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, 387, 431, 832, 2801, 7003, 9954, 10253, 10278, 11087, 13028, 13982,
13 13985, 14029, 14143, 14155, 14547, 14699, 14752, 14876, 14910, 15048,
14 15218, 15277, 15308, 15362, 15374, 15400, 15427, 15522, 15531, 15532,
15 15608, 15609, 15610, 15632, 15640, 15670, 15672, 15680, 15681, 15723,
16 15734, 15735, 15736, 15748, 15749, 15754, 15760, 15763, 15764, 15797,
17 15799, 15825, 15844, 15847, 15849, 15855, 15856, 15857, 15859, 15867,
18 15886, 15887, 15890, 15892, 15893, 15895, 15897, 15905, 15909, 15917,
19 15919, 15921, 15923, 15939, 15948, 15963, 15966, 15985, 15988, 15997,
20 16032, 16034, 16036, 16037, 16041, 16055, 16071, 16072, 16074, 16078,
21 16103, 16112, 16143, 16146, 16150, 16151, 16153, 16167, 16172.
23 * CVE-2012-4412 The strcoll implementation caches indices and rules for
24 large collation sequences to optimize multiple passes. This cache
25 computation may overflow for large collation sequences and may cause a
26 stack or buffer overflow. This is now fixed to use a slower algorithm
27 which does not use a cache if there is an integer overflow.
29 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
30 rules for large collation sequences to optimize multiple passes and falls
31 back to alloca if malloc fails, resulting in a possible stack overflow.
32 The implementation now falls back to an uncached collation sequence lookup
35 * CVE-2013-4788 The pointer guard used for pointer mangling was not
36 initialized for static applications resulting in the security feature
37 being disabled. The pointer guard is now correctly initialized to a
38 random value for static applications. Existing static applications need
39 to be recompiled to take advantage of the fix (bug 15754).
41 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
42 to the d_name member of struct dirent, or omit the terminating NUL
43 character. (Bugzilla #14699).
45 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
46 aligned_alloc functions could allocate too few bytes or corrupt the
47 heap when passed very large allocation size values (Bugzilla #15855,
50 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
51 for AF_INET6 has been fixed (Bugzilla #16072).
53 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
54 pap_CW, quz_PE, the_NP.
56 * Substantially revised locales: gd_GB, ht_HT
58 * The LC_ADDRESS field was updated to support country_car for almost all
61 * ISO 1427 definitions were updated.
63 * ISO 3166 definitions were updated.
65 * The localedef utility now supports --big-endian and --little-endian
66 command-line options to generate locales for a different system from that
67 for which the C library was built.
69 * Binary locale files now only depend on the endianness of the system for
70 which they are generated and not on other properties of that system. As a
71 consequence, binary files generated with new localedef may be incompatible
72 with old versions of the GNU C Library, and binary files generated with
73 old localedef may be incompatible with this version of the GNU C Library,
74 in the following circumstances:
76 + Locale files may be incompatible on m68k systems.
78 + Locale archive files (but not separate files for individual locales) may
79 be incompatible on systems where plain "char" is signed.
81 * The configure option --disable-versioning has been removed. Builds with
82 --disable-versioning had not worked for several years.
84 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
85 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
87 * SystemTap probes for malloc have been introduced.
89 * Support for powerpc64le has been added.
91 * The soft-float powerpc port now supports e500 processors.
95 * The following bugs are resolved with this release:
97 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
98 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
99 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
100 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
101 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
102 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
103 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
104 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
105 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
106 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
107 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
108 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
109 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
112 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
113 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
114 Distributions can re-enable building and using pt_chown via the new configure
115 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
116 considerable security risks and should only be used if the distribution
117 understands and accepts the risks.
119 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
122 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
123 fixed (Bugzilla #15330).
125 * Add support for calling C++11 thread_local object destructors on thread
126 and program exit. This needs compiler support for offloading C++11
127 destructor calls to glibc.
129 * Improved worst case performance of libm functions with double inputs and
132 * Support for priority inherited mutexes in pthread condition variables on
133 non-x86 architectures.
135 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
137 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
139 * Optimized string functions for ARM. Implemented by Will Newton and
142 * Optimized libm functions for SPARC. Implemented by David S. Miller.
144 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
147 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
148 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
150 * Added a benchmark framework to track performance of functions in glibc.
152 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
153 It is based on draft TS 18661 and currently enabled as a GNU extension.
155 * On Linux, the clock function now uses the clock_gettime system call
156 for improved precision, rather than old times system call.
158 * Added new API functions pthread_getattr_default_np and
159 pthread_setattr_default_np to get and set the default pthread
160 attributes of a process.
162 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
163 This may improve lock scaling of existing programs on TSX capable systems.
164 When the --enable-lock-elision=yes parameter is specified at configure
165 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
168 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
169 availability). Implemented by Ryan S. Arnold.
171 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
175 * The following bugs are resolved with this release:
177 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
178 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
179 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
180 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
181 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
182 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
183 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
184 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
185 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
186 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
187 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
188 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
189 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
190 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
191 14879, 14889, 14893, 14898, 14914.
193 * Optimization of memcpy for MIPS.
195 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
196 EMFILE has been fixed (Bugzilla #14889).
198 * The add-on ports collection is now distributed in the "ports" subdirectory
199 of the main GNU C Library distribution, rather than separately.
201 * Port to ARM AArch64 contributed by Linaro.
203 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
204 Optimized versions of memcpy, memset, and memcmp added for System z10 and
206 Implemented by Andreas Krebbel.
208 * The new function secure_getenv allows secure access to the environment,
209 returning NULL if running in a SUID/SGID process. This function replaces
210 the internal function __secure_getenv.
212 * SystemTap static probes have been added into the dynamic linker.
213 Implemented by Gary Benson.
215 * Optimizations of string functions strstr, strcasestr and memmem.
216 Implemented by Maxim Kuvyrkov.
218 * The minimum Linux kernel version that this version of the GNU C Library
219 can be used with is 2.6.16.
221 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
222 powerpc POWER7. Implemented by Will Schmidt.
224 * New configure option --disable-nscd builds the C library such that it
225 never attempts to contact the Name Service Caching Daemon (nscd).
226 New configure option --disable-build-nscd avoids building nscd itself;
227 this is the default if --disable-nscd is used.
229 * Improved support for cross-compilation, including cross-testing and
230 bootstrap builds without a previously built glibc.
232 * Several testsuite tests are now able to test multiple IFUNC variants of an
233 interface, rather than just testing the one that would be chooen by
236 * New configure options --with-bugurl and --with-pkgversion, for
237 distributors to use to embed their bug-reporting and package version
238 information in --help and --version output.
240 * The ttyname and ttyname_r functions on Linux now fall back to searching for
241 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
242 allows creation of chroots without the procfs mounted on /proc.
244 * The `crypt' function now fails if passed salt bytes that violate the
245 specification for those values. On Linux, the `crypt' function will
246 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
247 enabled, and fail on encrypted strings using the MD5 or DES algorithm
248 when the mode is enabled.
250 * The `clock_*' suite of functions (declared in <time.h>) is now available
251 directly in the main C library. Previously it was necessary to link with
252 -lrt to use these functions. This change has the effect that a
253 single-threaded program that uses a function such as `clock_gettime' (and
254 is not linked with -lrt) will no longer implicitly load the pthreads
255 library at runtime and so will not suffer the overheads associated with
256 multi-thread support in other code such as the C++ runtime library.
258 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
263 * The following bugs are resolved with this release:
265 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
266 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
267 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
268 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
269 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
270 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
271 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
272 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
273 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
274 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
275 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
276 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
277 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
278 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
279 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
280 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
281 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
282 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
283 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
284 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
285 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
286 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
289 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
290 configuring glibc with:
291 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
292 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
293 Implemented by H.J. Lu.
297 + define static_assert
299 + do not declare gets
301 + declare at_quick_exit and quick_exit also for ISO C11
303 + aligned_alloc. NB: The code is deliberately allows the size parameter
304 to not be a multiple of the alignment. This is a moronic requirement
305 in the standard but it is only a requirement on the caller, not the
310 + uchar.h support added
312 + CMPLX, CMPLXF, CMPLXL added
314 Implemented by Ulrich Drepper.
316 * Support for the IA-64 has been moved to ports.
318 * Remove support for anything but ELF binary format
320 * Checking versions of poll, ppoll added.
321 Implemented by Ulrich Drepper.
323 * More generic and 64-bit performance optimizations to math functions.
324 Implemented by Ulrich Drepper.
326 * New configure option --enable-obsolete-rpc makes the deprecated RPC
327 headers and functions available at compile time as they were before
328 version 2.14. This option will be removed at some time in the future
329 after the TI-RPC library becomes fully sufficient for the needs of
330 existing applications.
332 * Compatibility code for Linux kernel versions before 2.4 has been removed.
333 Note that glibc is not expected to work with any Linux kernel version
336 * New header <sys/auxv.h> and function getauxval allowing easy access to
337 the AT_* key-value pairs passed from the Linux kernel. The header also
338 defines the HWCAP_* bits associated with the AT_HWCAP key.
340 * New locales: mag_IN
342 * New configure option --enable-systemtap builds SystemTap static probes
343 into libc for setjmp and longjmp and into libpthread for various operations.
344 So far the setjmp/longjmp probes and some of the libpthread probes are
345 provided only for i*86 and x86_64.
346 Implemented by Roland McGrath and Rayson Ho.
348 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
350 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
353 * More optimized functions for SPARC. Implemented by David S. Miller.
355 * Improved support for cross-compilation, especially bootstrap builds
356 without a previously built glibc.
358 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
359 Chris Metcalf from Tilera.
361 * Support for the old ARM ABI has been removed from ports. Only the EABI is
362 now supported for ARM processors.
364 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
365 as the name of the dynamic linker, to distinguish it from the
366 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
368 * Support for CRIS has been removed from ports.
370 * A new class of installed header has been documented for low-level
371 platform-specific functionality. PowerPC added the first instance with a
372 function to provide time base register access. Contributed by Tulio
373 Magno Quites Machado Filho.
375 * ix86 configurations now install header files that are consistent with
376 what x86-64 configurations install. These same header files can be used
377 for -m32, -m64, or -mx32 builds.
378 Contributed by H.J. Lu.
380 * Math library bug fixes. A thorough audit of all open math library bugs was
381 conducted by Joseph Myers. Significant progress was made on many math
382 library bugs resulting in more accurate exceptions and function results.
383 Many thanks to all those that contributed including Andreas Jaeger for his
384 patch review and work on the x87 trigonometric instruction issues.
386 * Timezone data is no longer installed. Timezone-related binaries and scripts
387 will continue to be installed. Users should obtain their timezone data from
388 their distribution provider or from the tzdata package at
389 <ftp://munnari.oz.au/pub/>.
393 * The following bugs are resolved with this release:
395 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
396 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
397 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
398 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
399 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
400 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
401 13484, 13506, 13515, 13523, 13524, 13538, 13540
403 * New program pldd to list loaded object of a process
404 Implemented by Ulrich Drepper.
406 * Add nss_db support back to glibc. No more dependency on Berkeley db
407 and support for initgroups lookups.
408 Implemented by Ulrich Drepper.
410 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
411 Contributed by HJ Lu.
413 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
414 Contributed by HJ Lu.
416 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
417 on x86-32 and x86-64.
418 Contributed by Liubov Dmitrieva.
420 * Optimized strchr and strrchr for SSE on x86-32.
421 Contributed by Liubov Dmitrieva.
423 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
424 for x86-64 and x86-32.
425 Contributed by Liubov Dmitrieva.
427 * New interfaces: scandirat, scandirat64
428 Implemented by Ulrich Drepper.
430 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
431 Implemented by Ulrich Drepper.
433 * nscd now also caches the netgroup database.
434 Implemented by Ulrich Drepper.
436 * Integrate libm with gcc's -ffinite-math-only option.
437 Implemented by Ulrich Drepper.
439 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
440 to math functions. Implemented by Ulrich Drepper.
442 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
443 Implemented by Ulrich Drepper.
445 * New Linux interfaces: process_vm_readv, process_vm_writev
447 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
448 Implemented by Ulrich Drepper.
450 * Optimized nearbyint and strcasecmp for PPC.
451 Implemented by Adhemerval Zanella.
453 * New locales: bho_IN, unm_US, es_CU, ta_LK
457 * The following bugs are resolved with this release:
459 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
460 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
461 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
462 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
463 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
464 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
465 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
466 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
467 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
468 12795, 12811, 12813, 12814, 12841
470 * The RPC implementation in libc is obsoleted. Old programs keep working
471 but new programs cannot be linked with the routines in libc anymore.
472 Programs in need of RPC functionality must be linked against TI-RPC.
473 The TI-RPC implementation is IPv6 enabled and there are other benefits.
475 Visible changes of this change include (obviously) the inability to link
476 programs using RPC functions without referencing the TI-RPC library and the
477 removal of the RPC headers from the glibc headers.
478 Implemented by Ulrich Drepper.
480 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
481 syncfs, setns, sendmmsg
483 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
484 yue_HK, lij_IT, mhr_RU
486 * New encodings: CP770, CP771, CP772, CP773, CP774
488 * New program sotruss to trace calls through PLTs
489 Implemented by Ulrich Drepper.
491 * The malloc hook implementation is marked deprecated and will be removed
492 from the default implementation in the next version. The design never
493 worked ever since the introduction of threads. Even programs which do
494 not create threads themselves can use multiple threads created internally.
498 * The following bugs are resolved with this release:
500 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
501 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
502 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
503 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
506 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
508 * POWER7 optimizations: memset, memcmp, strncmp
510 * New optimized string functions for x86-64: strnlen (SSE2),
511 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
512 Implemented by Ulrich Drepper.
516 * The following bugs are resolved with this release:
518 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
519 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
520 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
521 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
522 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
523 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
524 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
525 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
527 * New interfaces: pthread_getname_np, pthread_setname_np
529 * New Linux interface: recvmmsg
531 * STT_GNU_IFUNC implemented for Sparc by David Miller.
533 * The dynamic linker now recognizes supported ABI versions from the
534 EI_ABIVERSION field in the ELF header.
535 Implemented by Ulrich Drepper.
537 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
538 will not be used to fill in password fields in the passwd.byname replies.
539 Instead it is used to synthesize the shadow.byname table, should it be
540 missing. This is a useful mode in some installations involving Solaris.
541 Implemented by Ulrich Drepper.
543 * New locales: kok_IN, sq_MK, cv_RU
547 * The following bugs are resolved with this release:
549 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
550 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
551 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
552 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
553 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
554 10789, 10817, 10823, 10840, 10847
556 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
558 Implemented by Ulrich Drepper.
560 * Checking version of longjmp added that fails if an uninitialized stack
561 frame would be created. Implemented by Ulrich Drepper.
563 * STT_GNU_IFUNC is now supported in static executables.
564 Implemented by H.J. Lu.
566 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
568 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
569 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
570 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
571 Contributed by H.J. Lu.
573 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
574 Implemented by Ulrich Drepper.
576 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
578 Contributed by H.J. Lu.
580 * Support for fma instruction in AVX on x86-64.
581 Implemented by H.J. Lu and Ulrich Drepper.
583 * AVX support in x86-64 auditing support in ld.so.
584 Implemented by H.J. Lu.
586 * STB_GNU_UNIQUE support added.
587 Implemented by Ulrich Drepper.
589 * Implement second fallback mode for optimized DNS lookup for even more
590 broken environments. If two requests from the same port are not
591 handled correctly close the socket and open a new one before sending
592 the second request. The 'single-request-reopen' option in /etc/resolv.conf
593 can be used to select this mode right away, instead of rediscovering the
594 necessity is every process again.
595 Implemented by Ulrich Drepper.
597 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
598 Implemented by Adam Tkac.
600 * Optimized iconv conversions for S390x.
601 Implemented by Andreas Krebbel.
603 * Using condvars with PI mutexes is now more efficient due to kernel
604 support for requeueing to PI futexes. NPTL support added for x86-64.
605 Implemented by Ulrich Drepper.
607 * New locales: ps_AF, my_MM
611 * The following bugs are resolved with this release:
613 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
614 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
615 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
616 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
617 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
619 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
620 Implemented by Ulrich Drepper.
622 * New Linux interfaces: accept4, fallocate, fallocate64.
623 Implemented by Ulrich Drepper.
625 * Correct declarations of string function when used in C++ code. This
626 could lead to compile errors for invalid C++ code.
628 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
631 * New POSIX 2008 interface: psiginfo
632 Implemented by Ulrich Drepper.
634 * New ISO C++1x interfaces: quick_exit, at_quick_exit
635 Implemented by Ulrich Drepper.
637 * Support for selecting between multiple function definitions at runtime
638 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
640 * The libcrypt library can now use the hash function implementations in
641 NSS. Implemented by Ulrich Drepper.
643 * The malloc implementation can be compiled to be less memory efficient
644 but higher performing in multi-threaded programs.
645 Implemented by Ulrich Drepper.
647 * New locales: nan_TW@latin, ks_IN
649 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
650 Implemented by Ulrich Drepper.
652 * Extended printf hook support. It is possible to use user-defined types
653 and extend existing format specifiers.
654 Implemented by Ulrich Drepper.
656 * Handling for group shadow files has been added.
657 Implemented by Ulrich Drepper.
659 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
660 servers (the case, e.g., for some people using the built-in DNS
661 server in ADSL modems/routers). There is a once-per-process timeout
662 in case of a broken server. To avoid it, users can run nscd or put
663 'options single-request' in /etc/resolv.conf.
664 Implemented by Ulrich Drepper.
668 * The following bugs are resolved with this release:
670 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
671 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
672 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
673 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
674 6968, 6974, 6980, 6995, 7008, 7009, 7029
676 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
677 up at the same time. Implemented by Ulrich Drepper.
679 * TLS descriptors for LD and GD on x86 and x86-64.
680 Implemented by Alexandre Oliva.
682 * getaddrinfo now handles DCCP and UDPlite.
683 Implemented by Ulrich Drepper.
685 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
686 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
687 Implemented by Ulrich Drepper.
689 * New implementation of memmem, strstr, and strcasestr which is O(n).
690 Implemented by Eric Blake.
692 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
694 * Implement "e" option for popen to open file descriptor with the
695 close-on-exec flag set. Implemented by Ulrich Drepper.
697 * Implement "b" mode for fmemopen. In this mode writes writes don't
698 implicitly add a NUL byte and seeks from the end of the buffer really
699 use the buffer end, not the string length as the basis.
700 Implemented by Ulrich Drepper.
702 * Many functions, exported and internal, now atomically set the close-on-exec
703 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
705 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
707 Implemented by Pravin Satpute.
709 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
713 * The following bugs are resolved with this release:
715 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
716 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
717 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
718 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
719 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
720 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
721 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
723 * New locales: bo_CN, bo_IN, shs_CA.
725 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
727 * Sorting rules for some Indian languages (Devanagari and Gujarati).
728 Implemented by Pravin Satpute.
730 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
732 * nscd caches now all timeouts for DNS entries
733 Implemented by Ulrich Drepper.
735 * nscd is more efficient and wakes up less often.
736 Implemented by Ulrich Drepper.
738 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
739 vdprintf, and obstack_vprintf.
740 Implemented by Jakub Jelinek.
742 * Faster memset for x86-64.
743 Implemented by Harsha Jagasia and H.J. Lu.
745 * Faster memcpy on x86.
746 Implemented by Ulrich Drepper.
748 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
749 Implemented by Ulrich Drepper.
751 * Faster sqrt and sqrtf implemention for some PPC variants.
752 Implemented by Steven Munroe.
756 * The following bugs are resolved with this release:
758 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
759 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
760 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
761 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
762 5071, 5103, 5104, 5112, 5113, 5184, 5186
764 * More checking functions: fread, fread_unlocked, open*, mq_open.
765 Implemented by Jakub Jelinek and Ulrich Drepper.
767 * Extend fortification to C++. Implemented by Jakub Jelinek.
769 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
770 by not recognizing 'a' as a modifier when those specs are requested.
771 Implemented by Jakub Jelinek.
773 * PPC optimizations to math and string functions.
774 Implemented by Steven Munroe.
776 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
777 options to be passed. Implemented by Ulrich Drepper.
779 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
781 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
782 Implemented by Ulrich Drepper.
784 * Handle private futexes in the NPTL implementation.
785 Implemented by Jakub Jelinek and Ulrich Drepper.
787 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
788 Implemented by Roland McGrath and Ulrich Drepper.
790 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
792 * SHA-256 and SHA-512 based password encryption.
793 Implemented by Ulrich Drepper.
795 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
796 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
799 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
800 Implemented by Ulrich Drepper.
804 * The following bugs are resolved with this release:
806 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
807 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
808 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
809 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
810 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
811 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
812 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
815 * New Linux interfaces: epoll_pwait, sched_getcpu.
817 * New generic interfaces: strerror_l.
819 * nscd can now cache the services database. Implemented by Ulrich Drepper.
823 * The following bugs are resolved with this release:
825 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
826 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
827 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
828 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
829 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
830 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
831 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
832 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
833 3225, 3251, 3252, 3253, 3273
835 * For Linux, the sorting of addresses returned by getaddrinfo now also
836 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
837 Implemented by Ulrich Drepper.
839 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
840 Implemented by Ulrich Drepper.
842 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
844 * New iconv module for MIK. Contributed by Alexander Shopov.
846 * For sites with broken group and/or passwd database, the auto-propagate
847 option of nscd can prevent creating ID lookup entries from the results
848 of a name lookup and vice versa. This usually is no problem but some
849 site might have problems with the default behavior.
850 Implemented by Ulrich Drepper.
852 * Iterating over entire database in NIS can be slow. With the
853 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
854 to trade time for memory. The entire database will be read at once.
855 Implemented by Ulrich Drepper.
857 * The interfaces introduced in RFC 3542 have been implemented by
860 * Support for the new ELF hash table format was added by Ulrich Drepper.
862 * Support for priority inheritance mutexes added by Jakub Jelinek and
865 * Support for priority protected mutexes added by Jakub Jelinek.
867 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
868 or_IN, csb_PL, fy_NL, sr_ME.
872 * More overflow detection functions.
874 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
875 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
877 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
878 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
879 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
880 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
881 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
882 by Masahide Washizawa.
884 * It is now possible to install audit libraries for the dynamic linker using
885 LD_AUDIT. Implemented by Ulrich Drepper.
887 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
888 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
889 For a libc and libpthread that works well on Linux 2.4 kernels, we
890 recommend using the stable 2.3 branch.
892 * The new function open_wmemstream acts like open_memstream,
893 but uses a wchar_t wide character buffer.
895 * The new function ppoll is an improved version of poll, similar to pselect.
897 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
898 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
899 renameat, unlinkat, linkat, symlinkat, readlinkat.
901 * New Linux kernel system calls: unshare,
902 inotify_init, inotify_add_watch, inotify_rm_watch.
904 * The euidaccess function is now also known by the alias eaccess,
905 for compatibility with some other systems.
907 * Timezone data updated to 2006b version.
911 * The following bugs are resolved with this release:
913 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
914 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
915 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
916 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
917 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
918 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
920 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
922 * As of this release, GCC 4 can be used to compile the C Library.
924 * Timezone data updated to 2005m version.
928 * The following bugs are resolved with this release:
930 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
931 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
932 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
933 777, 787, 821, 822, 823, 825
935 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
939 * Support for RFC 3678. Real implementations exist only for Linux so far.
940 Implemented by Ulrich Drepper.
942 * nscd can now cache entries persistently. Expiring entries are reloaded.
943 For speedups the cache can be shared in memory with client processes.
944 Implemented by Ulrich Drepper.
946 * nscd can now perform SELinux checks.
947 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
949 * getaddrinfo queries are now cached. Canonical name lookup is performed
951 Implemented by Ulrich Drepper.
953 * The nothrow function attribute is used when headers are used by gcc when
954 compiling C code. This can avoid significant amounts of exception
957 * The malloc functions perform more error checking and are stricter when
958 it comes to reacting on errors. The default action is to terminate
959 the process after showing an error message. Implemented by Ulrich Drepper.
961 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
962 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
964 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
965 namespaces using the new function dlmopen(). This feature is of course,
966 like most other dynamic loading functionality, not available in statically
967 linked applications. Implemented by Ulrich Drepper.
969 * Low-overhead boundary checking variants of string and some stdio functions
970 were added. These are to be used in conjunction with a gcc patch by
971 Jakub Jelinek which adds calls to these functions if possible.
972 Implemented by Jakub Jelinek and Ulrich Drepper.
974 * Old code for several operating systems and machine architectures that
975 have not been in working condition in a long time have been removed from
976 the main source tree maintained by the GNU C Library's maintainers.
977 These files are now reside in the separate `ports' source module
978 that is usable as an add-on when building the library.
982 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
983 interrogate the dynamic linker, compatible with the Solaris interface.
985 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
986 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
988 * getifaddrs now uses the netlink interface on Linux to get its information.
989 Implemented by Thorsten Kukuk.
991 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
992 Implemented by Ulrich Drepper.
994 * support for non-executable stacks on x86 has been added. Changes mostly
997 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1000 * getaddrinfo now performs destination address selection according to
1005 * Thread-safe interfaces for many functions that access locale data
1006 were added in version 2.3, but these features were omitted from NEWS.
1007 Many functions have variants with an `_l' suffix that take a `locale_t'
1008 object as a parameter rather than consulting the current locale.
1009 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1010 create and maintain `locale_t' objects. Additionally, the new function
1011 `uselocale' sets "the current locale" (as used by functions not so
1012 parameterized) set for an individual thread. These features were added
1013 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1015 * The functions getresuid, getresgid, setresuid, and setresgid, which
1016 have long been available on Linux, are now declared in <unistd.h>
1017 and are now also available on the Hurd.
1019 * ELF thread-local storage support (TLS) now works on x86-64.
1021 * The new dynamic string token $LIB is expanded in shared library names.
1022 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1024 * Aldy Hernandez contributed complete software floating point support for
1025 PowerPC machines with no FPU.
1027 * fexecve is implemented on Linux.
1029 * The `btowc' function should work at least twice as fast due to
1030 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1032 * With approriate thread add-ons cancelable functions are now implemented
1033 in libc.so as well. No need to call the function in libpthread. This
1034 change allowed to finally disable the incorrect and expensive handling
1035 of weak definition in ld.so.
1037 * Yet more PLT entries in libc.so have been removed. We finally arrived
1038 at the bare minimum. Startup times improved appropriately.
1040 * Support for the new Linux/x86 system call interface was added. The
1041 AT_SYSINFO auxiliary vector entry is recognized and handled.
1045 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1048 * iconv (the program and the interface) now accepts empty names (excluding
1049 options like //TRANSLIT) to mean "use charset of current locale".
1051 * localedef can now transliterate characters in strings which are not in
1052 the provided charmap. The information from the input locale is used.
1054 * Prelinking support was added for ELF targets. This requires additional
1055 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1057 * Read-only stdio streams now use mmap to speed up operation by eliminating
1058 copying and buffer underflows. To use add 'm' to the mode string of
1059 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1061 * The malloc functions were completely rewritten by Wolfram Gloger based
1062 on Doug Lea's malloc-2.7.0.c.
1064 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1065 implementation of regex.
1067 * Bruno Haible upgraded the iconv and locale implementation to support
1070 * Contents of the LC_* and LANG environment variables in the CEN style are
1071 not recognized anymore. It never was used. Change by Ulrich Drepper.
1073 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1074 thread-local storage (TLS) ABI on some platforms.
1075 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1077 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1078 EUC-JISX0213, and TSCII.
1080 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1081 BSD-compatible interface for getting all network interface addresses.
1082 Implementation for IPv4 by Roland McGrath.
1084 * Loading of locale data is faster due to the introduction of a locale
1085 archive. Implemented by Roland McGrath and Ulrich Drepper.
1087 * Startup times are significantly reduced by not using exported functions
1088 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1091 * Steven Munroe contributed a port to PowerPC64/Linux.
1095 * The Hurd now uses the GNU libio implementation of stdio rather than the
1096 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1098 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1099 with the same behavior as the Linux system call of the same name.
1103 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1104 128-bit long double format.
1106 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1107 IBM1161, and IBM1162 charsets.
1109 * Andreas Jaeger contributed a port to x86-64/Linux.
1111 * Peter Bruin contributed a port to PowerPC/Hurd.
1113 * libc functions using I/O streams now can handle wide-oriented streams
1116 * optimizations in the dynamic linker. Binaries created by recent binutils
1117 versions start up quicker due to reduced time spent on relocations.
1119 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1123 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1124 asinh, atanh, j0 for the 128-bit long double format.
1126 * Bruno Haible updated all the code handling Unicode in some form to
1127 support Unicode 3.1.
1129 * Speed of regex for single-byte locales is back to previous levels.
1130 Patch by Isamu Hasegawa.
1132 * Alpha, SPARC, and IA-64 now also using floating stacks.
1134 * Startup time of internationalized applications greatly improved through
1135 iconv cache. Use iconvconfig to generate the cache file.
1136 Contributed by Ulrich Drepper.
1138 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1139 severe performance problems. Patch by David Mosberger.
1141 * The Hurd port got a lot more functionality like AIO, various stdio
1142 extensions, etc. Mainly done by Roland McGrath.
1144 * mtrace can now lookup symbols in shared libraries.
1148 * Intel's IA-64 math library is largely integrated. It provides fast and
1149 accurate implementatations for most basic and standard math functions
1150 in float, double, and long double format.
1152 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1153 and asin for the 96-bit long double format and asin, log, tan for the
1154 128-bit long double format.
1156 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1157 The basic double functions exist today. Contributed by Abraham Ziv
1158 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1159 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1161 * An asynchronous name lookup library was added. The interface is designed
1162 after POSIX AIO. The proposal was circulated beforehand to get comments.
1163 No negative ones came in. Implemented by Ulrich Drepper.
1165 * Port to S390/64bit contributed by Martin Schwidefsky
1166 <schwidefsky@de.ibm.com>.
1168 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1169 of functions for Linux/IA-64.
1171 * The RPC code is now thread safe. Threads can now use the same service
1172 of different services at the same time. Patch by Eric Norum
1173 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1175 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1176 family of functions for Linux/S390.
1178 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1179 of functions for Linux/x86.
1181 * Port to Linux/CRIS contributed by Axis Communications.
1185 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1186 we can now check for namespace violations and missing declarations. The
1187 result is that almost all headers are now Unix-compliant (as defined in
1188 the upcoming XPG6). The negative side is that some programs might need
1189 corrections, too, if they depend on the incorrect form of the headers in
1190 previous versions which defined too many symbols and included too many
1193 * regex now handles multibyte character sets correctly.
1194 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1196 * iconv (the program) does now conform to the upcoming XPG6 and handles
1197 charmaps. Instead of the charset names the path of charmaps can be
1198 provided and the conversion happens based on this data.
1199 Contributed by Ulrich Drepper.
1201 * The locale program now provides detailed information about the installed
1206 only lists the names of the supported locales
1210 provides details such as country, language, and codeset name.
1211 Contributed by Ulrich Drepper.
1215 * The gencat program now parses the input file according to the charset
1216 selected by the LC_CTYPE category. This is important for stateful
1217 character sets. To make generating catalogs easier there is a way
1218 to overwrite the charset selected by the locale: before the first
1219 message or $ quote line the catalog can contain a line like
1221 $ codeset=ISO-8859-2
1223 to select the charset (ISO-8859-2 in this case).
1225 Implemented by Shinya Hanataka and Ulrich Drepper.
1227 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1228 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1229 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1231 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1232 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1234 * The LANGUAGE environment variable is now ignored unless the locale is
1235 changed from the default "C" locale.
1237 * The usual bug fixes.
1241 * Greg McGary added runtime support for bounds checking using gcc's
1242 new -fbounded-pointers option. ix86 target is complete. PowerPC
1245 * Thorsten Kukuk added secure mode support to nscd.
1247 * The Berkeley db libraries have been removed.
1249 Related, the nss_db module is now in a separate package since it
1250 obviously requires a database library being available.
1252 * Wide character I/O streams implemented by Ulrich Drepper.
1254 * Functions from the extended socket API added by Ulrich Drepper.
1256 * Functions feenableexcept and fedisableexcept to control the
1257 behaviour of individual exceptions have been added by Andreas Jaeger.
1259 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1261 * The resolver code has been updated from bind 8.2.3-T5B which supports
1262 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1265 This change could in some situations effect backward compatibility. Since
1266 now `_res' is a thread-local instead of a global variable, modifying it
1267 in one thread does not have any effect in other threads.
1269 The resolver library was also extended to allow IPv6 as the transport
1270 protocol for the requests. This work was done by Stig Venaas.
1272 * Compatibility code for K&R C compilers has been removed from the
1273 header files. A ISO C compiler is needed to use the library
1274 (conforming to either C89 or C99 standard).
1276 * Complete rewrite of the localedef program to support multibyte character
1277 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1278 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1279 Implemented by Ulrich Drepper.
1281 Bruno Haible significantly improved the generation and use of the data
1282 structures for the wide character tables.
1284 * Plural handling in gettext implemented by Ulrich Drepper.
1286 * The utmp daemon has been removed.
1288 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1290 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1293 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1295 * POSIX barriers implemented by Kaz Kylheku.
1297 * POSIX spawn function family implemented by Ulrich Drepper.
1299 * POSIX spinlocks are now available.
1301 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1303 * the configure option --enable-kernel=X.Y.Z allows to strip out
1304 compatibility for kernel versions before X.Y.Z. This is currently only
1305 implemented for Linux.
1307 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1308 field sin6_scope_id. This means that all programs using IPv6 should be
1309 recompiled. Don't expect binary compatibility with previous glibc
1312 * various conversion modules for IBM character sets contributed by
1315 * IA-64 port by Jes Sorensen and HJ Lu.
1329 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1331 * New xdr functions are added; some rpc functions are now 64bit clean.
1333 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1335 * Fixed known incompatibilities with glibc 2.0.
1337 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1339 * Optimized a number of functions (especially the ELF dynamic loader).
1341 * Update timezone data files.
1343 * lots of charmaps corrections
1345 * some new locale definitions and charmaps
1350 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1351 conform to POSIX member type requirements. Symbol versions have been
1352 adjusted as needed within the library, and for direct use by applications,
1353 but there is potential for problems if third-party libraries use
1354 struct timeval as part of their interface. This does not present
1355 a problem for X and other "essential" system libraries.
1357 * An additional locale model to support C++ Standard Library locale
1358 model and probably more was implemented by Ulrich Drepper.
1360 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1363 * Miles Bader provided the `argp' function family to support hierachical
1364 command line argument parsing, layered on top of getopt.
1366 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1368 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1371 * scanf recognizes the %a and %A format for scanning floating point numbers.
1373 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1374 information and interfaces for the available integer types.
1376 * about 130 new math functions were added to implement the ISO C9x math
1379 * the new header <complex.h> contains definitions of the complex math
1380 functions from ISO C 9X.
1382 * the new header <tgmath.h> defines generic macros to use complex or
1383 real valued functions.
1385 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1387 * Andreas Jaeger provided a test suite for the math library.
1389 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1391 * Ulrich Drepper added character set conversion functions (iconv).
1393 * Optimized string functions have been added.
1395 * The localedata addon is now part of glibc.
1397 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1399 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1400 daemon for NSS (nscd).
1402 Missing a better place here are some numbers on improvements. Under
1403 Linux 2.1.125 un-tar-ing the kernel sources takes
1407 using local files 12.19s 6.88s 22.91s
1409 using NIS 13.92s 8.91s 26.34s
1411 using NIS & nscd 10.37s 7.34s 25.30s
1413 using NIS+ 27.57s 30.37s 640.46s
1415 using NIS+ & nscd 10.25s 7.83s 26.51s
1417 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1419 Keep in mind that non-namelookup related operations dominate above times.
1420 It was just a common complain that using NIS+ unpacking the kernel is
1423 [1] The old nscd implementation is not available anymore since it was
1424 distributed with glibc up to version 2.0.98 and thus is now replaced.
1426 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1428 * Mark Kettenis provided a Hesiod NSS module.
1430 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1431 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1433 * rcmd can now handle netgroups (Dick Streefland).
1435 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1438 * Support for the IPv6 protocol has been added to the socket API, as per the
1439 latest draft standards.
1441 * Support for Linux 2.2 has been added.
1443 * Interface changes relative to the latest 2.0.x release:
1444 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1445 addseverity NEW: Unix98
1446 alphasort64 NEW: LFS
1447 argp_err_exit_status NEW: argp, GNU ext
1448 argp_error NEW: argp, GNU ext
1449 argp_failure NEW: argp, GNU ext
1450 argp_help NEW: argp, GNU ext
1451 argp_parse NEW: argp, GNU ext
1452 argp_program_bug_address NEW: argp, GNU ext
1453 argp_program_version NEW: argp, GNU ext
1454 argp_program_version_hook NEW: argp, GNU ext
1455 argp_state_help NEW: argp, GNU ext
1456 argp_usage NEW: argp, GNU ext
1457 authdes_create NEW: Secure RPC
1458 authdes_getucred NEW: Secure RPC
1459 authdes_pk_create NEW: Secure RPC
1460 backtrace NEW: GNU ext.
1461 backtrace_symbols NEW: GNU ext.
1462 backtrace_symbols_fd NEW: GNU ext.
1464 cacosf NEW: ISO C 9x
1465 cacosh NEW: ISO C 9x
1466 cacoshf NEW: ISO C 9x
1467 cacoshl NEW: ISO C 9x
1468 cacosl NEW: ISO C 9x
1475 casinf NEW: ISO C 9x
1476 casinh NEW: ISO C 9x
1477 casinhf NEW: ISO C 9x
1478 casinhl NEW: ISO C 9x
1479 casinl NEW: ISO C 9x
1481 catanf NEW: ISO C 9x
1482 catanh NEW: ISO C 9x
1483 catanhf NEW: ISO C 9x
1484 catanhl NEW: ISO C 9x
1485 catanl NEW: ISO C 9x
1486 cbc_crypt NEW: Secure RPC
1490 ccoshf NEW: ISO C 9x
1491 ccoshl NEW: ISO C 9x
1497 cimagf NEW: ISO C 9x
1498 cimagl NEW: ISO C 9x
1499 clearerr_locked REMOVED
1500 clntunix_create NEW: sunrpc ext
1502 clog10 NEW: ISO C 9x
1503 clog10f NEW: ISO C 9x
1504 clog10l NEW: ISO C 9x
1514 cprojf NEW: ISO C 9x
1515 cprojl NEW: ISO C 9x
1517 crealf NEW: ISO C 9x
1518 creall NEW: ISO C 9x
1523 csinhf NEW: ISO C 9x
1524 csinhl NEW: ISO C 9x
1527 csqrtf NEW: ISO C 9x
1528 csqrtl NEW: ISO C 9x
1532 ctanhf NEW: ISO C 9x
1533 ctanhl NEW: ISO C 9x
1535 des_setparity NEW: Secure RPC
1536 ecb_crypt NEW: Secure RPC
1537 endutxent NEW: Unix98
1539 exp10f NEW: ISO C 9x
1540 exp10l NEW: ISO C 9x
1544 fattach NEW: STREAMS
1545 fdetach NEW: STREAMS
1549 feclearexcept NEW: ISO C 9x
1550 fegetenv NEW: ISO C 9x
1551 fegetexceptflag NEW: ISO C 9x
1552 fegetround NEW: ISO C 9x
1553 feholdexcept NEW: ISO C 9x
1555 feraiseexcept NEW: ISO C 9x
1556 ferror_locked REMOVED
1557 fesetenv NEW: ISO C 9x
1558 fesetexceptflag NEW: ISO C 9x
1559 fesetround NEW: ISO C 9x
1560 fetestexcept NEW: ISO C 9x
1561 feupdateenv NEW: ISO C 9x
1562 fflush_locked REMOVED
1566 fgets_unlocked NEW: GNU ext.
1567 fileno_locked REMOVED
1579 fputc_locked REMOVED
1580 fputs_unlocked NEW: GNU ext.
1581 fread_unlocked NEW: GNU ext.
1586 fstatvfs NEW: Unix98
1590 ftruncate64 NEW: LFS
1592 fwrite_unlocked NEW: GNU ext.
1593 gai_strerror NEW: IPv6
1597 getchar_locked REMOVED
1599 getdate_err NEW: Unix98
1600 getdate_r NEW: GNU ext.
1602 getnameinfo NEW: IPv6
1603 getnetname NEW: Secure RPC
1604 getpmsg NEW: STREAMS
1605 getpt NEW: Unix98 PTY
1606 getrlimit64 NEW: LFS
1607 getutxent NEW: Unix98
1608 getutxid NEW: Unix98
1609 getutxline NEW: Unix98
1610 glob64 NEW: GNU ext.
1611 globfree64 NEW: GNU ext.
1612 gnu_get_libc_release NEW: GNU ext.
1613 gnu_get_libc_version NEW: GNU ext.
1614 grantpt NEW: Unix98 PTY
1615 host2netname NEW: Secure RPC
1617 iconv_close NEW: iconv
1618 iconv_open NEW: iconv
1619 if_freenameindex NEW: IPv6
1620 if_indextoname NEW: IPv6
1621 if_nameindex NEW: IPv6
1622 if_nametoindex NEW: IPv6
1623 in6addr_any NEW: IPv6
1624 in6addr_loopback NEW: IPv6
1625 inet6_isipv4mapped NEW: IPv6
1626 isastream NEW: STREAMS
1627 iswblank NEW: GNU ext.
1628 key_decryptsession NEW: Secure RPC
1629 key_decryptsession_pk NEW: Secure RPC
1630 key_encryptsession NEW: Secure RPC
1631 key_encryptsession_pk NEW: Secure RPC
1632 key_gendes NEW: Secure RPC
1633 key_get_conv NEW: Secure RPC
1634 key_secretkey_is_set NEW: Secure RPC
1635 key_setnet NEW: Secure RPC
1636 key_setsecret NEW: Secure RPC
1637 llrint NEW: ISO C 9x
1638 llrintf NEW: ISO C 9x
1639 llrintl NEW: ISO C 9x
1640 llround NEW: ISO C 9x
1641 llroundf NEW: ISO C 9x
1642 llroundl NEW: ISO C 9x
1647 lrintf NEW: ISO C 9x
1648 lrintl NEW: ISO C 9x
1649 lround NEW: ISO C 9x
1650 lroundf NEW: ISO C 9x
1651 lroundl NEW: ISO C 9x
1653 makecontext NEW: Unix98
1654 mempcpy NEW: GNU ext.
1657 modify_ldt NEW: kernel
1661 nearbyint NEW: ISO C 9x
1662 nearbyintf NEW: ISO C 9x
1663 nearbyintl NEW: ISO C 9x
1664 netname2host NEW: Secure RPC
1665 netname2user NEW: Secure RPC
1666 nexttoward NEW: ISO C 9x
1667 nexttowardf NEW: ISO C 9x
1668 nexttowardl NEW: ISO C 9x
1672 passwd2des NEW: Secure RPC
1674 pow10f NEW: GNU ext.
1675 pow10l NEW: GNU ext.
1678 printf_size NEW: GNU ext.
1679 printf_size_info NEW: GNU ext.
1680 profil_counter REMOVED
1681 pthread_mutexattr_getkind_np REPLACED
1682 pthread_mutexattr_setkind_np REPLACED
1683 ptsname NEW: Unix98 PTY
1684 ptsname_r NEW: Unix98 PTY
1686 putchar_locked REMOVED
1687 putgrent NEW: GNU ext.
1689 putpmsg NEW: STREAMS
1690 pututxline NEW: Unix98
1694 readdir64_r NEW: LFS
1695 remquo NEW: ISO C 9x
1696 remquof NEW: ISO C 9x
1697 remquol NEW: ISO C 9x
1699 roundf NEW: ISO C 9x
1700 roundl NEW: ISO C 9x
1702 scalbln NEW: ISO C 9x
1703 scalblnf NEW: ISO C 9x
1704 scalblnl NEW: ISO C 9x
1706 sendfile NEW: kernel
1707 setcontext NEW: Unix98
1708 setrlimit64 NEW: LFS
1709 setutxent NEW: Unix98
1711 sigignore NEW: Unix98
1712 sigqueue NEW: POSIX.1b
1713 sigrelse NEW: Unix98
1714 sigset NEW: POSIX.1b
1715 sigtimedwait NEW: POSIX.1b
1716 sigwaitinfo NEW: POSIX.1b
1717 sincos NEW: GNU ext.
1718 sincosf NEW: GNU ext.
1719 sincosl NEW: GNU ext.
1723 strcasestr NEW: GNU ext.
1724 strtoimax NEW: ISO C 9x
1725 strtoumax NEW: ISO C 9x
1726 strverscmp NEW: GNU ext.
1727 svcauthdes_stats NEW: Secure RPC
1728 svcunix_create NEW: sunrpc etx
1729 svcunixfd_create NEW: sunrpc ext
1730 swapcontext NEW: Unix98
1731 tcgetsid NEW: Unix98 PTY
1732 tdestroy NEW: GNU ext.
1733 tgamma NEW: ISO C 9x
1734 tgammaf NEW: ISO C 9x
1735 tgammal NEW: ISO C 9x
1739 truncf NEW: ISO C 9x
1740 truncl NEW: ISO C 9x
1742 unlockpt NEW: Unix98 PTY
1743 updwtmpx NEW: Unix98
1744 user2netname NEW: Secure RPC
1745 utmpxname NEW: Unix98
1746 versionsort NEW: GNU ext.
1747 versionsort64 NEW: GNU ext.
1749 wcscasecmp NEW: GNU ext.
1750 wcsncasecmp NEW: GNU ext.
1751 wcsnlen NEW: GNU ext.
1752 wcstoimax NEW: ISO C 9x
1753 wcstoll NEW: ISO C 9x
1754 wcstoull NEW: ISO C 9x
1755 wcstoumax NEW: ISO C 9x
1757 wordexp NEW: POSIX.2
1758 wordfree NEW: POSIX.2
1759 write_profiling REMOVED
1760 xdecrypt NEW: Secure RPC
1761 xdr_authdes_cred NEW: Secure RPC
1762 xdr_authdes_verf NEW: Secure RPC
1763 xdr_cryptkeyarg NEW: Secure RPC
1764 xdr_cryptkeyarg2 NEW: Secure RPC
1765 xdr_cryptkeyres NEW: Secure RPC
1766 xdr_getcredres NEW: Secure RPC
1767 xdr_key_netstarg NEW: Secure RPC
1768 xdr_key_netstres NEW: Secure RPC
1769 xdr_keybuf NEW: Secure RPC
1770 xdr_keystatus NEW: Secure RPC
1771 xdr_netnamestr NEW: Secure RPC
1772 xdr_sizeof NEW: Secure RPC
1773 xdr_unixcred NEW: sunrpc ext
1774 xencrypt NEW: Secure RPC
1775 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1786 * inet_ntoa is thread-safe
1788 * updwtmp is moved from libutil to libc
1790 * rewrite of cbrt function
1792 * update of timezone data
1806 * add atoll function
1808 * fix complex problems in Berkeley DB code
1810 * fix math functions
1814 * fixed lots of header problems (especially Linux/GNU specific)
1816 * dynamic loader preserves all registers
1818 * Roland McGrath provided support for handling of auxiliary objects in
1819 the ELF dynamic loader.
1821 * support for parallel builds is improved
1825 * GNU extensions are no longer declared by default. To enable them you
1826 must define the macro `_GNU_SOURCE' in your program or compile with
1829 * The library has changed from using GNU ld symbol aliases to using weak
1830 symbols where available. The ELF object file format supports weak
1831 symbols; GNU ld also supports weak symbols in the a.out format. (There
1832 is also now support for other GNU ld extensions in ELF. Use the
1833 `--with-elf' option to configure to indicate you have ELF, and
1834 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1835 of many files which contained only symbol aliases, reducing the size of
1836 the source and the compiled library; many other files were renamed to
1837 less cryptic names previously occupied by the symbol alias files.
1838 There is a new header file <elf.h> for programs which operate on
1839 files in the ELF format.
1841 * Converted to Autoconf version 2, so `configure' has more options.
1842 Run `configure --help' to see the details.
1844 * The library can now be configured to build profiling, highly-optimized
1845 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1846 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1847 `configure' enable building these extra libraries. The shared library is
1848 built by default when using both ELF and GNU ld. When shared libraries
1849 are enabled, the new library `-ldl' is available for arbitrary run-time
1850 loading of shared objects; its interface is defined in <dlfcn.h>. The
1851 new header file <link.h> gives access to the internals of the run-time
1852 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1853 application of same name on other systems and it provides information
1854 about dynamically linked binaries.
1856 * The C library now provides the run-time support code for profiling
1857 executables compiled with `-pg'. Programs can control the profiling code
1858 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1859 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1860 the support for this file format was contributed by David Mosberger-Tang.
1862 * The math code has been replaced with a math library based on fdlibm from
1863 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1864 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1865 functions. The math functions now reside in a separate library, so
1866 programs using them will need to use `-lm' their linking commands.
1868 * John C. Bowman contributed optimized ix87 assembler inline functions.
1870 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1871 mechanism similar to that found in Solaris 2. This is now used for the
1872 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1873 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1874 file controls what services are used for each individual database. This
1875 works by loading shared libraries with names specified in `nsswitch.conf',
1876 so service modules can be changed or added at any time without even
1877 relinking any program. Currently there are the file, db, and NIS based
1878 NSS services available.
1880 * The new functions `strtoq' and `strtouq' parse integer values from
1881 strings, like `strtol' and `strtoul', but they return `long long int' and
1882 `unsigned long long int' values, respectively (64-bit quantities).
1884 * The new functions `strtof' and `strtold' parse floating-point values from
1885 strings, like `strtod', but they return `float' and `long double' values,
1886 respectively (on some machines `double' and `long double' are the same).
1888 * Ulrich Drepper has contributed new implementations of the floating-point
1889 printing and reading code used in the `printf' family of functions and
1890 `strtod', `strtof', and `strtold'. These new functions are perfectly
1891 accurate, and much faster than the old ones.
1893 * The implementation of the POSIX locale model was completely rewritten by
1894 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1895 to compile the POSIX locale definition.
1897 * The former dummy implementations of the strcoll and strxfrm function are
1898 now replaced by fully functional code contributed by Ulrich Drepper. The
1899 collation information comes from the POSIX locale definitions.
1901 * The new header <langinfo.h> defines an interface for accessing
1902 various locale-dependent data (using the locale chosen with `setlocale').
1904 * Ulrich Drepper has contributed a new suite of functions for operation on
1905 wide-character and multibyte-character strings, in <wchar.h>;
1906 and classification and case conversion of wide characters, in <wctype.h>.
1907 These new functions are conforming to the ISO C, Amendement 1 specification.
1909 * There is now a second implementation of the standard I/O library available.
1910 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1911 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1913 * You can now use positional parameter specifications in format strings
1914 for the `printf' and `scanf' families of functions. For example,
1915 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1916 ``Number 6, Mr Jones''. This is mainly useful when providing different
1917 format strings for different languages, whose grammars may dictate
1918 different orderings of the values being printed. To support this
1919 feature, the interface for `register_printf_handler' has changed; see
1920 the header file <printf.h> for details.
1922 * The `printf' and `scanf' families of functions now understand a new
1923 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1924 to group numbers as indicated by the locale; for `scanf' and friends, this
1925 says to accept as valid only a number with all the proper grouping
1926 separators in the right places. In the default "C" locale, numbers are
1927 not grouped; but locales for specific countries will define the usual
1928 conventions (i.e. separate thousands with `,' in the US locale).
1930 * The pgrp functions have been regularized, slightly incompatibly but much
1931 less confusingly. The core functions are now `getpgid' and `setpgid',
1932 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1933 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1934 provided for compatibility. There is no longer an incompatible `getpgrp'
1935 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1937 * The new header file <fts.h> and suite of functions simplify programs that
1938 operate on directory trees. This code comes from 4.4 BSD.
1940 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1941 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1942 NSS scheme used in glibc.
1944 * There is a new malloc debugging hook `__memalign_hook'.
1946 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1947 `unsigned int' in <sys/types.h>. These are for compatibility only and
1948 their use is discouraged.
1950 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1951 done differently, so that it works even without GNU ld.
1953 * New function `euidaccess' checks allowed access to a file like `access',
1954 but using the effective IDs instead of the real IDs.
1956 * The time zone data files have been updated for the latest and greatest
1957 local time conventions of the countries of the world.
1959 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1962 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1963 for formatting floating-point numbers. They are provided only for
1964 compatibility; new programs should use `sprintf' instead. There are
1965 also equivalent function for the `long double' floating-point type and
1966 all functions also exist in a reentrant form.
1968 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1969 functions for maintaining the login-record files (primarily of use to
1970 system programs such as `login'), and convenient functions for
1971 allocating and initializing a pseudo-terminal (pty) device.
1973 * Ulrich Drepper has contributed new support for System V style
1974 shared memory and IPC on systems that support it.
1976 * Ulrich Drepper has contributed several miscellaneous new functions found
1977 in System V: The `hsearch' family of functions provide an effective
1978 implementation of hash tables; `a64l' and `l64a' provide a very simple
1979 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1982 * Ulrich Drepper has contributed new reentrant counterparts for the
1983 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1985 * Ulrich Drepper has contributed new, highly-optimized versions of several
1986 string functions for the i486/Pentium family of processors.
1988 * Ulrich Drepper has updated the Linux-specific code, based largely
1989 on work done in Hongjiu Lu's version of GNU libc for Linux.
1990 The GNU library now supports Linux versions 2.0.10 and later,
1991 using the ELF object file format (i[3456]86-*-linux).
1993 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1995 * David Mosberger-Tang and Richard Henderson have ported the C library
1996 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1997 dynamic linking support for ELF/Alpha.
1999 * Richard Henderson contributed several Alpha optimized assembler function
2000 for arithmetic and string handling.
2002 * Ulrich Drepper has contributed a new set of message catalog functions to
2003 support multiple languages using the <libintl.h> interface, for use with
2004 his new package GNU gettext. Translation volunteers have contributed
2005 catalogs of the library's messages in Spanish, German, and Korean.
2007 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2008 program and the `catgets' function for reading the catalog files it
2009 creates. (The <libintl.h> interface is preferred; we include the
2010 <nl_types.h> interface using `catgets' only for source compatibility with
2011 programs already written to use it.)
2013 * New header file <values.h> gives SVID-compatible names for <limits.h>
2016 * Various new macros, declarations, and small header files for compatibility
2019 * New function `group_member' is a convenient way to check if a process has
2020 a given effective group ID.
2022 * When using GCC 2.7 and later, the socket functions are now declared in a
2023 special way so that passing an argument of type `struct sockaddr_in *',
2024 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2025 `struct sockaddr *' type, does not generate a type-clash warning.
2027 * New function `error' declared in header file <error.h> is a convenient
2028 function for printing error messages and optionally exiting; this is the
2029 canonical function used in GNU programs. The new functions `err', `warn',
2030 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2031 doing the same thing.
2033 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2034 POSIX.2 `glob' function to do ~ and {...} expansion.
2036 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2037 `clearenv' which is used in POSIX.9 is also available.
2039 * New function `getsid' returns session ID number on systems that support it.
2041 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2042 files <db.h> and <mpool.h> provide a rich set of functions for several
2043 types of simple databases stored in memory and in files, and <ndbm.h> is
2044 an old `ndbm'-compatible interface using the `db' functions. Link with
2045 `-ldb' to get these functions.
2047 * New macro `strdupa' copies a string like `strdup', but uses local stack
2048 space from `alloca' instead of dynamic heap space from `malloc'.
2050 * New function `strnlen' is like `strlen' but searches only a given maximum
2051 number of characters for the null terminator. `stpncpy', `strndup' and
2052 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2055 * New function `statfs' in header <sys/statfs.h>.
2057 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2058 provide convenient functions for operating on blocks of null-terminated
2061 * A new suite of functions in <utmp.h> handle all the details of reading
2062 and writing the utmp file.
2064 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2067 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2068 completely POSIX compliant and also implemented the extended functionality
2069 to handle alternate digit representation and alternate era date formats.
2071 * Ulrich Drepper provided an implementation of the `strptime' function
2072 defined in XPG4.2 which transforms a string into a `struct tm' value.
2074 * Paul Eggert provided the tzselect shell script as part of the timezone
2075 code. The shell script makes it easy to select the correct timezone
2078 * The implementation of the malloc family of functions is completely replaced
2079 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2080 The implementation uses the mmap function (if available) and it is
2081 optimized for the use in multi threaded programs.
2083 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2084 functions. This new functionality is usable by specifying a special
2085 salt string and it is compatible with implementation on *BSD systems.
2087 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2088 `getsubopt' to handle second level command line options, `bsd_signal'
2089 to access BSD style `signal' functionality, the obsolete `regexp' style
2092 * the `lchown' function is available on system which support this
2095 * The implementation of the shadow password handling function was contributed
2098 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2100 * POSIX.1g support was added. The <sys/select.h> header is available,
2101 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2102 implementation of `getaddrinfo'.
2106 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2108 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2109 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2111 * The new function `daemon' from 4.4 BSD is useful for server programs that
2112 want to put themselves in the background.
2114 * Joel Sherrill has contributed support for several standalone boards that
2115 run without an operating system.
2117 * `printf', `scanf' and friends now accept a `q' type modifier for long
2118 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2120 * All of the code taken from BSD (notably most of the math and networking
2121 routines) has been updated from the BSD 4.4-Lite release.
2123 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2125 * The new functions `getdomainname' and `setdomainname' fetch or change the
2126 YP/NIS domain name. These are system calls which exist on systems which
2129 * The time zone data files have been updated for the latest international
2132 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2133 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2137 * The C library now includes support for Sun RPC, from Sun's free
2138 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2139 are included. (There is still no support for YP.)
2141 * Tom Quinn has contributed a port of the C library to SGI machines running
2142 Irix 4 (mips-sgi-irix4).
2144 * The new `lockf' function is a simplified interface to the locking
2145 facilities of `fcntl', included for compatibility.
2147 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2149 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2151 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2154 * The error message printed by `assert' for a failed assertion now includes
2155 the name of the program (if using GNU ld) and the name of the calling
2156 function (with versions of GCC that support this).
2158 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2160 * The library now includes the <sys/mman.h> header file and memory
2161 management functions `mmap', `munmap', `mprotect', `msync', and
2162 `madvise', on systems that support those facilities.
2164 * The interface for `mcheck' has changed slightly: the function called to
2165 abort the program when an allocation inconsistency is detected now takes
2166 an argument that indicates the type of failure. The new function
2167 `mprobe' lets you request a consistency check for a particular block at
2168 any time (checks are normally done only when you call `free' or `realloc'
2171 * It is now possible to easily cross-compile the C library, building on one
2172 system a library to run on another machine and/or operating system. All
2173 you need to do is set the variable `HOST_CC' in `configparms' to the
2174 native compiler for programs to run on the machine you are building on (a
2175 few generator programs are used on Unix systems); set `CC' to the
2178 * The new function `fexecve' (only implemented on the GNU system) executes
2179 a program file given a file descriptor already open on the file.
2183 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2184 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2186 * You can set the variable `libprefix' in `configparms' to specify a prefix
2187 to be prepended to installed library files; this makes it easy to install
2188 the GNU C library to be linked as `-lgnuc' or whatever.
2190 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2191 copies a limited number of characters from a string, and returns the
2192 address of the last character written.
2194 * You no longer need to check for whether the installed `stddef.h' is
2195 compatible with the GNU C library. configure now checks for you.
2197 * You can now define a per-stream `fileno' function to convert the
2198 stream's cookie into an integral file descriptor.
2200 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2201 allocates zero bytes of storage, and returns a unique pointer which
2202 you can pass to `realloc' or `free'. The behavior is undefined if
2203 you dereference this pointer.
2205 * The C library now runs on Sony NEWS m68k machines running either
2206 NewsOS 3 or NewsOS 4.
2208 * The new `syscall' function is a system-dependent primitive function
2209 for invoking system calls. It has the canonical behavior on Unix
2210 systems, including unreliable return values for some calls (such as
2211 `pipe', `fork' and `getppid').
2213 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2214 to `EAGAIN', which is the preferred name. On systems whose kernels
2215 use two distinct codes, the C library now translates EWOULDBLOCK to
2216 EAGAIN in every system call function.
2220 * The GNU C Library Reference Manual is now distributed with the library.
2221 `make dvi' will produce a DVI file of the printed manual.
2222 `make info' will produce Info files that you can read on line using C-h i
2223 in Emacs or the `info' program.
2224 Please send comments on the manual to bug-glibc-manual@gnu.org.
2226 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2228 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2230 * Jason Merrill has contributed a port to the Sequent Symmetry running
2231 Dynix version 3 (i386-sequent-dynix).
2233 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2234 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2236 * New function `memory_warnings' lets you arrange to get warnings when
2237 malloc is running out of memory to allocate, like Emacs gives you.
2239 * The C library now contains the relocating allocator used in Emacs 19 for
2240 its editing buffers. This allocator (ralloc) minimizes allocation
2241 overhead and fragmentation by moving allocated regions around whenever it
2242 needs to. You always refer to a ralloc'd region with a "handle" (a
2243 pointer to a pointer--an object of type `void **').
2245 * There is a new `printf' format: `%m' gives you the string corresponding
2246 to the error code in `errno'.
2248 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2249 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2250 pass, the `a' modifier says to fill in a `char **' you pass with a
2253 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2254 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2255 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2257 * `mkstemp' is a traditional Unix function to atomically create and open a
2258 uniquely-named temporary file.
2262 * The standard location for the file that says what the local timezone is
2263 has changed again. It is now `/usr/local/etc/localtime' (or more
2264 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2266 * The distribution no longer contains any files with names longer than 14
2269 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2270 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2272 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2276 * The configuration process has changed quite a bit. The `configure'
2277 script is now used just like the configuration scripts for other GNU
2278 packages. The `sysdeps' directory hierarchy is much rearranged.
2279 The file `INSTALL' explains the new scheme in detail.
2281 * The header files no longer need to be processed into ANSI C and
2282 traditional C versions. There is just one set of files to install, and
2283 it will work with ANSI or old C compilers (including `gcc -traditional').
2285 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2286 MIPS DECStation running Ultrix 4.
2288 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2289 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2290 made itself into a shared library.
2292 * Yet further improved support for the i386, running 4.3 BSD-like systems
2293 (such as Mach 3 with the Unix single-server), or System V.
2295 * New function `strncasecmp' to do case-insensitive string comparison
2296 with limited length.
2298 * New function `strsep' is a reentrant alternative to `strtok'.
2300 * New functions `scandir' and `alphasort' for searching directories.
2302 * New function `setenv' is a better interface to `putenv'.
2304 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2305 function for traversing a directory tree.
2307 * The GNU obstack package is now also part of the C library.
2308 The new function `open_obstack_stream' creates a stdio stream that
2309 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2310 formatted output directly to an obstack.
2312 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2313 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2315 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2317 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2318 things to your strings.
2320 * There are some new test programs: test-fseek, testmb, and testrand.
2322 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2323 These ports are not finished, but are a good starting place for really
2324 supporting those systems.
2326 * `/etc/localtime' is now the standard location for the file that says what
2327 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2328 This follows the general principle that `/etc' is the place for all local
2329 configuration files.
2331 * The C library header files now use `extern "C"' when used by the C++
2332 compiler, so the C library should now work with C++ code.
2334 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2335 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2338 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2339 function which uses the `merge sort' algorithm, and is said to be
2340 significantly faster than the old GNU `qsort' function. Merge sort is
2341 now the standard `qsort' function. The new algorithm can require a lot
2342 of temporary storage; so, the old sorting function is called when the
2343 required storage is not available.
2345 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2346 provides the Unix `crypt' function, plus some other entry points.
2348 * The code and header files taken from 4.4 BSD have been updated with the
2349 latest files released from Berkeley.
2351 ----------------------------------------------------------------------
2352 Copyright information:
2354 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2356 Permission is granted to anyone to make or distribute verbatim copies
2357 of this document as received, in any medium, provided that the
2358 copyright notice and this permission notice are preserved,
2359 thus giving the recipient permission to redistribute in turn.
2361 Permission is granted to distribute modified versions
2362 of this document, or of portions of it,
2363 under the above conditions, provided also that they
2364 carry prominent notices stating who last changed them.
2367 version-control: never