ttyname and ttyname_r functions on Linux now fall back to searching for
414 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
415 allows creation of chroots without the procfs mounted on /proc.
417 * The `crypt' function now fails if passed salt bytes that violate the
418 specification for those values. On Linux, the `crypt' function will
419 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
420 enabled, and fail on encrypted strings using the MD5 or DES algorithm
421 when the mode is enabled.
423 * The `clock_*' suite of functions (declared in <time.h>) is now available
424 directly in the main C library. Previously it was necessary to link with
425 -lrt to use these functions. This change has the effect that a
426 single-threaded program that uses a function such as `clock_gettime' (and
427 is not linked with -lrt) will no longer implicitly load the pthreads
428 library at runtime and so will not suffer the overheads associated with
429 multi-thread support in other code such as the C++ runtime library.
431 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
436 * The following bugs are resolved with this release:
438 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
439 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
440 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
441 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
442 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
443 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
444 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
445 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
446 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
447 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
448 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
449 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
450 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
451 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
452 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
453 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
454 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
455 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
456 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
457 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
458 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
459 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
462 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
463 configuring glibc with:
464 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
465 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
466 Implemented by H.J. Lu.
470 + define static_assert
472 + do not declare gets
474 + declare at_quick_exit and quick_exit also for ISO C11
476 + aligned_alloc. NB: The code is deliberately allows the size parameter
477 to not be a multiple of the alignment. This is a moronic requirement
478 in the standard but it is only a requirement on the caller, not the
483 + uchar.h support added
485 + CMPLX, CMPLXF, CMPLXL added
487 Implemented by Ulrich Drepper.
489 * Support for the IA-64 has been moved to ports.
491 * Remove support for anything but ELF binary format
493 * Checking versions of poll, ppoll added.
494 Implemented by Ulrich Drepper.
496 * More generic and 64-bit performance optimizations to math functions.
497 Implemented by Ulrich Drepper.
499 * New configure option --enable-obsolete-rpc makes the deprecated RPC
500 headers and functions available at compile time as they were before
501 version 2.14. This option will be removed at some time in the future
502 after the TI-RPC library becomes fully sufficient for the needs of
503 existing applications.
505 * Compatibility code for Linux kernel versions before 2.4 has been removed.
506 Note that glibc is not expected to work with any Linux kernel version
509 * New header <sys/auxv.h> and function getauxval allowing easy access to
510 the AT_* key-value pairs passed from the Linux kernel. The header also
511 defines the HWCAP_* bits associated with the AT_HWCAP key.
513 * New locales: mag_IN
515 * New configure option --enable-systemtap builds SystemTap static probes
516 into libc for setjmp and longjmp and into libpthread for various operations.
517 So far the setjmp/longjmp probes and some of the libpthread probes are
518 provided only for i*86 and x86_64.
519 Implemented by Roland McGrath and Rayson Ho.
521 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
523 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
526 * More optimized functions for SPARC. Implemented by David S. Miller.
528 * Improved support for cross-compilation, especially bootstrap builds
529 without a previously built glibc.
531 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
532 Chris Metcalf from Tilera.
534 * Support for the old ARM ABI has been removed from ports. Only the EABI is
535 now supported for ARM processors.
537 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
538 as the name of the dynamic linker, to distinguish it from the
539 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
541 * Support for CRIS has been removed from ports.
543 * A new class of installed header has been documented for low-level
544 platform-specific functionality. PowerPC added the first instance with a
545 function to provide time base register access. Contributed by Tulio
546 Magno Quites Machado Filho.
548 * ix86 configurations now install header files that are consistent with
549 what x86-64 configurations install. These same header files can be used
550 for -m32, -m64, or -mx32 builds.
551 Contributed by H.J. Lu.
553 * Math library bug fixes. A thorough audit of all open math library bugs was
554 conducted by Joseph Myers. Significant progress was made on many math
555 library bugs resulting in more accurate exceptions and function results.
556 Many thanks to all those that contributed including Andreas Jaeger for his
557 patch review and work on the x87 trigonometric instruction issues.
559 * Timezone data is no longer installed. Timezone-related binaries and scripts
560 will continue to be installed. Users should obtain their timezone data from
561 their distribution provider or from the tzdata package at
562 <ftp://munnari.oz.au/pub/>.
566 * The following bugs are resolved with this release:
568 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
569 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
570 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
571 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
572 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
573 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
574 13484, 13506, 13515, 13523, 13524, 13538, 13540
576 * New program pldd to list loaded object of a process
577 Implemented by Ulrich Drepper.
579 * Add nss_db support back to glibc. No more dependency on Berkeley db
580 and support for initgroups lookups.
581 Implemented by Ulrich Drepper.
583 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
584 Contributed by HJ Lu.
586 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
587 Contributed by HJ Lu.
589 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
590 on x86-32 and x86-64.
591 Contributed by Liubov Dmitrieva.
593 * Optimized strchr and strrchr for SSE on x86-32.
594 Contributed by Liubov Dmitrieva.
596 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
597 for x86-64 and x86-32.
598 Contributed by Liubov Dmitrieva.
600 * New interfaces: scandirat, scandirat64
601 Implemented by Ulrich Drepper.
603 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
604 Implemented by Ulrich Drepper.
606 * nscd now also caches the netgroup database.
607 Implemented by Ulrich Drepper.
609 * Integrate libm with gcc's -ffinite-math-only option.
610 Implemented by Ulrich Drepper.
612 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
613 to math functions. Implemented by Ulrich Drepper.
615 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
616 Implemented by Ulrich Drepper.
618 * New Linux interfaces: process_vm_readv, process_vm_writev
620 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
621 Implemented by Ulrich Drepper.
623 * Optimized nearbyint and strcasecmp for PPC.
624 Implemented by Adhemerval Zanella.
626 * New locales: bho_IN, unm_US, es_CU, ta_LK
630 * The following bugs are resolved with this release:
632 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
633 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
634 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
635 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
636 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
637 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
638 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
639 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
640 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
641 12795, 12811, 12813, 12814, 12841
643 * The RPC implementation in libc is obsoleted. Old programs keep working
644 but new programs cannot be linked with the routines in libc anymore.
645 Programs in need of RPC functionality must be linked against TI-RPC.
646 The TI-RPC implementation is IPv6 enabled and there are other benefits.
648 Visible changes of this change include (obviously) the inability to link
649 programs using RPC functions without referencing the TI-RPC library and the
650 removal of the RPC headers from the glibc headers.
651 Implemented by Ulrich Drepper.
653 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
654 syncfs, setns, sendmmsg
656 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
657 yue_HK, lij_IT, mhr_RU
659 * New encodings: CP770, CP771, CP772, CP773, CP774
661 * New program sotruss to trace calls through PLTs
662 Implemented by Ulrich Drepper.
664 * The malloc hook implementation is marked deprecated and will be removed
665 from the default implementation in the next version. The design never
666 worked ever since the introduction of threads. Even programs which do
667 not create threads themselves can use multiple threads created internally.
671 * The following bugs are resolved with this release:
673 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
674 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
675 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
676 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
679 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
681 * POWER7 optimizations: memset, memcmp, strncmp
683 * New optimized string functions for x86-64: strnlen (SSE2),
684 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
685 Implemented by Ulrich Drepper.
689 * The following bugs are resolved with this release:
691 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
692 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
693 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
694 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
695 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
696 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
697 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
698 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
700 * New interfaces: pthread_getname_np, pthread_setname_np
702 * New Linux interface: recvmmsg
704 * STT_GNU_IFUNC implemented for Sparc by David Miller.
706 * The dynamic linker now recognizes supported ABI versions from the
707 EI_ABIVERSION field in the ELF header.
708 Implemented by Ulrich Drepper.
710 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
711 will not be used to fill in password fields in the passwd.byname replies.
712 Instead it is used to synthesize the shadow.byname table, should it be
713 missing. This is a useful mode in some installations involving Solaris.
714 Implemented by Ulrich Drepper.
716 * New locales: kok_IN, sq_MK, cv_RU
720 * The following bugs are resolved with this release:
722 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
723 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
724 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
725 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
726 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
727 10789, 10817, 10823, 10840, 10847
729 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
731 Implemented by Ulrich Drepper.
733 * Checking version of longjmp added that fails if an uninitialized stack
734 frame would be created. Implemented by Ulrich Drepper.
736 * STT_GNU_IFUNC is now supported in static executables.
737 Implemented by H.J. Lu.
739 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
741 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
742 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
743 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
744 Contributed by H.J. Lu.
746 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
747 Implemented by Ulrich Drepper.
749 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
751 Contributed by H.J. Lu.
753 * Support for fma instruction in AVX on x86-64.
754 Implemented by H.J. Lu and Ulrich Drepper.
756 * AVX support in x86-64 auditing support in ld.so.
757 Implemented by H.J. Lu.
759 * STB_GNU_UNIQUE support added.
760 Implemented by Ulrich Drepper.
762 * Implement second fallback mode for optimized DNS lookup for even more
763 broken environments. If two requests from the same port are not
764 handled correctly close the socket and open a new one before sending
765 the second request. The 'single-request-reopen' option in /etc/resolv.conf
766 can be used to select this mode right away, instead of rediscovering the
767 necessity is every process again.
768 Implemented by Ulrich Drepper.
770 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
771 Implemented by Adam Tkac.
773 * Optimized iconv conversions for S390x.
774 Implemented by Andreas Krebbel.
776 * Using condvars with PI mutexes is now more efficient due to kernel
777 support for requeueing to PI futexes. NPTL support added for x86-64.
778 Implemented by Ulrich Drepper.
780 * New locales: ps_AF, my_MM
784 * The following bugs are resolved with this release:
786 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
787 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
788 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
789 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
790 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
792 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
793 Implemented by Ulrich Drepper.
795 * New Linux interfaces: accept4, fallocate, fallocate64.
796 Implemented by Ulrich Drepper.
798 * Correct declarations of string function when used in C++ code. This
799 could lead to compile errors for invalid C++ code.
801 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
804 * New POSIX 2008 interface: psiginfo
805 Implemented by Ulrich Drepper.
807 * New ISO C++1x interfaces: quick_exit, at_quick_exit
808 Implemented by Ulrich Drepper.
810 * Support for selecting between multiple function definitions at runtime
811 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
813 * The libcrypt library can now use the hash function implementations in
814 NSS. Implemented by Ulrich Drepper.
816 * The malloc implementation can be compiled to be less memory efficient
817 but higher performing in multi-threaded programs.
818 Implemented by Ulrich Drepper.
820 * New locales: nan_TW@latin, ks_IN
822 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
823 Implemented by Ulrich Drepper.
825 * Extended printf hook support. It is possible to use user-defined types
826 and extend existing format specifiers.
827 Implemented by Ulrich Drepper.
829 * Handling for group shadow files has been added.
830 Implemented by Ulrich Drepper.
832 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
833 servers (the case, e.g., for some people using the built-in DNS
834 server in ADSL modems/routers). There is a once-per-process timeout
835 in case of a broken server. To avoid it, users can run nscd or put
836 'options single-request' in /etc/resolv.conf.
837 Implemented by Ulrich Drepper.
841 * The following bugs are resolved with this release:
843 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
844 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
845 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
846 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
847 6968, 6974, 6980, 6995, 7008, 7009, 7029
849 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
850 up at the same time. Implemented by Ulrich Drepper.
852 * TLS descriptors for LD and GD on x86 and x86-64.
853 Implemented by Alexandre Oliva.
855 * getaddrinfo now handles DCCP and UDPlite.
856 Implemented by Ulrich Drepper.
858 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
859 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
860 Implemented by Ulrich Drepper.
862 * New implementation of memmem, strstr, and strcasestr which is O(n).
863 Implemented by Eric Blake.
865 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
867 * Implement "e" option for popen to open file descriptor with the
868 close-on-exec flag set. Implemented by Ulrich Drepper.
870 * Implement "b" mode for fmemopen. In this mode writes writes don't
871 implicitly add a NUL byte and seeks from the end of the buffer really
872 use the buffer end, not the string length as the basis.
873 Implemented by Ulrich Drepper.
875 * Many functions, exported and internal, now atomically set the close-on-exec
876 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
878 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
880 Implemented by Pravin Satpute.
882 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
886 * The following bugs are resolved with this release:
888 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
889 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
890 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
891 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
892 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
893 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
894 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
896 * New locales: bo_CN, bo_IN, shs_CA.
898 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
900 * Sorting rules for some Indian languages (Devanagari and Gujarati).
901 Implemented by Pravin Satpute.
903 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
905 * nscd caches now all timeouts for DNS entries
906 Implemented by Ulrich Drepper.
908 * nscd is more efficient and wakes up less often.
909 Implemented by Ulrich Drepper.
911 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
912 vdprintf, and obstack_vprintf.
913 Implemented by Jakub Jelinek.
915 * Faster memset for x86-64.
916 Implemented by Harsha Jagasia and H.J. Lu.
918 * Faster memcpy on x86.
919 Implemented by Ulrich Drepper.
921 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
922 Implemented by Ulrich Drepper.
924 * Faster sqrt and sqrtf implemention for some PPC variants.
925 Implemented by Steven Munroe.
929 * The following bugs are resolved with this release:
931 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
932 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
933 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
934 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
935 5071, 5103, 5104, 5112, 5113, 5184, 5186
937 * More checking functions: fread, fread_unlocked, open*, mq_open.
938 Implemented by Jakub Jelinek and Ulrich Drepper.
940 * Extend fortification to C++. Implemented by Jakub Jelinek.
942 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
943 by not recognizing 'a' as a modifier when those specs are requested.
944 Implemented by Jakub Jelinek.
946 * PPC optimizations to math and string functions.
947 Implemented by Steven Munroe.
949 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
950 options to be passed. Implemented by Ulrich Drepper.
952 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
954 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
955 Implemented by Ulrich Drepper.
957 * Handle private futexes in the NPTL implementation.
958 Implemented by Jakub Jelinek and Ulrich Drepper.
960 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
961 Implemented by Roland McGrath and Ulrich Drepper.
963 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
965 * SHA-256 and SHA-512 based password encryption.
966 Implemented by Ulrich Drepper.
968 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
969 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
972 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
973 Implemented by Ulrich Drepper.
977 * The following bugs are resolved with this release:
979 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
980 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
981 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
982 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
983 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
984 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
985 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
988 * New Linux interfaces: epoll_pwait, sched_getcpu.
990 * New generic interfaces: strerror_l.
992 * nscd can now cache the services database. Implemented by Ulrich Drepper.
996 * The following bugs are resolved with this release:
998 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
999 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
1000 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
1001 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
1002 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
1003 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
1004 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
1005 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
1006 3225, 3251, 3252, 3253, 3273
1008 * For Linux, the sorting of addresses returned by getaddrinfo now also
1009 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
1010 Implemented by Ulrich Drepper.
1012 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
1013 Implemented by Ulrich Drepper.
1015 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
1017 * New iconv module for MIK. Contributed by Alexander Shopov.
1019 * For sites with broken group and/or passwd database, the auto-propagate
1020 option of nscd can prevent creating ID lookup entries from the results
1021 of a name lookup and vice versa. This usually is no problem but some
1022 site might have problems with the default behavior.
1023 Implemented by Ulrich Drepper.
1025 * Iterating over entire database in NIS can be slow. With the
1026 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
1027 to trade time for memory. The entire database will be read at once.
1028 Implemented by Ulrich Drepper.
1030 * The interfaces introduced in RFC 3542 have been implemented by
1033 * Support for the new ELF hash table format was added by Ulrich Drepper.
1035 * Support for priority inheritance mutexes added by Jakub Jelinek and
1038 * Support for priority protected mutexes added by Jakub Jelinek.
1040 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1041 or_IN, csb_PL, fy_NL, sr_ME.
1045 * More overflow detection functions.
1047 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1048 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1050 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1051 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1052 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1053 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1054 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1055 by Masahide Washizawa.
1057 * It is now possible to install audit libraries for the dynamic linker using
1058 LD_AUDIT. Implemented by Ulrich Drepper.
1060 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1061 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1062 For a libc and libpthread that works well on Linux 2.4 kernels, we
1063 recommend using the stable 2.3 branch.
1065 * The new function open_wmemstream acts like open_memstream,
1066 but uses a wchar_t wide character buffer.
1068 * The new function ppoll is an improved version of poll, similar to pselect.
1070 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1071 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1072 renameat, unlinkat, linkat, symlinkat, readlinkat.
1074 * New Linux kernel system calls: unshare,
1075 inotify_init, inotify_add_watch, inotify_rm_watch.
1077 * The euidaccess function is now also known by the alias eaccess,
1078 for compatibility with some other systems.
1080 * Timezone data updated to 2006b version.
1084 * The following bugs are resolved with this release:
1086 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1087 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1088 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1089 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1090 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1091 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1093 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1095 * As of this release, GCC 4 can be used to compile the C Library.
1097 * Timezone data updated to 2005m version.
1101 * The following bugs are resolved with this release:
1103 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1104 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1105 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1106 777, 787, 821, 822, 823, 825
1108 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1112 * Support for RFC 3678. Real implementations exist only for Linux so far.
1113 Implemented by Ulrich Drepper.
1115 * nscd can now cache entries persistently. Expiring entries are reloaded.
1116 For speedups the cache can be shared in memory with client processes.
1117 Implemented by Ulrich Drepper.
1119 * nscd can now perform SELinux checks.
1120 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1122 * getaddrinfo queries are now cached. Canonical name lookup is performed
1124 Implemented by Ulrich Drepper.
1126 * The nothrow function attribute is used when headers are used by gcc when
1127 compiling C code. This can avoid significant amounts of exception
1130 * The malloc functions perform more error checking and are stricter when
1131 it comes to reacting on errors. The default action is to terminate
1132 the process after showing an error message. Implemented by Ulrich Drepper.
1134 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1135 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1137 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1138 namespaces using the new function dlmopen(). This feature is of course,
1139 like most other dynamic loading functionality, not available in statically
1140 linked applications. Implemented by Ulrich Drepper.
1142 * Low-overhead boundary checking variants of string and some stdio functions
1143 were added. These are to be used in conjunction with a gcc patch by
1144 Jakub Jelinek which adds calls to these functions if possible.
1145 Implemented by Jakub Jelinek and Ulrich Drepper.
1147 * Old code for several operating systems and machine architectures that
1148 have not been in working condition in a long time have been removed from
1149 the main source tree maintained by the GNU C Library's maintainers.
1150 These files are now reside in the separate `ports' source module
1151 that is usable as an add-on when building the library.
1155 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1156 interrogate the dynamic linker, compatible with the Solaris interface.
1158 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1159 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1161 * getifaddrs now uses the netlink interface on Linux to get its information.
1162 Implemented by Thorsten Kukuk.
1164 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1165 Implemented by Ulrich Drepper.
1167 * support for non-executable stacks on x86 has been added. Changes mostly
1170 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1173 * getaddrinfo now performs destination address selection according to
1178 * Thread-safe interfaces for many functions that access locale data
1179 were added in version 2.3, but these features were omitted from NEWS.
1180 Many functions have variants with an `_l' suffix that take a `locale_t'
1181 object as a parameter rather than consulting the current locale.
1182 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1183 create and maintain `locale_t' objects. Additionally, the new function
1184 `uselocale' sets "the current locale" (as used by functions not so
1185 parameterized) set for an individual thread. These features were added
1186 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1188 * The functions getresuid, getresgid, setresuid, and setresgid, which
1189 have long been available on Linux, are now declared in <unistd.h>
1190 and are now also available on the Hurd.
1192 * ELF thread-local storage support (TLS) now works on x86-64.
1194 * The new dynamic string token $LIB is expanded in shared library names.
1195 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1197 * Aldy Hernandez contributed complete software floating point support for
1198 PowerPC machines with no FPU.
1200 * fexecve is implemented on Linux.
1202 * The `btowc' function should work at least twice as fast due to
1203 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1205 * With approriate thread add-ons cancelable functions are now implemented
1206 in libc.so as well. No need to call the function in libpthread. This
1207 change allowed to finally disable the incorrect and expensive handling
1208 of weak definition in ld.so.
1210 * Yet more PLT entries in libc.so have been removed. We finally arrived
1211 at the bare minimum. Startup times improved appropriately.
1213 * Support for the new Linux/x86 system call interface was added. The
1214 AT_SYSINFO auxiliary vector entry is recognized and handled.
1218 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1221 * iconv (the program and the interface) now accepts empty names (excluding
1222 options like //TRANSLIT) to mean "use charset of current locale".
1224 * localedef can now transliterate characters in strings which are not in
1225 the provided charmap. The information from the input locale is used.
1227 * Prelinking support was added for ELF targets. This requires additional
1228 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1230 * Read-only stdio streams now use mmap to speed up operation by eliminating
1231 copying and buffer underflows. To use add 'm' to the mode string of
1232 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1234 * The malloc functions were completely rewritten by Wolfram Gloger based
1235 on Doug Lea's malloc-2.7.0.c.
1237 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1238 implementation of regex.
1240 * Bruno Haible upgraded the iconv and locale implementation to support
1243 * Contents of the LC_* and LANG environment variables in the CEN style are
1244 not recognized anymore. It never was used. Change by Ulrich Drepper.
1246 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1247 thread-local storage (TLS) ABI on some platforms.
1248 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1250 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1251 EUC-JISX0213, and TSCII.
1253 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1254 BSD-compatible interface for getting all network interface addresses.
1255 Implementation for IPv4 by Roland McGrath.
1257 * Loading of locale data is faster due to the introduction of a locale
1258 archive. Implemented by Roland McGrath and Ulrich Drepper.
1260 * Startup times are significantly reduced by not using exported functions
1261 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1264 * Steven Munroe contributed a port to PowerPC64/Linux.
1268 * The Hurd now uses the GNU libio implementation of stdio rather than the
1269 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1271 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1272 with the same behavior as the Linux system call of the same name.
1276 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1277 128-bit long double format.
1279 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1280 IBM1161, and IBM1162 charsets.
1282 * Andreas Jaeger contributed a port to x86-64/Linux.
1284 * Peter Bruin contributed a port to PowerPC/Hurd.
1286 * libc functions using I/O streams now can handle wide-oriented streams
1289 * optimizations in the dynamic linker. Binaries created by recent binutils
1290 versions start up quicker due to reduced time spent on relocations.
1292 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1296 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1297 asinh, atanh, j0 for the 128-bit long double format.
1299 * Bruno Haible updated all the code handling Unicode in some form to
1300 support Unicode 3.1.
1302 * Speed of regex for single-byte locales is back to previous levels.
1303 Patch by Isamu Hasegawa.
1305 * Alpha, SPARC, and IA-64 now also using floating stacks.
1307 * Startup time of internationalized applications greatly improved through
1308 iconv cache. Use iconvconfig to generate the cache file.
1309 Contributed by Ulrich Drepper.
1311 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1312 severe performance problems. Patch by David Mosberger.
1314 * The Hurd port got a lot more functionality like AIO, various stdio
1315 extensions, etc. Mainly done by Roland McGrath.
1317 * mtrace can now lookup symbols in shared libraries.
1321 * Intel's IA-64 math library is largely integrated. It provides fast and
1322 accurate implementatations for most basic and standard math functions
1323 in float, double, and long double format.
1325 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1326 and asin for the 96-bit long double format and asin, log, tan for the
1327 128-bit long double format.
1329 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1330 The basic double functions exist today. Contributed by Abraham Ziv
1331 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1332 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1334 * An asynchronous name lookup library was added. The interface is designed
1335 after POSIX AIO. The proposal was circulated beforehand to get comments.
1336 No negative ones came in. Implemented by Ulrich Drepper.
1338 * Port to S390/64bit contributed by Martin Schwidefsky
1339 <schwidefsky@de.ibm.com>.
1341 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1342 of functions for Linux/IA-64.
1344 * The RPC code is now thread safe. Threads can now use the same service
1345 of different services at the same time. Patch by Eric Norum
1346 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1348 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1349 family of functions for Linux/S390.
1351 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1352 of functions for Linux/x86.
1354 * Port to Linux/CRIS contributed by Axis Communications.
1358 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1359 we can now check for namespace violations and missing declarations. The
1360 result is that almost all headers are now Unix-compliant (as defined in
1361 the upcoming XPG6). The negative side is that some programs might need
1362 corrections, too, if they depend on the incorrect form of the headers in
1363 previous versions which defined too many symbols and included too many
1366 * regex now handles multibyte character sets correctly.
1367 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1369 * iconv (the program) does now conform to the upcoming XPG6 and handles
1370 charmaps. Instead of the charset names the path of charmaps can be
1371 provided and the conversion happens based on this data.
1372 Contributed by Ulrich Drepper.
1374 * The locale program now provides detailed information about the installed
1379 only lists the names of the supported locales
1383 provides details such as country, language, and codeset name.
1384 Contributed by Ulrich Drepper.
1388 * The gencat program now parses the input file according to the charset
1389 selected by the LC_CTYPE category. This is important for stateful
1390 character sets. To make generating catalogs easier there is a way
1391 to overwrite the charset selected by the locale: before the first
1392 message or $ quote line the catalog can contain a line like
1394 $ codeset=ISO-8859-2
1396 to select the charset (ISO-8859-2 in this case).
1398 Implemented by Shinya Hanataka and Ulrich Drepper.
1400 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1401 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1402 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1404 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1405 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1407 * The LANGUAGE environment variable is now ignored unless the locale is
1408 changed from the default "C" locale.
1410 * The usual bug fixes.
1414 * Greg McGary added runtime support for bounds checking using gcc's
1415 new -fbounded-pointers option. ix86 target is complete. PowerPC
1418 * Thorsten Kukuk added secure mode support to nscd.
1420 * The Berkeley db libraries have been removed.
1422 Related, the nss_db module is now in a separate package since it
1423 obviously requires a database library being available.
1425 * Wide character I/O streams implemented by Ulrich Drepper.
1427 * Functions from the extended socket API added by Ulrich Drepper.
1429 * Functions feenableexcept and fedisableexcept to control the
1430 behaviour of individual exceptions have been added by Andreas Jaeger.
1432 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1434 * The resolver code has been updated from bind 8.2.3-T5B which supports
1435 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1438 This change could in some situations effect backward compatibility. Since
1439 now `_res' is a thread-local instead of a global variable, modifying it
1440 in one thread does not have any effect in other threads.
1442 The resolver library was also extended to allow IPv6 as the transport
1443 protocol for the requests. This work was done by Stig Venaas.
1445 * Compatibility code for K&R C compilers has been removed from the
1446 header files. A ISO C compiler is needed to use the library
1447 (conforming to either C89 or C99 standard).
1449 * Complete rewrite of the localedef program to support multibyte character
1450 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1451 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1452 Implemented by Ulrich Drepper.
1454 Bruno Haible significantly improved the generation and use of the data
1455 structures for the wide character tables.
1457 * Plural handling in gettext implemented by Ulrich Drepper.
1459 * The utmp daemon has been removed.
1461 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1463 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1466 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1468 * POSIX barriers implemented by Kaz Kylheku.
1470 * POSIX spawn function family implemented by Ulrich Drepper.
1472 * POSIX spinlocks are now available.
1474 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1476 * the configure option --enable-kernel=X.Y.Z allows to strip out
1477 compatibility for kernel versions before X.Y.Z. This is currently only
1478 implemented for Linux.
1480 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1481 field sin6_scope_id. This means that all programs using IPv6 should be
1482 recompiled. Don't expect binary compatibility with previous glibc
1485 * various conversion modules for IBM character sets contributed by
1488 * IA-64 port by Jes Sorensen and HJ Lu.
1502 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1504 * New xdr functions are added; some rpc functions are now 64bit clean.
1506 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1508 * Fixed known incompatibilities with glibc 2.0.
1510 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1512 * Optimized a number of functions (especially the ELF dynamic loader).
1514 * Update timezone data files.
1516 * lots of charmaps corrections
1518 * some new locale definitions and charmaps
1523 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1524 conform to POSIX member type requirements. Symbol versions have been
1525 adjusted as needed within the library, and for direct use by applications,
1526 but there is potential for problems if third-party libraries use
1527 struct timeval as part of their interface. This does not present
1528 a problem for X and other "essential" system libraries.
1530 * An additional locale model to support C++ Standard Library locale
1531 model and probably more was implemented by Ulrich Drepper.
1533 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1536 * Miles Bader provided the `argp' function family to support hierachical
1537 command line argument parsing, layered on top of getopt.
1539 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1541 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1544 * scanf recognizes the %a and %A format for scanning floating point numbers.
1546 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1547 information and interfaces for the available integer types.
1549 * about 130 new math functions were added to implement the ISO C9x math
1552 * the new header <complex.h> contains definitions of the complex math
1553 functions from ISO C 9X.
1555 * the new header <tgmath.h> defines generic macros to use complex or
1556 real valued functions.
1558 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1560 * Andreas Jaeger provided a test suite for the math library.
1562 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1564 * Ulrich Drepper added character set conversion functions (iconv).
1566 * Optimized string functions have been added.
1568 * The localedata addon is now part of glibc.
1570 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1572 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1573 daemon for NSS (nscd).
1575 Missing a better place here are some numbers on improvements. Under
1576 Linux 2.1.125 un-tar-ing the kernel sources takes
1580 using local files 12.19s 6.88s 22.91s
1582 using NIS 13.92s 8.91s 26.34s
1584 using NIS & nscd 10.37s 7.34s 25.30s
1586 using NIS+ 27.57s 30.37s 640.46s
1588 using NIS+ & nscd 10.25s 7.83s 26.51s
1590 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1592 Keep in mind that non-namelookup related operations dominate above times.
1593 It was just a common complain that using NIS+ unpacking the kernel is
1596 [1] The old nscd implementation is not available anymore since it was
1597 distributed with glibc up to version 2.0.98 and thus is now replaced.
1599 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1601 * Mark Kettenis provided a Hesiod NSS module.
1603 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1604 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1606 * rcmd can now handle netgroups (Dick Streefland).
1608 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1611 * Support for the IPv6 protocol has been added to the socket API, as per the
1612 latest draft standards.
1614 * Support for Linux 2.2 has been added.
1616 * Interface changes relative to the latest 2.0.x release:
1617 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1618 addseverity NEW: Unix98
1619 alphasort64 NEW: LFS
1620 argp_err_exit_status NEW: argp, GNU ext
1621 argp_error NEW: argp, GNU ext
1622 argp_failure NEW: argp, GNU ext
1623 argp_help NEW: argp, GNU ext
1624 argp_parse NEW: argp, GNU ext
1625 argp_program_bug_address NEW: argp, GNU ext
1626 argp_program_version NEW: argp, GNU ext
1627 argp_program_version_hook NEW: argp, GNU ext
1628 argp_state_help NEW: argp, GNU ext
1629 argp_usage NEW: argp, GNU ext
1630 authdes_create NEW: Secure RPC
1631 authdes_getucred NEW: Secure RPC
1632 authdes_pk_create NEW: Secure RPC
1633 backtrace NEW: GNU ext.
1634 backtrace_symbols NEW: GNU ext.
1635 backtrace_symbols_fd NEW: GNU ext.
1637 cacosf NEW: ISO C 9x
1638 cacosh NEW: ISO C 9x
1639 cacoshf NEW: ISO C 9x
1640 cacoshl NEW: ISO C 9x
1641 cacosl NEW: ISO C 9x
1648 casinf NEW: ISO C 9x
1649 casinh NEW: ISO C 9x
1650 casinhf NEW: ISO C 9x
1651 casinhl NEW: ISO C 9x
1652 casinl NEW: ISO C 9x
1654 catanf NEW: ISO C 9x
1655 catanh NEW: ISO C 9x
1656 catanhf NEW: ISO C 9x
1657 catanhl NEW: ISO C 9x
1658 catanl NEW: ISO C 9x
1659 cbc_crypt NEW: Secure RPC
1663 ccoshf NEW: ISO C 9x
1664 ccoshl NEW: ISO C 9x
1670 cimagf NEW: ISO C 9x
1671 cimagl NEW: ISO C 9x
1672 clearerr_locked REMOVED
1673 clntunix_create NEW: sunrpc ext
1675 clog10 NEW: ISO C 9x
1676 clog10f NEW: ISO C 9x
1677 clog10l NEW: ISO C 9x
1687 cprojf NEW: ISO C 9x
1688 cprojl NEW: ISO C 9x
1690 crealf NEW: ISO C 9x
1691 creall NEW: ISO C 9x
1696 csinhf NEW: ISO C 9x
1697 csinhl NEW: ISO C 9x
1700 csqrtf NEW: ISO C 9x
1701 csqrtl NEW: ISO C 9x
1705 ctanhf NEW: ISO C 9x
1706 ctanhl NEW: ISO C 9x
1708 des_setparity NEW: Secure RPC
1709 ecb_crypt NEW: Secure RPC
1710 endutxent NEW: Unix98
1712 exp10f NEW: ISO C 9x
1713 exp10l NEW: ISO C 9x
1717 fattach NEW: STREAMS
1718 fdetach NEW: STREAMS
1722 feclearexcept NEW: ISO C 9x
1723 fegetenv NEW: ISO C 9x
1724 fegetexceptflag NEW: ISO C 9x
1725 fegetround NEW: ISO C 9x
1726 feholdexcept NEW: ISO C 9x
1728 feraiseexcept NEW: ISO C 9x
1729 ferror_locked REMOVED
1730 fesetenv NEW: ISO C 9x
1731 fesetexceptflag NEW: ISO C 9x
1732 fesetround NEW: ISO C 9x
1733 fetestexcept NEW: ISO C 9x
1734 feupdateenv NEW: ISO C 9x
1735 fflush_locked REMOVED
1739 fgets_unlocked NEW: GNU ext.
1740 fileno_locked REMOVED
1752 fputc_locked REMOVED
1753 fputs_unlocked NEW: GNU ext.
1754 fread_unlocked NEW: GNU ext.
1759 fstatvfs NEW: Unix98
1763 ftruncate64 NEW: LFS
1765 fwrite_unlocked NEW: GNU ext.
1766 gai_strerror NEW: IPv6
1770 getchar_locked REMOVED
1772 getdate_err NEW: Unix98
1773 getdate_r NEW: GNU ext.
1775 getnameinfo NEW: IPv6
1776 getnetname NEW: Secure RPC
1777 getpmsg NEW: STREAMS
1778 getpt NEW: Unix98 PTY
1779 getrlimit64 NEW: LFS
1780 getutxent NEW: Unix98
1781 getutxid NEW: Unix98
1782 getutxline NEW: Unix98
1783 glob64 NEW: GNU ext.
1784 globfree64 NEW: GNU ext.
1785 gnu_get_libc_release NEW: GNU ext.
1786 gnu_get_libc_version NEW: GNU ext.
1787 grantpt NEW: Unix98 PTY
1788 host2netname NEW: Secure RPC
1790 iconv_close NEW: iconv
1791 iconv_open NEW: iconv
1792 if_freenameindex NEW: IPv6
1793 if_indextoname NEW: IPv6
1794 if_nameindex NEW: IPv6
1795 if_nametoindex NEW: IPv6
1796 in6addr_any NEW: IPv6
1797 in6addr_loopback NEW: IPv6
1798 inet6_isipv4mapped NEW: IPv6
1799 isastream NEW: STREAMS
1800 iswblank NEW: GNU ext.
1801 key_decryptsession NEW: Secure RPC
1802 key_decryptsession_pk NEW: Secure RPC
1803 key_encryptsession NEW: Secure RPC
1804 key_encryptsession_pk NEW: Secure RPC
1805 key_gendes NEW: Secure RPC
1806 key_get_conv NEW: Secure RPC
1807 key_secretkey_is_set NEW: Secure RPC
1808 key_setnet NEW: Secure RPC
1809 key_setsecret NEW: Secure RPC
1810 llrint NEW: ISO C 9x
1811 llrintf NEW: ISO C 9x
1812 llrintl NEW: ISO C 9x
1813 llround NEW: ISO C 9x
1814 llroundf NEW: ISO C 9x
1815 llroundl NEW: ISO C 9x
1820 lrintf NEW: ISO C 9x
1821 lrintl NEW: ISO C 9x
1822 lround NEW: ISO C 9x
1823 lroundf NEW: ISO C 9x
1824 lroundl NEW: ISO C 9x
1826 makecontext NEW: Unix98
1827 mempcpy NEW: GNU ext.
1830 modify_ldt NEW: kernel
1834 nearbyint NEW: ISO C 9x
1835 nearbyintf NEW: ISO C 9x
1836 nearbyintl NEW: ISO C 9x
1837 netname2host NEW: Secure RPC
1838 netname2user NEW: Secure RPC
1839 nexttoward NEW: ISO C 9x
1840 nexttowardf NEW: ISO C 9x
1841 nexttowardl NEW: ISO C 9x
1845 passwd2des NEW: Secure RPC
1847 pow10f NEW: GNU ext.
1848 pow10l NEW: GNU ext.
1851 printf_size NEW: GNU ext.
1852 printf_size_info NEW: GNU ext.
1853 profil_counter REMOVED
1854 pthread_mutexattr_getkind_np REPLACED
1855 pthread_mutexattr_setkind_np REPLACED
1856 ptsname NEW: Unix98 PTY
1857 ptsname_r NEW: Unix98 PTY
1859 putchar_locked REMOVED
1860 putgrent NEW: GNU ext.
1862 putpmsg NEW: STREAMS
1863 pututxline NEW: Unix98
1867 readdir64_r NEW: LFS
1868 remquo NEW: ISO C 9x
1869 remquof NEW: ISO C 9x
1870 remquol NEW: ISO C 9x
1872 roundf NEW: ISO C 9x
1873 roundl NEW: ISO C 9x
1875 scalbln NEW: ISO C 9x
1876 scalblnf NEW: ISO C 9x
1877 scalblnl NEW: ISO C 9x
1879 sendfile NEW: kernel
1880 setcontext NEW: Unix98
1881 setrlimit64 NEW: LFS
1882 setutxent NEW: Unix98
1884 sigignore NEW: Unix98
1885 sigqueue NEW: POSIX.1b
1886 sigrelse NEW: Unix98
1887 sigset NEW: POSIX.1b
1888 sigtimedwait NEW: POSIX.1b
1889 sigwaitinfo NEW: POSIX.1b
1890 sincos NEW: GNU ext.
1891 sincosf NEW: GNU ext.
1892 sincosl NEW: GNU ext.
1896 strcasestr NEW: GNU ext.
1897 strtoimax NEW: ISO C 9x
1898 strtoumax NEW: ISO C 9x
1899 strverscmp NEW: GNU ext.
1900 svcauthdes_stats NEW: Secure RPC
1901 svcunix_create NEW: sunrpc etx
1902 svcunixfd_create NEW: sunrpc ext
1903 swapcontext NEW: Unix98
1904 tcgetsid NEW: Unix98 PTY
1905 tdestroy NEW: GNU ext.
1906 tgamma NEW: ISO C 9x
1907 tgammaf NEW: ISO C 9x
1908 tgammal NEW: ISO C 9x
1912 truncf NEW: ISO C 9x
1913 truncl NEW: ISO C 9x
1915 unlockpt NEW: Unix98 PTY
1916 updwtmpx NEW: Unix98
1917 user2netname NEW: Secure RPC
1918 utmpxname NEW: Unix98
1919 versionsort NEW: GNU ext.
1920 versionsort64 NEW: GNU ext.
1922 wcscasecmp NEW: GNU ext.
1923 wcsncasecmp NEW: GNU ext.
1924 wcsnlen NEW: GNU ext.
1925 wcstoimax NEW: ISO C 9x
1926 wcstoll NEW: ISO C 9x
1927 wcstoull NEW: ISO C 9x
1928 wcstoumax NEW: ISO C 9x
1930 wordexp NEW: POSIX.2
1931 wordfree NEW: POSIX.2
1932 write_profiling REMOVED
1933 xdecrypt NEW: Secure RPC
1934 xdr_authdes_cred NEW: Secure RPC
1935 xdr_authdes_verf NEW: Secure RPC
1936 xdr_cryptkeyarg NEW: Secure RPC
1937 xdr_cryptkeyarg2 NEW: Secure RPC
1938 xdr_cryptkeyres NEW: Secure RPC
1939 xdr_getcredres NEW: Secure RPC
1940 xdr_key_netstarg NEW: Secure RPC
1941 xdr_key_netstres NEW: Secure RPC
1942 xdr_keybuf NEW: Secure RPC
1943 xdr_keystatus NEW: Secure RPC
1944 xdr_netnamestr NEW: Secure RPC
1945 xdr_sizeof NEW: Secure RPC
1946 xdr_unixcred NEW: sunrpc ext
1947 xencrypt NEW: Secure RPC
1948 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1959 * inet_ntoa is thread-safe
1961 * updwtmp is moved from libutil to libc
1963 * rewrite of cbrt function
1965 * update of timezone data
1979 * add atoll function
1981 * fix complex problems in Berkeley DB code
1983 * fix math functions
1987 * fixed lots of header problems (especially Linux/GNU specific)
1989 * dynamic loader preserves all registers
1991 * Roland McGrath provided support for handling of auxiliary objects in
1992 the ELF dynamic loader.
1994 * support for parallel builds is improved
1998 * GNU extensions are no longer declared by default. To enable them you
1999 must define the macro `_GNU_SOURCE' in your program or compile with
2002 * The library has changed from using GNU ld symbol aliases to using weak
2003 symbols where available. The ELF object file format supports weak
2004 symbols; GNU ld also supports weak symbols in the a.out format. (There
2005 is also now support for other GNU ld extensions in ELF. Use the
2006 `--with-elf' option to configure to indicate you have ELF, and
2007 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
2008 of many files which contained only symbol aliases, reducing the size of
2009 the source and the compiled library; many other files were renamed to
2010 less cryptic names previously occupied by the symbol alias files.
2011 There is a new header file <elf.h> for programs which operate on
2012 files in the ELF format.
2014 * Converted to Autoconf version 2, so `configure' has more options.
2015 Run `configure --help' to see the details.
2017 * The library can now be configured to build profiling, highly-optimized
2018 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
2019 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
2020 `configure' enable building these extra libraries. The shared library is
2021 built by default when using both ELF and GNU ld. When shared libraries
2022 are enabled, the new library `-ldl' is available for arbitrary run-time
2023 loading of shared objects; its interface is defined in <dlfcn.h>. The
2024 new header file <link.h> gives access to the internals of the run-time
2025 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
2026 application of same name on other systems and it provides information
2027 about dynamically linked binaries.
2029 * The C library now provides the run-time support code for profiling
2030 executables compiled with `-pg'. Programs can control the profiling code
2031 through the interface in <sys/gmon.h>. The `gmon.out' files written by
2032 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
2033 the support for this file format was contributed by David Mosberger-Tang.
2035 * The math code has been replaced with a math library based on fdlibm from
2036 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
2037 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
2038 functions. The math functions now reside in a separate library, so
2039 programs using them will need to use `-lm' their linking commands.
2041 * John C. Bowman contributed optimized ix87 assembler inline functions.
2043 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2044 mechanism similar to that found in Solaris 2. This is now used for the
2045 group, passwd, hosts, networks, services, protocols, rpc, ethers,
2046 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
2047 file controls what services are used for each individual database. This
2048 works by loading shared libraries with names specified in `nsswitch.conf',
2049 so service modules can be changed or added at any time without even
2050 relinking any program. Currently there are the file, db, and NIS based
2051 NSS services available.
2053 * The new functions `strtoq' and `strtouq' parse integer values from
2054 strings, like `strtol' and `strtoul', but they return `long long int' and
2055 `unsigned long long int' values, respectively (64-bit quantities).
2057 * The new functions `strtof' and `strtold' parse floating-point values from
2058 strings, like `strtod', but they return `float' and `long double' values,
2059 respectively (on some machines `double' and `long double' are the same).
2061 * Ulrich Drepper has contributed new implementations of the floating-point
2062 printing and reading code used in the `printf' family of functions and
2063 `strtod', `strtof', and `strtold'. These new functions are perfectly
2064 accurate, and much faster than the old ones.
2066 * The implementation of the POSIX locale model was completely rewritten by
2067 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2068 to compile the POSIX locale definition.
2070 * The former dummy implementations of the strcoll and strxfrm function are
2071 now replaced by fully functional code contributed by Ulrich Drepper. The
2072 collation information comes from the POSIX locale definitions.
2074 * The new header <langinfo.h> defines an interface for accessing
2075 various locale-dependent data (using the locale chosen with `setlocale').
2077 * Ulrich Drepper has contributed a new suite of functions for operation on
2078 wide-character and multibyte-character strings, in <wchar.h>;
2079 and classification and case conversion of wide characters, in <wctype.h>.
2080 These new functions are conforming to the ISO C, Amendement 1 specification.
2082 * There is now a second implementation of the standard I/O library available.
2083 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2084 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2086 * You can now use positional parameter specifications in format strings
2087 for the `printf' and `scanf' families of functions. For example,
2088 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2089 ``Number 6, Mr Jones''. This is mainly useful when providing different
2090 format strings for different languages, whose grammars may dictate
2091 different orderings of the values being printed. To support this
2092 feature, the interface for `register_printf_handler' has changed; see
2093 the header file <printf.h> for details.
2095 * The `printf' and `scanf' families of functions now understand a new
2096 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2097 to group numbers as indicated by the locale; for `scanf' and friends, this
2098 says to accept as valid only a number with all the proper grouping
2099 separators in the right places. In the default "C" locale, numbers are
2100 not grouped; but locales for specific countries will define the usual
2101 conventions (i.e. separate thousands with `,' in the US locale).
2103 * The pgrp functions have been regularized, slightly incompatibly but much
2104 less confusingly. The core functions are now `getpgid' and `setpgid',
2105 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2106 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2107 provided for compatibility. There is no longer an incompatible `getpgrp'
2108 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2110 * The new header file <fts.h> and suite of functions simplify programs that
2111 operate on directory trees. This code comes from 4.4 BSD.
2113 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2114 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2115 NSS scheme used in glibc.
2117 * There is a new malloc debugging hook `__memalign_hook'.
2119 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2120 `unsigned int' in <sys/types.h>. These are for compatibility only and
2121 their use is discouraged.
2123 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2124 done differently, so that it works even without GNU ld.
2126 * New function `euidaccess' checks allowed access to a file like `access',
2127 but using the effective IDs instead of the real IDs.
2129 * The time zone data files have been updated for the latest and greatest
2130 local time conventions of the countries of the world.
2132 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2135 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2136 for formatting floating-point numbers. They are provided only for
2137 compatibility; new programs should use `sprintf' instead. There are
2138 also equivalent function for the `long double' floating-point type and
2139 all functions also exist in a reentrant form.
2141 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2142 functions for maintaining the login-record files (primarily of use to
2143 system programs such as `login'), and convenient functions for
2144 allocating and initializing a pseudo-terminal (pty) device.
2146 * Ulrich Drepper has contributed new support for System V style
2147 shared memory and IPC on systems that support it.
2149 * Ulrich Drepper has contributed several miscellaneous new functions found
2150 in System V: The `hsearch' family of functions provide an effective
2151 implementation of hash tables; `a64l' and `l64a' provide a very simple
2152 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2155 * Ulrich Drepper has contributed new reentrant counterparts for the
2156 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2158 * Ulrich Drepper has contributed new, highly-optimized versions of several
2159 string functions for the i486/Pentium family of processors.
2161 * Ulrich Drepper has updated the Linux-specific code, based largely
2162 on work done in Hongjiu Lu's version of GNU libc for Linux.
2163 The GNU library now supports Linux versions 2.0.10 and later,
2164 using the ELF object file format (i[3456]86-*-linux).
2166 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2168 * David Mosberger-Tang and Richard Henderson have ported the C library
2169 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2170 dynamic linking support for ELF/Alpha.
2172 * Richard Henderson contributed several Alpha optimized assembler function
2173 for arithmetic and string handling.
2175 * Ulrich Drepper has contributed a new set of message catalog functions to
2176 support multiple languages using the <libintl.h> interface, for use with
2177 his new package GNU gettext. Translation volunteers have contributed
2178 catalogs of the library's messages in Spanish, German, and Korean.
2180 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2181 program and the `catgets' function for reading the catalog files it
2182 creates. (The <libintl.h> interface is preferred; we include the
2183 <nl_types.h> interface using `catgets' only for source compatibility with
2184 programs already written to use it.)
2186 * New header file <values.h> gives SVID-compatible names for <limits.h>
2189 * Various new macros, declarations, and small header files for compatibility
2192 * New function `group_member' is a convenient way to check if a process has
2193 a given effective group ID.
2195 * When using GCC 2.7 and later, the socket functions are now declared in a
2196 special way so that passing an argument of type `struct sockaddr_in *',
2197 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2198 `struct sockaddr *' type, does not generate a type-clash warning.
2200 * New function `error' declared in header file <error.h> is a convenient
2201 function for printing error messages and optionally exiting; this is the
2202 canonical function used in GNU programs. The new functions `err', `warn',
2203 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2204 doing the same thing.
2206 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2207 POSIX.2 `glob' function to do ~ and {...} expansion.
2209 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2210 `clearenv' which is used in POSIX.9 is also available.
2212 * New function `getsid' returns session ID number on systems that support it.
2214 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2215 files <db.h> and <mpool.h> provide a rich set of functions for several
2216 types of simple databases stored in memory and in files, and <ndbm.h> is
2217 an old `ndbm'-compatible interface using the `db' functions. Link with
2218 `-ldb' to get these functions.
2220 * New macro `strdupa' copies a string like `strdup', but uses local stack
2221 space from `alloca' instead of dynamic heap space from `malloc'.
2223 * New function `strnlen' is like `strlen' but searches only a given maximum
2224 number of characters for the null terminator. `stpncpy', `strndup' and
2225 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2228 * New function `statfs' in header <sys/statfs.h>.
2230 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2231 provide convenient functions for operating on blocks of null-terminated
2234 * A new suite of functions in <utmp.h> handle all the details of reading
2235 and writing the utmp file.
2237 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2240 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2241 completely POSIX compliant and also implemented the extended functionality
2242 to handle alternate digit representation and alternate era date formats.
2244 * Ulrich Drepper provided an implementation of the `strptime' function
2245 defined in XPG4.2 which transforms a string into a `struct tm' value.
2247 * Paul Eggert provided the tzselect shell script as part of the timezone
2248 code. The shell script makes it easy to select the correct timezone
2251 * The implementation of the malloc family of functions is completely replaced
2252 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2253 The implementation uses the mmap function (if available) and it is
2254 optimized for the use in multi threaded programs.
2256 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2257 functions. This new functionality is usable by specifying a special
2258 salt string and it is compatible with implementation on *BSD systems.
2260 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2261 `getsubopt' to handle second level command line options, `bsd_signal'
2262 to access BSD style `signal' functionality, the obsolete `regexp' style
2265 * the `lchown' function is available on system which support this
2268 * The implementation of the shadow password handling function was contributed
2271 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2273 * POSIX.1g support was added. The <sys/select.h> header is available,
2274 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2275 implementation of `getaddrinfo'.
2279 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2281 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2282 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2284 * The new function `daemon' from 4.4 BSD is useful for server programs that
2285 want to put themselves in the background.
2287 * Joel Sherrill has contributed support for several standalone boards that
2288 run without an operating system.
2290 * `printf', `scanf' and friends now accept a `q' type modifier for long
2291 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2293 * All of the code taken from BSD (notably most of the math and networking
2294 routines) has been updated from the BSD 4.4-Lite release.
2296 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2298 * The new functions `getdomainname' and `setdomainname' fetch or change the
2299 YP/NIS domain name. These are system calls which exist on systems which
2302 * The time zone data files have been updated for the latest international
2305 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2306 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2310 * The C library now includes support for Sun RPC, from Sun's free
2311 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2312 are included. (There is still no support for YP.)
2314 * Tom Quinn has contributed a port of the C library to SGI machines running
2315 Irix 4 (mips-sgi-irix4).
2317 * The new `lockf' function is a simplified interface to the locking
2318 facilities of `fcntl', included for compatibility.
2320 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2322 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2324 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2327 * The error message printed by `assert' for a failed assertion now includes
2328 the name of the program (if using GNU ld) and the name of the calling
2329 function (with versions of GCC that support this).
2331 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2333 * The library now includes the <sys/mman.h> header file and memory
2334 management functions `mmap', `munmap', `mprotect', `msync', and
2335 `madvise', on systems that support those facilities.
2337 * The interface for `mcheck' has changed slightly: the function called to
2338 abort the program when an allocation inconsistency is detected now takes
2339 an argument that indicates the type of failure. The new function
2340 `mprobe' lets you request a consistency check for a particular block at
2341 any time (checks are normally done only when you call `free' or `realloc'
2344 * It is now possible to easily cross-compile the C library, building on one
2345 system a library to run on another machine and/or operating system. All
2346 you need to do is set the variable `HOST_CC' in `configparms' to the
2347 native compiler for programs to run on the machine you are building on (a
2348 few generator programs are used on Unix systems); set `CC' to the
2351 * The new function `fexecve' (only implemented on the GNU system) executes
2352 a program file given a file descriptor already open on the file.
2356 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2357 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2359 * You can set the variable `libprefix' in `configparms' to specify a prefix
2360 to be prepended to installed library files; this makes it easy to install
2361 the GNU C library to be linked as `-lgnuc' or whatever.
2363 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2364 copies a limited number of characters from a string, and returns the
2365 address of the last character written.
2367 * You no longer need to check for whether the installed `stddef.h' is
2368 compatible with the GNU C library. configure now checks for you.
2370 * You can now define a per-stream `fileno' function to convert the
2371 stream's cookie into an integral file descriptor.
2373 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2374 allocates zero bytes of storage, and returns a unique pointer which
2375 you can pass to `realloc' or `free'. The behavior is undefined if
2376 you dereference this pointer.
2378 * The C library now runs on Sony NEWS m68k machines running either
2379 NewsOS 3 or NewsOS 4.
2381 * The new `syscall' function is a system-dependent primitive function
2382 for invoking system calls. It has the canonical behavior on Unix
2383 systems, including unreliable return values for some calls (such as
2384 `pipe', `fork' and `getppid').
2386 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2387 to `EAGAIN', which is the preferred name. On systems whose kernels
2388 use two distinct codes, the C library now translates EWOULDBLOCK to
2389 EAGAIN in every system call function.
2393 * The GNU C Library Reference Manual is now distributed with the library.
2394 `make dvi' will produce a DVI file of the printed manual.
2395 `make info' will produce Info files that you can read on line using C-h i
2396 in Emacs or the `info' program.
2397 Please send comments on the manual to bug-glibc-manual@gnu.org.
2399 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2401 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2403 * Jason Merrill has contributed a port to the Sequent Symmetry running
2404 Dynix version 3 (i386-sequent-dynix).
2406 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2407 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2409 * New function `memory_warnings' lets you arrange to get warnings when
2410 malloc is running out of memory to allocate, like Emacs gives you.
2412 * The C library now contains the relocating allocator used in Emacs 19 for
2413 its editing buffers. This allocator (ralloc) minimizes allocation
2414 overhead and fragmentation by moving allocated regions around whenever it
2415 needs to. You always refer to a ralloc'd region with a "handle" (a
2416 pointer to a pointer--an object of type `void **').
2418 * There is a new `printf' format: `%m' gives you the string corresponding
2419 to the error code in `errno'.
2421 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2422 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2423 pass, the `a' modifier says to fill in a `char **' you pass with a
2426 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2427 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2428 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2430 * `mkstemp' is a traditional Unix function to atomically create and open a
2431 uniquely-named temporary file.
2435 * The standard location for the file that says what the local timezone is
2436 has changed again. It is now `/usr/local/etc/localtime' (or more
2437 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2439 * The distribution no longer contains any files with names longer than 14
2442 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2443 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2445 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2449 * The configuration process has changed quite a bit. The `configure'
2450 script is now used just like the configuration scripts for other GNU
2451 packages. The `sysdeps' directory hierarchy is much rearranged.
2452 The file `INSTALL' explains the new scheme in detail.
2454 * The header files no longer need to be processed into ANSI C and
2455 traditional C versions. There is just one set of files to install, and
2456 it will work with ANSI or old C compilers (including `gcc -traditional').
2458 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2459 MIPS DECStation running Ultrix 4.
2461 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2462 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2463 made itself into a shared library.
2465 * Yet further improved support for the i386, running 4.3 BSD-like systems
2466 (such as Mach 3 with the Unix single-server), or System V.
2468 * New function `strncasecmp' to do case-insensitive string comparison
2469 with limited length.
2471 * New function `strsep' is a reentrant alternative to `strtok'.
2473 * New functions `scandir' and `alphasort' for searching directories.
2475 * New function `setenv' is a better interface to `putenv'.
2477 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2478 function for traversing a directory tree.
2480 * The GNU obstack package is now also part of the C library.
2481 The new function `open_obstack_stream' creates a stdio stream that
2482 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2483 formatted output directly to an obstack.
2485 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2486 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2488 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2490 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2491 things to your strings.
2493 * There are some new test programs: test-fseek, testmb, and testrand.
2495 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2496 These ports are not finished, but are a good starting place for really
2497 supporting those systems.
2499 * `/etc/localtime' is now the standard location for the file that says what
2500 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2501 This follows the general principle that `/etc' is the place for all local
2502 configuration files.
2504 * The C library header files now use `extern "C"' when used by the C++
2505 compiler, so the C library should now work with C++ code.
2507 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2508 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2511 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2512 function which uses the `merge sort' algorithm, and is said to be
2513 significantly faster than the old GNU `qsort' function. Merge sort is
2514 now the standard `qsort' function. The new algorithm can require a lot
2515 of temporary storage; so, the old sorting function is called when the
2516 required storage is not available.
2518 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2519 provides the Unix `crypt' function, plus some other entry points.
2521 * The code and header files taken from 4.4 BSD have been updated with the
2522 latest files released from Berkeley.
2524 ----------------------------------------------------------------------
2525 Copyright information:
2527 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2529 Permission is granted to anyone to make or distribute verbatim copies
2530 of this document as received, in any medium, provided that the
2531 copyright notice and this permission notice are preserved,
2532 thus giving the recipient permission to redistribute in turn.
2534 Permission is granted to distribute modified versions
2535 of this document, or of portions of it,
2536 under the above conditions, provided also that they
2537 carry prominent notices stating who last changed them.
2540 version-control: never
projects / platform / upstream / linaro-glibc.git / blob