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 14155, 14699, 15427, 15522, 15531, 15532, 15736, 15749, 15797, 15844,
13 15867, 15886, 15887, 15890, 15892, 15893, 15895, 15897, 15905, 15909,
16 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
17 to the d_name member of struct dirent, or omit the terminating NUL
18 character. (Bugzilla #14699).
20 * New locales: quz_PE.
22 * Add country_car field to LC_ADDRESS, many locales.
24 * Update iso-1427.def and related occurrences.
26 * The configure option --disable-versioning has been removed. Builds with
27 --disable-versioning had not worked for several years.
32 * The following bugs are resolved with this release:
34 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
35 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
36 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
37 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
38 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
39 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
40 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
41 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
42 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
43 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
44 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
45 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
46 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
49 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
50 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
51 Distributions can re-enable building and using pt_chown via the new configure
52 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
53 considerable security risks and should only be used if the distribution
54 understands and accepts the risks.
56 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
59 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
60 fixed (Bugzilla #15330).
62 * Add support for calling C++11 thread_local object destructors on thread
63 and program exit. This needs compiler support for offloading C++11
64 destructor calls to glibc.
66 * Improved worst case performance of libm functions with double inputs and
69 * Support for priority inherited mutexes in pthread condition variables on
70 non-x86 architectures.
72 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
74 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
76 * Optimized string functions for ARM. Implemented by Will Newton and
79 * Optimized libm functions for SPARC. Implemented by David S. Miller.
81 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
84 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
85 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
87 * Added a benchmark framework to track performance of functions in glibc.
89 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
90 It is based on draft TS 18661 and currently enabled as a GNU extension.
92 * On Linux, the clock function now uses the clock_gettime system call
93 for improved precision, rather than old times system call.
95 * Added new API functions pthread_getattr_default_np and
96 pthread_setattr_default_np to get and set the default pthread
97 attributes of a process.
99 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
100 This may improve lock scaling of existing programs on TSX capable systems.
101 When the --enable-lock-elision=yes parameter is specified at configure
102 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
105 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
106 availability). Implemented by Ryan S. Arnold.
108 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
112 * The following bugs are resolved with this release:
114 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
115 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
116 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
117 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
118 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
119 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
120 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
121 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
122 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
123 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
124 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
125 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
126 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
127 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
128 14879, 14889, 14893, 14898, 14914.
130 * Optimization of memcpy for MIPS.
132 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
133 EMFILE has been fixed (Bugzilla #14889).
135 * The add-on ports collection is now distributed in the "ports" subdirectory
136 of the main GNU C Library distribution, rather than separately.
138 * Port to ARM AArch64 contributed by Linaro.
140 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
141 Optimized versions of memcpy, memset, and memcmp added for System z10 and
143 Implemented by Andreas Krebbel.
145 * The new function secure_getenv allows secure access to the environment,
146 returning NULL if running in a SUID/SGID process. This function replaces
147 the internal function __secure_getenv.
149 * SystemTap static probes have been added into the dynamic linker.
150 Implemented by Gary Benson.
152 * Optimizations of string functions strstr, strcasestr and memmem.
153 Implemented by Maxim Kuvyrkov.
155 * The minimum Linux kernel version that this version of the GNU C Library
156 can be used with is 2.6.16.
158 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
159 powerpc POWER7. Implemented by Will Schmidt.
161 * New configure option --disable-nscd builds the C library such that it
162 never attempts to contact the Name Service Caching Daemon (nscd).
163 New configure option --disable-build-nscd avoids building nscd itself;
164 this is the default if --disable-nscd is used.
166 * Improved support for cross-compilation, including cross-testing and
167 bootstrap builds without a previously built glibc.
169 * Several testsuite tests are now able to test multiple IFUNC variants of an
170 interface, rather than just testing the one that would be chooen by
173 * New configure options --with-bugurl and --with-pkgversion, for
174 distributors to use to embed their bug-reporting and package version
175 information in --help and --version output.
177 * The ttyname and ttyname_r functions on Linux now fall back to searching for
178 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
179 allows creation of chroots without the procfs mounted on /proc.
181 * The `crypt' function now fails if passed salt bytes that violate the
182 specification for those values. On Linux, the `crypt' function will
183 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
184 enabled, and fail on encrypted strings using the MD5 or DES algorithm
185 when the mode is enabled.
187 * The `clock_*' suite of functions (declared in <time.h>) is now available
188 directly in the main C library. Previously it was necessary to link with
189 -lrt to use these functions. This change has the effect that a
190 single-threaded program that uses a function such as `clock_gettime' (and
191 is not linked with -lrt) will no longer implicitly load the pthreads
192 library at runtime and so will not suffer the overheads associated with
193 multi-thread support in other code such as the C++ runtime library.
195 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
200 * The following bugs are resolved with this release:
202 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
203 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
204 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
205 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
206 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
207 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
208 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
209 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
210 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
211 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
212 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
213 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
214 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
215 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
216 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
217 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
218 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
219 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
220 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
221 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
222 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
223 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
226 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
227 configuring glibc with:
228 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
229 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
230 Implemented by H.J. Lu.
234 + define static_assert
236 + do not declare gets
238 + declare at_quick_exit and quick_exit also for ISO C11
240 + aligned_alloc. NB: The code is deliberately allows the size parameter
241 to not be a multiple of the alignment. This is a moronic requirement
242 in the standard but it is only a requirement on the caller, not the
247 + uchar.h support added
249 + CMPLX, CMPLXF, CMPLXL added
251 Implemented by Ulrich Drepper.
253 * Support for the IA-64 has been moved to ports.
255 * Remove support for anything but ELF binary format
257 * Checking versions of poll, ppoll added.
258 Implemented by Ulrich Drepper.
260 * More generic and 64-bit performance optimizations to math functions.
261 Implemented by Ulrich Drepper.
263 * New configure option --enable-obsolete-rpc makes the deprecated RPC
264 headers and functions available at compile time as they were before
265 version 2.14. This option will be removed at some time in the future
266 after the TI-RPC library becomes fully sufficient for the needs of
267 existing applications.
269 * Compatibility code for Linux kernel versions before 2.4 has been removed.
270 Note that glibc is not expected to work with any Linux kernel version
273 * New header <sys/auxv.h> and function getauxval allowing easy access to
274 the AT_* key-value pairs passed from the Linux kernel. The header also
275 defines the HWCAP_* bits associated with the AT_HWCAP key.
277 * New locales: mag_IN
279 * New configure option --enable-systemtap builds SystemTap static probes
280 into libc for setjmp and longjmp and into libpthread for various operations.
281 So far the setjmp/longjmp probes and some of the libpthread probes are
282 provided only for i*86 and x86_64.
283 Implemented by Roland McGrath and Rayson Ho.
285 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
287 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
290 * More optimized functions for SPARC. Implemented by David S. Miller.
292 * Improved support for cross-compilation, especially bootstrap builds
293 without a previously built glibc.
295 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
296 Chris Metcalf from Tilera.
298 * Support for the old ARM ABI has been removed from ports. Only the EABI is
299 now supported for ARM processors.
301 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
302 as the name of the dynamic linker, to distinguish it from the
303 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
305 * Support for CRIS has been removed from ports.
307 * A new class of installed header has been documented for low-level
308 platform-specific functionality. PowerPC added the first instance with a
309 function to provide time base register access. Contributed by Tulio
310 Magno Quites Machado Filho.
312 * ix86 configurations now install header files that are consistent with
313 what x86-64 configurations install. These same header files can be used
314 for -m32, -m64, or -mx32 builds.
315 Contributed by H.J. Lu.
317 * Math library bug fixes. A thorough audit of all open math library bugs was
318 conducted by Joseph Myers. Significant progress was made on many math
319 library bugs resulting in more accurate exceptions and function results.
320 Many thanks to all those that contributed including Andreas Jaeger for his
321 patch review and work on the x87 trigonometric instruction issues.
323 * Timezone data is no longer installed. Timezone-related binaries and scripts
324 will continue to be installed. Users should obtain their timezone data from
325 their distribution provider or from the tzdata package at
326 <ftp://munnari.oz.au/pub/>.
330 * The following bugs are resolved with this release:
332 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
333 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
334 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
335 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
336 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
337 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
338 13484, 13506, 13515, 13523, 13524, 13538, 13540
340 * New program pldd to list loaded object of a process
341 Implemented by Ulrich Drepper.
343 * Add nss_db support back to glibc. No more dependency on Berkeley db
344 and support for initgroups lookups.
345 Implemented by Ulrich Drepper.
347 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
348 Contributed by HJ Lu.
350 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
351 Contributed by HJ Lu.
353 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
354 on x86-32 and x86-64.
355 Contributed by Liubov Dmitrieva.
357 * Optimized strchr and strrchr for SSE on x86-32.
358 Contributed by Liubov Dmitrieva.
360 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
361 for x86-64 and x86-32.
362 Contributed by Liubov Dmitrieva.
364 * New interfaces: scandirat, scandirat64
365 Implemented by Ulrich Drepper.
367 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
368 Implemented by Ulrich Drepper.
370 * nscd now also caches the netgroup database.
371 Implemented by Ulrich Drepper.
373 * Integrate libm with gcc's -ffinite-math-only option.
374 Implemented by Ulrich Drepper.
376 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
377 to math functions. Implemented by Ulrich Drepper.
379 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
380 Implemented by Ulrich Drepper.
382 * New Linux interfaces: process_vm_readv, process_vm_writev
384 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
385 Implemented by Ulrich Drepper.
387 * Optimized nearbyint and strcasecmp for PPC.
388 Implemented by Adhemerval Zanella.
390 * New locales: bho_IN, unm_US, es_CU, ta_LK
394 * The following bugs are resolved with this release:
396 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
397 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
398 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
399 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
400 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
401 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
402 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
403 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
404 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
405 12795, 12811, 12813, 12814, 12841
407 * The RPC implementation in libc is obsoleted. Old programs keep working
408 but new programs cannot be linked with the routines in libc anymore.
409 Programs in need of RPC functionality must be linked against TI-RPC.
410 The TI-RPC implementation is IPv6 enabled and there are other benefits.
412 Visible changes of this change include (obviously) the inability to link
413 programs using RPC functions without referencing the TI-RPC library and the
414 removal of the RPC headers from the glibc headers.
415 Implemented by Ulrich Drepper.
417 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
418 syncfs, setns, sendmmsg
420 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
421 yue_HK, lij_IT, mhr_RU
423 * New encodings: CP770, CP771, CP772, CP773, CP774
425 * New program sotruss to trace calls through PLTs
426 Implemented by Ulrich Drepper.
428 * The malloc hook implementation is marked deprecated and will be removed
429 from the default implementation in the next version. The design never
430 worked ever since the introduction of threads. Even programs which do
431 not create threads themselves can use multiple threads created internally.
435 * The following bugs are resolved with this release:
437 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
438 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
439 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
440 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
443 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
445 * POWER7 optimizations: memset, memcmp, strncmp
447 * New optimized string functions for x86-64: strnlen (SSE2),
448 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
449 Implemented by Ulrich Drepper.
453 * The following bugs are resolved with this release:
455 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
456 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
457 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
458 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
459 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
460 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
461 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
462 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
464 * New interfaces: pthread_getname_np, pthread_setname_np
466 * New Linux interface: recvmmsg
468 * STT_GNU_IFUNC implemented for Sparc by David Miller.
470 * The dynamic linker now recognizes supported ABI versions from the
471 EI_ABIVERSION field in the ELF header.
472 Implemented by Ulrich Drepper.
474 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
475 will not be used to fill in password fields in the passwd.byname replies.
476 Instead it is used to synthesize the shadow.byname table, should it be
477 missing. This is a useful mode in some installations involving Solaris.
478 Implemented by Ulrich Drepper.
480 * New locales: kok_IN, sq_MK, cv_RU
484 * The following bugs are resolved with this release:
486 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
487 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
488 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
489 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
490 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
491 10789, 10817, 10823, 10840, 10847
493 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
495 Implemented by Ulrich Drepper.
497 * Checking version of longjmp added that fails if an uninitialized stack
498 frame would be created. Implemented by Ulrich Drepper.
500 * STT_GNU_IFUNC is now supported in static executables.
501 Implemented by H.J. Lu.
503 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
505 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
506 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
507 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
508 Contributed by H.J. Lu.
510 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
511 Implemented by Ulrich Drepper.
513 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
515 Contributed by H.J. Lu.
517 * Support for fma instruction in AVX on x86-64.
518 Implemented by H.J. Lu and Ulrich Drepper.
520 * AVX support in x86-64 auditing support in ld.so.
521 Implemented by H.J. Lu.
523 * STB_GNU_UNIQUE support added.
524 Implemented by Ulrich Drepper.
526 * Implement second fallback mode for optimized DNS lookup for even more
527 broken environments. If two requests from the same port are not
528 handled correctly close the socket and open a new one before sending
529 the second request. The 'single-request-reopen' option in /etc/resolv.conf
530 can be used to select this mode right away, instead of rediscovering the
531 necessity is every process again.
532 Implemented by Ulrich Drepper.
534 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
535 Implemented by Adam Tkac.
537 * Optimized iconv conversions for S390x.
538 Implemented by Andreas Krebbel.
540 * Using condvars with PI mutexes is now more efficient due to kernel
541 support for requeueing to PI futexes. NPTL support added for x86-64.
542 Implemented by Ulrich Drepper.
544 * New locales: ps_AF, my_MM
548 * The following bugs are resolved with this release:
550 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
551 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
552 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
553 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
554 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
556 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
557 Implemented by Ulrich Drepper.
559 * New Linux interfaces: accept4, fallocate, fallocate64.
560 Implemented by Ulrich Drepper.
562 * Correct declarations of string function when used in C++ code. This
563 could lead to compile errors for invalid C++ code.
565 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
568 * New POSIX 2008 interface: psiginfo
569 Implemented by Ulrich Drepper.
571 * New ISO C++1x interfaces: quick_exit, at_quick_exit
572 Implemented by Ulrich Drepper.
574 * Support for selecting between multiple function definitions at runtime
575 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
577 * The libcrypt library can now use the hash function implementations in
578 NSS. Implemented by Ulrich Drepper.
580 * The malloc implementation can be compiled to be less memory efficient
581 but higher performing in multi-threaded programs.
582 Implemented by Ulrich Drepper.
584 * New locales: nan_TW@latin, ks_IN
586 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
587 Implemented by Ulrich Drepper.
589 * Extended printf hook support. It is possible to use user-defined types
590 and extend existing format specifiers.
591 Implemented by Ulrich Drepper.
593 * Handling for group shadow files has been added.
594 Implemented by Ulrich Drepper.
596 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
597 servers (the case, e.g., for some people using the built-in DNS
598 server in ADSL modems/routers). There is a once-per-process timeout
599 in case of a broken server. To avoid it, users can run nscd or put
600 'options single-request' in /etc/resolv.conf.
601 Implemented by Ulrich Drepper.
605 * The following bugs are resolved with this release:
607 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
608 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
609 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
610 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
611 6968, 6974, 6980, 6995, 7008, 7009, 7029
613 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
614 up at the same time. Implemented by Ulrich Drepper.
616 * TLS descriptors for LD and GD on x86 and x86-64.
617 Implemented by Alexandre Oliva.
619 * getaddrinfo now handles DCCP and UDPlite.
620 Implemented by Ulrich Drepper.
622 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
623 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
624 Implemented by Ulrich Drepper.
626 * New implementation of memmem, strstr, and strcasestr which is O(n).
627 Implemented by Eric Blake.
629 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
631 * Implement "e" option for popen to open file descriptor with the
632 close-on-exec flag set. Implemented by Ulrich Drepper.
634 * Implement "b" mode for fmemopen. In this mode writes writes don't
635 implicitly add a NUL byte and seeks from the end of the buffer really
636 use the buffer end, not the string length as the basis.
637 Implemented by Ulrich Drepper.
639 * Many functions, exported and internal, now atomically set the close-on-exec
640 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
642 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
644 Implemented by Pravin Satpute.
646 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
650 * The following bugs are resolved with this release:
652 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
653 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
654 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
655 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
656 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
657 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
658 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
660 * New locales: bo_CN, bo_IN, shs_CA.
662 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
664 * Sorting rules for some Indian languages (Devanagari and Gujarati).
665 Implemented by Pravin Satpute.
667 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
669 * nscd caches now all timeouts for DNS entries
670 Implemented by Ulrich Drepper.
672 * nscd is more efficient and wakes up less often.
673 Implemented by Ulrich Drepper.
675 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
676 vdprintf, and obstack_vprintf.
677 Implemented by Jakub Jelinek.
679 * Faster memset for x86-64.
680 Implemented by Harsha Jagasia and H.J. Lu.
682 * Faster memcpy on x86.
683 Implemented by Ulrich Drepper.
685 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
686 Implemented by Ulrich Drepper.
688 * Faster sqrt and sqrtf implemention for some PPC variants.
689 Implemented by Steven Munroe.
693 * The following bugs are resolved with this release:
695 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
696 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
697 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
698 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
699 5071, 5103, 5104, 5112, 5113, 5184, 5186
701 * More checking functions: fread, fread_unlocked, open*, mq_open.
702 Implemented by Jakub Jelinek and Ulrich Drepper.
704 * Extend fortification to C++. Implemented by Jakub Jelinek.
706 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
707 by not recognizing 'a' as a modifier when those specs are requested.
708 Implemented by Jakub Jelinek.
710 * PPC optimizations to math and string functions.
711 Implemented by Steven Munroe.
713 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
714 options to be passed. Implemented by Ulrich Drepper.
716 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
718 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
719 Implemented by Ulrich Drepper.
721 * Handle private futexes in the NPTL implementation.
722 Implemented by Jakub Jelinek and Ulrich Drepper.
724 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
725 Implemented by Roland McGrath and Ulrich Drepper.
727 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
729 * SHA-256 and SHA-512 based password encryption.
730 Implemented by Ulrich Drepper.
732 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
733 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
736 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
737 Implemented by Ulrich Drepper.
741 * The following bugs are resolved with this release:
743 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
744 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
745 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
746 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
747 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
748 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
749 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
752 * New Linux interfaces: epoll_pwait, sched_getcpu.
754 * New generic interfaces: strerror_l.
756 * nscd can now cache the services database. Implemented by Ulrich Drepper.
760 * The following bugs are resolved with this release:
762 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
763 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
764 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
765 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
766 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
767 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
768 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
769 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
770 3225, 3251, 3252, 3253, 3273
772 * For Linux, the sorting of addresses returned by getaddrinfo now also
773 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
774 Implemented by Ulrich Drepper.
776 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
777 Implemented by Ulrich Drepper.
779 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
781 * New iconv module for MIK. Contributed by Alexander Shopov.
783 * For sites with broken group and/or passwd database, the auto-propagate
784 option of nscd can prevent creating ID lookup entries from the results
785 of a name lookup and vice versa. This usually is no problem but some
786 site might have problems with the default behavior.
787 Implemented by Ulrich Drepper.
789 * Iterating over entire database in NIS can be slow. With the
790 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
791 to trade time for memory. The entire database will be read at once.
792 Implemented by Ulrich Drepper.
794 * The interfaces introduced in RFC 3542 have been implemented by
797 * Support for the new ELF hash table format was added by Ulrich Drepper.
799 * Support for priority inheritance mutexes added by Jakub Jelinek and
802 * Support for priority protected mutexes added by Jakub Jelinek.
804 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
805 or_IN, csb_PL, fy_NL, sr_ME.
809 * More overflow detection functions.
811 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
812 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
814 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
815 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
816 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
817 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
818 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
819 by Masahide Washizawa.
821 * It is now possible to install audit libraries for the dynamic linker using
822 LD_AUDIT. Implemented by Ulrich Drepper.
824 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
825 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
826 For a libc and libpthread that works well on Linux 2.4 kernels, we
827 recommend using the stable 2.3 branch.
829 * The new function open_wmemstream acts like open_memstream,
830 but uses a wchar_t wide character buffer.
832 * The new function ppoll is an improved version of poll, similar to pselect.
834 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
835 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
836 renameat, unlinkat, linkat, symlinkat, readlinkat.
838 * New Linux kernel system calls: unshare,
839 inotify_init, inotify_add_watch, inotify_rm_watch.
841 * The euidaccess function is now also known by the alias eaccess,
842 for compatibility with some other systems.
844 * Timezone data updated to 2006b version.
848 * The following bugs are resolved with this release:
850 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
851 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
852 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
853 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
854 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
855 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
857 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
859 * As of this release, GCC 4 can be used to compile the C Library.
861 * Timezone data updated to 2005m version.
865 * The following bugs are resolved with this release:
867 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
868 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
869 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
870 777, 787, 821, 822, 823, 825
872 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
876 * Support for RFC 3678. Real implementations exist only for Linux so far.
877 Implemented by Ulrich Drepper.
879 * nscd can now cache entries persistently. Expiring entries are reloaded.
880 For speedups the cache can be shared in memory with client processes.
881 Implemented by Ulrich Drepper.
883 * nscd can now perform SELinux checks.
884 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
886 * getaddrinfo queries are now cached. Canonical name lookup is performed
888 Implemented by Ulrich Drepper.
890 * The nothrow function attribute is used when headers are used by gcc when
891 compiling C code. This can avoid significant amounts of exception
894 * The malloc functions perform more error checking and are stricter when
895 it comes to reacting on errors. The default action is to terminate
896 the process after showing an error message. Implemented by Ulrich Drepper.
898 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
899 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
901 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
902 namespaces using the new function dlmopen(). This feature is of course,
903 like most other dynamic loading functionality, not available in statically
904 linked applications. Implemented by Ulrich Drepper.
906 * Low-overhead boundary checking variants of string and some stdio functions
907 were added. These are to be used in conjunction with a gcc patch by
908 Jakub Jelinek which adds calls to these functions if possible.
909 Implemented by Jakub Jelinek and Ulrich Drepper.
911 * Old code for several operating systems and machine architectures that
912 have not been in working condition in a long time have been removed from
913 the main source tree maintained by the GNU C Library's maintainers.
914 These files are now reside in the separate `ports' source module
915 that is usable as an add-on when building the library.
919 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
920 interrogate the dynamic linker, compatible with the Solaris interface.
922 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
923 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
925 * getifaddrs now uses the netlink interface on Linux to get its information.
926 Implemented by Thorsten Kukuk.
928 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
929 Implemented by Ulrich Drepper.
931 * support for non-executable stacks on x86 has been added. Changes mostly
934 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
937 * getaddrinfo now performs destination address selection according to
942 * Thread-safe interfaces for many functions that access locale data
943 were added in version 2.3, but these features were omitted from NEWS.
944 Many functions have variants with an `_l' suffix that take a `locale_t'
945 object as a parameter rather than consulting the current locale.
946 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
947 create and maintain `locale_t' objects. Additionally, the new function
948 `uselocale' sets "the current locale" (as used by functions not so
949 parameterized) set for an individual thread. These features were added
950 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
952 * The functions getresuid, getresgid, setresuid, and setresgid, which
953 have long been available on Linux, are now declared in <unistd.h>
954 and are now also available on the Hurd.
956 * ELF thread-local storage support (TLS) now works on x86-64.
958 * The new dynamic string token $LIB is expanded in shared library names.
959 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
961 * Aldy Hernandez contributed complete software floating point support for
962 PowerPC machines with no FPU.
964 * fexecve is implemented on Linux.
966 * The `btowc' function should work at least twice as fast due to
967 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
969 * With approriate thread add-ons cancelable functions are now implemented
970 in libc.so as well. No need to call the function in libpthread. This
971 change allowed to finally disable the incorrect and expensive handling
972 of weak definition in ld.so.
974 * Yet more PLT entries in libc.so have been removed. We finally arrived
975 at the bare minimum. Startup times improved appropriately.
977 * Support for the new Linux/x86 system call interface was added. The
978 AT_SYSINFO auxiliary vector entry is recognized and handled.
982 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
985 * iconv (the program and the interface) now accepts empty names (excluding
986 options like //TRANSLIT) to mean "use charset of current locale".
988 * localedef can now transliterate characters in strings which are not in
989 the provided charmap. The information from the input locale is used.
991 * Prelinking support was added for ELF targets. This requires additional
992 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
994 * Read-only stdio streams now use mmap to speed up operation by eliminating
995 copying and buffer underflows. To use add 'm' to the mode string of
996 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
998 * The malloc functions were completely rewritten by Wolfram Gloger based
999 on Doug Lea's malloc-2.7.0.c.
1001 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1002 implementation of regex.
1004 * Bruno Haible upgraded the iconv and locale implementation to support
1007 * Contents of the LC_* and LANG environment variables in the CEN style are
1008 not recognized anymore. It never was used. Change by Ulrich Drepper.
1010 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1011 thread-local storage (TLS) ABI on some platforms.
1012 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1014 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1015 EUC-JISX0213, and TSCII.
1017 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1018 BSD-compatible interface for getting all network interface addresses.
1019 Implementation for IPv4 by Roland McGrath.
1021 * Loading of locale data is faster due to the introduction of a locale
1022 archive. Implemented by Roland McGrath and Ulrich Drepper.
1024 * Startup times are significantly reduced by not using exported functions
1025 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1028 * Steven Munroe contributed a port to PowerPC64/Linux.
1032 * The Hurd now uses the GNU libio implementation of stdio rather than the
1033 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1035 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1036 with the same behavior as the Linux system call of the same name.
1040 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1041 128-bit long double format.
1043 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1044 IBM1161, and IBM1162 charsets.
1046 * Andreas Jaeger contributed a port to x86-64/Linux.
1048 * Peter Bruin contributed a port to PowerPC/Hurd.
1050 * libc functions using I/O streams now can handle wide-oriented streams
1053 * optimizations in the dynamic linker. Binaries created by recent binutils
1054 versions start up quicker due to reduced time spent on relocations.
1056 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1060 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1061 asinh, atanh, j0 for the 128-bit long double format.
1063 * Bruno Haible updated all the code handling Unicode in some form to
1064 support Unicode 3.1.
1066 * Speed of regex for single-byte locales is back to previous levels.
1067 Patch by Isamu Hasegawa.
1069 * Alpha, SPARC, and IA-64 now also using floating stacks.
1071 * Startup time of internationalized applications greatly improved through
1072 iconv cache. Use iconvconfig to generate the cache file.
1073 Contributed by Ulrich Drepper.
1075 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1076 severe performance problems. Patch by David Mosberger.
1078 * The Hurd port got a lot more functionality like AIO, various stdio
1079 extensions, etc. Mainly done by Roland McGrath.
1081 * mtrace can now lookup symbols in shared libraries.
1085 * Intel's IA-64 math library is largely integrated. It provides fast and
1086 accurate implementatations for most basic and standard math functions
1087 in float, double, and long double format.
1089 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1090 and asin for the 96-bit long double format and asin, log, tan for the
1091 128-bit long double format.
1093 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1094 The basic double functions exist today. Contributed by Abraham Ziv
1095 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1096 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1098 * An asynchronous name lookup library was added. The interface is designed
1099 after POSIX AIO. The proposal was circulated beforehand to get comments.
1100 No negative ones came in. Implemented by Ulrich Drepper.
1102 * Port to S390/64bit contributed by Martin Schwidefsky
1103 <schwidefsky@de.ibm.com>.
1105 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1106 of functions for Linux/IA-64.
1108 * The RPC code is now thread safe. Threads can now use the same service
1109 of different services at the same time. Patch by Eric Norum
1110 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1112 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1113 family of functions for Linux/S390.
1115 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1116 of functions for Linux/x86.
1118 * Port to Linux/CRIS contributed by Axis Communications.
1122 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1123 we can now check for namespace violations and missing declarations. The
1124 result is that almost all headers are now Unix-compliant (as defined in
1125 the upcoming XPG6). The negative side is that some programs might need
1126 corrections, too, if they depend on the incorrect form of the headers in
1127 previous versions which defined too many symbols and included too many
1130 * regex now handles multibyte character sets correctly.
1131 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1133 * iconv (the program) does now conform to the upcoming XPG6 and handles
1134 charmaps. Instead of the charset names the path of charmaps can be
1135 provided and the conversion happens based on this data.
1136 Contributed by Ulrich Drepper.
1138 * The locale program now provides detailed information about the installed
1143 only lists the names of the supported locales
1147 provides details such as country, language, and codeset name.
1148 Contributed by Ulrich Drepper.
1152 * The gencat program now parses the input file according to the charset
1153 selected by the LC_CTYPE category. This is important for stateful
1154 character sets. To make generating catalogs easier there is a way
1155 to overwrite the charset selected by the locale: before the first
1156 message or $ quote line the catalog can contain a line like
1158 $ codeset=ISO-8859-2
1160 to select the charset (ISO-8859-2 in this case).
1162 Implemented by Shinya Hanataka and Ulrich Drepper.
1164 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1165 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1166 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1168 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1169 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1171 * The LANGUAGE environment variable is now ignored unless the locale is
1172 changed from the default "C" locale.
1174 * The usual bug fixes.
1178 * Greg McGary added runtime support for bounds checking using gcc's
1179 new -fbounded-pointers option. ix86 target is complete. PowerPC
1182 * Thorsten Kukuk added secure mode support to nscd.
1184 * The Berkeley db libraries have been removed.
1186 Related, the nss_db module is now in a separate package since it
1187 obviously requires a database library being available.
1189 * Wide character I/O streams implemented by Ulrich Drepper.
1191 * Functions from the extended socket API added by Ulrich Drepper.
1193 * Functions feenableexcept and fedisableexcept to control the
1194 behaviour of individual exceptions have been added by Andreas Jaeger.
1196 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1198 * The resolver code has been updated from bind 8.2.3-T5B which supports
1199 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1202 This change could in some situations effect backward compatibility. Since
1203 now `_res' is a thread-local instead of a global variable, modifying it
1204 in one thread does not have any effect in other threads.
1206 The resolver library was also extended to allow IPv6 as the transport
1207 protocol for the requests. This work was done by Stig Venaas.
1209 * Compatibility code for K&R C compilers has been removed from the
1210 header files. A ISO C compiler is needed to use the library
1211 (conforming to either C89 or C99 standard).
1213 * Complete rewrite of the localedef program to support multibyte character
1214 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1215 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1216 Implemented by Ulrich Drepper.
1218 Bruno Haible significantly improved the generation and use of the data
1219 structures for the wide character tables.
1221 * Plural handling in gettext implemented by Ulrich Drepper.
1223 * The utmp daemon has been removed.
1225 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1227 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1230 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1232 * POSIX barriers implemented by Kaz Kylheku.
1234 * POSIX spawn function family implemented by Ulrich Drepper.
1236 * POSIX spinlocks are now available.
1238 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1240 * the configure option --enable-kernel=X.Y.Z allows to strip out
1241 compatibility for kernel versions before X.Y.Z. This is currently only
1242 implemented for Linux.
1244 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1245 field sin6_scope_id. This means that all programs using IPv6 should be
1246 recompiled. Don't expect binary compatibility with previous glibc
1249 * various conversion modules for IBM character sets contributed by
1252 * IA-64 port by Jes Sorensen and HJ Lu.
1266 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1268 * New xdr functions are added; some rpc functions are now 64bit clean.
1270 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1272 * Fixed known incompatibilities with glibc 2.0.
1274 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1276 * Optimized a number of functions (especially the ELF dynamic loader).
1278 * Update timezone data files.
1280 * lots of charmaps corrections
1282 * some new locale definitions and charmaps
1287 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1288 conform to POSIX member type requirements. Symbol versions have been
1289 adjusted as needed within the library, and for direct use by applications,
1290 but there is potential for problems if third-party libraries use
1291 struct timeval as part of their interface. This does not present
1292 a problem for X and other "essential" system libraries.
1294 * An additional locale model to support C++ Standard Library locale
1295 model and probably more was implemented by Ulrich Drepper.
1297 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1300 * Miles Bader provided the `argp' function family to support hierachical
1301 command line argument parsing, layered on top of getopt.
1303 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1305 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1308 * scanf recognizes the %a and %A format for scanning floating point numbers.
1310 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1311 information and interfaces for the available integer types.
1313 * about 130 new math functions were added to implement the ISO C9x math
1316 * the new header <complex.h> contains definitions of the complex math
1317 functions from ISO C 9X.
1319 * the new header <tgmath.h> defines generic macros to use complex or
1320 real valued functions.
1322 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1324 * Andreas Jaeger provided a test suite for the math library.
1326 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1328 * Ulrich Drepper added character set conversion functions (iconv).
1330 * Optimized string functions have been added.
1332 * The localedata addon is now part of glibc.
1334 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1336 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1337 daemon for NSS (nscd).
1339 Missing a better place here are some numbers on improvements. Under
1340 Linux 2.1.125 un-tar-ing the kernel sources takes
1344 using local files 12.19s 6.88s 22.91s
1346 using NIS 13.92s 8.91s 26.34s
1348 using NIS & nscd 10.37s 7.34s 25.30s
1350 using NIS+ 27.57s 30.37s 640.46s
1352 using NIS+ & nscd 10.25s 7.83s 26.51s
1354 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1356 Keep in mind that non-namelookup related operations dominate above times.
1357 It was just a common complain that using NIS+ unpacking the kernel is
1360 [1] The old nscd implementation is not available anymore since it was
1361 distributed with glibc up to version 2.0.98 and thus is now replaced.
1363 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1365 * Mark Kettenis provided a Hesiod NSS module.
1367 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1368 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1370 * rcmd can now handle netgroups (Dick Streefland).
1372 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1375 * Support for the IPv6 protocol has been added to the socket API, as per the
1376 latest draft standards.
1378 * Support for Linux 2.2 has been added.
1380 * Interface changes relative to the latest 2.0.x release:
1381 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1382 addseverity NEW: Unix98
1383 alphasort64 NEW: LFS
1384 argp_err_exit_status NEW: argp, GNU ext
1385 argp_error NEW: argp, GNU ext
1386 argp_failure NEW: argp, GNU ext
1387 argp_help NEW: argp, GNU ext
1388 argp_parse NEW: argp, GNU ext
1389 argp_program_bug_address NEW: argp, GNU ext
1390 argp_program_version NEW: argp, GNU ext
1391 argp_program_version_hook NEW: argp, GNU ext
1392 argp_state_help NEW: argp, GNU ext
1393 argp_usage NEW: argp, GNU ext
1394 authdes_create NEW: Secure RPC
1395 authdes_getucred NEW: Secure RPC
1396 authdes_pk_create NEW: Secure RPC
1397 backtrace NEW: GNU ext.
1398 backtrace_symbols NEW: GNU ext.
1399 backtrace_symbols_fd NEW: GNU ext.
1401 cacosf NEW: ISO C 9x
1402 cacosh NEW: ISO C 9x
1403 cacoshf NEW: ISO C 9x
1404 cacoshl NEW: ISO C 9x
1405 cacosl NEW: ISO C 9x
1412 casinf NEW: ISO C 9x
1413 casinh NEW: ISO C 9x
1414 casinhf NEW: ISO C 9x
1415 casinhl NEW: ISO C 9x
1416 casinl NEW: ISO C 9x
1418 catanf NEW: ISO C 9x
1419 catanh NEW: ISO C 9x
1420 catanhf NEW: ISO C 9x
1421 catanhl NEW: ISO C 9x
1422 catanl NEW: ISO C 9x
1423 cbc_crypt NEW: Secure RPC
1427 ccoshf NEW: ISO C 9x
1428 ccoshl NEW: ISO C 9x
1434 cimagf NEW: ISO C 9x
1435 cimagl NEW: ISO C 9x
1436 clearerr_locked REMOVED
1437 clntunix_create NEW: sunrpc ext
1439 clog10 NEW: ISO C 9x
1440 clog10f NEW: ISO C 9x
1441 clog10l NEW: ISO C 9x
1451 cprojf NEW: ISO C 9x
1452 cprojl NEW: ISO C 9x
1454 crealf NEW: ISO C 9x
1455 creall NEW: ISO C 9x
1460 csinhf NEW: ISO C 9x
1461 csinhl NEW: ISO C 9x
1464 csqrtf NEW: ISO C 9x
1465 csqrtl NEW: ISO C 9x
1469 ctanhf NEW: ISO C 9x
1470 ctanhl NEW: ISO C 9x
1472 des_setparity NEW: Secure RPC
1473 ecb_crypt NEW: Secure RPC
1474 endutxent NEW: Unix98
1476 exp10f NEW: ISO C 9x
1477 exp10l NEW: ISO C 9x
1481 fattach NEW: STREAMS
1482 fdetach NEW: STREAMS
1486 feclearexcept NEW: ISO C 9x
1487 fegetenv NEW: ISO C 9x
1488 fegetexceptflag NEW: ISO C 9x
1489 fegetround NEW: ISO C 9x
1490 feholdexcept NEW: ISO C 9x
1492 feraiseexcept NEW: ISO C 9x
1493 ferror_locked REMOVED
1494 fesetenv NEW: ISO C 9x
1495 fesetexceptflag NEW: ISO C 9x
1496 fesetround NEW: ISO C 9x
1497 fetestexcept NEW: ISO C 9x
1498 feupdateenv NEW: ISO C 9x
1499 fflush_locked REMOVED
1503 fgets_unlocked NEW: GNU ext.
1504 fileno_locked REMOVED
1516 fputc_locked REMOVED
1517 fputs_unlocked NEW: GNU ext.
1518 fread_unlocked NEW: GNU ext.
1523 fstatvfs NEW: Unix98
1527 ftruncate64 NEW: LFS
1529 fwrite_unlocked NEW: GNU ext.
1530 gai_strerror NEW: IPv6
1534 getchar_locked REMOVED
1536 getdate_err NEW: Unix98
1537 getdate_r NEW: GNU ext.
1539 getnameinfo NEW: IPv6
1540 getnetname NEW: Secure RPC
1541 getpmsg NEW: STREAMS
1542 getpt NEW: Unix98 PTY
1543 getrlimit64 NEW: LFS
1544 getutxent NEW: Unix98
1545 getutxid NEW: Unix98
1546 getutxline NEW: Unix98
1547 glob64 NEW: GNU ext.
1548 globfree64 NEW: GNU ext.
1549 gnu_get_libc_release NEW: GNU ext.
1550 gnu_get_libc_version NEW: GNU ext.
1551 grantpt NEW: Unix98 PTY
1552 host2netname NEW: Secure RPC
1554 iconv_close NEW: iconv
1555 iconv_open NEW: iconv
1556 if_freenameindex NEW: IPv6
1557 if_indextoname NEW: IPv6
1558 if_nameindex NEW: IPv6
1559 if_nametoindex NEW: IPv6
1560 in6addr_any NEW: IPv6
1561 in6addr_loopback NEW: IPv6
1562 inet6_isipv4mapped NEW: IPv6
1563 isastream NEW: STREAMS
1564 iswblank NEW: GNU ext.
1565 key_decryptsession NEW: Secure RPC
1566 key_decryptsession_pk NEW: Secure RPC
1567 key_encryptsession NEW: Secure RPC
1568 key_encryptsession_pk NEW: Secure RPC
1569 key_gendes NEW: Secure RPC
1570 key_get_conv NEW: Secure RPC
1571 key_secretkey_is_set NEW: Secure RPC
1572 key_setnet NEW: Secure RPC
1573 key_setsecret NEW: Secure RPC
1574 llrint NEW: ISO C 9x
1575 llrintf NEW: ISO C 9x
1576 llrintl NEW: ISO C 9x
1577 llround NEW: ISO C 9x
1578 llroundf NEW: ISO C 9x
1579 llroundl NEW: ISO C 9x
1584 lrintf NEW: ISO C 9x
1585 lrintl NEW: ISO C 9x
1586 lround NEW: ISO C 9x
1587 lroundf NEW: ISO C 9x
1588 lroundl NEW: ISO C 9x
1590 makecontext NEW: Unix98
1591 mempcpy NEW: GNU ext.
1594 modify_ldt NEW: kernel
1598 nearbyint NEW: ISO C 9x
1599 nearbyintf NEW: ISO C 9x
1600 nearbyintl NEW: ISO C 9x
1601 netname2host NEW: Secure RPC
1602 netname2user NEW: Secure RPC
1603 nexttoward NEW: ISO C 9x
1604 nexttowardf NEW: ISO C 9x
1605 nexttowardl NEW: ISO C 9x
1609 passwd2des NEW: Secure RPC
1611 pow10f NEW: GNU ext.
1612 pow10l NEW: GNU ext.
1615 printf_size NEW: GNU ext.
1616 printf_size_info NEW: GNU ext.
1617 profil_counter REMOVED
1618 pthread_mutexattr_getkind_np REPLACED
1619 pthread_mutexattr_setkind_np REPLACED
1620 ptsname NEW: Unix98 PTY
1621 ptsname_r NEW: Unix98 PTY
1623 putchar_locked REMOVED
1624 putgrent NEW: GNU ext.
1626 putpmsg NEW: STREAMS
1627 pututxline NEW: Unix98
1631 readdir64_r NEW: LFS
1632 remquo NEW: ISO C 9x
1633 remquof NEW: ISO C 9x
1634 remquol NEW: ISO C 9x
1636 roundf NEW: ISO C 9x
1637 roundl NEW: ISO C 9x
1639 scalbln NEW: ISO C 9x
1640 scalblnf NEW: ISO C 9x
1641 scalblnl NEW: ISO C 9x
1643 sendfile NEW: kernel
1644 setcontext NEW: Unix98
1645 setrlimit64 NEW: LFS
1646 setutxent NEW: Unix98
1648 sigignore NEW: Unix98
1649 sigqueue NEW: POSIX.1b
1650 sigrelse NEW: Unix98
1651 sigset NEW: POSIX.1b
1652 sigtimedwait NEW: POSIX.1b
1653 sigwaitinfo NEW: POSIX.1b
1654 sincos NEW: GNU ext.
1655 sincosf NEW: GNU ext.
1656 sincosl NEW: GNU ext.
1660 strcasestr NEW: GNU ext.
1661 strtoimax NEW: ISO C 9x
1662 strtoumax NEW: ISO C 9x
1663 strverscmp NEW: GNU ext.
1664 svcauthdes_stats NEW: Secure RPC
1665 svcunix_create NEW: sunrpc etx
1666 svcunixfd_create NEW: sunrpc ext
1667 swapcontext NEW: Unix98
1668 tcgetsid NEW: Unix98 PTY
1669 tdestroy NEW: GNU ext.
1670 tgamma NEW: ISO C 9x
1671 tgammaf NEW: ISO C 9x
1672 tgammal NEW: ISO C 9x
1676 truncf NEW: ISO C 9x
1677 truncl NEW: ISO C 9x
1679 unlockpt NEW: Unix98 PTY
1680 updwtmpx NEW: Unix98
1681 user2netname NEW: Secure RPC
1682 utmpxname NEW: Unix98
1683 versionsort NEW: GNU ext.
1684 versionsort64 NEW: GNU ext.
1686 wcscasecmp NEW: GNU ext.
1687 wcsncasecmp NEW: GNU ext.
1688 wcsnlen NEW: GNU ext.
1689 wcstoimax NEW: ISO C 9x
1690 wcstoll NEW: ISO C 9x
1691 wcstoull NEW: ISO C 9x
1692 wcstoumax NEW: ISO C 9x
1694 wordexp NEW: POSIX.2
1695 wordfree NEW: POSIX.2
1696 write_profiling REMOVED
1697 xdecrypt NEW: Secure RPC
1698 xdr_authdes_cred NEW: Secure RPC
1699 xdr_authdes_verf NEW: Secure RPC
1700 xdr_cryptkeyarg NEW: Secure RPC
1701 xdr_cryptkeyarg2 NEW: Secure RPC
1702 xdr_cryptkeyres NEW: Secure RPC
1703 xdr_getcredres NEW: Secure RPC
1704 xdr_key_netstarg NEW: Secure RPC
1705 xdr_key_netstres NEW: Secure RPC
1706 xdr_keybuf NEW: Secure RPC
1707 xdr_keystatus NEW: Secure RPC
1708 xdr_netnamestr NEW: Secure RPC
1709 xdr_sizeof NEW: Secure RPC
1710 xdr_unixcred NEW: sunrpc ext
1711 xencrypt NEW: Secure RPC
1712 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1723 * inet_ntoa is thread-safe
1725 * updwtmp is moved from libutil to libc
1727 * rewrite of cbrt function
1729 * update of timezone data
1743 * add atoll function
1745 * fix complex problems in Berkeley DB code
1747 * fix math functions
1751 * fixed lots of header problems (especially Linux/GNU specific)
1753 * dynamic loader preserves all registers
1755 * Roland McGrath provided support for handling of auxiliary objects in
1756 the ELF dynamic loader.
1758 * support for parallel builds is improved
1762 * GNU extensions are no longer declared by default. To enable them you
1763 must define the macro `_GNU_SOURCE' in your program or compile with
1766 * The library has changed from using GNU ld symbol aliases to using weak
1767 symbols where available. The ELF object file format supports weak
1768 symbols; GNU ld also supports weak symbols in the a.out format. (There
1769 is also now support for other GNU ld extensions in ELF. Use the
1770 `--with-elf' option to configure to indicate you have ELF, and
1771 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1772 of many files which contained only symbol aliases, reducing the size of
1773 the source and the compiled library; many other files were renamed to
1774 less cryptic names previously occupied by the symbol alias files.
1775 There is a new header file <elf.h> for programs which operate on
1776 files in the ELF format.
1778 * Converted to Autoconf version 2, so `configure' has more options.
1779 Run `configure --help' to see the details.
1781 * The library can now be configured to build profiling, highly-optimized
1782 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1783 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1784 `configure' enable building these extra libraries. The shared library is
1785 built by default when using both ELF and GNU ld. When shared libraries
1786 are enabled, the new library `-ldl' is available for arbitrary run-time
1787 loading of shared objects; its interface is defined in <dlfcn.h>. The
1788 new header file <link.h> gives access to the internals of the run-time
1789 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1790 application of same name on other systems and it provides information
1791 about dynamically linked binaries.
1793 * The C library now provides the run-time support code for profiling
1794 executables compiled with `-pg'. Programs can control the profiling code
1795 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1796 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1797 the support for this file format was contributed by David Mosberger-Tang.
1799 * The math code has been replaced with a math library based on fdlibm from
1800 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1801 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1802 functions. The math functions now reside in a separate library, so
1803 programs using them will need to use `-lm' their linking commands.
1805 * John C. Bowman contributed optimized ix87 assembler inline functions.
1807 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1808 mechanism similar to that found in Solaris 2. This is now used for the
1809 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1810 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1811 file controls what services are used for each individual database. This
1812 works by loading shared libraries with names specified in `nsswitch.conf',
1813 so service modules can be changed or added at any time without even
1814 relinking any program. Currently there are the file, db, and NIS based
1815 NSS services available.
1817 * The new functions `strtoq' and `strtouq' parse integer values from
1818 strings, like `strtol' and `strtoul', but they return `long long int' and
1819 `unsigned long long int' values, respectively (64-bit quantities).
1821 * The new functions `strtof' and `strtold' parse floating-point values from
1822 strings, like `strtod', but they return `float' and `long double' values,
1823 respectively (on some machines `double' and `long double' are the same).
1825 * Ulrich Drepper has contributed new implementations of the floating-point
1826 printing and reading code used in the `printf' family of functions and
1827 `strtod', `strtof', and `strtold'. These new functions are perfectly
1828 accurate, and much faster than the old ones.
1830 * The implementation of the POSIX locale model was completely rewritten by
1831 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1832 to compile the POSIX locale definition.
1834 * The former dummy implementations of the strcoll and strxfrm function are
1835 now replaced by fully functional code contributed by Ulrich Drepper. The
1836 collation information comes from the POSIX locale definitions.
1838 * The new header <langinfo.h> defines an interface for accessing
1839 various locale-dependent data (using the locale chosen with `setlocale').
1841 * Ulrich Drepper has contributed a new suite of functions for operation on
1842 wide-character and multibyte-character strings, in <wchar.h>;
1843 and classification and case conversion of wide characters, in <wctype.h>.
1844 These new functions are conforming to the ISO C, Amendement 1 specification.
1846 * There is now a second implementation of the standard I/O library available.
1847 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1848 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1850 * You can now use positional parameter specifications in format strings
1851 for the `printf' and `scanf' families of functions. For example,
1852 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1853 ``Number 6, Mr Jones''. This is mainly useful when providing different
1854 format strings for different languages, whose grammars may dictate
1855 different orderings of the values being printed. To support this
1856 feature, the interface for `register_printf_handler' has changed; see
1857 the header file <printf.h> for details.
1859 * The `printf' and `scanf' families of functions now understand a new
1860 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1861 to group numbers as indicated by the locale; for `scanf' and friends, this
1862 says to accept as valid only a number with all the proper grouping
1863 separators in the right places. In the default "C" locale, numbers are
1864 not grouped; but locales for specific countries will define the usual
1865 conventions (i.e. separate thousands with `,' in the US locale).
1867 * The pgrp functions have been regularized, slightly incompatibly but much
1868 less confusingly. The core functions are now `getpgid' and `setpgid',
1869 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1870 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1871 provided for compatibility. There is no longer an incompatible `getpgrp'
1872 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1874 * The new header file <fts.h> and suite of functions simplify programs that
1875 operate on directory trees. This code comes from 4.4 BSD.
1877 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1878 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1879 NSS scheme used in glibc.
1881 * There is a new malloc debugging hook `__memalign_hook'.
1883 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1884 `unsigned int' in <sys/types.h>. These are for compatibility only and
1885 their use is discouraged.
1887 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1888 done differently, so that it works even without GNU ld.
1890 * New function `euidaccess' checks allowed access to a file like `access',
1891 but using the effective IDs instead of the real IDs.
1893 * The time zone data files have been updated for the latest and greatest
1894 local time conventions of the countries of the world.
1896 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1899 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1900 for formatting floating-point numbers. They are provided only for
1901 compatibility; new programs should use `sprintf' instead. There are
1902 also equivalent function for the `long double' floating-point type and
1903 all functions also exist in a reentrant form.
1905 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1906 functions for maintaining the login-record files (primarily of use to
1907 system programs such as `login'), and convenient functions for
1908 allocating and initializing a pseudo-terminal (pty) device.
1910 * Ulrich Drepper has contributed new support for System V style
1911 shared memory and IPC on systems that support it.
1913 * Ulrich Drepper has contributed several miscellaneous new functions found
1914 in System V: The `hsearch' family of functions provide an effective
1915 implementation of hash tables; `a64l' and `l64a' provide a very simple
1916 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1919 * Ulrich Drepper has contributed new reentrant counterparts for the
1920 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1922 * Ulrich Drepper has contributed new, highly-optimized versions of several
1923 string functions for the i486/Pentium family of processors.
1925 * Ulrich Drepper has updated the Linux-specific code, based largely
1926 on work done in Hongjiu Lu's version of GNU libc for Linux.
1927 The GNU library now supports Linux versions 2.0.10 and later,
1928 using the ELF object file format (i[3456]86-*-linux).
1930 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1932 * David Mosberger-Tang and Richard Henderson have ported the C library
1933 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1934 dynamic linking support for ELF/Alpha.
1936 * Richard Henderson contributed several Alpha optimized assembler function
1937 for arithmetic and string handling.
1939 * Ulrich Drepper has contributed a new set of message catalog functions to
1940 support multiple languages using the <libintl.h> interface, for use with
1941 his new package GNU gettext. Translation volunteers have contributed
1942 catalogs of the library's messages in Spanish, German, and Korean.
1944 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1945 program and the `catgets' function for reading the catalog files it
1946 creates. (The <libintl.h> interface is preferred; we include the
1947 <nl_types.h> interface using `catgets' only for source compatibility with
1948 programs already written to use it.)
1950 * New header file <values.h> gives SVID-compatible names for <limits.h>
1953 * Various new macros, declarations, and small header files for compatibility
1956 * New function `group_member' is a convenient way to check if a process has
1957 a given effective group ID.
1959 * When using GCC 2.7 and later, the socket functions are now declared in a
1960 special way so that passing an argument of type `struct sockaddr_in *',
1961 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1962 `struct sockaddr *' type, does not generate a type-clash warning.
1964 * New function `error' declared in header file <error.h> is a convenient
1965 function for printing error messages and optionally exiting; this is the
1966 canonical function used in GNU programs. The new functions `err', `warn',
1967 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1968 doing the same thing.
1970 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1971 POSIX.2 `glob' function to do ~ and {...} expansion.
1973 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1974 `clearenv' which is used in POSIX.9 is also available.
1976 * New function `getsid' returns session ID number on systems that support it.
1978 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1979 files <db.h> and <mpool.h> provide a rich set of functions for several
1980 types of simple databases stored in memory and in files, and <ndbm.h> is
1981 an old `ndbm'-compatible interface using the `db' functions. Link with
1982 `-ldb' to get these functions.
1984 * New macro `strdupa' copies a string like `strdup', but uses local stack
1985 space from `alloca' instead of dynamic heap space from `malloc'.
1987 * New function `strnlen' is like `strlen' but searches only a given maximum
1988 number of characters for the null terminator. `stpncpy', `strndup' and
1989 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1992 * New function `statfs' in header <sys/statfs.h>.
1994 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1995 provide convenient functions for operating on blocks of null-terminated
1998 * A new suite of functions in <utmp.h> handle all the details of reading
1999 and writing the utmp file.
2001 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2004 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2005 completely POSIX compliant and also implemented the extended functionality
2006 to handle alternate digit representation and alternate era date formats.
2008 * Ulrich Drepper provided an implementation of the `strptime' function
2009 defined in XPG4.2 which transforms a string into a `struct tm' value.
2011 * Paul Eggert provided the tzselect shell script as part of the timezone
2012 code. The shell script makes it easy to select the correct timezone
2015 * The implementation of the malloc family of functions is completely replaced
2016 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2017 The implementation uses the mmap function (if available) and it is
2018 optimized for the use in multi threaded programs.
2020 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2021 functions. This new functionality is usable by specifying a special
2022 salt string and it is compatible with implementation on *BSD systems.
2024 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2025 `getsubopt' to handle second level command line options, `bsd_signal'
2026 to access BSD style `signal' functionality, the obsolete `regexp' style
2029 * the `lchown' function is available on system which support this
2032 * The implementation of the shadow password handling function was contributed
2035 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2037 * POSIX.1g support was added. The <sys/select.h> header is available,
2038 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2039 implementation of `getaddrinfo'.
2043 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2045 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2046 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2048 * The new function `daemon' from 4.4 BSD is useful for server programs that
2049 want to put themselves in the background.
2051 * Joel Sherrill has contributed support for several standalone boards that
2052 run without an operating system.
2054 * `printf', `scanf' and friends now accept a `q' type modifier for long
2055 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2057 * All of the code taken from BSD (notably most of the math and networking
2058 routines) has been updated from the BSD 4.4-Lite release.
2060 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2062 * The new functions `getdomainname' and `setdomainname' fetch or change the
2063 YP/NIS domain name. These are system calls which exist on systems which
2066 * The time zone data files have been updated for the latest international
2069 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2070 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2074 * The C library now includes support for Sun RPC, from Sun's free
2075 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2076 are included. (There is still no support for YP.)
2078 * Tom Quinn has contributed a port of the C library to SGI machines running
2079 Irix 4 (mips-sgi-irix4).
2081 * The new `lockf' function is a simplified interface to the locking
2082 facilities of `fcntl', included for compatibility.
2084 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2086 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2088 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2091 * The error message printed by `assert' for a failed assertion now includes
2092 the name of the program (if using GNU ld) and the name of the calling
2093 function (with versions of GCC that support this).
2095 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2097 * The library now includes the <sys/mman.h> header file and memory
2098 management functions `mmap', `munmap', `mprotect', `msync', and
2099 `madvise', on systems that support those facilities.
2101 * The interface for `mcheck' has changed slightly: the function called to
2102 abort the program when an allocation inconsistency is detected now takes
2103 an argument that indicates the type of failure. The new function
2104 `mprobe' lets you request a consistency check for a particular block at
2105 any time (checks are normally done only when you call `free' or `realloc'
2108 * It is now possible to easily cross-compile the C library, building on one
2109 system a library to run on another machine and/or operating system. All
2110 you need to do is set the variable `HOST_CC' in `configparms' to the
2111 native compiler for programs to run on the machine you are building on (a
2112 few generator programs are used on Unix systems); set `CC' to the
2115 * The new function `fexecve' (only implemented on the GNU system) executes
2116 a program file given a file descriptor already open on the file.
2120 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2121 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2123 * You can set the variable `libprefix' in `configparms' to specify a prefix
2124 to be prepended to installed library files; this makes it easy to install
2125 the GNU C library to be linked as `-lgnuc' or whatever.
2127 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2128 copies a limited number of characters from a string, and returns the
2129 address of the last character written.
2131 * You no longer need to check for whether the installed `stddef.h' is
2132 compatible with the GNU C library. configure now checks for you.
2134 * You can now define a per-stream `fileno' function to convert the
2135 stream's cookie into an integral file descriptor.
2137 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2138 allocates zero bytes of storage, and returns a unique pointer which
2139 you can pass to `realloc' or `free'. The behavior is undefined if
2140 you dereference this pointer.
2142 * The C library now runs on Sony NEWS m68k machines running either
2143 NewsOS 3 or NewsOS 4.
2145 * The new `syscall' function is a system-dependent primitive function
2146 for invoking system calls. It has the canonical behavior on Unix
2147 systems, including unreliable return values for some calls (such as
2148 `pipe', `fork' and `getppid').
2150 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2151 to `EAGAIN', which is the preferred name. On systems whose kernels
2152 use two distinct codes, the C library now translates EWOULDBLOCK to
2153 EAGAIN in every system call function.
2157 * The GNU C Library Reference Manual is now distributed with the library.
2158 `make dvi' will produce a DVI file of the printed manual.
2159 `make info' will produce Info files that you can read on line using C-h i
2160 in Emacs or the `info' program.
2161 Please send comments on the manual to bug-glibc-manual@gnu.org.
2163 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2165 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2167 * Jason Merrill has contributed a port to the Sequent Symmetry running
2168 Dynix version 3 (i386-sequent-dynix).
2170 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2171 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2173 * New function `memory_warnings' lets you arrange to get warnings when
2174 malloc is running out of memory to allocate, like Emacs gives you.
2176 * The C library now contains the relocating allocator used in Emacs 19 for
2177 its editing buffers. This allocator (ralloc) minimizes allocation
2178 overhead and fragmentation by moving allocated regions around whenever it
2179 needs to. You always refer to a ralloc'd region with a "handle" (a
2180 pointer to a pointer--an object of type `void **').
2182 * There is a new `printf' format: `%m' gives you the string corresponding
2183 to the error code in `errno'.
2185 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2186 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2187 pass, the `a' modifier says to fill in a `char **' you pass with a
2190 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2191 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2192 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2194 * `mkstemp' is a traditional Unix function to atomically create and open a
2195 uniquely-named temporary file.
2199 * The standard location for the file that says what the local timezone is
2200 has changed again. It is now `/usr/local/etc/localtime' (or more
2201 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2203 * The distribution no longer contains any files with names longer than 14
2206 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2207 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2209 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2213 * The configuration process has changed quite a bit. The `configure'
2214 script is now used just like the configuration scripts for other GNU
2215 packages. The `sysdeps' directory hierarchy is much rearranged.
2216 The file `INSTALL' explains the new scheme in detail.
2218 * The header files no longer need to be processed into ANSI C and
2219 traditional C versions. There is just one set of files to install, and
2220 it will work with ANSI or old C compilers (including `gcc -traditional').
2222 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2223 MIPS DECStation running Ultrix 4.
2225 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2226 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2227 made itself into a shared library.
2229 * Yet further improved support for the i386, running 4.3 BSD-like systems
2230 (such as Mach 3 with the Unix single-server), or System V.
2232 * New function `strncasecmp' to do case-insensitive string comparison
2233 with limited length.
2235 * New function `strsep' is a reentrant alternative to `strtok'.
2237 * New functions `scandir' and `alphasort' for searching directories.
2239 * New function `setenv' is a better interface to `putenv'.
2241 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2242 function for traversing a directory tree.
2244 * The GNU obstack package is now also part of the C library.
2245 The new function `open_obstack_stream' creates a stdio stream that
2246 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2247 formatted output directly to an obstack.
2249 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2250 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2252 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2254 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2255 things to your strings.
2257 * There are some new test programs: test-fseek, testmb, and testrand.
2259 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2260 These ports are not finished, but are a good starting place for really
2261 supporting those systems.
2263 * `/etc/localtime' is now the standard location for the file that says what
2264 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2265 This follows the general principle that `/etc' is the place for all local
2266 configuration files.
2268 * The C library header files now use `extern "C"' when used by the C++
2269 compiler, so the C library should now work with C++ code.
2271 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2272 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2275 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2276 function which uses the `merge sort' algorithm, and is said to be
2277 significantly faster than the old GNU `qsort' function. Merge sort is
2278 now the standard `qsort' function. The new algorithm can require a lot
2279 of temporary storage; so, the old sorting function is called when the
2280 required storage is not available.
2282 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2283 provides the Unix `crypt' function, plus some other entry points.
2285 * The code and header files taken from 4.4 BSD have been updated with the
2286 latest files released from Berkeley.
2288 ----------------------------------------------------------------------
2289 Copyright information:
2291 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2293 Permission is granted to anyone to make or distribute verbatim copies
2294 of this document as received, in any medium, provided that the
2295 copyright notice and this permission notice are preserved,
2296 thus giving the recipient permission to redistribute in turn.
2298 Permission is granted to distribute modified versions
2299 of this document, or of portions of it,
2300 under the above conditions, provided also that they
2301 carry prominent notices stating who last changed them.
2304 version-control: never
git.samba.org / jlayton / glibc.git / blob