1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2013 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:
12 156, 431, 832, 10278, 13028, 13982, 13985, 14029, 14155, 14547, 14699,
13 14910, 15048, 15218, 15277, 15308, 15362, 15400, 15427, 15522, 15531,
14 15532, 15608, 15609, 15610, 15632, 15640, 15670, 15672, 15680, 15681,
15 15723, 15734, 15735, 15736, 15748, 15749, 15754, 15760, 15764, 15797,
16 15825, 15844, 15847, 15849, 15855, 15856, 15857, 15859, 15867, 15886,
17 15887, 15890, 15892, 15893, 15895, 15897, 15905, 15909, 15919, 15921,
18 15923, 15939, 15948, 15963, 15966, 15988, 16032, 16034, 16036, 16041,
21 * CVE-2012-4412 The strcoll implementation caches indices and rules for
22 large collation sequences to optimize multiple passes. This cache
23 computation may overflow for large collation sequences and may cause a
24 stack or buffer overflow. This is now fixed to use a slower algorithm
25 which does not use a cache if there is an integer overflow.
27 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
28 rules for large collation sequences to optimize multiple passes and falls
29 back to alloca if malloc fails, resulting in a possible stack overflow.
30 The implementation now falls back to an uncached collation sequence lookup
33 * CVE-2013-4788 The pointer guard used for pointer mangling was not
34 initialized for static applications resulting in the security feature
35 being disabled. The pointer guard is now correctly initialized to a
36 random value for static applications. Existing static applications need
37 to be recompiled to take advantage of the fix (bug 15754).
39 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
40 to the d_name member of struct dirent, or omit the terminating NUL
41 character. (Bugzilla #14699).
43 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
44 aligned_alloc functions could allocate too few bytes or corrupt the
45 heap when passed very large allocation size values (Bugzilla #15855,
48 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
49 for AF_INET6 has been fixed (Bugzilla #16072).
51 * New locales: ak_GH, cmn_TW, hak_TW, lzh_TW, nan_TW, quz_PE, pap_AW, pap_CW,
54 * Substantially revised locales: gd_GB, ht_HT
56 * The LC_ADDRESS field was updated to support country_car for almost all
59 * ISO 1427 definitions were updated.
61 * ISO 3166 definitions were updated.
63 * The localedef utility now supports --big-endian and --little-endian
64 command-line options to generate locales for a different system from that
65 for which the C library was built.
67 * The configure option --disable-versioning has been removed. Builds with
68 --disable-versioning had not worked for several years.
70 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
71 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
73 * SystemTap probes for malloc have been introduced.
75 * Support for powerpc64le has been added.
79 * The following bugs are resolved with this release:
81 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
82 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
83 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
84 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
85 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
86 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
87 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
88 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
89 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
90 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
91 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
92 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
93 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
96 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
97 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
98 Distributions can re-enable building and using pt_chown via the new configure
99 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
100 considerable security risks and should only be used if the distribution
101 understands and accepts the risks.
103 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
106 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
107 fixed (Bugzilla #15330).
109 * Add support for calling C++11 thread_local object destructors on thread
110 and program exit. This needs compiler support for offloading C++11
111 destructor calls to glibc.
113 * Improved worst case performance of libm functions with double inputs and
116 * Support for priority inherited mutexes in pthread condition variables on
117 non-x86 architectures.
119 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
121 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
123 * Optimized string functions for ARM. Implemented by Will Newton and
126 * Optimized libm functions for SPARC. Implemented by David S. Miller.
128 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
131 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
132 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
134 * Added a benchmark framework to track performance of functions in glibc.
136 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
137 It is based on draft TS 18661 and currently enabled as a GNU extension.
139 * On Linux, the clock function now uses the clock_gettime system call
140 for improved precision, rather than old times system call.
142 * Added new API functions pthread_getattr_default_np and
143 pthread_setattr_default_np to get and set the default pthread
144 attributes of a process.
146 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
147 This may improve lock scaling of existing programs on TSX capable systems.
148 When the --enable-lock-elision=yes parameter is specified at configure
149 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
152 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
153 availability). Implemented by Ryan S. Arnold.
155 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
159 * The following bugs are resolved with this release:
161 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
162 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
163 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
164 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
165 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
166 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
167 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
168 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
169 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
170 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
171 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
172 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
173 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
174 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
175 14879, 14889, 14893, 14898, 14914.
177 * Optimization of memcpy for MIPS.
179 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
180 EMFILE has been fixed (Bugzilla #14889).
182 * The add-on ports collection is now distributed in the "ports" subdirectory
183 of the main GNU C Library distribution, rather than separately.
185 * Port to ARM AArch64 contributed by Linaro.
187 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
188 Optimized versions of memcpy, memset, and memcmp added for System z10 and
190 Implemented by Andreas Krebbel.
192 * The new function secure_getenv allows secure access to the environment,
193 returning NULL if running in a SUID/SGID process. This function replaces
194 the internal function __secure_getenv.
196 * SystemTap static probes have been added into the dynamic linker.
197 Implemented by Gary Benson.
199 * Optimizations of string functions strstr, strcasestr and memmem.
200 Implemented by Maxim Kuvyrkov.
202 * The minimum Linux kernel version that this version of the GNU C Library
203 can be used with is 2.6.16.
205 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
206 powerpc POWER7. Implemented by Will Schmidt.
208 * New configure option --disable-nscd builds the C library such that it
209 never attempts to contact the Name Service Caching Daemon (nscd).
210 New configure option --disable-build-nscd avoids building nscd itself;
211 this is the default if --disable-nscd is used.
213 * Improved support for cross-compilation, including cross-testing and
214 bootstrap builds without a previously built glibc.
216 * Several testsuite tests are now able to test multiple IFUNC variants of an
217 interface, rather than just testing the one that would be chooen by
220 * New configure options --with-bugurl and --with-pkgversion, for
221 distributors to use to embed their bug-reporting and package version
222 information in --help and --version output.
224 * The ttyname and ttyname_r functions on Linux now fall back to searching for
225 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
226 allows creation of chroots without the procfs mounted on /proc.
228 * The `crypt' function now fails if passed salt bytes that violate the
229 specification for those values. On Linux, the `crypt' function will
230 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
231 enabled, and fail on encrypted strings using the MD5 or DES algorithm
232 when the mode is enabled.
234 * The `clock_*' suite of functions (declared in <time.h>) is now available
235 directly in the main C library. Previously it was necessary to link with
236 -lrt to use these functions. This change has the effect that a
237 single-threaded program that uses a function such as `clock_gettime' (and
238 is not linked with -lrt) will no longer implicitly load the pthreads
239 library at runtime and so will not suffer the overheads associated with
240 multi-thread support in other code such as the C++ runtime library.
242 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
247 * The following bugs are resolved with this release:
249 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
250 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
251 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
252 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
253 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
254 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
255 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
256 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
257 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
258 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
259 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
260 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
261 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
262 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
263 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
264 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
265 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
266 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
267 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
268 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
269 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
270 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
273 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
274 configuring glibc with:
275 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
276 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
277 Implemented by H.J. Lu.
281 + define static_assert
283 + do not declare gets
285 + declare at_quick_exit and quick_exit also for ISO C11
287 + aligned_alloc. NB: The code is deliberately allows the size parameter
288 to not be a multiple of the alignment. This is a moronic requirement
289 in the standard but it is only a requirement on the caller, not the
294 + uchar.h support added
296 + CMPLX, CMPLXF, CMPLXL added
298 Implemented by Ulrich Drepper.
300 * Support for the IA-64 has been moved to ports.
302 * Remove support for anything but ELF binary format
304 * Checking versions of poll, ppoll added.
305 Implemented by Ulrich Drepper.
307 * More generic and 64-bit performance optimizations to math functions.
308 Implemented by Ulrich Drepper.
310 * New configure option --enable-obsolete-rpc makes the deprecated RPC
311 headers and functions available at compile time as they were before
312 version 2.14. This option will be removed at some time in the future
313 after the TI-RPC library becomes fully sufficient for the needs of
314 existing applications.
316 * Compatibility code for Linux kernel versions before 2.4 has been removed.
317 Note that glibc is not expected to work with any Linux kernel version
320 * New header <sys/auxv.h> and function getauxval allowing easy access to
321 the AT_* key-value pairs passed from the Linux kernel. The header also
322 defines the HWCAP_* bits associated with the AT_HWCAP key.
324 * New locales: mag_IN
326 * New configure option --enable-systemtap builds SystemTap static probes
327 into libc for setjmp and longjmp and into libpthread for various operations.
328 So far the setjmp/longjmp probes and some of the libpthread probes are
329 provided only for i*86 and x86_64.
330 Implemented by Roland McGrath and Rayson Ho.
332 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
334 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
337 * More optimized functions for SPARC. Implemented by David S. Miller.
339 * Improved support for cross-compilation, especially bootstrap builds
340 without a previously built glibc.
342 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
343 Chris Metcalf from Tilera.
345 * Support for the old ARM ABI has been removed from ports. Only the EABI is
346 now supported for ARM processors.
348 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
349 as the name of the dynamic linker, to distinguish it from the
350 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
352 * Support for CRIS has been removed from ports.
354 * A new class of installed header has been documented for low-level
355 platform-specific functionality. PowerPC added the first instance with a
356 function to provide time base register access. Contributed by Tulio
357 Magno Quites Machado Filho.
359 * ix86 configurations now install header files that are consistent with
360 what x86-64 configurations install. These same header files can be used
361 for -m32, -m64, or -mx32 builds.
362 Contributed by H.J. Lu.
364 * Math library bug fixes. A thorough audit of all open math library bugs was
365 conducted by Joseph Myers. Significant progress was made on many math
366 library bugs resulting in more accurate exceptions and function results.
367 Many thanks to all those that contributed including Andreas Jaeger for his
368 patch review and work on the x87 trigonometric instruction issues.
370 * Timezone data is no longer installed. Timezone-related binaries and scripts
371 will continue to be installed. Users should obtain their timezone data from
372 their distribution provider or from the tzdata package at
373 <ftp://munnari.oz.au/pub/>.
377 * The following bugs are resolved with this release:
379 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
380 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
381 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
382 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
383 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
384 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
385 13484, 13506, 13515, 13523, 13524, 13538, 13540
387 * New program pldd to list loaded object of a process
388 Implemented by Ulrich Drepper.
390 * Add nss_db support back to glibc. No more dependency on Berkeley db
391 and support for initgroups lookups.
392 Implemented by Ulrich Drepper.
394 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
395 Contributed by HJ Lu.
397 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
398 Contributed by HJ Lu.
400 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
401 on x86-32 and x86-64.
402 Contributed by Liubov Dmitrieva.
404 * Optimized strchr and strrchr for SSE on x86-32.
405 Contributed by Liubov Dmitrieva.
407 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
408 for x86-64 and x86-32.
409 Contributed by Liubov Dmitrieva.
411 * New interfaces: scandirat, scandirat64
412 Implemented by Ulrich Drepper.
414 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
415 Implemented by Ulrich Drepper.
417 * nscd now also caches the netgroup database.
418 Implemented by Ulrich Drepper.
420 * Integrate libm with gcc's -ffinite-math-only option.
421 Implemented by Ulrich Drepper.
423 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
424 to math functions. Implemented by Ulrich Drepper.
426 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
427 Implemented by Ulrich Drepper.
429 * New Linux interfaces: process_vm_readv, process_vm_writev
431 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
432 Implemented by Ulrich Drepper.
434 * Optimized nearbyint and strcasecmp for PPC.
435 Implemented by Adhemerval Zanella.
437 * New locales: bho_IN, unm_US, es_CU, ta_LK
441 * The following bugs are resolved with this release:
443 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
444 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
445 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
446 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
447 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
448 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
449 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
450 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
451 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
452 12795, 12811, 12813, 12814, 12841
454 * The RPC implementation in libc is obsoleted. Old programs keep working
455 but new programs cannot be linked with the routines in libc anymore.
456 Programs in need of RPC functionality must be linked against TI-RPC.
457 The TI-RPC implementation is IPv6 enabled and there are other benefits.
459 Visible changes of this change include (obviously) the inability to link
460 programs using RPC functions without referencing the TI-RPC library and the
461 removal of the RPC headers from the glibc headers.
462 Implemented by Ulrich Drepper.
464 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
465 syncfs, setns, sendmmsg
467 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
468 yue_HK, lij_IT, mhr_RU
470 * New encodings: CP770, CP771, CP772, CP773, CP774
472 * New program sotruss to trace calls through PLTs
473 Implemented by Ulrich Drepper.
475 * The malloc hook implementation is marked deprecated and will be removed
476 from the default implementation in the next version. The design never
477 worked ever since the introduction of threads. Even programs which do
478 not create threads themselves can use multiple threads created internally.
482 * The following bugs are resolved with this release:
484 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
485 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
486 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
487 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
490 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
492 * POWER7 optimizations: memset, memcmp, strncmp
494 * New optimized string functions for x86-64: strnlen (SSE2),
495 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
496 Implemented by Ulrich Drepper.
500 * The following bugs are resolved with this release:
502 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
503 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
504 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
505 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
506 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
507 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
508 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
509 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
511 * New interfaces: pthread_getname_np, pthread_setname_np
513 * New Linux interface: recvmmsg
515 * STT_GNU_IFUNC implemented for Sparc by David Miller.
517 * The dynamic linker now recognizes supported ABI versions from the
518 EI_ABIVERSION field in the ELF header.
519 Implemented by Ulrich Drepper.
521 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
522 will not be used to fill in password fields in the passwd.byname replies.
523 Instead it is used to synthesize the shadow.byname table, should it be
524 missing. This is a useful mode in some installations involving Solaris.
525 Implemented by Ulrich Drepper.
527 * New locales: kok_IN, sq_MK, cv_RU
531 * The following bugs are resolved with this release:
533 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
534 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
535 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
536 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
537 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
538 10789, 10817, 10823, 10840, 10847
540 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
542 Implemented by Ulrich Drepper.
544 * Checking version of longjmp added that fails if an uninitialized stack
545 frame would be created. Implemented by Ulrich Drepper.
547 * STT_GNU_IFUNC is now supported in static executables.
548 Implemented by H.J. Lu.
550 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
552 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
553 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
554 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
555 Contributed by H.J. Lu.
557 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
558 Implemented by Ulrich Drepper.
560 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
562 Contributed by H.J. Lu.
564 * Support for fma instruction in AVX on x86-64.
565 Implemented by H.J. Lu and Ulrich Drepper.
567 * AVX support in x86-64 auditing support in ld.so.
568 Implemented by H.J. Lu.
570 * STB_GNU_UNIQUE support added.
571 Implemented by Ulrich Drepper.
573 * Implement second fallback mode for optimized DNS lookup for even more
574 broken environments. If two requests from the same port are not
575 handled correctly close the socket and open a new one before sending
576 the second request. The 'single-request-reopen' option in /etc/resolv.conf
577 can be used to select this mode right away, instead of rediscovering the
578 necessity is every process again.
579 Implemented by Ulrich Drepper.
581 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
582 Implemented by Adam Tkac.
584 * Optimized iconv conversions for S390x.
585 Implemented by Andreas Krebbel.
587 * Using condvars with PI mutexes is now more efficient due to kernel
588 support for requeueing to PI futexes. NPTL support added for x86-64.
589 Implemented by Ulrich Drepper.
591 * New locales: ps_AF, my_MM
595 * The following bugs are resolved with this release:
597 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
598 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
599 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
600 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
601 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
603 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
604 Implemented by Ulrich Drepper.
606 * New Linux interfaces: accept4, fallocate, fallocate64.
607 Implemented by Ulrich Drepper.
609 * Correct declarations of string function when used in C++ code. This
610 could lead to compile errors for invalid C++ code.
612 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
615 * New POSIX 2008 interface: psiginfo
616 Implemented by Ulrich Drepper.
618 * New ISO C++1x interfaces: quick_exit, at_quick_exit
619 Implemented by Ulrich Drepper.
621 * Support for selecting between multiple function definitions at runtime
622 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
624 * The libcrypt library can now use the hash function implementations in
625 NSS. Implemented by Ulrich Drepper.
627 * The malloc implementation can be compiled to be less memory efficient
628 but higher performing in multi-threaded programs.
629 Implemented by Ulrich Drepper.
631 * New locales: nan_TW@latin, ks_IN
633 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
634 Implemented by Ulrich Drepper.
636 * Extended printf hook support. It is possible to use user-defined types
637 and extend existing format specifiers.
638 Implemented by Ulrich Drepper.
640 * Handling for group shadow files has been added.
641 Implemented by Ulrich Drepper.
643 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
644 servers (the case, e.g., for some people using the built-in DNS
645 server in ADSL modems/routers). There is a once-per-process timeout
646 in case of a broken server. To avoid it, users can run nscd or put
647 'options single-request' in /etc/resolv.conf.
648 Implemented by Ulrich Drepper.
652 * The following bugs are resolved with this release:
654 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
655 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
656 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
657 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
658 6968, 6974, 6980, 6995, 7008, 7009, 7029
660 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
661 up at the same time. Implemented by Ulrich Drepper.
663 * TLS descriptors for LD and GD on x86 and x86-64.
664 Implemented by Alexandre Oliva.
666 * getaddrinfo now handles DCCP and UDPlite.
667 Implemented by Ulrich Drepper.
669 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
670 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
671 Implemented by Ulrich Drepper.
673 * New implementation of memmem, strstr, and strcasestr which is O(n).
674 Implemented by Eric Blake.
676 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
678 * Implement "e" option for popen to open file descriptor with the
679 close-on-exec flag set. Implemented by Ulrich Drepper.
681 * Implement "b" mode for fmemopen. In this mode writes writes don't
682 implicitly add a NUL byte and seeks from the end of the buffer really
683 use the buffer end, not the string length as the basis.
684 Implemented by Ulrich Drepper.
686 * Many functions, exported and internal, now atomically set the close-on-exec
687 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
689 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
691 Implemented by Pravin Satpute.
693 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
697 * The following bugs are resolved with this release:
699 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
700 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
701 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
702 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
703 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
704 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
705 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
707 * New locales: bo_CN, bo_IN, shs_CA.
709 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
711 * Sorting rules for some Indian languages (Devanagari and Gujarati).
712 Implemented by Pravin Satpute.
714 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
716 * nscd caches now all timeouts for DNS entries
717 Implemented by Ulrich Drepper.
719 * nscd is more efficient and wakes up less often.
720 Implemented by Ulrich Drepper.
722 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
723 vdprintf, and obstack_vprintf.
724 Implemented by Jakub Jelinek.
726 * Faster memset for x86-64.
727 Implemented by Harsha Jagasia and H.J. Lu.
729 * Faster memcpy on x86.
730 Implemented by Ulrich Drepper.
732 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
733 Implemented by Ulrich Drepper.
735 * Faster sqrt and sqrtf implemention for some PPC variants.
736 Implemented by Steven Munroe.
740 * The following bugs are resolved with this release:
742 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
743 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
744 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
745 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
746 5071, 5103, 5104, 5112, 5113, 5184, 5186
748 * More checking functions: fread, fread_unlocked, open*, mq_open.
749 Implemented by Jakub Jelinek and Ulrich Drepper.
751 * Extend fortification to C++. Implemented by Jakub Jelinek.
753 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
754 by not recognizing 'a' as a modifier when those specs are requested.
755 Implemented by Jakub Jelinek.
757 * PPC optimizations to math and string functions.
758 Implemented by Steven Munroe.
760 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
761 options to be passed. Implemented by Ulrich Drepper.
763 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
765 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
766 Implemented by Ulrich Drepper.
768 * Handle private futexes in the NPTL implementation.
769 Implemented by Jakub Jelinek and Ulrich Drepper.
771 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
772 Implemented by Roland McGrath and Ulrich Drepper.
774 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
776 * SHA-256 and SHA-512 based password encryption.
777 Implemented by Ulrich Drepper.
779 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
780 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
783 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
784 Implemented by Ulrich Drepper.
788 * The following bugs are resolved with this release:
790 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
791 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
792 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
793 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
794 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
795 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
796 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
799 * New Linux interfaces: epoll_pwait, sched_getcpu.
801 * New generic interfaces: strerror_l.
803 * nscd can now cache the services database. Implemented by Ulrich Drepper.
807 * The following bugs are resolved with this release:
809 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
810 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
811 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
812 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
813 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
814 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
815 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
816 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
817 3225, 3251, 3252, 3253, 3273
819 * For Linux, the sorting of addresses returned by getaddrinfo now also
820 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
821 Implemented by Ulrich Drepper.
823 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
824 Implemented by Ulrich Drepper.
826 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
828 * New iconv module for MIK. Contributed by Alexander Shopov.
830 * For sites with broken group and/or passwd database, the auto-propagate
831 option of nscd can prevent creating ID lookup entries from the results
832 of a name lookup and vice versa. This usually is no problem but some
833 site might have problems with the default behavior.
834 Implemented by Ulrich Drepper.
836 * Iterating over entire database in NIS can be slow. With the
837 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
838 to trade time for memory. The entire database will be read at once.
839 Implemented by Ulrich Drepper.
841 * The interfaces introduced in RFC 3542 have been implemented by
844 * Support for the new ELF hash table format was added by Ulrich Drepper.
846 * Support for priority inheritance mutexes added by Jakub Jelinek and
849 * Support for priority protected mutexes added by Jakub Jelinek.
851 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
852 or_IN, csb_PL, fy_NL, sr_ME.
856 * More overflow detection functions.
858 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
859 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
861 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
862 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
863 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
864 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
865 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
866 by Masahide Washizawa.
868 * It is now possible to install audit libraries for the dynamic linker using
869 LD_AUDIT. Implemented by Ulrich Drepper.
871 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
872 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
873 For a libc and libpthread that works well on Linux 2.4 kernels, we
874 recommend using the stable 2.3 branch.
876 * The new function open_wmemstream acts like open_memstream,
877 but uses a wchar_t wide character buffer.
879 * The new function ppoll is an improved version of poll, similar to pselect.
881 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
882 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
883 renameat, unlinkat, linkat, symlinkat, readlinkat.
885 * New Linux kernel system calls: unshare,
886 inotify_init, inotify_add_watch, inotify_rm_watch.
888 * The euidaccess function is now also known by the alias eaccess,
889 for compatibility with some other systems.
891 * Timezone data updated to 2006b version.
895 * The following bugs are resolved with this release:
897 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
898 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
899 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
900 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
901 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
902 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
904 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
906 * As of this release, GCC 4 can be used to compile the C Library.
908 * Timezone data updated to 2005m version.
912 * The following bugs are resolved with this release:
914 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
915 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
916 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
917 777, 787, 821, 822, 823, 825
919 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
923 * Support for RFC 3678. Real implementations exist only for Linux so far.
924 Implemented by Ulrich Drepper.
926 * nscd can now cache entries persistently. Expiring entries are reloaded.
927 For speedups the cache can be shared in memory with client processes.
928 Implemented by Ulrich Drepper.
930 * nscd can now perform SELinux checks.
931 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
933 * getaddrinfo queries are now cached. Canonical name lookup is performed
935 Implemented by Ulrich Drepper.
937 * The nothrow function attribute is used when headers are used by gcc when
938 compiling C code. This can avoid significant amounts of exception
941 * The malloc functions perform more error checking and are stricter when
942 it comes to reacting on errors. The default action is to terminate
943 the process after showing an error message. Implemented by Ulrich Drepper.
945 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
946 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
948 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
949 namespaces using the new function dlmopen(). This feature is of course,
950 like most other dynamic loading functionality, not available in statically
951 linked applications. Implemented by Ulrich Drepper.
953 * Low-overhead boundary checking variants of string and some stdio functions
954 were added. These are to be used in conjunction with a gcc patch by
955 Jakub Jelinek which adds calls to these functions if possible.
956 Implemented by Jakub Jelinek and Ulrich Drepper.
958 * Old code for several operating systems and machine architectures that
959 have not been in working condition in a long time have been removed from
960 the main source tree maintained by the GNU C Library's maintainers.
961 These files are now reside in the separate `ports' source module
962 that is usable as an add-on when building the library.
966 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
967 interrogate the dynamic linker, compatible with the Solaris interface.
969 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
970 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
972 * getifaddrs now uses the netlink interface on Linux to get its information.
973 Implemented by Thorsten Kukuk.
975 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
976 Implemented by Ulrich Drepper.
978 * support for non-executable stacks on x86 has been added. Changes mostly
981 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
984 * getaddrinfo now performs destination address selection according to
989 * Thread-safe interfaces for many functions that access locale data
990 were added in version 2.3, but these features were omitted from NEWS.
991 Many functions have variants with an `_l' suffix that take a `locale_t'
992 object as a parameter rather than consulting the current locale.
993 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
994 create and maintain `locale_t' objects. Additionally, the new function
995 `uselocale' sets "the current locale" (as used by functions not so
996 parameterized) set for an individual thread. These features were added
997 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
999 * The functions getresuid, getresgid, setresuid, and setresgid, which
1000 have long been available on Linux, are now declared in <unistd.h>
1001 and are now also available on the Hurd.
1003 * ELF thread-local storage support (TLS) now works on x86-64.
1005 * The new dynamic string token $LIB is expanded in shared library names.
1006 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1008 * Aldy Hernandez contributed complete software floating point support for
1009 PowerPC machines with no FPU.
1011 * fexecve is implemented on Linux.
1013 * The `btowc' function should work at least twice as fast due to
1014 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1016 * With approriate thread add-ons cancelable functions are now implemented
1017 in libc.so as well. No need to call the function in libpthread. This
1018 change allowed to finally disable the incorrect and expensive handling
1019 of weak definition in ld.so.
1021 * Yet more PLT entries in libc.so have been removed. We finally arrived
1022 at the bare minimum. Startup times improved appropriately.
1024 * Support for the new Linux/x86 system call interface was added. The
1025 AT_SYSINFO auxiliary vector entry is recognized and handled.
1029 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1032 * iconv (the program and the interface) now accepts empty names (excluding
1033 options like //TRANSLIT) to mean "use charset of current locale".
1035 * localedef can now transliterate characters in strings which are not in
1036 the provided charmap. The information from the input locale is used.
1038 * Prelinking support was added for ELF targets. This requires additional
1039 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1041 * Read-only stdio streams now use mmap to speed up operation by eliminating
1042 copying and buffer underflows. To use add 'm' to the mode string of
1043 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1045 * The malloc functions were completely rewritten by Wolfram Gloger based
1046 on Doug Lea's malloc-2.7.0.c.
1048 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1049 implementation of regex.
1051 * Bruno Haible upgraded the iconv and locale implementation to support
1054 * Contents of the LC_* and LANG environment variables in the CEN style are
1055 not recognized anymore. It never was used. Change by Ulrich Drepper.
1057 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1058 thread-local storage (TLS) ABI on some platforms.
1059 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1061 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1062 EUC-JISX0213, and TSCII.
1064 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1065 BSD-compatible interface for getting all network interface addresses.
1066 Implementation for IPv4 by Roland McGrath.
1068 * Loading of locale data is faster due to the introduction of a locale
1069 archive. Implemented by Roland McGrath and Ulrich Drepper.
1071 * Startup times are significantly reduced by not using exported functions
1072 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1075 * Steven Munroe contributed a port to PowerPC64/Linux.
1079 * The Hurd now uses the GNU libio implementation of stdio rather than the
1080 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1082 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1083 with the same behavior as the Linux system call of the same name.
1087 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1088 128-bit long double format.
1090 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1091 IBM1161, and IBM1162 charsets.
1093 * Andreas Jaeger contributed a port to x86-64/Linux.
1095 * Peter Bruin contributed a port to PowerPC/Hurd.
1097 * libc functions using I/O streams now can handle wide-oriented streams
1100 * optimizations in the dynamic linker. Binaries created by recent binutils
1101 versions start up quicker due to reduced time spent on relocations.
1103 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1107 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1108 asinh, atanh, j0 for the 128-bit long double format.
1110 * Bruno Haible updated all the code handling Unicode in some form to
1111 support Unicode 3.1.
1113 * Speed of regex for single-byte locales is back to previous levels.
1114 Patch by Isamu Hasegawa.
1116 * Alpha, SPARC, and IA-64 now also using floating stacks.
1118 * Startup time of internationalized applications greatly improved through
1119 iconv cache. Use iconvconfig to generate the cache file.
1120 Contributed by Ulrich Drepper.
1122 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1123 severe performance problems. Patch by David Mosberger.
1125 * The Hurd port got a lot more functionality like AIO, various stdio
1126 extensions, etc. Mainly done by Roland McGrath.
1128 * mtrace can now lookup symbols in shared libraries.
1132 * Intel's IA-64 math library is largely integrated. It provides fast and
1133 accurate implementatations for most basic and standard math functions
1134 in float, double, and long double format.
1136 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1137 and asin for the 96-bit long double format and asin, log, tan for the
1138 128-bit long double format.
1140 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1141 The basic double functions exist today. Contributed by Abraham Ziv
1142 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1143 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1145 * An asynchronous name lookup library was added. The interface is designed
1146 after POSIX AIO. The proposal was circulated beforehand to get comments.
1147 No negative ones came in. Implemented by Ulrich Drepper.
1149 * Port to S390/64bit contributed by Martin Schwidefsky
1150 <schwidefsky@de.ibm.com>.
1152 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1153 of functions for Linux/IA-64.
1155 * The RPC code is now thread safe. Threads can now use the same service
1156 of different services at the same time. Patch by Eric Norum
1157 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1159 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1160 family of functions for Linux/S390.
1162 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1163 of functions for Linux/x86.
1165 * Port to Linux/CRIS contributed by Axis Communications.
1169 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1170 we can now check for namespace violations and missing declarations. The
1171 result is that almost all headers are now Unix-compliant (as defined in
1172 the upcoming XPG6). The negative side is that some programs might need
1173 corrections, too, if they depend on the incorrect form of the headers in
1174 previous versions which defined too many symbols and included too many
1177 * regex now handles multibyte character sets correctly.
1178 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1180 * iconv (the program) does now conform to the upcoming XPG6 and handles
1181 charmaps. Instead of the charset names the path of charmaps can be
1182 provided and the conversion happens based on this data.
1183 Contributed by Ulrich Drepper.
1185 * The locale program now provides detailed information about the installed
1190 only lists the names of the supported locales
1194 provides details such as country, language, and codeset name.
1195 Contributed by Ulrich Drepper.
1199 * The gencat program now parses the input file according to the charset
1200 selected by the LC_CTYPE category. This is important for stateful
1201 character sets. To make generating catalogs easier there is a way
1202 to overwrite the charset selected by the locale: before the first
1203 message or $ quote line the catalog can contain a line like
1205 $ codeset=ISO-8859-2
1207 to select the charset (ISO-8859-2 in this case).
1209 Implemented by Shinya Hanataka and Ulrich Drepper.
1211 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1212 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1213 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1215 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1216 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1218 * The LANGUAGE environment variable is now ignored unless the locale is
1219 changed from the default "C" locale.
1221 * The usual bug fixes.
1225 * Greg McGary added runtime support for bounds checking using gcc's
1226 new -fbounded-pointers option. ix86 target is complete. PowerPC
1229 * Thorsten Kukuk added secure mode support to nscd.
1231 * The Berkeley db libraries have been removed.
1233 Related, the nss_db module is now in a separate package since it
1234 obviously requires a database library being available.
1236 * Wide character I/O streams implemented by Ulrich Drepper.
1238 * Functions from the extended socket API added by Ulrich Drepper.
1240 * Functions feenableexcept and fedisableexcept to control the
1241 behaviour of individual exceptions have been added by Andreas Jaeger.
1243 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1245 * The resolver code has been updated from bind 8.2.3-T5B which supports
1246 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1249 This change could in some situations effect backward compatibility. Since
1250 now `_res' is a thread-local instead of a global variable, modifying it
1251 in one thread does not have any effect in other threads.
1253 The resolver library was also extended to allow IPv6 as the transport
1254 protocol for the requests. This work was done by Stig Venaas.
1256 * Compatibility code for K&R C compilers has been removed from the
1257 header files. A ISO C compiler is needed to use the library
1258 (conforming to either C89 or C99 standard).
1260 * Complete rewrite of the localedef program to support multibyte character
1261 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1262 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1263 Implemented by Ulrich Drepper.
1265 Bruno Haible significantly improved the generation and use of the data
1266 structures for the wide character tables.
1268 * Plural handling in gettext implemented by Ulrich Drepper.
1270 * The utmp daemon has been removed.
1272 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1274 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1277 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1279 * POSIX barriers implemented by Kaz Kylheku.
1281 * POSIX spawn function family implemented by Ulrich Drepper.
1283 * POSIX spinlocks are now available.
1285 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1287 * the configure option --enable-kernel=X.Y.Z allows to strip out
1288 compatibility for kernel versions before X.Y.Z. This is currently only
1289 implemented for Linux.
1291 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1292 field sin6_scope_id. This means that all programs using IPv6 should be
1293 recompiled. Don't expect binary compatibility with previous glibc
1296 * various conversion modules for IBM character sets contributed by
1299 * IA-64 port by Jes Sorensen and HJ Lu.
1313 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1315 * New xdr functions are added; some rpc functions are now 64bit clean.
1317 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1319 * Fixed known incompatibilities with glibc 2.0.
1321 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1323 * Optimized a number of functions (especially the ELF dynamic loader).
1325 * Update timezone data files.
1327 * lots of charmaps corrections
1329 * some new locale definitions and charmaps
1334 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1335 conform to POSIX member type requirements. Symbol versions have been
1336 adjusted as needed within the library, and for direct use by applications,
1337 but there is potential for problems if third-party libraries use
1338 struct timeval as part of their interface. This does not present
1339 a problem for X and other "essential" system libraries.
1341 * An additional locale model to support C++ Standard Library locale
1342 model and probably more was implemented by Ulrich Drepper.
1344 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1347 * Miles Bader provided the `argp' function family to support hierachical
1348 command line argument parsing, layered on top of getopt.
1350 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1352 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1355 * scanf recognizes the %a and %A format for scanning floating point numbers.
1357 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1358 information and interfaces for the available integer types.
1360 * about 130 new math functions were added to implement the ISO C9x math
1363 * the new header <complex.h> contains definitions of the complex math
1364 functions from ISO C 9X.
1366 * the new header <tgmath.h> defines generic macros to use complex or
1367 real valued functions.
1369 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1371 * Andreas Jaeger provided a test suite for the math library.
1373 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1375 * Ulrich Drepper added character set conversion functions (iconv).
1377 * Optimized string functions have been added.
1379 * The localedata addon is now part of glibc.
1381 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1383 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1384 daemon for NSS (nscd).
1386 Missing a better place here are some numbers on improvements. Under
1387 Linux 2.1.125 un-tar-ing the kernel sources takes
1391 using local files 12.19s 6.88s 22.91s
1393 using NIS 13.92s 8.91s 26.34s
1395 using NIS & nscd 10.37s 7.34s 25.30s
1397 using NIS+ 27.57s 30.37s 640.46s
1399 using NIS+ & nscd 10.25s 7.83s 26.51s
1401 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1403 Keep in mind that non-namelookup related operations dominate above times.
1404 It was just a common complain that using NIS+ unpacking the kernel is
1407 [1] The old nscd implementation is not available anymore since it was
1408 distributed with glibc up to version 2.0.98 and thus is now replaced.
1410 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1412 * Mark Kettenis provided a Hesiod NSS module.
1414 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1415 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1417 * rcmd can now handle netgroups (Dick Streefland).
1419 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1422 * Support for the IPv6 protocol has been added to the socket API, as per the
1423 latest draft standards.
1425 * Support for Linux 2.2 has been added.
1427 * Interface changes relative to the latest 2.0.x release:
1428 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1429 addseverity NEW: Unix98
1430 alphasort64 NEW: LFS
1431 argp_err_exit_status NEW: argp, GNU ext
1432 argp_error NEW: argp, GNU ext
1433 argp_failure NEW: argp, GNU ext
1434 argp_help NEW: argp, GNU ext
1435 argp_parse NEW: argp, GNU ext
1436 argp_program_bug_address NEW: argp, GNU ext
1437 argp_program_version NEW: argp, GNU ext
1438 argp_program_version_hook NEW: argp, GNU ext
1439 argp_state_help NEW: argp, GNU ext
1440 argp_usage NEW: argp, GNU ext
1441 authdes_create NEW: Secure RPC
1442 authdes_getucred NEW: Secure RPC
1443 authdes_pk_create NEW: Secure RPC
1444 backtrace NEW: GNU ext.
1445 backtrace_symbols NEW: GNU ext.
1446 backtrace_symbols_fd NEW: GNU ext.
1448 cacosf NEW: ISO C 9x
1449 cacosh NEW: ISO C 9x
1450 cacoshf NEW: ISO C 9x
1451 cacoshl NEW: ISO C 9x
1452 cacosl NEW: ISO C 9x
1459 casinf NEW: ISO C 9x
1460 casinh NEW: ISO C 9x
1461 casinhf NEW: ISO C 9x
1462 casinhl NEW: ISO C 9x
1463 casinl NEW: ISO C 9x
1465 catanf NEW: ISO C 9x
1466 catanh NEW: ISO C 9x
1467 catanhf NEW: ISO C 9x
1468 catanhl NEW: ISO C 9x
1469 catanl NEW: ISO C 9x
1470 cbc_crypt NEW: Secure RPC
1474 ccoshf NEW: ISO C 9x
1475 ccoshl NEW: ISO C 9x
1481 cimagf NEW: ISO C 9x
1482 cimagl NEW: ISO C 9x
1483 clearerr_locked REMOVED
1484 clntunix_create NEW: sunrpc ext
1486 clog10 NEW: ISO C 9x
1487 clog10f NEW: ISO C 9x
1488 clog10l NEW: ISO C 9x
1498 cprojf NEW: ISO C 9x
1499 cprojl NEW: ISO C 9x
1501 crealf NEW: ISO C 9x
1502 creall NEW: ISO C 9x
1507 csinhf NEW: ISO C 9x
1508 csinhl NEW: ISO C 9x
1511 csqrtf NEW: ISO C 9x
1512 csqrtl NEW: ISO C 9x
1516 ctanhf NEW: ISO C 9x
1517 ctanhl NEW: ISO C 9x
1519 des_setparity NEW: Secure RPC
1520 ecb_crypt NEW: Secure RPC
1521 endutxent NEW: Unix98
1523 exp10f NEW: ISO C 9x
1524 exp10l NEW: ISO C 9x
1528 fattach NEW: STREAMS
1529 fdetach NEW: STREAMS
1533 feclearexcept NEW: ISO C 9x
1534 fegetenv NEW: ISO C 9x
1535 fegetexceptflag NEW: ISO C 9x
1536 fegetround NEW: ISO C 9x
1537 feholdexcept NEW: ISO C 9x
1539 feraiseexcept NEW: ISO C 9x
1540 ferror_locked REMOVED
1541 fesetenv NEW: ISO C 9x
1542 fesetexceptflag NEW: ISO C 9x
1543 fesetround NEW: ISO C 9x
1544 fetestexcept NEW: ISO C 9x
1545 feupdateenv NEW: ISO C 9x
1546 fflush_locked REMOVED
1550 fgets_unlocked NEW: GNU ext.
1551 fileno_locked REMOVED
1563 fputc_locked REMOVED
1564 fputs_unlocked NEW: GNU ext.
1565 fread_unlocked NEW: GNU ext.
1570 fstatvfs NEW: Unix98
1574 ftruncate64 NEW: LFS
1576 fwrite_unlocked NEW: GNU ext.
1577 gai_strerror NEW: IPv6
1581 getchar_locked REMOVED
1583 getdate_err NEW: Unix98
1584 getdate_r NEW: GNU ext.
1586 getnameinfo NEW: IPv6
1587 getnetname NEW: Secure RPC
1588 getpmsg NEW: STREAMS
1589 getpt NEW: Unix98 PTY
1590 getrlimit64 NEW: LFS
1591 getutxent NEW: Unix98
1592 getutxid NEW: Unix98
1593 getutxline NEW: Unix98
1594 glob64 NEW: GNU ext.
1595 globfree64 NEW: GNU ext.
1596 gnu_get_libc_release NEW: GNU ext.
1597 gnu_get_libc_version NEW: GNU ext.
1598 grantpt NEW: Unix98 PTY
1599 host2netname NEW: Secure RPC
1601 iconv_close NEW: iconv
1602 iconv_open NEW: iconv
1603 if_freenameindex NEW: IPv6
1604 if_indextoname NEW: IPv6
1605 if_nameindex NEW: IPv6
1606 if_nametoindex NEW: IPv6
1607 in6addr_any NEW: IPv6
1608 in6addr_loopback NEW: IPv6
1609 inet6_isipv4mapped NEW: IPv6
1610 isastream NEW: STREAMS
1611 iswblank NEW: GNU ext.
1612 key_decryptsession NEW: Secure RPC
1613 key_decryptsession_pk NEW: Secure RPC
1614 key_encryptsession NEW: Secure RPC
1615 key_encryptsession_pk NEW: Secure RPC
1616 key_gendes NEW: Secure RPC
1617 key_get_conv NEW: Secure RPC
1618 key_secretkey_is_set NEW: Secure RPC
1619 key_setnet NEW: Secure RPC
1620 key_setsecret NEW: Secure RPC
1621 llrint NEW: ISO C 9x
1622 llrintf NEW: ISO C 9x
1623 llrintl NEW: ISO C 9x
1624 llround NEW: ISO C 9x
1625 llroundf NEW: ISO C 9x
1626 llroundl NEW: ISO C 9x
1631 lrintf NEW: ISO C 9x
1632 lrintl NEW: ISO C 9x
1633 lround NEW: ISO C 9x
1634 lroundf NEW: ISO C 9x
1635 lroundl NEW: ISO C 9x
1637 makecontext NEW: Unix98
1638 mempcpy NEW: GNU ext.
1641 modify_ldt NEW: kernel
1645 nearbyint NEW: ISO C 9x
1646 nearbyintf NEW: ISO C 9x
1647 nearbyintl NEW: ISO C 9x
1648 netname2host NEW: Secure RPC
1649 netname2user NEW: Secure RPC
1650 nexttoward NEW: ISO C 9x
1651 nexttowardf NEW: ISO C 9x
1652 nexttowardl NEW: ISO C 9x
1656 passwd2des NEW: Secure RPC
1658 pow10f NEW: GNU ext.
1659 pow10l NEW: GNU ext.
1662 printf_size NEW: GNU ext.
1663 printf_size_info NEW: GNU ext.
1664 profil_counter REMOVED
1665 pthread_mutexattr_getkind_np REPLACED
1666 pthread_mutexattr_setkind_np REPLACED
1667 ptsname NEW: Unix98 PTY
1668 ptsname_r NEW: Unix98 PTY
1670 putchar_locked REMOVED
1671 putgrent NEW: GNU ext.
1673 putpmsg NEW: STREAMS
1674 pututxline NEW: Unix98
1678 readdir64_r NEW: LFS
1679 remquo NEW: ISO C 9x
1680 remquof NEW: ISO C 9x
1681 remquol NEW: ISO C 9x
1683 roundf NEW: ISO C 9x
1684 roundl NEW: ISO C 9x
1686 scalbln NEW: ISO C 9x
1687 scalblnf NEW: ISO C 9x
1688 scalblnl NEW: ISO C 9x
1690 sendfile NEW: kernel
1691 setcontext NEW: Unix98
1692 setrlimit64 NEW: LFS
1693 setutxent NEW: Unix98
1695 sigignore NEW: Unix98
1696 sigqueue NEW: POSIX.1b
1697 sigrelse NEW: Unix98
1698 sigset NEW: POSIX.1b
1699 sigtimedwait NEW: POSIX.1b
1700 sigwaitinfo NEW: POSIX.1b
1701 sincos NEW: GNU ext.
1702 sincosf NEW: GNU ext.
1703 sincosl NEW: GNU ext.
1707 strcasestr NEW: GNU ext.
1708 strtoimax NEW: ISO C 9x
1709 strtoumax NEW: ISO C 9x
1710 strverscmp NEW: GNU ext.
1711 svcauthdes_stats NEW: Secure RPC
1712 svcunix_create NEW: sunrpc etx
1713 svcunixfd_create NEW: sunrpc ext
1714 swapcontext NEW: Unix98
1715 tcgetsid NEW: Unix98 PTY
1716 tdestroy NEW: GNU ext.
1717 tgamma NEW: ISO C 9x
1718 tgammaf NEW: ISO C 9x
1719 tgammal NEW: ISO C 9x
1723 truncf NEW: ISO C 9x
1724 truncl NEW: ISO C 9x
1726 unlockpt NEW: Unix98 PTY
1727 updwtmpx NEW: Unix98
1728 user2netname NEW: Secure RPC
1729 utmpxname NEW: Unix98
1730 versionsort NEW: GNU ext.
1731 versionsort64 NEW: GNU ext.
1733 wcscasecmp NEW: GNU ext.
1734 wcsncasecmp NEW: GNU ext.
1735 wcsnlen NEW: GNU ext.
1736 wcstoimax NEW: ISO C 9x
1737 wcstoll NEW: ISO C 9x
1738 wcstoull NEW: ISO C 9x
1739 wcstoumax NEW: ISO C 9x
1741 wordexp NEW: POSIX.2
1742 wordfree NEW: POSIX.2
1743 write_profiling REMOVED
1744 xdecrypt NEW: Secure RPC
1745 xdr_authdes_cred NEW: Secure RPC
1746 xdr_authdes_verf NEW: Secure RPC
1747 xdr_cryptkeyarg NEW: Secure RPC
1748 xdr_cryptkeyarg2 NEW: Secure RPC
1749 xdr_cryptkeyres NEW: Secure RPC
1750 xdr_getcredres NEW: Secure RPC
1751 xdr_key_netstarg NEW: Secure RPC
1752 xdr_key_netstres NEW: Secure RPC
1753 xdr_keybuf NEW: Secure RPC
1754 xdr_keystatus NEW: Secure RPC
1755 xdr_netnamestr NEW: Secure RPC
1756 xdr_sizeof NEW: Secure RPC
1757 xdr_unixcred NEW: sunrpc ext
1758 xencrypt NEW: Secure RPC
1759 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1770 * inet_ntoa is thread-safe
1772 * updwtmp is moved from libutil to libc
1774 * rewrite of cbrt function
1776 * update of timezone data
1790 * add atoll function
1792 * fix complex problems in Berkeley DB code
1794 * fix math functions
1798 * fixed lots of header problems (especially Linux/GNU specific)
1800 * dynamic loader preserves all registers
1802 * Roland McGrath provided support for handling of auxiliary objects in
1803 the ELF dynamic loader.
1805 * support for parallel builds is improved
1809 * GNU extensions are no longer declared by default. To enable them you
1810 must define the macro `_GNU_SOURCE' in your program or compile with
1813 * The library has changed from using GNU ld symbol aliases to using weak
1814 symbols where available. The ELF object file format supports weak
1815 symbols; GNU ld also supports weak symbols in the a.out format. (There
1816 is also now support for other GNU ld extensions in ELF. Use the
1817 `--with-elf' option to configure to indicate you have ELF, and
1818 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1819 of many files which contained only symbol aliases, reducing the size of
1820 the source and the compiled library; many other files were renamed to
1821 less cryptic names previously occupied by the symbol alias files.
1822 There is a new header file <elf.h> for programs which operate on
1823 files in the ELF format.
1825 * Converted to Autoconf version 2, so `configure' has more options.
1826 Run `configure --help' to see the details.
1828 * The library can now be configured to build profiling, highly-optimized
1829 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1830 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1831 `configure' enable building these extra libraries. The shared library is
1832 built by default when using both ELF and GNU ld. When shared libraries
1833 are enabled, the new library `-ldl' is available for arbitrary run-time
1834 loading of shared objects; its interface is defined in <dlfcn.h>. The
1835 new header file <link.h> gives access to the internals of the run-time
1836 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1837 application of same name on other systems and it provides information
1838 about dynamically linked binaries.
1840 * The C library now provides the run-time support code for profiling
1841 executables compiled with `-pg'. Programs can control the profiling code
1842 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1843 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1844 the support for this file format was contributed by David Mosberger-Tang.
1846 * The math code has been replaced with a math library based on fdlibm from
1847 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1848 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1849 functions. The math functions now reside in a separate library, so
1850 programs using them will need to use `-lm' their linking commands.
1852 * John C. Bowman contributed optimized ix87 assembler inline functions.
1854 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1855 mechanism similar to that found in Solaris 2. This is now used for the
1856 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1857 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1858 file controls what services are used for each individual database. This
1859 works by loading shared libraries with names specified in `nsswitch.conf',
1860 so service modules can be changed or added at any time without even
1861 relinking any program. Currently there are the file, db, and NIS based
1862 NSS services available.
1864 * The new functions `strtoq' and `strtouq' parse integer values from
1865 strings, like `strtol' and `strtoul', but they return `long long int' and
1866 `unsigned long long int' values, respectively (64-bit quantities).
1868 * The new functions `strtof' and `strtold' parse floating-point values from
1869 strings, like `strtod', but they return `float' and `long double' values,
1870 respectively (on some machines `double' and `long double' are the same).
1872 * Ulrich Drepper has contributed new implementations of the floating-point
1873 printing and reading code used in the `printf' family of functions and
1874 `strtod', `strtof', and `strtold'. These new functions are perfectly
1875 accurate, and much faster than the old ones.
1877 * The implementation of the POSIX locale model was completely rewritten by
1878 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1879 to compile the POSIX locale definition.
1881 * The former dummy implementations of the strcoll and strxfrm function are
1882 now replaced by fully functional code contributed by Ulrich Drepper. The
1883 collation information comes from the POSIX locale definitions.
1885 * The new header <langinfo.h> defines an interface for accessing
1886 various locale-dependent data (using the locale chosen with `setlocale').
1888 * Ulrich Drepper has contributed a new suite of functions for operation on
1889 wide-character and multibyte-character strings, in <wchar.h>;
1890 and classification and case conversion of wide characters, in <wctype.h>.
1891 These new functions are conforming to the ISO C, Amendement 1 specification.
1893 * There is now a second implementation of the standard I/O library available.
1894 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1895 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1897 * You can now use positional parameter specifications in format strings
1898 for the `printf' and `scanf' families of functions. For example,
1899 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1900 ``Number 6, Mr Jones''. This is mainly useful when providing different
1901 format strings for different languages, whose grammars may dictate
1902 different orderings of the values being printed. To support this
1903 feature, the interface for `register_printf_handler' has changed; see
1904 the header file <printf.h> for details.
1906 * The `printf' and `scanf' families of functions now understand a new
1907 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1908 to group numbers as indicated by the locale; for `scanf' and friends, this
1909 says to accept as valid only a number with all the proper grouping
1910 separators in the right places. In the default "C" locale, numbers are
1911 not grouped; but locales for specific countries will define the usual
1912 conventions (i.e. separate thousands with `,' in the US locale).
1914 * The pgrp functions have been regularized, slightly incompatibly but much
1915 less confusingly. The core functions are now `getpgid' and `setpgid',
1916 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1917 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1918 provided for compatibility. There is no longer an incompatible `getpgrp'
1919 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1921 * The new header file <fts.h> and suite of functions simplify programs that
1922 operate on directory trees. This code comes from 4.4 BSD.
1924 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1925 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1926 NSS scheme used in glibc.
1928 * There is a new malloc debugging hook `__memalign_hook'.
1930 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1931 `unsigned int' in <sys/types.h>. These are for compatibility only and
1932 their use is discouraged.
1934 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1935 done differently, so that it works even without GNU ld.
1937 * New function `euidaccess' checks allowed access to a file like `access',
1938 but using the effective IDs instead of the real IDs.
1940 * The time zone data files have been updated for the latest and greatest
1941 local time conventions of the countries of the world.
1943 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1946 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1947 for formatting floating-point numbers. They are provided only for
1948 compatibility; new programs should use `sprintf' instead. There are
1949 also equivalent function for the `long double' floating-point type and
1950 all functions also exist in a reentrant form.
1952 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1953 functions for maintaining the login-record files (primarily of use to
1954 system programs such as `login'), and convenient functions for
1955 allocating and initializing a pseudo-terminal (pty) device.
1957 * Ulrich Drepper has contributed new support for System V style
1958 shared memory and IPC on systems that support it.
1960 * Ulrich Drepper has contributed several miscellaneous new functions found
1961 in System V: The `hsearch' family of functions provide an effective
1962 implementation of hash tables; `a64l' and `l64a' provide a very simple
1963 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1966 * Ulrich Drepper has contributed new reentrant counterparts for the
1967 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1969 * Ulrich Drepper has contributed new, highly-optimized versions of several
1970 string functions for the i486/Pentium family of processors.
1972 * Ulrich Drepper has updated the Linux-specific code, based largely
1973 on work done in Hongjiu Lu's version of GNU libc for Linux.
1974 The GNU library now supports Linux versions 2.0.10 and later,
1975 using the ELF object file format (i[3456]86-*-linux).
1977 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1979 * David Mosberger-Tang and Richard Henderson have ported the C library
1980 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1981 dynamic linking support for ELF/Alpha.
1983 * Richard Henderson contributed several Alpha optimized assembler function
1984 for arithmetic and string handling.
1986 * Ulrich Drepper has contributed a new set of message catalog functions to
1987 support multiple languages using the <libintl.h> interface, for use with
1988 his new package GNU gettext. Translation volunteers have contributed
1989 catalogs of the library's messages in Spanish, German, and Korean.
1991 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1992 program and the `catgets' function for reading the catalog files it
1993 creates. (The <libintl.h> interface is preferred; we include the
1994 <nl_types.h> interface using `catgets' only for source compatibility with
1995 programs already written to use it.)
1997 * New header file <values.h> gives SVID-compatible names for <limits.h>
2000 * Various new macros, declarations, and small header files for compatibility
2003 * New function `group_member' is a convenient way to check if a process has
2004 a given effective group ID.
2006 * When using GCC 2.7 and later, the socket functions are now declared in a
2007 special way so that passing an argument of type `struct sockaddr_in *',
2008 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2009 `struct sockaddr *' type, does not generate a type-clash warning.
2011 * New function `error' declared in header file <error.h> is a convenient
2012 function for printing error messages and optionally exiting; this is the
2013 canonical function used in GNU programs. The new functions `err', `warn',
2014 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2015 doing the same thing.
2017 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2018 POSIX.2 `glob' function to do ~ and {...} expansion.
2020 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2021 `clearenv' which is used in POSIX.9 is also available.
2023 * New function `getsid' returns session ID number on systems that support it.
2025 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2026 files <db.h> and <mpool.h> provide a rich set of functions for several
2027 types of simple databases stored in memory and in files, and <ndbm.h> is
2028 an old `ndbm'-compatible interface using the `db' functions. Link with
2029 `-ldb' to get these functions.
2031 * New macro `strdupa' copies a string like `strdup', but uses local stack
2032 space from `alloca' instead of dynamic heap space from `malloc'.
2034 * New function `strnlen' is like `strlen' but searches only a given maximum
2035 number of characters for the null terminator. `stpncpy', `strndup' and
2036 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2039 * New function `statfs' in header <sys/statfs.h>.
2041 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2042 provide convenient functions for operating on blocks of null-terminated
2045 * A new suite of functions in <utmp.h> handle all the details of reading
2046 and writing the utmp file.
2048 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2051 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2052 completely POSIX compliant and also implemented the extended functionality
2053 to handle alternate digit representation and alternate era date formats.
2055 * Ulrich Drepper provided an implementation of the `strptime' function
2056 defined in XPG4.2 which transforms a string into a `struct tm' value.
2058 * Paul Eggert provided the tzselect shell script as part of the timezone
2059 code. The shell script makes it easy to select the correct timezone
2062 * The implementation of the malloc family of functions is completely replaced
2063 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2064 The implementation uses the mmap function (if available) and it is
2065 optimized for the use in multi threaded programs.
2067 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2068 functions. This new functionality is usable by specifying a special
2069 salt string and it is compatible with implementation on *BSD systems.
2071 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2072 `getsubopt' to handle second level command line options, `bsd_signal'
2073 to access BSD style `signal' functionality, the obsolete `regexp' style
2076 * the `lchown' function is available on system which support this
2079 * The implementation of the shadow password handling function was contributed
2082 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2084 * POSIX.1g support was added. The <sys/select.h> header is available,
2085 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2086 implementation of `getaddrinfo'.
2090 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2092 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2093 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2095 * The new function `daemon' from 4.4 BSD is useful for server programs that
2096 want to put themselves in the background.
2098 * Joel Sherrill has contributed support for several standalone boards that
2099 run without an operating system.
2101 * `printf', `scanf' and friends now accept a `q' type modifier for long
2102 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2104 * All of the code taken from BSD (notably most of the math and networking
2105 routines) has been updated from the BSD 4.4-Lite release.
2107 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2109 * The new functions `getdomainname' and `setdomainname' fetch or change the
2110 YP/NIS domain name. These are system calls which exist on systems which
2113 * The time zone data files have been updated for the latest international
2116 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2117 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2121 * The C library now includes support for Sun RPC, from Sun's free
2122 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2123 are included. (There is still no support for YP.)
2125 * Tom Quinn has contributed a port of the C library to SGI machines running
2126 Irix 4 (mips-sgi-irix4).
2128 * The new `lockf' function is a simplified interface to the locking
2129 facilities of `fcntl', included for compatibility.
2131 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2133 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2135 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2138 * The error message printed by `assert' for a failed assertion now includes
2139 the name of the program (if using GNU ld) and the name of the calling
2140 function (with versions of GCC that support this).
2142 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2144 * The library now includes the <sys/mman.h> header file and memory
2145 management functions `mmap', `munmap', `mprotect', `msync', and
2146 `madvise', on systems that support those facilities.
2148 * The interface for `mcheck' has changed slightly: the function called to
2149 abort the program when an allocation inconsistency is detected now takes
2150 an argument that indicates the type of failure. The new function
2151 `mprobe' lets you request a consistency check for a particular block at
2152 any time (checks are normally done only when you call `free' or `realloc'
2155 * It is now possible to easily cross-compile the C library, building on one
2156 system a library to run on another machine and/or operating system. All
2157 you need to do is set the variable `HOST_CC' in `configparms' to the
2158 native compiler for programs to run on the machine you are building on (a
2159 few generator programs are used on Unix systems); set `CC' to the
2162 * The new function `fexecve' (only implemented on the GNU system) executes
2163 a program file given a file descriptor already open on the file.
2167 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2168 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2170 * You can set the variable `libprefix' in `configparms' to specify a prefix
2171 to be prepended to installed library files; this makes it easy to install
2172 the GNU C library to be linked as `-lgnuc' or whatever.
2174 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2175 copies a limited number of characters from a string, and returns the
2176 address of the last character written.
2178 * You no longer need to check for whether the installed `stddef.h' is
2179 compatible with the GNU C library. configure now checks for you.
2181 * You can now define a per-stream `fileno' function to convert the
2182 stream's cookie into an integral file descriptor.
2184 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2185 allocates zero bytes of storage, and returns a unique pointer which
2186 you can pass to `realloc' or `free'. The behavior is undefined if
2187 you dereference this pointer.
2189 * The C library now runs on Sony NEWS m68k machines running either
2190 NewsOS 3 or NewsOS 4.
2192 * The new `syscall' function is a system-dependent primitive function
2193 for invoking system calls. It has the canonical behavior on Unix
2194 systems, including unreliable return values for some calls (such as
2195 `pipe', `fork' and `getppid').
2197 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2198 to `EAGAIN', which is the preferred name. On systems whose kernels
2199 use two distinct codes, the C library now translates EWOULDBLOCK to
2200 EAGAIN in every system call function.
2204 * The GNU C Library Reference Manual is now distributed with the library.
2205 `make dvi' will produce a DVI file of the printed manual.
2206 `make info' will produce Info files that you can read on line using C-h i
2207 in Emacs or the `info' program.
2208 Please send comments on the manual to bug-glibc-manual@gnu.org.
2210 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2212 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2214 * Jason Merrill has contributed a port to the Sequent Symmetry running
2215 Dynix version 3 (i386-sequent-dynix).
2217 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2218 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2220 * New function `memory_warnings' lets you arrange to get warnings when
2221 malloc is running out of memory to allocate, like Emacs gives you.
2223 * The C library now contains the relocating allocator used in Emacs 19 for
2224 its editing buffers. This allocator (ralloc) minimizes allocation
2225 overhead and fragmentation by moving allocated regions around whenever it
2226 needs to. You always refer to a ralloc'd region with a "handle" (a
2227 pointer to a pointer--an object of type `void **').
2229 * There is a new `printf' format: `%m' gives you the string corresponding
2230 to the error code in `errno'.
2232 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2233 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2234 pass, the `a' modifier says to fill in a `char **' you pass with a
2237 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2238 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2239 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2241 * `mkstemp' is a traditional Unix function to atomically create and open a
2242 uniquely-named temporary file.
2246 * The standard location for the file that says what the local timezone is
2247 has changed again. It is now `/usr/local/etc/localtime' (or more
2248 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2250 * The distribution no longer contains any files with names longer than 14
2253 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2254 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2256 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2260 * The configuration process has changed quite a bit. The `configure'
2261 script is now used just like the configuration scripts for other GNU
2262 packages. The `sysdeps' directory hierarchy is much rearranged.
2263 The file `INSTALL' explains the new scheme in detail.
2265 * The header files no longer need to be processed into ANSI C and
2266 traditional C versions. There is just one set of files to install, and
2267 it will work with ANSI or old C compilers (including `gcc -traditional').
2269 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2270 MIPS DECStation running Ultrix 4.
2272 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2273 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2274 made itself into a shared library.
2276 * Yet further improved support for the i386, running 4.3 BSD-like systems
2277 (such as Mach 3 with the Unix single-server), or System V.
2279 * New function `strncasecmp' to do case-insensitive string comparison
2280 with limited length.
2282 * New function `strsep' is a reentrant alternative to `strtok'.
2284 * New functions `scandir' and `alphasort' for searching directories.
2286 * New function `setenv' is a better interface to `putenv'.
2288 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2289 function for traversing a directory tree.
2291 * The GNU obstack package is now also part of the C library.
2292 The new function `open_obstack_stream' creates a stdio stream that
2293 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2294 formatted output directly to an obstack.
2296 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2297 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2299 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2301 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2302 things to your strings.
2304 * There are some new test programs: test-fseek, testmb, and testrand.
2306 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2307 These ports are not finished, but are a good starting place for really
2308 supporting those systems.
2310 * `/etc/localtime' is now the standard location for the file that says what
2311 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2312 This follows the general principle that `/etc' is the place for all local
2313 configuration files.
2315 * The C library header files now use `extern "C"' when used by the C++
2316 compiler, so the C library should now work with C++ code.
2318 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2319 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2322 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2323 function which uses the `merge sort' algorithm, and is said to be
2324 significantly faster than the old GNU `qsort' function. Merge sort is
2325 now the standard `qsort' function. The new algorithm can require a lot
2326 of temporary storage; so, the old sorting function is called when the
2327 required storage is not available.
2329 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2330 provides the Unix `crypt' function, plus some other entry points.
2332 * The code and header files taken from 4.4 BSD have been updated with the
2333 latest files released from Berkeley.
2335 ----------------------------------------------------------------------
2336 Copyright information:
2338 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2340 Permission is granted to anyone to make or distribute verbatim copies
2341 of this document as received, in any medium, provided that the
2342 copyright notice and this permission notice are preserved,
2343 thus giving the recipient permission to redistribute in turn.
2345 Permission is granted to distribute modified versions
2346 of this document, or of portions of it,
2347 under the above conditions, provided also that they
2348 carry prominent notices stating who last changed them.
2351 version-control: never
projects / platform / upstream / glibc.git / blob