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 16916, 16917, 16922, 16927, 16928, 16932, 16943.
22 * The minimum Linux kernel version that this version of the GNU C Library
23 can be used with is 2.6.32.
25 * Running the testsuite no longer terminates as soon as a test fails.
26 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
27 with PASS or FAIL lines for individual tests. A summary of the results is
28 printed, including a list of failing lists, and "make check" exits with
29 error status if there were any unexpected failures. "make check
30 stop-on-test-failure=y" may be used to keep the old behavior.
32 * The am33 port, which had not worked for several years, has been removed
35 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
36 supported; they now act the same as _DEFAULT_SOURCE (but generate a
37 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
38 conflicted with POSIX (support for which was removed in 2.19), the
39 interfaces those macros enabled remain available when compiling with
40 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
43 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
45 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
46 This may improve lock scaling of existing programs on TX capable systems.
47 The lock elision code is only built with --enable-lock-elision=yes and
48 then requires a GCC version supporting the TX builtins. With lock elision
49 default mutexes are elided via __builtin_tbegin, if the cpu supports
50 transactions. By default lock elision is not enabled and the elision code
55 * The following bugs are resolved with this release:
57 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
58 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
59 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
60 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
61 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
62 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
63 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
64 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
65 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
66 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
67 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
68 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
69 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
70 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
71 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
72 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
73 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
74 16431, 16453, 16474, 16506, 16510, 16529
76 * Slovenian translations for glibc messages have been contributed by the
77 Translation Project's Slovenian team of translators.
79 * The public headers no longer use __unused nor __block. This change is to
80 support compiling programs that are derived from BSD sources and use
81 __unused internally, and to support compiling with Clang's -fblock
82 extension which uses __block.
84 * CVE-2012-4412 The strcoll implementation caches indices and rules for
85 large collation sequences to optimize multiple passes. This cache
86 computation may overflow for large collation sequences and may cause a
87 stack or buffer overflow. This is now fixed to use a slower algorithm
88 which does not use a cache if there is an integer overflow.
90 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
91 rules for large collation sequences to optimize multiple passes and falls
92 back to alloca if malloc fails, resulting in a possible stack overflow.
93 The implementation now falls back to an uncached collation sequence lookup
96 * CVE-2013-4788 The pointer guard used for pointer mangling was not
97 initialized for static applications resulting in the security feature
98 being disabled. The pointer guard is now correctly initialized to a
99 random value for static applications. Existing static applications need
100 to be recompiled to take advantage of the fix (bug 15754).
102 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
103 to the d_name member of struct dirent, or omit the terminating NUL
104 character. (Bugzilla #14699).
106 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
107 aligned_alloc functions could allocate too few bytes or corrupt the
108 heap when passed very large allocation size values (Bugzilla #15855,
111 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
112 for AF_INET6 has been fixed (Bugzilla #16072).
114 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
115 pap_CW, quz_PE, the_NP.
117 * Substantially revised locales: gd_GB, ht_HT
119 * The LC_ADDRESS field was updated to support country_car for almost all
122 * ISO 1427 definitions were updated.
124 * ISO 3166 definitions were updated.
126 * The localedef utility now supports --big-endian and --little-endian
127 command-line options to generate locales for a different system from that
128 for which the C library was built.
130 * Binary locale files now only depend on the endianness of the system for
131 which they are generated and not on other properties of that system. As a
132 consequence, binary files generated with new localedef may be incompatible
133 with old versions of the GNU C Library, and binary files generated with
134 old localedef may be incompatible with this version of the GNU C Library,
135 in the following circumstances:
137 + Locale files may be incompatible on m68k systems.
139 + Locale archive files (but not separate files for individual locales) may
140 be incompatible on systems where plain "char" is signed.
142 * The configure option --disable-versioning has been removed. Builds with
143 --disable-versioning had not worked for several years.
145 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
146 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
148 * SystemTap probes for malloc have been introduced.
150 * SystemTap probes for slow multiple precision fallback paths of
151 transcendental functions have been introduced.
153 * Support for powerpc64le has been added.
155 * The soft-float powerpc port now supports e500 processors.
157 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
159 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
160 set of header declarations that are enabled by default, even when other
161 feature test macros or compiler options such as -std=c99 would otherwise
162 disable some of those declarations.
164 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
165 conflict with POSIX. The libbsd-compat library (which was a dummy library
166 that did nothing) has also been removed.
168 * Preliminary documentation about Multi-Thread, Async-Signal and
169 Async-Cancel Safety has been added.
171 * Change of ABI data structures for s390 and s390x:
172 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
173 allow for future hardware extensions. All library functions that accept or
174 return these structures were versioned in order to provide backwards
175 compatibility with existing code. However, not all cases can be handled
176 with interface versioning. If an application embeds either structure into
177 another structure and that structure is passed to another compilation unit
178 which expects the newer larger-sized object then any access to the new
179 fields will result in undefined behaviour. Similarly any access to fields
180 that were moved by the enlarging of the structures will cause undefined
181 behaviour. To fix the undefined behaviour all objects that are part of the
182 final in-memory image must agree on the size of structures, and this may
183 require recompilation.
187 * The following bugs are resolved with this release:
189 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
190 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
191 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
192 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
193 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
194 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
195 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
196 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
197 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
198 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
199 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
200 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
201 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
204 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
205 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
206 Distributions can re-enable building and using pt_chown via the new configure
207 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
208 considerable security risks and should only be used if the distribution
209 understands and accepts the risks.
211 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
214 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
215 fixed (Bugzilla #15330).
217 * Add support for calling C++11 thread_local object destructors on thread
218 and program exit. This needs compiler support for offloading C++11
219 destructor calls to glibc.
221 * Improved worst case performance of libm functions with double inputs and
224 * Support for priority inherited mutexes in pthread condition variables on
225 non-x86 architectures.
227 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
229 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
231 * Optimized string functions for ARM. Implemented by Will Newton and
234 * Optimized libm functions for SPARC. Implemented by David S. Miller.
236 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
239 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
240 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
242 * Added a benchmark framework to track performance of functions in glibc.
244 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
245 It is based on draft TS 18661 and currently enabled as a GNU extension.
247 * On Linux, the clock function now uses the clock_gettime system call
248 for improved precision, rather than old times system call.
250 * Added support for version-3 tz format files. This is needed when using
251 the tz database release 2013e or later, and affects a few unusual cases --
252 currently only TZ='America/Godthab' for time stamps after 2037.
254 * Added new API functions pthread_getattr_default_np and
255 pthread_setattr_default_np to get and set the default pthread
256 attributes of a process.
258 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
259 This may improve lock scaling of existing programs on TSX capable systems.
260 When the --enable-lock-elision=yes parameter is specified at configure
261 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
264 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
265 availability). Implemented by Ryan S. Arnold.
267 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
271 * The following bugs are resolved with this release:
273 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
274 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
275 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
276 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
277 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
278 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
279 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
280 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
281 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
282 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
283 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
284 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
285 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
286 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
287 14879, 14889, 14893, 14898, 14914.
289 * Optimization of memcpy for MIPS.
291 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
292 EMFILE has been fixed (Bugzilla #14889).
294 * The add-on ports collection is now distributed in the "ports" subdirectory
295 of the main GNU C Library distribution, rather than separately.
297 * Port to ARM AArch64 contributed by Linaro.
299 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
300 Optimized versions of memcpy, memset, and memcmp added for System z10 and
302 Implemented by Andreas Krebbel.
304 * The new function secure_getenv allows secure access to the environment,
305 returning NULL if running in a SUID/SGID process. This function replaces
306 the internal function __secure_getenv.
308 * SystemTap static probes have been added into the dynamic linker.
309 Implemented by Gary Benson.
311 * Optimizations of string functions strstr, strcasestr and memmem.
312 Implemented by Maxim Kuvyrkov.
314 * The minimum Linux kernel version that this version of the GNU C Library
315 can be used with is 2.6.16.
317 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
318 powerpc POWER7. Implemented by Will Schmidt.
320 * New configure option --disable-nscd builds the C library such that it
321 never attempts to contact the Name Service Caching Daemon (nscd).
322 New configure option --disable-build-nscd avoids building nscd itself;
323 this is the default if --disable-nscd is used.
325 * Improved support for cross-compilation, including cross-testing and
326 bootstrap builds without a previously built glibc.
328 * Several testsuite tests are now able to test multiple IFUNC variants of an
329 interface, rather than just testing the one that would be chooen by
332 * New configure options --with-bugurl and --with-pkgversion, for
333 distributors to use to embed their bug-reporting and package version
334 information in --help and --version output.
336 * The ttyname and ttyname_r functions on Linux now fall back to searching for
337 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
338 allows creation of chroots without the procfs mounted on /proc.
340 * The `crypt' function now fails if passed salt bytes that violate the
341 specification for those values. On Linux, the `crypt' function will
342 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
343 enabled, and fail on encrypted strings using the MD5 or DES algorithm
344 when the mode is enabled.
346 * The `clock_*' suite of functions (declared in <time.h>) is now available
347 directly in the main C library. Previously it was necessary to link with
348 -lrt to use these functions. This change has the effect that a
349 single-threaded program that uses a function such as `clock_gettime' (and
350 is not linked with -lrt) will no longer implicitly load the pthreads
351 library at runtime and so will not suffer the overheads associated with
352 multi-thread support in other code such as the C++ runtime library.
354 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
359 * The following bugs are resolved with this release:
361 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
362 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
363 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
364 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
365 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
366 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
367 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
368 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
369 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
370 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
371 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
372 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
373 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
374 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
375 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
376 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
377 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
378 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
379 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
380 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
381 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
382 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
385 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
386 configuring glibc with:
387 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
388 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
389 Implemented by H.J. Lu.
393 + define static_assert
395 + do not declare gets
397 + declare at_quick_exit and quick_exit also for ISO C11
399 + aligned_alloc. NB: The code is deliberately allows the size parameter
400 to not be a multiple of the alignment. This is a moronic requirement
401 in the standard but it is only a requirement on the caller, not the
406 + uchar.h support added
408 + CMPLX, CMPLXF, CMPLXL added
410 Implemented by Ulrich Drepper.
412 * Support for the IA-64 has been moved to ports.
414 * Remove support for anything but ELF binary format
416 * Checking versions of poll, ppoll added.
417 Implemented by Ulrich Drepper.
419 * More generic and 64-bit performance optimizations to math functions.
420 Implemented by Ulrich Drepper.
422 * New configure option --enable-obsolete-rpc makes the deprecated RPC
423 headers and functions available at compile time as they were before
424 version 2.14. This option will be removed at some time in the future
425 after the TI-RPC library becomes fully sufficient for the needs of
426 existing applications.
428 * Compatibility code for Linux kernel versions before 2.4 has been removed.
429 Note that glibc is not expected to work with any Linux kernel version
432 * New header <sys/auxv.h> and function getauxval allowing easy access to
433 the AT_* key-value pairs passed from the Linux kernel. The header also
434 defines the HWCAP_* bits associated with the AT_HWCAP key.
436 * New locales: mag_IN
438 * New configure option --enable-systemtap builds SystemTap static probes
439 into libc for setjmp and longjmp and into libpthread for various operations.
440 So far the setjmp/longjmp probes and some of the libpthread probes are
441 provided only for i*86 and x86_64.
442 Implemented by Roland McGrath and Rayson Ho.
444 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
446 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
449 * More optimized functions for SPARC. Implemented by David S. Miller.
451 * Improved support for cross-compilation, especially bootstrap builds
452 without a previously built glibc.
454 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
455 Chris Metcalf from Tilera.
457 * Support for the old ARM ABI has been removed from ports. Only the EABI is
458 now supported for ARM processors.
460 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
461 as the name of the dynamic linker, to distinguish it from the
462 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
464 * Support for CRIS has been removed from ports.
466 * A new class of installed header has been documented for low-level
467 platform-specific functionality. PowerPC added the first instance with a
468 function to provide time base register access. Contributed by Tulio
469 Magno Quites Machado Filho.
471 * ix86 configurations now install header files that are consistent with
472 what x86-64 configurations install. These same header files can be used
473 for -m32, -m64, or -mx32 builds.
474 Contributed by H.J. Lu.
476 * Math library bug fixes. A thorough audit of all open math library bugs was
477 conducted by Joseph Myers. Significant progress was made on many math
478 library bugs resulting in more accurate exceptions and function results.
479 Many thanks to all those that contributed including Andreas Jaeger for his
480 patch review and work on the x87 trigonometric instruction issues.
482 * Timezone data is no longer installed. Timezone-related binaries and scripts
483 will continue to be installed. Users should obtain their timezone data from
484 their distribution provider or from the tzdata package at
485 <ftp://munnari.oz.au/pub/>.
489 * The following bugs are resolved with this release:
491 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
492 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
493 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
494 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
495 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
496 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
497 13484, 13506, 13515, 13523, 13524, 13538, 13540
499 * New program pldd to list loaded object of a process
500 Implemented by Ulrich Drepper.
502 * Add nss_db support back to glibc. No more dependency on Berkeley db
503 and support for initgroups lookups.
504 Implemented by Ulrich Drepper.
506 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
507 Contributed by HJ Lu.
509 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
510 Contributed by HJ Lu.
512 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
513 on x86-32 and x86-64.
514 Contributed by Liubov Dmitrieva.
516 * Optimized strchr and strrchr for SSE on x86-32.
517 Contributed by Liubov Dmitrieva.
519 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
520 for x86-64 and x86-32.
521 Contributed by Liubov Dmitrieva.
523 * New interfaces: scandirat, scandirat64
524 Implemented by Ulrich Drepper.
526 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
527 Implemented by Ulrich Drepper.
529 * nscd now also caches the netgroup database.
530 Implemented by Ulrich Drepper.
532 * Integrate libm with gcc's -ffinite-math-only option.
533 Implemented by Ulrich Drepper.
535 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
536 to math functions. Implemented by Ulrich Drepper.
538 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
539 Implemented by Ulrich Drepper.
541 * New Linux interfaces: process_vm_readv, process_vm_writev
543 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
544 Implemented by Ulrich Drepper.
546 * Optimized nearbyint and strcasecmp for PPC.
547 Implemented by Adhemerval Zanella.
549 * New locales: bho_IN, unm_US, es_CU, ta_LK
553 * The following bugs are resolved with this release:
555 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
556 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
557 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
558 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
559 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
560 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
561 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
562 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
563 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
564 12795, 12811, 12813, 12814, 12841
566 * The RPC implementation in libc is obsoleted. Old programs keep working
567 but new programs cannot be linked with the routines in libc anymore.
568 Programs in need of RPC functionality must be linked against TI-RPC.
569 The TI-RPC implementation is IPv6 enabled and there are other benefits.
571 Visible changes of this change include (obviously) the inability to link
572 programs using RPC functions without referencing the TI-RPC library and the
573 removal of the RPC headers from the glibc headers.
574 Implemented by Ulrich Drepper.
576 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
577 syncfs, setns, sendmmsg
579 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
580 yue_HK, lij_IT, mhr_RU
582 * New encodings: CP770, CP771, CP772, CP773, CP774
584 * New program sotruss to trace calls through PLTs
585 Implemented by Ulrich Drepper.
587 * The malloc hook implementation is marked deprecated and will be removed
588 from the default implementation in the next version. The design never
589 worked ever since the introduction of threads. Even programs which do
590 not create threads themselves can use multiple threads created internally.
594 * The following bugs are resolved with this release:
596 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
597 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
598 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
599 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
602 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
604 * POWER7 optimizations: memset, memcmp, strncmp
606 * New optimized string functions for x86-64: strnlen (SSE2),
607 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
608 Implemented by Ulrich Drepper.
612 * The following bugs are resolved with this release:
614 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
615 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
616 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
617 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
618 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
619 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
620 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
621 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
623 * New interfaces: pthread_getname_np, pthread_setname_np
625 * New Linux interface: recvmmsg
627 * STT_GNU_IFUNC implemented for Sparc by David Miller.
629 * The dynamic linker now recognizes supported ABI versions from the
630 EI_ABIVERSION field in the ELF header.
631 Implemented by Ulrich Drepper.
633 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
634 will not be used to fill in password fields in the passwd.byname replies.
635 Instead it is used to synthesize the shadow.byname table, should it be
636 missing. This is a useful mode in some installations involving Solaris.
637 Implemented by Ulrich Drepper.
639 * New locales: kok_IN, sq_MK, cv_RU
643 * The following bugs are resolved with this release:
645 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
646 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
647 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
648 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
649 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
650 10789, 10817, 10823, 10840, 10847
652 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
654 Implemented by Ulrich Drepper.
656 * Checking version of longjmp added that fails if an uninitialized stack
657 frame would be created. Implemented by Ulrich Drepper.
659 * STT_GNU_IFUNC is now supported in static executables.
660 Implemented by H.J. Lu.
662 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
664 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
665 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
666 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
667 Contributed by H.J. Lu.
669 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
670 Implemented by Ulrich Drepper.
672 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
674 Contributed by H.J. Lu.
676 * Support for fma instruction in AVX on x86-64.
677 Implemented by H.J. Lu and Ulrich Drepper.
679 * AVX support in x86-64 auditing support in ld.so.
680 Implemented by H.J. Lu.
682 * STB_GNU_UNIQUE support added.
683 Implemented by Ulrich Drepper.
685 * Implement second fallback mode for optimized DNS lookup for even more
686 broken environments. If two requests from the same port are not
687 handled correctly close the socket and open a new one before sending
688 the second request. The 'single-request-reopen' option in /etc/resolv.conf
689 can be used to select this mode right away, instead of rediscovering the
690 necessity is every process again.
691 Implemented by Ulrich Drepper.
693 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
694 Implemented by Adam Tkac.
696 * Optimized iconv conversions for S390x.
697 Implemented by Andreas Krebbel.
699 * Using condvars with PI mutexes is now more efficient due to kernel
700 support for requeueing to PI futexes. NPTL support added for x86-64.
701 Implemented by Ulrich Drepper.
703 * New locales: ps_AF, my_MM
707 * The following bugs are resolved with this release:
709 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
710 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
711 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
712 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
713 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
715 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
716 Implemented by Ulrich Drepper.
718 * New Linux interfaces: accept4, fallocate, fallocate64.
719 Implemented by Ulrich Drepper.
721 * Correct declarations of string function when used in C++ code. This
722 could lead to compile errors for invalid C++ code.
724 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
727 * New POSIX 2008 interface: psiginfo
728 Implemented by Ulrich Drepper.
730 * New ISO C++1x interfaces: quick_exit, at_quick_exit
731 Implemented by Ulrich Drepper.
733 * Support for selecting between multiple function definitions at runtime
734 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
736 * The libcrypt library can now use the hash function implementations in
737 NSS. Implemented by Ulrich Drepper.
739 * The malloc implementation can be compiled to be less memory efficient
740 but higher performing in multi-threaded programs.
741 Implemented by Ulrich Drepper.
743 * New locales: nan_TW@latin, ks_IN
745 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
746 Implemented by Ulrich Drepper.
748 * Extended printf hook support. It is possible to use user-defined types
749 and extend existing format specifiers.
750 Implemented by Ulrich Drepper.
752 * Handling for group shadow files has been added.
753 Implemented by Ulrich Drepper.
755 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
756 servers (the case, e.g., for some people using the built-in DNS
757 server in ADSL modems/routers). There is a once-per-process timeout
758 in case of a broken server. To avoid it, users can run nscd or put
759 'options single-request' in /etc/resolv.conf.
760 Implemented by Ulrich Drepper.
764 * The following bugs are resolved with this release:
766 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
767 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
768 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
769 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
770 6968, 6974, 6980, 6995, 7008, 7009, 7029
772 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
773 up at the same time. Implemented by Ulrich Drepper.
775 * TLS descriptors for LD and GD on x86 and x86-64.
776 Implemented by Alexandre Oliva.
778 * getaddrinfo now handles DCCP and UDPlite.
779 Implemented by Ulrich Drepper.
781 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
782 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
783 Implemented by Ulrich Drepper.
785 * New implementation of memmem, strstr, and strcasestr which is O(n).
786 Implemented by Eric Blake.
788 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
790 * Implement "e" option for popen to open file descriptor with the
791 close-on-exec flag set. Implemented by Ulrich Drepper.
793 * Implement "b" mode for fmemopen. In this mode writes writes don't
794 implicitly add a NUL byte and seeks from the end of the buffer really
795 use the buffer end, not the string length as the basis.
796 Implemented by Ulrich Drepper.
798 * Many functions, exported and internal, now atomically set the close-on-exec
799 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
801 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
803 Implemented by Pravin Satpute.
805 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
809 * The following bugs are resolved with this release:
811 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
812 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
813 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
814 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
815 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
816 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
817 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
819 * New locales: bo_CN, bo_IN, shs_CA.
821 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
823 * Sorting rules for some Indian languages (Devanagari and Gujarati).
824 Implemented by Pravin Satpute.
826 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
828 * nscd caches now all timeouts for DNS entries
829 Implemented by Ulrich Drepper.
831 * nscd is more efficient and wakes up less often.
832 Implemented by Ulrich Drepper.
834 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
835 vdprintf, and obstack_vprintf.
836 Implemented by Jakub Jelinek.
838 * Faster memset for x86-64.
839 Implemented by Harsha Jagasia and H.J. Lu.
841 * Faster memcpy on x86.
842 Implemented by Ulrich Drepper.
844 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
845 Implemented by Ulrich Drepper.
847 * Faster sqrt and sqrtf implemention for some PPC variants.
848 Implemented by Steven Munroe.
852 * The following bugs are resolved with this release:
854 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
855 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
856 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
857 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
858 5071, 5103, 5104, 5112, 5113, 5184, 5186
860 * More checking functions: fread, fread_unlocked, open*, mq_open.
861 Implemented by Jakub Jelinek and Ulrich Drepper.
863 * Extend fortification to C++. Implemented by Jakub Jelinek.
865 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
866 by not recognizing 'a' as a modifier when those specs are requested.
867 Implemented by Jakub Jelinek.
869 * PPC optimizations to math and string functions.
870 Implemented by Steven Munroe.
872 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
873 options to be passed. Implemented by Ulrich Drepper.
875 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
877 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
878 Implemented by Ulrich Drepper.
880 * Handle private futexes in the NPTL implementation.
881 Implemented by Jakub Jelinek and Ulrich Drepper.
883 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
884 Implemented by Roland McGrath and Ulrich Drepper.
886 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
888 * SHA-256 and SHA-512 based password encryption.
889 Implemented by Ulrich Drepper.
891 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
892 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
895 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
896 Implemented by Ulrich Drepper.
900 * The following bugs are resolved with this release:
902 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
903 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
904 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
905 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
906 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
907 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
908 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
911 * New Linux interfaces: epoll_pwait, sched_getcpu.
913 * New generic interfaces: strerror_l.
915 * nscd can now cache the services database. Implemented by Ulrich Drepper.
919 * The following bugs are resolved with this release:
921 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
922 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
923 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
924 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
925 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
926 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
927 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
928 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
929 3225, 3251, 3252, 3253, 3273
931 * For Linux, the sorting of addresses returned by getaddrinfo now also
932 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
933 Implemented by Ulrich Drepper.
935 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
936 Implemented by Ulrich Drepper.
938 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
940 * New iconv module for MIK. Contributed by Alexander Shopov.
942 * For sites with broken group and/or passwd database, the auto-propagate
943 option of nscd can prevent creating ID lookup entries from the results
944 of a name lookup and vice versa. This usually is no problem but some
945 site might have problems with the default behavior.
946 Implemented by Ulrich Drepper.
948 * Iterating over entire database in NIS can be slow. With the
949 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
950 to trade time for memory. The entire database will be read at once.
951 Implemented by Ulrich Drepper.
953 * The interfaces introduced in RFC 3542 have been implemented by
956 * Support for the new ELF hash table format was added by Ulrich Drepper.
958 * Support for priority inheritance mutexes added by Jakub Jelinek and
961 * Support for priority protected mutexes added by Jakub Jelinek.
963 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
964 or_IN, csb_PL, fy_NL, sr_ME.
968 * More overflow detection functions.
970 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
971 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
973 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
974 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
975 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
976 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
977 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
978 by Masahide Washizawa.
980 * It is now possible to install audit libraries for the dynamic linker using
981 LD_AUDIT. Implemented by Ulrich Drepper.
983 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
984 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
985 For a libc and libpthread that works well on Linux 2.4 kernels, we
986 recommend using the stable 2.3 branch.
988 * The new function open_wmemstream acts like open_memstream,
989 but uses a wchar_t wide character buffer.
991 * The new function ppoll is an improved version of poll, similar to pselect.
993 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
994 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
995 renameat, unlinkat, linkat, symlinkat, readlinkat.
997 * New Linux kernel system calls: unshare,
998 inotify_init, inotify_add_watch, inotify_rm_watch.
1000 * The euidaccess function is now also known by the alias eaccess,
1001 for compatibility with some other systems.
1003 * Timezone data updated to 2006b version.
1007 * The following bugs are resolved with this release:
1009 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1010 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1011 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1012 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1013 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1014 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1016 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1018 * As of this release, GCC 4 can be used to compile the C Library.
1020 * Timezone data updated to 2005m version.
1024 * The following bugs are resolved with this release:
1026 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1027 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1028 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1029 777, 787, 821, 822, 823, 825
1031 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1035 * Support for RFC 3678. Real implementations exist only for Linux so far.
1036 Implemented by Ulrich Drepper.
1038 * nscd can now cache entries persistently. Expiring entries are reloaded.
1039 For speedups the cache can be shared in memory with client processes.
1040 Implemented by Ulrich Drepper.
1042 * nscd can now perform SELinux checks.
1043 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1045 * getaddrinfo queries are now cached. Canonical name lookup is performed
1047 Implemented by Ulrich Drepper.
1049 * The nothrow function attribute is used when headers are used by gcc when
1050 compiling C code. This can avoid significant amounts of exception
1053 * The malloc functions perform more error checking and are stricter when
1054 it comes to reacting on errors. The default action is to terminate
1055 the process after showing an error message. Implemented by Ulrich Drepper.
1057 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1058 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1060 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1061 namespaces using the new function dlmopen(). This feature is of course,
1062 like most other dynamic loading functionality, not available in statically
1063 linked applications. Implemented by Ulrich Drepper.
1065 * Low-overhead boundary checking variants of string and some stdio functions
1066 were added. These are to be used in conjunction with a gcc patch by
1067 Jakub Jelinek which adds calls to these functions if possible.
1068 Implemented by Jakub Jelinek and Ulrich Drepper.
1070 * Old code for several operating systems and machine architectures that
1071 have not been in working condition in a long time have been removed from
1072 the main source tree maintained by the GNU C Library's maintainers.
1073 These files are now reside in the separate `ports' source module
1074 that is usable as an add-on when building the library.
1078 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1079 interrogate the dynamic linker, compatible with the Solaris interface.
1081 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1082 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1084 * getifaddrs now uses the netlink interface on Linux to get its information.
1085 Implemented by Thorsten Kukuk.
1087 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1088 Implemented by Ulrich Drepper.
1090 * support for non-executable stacks on x86 has been added. Changes mostly
1093 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1096 * getaddrinfo now performs destination address selection according to
1101 * Thread-safe interfaces for many functions that access locale data
1102 were added in version 2.3, but these features were omitted from NEWS.
1103 Many functions have variants with an `_l' suffix that take a `locale_t'
1104 object as a parameter rather than consulting the current locale.
1105 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1106 create and maintain `locale_t' objects. Additionally, the new function
1107 `uselocale' sets "the current locale" (as used by functions not so
1108 parameterized) set for an individual thread. These features were added
1109 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1111 * The functions getresuid, getresgid, setresuid, and setresgid, which
1112 have long been available on Linux, are now declared in <unistd.h>
1113 and are now also available on the Hurd.
1115 * ELF thread-local storage support (TLS) now works on x86-64.
1117 * The new dynamic string token $LIB is expanded in shared library names.
1118 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1120 * Aldy Hernandez contributed complete software floating point support for
1121 PowerPC machines with no FPU.
1123 * fexecve is implemented on Linux.
1125 * The `btowc' function should work at least twice as fast due to
1126 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1128 * With approriate thread add-ons cancelable functions are now implemented
1129 in libc.so as well. No need to call the function in libpthread. This
1130 change allowed to finally disable the incorrect and expensive handling
1131 of weak definition in ld.so.
1133 * Yet more PLT entries in libc.so have been removed. We finally arrived
1134 at the bare minimum. Startup times improved appropriately.
1136 * Support for the new Linux/x86 system call interface was added. The
1137 AT_SYSINFO auxiliary vector entry is recognized and handled.
1141 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1144 * iconv (the program and the interface) now accepts empty names (excluding
1145 options like //TRANSLIT) to mean "use charset of current locale".
1147 * localedef can now transliterate characters in strings which are not in
1148 the provided charmap. The information from the input locale is used.
1150 * Prelinking support was added for ELF targets. This requires additional
1151 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1153 * Read-only stdio streams now use mmap to speed up operation by eliminating
1154 copying and buffer underflows. To use add 'm' to the mode string of
1155 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1157 * The malloc functions were completely rewritten by Wolfram Gloger based
1158 on Doug Lea's malloc-2.7.0.c.
1160 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1161 implementation of regex.
1163 * Bruno Haible upgraded the iconv and locale implementation to support
1166 * Contents of the LC_* and LANG environment variables in the CEN style are
1167 not recognized anymore. It never was used. Change by Ulrich Drepper.
1169 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1170 thread-local storage (TLS) ABI on some platforms.
1171 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1173 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1174 EUC-JISX0213, and TSCII.
1176 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1177 BSD-compatible interface for getting all network interface addresses.
1178 Implementation for IPv4 by Roland McGrath.
1180 * Loading of locale data is faster due to the introduction of a locale
1181 archive. Implemented by Roland McGrath and Ulrich Drepper.
1183 * Startup times are significantly reduced by not using exported functions
1184 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1187 * Steven Munroe contributed a port to PowerPC64/Linux.
1191 * The Hurd now uses the GNU libio implementation of stdio rather than the
1192 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1194 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1195 with the same behavior as the Linux system call of the same name.
1199 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1200 128-bit long double format.
1202 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1203 IBM1161, and IBM1162 charsets.
1205 * Andreas Jaeger contributed a port to x86-64/Linux.
1207 * Peter Bruin contributed a port to PowerPC/Hurd.
1209 * libc functions using I/O streams now can handle wide-oriented streams
1212 * optimizations in the dynamic linker. Binaries created by recent binutils
1213 versions start up quicker due to reduced time spent on relocations.
1215 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1219 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1220 asinh, atanh, j0 for the 128-bit long double format.
1222 * Bruno Haible updated all the code handling Unicode in some form to
1223 support Unicode 3.1.
1225 * Speed of regex for single-byte locales is back to previous levels.
1226 Patch by Isamu Hasegawa.
1228 * Alpha, SPARC, and IA-64 now also using floating stacks.
1230 * Startup time of internationalized applications greatly improved through
1231 iconv cache. Use iconvconfig to generate the cache file.
1232 Contributed by Ulrich Drepper.
1234 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1235 severe performance problems. Patch by David Mosberger.
1237 * The Hurd port got a lot more functionality like AIO, various stdio
1238 extensions, etc. Mainly done by Roland McGrath.
1240 * mtrace can now lookup symbols in shared libraries.
1244 * Intel's IA-64 math library is largely integrated. It provides fast and
1245 accurate implementatations for most basic and standard math functions
1246 in float, double, and long double format.
1248 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1249 and asin for the 96-bit long double format and asin, log, tan for the
1250 128-bit long double format.
1252 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1253 The basic double functions exist today. Contributed by Abraham Ziv
1254 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1255 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1257 * An asynchronous name lookup library was added. The interface is designed
1258 after POSIX AIO. The proposal was circulated beforehand to get comments.
1259 No negative ones came in. Implemented by Ulrich Drepper.
1261 * Port to S390/64bit contributed by Martin Schwidefsky
1262 <schwidefsky@de.ibm.com>.
1264 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1265 of functions for Linux/IA-64.
1267 * The RPC code is now thread safe. Threads can now use the same service
1268 of different services at the same time. Patch by Eric Norum
1269 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1271 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1272 family of functions for Linux/S390.
1274 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1275 of functions for Linux/x86.
1277 * Port to Linux/CRIS contributed by Axis Communications.
1281 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1282 we can now check for namespace violations and missing declarations. The
1283 result is that almost all headers are now Unix-compliant (as defined in
1284 the upcoming XPG6). The negative side is that some programs might need
1285 corrections, too, if they depend on the incorrect form of the headers in
1286 previous versions which defined too many symbols and included too many
1289 * regex now handles multibyte character sets correctly.
1290 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1292 * iconv (the program) does now conform to the upcoming XPG6 and handles
1293 charmaps. Instead of the charset names the path of charmaps can be
1294 provided and the conversion happens based on this data.
1295 Contributed by Ulrich Drepper.
1297 * The locale program now provides detailed information about the installed
1302 only lists the names of the supported locales
1306 provides details such as country, language, and codeset name.
1307 Contributed by Ulrich Drepper.
1311 * The gencat program now parses the input file according to the charset
1312 selected by the LC_CTYPE category. This is important for stateful
1313 character sets. To make generating catalogs easier there is a way
1314 to overwrite the charset selected by the locale: before the first
1315 message or $ quote line the catalog can contain a line like
1317 $ codeset=ISO-8859-2
1319 to select the charset (ISO-8859-2 in this case).
1321 Implemented by Shinya Hanataka and Ulrich Drepper.
1323 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1324 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1325 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1327 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1328 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1330 * The LANGUAGE environment variable is now ignored unless the locale is
1331 changed from the default "C" locale.
1333 * The usual bug fixes.
1337 * Greg McGary added runtime support for bounds checking using gcc's
1338 new -fbounded-pointers option. ix86 target is complete. PowerPC
1341 * Thorsten Kukuk added secure mode support to nscd.
1343 * The Berkeley db libraries have been removed.
1345 Related, the nss_db module is now in a separate package since it
1346 obviously requires a database library being available.
1348 * Wide character I/O streams implemented by Ulrich Drepper.
1350 * Functions from the extended socket API added by Ulrich Drepper.
1352 * Functions feenableexcept and fedisableexcept to control the
1353 behaviour of individual exceptions have been added by Andreas Jaeger.
1355 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1357 * The resolver code has been updated from bind 8.2.3-T5B which supports
1358 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1361 This change could in some situations effect backward compatibility. Since
1362 now `_res' is a thread-local instead of a global variable, modifying it
1363 in one thread does not have any effect in other threads.
1365 The resolver library was also extended to allow IPv6 as the transport
1366 protocol for the requests. This work was done by Stig Venaas.
1368 * Compatibility code for K&R C compilers has been removed from the
1369 header files. A ISO C compiler is needed to use the library
1370 (conforming to either C89 or C99 standard).
1372 * Complete rewrite of the localedef program to support multibyte character
1373 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1374 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1375 Implemented by Ulrich Drepper.
1377 Bruno Haible significantly improved the generation and use of the data
1378 structures for the wide character tables.
1380 * Plural handling in gettext implemented by Ulrich Drepper.
1382 * The utmp daemon has been removed.
1384 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1386 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1389 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1391 * POSIX barriers implemented by Kaz Kylheku.
1393 * POSIX spawn function family implemented by Ulrich Drepper.
1395 * POSIX spinlocks are now available.
1397 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1399 * the configure option --enable-kernel=X.Y.Z allows to strip out
1400 compatibility for kernel versions before X.Y.Z. This is currently only
1401 implemented for Linux.
1403 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1404 field sin6_scope_id. This means that all programs using IPv6 should be
1405 recompiled. Don't expect binary compatibility with previous glibc
1408 * various conversion modules for IBM character sets contributed by
1411 * IA-64 port by Jes Sorensen and HJ Lu.
1425 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1427 * New xdr functions are added; some rpc functions are now 64bit clean.
1429 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1431 * Fixed known incompatibilities with glibc 2.0.
1433 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1435 * Optimized a number of functions (especially the ELF dynamic loader).
1437 * Update timezone data files.
1439 * lots of charmaps corrections
1441 * some new locale definitions and charmaps
1446 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1447 conform to POSIX member type requirements. Symbol versions have been
1448 adjusted as needed within the library, and for direct use by applications,
1449 but there is potential for problems if third-party libraries use
1450 struct timeval as part of their interface. This does not present
1451 a problem for X and other "essential" system libraries.
1453 * An additional locale model to support C++ Standard Library locale
1454 model and probably more was implemented by Ulrich Drepper.
1456 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1459 * Miles Bader provided the `argp' function family to support hierachical
1460 command line argument parsing, layered on top of getopt.
1462 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1464 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1467 * scanf recognizes the %a and %A format for scanning floating point numbers.
1469 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1470 information and interfaces for the available integer types.
1472 * about 130 new math functions were added to implement the ISO C9x math
1475 * the new header <complex.h> contains definitions of the complex math
1476 functions from ISO C 9X.
1478 * the new header <tgmath.h> defines generic macros to use complex or
1479 real valued functions.
1481 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1483 * Andreas Jaeger provided a test suite for the math library.
1485 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1487 * Ulrich Drepper added character set conversion functions (iconv).
1489 * Optimized string functions have been added.
1491 * The localedata addon is now part of glibc.
1493 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1495 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1496 daemon for NSS (nscd).
1498 Missing a better place here are some numbers on improvements. Under
1499 Linux 2.1.125 un-tar-ing the kernel sources takes
1503 using local files 12.19s 6.88s 22.91s
1505 using NIS 13.92s 8.91s 26.34s
1507 using NIS & nscd 10.37s 7.34s 25.30s
1509 using NIS+ 27.57s 30.37s 640.46s
1511 using NIS+ & nscd 10.25s 7.83s 26.51s
1513 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1515 Keep in mind that non-namelookup related operations dominate above times.
1516 It was just a common complain that using NIS+ unpacking the kernel is
1519 [1] The old nscd implementation is not available anymore since it was
1520 distributed with glibc up to version 2.0.98 and thus is now replaced.
1522 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1524 * Mark Kettenis provided a Hesiod NSS module.
1526 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1527 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1529 * rcmd can now handle netgroups (Dick Streefland).
1531 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1534 * Support for the IPv6 protocol has been added to the socket API, as per the
1535 latest draft standards.
1537 * Support for Linux 2.2 has been added.
1539 * Interface changes relative to the latest 2.0.x release:
1540 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1541 addseverity NEW: Unix98
1542 alphasort64 NEW: LFS
1543 argp_err_exit_status NEW: argp, GNU ext
1544 argp_error NEW: argp, GNU ext
1545 argp_failure NEW: argp, GNU ext
1546 argp_help NEW: argp, GNU ext
1547 argp_parse NEW: argp, GNU ext
1548 argp_program_bug_address NEW: argp, GNU ext
1549 argp_program_version NEW: argp, GNU ext
1550 argp_program_version_hook NEW: argp, GNU ext
1551 argp_state_help NEW: argp, GNU ext
1552 argp_usage NEW: argp, GNU ext
1553 authdes_create NEW: Secure RPC
1554 authdes_getucred NEW: Secure RPC
1555 authdes_pk_create NEW: Secure RPC
1556 backtrace NEW: GNU ext.
1557 backtrace_symbols NEW: GNU ext.
1558 backtrace_symbols_fd NEW: GNU ext.
1560 cacosf NEW: ISO C 9x
1561 cacosh NEW: ISO C 9x
1562 cacoshf NEW: ISO C 9x
1563 cacoshl NEW: ISO C 9x
1564 cacosl NEW: ISO C 9x
1571 casinf NEW: ISO C 9x
1572 casinh NEW: ISO C 9x
1573 casinhf NEW: ISO C 9x
1574 casinhl NEW: ISO C 9x
1575 casinl NEW: ISO C 9x
1577 catanf NEW: ISO C 9x
1578 catanh NEW: ISO C 9x
1579 catanhf NEW: ISO C 9x
1580 catanhl NEW: ISO C 9x
1581 catanl NEW: ISO C 9x
1582 cbc_crypt NEW: Secure RPC
1586 ccoshf NEW: ISO C 9x
1587 ccoshl NEW: ISO C 9x
1593 cimagf NEW: ISO C 9x
1594 cimagl NEW: ISO C 9x
1595 clearerr_locked REMOVED
1596 clntunix_create NEW: sunrpc ext
1598 clog10 NEW: ISO C 9x
1599 clog10f NEW: ISO C 9x
1600 clog10l NEW: ISO C 9x
1610 cprojf NEW: ISO C 9x
1611 cprojl NEW: ISO C 9x
1613 crealf NEW: ISO C 9x
1614 creall NEW: ISO C 9x
1619 csinhf NEW: ISO C 9x
1620 csinhl NEW: ISO C 9x
1623 csqrtf NEW: ISO C 9x
1624 csqrtl NEW: ISO C 9x
1628 ctanhf NEW: ISO C 9x
1629 ctanhl NEW: ISO C 9x
1631 des_setparity NEW: Secure RPC
1632 ecb_crypt NEW: Secure RPC
1633 endutxent NEW: Unix98
1635 exp10f NEW: ISO C 9x
1636 exp10l NEW: ISO C 9x
1640 fattach NEW: STREAMS
1641 fdetach NEW: STREAMS
1645 feclearexcept NEW: ISO C 9x
1646 fegetenv NEW: ISO C 9x
1647 fegetexceptflag NEW: ISO C 9x
1648 fegetround NEW: ISO C 9x
1649 feholdexcept NEW: ISO C 9x
1651 feraiseexcept NEW: ISO C 9x
1652 ferror_locked REMOVED
1653 fesetenv NEW: ISO C 9x
1654 fesetexceptflag NEW: ISO C 9x
1655 fesetround NEW: ISO C 9x
1656 fetestexcept NEW: ISO C 9x
1657 feupdateenv NEW: ISO C 9x
1658 fflush_locked REMOVED
1662 fgets_unlocked NEW: GNU ext.
1663 fileno_locked REMOVED
1675 fputc_locked REMOVED
1676 fputs_unlocked NEW: GNU ext.
1677 fread_unlocked NEW: GNU ext.
1682 fstatvfs NEW: Unix98
1686 ftruncate64 NEW: LFS
1688 fwrite_unlocked NEW: GNU ext.
1689 gai_strerror NEW: IPv6
1693 getchar_locked REMOVED
1695 getdate_err NEW: Unix98
1696 getdate_r NEW: GNU ext.
1698 getnameinfo NEW: IPv6
1699 getnetname NEW: Secure RPC
1700 getpmsg NEW: STREAMS
1701 getpt NEW: Unix98 PTY
1702 getrlimit64 NEW: LFS
1703 getutxent NEW: Unix98
1704 getutxid NEW: Unix98
1705 getutxline NEW: Unix98
1706 glob64 NEW: GNU ext.
1707 globfree64 NEW: GNU ext.
1708 gnu_get_libc_release NEW: GNU ext.
1709 gnu_get_libc_version NEW: GNU ext.
1710 grantpt NEW: Unix98 PTY
1711 host2netname NEW: Secure RPC
1713 iconv_close NEW: iconv
1714 iconv_open NEW: iconv
1715 if_freenameindex NEW: IPv6
1716 if_indextoname NEW: IPv6
1717 if_nameindex NEW: IPv6
1718 if_nametoindex NEW: IPv6
1719 in6addr_any NEW: IPv6
1720 in6addr_loopback NEW: IPv6
1721 inet6_isipv4mapped NEW: IPv6
1722 isastream NEW: STREAMS
1723 iswblank NEW: GNU ext.
1724 key_decryptsession NEW: Secure RPC
1725 key_decryptsession_pk NEW: Secure RPC
1726 key_encryptsession NEW: Secure RPC
1727 key_encryptsession_pk NEW: Secure RPC
1728 key_gendes NEW: Secure RPC
1729 key_get_conv NEW: Secure RPC
1730 key_secretkey_is_set NEW: Secure RPC
1731 key_setnet NEW: Secure RPC
1732 key_setsecret NEW: Secure RPC
1733 llrint NEW: ISO C 9x
1734 llrintf NEW: ISO C 9x
1735 llrintl NEW: ISO C 9x
1736 llround NEW: ISO C 9x
1737 llroundf NEW: ISO C 9x
1738 llroundl NEW: ISO C 9x
1743 lrintf NEW: ISO C 9x
1744 lrintl NEW: ISO C 9x
1745 lround NEW: ISO C 9x
1746 lroundf NEW: ISO C 9x
1747 lroundl NEW: ISO C 9x
1749 makecontext NEW: Unix98
1750 mempcpy NEW: GNU ext.
1753 modify_ldt NEW: kernel
1757 nearbyint NEW: ISO C 9x
1758 nearbyintf NEW: ISO C 9x
1759 nearbyintl NEW: ISO C 9x
1760 netname2host NEW: Secure RPC
1761 netname2user NEW: Secure RPC
1762 nexttoward NEW: ISO C 9x
1763 nexttowardf NEW: ISO C 9x
1764 nexttowardl NEW: ISO C 9x
1768 passwd2des NEW: Secure RPC
1770 pow10f NEW: GNU ext.
1771 pow10l NEW: GNU ext.
1774 printf_size NEW: GNU ext.
1775 printf_size_info NEW: GNU ext.
1776 profil_counter REMOVED
1777 pthread_mutexattr_getkind_np REPLACED
1778 pthread_mutexattr_setkind_np REPLACED
1779 ptsname NEW: Unix98 PTY
1780 ptsname_r NEW: Unix98 PTY
1782 putchar_locked REMOVED
1783 putgrent NEW: GNU ext.
1785 putpmsg NEW: STREAMS
1786 pututxline NEW: Unix98
1790 readdir64_r NEW: LFS
1791 remquo NEW: ISO C 9x
1792 remquof NEW: ISO C 9x
1793 remquol NEW: ISO C 9x
1795 roundf NEW: ISO C 9x
1796 roundl NEW: ISO C 9x
1798 scalbln NEW: ISO C 9x
1799 scalblnf NEW: ISO C 9x
1800 scalblnl NEW: ISO C 9x
1802 sendfile NEW: kernel
1803 setcontext NEW: Unix98
1804 setrlimit64 NEW: LFS
1805 setutxent NEW: Unix98
1807 sigignore NEW: Unix98
1808 sigqueue NEW: POSIX.1b
1809 sigrelse NEW: Unix98
1810 sigset NEW: POSIX.1b
1811 sigtimedwait NEW: POSIX.1b
1812 sigwaitinfo NEW: POSIX.1b
1813 sincos NEW: GNU ext.
1814 sincosf NEW: GNU ext.
1815 sincosl NEW: GNU ext.
1819 strcasestr NEW: GNU ext.
1820 strtoimax NEW: ISO C 9x
1821 strtoumax NEW: ISO C 9x
1822 strverscmp NEW: GNU ext.
1823 svcauthdes_stats NEW: Secure RPC
1824 svcunix_create NEW: sunrpc etx
1825 svcunixfd_create NEW: sunrpc ext
1826 swapcontext NEW: Unix98
1827 tcgetsid NEW: Unix98 PTY
1828 tdestroy NEW: GNU ext.
1829 tgamma NEW: ISO C 9x
1830 tgammaf NEW: ISO C 9x
1831 tgammal NEW: ISO C 9x
1835 truncf NEW: ISO C 9x
1836 truncl NEW: ISO C 9x
1838 unlockpt NEW: Unix98 PTY
1839 updwtmpx NEW: Unix98
1840 user2netname NEW: Secure RPC
1841 utmpxname NEW: Unix98
1842 versionsort NEW: GNU ext.
1843 versionsort64 NEW: GNU ext.
1845 wcscasecmp NEW: GNU ext.
1846 wcsncasecmp NEW: GNU ext.
1847 wcsnlen NEW: GNU ext.
1848 wcstoimax NEW: ISO C 9x
1849 wcstoll NEW: ISO C 9x
1850 wcstoull NEW: ISO C 9x
1851 wcstoumax NEW: ISO C 9x
1853 wordexp NEW: POSIX.2
1854 wordfree NEW: POSIX.2
1855 write_profiling REMOVED
1856 xdecrypt NEW: Secure RPC
1857 xdr_authdes_cred NEW: Secure RPC
1858 xdr_authdes_verf NEW: Secure RPC
1859 xdr_cryptkeyarg NEW: Secure RPC
1860 xdr_cryptkeyarg2 NEW: Secure RPC
1861 xdr_cryptkeyres NEW: Secure RPC
1862 xdr_getcredres NEW: Secure RPC
1863 xdr_key_netstarg NEW: Secure RPC
1864 xdr_key_netstres NEW: Secure RPC
1865 xdr_keybuf NEW: Secure RPC
1866 xdr_keystatus NEW: Secure RPC
1867 xdr_netnamestr NEW: Secure RPC
1868 xdr_sizeof NEW: Secure RPC
1869 xdr_unixcred NEW: sunrpc ext
1870 xencrypt NEW: Secure RPC
1871 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1882 * inet_ntoa is thread-safe
1884 * updwtmp is moved from libutil to libc
1886 * rewrite of cbrt function
1888 * update of timezone data
1902 * add atoll function
1904 * fix complex problems in Berkeley DB code
1906 * fix math functions
1910 * fixed lots of header problems (especially Linux/GNU specific)
1912 * dynamic loader preserves all registers
1914 * Roland McGrath provided support for handling of auxiliary objects in
1915 the ELF dynamic loader.
1917 * support for parallel builds is improved
1921 * GNU extensions are no longer declared by default. To enable them you
1922 must define the macro `_GNU_SOURCE' in your program or compile with
1925 * The library has changed from using GNU ld symbol aliases to using weak
1926 symbols where available. The ELF object file format supports weak
1927 symbols; GNU ld also supports weak symbols in the a.out format. (There
1928 is also now support for other GNU ld extensions in ELF. Use the
1929 `--with-elf' option to configure to indicate you have ELF, and
1930 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1931 of many files which contained only symbol aliases, reducing the size of
1932 the source and the compiled library; many other files were renamed to
1933 less cryptic names previously occupied by the symbol alias files.
1934 There is a new header file <elf.h> for programs which operate on
1935 files in the ELF format.
1937 * Converted to Autoconf version 2, so `configure' has more options.
1938 Run `configure --help' to see the details.
1940 * The library can now be configured to build profiling, highly-optimized
1941 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1942 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1943 `configure' enable building these extra libraries. The shared library is
1944 built by default when using both ELF and GNU ld. When shared libraries
1945 are enabled, the new library `-ldl' is available for arbitrary run-time
1946 loading of shared objects; its interface is defined in <dlfcn.h>. The
1947 new header file <link.h> gives access to the internals of the run-time
1948 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1949 application of same name on other systems and it provides information
1950 about dynamically linked binaries.
1952 * The C library now provides the run-time support code for profiling
1953 executables compiled with `-pg'. Programs can control the profiling code
1954 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1955 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1956 the support for this file format was contributed by David Mosberger-Tang.
1958 * The math code has been replaced with a math library based on fdlibm from
1959 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1960 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1961 functions. The math functions now reside in a separate library, so
1962 programs using them will need to use `-lm' their linking commands.
1964 * John C. Bowman contributed optimized ix87 assembler inline functions.
1966 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1967 mechanism similar to that found in Solaris 2. This is now used for the
1968 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1969 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1970 file controls what services are used for each individual database. This
1971 works by loading shared libraries with names specified in `nsswitch.conf',
1972 so service modules can be changed or added at any time without even
1973 relinking any program. Currently there are the file, db, and NIS based
1974 NSS services available.
1976 * The new functions `strtoq' and `strtouq' parse integer values from
1977 strings, like `strtol' and `strtoul', but they return `long long int' and
1978 `unsigned long long int' values, respectively (64-bit quantities).
1980 * The new functions `strtof' and `strtold' parse floating-point values from
1981 strings, like `strtod', but they return `float' and `long double' values,
1982 respectively (on some machines `double' and `long double' are the same).
1984 * Ulrich Drepper has contributed new implementations of the floating-point
1985 printing and reading code used in the `printf' family of functions and
1986 `strtod', `strtof', and `strtold'. These new functions are perfectly
1987 accurate, and much faster than the old ones.
1989 * The implementation of the POSIX locale model was completely rewritten by
1990 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1991 to compile the POSIX locale definition.
1993 * The former dummy implementations of the strcoll and strxfrm function are
1994 now replaced by fully functional code contributed by Ulrich Drepper. The
1995 collation information comes from the POSIX locale definitions.
1997 * The new header <langinfo.h> defines an interface for accessing
1998 various locale-dependent data (using the locale chosen with `setlocale').
2000 * Ulrich Drepper has contributed a new suite of functions for operation on
2001 wide-character and multibyte-character strings, in <wchar.h>;
2002 and classification and case conversion of wide characters, in <wctype.h>.
2003 These new functions are conforming to the ISO C, Amendement 1 specification.
2005 * There is now a second implementation of the standard I/O library available.
2006 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2007 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2009 * You can now use positional parameter specifications in format strings
2010 for the `printf' and `scanf' families of functions. For example,
2011 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2012 ``Number 6, Mr Jones''. This is mainly useful when providing different
2013 format strings for different languages, whose grammars may dictate
2014 different orderings of the values being printed. To support this
2015 feature, the interface for `register_printf_handler' has changed; see
2016 the header file <printf.h> for details.
2018 * The `printf' and `scanf' families of functions now understand a new
2019 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2020 to group numbers as indicated by the locale; for `scanf' and friends, this
2021 says to accept as valid only a number with all the proper grouping
2022 separators in the right places. In the default "C" locale, numbers are
2023 not grouped; but locales for specific countries will define the usual
2024 conventions (i.e. separate thousands with `,' in the US locale).
2026 * The pgrp functions have been regularized, slightly incompatibly but much
2027 less confusingly. The core functions are now `getpgid' and `setpgid',
2028 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2029 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2030 provided for compatibility. There is no longer an incompatible `getpgrp'
2031 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2033 * The new header file <fts.h> and suite of functions simplify programs that
2034 operate on directory trees. This code comes from 4.4 BSD.
2036 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2037 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2038 NSS scheme used in glibc.
2040 * There is a new malloc debugging hook `__memalign_hook'.
2042 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2043 `unsigned int' in <sys/types.h>. These are for compatibility only and
2044 their use is discouraged.
2046 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2047 done differently, so that it works even without GNU ld.
2049 * New function `euidaccess' checks allowed access to a file like `access',
2050 but using the effective IDs instead of the real IDs.
2052 * The time zone data files have been updated for the latest and greatest
2053 local time conventions of the countries of the world.
2055 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2058 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2059 for formatting floating-point numbers. They are provided only for
2060 compatibility; new programs should use `sprintf' instead. There are
2061 also equivalent function for the `long double' floating-point type and
2062 all functions also exist in a reentrant form.
2064 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2065 functions for maintaining the login-record files (primarily of use to
2066 system programs such as `login'), and convenient functions for
2067 allocating and initializing a pseudo-terminal (pty) device.
2069 * Ulrich Drepper has contributed new support for System V style
2070 shared memory and IPC on systems that support it.
2072 * Ulrich Drepper has contributed several miscellaneous new functions found
2073 in System V: The `hsearch' family of functions provide an effective
2074 implementation of hash tables; `a64l' and `l64a' provide a very simple
2075 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2078 * Ulrich Drepper has contributed new reentrant counterparts for the
2079 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2081 * Ulrich Drepper has contributed new, highly-optimized versions of several
2082 string functions for the i486/Pentium family of processors.
2084 * Ulrich Drepper has updated the Linux-specific code, based largely
2085 on work done in Hongjiu Lu's version of GNU libc for Linux.
2086 The GNU library now supports Linux versions 2.0.10 and later,
2087 using the ELF object file format (i[3456]86-*-linux).
2089 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2091 * David Mosberger-Tang and Richard Henderson have ported the C library
2092 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2093 dynamic linking support for ELF/Alpha.
2095 * Richard Henderson contributed several Alpha optimized assembler function
2096 for arithmetic and string handling.
2098 * Ulrich Drepper has contributed a new set of message catalog functions to
2099 support multiple languages using the <libintl.h> interface, for use with
2100 his new package GNU gettext. Translation volunteers have contributed
2101 catalogs of the library's messages in Spanish, German, and Korean.
2103 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2104 program and the `catgets' function for reading the catalog files it
2105 creates. (The <libintl.h> interface is preferred; we include the
2106 <nl_types.h> interface using `catgets' only for source compatibility with
2107 programs already written to use it.)
2109 * New header file <values.h> gives SVID-compatible names for <limits.h>
2112 * Various new macros, declarations, and small header files for compatibility
2115 * New function `group_member' is a convenient way to check if a process has
2116 a given effective group ID.
2118 * When using GCC 2.7 and later, the socket functions are now declared in a
2119 special way so that passing an argument of type `struct sockaddr_in *',
2120 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2121 `struct sockaddr *' type, does not generate a type-clash warning.
2123 * New function `error' declared in header file <error.h> is a convenient
2124 function for printing error messages and optionally exiting; this is the
2125 canonical function used in GNU programs. The new functions `err', `warn',
2126 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2127 doing the same thing.
2129 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2130 POSIX.2 `glob' function to do ~ and {...} expansion.
2132 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2133 `clearenv' which is used in POSIX.9 is also available.
2135 * New function `getsid' returns session ID number on systems that support it.
2137 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2138 files <db.h> and <mpool.h> provide a rich set of functions for several
2139 types of simple databases stored in memory and in files, and <ndbm.h> is
2140 an old `ndbm'-compatible interface using the `db' functions. Link with
2141 `-ldb' to get these functions.
2143 * New macro `strdupa' copies a string like `strdup', but uses local stack
2144 space from `alloca' instead of dynamic heap space from `malloc'.
2146 * New function `strnlen' is like `strlen' but searches only a given maximum
2147 number of characters for the null terminator. `stpncpy', `strndup' and
2148 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2151 * New function `statfs' in header <sys/statfs.h>.
2153 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2154 provide convenient functions for operating on blocks of null-terminated
2157 * A new suite of functions in <utmp.h> handle all the details of reading
2158 and writing the utmp file.
2160 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2163 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2164 completely POSIX compliant and also implemented the extended functionality
2165 to handle alternate digit representation and alternate era date formats.
2167 * Ulrich Drepper provided an implementation of the `strptime' function
2168 defined in XPG4.2 which transforms a string into a `struct tm' value.
2170 * Paul Eggert provided the tzselect shell script as part of the timezone
2171 code. The shell script makes it easy to select the correct timezone
2174 * The implementation of the malloc family of functions is completely replaced
2175 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2176 The implementation uses the mmap function (if available) and it is
2177 optimized for the use in multi threaded programs.
2179 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2180 functions. This new functionality is usable by specifying a special
2181 salt string and it is compatible with implementation on *BSD systems.
2183 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2184 `getsubopt' to handle second level command line options, `bsd_signal'
2185 to access BSD style `signal' functionality, the obsolete `regexp' style
2188 * the `lchown' function is available on system which support this
2191 * The implementation of the shadow password handling function was contributed
2194 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2196 * POSIX.1g support was added. The <sys/select.h> header is available,
2197 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2198 implementation of `getaddrinfo'.
2202 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2204 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2205 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2207 * The new function `daemon' from 4.4 BSD is useful for server programs that
2208 want to put themselves in the background.
2210 * Joel Sherrill has contributed support for several standalone boards that
2211 run without an operating system.
2213 * `printf', `scanf' and friends now accept a `q' type modifier for long
2214 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2216 * All of the code taken from BSD (notably most of the math and networking
2217 routines) has been updated from the BSD 4.4-Lite release.
2219 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2221 * The new functions `getdomainname' and `setdomainname' fetch or change the
2222 YP/NIS domain name. These are system calls which exist on systems which
2225 * The time zone data files have been updated for the latest international
2228 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2229 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2233 * The C library now includes support for Sun RPC, from Sun's free
2234 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2235 are included. (There is still no support for YP.)
2237 * Tom Quinn has contributed a port of the C library to SGI machines running
2238 Irix 4 (mips-sgi-irix4).
2240 * The new `lockf' function is a simplified interface to the locking
2241 facilities of `fcntl', included for compatibility.
2243 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2245 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2247 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2250 * The error message printed by `assert' for a failed assertion now includes
2251 the name of the program (if using GNU ld) and the name of the calling
2252 function (with versions of GCC that support this).
2254 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2256 * The library now includes the <sys/mman.h> header file and memory
2257 management functions `mmap', `munmap', `mprotect', `msync', and
2258 `madvise', on systems that support those facilities.
2260 * The interface for `mcheck' has changed slightly: the function called to
2261 abort the program when an allocation inconsistency is detected now takes
2262 an argument that indicates the type of failure. The new function
2263 `mprobe' lets you request a consistency check for a particular block at
2264 any time (checks are normally done only when you call `free' or `realloc'
2267 * It is now possible to easily cross-compile the C library, building on one
2268 system a library to run on another machine and/or operating system. All
2269 you need to do is set the variable `HOST_CC' in `configparms' to the
2270 native compiler for programs to run on the machine you are building on (a
2271 few generator programs are used on Unix systems); set `CC' to the
2274 * The new function `fexecve' (only implemented on the GNU system) executes
2275 a program file given a file descriptor already open on the file.
2279 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2280 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2282 * You can set the variable `libprefix' in `configparms' to specify a prefix
2283 to be prepended to installed library files; this makes it easy to install
2284 the GNU C library to be linked as `-lgnuc' or whatever.
2286 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2287 copies a limited number of characters from a string, and returns the
2288 address of the last character written.
2290 * You no longer need to check for whether the installed `stddef.h' is
2291 compatible with the GNU C library. configure now checks for you.
2293 * You can now define a per-stream `fileno' function to convert the
2294 stream's cookie into an integral file descriptor.
2296 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2297 allocates zero bytes of storage, and returns a unique pointer which
2298 you can pass to `realloc' or `free'. The behavior is undefined if
2299 you dereference this pointer.
2301 * The C library now runs on Sony NEWS m68k machines running either
2302 NewsOS 3 or NewsOS 4.
2304 * The new `syscall' function is a system-dependent primitive function
2305 for invoking system calls. It has the canonical behavior on Unix
2306 systems, including unreliable return values for some calls (such as
2307 `pipe', `fork' and `getppid').
2309 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2310 to `EAGAIN', which is the preferred name. On systems whose kernels
2311 use two distinct codes, the C library now translates EWOULDBLOCK to
2312 EAGAIN in every system call function.
2316 * The GNU C Library Reference Manual is now distributed with the library.
2317 `make dvi' will produce a DVI file of the printed manual.
2318 `make info' will produce Info files that you can read on line using C-h i
2319 in Emacs or the `info' program.
2320 Please send comments on the manual to bug-glibc-manual@gnu.org.
2322 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2324 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2326 * Jason Merrill has contributed a port to the Sequent Symmetry running
2327 Dynix version 3 (i386-sequent-dynix).
2329 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2330 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2332 * New function `memory_warnings' lets you arrange to get warnings when
2333 malloc is running out of memory to allocate, like Emacs gives you.
2335 * The C library now contains the relocating allocator used in Emacs 19 for
2336 its editing buffers. This allocator (ralloc) minimizes allocation
2337 overhead and fragmentation by moving allocated regions around whenever it
2338 needs to. You always refer to a ralloc'd region with a "handle" (a
2339 pointer to a pointer--an object of type `void **').
2341 * There is a new `printf' format: `%m' gives you the string corresponding
2342 to the error code in `errno'.
2344 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2345 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2346 pass, the `a' modifier says to fill in a `char **' you pass with a
2349 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2350 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2351 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2353 * `mkstemp' is a traditional Unix function to atomically create and open a
2354 uniquely-named temporary file.
2358 * The standard location for the file that says what the local timezone is
2359 has changed again. It is now `/usr/local/etc/localtime' (or more
2360 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2362 * The distribution no longer contains any files with names longer than 14
2365 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2366 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2368 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2372 * The configuration process has changed quite a bit. The `configure'
2373 script is now used just like the configuration scripts for other GNU
2374 packages. The `sysdeps' directory hierarchy is much rearranged.
2375 The file `INSTALL' explains the new scheme in detail.
2377 * The header files no longer need to be processed into ANSI C and
2378 traditional C versions. There is just one set of files to install, and
2379 it will work with ANSI or old C compilers (including `gcc -traditional').
2381 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2382 MIPS DECStation running Ultrix 4.
2384 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2385 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2386 made itself into a shared library.
2388 * Yet further improved support for the i386, running 4.3 BSD-like systems
2389 (such as Mach 3 with the Unix single-server), or System V.
2391 * New function `strncasecmp' to do case-insensitive string comparison
2392 with limited length.
2394 * New function `strsep' is a reentrant alternative to `strtok'.
2396 * New functions `scandir' and `alphasort' for searching directories.
2398 * New function `setenv' is a better interface to `putenv'.
2400 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2401 function for traversing a directory tree.
2403 * The GNU obstack package is now also part of the C library.
2404 The new function `open_obstack_stream' creates a stdio stream that
2405 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2406 formatted output directly to an obstack.
2408 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2409 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2411 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2413 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2414 things to your strings.
2416 * There are some new test programs: test-fseek, testmb, and testrand.
2418 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2419 These ports are not finished, but are a good starting place for really
2420 supporting those systems.
2422 * `/etc/localtime' is now the standard location for the file that says what
2423 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2424 This follows the general principle that `/etc' is the place for all local
2425 configuration files.
2427 * The C library header files now use `extern "C"' when used by the C++
2428 compiler, so the C library should now work with C++ code.
2430 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2431 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2434 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2435 function which uses the `merge sort' algorithm, and is said to be
2436 significantly faster than the old GNU `qsort' function. Merge sort is
2437 now the standard `qsort' function. The new algorithm can require a lot
2438 of temporary storage; so, the old sorting function is called when the
2439 required storage is not available.
2441 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2442 provides the Unix `crypt' function, plus some other entry points.
2444 * The code and header files taken from 4.4 BSD have been updated with the
2445 latest files released from Berkeley.
2447 ----------------------------------------------------------------------
2448 Copyright information:
2450 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2452 Permission is granted to anyone to make or distribute verbatim copies
2453 of this document as received, in any medium, provided that the
2454 copyright notice and this permission notice are preserved,
2455 thus giving the recipient permission to redistribute in turn.
2457 Permission is granted to distribute modified versions
2458 of this document, or of portions of it,
2459 under the above conditions, provided also that they
2460 carry prominent notices stating who last changed them.
2463 version-control: never
projects / platform / upstream / linaro-glibc.git / blob