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 16532, 16545, 16574, 16599, 16600, 16609, 16610, 16611, 16613, 16619,
15 16623, 16629, 16632, 16634, 16639, 16642, 16648, 16649, 16670, 16674,
16 16677, 16680, 16683, 16689, 16695, 16701, 16706, 16707, 16712, 16713,
17 16714, 16731, 16739, 16740, 16743, 16754, 16758, 16759, 16760, 16770,
18 16786, 16789, 16791, 16799, 16800, 16815, 16823, 16824, 16831, 16838,
19 16854, 16876, 16877, 16885, 16888, 16890, 16912, 16916, 16922, 16932.
21 * The minimum Linux kernel version that this version of the GNU C Library
22 can be used with is 2.6.32.
24 * Running the testsuite no longer terminates as soon as a test fails.
25 Instead, a file tests.sum (xtests.sum from "make xcheck") is generated,
26 with PASS or FAIL lines for individual tests. A summary of the results is
27 printed, including a list of failing lists, and "make check" exits with
28 error status if there were any unexpected failures. "make check
29 stop-on-test-failure=y" may be used to keep the old behavior.
31 * The am33 port, which had not worked for several years, has been removed
34 * The _BSD_SOURCE and _SVID_SOURCE feature test macros are no longer
35 supported; they now act the same as _DEFAULT_SOURCE (but generate a
36 warning). Except for cases where _BSD_SOURCE enabled BSD interfaces that
37 conflicted with POSIX (support for which was removed in 2.19), the
38 interfaces those macros enabled remain available when compiling with
39 _GNU_SOURCE defined, with _DEFAULT_SOURCE defined, or without any feature
42 * Optimized strcmp implementation for ARMv7. Contributed by ARM Ltd.
44 * Added support for TX lock elision of pthread mutexes on s390 and s390x.
45 This may improve lock scaling of existing programs on TX capable systems.
46 The lock elision code is only built with --enable-lock-elision=yes and
47 then requires a GCC version supporting the TX builtins. With lock elision
48 default mutexes are elided via __builtin_tbegin, if the cpu supports
49 transactions. By default lock elision is not enabled and the elision code
54 * The following bugs are resolved with this release:
56 156, 387, 431, 762, 832, 926, 2801, 4772, 6786, 6787, 6807, 6810, 6981,
57 7003, 9721, 9954, 10253, 10278, 11087, 11157, 11214, 12100, 12486, 12751,
58 12986, 13028, 13982, 13985, 14029, 14032, 14120, 14143, 14155, 14286,
59 14547, 14699, 14752, 14782, 14876, 14910, 15004, 15048, 15073, 15089,
60 15128, 15218, 15268, 15277, 15308, 15362, 15374, 15400, 15425, 15427,
61 15483, 15522, 15531, 15532, 15593, 15601, 15608, 15609, 15610, 15632,
62 15640, 15670, 15672, 15680, 15681, 15723, 15734, 15735, 15736, 15748,
63 15749, 15754, 15760, 15763, 15764, 15797, 15799, 15825, 15843, 15844,
64 15846, 15847, 15849, 15850, 15855, 15856, 15857, 15859, 15867, 15886,
65 15887, 15890, 15892, 15893, 15895, 15897, 15901, 15905, 15909, 15915,
66 15917, 15919, 15921, 15923, 15939, 15941, 15948, 15963, 15966, 15968,
67 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16038, 16041, 16046,
68 16055, 16071, 16072, 16074, 16077, 16078, 16103, 16112, 16143, 16144,
69 16146, 16150, 16151, 16153, 16167, 16169, 16172, 16195, 16214, 16245,
70 16271, 16274, 16283, 16289, 16293, 16314, 16316, 16330, 16337, 16338,
71 16356, 16365, 16366, 16369, 16372, 16375, 16379, 16381, 16384, 16385,
72 16386, 16387, 16390, 16394, 16398, 16400, 16407, 16408, 16414, 16430,
73 16431, 16453, 16474, 16506, 16510, 16529
75 * Slovenian translations for glibc messages have been contributed by the
76 Translation Project's Slovenian team of translators.
78 * The public headers no longer use __unused nor __block. This change is to
79 support compiling programs that are derived from BSD sources and use
80 __unused internally, and to support compiling with Clang's -fblock
81 extension which uses __block.
83 * CVE-2012-4412 The strcoll implementation caches indices and rules for
84 large collation sequences to optimize multiple passes. This cache
85 computation may overflow for large collation sequences and may cause a
86 stack or buffer overflow. This is now fixed to use a slower algorithm
87 which does not use a cache if there is an integer overflow.
89 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
90 rules for large collation sequences to optimize multiple passes and falls
91 back to alloca if malloc fails, resulting in a possible stack overflow.
92 The implementation now falls back to an uncached collation sequence lookup
95 * CVE-2013-4788 The pointer guard used for pointer mangling was not
96 initialized for static applications resulting in the security feature
97 being disabled. The pointer guard is now correctly initialized to a
98 random value for static applications. Existing static applications need
99 to be recompiled to take advantage of the fix (bug 15754).
101 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
102 to the d_name member of struct dirent, or omit the terminating NUL
103 character. (Bugzilla #14699).
105 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
106 aligned_alloc functions could allocate too few bytes or corrupt the
107 heap when passed very large allocation size values (Bugzilla #15855,
110 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
111 for AF_INET6 has been fixed (Bugzilla #16072).
113 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
114 pap_CW, quz_PE, the_NP.
116 * Substantially revised locales: gd_GB, ht_HT
118 * The LC_ADDRESS field was updated to support country_car for almost all
121 * ISO 1427 definitions were updated.
123 * ISO 3166 definitions were updated.
125 * The localedef utility now supports --big-endian and --little-endian
126 command-line options to generate locales for a different system from that
127 for which the C library was built.
129 * Binary locale files now only depend on the endianness of the system for
130 which they are generated and not on other properties of that system. As a
131 consequence, binary files generated with new localedef may be incompatible
132 with old versions of the GNU C Library, and binary files generated with
133 old localedef may be incompatible with this version of the GNU C Library,
134 in the following circumstances:
136 + Locale files may be incompatible on m68k systems.
138 + Locale archive files (but not separate files for individual locales) may
139 be incompatible on systems where plain "char" is signed.
141 * The configure option --disable-versioning has been removed. Builds with
142 --disable-versioning had not worked for several years.
144 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
145 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
147 * SystemTap probes for malloc have been introduced.
149 * SystemTap probes for slow multiple precision fallback paths of
150 transcendental functions have been introduced.
152 * Support for powerpc64le has been added.
154 * The soft-float powerpc port now supports e500 processors.
156 * Support for STT_GNU_IFUNC symbols added for ppc32/power4+ and ppc64.
158 * A new feature test macro _DEFAULT_SOURCE is available to enable the same
159 set of header declarations that are enabled by default, even when other
160 feature test macros or compiler options such as -std=c99 would otherwise
161 disable some of those declarations.
163 * The _BSD_SOURCE feature test macro no longer enables BSD interfaces that
164 conflict with POSIX. The libbsd-compat library (which was a dummy library
165 that did nothing) has also been removed.
167 * Preliminary documentation about Multi-Thread, Async-Signal and
168 Async-Cancel Safety has been added.
170 * Change of ABI data structures for s390 and s390x:
171 On s390 and s390x the size of struct ucontext and jmp_buf was increased to
172 allow for future hardware extensions. All library functions that accept or
173 return these structures were versioned in order to provide backwards
174 compatibility with existing code. However, not all cases can be handled
175 with interface versioning. If an application embeds either structure into
176 another structure and that structure is passed to another compilation unit
177 which expects the newer larger-sized object then any access to the new
178 fields will result in undefined behaviour. Similarly any access to fields
179 that were moved by the enlarging of the structures will cause undefined
180 behaviour. To fix the undefined behaviour all objects that are part of the
181 final in-memory image must agree on the size of structures, and this may
182 require recompilation.
186 * The following bugs are resolved with this release:
188 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
189 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
190 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
191 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
192 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
193 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
194 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
195 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
196 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
197 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
198 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
199 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
200 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
203 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
204 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
205 Distributions can re-enable building and using pt_chown via the new configure
206 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
207 considerable security risks and should only be used if the distribution
208 understands and accepts the risks.
210 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
213 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
214 fixed (Bugzilla #15330).
216 * Add support for calling C++11 thread_local object destructors on thread
217 and program exit. This needs compiler support for offloading C++11
218 destructor calls to glibc.
220 * Improved worst case performance of libm functions with double inputs and
223 * Support for priority inherited mutexes in pthread condition variables on
224 non-x86 architectures.
226 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
228 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
230 * Optimized string functions for ARM. Implemented by Will Newton and
233 * Optimized libm functions for SPARC. Implemented by David S. Miller.
235 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
238 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
239 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
241 * Added a benchmark framework to track performance of functions in glibc.
243 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
244 It is based on draft TS 18661 and currently enabled as a GNU extension.
246 * On Linux, the clock function now uses the clock_gettime system call
247 for improved precision, rather than old times system call.
249 * Added support for version-3 tz format files. This is needed when using
250 the tz database release 2013e or later, and affects a few unusual cases --
251 currently only TZ='America/Godthab' for time stamps after 2037.
253 * Added new API functions pthread_getattr_default_np and
254 pthread_setattr_default_np to get and set the default pthread
255 attributes of a process.
257 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
258 This may improve lock scaling of existing programs on TSX capable systems.
259 When the --enable-lock-elision=yes parameter is specified at configure
260 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
263 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
264 availability). Implemented by Ryan S. Arnold.
266 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
270 * The following bugs are resolved with this release:
272 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
273 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
274 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
275 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
276 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
277 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
278 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
279 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
280 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
281 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
282 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
283 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
284 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
285 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
286 14879, 14889, 14893, 14898, 14914.
288 * Optimization of memcpy for MIPS.
290 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
291 EMFILE has been fixed (Bugzilla #14889).
293 * The add-on ports collection is now distributed in the "ports" subdirectory
294 of the main GNU C Library distribution, rather than separately.
296 * Port to ARM AArch64 contributed by Linaro.
298 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
299 Optimized versions of memcpy, memset, and memcmp added for System z10 and
301 Implemented by Andreas Krebbel.
303 * The new function secure_getenv allows secure access to the environment,
304 returning NULL if running in a SUID/SGID process. This function replaces
305 the internal function __secure_getenv.
307 * SystemTap static probes have been added into the dynamic linker.
308 Implemented by Gary Benson.
310 * Optimizations of string functions strstr, strcasestr and memmem.
311 Implemented by Maxim Kuvyrkov.
313 * The minimum Linux kernel version that this version of the GNU C Library
314 can be used with is 2.6.16.
316 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
317 powerpc POWER7. Implemented by Will Schmidt.
319 * New configure option --disable-nscd builds the C library such that it
320 never attempts to contact the Name Service Caching Daemon (nscd).
321 New configure option --disable-build-nscd avoids building nscd itself;
322 this is the default if --disable-nscd is used.
324 * Improved support for cross-compilation, including cross-testing and
325 bootstrap builds without a previously built glibc.
327 * Several testsuite tests are now able to test multiple IFUNC variants of an
328 interface, rather than just testing the one that would be chooen by
331 * New configure options --with-bugurl and --with-pkgversion, for
332 distributors to use to embed their bug-reporting and package version
333 information in --help and --version output.
335 * The ttyname and ttyname_r functions on Linux now fall back to searching for
336 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
337 allows creation of chroots without the procfs mounted on /proc.
339 * The `crypt' function now fails if passed salt bytes that violate the
340 specification for those values. On Linux, the `crypt' function will
341 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
342 enabled, and fail on encrypted strings using the MD5 or DES algorithm
343 when the mode is enabled.
345 * The `clock_*' suite of functions (declared in <time.h>) is now available
346 directly in the main C library. Previously it was necessary to link with
347 -lrt to use these functions. This change has the effect that a
348 single-threaded program that uses a function such as `clock_gettime' (and
349 is not linked with -lrt) will no longer implicitly load the pthreads
350 library at runtime and so will not suffer the overheads associated with
351 multi-thread support in other code such as the C++ runtime library.
353 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
358 * The following bugs are resolved with this release:
360 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
361 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
362 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
363 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
364 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
365 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
366 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
367 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
368 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
369 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
370 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
371 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
372 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
373 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
374 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
375 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
376 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
377 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
378 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
379 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
380 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
381 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
384 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
385 configuring glibc with:
386 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
387 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
388 Implemented by H.J. Lu.
392 + define static_assert
394 + do not declare gets
396 + declare at_quick_exit and quick_exit also for ISO C11
398 + aligned_alloc. NB: The code is deliberately allows the size parameter
399 to not be a multiple of the alignment. This is a moronic requirement
400 in the standard but it is only a requirement on the caller, not the
405 + uchar.h support added
407 + CMPLX, CMPLXF, CMPLXL added
409 Implemented by Ulrich Drepper.
411 * Support for the IA-64 has been moved to ports.
413 * Remove support for anything but ELF binary format
415 * Checking versions of poll, ppoll added.
416 Implemented by Ulrich Drepper.
418 * More generic and 64-bit performance optimizations to math functions.
419 Implemented by Ulrich Drepper.
421 * New configure option --enable-obsolete-rpc makes the deprecated RPC
422 headers and functions available at compile time as they were before
423 version 2.14. This option will be removed at some time in the future
424 after the TI-RPC library becomes fully sufficient for the needs of
425 existing applications.
427 * Compatibility code for Linux kernel versions before 2.4 has been removed.
428 Note that glibc is not expected to work with any Linux kernel version
431 * New header <sys/auxv.h> and function getauxval allowing easy access to
432 the AT_* key-value pairs passed from the Linux kernel. The header also
433 defines the HWCAP_* bits associated with the AT_HWCAP key.
435 * New locales: mag_IN
437 * New configure option --enable-systemtap builds SystemTap static probes
438 into libc for setjmp and longjmp and into libpthread for various operations.
439 So far the setjmp/longjmp probes and some of the libpthread probes are
440 provided only for i*86 and x86_64.
441 Implemented by Roland McGrath and Rayson Ho.
443 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
445 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
448 * More optimized functions for SPARC. Implemented by David S. Miller.
450 * Improved support for cross-compilation, especially bootstrap builds
451 without a previously built glibc.
453 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
454 Chris Metcalf from Tilera.
456 * Support for the old ARM ABI has been removed from ports. Only the EABI is
457 now supported for ARM processors.
459 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
460 as the name of the dynamic linker, to distinguish it from the
461 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
463 * Support for CRIS has been removed from ports.
465 * A new class of installed header has been documented for low-level
466 platform-specific functionality. PowerPC added the first instance with a
467 function to provide time base register access. Contributed by Tulio
468 Magno Quites Machado Filho.
470 * ix86 configurations now install header files that are consistent with
471 what x86-64 configurations install. These same header files can be used
472 for -m32, -m64, or -mx32 builds.
473 Contributed by H.J. Lu.
475 * Math library bug fixes. A thorough audit of all open math library bugs was
476 conducted by Joseph Myers. Significant progress was made on many math
477 library bugs resulting in more accurate exceptions and function results.
478 Many thanks to all those that contributed including Andreas Jaeger for his
479 patch review and work on the x87 trigonometric instruction issues.
481 * Timezone data is no longer installed. Timezone-related binaries and scripts
482 will continue to be installed. Users should obtain their timezone data from
483 their distribution provider or from the tzdata package at
484 <ftp://munnari.oz.au/pub/>.
488 * The following bugs are resolved with this release:
490 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
491 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
492 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
493 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
494 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
495 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
496 13484, 13506, 13515, 13523, 13524, 13538, 13540
498 * New program pldd to list loaded object of a process
499 Implemented by Ulrich Drepper.
501 * Add nss_db support back to glibc. No more dependency on Berkeley db
502 and support for initgroups lookups.
503 Implemented by Ulrich Drepper.
505 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
506 Contributed by HJ Lu.
508 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
509 Contributed by HJ Lu.
511 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
512 on x86-32 and x86-64.
513 Contributed by Liubov Dmitrieva.
515 * Optimized strchr and strrchr for SSE on x86-32.
516 Contributed by Liubov Dmitrieva.
518 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
519 for x86-64 and x86-32.
520 Contributed by Liubov Dmitrieva.
522 * New interfaces: scandirat, scandirat64
523 Implemented by Ulrich Drepper.
525 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
526 Implemented by Ulrich Drepper.
528 * nscd now also caches the netgroup database.
529 Implemented by Ulrich Drepper.
531 * Integrate libm with gcc's -ffinite-math-only option.
532 Implemented by Ulrich Drepper.
534 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
535 to math functions. Implemented by Ulrich Drepper.
537 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
538 Implemented by Ulrich Drepper.
540 * New Linux interfaces: process_vm_readv, process_vm_writev
542 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
543 Implemented by Ulrich Drepper.
545 * Optimized nearbyint and strcasecmp for PPC.
546 Implemented by Adhemerval Zanella.
548 * New locales: bho_IN, unm_US, es_CU, ta_LK
552 * The following bugs are resolved with this release:
554 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
555 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
556 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
557 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
558 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
559 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
560 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
561 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
562 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
563 12795, 12811, 12813, 12814, 12841
565 * The RPC implementation in libc is obsoleted. Old programs keep working
566 but new programs cannot be linked with the routines in libc anymore.
567 Programs in need of RPC functionality must be linked against TI-RPC.
568 The TI-RPC implementation is IPv6 enabled and there are other benefits.
570 Visible changes of this change include (obviously) the inability to link
571 programs using RPC functions without referencing the TI-RPC library and the
572 removal of the RPC headers from the glibc headers.
573 Implemented by Ulrich Drepper.
575 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
576 syncfs, setns, sendmmsg
578 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
579 yue_HK, lij_IT, mhr_RU
581 * New encodings: CP770, CP771, CP772, CP773, CP774
583 * New program sotruss to trace calls through PLTs
584 Implemented by Ulrich Drepper.
586 * The malloc hook implementation is marked deprecated and will be removed
587 from the default implementation in the next version. The design never
588 worked ever since the introduction of threads. Even programs which do
589 not create threads themselves can use multiple threads created internally.
593 * The following bugs are resolved with this release:
595 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
596 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
597 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
598 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
601 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
603 * POWER7 optimizations: memset, memcmp, strncmp
605 * New optimized string functions for x86-64: strnlen (SSE2),
606 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
607 Implemented by Ulrich Drepper.
611 * The following bugs are resolved with this release:
613 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
614 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
615 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
616 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
617 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
618 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
619 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
620 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
622 * New interfaces: pthread_getname_np, pthread_setname_np
624 * New Linux interface: recvmmsg
626 * STT_GNU_IFUNC implemented for Sparc by David Miller.
628 * The dynamic linker now recognizes supported ABI versions from the
629 EI_ABIVERSION field in the ELF header.
630 Implemented by Ulrich Drepper.
632 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
633 will not be used to fill in password fields in the passwd.byname replies.
634 Instead it is used to synthesize the shadow.byname table, should it be
635 missing. This is a useful mode in some installations involving Solaris.
636 Implemented by Ulrich Drepper.
638 * New locales: kok_IN, sq_MK, cv_RU
642 * The following bugs are resolved with this release:
644 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
645 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
646 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
647 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
648 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
649 10789, 10817, 10823, 10840, 10847
651 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
653 Implemented by Ulrich Drepper.
655 * Checking version of longjmp added that fails if an uninitialized stack
656 frame would be created. Implemented by Ulrich Drepper.
658 * STT_GNU_IFUNC is now supported in static executables.
659 Implemented by H.J. Lu.
661 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
663 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
664 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
665 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
666 Contributed by H.J. Lu.
668 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
669 Implemented by Ulrich Drepper.
671 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
673 Contributed by H.J. Lu.
675 * Support for fma instruction in AVX on x86-64.
676 Implemented by H.J. Lu and Ulrich Drepper.
678 * AVX support in x86-64 auditing support in ld.so.
679 Implemented by H.J. Lu.
681 * STB_GNU_UNIQUE support added.
682 Implemented by Ulrich Drepper.
684 * Implement second fallback mode for optimized DNS lookup for even more
685 broken environments. If two requests from the same port are not
686 handled correctly close the socket and open a new one before sending
687 the second request. The 'single-request-reopen' option in /etc/resolv.conf
688 can be used to select this mode right away, instead of rediscovering the
689 necessity is every process again.
690 Implemented by Ulrich Drepper.
692 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
693 Implemented by Adam Tkac.
695 * Optimized iconv conversions for S390x.
696 Implemented by Andreas Krebbel.
698 * Using condvars with PI mutexes is now more efficient due to kernel
699 support for requeueing to PI futexes. NPTL support added for x86-64.
700 Implemented by Ulrich Drepper.
702 * New locales: ps_AF, my_MM
706 * The following bugs are resolved with this release:
708 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
709 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
710 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
711 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
712 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
714 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
715 Implemented by Ulrich Drepper.
717 * New Linux interfaces: accept4, fallocate, fallocate64.
718 Implemented by Ulrich Drepper.
720 * Correct declarations of string function when used in C++ code. This
721 could lead to compile errors for invalid C++ code.
723 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
726 * New POSIX 2008 interface: psiginfo
727 Implemented by Ulrich Drepper.
729 * New ISO C++1x interfaces: quick_exit, at_quick_exit
730 Implemented by Ulrich Drepper.
732 * Support for selecting between multiple function definitions at runtime
733 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
735 * The libcrypt library can now use the hash function implementations in
736 NSS. Implemented by Ulrich Drepper.
738 * The malloc implementation can be compiled to be less memory efficient
739 but higher performing in multi-threaded programs.
740 Implemented by Ulrich Drepper.
742 * New locales: nan_TW@latin, ks_IN
744 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
745 Implemented by Ulrich Drepper.
747 * Extended printf hook support. It is possible to use user-defined types
748 and extend existing format specifiers.
749 Implemented by Ulrich Drepper.
751 * Handling for group shadow files has been added.
752 Implemented by Ulrich Drepper.
754 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
755 servers (the case, e.g., for some people using the built-in DNS
756 server in ADSL modems/routers). There is a once-per-process timeout
757 in case of a broken server. To avoid it, users can run nscd or put
758 'options single-request' in /etc/resolv.conf.
759 Implemented by Ulrich Drepper.
763 * The following bugs are resolved with this release:
765 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
766 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
767 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
768 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
769 6968, 6974, 6980, 6995, 7008, 7009, 7029
771 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
772 up at the same time. Implemented by Ulrich Drepper.
774 * TLS descriptors for LD and GD on x86 and x86-64.
775 Implemented by Alexandre Oliva.
777 * getaddrinfo now handles DCCP and UDPlite.
778 Implemented by Ulrich Drepper.
780 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
781 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
782 Implemented by Ulrich Drepper.
784 * New implementation of memmem, strstr, and strcasestr which is O(n).
785 Implemented by Eric Blake.
787 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
789 * Implement "e" option for popen to open file descriptor with the
790 close-on-exec flag set. Implemented by Ulrich Drepper.
792 * Implement "b" mode for fmemopen. In this mode writes writes don't
793 implicitly add a NUL byte and seeks from the end of the buffer really
794 use the buffer end, not the string length as the basis.
795 Implemented by Ulrich Drepper.
797 * Many functions, exported and internal, now atomically set the close-on-exec
798 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
800 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
802 Implemented by Pravin Satpute.
804 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
808 * The following bugs are resolved with this release:
810 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
811 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
812 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
813 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
814 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
815 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
816 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
818 * New locales: bo_CN, bo_IN, shs_CA.
820 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
822 * Sorting rules for some Indian languages (Devanagari and Gujarati).
823 Implemented by Pravin Satpute.
825 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
827 * nscd caches now all timeouts for DNS entries
828 Implemented by Ulrich Drepper.
830 * nscd is more efficient and wakes up less often.
831 Implemented by Ulrich Drepper.
833 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
834 vdprintf, and obstack_vprintf.
835 Implemented by Jakub Jelinek.
837 * Faster memset for x86-64.
838 Implemented by Harsha Jagasia and H.J. Lu.
840 * Faster memcpy on x86.
841 Implemented by Ulrich Drepper.
843 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
844 Implemented by Ulrich Drepper.
846 * Faster sqrt and sqrtf implemention for some PPC variants.
847 Implemented by Steven Munroe.
851 * The following bugs are resolved with this release:
853 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
854 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
855 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
856 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
857 5071, 5103, 5104, 5112, 5113, 5184, 5186
859 * More checking functions: fread, fread_unlocked, open*, mq_open.
860 Implemented by Jakub Jelinek and Ulrich Drepper.
862 * Extend fortification to C++. Implemented by Jakub Jelinek.
864 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
865 by not recognizing 'a' as a modifier when those specs are requested.
866 Implemented by Jakub Jelinek.
868 * PPC optimizations to math and string functions.
869 Implemented by Steven Munroe.
871 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
872 options to be passed. Implemented by Ulrich Drepper.
874 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
876 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
877 Implemented by Ulrich Drepper.
879 * Handle private futexes in the NPTL implementation.
880 Implemented by Jakub Jelinek and Ulrich Drepper.
882 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
883 Implemented by Roland McGrath and Ulrich Drepper.
885 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
887 * SHA-256 and SHA-512 based password encryption.
888 Implemented by Ulrich Drepper.
890 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
891 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
894 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
895 Implemented by Ulrich Drepper.
899 * The following bugs are resolved with this release:
901 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
902 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
903 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
904 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
905 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
906 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
907 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
910 * New Linux interfaces: epoll_pwait, sched_getcpu.
912 * New generic interfaces: strerror_l.
914 * nscd can now cache the services database. Implemented by Ulrich Drepper.
918 * The following bugs are resolved with this release:
920 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
921 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
922 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
923 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
924 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
925 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
926 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
927 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
928 3225, 3251, 3252, 3253, 3273
930 * For Linux, the sorting of addresses returned by getaddrinfo now also
931 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
932 Implemented by Ulrich Drepper.
934 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
935 Implemented by Ulrich Drepper.
937 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
939 * New iconv module for MIK. Contributed by Alexander Shopov.
941 * For sites with broken group and/or passwd database, the auto-propagate
942 option of nscd can prevent creating ID lookup entries from the results
943 of a name lookup and vice versa. This usually is no problem but some
944 site might have problems with the default behavior.
945 Implemented by Ulrich Drepper.
947 * Iterating over entire database in NIS can be slow. With the
948 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
949 to trade time for memory. The entire database will be read at once.
950 Implemented by Ulrich Drepper.
952 * The interfaces introduced in RFC 3542 have been implemented by
955 * Support for the new ELF hash table format was added by Ulrich Drepper.
957 * Support for priority inheritance mutexes added by Jakub Jelinek and
960 * Support for priority protected mutexes added by Jakub Jelinek.
962 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
963 or_IN, csb_PL, fy_NL, sr_ME.
967 * More overflow detection functions.
969 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
970 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
972 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
973 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
974 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
975 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
976 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
977 by Masahide Washizawa.
979 * It is now possible to install audit libraries for the dynamic linker using
980 LD_AUDIT. Implemented by Ulrich Drepper.
982 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
983 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
984 For a libc and libpthread that works well on Linux 2.4 kernels, we
985 recommend using the stable 2.3 branch.
987 * The new function open_wmemstream acts like open_memstream,
988 but uses a wchar_t wide character buffer.
990 * The new function ppoll is an improved version of poll, similar to pselect.
992 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
993 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
994 renameat, unlinkat, linkat, symlinkat, readlinkat.
996 * New Linux kernel system calls: unshare,
997 inotify_init, inotify_add_watch, inotify_rm_watch.
999 * The euidaccess function is now also known by the alias eaccess,
1000 for compatibility with some other systems.
1002 * Timezone data updated to 2006b version.
1006 * The following bugs are resolved with this release:
1008 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
1009 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
1010 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
1011 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
1012 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
1013 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
1015 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1017 * As of this release, GCC 4 can be used to compile the C Library.
1019 * Timezone data updated to 2005m version.
1023 * The following bugs are resolved with this release:
1025 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
1026 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
1027 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
1028 777, 787, 821, 822, 823, 825
1030 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
1034 * Support for RFC 3678. Real implementations exist only for Linux so far.
1035 Implemented by Ulrich Drepper.
1037 * nscd can now cache entries persistently. Expiring entries are reloaded.
1038 For speedups the cache can be shared in memory with client processes.
1039 Implemented by Ulrich Drepper.
1041 * nscd can now perform SELinux checks.
1042 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
1044 * getaddrinfo queries are now cached. Canonical name lookup is performed
1046 Implemented by Ulrich Drepper.
1048 * The nothrow function attribute is used when headers are used by gcc when
1049 compiling C code. This can avoid significant amounts of exception
1052 * The malloc functions perform more error checking and are stricter when
1053 it comes to reacting on errors. The default action is to terminate
1054 the process after showing an error message. Implemented by Ulrich Drepper.
1056 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
1057 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
1059 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
1060 namespaces using the new function dlmopen(). This feature is of course,
1061 like most other dynamic loading functionality, not available in statically
1062 linked applications. Implemented by Ulrich Drepper.
1064 * Low-overhead boundary checking variants of string and some stdio functions
1065 were added. These are to be used in conjunction with a gcc patch by
1066 Jakub Jelinek which adds calls to these functions if possible.
1067 Implemented by Jakub Jelinek and Ulrich Drepper.
1069 * Old code for several operating systems and machine architectures that
1070 have not been in working condition in a long time have been removed from
1071 the main source tree maintained by the GNU C Library's maintainers.
1072 These files are now reside in the separate `ports' source module
1073 that is usable as an add-on when building the library.
1077 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
1078 interrogate the dynamic linker, compatible with the Solaris interface.
1080 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
1081 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
1083 * getifaddrs now uses the netlink interface on Linux to get its information.
1084 Implemented by Thorsten Kukuk.
1086 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
1087 Implemented by Ulrich Drepper.
1089 * support for non-executable stacks on x86 has been added. Changes mostly
1092 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1095 * getaddrinfo now performs destination address selection according to
1100 * Thread-safe interfaces for many functions that access locale data
1101 were added in version 2.3, but these features were omitted from NEWS.
1102 Many functions have variants with an `_l' suffix that take a `locale_t'
1103 object as a parameter rather than consulting the current locale.
1104 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1105 create and maintain `locale_t' objects. Additionally, the new function
1106 `uselocale' sets "the current locale" (as used by functions not so
1107 parameterized) set for an individual thread. These features were added
1108 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1110 * The functions getresuid, getresgid, setresuid, and setresgid, which
1111 have long been available on Linux, are now declared in <unistd.h>
1112 and are now also available on the Hurd.
1114 * ELF thread-local storage support (TLS) now works on x86-64.
1116 * The new dynamic string token $LIB is expanded in shared library names.
1117 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1119 * Aldy Hernandez contributed complete software floating point support for
1120 PowerPC machines with no FPU.
1122 * fexecve is implemented on Linux.
1124 * The `btowc' function should work at least twice as fast due to
1125 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1127 * With approriate thread add-ons cancelable functions are now implemented
1128 in libc.so as well. No need to call the function in libpthread. This
1129 change allowed to finally disable the incorrect and expensive handling
1130 of weak definition in ld.so.
1132 * Yet more PLT entries in libc.so have been removed. We finally arrived
1133 at the bare minimum. Startup times improved appropriately.
1135 * Support for the new Linux/x86 system call interface was added. The
1136 AT_SYSINFO auxiliary vector entry is recognized and handled.
1140 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1143 * iconv (the program and the interface) now accepts empty names (excluding
1144 options like //TRANSLIT) to mean "use charset of current locale".
1146 * localedef can now transliterate characters in strings which are not in
1147 the provided charmap. The information from the input locale is used.
1149 * Prelinking support was added for ELF targets. This requires additional
1150 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1152 * Read-only stdio streams now use mmap to speed up operation by eliminating
1153 copying and buffer underflows. To use add 'm' to the mode string of
1154 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1156 * The malloc functions were completely rewritten by Wolfram Gloger based
1157 on Doug Lea's malloc-2.7.0.c.
1159 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1160 implementation of regex.
1162 * Bruno Haible upgraded the iconv and locale implementation to support
1165 * Contents of the LC_* and LANG environment variables in the CEN style are
1166 not recognized anymore. It never was used. Change by Ulrich Drepper.
1168 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1169 thread-local storage (TLS) ABI on some platforms.
1170 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1172 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1173 EUC-JISX0213, and TSCII.
1175 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1176 BSD-compatible interface for getting all network interface addresses.
1177 Implementation for IPv4 by Roland McGrath.
1179 * Loading of locale data is faster due to the introduction of a locale
1180 archive. Implemented by Roland McGrath and Ulrich Drepper.
1182 * Startup times are significantly reduced by not using exported functions
1183 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1186 * Steven Munroe contributed a port to PowerPC64/Linux.
1190 * The Hurd now uses the GNU libio implementation of stdio rather than the
1191 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1193 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1194 with the same behavior as the Linux system call of the same name.
1198 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1199 128-bit long double format.
1201 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1202 IBM1161, and IBM1162 charsets.
1204 * Andreas Jaeger contributed a port to x86-64/Linux.
1206 * Peter Bruin contributed a port to PowerPC/Hurd.
1208 * libc functions using I/O streams now can handle wide-oriented streams
1211 * optimizations in the dynamic linker. Binaries created by recent binutils
1212 versions start up quicker due to reduced time spent on relocations.
1214 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1218 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1219 asinh, atanh, j0 for the 128-bit long double format.
1221 * Bruno Haible updated all the code handling Unicode in some form to
1222 support Unicode 3.1.
1224 * Speed of regex for single-byte locales is back to previous levels.
1225 Patch by Isamu Hasegawa.
1227 * Alpha, SPARC, and IA-64 now also using floating stacks.
1229 * Startup time of internationalized applications greatly improved through
1230 iconv cache. Use iconvconfig to generate the cache file.
1231 Contributed by Ulrich Drepper.
1233 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1234 severe performance problems. Patch by David Mosberger.
1236 * The Hurd port got a lot more functionality like AIO, various stdio
1237 extensions, etc. Mainly done by Roland McGrath.
1239 * mtrace can now lookup symbols in shared libraries.
1243 * Intel's IA-64 math library is largely integrated. It provides fast and
1244 accurate implementatations for most basic and standard math functions
1245 in float, double, and long double format.
1247 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1248 and asin for the 96-bit long double format and asin, log, tan for the
1249 128-bit long double format.
1251 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1252 The basic double functions exist today. Contributed by Abraham Ziv
1253 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1254 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1256 * An asynchronous name lookup library was added. The interface is designed
1257 after POSIX AIO. The proposal was circulated beforehand to get comments.
1258 No negative ones came in. Implemented by Ulrich Drepper.
1260 * Port to S390/64bit contributed by Martin Schwidefsky
1261 <schwidefsky@de.ibm.com>.
1263 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1264 of functions for Linux/IA-64.
1266 * The RPC code is now thread safe. Threads can now use the same service
1267 of different services at the same time. Patch by Eric Norum
1268 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1270 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1271 family of functions for Linux/S390.
1273 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1274 of functions for Linux/x86.
1276 * Port to Linux/CRIS contributed by Axis Communications.
1280 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1281 we can now check for namespace violations and missing declarations. The
1282 result is that almost all headers are now Unix-compliant (as defined in
1283 the upcoming XPG6). The negative side is that some programs might need
1284 corrections, too, if they depend on the incorrect form of the headers in
1285 previous versions which defined too many symbols and included too many
1288 * regex now handles multibyte character sets correctly.
1289 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1291 * iconv (the program) does now conform to the upcoming XPG6 and handles
1292 charmaps. Instead of the charset names the path of charmaps can be
1293 provided and the conversion happens based on this data.
1294 Contributed by Ulrich Drepper.
1296 * The locale program now provides detailed information about the installed
1301 only lists the names of the supported locales
1305 provides details such as country, language, and codeset name.
1306 Contributed by Ulrich Drepper.
1310 * The gencat program now parses the input file according to the charset
1311 selected by the LC_CTYPE category. This is important for stateful
1312 character sets. To make generating catalogs easier there is a way
1313 to overwrite the charset selected by the locale: before the first
1314 message or $ quote line the catalog can contain a line like
1316 $ codeset=ISO-8859-2
1318 to select the charset (ISO-8859-2 in this case).
1320 Implemented by Shinya Hanataka and Ulrich Drepper.
1322 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1323 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1324 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1326 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1327 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1329 * The LANGUAGE environment variable is now ignored unless the locale is
1330 changed from the default "C" locale.
1332 * The usual bug fixes.
1336 * Greg McGary added runtime support for bounds checking using gcc's
1337 new -fbounded-pointers option. ix86 target is complete. PowerPC
1340 * Thorsten Kukuk added secure mode support to nscd.
1342 * The Berkeley db libraries have been removed.
1344 Related, the nss_db module is now in a separate package since it
1345 obviously requires a database library being available.
1347 * Wide character I/O streams implemented by Ulrich Drepper.
1349 * Functions from the extended socket API added by Ulrich Drepper.
1351 * Functions feenableexcept and fedisableexcept to control the
1352 behaviour of individual exceptions have been added by Andreas Jaeger.
1354 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1356 * The resolver code has been updated from bind 8.2.3-T5B which supports
1357 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1360 This change could in some situations effect backward compatibility. Since
1361 now `_res' is a thread-local instead of a global variable, modifying it
1362 in one thread does not have any effect in other threads.
1364 The resolver library was also extended to allow IPv6 as the transport
1365 protocol for the requests. This work was done by Stig Venaas.
1367 * Compatibility code for K&R C compilers has been removed from the
1368 header files. A ISO C compiler is needed to use the library
1369 (conforming to either C89 or C99 standard).
1371 * Complete rewrite of the localedef program to support multibyte character
1372 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1373 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1374 Implemented by Ulrich Drepper.
1376 Bruno Haible significantly improved the generation and use of the data
1377 structures for the wide character tables.
1379 * Plural handling in gettext implemented by Ulrich Drepper.
1381 * The utmp daemon has been removed.
1383 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1385 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1388 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1390 * POSIX barriers implemented by Kaz Kylheku.
1392 * POSIX spawn function family implemented by Ulrich Drepper.
1394 * POSIX spinlocks are now available.
1396 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1398 * the configure option --enable-kernel=X.Y.Z allows to strip out
1399 compatibility for kernel versions before X.Y.Z. This is currently only
1400 implemented for Linux.
1402 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1403 field sin6_scope_id. This means that all programs using IPv6 should be
1404 recompiled. Don't expect binary compatibility with previous glibc
1407 * various conversion modules for IBM character sets contributed by
1410 * IA-64 port by Jes Sorensen and HJ Lu.
1424 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1426 * New xdr functions are added; some rpc functions are now 64bit clean.
1428 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1430 * Fixed known incompatibilities with glibc 2.0.
1432 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1434 * Optimized a number of functions (especially the ELF dynamic loader).
1436 * Update timezone data files.
1438 * lots of charmaps corrections
1440 * some new locale definitions and charmaps
1445 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1446 conform to POSIX member type requirements. Symbol versions have been
1447 adjusted as needed within the library, and for direct use by applications,
1448 but there is potential for problems if third-party libraries use
1449 struct timeval as part of their interface. This does not present
1450 a problem for X and other "essential" system libraries.
1452 * An additional locale model to support C++ Standard Library locale
1453 model and probably more was implemented by Ulrich Drepper.
1455 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1458 * Miles Bader provided the `argp' function family to support hierachical
1459 command line argument parsing, layered on top of getopt.
1461 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1463 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1466 * scanf recognizes the %a and %A format for scanning floating point numbers.
1468 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1469 information and interfaces for the available integer types.
1471 * about 130 new math functions were added to implement the ISO C9x math
1474 * the new header <complex.h> contains definitions of the complex math
1475 functions from ISO C 9X.
1477 * the new header <tgmath.h> defines generic macros to use complex or
1478 real valued functions.
1480 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1482 * Andreas Jaeger provided a test suite for the math library.
1484 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1486 * Ulrich Drepper added character set conversion functions (iconv).
1488 * Optimized string functions have been added.
1490 * The localedata addon is now part of glibc.
1492 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1494 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1495 daemon for NSS (nscd).
1497 Missing a better place here are some numbers on improvements. Under
1498 Linux 2.1.125 un-tar-ing the kernel sources takes
1502 using local files 12.19s 6.88s 22.91s
1504 using NIS 13.92s 8.91s 26.34s
1506 using NIS & nscd 10.37s 7.34s 25.30s
1508 using NIS+ 27.57s 30.37s 640.46s
1510 using NIS+ & nscd 10.25s 7.83s 26.51s
1512 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1514 Keep in mind that non-namelookup related operations dominate above times.
1515 It was just a common complain that using NIS+ unpacking the kernel is
1518 [1] The old nscd implementation is not available anymore since it was
1519 distributed with glibc up to version 2.0.98 and thus is now replaced.
1521 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1523 * Mark Kettenis provided a Hesiod NSS module.
1525 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1526 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1528 * rcmd can now handle netgroups (Dick Streefland).
1530 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1533 * Support for the IPv6 protocol has been added to the socket API, as per the
1534 latest draft standards.
1536 * Support for Linux 2.2 has been added.
1538 * Interface changes relative to the latest 2.0.x release:
1539 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1540 addseverity NEW: Unix98
1541 alphasort64 NEW: LFS
1542 argp_err_exit_status NEW: argp, GNU ext
1543 argp_error NEW: argp, GNU ext
1544 argp_failure NEW: argp, GNU ext
1545 argp_help NEW: argp, GNU ext
1546 argp_parse NEW: argp, GNU ext
1547 argp_program_bug_address NEW: argp, GNU ext
1548 argp_program_version NEW: argp, GNU ext
1549 argp_program_version_hook NEW: argp, GNU ext
1550 argp_state_help NEW: argp, GNU ext
1551 argp_usage NEW: argp, GNU ext
1552 authdes_create NEW: Secure RPC
1553 authdes_getucred NEW: Secure RPC
1554 authdes_pk_create NEW: Secure RPC
1555 backtrace NEW: GNU ext.
1556 backtrace_symbols NEW: GNU ext.
1557 backtrace_symbols_fd NEW: GNU ext.
1559 cacosf NEW: ISO C 9x
1560 cacosh NEW: ISO C 9x
1561 cacoshf NEW: ISO C 9x
1562 cacoshl NEW: ISO C 9x
1563 cacosl NEW: ISO C 9x
1570 casinf NEW: ISO C 9x
1571 casinh NEW: ISO C 9x
1572 casinhf NEW: ISO C 9x
1573 casinhl NEW: ISO C 9x
1574 casinl NEW: ISO C 9x
1576 catanf NEW: ISO C 9x
1577 catanh NEW: ISO C 9x
1578 catanhf NEW: ISO C 9x
1579 catanhl NEW: ISO C 9x
1580 catanl NEW: ISO C 9x
1581 cbc_crypt NEW: Secure RPC
1585 ccoshf NEW: ISO C 9x
1586 ccoshl NEW: ISO C 9x
1592 cimagf NEW: ISO C 9x
1593 cimagl NEW: ISO C 9x
1594 clearerr_locked REMOVED
1595 clntunix_create NEW: sunrpc ext
1597 clog10 NEW: ISO C 9x
1598 clog10f NEW: ISO C 9x
1599 clog10l NEW: ISO C 9x
1609 cprojf NEW: ISO C 9x
1610 cprojl NEW: ISO C 9x
1612 crealf NEW: ISO C 9x
1613 creall NEW: ISO C 9x
1618 csinhf NEW: ISO C 9x
1619 csinhl NEW: ISO C 9x
1622 csqrtf NEW: ISO C 9x
1623 csqrtl NEW: ISO C 9x
1627 ctanhf NEW: ISO C 9x
1628 ctanhl NEW: ISO C 9x
1630 des_setparity NEW: Secure RPC
1631 ecb_crypt NEW: Secure RPC
1632 endutxent NEW: Unix98
1634 exp10f NEW: ISO C 9x
1635 exp10l NEW: ISO C 9x
1639 fattach NEW: STREAMS
1640 fdetach NEW: STREAMS
1644 feclearexcept NEW: ISO C 9x
1645 fegetenv NEW: ISO C 9x
1646 fegetexceptflag NEW: ISO C 9x
1647 fegetround NEW: ISO C 9x
1648 feholdexcept NEW: ISO C 9x
1650 feraiseexcept NEW: ISO C 9x
1651 ferror_locked REMOVED
1652 fesetenv NEW: ISO C 9x
1653 fesetexceptflag NEW: ISO C 9x
1654 fesetround NEW: ISO C 9x
1655 fetestexcept NEW: ISO C 9x
1656 feupdateenv NEW: ISO C 9x
1657 fflush_locked REMOVED
1661 fgets_unlocked NEW: GNU ext.
1662 fileno_locked REMOVED
1674 fputc_locked REMOVED
1675 fputs_unlocked NEW: GNU ext.
1676 fread_unlocked NEW: GNU ext.
1681 fstatvfs NEW: Unix98
1685 ftruncate64 NEW: LFS
1687 fwrite_unlocked NEW: GNU ext.
1688 gai_strerror NEW: IPv6
1692 getchar_locked REMOVED
1694 getdate_err NEW: Unix98
1695 getdate_r NEW: GNU ext.
1697 getnameinfo NEW: IPv6
1698 getnetname NEW: Secure RPC
1699 getpmsg NEW: STREAMS
1700 getpt NEW: Unix98 PTY
1701 getrlimit64 NEW: LFS
1702 getutxent NEW: Unix98
1703 getutxid NEW: Unix98
1704 getutxline NEW: Unix98
1705 glob64 NEW: GNU ext.
1706 globfree64 NEW: GNU ext.
1707 gnu_get_libc_release NEW: GNU ext.
1708 gnu_get_libc_version NEW: GNU ext.
1709 grantpt NEW: Unix98 PTY
1710 host2netname NEW: Secure RPC
1712 iconv_close NEW: iconv
1713 iconv_open NEW: iconv
1714 if_freenameindex NEW: IPv6
1715 if_indextoname NEW: IPv6
1716 if_nameindex NEW: IPv6
1717 if_nametoindex NEW: IPv6
1718 in6addr_any NEW: IPv6
1719 in6addr_loopback NEW: IPv6
1720 inet6_isipv4mapped NEW: IPv6
1721 isastream NEW: STREAMS
1722 iswblank NEW: GNU ext.
1723 key_decryptsession NEW: Secure RPC
1724 key_decryptsession_pk NEW: Secure RPC
1725 key_encryptsession NEW: Secure RPC
1726 key_encryptsession_pk NEW: Secure RPC
1727 key_gendes NEW: Secure RPC
1728 key_get_conv NEW: Secure RPC
1729 key_secretkey_is_set NEW: Secure RPC
1730 key_setnet NEW: Secure RPC
1731 key_setsecret NEW: Secure RPC
1732 llrint NEW: ISO C 9x
1733 llrintf NEW: ISO C 9x
1734 llrintl NEW: ISO C 9x
1735 llround NEW: ISO C 9x
1736 llroundf NEW: ISO C 9x
1737 llroundl NEW: ISO C 9x
1742 lrintf NEW: ISO C 9x
1743 lrintl NEW: ISO C 9x
1744 lround NEW: ISO C 9x
1745 lroundf NEW: ISO C 9x
1746 lroundl NEW: ISO C 9x
1748 makecontext NEW: Unix98
1749 mempcpy NEW: GNU ext.
1752 modify_ldt NEW: kernel
1756 nearbyint NEW: ISO C 9x
1757 nearbyintf NEW: ISO C 9x
1758 nearbyintl NEW: ISO C 9x
1759 netname2host NEW: Secure RPC
1760 netname2user NEW: Secure RPC
1761 nexttoward NEW: ISO C 9x
1762 nexttowardf NEW: ISO C 9x
1763 nexttowardl NEW: ISO C 9x
1767 passwd2des NEW: Secure RPC
1769 pow10f NEW: GNU ext.
1770 pow10l NEW: GNU ext.
1773 printf_size NEW: GNU ext.
1774 printf_size_info NEW: GNU ext.
1775 profil_counter REMOVED
1776 pthread_mutexattr_getkind_np REPLACED
1777 pthread_mutexattr_setkind_np REPLACED
1778 ptsname NEW: Unix98 PTY
1779 ptsname_r NEW: Unix98 PTY
1781 putchar_locked REMOVED
1782 putgrent NEW: GNU ext.
1784 putpmsg NEW: STREAMS
1785 pututxline NEW: Unix98
1789 readdir64_r NEW: LFS
1790 remquo NEW: ISO C 9x
1791 remquof NEW: ISO C 9x
1792 remquol NEW: ISO C 9x
1794 roundf NEW: ISO C 9x
1795 roundl NEW: ISO C 9x
1797 scalbln NEW: ISO C 9x
1798 scalblnf NEW: ISO C 9x
1799 scalblnl NEW: ISO C 9x
1801 sendfile NEW: kernel
1802 setcontext NEW: Unix98
1803 setrlimit64 NEW: LFS
1804 setutxent NEW: Unix98
1806 sigignore NEW: Unix98
1807 sigqueue NEW: POSIX.1b
1808 sigrelse NEW: Unix98
1809 sigset NEW: POSIX.1b
1810 sigtimedwait NEW: POSIX.1b
1811 sigwaitinfo NEW: POSIX.1b
1812 sincos NEW: GNU ext.
1813 sincosf NEW: GNU ext.
1814 sincosl NEW: GNU ext.
1818 strcasestr NEW: GNU ext.
1819 strtoimax NEW: ISO C 9x
1820 strtoumax NEW: ISO C 9x
1821 strverscmp NEW: GNU ext.
1822 svcauthdes_stats NEW: Secure RPC
1823 svcunix_create NEW: sunrpc etx
1824 svcunixfd_create NEW: sunrpc ext
1825 swapcontext NEW: Unix98
1826 tcgetsid NEW: Unix98 PTY
1827 tdestroy NEW: GNU ext.
1828 tgamma NEW: ISO C 9x
1829 tgammaf NEW: ISO C 9x
1830 tgammal NEW: ISO C 9x
1834 truncf NEW: ISO C 9x
1835 truncl NEW: ISO C 9x
1837 unlockpt NEW: Unix98 PTY
1838 updwtmpx NEW: Unix98
1839 user2netname NEW: Secure RPC
1840 utmpxname NEW: Unix98
1841 versionsort NEW: GNU ext.
1842 versionsort64 NEW: GNU ext.
1844 wcscasecmp NEW: GNU ext.
1845 wcsncasecmp NEW: GNU ext.
1846 wcsnlen NEW: GNU ext.
1847 wcstoimax NEW: ISO C 9x
1848 wcstoll NEW: ISO C 9x
1849 wcstoull NEW: ISO C 9x
1850 wcstoumax NEW: ISO C 9x
1852 wordexp NEW: POSIX.2
1853 wordfree NEW: POSIX.2
1854 write_profiling REMOVED
1855 xdecrypt NEW: Secure RPC
1856 xdr_authdes_cred NEW: Secure RPC
1857 xdr_authdes_verf NEW: Secure RPC
1858 xdr_cryptkeyarg NEW: Secure RPC
1859 xdr_cryptkeyarg2 NEW: Secure RPC
1860 xdr_cryptkeyres NEW: Secure RPC
1861 xdr_getcredres NEW: Secure RPC
1862 xdr_key_netstarg NEW: Secure RPC
1863 xdr_key_netstres NEW: Secure RPC
1864 xdr_keybuf NEW: Secure RPC
1865 xdr_keystatus NEW: Secure RPC
1866 xdr_netnamestr NEW: Secure RPC
1867 xdr_sizeof NEW: Secure RPC
1868 xdr_unixcred NEW: sunrpc ext
1869 xencrypt NEW: Secure RPC
1870 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1881 * inet_ntoa is thread-safe
1883 * updwtmp is moved from libutil to libc
1885 * rewrite of cbrt function
1887 * update of timezone data
1901 * add atoll function
1903 * fix complex problems in Berkeley DB code
1905 * fix math functions
1909 * fixed lots of header problems (especially Linux/GNU specific)
1911 * dynamic loader preserves all registers
1913 * Roland McGrath provided support for handling of auxiliary objects in
1914 the ELF dynamic loader.
1916 * support for parallel builds is improved
1920 * GNU extensions are no longer declared by default. To enable them you
1921 must define the macro `_GNU_SOURCE' in your program or compile with
1924 * The library has changed from using GNU ld symbol aliases to using weak
1925 symbols where available. The ELF object file format supports weak
1926 symbols; GNU ld also supports weak symbols in the a.out format. (There
1927 is also now support for other GNU ld extensions in ELF. Use the
1928 `--with-elf' option to configure to indicate you have ELF, and
1929 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1930 of many files which contained only symbol aliases, reducing the size of
1931 the source and the compiled library; many other files were renamed to
1932 less cryptic names previously occupied by the symbol alias files.
1933 There is a new header file <elf.h> for programs which operate on
1934 files in the ELF format.
1936 * Converted to Autoconf version 2, so `configure' has more options.
1937 Run `configure --help' to see the details.
1939 * The library can now be configured to build profiling, highly-optimized
1940 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1941 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1942 `configure' enable building these extra libraries. The shared library is
1943 built by default when using both ELF and GNU ld. When shared libraries
1944 are enabled, the new library `-ldl' is available for arbitrary run-time
1945 loading of shared objects; its interface is defined in <dlfcn.h>. The
1946 new header file <link.h> gives access to the internals of the run-time
1947 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1948 application of same name on other systems and it provides information
1949 about dynamically linked binaries.
1951 * The C library now provides the run-time support code for profiling
1952 executables compiled with `-pg'. Programs can control the profiling code
1953 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1954 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1955 the support for this file format was contributed by David Mosberger-Tang.
1957 * The math code has been replaced with a math library based on fdlibm from
1958 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1959 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1960 functions. The math functions now reside in a separate library, so
1961 programs using them will need to use `-lm' their linking commands.
1963 * John C. Bowman contributed optimized ix87 assembler inline functions.
1965 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1966 mechanism similar to that found in Solaris 2. This is now used for the
1967 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1968 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1969 file controls what services are used for each individual database. This
1970 works by loading shared libraries with names specified in `nsswitch.conf',
1971 so service modules can be changed or added at any time without even
1972 relinking any program. Currently there are the file, db, and NIS based
1973 NSS services available.
1975 * The new functions `strtoq' and `strtouq' parse integer values from
1976 strings, like `strtol' and `strtoul', but they return `long long int' and
1977 `unsigned long long int' values, respectively (64-bit quantities).
1979 * The new functions `strtof' and `strtold' parse floating-point values from
1980 strings, like `strtod', but they return `float' and `long double' values,
1981 respectively (on some machines `double' and `long double' are the same).
1983 * Ulrich Drepper has contributed new implementations of the floating-point
1984 printing and reading code used in the `printf' family of functions and
1985 `strtod', `strtof', and `strtold'. These new functions are perfectly
1986 accurate, and much faster than the old ones.
1988 * The implementation of the POSIX locale model was completely rewritten by
1989 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1990 to compile the POSIX locale definition.
1992 * The former dummy implementations of the strcoll and strxfrm function are
1993 now replaced by fully functional code contributed by Ulrich Drepper. The
1994 collation information comes from the POSIX locale definitions.
1996 * The new header <langinfo.h> defines an interface for accessing
1997 various locale-dependent data (using the locale chosen with `setlocale').
1999 * Ulrich Drepper has contributed a new suite of functions for operation on
2000 wide-character and multibyte-character strings, in <wchar.h>;
2001 and classification and case conversion of wide characters, in <wctype.h>.
2002 These new functions are conforming to the ISO C, Amendement 1 specification.
2004 * There is now a second implementation of the standard I/O library available.
2005 It comes from GNU libg++ as was written by Per Bothner, heavily modified
2006 by Hongjiu Lu and made thread safe by Ulrich Drepper.
2008 * You can now use positional parameter specifications in format strings
2009 for the `printf' and `scanf' families of functions. For example,
2010 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
2011 ``Number 6, Mr Jones''. This is mainly useful when providing different
2012 format strings for different languages, whose grammars may dictate
2013 different orderings of the values being printed. To support this
2014 feature, the interface for `register_printf_handler' has changed; see
2015 the header file <printf.h> for details.
2017 * The `printf' and `scanf' families of functions now understand a new
2018 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
2019 to group numbers as indicated by the locale; for `scanf' and friends, this
2020 says to accept as valid only a number with all the proper grouping
2021 separators in the right places. In the default "C" locale, numbers are
2022 not grouped; but locales for specific countries will define the usual
2023 conventions (i.e. separate thousands with `,' in the US locale).
2025 * The pgrp functions have been regularized, slightly incompatibly but much
2026 less confusingly. The core functions are now `getpgid' and `setpgid',
2027 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
2028 argument) and BSD `setpgrp' (identical to `setpgid') functions are
2029 provided for compatibility. There is no longer an incompatible `getpgrp'
2030 with an argument declared under _BSD_SOURCE; no BSD code uses it.
2032 * The new header file <fts.h> and suite of functions simplify programs that
2033 operate on directory trees. This code comes from 4.4 BSD.
2035 * The resolver code has been updated from the BIND 4.9.5-P1 release.
2036 Parts of the code were heavily modified by Ulrich Drepper to fit in the
2037 NSS scheme used in glibc.
2039 * There is a new malloc debugging hook `__memalign_hook'.
2041 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
2042 `unsigned int' in <sys/types.h>. These are for compatibility only and
2043 their use is discouraged.
2045 * The `-lmcheck' library to enable standard malloc debugging hooks is now
2046 done differently, so that it works even without GNU ld.
2048 * New function `euidaccess' checks allowed access to a file like `access',
2049 but using the effective IDs instead of the real IDs.
2051 * The time zone data files have been updated for the latest and greatest
2052 local time conventions of the countries of the world.
2054 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
2057 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
2058 for formatting floating-point numbers. They are provided only for
2059 compatibility; new programs should use `sprintf' instead. There are
2060 also equivalent function for the `long double' floating-point type and
2061 all functions also exist in a reentrant form.
2063 * The new auxiliary library `-lutil' from 4.4 BSD contains various
2064 functions for maintaining the login-record files (primarily of use to
2065 system programs such as `login'), and convenient functions for
2066 allocating and initializing a pseudo-terminal (pty) device.
2068 * Ulrich Drepper has contributed new support for System V style
2069 shared memory and IPC on systems that support it.
2071 * Ulrich Drepper has contributed several miscellaneous new functions found
2072 in System V: The `hsearch' family of functions provide an effective
2073 implementation of hash tables; `a64l' and `l64a' provide a very simple
2074 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
2077 * Ulrich Drepper has contributed new reentrant counterparts for the
2078 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
2080 * Ulrich Drepper has contributed new, highly-optimized versions of several
2081 string functions for the i486/Pentium family of processors.
2083 * Ulrich Drepper has updated the Linux-specific code, based largely
2084 on work done in Hongjiu Lu's version of GNU libc for Linux.
2085 The GNU library now supports Linux versions 2.0.10 and later,
2086 using the ELF object file format (i[3456]86-*-linux).
2088 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
2090 * David Mosberger-Tang and Richard Henderson have ported the C library
2091 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
2092 dynamic linking support for ELF/Alpha.
2094 * Richard Henderson contributed several Alpha optimized assembler function
2095 for arithmetic and string handling.
2097 * Ulrich Drepper has contributed a new set of message catalog functions to
2098 support multiple languages using the <libintl.h> interface, for use with
2099 his new package GNU gettext. Translation volunteers have contributed
2100 catalogs of the library's messages in Spanish, German, and Korean.
2102 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2103 program and the `catgets' function for reading the catalog files it
2104 creates. (The <libintl.h> interface is preferred; we include the
2105 <nl_types.h> interface using `catgets' only for source compatibility with
2106 programs already written to use it.)
2108 * New header file <values.h> gives SVID-compatible names for <limits.h>
2111 * Various new macros, declarations, and small header files for compatibility
2114 * New function `group_member' is a convenient way to check if a process has
2115 a given effective group ID.
2117 * When using GCC 2.7 and later, the socket functions are now declared in a
2118 special way so that passing an argument of type `struct sockaddr_in *',
2119 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2120 `struct sockaddr *' type, does not generate a type-clash warning.
2122 * New function `error' declared in header file <error.h> is a convenient
2123 function for printing error messages and optionally exiting; this is the
2124 canonical function used in GNU programs. The new functions `err', `warn',
2125 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2126 doing the same thing.
2128 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2129 POSIX.2 `glob' function to do ~ and {...} expansion.
2131 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2132 `clearenv' which is used in POSIX.9 is also available.
2134 * New function `getsid' returns session ID number on systems that support it.
2136 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2137 files <db.h> and <mpool.h> provide a rich set of functions for several
2138 types of simple databases stored in memory and in files, and <ndbm.h> is
2139 an old `ndbm'-compatible interface using the `db' functions. Link with
2140 `-ldb' to get these functions.
2142 * New macro `strdupa' copies a string like `strdup', but uses local stack
2143 space from `alloca' instead of dynamic heap space from `malloc'.
2145 * New function `strnlen' is like `strlen' but searches only a given maximum
2146 number of characters for the null terminator. `stpncpy', `strndup' and
2147 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2150 * New function `statfs' in header <sys/statfs.h>.
2152 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2153 provide convenient functions for operating on blocks of null-terminated
2156 * A new suite of functions in <utmp.h> handle all the details of reading
2157 and writing the utmp file.
2159 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2162 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2163 completely POSIX compliant and also implemented the extended functionality
2164 to handle alternate digit representation and alternate era date formats.
2166 * Ulrich Drepper provided an implementation of the `strptime' function
2167 defined in XPG4.2 which transforms a string into a `struct tm' value.
2169 * Paul Eggert provided the tzselect shell script as part of the timezone
2170 code. The shell script makes it easy to select the correct timezone
2173 * The implementation of the malloc family of functions is completely replaced
2174 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2175 The implementation uses the mmap function (if available) and it is
2176 optimized for the use in multi threaded programs.
2178 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2179 functions. This new functionality is usable by specifying a special
2180 salt string and it is compatible with implementation on *BSD systems.
2182 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2183 `getsubopt' to handle second level command line options, `bsd_signal'
2184 to access BSD style `signal' functionality, the obsolete `regexp' style
2187 * the `lchown' function is available on system which support this
2190 * The implementation of the shadow password handling function was contributed
2193 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2195 * POSIX.1g support was added. The <sys/select.h> header is available,
2196 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2197 implementation of `getaddrinfo'.
2201 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2203 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2204 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2206 * The new function `daemon' from 4.4 BSD is useful for server programs that
2207 want to put themselves in the background.
2209 * Joel Sherrill has contributed support for several standalone boards that
2210 run without an operating system.
2212 * `printf', `scanf' and friends now accept a `q' type modifier for long
2213 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2215 * All of the code taken from BSD (notably most of the math and networking
2216 routines) has been updated from the BSD 4.4-Lite release.
2218 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2220 * The new functions `getdomainname' and `setdomainname' fetch or change the
2221 YP/NIS domain name. These are system calls which exist on systems which
2224 * The time zone data files have been updated for the latest international
2227 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2228 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2232 * The C library now includes support for Sun RPC, from Sun's free
2233 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2234 are included. (There is still no support for YP.)
2236 * Tom Quinn has contributed a port of the C library to SGI machines running
2237 Irix 4 (mips-sgi-irix4).
2239 * The new `lockf' function is a simplified interface to the locking
2240 facilities of `fcntl', included for compatibility.
2242 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2244 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2246 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2249 * The error message printed by `assert' for a failed assertion now includes
2250 the name of the program (if using GNU ld) and the name of the calling
2251 function (with versions of GCC that support this).
2253 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2255 * The library now includes the <sys/mman.h> header file and memory
2256 management functions `mmap', `munmap', `mprotect', `msync', and
2257 `madvise', on systems that support those facilities.
2259 * The interface for `mcheck' has changed slightly: the function called to
2260 abort the program when an allocation inconsistency is detected now takes
2261 an argument that indicates the type of failure. The new function
2262 `mprobe' lets you request a consistency check for a particular block at
2263 any time (checks are normally done only when you call `free' or `realloc'
2266 * It is now possible to easily cross-compile the C library, building on one
2267 system a library to run on another machine and/or operating system. All
2268 you need to do is set the variable `HOST_CC' in `configparms' to the
2269 native compiler for programs to run on the machine you are building on (a
2270 few generator programs are used on Unix systems); set `CC' to the
2273 * The new function `fexecve' (only implemented on the GNU system) executes
2274 a program file given a file descriptor already open on the file.
2278 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2279 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2281 * You can set the variable `libprefix' in `configparms' to specify a prefix
2282 to be prepended to installed library files; this makes it easy to install
2283 the GNU C library to be linked as `-lgnuc' or whatever.
2285 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2286 copies a limited number of characters from a string, and returns the
2287 address of the last character written.
2289 * You no longer need to check for whether the installed `stddef.h' is
2290 compatible with the GNU C library. configure now checks for you.
2292 * You can now define a per-stream `fileno' function to convert the
2293 stream's cookie into an integral file descriptor.
2295 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2296 allocates zero bytes of storage, and returns a unique pointer which
2297 you can pass to `realloc' or `free'. The behavior is undefined if
2298 you dereference this pointer.
2300 * The C library now runs on Sony NEWS m68k machines running either
2301 NewsOS 3 or NewsOS 4.
2303 * The new `syscall' function is a system-dependent primitive function
2304 for invoking system calls. It has the canonical behavior on Unix
2305 systems, including unreliable return values for some calls (such as
2306 `pipe', `fork' and `getppid').
2308 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2309 to `EAGAIN', which is the preferred name. On systems whose kernels
2310 use two distinct codes, the C library now translates EWOULDBLOCK to
2311 EAGAIN in every system call function.
2315 * The GNU C Library Reference Manual is now distributed with the library.
2316 `make dvi' will produce a DVI file of the printed manual.
2317 `make info' will produce Info files that you can read on line using C-h i
2318 in Emacs or the `info' program.
2319 Please send comments on the manual to bug-glibc-manual@gnu.org.
2321 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2323 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2325 * Jason Merrill has contributed a port to the Sequent Symmetry running
2326 Dynix version 3 (i386-sequent-dynix).
2328 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2329 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2331 * New function `memory_warnings' lets you arrange to get warnings when
2332 malloc is running out of memory to allocate, like Emacs gives you.
2334 * The C library now contains the relocating allocator used in Emacs 19 for
2335 its editing buffers. This allocator (ralloc) minimizes allocation
2336 overhead and fragmentation by moving allocated regions around whenever it
2337 needs to. You always refer to a ralloc'd region with a "handle" (a
2338 pointer to a pointer--an object of type `void **').
2340 * There is a new `printf' format: `%m' gives you the string corresponding
2341 to the error code in `errno'.
2343 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2344 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2345 pass, the `a' modifier says to fill in a `char **' you pass with a
2348 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2349 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2350 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2352 * `mkstemp' is a traditional Unix function to atomically create and open a
2353 uniquely-named temporary file.
2357 * The standard location for the file that says what the local timezone is
2358 has changed again. It is now `/usr/local/etc/localtime' (or more
2359 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2361 * The distribution no longer contains any files with names longer than 14
2364 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2365 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2367 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2371 * The configuration process has changed quite a bit. The `configure'
2372 script is now used just like the configuration scripts for other GNU
2373 packages. The `sysdeps' directory hierarchy is much rearranged.
2374 The file `INSTALL' explains the new scheme in detail.
2376 * The header files no longer need to be processed into ANSI C and
2377 traditional C versions. There is just one set of files to install, and
2378 it will work with ANSI or old C compilers (including `gcc -traditional').
2380 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2381 MIPS DECStation running Ultrix 4.
2383 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2384 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2385 made itself into a shared library.
2387 * Yet further improved support for the i386, running 4.3 BSD-like systems
2388 (such as Mach 3 with the Unix single-server), or System V.
2390 * New function `strncasecmp' to do case-insensitive string comparison
2391 with limited length.
2393 * New function `strsep' is a reentrant alternative to `strtok'.
2395 * New functions `scandir' and `alphasort' for searching directories.
2397 * New function `setenv' is a better interface to `putenv'.
2399 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2400 function for traversing a directory tree.
2402 * The GNU obstack package is now also part of the C library.
2403 The new function `open_obstack_stream' creates a stdio stream that
2404 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2405 formatted output directly to an obstack.
2407 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2408 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2410 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2412 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2413 things to your strings.
2415 * There are some new test programs: test-fseek, testmb, and testrand.
2417 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2418 These ports are not finished, but are a good starting place for really
2419 supporting those systems.
2421 * `/etc/localtime' is now the standard location for the file that says what
2422 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2423 This follows the general principle that `/etc' is the place for all local
2424 configuration files.
2426 * The C library header files now use `extern "C"' when used by the C++
2427 compiler, so the C library should now work with C++ code.
2429 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2430 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2433 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2434 function which uses the `merge sort' algorithm, and is said to be
2435 significantly faster than the old GNU `qsort' function. Merge sort is
2436 now the standard `qsort' function. The new algorithm can require a lot
2437 of temporary storage; so, the old sorting function is called when the
2438 required storage is not available.
2440 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2441 provides the Unix `crypt' function, plus some other entry points.
2443 * The code and header files taken from 4.4 BSD have been updated with the
2444 latest files released from Berkeley.
2446 ----------------------------------------------------------------------
2447 Copyright information:
2449 Copyright (C) 1992-2014 Free Software Foundation, Inc.
2451 Permission is granted to anyone to make or distribute verbatim copies
2452 of this document as received, in any medium, provided that the
2453 copyright notice and this permission notice are preserved,
2454 thus giving the recipient permission to redistribute in turn.
2456 Permission is granted to distribute modified versions
2457 of this document, or of portions of it,
2458 under the above conditions, provided also that they
2459 carry prominent notices stating who last changed them.
2462 version-control: never
projects / thirdparty / glibc.git / blob