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 14699, 15522, 15531, 15532, 15736, 15749, 15797, 15867, 15890, 15897,
15 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
16 to the d_name member of struct dirent, or omit the terminating NUL
17 character. (Bugzilla #14699).
22 * The following bugs are resolved with this release:
24 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
25 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
26 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
27 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
28 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
29 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
30 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
31 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
32 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
33 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
34 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
35 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
36 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
39 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
40 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
41 Distributions can re-enable building and using pt_chown via the new configure
42 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
43 considerable security risks and should only be used if the distribution
44 understands and accepts the risks.
46 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
49 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
50 fixed (Bugzilla #15330).
52 * Add support for calling C++11 thread_local object destructors on thread
53 and program exit. This needs compiler support for offloading C++11
54 destructor calls to glibc.
56 * Improved worst case performance of libm functions with double inputs and
59 * Support for priority inherited mutexes in pthread condition variables on
60 non-x86 architectures.
62 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
64 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
66 * Optimized string functions for ARM. Implemented by Will Newton and
69 * Optimized libm functions for SPARC. Implemented by David S. Miller.
71 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
74 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
75 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
77 * Added a benchmark framework to track performance of functions in glibc.
79 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
80 It is based on draft TS 18661 and currently enabled as a GNU extension.
82 * On Linux, the clock function now uses the clock_gettime system call
83 for improved precision, rather than old times system call.
85 * Added new API functions pthread_getattr_default_np and
86 pthread_setattr_default_np to get and set the default pthread
87 attributes of a process.
89 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
90 This may improve lock scaling of existing programs on TSX capable systems.
91 When the --enable-lock-elision=yes parameter is specified at configure
92 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
95 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
96 availability). Implemented by Ryan S. Arnold.
98 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
102 * The following bugs are resolved with this release:
104 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
105 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
106 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
107 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
108 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
109 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
110 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
111 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
112 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
113 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
114 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
115 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
116 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
117 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
118 14879, 14889, 14893, 14898, 14914.
120 * Optimization of memcpy for MIPS.
122 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
123 EMFILE has been fixed (Bugzilla #14889).
125 * The add-on ports collection is now distributed in the "ports" subdirectory
126 of the main GNU C Library distribution, rather than separately.
128 * Port to ARM AArch64 contributed by Linaro.
130 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
131 Optimized versions of memcpy, memset, and memcmp added for System z10 and
133 Implemented by Andreas Krebbel.
135 * The new function secure_getenv allows secure access to the environment,
136 returning NULL if running in a SUID/SGID process. This function replaces
137 the internal function __secure_getenv.
139 * SystemTap static probes have been added into the dynamic linker.
140 Implemented by Gary Benson.
142 * Optimizations of string functions strstr, strcasestr and memmem.
143 Implemented by Maxim Kuvyrkov.
145 * The minimum Linux kernel version that this version of the GNU C Library
146 can be used with is 2.6.16.
148 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
149 powerpc POWER7. Implemented by Will Schmidt.
151 * New configure option --disable-nscd builds the C library such that it
152 never attempts to contact the Name Service Caching Daemon (nscd).
153 New configure option --disable-build-nscd avoids building nscd itself;
154 this is the default if --disable-nscd is used.
156 * Improved support for cross-compilation, including cross-testing and
157 bootstrap builds without a previously built glibc.
159 * Several testsuite tests are now able to test multiple IFUNC variants of an
160 interface, rather than just testing the one that would be chooen by
163 * New configure options --with-bugurl and --with-pkgversion, for
164 distributors to use to embed their bug-reporting and package version
165 information in --help and --version output.
167 * The ttyname and ttyname_r functions on Linux now fall back to searching for
168 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
169 allows creation of chroots without the procfs mounted on /proc.
171 * The `crypt' function now fails if passed salt bytes that violate the
172 specification for those values. On Linux, the `crypt' function will
173 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
174 enabled, and fail on encrypted strings using the MD5 or DES algorithm
175 when the mode is enabled.
177 * The `clock_*' suite of functions (declared in <time.h>) is now available
178 directly in the main C library. Previously it was necessary to link with
179 -lrt to use these functions. This change has the effect that a
180 single-threaded program that uses a function such as `clock_gettime' (and
181 is not linked with -lrt) will no longer implicitly load the pthreads
182 library at runtime and so will not suffer the overheads associated with
183 multi-thread support in other code such as the C++ runtime library.
185 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
190 * The following bugs are resolved with this release:
192 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
193 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
194 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
195 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
196 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
197 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
198 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
199 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
200 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
201 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
202 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
203 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
204 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
205 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
206 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
207 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
208 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
209 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
210 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
211 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
212 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
213 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
216 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
217 configuring glibc with:
218 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
219 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
220 Implemented by H.J. Lu.
224 + define static_assert
226 + do not declare gets
228 + declare at_quick_exit and quick_exit also for ISO C11
230 + aligned_alloc. NB: The code is deliberately allows the size parameter
231 to not be a multiple of the alignment. This is a moronic requirement
232 in the standard but it is only a requirement on the caller, not the
237 + uchar.h support added
239 + CMPLX, CMPLXF, CMPLXL added
241 Implemented by Ulrich Drepper.
243 * Support for the IA-64 has been moved to ports.
245 * Remove support for anything but ELF binary format
247 * Checking versions of poll, ppoll added.
248 Implemented by Ulrich Drepper.
250 * More generic and 64-bit performance optimizations to math functions.
251 Implemented by Ulrich Drepper.
253 * New configure option --enable-obsolete-rpc makes the deprecated RPC
254 headers and functions available at compile time as they were before
255 version 2.14. This option will be removed at some time in the future
256 after the TI-RPC library becomes fully sufficient for the needs of
257 existing applications.
259 * Compatibility code for Linux kernel versions before 2.4 has been removed.
260 Note that glibc is not expected to work with any Linux kernel version
263 * New header <sys/auxv.h> and function getauxval allowing easy access to
264 the AT_* key-value pairs passed from the Linux kernel. The header also
265 defines the HWCAP_* bits associated with the AT_HWCAP key.
267 * New locales: mag_IN
269 * New configure option --enable-systemtap builds SystemTap static probes
270 into libc for setjmp and longjmp and into libpthread for various operations.
271 So far the setjmp/longjmp probes and some of the libpthread probes are
272 provided only for i*86 and x86_64.
273 Implemented by Roland McGrath and Rayson Ho.
275 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
277 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
280 * More optimized functions for SPARC. Implemented by David S. Miller.
282 * Improved support for cross-compilation, especially bootstrap builds
283 without a previously built glibc.
285 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
286 Chris Metcalf from Tilera.
288 * Support for the old ARM ABI has been removed from ports. Only the EABI is
289 now supported for ARM processors.
291 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
292 as the name of the dynamic linker, to distinguish it from the
293 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
295 * Support for CRIS has been removed from ports.
297 * A new class of installed header has been documented for low-level
298 platform-specific functionality. PowerPC added the first instance with a
299 function to provide time base register access. Contributed by Tulio
300 Magno Quites Machado Filho.
302 * ix86 configurations now install header files that are consistent with
303 what x86-64 configurations install. These same header files can be used
304 for -m32, -m64, or -mx32 builds.
305 Contributed by H.J. Lu.
307 * Math library bug fixes. A thorough audit of all open math library bugs was
308 conducted by Joseph Myers. Significant progress was made on many math
309 library bugs resulting in more accurate exceptions and function results.
310 Many thanks to all those that contributed including Andreas Jaeger for his
311 patch review and work on the x87 trigonometric instruction issues.
313 * Timezone data is no longer installed. Timezone-related binaries and scripts
314 will continue to be installed. Users should obtain their timezone data from
315 their distribution provider or from the tzdata package at
316 <ftp://munnari.oz.au/pub/>.
320 * The following bugs are resolved with this release:
322 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
323 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
324 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
325 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
326 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
327 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
328 13484, 13506, 13515, 13523, 13524, 13538, 13540
330 * New program pldd to list loaded object of a process
331 Implemented by Ulrich Drepper.
333 * Add nss_db support back to glibc. No more dependency on Berkeley db
334 and support for initgroups lookups.
335 Implemented by Ulrich Drepper.
337 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
338 Contributed by HJ Lu.
340 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
341 Contributed by HJ Lu.
343 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
344 on x86-32 and x86-64.
345 Contributed by Liubov Dmitrieva.
347 * Optimized strchr and strrchr for SSE on x86-32.
348 Contributed by Liubov Dmitrieva.
350 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
351 for x86-64 and x86-32.
352 Contributed by Liubov Dmitrieva.
354 * New interfaces: scandirat, scandirat64
355 Implemented by Ulrich Drepper.
357 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
358 Implemented by Ulrich Drepper.
360 * nscd now also caches the netgroup database.
361 Implemented by Ulrich Drepper.
363 * Integrate libm with gcc's -ffinite-math-only option.
364 Implemented by Ulrich Drepper.
366 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
367 to math functions. Implemented by Ulrich Drepper.
369 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
370 Implemented by Ulrich Drepper.
372 * New Linux interfaces: process_vm_readv, process_vm_writev
374 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
375 Implemented by Ulrich Drepper.
377 * Optimized nearbyint and strcasecmp for PPC.
378 Implemented by Adhemerval Zanella.
380 * New locales: bho_IN, unm_US, es_CU, ta_LK
384 * The following bugs are resolved with this release:
386 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
387 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
388 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
389 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
390 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
391 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
392 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
393 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
394 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
395 12795, 12811, 12813, 12814, 12841
397 * The RPC implementation in libc is obsoleted. Old programs keep working
398 but new programs cannot be linked with the routines in libc anymore.
399 Programs in need of RPC functionality must be linked against TI-RPC.
400 The TI-RPC implementation is IPv6 enabled and there are other benefits.
402 Visible changes of this change include (obviously) the inability to link
403 programs using RPC functions without referencing the TI-RPC library and the
404 removal of the RPC headers from the glibc headers.
405 Implemented by Ulrich Drepper.
407 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
408 syncfs, setns, sendmmsg
410 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
411 yue_HK, lij_IT, mhr_RU
413 * New encodings: CP770, CP771, CP772, CP773, CP774
415 * New program sotruss to trace calls through PLTs
416 Implemented by Ulrich Drepper.
418 * The malloc hook implementation is marked deprecated and will be removed
419 from the default implementation in the next version. The design never
420 worked ever since the introduction of threads. Even programs which do
421 not create threads themselves can use multiple threads created internally.
425 * The following bugs are resolved with this release:
427 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
428 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
429 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
430 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
433 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
435 * POWER7 optimizations: memset, memcmp, strncmp
437 * New optimized string functions for x86-64: strnlen (SSE2),
438 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
439 Implemented by Ulrich Drepper.
443 * The following bugs are resolved with this release:
445 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
446 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
447 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
448 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
449 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
450 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
451 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
452 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
454 * New interfaces: pthread_getname_np, pthread_setname_np
456 * New Linux interface: recvmmsg
458 * STT_GNU_IFUNC implemented for Sparc by David Miller.
460 * The dynamic linker now recognizes supported ABI versions from the
461 EI_ABIVERSION field in the ELF header.
462 Implemented by Ulrich Drepper.
464 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
465 will not be used to fill in password fields in the passwd.byname replies.
466 Instead it is used to synthesize the shadow.byname table, should it be
467 missing. This is a useful mode in some installations involving Solaris.
468 Implemented by Ulrich Drepper.
470 * New locales: kok_IN, sq_MK, cv_RU
474 * The following bugs are resolved with this release:
476 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
477 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
478 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
479 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
480 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
481 10789, 10817, 10823, 10840, 10847
483 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
485 Implemented by Ulrich Drepper.
487 * Checking version of longjmp added that fails if an uninitialized stack
488 frame would be created. Implemented by Ulrich Drepper.
490 * STT_GNU_IFUNC is now supported in static executables.
491 Implemented by H.J. Lu.
493 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
495 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
496 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
497 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
498 Contributed by H.J. Lu.
500 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
501 Implemented by Ulrich Drepper.
503 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
505 Contributed by H.J. Lu.
507 * Support for fma instruction in AVX on x86-64.
508 Implemented by H.J. Lu and Ulrich Drepper.
510 * AVX support in x86-64 auditing support in ld.so.
511 Implemented by H.J. Lu.
513 * STB_GNU_UNIQUE support added.
514 Implemented by Ulrich Drepper.
516 * Implement second fallback mode for optimized DNS lookup for even more
517 broken environments. If two requests from the same port are not
518 handled correctly close the socket and open a new one before sending
519 the second request. The 'single-request-reopen' option in /etc/resolv.conf
520 can be used to select this mode right away, instead of rediscovering the
521 necessity is every process again.
522 Implemented by Ulrich Drepper.
524 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
525 Implemented by Adam Tkac.
527 * Optimized iconv conversions for S390x.
528 Implemented by Andreas Krebbel.
530 * Using condvars with PI mutexes is now more efficient due to kernel
531 support for requeueing to PI futexes. NPTL support added for x86-64.
532 Implemented by Ulrich Drepper.
534 * New locales: ps_AF, my_MM
538 * The following bugs are resolved with this release:
540 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
541 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
542 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
543 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
544 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
546 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
547 Implemented by Ulrich Drepper.
549 * New Linux interfaces: accept4, fallocate, fallocate64.
550 Implemented by Ulrich Drepper.
552 * Correct declarations of string function when used in C++ code. This
553 could lead to compile errors for invalid C++ code.
555 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
558 * New POSIX 2008 interface: psiginfo
559 Implemented by Ulrich Drepper.
561 * New ISO C++1x interfaces: quick_exit, at_quick_exit
562 Implemented by Ulrich Drepper.
564 * Support for selecting between multiple function definitions at runtime
565 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
567 * The libcrypt library can now use the hash function implementations in
568 NSS. Implemented by Ulrich Drepper.
570 * The malloc implementation can be compiled to be less memory efficient
571 but higher performing in multi-threaded programs.
572 Implemented by Ulrich Drepper.
574 * New locales: nan_TW@latin, ks_IN
576 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
577 Implemented by Ulrich Drepper.
579 * Extended printf hook support. It is possible to use user-defined types
580 and extend existing format specifiers.
581 Implemented by Ulrich Drepper.
583 * Handling for group shadow files has been added.
584 Implemented by Ulrich Drepper.
586 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
587 servers (the case, e.g., for some people using the built-in DNS
588 server in ADSL modems/routers). There is a once-per-process timeout
589 in case of a broken server. To avoid it, users can run nscd or put
590 'options single-request' in /etc/resolv.conf.
591 Implemented by Ulrich Drepper.
595 * The following bugs are resolved with this release:
597 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
598 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
599 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
600 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
601 6968, 6974, 6980, 6995, 7008, 7009, 7029
603 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
604 up at the same time. Implemented by Ulrich Drepper.
606 * TLS descriptors for LD and GD on x86 and x86-64.
607 Implemented by Alexandre Oliva.
609 * getaddrinfo now handles DCCP and UDPlite.
610 Implemented by Ulrich Drepper.
612 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
613 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
614 Implemented by Ulrich Drepper.
616 * New implementation of memmem, strstr, and strcasestr which is O(n).
617 Implemented by Eric Blake.
619 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
621 * Implement "e" option for popen to open file descriptor with the
622 close-on-exec flag set. Implemented by Ulrich Drepper.
624 * Implement "b" mode for fmemopen. In this mode writes writes don't
625 implicitly add a NUL byte and seeks from the end of the buffer really
626 use the buffer end, not the string length as the basis.
627 Implemented by Ulrich Drepper.
629 * Many functions, exported and internal, now atomically set the close-on-exec
630 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
632 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
634 Implemented by Pravin Satpute.
636 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
640 * The following bugs are resolved with this release:
642 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
643 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
644 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
645 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
646 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
647 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
648 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
650 * New locales: bo_CN, bo_IN, shs_CA.
652 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
654 * Sorting rules for some Indian languages (Devanagari and Gujarati).
655 Implemented by Pravin Satpute.
657 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
659 * nscd caches now all timeouts for DNS entries
660 Implemented by Ulrich Drepper.
662 * nscd is more efficient and wakes up less often.
663 Implemented by Ulrich Drepper.
665 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
666 vdprintf, and obstack_vprintf.
667 Implemented by Jakub Jelinek.
669 * Faster memset for x86-64.
670 Implemented by Harsha Jagasia and H.J. Lu.
672 * Faster memcpy on x86.
673 Implemented by Ulrich Drepper.
675 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
676 Implemented by Ulrich Drepper.
678 * Faster sqrt and sqrtf implemention for some PPC variants.
679 Implemented by Steven Munroe.
683 * The following bugs are resolved with this release:
685 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
686 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
687 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
688 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
689 5071, 5103, 5104, 5112, 5113, 5184, 5186
691 * More checking functions: fread, fread_unlocked, open*, mq_open.
692 Implemented by Jakub Jelinek and Ulrich Drepper.
694 * Extend fortification to C++. Implemented by Jakub Jelinek.
696 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
697 by not recognizing 'a' as a modifier when those specs are requested.
698 Implemented by Jakub Jelinek.
700 * PPC optimizations to math and string functions.
701 Implemented by Steven Munroe.
703 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
704 options to be passed. Implemented by Ulrich Drepper.
706 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
708 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
709 Implemented by Ulrich Drepper.
711 * Handle private futexes in the NPTL implementation.
712 Implemented by Jakub Jelinek and Ulrich Drepper.
714 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
715 Implemented by Roland McGrath and Ulrich Drepper.
717 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
719 * SHA-256 and SHA-512 based password encryption.
720 Implemented by Ulrich Drepper.
722 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
723 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
726 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
727 Implemented by Ulrich Drepper.
731 * The following bugs are resolved with this release:
733 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
734 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
735 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
736 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
737 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
738 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
739 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
742 * New Linux interfaces: epoll_pwait, sched_getcpu.
744 * New generic interfaces: strerror_l.
746 * nscd can now cache the services database. Implemented by Ulrich Drepper.
750 * The following bugs are resolved with this release:
752 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
753 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
754 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
755 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
756 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
757 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
758 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
759 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
760 3225, 3251, 3252, 3253, 3273
762 * For Linux, the sorting of addresses returned by getaddrinfo now also
763 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
764 Implemented by Ulrich Drepper.
766 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
767 Implemented by Ulrich Drepper.
769 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
771 * New iconv module for MIK. Contributed by Alexander Shopov.
773 * For sites with broken group and/or passwd database, the auto-propagate
774 option of nscd can prevent creating ID lookup entries from the results
775 of a name lookup and vice versa. This usually is no problem but some
776 site might have problems with the default behavior.
777 Implemented by Ulrich Drepper.
779 * Iterating over entire database in NIS can be slow. With the
780 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
781 to trade time for memory. The entire database will be read at once.
782 Implemented by Ulrich Drepper.
784 * The interfaces introduced in RFC 3542 have been implemented by
787 * Support for the new ELF hash table format was added by Ulrich Drepper.
789 * Support for priority inheritance mutexes added by Jakub Jelinek and
792 * Support for priority protected mutexes added by Jakub Jelinek.
794 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
795 or_IN, csb_PL, fy_NL, sr_ME.
799 * More overflow detection functions.
801 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
802 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
804 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
805 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
806 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
807 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
808 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
809 by Masahide Washizawa.
811 * It is now possible to install audit libraries for the dynamic linker using
812 LD_AUDIT. Implemented by Ulrich Drepper.
814 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
815 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
816 For a libc and libpthread that works well on Linux 2.4 kernels, we
817 recommend using the stable 2.3 branch.
819 * The new function open_wmemstream acts like open_memstream,
820 but uses a wchar_t wide character buffer.
822 * The new function ppoll is an improved version of poll, similar to pselect.
824 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
825 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
826 renameat, unlinkat, linkat, symlinkat, readlinkat.
828 * New Linux kernel system calls: unshare,
829 inotify_init, inotify_add_watch, inotify_rm_watch.
831 * The euidaccess function is now also known by the alias eaccess,
832 for compatibility with some other systems.
834 * Timezone data updated to 2006b version.
838 * The following bugs are resolved with this release:
840 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
841 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
842 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
843 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
844 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
845 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
847 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
849 * As of this release, GCC 4 can be used to compile the C Library.
851 * Timezone data updated to 2005m version.
855 * The following bugs are resolved with this release:
857 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
858 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
859 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
860 777, 787, 821, 822, 823, 825
862 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
866 * Support for RFC 3678. Real implementations exist only for Linux so far.
867 Implemented by Ulrich Drepper.
869 * nscd can now cache entries persistently. Expiring entries are reloaded.
870 For speedups the cache can be shared in memory with client processes.
871 Implemented by Ulrich Drepper.
873 * nscd can now perform SELinux checks.
874 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
876 * getaddrinfo queries are now cached. Canonical name lookup is performed
878 Implemented by Ulrich Drepper.
880 * The nothrow function attribute is used when headers are used by gcc when
881 compiling C code. This can avoid significant amounts of exception
884 * The malloc functions perform more error checking and are stricter when
885 it comes to reacting on errors. The default action is to terminate
886 the process after showing an error message. Implemented by Ulrich Drepper.
888 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
889 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
891 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
892 namespaces using the new function dlmopen(). This feature is of course,
893 like most other dynamic loading functionality, not available in statically
894 linked applications. Implemented by Ulrich Drepper.
896 * Low-overhead boundary checking variants of string and some stdio functions
897 were added. These are to be used in conjunction with a gcc patch by
898 Jakub Jelinek which adds calls to these functions if possible.
899 Implemented by Jakub Jelinek and Ulrich Drepper.
901 * Old code for several operating systems and machine architectures that
902 have not been in working condition in a long time have been removed from
903 the main source tree maintained by the GNU C Library's maintainers.
904 These files are now reside in the separate `ports' source module
905 that is usable as an add-on when building the library.
909 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
910 interrogate the dynamic linker, compatible with the Solaris interface.
912 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
913 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
915 * getifaddrs now uses the netlink interface on Linux to get its information.
916 Implemented by Thorsten Kukuk.
918 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
919 Implemented by Ulrich Drepper.
921 * support for non-executable stacks on x86 has been added. Changes mostly
924 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
927 * getaddrinfo now performs destination address selection according to
932 * Thread-safe interfaces for many functions that access locale data
933 were added in version 2.3, but these features were omitted from NEWS.
934 Many functions have variants with an `_l' suffix that take a `locale_t'
935 object as a parameter rather than consulting the current locale.
936 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
937 create and maintain `locale_t' objects. Additionally, the new function
938 `uselocale' sets "the current locale" (as used by functions not so
939 parameterized) set for an individual thread. These features were added
940 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
942 * The functions getresuid, getresgid, setresuid, and setresgid, which
943 have long been available on Linux, are now declared in <unistd.h>
944 and are now also available on the Hurd.
946 * ELF thread-local storage support (TLS) now works on x86-64.
948 * The new dynamic string token $LIB is expanded in shared library names.
949 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
951 * Aldy Hernandez contributed complete software floating point support for
952 PowerPC machines with no FPU.
954 * fexecve is implemented on Linux.
956 * The `btowc' function should work at least twice as fast due to
957 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
959 * With approriate thread add-ons cancelable functions are now implemented
960 in libc.so as well. No need to call the function in libpthread. This
961 change allowed to finally disable the incorrect and expensive handling
962 of weak definition in ld.so.
964 * Yet more PLT entries in libc.so have been removed. We finally arrived
965 at the bare minimum. Startup times improved appropriately.
967 * Support for the new Linux/x86 system call interface was added. The
968 AT_SYSINFO auxiliary vector entry is recognized and handled.
972 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
975 * iconv (the program and the interface) now accepts empty names (excluding
976 options like //TRANSLIT) to mean "use charset of current locale".
978 * localedef can now transliterate characters in strings which are not in
979 the provided charmap. The information from the input locale is used.
981 * Prelinking support was added for ELF targets. This requires additional
982 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
984 * Read-only stdio streams now use mmap to speed up operation by eliminating
985 copying and buffer underflows. To use add 'm' to the mode string of
986 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
988 * The malloc functions were completely rewritten by Wolfram Gloger based
989 on Doug Lea's malloc-2.7.0.c.
991 * Isamu Hasegawa contributed a completely new and POSIX-conformant
992 implementation of regex.
994 * Bruno Haible upgraded the iconv and locale implementation to support
997 * Contents of the LC_* and LANG environment variables in the CEN style are
998 not recognized anymore. It never was used. Change by Ulrich Drepper.
1000 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1001 thread-local storage (TLS) ABI on some platforms.
1002 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1004 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1005 EUC-JISX0213, and TSCII.
1007 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1008 BSD-compatible interface for getting all network interface addresses.
1009 Implementation for IPv4 by Roland McGrath.
1011 * Loading of locale data is faster due to the introduction of a locale
1012 archive. Implemented by Roland McGrath and Ulrich Drepper.
1014 * Startup times are significantly reduced by not using exported functions
1015 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1018 * Steven Munroe contributed a port to PowerPC64/Linux.
1022 * The Hurd now uses the GNU libio implementation of stdio rather than the
1023 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1025 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1026 with the same behavior as the Linux system call of the same name.
1030 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1031 128-bit long double format.
1033 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1034 IBM1161, and IBM1162 charsets.
1036 * Andreas Jaeger contributed a port to x86-64/Linux.
1038 * Peter Bruin contributed a port to PowerPC/Hurd.
1040 * libc functions using I/O streams now can handle wide-oriented streams
1043 * optimizations in the dynamic linker. Binaries created by recent binutils
1044 versions start up quicker due to reduced time spent on relocations.
1046 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1050 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1051 asinh, atanh, j0 for the 128-bit long double format.
1053 * Bruno Haible updated all the code handling Unicode in some form to
1054 support Unicode 3.1.
1056 * Speed of regex for single-byte locales is back to previous levels.
1057 Patch by Isamu Hasegawa.
1059 * Alpha, SPARC, and IA-64 now also using floating stacks.
1061 * Startup time of internationalized applications greatly improved through
1062 iconv cache. Use iconvconfig to generate the cache file.
1063 Contributed by Ulrich Drepper.
1065 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1066 severe performance problems. Patch by David Mosberger.
1068 * The Hurd port got a lot more functionality like AIO, various stdio
1069 extensions, etc. Mainly done by Roland McGrath.
1071 * mtrace can now lookup symbols in shared libraries.
1075 * Intel's IA-64 math library is largely integrated. It provides fast and
1076 accurate implementatations for most basic and standard math functions
1077 in float, double, and long double format.
1079 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1080 and asin for the 96-bit long double format and asin, log, tan for the
1081 128-bit long double format.
1083 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1084 The basic double functions exist today. Contributed by Abraham Ziv
1085 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1086 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1088 * An asynchronous name lookup library was added. The interface is designed
1089 after POSIX AIO. The proposal was circulated beforehand to get comments.
1090 No negative ones came in. Implemented by Ulrich Drepper.
1092 * Port to S390/64bit contributed by Martin Schwidefsky
1093 <schwidefsky@de.ibm.com>.
1095 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1096 of functions for Linux/IA-64.
1098 * The RPC code is now thread safe. Threads can now use the same service
1099 of different services at the same time. Patch by Eric Norum
1100 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1102 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1103 family of functions for Linux/S390.
1105 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1106 of functions for Linux/x86.
1108 * Port to Linux/CRIS contributed by Axis Communications.
1112 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1113 we can now check for namespace violations and missing declarations. The
1114 result is that almost all headers are now Unix-compliant (as defined in
1115 the upcoming XPG6). The negative side is that some programs might need
1116 corrections, too, if they depend on the incorrect form of the headers in
1117 previous versions which defined too many symbols and included too many
1120 * regex now handles multibyte character sets correctly.
1121 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1123 * iconv (the program) does now conform to the upcoming XPG6 and handles
1124 charmaps. Instead of the charset names the path of charmaps can be
1125 provided and the conversion happens based on this data.
1126 Contributed by Ulrich Drepper.
1128 * The locale program now provides detailed information about the installed
1133 only lists the names of the supported locales
1137 provides details such as country, language, and codeset name.
1138 Contributed by Ulrich Drepper.
1142 * The gencat program now parses the input file according to the charset
1143 selected by the LC_CTYPE category. This is important for stateful
1144 character sets. To make generating catalogs easier there is a way
1145 to overwrite the charset selected by the locale: before the first
1146 message or $ quote line the catalog can contain a line like
1148 $ codeset=ISO-8859-2
1150 to select the charset (ISO-8859-2 in this case).
1152 Implemented by Shinya Hanataka and Ulrich Drepper.
1154 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1155 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1156 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1158 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1159 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1161 * The LANGUAGE environment variable is now ignored unless the locale is
1162 changed from the default "C" locale.
1164 * The usual bug fixes.
1168 * Greg McGary added runtime support for bounds checking using gcc's
1169 new -fbounded-pointers option. ix86 target is complete. PowerPC
1172 * Thorsten Kukuk added secure mode support to nscd.
1174 * The Berkeley db libraries have been removed.
1176 Related, the nss_db module is now in a separate package since it
1177 obviously requires a database library being available.
1179 * Wide character I/O streams implemented by Ulrich Drepper.
1181 * Functions from the extended socket API added by Ulrich Drepper.
1183 * Functions feenableexcept and fedisableexcept to control the
1184 behaviour of individual exceptions have been added by Andreas Jaeger.
1186 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1188 * The resolver code has been updated from bind 8.2.3-T5B which supports
1189 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1192 This change could in some situations effect backward compatibility. Since
1193 now `_res' is a thread-local instead of a global variable, modifying it
1194 in one thread does not have any effect in other threads.
1196 The resolver library was also extended to allow IPv6 as the transport
1197 protocol for the requests. This work was done by Stig Venaas.
1199 * Compatibility code for K&R C compilers has been removed from the
1200 header files. A ISO C compiler is needed to use the library
1201 (conforming to either C89 or C99 standard).
1203 * Complete rewrite of the localedef program to support multibyte character
1204 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1205 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1206 Implemented by Ulrich Drepper.
1208 Bruno Haible significantly improved the generation and use of the data
1209 structures for the wide character tables.
1211 * Plural handling in gettext implemented by Ulrich Drepper.
1213 * The utmp daemon has been removed.
1215 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1217 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1220 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1222 * POSIX barriers implemented by Kaz Kylheku.
1224 * POSIX spawn function family implemented by Ulrich Drepper.
1226 * POSIX spinlocks are now available.
1228 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1230 * the configure option --enable-kernel=X.Y.Z allows to strip out
1231 compatibility for kernel versions before X.Y.Z. This is currently only
1232 implemented for Linux.
1234 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1235 field sin6_scope_id. This means that all programs using IPv6 should be
1236 recompiled. Don't expect binary compatibility with previous glibc
1239 * various conversion modules for IBM character sets contributed by
1242 * IA-64 port by Jes Sorensen and HJ Lu.
1256 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1258 * New xdr functions are added; some rpc functions are now 64bit clean.
1260 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1262 * Fixed known incompatibilities with glibc 2.0.
1264 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1266 * Optimized a number of functions (especially the ELF dynamic loader).
1268 * Update timezone data files.
1270 * lots of charmaps corrections
1272 * some new locale definitions and charmaps
1277 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1278 conform to POSIX member type requirements. Symbol versions have been
1279 adjusted as needed within the library, and for direct use by applications,
1280 but there is potential for problems if third-party libraries use
1281 struct timeval as part of their interface. This does not present
1282 a problem for X and other "essential" system libraries.
1284 * An additional locale model to support C++ Standard Library locale
1285 model and probably more was implemented by Ulrich Drepper.
1287 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1290 * Miles Bader provided the `argp' function family to support hierachical
1291 command line argument parsing, layered on top of getopt.
1293 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1295 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1298 * scanf recognizes the %a and %A format for scanning floating point numbers.
1300 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1301 information and interfaces for the available integer types.
1303 * about 130 new math functions were added to implement the ISO C9x math
1306 * the new header <complex.h> contains definitions of the complex math
1307 functions from ISO C 9X.
1309 * the new header <tgmath.h> defines generic macros to use complex or
1310 real valued functions.
1312 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1314 * Andreas Jaeger provided a test suite for the math library.
1316 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1318 * Ulrich Drepper added character set conversion functions (iconv).
1320 * Optimized string functions have been added.
1322 * The localedata addon is now part of glibc.
1324 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1326 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1327 daemon for NSS (nscd).
1329 Missing a better place here are some numbers on improvements. Under
1330 Linux 2.1.125 un-tar-ing the kernel sources takes
1334 using local files 12.19s 6.88s 22.91s
1336 using NIS 13.92s 8.91s 26.34s
1338 using NIS & nscd 10.37s 7.34s 25.30s
1340 using NIS+ 27.57s 30.37s 640.46s
1342 using NIS+ & nscd 10.25s 7.83s 26.51s
1344 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1346 Keep in mind that non-namelookup related operations dominate above times.
1347 It was just a common complain that using NIS+ unpacking the kernel is
1350 [1] The old nscd implementation is not available anymore since it was
1351 distributed with glibc up to version 2.0.98 and thus is now replaced.
1353 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1355 * Mark Kettenis provided a Hesiod NSS module.
1357 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1358 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1360 * rcmd can now handle netgroups (Dick Streefland).
1362 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1365 * Support for the IPv6 protocol has been added to the socket API, as per the
1366 latest draft standards.
1368 * Support for Linux 2.2 has been added.
1370 * Interface changes relative to the latest 2.0.x release:
1371 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1372 addseverity NEW: Unix98
1373 alphasort64 NEW: LFS
1374 argp_err_exit_status NEW: argp, GNU ext
1375 argp_error NEW: argp, GNU ext
1376 argp_failure NEW: argp, GNU ext
1377 argp_help NEW: argp, GNU ext
1378 argp_parse NEW: argp, GNU ext
1379 argp_program_bug_address NEW: argp, GNU ext
1380 argp_program_version NEW: argp, GNU ext
1381 argp_program_version_hook NEW: argp, GNU ext
1382 argp_state_help NEW: argp, GNU ext
1383 argp_usage NEW: argp, GNU ext
1384 authdes_create NEW: Secure RPC
1385 authdes_getucred NEW: Secure RPC
1386 authdes_pk_create NEW: Secure RPC
1387 backtrace NEW: GNU ext.
1388 backtrace_symbols NEW: GNU ext.
1389 backtrace_symbols_fd NEW: GNU ext.
1391 cacosf NEW: ISO C 9x
1392 cacosh NEW: ISO C 9x
1393 cacoshf NEW: ISO C 9x
1394 cacoshl NEW: ISO C 9x
1395 cacosl NEW: ISO C 9x
1402 casinf NEW: ISO C 9x
1403 casinh NEW: ISO C 9x
1404 casinhf NEW: ISO C 9x
1405 casinhl NEW: ISO C 9x
1406 casinl NEW: ISO C 9x
1408 catanf NEW: ISO C 9x
1409 catanh NEW: ISO C 9x
1410 catanhf NEW: ISO C 9x
1411 catanhl NEW: ISO C 9x
1412 catanl NEW: ISO C 9x
1413 cbc_crypt NEW: Secure RPC
1417 ccoshf NEW: ISO C 9x
1418 ccoshl NEW: ISO C 9x
1424 cimagf NEW: ISO C 9x
1425 cimagl NEW: ISO C 9x
1426 clearerr_locked REMOVED
1427 clntunix_create NEW: sunrpc ext
1429 clog10 NEW: ISO C 9x
1430 clog10f NEW: ISO C 9x
1431 clog10l NEW: ISO C 9x
1441 cprojf NEW: ISO C 9x
1442 cprojl NEW: ISO C 9x
1444 crealf NEW: ISO C 9x
1445 creall NEW: ISO C 9x
1450 csinhf NEW: ISO C 9x
1451 csinhl NEW: ISO C 9x
1454 csqrtf NEW: ISO C 9x
1455 csqrtl NEW: ISO C 9x
1459 ctanhf NEW: ISO C 9x
1460 ctanhl NEW: ISO C 9x
1462 des_setparity NEW: Secure RPC
1463 ecb_crypt NEW: Secure RPC
1464 endutxent NEW: Unix98
1466 exp10f NEW: ISO C 9x
1467 exp10l NEW: ISO C 9x
1471 fattach NEW: STREAMS
1472 fdetach NEW: STREAMS
1476 feclearexcept NEW: ISO C 9x
1477 fegetenv NEW: ISO C 9x
1478 fegetexceptflag NEW: ISO C 9x
1479 fegetround NEW: ISO C 9x
1480 feholdexcept NEW: ISO C 9x
1482 feraiseexcept NEW: ISO C 9x
1483 ferror_locked REMOVED
1484 fesetenv NEW: ISO C 9x
1485 fesetexceptflag NEW: ISO C 9x
1486 fesetround NEW: ISO C 9x
1487 fetestexcept NEW: ISO C 9x
1488 feupdateenv NEW: ISO C 9x
1489 fflush_locked REMOVED
1493 fgets_unlocked NEW: GNU ext.
1494 fileno_locked REMOVED
1506 fputc_locked REMOVED
1507 fputs_unlocked NEW: GNU ext.
1508 fread_unlocked NEW: GNU ext.
1513 fstatvfs NEW: Unix98
1517 ftruncate64 NEW: LFS
1519 fwrite_unlocked NEW: GNU ext.
1520 gai_strerror NEW: IPv6
1524 getchar_locked REMOVED
1526 getdate_err NEW: Unix98
1527 getdate_r NEW: GNU ext.
1529 getnameinfo NEW: IPv6
1530 getnetname NEW: Secure RPC
1531 getpmsg NEW: STREAMS
1532 getpt NEW: Unix98 PTY
1533 getrlimit64 NEW: LFS
1534 getutxent NEW: Unix98
1535 getutxid NEW: Unix98
1536 getutxline NEW: Unix98
1537 glob64 NEW: GNU ext.
1538 globfree64 NEW: GNU ext.
1539 gnu_get_libc_release NEW: GNU ext.
1540 gnu_get_libc_version NEW: GNU ext.
1541 grantpt NEW: Unix98 PTY
1542 host2netname NEW: Secure RPC
1544 iconv_close NEW: iconv
1545 iconv_open NEW: iconv
1546 if_freenameindex NEW: IPv6
1547 if_indextoname NEW: IPv6
1548 if_nameindex NEW: IPv6
1549 if_nametoindex NEW: IPv6
1550 in6addr_any NEW: IPv6
1551 in6addr_loopback NEW: IPv6
1552 inet6_isipv4mapped NEW: IPv6
1553 isastream NEW: STREAMS
1554 iswblank NEW: GNU ext.
1555 key_decryptsession NEW: Secure RPC
1556 key_decryptsession_pk NEW: Secure RPC
1557 key_encryptsession NEW: Secure RPC
1558 key_encryptsession_pk NEW: Secure RPC
1559 key_gendes NEW: Secure RPC
1560 key_get_conv NEW: Secure RPC
1561 key_secretkey_is_set NEW: Secure RPC
1562 key_setnet NEW: Secure RPC
1563 key_setsecret NEW: Secure RPC
1564 llrint NEW: ISO C 9x
1565 llrintf NEW: ISO C 9x
1566 llrintl NEW: ISO C 9x
1567 llround NEW: ISO C 9x
1568 llroundf NEW: ISO C 9x
1569 llroundl NEW: ISO C 9x
1574 lrintf NEW: ISO C 9x
1575 lrintl NEW: ISO C 9x
1576 lround NEW: ISO C 9x
1577 lroundf NEW: ISO C 9x
1578 lroundl NEW: ISO C 9x
1580 makecontext NEW: Unix98
1581 mempcpy NEW: GNU ext.
1584 modify_ldt NEW: kernel
1588 nearbyint NEW: ISO C 9x
1589 nearbyintf NEW: ISO C 9x
1590 nearbyintl NEW: ISO C 9x
1591 netname2host NEW: Secure RPC
1592 netname2user NEW: Secure RPC
1593 nexttoward NEW: ISO C 9x
1594 nexttowardf NEW: ISO C 9x
1595 nexttowardl NEW: ISO C 9x
1599 passwd2des NEW: Secure RPC
1601 pow10f NEW: GNU ext.
1602 pow10l NEW: GNU ext.
1605 printf_size NEW: GNU ext.
1606 printf_size_info NEW: GNU ext.
1607 profil_counter REMOVED
1608 pthread_mutexattr_getkind_np REPLACED
1609 pthread_mutexattr_setkind_np REPLACED
1610 ptsname NEW: Unix98 PTY
1611 ptsname_r NEW: Unix98 PTY
1613 putchar_locked REMOVED
1614 putgrent NEW: GNU ext.
1616 putpmsg NEW: STREAMS
1617 pututxline NEW: Unix98
1621 readdir64_r NEW: LFS
1622 remquo NEW: ISO C 9x
1623 remquof NEW: ISO C 9x
1624 remquol NEW: ISO C 9x
1626 roundf NEW: ISO C 9x
1627 roundl NEW: ISO C 9x
1629 scalbln NEW: ISO C 9x
1630 scalblnf NEW: ISO C 9x
1631 scalblnl NEW: ISO C 9x
1633 sendfile NEW: kernel
1634 setcontext NEW: Unix98
1635 setrlimit64 NEW: LFS
1636 setutxent NEW: Unix98
1638 sigignore NEW: Unix98
1639 sigqueue NEW: POSIX.1b
1640 sigrelse NEW: Unix98
1641 sigset NEW: POSIX.1b
1642 sigtimedwait NEW: POSIX.1b
1643 sigwaitinfo NEW: POSIX.1b
1644 sincos NEW: GNU ext.
1645 sincosf NEW: GNU ext.
1646 sincosl NEW: GNU ext.
1650 strcasestr NEW: GNU ext.
1651 strtoimax NEW: ISO C 9x
1652 strtoumax NEW: ISO C 9x
1653 strverscmp NEW: GNU ext.
1654 svcauthdes_stats NEW: Secure RPC
1655 svcunix_create NEW: sunrpc etx
1656 svcunixfd_create NEW: sunrpc ext
1657 swapcontext NEW: Unix98
1658 tcgetsid NEW: Unix98 PTY
1659 tdestroy NEW: GNU ext.
1660 tgamma NEW: ISO C 9x
1661 tgammaf NEW: ISO C 9x
1662 tgammal NEW: ISO C 9x
1666 truncf NEW: ISO C 9x
1667 truncl NEW: ISO C 9x
1669 unlockpt NEW: Unix98 PTY
1670 updwtmpx NEW: Unix98
1671 user2netname NEW: Secure RPC
1672 utmpxname NEW: Unix98
1673 versionsort NEW: GNU ext.
1674 versionsort64 NEW: GNU ext.
1676 wcscasecmp NEW: GNU ext.
1677 wcsncasecmp NEW: GNU ext.
1678 wcsnlen NEW: GNU ext.
1679 wcstoimax NEW: ISO C 9x
1680 wcstoll NEW: ISO C 9x
1681 wcstoull NEW: ISO C 9x
1682 wcstoumax NEW: ISO C 9x
1684 wordexp NEW: POSIX.2
1685 wordfree NEW: POSIX.2
1686 write_profiling REMOVED
1687 xdecrypt NEW: Secure RPC
1688 xdr_authdes_cred NEW: Secure RPC
1689 xdr_authdes_verf NEW: Secure RPC
1690 xdr_cryptkeyarg NEW: Secure RPC
1691 xdr_cryptkeyarg2 NEW: Secure RPC
1692 xdr_cryptkeyres NEW: Secure RPC
1693 xdr_getcredres NEW: Secure RPC
1694 xdr_key_netstarg NEW: Secure RPC
1695 xdr_key_netstres NEW: Secure RPC
1696 xdr_keybuf NEW: Secure RPC
1697 xdr_keystatus NEW: Secure RPC
1698 xdr_netnamestr NEW: Secure RPC
1699 xdr_sizeof NEW: Secure RPC
1700 xdr_unixcred NEW: sunrpc ext
1701 xencrypt NEW: Secure RPC
1702 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1713 * inet_ntoa is thread-safe
1715 * updwtmp is moved from libutil to libc
1717 * rewrite of cbrt function
1719 * update of timezone data
1733 * add atoll function
1735 * fix complex problems in Berkeley DB code
1737 * fix math functions
1741 * fixed lots of header problems (especially Linux/GNU specific)
1743 * dynamic loader preserves all registers
1745 * Roland McGrath provided support for handling of auxiliary objects in
1746 the ELF dynamic loader.
1748 * support for parallel builds is improved
1752 * GNU extensions are no longer declared by default. To enable them you
1753 must define the macro `_GNU_SOURCE' in your program or compile with
1756 * The library has changed from using GNU ld symbol aliases to using weak
1757 symbols where available. The ELF object file format supports weak
1758 symbols; GNU ld also supports weak symbols in the a.out format. (There
1759 is also now support for other GNU ld extensions in ELF. Use the
1760 `--with-elf' option to configure to indicate you have ELF, and
1761 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1762 of many files which contained only symbol aliases, reducing the size of
1763 the source and the compiled library; many other files were renamed to
1764 less cryptic names previously occupied by the symbol alias files.
1765 There is a new header file <elf.h> for programs which operate on
1766 files in the ELF format.
1768 * Converted to Autoconf version 2, so `configure' has more options.
1769 Run `configure --help' to see the details.
1771 * The library can now be configured to build profiling, highly-optimized
1772 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1773 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1774 `configure' enable building these extra libraries. The shared library is
1775 built by default when using both ELF and GNU ld. When shared libraries
1776 are enabled, the new library `-ldl' is available for arbitrary run-time
1777 loading of shared objects; its interface is defined in <dlfcn.h>. The
1778 new header file <link.h> gives access to the internals of the run-time
1779 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1780 application of same name on other systems and it provides information
1781 about dynamically linked binaries.
1783 * The C library now provides the run-time support code for profiling
1784 executables compiled with `-pg'. Programs can control the profiling code
1785 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1786 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1787 the support for this file format was contributed by David Mosberger-Tang.
1789 * The math code has been replaced with a math library based on fdlibm from
1790 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1791 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1792 functions. The math functions now reside in a separate library, so
1793 programs using them will need to use `-lm' their linking commands.
1795 * John C. Bowman contributed optimized ix87 assembler inline functions.
1797 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1798 mechanism similar to that found in Solaris 2. This is now used for the
1799 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1800 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1801 file controls what services are used for each individual database. This
1802 works by loading shared libraries with names specified in `nsswitch.conf',
1803 so service modules can be changed or added at any time without even
1804 relinking any program. Currently there are the file, db, and NIS based
1805 NSS services available.
1807 * The new functions `strtoq' and `strtouq' parse integer values from
1808 strings, like `strtol' and `strtoul', but they return `long long int' and
1809 `unsigned long long int' values, respectively (64-bit quantities).
1811 * The new functions `strtof' and `strtold' parse floating-point values from
1812 strings, like `strtod', but they return `float' and `long double' values,
1813 respectively (on some machines `double' and `long double' are the same).
1815 * Ulrich Drepper has contributed new implementations of the floating-point
1816 printing and reading code used in the `printf' family of functions and
1817 `strtod', `strtof', and `strtold'. These new functions are perfectly
1818 accurate, and much faster than the old ones.
1820 * The implementation of the POSIX locale model was completely rewritten by
1821 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1822 to compile the POSIX locale definition.
1824 * The former dummy implementations of the strcoll and strxfrm function are
1825 now replaced by fully functional code contributed by Ulrich Drepper. The
1826 collation information comes from the POSIX locale definitions.
1828 * The new header <langinfo.h> defines an interface for accessing
1829 various locale-dependent data (using the locale chosen with `setlocale').
1831 * Ulrich Drepper has contributed a new suite of functions for operation on
1832 wide-character and multibyte-character strings, in <wchar.h>;
1833 and classification and case conversion of wide characters, in <wctype.h>.
1834 These new functions are conforming to the ISO C, Amendement 1 specification.
1836 * There is now a second implementation of the standard I/O library available.
1837 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1838 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1840 * You can now use positional parameter specifications in format strings
1841 for the `printf' and `scanf' families of functions. For example,
1842 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1843 ``Number 6, Mr Jones''. This is mainly useful when providing different
1844 format strings for different languages, whose grammars may dictate
1845 different orderings of the values being printed. To support this
1846 feature, the interface for `register_printf_handler' has changed; see
1847 the header file <printf.h> for details.
1849 * The `printf' and `scanf' families of functions now understand a new
1850 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1851 to group numbers as indicated by the locale; for `scanf' and friends, this
1852 says to accept as valid only a number with all the proper grouping
1853 separators in the right places. In the default "C" locale, numbers are
1854 not grouped; but locales for specific countries will define the usual
1855 conventions (i.e. separate thousands with `,' in the US locale).
1857 * The pgrp functions have been regularized, slightly incompatibly but much
1858 less confusingly. The core functions are now `getpgid' and `setpgid',
1859 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1860 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1861 provided for compatibility. There is no longer an incompatible `getpgrp'
1862 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1864 * The new header file <fts.h> and suite of functions simplify programs that
1865 operate on directory trees. This code comes from 4.4 BSD.
1867 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1868 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1869 NSS scheme used in glibc.
1871 * There is a new malloc debugging hook `__memalign_hook'.
1873 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1874 `unsigned int' in <sys/types.h>. These are for compatibility only and
1875 their use is discouraged.
1877 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1878 done differently, so that it works even without GNU ld.
1880 * New function `euidaccess' checks allowed access to a file like `access',
1881 but using the effective IDs instead of the real IDs.
1883 * The time zone data files have been updated for the latest and greatest
1884 local time conventions of the countries of the world.
1886 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1889 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1890 for formatting floating-point numbers. They are provided only for
1891 compatibility; new programs should use `sprintf' instead. There are
1892 also equivalent function for the `long double' floating-point type and
1893 all functions also exist in a reentrant form.
1895 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1896 functions for maintaining the login-record files (primarily of use to
1897 system programs such as `login'), and convenient functions for
1898 allocating and initializing a pseudo-terminal (pty) device.
1900 * Ulrich Drepper has contributed new support for System V style
1901 shared memory and IPC on systems that support it.
1903 * Ulrich Drepper has contributed several miscellaneous new functions found
1904 in System V: The `hsearch' family of functions provide an effective
1905 implementation of hash tables; `a64l' and `l64a' provide a very simple
1906 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1909 * Ulrich Drepper has contributed new reentrant counterparts for the
1910 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1912 * Ulrich Drepper has contributed new, highly-optimized versions of several
1913 string functions for the i486/Pentium family of processors.
1915 * Ulrich Drepper has updated the Linux-specific code, based largely
1916 on work done in Hongjiu Lu's version of GNU libc for Linux.
1917 The GNU library now supports Linux versions 2.0.10 and later,
1918 using the ELF object file format (i[3456]86-*-linux).
1920 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1922 * David Mosberger-Tang and Richard Henderson have ported the C library
1923 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1924 dynamic linking support for ELF/Alpha.
1926 * Richard Henderson contributed several Alpha optimized assembler function
1927 for arithmetic and string handling.
1929 * Ulrich Drepper has contributed a new set of message catalog functions to
1930 support multiple languages using the <libintl.h> interface, for use with
1931 his new package GNU gettext. Translation volunteers have contributed
1932 catalogs of the library's messages in Spanish, German, and Korean.
1934 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1935 program and the `catgets' function for reading the catalog files it
1936 creates. (The <libintl.h> interface is preferred; we include the
1937 <nl_types.h> interface using `catgets' only for source compatibility with
1938 programs already written to use it.)
1940 * New header file <values.h> gives SVID-compatible names for <limits.h>
1943 * Various new macros, declarations, and small header files for compatibility
1946 * New function `group_member' is a convenient way to check if a process has
1947 a given effective group ID.
1949 * When using GCC 2.7 and later, the socket functions are now declared in a
1950 special way so that passing an argument of type `struct sockaddr_in *',
1951 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1952 `struct sockaddr *' type, does not generate a type-clash warning.
1954 * New function `error' declared in header file <error.h> is a convenient
1955 function for printing error messages and optionally exiting; this is the
1956 canonical function used in GNU programs. The new functions `err', `warn',
1957 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1958 doing the same thing.
1960 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1961 POSIX.2 `glob' function to do ~ and {...} expansion.
1963 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1964 `clearenv' which is used in POSIX.9 is also available.
1966 * New function `getsid' returns session ID number on systems that support it.
1968 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1969 files <db.h> and <mpool.h> provide a rich set of functions for several
1970 types of simple databases stored in memory and in files, and <ndbm.h> is
1971 an old `ndbm'-compatible interface using the `db' functions. Link with
1972 `-ldb' to get these functions.
1974 * New macro `strdupa' copies a string like `strdup', but uses local stack
1975 space from `alloca' instead of dynamic heap space from `malloc'.
1977 * New function `strnlen' is like `strlen' but searches only a given maximum
1978 number of characters for the null terminator. `stpncpy', `strndup' and
1979 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1982 * New function `statfs' in header <sys/statfs.h>.
1984 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1985 provide convenient functions for operating on blocks of null-terminated
1988 * A new suite of functions in <utmp.h> handle all the details of reading
1989 and writing the utmp file.
1991 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1994 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1995 completely POSIX compliant and also implemented the extended functionality
1996 to handle alternate digit representation and alternate era date formats.
1998 * Ulrich Drepper provided an implementation of the `strptime' function
1999 defined in XPG4.2 which transforms a string into a `struct tm' value.
2001 * Paul Eggert provided the tzselect shell script as part of the timezone
2002 code. The shell script makes it easy to select the correct timezone
2005 * The implementation of the malloc family of functions is completely replaced
2006 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2007 The implementation uses the mmap function (if available) and it is
2008 optimized for the use in multi threaded programs.
2010 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2011 functions. This new functionality is usable by specifying a special
2012 salt string and it is compatible with implementation on *BSD systems.
2014 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2015 `getsubopt' to handle second level command line options, `bsd_signal'
2016 to access BSD style `signal' functionality, the obsolete `regexp' style
2019 * the `lchown' function is available on system which support this
2022 * The implementation of the shadow password handling function was contributed
2025 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2027 * POSIX.1g support was added. The <sys/select.h> header is available,
2028 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2029 implementation of `getaddrinfo'.
2033 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2035 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2036 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2038 * The new function `daemon' from 4.4 BSD is useful for server programs that
2039 want to put themselves in the background.
2041 * Joel Sherrill has contributed support for several standalone boards that
2042 run without an operating system.
2044 * `printf', `scanf' and friends now accept a `q' type modifier for long
2045 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2047 * All of the code taken from BSD (notably most of the math and networking
2048 routines) has been updated from the BSD 4.4-Lite release.
2050 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2052 * The new functions `getdomainname' and `setdomainname' fetch or change the
2053 YP/NIS domain name. These are system calls which exist on systems which
2056 * The time zone data files have been updated for the latest international
2059 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2060 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2064 * The C library now includes support for Sun RPC, from Sun's free
2065 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2066 are included. (There is still no support for YP.)
2068 * Tom Quinn has contributed a port of the C library to SGI machines running
2069 Irix 4 (mips-sgi-irix4).
2071 * The new `lockf' function is a simplified interface to the locking
2072 facilities of `fcntl', included for compatibility.
2074 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2076 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2078 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2081 * The error message printed by `assert' for a failed assertion now includes
2082 the name of the program (if using GNU ld) and the name of the calling
2083 function (with versions of GCC that support this).
2085 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2087 * The library now includes the <sys/mman.h> header file and memory
2088 management functions `mmap', `munmap', `mprotect', `msync', and
2089 `madvise', on systems that support those facilities.
2091 * The interface for `mcheck' has changed slightly: the function called to
2092 abort the program when an allocation inconsistency is detected now takes
2093 an argument that indicates the type of failure. The new function
2094 `mprobe' lets you request a consistency check for a particular block at
2095 any time (checks are normally done only when you call `free' or `realloc'
2098 * It is now possible to easily cross-compile the C library, building on one
2099 system a library to run on another machine and/or operating system. All
2100 you need to do is set the variable `HOST_CC' in `configparms' to the
2101 native compiler for programs to run on the machine you are building on (a
2102 few generator programs are used on Unix systems); set `CC' to the
2105 * The new function `fexecve' (only implemented on the GNU system) executes
2106 a program file given a file descriptor already open on the file.
2110 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2111 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2113 * You can set the variable `libprefix' in `configparms' to specify a prefix
2114 to be prepended to installed library files; this makes it easy to install
2115 the GNU C library to be linked as `-lgnuc' or whatever.
2117 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2118 copies a limited number of characters from a string, and returns the
2119 address of the last character written.
2121 * You no longer need to check for whether the installed `stddef.h' is
2122 compatible with the GNU C library. configure now checks for you.
2124 * You can now define a per-stream `fileno' function to convert the
2125 stream's cookie into an integral file descriptor.
2127 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2128 allocates zero bytes of storage, and returns a unique pointer which
2129 you can pass to `realloc' or `free'. The behavior is undefined if
2130 you dereference this pointer.
2132 * The C library now runs on Sony NEWS m68k machines running either
2133 NewsOS 3 or NewsOS 4.
2135 * The new `syscall' function is a system-dependent primitive function
2136 for invoking system calls. It has the canonical behavior on Unix
2137 systems, including unreliable return values for some calls (such as
2138 `pipe', `fork' and `getppid').
2140 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2141 to `EAGAIN', which is the preferred name. On systems whose kernels
2142 use two distinct codes, the C library now translates EWOULDBLOCK to
2143 EAGAIN in every system call function.
2147 * The GNU C Library Reference Manual is now distributed with the library.
2148 `make dvi' will produce a DVI file of the printed manual.
2149 `make info' will produce Info files that you can read on line using C-h i
2150 in Emacs or the `info' program.
2151 Please send comments on the manual to bug-glibc-manual@gnu.org.
2153 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2155 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2157 * Jason Merrill has contributed a port to the Sequent Symmetry running
2158 Dynix version 3 (i386-sequent-dynix).
2160 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2161 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2163 * New function `memory_warnings' lets you arrange to get warnings when
2164 malloc is running out of memory to allocate, like Emacs gives you.
2166 * The C library now contains the relocating allocator used in Emacs 19 for
2167 its editing buffers. This allocator (ralloc) minimizes allocation
2168 overhead and fragmentation by moving allocated regions around whenever it
2169 needs to. You always refer to a ralloc'd region with a "handle" (a
2170 pointer to a pointer--an object of type `void **').
2172 * There is a new `printf' format: `%m' gives you the string corresponding
2173 to the error code in `errno'.
2175 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2176 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2177 pass, the `a' modifier says to fill in a `char **' you pass with a
2180 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2181 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2182 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2184 * `mkstemp' is a traditional Unix function to atomically create and open a
2185 uniquely-named temporary file.
2189 * The standard location for the file that says what the local timezone is
2190 has changed again. It is now `/usr/local/etc/localtime' (or more
2191 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2193 * The distribution no longer contains any files with names longer than 14
2196 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2197 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2199 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2203 * The configuration process has changed quite a bit. The `configure'
2204 script is now used just like the configuration scripts for other GNU
2205 packages. The `sysdeps' directory hierarchy is much rearranged.
2206 The file `INSTALL' explains the new scheme in detail.
2208 * The header files no longer need to be processed into ANSI C and
2209 traditional C versions. There is just one set of files to install, and
2210 it will work with ANSI or old C compilers (including `gcc -traditional').
2212 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2213 MIPS DECStation running Ultrix 4.
2215 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2216 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2217 made itself into a shared library.
2219 * Yet further improved support for the i386, running 4.3 BSD-like systems
2220 (such as Mach 3 with the Unix single-server), or System V.
2222 * New function `strncasecmp' to do case-insensitive string comparison
2223 with limited length.
2225 * New function `strsep' is a reentrant alternative to `strtok'.
2227 * New functions `scandir' and `alphasort' for searching directories.
2229 * New function `setenv' is a better interface to `putenv'.
2231 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2232 function for traversing a directory tree.
2234 * The GNU obstack package is now also part of the C library.
2235 The new function `open_obstack_stream' creates a stdio stream that
2236 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2237 formatted output directly to an obstack.
2239 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2240 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2242 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2244 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2245 things to your strings.
2247 * There are some new test programs: test-fseek, testmb, and testrand.
2249 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2250 These ports are not finished, but are a good starting place for really
2251 supporting those systems.
2253 * `/etc/localtime' is now the standard location for the file that says what
2254 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2255 This follows the general principle that `/etc' is the place for all local
2256 configuration files.
2258 * The C library header files now use `extern "C"' when used by the C++
2259 compiler, so the C library should now work with C++ code.
2261 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2262 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2265 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2266 function which uses the `merge sort' algorithm, and is said to be
2267 significantly faster than the old GNU `qsort' function. Merge sort is
2268 now the standard `qsort' function. The new algorithm can require a lot
2269 of temporary storage; so, the old sorting function is called when the
2270 required storage is not available.
2272 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2273 provides the Unix `crypt' function, plus some other entry points.
2275 * The code and header files taken from 4.4 BSD have been updated with the
2276 latest files released from Berkeley.
2278 ----------------------------------------------------------------------
2279 Copyright information:
2281 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2283 Permission is granted to anyone to make or distribute verbatim copies
2284 of this document as received, in any medium, provided that the
2285 copyright notice and this permission notice are preserved,
2286 thus giving the recipient permission to redistribute in turn.
2288 Permission is granted to distribute modified versions
2289 of this document, or of portions of it,
2290 under the above conditions, provided also that they
2291 carry prominent notices stating who last changed them.
2294 version-control: never
projects / platform / upstream / glibc.git / blob