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, 11157, 10253, 10278, 11087, 13028,
13 13982, 13985, 14029, 14143, 14155, 14547, 14699, 14752, 14876, 14910,
14 15048, 15218, 15277, 15308, 15362, 15374, 15400, 15427, 15483, 15522,
15 15531, 15532, 15601, 15608, 15609, 15610, 15632, 15640, 15670, 15672,
16 15680, 15681, 15723, 15734, 15735, 15736, 15748, 15749, 15754, 15760,
17 15763, 15764, 15797, 15799, 15825, 15844, 15847, 15849, 15855, 15856,
18 15857, 15859, 15867, 15886, 15887, 15890, 15892, 15893, 15895, 15897,
19 15905, 15909, 15917, 15919, 15921, 15923, 15939, 15948, 15963, 15966,
20 15985, 15988, 15997, 16032, 16034, 16036, 16037, 16041, 16055, 16071,
21 16072, 16074, 16078, 16103, 16112, 16143, 16144, 16146, 16150, 16151,
24 * CVE-2012-4412 The strcoll implementation caches indices and rules for
25 large collation sequences to optimize multiple passes. This cache
26 computation may overflow for large collation sequences and may cause a
27 stack or buffer overflow. This is now fixed to use a slower algorithm
28 which does not use a cache if there is an integer overflow.
30 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
31 rules for large collation sequences to optimize multiple passes and falls
32 back to alloca if malloc fails, resulting in a possible stack overflow.
33 The implementation now falls back to an uncached collation sequence lookup
36 * CVE-2013-4788 The pointer guard used for pointer mangling was not
37 initialized for static applications resulting in the security feature
38 being disabled. The pointer guard is now correctly initialized to a
39 random value for static applications. Existing static applications need
40 to be recompiled to take advantage of the fix (bug 15754).
42 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
43 to the d_name member of struct dirent, or omit the terminating NUL
44 character. (Bugzilla #14699).
46 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
47 aligned_alloc functions could allocate too few bytes or corrupt the
48 heap when passed very large allocation size values (Bugzilla #15855,
51 * CVE-2013-4458 Stack overflow in getaddrinfo with large number of results
52 for AF_INET6 has been fixed (Bugzilla #16072).
54 * New locales: ak_GH, anp_IN, ar_SS, cmn_TW, hak_TW, lzh_TW, nan_TW, pap_AW,
55 pap_CW, quz_PE, the_NP.
57 * Substantially revised locales: gd_GB, ht_HT
59 * The LC_ADDRESS field was updated to support country_car for almost all
62 * ISO 1427 definitions were updated.
64 * ISO 3166 definitions were updated.
66 * The localedef utility now supports --big-endian and --little-endian
67 command-line options to generate locales for a different system from that
68 for which the C library was built.
70 * Binary locale files now only depend on the endianness of the system for
71 which they are generated and not on other properties of that system. As a
72 consequence, binary files generated with new localedef may be incompatible
73 with old versions of the GNU C Library, and binary files generated with
74 old localedef may be incompatible with this version of the GNU C Library,
75 in the following circumstances:
77 + Locale files may be incompatible on m68k systems.
79 + Locale archive files (but not separate files for individual locales) may
80 be incompatible on systems where plain "char" is signed.
82 * The configure option --disable-versioning has been removed. Builds with
83 --disable-versioning had not worked for several years.
85 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
86 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
88 * SystemTap probes for malloc have been introduced.
90 * Support for powerpc64le has been added.
92 * The soft-float powerpc port now supports e500 processors.
96 * The following bugs are resolved with this release:
98 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
99 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
100 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
101 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
102 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
103 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
104 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
105 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
106 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
107 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
108 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
109 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
110 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
113 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
114 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
115 Distributions can re-enable building and using pt_chown via the new configure
116 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
117 considerable security risks and should only be used if the distribution
118 understands and accepts the risks.
120 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
123 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
124 fixed (Bugzilla #15330).
126 * Add support for calling C++11 thread_local object destructors on thread
127 and program exit. This needs compiler support for offloading C++11
128 destructor calls to glibc.
130 * Improved worst case performance of libm functions with double inputs and
133 * Support for priority inherited mutexes in pthread condition variables on
134 non-x86 architectures.
136 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
138 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
140 * Optimized string functions for ARM. Implemented by Will Newton and
143 * Optimized libm functions for SPARC. Implemented by David S. Miller.
145 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
148 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
149 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
151 * Added a benchmark framework to track performance of functions in glibc.
153 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
154 It is based on draft TS 18661 and currently enabled as a GNU extension.
156 * On Linux, the clock function now uses the clock_gettime system call
157 for improved precision, rather than old times system call.
159 * Added new API functions pthread_getattr_default_np and
160 pthread_setattr_default_np to get and set the default pthread
161 attributes of a process.
163 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
164 This may improve lock scaling of existing programs on TSX capable systems.
165 When the --enable-lock-elision=yes parameter is specified at configure
166 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
169 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
170 availability). Implemented by Ryan S. Arnold.
172 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
176 * The following bugs are resolved with this release:
178 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
179 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
180 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
181 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
182 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
183 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
184 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
185 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
186 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
187 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
188 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
189 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
190 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
191 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
192 14879, 14889, 14893, 14898, 14914.
194 * Optimization of memcpy for MIPS.
196 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
197 EMFILE has been fixed (Bugzilla #14889).
199 * The add-on ports collection is now distributed in the "ports" subdirectory
200 of the main GNU C Library distribution, rather than separately.
202 * Port to ARM AArch64 contributed by Linaro.
204 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
205 Optimized versions of memcpy, memset, and memcmp added for System z10 and
207 Implemented by Andreas Krebbel.
209 * The new function secure_getenv allows secure access to the environment,
210 returning NULL if running in a SUID/SGID process. This function replaces
211 the internal function __secure_getenv.
213 * SystemTap static probes have been added into the dynamic linker.
214 Implemented by Gary Benson.
216 * Optimizations of string functions strstr, strcasestr and memmem.
217 Implemented by Maxim Kuvyrkov.
219 * The minimum Linux kernel version that this version of the GNU C Library
220 can be used with is 2.6.16.
222 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
223 powerpc POWER7. Implemented by Will Schmidt.
225 * New configure option --disable-nscd builds the C library such that it
226 never attempts to contact the Name Service Caching Daemon (nscd).
227 New configure option --disable-build-nscd avoids building nscd itself;
228 this is the default if --disable-nscd is used.
230 * Improved support for cross-compilation, including cross-testing and
231 bootstrap builds without a previously built glibc.
233 * Several testsuite tests are now able to test multiple IFUNC variants of an
234 interface, rather than just testing the one that would be chooen by
237 * New configure options --with-bugurl and --with-pkgversion, for
238 distributors to use to embed their bug-reporting and package version
239 information in --help and --version output.
241 * The ttyname and ttyname_r functions on Linux now fall back to searching for
242 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
243 allows creation of chroots without the procfs mounted on /proc.
245 * The `crypt' function now fails if passed salt bytes that violate the
246 specification for those values. On Linux, the `crypt' function will
247 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
248 enabled, and fail on encrypted strings using the MD5 or DES algorithm
249 when the mode is enabled.
251 * The `clock_*' suite of functions (declared in <time.h>) is now available
252 directly in the main C library. Previously it was necessary to link with
253 -lrt to use these functions. This change has the effect that a
254 single-threaded program that uses a function such as `clock_gettime' (and
255 is not linked with -lrt) will no longer implicitly load the pthreads
256 library at runtime and so will not suffer the overheads associated with
257 multi-thread support in other code such as the C++ runtime library.
259 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
264 * The following bugs are resolved with this release:
266 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
267 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
268 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
269 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
270 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
271 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
272 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
273 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
274 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
275 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
276 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
277 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
278 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
279 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
280 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
281 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
282 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
283 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
284 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
285 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
286 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
287 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
290 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
291 configuring glibc with:
292 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
293 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
294 Implemented by H.J. Lu.
298 + define static_assert
300 + do not declare gets
302 + declare at_quick_exit and quick_exit also for ISO C11
304 + aligned_alloc. NB: The code is deliberately allows the size parameter
305 to not be a multiple of the alignment. This is a moronic requirement
306 in the standard but it is only a requirement on the caller, not the
311 + uchar.h support added
313 + CMPLX, CMPLXF, CMPLXL added
315 Implemented by Ulrich Drepper.
317 * Support for the IA-64 has been moved to ports.
319 * Remove support for anything but ELF binary format
321 * Checking versions of poll, ppoll added.
322 Implemented by Ulrich Drepper.
324 * More generic and 64-bit performance optimizations to math functions.
325 Implemented by Ulrich Drepper.
327 * New configure option --enable-obsolete-rpc makes the deprecated RPC
328 headers and functions available at compile time as they were before
329 version 2.14. This option will be removed at some time in the future
330 after the TI-RPC library becomes fully sufficient for the needs of
331 existing applications.
333 * Compatibility code for Linux kernel versions before 2.4 has been removed.
334 Note that glibc is not expected to work with any Linux kernel version
337 * New header <sys/auxv.h> and function getauxval allowing easy access to
338 the AT_* key-value pairs passed from the Linux kernel. The header also
339 defines the HWCAP_* bits associated with the AT_HWCAP key.
341 * New locales: mag_IN
343 * New configure option --enable-systemtap builds SystemTap static probes
344 into libc for setjmp and longjmp and into libpthread for various operations.
345 So far the setjmp/longjmp probes and some of the libpthread probes are
346 provided only for i*86 and x86_64.
347 Implemented by Roland McGrath and Rayson Ho.
349 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
351 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
354 * More optimized functions for SPARC. Implemented by David S. Miller.
356 * Improved support for cross-compilation, especially bootstrap builds
357 without a previously built glibc.
359 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
360 Chris Metcalf from Tilera.
362 * Support for the old ARM ABI has been removed from ports. Only the EABI is
363 now supported for ARM processors.
365 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
366 as the name of the dynamic linker, to distinguish it from the
367 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
369 * Support for CRIS has been removed from ports.
371 * A new class of installed header has been documented for low-level
372 platform-specific functionality. PowerPC added the first instance with a
373 function to provide time base register access. Contributed by Tulio
374 Magno Quites Machado Filho.
376 * ix86 configurations now install header files that are consistent with
377 what x86-64 configurations install. These same header files can be used
378 for -m32, -m64, or -mx32 builds.
379 Contributed by H.J. Lu.
381 * Math library bug fixes. A thorough audit of all open math library bugs was
382 conducted by Joseph Myers. Significant progress was made on many math
383 library bugs resulting in more accurate exceptions and function results.
384 Many thanks to all those that contributed including Andreas Jaeger for his
385 patch review and work on the x87 trigonometric instruction issues.
387 * Timezone data is no longer installed. Timezone-related binaries and scripts
388 will continue to be installed. Users should obtain their timezone data from
389 their distribution provider or from the tzdata package at
390 <ftp://munnari.oz.au/pub/>.
394 * The following bugs are resolved with this release:
396 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
397 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
398 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
399 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
400 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
401 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
402 13484, 13506, 13515, 13523, 13524, 13538, 13540
404 * New program pldd to list loaded object of a process
405 Implemented by Ulrich Drepper.
407 * Add nss_db support back to glibc. No more dependency on Berkeley db
408 and support for initgroups lookups.
409 Implemented by Ulrich Drepper.
411 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
412 Contributed by HJ Lu.
414 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
415 Contributed by HJ Lu.
417 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
418 on x86-32 and x86-64.
419 Contributed by Liubov Dmitrieva.
421 * Optimized strchr and strrchr for SSE on x86-32.
422 Contributed by Liubov Dmitrieva.
424 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
425 for x86-64 and x86-32.
426 Contributed by Liubov Dmitrieva.
428 * New interfaces: scandirat, scandirat64
429 Implemented by Ulrich Drepper.
431 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
432 Implemented by Ulrich Drepper.
434 * nscd now also caches the netgroup database.
435 Implemented by Ulrich Drepper.
437 * Integrate libm with gcc's -ffinite-math-only option.
438 Implemented by Ulrich Drepper.
440 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
441 to math functions. Implemented by Ulrich Drepper.
443 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
444 Implemented by Ulrich Drepper.
446 * New Linux interfaces: process_vm_readv, process_vm_writev
448 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
449 Implemented by Ulrich Drepper.
451 * Optimized nearbyint and strcasecmp for PPC.
452 Implemented by Adhemerval Zanella.
454 * New locales: bho_IN, unm_US, es_CU, ta_LK
458 * The following bugs are resolved with this release:
460 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
461 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
462 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
463 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
464 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
465 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
466 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
467 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
468 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
469 12795, 12811, 12813, 12814, 12841
471 * The RPC implementation in libc is obsoleted. Old programs keep working
472 but new programs cannot be linked with the routines in libc anymore.
473 Programs in need of RPC functionality must be linked against TI-RPC.
474 The TI-RPC implementation is IPv6 enabled and there are other benefits.
476 Visible changes of this change include (obviously) the inability to link
477 programs using RPC functions without referencing the TI-RPC library and the
478 removal of the RPC headers from the glibc headers.
479 Implemented by Ulrich Drepper.
481 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
482 syncfs, setns, sendmmsg
484 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
485 yue_HK, lij_IT, mhr_RU
487 * New encodings: CP770, CP771, CP772, CP773, CP774
489 * New program sotruss to trace calls through PLTs
490 Implemented by Ulrich Drepper.
492 * The malloc hook implementation is marked deprecated and will be removed
493 from the default implementation in the next version. The design never
494 worked ever since the introduction of threads. Even programs which do
495 not create threads themselves can use multiple threads created internally.
499 * The following bugs are resolved with this release:
501 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
502 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
503 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
504 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
507 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
509 * POWER7 optimizations: memset, memcmp, strncmp
511 * New optimized string functions for x86-64: strnlen (SSE2),
512 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
513 Implemented by Ulrich Drepper.
517 * The following bugs are resolved with this release:
519 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
520 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
521 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
522 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
523 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
524 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
525 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
526 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
528 * New interfaces: pthread_getname_np, pthread_setname_np
530 * New Linux interface: recvmmsg
532 * STT_GNU_IFUNC implemented for Sparc by David Miller.
534 * The dynamic linker now recognizes supported ABI versions from the
535 EI_ABIVERSION field in the ELF header.
536 Implemented by Ulrich Drepper.
538 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
539 will not be used to fill in password fields in the passwd.byname replies.
540 Instead it is used to synthesize the shadow.byname table, should it be
541 missing. This is a useful mode in some installations involving Solaris.
542 Implemented by Ulrich Drepper.
544 * New locales: kok_IN, sq_MK, cv_RU
548 * The following bugs are resolved with this release:
550 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
551 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
552 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
553 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
554 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
555 10789, 10817, 10823, 10840, 10847
557 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
559 Implemented by Ulrich Drepper.
561 * Checking version of longjmp added that fails if an uninitialized stack
562 frame would be created. Implemented by Ulrich Drepper.
564 * STT_GNU_IFUNC is now supported in static executables.
565 Implemented by H.J. Lu.
567 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
569 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
570 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
571 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
572 Contributed by H.J. Lu.
574 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
575 Implemented by Ulrich Drepper.
577 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
579 Contributed by H.J. Lu.
581 * Support for fma instruction in AVX on x86-64.
582 Implemented by H.J. Lu and Ulrich Drepper.
584 * AVX support in x86-64 auditing support in ld.so.
585 Implemented by H.J. Lu.
587 * STB_GNU_UNIQUE support added.
588 Implemented by Ulrich Drepper.
590 * Implement second fallback mode for optimized DNS lookup for even more
591 broken environments. If two requests from the same port are not
592 handled correctly close the socket and open a new one before sending
593 the second request. The 'single-request-reopen' option in /etc/resolv.conf
594 can be used to select this mode right away, instead of rediscovering the
595 necessity is every process again.
596 Implemented by Ulrich Drepper.
598 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
599 Implemented by Adam Tkac.
601 * Optimized iconv conversions for S390x.
602 Implemented by Andreas Krebbel.
604 * Using condvars with PI mutexes is now more efficient due to kernel
605 support for requeueing to PI futexes. NPTL support added for x86-64.
606 Implemented by Ulrich Drepper.
608 * New locales: ps_AF, my_MM
612 * The following bugs are resolved with this release:
614 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
615 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
616 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
617 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
618 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
620 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
621 Implemented by Ulrich Drepper.
623 * New Linux interfaces: accept4, fallocate, fallocate64.
624 Implemented by Ulrich Drepper.
626 * Correct declarations of string function when used in C++ code. This
627 could lead to compile errors for invalid C++ code.
629 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
632 * New POSIX 2008 interface: psiginfo
633 Implemented by Ulrich Drepper.
635 * New ISO C++1x interfaces: quick_exit, at_quick_exit
636 Implemented by Ulrich Drepper.
638 * Support for selecting between multiple function definitions at runtime
639 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
641 * The libcrypt library can now use the hash function implementations in
642 NSS. Implemented by Ulrich Drepper.
644 * The malloc implementation can be compiled to be less memory efficient
645 but higher performing in multi-threaded programs.
646 Implemented by Ulrich Drepper.
648 * New locales: nan_TW@latin, ks_IN
650 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
651 Implemented by Ulrich Drepper.
653 * Extended printf hook support. It is possible to use user-defined types
654 and extend existing format specifiers.
655 Implemented by Ulrich Drepper.
657 * Handling for group shadow files has been added.
658 Implemented by Ulrich Drepper.
660 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
661 servers (the case, e.g., for some people using the built-in DNS
662 server in ADSL modems/routers). There is a once-per-process timeout
663 in case of a broken server. To avoid it, users can run nscd or put
664 'options single-request' in /etc/resolv.conf.
665 Implemented by Ulrich Drepper.
669 * The following bugs are resolved with this release:
671 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
672 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
673 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
674 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
675 6968, 6974, 6980, 6995, 7008, 7009, 7029
677 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
678 up at the same time. Implemented by Ulrich Drepper.
680 * TLS descriptors for LD and GD on x86 and x86-64.
681 Implemented by Alexandre Oliva.
683 * getaddrinfo now handles DCCP and UDPlite.
684 Implemented by Ulrich Drepper.
686 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
687 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
688 Implemented by Ulrich Drepper.
690 * New implementation of memmem, strstr, and strcasestr which is O(n).
691 Implemented by Eric Blake.
693 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
695 * Implement "e" option for popen to open file descriptor with the
696 close-on-exec flag set. Implemented by Ulrich Drepper.
698 * Implement "b" mode for fmemopen. In this mode writes writes don't
699 implicitly add a NUL byte and seeks from the end of the buffer really
700 use the buffer end, not the string length as the basis.
701 Implemented by Ulrich Drepper.
703 * Many functions, exported and internal, now atomically set the close-on-exec
704 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
706 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
708 Implemented by Pravin Satpute.
710 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
714 * The following bugs are resolved with this release:
716 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
717 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
718 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
719 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
720 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
721 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
722 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
724 * New locales: bo_CN, bo_IN, shs_CA.
726 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
728 * Sorting rules for some Indian languages (Devanagari and Gujarati).
729 Implemented by Pravin Satpute.
731 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
733 * nscd caches now all timeouts for DNS entries
734 Implemented by Ulrich Drepper.
736 * nscd is more efficient and wakes up less often.
737 Implemented by Ulrich Drepper.
739 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
740 vdprintf, and obstack_vprintf.
741 Implemented by Jakub Jelinek.
743 * Faster memset for x86-64.
744 Implemented by Harsha Jagasia and H.J. Lu.
746 * Faster memcpy on x86.
747 Implemented by Ulrich Drepper.
749 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
750 Implemented by Ulrich Drepper.
752 * Faster sqrt and sqrtf implemention for some PPC variants.
753 Implemented by Steven Munroe.
757 * The following bugs are resolved with this release:
759 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
760 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
761 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
762 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
763 5071, 5103, 5104, 5112, 5113, 5184, 5186
765 * More checking functions: fread, fread_unlocked, open*, mq_open.
766 Implemented by Jakub Jelinek and Ulrich Drepper.
768 * Extend fortification to C++. Implemented by Jakub Jelinek.
770 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
771 by not recognizing 'a' as a modifier when those specs are requested.
772 Implemented by Jakub Jelinek.
774 * PPC optimizations to math and string functions.
775 Implemented by Steven Munroe.
777 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
778 options to be passed. Implemented by Ulrich Drepper.
780 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
782 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
783 Implemented by Ulrich Drepper.
785 * Handle private futexes in the NPTL implementation.
786 Implemented by Jakub Jelinek and Ulrich Drepper.
788 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
789 Implemented by Roland McGrath and Ulrich Drepper.
791 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
793 * SHA-256 and SHA-512 based password encryption.
794 Implemented by Ulrich Drepper.
796 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
797 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
800 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
801 Implemented by Ulrich Drepper.
805 * The following bugs are resolved with this release:
807 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
808 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
809 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
810 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
811 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
812 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
813 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
816 * New Linux interfaces: epoll_pwait, sched_getcpu.
818 * New generic interfaces: strerror_l.
820 * nscd can now cache the services database. Implemented by Ulrich Drepper.
824 * The following bugs are resolved with this release:
826 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
827 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
828 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
829 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
830 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
831 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
832 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
833 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
834 3225, 3251, 3252, 3253, 3273
836 * For Linux, the sorting of addresses returned by getaddrinfo now also
837 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
838 Implemented by Ulrich Drepper.
840 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
841 Implemented by Ulrich Drepper.
843 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
845 * New iconv module for MIK. Contributed by Alexander Shopov.
847 * For sites with broken group and/or passwd database, the auto-propagate
848 option of nscd can prevent creating ID lookup entries from the results
849 of a name lookup and vice versa. This usually is no problem but some
850 site might have problems with the default behavior.
851 Implemented by Ulrich Drepper.
853 * Iterating over entire database in NIS can be slow. With the
854 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
855 to trade time for memory. The entire database will be read at once.
856 Implemented by Ulrich Drepper.
858 * The interfaces introduced in RFC 3542 have been implemented by
861 * Support for the new ELF hash table format was added by Ulrich Drepper.
863 * Support for priority inheritance mutexes added by Jakub Jelinek and
866 * Support for priority protected mutexes added by Jakub Jelinek.
868 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
869 or_IN, csb_PL, fy_NL, sr_ME.
873 * More overflow detection functions.
875 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
876 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
878 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
879 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
880 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
881 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
882 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
883 by Masahide Washizawa.
885 * It is now possible to install audit libraries for the dynamic linker using
886 LD_AUDIT. Implemented by Ulrich Drepper.
888 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
889 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
890 For a libc and libpthread that works well on Linux 2.4 kernels, we
891 recommend using the stable 2.3 branch.
893 * The new function open_wmemstream acts like open_memstream,
894 but uses a wchar_t wide character buffer.
896 * The new function ppoll is an improved version of poll, similar to pselect.
898 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
899 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
900 renameat, unlinkat, linkat, symlinkat, readlinkat.
902 * New Linux kernel system calls: unshare,
903 inotify_init, inotify_add_watch, inotify_rm_watch.
905 * The euidaccess function is now also known by the alias eaccess,
906 for compatibility with some other systems.
908 * Timezone data updated to 2006b version.
912 * The following bugs are resolved with this release:
914 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
915 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
916 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
917 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
918 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
919 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
921 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
923 * As of this release, GCC 4 can be used to compile the C Library.
925 * Timezone data updated to 2005m version.
929 * The following bugs are resolved with this release:
931 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
932 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
933 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
934 777, 787, 821, 822, 823, 825
936 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
940 * Support for RFC 3678. Real implementations exist only for Linux so far.
941 Implemented by Ulrich Drepper.
943 * nscd can now cache entries persistently. Expiring entries are reloaded.
944 For speedups the cache can be shared in memory with client processes.
945 Implemented by Ulrich Drepper.
947 * nscd can now perform SELinux checks.
948 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
950 * getaddrinfo queries are now cached. Canonical name lookup is performed
952 Implemented by Ulrich Drepper.
954 * The nothrow function attribute is used when headers are used by gcc when
955 compiling C code. This can avoid significant amounts of exception
958 * The malloc functions perform more error checking and are stricter when
959 it comes to reacting on errors. The default action is to terminate
960 the process after showing an error message. Implemented by Ulrich Drepper.
962 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
963 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
965 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
966 namespaces using the new function dlmopen(). This feature is of course,
967 like most other dynamic loading functionality, not available in statically
968 linked applications. Implemented by Ulrich Drepper.
970 * Low-overhead boundary checking variants of string and some stdio functions
971 were added. These are to be used in conjunction with a gcc patch by
972 Jakub Jelinek which adds calls to these functions if possible.
973 Implemented by Jakub Jelinek and Ulrich Drepper.
975 * Old code for several operating systems and machine architectures that
976 have not been in working condition in a long time have been removed from
977 the main source tree maintained by the GNU C Library's maintainers.
978 These files are now reside in the separate `ports' source module
979 that is usable as an add-on when building the library.
983 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
984 interrogate the dynamic linker, compatible with the Solaris interface.
986 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
987 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
989 * getifaddrs now uses the netlink interface on Linux to get its information.
990 Implemented by Thorsten Kukuk.
992 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
993 Implemented by Ulrich Drepper.
995 * support for non-executable stacks on x86 has been added. Changes mostly
998 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
1001 * getaddrinfo now performs destination address selection according to
1006 * Thread-safe interfaces for many functions that access locale data
1007 were added in version 2.3, but these features were omitted from NEWS.
1008 Many functions have variants with an `_l' suffix that take a `locale_t'
1009 object as a parameter rather than consulting the current locale.
1010 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
1011 create and maintain `locale_t' objects. Additionally, the new function
1012 `uselocale' sets "the current locale" (as used by functions not so
1013 parameterized) set for an individual thread. These features were added
1014 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
1016 * The functions getresuid, getresgid, setresuid, and setresgid, which
1017 have long been available on Linux, are now declared in <unistd.h>
1018 and are now also available on the Hurd.
1020 * ELF thread-local storage support (TLS) now works on x86-64.
1022 * The new dynamic string token $LIB is expanded in shared library names.
1023 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1025 * Aldy Hernandez contributed complete software floating point support for
1026 PowerPC machines with no FPU.
1028 * fexecve is implemented on Linux.
1030 * The `btowc' function should work at least twice as fast due to
1031 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1033 * With approriate thread add-ons cancelable functions are now implemented
1034 in libc.so as well. No need to call the function in libpthread. This
1035 change allowed to finally disable the incorrect and expensive handling
1036 of weak definition in ld.so.
1038 * Yet more PLT entries in libc.so have been removed. We finally arrived
1039 at the bare minimum. Startup times improved appropriately.
1041 * Support for the new Linux/x86 system call interface was added. The
1042 AT_SYSINFO auxiliary vector entry is recognized and handled.
1046 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1049 * iconv (the program and the interface) now accepts empty names (excluding
1050 options like //TRANSLIT) to mean "use charset of current locale".
1052 * localedef can now transliterate characters in strings which are not in
1053 the provided charmap. The information from the input locale is used.
1055 * Prelinking support was added for ELF targets. This requires additional
1056 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1058 * Read-only stdio streams now use mmap to speed up operation by eliminating
1059 copying and buffer underflows. To use add 'm' to the mode string of
1060 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1062 * The malloc functions were completely rewritten by Wolfram Gloger based
1063 on Doug Lea's malloc-2.7.0.c.
1065 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1066 implementation of regex.
1068 * Bruno Haible upgraded the iconv and locale implementation to support
1071 * Contents of the LC_* and LANG environment variables in the CEN style are
1072 not recognized anymore. It never was used. Change by Ulrich Drepper.
1074 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1075 thread-local storage (TLS) ABI on some platforms.
1076 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1078 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1079 EUC-JISX0213, and TSCII.
1081 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1082 BSD-compatible interface for getting all network interface addresses.
1083 Implementation for IPv4 by Roland McGrath.
1085 * Loading of locale data is faster due to the introduction of a locale
1086 archive. Implemented by Roland McGrath and Ulrich Drepper.
1088 * Startup times are significantly reduced by not using exported functions
1089 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1092 * Steven Munroe contributed a port to PowerPC64/Linux.
1096 * The Hurd now uses the GNU libio implementation of stdio rather than the
1097 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1099 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1100 with the same behavior as the Linux system call of the same name.
1104 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1105 128-bit long double format.
1107 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1108 IBM1161, and IBM1162 charsets.
1110 * Andreas Jaeger contributed a port to x86-64/Linux.
1112 * Peter Bruin contributed a port to PowerPC/Hurd.
1114 * libc functions using I/O streams now can handle wide-oriented streams
1117 * optimizations in the dynamic linker. Binaries created by recent binutils
1118 versions start up quicker due to reduced time spent on relocations.
1120 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1124 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1125 asinh, atanh, j0 for the 128-bit long double format.
1127 * Bruno Haible updated all the code handling Unicode in some form to
1128 support Unicode 3.1.
1130 * Speed of regex for single-byte locales is back to previous levels.
1131 Patch by Isamu Hasegawa.
1133 * Alpha, SPARC, and IA-64 now also using floating stacks.
1135 * Startup time of internationalized applications greatly improved through
1136 iconv cache. Use iconvconfig to generate the cache file.
1137 Contributed by Ulrich Drepper.
1139 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1140 severe performance problems. Patch by David Mosberger.
1142 * The Hurd port got a lot more functionality like AIO, various stdio
1143 extensions, etc. Mainly done by Roland McGrath.
1145 * mtrace can now lookup symbols in shared libraries.
1149 * Intel's IA-64 math library is largely integrated. It provides fast and
1150 accurate implementatations for most basic and standard math functions
1151 in float, double, and long double format.
1153 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1154 and asin for the 96-bit long double format and asin, log, tan for the
1155 128-bit long double format.
1157 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1158 The basic double functions exist today. Contributed by Abraham Ziv
1159 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1160 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1162 * An asynchronous name lookup library was added. The interface is designed
1163 after POSIX AIO. The proposal was circulated beforehand to get comments.
1164 No negative ones came in. Implemented by Ulrich Drepper.
1166 * Port to S390/64bit contributed by Martin Schwidefsky
1167 <schwidefsky@de.ibm.com>.
1169 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1170 of functions for Linux/IA-64.
1172 * The RPC code is now thread safe. Threads can now use the same service
1173 of different services at the same time. Patch by Eric Norum
1174 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1176 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1177 family of functions for Linux/S390.
1179 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1180 of functions for Linux/x86.
1182 * Port to Linux/CRIS contributed by Axis Communications.
1186 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1187 we can now check for namespace violations and missing declarations. The
1188 result is that almost all headers are now Unix-compliant (as defined in
1189 the upcoming XPG6). The negative side is that some programs might need
1190 corrections, too, if they depend on the incorrect form of the headers in
1191 previous versions which defined too many symbols and included too many
1194 * regex now handles multibyte character sets correctly.
1195 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1197 * iconv (the program) does now conform to the upcoming XPG6 and handles
1198 charmaps. Instead of the charset names the path of charmaps can be
1199 provided and the conversion happens based on this data.
1200 Contributed by Ulrich Drepper.
1202 * The locale program now provides detailed information about the installed
1207 only lists the names of the supported locales
1211 provides details such as country, language, and codeset name.
1212 Contributed by Ulrich Drepper.
1216 * The gencat program now parses the input file according to the charset
1217 selected by the LC_CTYPE category. This is important for stateful
1218 character sets. To make generating catalogs easier there is a way
1219 to overwrite the charset selected by the locale: before the first
1220 message or $ quote line the catalog can contain a line like
1222 $ codeset=ISO-8859-2
1224 to select the charset (ISO-8859-2 in this case).
1226 Implemented by Shinya Hanataka and Ulrich Drepper.
1228 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1229 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1230 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1232 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1233 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1235 * The LANGUAGE environment variable is now ignored unless the locale is
1236 changed from the default "C" locale.
1238 * The usual bug fixes.
1242 * Greg McGary added runtime support for bounds checking using gcc's
1243 new -fbounded-pointers option. ix86 target is complete. PowerPC
1246 * Thorsten Kukuk added secure mode support to nscd.
1248 * The Berkeley db libraries have been removed.
1250 Related, the nss_db module is now in a separate package since it
1251 obviously requires a database library being available.
1253 * Wide character I/O streams implemented by Ulrich Drepper.
1255 * Functions from the extended socket API added by Ulrich Drepper.
1257 * Functions feenableexcept and fedisableexcept to control the
1258 behaviour of individual exceptions have been added by Andreas Jaeger.
1260 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1262 * The resolver code has been updated from bind 8.2.3-T5B which supports
1263 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1266 This change could in some situations effect backward compatibility. Since
1267 now `_res' is a thread-local instead of a global variable, modifying it
1268 in one thread does not have any effect in other threads.
1270 The resolver library was also extended to allow IPv6 as the transport
1271 protocol for the requests. This work was done by Stig Venaas.
1273 * Compatibility code for K&R C compilers has been removed from the
1274 header files. A ISO C compiler is needed to use the library
1275 (conforming to either C89 or C99 standard).
1277 * Complete rewrite of the localedef program to support multibyte character
1278 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1279 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1280 Implemented by Ulrich Drepper.
1282 Bruno Haible significantly improved the generation and use of the data
1283 structures for the wide character tables.
1285 * Plural handling in gettext implemented by Ulrich Drepper.
1287 * The utmp daemon has been removed.
1289 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1291 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1294 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1296 * POSIX barriers implemented by Kaz Kylheku.
1298 * POSIX spawn function family implemented by Ulrich Drepper.
1300 * POSIX spinlocks are now available.
1302 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1304 * the configure option --enable-kernel=X.Y.Z allows to strip out
1305 compatibility for kernel versions before X.Y.Z. This is currently only
1306 implemented for Linux.
1308 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1309 field sin6_scope_id. This means that all programs using IPv6 should be
1310 recompiled. Don't expect binary compatibility with previous glibc
1313 * various conversion modules for IBM character sets contributed by
1316 * IA-64 port by Jes Sorensen and HJ Lu.
1330 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1332 * New xdr functions are added; some rpc functions are now 64bit clean.
1334 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1336 * Fixed known incompatibilities with glibc 2.0.
1338 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1340 * Optimized a number of functions (especially the ELF dynamic loader).
1342 * Update timezone data files.
1344 * lots of charmaps corrections
1346 * some new locale definitions and charmaps
1351 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1352 conform to POSIX member type requirements. Symbol versions have been
1353 adjusted as needed within the library, and for direct use by applications,
1354 but there is potential for problems if third-party libraries use
1355 struct timeval as part of their interface. This does not present
1356 a problem for X and other "essential" system libraries.
1358 * An additional locale model to support C++ Standard Library locale
1359 model and probably more was implemented by Ulrich Drepper.
1361 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1364 * Miles Bader provided the `argp' function family to support hierachical
1365 command line argument parsing, layered on top of getopt.
1367 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1369 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1372 * scanf recognizes the %a and %A format for scanning floating point numbers.
1374 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1375 information and interfaces for the available integer types.
1377 * about 130 new math functions were added to implement the ISO C9x math
1380 * the new header <complex.h> contains definitions of the complex math
1381 functions from ISO C 9X.
1383 * the new header <tgmath.h> defines generic macros to use complex or
1384 real valued functions.
1386 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1388 * Andreas Jaeger provided a test suite for the math library.
1390 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1392 * Ulrich Drepper added character set conversion functions (iconv).
1394 * Optimized string functions have been added.
1396 * The localedata addon is now part of glibc.
1398 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1400 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1401 daemon for NSS (nscd).
1403 Missing a better place here are some numbers on improvements. Under
1404 Linux 2.1.125 un-tar-ing the kernel sources takes
1408 using local files 12.19s 6.88s 22.91s
1410 using NIS 13.92s 8.91s 26.34s
1412 using NIS & nscd 10.37s 7.34s 25.30s
1414 using NIS+ 27.57s 30.37s 640.46s
1416 using NIS+ & nscd 10.25s 7.83s 26.51s
1418 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1420 Keep in mind that non-namelookup related operations dominate above times.
1421 It was just a common complain that using NIS+ unpacking the kernel is
1424 [1] The old nscd implementation is not available anymore since it was
1425 distributed with glibc up to version 2.0.98 and thus is now replaced.
1427 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1429 * Mark Kettenis provided a Hesiod NSS module.
1431 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1432 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1434 * rcmd can now handle netgroups (Dick Streefland).
1436 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1439 * Support for the IPv6 protocol has been added to the socket API, as per the
1440 latest draft standards.
1442 * Support for Linux 2.2 has been added.
1444 * Interface changes relative to the latest 2.0.x release:
1445 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1446 addseverity NEW: Unix98
1447 alphasort64 NEW: LFS
1448 argp_err_exit_status NEW: argp, GNU ext
1449 argp_error NEW: argp, GNU ext
1450 argp_failure NEW: argp, GNU ext
1451 argp_help NEW: argp, GNU ext
1452 argp_parse NEW: argp, GNU ext
1453 argp_program_bug_address NEW: argp, GNU ext
1454 argp_program_version NEW: argp, GNU ext
1455 argp_program_version_hook NEW: argp, GNU ext
1456 argp_state_help NEW: argp, GNU ext
1457 argp_usage NEW: argp, GNU ext
1458 authdes_create NEW: Secure RPC
1459 authdes_getucred NEW: Secure RPC
1460 authdes_pk_create NEW: Secure RPC
1461 backtrace NEW: GNU ext.
1462 backtrace_symbols NEW: GNU ext.
1463 backtrace_symbols_fd NEW: GNU ext.
1465 cacosf NEW: ISO C 9x
1466 cacosh NEW: ISO C 9x
1467 cacoshf NEW: ISO C 9x
1468 cacoshl NEW: ISO C 9x
1469 cacosl NEW: ISO C 9x
1476 casinf NEW: ISO C 9x
1477 casinh NEW: ISO C 9x
1478 casinhf NEW: ISO C 9x
1479 casinhl NEW: ISO C 9x
1480 casinl NEW: ISO C 9x
1482 catanf NEW: ISO C 9x
1483 catanh NEW: ISO C 9x
1484 catanhf NEW: ISO C 9x
1485 catanhl NEW: ISO C 9x
1486 catanl NEW: ISO C 9x
1487 cbc_crypt NEW: Secure RPC
1491 ccoshf NEW: ISO C 9x
1492 ccoshl NEW: ISO C 9x
1498 cimagf NEW: ISO C 9x
1499 cimagl NEW: ISO C 9x
1500 clearerr_locked REMOVED
1501 clntunix_create NEW: sunrpc ext
1503 clog10 NEW: ISO C 9x
1504 clog10f NEW: ISO C 9x
1505 clog10l NEW: ISO C 9x
1515 cprojf NEW: ISO C 9x
1516 cprojl NEW: ISO C 9x
1518 crealf NEW: ISO C 9x
1519 creall NEW: ISO C 9x
1524 csinhf NEW: ISO C 9x
1525 csinhl NEW: ISO C 9x
1528 csqrtf NEW: ISO C 9x
1529 csqrtl NEW: ISO C 9x
1533 ctanhf NEW: ISO C 9x
1534 ctanhl NEW: ISO C 9x
1536 des_setparity NEW: Secure RPC
1537 ecb_crypt NEW: Secure RPC
1538 endutxent NEW: Unix98
1540 exp10f NEW: ISO C 9x
1541 exp10l NEW: ISO C 9x
1545 fattach NEW: STREAMS
1546 fdetach NEW: STREAMS
1550 feclearexcept NEW: ISO C 9x
1551 fegetenv NEW: ISO C 9x
1552 fegetexceptflag NEW: ISO C 9x
1553 fegetround NEW: ISO C 9x
1554 feholdexcept NEW: ISO C 9x
1556 feraiseexcept NEW: ISO C 9x
1557 ferror_locked REMOVED
1558 fesetenv NEW: ISO C 9x
1559 fesetexceptflag NEW: ISO C 9x
1560 fesetround NEW: ISO C 9x
1561 fetestexcept NEW: ISO C 9x
1562 feupdateenv NEW: ISO C 9x
1563 fflush_locked REMOVED
1567 fgets_unlocked NEW: GNU ext.
1568 fileno_locked REMOVED
1580 fputc_locked REMOVED
1581 fputs_unlocked NEW: GNU ext.
1582 fread_unlocked NEW: GNU ext.
1587 fstatvfs NEW: Unix98
1591 ftruncate64 NEW: LFS
1593 fwrite_unlocked NEW: GNU ext.
1594 gai_strerror NEW: IPv6
1598 getchar_locked REMOVED
1600 getdate_err NEW: Unix98
1601 getdate_r NEW: GNU ext.
1603 getnameinfo NEW: IPv6
1604 getnetname NEW: Secure RPC
1605 getpmsg NEW: STREAMS
1606 getpt NEW: Unix98 PTY
1607 getrlimit64 NEW: LFS
1608 getutxent NEW: Unix98
1609 getutxid NEW: Unix98
1610 getutxline NEW: Unix98
1611 glob64 NEW: GNU ext.
1612 globfree64 NEW: GNU ext.
1613 gnu_get_libc_release NEW: GNU ext.
1614 gnu_get_libc_version NEW: GNU ext.
1615 grantpt NEW: Unix98 PTY
1616 host2netname NEW: Secure RPC
1618 iconv_close NEW: iconv
1619 iconv_open NEW: iconv
1620 if_freenameindex NEW: IPv6
1621 if_indextoname NEW: IPv6
1622 if_nameindex NEW: IPv6
1623 if_nametoindex NEW: IPv6
1624 in6addr_any NEW: IPv6
1625 in6addr_loopback NEW: IPv6
1626 inet6_isipv4mapped NEW: IPv6
1627 isastream NEW: STREAMS
1628 iswblank NEW: GNU ext.
1629 key_decryptsession NEW: Secure RPC
1630 key_decryptsession_pk NEW: Secure RPC
1631 key_encryptsession NEW: Secure RPC
1632 key_encryptsession_pk NEW: Secure RPC
1633 key_gendes NEW: Secure RPC
1634 key_get_conv NEW: Secure RPC
1635 key_secretkey_is_set NEW: Secure RPC
1636 key_setnet NEW: Secure RPC
1637 key_setsecret NEW: Secure RPC
1638 llrint NEW: ISO C 9x
1639 llrintf NEW: ISO C 9x
1640 llrintl NEW: ISO C 9x
1641 llround NEW: ISO C 9x
1642 llroundf NEW: ISO C 9x
1643 llroundl NEW: ISO C 9x
1648 lrintf NEW: ISO C 9x
1649 lrintl NEW: ISO C 9x
1650 lround NEW: ISO C 9x
1651 lroundf NEW: ISO C 9x
1652 lroundl NEW: ISO C 9x
1654 makecontext NEW: Unix98
1655 mempcpy NEW: GNU ext.
1658 modify_ldt NEW: kernel
1662 nearbyint NEW: ISO C 9x
1663 nearbyintf NEW: ISO C 9x
1664 nearbyintl NEW: ISO C 9x
1665 netname2host NEW: Secure RPC
1666 netname2user NEW: Secure RPC
1667 nexttoward NEW: ISO C 9x
1668 nexttowardf NEW: ISO C 9x
1669 nexttowardl NEW: ISO C 9x
1673 passwd2des NEW: Secure RPC
1675 pow10f NEW: GNU ext.
1676 pow10l NEW: GNU ext.
1679 printf_size NEW: GNU ext.
1680 printf_size_info NEW: GNU ext.
1681 profil_counter REMOVED
1682 pthread_mutexattr_getkind_np REPLACED
1683 pthread_mutexattr_setkind_np REPLACED
1684 ptsname NEW: Unix98 PTY
1685 ptsname_r NEW: Unix98 PTY
1687 putchar_locked REMOVED
1688 putgrent NEW: GNU ext.
1690 putpmsg NEW: STREAMS
1691 pututxline NEW: Unix98
1695 readdir64_r NEW: LFS
1696 remquo NEW: ISO C 9x
1697 remquof NEW: ISO C 9x
1698 remquol NEW: ISO C 9x
1700 roundf NEW: ISO C 9x
1701 roundl NEW: ISO C 9x
1703 scalbln NEW: ISO C 9x
1704 scalblnf NEW: ISO C 9x
1705 scalblnl NEW: ISO C 9x
1707 sendfile NEW: kernel
1708 setcontext NEW: Unix98
1709 setrlimit64 NEW: LFS
1710 setutxent NEW: Unix98
1712 sigignore NEW: Unix98
1713 sigqueue NEW: POSIX.1b
1714 sigrelse NEW: Unix98
1715 sigset NEW: POSIX.1b
1716 sigtimedwait NEW: POSIX.1b
1717 sigwaitinfo NEW: POSIX.1b
1718 sincos NEW: GNU ext.
1719 sincosf NEW: GNU ext.
1720 sincosl NEW: GNU ext.
1724 strcasestr NEW: GNU ext.
1725 strtoimax NEW: ISO C 9x
1726 strtoumax NEW: ISO C 9x
1727 strverscmp NEW: GNU ext.
1728 svcauthdes_stats NEW: Secure RPC
1729 svcunix_create NEW: sunrpc etx
1730 svcunixfd_create NEW: sunrpc ext
1731 swapcontext NEW: Unix98
1732 tcgetsid NEW: Unix98 PTY
1733 tdestroy NEW: GNU ext.
1734 tgamma NEW: ISO C 9x
1735 tgammaf NEW: ISO C 9x
1736 tgammal NEW: ISO C 9x
1740 truncf NEW: ISO C 9x
1741 truncl NEW: ISO C 9x
1743 unlockpt NEW: Unix98 PTY
1744 updwtmpx NEW: Unix98
1745 user2netname NEW: Secure RPC
1746 utmpxname NEW: Unix98
1747 versionsort NEW: GNU ext.
1748 versionsort64 NEW: GNU ext.
1750 wcscasecmp NEW: GNU ext.
1751 wcsncasecmp NEW: GNU ext.
1752 wcsnlen NEW: GNU ext.
1753 wcstoimax NEW: ISO C 9x
1754 wcstoll NEW: ISO C 9x
1755 wcstoull NEW: ISO C 9x
1756 wcstoumax NEW: ISO C 9x
1758 wordexp NEW: POSIX.2
1759 wordfree NEW: POSIX.2
1760 write_profiling REMOVED
1761 xdecrypt NEW: Secure RPC
1762 xdr_authdes_cred NEW: Secure RPC
1763 xdr_authdes_verf NEW: Secure RPC
1764 xdr_cryptkeyarg NEW: Secure RPC
1765 xdr_cryptkeyarg2 NEW: Secure RPC
1766 xdr_cryptkeyres NEW: Secure RPC
1767 xdr_getcredres NEW: Secure RPC
1768 xdr_key_netstarg NEW: Secure RPC
1769 xdr_key_netstres NEW: Secure RPC
1770 xdr_keybuf NEW: Secure RPC
1771 xdr_keystatus NEW: Secure RPC
1772 xdr_netnamestr NEW: Secure RPC
1773 xdr_sizeof NEW: Secure RPC
1774 xdr_unixcred NEW: sunrpc ext
1775 xencrypt NEW: Secure RPC
1776 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1787 * inet_ntoa is thread-safe
1789 * updwtmp is moved from libutil to libc
1791 * rewrite of cbrt function
1793 * update of timezone data
1807 * add atoll function
1809 * fix complex problems in Berkeley DB code
1811 * fix math functions
1815 * fixed lots of header problems (especially Linux/GNU specific)
1817 * dynamic loader preserves all registers
1819 * Roland McGrath provided support for handling of auxiliary objects in
1820 the ELF dynamic loader.
1822 * support for parallel builds is improved
1826 * GNU extensions are no longer declared by default. To enable them you
1827 must define the macro `_GNU_SOURCE' in your program or compile with
1830 * The library has changed from using GNU ld symbol aliases to using weak
1831 symbols where available. The ELF object file format supports weak
1832 symbols; GNU ld also supports weak symbols in the a.out format. (There
1833 is also now support for other GNU ld extensions in ELF. Use the
1834 `--with-elf' option to configure to indicate you have ELF, and
1835 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1836 of many files which contained only symbol aliases, reducing the size of
1837 the source and the compiled library; many other files were renamed to
1838 less cryptic names previously occupied by the symbol alias files.
1839 There is a new header file <elf.h> for programs which operate on
1840 files in the ELF format.
1842 * Converted to Autoconf version 2, so `configure' has more options.
1843 Run `configure --help' to see the details.
1845 * The library can now be configured to build profiling, highly-optimized
1846 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1847 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1848 `configure' enable building these extra libraries. The shared library is
1849 built by default when using both ELF and GNU ld. When shared libraries
1850 are enabled, the new library `-ldl' is available for arbitrary run-time
1851 loading of shared objects; its interface is defined in <dlfcn.h>. The
1852 new header file <link.h> gives access to the internals of the run-time
1853 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1854 application of same name on other systems and it provides information
1855 about dynamically linked binaries.
1857 * The C library now provides the run-time support code for profiling
1858 executables compiled with `-pg'. Programs can control the profiling code
1859 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1860 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1861 the support for this file format was contributed by David Mosberger-Tang.
1863 * The math code has been replaced with a math library based on fdlibm from
1864 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1865 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1866 functions. The math functions now reside in a separate library, so
1867 programs using them will need to use `-lm' their linking commands.
1869 * John C. Bowman contributed optimized ix87 assembler inline functions.
1871 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1872 mechanism similar to that found in Solaris 2. This is now used for the
1873 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1874 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1875 file controls what services are used for each individual database. This
1876 works by loading shared libraries with names specified in `nsswitch.conf',
1877 so service modules can be changed or added at any time without even
1878 relinking any program. Currently there are the file, db, and NIS based
1879 NSS services available.
1881 * The new functions `strtoq' and `strtouq' parse integer values from
1882 strings, like `strtol' and `strtoul', but they return `long long int' and
1883 `unsigned long long int' values, respectively (64-bit quantities).
1885 * The new functions `strtof' and `strtold' parse floating-point values from
1886 strings, like `strtod', but they return `float' and `long double' values,
1887 respectively (on some machines `double' and `long double' are the same).
1889 * Ulrich Drepper has contributed new implementations of the floating-point
1890 printing and reading code used in the `printf' family of functions and
1891 `strtod', `strtof', and `strtold'. These new functions are perfectly
1892 accurate, and much faster than the old ones.
1894 * The implementation of the POSIX locale model was completely rewritten by
1895 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1896 to compile the POSIX locale definition.
1898 * The former dummy implementations of the strcoll and strxfrm function are
1899 now replaced by fully functional code contributed by Ulrich Drepper. The
1900 collation information comes from the POSIX locale definitions.
1902 * The new header <langinfo.h> defines an interface for accessing
1903 various locale-dependent data (using the locale chosen with `setlocale').
1905 * Ulrich Drepper has contributed a new suite of functions for operation on
1906 wide-character and multibyte-character strings, in <wchar.h>;
1907 and classification and case conversion of wide characters, in <wctype.h>.
1908 These new functions are conforming to the ISO C, Amendement 1 specification.
1910 * There is now a second implementation of the standard I/O library available.
1911 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1912 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1914 * You can now use positional parameter specifications in format strings
1915 for the `printf' and `scanf' families of functions. For example,
1916 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1917 ``Number 6, Mr Jones''. This is mainly useful when providing different
1918 format strings for different languages, whose grammars may dictate
1919 different orderings of the values being printed. To support this
1920 feature, the interface for `register_printf_handler' has changed; see
1921 the header file <printf.h> for details.
1923 * The `printf' and `scanf' families of functions now understand a new
1924 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1925 to group numbers as indicated by the locale; for `scanf' and friends, this
1926 says to accept as valid only a number with all the proper grouping
1927 separators in the right places. In the default "C" locale, numbers are
1928 not grouped; but locales for specific countries will define the usual
1929 conventions (i.e. separate thousands with `,' in the US locale).
1931 * The pgrp functions have been regularized, slightly incompatibly but much
1932 less confusingly. The core functions are now `getpgid' and `setpgid',
1933 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1934 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1935 provided for compatibility. There is no longer an incompatible `getpgrp'
1936 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1938 * The new header file <fts.h> and suite of functions simplify programs that
1939 operate on directory trees. This code comes from 4.4 BSD.
1941 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1942 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1943 NSS scheme used in glibc.
1945 * There is a new malloc debugging hook `__memalign_hook'.
1947 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1948 `unsigned int' in <sys/types.h>. These are for compatibility only and
1949 their use is discouraged.
1951 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1952 done differently, so that it works even without GNU ld.
1954 * New function `euidaccess' checks allowed access to a file like `access',
1955 but using the effective IDs instead of the real IDs.
1957 * The time zone data files have been updated for the latest and greatest
1958 local time conventions of the countries of the world.
1960 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1963 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1964 for formatting floating-point numbers. They are provided only for
1965 compatibility; new programs should use `sprintf' instead. There are
1966 also equivalent function for the `long double' floating-point type and
1967 all functions also exist in a reentrant form.
1969 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1970 functions for maintaining the login-record files (primarily of use to
1971 system programs such as `login'), and convenient functions for
1972 allocating and initializing a pseudo-terminal (pty) device.
1974 * Ulrich Drepper has contributed new support for System V style
1975 shared memory and IPC on systems that support it.
1977 * Ulrich Drepper has contributed several miscellaneous new functions found
1978 in System V: The `hsearch' family of functions provide an effective
1979 implementation of hash tables; `a64l' and `l64a' provide a very simple
1980 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1983 * Ulrich Drepper has contributed new reentrant counterparts for the
1984 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1986 * Ulrich Drepper has contributed new, highly-optimized versions of several
1987 string functions for the i486/Pentium family of processors.
1989 * Ulrich Drepper has updated the Linux-specific code, based largely
1990 on work done in Hongjiu Lu's version of GNU libc for Linux.
1991 The GNU library now supports Linux versions 2.0.10 and later,
1992 using the ELF object file format (i[3456]86-*-linux).
1994 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1996 * David Mosberger-Tang and Richard Henderson have ported the C library
1997 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1998 dynamic linking support for ELF/Alpha.
2000 * Richard Henderson contributed several Alpha optimized assembler function
2001 for arithmetic and string handling.
2003 * Ulrich Drepper has contributed a new set of message catalog functions to
2004 support multiple languages using the <libintl.h> interface, for use with
2005 his new package GNU gettext. Translation volunteers have contributed
2006 catalogs of the library's messages in Spanish, German, and Korean.
2008 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
2009 program and the `catgets' function for reading the catalog files it
2010 creates. (The <libintl.h> interface is preferred; we include the
2011 <nl_types.h> interface using `catgets' only for source compatibility with
2012 programs already written to use it.)
2014 * New header file <values.h> gives SVID-compatible names for <limits.h>
2017 * Various new macros, declarations, and small header files for compatibility
2020 * New function `group_member' is a convenient way to check if a process has
2021 a given effective group ID.
2023 * When using GCC 2.7 and later, the socket functions are now declared in a
2024 special way so that passing an argument of type `struct sockaddr_in *',
2025 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2026 `struct sockaddr *' type, does not generate a type-clash warning.
2028 * New function `error' declared in header file <error.h> is a convenient
2029 function for printing error messages and optionally exiting; this is the
2030 canonical function used in GNU programs. The new functions `err', `warn',
2031 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2032 doing the same thing.
2034 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2035 POSIX.2 `glob' function to do ~ and {...} expansion.
2037 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2038 `clearenv' which is used in POSIX.9 is also available.
2040 * New function `getsid' returns session ID number on systems that support it.
2042 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2043 files <db.h> and <mpool.h> provide a rich set of functions for several
2044 types of simple databases stored in memory and in files, and <ndbm.h> is
2045 an old `ndbm'-compatible interface using the `db' functions. Link with
2046 `-ldb' to get these functions.
2048 * New macro `strdupa' copies a string like `strdup', but uses local stack
2049 space from `alloca' instead of dynamic heap space from `malloc'.
2051 * New function `strnlen' is like `strlen' but searches only a given maximum
2052 number of characters for the null terminator. `stpncpy', `strndup' and
2053 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2056 * New function `statfs' in header <sys/statfs.h>.
2058 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2059 provide convenient functions for operating on blocks of null-terminated
2062 * A new suite of functions in <utmp.h> handle all the details of reading
2063 and writing the utmp file.
2065 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2068 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2069 completely POSIX compliant and also implemented the extended functionality
2070 to handle alternate digit representation and alternate era date formats.
2072 * Ulrich Drepper provided an implementation of the `strptime' function
2073 defined in XPG4.2 which transforms a string into a `struct tm' value.
2075 * Paul Eggert provided the tzselect shell script as part of the timezone
2076 code. The shell script makes it easy to select the correct timezone
2079 * The implementation of the malloc family of functions is completely replaced
2080 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2081 The implementation uses the mmap function (if available) and it is
2082 optimized for the use in multi threaded programs.
2084 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2085 functions. This new functionality is usable by specifying a special
2086 salt string and it is compatible with implementation on *BSD systems.
2088 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2089 `getsubopt' to handle second level command line options, `bsd_signal'
2090 to access BSD style `signal' functionality, the obsolete `regexp' style
2093 * the `lchown' function is available on system which support this
2096 * The implementation of the shadow password handling function was contributed
2099 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2101 * POSIX.1g support was added. The <sys/select.h> header is available,
2102 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2103 implementation of `getaddrinfo'.
2107 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2109 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2110 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2112 * The new function `daemon' from 4.4 BSD is useful for server programs that
2113 want to put themselves in the background.
2115 * Joel Sherrill has contributed support for several standalone boards that
2116 run without an operating system.
2118 * `printf', `scanf' and friends now accept a `q' type modifier for long
2119 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2121 * All of the code taken from BSD (notably most of the math and networking
2122 routines) has been updated from the BSD 4.4-Lite release.
2124 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2126 * The new functions `getdomainname' and `setdomainname' fetch or change the
2127 YP/NIS domain name. These are system calls which exist on systems which
2130 * The time zone data files have been updated for the latest international
2133 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2134 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2138 * The C library now includes support for Sun RPC, from Sun's free
2139 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2140 are included. (There is still no support for YP.)
2142 * Tom Quinn has contributed a port of the C library to SGI machines running
2143 Irix 4 (mips-sgi-irix4).
2145 * The new `lockf' function is a simplified interface to the locking
2146 facilities of `fcntl', included for compatibility.
2148 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2150 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2152 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2155 * The error message printed by `assert' for a failed assertion now includes
2156 the name of the program (if using GNU ld) and the name of the calling
2157 function (with versions of GCC that support this).
2159 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2161 * The library now includes the <sys/mman.h> header file and memory
2162 management functions `mmap', `munmap', `mprotect', `msync', and
2163 `madvise', on systems that support those facilities.
2165 * The interface for `mcheck' has changed slightly: the function called to
2166 abort the program when an allocation inconsistency is detected now takes
2167 an argument that indicates the type of failure. The new function
2168 `mprobe' lets you request a consistency check for a particular block at
2169 any time (checks are normally done only when you call `free' or `realloc'
2172 * It is now possible to easily cross-compile the C library, building on one
2173 system a library to run on another machine and/or operating system. All
2174 you need to do is set the variable `HOST_CC' in `configparms' to the
2175 native compiler for programs to run on the machine you are building on (a
2176 few generator programs are used on Unix systems); set `CC' to the
2179 * The new function `fexecve' (only implemented on the GNU system) executes
2180 a program file given a file descriptor already open on the file.
2184 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2185 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2187 * You can set the variable `libprefix' in `configparms' to specify a prefix
2188 to be prepended to installed library files; this makes it easy to install
2189 the GNU C library to be linked as `-lgnuc' or whatever.
2191 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2192 copies a limited number of characters from a string, and returns the
2193 address of the last character written.
2195 * You no longer need to check for whether the installed `stddef.h' is
2196 compatible with the GNU C library. configure now checks for you.
2198 * You can now define a per-stream `fileno' function to convert the
2199 stream's cookie into an integral file descriptor.
2201 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2202 allocates zero bytes of storage, and returns a unique pointer which
2203 you can pass to `realloc' or `free'. The behavior is undefined if
2204 you dereference this pointer.
2206 * The C library now runs on Sony NEWS m68k machines running either
2207 NewsOS 3 or NewsOS 4.
2209 * The new `syscall' function is a system-dependent primitive function
2210 for invoking system calls. It has the canonical behavior on Unix
2211 systems, including unreliable return values for some calls (such as
2212 `pipe', `fork' and `getppid').
2214 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2215 to `EAGAIN', which is the preferred name. On systems whose kernels
2216 use two distinct codes, the C library now translates EWOULDBLOCK to
2217 EAGAIN in every system call function.
2221 * The GNU C Library Reference Manual is now distributed with the library.
2222 `make dvi' will produce a DVI file of the printed manual.
2223 `make info' will produce Info files that you can read on line using C-h i
2224 in Emacs or the `info' program.
2225 Please send comments on the manual to bug-glibc-manual@gnu.org.
2227 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2229 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2231 * Jason Merrill has contributed a port to the Sequent Symmetry running
2232 Dynix version 3 (i386-sequent-dynix).
2234 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2235 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2237 * New function `memory_warnings' lets you arrange to get warnings when
2238 malloc is running out of memory to allocate, like Emacs gives you.
2240 * The C library now contains the relocating allocator used in Emacs 19 for
2241 its editing buffers. This allocator (ralloc) minimizes allocation
2242 overhead and fragmentation by moving allocated regions around whenever it
2243 needs to. You always refer to a ralloc'd region with a "handle" (a
2244 pointer to a pointer--an object of type `void **').
2246 * There is a new `printf' format: `%m' gives you the string corresponding
2247 to the error code in `errno'.
2249 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2250 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2251 pass, the `a' modifier says to fill in a `char **' you pass with a
2254 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2255 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2256 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2258 * `mkstemp' is a traditional Unix function to atomically create and open a
2259 uniquely-named temporary file.
2263 * The standard location for the file that says what the local timezone is
2264 has changed again. It is now `/usr/local/etc/localtime' (or more
2265 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2267 * The distribution no longer contains any files with names longer than 14
2270 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2271 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2273 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2277 * The configuration process has changed quite a bit. The `configure'
2278 script is now used just like the configuration scripts for other GNU
2279 packages. The `sysdeps' directory hierarchy is much rearranged.
2280 The file `INSTALL' explains the new scheme in detail.
2282 * The header files no longer need to be processed into ANSI C and
2283 traditional C versions. There is just one set of files to install, and
2284 it will work with ANSI or old C compilers (including `gcc -traditional').
2286 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2287 MIPS DECStation running Ultrix 4.
2289 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2290 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2291 made itself into a shared library.
2293 * Yet further improved support for the i386, running 4.3 BSD-like systems
2294 (such as Mach 3 with the Unix single-server), or System V.
2296 * New function `strncasecmp' to do case-insensitive string comparison
2297 with limited length.
2299 * New function `strsep' is a reentrant alternative to `strtok'.
2301 * New functions `scandir' and `alphasort' for searching directories.
2303 * New function `setenv' is a better interface to `putenv'.
2305 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2306 function for traversing a directory tree.
2308 * The GNU obstack package is now also part of the C library.
2309 The new function `open_obstack_stream' creates a stdio stream that
2310 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2311 formatted output directly to an obstack.
2313 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2314 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2316 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2318 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2319 things to your strings.
2321 * There are some new test programs: test-fseek, testmb, and testrand.
2323 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2324 These ports are not finished, but are a good starting place for really
2325 supporting those systems.
2327 * `/etc/localtime' is now the standard location for the file that says what
2328 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2329 This follows the general principle that `/etc' is the place for all local
2330 configuration files.
2332 * The C library header files now use `extern "C"' when used by the C++
2333 compiler, so the C library should now work with C++ code.
2335 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2336 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2339 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2340 function which uses the `merge sort' algorithm, and is said to be
2341 significantly faster than the old GNU `qsort' function. Merge sort is
2342 now the standard `qsort' function. The new algorithm can require a lot
2343 of temporary storage; so, the old sorting function is called when the
2344 required storage is not available.
2346 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2347 provides the Unix `crypt' function, plus some other entry points.
2349 * The code and header files taken from 4.4 BSD have been updated with the
2350 latest files released from Berkeley.
2352 ----------------------------------------------------------------------
2353 Copyright information:
2355 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2357 Permission is granted to anyone to make or distribute verbatim copies
2358 of this document as received, in any medium, provided that the
2359 copyright notice and this permission notice are preserved,
2360 thus giving the recipient permission to redistribute in turn.
2362 Permission is granted to distribute modified versions
2363 of this document, or of portions of it,
2364 under the above conditions, provided also that they
2365 carry prominent notices stating who last changed them.
2368 version-control: never