1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2014 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
10 * The following bugs are resolved with this release:
12 6652, 12926, 14132, 14138, 14171, 15215, 15884, 17266, 17344, 17363,
13 17370, 17371, 17411, 17460, 17475, 17485, 17501, 17506, 17508, 17522,
14 17555, 17570, 17571, 17572, 17573, 17574, 17582, 17583, 17584, 17585,
17 * The minimum GCC version that can be used to build this version of the GNU
18 C Library is GCC 4.6. Older GCC versions, and non-GNU compilers, can
19 still be used to compile programs using the GNU C Library.
21 * New locales: tu_IN, bh_IN.
23 * The obsolete sigvec function has been removed. This was the original
24 4.2BSD interface that inspired the POSIX.1 sigaction interface, which
25 programs have been using instead for about 25 years. Of course, ABI
26 compatibility for old binaries using sigvec remains intact.
30 * The following bugs are resolved with this release:
32 6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15132, 15347, 15514,
33 15698, 15804, 15894, 15946, 16002, 16064, 16095, 16194, 16198, 16275,
34 16284, 16287, 16315, 16348, 16349, 16354, 16357, 16362, 16447, 16516,
35 16532, 16539, 16545, 16561, 16562, 16564, 16574, 16599, 16600, 16609,
36 16610, 16611, 16613, 16619, 16623, 16629, 16632, 16634, 16639, 16642,
37 16648, 16649, 16670, 16674, 16677, 16680, 16681, 16683, 16689, 16695,
38 16701, 16706, 16707, 16712, 16713, 16714, 16724, 16731, 16739, 16740,
39 16743, 16754, 16758, 16759, 16760, 16770, 16786, 16789, 16791, 16796,
40 16799, 16800, 16815, 16823, 16824, 16831, 16838, 16839, 16849, 16854,
41 16876, 16877, 16878, 16882, 16885, 16888, 16890, 16892, 16912, 16915,
42 16916, 16917, 16918, 16922, 16927, 16928, 16932, 16943, 16958, 16965,
43 16966, 16967, 16977, 16978, 16984, 16990, 16996, 17009, 17022, 17031,
44 17042, 17048, 17050, 17058, 17061, 17062, 17069, 17075, 17078, 17079,
45 17084, 17086, 17088, 17092, 17097, 17125, 17135, 17137, 17150, 17153,
46 17187, 17213, 17259, 17261, 17262, 17263, 17319, 17325, 17354.
48 * Optimized strchrnul implementation for AArch64. Contributed by ARM Ltd.
50 * Reverted change of ABI data structures for s390 and s390x:
51 On s390 and s390x the size of struct ucontext and jmp_buf was increased in
52 2.19. This change is reverted in 2.20. The introduced 2.19 symbol versions
53 of getcontext, setjmp, _setjmp, __sigsetjmp, longjmp, _longjmp, siglongjmp
54 are preserved pointing straight to the same implementation as the old ones.
55 Given that, new callers will simply provide a too-big buffer to these
56 functions. Any applications/libraries out there that embed jmp_buf or
57 ucontext_t in an ABI-relevant data structure that have already been rebuilt
58 against 2.19 headers will have to rebuilt again. This is necessary in any
59 case to revert the breakage in their ABI caused by the glibc change.
61 * Support for file description locks is added to systems running the
62 Linux kernel. The standard file locking interfaces are extended to
63 operate on file descriptions, not file descriptors, via the use of
64 F_OFD_GETLK, F_OFD_SETLK, and F_OFD_SETLKW. File description locks
65 are associated with an open file instead of a process.
67 * Optimized strchr implementation for AArch64. Contributed by ARM Ltd.
69 * The minimum Linux kernel version that this version of the GNU C Library
70 can be used with is 2.6.32.
72 * Running the testsuite no longer terminates as soon as a test fails.
73 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
74 with PASS or FAIL lines for individual tests. A summary of the results is
75 printed, including a list of failing lists, and "make check" exits with
76 error status if there were any unexpected failures. "make check
77 stop-on-test-failure=y" may be used to keep the old behavior.
79 * The am33 port, which had not worked for several years, has been removed
82 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
83 supported; they now act the same as _DEFAULT_SOURCE (but generate a
84 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
85 conflicted with POSIX (support for which was removed in 2.19), the
86 interfaces those macros enabled remain available when compiling with
87 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
90 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
92 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
93 This may improve lock scaling of existing programs on TX capable systems.
94 The lock elision code is only built with --enable-lock-elision=yes and
95 then requires a GCC version supporting the TX builtins. With lock elision
96 default mutexes are elided via __builtin_tbegin, if the cpu supports
97 transactions. By default lock elision is not enabled and the elision code
100 * CVE-2014-4043 The posix_spawn_file_actions_addopen implementation did not
101 copy the path argument. This allowed programs to cause posix_spawn to
102 deference a dangling pointer, or use an unexpected pathname argument if
103 the string was modified after the posix_spawn_file_actions_addopen
106 * All supported architectures now use the main glibc sysdeps directory
107 instead of some being in a separate "ports" directory (which was
108 distributed separately before glibc 2.17).
110 * The NPTL implementation of POSIX pthreads is no longer an "add-on".
111 On configurations that support it (all Linux configurations), it's now
112 used regardless of the --enable-add-ons switch to configure. It is no
113 longer possible to build such configurations without pthreads support.
115 * Locale names, including those obtained from environment variables (LANG
116 and the LC_* variables), are more tightly checked for proper syntax.
117 setlocale will now fail (with EINVAL) for locale names that are overly
118 long, contain slashes without starting with a slash, or contain ".." path
119 components. (CVE-2014-0475) Previously, some valid locale names were
120 silently replaced with the "C" locale when running in AT_SECURE mode
121 (e.g., in a SUID program). This is no longer necessary because of the
124 * On x86-64, the dynamic linker's lazy-binding support is now compatible
125 with application code using Intel MPX instructions. (With all previous
126 versions, the MPX register state could be clobbered when making calls
127 into or out of a shared library.) Note that while the new dynamic
128 linker is compatible with all known x86 hardware whether or not it
129 supports Intel MPX, some x86 instruction-set emulators might fail to
130 handle the new instruction encodings. This is known to affect Valgrind
131 versions up through 3.9 (but will be fixed in the forthcoming 3.10
132 release), and might affect other tools that do instruction emulation.
134 * Support for loadable gconv transliteration modules has been removed.
135 The support for transliteration modules has been non-functional for
136 over a decade, and the removal is prompted by security defects. The
137 normal gconv conversion modules are still supported. Transliteration
138 with //TRANSLIT is still possible, and the //IGNORE specifier
139 continues to be supported. (CVE-2014-5119)
141 * Decoding a crafted input sequence in the character sets IBM933, IBM935,
142 IBM937, IBM939, IBM1364 could result in an out-of-bounds array read,
143 resulting a denial-of-service security vulnerability in applications which
144 use functions related to iconv. (CVE-2014-6040)
148 * The following bugs are resolved with this release:
150 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
151 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
152 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
153 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
154 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
155 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
156 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
157 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
158 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
159 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
160 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
161 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
162 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
163 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
164 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
165 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
166 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
167 16431, 16453, 16474, 16506, 16510, 16529
169 * Slovenian translations for glibc messages have been contributed by the
170 Translation Project's Slovenian team of translators.
172 * The public headers no longer use __unused nor __block. This change is to
173 support compiling programs that are derived from BSD sources and use
174 __unused internally, and to support compiling with Clang's -fblock
175 extension which uses __block.
177 * CVE-2012-4412 The strcoll implementation caches indices and rules for
178 large collation sequences to optimize multiple passes. This cache
179 computation may overflow for large collation sequences and may cause a
180 stack or buffer overflow. This is now fixed to use a slower algorithm
181 which does not use a cache if there is an integer overflow.
183 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
184 rules for large collation sequences to optimize multiple passes and falls
185 back to alloca if malloc fails, resulting in a possible stack overflow.
186 The implementation now falls back to an uncached collation sequence lookup
189 * CVE-2013-4788 The pointer guard used for pointer mangling was not
190 initialized for static applications resulting in the security feature
191 being disabled. The pointer guard is now correctly initialized to a
192 random value for static applications. Existing static applications need
193 to be recompiled to take advantage of the fix (bug 15754).
195 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
196 to the d_name member of struct dirent, or omit the terminating NUL
197 character. (Bugzilla #14699).
199 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
200 aligned_alloc functions could allocate too few bytes or corrupt the
201 heap when passed very large allocation size values (Bugzilla #15855,
204 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
205 for AF_INET6 has been fixed (Bugzilla #16072).
207 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
208 pap_CW, quz_PE, the_NP.
210 * Substantially revised locales: gd_GB, ht_HT
212 * The LC_ADDRESS field was updated to support country_car for almost all
215 * ISO 1427 definitions were updated.
217 * ISO 3166 definitions were updated.
219 * The localedef utility now supports --big-endian and --little-endian
220 command-line options to generate locales for a different system from that
221 for which the C library was built.
223 * Binary locale files now only depend on the endianness of the system for
224 which they are generated and not on other properties of that system. As a
225 consequence, binary files generated with new localedef may be incompatible
226 with old versions of the GNU C Library, and binary files generated with
227 old localedef may be incompatible with this version of the GNU C Library,
228 in the following circumstances:
230 + Locale files may be incompatible on m68k systems.
232 + Locale archive files (but not separate files for individual locales) may
233 be incompatible on systems where plain "char" is signed.
235 * The configure option --disable-versioning has been removed. Builds with
236 --disable-versioning had not worked for several years.
238 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
239 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
241 * SystemTap probes for malloc have been introduced.
243 * SystemTap probes for slow multiple precision fallback paths of
244 transcendental functions have been introduced.
246 * Support for powerpc64le has been added.
248 * The soft-float powerpc port now supports e500 processors.
250 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
252 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
253 set of header declarations that are enabled by default, even when other
254 feature test macros or compiler options such as -std=c99 would otherwise
255 disable some of those declarations.
257 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
258 conflict with POSIX. The libbsd-compat library (which was a dummy library
259 that did nothing) has also been removed.
261 * Preliminary documentation about Multi-Thread, Async-Signal and
262 Async-Cancel Safety has been added.
264 * Change of ABI data structures for s390 and s390x:
265 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
266 allow for future hardware extensions. All library functions that accept or
267 return these structures were versioned in order to provide backwards
268 compatibility with existing code. However, not all cases can be handled
269 with interface versioning. If an application embeds either structure into
270 another structure and that structure is passed to another compilation unit
271 which expects the newer larger-sized object then any access to the new
272 fields will result in undefined behaviour. Similarly any access to fields
273 that were moved by the enlarging of the structures will cause undefined
274 behaviour. To fix the undefined behaviour all objects that are part of the
275 final in-memory image must agree on the size of structures, and this may
276 require recompilation.
280 * The following bugs are resolved with this release:
282 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
283 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
284 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
285 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
286 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
287 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
288 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
289 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
290 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
291 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
292 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
293 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
294 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
297 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
298 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
299 Distributions can re-enable building and using pt_chown via the new configure
300 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
301 considerable security risks and should only be used if the distribution
302 understands and accepts the risks.
304 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
307 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
308 fixed (Bugzilla #15330).
310 * Add support for calling C++11 thread_local object destructors on thread
311 and program exit. This needs compiler support for offloading C++11
312 destructor calls to glibc.
314 * Improved worst case performance of libm functions with double inputs and
317 * Support for priority inherited mutexes in pthread condition variables on
318 non-x86 architectures.
320 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
322 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
324 * Optimized string functions for ARM. Implemented by Will Newton and
327 * Optimized libm functions for SPARC. Implemented by David S. Miller.
329 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
332 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
333 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
335 * Added a benchmark framework to track performance of functions in glibc.
337 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
338 It is based on draft TS 18661 and currently enabled as a GNU extension.
340 * On Linux, the clock function now uses the clock_gettime system call
341 for improved precision, rather than old times system call.
343 * Added support for version-3 tz format files. This is needed when using
344 the tz database release 2013e or later, and affects a few unusual cases --
345 currently only TZ='America/Godthab' for time stamps after 2037.
347 * Added new API functions pthread_getattr_default_np and
348 pthread_setattr_default_np to get and set the default pthread
349 attributes of a process.
351 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
352 This may improve lock scaling of existing programs on TSX capable systems.
353 When the --enable-lock-elision=yes parameter is specified at configure
354 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
357 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
358 availability). Implemented by Ryan S. Arnold.
360 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
364 * The following bugs are resolved with this release:
366 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
367 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
368 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
369 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
370 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
371 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
372 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
373 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
374 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
375 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
376 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
377 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
378 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
379 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
380 14879, 14889, 14893, 14898, 14914.
382 * Optimization of memcpy for MIPS.
384 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
385 EMFILE has been fixed (Bugzilla #14889).
387 * The add-on ports collection is now distributed in the "ports" subdirectory
388 of the main GNU C Library distribution, rather than separately.
390 * Port to ARM AArch64 contributed by Linaro.
392 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
393 Optimized versions of memcpy, memset, and memcmp added for System z10 and
395 Implemented by Andreas Krebbel.
397 * The new function secure_getenv allows secure access to the environment,
398 returning NULL if running in a SUID/SGID process. This function replaces
399 the internal function __secure_getenv.
401 * SystemTap static probes have been added into the dynamic linker.
402 Implemented by Gary Benson.
404 * Optimizations of string functions strstr, strcasestr and memmem.
405 Implemented by Maxim Kuvyrkov.
407 * The minimum Linux kernel version that this version of the GNU C Library
408 can be used with is 2.6.16.
410 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
411 powerpc POWER7. Implemented by Will Schmidt.
413 * New configure option --disable-nscd builds the C library such that it
414 never attempts to contact the Name Service Caching Daemon (nscd).
415 New configure option --disable-build-nscd avoids building nscd itself;
416 this is the default if --disable-nscd is used.
418 * Improved support for cross-compilation, including cross-testing and
419 bootstrap builds without a previously built glibc.
421 * Several testsuite tests are now able to test multiple IFUNC variants of an
422 interface, rather than just testing the one that would be chooen by
425 * New configure options --with-bugurl and --with-pkgversion, for
426 distributors to use to embed their bug-reporting and package version
427 information in --help and --version output.
429 * The ttyname and ttyname_r functions on Linux now fall back to searching for
430 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
431 allows creation of chroots without the procfs mounted on /proc.
433 * The `crypt' function now fails if passed salt bytes that violate the
434 specification for those values. On Linux, the `crypt' function will
435 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
436 enabled, and fail on encrypted strings using the MD5 or DES algorithm
437 when the mode is enabled.
439 * The `clock_*' suite of functions (declared in <time.h>) is now available
440 directly in the main C library. Previously it was necessary to link with
441 -lrt to use these functions. This change has the effect that a
442 single-threaded program that uses a function such as `clock_gettime' (and
443 is not linked with -lrt) will no longer implicitly load the pthreads
444 library at runtime and so will not suffer the overheads associated with
445 multi-thread support in other code such as the C++ runtime library.
447 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
452 * The following bugs are resolved with this release:
454 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
455 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
456 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
457 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
458 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
459 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
460 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
461 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
462 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
463 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
464 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
465 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
466 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
467 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
468 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
469 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
470 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
471 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
472 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
473 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
474 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
475 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
478 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
479 configuring glibc with:
480 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
481 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
482 Implemented by H.J. Lu.
486 + define static_assert
488 + do not declare gets
490 + declare at_quick_exit and quick_exit also for ISO C11
492 + aligned_alloc. NB: The code is deliberately allows the size parameter
493 to not be a multiple of the alignment. This is a moronic requirement
494 in the standard but it is only a requirement on the caller, not the
499 + uchar.h support added
501 + CMPLX, CMPLXF, CMPLXL added
503 Implemented by Ulrich Drepper.
505 * Support for the IA-64 has been moved to ports.
507 * Remove support for anything but ELF binary format
509 * Checking versions of poll, ppoll added.
510 Implemented by Ulrich Drepper.
512 * More generic and 64-bit performance optimizations to math functions.
513 Implemented by Ulrich Drepper.
515 * New configure option --enable-obsolete-rpc makes the deprecated RPC
516 headers and functions available at compile time as they were before
517 version 2.14. This option will be removed at some time in the future
518 after the TI-RPC library becomes fully sufficient for the needs of
519 existing applications.
521 * Compatibility code for Linux kernel versions before 2.4 has been removed.
522 Note that glibc is not expected to work with any Linux kernel version
525 * New header <sys/auxv.h> and function getauxval allowing easy access to
526 the AT_* key-value pairs passed from the Linux kernel. The header also
527 defines the HWCAP_* bits associated with the AT_HWCAP key.
529 * New locales: mag_IN
531 * New configure option --enable-systemtap builds SystemTap static probes
532 into libc for setjmp and longjmp and into libpthread for various operations.
533 So far the setjmp/longjmp probes and some of the libpthread probes are
534 provided only for i*86 and x86_64.
535 Implemented by Roland McGrath and Rayson Ho.
537 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
539 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
542 * More optimized functions for SPARC. Implemented by David S. Miller.
544 * Improved support for cross-compilation, especially bootstrap builds
545 without a previously built glibc.
547 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
548 Chris Metcalf from Tilera.
550 * Support for the old ARM ABI has been removed from ports. Only the EABI is
551 now supported for ARM processors.
553 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
554 as the name of the dynamic linker, to distinguish it from the
555 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
557 * Support for CRIS has been removed from ports.
559 * A new class of installed header has been documented for low-level
560 platform-specific functionality. PowerPC added the first instance with a
561 function to provide time base register access. Contributed by Tulio
562 Magno Quites Machado Filho.
564 * ix86 configurations now install header files that are consistent with
565 what x86-64 configurations install. These same header files can be used
566 for -m32, -m64, or -mx32 builds.
567 Contributed by H.J. Lu.
569 * Math library bug fixes. A thorough audit of all open math library bugs was
570 conducted by Joseph Myers. Significant progress was made on many math
571 library bugs resulting in more accurate exceptions and function results.
572 Many thanks to all those that contributed including Andreas Jaeger for his
573 patch review and work on the x87 trigonometric instruction issues.
575 * Timezone data is no longer installed. Timezone-related binaries and scripts
576 will continue to be installed. Users should obtain their timezone data from
577 their distribution provider or from the tzdata package at
578 <ftp://munnari.oz.au/pub/>.
582 * The following bugs are resolved with this release:
584 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
585 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
586 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
587 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
588 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
589 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
590 13484, 13506, 13515, 13523, 13524, 13538, 13540
592 * New program pldd to list loaded object of a process
593 Implemented by Ulrich Drepper.
595 * Add nss_db support back to glibc. No more dependency on Berkeley db
596 and support for initgroups lookups.
597 Implemented by Ulrich Drepper.
599 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
600 Contributed by HJ Lu.
602 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
603 Contributed by HJ Lu.
605 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
606 on x86-32 and x86-64.
607 Contributed by Liubov Dmitrieva.
609 * Optimized strchr and strrchr for SSE on x86-32.
610 Contributed by Liubov Dmitrieva.
612 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
613 for x86-64 and x86-32.
614 Contributed by Liubov Dmitrieva.
616 * New interfaces: scandirat, scandirat64
617 Implemented by Ulrich Drepper.
619 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
620 Implemented by Ulrich Drepper.
622 * nscd now also caches the netgroup database.
623 Implemented by Ulrich Drepper.
625 * Integrate libm with gcc's -ffinite-math-only option.
626 Implemented by Ulrich Drepper.
628 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
629 to math functions. Implemented by Ulrich Drepper.
631 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
632 Implemented by Ulrich Drepper.
634 * New Linux interfaces: process_vm_readv, process_vm_writev
636 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
637 Implemented by Ulrich Drepper.
639 * Optimized nearbyint and strcasecmp for PPC.
640 Implemented by Adhemerval Zanella.
642 * New locales: bho_IN, unm_US, es_CU, ta_LK
646 * The following bugs are resolved with this release:
648 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
649 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
650 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
651 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
652 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
653 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
654 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
655 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
656 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
657 12795, 12811, 12813, 12814, 12841
659 * The RPC implementation in libc is obsoleted. Old programs keep working
660 but new programs cannot be linked with the routines in libc anymore.
661 Programs in need of RPC functionality must be linked against TI-RPC.
662 The TI-RPC implementation is IPv6 enabled and there are other benefits.
664 Visible changes of this change include (obviously) the inability to link
665 programs using RPC functions without referencing the TI-RPC library and the
666 removal of the RPC headers from the glibc headers.
667 Implemented by Ulrich Drepper.
669 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
670 syncfs, setns, sendmmsg
672 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
673 yue_HK, lij_IT, mhr_RU
675 * New encodings: CP770, CP771, CP772, CP773, CP774
677 * New program sotruss to trace calls through PLTs
678 Implemented by Ulrich Drepper.
680 * The malloc hook implementation is marked deprecated and will be removed
681 from the default implementation in the next version. The design never
682 worked ever since the introduction of threads. Even programs which do
683 not create threads themselves can use multiple threads created internally.
687 * The following bugs are resolved with this release:
689 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
690 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
691 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
692 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
695 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
697 * POWER7 optimizations: memset, memcmp, strncmp
699 * New optimized string functions for x86-64: strnlen (SSE2),
700 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
701 Implemented by Ulrich Drepper.
705 * The following bugs are resolved with this release:
707 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
708 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
709 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
710 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
711 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
712 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
713 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
714 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
716 * New interfaces: pthread_getname_np, pthread_setname_np
718 * New Linux interface: recvmmsg
720 * STT_GNU_IFUNC implemented for Sparc by David Miller.
722 * The dynamic linker now recognizes supported ABI versions from the
723 EI_ABIVERSION field in the ELF header.
724 Implemented by Ulrich Drepper.
726 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
727 will not be used to fill in password fields in the passwd.byname replies.
728 Instead it is used to synthesize the shadow.byname table, should it be
729 missing. This is a useful mode in some installations involving Solaris.
730 Implemented by Ulrich Drepper.
732 * New locales: kok_IN, sq_MK, cv_RU
736 * The following bugs are resolved with this release:
738 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
739 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
740 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
741 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
742 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
743 10789, 10817, 10823, 10840, 10847
745 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
747 Implemented by Ulrich Drepper.
749 * Checking version of longjmp added that fails if an uninitialized stack
750 frame would be created. Implemented by Ulrich Drepper.
752 * STT_GNU_IFUNC is now supported in static executables.
753 Implemented by H.J. Lu.
755 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
757 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
758 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
759 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
760 Contributed by H.J. Lu.
762 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
763 Implemented by Ulrich Drepper.
765 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
767 Contributed by H.J. Lu.
769 * Support for fma instruction in AVX on x86-64.
770 Implemented by H.J. Lu and Ulrich Drepper.
772 * AVX support in x86-64 auditing support in ld.so.
773 Implemented by H.J. Lu.
775 * STB_GNU_UNIQUE support added.
776 Implemented by Ulrich Drepper.
778 * Implement second fallback mode for optimized DNS lookup for even more
779 broken environments. If two requests from the same port are not
780 handled correctly close the socket and open a new one before sending
781 the second request. The 'single-request-reopen' option in /etc/resolv.conf
782 can be used to select this mode right away, instead of rediscovering the
783 necessity is every process again.
784 Implemented by Ulrich Drepper.
786 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
787 Implemented by Adam Tkac.
789 * Optimized iconv conversions for S390x.
790 Implemented by Andreas Krebbel.
792 * Using condvars with PI mutexes is now more efficient due to kernel
793 support for requeueing to PI futexes. NPTL support added for x86-64.
794 Implemented by Ulrich Drepper.
796 * New locales: ps_AF, my_MM
800 * The following bugs are resolved with this release:
802 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
803 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
804 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
805 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
806 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
808 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
809 Implemented by Ulrich Drepper.
811 * New Linux interfaces: accept4, fallocate, fallocate64.
812 Implemented by Ulrich Drepper.
814 * Correct declarations of string function when used in C++ code. This
815 could lead to compile errors for invalid C++ code.
817 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
820 * New POSIX 2008 interface: psiginfo
821 Implemented by Ulrich Drepper.
823 * New ISO C++1x interfaces: quick_exit, at_quick_exit
824 Implemented by Ulrich Drepper.
826 * Support for selecting between multiple function definitions at runtime
827 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
829 * The libcrypt library can now use the hash function implementations in
830 NSS. Implemented by Ulrich Drepper.
832 * The malloc implementation can be compiled to be less memory efficient
833 but higher performing in multi-threaded programs.
834 Implemented by Ulrich Drepper.
836 * New locales: nan_TW@latin, ks_IN
838 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
839 Implemented by Ulrich Drepper.
841 * Extended printf hook support. It is possible to use user-defined types
842 and extend existing format specifiers.
843 Implemented by Ulrich Drepper.
845 * Handling for group shadow files has been added.
846 Implemented by Ulrich Drepper.
848 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
849 servers (the case, e.g., for some people using the built-in DNS
850 server in ADSL modems/routers). There is a once-per-process timeout
851 in case of a broken server. To avoid it, users can run nscd or put
852 'options single-request' in /etc/resolv.conf.
853 Implemented by Ulrich Drepper.
857 * The following bugs are resolved with this release:
859 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
860 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
861 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
862 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
863 6968, 6974, 6980, 6995, 7008, 7009, 7029
865 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
866 up at the same time. Implemented by Ulrich Drepper.
868 * TLS descriptors for LD and GD on x86 and x86-64.
869 Implemented by Alexandre Oliva.
871 * getaddrinfo now handles DCCP and UDPlite.
872 Implemented by Ulrich Drepper.
874 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
875 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
876 Implemented by Ulrich Drepper.
878 * New implementation of memmem, strstr, and strcasestr which is O(n).
879 Implemented by Eric Blake.
881 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
883 * Implement "e" option for popen to open file descriptor with the
884 close-on-exec flag set. Implemented by Ulrich Drepper.
886 * Implement "b" mode for fmemopen. In this mode writes writes don't
887 implicitly add a NUL byte and seeks from the end of the buffer really
888 use the buffer end, not the string length as the basis.
889 Implemented by Ulrich Drepper.
891 * Many functions, exported and internal, now atomically set the close-on-exec
892 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
894 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
896 Implemented by Pravin Satpute.
898 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
902 * The following bugs are resolved with this release:
904 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
905 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
906 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
907 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
908 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
909 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
910 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
912 * New locales: bo_CN, bo_IN, shs_CA.
914 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
916 * Sorting rules for some Indian languages (Devanagari and Gujarati).
917 Implemented by Pravin Satpute.
919 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
921 * nscd caches now all timeouts for DNS entries
922 Implemented by Ulrich Drepper.
924 * nscd is more efficient and wakes up less often.
925 Implemented by Ulrich Drepper.
927 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
928 vdprintf, and obstack_vprintf.
929 Implemented by Jakub Jelinek.
931 * Faster memset for x86-64.
932 Implemented by Harsha Jagasia and H.J. Lu.
934 * Faster memcpy on x86.
935 Implemented by Ulrich Drepper.
937 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
938 Implemented by Ulrich Drepper.
940 * Faster sqrt and sqrtf implemention for some PPC variants.
941 Implemented by Steven Munroe.
945 * The following bugs are resolved with this release:
947 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
948 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
949 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
950 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
951 5071, 5103, 5104, 5112, 5113, 5184, 5186
953 * More checking functions: fread, fread_unlocked, open*, mq_open.
954 Implemented by Jakub Jelinek and Ulrich Drepper.
956 * Extend fortification to C++. Implemented by Jakub Jelinek.
958 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
959 by not recognizing 'a' as a modifier when those specs are requested.
960 Implemented by Jakub Jelinek.
962 * PPC optimizations to math and string functions.
963 Implemented by Steven Munroe.
965 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
966 options to be passed. Implemented by Ulrich Drepper.
968 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
970 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
971 Implemented by Ulrich Drepper.
973 * Handle private futexes in the NPTL implementation.
974 Implemented by Jakub Jelinek and Ulrich Drepper.
976 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
977 Implemented by Roland McGrath and Ulrich Drepper.
979 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
981 * SHA-256 and SHA-512 based password encryption.
982 Implemented by Ulrich Drepper.
984 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
985 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
988 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
989 Implemented by Ulrich Drepper.
993 * The following bugs are resolved with this release:
995 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
996 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
997 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
998 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
999 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
1000 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
1001 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
1004 * New Linux interfaces: epoll_pwait, sched_getcpu.
1006 * New generic interfaces: strerror_l.
1008 * nscd can now cache the services database. Implemented by Ulrich Drepper.
1012 * The following bugs are resolved with this release:
1014 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
1015 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
1016 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
1017 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
1018 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
1019 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
1020 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
1021 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
1022 3225, 3251, 3252, 3253, 3273
1024 * For Linux, the sorting of addresses returned by getaddrinfo now also
1025 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
1026 Implemented by Ulrich Drepper.
1028 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
1029 Implemented by Ulrich Drepper.
1031 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
1033 * New iconv module for MIK. Contributed by Alexander Shopov.
1035 * For sites with broken group and/or passwd database, the auto-propagate
1036 option of nscd can prevent creating ID lookup entries from the results
1037 of a name lookup and vice versa. This usually is no problem but some
1038 site might have problems with the default behavior.
1039 Implemented by Ulrich Drepper.
1041 * Iterating over entire database in NIS can be slow. With the
1042 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
1043 to trade time for memory. The entire database will be read at once.
1044 Implemented by Ulrich Drepper.
1046 * The interfaces introduced in RFC 3542 have been implemented by
1049 * Support for the new ELF hash table format was added by Ulrich Drepper.
1051 * Support for priority inheritance mutexes added by Jakub Jelinek and
1054 * Support for priority protected mutexes added by Jakub Jelinek.
1056 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
1057 or_IN, csb_PL, fy_NL, sr_ME.
1061 * More overflow detection functions.
1063 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
1064 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
1066 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
1067 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
1068 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
1069 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
1070 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
1071 by Masahide Washizawa.
1073 * It is now possible to install audit libraries for the dynamic linker using
1074 LD_AUDIT. Implemented by Ulrich Drepper.
1076 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
1077 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
1078 For a libc and libpthread that works well on Linux 2.4 kernels, we
1079 recommend using the stable 2.3 branch.
1081 * The new function open_wmemstream acts like open_memstream,
1082 but uses a wchar_t wide character buffer.
1084 * The new function ppoll is an improved version of poll, similar to pselect.
1086 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
1087 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
1088 renameat, unlinkat, linkat, symlinkat, readlinkat.
1090 * New Linux kernel system calls: unshare,
1091 inotify_init, inotify_add_watch, inotify_rm_watch.
1093 * The euidaccess function is now also known by the alias eaccess,
1094 for compatibility with some other systems.
1096 * Timezone data updated to 2006b version.
1100 * The following bugs are resolved with this release:
1102 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1103 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1104 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1105 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1106 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1107 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1109 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1111 * As of this release, GCC 4 can be used to compile the C Library.
1113 * Timezone data updated to 2005m version.
1117 * The following bugs are resolved with this release:
1119 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1120 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1121 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1122 777, 787, 821, 822, 823, 825
1124 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1128 * Support for RFC 3678. Real implementations exist only for Linux so far.
1129 Implemented by Ulrich Drepper.
1131 * nscd can now cache entries persistently. Expiring entries are reloaded.
1132 For speedups the cache can be shared in memory with client processes.
1133 Implemented by Ulrich Drepper.
1135 * nscd can now perform SELinux checks.
1136 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1138 * getaddrinfo queries are now cached. Canonical name lookup is performed
1140 Implemented by Ulrich Drepper.
1142 * The nothrow function attribute is used when headers are used by gcc when
1143 compiling C code. This can avoid significant amounts of exception
1146 * The malloc functions perform more error checking and are stricter when
1147 it comes to reacting on errors. The default action is to terminate
1148 the process after showing an error message. Implemented by Ulrich Drepper.
1150 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1151 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1153 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1154 namespaces using the new function dlmopen(). This feature is of course,
1155 like most other dynamic loading functionality, not available in statically
1156 linked applications. Implemented by Ulrich Drepper.
1158 * Low-overhead boundary checking variants of string and some stdio functions
1159 were added. These are to be used in conjunction with a gcc patch by
1160 Jakub Jelinek which adds calls to these functions if possible.
1161 Implemented by Jakub Jelinek and Ulrich Drepper.
1163 * Old code for several operating systems and machine architectures that
1164 have not been in working condition in a long time have been removed from
1165 the main source tree maintained by the GNU C Library's maintainers.
1166 These files are now reside in the separate `ports' source module
1167 that is usable as an add-on when building the library.
1171 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1172 interrogate the dynamic linker, compatible with the Solaris interface.
1174 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1175 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1177 * getifaddrs now uses the netlink interface on Linux to get its information.
1178 Implemented by Thorsten Kukuk.
1180 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1181 Implemented by Ulrich Drepper.
1183 * support for non-executable stacks on x86 has been added. Changes mostly
1186 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1189 * getaddrinfo now performs destination address selection according to
1194 * Thread-safe interfaces for many functions that access locale data
1195 were added in version 2.3, but these features were omitted from NEWS.
1196 Many functions have variants with an `_l' suffix that take a `locale_t'
1197 object as a parameter rather than consulting the current locale.
1198 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1199 create and maintain `locale_t' objects. Additionally, the new function
1200 `uselocale' sets "the current locale" (as used by functions not so
1201 parameterized) set for an individual thread. These features were added
1202 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1204 * The functions getresuid, getresgid, setresuid, and setresgid, which
1205 have long been available on Linux, are now declared in <unistd.h>
1206 and are now also available on the Hurd.
1208 * ELF thread-local storage support (TLS) now works on x86-64.
1210 * The new dynamic string token $LIB is expanded in shared library names.
1211 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1213 * Aldy Hernandez contributed complete software floating point support for
1214 PowerPC machines with no FPU.
1216 * fexecve is implemented on Linux.
1218 * The `btowc' function should work at least twice as fast due to
1219 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1221 * With approriate thread add-ons cancelable functions are now implemented
1222 in libc.so as well. No need to call the function in libpthread. This
1223 change allowed to finally disable the incorrect and expensive handling
1224 of weak definition in ld.so.
1226 * Yet more PLT entries in libc.so have been removed. We finally arrived
1227 at the bare minimum. Startup times improved appropriately.
1229 * Support for the new Linux/x86 system call interface was added. The
1230 AT_SYSINFO auxiliary vector entry is recognized and handled.
1234 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1237 * iconv (the program and the interface) now accepts empty names (excluding
1238 options like //TRANSLIT) to mean "use charset of current locale".
1240 * localedef can now transliterate characters in strings which are not in
1241 the provided charmap. The information from the input locale is used.
1243 * Prelinking support was added for ELF targets. This requires additional
1244 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1246 * Read-only stdio streams now use mmap to speed up operation by eliminating
1247 copying and buffer underflows. To use add 'm' to the mode string of
1248 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1250 * The malloc functions were completely rewritten by Wolfram Gloger based
1251 on Doug Lea's malloc-2.7.0.c.
1253 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1254 implementation of regex.
1256 * Bruno Haible upgraded the iconv and locale implementation to support
1259 * Contents of the LC_* and LANG environment variables in the CEN style are
1260 not recognized anymore. It never was used. Change by Ulrich Drepper.
1262 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1263 thread-local storage (TLS) ABI on some platforms.
1264 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1266 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1267 EUC-JISX0213, and TSCII.
1269 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1270 BSD-compatible interface for getting all network interface addresses.
1271 Implementation for IPv4 by Roland McGrath.
1273 * Loading of locale data is faster due to the introduction of a locale
1274 archive. Implemented by Roland McGrath and Ulrich Drepper.
1276 * Startup times are significantly reduced by not using exported functions
1277 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1280 * Steven Munroe contributed a port to PowerPC64/Linux.
1284 * The Hurd now uses the GNU libio implementation of stdio rather than the
1285 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1287 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1288 with the same behavior as the Linux system call of the same name.
1292 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1293 128-bit long double format.
1295 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1296 IBM1161, and IBM1162 charsets.
1298 * Andreas Jaeger contributed a port to x86-64/Linux.
1300 * Peter Bruin contributed a port to PowerPC/Hurd.
1302 * libc functions using I/O streams now can handle wide-oriented streams
1305 * optimizations in the dynamic linker. Binaries created by recent binutils
1306 versions start up quicker due to reduced time spent on relocations.
1308 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1312 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1313 asinh, atanh, j0 for the 128-bit long double format.
1315 * Bruno Haible updated all the code handling Unicode in some form to
1316 support Unicode 3.1.
1318 * Speed of regex for single-byte locales is back to previous levels.
1319 Patch by Isamu Hasegawa.
1321 * Alpha, SPARC, and IA-64 now also using floating stacks.
1323 * Startup time of internationalized applications greatly improved through
1324 iconv cache. Use iconvconfig to generate the cache file.
1325 Contributed by Ulrich Drepper.
1327 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1328 severe performance problems. Patch by David Mosberger.
1330 * The Hurd port got a lot more functionality like AIO, various stdio
1331 extensions, etc. Mainly done by Roland McGrath.
1333 * mtrace can now lookup symbols in shared libraries.
1337 * Intel's IA-64 math library is largely integrated. It provides fast and
1338 accurate implementatations for most basic and standard math functions
1339 in float, double, and long double format.
1341 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1342 and asin for the 96-bit long double format and asin, log, tan for the
1343 128-bit long double format.
1345 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1346 The basic double functions exist today. Contributed by Abraham Ziv
1347 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1348 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1350 * An asynchronous name lookup library was added. The interface is designed
1351 after POSIX AIO. The proposal was circulated beforehand to get comments.
1352 No negative ones came in. Implemented by Ulrich Drepper.
1354 * Port to S390/64bit contributed by Martin Schwidefsky
1355 <schwidefsky@de.ibm.com>.
1357 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1358 of functions for Linux/IA-64.
1360 * The RPC code is now thread safe. Threads can now use the same service
1361 of different services at the same time. Patch by Eric Norum
1362 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1364 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1365 family of functions for Linux/S390.
1367 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1368 of functions for Linux/x86.
1370 * Port to Linux/CRIS contributed by Axis Communications.
1374 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1375 we can now check for namespace violations and missing declarations. The
1376 result is that almost all headers are now Unix-compliant (as defined in
1377 the upcoming XPG6). The negative side is that some programs might need
1378 corrections, too, if they depend on the incorrect form of the headers in
1379 previous versions which defined too many symbols and included too many
1382 * regex now handles multibyte character sets correctly.
1383 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1385 * iconv (the program) does now conform to the upcoming XPG6 and handles
1386 charmaps. Instead of the charset names the path of charmaps can be
1387 provided and the conversion happens based on this data.
1388 Contributed by Ulrich Drepper.
1390 * The locale program now provides detailed information about the installed
1395 only lists the names of the supported locales
1399 provides details such as country, language, and codeset name.
1400 Contributed by Ulrich Drepper.
1404 * The gencat program now parses the input file according to the charset
1405 selected by the LC_CTYPE category. This is important for stateful
1406 character sets. To make generating catalogs easier there is a way
1407 to overwrite the charset selected by the locale: before the first
1408 message or $ quote line the catalog can contain a line like
1410 $ codeset=ISO-8859-2
1412 to select the charset (ISO-8859-2 in this case).
1414 Implemented by Shinya Hanataka and Ulrich Drepper.
1416 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1417 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1418 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1420 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1421 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1423 * The LANGUAGE environment variable is now ignored unless the locale is
1424 changed from the default "C" locale.
1426 * The usual bug fixes.
1430 * Greg McGary added runtime support for bounds checking using gcc's
1431 new -fbounded-pointers option. ix86 target is complete. PowerPC
1434 * Thorsten Kukuk added secure mode support to nscd.
1436 * The Berkeley db libraries have been removed.
1438 Related, the nss_db module is now in a separate package since it
1439 obviously requires a database library being available.
1441 * Wide character I/O streams implemented by Ulrich Drepper.
1443 * Functions from the extended socket API added by Ulrich Drepper.
1445 * Functions feenableexcept and fedisableexcept to control the
1446 behaviour of individual exceptions have been added by Andreas Jaeger.
1448 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1450 * The resolver code has been updated from bind 8.2.3-T5B which supports
1451 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1454 This change could in some situations effect backward compatibility. Since
1455 now `_res' is a thread-local instead of a global variable, modifying it
1456 in one thread does not have any effect in other threads.
1458 The resolver library was also extended to allow IPv6 as the transport
1459 protocol for the requests. This work was done by Stig Venaas.
1461 * Compatibility code for K&R C compilers has been removed from the
1462 header files. A ISO C compiler is needed to use the library
1463 (conforming to either C89 or C99 standard).
1465 * Complete rewrite of the localedef program to support multibyte character
1466 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1467 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1468 Implemented by Ulrich Drepper.
1470 Bruno Haible significantly improved the generation and use of the data
1471 structures for the wide character tables.
1473 * Plural handling in gettext implemented by Ulrich Drepper.
1475 * The utmp daemon has been removed.
1477 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1479 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1482 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1484 * POSIX barriers implemented by Kaz Kylheku.
1486 * POSIX spawn function family implemented by Ulrich Drepper.
1488 * POSIX spinlocks are now available.
1490 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1492 * the configure option --enable-kernel=X.Y.Z allows to strip out
1493 compatibility for kernel versions before X.Y.Z. This is currently only
1494 implemented for Linux.
1496 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1497 field sin6_scope_id. This means that all programs using IPv6 should be
1498 recompiled. Don't expect binary compatibility with previous glibc
1501 * various conversion modules for IBM character sets contributed by
1504 * IA-64 port by Jes Sorensen and HJ Lu.
1518 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1520 * New xdr functions are added; some rpc functions are now 64bit clean.
1522 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1524 * Fixed known incompatibilities with glibc 2.0.
1526 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1528 * Optimized a number of functions (especially the ELF dynamic loader).
1530 * Update timezone data files.
1532 * lots of charmaps corrections
1534 * some new locale definitions and charmaps
1539 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1540 conform to POSIX member type requirements. Symbol versions have been
1541 adjusted as needed within the library, and for direct use by applications,
1542 but there is potential for problems if third-party libraries use
1543 struct timeval as part of their interface. This does not present
1544 a problem for X and other "essential" system libraries.
1546 * An additional locale model to support C++ Standard Library locale
1547 model and probably more was implemented by Ulrich Drepper.
1549 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1552 * Miles Bader provided the `argp' function family to support hierachical
1553 command line argument parsing, layered on top of getopt.
1555 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1557 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1560 * scanf recognizes the %a and %A format for scanning floating point numbers.
1562 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1563 information and interfaces for the available integer types.
1565 * about 130 new math functions were added to implement the ISO C9x math
1568 * the new header <complex.h> contains definitions of the complex math
1569 functions from ISO C 9X.
1571 * the new header <tgmath.h> defines generic macros to use complex or
1572 real valued functions.
1574 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1576 * Andreas Jaeger provided a test suite for the math library.
1578 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1580 * Ulrich Drepper added character set conversion functions (iconv).
1582 * Optimized string functions have been added.
1584 * The localedata addon is now part of glibc.
1586 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1588 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1589 daemon for NSS (nscd).
1591 Missing a better place here are some numbers on improvements. Under
1592 Linux 2.1.125 un-tar-ing the kernel sources takes
1596 using local files 12.19s 6.88s 22.91s
1598 using NIS 13.92s 8.91s 26.34s
1600 using NIS & nscd 10.37s 7.34s 25.30s
1602 using NIS+ 27.57s 30.37s 640.46s
1604 using NIS+ & nscd 10.25s 7.83s 26.51s
1606 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1608 Keep in mind that non-namelookup related operations dominate above times.
1609 It was just a common complain that using NIS+ unpacking the kernel is
1612 [1] The old nscd implementation is not available anymore since it was
1613 distributed with glibc up to version 2.0.98 and thus is now replaced.
1615 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1617 * Mark Kettenis provided a Hesiod NSS module.
1619 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1620 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1622 * rcmd can now handle netgroups (Dick Streefland).
1624 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1627 * Support for the IPv6 protocol has been added to the socket API, as per the
1628 latest draft standards.
1630 * Support for Linux 2.2 has been added.
1632 * Interface changes relative to the latest 2.0.x release:
1633 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1634 addseverity NEW: Unix98
1635 alphasort64 NEW: LFS
1636 argp_err_exit_status NEW: argp, GNU ext
1637 argp_error NEW: argp, GNU ext
1638 argp_failure NEW: argp, GNU ext
1639 argp_help NEW: argp, GNU ext
1640 argp_parse NEW: argp, GNU ext
1641 argp_program_bug_address NEW: argp, GNU ext
1642 argp_program_version NEW: argp, GNU ext
1643 argp_program_version_hook NEW: argp, GNU ext
1644 argp_state_help NEW: argp, GNU ext
1645 argp_usage NEW: argp, GNU ext
1646 authdes_create NEW: Secure RPC
1647 authdes_getucred NEW: Secure RPC
1648 authdes_pk_create NEW: Secure RPC
1649 backtrace NEW: GNU ext.
1650 backtrace_symbols NEW: GNU ext.
1651 backtrace_symbols_fd NEW: GNU ext.
1653 cacosf NEW: ISO C 9x
1654 cacosh NEW: ISO C 9x
1655 cacoshf NEW: ISO C 9x
1656 cacoshl NEW: ISO C 9x
1657 cacosl NEW: ISO C 9x
1664 casinf NEW: ISO C 9x
1665 casinh NEW: ISO C 9x
1666 casinhf NEW: ISO C 9x
1667 casinhl NEW: ISO C 9x
1668 casinl NEW: ISO C 9x
1670 catanf NEW: ISO C 9x
1671 catanh NEW: ISO C 9x
1672 catanhf NEW: ISO C 9x
1673 catanhl NEW: ISO C 9x
1674 catanl NEW: ISO C 9x
1675 cbc_crypt NEW: Secure RPC
1679 ccoshf NEW: ISO C 9x
1680 ccoshl NEW: ISO C 9x
1686 cimagf NEW: ISO C 9x
1687 cimagl NEW: ISO C 9x
1688 clearerr_locked REMOVED
1689 clntunix_create NEW: sunrpc ext
1691 clog10 NEW: ISO C 9x
1692 clog10f NEW: ISO C 9x
1693 clog10l NEW: ISO C 9x
1703 cprojf NEW: ISO C 9x
1704 cprojl NEW: ISO C 9x
1706 crealf NEW: ISO C 9x
1707 creall NEW: ISO C 9x
1712 csinhf NEW: ISO C 9x
1713 csinhl NEW: ISO C 9x
1716 csqrtf NEW: ISO C 9x
1717 csqrtl NEW: ISO C 9x
1721 ctanhf NEW: ISO C 9x
1722 ctanhl NEW: ISO C 9x
1724 des_setparity NEW: Secure RPC
1725 ecb_crypt NEW: Secure RPC
1726 endutxent NEW: Unix98
1728 exp10f NEW: ISO C 9x
1729 exp10l NEW: ISO C 9x
1733 fattach NEW: STREAMS
1734 fdetach NEW: STREAMS
1738 feclearexcept NEW: ISO C 9x
1739 fegetenv NEW: ISO C 9x
1740 fegetexceptflag NEW: ISO C 9x
1741 fegetround NEW: ISO C 9x
1742 feholdexcept NEW: ISO C 9x
1744 feraiseexcept NEW: ISO C 9x
1745 ferror_locked REMOVED
1746 fesetenv NEW: ISO C 9x
1747 fesetexceptflag NEW: ISO C 9x
1748 fesetround NEW: ISO C 9x
1749 fetestexcept NEW: ISO C 9x
1750 feupdateenv NEW: ISO C 9x
1751 fflush_locked REMOVED
1755 fgets_unlocked NEW: GNU ext.
1756 fileno_locked REMOVED
1768 fputc_locked REMOVED
1769 fputs_unlocked NEW: GNU ext.
1770 fread_unlocked NEW: GNU ext.
1775 fstatvfs NEW: Unix98
1779 ftruncate64 NEW: LFS
1781 fwrite_unlocked NEW: GNU ext.
1782 gai_strerror NEW: IPv6
1786 getchar_locked REMOVED
1788 getdate_err NEW: Unix98
1789 getdate_r NEW: GNU ext.
1791 getnameinfo NEW: IPv6
1792 getnetname NEW: Secure RPC
1793 getpmsg NEW: STREAMS
1794 getpt NEW: Unix98 PTY
1795 getrlimit64 NEW: LFS
1796 getutxent NEW: Unix98
1797 getutxid NEW: Unix98
1798 getutxline NEW: Unix98
1799 glob64 NEW: GNU ext.
1800 globfree64 NEW: GNU ext.
1801 gnu_get_libc_release NEW: GNU ext.
1802 gnu_get_libc_version NEW: GNU ext.
1803 grantpt NEW: Unix98 PTY
1804 host2netname NEW: Secure RPC
1806 iconv_close NEW: iconv
1807 iconv_open NEW: iconv
1808 if_freenameindex NEW: IPv6
1809 if_indextoname NEW: IPv6
1810 if_nameindex NEW: IPv6
1811 if_nametoindex NEW: IPv6
1812 in6addr_any NEW: IPv6
1813 in6addr_loopback NEW: IPv6
1814 inet6_isipv4mapped NEW: IPv6
1815 isastream NEW: STREAMS
1816 iswblank NEW: GNU ext.
1817 key_decryptsession NEW: Secure RPC
1818 key_decryptsession_pk NEW: Secure RPC
1819 key_encryptsession NEW: Secure RPC
1820 key_encryptsession_pk NEW: Secure RPC
1821 key_gendes NEW: Secure RPC
1822 key_get_conv NEW: Secure RPC
1823 key_secretkey_is_set NEW: Secure RPC
1824 key_setnet NEW: Secure RPC
1825 key_setsecret NEW: Secure RPC
1826 llrint NEW: ISO C 9x
1827 llrintf NEW: ISO C 9x
1828 llrintl NEW: ISO C 9x
1829 llround NEW: ISO C 9x
1830 llroundf NEW: ISO C 9x
1831 llroundl NEW: ISO C 9x
1836 lrintf NEW: ISO C 9x
1837 lrintl NEW: ISO C 9x
1838 lround NEW: ISO C 9x
1839 lroundf NEW: ISO C 9x
1840 lroundl NEW: ISO C 9x
1842 makecontext NEW: Unix98
1843 mempcpy NEW: GNU ext.
1846 modify_ldt NEW: kernel
1850 nearbyint NEW: ISO C 9x
1851 nearbyintf NEW: ISO C 9x
1852 nearbyintl NEW: ISO C 9x
1853 netname2host NEW: Secure RPC
1854 netname2user NEW: Secure RPC
1855 nexttoward NEW: ISO C 9x
1856 nexttowardf NEW: ISO C 9x
1857 nexttowardl NEW: ISO C 9x
1861 passwd2des NEW: Secure RPC
1863 pow10f NEW: GNU ext.
1864 pow10l NEW: GNU ext.
1867 printf_size NEW: GNU ext.
1868 printf_size_info NEW: GNU ext.
1869 profil_counter REMOVED
1870 pthread_mutexattr_getkind_np REPLACED
1871 pthread_mutexattr_setkind_np REPLACED
1872 ptsname NEW: Unix98 PTY
1873 ptsname_r NEW: Unix98 PTY
1875 putchar_locked REMOVED
1876 putgrent NEW: GNU ext.
1878 putpmsg NEW: STREAMS
1879 pututxline NEW: Unix98
1883 readdir64_r NEW: LFS
1884 remquo NEW: ISO C 9x
1885 remquof NEW: ISO C 9x
1886 remquol NEW: ISO C 9x
1888 roundf NEW: ISO C 9x
1889 roundl NEW: ISO C 9x
1891 scalbln NEW: ISO C 9x
1892 scalblnf NEW: ISO C 9x
1893 scalblnl NEW: ISO C 9x
1895 sendfile NEW: kernel
1896 setcontext NEW: Unix98
1897 setrlimit64 NEW: LFS
1898 setutxent NEW: Unix98
1900 sigignore NEW: Unix98
1901 sigqueue NEW: POSIX.1b
1902 sigrelse NEW: Unix98
1903 sigset NEW: POSIX.1b
1904 sigtimedwait NEW: POSIX.1b
1905 sigwaitinfo NEW: POSIX.1b
1906 sincos NEW: GNU ext.
1907 sincosf NEW: GNU ext.
1908 sincosl NEW: GNU ext.
1912 strcasestr NEW: GNU ext.
1913 strtoimax NEW: ISO C 9x
1914 strtoumax NEW: ISO C 9x
1915 strverscmp NEW: GNU ext.
1916 svcauthdes_stats NEW: Secure RPC
1917 svcunix_create NEW: sunrpc etx
1918 svcunixfd_create NEW: sunrpc ext
1919 swapcontext NEW: Unix98
1920 tcgetsid NEW: Unix98 PTY
1921 tdestroy NEW: GNU ext.
1922 tgamma NEW: ISO C 9x
1923 tgammaf NEW: ISO C 9x
1924 tgammal NEW: ISO C 9x
1928 truncf NEW: ISO C 9x
1929 truncl NEW: ISO C 9x
1931 unlockpt NEW: Unix98 PTY
1932 updwtmpx NEW: Unix98
1933 user2netname NEW: Secure RPC
1934 utmpxname NEW: Unix98
1935 versionsort NEW: GNU ext.
1936 versionsort64 NEW: GNU ext.
1938 wcscasecmp NEW: GNU ext.
1939 wcsncasecmp NEW: GNU ext.
1940 wcsnlen NEW: GNU ext.
1941 wcstoimax NEW: ISO C 9x
1942 wcstoll NEW: ISO C 9x
1943 wcstoull NEW: ISO C 9x
1944 wcstoumax NEW: ISO C 9x
1946 wordexp NEW: POSIX.2
1947 wordfree NEW: POSIX.2
1948 write_profiling REMOVED
1949 xdecrypt NEW: Secure RPC
1950 xdr_authdes_cred NEW: Secure RPC
1951 xdr_authdes_verf NEW: Secure RPC
1952 xdr_cryptkeyarg NEW: Secure RPC
1953 xdr_cryptkeyarg2 NEW: Secure RPC
1954 xdr_cryptkeyres NEW: Secure RPC
1955 xdr_getcredres NEW: Secure RPC
1956 xdr_key_netstarg NEW: Secure RPC
1957 xdr_key_netstres NEW: Secure RPC
1958 xdr_keybuf NEW: Secure RPC
1959 xdr_keystatus NEW: Secure RPC
1960 xdr_netnamestr NEW: Secure RPC
1961 xdr_sizeof NEW: Secure RPC
1962 xdr_unixcred NEW: sunrpc ext
1963 xencrypt NEW: Secure RPC
1964 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1975 * inet_ntoa is thread-safe
1977 * updwtmp is moved from libutil to libc
1979 * rewrite of cbrt function
1981 * update of timezone data
1995 * add atoll function
1997 * fix complex problems in Berkeley DB code
1999 * fix math functions
2003 * fixed lots of header problems (especially Linux/GNU specific)
2005 * dynamic loader preserves all registers
2007 * Roland McGrath provided support for handling of auxiliary objects in
2008 the ELF dynamic loader.
2010 * support for parallel builds is improved
2014 * GNU extensions are no longer declared by default. To enable them you
2015 must define the macro `_GNU_SOURCE' in your program or compile with
2018 * The library has changed from using GNU ld symbol aliases to using weak
2019 symbols where available. The ELF object file format supports weak
2020 symbols; GNU ld also supports weak symbols in the a.out format. (There
2021 is also now support for other GNU ld extensions in ELF. Use the
2022 `--with-elf' option to configure to indicate you have ELF, and
2023 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
2024 of many files which contained only symbol aliases, reducing the size of
2025 the source and the compiled library; many other files were renamed to
2026 less cryptic names previously occupied by the symbol alias files.
2027 There is a new header file <elf.h> for programs which operate on
2028 files in the ELF format.
2030 * Converted to Autoconf version 2, so `configure' has more options.
2031 Run `configure --help' to see the details.
2033 * The library can now be configured to build profiling, highly-optimized
2034 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
2035 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
2036 `configure' enable building these extra libraries. The shared library is
2037 built by default when using both ELF and GNU ld. When shared libraries
2038 are enabled, the new library `-ldl' is available for arbitrary run-time
2039 loading of shared objects; its interface is defined in <dlfcn.h>. The
2040 new header file <link.h> gives access to the internals of the run-time
2041 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
2042 application of same name on other systems and it provides information
2043 about dynamically linked binaries.
2045 * The C library now provides the run-time support code for profiling
2046 executables compiled with `-pg'. Programs can control the profiling code
2047 through the interface in <sys/gmon.h>. The `gmon.out' files written by
2048 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
2049 the support for this file format was contributed by David Mosberger-Tang.
2051 * The math code has been replaced with a math library based on fdlibm from
2052 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
2053 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
2054 functions. The math functions now reside in a separate library, so
2055 programs using them will need to use `-lm' their linking commands.
2057 * John C. Bowman contributed optimized ix87 assembler inline functions.
2059 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
2060 mechanism similar to that found in Solaris 2. This is now used for the
2061 group, passwd, hosts, networks, services, protocols, rpc, ethers,
2062 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
2063 file controls what services are used for each individual database. This
2064 works by loading shared libraries with names specified in `nsswitch.conf',
2065 so service modules can be changed or added at any time without even
2066 relinking any program. Currently there are the file, db, and NIS based
2067 NSS services available.
2069 * The new functions `strtoq' and `strtouq' parse integer values from
2070 strings, like `strtol' and `strtoul', but they return `long long int' and
2071 `unsigned long long int' values, respectively (64-bit quantities).
2073 * The new functions `strtof' and `strtold' parse floating-point values from
2074 strings, like `strtod', but they return `float' and `long double' values,
2075 respectively (on some machines `double' and `long double' are the same).
2077 * Ulrich Drepper has contributed new implementations of the floating-point
2078 printing and reading code used in the `printf' family of functions and
2079 `strtod', `strtof', and `strtold'. These new functions are perfectly
2080 accurate, and much faster than the old ones.
2082 * The implementation of the POSIX locale model was completely rewritten by
2083 Ulrich Drepper. This includes the new programs `localedef' and `locale'
2084 to compile the POSIX locale definition.
2086 * The former dummy implementations of the strcoll and strxfrm function are
2087 now replaced by fully functional code contributed by Ulrich Drepper. The
2088 collation information comes from the POSIX locale definitions.
2090 * The new header <langinfo.h> defines an interface for accessing
2091 various locale-dependent data (using the locale chosen with `setlocale').
2093 * Ulrich Drepper has contributed a new suite of functions for operation on
2094 wide-character and multibyte-character strings, in <wchar.h>;
2095 and classification and case conversion of wide characters, in <wctype.h>.
2096 These new functions are conforming to the ISO C, Amendement 1 specification.
2098 * There is now a second implementation of the standard I/O library available.
2099 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2100 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2102 * You can now use positional parameter specifications in format strings
2103 for the `printf' and `scanf' families of functions. For example,
2104 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2105 ``Number 6, Mr Jones''. This is mainly useful when providing different
2106 format strings for different languages, whose grammars may dictate
2107 different orderings of the values being printed. To support this
2108 feature, the interface for `register_printf_handler' has changed; see
2109 the header file <printf.h> for details.
2111 * The `printf' and `scanf' families of functions now understand a new
2112 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2113 to group numbers as indicated by the locale; for `scanf' and friends, this
2114 says to accept as valid only a number with all the proper grouping
2115 separators in the right places. In the default "C" locale, numbers are
2116 not grouped; but locales for specific countries will define the usual
2117 conventions (i.e. separate thousands with `,' in the US locale).
2119 * The pgrp functions have been regularized, slightly incompatibly but much
2120 less confusingly. The core functions are now `getpgid' and `setpgid',
2121 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2122 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2123 provided for compatibility. There is no longer an incompatible `getpgrp'
2124 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2126 * The new header file <fts.h> and suite of functions simplify programs that
2127 operate on directory trees. This code comes from 4.4 BSD.
2129 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2130 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2131 NSS scheme used in glibc.
2133 * There is a new malloc debugging hook `__memalign_hook'.
2135 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2136 `unsigned int' in <sys/types.h>. These are for compatibility only and
2137 their use is discouraged.
2139 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2140 done differently, so that it works even without GNU ld.
2142 * New function `euidaccess' checks allowed access to a file like `access',
2143 but using the effective IDs instead of the real IDs.
2145 * The time zone data files have been updated for the latest and greatest
2146 local time conventions of the countries of the world.
2148 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2151 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2152 for formatting floating-point numbers. They are provided only for
2153 compatibility; new programs should use `sprintf' instead. There are
2154 also equivalent function for the `long double' floating-point type and
2155 all functions also exist in a reentrant form.
2157 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2158 functions for maintaining the login-record files (primarily of use to
2159 system programs such as `login'), and convenient functions for
2160 allocating and initializing a pseudo-terminal (pty) device.
2162 * Ulrich Drepper has contributed new support for System V style
2163 shared memory and IPC on systems that support it.
2165 * Ulrich Drepper has contributed several miscellaneous new functions found
2166 in System V: The `hsearch' family of functions provide an effective
2167 implementation of hash tables; `a64l' and `l64a' provide a very simple
2168 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2171 * Ulrich Drepper has contributed new reentrant counterparts for the
2172 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2174 * Ulrich Drepper has contributed new, highly-optimized versions of several
2175 string functions for the i486/Pentium family of processors.
2177 * Ulrich Drepper has updated the Linux-specific code, based largely
2178 on work done in Hongjiu Lu's version of GNU libc for Linux.
2179 The GNU library now supports Linux versions 2.0.10 and later,
2180 using the ELF object file format (i[3456]86-*-linux).
2182 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2184 * David Mosberger-Tang and Richard Henderson have ported the C library
2185 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2186 dynamic linking support for ELF/Alpha.
2188 * Richard Henderson contributed several Alpha optimized assembler function
2189 for arithmetic and string handling.
2191 * Ulrich Drepper has contributed a new set of message catalog functions to
2192 support multiple languages using the <libintl.h> interface, for use with
2193 his new package GNU gettext. Translation volunteers have contributed
2194 catalogs of the library's messages in Spanish, German, and Korean.
2196 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2197 program and the `catgets' function for reading the catalog files it
2198 creates. (The <libintl.h> interface is preferred; we include the
2199 <nl_types.h> interface using `catgets' only for source compatibility with
2200 programs already written to use it.)
2202 * New header file <values.h> gives SVID-compatible names for <limits.h>
2205 * Various new macros, declarations, and small header files for compatibility
2208 * New function `group_member' is a convenient way to check if a process has
2209 a given effective group ID.
2211 * When using GCC 2.7 and later, the socket functions are now declared in a
2212 special way so that passing an argument of type `struct sockaddr_in *',
2213 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2214 `struct sockaddr *' type, does not generate a type-clash warning.
2216 * New function `error' declared in header file <error.h> is a convenient
2217 function for printing error messages and optionally exiting; this is the
2218 canonical function used in GNU programs. The new functions `err', `warn',
2219 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2220 doing the same thing.
2222 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2223 POSIX.2 `glob' function to do ~ and {...} expansion.
2225 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2226 `clearenv' which is used in POSIX.9 is also available.
2228 * New function `getsid' returns session ID number on systems that support it.
2230 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2231 files <db.h> and <mpool.h> provide a rich set of functions for several
2232 types of simple databases stored in memory and in files, and <ndbm.h> is
2233 an old `ndbm'-compatible interface using the `db' functions. Link with
2234 `-ldb' to get these functions.
2236 * New macro `strdupa' copies a string like `strdup', but uses local stack
2237 space from `alloca' instead of dynamic heap space from `malloc'.
2239 * New function `strnlen' is like `strlen' but searches only a given maximum
2240 number of characters for the null terminator. `stpncpy', `strndup' and
2241 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2244 * New function `statfs' in header <sys/statfs.h>.
2246 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2247 provide convenient functions for operating on blocks of null-terminated
2250 * A new suite of functions in <utmp.h> handle all the details of reading
2251 and writing the utmp file.
2253 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2256 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2257 completely POSIX compliant and also implemented the extended functionality
2258 to handle alternate digit representation and alternate era date formats.
2260 * Ulrich Drepper provided an implementation of the `strptime' function
2261 defined in XPG4.2 which transforms a string into a `struct tm' value.
2263 * Paul Eggert provided the tzselect shell script as part of the timezone
2264 code. The shell script makes it easy to select the correct timezone
2267 * The implementation of the malloc family of functions is completely replaced
2268 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2269 The implementation uses the mmap function (if available) and it is
2270 optimized for the use in multi threaded programs.
2272 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2273 functions. This new functionality is usable by specifying a special
2274 salt string and it is compatible with implementation on *BSD systems.
2276 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2277 `getsubopt' to handle second level command line options, `bsd_signal'
2278 to access BSD style `signal' functionality, the obsolete `regexp' style
2281 * the `lchown' function is available on system which support this
2284 * The implementation of the shadow password handling function was contributed
2287 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2289 * POSIX.1g support was added. The <sys/select.h> header is available,
2290 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2291 implementation of `getaddrinfo'.
2295 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2297 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2298 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2300 * The new function `daemon' from 4.4 BSD is useful for server programs that
2301 want to put themselves in the background.
2303 * Joel Sherrill has contributed support for several standalone boards that
2304 run without an operating system.
2306 * `printf', `scanf' and friends now accept a `q' type modifier for long
2307 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2309 * All of the code taken from BSD (notably most of the math and networking
2310 routines) has been updated from the BSD 4.4-Lite release.
2312 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2314 * The new functions `getdomainname' and `setdomainname' fetch or change the
2315 YP/NIS domain name. These are system calls which exist on systems which
2318 * The time zone data files have been updated for the latest international
2321 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2322 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2326 * The C library now includes support for Sun RPC, from Sun's free
2327 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2328 are included. (There is still no support for YP.)
2330 * Tom Quinn has contributed a port of the C library to SGI machines running
2331 Irix 4 (mips-sgi-irix4).
2333 * The new `lockf' function is a simplified interface to the locking
2334 facilities of `fcntl', included for compatibility.
2336 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2338 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2340 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2343 * The error message printed by `assert' for a failed assertion now includes
2344 the name of the program (if using GNU ld) and the name of the calling
2345 function (with versions of GCC that support this).
2347 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2349 * The library now includes the <sys/mman.h> header file and memory
2350 management functions `mmap', `munmap', `mprotect', `msync', and
2351 `madvise', on systems that support those facilities.
2353 * The interface for `mcheck' has changed slightly: the function called to
2354 abort the program when an allocation inconsistency is detected now takes
2355 an argument that indicates the type of failure. The new function
2356 `mprobe' lets you request a consistency check for a particular block at
2357 any time (checks are normally done only when you call `free' or `realloc'
2360 * It is now possible to easily cross-compile the C library, building on one
2361 system a library to run on another machine and/or operating system. All
2362 you need to do is set the variable `HOST_CC' in `configparms' to the
2363 native compiler for programs to run on the machine you are building on (a
2364 few generator programs are used on Unix systems); set `CC' to the
2367 * The new function `fexecve' (only implemented on the GNU system) executes
2368 a program file given a file descriptor already open on the file.
2372 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2373 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2375 * You can set the variable `libprefix' in `configparms' to specify a prefix
2376 to be prepended to installed library files; this makes it easy to install
2377 the GNU C library to be linked as `-lgnuc' or whatever.
2379 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2380 copies a limited number of characters from a string, and returns the
2381 address of the last character written.
2383 * You no longer need to check for whether the installed `stddef.h' is
2384 compatible with the GNU C library. configure now checks for you.
2386 * You can now define a per-stream `fileno' function to convert the
2387 stream's cookie into an integral file descriptor.
2389 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2390 allocates zero bytes of storage, and returns a unique pointer which
2391 you can pass to `realloc' or `free'. The behavior is undefined if
2392 you dereference this pointer.
2394 * The C library now runs on Sony NEWS m68k machines running either
2395 NewsOS 3 or NewsOS 4.
2397 * The new `syscall' function is a system-dependent primitive function
2398 for invoking system calls. It has the canonical behavior on Unix
2399 systems, including unreliable return values for some calls (such as
2400 `pipe', `fork' and `getppid').
2402 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2403 to `EAGAIN', which is the preferred name. On systems whose kernels
2404 use two distinct codes, the C library now translates EWOULDBLOCK to
2405 EAGAIN in every system call function.
2409 * The GNU C Library Reference Manual is now distributed with the library.
2410 `make dvi' will produce a DVI file of the printed manual.
2411 `make info' will produce Info files that you can read on line using C-h i
2412 in Emacs or the `info' program.
2413 Please send comments on the manual to bug-glibc-manual@gnu.org.
2415 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2417 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2419 * Jason Merrill has contributed a port to the Sequent Symmetry running
2420 Dynix version 3 (i386-sequent-dynix).
2422 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2423 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2425 * New function `memory_warnings' lets you arrange to get warnings when
2426 malloc is running out of memory to allocate, like Emacs gives you.
2428 * The C library now contains the relocating allocator used in Emacs 19 for
2429 its editing buffers. This allocator (ralloc) minimizes allocation
2430 overhead and fragmentation by moving allocated regions around whenever it
2431 needs to. You always refer to a ralloc'd region with a "handle" (a
2432 pointer to a pointer--an object of type `void **').
2434 * There is a new `printf' format: `%m' gives you the string corresponding
2435 to the error code in `errno'.
2437 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2438 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2439 pass, the `a' modifier says to fill in a `char **' you pass with a
2442 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2443 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2444 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2446 * `mkstemp' is a traditional Unix function to atomically create and open a
2447 uniquely-named temporary file.
2451 * The standard location for the file that says what the local timezone is
2452 has changed again. It is now `/usr/local/etc/localtime' (or more
2453 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2455 * The distribution no longer contains any files with names longer than 14
2458 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2459 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2461 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2465 * The configuration process has changed quite a bit. The `configure'
2466 script is now used just like the configuration scripts for other GNU
2467 packages. The `sysdeps' directory hierarchy is much rearranged.
2468 The file `INSTALL' explains the new scheme in detail.
2470 * The header files no longer need to be processed into ANSI C and
2471 traditional C versions. There is just one set of files to install, and
2472 it will work with ANSI or old C compilers (including `gcc -traditional').
2474 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2475 MIPS DECStation running Ultrix 4.
2477 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2478 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2479 made itself into a shared library.
2481 * Yet further improved support for the i386, running 4.3 BSD-like systems
2482 (such as Mach 3 with the Unix single-server), or System V.
2484 * New function `strncasecmp' to do case-insensitive string comparison
2485 with limited length.
2487 * New function `strsep' is a reentrant alternative to `strtok'.
2489 * New functions `scandir' and `alphasort' for searching directories.
2491 * New function `setenv' is a better interface to `putenv'.
2493 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2494 function for traversing a directory tree.
2496 * The GNU obstack package is now also part of the C library.
2497 The new function `open_obstack_stream' creates a stdio stream that
2498 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2499 formatted output directly to an obstack.
2501 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2502 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2504 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2506 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2507 things to your strings.
2509 * There are some new test programs: test-fseek, testmb, and testrand.
2511 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2512 These ports are not finished, but are a good starting place for really
2513 supporting those systems.
2515 * `/etc/localtime' is now the standard location for the file that says what
2516 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2517 This follows the general principle that `/etc' is the place for all local
2518 configuration files.
2520 * The C library header files now use `extern "C"' when used by the C++
2521 compiler, so the C library should now work with C++ code.
2523 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2524 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2527 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2528 function which uses the `merge sort' algorithm, and is said to be
2529 significantly faster than the old GNU `qsort' function. Merge sort is
2530 now the standard `qsort' function. The new algorithm can require a lot
2531 of temporary storage; so, the old sorting function is called when the
2532 required storage is not available.
2534 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2535 provides the Unix `crypt' function, plus some other entry points.
2537 * The code and header files taken from 4.4 BSD have been updated with the
2538 latest files released from Berkeley.
2540 ----------------------------------------------------------------------
2541 Copyright information:
2543 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2545 Permission is granted to anyone to make or distribute verbatim copies
2546 of this document as received, in any medium, provided that the
2547 copyright notice and this permission notice are preserved,
2548 thus giving the recipient permission to redistribute in turn.
2550 Permission is granted to distribute modified versions
2551 of this document, or of portions of it,
2552 under the above conditions, provided also that they
2553 carry prominent notices stating who last changed them.
2556 version-control: never
projects / platform / upstream / glibc.git / blob