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 6804, 9894, 12994, 13347, 13651, 14308, 14770, 15119, 15347, 15514, 15804,
13 15894, 16002, 16064, 16198, 16284, 16348, 16349, 16357, 16362, 16447,
14 16516, 16532, 16545, 16564, 16574, 16599, 16600, 16609, 16610, 16611,
15 16613, 16619, 16623, 16629, 16632, 16634, 16639, 16642, 16648, 16649,
16 16670, 16674, 16677, 16680, 16683, 16689, 16695, 16701, 16706, 16707,
17 16712, 16713, 16714, 16731, 16739, 16740, 16743, 16754, 16758, 16759,
18 16760, 16770, 16786, 16789, 16791, 16799, 16800, 16815, 16823, 16824,
19 16831, 16838, 16849, 16854, 16876, 16877, 16885, 16888, 16890, 16912,
20 16915, 16916, 16917, 16922, 16927, 16928, 16932, 16943, 16958, 16966,
23 * The minimum Linux kernel version that this version of the GNU C Library
24 can be used with is 2.6.32.
26 * Running the testsuite no longer terminates as soon as a test fails.
27 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
28 with PASS or FAIL lines for individual tests. A summary of the results is
29 printed, including a list of failing lists, and "make check" exits with
30 error status if there were any unexpected failures. "make check
31 stop-on-test-failure=y" may be used to keep the old behavior.
33 * The am33 port, which had not worked for several years, has been removed
36 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
37 supported; they now act the same as _DEFAULT_SOURCE (but generate a
38 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
39 conflicted with POSIX (support for which was removed in 2.19), the
40 interfaces those macros enabled remain available when compiling with
41 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
44 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
46 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
47 This may improve lock scaling of existing programs on TX capable systems.
48 The lock elision code is only built with --enable-lock-elision=yes and
49 then requires a GCC version supporting the TX builtins. With lock elision
50 default mutexes are elided via __builtin_tbegin, if the cpu supports
51 transactions. By default lock elision is not enabled and the elision code
56 * The following bugs are resolved with this release:
58 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
59 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
60 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
61 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
62 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
63 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
64 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
65 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
66 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
67 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
68 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
69 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
70 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
71 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
72 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
73 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
74 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
75 16431, 16453, 16474, 16506, 16510, 16529
77 * Slovenian translations for glibc messages have been contributed by the
78 Translation Project's Slovenian team of translators.
80 * The public headers no longer use __unused nor __block. This change is to
81 support compiling programs that are derived from BSD sources and use
82 __unused internally, and to support compiling with Clang's -fblock
83 extension which uses __block.
85 * CVE-2012-4412 The strcoll implementation caches indices and rules for
86 large collation sequences to optimize multiple passes. This cache
87 computation may overflow for large collation sequences and may cause a
88 stack or buffer overflow. This is now fixed to use a slower algorithm
89 which does not use a cache if there is an integer overflow.
91 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
92 rules for large collation sequences to optimize multiple passes and falls
93 back to alloca if malloc fails, resulting in a possible stack overflow.
94 The implementation now falls back to an uncached collation sequence lookup
97 * CVE-2013-4788 The pointer guard used for pointer mangling was not
98 initialized for static applications resulting in the security feature
99 being disabled. The pointer guard is now correctly initialized to a
100 random value for static applications. Existing static applications need
101 to be recompiled to take advantage of the fix (bug 15754).
103 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
104 to the d_name member of struct dirent, or omit the terminating NUL
105 character. (Bugzilla #14699).
107 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
108 aligned_alloc functions could allocate too few bytes or corrupt the
109 heap when passed very large allocation size values (Bugzilla #15855,
112 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
113 for AF_INET6 has been fixed (Bugzilla #16072).
115 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
116 pap_CW, quz_PE, the_NP.
118 * Substantially revised locales: gd_GB, ht_HT
120 * The LC_ADDRESS field was updated to support country_car for almost all
123 * ISO 1427 definitions were updated.
125 * ISO 3166 definitions were updated.
127 * The localedef utility now supports --big-endian and --little-endian
128 command-line options to generate locales for a different system from that
129 for which the C library was built.
131 * Binary locale files now only depend on the endianness of the system for
132 which they are generated and not on other properties of that system. As a
133 consequence, binary files generated with new localedef may be incompatible
134 with old versions of the GNU C Library, and binary files generated with
135 old localedef may be incompatible with this version of the GNU C Library,
136 in the following circumstances:
138 + Locale files may be incompatible on m68k systems.
140 + Locale archive files (but not separate files for individual locales) may
141 be incompatible on systems where plain "char" is signed.
143 * The configure option --disable-versioning has been removed. Builds with
144 --disable-versioning had not worked for several years.
146 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
147 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
149 * SystemTap probes for malloc have been introduced.
151 * SystemTap probes for slow multiple precision fallback paths of
152 transcendental functions have been introduced.
154 * Support for powerpc64le has been added.
156 * The soft-float powerpc port now supports e500 processors.
158 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
160 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
161 set of header declarations that are enabled by default, even when other
162 feature test macros or compiler options such as -std=c99 would otherwise
163 disable some of those declarations.
165 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
166 conflict with POSIX. The libbsd-compat library (which was a dummy library
167 that did nothing) has also been removed.
169 * Preliminary documentation about Multi-Thread, Async-Signal and
170 Async-Cancel Safety has been added.
172 * Change of ABI data structures for s390 and s390x:
173 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
174 allow for future hardware extensions. All library functions that accept or
175 return these structures were versioned in order to provide backwards
176 compatibility with existing code. However, not all cases can be handled
177 with interface versioning. If an application embeds either structure into
178 another structure and that structure is passed to another compilation unit
179 which expects the newer larger-sized object then any access to the new
180 fields will result in undefined behaviour. Similarly any access to fields
181 that were moved by the enlarging of the structures will cause undefined
182 behaviour. To fix the undefined behaviour all objects that are part of the
183 final in-memory image must agree on the size of structures, and this may
184 require recompilation.
188 * The following bugs are resolved with this release:
190 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
191 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
192 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
193 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
194 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
195 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
196 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
197 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
198 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
199 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
200 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
201 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
202 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
205 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
206 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
207 Distributions can re-enable building and using pt_chown via the new configure
208 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
209 considerable security risks and should only be used if the distribution
210 understands and accepts the risks.
212 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
215 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
216 fixed (Bugzilla #15330).
218 * Add support for calling C++11 thread_local object destructors on thread
219 and program exit. This needs compiler support for offloading C++11
220 destructor calls to glibc.
222 * Improved worst case performance of libm functions with double inputs and
225 * Support for priority inherited mutexes in pthread condition variables on
226 non-x86 architectures.
228 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
230 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
232 * Optimized string functions for ARM. Implemented by Will Newton and
235 * Optimized libm functions for SPARC. Implemented by David S. Miller.
237 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
240 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
241 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
243 * Added a benchmark framework to track performance of functions in glibc.
245 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
246 It is based on draft TS 18661 and currently enabled as a GNU extension.
248 * On Linux, the clock function now uses the clock_gettime system call
249 for improved precision, rather than old times system call.
251 * Added support for version-3 tz format files. This is needed when using
252 the tz database release 2013e or later, and affects a few unusual cases --
253 currently only TZ='America/Godthab' for time stamps after 2037.
255 * Added new API functions pthread_getattr_default_np and
256 pthread_setattr_default_np to get and set the default pthread
257 attributes of a process.
259 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
260 This may improve lock scaling of existing programs on TSX capable systems.
261 When the --enable-lock-elision=yes parameter is specified at configure
262 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
265 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
266 availability). Implemented by Ryan S. Arnold.
268 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
272 * The following bugs are resolved with this release:
274 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
275 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
276 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
277 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
278 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
279 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
280 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
281 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
282 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
283 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
284 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
285 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
286 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
287 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
288 14879, 14889, 14893, 14898, 14914.
290 * Optimization of memcpy for MIPS.
292 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
293 EMFILE has been fixed (Bugzilla #14889).
295 * The add-on ports collection is now distributed in the "ports" subdirectory
296 of the main GNU C Library distribution, rather than separately.
298 * Port to ARM AArch64 contributed by Linaro.
300 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
301 Optimized versions of memcpy, memset, and memcmp added for System z10 and
303 Implemented by Andreas Krebbel.
305 * The new function secure_getenv allows secure access to the environment,
306 returning NULL if running in a SUID/SGID process. This function replaces
307 the internal function __secure_getenv.
309 * SystemTap static probes have been added into the dynamic linker.
310 Implemented by Gary Benson.
312 * Optimizations of string functions strstr, strcasestr and memmem.
313 Implemented by Maxim Kuvyrkov.
315 * The minimum Linux kernel version that this version of the GNU C Library
316 can be used with is 2.6.16.
318 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
319 powerpc POWER7. Implemented by Will Schmidt.
321 * New configure option --disable-nscd builds the C library such that it
322 never attempts to contact the Name Service Caching Daemon (nscd).
323 New configure option --disable-build-nscd avoids building nscd itself;
324 this is the default if --disable-nscd is used.
326 * Improved support for cross-compilation, including cross-testing and
327 bootstrap builds without a previously built glibc.
329 * Several testsuite tests are now able to test multiple IFUNC variants of an
330 interface, rather than just testing the one that would be chooen by
333 * New configure options --with-bugurl and --with-pkgversion, for
334 distributors to use to embed their bug-reporting and package version
335 information in --help and --version output.
337 * The ttyname and ttyname_r functions on Linux now fall back to searching for
338 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
339 allows creation of chroots without the procfs mounted on /proc.
341 * The `crypt' function now fails if passed salt bytes that violate the
342 specification for those values. On Linux, the `crypt' function will
343 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
344 enabled, and fail on encrypted strings using the MD5 or DES algorithm
345 when the mode is enabled.
347 * The `clock_*' suite of functions (declared in <time.h>) is now available
348 directly in the main C library. Previously it was necessary to link with
349 -lrt to use these functions. This change has the effect that a
350 single-threaded program that uses a function such as `clock_gettime' (and
351 is not linked with -lrt) will no longer implicitly load the pthreads
352 library at runtime and so will not suffer the overheads associated with
353 multi-thread support in other code such as the C++ runtime library.
355 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
360 * The following bugs are resolved with this release:
362 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
363 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
364 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
365 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
366 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
367 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
368 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
369 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
370 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
371 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
372 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
373 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
374 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
375 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
376 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
377 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
378 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
379 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
380 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
381 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
382 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
383 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
386 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
387 configuring glibc with:
388 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
389 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
390 Implemented by H.J. Lu.
394 + define static_assert
396 + do not declare gets
398 + declare at_quick_exit and quick_exit also for ISO C11
400 + aligned_alloc. NB: The code is deliberately allows the size parameter
401 to not be a multiple of the alignment. This is a moronic requirement
402 in the standard but it is only a requirement on the caller, not the
407 + uchar.h support added
409 + CMPLX, CMPLXF, CMPLXL added
411 Implemented by Ulrich Drepper.
413 * Support for the IA-64 has been moved to ports.
415 * Remove support for anything but ELF binary format
417 * Checking versions of poll, ppoll added.
418 Implemented by Ulrich Drepper.
420 * More generic and 64-bit performance optimizations to math functions.
421 Implemented by Ulrich Drepper.
423 * New configure option --enable-obsolete-rpc makes the deprecated RPC
424 headers and functions available at compile time as they were before
425 version 2.14. This option will be removed at some time in the future
426 after the TI-RPC library becomes fully sufficient for the needs of
427 existing applications.
429 * Compatibility code for Linux kernel versions before 2.4 has been removed.
430 Note that glibc is not expected to work with any Linux kernel version
433 * New header <sys/auxv.h> and function getauxval allowing easy access to
434 the AT_* key-value pairs passed from the Linux kernel. The header also
435 defines the HWCAP_* bits associated with the AT_HWCAP key.
437 * New locales: mag_IN
439 * New configure option --enable-systemtap builds SystemTap static probes
440 into libc for setjmp and longjmp and into libpthread for various operations.
441 So far the setjmp/longjmp probes and some of the libpthread probes are
442 provided only for i*86 and x86_64.
443 Implemented by Roland McGrath and Rayson Ho.
445 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
447 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
450 * More optimized functions for SPARC. Implemented by David S. Miller.
452 * Improved support for cross-compilation, especially bootstrap builds
453 without a previously built glibc.
455 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
456 Chris Metcalf from Tilera.
458 * Support for the old ARM ABI has been removed from ports. Only the EABI is
459 now supported for ARM processors.
461 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
462 as the name of the dynamic linker, to distinguish it from the
463 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
465 * Support for CRIS has been removed from ports.
467 * A new class of installed header has been documented for low-level
468 platform-specific functionality. PowerPC added the first instance with a
469 function to provide time base register access. Contributed by Tulio
470 Magno Quites Machado Filho.
472 * ix86 configurations now install header files that are consistent with
473 what x86-64 configurations install. These same header files can be used
474 for -m32, -m64, or -mx32 builds.
475 Contributed by H.J. Lu.
477 * Math library bug fixes. A thorough audit of all open math library bugs was
478 conducted by Joseph Myers. Significant progress was made on many math
479 library bugs resulting in more accurate exceptions and function results.
480 Many thanks to all those that contributed including Andreas Jaeger for his
481 patch review and work on the x87 trigonometric instruction issues.
483 * Timezone data is no longer installed. Timezone-related binaries and scripts
484 will continue to be installed. Users should obtain their timezone data from
485 their distribution provider or from the tzdata package at
486 <ftp://munnari.oz.au/pub/>.
490 * The following bugs are resolved with this release:
492 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
493 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
494 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
495 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
496 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
497 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
498 13484, 13506, 13515, 13523, 13524, 13538, 13540
500 * New program pldd to list loaded object of a process
501 Implemented by Ulrich Drepper.
503 * Add nss_db support back to glibc. No more dependency on Berkeley db
504 and support for initgroups lookups.
505 Implemented by Ulrich Drepper.
507 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
508 Contributed by HJ Lu.
510 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
511 Contributed by HJ Lu.
513 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
514 on x86-32 and x86-64.
515 Contributed by Liubov Dmitrieva.
517 * Optimized strchr and strrchr for SSE on x86-32.
518 Contributed by Liubov Dmitrieva.
520 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
521 for x86-64 and x86-32.
522 Contributed by Liubov Dmitrieva.
524 * New interfaces: scandirat, scandirat64
525 Implemented by Ulrich Drepper.
527 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
528 Implemented by Ulrich Drepper.
530 * nscd now also caches the netgroup database.
531 Implemented by Ulrich Drepper.
533 * Integrate libm with gcc's -ffinite-math-only option.
534 Implemented by Ulrich Drepper.
536 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
537 to math functions. Implemented by Ulrich Drepper.
539 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
540 Implemented by Ulrich Drepper.
542 * New Linux interfaces: process_vm_readv, process_vm_writev
544 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
545 Implemented by Ulrich Drepper.
547 * Optimized nearbyint and strcasecmp for PPC.
548 Implemented by Adhemerval Zanella.
550 * New locales: bho_IN, unm_US, es_CU, ta_LK
554 * The following bugs are resolved with this release:
556 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
557 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
558 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
559 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
560 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
561 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
562 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
563 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
564 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
565 12795, 12811, 12813, 12814, 12841
567 * The RPC implementation in libc is obsoleted. Old programs keep working
568 but new programs cannot be linked with the routines in libc anymore.
569 Programs in need of RPC functionality must be linked against TI-RPC.
570 The TI-RPC implementation is IPv6 enabled and there are other benefits.
572 Visible changes of this change include (obviously) the inability to link
573 programs using RPC functions without referencing the TI-RPC library and the
574 removal of the RPC headers from the glibc headers.
575 Implemented by Ulrich Drepper.
577 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
578 syncfs, setns, sendmmsg
580 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
581 yue_HK, lij_IT, mhr_RU
583 * New encodings: CP770, CP771, CP772, CP773, CP774
585 * New program sotruss to trace calls through PLTs
586 Implemented by Ulrich Drepper.
588 * The malloc hook implementation is marked deprecated and will be removed
589 from the default implementation in the next version. The design never
590 worked ever since the introduction of threads. Even programs which do
591 not create threads themselves can use multiple threads created internally.
595 * The following bugs are resolved with this release:
597 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
598 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
599 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
600 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
603 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
605 * POWER7 optimizations: memset, memcmp, strncmp
607 * New optimized string functions for x86-64: strnlen (SSE2),
608 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
609 Implemented by Ulrich Drepper.
613 * The following bugs are resolved with this release:
615 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
616 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
617 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
618 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
619 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
620 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
621 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
622 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
624 * New interfaces: pthread_getname_np, pthread_setname_np
626 * New Linux interface: recvmmsg
628 * STT_GNU_IFUNC implemented for Sparc by David Miller.
630 * The dynamic linker now recognizes supported ABI versions from the
631 EI_ABIVERSION field in the ELF header.
632 Implemented by Ulrich Drepper.
634 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
635 will not be used to fill in password fields in the passwd.byname replies.
636 Instead it is used to synthesize the shadow.byname table, should it be
637 missing. This is a useful mode in some installations involving Solaris.
638 Implemented by Ulrich Drepper.
640 * New locales: kok_IN, sq_MK, cv_RU
644 * The following bugs are resolved with this release:
646 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
647 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
648 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
649 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
650 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
651 10789, 10817, 10823, 10840, 10847
653 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
655 Implemented by Ulrich Drepper.
657 * Checking version of longjmp added that fails if an uninitialized stack
658 frame would be created. Implemented by Ulrich Drepper.
660 * STT_GNU_IFUNC is now supported in static executables.
661 Implemented by H.J. Lu.
663 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
665 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
666 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
667 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
668 Contributed by H.J. Lu.
670 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
671 Implemented by Ulrich Drepper.
673 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
675 Contributed by H.J. Lu.
677 * Support for fma instruction in AVX on x86-64.
678 Implemented by H.J. Lu and Ulrich Drepper.
680 * AVX support in x86-64 auditing support in ld.so.
681 Implemented by H.J. Lu.
683 * STB_GNU_UNIQUE support added.
684 Implemented by Ulrich Drepper.
686 * Implement second fallback mode for optimized DNS lookup for even more
687 broken environments. If two requests from the same port are not
688 handled correctly close the socket and open a new one before sending
689 the second request. The 'single-request-reopen' option in /etc/resolv.conf
690 can be used to select this mode right away, instead of rediscovering the
691 necessity is every process again.
692 Implemented by Ulrich Drepper.
694 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
695 Implemented by Adam Tkac.
697 * Optimized iconv conversions for S390x.
698 Implemented by Andreas Krebbel.
700 * Using condvars with PI mutexes is now more efficient due to kernel
701 support for requeueing to PI futexes. NPTL support added for x86-64.
702 Implemented by Ulrich Drepper.
704 * New locales: ps_AF, my_MM
708 * The following bugs are resolved with this release:
710 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
711 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
712 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
713 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
714 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
716 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
717 Implemented by Ulrich Drepper.
719 * New Linux interfaces: accept4, fallocate, fallocate64.
720 Implemented by Ulrich Drepper.
722 * Correct declarations of string function when used in C++ code. This
723 could lead to compile errors for invalid C++ code.
725 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
728 * New POSIX 2008 interface: psiginfo
729 Implemented by Ulrich Drepper.
731 * New ISO C++1x interfaces: quick_exit, at_quick_exit
732 Implemented by Ulrich Drepper.
734 * Support for selecting between multiple function definitions at runtime
735 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
737 * The libcrypt library can now use the hash function implementations in
738 NSS. Implemented by Ulrich Drepper.
740 * The malloc implementation can be compiled to be less memory efficient
741 but higher performing in multi-threaded programs.
742 Implemented by Ulrich Drepper.
744 * New locales: nan_TW@latin, ks_IN
746 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
747 Implemented by Ulrich Drepper.
749 * Extended printf hook support. It is possible to use user-defined types
750 and extend existing format specifiers.
751 Implemented by Ulrich Drepper.
753 * Handling for group shadow files has been added.
754 Implemented by Ulrich Drepper.
756 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
757 servers (the case, e.g., for some people using the built-in DNS
758 server in ADSL modems/routers). There is a once-per-process timeout
759 in case of a broken server. To avoid it, users can run nscd or put
760 'options single-request' in /etc/resolv.conf.
761 Implemented by Ulrich Drepper.
765 * The following bugs are resolved with this release:
767 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
768 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
769 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
770 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
771 6968, 6974, 6980, 6995, 7008, 7009, 7029
773 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
774 up at the same time. Implemented by Ulrich Drepper.
776 * TLS descriptors for LD and GD on x86 and x86-64.
777 Implemented by Alexandre Oliva.
779 * getaddrinfo now handles DCCP and UDPlite.
780 Implemented by Ulrich Drepper.
782 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
783 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
784 Implemented by Ulrich Drepper.
786 * New implementation of memmem, strstr, and strcasestr which is O(n).
787 Implemented by Eric Blake.
789 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
791 * Implement "e" option for popen to open file descriptor with the
792 close-on-exec flag set. Implemented by Ulrich Drepper.
794 * Implement "b" mode for fmemopen. In this mode writes writes don't
795 implicitly add a NUL byte and seeks from the end of the buffer really
796 use the buffer end, not the string length as the basis.
797 Implemented by Ulrich Drepper.
799 * Many functions, exported and internal, now atomically set the close-on-exec
800 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
802 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
804 Implemented by Pravin Satpute.
806 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
810 * The following bugs are resolved with this release:
812 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
813 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
814 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
815 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
816 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
817 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
818 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
820 * New locales: bo_CN, bo_IN, shs_CA.
822 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
824 * Sorting rules for some Indian languages (Devanagari and Gujarati).
825 Implemented by Pravin Satpute.
827 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
829 * nscd caches now all timeouts for DNS entries
830 Implemented by Ulrich Drepper.
832 * nscd is more efficient and wakes up less often.
833 Implemented by Ulrich Drepper.
835 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
836 vdprintf, and obstack_vprintf.
837 Implemented by Jakub Jelinek.
839 * Faster memset for x86-64.
840 Implemented by Harsha Jagasia and H.J. Lu.
842 * Faster memcpy on x86.
843 Implemented by Ulrich Drepper.
845 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
846 Implemented by Ulrich Drepper.
848 * Faster sqrt and sqrtf implemention for some PPC variants.
849 Implemented by Steven Munroe.
853 * The following bugs are resolved with this release:
855 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
856 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
857 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
858 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
859 5071, 5103, 5104, 5112, 5113, 5184, 5186
861 * More checking functions: fread, fread_unlocked, open*, mq_open.
862 Implemented by Jakub Jelinek and Ulrich Drepper.
864 * Extend fortification to C++. Implemented by Jakub Jelinek.
866 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
867 by not recognizing 'a' as a modifier when those specs are requested.
868 Implemented by Jakub Jelinek.
870 * PPC optimizations to math and string functions.
871 Implemented by Steven Munroe.
873 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
874 options to be passed. Implemented by Ulrich Drepper.
876 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
878 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
879 Implemented by Ulrich Drepper.
881 * Handle private futexes in the NPTL implementation.
882 Implemented by Jakub Jelinek and Ulrich Drepper.
884 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
885 Implemented by Roland McGrath and Ulrich Drepper.
887 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
889 * SHA-256 and SHA-512 based password encryption.
890 Implemented by Ulrich Drepper.
892 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
893 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
896 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
897 Implemented by Ulrich Drepper.
901 * The following bugs are resolved with this release:
903 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
904 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
905 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
906 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
907 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
908 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
909 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
912 * New Linux interfaces: epoll_pwait, sched_getcpu.
914 * New generic interfaces: strerror_l.
916 * nscd can now cache the services database. Implemented by Ulrich Drepper.
920 * The following bugs are resolved with this release:
922 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
923 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
924 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
925 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
926 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
927 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
928 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
929 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
930 3225, 3251, 3252, 3253, 3273
932 * For Linux, the sorting of addresses returned by getaddrinfo now also
933 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
934 Implemented by Ulrich Drepper.
936 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
937 Implemented by Ulrich Drepper.
939 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
941 * New iconv module for MIK. Contributed by Alexander Shopov.
943 * For sites with broken group and/or passwd database, the auto-propagate
944 option of nscd can prevent creating ID lookup entries from the results
945 of a name lookup and vice versa. This usually is no problem but some
946 site might have problems with the default behavior.
947 Implemented by Ulrich Drepper.
949 * Iterating over entire database in NIS can be slow. With the
950 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
951 to trade time for memory. The entire database will be read at once.
952 Implemented by Ulrich Drepper.
954 * The interfaces introduced in RFC 3542 have been implemented by
957 * Support for the new ELF hash table format was added by Ulrich Drepper.
959 * Support for priority inheritance mutexes added by Jakub Jelinek and
962 * Support for priority protected mutexes added by Jakub Jelinek.
964 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
965 or_IN, csb_PL, fy_NL, sr_ME.
969 * More overflow detection functions.
971 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
972 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
974 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
975 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
976 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
977 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
978 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
979 by Masahide Washizawa.
981 * It is now possible to install audit libraries for the dynamic linker using
982 LD_AUDIT. Implemented by Ulrich Drepper.
984 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
985 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
986 For a libc and libpthread that works well on Linux 2.4 kernels, we
987 recommend using the stable 2.3 branch.
989 * The new function open_wmemstream acts like open_memstream,
990 but uses a wchar_t wide character buffer.
992 * The new function ppoll is an improved version of poll, similar to pselect.
994 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
995 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
996 renameat, unlinkat, linkat, symlinkat, readlinkat.
998 * New Linux kernel system calls: unshare,
999 inotify_init, inotify_add_watch, inotify_rm_watch.
1001 * The euidaccess function is now also known by the alias eaccess,
1002 for compatibility with some other systems.
1004 * Timezone data updated to 2006b version.
1008 * The following bugs are resolved with this release:
1010 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1011 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1012 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1013 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1014 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1015 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1017 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1019 * As of this release, GCC 4 can be used to compile the C Library.
1021 * Timezone data updated to 2005m version.
1025 * The following bugs are resolved with this release:
1027 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1028 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1029 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1030 777, 787, 821, 822, 823, 825
1032 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1036 * Support for RFC 3678. Real implementations exist only for Linux so far.
1037 Implemented by Ulrich Drepper.
1039 * nscd can now cache entries persistently. Expiring entries are reloaded.
1040 For speedups the cache can be shared in memory with client processes.
1041 Implemented by Ulrich Drepper.
1043 * nscd can now perform SELinux checks.
1044 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1046 * getaddrinfo queries are now cached. Canonical name lookup is performed
1048 Implemented by Ulrich Drepper.
1050 * The nothrow function attribute is used when headers are used by gcc when
1051 compiling C code. This can avoid significant amounts of exception
1054 * The malloc functions perform more error checking and are stricter when
1055 it comes to reacting on errors. The default action is to terminate
1056 the process after showing an error message. Implemented by Ulrich Drepper.
1058 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1059 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1061 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1062 namespaces using the new function dlmopen(). This feature is of course,
1063 like most other dynamic loading functionality, not available in statically
1064 linked applications. Implemented by Ulrich Drepper.
1066 * Low-overhead boundary checking variants of string and some stdio functions
1067 were added. These are to be used in conjunction with a gcc patch by
1068 Jakub Jelinek which adds calls to these functions if possible.
1069 Implemented by Jakub Jelinek and Ulrich Drepper.
1071 * Old code for several operating systems and machine architectures that
1072 have not been in working condition in a long time have been removed from
1073 the main source tree maintained by the GNU C Library's maintainers.
1074 These files are now reside in the separate `ports' source module
1075 that is usable as an add-on when building the library.
1079 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1080 interrogate the dynamic linker, compatible with the Solaris interface.
1082 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1083 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1085 * getifaddrs now uses the netlink interface on Linux to get its information.
1086 Implemented by Thorsten Kukuk.
1088 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1089 Implemented by Ulrich Drepper.
1091 * support for non-executable stacks on x86 has been added. Changes mostly
1094 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1097 * getaddrinfo now performs destination address selection according to
1102 * Thread-safe interfaces for many functions that access locale data
1103 were added in version 2.3, but these features were omitted from NEWS.
1104 Many functions have variants with an `_l' suffix that take a `locale_t'
1105 object as a parameter rather than consulting the current locale.
1106 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1107 create and maintain `locale_t' objects. Additionally, the new function
1108 `uselocale' sets "the current locale" (as used by functions not so
1109 parameterized) set for an individual thread. These features were added
1110 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1112 * The functions getresuid, getresgid, setresuid, and setresgid, which
1113 have long been available on Linux, are now declared in <unistd.h>
1114 and are now also available on the Hurd.
1116 * ELF thread-local storage support (TLS) now works on x86-64.
1118 * The new dynamic string token $LIB is expanded in shared library names.
1119 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1121 * Aldy Hernandez contributed complete software floating point support for
1122 PowerPC machines with no FPU.
1124 * fexecve is implemented on Linux.
1126 * The `btowc' function should work at least twice as fast due to
1127 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1129 * With approriate thread add-ons cancelable functions are now implemented
1130 in libc.so as well. No need to call the function in libpthread. This
1131 change allowed to finally disable the incorrect and expensive handling
1132 of weak definition in ld.so.
1134 * Yet more PLT entries in libc.so have been removed. We finally arrived
1135 at the bare minimum. Startup times improved appropriately.
1137 * Support for the new Linux/x86 system call interface was added. The
1138 AT_SYSINFO auxiliary vector entry is recognized and handled.
1142 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1145 * iconv (the program and the interface) now accepts empty names (excluding
1146 options like //TRANSLIT) to mean "use charset of current locale".
1148 * localedef can now transliterate characters in strings which are not in
1149 the provided charmap. The information from the input locale is used.
1151 * Prelinking support was added for ELF targets. This requires additional
1152 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1154 * Read-only stdio streams now use mmap to speed up operation by eliminating
1155 copying and buffer underflows. To use add 'm' to the mode string of
1156 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1158 * The malloc functions were completely rewritten by Wolfram Gloger based
1159 on Doug Lea's malloc-2.7.0.c.
1161 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1162 implementation of regex.
1164 * Bruno Haible upgraded the iconv and locale implementation to support
1167 * Contents of the LC_* and LANG environment variables in the CEN style are
1168 not recognized anymore. It never was used. Change by Ulrich Drepper.
1170 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1171 thread-local storage (TLS) ABI on some platforms.
1172 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1174 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1175 EUC-JISX0213, and TSCII.
1177 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1178 BSD-compatible interface for getting all network interface addresses.
1179 Implementation for IPv4 by Roland McGrath.
1181 * Loading of locale data is faster due to the introduction of a locale
1182 archive. Implemented by Roland McGrath and Ulrich Drepper.
1184 * Startup times are significantly reduced by not using exported functions
1185 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1188 * Steven Munroe contributed a port to PowerPC64/Linux.
1192 * The Hurd now uses the GNU libio implementation of stdio rather than the
1193 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1195 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1196 with the same behavior as the Linux system call of the same name.
1200 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1201 128-bit long double format.
1203 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1204 IBM1161, and IBM1162 charsets.
1206 * Andreas Jaeger contributed a port to x86-64/Linux.
1208 * Peter Bruin contributed a port to PowerPC/Hurd.
1210 * libc functions using I/O streams now can handle wide-oriented streams
1213 * optimizations in the dynamic linker. Binaries created by recent binutils
1214 versions start up quicker due to reduced time spent on relocations.
1216 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1220 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1221 asinh, atanh, j0 for the 128-bit long double format.
1223 * Bruno Haible updated all the code handling Unicode in some form to
1224 support Unicode 3.1.
1226 * Speed of regex for single-byte locales is back to previous levels.
1227 Patch by Isamu Hasegawa.
1229 * Alpha, SPARC, and IA-64 now also using floating stacks.
1231 * Startup time of internationalized applications greatly improved through
1232 iconv cache. Use iconvconfig to generate the cache file.
1233 Contributed by Ulrich Drepper.
1235 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1236 severe performance problems. Patch by David Mosberger.
1238 * The Hurd port got a lot more functionality like AIO, various stdio
1239 extensions, etc. Mainly done by Roland McGrath.
1241 * mtrace can now lookup symbols in shared libraries.
1245 * Intel's IA-64 math library is largely integrated. It provides fast and
1246 accurate implementatations for most basic and standard math functions
1247 in float, double, and long double format.
1249 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1250 and asin for the 96-bit long double format and asin, log, tan for the
1251 128-bit long double format.
1253 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1254 The basic double functions exist today. Contributed by Abraham Ziv
1255 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1256 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1258 * An asynchronous name lookup library was added. The interface is designed
1259 after POSIX AIO. The proposal was circulated beforehand to get comments.
1260 No negative ones came in. Implemented by Ulrich Drepper.
1262 * Port to S390/64bit contributed by Martin Schwidefsky
1263 <schwidefsky@de.ibm.com>.
1265 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1266 of functions for Linux/IA-64.
1268 * The RPC code is now thread safe. Threads can now use the same service
1269 of different services at the same time. Patch by Eric Norum
1270 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1272 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1273 family of functions for Linux/S390.
1275 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1276 of functions for Linux/x86.
1278 * Port to Linux/CRIS contributed by Axis Communications.
1282 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1283 we can now check for namespace violations and missing declarations. The
1284 result is that almost all headers are now Unix-compliant (as defined in
1285 the upcoming XPG6). The negative side is that some programs might need
1286 corrections, too, if they depend on the incorrect form of the headers in
1287 previous versions which defined too many symbols and included too many
1290 * regex now handles multibyte character sets correctly.
1291 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1293 * iconv (the program) does now conform to the upcoming XPG6 and handles
1294 charmaps. Instead of the charset names the path of charmaps can be
1295 provided and the conversion happens based on this data.
1296 Contributed by Ulrich Drepper.
1298 * The locale program now provides detailed information about the installed
1303 only lists the names of the supported locales
1307 provides details such as country, language, and codeset name.
1308 Contributed by Ulrich Drepper.
1312 * The gencat program now parses the input file according to the charset
1313 selected by the LC_CTYPE category. This is important for stateful
1314 character sets. To make generating catalogs easier there is a way
1315 to overwrite the charset selected by the locale: before the first
1316 message or $ quote line the catalog can contain a line like
1318 $ codeset=ISO-8859-2
1320 to select the charset (ISO-8859-2 in this case).
1322 Implemented by Shinya Hanataka and Ulrich Drepper.
1324 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1325 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1326 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1328 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1329 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1331 * The LANGUAGE environment variable is now ignored unless the locale is
1332 changed from the default "C" locale.
1334 * The usual bug fixes.
1338 * Greg McGary added runtime support for bounds checking using gcc's
1339 new -fbounded-pointers option. ix86 target is complete. PowerPC
1342 * Thorsten Kukuk added secure mode support to nscd.
1344 * The Berkeley db libraries have been removed.
1346 Related, the nss_db module is now in a separate package since it
1347 obviously requires a database library being available.
1349 * Wide character I/O streams implemented by Ulrich Drepper.
1351 * Functions from the extended socket API added by Ulrich Drepper.
1353 * Functions feenableexcept and fedisableexcept to control the
1354 behaviour of individual exceptions have been added by Andreas Jaeger.
1356 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1358 * The resolver code has been updated from bind 8.2.3-T5B which supports
1359 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1362 This change could in some situations effect backward compatibility. Since
1363 now `_res' is a thread-local instead of a global variable, modifying it
1364 in one thread does not have any effect in other threads.
1366 The resolver library was also extended to allow IPv6 as the transport
1367 protocol for the requests. This work was done by Stig Venaas.
1369 * Compatibility code for K&R C compilers has been removed from the
1370 header files. A ISO C compiler is needed to use the library
1371 (conforming to either C89 or C99 standard).
1373 * Complete rewrite of the localedef program to support multibyte character
1374 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1375 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1376 Implemented by Ulrich Drepper.
1378 Bruno Haible significantly improved the generation and use of the data
1379 structures for the wide character tables.
1381 * Plural handling in gettext implemented by Ulrich Drepper.
1383 * The utmp daemon has been removed.
1385 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1387 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1390 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1392 * POSIX barriers implemented by Kaz Kylheku.
1394 * POSIX spawn function family implemented by Ulrich Drepper.
1396 * POSIX spinlocks are now available.
1398 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1400 * the configure option --enable-kernel=X.Y.Z allows to strip out
1401 compatibility for kernel versions before X.Y.Z. This is currently only
1402 implemented for Linux.
1404 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1405 field sin6_scope_id. This means that all programs using IPv6 should be
1406 recompiled. Don't expect binary compatibility with previous glibc
1409 * various conversion modules for IBM character sets contributed by
1412 * IA-64 port by Jes Sorensen and HJ Lu.
1426 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1428 * New xdr functions are added; some rpc functions are now 64bit clean.
1430 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1432 * Fixed known incompatibilities with glibc 2.0.
1434 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1436 * Optimized a number of functions (especially the ELF dynamic loader).
1438 * Update timezone data files.
1440 * lots of charmaps corrections
1442 * some new locale definitions and charmaps
1447 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1448 conform to POSIX member type requirements. Symbol versions have been
1449 adjusted as needed within the library, and for direct use by applications,
1450 but there is potential for problems if third-party libraries use
1451 struct timeval as part of their interface. This does not present
1452 a problem for X and other "essential" system libraries.
1454 * An additional locale model to support C++ Standard Library locale
1455 model and probably more was implemented by Ulrich Drepper.
1457 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1460 * Miles Bader provided the `argp' function family to support hierachical
1461 command line argument parsing, layered on top of getopt.
1463 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1465 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1468 * scanf recognizes the %a and %A format for scanning floating point numbers.
1470 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1471 information and interfaces for the available integer types.
1473 * about 130 new math functions were added to implement the ISO C9x math
1476 * the new header <complex.h> contains definitions of the complex math
1477 functions from ISO C 9X.
1479 * the new header <tgmath.h> defines generic macros to use complex or
1480 real valued functions.
1482 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1484 * Andreas Jaeger provided a test suite for the math library.
1486 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1488 * Ulrich Drepper added character set conversion functions (iconv).
1490 * Optimized string functions have been added.
1492 * The localedata addon is now part of glibc.
1494 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1496 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1497 daemon for NSS (nscd).
1499 Missing a better place here are some numbers on improvements. Under
1500 Linux 2.1.125 un-tar-ing the kernel sources takes
1504 using local files 12.19s 6.88s 22.91s
1506 using NIS 13.92s 8.91s 26.34s
1508 using NIS & nscd 10.37s 7.34s 25.30s
1510 using NIS+ 27.57s 30.37s 640.46s
1512 using NIS+ & nscd 10.25s 7.83s 26.51s
1514 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1516 Keep in mind that non-namelookup related operations dominate above times.
1517 It was just a common complain that using NIS+ unpacking the kernel is
1520 [1] The old nscd implementation is not available anymore since it was
1521 distributed with glibc up to version 2.0.98 and thus is now replaced.
1523 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1525 * Mark Kettenis provided a Hesiod NSS module.
1527 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1528 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1530 * rcmd can now handle netgroups (Dick Streefland).
1532 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1535 * Support for the IPv6 protocol has been added to the socket API, as per the
1536 latest draft standards.
1538 * Support for Linux 2.2 has been added.
1540 * Interface changes relative to the latest 2.0.x release:
1541 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1542 addseverity NEW: Unix98
1543 alphasort64 NEW: LFS
1544 argp_err_exit_status NEW: argp, GNU ext
1545 argp_error NEW: argp, GNU ext
1546 argp_failure NEW: argp, GNU ext
1547 argp_help NEW: argp, GNU ext
1548 argp_parse NEW: argp, GNU ext
1549 argp_program_bug_address NEW: argp, GNU ext
1550 argp_program_version NEW: argp, GNU ext
1551 argp_program_version_hook NEW: argp, GNU ext
1552 argp_state_help NEW: argp, GNU ext
1553 argp_usage NEW: argp, GNU ext
1554 authdes_create NEW: Secure RPC
1555 authdes_getucred NEW: Secure RPC
1556 authdes_pk_create NEW: Secure RPC
1557 backtrace NEW: GNU ext.
1558 backtrace_symbols NEW: GNU ext.
1559 backtrace_symbols_fd NEW: GNU ext.
1561 cacosf NEW: ISO C 9x
1562 cacosh NEW: ISO C 9x
1563 cacoshf NEW: ISO C 9x
1564 cacoshl NEW: ISO C 9x
1565 cacosl NEW: ISO C 9x
1572 casinf NEW: ISO C 9x
1573 casinh NEW: ISO C 9x
1574 casinhf NEW: ISO C 9x
1575 casinhl NEW: ISO C 9x
1576 casinl NEW: ISO C 9x
1578 catanf NEW: ISO C 9x
1579 catanh NEW: ISO C 9x
1580 catanhf NEW: ISO C 9x
1581 catanhl NEW: ISO C 9x
1582 catanl NEW: ISO C 9x
1583 cbc_crypt NEW: Secure RPC
1587 ccoshf NEW: ISO C 9x
1588 ccoshl NEW: ISO C 9x
1594 cimagf NEW: ISO C 9x
1595 cimagl NEW: ISO C 9x
1596 clearerr_locked REMOVED
1597 clntunix_create NEW: sunrpc ext
1599 clog10 NEW: ISO C 9x
1600 clog10f NEW: ISO C 9x
1601 clog10l NEW: ISO C 9x
1611 cprojf NEW: ISO C 9x
1612 cprojl NEW: ISO C 9x
1614 crealf NEW: ISO C 9x
1615 creall NEW: ISO C 9x
1620 csinhf NEW: ISO C 9x
1621 csinhl NEW: ISO C 9x
1624 csqrtf NEW: ISO C 9x
1625 csqrtl NEW: ISO C 9x
1629 ctanhf NEW: ISO C 9x
1630 ctanhl NEW: ISO C 9x
1632 des_setparity NEW: Secure RPC
1633 ecb_crypt NEW: Secure RPC
1634 endutxent NEW: Unix98
1636 exp10f NEW: ISO C 9x
1637 exp10l NEW: ISO C 9x
1641 fattach NEW: STREAMS
1642 fdetach NEW: STREAMS
1646 feclearexcept NEW: ISO C 9x
1647 fegetenv NEW: ISO C 9x
1648 fegetexceptflag NEW: ISO C 9x
1649 fegetround NEW: ISO C 9x
1650 feholdexcept NEW: ISO C 9x
1652 feraiseexcept NEW: ISO C 9x
1653 ferror_locked REMOVED
1654 fesetenv NEW: ISO C 9x
1655 fesetexceptflag NEW: ISO C 9x
1656 fesetround NEW: ISO C 9x
1657 fetestexcept NEW: ISO C 9x
1658 feupdateenv NEW: ISO C 9x
1659 fflush_locked REMOVED
1663 fgets_unlocked NEW: GNU ext.
1664 fileno_locked REMOVED
1676 fputc_locked REMOVED
1677 fputs_unlocked NEW: GNU ext.
1678 fread_unlocked NEW: GNU ext.
1683 fstatvfs NEW: Unix98
1687 ftruncate64 NEW: LFS
1689 fwrite_unlocked NEW: GNU ext.
1690 gai_strerror NEW: IPv6
1694 getchar_locked REMOVED
1696 getdate_err NEW: Unix98
1697 getdate_r NEW: GNU ext.
1699 getnameinfo NEW: IPv6
1700 getnetname NEW: Secure RPC
1701 getpmsg NEW: STREAMS
1702 getpt NEW: Unix98 PTY
1703 getrlimit64 NEW: LFS
1704 getutxent NEW: Unix98
1705 getutxid NEW: Unix98
1706 getutxline NEW: Unix98
1707 glob64 NEW: GNU ext.
1708 globfree64 NEW: GNU ext.
1709 gnu_get_libc_release NEW: GNU ext.
1710 gnu_get_libc_version NEW: GNU ext.
1711 grantpt NEW: Unix98 PTY
1712 host2netname NEW: Secure RPC
1714 iconv_close NEW: iconv
1715 iconv_open NEW: iconv
1716 if_freenameindex NEW: IPv6
1717 if_indextoname NEW: IPv6
1718 if_nameindex NEW: IPv6
1719 if_nametoindex NEW: IPv6
1720 in6addr_any NEW: IPv6
1721 in6addr_loopback NEW: IPv6
1722 inet6_isipv4mapped NEW: IPv6
1723 isastream NEW: STREAMS
1724 iswblank NEW: GNU ext.
1725 key_decryptsession NEW: Secure RPC
1726 key_decryptsession_pk NEW: Secure RPC
1727 key_encryptsession NEW: Secure RPC
1728 key_encryptsession_pk NEW: Secure RPC
1729 key_gendes NEW: Secure RPC
1730 key_get_conv NEW: Secure RPC
1731 key_secretkey_is_set NEW: Secure RPC
1732 key_setnet NEW: Secure RPC
1733 key_setsecret NEW: Secure RPC
1734 llrint NEW: ISO C 9x
1735 llrintf NEW: ISO C 9x
1736 llrintl NEW: ISO C 9x
1737 llround NEW: ISO C 9x
1738 llroundf NEW: ISO C 9x
1739 llroundl NEW: ISO C 9x
1744 lrintf NEW: ISO C 9x
1745 lrintl NEW: ISO C 9x
1746 lround NEW: ISO C 9x
1747 lroundf NEW: ISO C 9x
1748 lroundl NEW: ISO C 9x
1750 makecontext NEW: Unix98
1751 mempcpy NEW: GNU ext.
1754 modify_ldt NEW: kernel
1758 nearbyint NEW: ISO C 9x
1759 nearbyintf NEW: ISO C 9x
1760 nearbyintl NEW: ISO C 9x
1761 netname2host NEW: Secure RPC
1762 netname2user NEW: Secure RPC
1763 nexttoward NEW: ISO C 9x
1764 nexttowardf NEW: ISO C 9x
1765 nexttowardl NEW: ISO C 9x
1769 passwd2des NEW: Secure RPC
1771 pow10f NEW: GNU ext.
1772 pow10l NEW: GNU ext.
1775 printf_size NEW: GNU ext.
1776 printf_size_info NEW: GNU ext.
1777 profil_counter REMOVED
1778 pthread_mutexattr_getkind_np REPLACED
1779 pthread_mutexattr_setkind_np REPLACED
1780 ptsname NEW: Unix98 PTY
1781 ptsname_r NEW: Unix98 PTY
1783 putchar_locked REMOVED
1784 putgrent NEW: GNU ext.
1786 putpmsg NEW: STREAMS
1787 pututxline NEW: Unix98
1791 readdir64_r NEW: LFS
1792 remquo NEW: ISO C 9x
1793 remquof NEW: ISO C 9x
1794 remquol NEW: ISO C 9x
1796 roundf NEW: ISO C 9x
1797 roundl NEW: ISO C 9x
1799 scalbln NEW: ISO C 9x
1800 scalblnf NEW: ISO C 9x
1801 scalblnl NEW: ISO C 9x
1803 sendfile NEW: kernel
1804 setcontext NEW: Unix98
1805 setrlimit64 NEW: LFS
1806 setutxent NEW: Unix98
1808 sigignore NEW: Unix98
1809 sigqueue NEW: POSIX.1b
1810 sigrelse NEW: Unix98
1811 sigset NEW: POSIX.1b
1812 sigtimedwait NEW: POSIX.1b
1813 sigwaitinfo NEW: POSIX.1b
1814 sincos NEW: GNU ext.
1815 sincosf NEW: GNU ext.
1816 sincosl NEW: GNU ext.
1820 strcasestr NEW: GNU ext.
1821 strtoimax NEW: ISO C 9x
1822 strtoumax NEW: ISO C 9x
1823 strverscmp NEW: GNU ext.
1824 svcauthdes_stats NEW: Secure RPC
1825 svcunix_create NEW: sunrpc etx
1826 svcunixfd_create NEW: sunrpc ext
1827 swapcontext NEW: Unix98
1828 tcgetsid NEW: Unix98 PTY
1829 tdestroy NEW: GNU ext.
1830 tgamma NEW: ISO C 9x
1831 tgammaf NEW: ISO C 9x
1832 tgammal NEW: ISO C 9x
1836 truncf NEW: ISO C 9x
1837 truncl NEW: ISO C 9x
1839 unlockpt NEW: Unix98 PTY
1840 updwtmpx NEW: Unix98
1841 user2netname NEW: Secure RPC
1842 utmpxname NEW: Unix98
1843 versionsort NEW: GNU ext.
1844 versionsort64 NEW: GNU ext.
1846 wcscasecmp NEW: GNU ext.
1847 wcsncasecmp NEW: GNU ext.
1848 wcsnlen NEW: GNU ext.
1849 wcstoimax NEW: ISO C 9x
1850 wcstoll NEW: ISO C 9x
1851 wcstoull NEW: ISO C 9x
1852 wcstoumax NEW: ISO C 9x
1854 wordexp NEW: POSIX.2
1855 wordfree NEW: POSIX.2
1856 write_profiling REMOVED
1857 xdecrypt NEW: Secure RPC
1858 xdr_authdes_cred NEW: Secure RPC
1859 xdr_authdes_verf NEW: Secure RPC
1860 xdr_cryptkeyarg NEW: Secure RPC
1861 xdr_cryptkeyarg2 NEW: Secure RPC
1862 xdr_cryptkeyres NEW: Secure RPC
1863 xdr_getcredres NEW: Secure RPC
1864 xdr_key_netstarg NEW: Secure RPC
1865 xdr_key_netstres NEW: Secure RPC
1866 xdr_keybuf NEW: Secure RPC
1867 xdr_keystatus NEW: Secure RPC
1868 xdr_netnamestr NEW: Secure RPC
1869 xdr_sizeof NEW: Secure RPC
1870 xdr_unixcred NEW: sunrpc ext
1871 xencrypt NEW: Secure RPC
1872 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1883 * inet_ntoa is thread-safe
1885 * updwtmp is moved from libutil to libc
1887 * rewrite of cbrt function
1889 * update of timezone data
1903 * add atoll function
1905 * fix complex problems in Berkeley DB code
1907 * fix math functions
1911 * fixed lots of header problems (especially Linux/GNU specific)
1913 * dynamic loader preserves all registers
1915 * Roland McGrath provided support for handling of auxiliary objects in
1916 the ELF dynamic loader.
1918 * support for parallel builds is improved
1922 * GNU extensions are no longer declared by default. To enable them you
1923 must define the macro `_GNU_SOURCE' in your program or compile with
1926 * The library has changed from using GNU ld symbol aliases to using weak
1927 symbols where available. The ELF object file format supports weak
1928 symbols; GNU ld also supports weak symbols in the a.out format. (There
1929 is also now support for other GNU ld extensions in ELF. Use the
1930 `--with-elf' option to configure to indicate you have ELF, and
1931 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1932 of many files which contained only symbol aliases, reducing the size of
1933 the source and the compiled library; many other files were renamed to
1934 less cryptic names previously occupied by the symbol alias files.
1935 There is a new header file <elf.h> for programs which operate on
1936 files in the ELF format.
1938 * Converted to Autoconf version 2, so `configure' has more options.
1939 Run `configure --help' to see the details.
1941 * The library can now be configured to build profiling, highly-optimized
1942 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1943 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1944 `configure' enable building these extra libraries. The shared library is
1945 built by default when using both ELF and GNU ld. When shared libraries
1946 are enabled, the new library `-ldl' is available for arbitrary run-time
1947 loading of shared objects; its interface is defined in <dlfcn.h>. The
1948 new header file <link.h> gives access to the internals of the run-time
1949 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1950 application of same name on other systems and it provides information
1951 about dynamically linked binaries.
1953 * The C library now provides the run-time support code for profiling
1954 executables compiled with `-pg'. Programs can control the profiling code
1955 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1956 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1957 the support for this file format was contributed by David Mosberger-Tang.
1959 * The math code has been replaced with a math library based on fdlibm from
1960 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1961 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1962 functions. The math functions now reside in a separate library, so
1963 programs using them will need to use `-lm' their linking commands.
1965 * John C. Bowman contributed optimized ix87 assembler inline functions.
1967 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1968 mechanism similar to that found in Solaris 2. This is now used for the
1969 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1970 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1971 file controls what services are used for each individual database. This
1972 works by loading shared libraries with names specified in `nsswitch.conf',
1973 so service modules can be changed or added at any time without even
1974 relinking any program. Currently there are the file, db, and NIS based
1975 NSS services available.
1977 * The new functions `strtoq' and `strtouq' parse integer values from
1978 strings, like `strtol' and `strtoul', but they return `long long int' and
1979 `unsigned long long int' values, respectively (64-bit quantities).
1981 * The new functions `strtof' and `strtold' parse floating-point values from
1982 strings, like `strtod', but they return `float' and `long double' values,
1983 respectively (on some machines `double' and `long double' are the same).
1985 * Ulrich Drepper has contributed new implementations of the floating-point
1986 printing and reading code used in the `printf' family of functions and
1987 `strtod', `strtof', and `strtold'. These new functions are perfectly
1988 accurate, and much faster than the old ones.
1990 * The implementation of the POSIX locale model was completely rewritten by
1991 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1992 to compile the POSIX locale definition.
1994 * The former dummy implementations of the strcoll and strxfrm function are
1995 now replaced by fully functional code contributed by Ulrich Drepper. The
1996 collation information comes from the POSIX locale definitions.
1998 * The new header <langinfo.h> defines an interface for accessing
1999 various locale-dependent data (using the locale chosen with `setlocale').
2001 * Ulrich Drepper has contributed a new suite of functions for operation on
2002 wide-character and multibyte-character strings, in <wchar.h>;
2003 and classification and case conversion of wide characters, in <wctype.h>.
2004 These new functions are conforming to the ISO C, Amendement 1 specification.
2006 * There is now a second implementation of the standard I/O library available.
2007 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2008 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2010 * You can now use positional parameter specifications in format strings
2011 for the `printf' and `scanf' families of functions. For example,
2012 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2013 ``Number 6, Mr Jones''. This is mainly useful when providing different
2014 format strings for different languages, whose grammars may dictate
2015 different orderings of the values being printed. To support this
2016 feature, the interface for `register_printf_handler' has changed; see
2017 the header file <printf.h> for details.
2019 * The `printf' and `scanf' families of functions now understand a new
2020 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2021 to group numbers as indicated by the locale; for `scanf' and friends, this
2022 says to accept as valid only a number with all the proper grouping
2023 separators in the right places. In the default "C" locale, numbers are
2024 not grouped; but locales for specific countries will define the usual
2025 conventions (i.e. separate thousands with `,' in the US locale).
2027 * The pgrp functions have been regularized, slightly incompatibly but much
2028 less confusingly. The core functions are now `getpgid' and `setpgid',
2029 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2030 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2031 provided for compatibility. There is no longer an incompatible `getpgrp'
2032 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2034 * The new header file <fts.h> and suite of functions simplify programs that
2035 operate on directory trees. This code comes from 4.4 BSD.
2037 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2038 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2039 NSS scheme used in glibc.
2041 * There is a new malloc debugging hook `__memalign_hook'.
2043 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2044 `unsigned int' in <sys/types.h>. These are for compatibility only and
2045 their use is discouraged.
2047 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2048 done differently, so that it works even without GNU ld.
2050 * New function `euidaccess' checks allowed access to a file like `access',
2051 but using the effective IDs instead of the real IDs.
2053 * The time zone data files have been updated for the latest and greatest
2054 local time conventions of the countries of the world.
2056 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2059 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2060 for formatting floating-point numbers. They are provided only for
2061 compatibility; new programs should use `sprintf' instead. There are
2062 also equivalent function for the `long double' floating-point type and
2063 all functions also exist in a reentrant form.
2065 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2066 functions for maintaining the login-record files (primarily of use to
2067 system programs such as `login'), and convenient functions for
2068 allocating and initializing a pseudo-terminal (pty) device.
2070 * Ulrich Drepper has contributed new support for System V style
2071 shared memory and IPC on systems that support it.
2073 * Ulrich Drepper has contributed several miscellaneous new functions found
2074 in System V: The `hsearch' family of functions provide an effective
2075 implementation of hash tables; `a64l' and `l64a' provide a very simple
2076 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2079 * Ulrich Drepper has contributed new reentrant counterparts for the
2080 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2082 * Ulrich Drepper has contributed new, highly-optimized versions of several
2083 string functions for the i486/Pentium family of processors.
2085 * Ulrich Drepper has updated the Linux-specific code, based largely
2086 on work done in Hongjiu Lu's version of GNU libc for Linux.
2087 The GNU library now supports Linux versions 2.0.10 and later,
2088 using the ELF object file format (i[3456]86-*-linux).
2090 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2092 * David Mosberger-Tang and Richard Henderson have ported the C library
2093 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2094 dynamic linking support for ELF/Alpha.
2096 * Richard Henderson contributed several Alpha optimized assembler function
2097 for arithmetic and string handling.
2099 * Ulrich Drepper has contributed a new set of message catalog functions to
2100 support multiple languages using the <libintl.h> interface, for use with
2101 his new package GNU gettext. Translation volunteers have contributed
2102 catalogs of the library's messages in Spanish, German, and Korean.
2104 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2105 program and the `catgets' function for reading the catalog files it
2106 creates. (The <libintl.h> interface is preferred; we include the
2107 <nl_types.h> interface using `catgets' only for source compatibility with
2108 programs already written to use it.)
2110 * New header file <values.h> gives SVID-compatible names for <limits.h>
2113 * Various new macros, declarations, and small header files for compatibility
2116 * New function `group_member' is a convenient way to check if a process has
2117 a given effective group ID.
2119 * When using GCC 2.7 and later, the socket functions are now declared in a
2120 special way so that passing an argument of type `struct sockaddr_in *',
2121 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2122 `struct sockaddr *' type, does not generate a type-clash warning.
2124 * New function `error' declared in header file <error.h> is a convenient
2125 function for printing error messages and optionally exiting; this is the
2126 canonical function used in GNU programs. The new functions `err', `warn',
2127 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2128 doing the same thing.
2130 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2131 POSIX.2 `glob' function to do ~ and {...} expansion.
2133 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2134 `clearenv' which is used in POSIX.9 is also available.
2136 * New function `getsid' returns session ID number on systems that support it.
2138 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2139 files <db.h> and <mpool.h> provide a rich set of functions for several
2140 types of simple databases stored in memory and in files, and <ndbm.h> is
2141 an old `ndbm'-compatible interface using the `db' functions. Link with
2142 `-ldb' to get these functions.
2144 * New macro `strdupa' copies a string like `strdup', but uses local stack
2145 space from `alloca' instead of dynamic heap space from `malloc'.
2147 * New function `strnlen' is like `strlen' but searches only a given maximum
2148 number of characters for the null terminator. `stpncpy', `strndup' and
2149 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2152 * New function `statfs' in header <sys/statfs.h>.
2154 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2155 provide convenient functions for operating on blocks of null-terminated
2158 * A new suite of functions in <utmp.h> handle all the details of reading
2159 and writing the utmp file.
2161 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2164 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2165 completely POSIX compliant and also implemented the extended functionality
2166 to handle alternate digit representation and alternate era date formats.
2168 * Ulrich Drepper provided an implementation of the `strptime' function
2169 defined in XPG4.2 which transforms a string into a `struct tm' value.
2171 * Paul Eggert provided the tzselect shell script as part of the timezone
2172 code. The shell script makes it easy to select the correct timezone
2175 * The implementation of the malloc family of functions is completely replaced
2176 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2177 The implementation uses the mmap function (if available) and it is
2178 optimized for the use in multi threaded programs.
2180 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2181 functions. This new functionality is usable by specifying a special
2182 salt string and it is compatible with implementation on *BSD systems.
2184 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2185 `getsubopt' to handle second level command line options, `bsd_signal'
2186 to access BSD style `signal' functionality, the obsolete `regexp' style
2189 * the `lchown' function is available on system which support this
2192 * The implementation of the shadow password handling function was contributed
2195 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2197 * POSIX.1g support was added. The <sys/select.h> header is available,
2198 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2199 implementation of `getaddrinfo'.
2203 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2205 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2206 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2208 * The new function `daemon' from 4.4 BSD is useful for server programs that
2209 want to put themselves in the background.
2211 * Joel Sherrill has contributed support for several standalone boards that
2212 run without an operating system.
2214 * `printf', `scanf' and friends now accept a `q' type modifier for long
2215 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2217 * All of the code taken from BSD (notably most of the math and networking
2218 routines) has been updated from the BSD 4.4-Lite release.
2220 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2222 * The new functions `getdomainname' and `setdomainname' fetch or change the
2223 YP/NIS domain name. These are system calls which exist on systems which
2226 * The time zone data files have been updated for the latest international
2229 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2230 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2234 * The C library now includes support for Sun RPC, from Sun's free
2235 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2236 are included. (There is still no support for YP.)
2238 * Tom Quinn has contributed a port of the C library to SGI machines running
2239 Irix 4 (mips-sgi-irix4).
2241 * The new `lockf' function is a simplified interface to the locking
2242 facilities of `fcntl', included for compatibility.
2244 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2246 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2248 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2251 * The error message printed by `assert' for a failed assertion now includes
2252 the name of the program (if using GNU ld) and the name of the calling
2253 function (with versions of GCC that support this).
2255 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2257 * The library now includes the <sys/mman.h> header file and memory
2258 management functions `mmap', `munmap', `mprotect', `msync', and
2259 `madvise', on systems that support those facilities.
2261 * The interface for `mcheck' has changed slightly: the function called to
2262 abort the program when an allocation inconsistency is detected now takes
2263 an argument that indicates the type of failure. The new function
2264 `mprobe' lets you request a consistency check for a particular block at
2265 any time (checks are normally done only when you call `free' or `realloc'
2268 * It is now possible to easily cross-compile the C library, building on one
2269 system a library to run on another machine and/or operating system. All
2270 you need to do is set the variable `HOST_CC' in `configparms' to the
2271 native compiler for programs to run on the machine you are building on (a
2272 few generator programs are used on Unix systems); set `CC' to the
2275 * The new function `fexecve' (only implemented on the GNU system) executes
2276 a program file given a file descriptor already open on the file.
2280 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2281 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2283 * You can set the variable `libprefix' in `configparms' to specify a prefix
2284 to be prepended to installed library files; this makes it easy to install
2285 the GNU C library to be linked as `-lgnuc' or whatever.
2287 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2288 copies a limited number of characters from a string, and returns the
2289 address of the last character written.
2291 * You no longer need to check for whether the installed `stddef.h' is
2292 compatible with the GNU C library. configure now checks for you.
2294 * You can now define a per-stream `fileno' function to convert the
2295 stream's cookie into an integral file descriptor.
2297 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2298 allocates zero bytes of storage, and returns a unique pointer which
2299 you can pass to `realloc' or `free'. The behavior is undefined if
2300 you dereference this pointer.
2302 * The C library now runs on Sony NEWS m68k machines running either
2303 NewsOS 3 or NewsOS 4.
2305 * The new `syscall' function is a system-dependent primitive function
2306 for invoking system calls. It has the canonical behavior on Unix
2307 systems, including unreliable return values for some calls (such as
2308 `pipe', `fork' and `getppid').
2310 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2311 to `EAGAIN', which is the preferred name. On systems whose kernels
2312 use two distinct codes, the C library now translates EWOULDBLOCK to
2313 EAGAIN in every system call function.
2317 * The GNU C Library Reference Manual is now distributed with the library.
2318 `make dvi' will produce a DVI file of the printed manual.
2319 `make info' will produce Info files that you can read on line using C-h i
2320 in Emacs or the `info' program.
2321 Please send comments on the manual to bug-glibc-manual@gnu.org.
2323 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2325 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2327 * Jason Merrill has contributed a port to the Sequent Symmetry running
2328 Dynix version 3 (i386-sequent-dynix).
2330 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2331 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2333 * New function `memory_warnings' lets you arrange to get warnings when
2334 malloc is running out of memory to allocate, like Emacs gives you.
2336 * The C library now contains the relocating allocator used in Emacs 19 for
2337 its editing buffers. This allocator (ralloc) minimizes allocation
2338 overhead and fragmentation by moving allocated regions around whenever it
2339 needs to. You always refer to a ralloc'd region with a "handle" (a
2340 pointer to a pointer--an object of type `void **').
2342 * There is a new `printf' format: `%m' gives you the string corresponding
2343 to the error code in `errno'.
2345 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2346 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2347 pass, the `a' modifier says to fill in a `char **' you pass with a
2350 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2351 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2352 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2354 * `mkstemp' is a traditional Unix function to atomically create and open a
2355 uniquely-named temporary file.
2359 * The standard location for the file that says what the local timezone is
2360 has changed again. It is now `/usr/local/etc/localtime' (or more
2361 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2363 * The distribution no longer contains any files with names longer than 14
2366 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2367 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2369 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2373 * The configuration process has changed quite a bit. The `configure'
2374 script is now used just like the configuration scripts for other GNU
2375 packages. The `sysdeps' directory hierarchy is much rearranged.
2376 The file `INSTALL' explains the new scheme in detail.
2378 * The header files no longer need to be processed into ANSI C and
2379 traditional C versions. There is just one set of files to install, and
2380 it will work with ANSI or old C compilers (including `gcc -traditional').
2382 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2383 MIPS DECStation running Ultrix 4.
2385 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2386 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2387 made itself into a shared library.
2389 * Yet further improved support for the i386, running 4.3 BSD-like systems
2390 (such as Mach 3 with the Unix single-server), or System V.
2392 * New function `strncasecmp' to do case-insensitive string comparison
2393 with limited length.
2395 * New function `strsep' is a reentrant alternative to `strtok'.
2397 * New functions `scandir' and `alphasort' for searching directories.
2399 * New function `setenv' is a better interface to `putenv'.
2401 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2402 function for traversing a directory tree.
2404 * The GNU obstack package is now also part of the C library.
2405 The new function `open_obstack_stream' creates a stdio stream that
2406 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2407 formatted output directly to an obstack.
2409 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2410 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2412 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2414 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2415 things to your strings.
2417 * There are some new test programs: test-fseek, testmb, and testrand.
2419 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2420 These ports are not finished, but are a good starting place for really
2421 supporting those systems.
2423 * `/etc/localtime' is now the standard location for the file that says what
2424 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2425 This follows the general principle that `/etc' is the place for all local
2426 configuration files.
2428 * The C library header files now use `extern "C"' when used by the C++
2429 compiler, so the C library should now work with C++ code.
2431 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2432 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2435 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2436 function which uses the `merge sort' algorithm, and is said to be
2437 significantly faster than the old GNU `qsort' function. Merge sort is
2438 now the standard `qsort' function. The new algorithm can require a lot
2439 of temporary storage; so, the old sorting function is called when the
2440 required storage is not available.
2442 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2443 provides the Unix `crypt' function, plus some other entry points.
2445 * The code and header files taken from 4.4 BSD have been updated with the
2446 latest files released from Berkeley.
2448 ----------------------------------------------------------------------
2449 Copyright information:
2451 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2453 Permission is granted to anyone to make or distribute verbatim copies
2454 of this document as received, in any medium, provided that the
2455 copyright notice and this permission notice are preserved,
2456 thus giving the recipient permission to redistribute in turn.
2458 Permission is granted to distribute modified versions
2459 of this document, or of portions of it,
2460 under the above conditions, provided also that they
2461 carry prominent notices stating who last changed them.
2464 version-control: never
projects / platform / upstream / glibc.git / blob