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 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
13 11561, 12310, 12387, 12515, 12723, 13550, 13889, 13951, 13988, 14142,
14 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496, 14582,
15 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952, 14964,
16 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006, 15007,
17 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078, 15084,
18 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283, 15285,
19 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336, 15337,
20 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394, 15395,
21 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426, 15429,
22 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488, 15490,
23 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583, 15618,
24 15627, 15631, 15654, 15655, 15666, 15667, 15674.
26 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
29 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
30 fixed (Bugzilla #15330).
32 * Add support for calling C++11 thread_local object destructors on thread
33 and program exit. This needs compiler support for offloading C++11
34 destructor calls to glibc.
36 * Improved worst case performance of libm functions with double inputs and
39 * Support for priority inherited mutexes in pthread condition variables on
40 non-x86 architectures.
42 * Added a benchmark framework to track performance of functions in glibc.
44 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
45 It is based on draft TS 18661 and currently enabled as a GNU extension.
47 * On Linux, the clock function now uses the clock_gettime system call
48 for improved precision, rather than old times system call.
50 * Added new API functions pthread_getattr_default_np and
51 pthread_setattr_default_np to get and set the default pthread
52 attributes of a process.
56 * The following bugs are resolved with this release:
58 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
59 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
60 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
61 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
62 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
63 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
64 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
65 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
66 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
67 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
68 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
69 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
70 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
71 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
72 14879, 14889, 14893, 14898, 14914.
74 * Optimization of memcpy for MIPS.
76 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
77 EMFILE has been fixed (Bugzilla #14889).
79 * The add-on ports collection is now distributed in the "ports" subdirectory
80 of the main GNU C Library distribution, rather than separately.
82 * Port to ARM AArch64 contributed by Linaro.
84 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
85 Optimized versions of memcpy, memset, and memcmp added for System z10 and
87 Implemented by Andreas Krebbel.
89 * The new function secure_getenv allows secure access to the environment,
90 returning NULL if running in a SUID/SGID process. This function replaces
91 the internal function __secure_getenv.
93 * SystemTap static probes have been added into the dynamic linker.
94 Implemented by Gary Benson.
96 * Optimizations of string functions strstr, strcasestr and memmem.
97 Implemented by Maxim Kuvyrkov.
99 * The minimum Linux kernel version that this version of the GNU C Library
100 can be used with is 2.6.16.
102 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
103 powerpc POWER7. Implemented by Will Schmidt.
105 * New configure option --disable-nscd builds the C library such that it
106 never attempts to contact the Name Service Caching Daemon (nscd).
107 New configure option --disable-build-nscd avoids building nscd itself;
108 this is the default if --disable-nscd is used.
110 * Improved support for cross-compilation, including cross-testing and
111 bootstrap builds without a previously built glibc.
113 * Several testsuite tests are now able to test multiple IFUNC variants of an
114 interface, rather than just testing the one that would be chooen by
117 * New configure options --with-bugurl and --with-pkgversion, for
118 distributors to use to embed their bug-reporting and package version
119 information in --help and --version output.
121 * The ttyname and ttyname_r functions on Linux now fall back to searching for
122 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
123 allows creation of chroots without the procfs mounted on /proc.
125 * The `crypt' function now fails if passed salt bytes that violate the
126 specification for those values. On Linux, the `crypt' function will
127 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
128 enabled, and fail on encrypted strings using the MD5 or DES algorithm
129 when the mode is enabled.
131 * The `clock_*' suite of functions (declared in <time.h>) is now available
132 directly in the main C library. Previously it was necessary to link with
133 -lrt to use these functions. This change has the effect that a
134 single-threaded program that uses a function such as `clock_gettime' (and
135 is not linked with -lrt) will no longer implicitly load the pthreads
136 library at runtime and so will not suffer the overheads associated with
137 multi-thread support in other code such as the C++ runtime library.
139 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
144 * The following bugs are resolved with this release:
146 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
147 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
148 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
149 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
150 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
151 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
152 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
153 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
154 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
155 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
156 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
157 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
158 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
159 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
160 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
161 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
162 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
163 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
164 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
165 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
166 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
167 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
170 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
171 configuring glibc with:
172 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
173 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
174 Implemented by H.J. Lu.
178 + define static_assert
180 + do not declare gets
182 + declare at_quick_exit and quick_exit also for ISO C11
184 + aligned_alloc. NB: The code is deliberately allows the size parameter
185 to not be a multiple of the alignment. This is a moronic requirement
186 in the standard but it is only a requirement on the caller, not the
191 + uchar.h support added
193 + CMPLX, CMPLXF, CMPLXL added
195 Implemented by Ulrich Drepper.
197 * Support for the IA-64 has been moved to ports.
199 * Remove support for anything but ELF binary format
201 * Checking versions of poll, ppoll added.
202 Implemented by Ulrich Drepper.
204 * More generic and 64-bit performance optimizations to math functions.
205 Implemented by Ulrich Drepper.
207 * New configure option --enable-obsolete-rpc makes the deprecated RPC
208 headers and functions available at compile time as they were before
209 version 2.14. This option will be removed at some time in the future
210 after the TI-RPC library becomes fully sufficient for the needs of
211 existing applications.
213 * Compatibility code for Linux kernel versions before 2.4 has been removed.
214 Note that glibc is not expected to work with any Linux kernel version
217 * New header <sys/auxv.h> and function getauxval allowing easy access to
218 the AT_* key-value pairs passed from the Linux kernel. The header also
219 defines the HWCAP_* bits associated with the AT_HWCAP key.
221 * New locales: mag_IN
223 * New configure option --enable-systemtap builds SystemTap static probes
224 into libc for setjmp and longjmp and into libpthread for various operations.
225 So far the setjmp/longjmp probes and some of the libpthread probes are
226 provided only for i*86 and x86_64.
227 Implemented by Roland McGrath and Rayson Ho.
229 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
231 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
234 * More optimized functions for SPARC. Implemented by David S. Miller.
236 * Improved support for cross-compilation, especially bootstrap builds
237 without a previously built glibc.
239 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
240 Chris Metcalf from Tilera.
242 * Support for the old ARM ABI has been removed from ports. Only the EABI is
243 now supported for ARM processors.
245 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
246 as the name of the dynamic linker, to distinguish it from the
247 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
249 * Support for CRIS has been removed from ports.
251 * A new class of installed header has been documented for low-level
252 platform-specific functionality. PowerPC added the first instance with a
253 function to provide time base register access. Contributed by Tulio
254 Magno Quites Machado Filho.
256 * ix86 configurations now install header files that are consistent with
257 what x86-64 configurations install. These same header files can be used
258 for -m32, -m64, or -mx32 builds.
259 Contributed by H.J. Lu.
261 * Math library bug fixes. A thorough audit of all open math library bugs was
262 conducted by Joseph Myers. Significant progress was made on many math
263 library bugs resulting in more accurate exceptions and function results.
264 Many thanks to all those that contributed including Andreas Jaeger for his
265 patch review and work on the x87 trigonometric instruction issues.
267 * Timezone data is no longer installed. Timezone-related binaries and scripts
268 will continue to be installed. Users should obtain their timezone data from
269 their distribution provider or from the tzdata package at
270 <ftp://munnari.oz.au/pub/>.
274 * The following bugs are resolved with this release:
276 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
277 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
278 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
279 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
280 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
281 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
282 13484, 13506, 13515, 13523, 13524, 13538, 13540
284 * New program pldd to list loaded object of a process
285 Implemented by Ulrich Drepper.
287 * Add nss_db support back to glibc. No more dependency on Berkeley db
288 and support for initgroups lookups.
289 Implemented by Ulrich Drepper.
291 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
292 Contributed by HJ Lu.
294 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
295 Contributed by HJ Lu.
297 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
298 on x86-32 and x86-64.
299 Contributed by Liubov Dmitrieva.
301 * Optimized strchr and strrchr for SSE on x86-32.
302 Contributed by Liubov Dmitrieva.
304 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
305 for x86-64 and x86-32.
306 Contributed by Liubov Dmitrieva.
308 * New interfaces: scandirat, scandirat64
309 Implemented by Ulrich Drepper.
311 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
312 Implemented by Ulrich Drepper.
314 * nscd now also caches the netgroup database.
315 Implemented by Ulrich Drepper.
317 * Integrate libm with gcc's -ffinite-math-only option.
318 Implemented by Ulrich Drepper.
320 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
321 to math functions. Implemented by Ulrich Drepper.
323 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
324 Implemented by Ulrich Drepper.
326 * New Linux interfaces: process_vm_readv, process_vm_writev
328 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
329 Implemented by Ulrich Drepper.
331 * Optimized nearbyint and strcasecmp for PPC.
332 Implemented by Adhemerval Zanella.
334 * New locales: bho_IN, unm_US, es_CU, ta_LK
338 * The following bugs are resolved with this release:
340 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
341 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
342 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
343 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
344 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
345 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
346 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
347 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
348 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
349 12795, 12811, 12813, 12814, 12841
351 * The RPC implementation in libc is obsoleted. Old programs keep working
352 but new programs cannot be linked with the routines in libc anymore.
353 Programs in need of RPC functionality must be linked against TI-RPC.
354 The TI-RPC implementation is IPv6 enabled and there are other benefits.
356 Visible changes of this change include (obviously) the inability to link
357 programs using RPC functions without referencing the TI-RPC library and the
358 removal of the RPC headers from the glibc headers.
359 Implemented by Ulrich Drepper.
361 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
362 syncfs, setns, sendmmsg
364 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
365 yue_HK, lij_IT, mhr_RU
367 * New encodings: CP770, CP771, CP772, CP773, CP774
369 * New program sotruss to trace calls through PLTs
370 Implemented by Ulrich Drepper.
372 * The malloc hook implementation is marked deprecated and will be removed
373 from the default implementation in the next version. The design never
374 worked ever since the introduction of threads. Even programs which do
375 not create threads themselves can use multiple threads created internally.
379 * The following bugs are resolved with this release:
381 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
382 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
383 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
384 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
387 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
389 * POWER7 optimizations: memset, memcmp, strncmp
391 * New optimized string functions for x86-64: strnlen (SSE2),
392 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
393 Implemented by Ulrich Drepper.
397 * The following bugs are resolved with this release:
399 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
400 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
401 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
402 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
403 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
404 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
405 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
406 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
408 * New interfaces: pthread_getname_np, pthread_setname_np
410 * New Linux interface: recvmmsg
412 * STT_GNU_IFUNC implemented for Sparc by David Miller.
414 * The dynamic linker now recognizes supported ABI versions from the
415 EI_ABIVERSION field in the ELF header.
416 Implemented by Ulrich Drepper.
418 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
419 will not be used to fill in password fields in the passwd.byname replies.
420 Instead it is used to synthesize the shadow.byname table, should it be
421 missing. This is a useful mode in some installations involving Solaris.
422 Implemented by Ulrich Drepper.
424 * New locales: kok_IN, sq_MK, cv_RU
428 * The following bugs are resolved with this release:
430 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
431 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
432 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
433 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
434 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
435 10789, 10817, 10823, 10840, 10847
437 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
439 Implemented by Ulrich Drepper.
441 * Checking version of longjmp added that fails if an uninitialized stack
442 frame would be created. Implemented by Ulrich Drepper.
444 * STT_GNU_IFUNC is now supported in static executables.
445 Implemented by H.J. Lu.
447 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
449 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
450 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
451 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
452 Contributed by H.J. Lu.
454 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
455 Implemented by Ulrich Drepper.
457 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
459 Contributed by H.J. Lu.
461 * Support for fma instruction in AVX on x86-64.
462 Implemented by H.J. Lu and Ulrich Drepper.
464 * AVX support in x86-64 auditing support in ld.so.
465 Implemented by H.J. Lu.
467 * STB_GNU_UNIQUE support added.
468 Implemented by Ulrich Drepper.
470 * Implement second fallback mode for optimized DNS lookup for even more
471 broken environments. If two requests from the same port are not
472 handled correctly close the socket and open a new one before sending
473 the second request. The 'single-request-reopen' option in /etc/resolv.conf
474 can be used to select this mode right away, instead of rediscovering the
475 necessity is every process again.
476 Implemented by Ulrich Drepper.
478 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
479 Implemented by Adam Tkac.
481 * Optimized iconv conversions for S390x.
482 Implemented by Andreas Krebbel.
484 * Using condvars with PI mutexes is now more efficient due to kernel
485 support for requeueing to PI futexes. NPTL support added for x86-64.
486 Implemented by Ulrich Drepper.
488 * New locales: ps_AF, my_MM
492 * The following bugs are resolved with this release:
494 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
495 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
496 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
497 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
498 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
500 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
501 Implemented by Ulrich Drepper.
503 * New Linux interfaces: accept4, fallocate, fallocate64.
504 Implemented by Ulrich Drepper.
506 * Correct declarations of string function when used in C++ code. This
507 could lead to compile errors for invalid C++ code.
509 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
512 * New POSIX 2008 interface: psiginfo
513 Implemented by Ulrich Drepper.
515 * New ISO C++1x interfaces: quick_exit, at_quick_exit
516 Implemented by Ulrich Drepper.
518 * Support for selecting between multiple function definitions at runtime
519 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
521 * The libcrypt library can now use the hash function implementations in
522 NSS. Implemented by Ulrich Drepper.
524 * The malloc implementation can be compiled to be less memory efficient
525 but higher performing in multi-threaded programs.
526 Implemented by Ulrich Drepper.
528 * New locales: nan_TW@latin, ks_IN
530 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
531 Implemented by Ulrich Drepper.
533 * Extended printf hook support. It is possible to use user-defined types
534 and extend existing format specifiers.
535 Implemented by Ulrich Drepper.
537 * Handling for group shadow files has been added.
538 Implemented by Ulrich Drepper.
540 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
541 servers (the case, e.g., for some people using the built-in DNS
542 server in ADSL modems/routers). There is a once-per-process timeout
543 in case of a broken server. To avoid it, users can run nscd or put
544 'options single-request' in /etc/resolv.conf.
545 Implemented by Ulrich Drepper.
549 * The following bugs are resolved with this release:
551 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
552 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
553 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
554 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
555 6968, 6974, 6980, 6995, 7008, 7009, 7029
557 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
558 up at the same time. Implemented by Ulrich Drepper.
560 * TLS descriptors for LD and GD on x86 and x86-64.
561 Implemented by Alexandre Oliva.
563 * getaddrinfo now handles DCCP and UDPlite.
564 Implemented by Ulrich Drepper.
566 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
567 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
568 Implemented by Ulrich Drepper.
570 * New implementation of memmem, strstr, and strcasestr which is O(n).
571 Implemented by Eric Blake.
573 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
575 * Implement "e" option for popen to open file descriptor with the
576 close-on-exec flag set. Implemented by Ulrich Drepper.
578 * Implement "b" mode for fmemopen. In this mode writes writes don't
579 implicitly add a NUL byte and seeks from the end of the buffer really
580 use the buffer end, not the string length as the basis.
581 Implemented by Ulrich Drepper.
583 * Many functions, exported and internal, now atomically set the close-on-exec
584 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
586 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
588 Implemented by Pravin Satpute.
590 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
594 * The following bugs are resolved with this release:
596 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
597 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
598 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
599 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
600 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
601 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
602 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
604 * New locales: bo_CN, bo_IN, shs_CA.
606 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
608 * Sorting rules for some Indian languages (Devanagari and Gujarati).
609 Implemented by Pravin Satpute.
611 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
613 * nscd caches now all timeouts for DNS entries
614 Implemented by Ulrich Drepper.
616 * nscd is more efficient and wakes up less often.
617 Implemented by Ulrich Drepper.
619 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
620 vdprintf, and obstack_vprintf.
621 Implemented by Jakub Jelinek.
623 * Faster memset for x86-64.
624 Implemented by Harsha Jagasia and H.J. Lu.
626 * Faster memcpy on x86.
627 Implemented by Ulrich Drepper.
629 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
630 Implemented by Ulrich Drepper.
632 * Faster sqrt and sqrtf implemention for some PPC variants.
633 Implemented by Steven Munroe.
637 * The following bugs are resolved with this release:
639 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
640 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
641 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
642 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
643 5071, 5103, 5104, 5112, 5113, 5184, 5186
645 * More checking functions: fread, fread_unlocked, open*, mq_open.
646 Implemented by Jakub Jelinek and Ulrich Drepper.
648 * Extend fortification to C++. Implemented by Jakub Jelinek.
650 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
651 by not recognizing 'a' as a modifier when those specs are requested.
652 Implemented by Jakub Jelinek.
654 * PPC optimizations to math and string functions.
655 Implemented by Steven Munroe.
657 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
658 options to be passed. Implemented by Ulrich Drepper.
660 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
662 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
663 Implemented by Ulrich Drepper.
665 * Handle private futexes in the NPTL implementation.
666 Implemented by Jakub Jelinek and Ulrich Drepper.
668 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
669 Implemented by Roland McGrath and Ulrich Drepper.
671 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
673 * SHA-256 and SHA-512 based password encryption.
674 Implemented by Ulrich Drepper.
676 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
677 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
680 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
681 Implemented by Ulrich Drepper.
685 * The following bugs are resolved with this release:
687 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
688 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
689 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
690 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
691 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
692 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
693 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
696 * New Linux interfaces: epoll_pwait, sched_getcpu.
698 * New generic interfaces: strerror_l.
700 * nscd can now cache the services database. Implemented by Ulrich Drepper.
704 * The following bugs are resolved with this release:
706 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
707 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
708 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
709 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
710 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
711 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
712 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
713 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
714 3225, 3251, 3252, 3253, 3273
716 * For Linux, the sorting of addresses returned by getaddrinfo now also
717 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
718 Implemented by Ulrich Drepper.
720 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
721 Implemented by Ulrich Drepper.
723 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
725 * New iconv module for MIK. Contributed by Alexander Shopov.
727 * For sites with broken group and/or passwd database, the auto-propagate
728 option of nscd can prevent creating ID lookup entries from the results
729 of a name lookup and vice versa. This usually is no problem but some
730 site might have problems with the default behavior.
731 Implemented by Ulrich Drepper.
733 * Iterating over entire database in NIS can be slow. With the
734 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
735 to trade time for memory. The entire database will be read at once.
736 Implemented by Ulrich Drepper.
738 * The interfaces introduced in RFC 3542 have been implemented by
741 * Support for the new ELF hash table format was added by Ulrich Drepper.
743 * Support for priority inheritance mutexes added by Jakub Jelinek and
746 * Support for priority protected mutexes added by Jakub Jelinek.
748 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
749 or_IN, csb_PL, fy_NL, sr_ME.
753 * More overflow detection functions.
755 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
756 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
758 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
759 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
760 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
761 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
762 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
763 by Masahide Washizawa.
765 * It is now possible to install audit libraries for the dynamic linker using
766 LD_AUDIT. Implemented by Ulrich Drepper.
768 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
769 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
770 For a libc and libpthread that works well on Linux 2.4 kernels, we
771 recommend using the stable 2.3 branch.
773 * The new function open_wmemstream acts like open_memstream,
774 but uses a wchar_t wide character buffer.
776 * The new function ppoll is an improved version of poll, similar to pselect.
778 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
779 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
780 renameat, unlinkat, linkat, symlinkat, readlinkat.
782 * New Linux kernel system calls: unshare,
783 inotify_init, inotify_add_watch, inotify_rm_watch.
785 * The euidaccess function is now also known by the alias eaccess,
786 for compatibility with some other systems.
788 * Timezone data updated to 2006b version.
792 * The following bugs are resolved with this release:
794 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
795 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
796 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
797 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
798 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
799 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
801 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
803 * As of this release, GCC 4 can be used to compile the C Library.
805 * Timezone data updated to 2005m version.
809 * The following bugs are resolved with this release:
811 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
812 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
813 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
814 777, 787, 821, 822, 823, 825
816 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
820 * Support for RFC 3678. Real implementations exist only for Linux so far.
821 Implemented by Ulrich Drepper.
823 * nscd can now cache entries persistently. Expiring entries are reloaded.
824 For speedups the cache can be shared in memory with client processes.
825 Implemented by Ulrich Drepper.
827 * nscd can now perform SELinux checks.
828 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
830 * getaddrinfo queries are now cached. Canonical name lookup is performed
832 Implemented by Ulrich Drepper.
834 * The nothrow function attribute is used when headers are used by gcc when
835 compiling C code. This can avoid significant amounts of exception
838 * The malloc functions perform more error checking and are stricter when
839 it comes to reacting on errors. The default action is to terminate
840 the process after showing an error message. Implemented by Ulrich Drepper.
842 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
843 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
845 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
846 namespaces using the new function dlmopen(). This feature is of course,
847 like most other dynamic loading functionality, not available in statically
848 linked applications. Implemented by Ulrich Drepper.
850 * Low-overhead boundary checking variants of string and some stdio functions
851 were added. These are to be used in conjunction with a gcc patch by
852 Jakub Jelinek which adds calls to these functions if possible.
853 Implemented by Jakub Jelinek and Ulrich Drepper.
855 * Old code for several operating systems and machine architectures that
856 have not been in working condition in a long time have been removed from
857 the main source tree maintained by the GNU C Library's maintainers.
858 These files are now reside in the separate `ports' source module
859 that is usable as an add-on when building the library.
863 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
864 interrogate the dynamic linker, compatible with the Solaris interface.
866 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
867 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
869 * getifaddrs now uses the netlink interface on Linux to get its information.
870 Implemented by Thorsten Kukuk.
872 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
873 Implemented by Ulrich Drepper.
875 * support for non-executable stacks on x86 has been added. Changes mostly
878 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
881 * getaddrinfo now performs destination address selection according to
886 * Thread-safe interfaces for many functions that access locale data
887 were added in version 2.3, but these features were omitted from NEWS.
888 Many functions have variants with an `_l' suffix that take a `locale_t'
889 object as a parameter rather than consulting the current locale.
890 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
891 create and maintain `locale_t' objects. Additionally, the new function
892 `uselocale' sets "the current locale" (as used by functions not so
893 parameterized) set for an individual thread. These features were added
894 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
896 * The functions getresuid, getresgid, setresuid, and setresgid, which
897 have long been available on Linux, are now declared in <unistd.h>
898 and are now also available on the Hurd.
900 * ELF thread-local storage support (TLS) now works on x86-64.
902 * The new dynamic string token $LIB is expanded in shared library names.
903 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
905 * Aldy Hernandez contributed complete software floating point support for
906 PowerPC machines with no FPU.
908 * fexecve is implemented on Linux.
910 * The `btowc' function should work at least twice as fast due to
911 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
913 * With approriate thread add-ons cancelable functions are now implemented
914 in libc.so as well. No need to call the function in libpthread. This
915 change allowed to finally disable the incorrect and expensive handling
916 of weak definition in ld.so.
918 * Yet more PLT entries in libc.so have been removed. We finally arrived
919 at the bare minimum. Startup times improved appropriately.
921 * Support for the new Linux/x86 system call interface was added. The
922 AT_SYSINFO auxiliary vector entry is recognized and handled.
926 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
929 * iconv (the program and the interface) now accepts empty names (excluding
930 options like //TRANSLIT) to mean "use charset of current locale".
932 * localedef can now transliterate characters in strings which are not in
933 the provided charmap. The information from the input locale is used.
935 * Prelinking support was added for ELF targets. This requires additional
936 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
938 * Read-only stdio streams now use mmap to speed up operation by eliminating
939 copying and buffer underflows. To use add 'm' to the mode string of
940 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
942 * The malloc functions were completely rewritten by Wolfram Gloger based
943 on Doug Lea's malloc-2.7.0.c.
945 * Isamu Hasegawa contributed a completely new and POSIX-conformant
946 implementation of regex.
948 * Bruno Haible upgraded the iconv and locale implementation to support
951 * Contents of the LC_* and LANG environment variables in the CEN style are
952 not recognized anymore. It never was used. Change by Ulrich Drepper.
954 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
955 thread-local storage (TLS) ABI on some platforms.
956 Changes by Ulrich Drepper. SH support by Kaz Kojima.
958 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
959 EUC-JISX0213, and TSCII.
961 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
962 BSD-compatible interface for getting all network interface addresses.
963 Implementation for IPv4 by Roland McGrath.
965 * Loading of locale data is faster due to the introduction of a locale
966 archive. Implemented by Roland McGrath and Ulrich Drepper.
968 * Startup times are significantly reduced by not using exported functions
969 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
972 * Steven Munroe contributed a port to PowerPC64/Linux.
976 * The Hurd now uses the GNU libio implementation of stdio rather than the
977 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
979 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
980 with the same behavior as the Linux system call of the same name.
984 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
985 128-bit long double format.
987 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
988 IBM1161, and IBM1162 charsets.
990 * Andreas Jaeger contributed a port to x86-64/Linux.
992 * Peter Bruin contributed a port to PowerPC/Hurd.
994 * libc functions using I/O streams now can handle wide-oriented streams
997 * optimizations in the dynamic linker. Binaries created by recent binutils
998 versions start up quicker due to reduced time spent on relocations.
1000 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1004 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1005 asinh, atanh, j0 for the 128-bit long double format.
1007 * Bruno Haible updated all the code handling Unicode in some form to
1008 support Unicode 3.1.
1010 * Speed of regex for single-byte locales is back to previous levels.
1011 Patch by Isamu Hasegawa.
1013 * Alpha, SPARC, and IA-64 now also using floating stacks.
1015 * Startup time of internationalized applications greatly improved through
1016 iconv cache. Use iconvconfig to generate the cache file.
1017 Contributed by Ulrich Drepper.
1019 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1020 severe performance problems. Patch by David Mosberger.
1022 * The Hurd port got a lot more functionality like AIO, various stdio
1023 extensions, etc. Mainly done by Roland McGrath.
1025 * mtrace can now lookup symbols in shared libraries.
1029 * Intel's IA-64 math library is largely integrated. It provides fast and
1030 accurate implementatations for most basic and standard math functions
1031 in float, double, and long double format.
1033 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1034 and asin for the 96-bit long double format and asin, log, tan for the
1035 128-bit long double format.
1037 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1038 The basic double functions exist today. Contributed by Abraham Ziv
1039 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1040 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1042 * An asynchronous name lookup library was added. The interface is designed
1043 after POSIX AIO. The proposal was circulated beforehand to get comments.
1044 No negative ones came in. Implemented by Ulrich Drepper.
1046 * Port to S390/64bit contributed by Martin Schwidefsky
1047 <schwidefsky@de.ibm.com>.
1049 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1050 of functions for Linux/IA-64.
1052 * The RPC code is now thread safe. Threads can now use the same service
1053 of different services at the same time. Patch by Eric Norum
1054 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1056 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1057 family of functions for Linux/S390.
1059 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1060 of functions for Linux/x86.
1062 * Port to Linux/CRIS contributed by Axis Communications.
1066 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1067 we can now check for namespace violations and missing declarations. The
1068 result is that almost all headers are now Unix-compliant (as defined in
1069 the upcoming XPG6). The negative side is that some programs might need
1070 corrections, too, if they depend on the incorrect form of the headers in
1071 previous versions which defined too many symbols and included too many
1074 * regex now handles multibyte character sets correctly.
1075 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1077 * iconv (the program) does now conform to the upcoming XPG6 and handles
1078 charmaps. Instead of the charset names the path of charmaps can be
1079 provided and the conversion happens based on this data.
1080 Contributed by Ulrich Drepper.
1082 * The locale program now provides detailed information about the installed
1087 only lists the names of the supported locales
1091 provides details such as country, language, and codeset name.
1092 Contributed by Ulrich Drepper.
1096 * The gencat program now parses the input file according to the charset
1097 selected by the LC_CTYPE category. This is important for stateful
1098 character sets. To make generating catalogs easier there is a way
1099 to overwrite the charset selected by the locale: before the first
1100 message or $ quote line the catalog can contain a line like
1102 $ codeset=ISO-8859-2
1104 to select the charset (ISO-8859-2 in this case).
1106 Implemented by Shinya Hanataka and Ulrich Drepper.
1108 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1109 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1110 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1112 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1113 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1115 * The LANGUAGE environment variable is now ignored unless the locale is
1116 changed from the default "C" locale.
1118 * The usual bug fixes.
1122 * Greg McGary added runtime support for bounds checking using gcc's
1123 new -fbounded-pointers option. ix86 target is complete. PowerPC
1126 * Thorsten Kukuk added secure mode support to nscd.
1128 * The Berkeley db libraries have been removed.
1130 Related, the nss_db module is now in a separate package since it
1131 obviously requires a database library being available.
1133 * Wide character I/O streams implemented by Ulrich Drepper.
1135 * Functions from the extended socket API added by Ulrich Drepper.
1137 * Functions feenableexcept and fedisableexcept to control the
1138 behaviour of individual exceptions have been added by Andreas Jaeger.
1140 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1142 * The resolver code has been updated from bind 8.2.3-T5B which supports
1143 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1146 This change could in some situations effect backward compatibility. Since
1147 now `_res' is a thread-local instead of a global variable, modifying it
1148 in one thread does not have any effect in other threads.
1150 The resolver library was also extended to allow IPv6 as the transport
1151 protocol for the requests. This work was done by Stig Venaas.
1153 * Compatibility code for K&R C compilers has been removed from the
1154 header files. A ISO C compiler is needed to use the library
1155 (conforming to either C89 or C99 standard).
1157 * Complete rewrite of the localedef program to support multibyte character
1158 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1159 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1160 Implemented by Ulrich Drepper.
1162 Bruno Haible significantly improved the generation and use of the data
1163 structures for the wide character tables.
1165 * Plural handling in gettext implemented by Ulrich Drepper.
1167 * The utmp daemon has been removed.
1169 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1171 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1174 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1176 * POSIX barriers implemented by Kaz Kylheku.
1178 * POSIX spawn function family implemented by Ulrich Drepper.
1180 * POSIX spinlocks are now available.
1182 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1184 * the configure option --enable-kernel=X.Y.Z allows to strip out
1185 compatibility for kernel versions before X.Y.Z. This is currently only
1186 implemented for Linux.
1188 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1189 field sin6_scope_id. This means that all programs using IPv6 should be
1190 recompiled. Don't expect binary compatibility with previous glibc
1193 * various conversion modules for IBM character sets contributed by
1196 * IA-64 port by Jes Sorensen and HJ Lu.
1210 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1212 * New xdr functions are added; some rpc functions are now 64bit clean.
1214 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1216 * Fixed known incompatibilities with glibc 2.0.
1218 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1220 * Optimized a number of functions (especially the ELF dynamic loader).
1222 * Update timezone data files.
1224 * lots of charmaps corrections
1226 * some new locale definitions and charmaps
1231 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1232 conform to POSIX member type requirements. Symbol versions have been
1233 adjusted as needed within the library, and for direct use by applications,
1234 but there is potential for problems if third-party libraries use
1235 struct timeval as part of their interface. This does not present
1236 a problem for X and other "essential" system libraries.
1238 * An additional locale model to support C++ Standard Library locale
1239 model and probably more was implemented by Ulrich Drepper.
1241 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1244 * Miles Bader provided the `argp' function family to support hierachical
1245 command line argument parsing, layered on top of getopt.
1247 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1249 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1252 * scanf recognizes the %a and %A format for scanning floating point numbers.
1254 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1255 information and interfaces for the available integer types.
1257 * about 130 new math functions were added to implement the ISO C9x math
1260 * the new header <complex.h> contains definitions of the complex math
1261 functions from ISO C 9X.
1263 * the new header <tgmath.h> defines generic macros to use complex or
1264 real valued functions.
1266 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1268 * Andreas Jaeger provided a test suite for the math library.
1270 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1272 * Ulrich Drepper added character set conversion functions (iconv).
1274 * Optimized string functions have been added.
1276 * The localedata addon is now part of glibc.
1278 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1280 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1281 daemon for NSS (nscd).
1283 Missing a better place here are some numbers on improvements. Under
1284 Linux 2.1.125 un-tar-ing the kernel sources takes
1288 using local files 12.19s 6.88s 22.91s
1290 using NIS 13.92s 8.91s 26.34s
1292 using NIS & nscd 10.37s 7.34s 25.30s
1294 using NIS+ 27.57s 30.37s 640.46s
1296 using NIS+ & nscd 10.25s 7.83s 26.51s
1298 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1300 Keep in mind that non-namelookup related operations dominate above times.
1301 It was just a common complain that using NIS+ unpacking the kernel is
1304 [1] The old nscd implementation is not available anymore since it was
1305 distributed with glibc up to version 2.0.98 and thus is now replaced.
1307 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1309 * Mark Kettenis provided a Hesiod NSS module.
1311 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1312 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1314 * rcmd can now handle netgroups (Dick Streefland).
1316 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1319 * Support for the IPv6 protocol has been added to the socket API, as per the
1320 latest draft standards.
1322 * Support for Linux 2.2 has been added.
1324 * Interface changes relative to the latest 2.0.x release:
1325 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1326 addseverity NEW: Unix98
1327 alphasort64 NEW: LFS
1328 argp_err_exit_status NEW: argp, GNU ext
1329 argp_error NEW: argp, GNU ext
1330 argp_failure NEW: argp, GNU ext
1331 argp_help NEW: argp, GNU ext
1332 argp_parse NEW: argp, GNU ext
1333 argp_program_bug_address NEW: argp, GNU ext
1334 argp_program_version NEW: argp, GNU ext
1335 argp_program_version_hook NEW: argp, GNU ext
1336 argp_state_help NEW: argp, GNU ext
1337 argp_usage NEW: argp, GNU ext
1338 authdes_create NEW: Secure RPC
1339 authdes_getucred NEW: Secure RPC
1340 authdes_pk_create NEW: Secure RPC
1341 backtrace NEW: GNU ext.
1342 backtrace_symbols NEW: GNU ext.
1343 backtrace_symbols_fd NEW: GNU ext.
1345 cacosf NEW: ISO C 9x
1346 cacosh NEW: ISO C 9x
1347 cacoshf NEW: ISO C 9x
1348 cacoshl NEW: ISO C 9x
1349 cacosl NEW: ISO C 9x
1356 casinf NEW: ISO C 9x
1357 casinh NEW: ISO C 9x
1358 casinhf NEW: ISO C 9x
1359 casinhl NEW: ISO C 9x
1360 casinl NEW: ISO C 9x
1362 catanf NEW: ISO C 9x
1363 catanh NEW: ISO C 9x
1364 catanhf NEW: ISO C 9x
1365 catanhl NEW: ISO C 9x
1366 catanl NEW: ISO C 9x
1367 cbc_crypt NEW: Secure RPC
1371 ccoshf NEW: ISO C 9x
1372 ccoshl NEW: ISO C 9x
1378 cimagf NEW: ISO C 9x
1379 cimagl NEW: ISO C 9x
1380 clearerr_locked REMOVED
1381 clntunix_create NEW: sunrpc ext
1383 clog10 NEW: ISO C 9x
1384 clog10f NEW: ISO C 9x
1385 clog10l NEW: ISO C 9x
1395 cprojf NEW: ISO C 9x
1396 cprojl NEW: ISO C 9x
1398 crealf NEW: ISO C 9x
1399 creall NEW: ISO C 9x
1404 csinhf NEW: ISO C 9x
1405 csinhl NEW: ISO C 9x
1408 csqrtf NEW: ISO C 9x
1409 csqrtl NEW: ISO C 9x
1413 ctanhf NEW: ISO C 9x
1414 ctanhl NEW: ISO C 9x
1416 des_setparity NEW: Secure RPC
1417 ecb_crypt NEW: Secure RPC
1418 endutxent NEW: Unix98
1420 exp10f NEW: ISO C 9x
1421 exp10l NEW: ISO C 9x
1425 fattach NEW: STREAMS
1426 fdetach NEW: STREAMS
1430 feclearexcept NEW: ISO C 9x
1431 fegetenv NEW: ISO C 9x
1432 fegetexceptflag NEW: ISO C 9x
1433 fegetround NEW: ISO C 9x
1434 feholdexcept NEW: ISO C 9x
1436 feraiseexcept NEW: ISO C 9x
1437 ferror_locked REMOVED
1438 fesetenv NEW: ISO C 9x
1439 fesetexceptflag NEW: ISO C 9x
1440 fesetround NEW: ISO C 9x
1441 fetestexcept NEW: ISO C 9x
1442 feupdateenv NEW: ISO C 9x
1443 fflush_locked REMOVED
1447 fgets_unlocked NEW: GNU ext.
1448 fileno_locked REMOVED
1460 fputc_locked REMOVED
1461 fputs_unlocked NEW: GNU ext.
1462 fread_unlocked NEW: GNU ext.
1467 fstatvfs NEW: Unix98
1471 ftruncate64 NEW: LFS
1473 fwrite_unlocked NEW: GNU ext.
1474 gai_strerror NEW: IPv6
1478 getchar_locked REMOVED
1480 getdate_err NEW: Unix98
1481 getdate_r NEW: GNU ext.
1483 getnameinfo NEW: IPv6
1484 getnetname NEW: Secure RPC
1485 getpmsg NEW: STREAMS
1486 getpt NEW: Unix98 PTY
1487 getrlimit64 NEW: LFS
1488 getutxent NEW: Unix98
1489 getutxid NEW: Unix98
1490 getutxline NEW: Unix98
1491 glob64 NEW: GNU ext.
1492 globfree64 NEW: GNU ext.
1493 gnu_get_libc_release NEW: GNU ext.
1494 gnu_get_libc_version NEW: GNU ext.
1495 grantpt NEW: Unix98 PTY
1496 host2netname NEW: Secure RPC
1498 iconv_close NEW: iconv
1499 iconv_open NEW: iconv
1500 if_freenameindex NEW: IPv6
1501 if_indextoname NEW: IPv6
1502 if_nameindex NEW: IPv6
1503 if_nametoindex NEW: IPv6
1504 in6addr_any NEW: IPv6
1505 in6addr_loopback NEW: IPv6
1506 inet6_isipv4mapped NEW: IPv6
1507 isastream NEW: STREAMS
1508 iswblank NEW: GNU ext.
1509 key_decryptsession NEW: Secure RPC
1510 key_decryptsession_pk NEW: Secure RPC
1511 key_encryptsession NEW: Secure RPC
1512 key_encryptsession_pk NEW: Secure RPC
1513 key_gendes NEW: Secure RPC
1514 key_get_conv NEW: Secure RPC
1515 key_secretkey_is_set NEW: Secure RPC
1516 key_setnet NEW: Secure RPC
1517 key_setsecret NEW: Secure RPC
1518 llrint NEW: ISO C 9x
1519 llrintf NEW: ISO C 9x
1520 llrintl NEW: ISO C 9x
1521 llround NEW: ISO C 9x
1522 llroundf NEW: ISO C 9x
1523 llroundl NEW: ISO C 9x
1528 lrintf NEW: ISO C 9x
1529 lrintl NEW: ISO C 9x
1530 lround NEW: ISO C 9x
1531 lroundf NEW: ISO C 9x
1532 lroundl NEW: ISO C 9x
1534 makecontext NEW: Unix98
1535 mempcpy NEW: GNU ext.
1538 modify_ldt NEW: kernel
1542 nearbyint NEW: ISO C 9x
1543 nearbyintf NEW: ISO C 9x
1544 nearbyintl NEW: ISO C 9x
1545 netname2host NEW: Secure RPC
1546 netname2user NEW: Secure RPC
1547 nexttoward NEW: ISO C 9x
1548 nexttowardf NEW: ISO C 9x
1549 nexttowardl NEW: ISO C 9x
1553 passwd2des NEW: Secure RPC
1555 pow10f NEW: GNU ext.
1556 pow10l NEW: GNU ext.
1559 printf_size NEW: GNU ext.
1560 printf_size_info NEW: GNU ext.
1561 profil_counter REMOVED
1562 pthread_mutexattr_getkind_np REPLACED
1563 pthread_mutexattr_setkind_np REPLACED
1564 ptsname NEW: Unix98 PTY
1565 ptsname_r NEW: Unix98 PTY
1567 putchar_locked REMOVED
1568 putgrent NEW: GNU ext.
1570 putpmsg NEW: STREAMS
1571 pututxline NEW: Unix98
1575 readdir64_r NEW: LFS
1576 remquo NEW: ISO C 9x
1577 remquof NEW: ISO C 9x
1578 remquol NEW: ISO C 9x
1580 roundf NEW: ISO C 9x
1581 roundl NEW: ISO C 9x
1583 scalbln NEW: ISO C 9x
1584 scalblnf NEW: ISO C 9x
1585 scalblnl NEW: ISO C 9x
1587 sendfile NEW: kernel
1588 setcontext NEW: Unix98
1589 setrlimit64 NEW: LFS
1590 setutxent NEW: Unix98
1592 sigignore NEW: Unix98
1593 sigqueue NEW: POSIX.1b
1594 sigrelse NEW: Unix98
1595 sigset NEW: POSIX.1b
1596 sigtimedwait NEW: POSIX.1b
1597 sigwaitinfo NEW: POSIX.1b
1598 sincos NEW: GNU ext.
1599 sincosf NEW: GNU ext.
1600 sincosl NEW: GNU ext.
1604 strcasestr NEW: GNU ext.
1605 strtoimax NEW: ISO C 9x
1606 strtoumax NEW: ISO C 9x
1607 strverscmp NEW: GNU ext.
1608 svcauthdes_stats NEW: Secure RPC
1609 svcunix_create NEW: sunrpc etx
1610 svcunixfd_create NEW: sunrpc ext
1611 swapcontext NEW: Unix98
1612 tcgetsid NEW: Unix98 PTY
1613 tdestroy NEW: GNU ext.
1614 tgamma NEW: ISO C 9x
1615 tgammaf NEW: ISO C 9x
1616 tgammal NEW: ISO C 9x
1620 truncf NEW: ISO C 9x
1621 truncl NEW: ISO C 9x
1623 unlockpt NEW: Unix98 PTY
1624 updwtmpx NEW: Unix98
1625 user2netname NEW: Secure RPC
1626 utmpxname NEW: Unix98
1627 versionsort NEW: GNU ext.
1628 versionsort64 NEW: GNU ext.
1630 wcscasecmp NEW: GNU ext.
1631 wcsncasecmp NEW: GNU ext.
1632 wcsnlen NEW: GNU ext.
1633 wcstoimax NEW: ISO C 9x
1634 wcstoll NEW: ISO C 9x
1635 wcstoull NEW: ISO C 9x
1636 wcstoumax NEW: ISO C 9x
1638 wordexp NEW: POSIX.2
1639 wordfree NEW: POSIX.2
1640 write_profiling REMOVED
1641 xdecrypt NEW: Secure RPC
1642 xdr_authdes_cred NEW: Secure RPC
1643 xdr_authdes_verf NEW: Secure RPC
1644 xdr_cryptkeyarg NEW: Secure RPC
1645 xdr_cryptkeyarg2 NEW: Secure RPC
1646 xdr_cryptkeyres NEW: Secure RPC
1647 xdr_getcredres NEW: Secure RPC
1648 xdr_key_netstarg NEW: Secure RPC
1649 xdr_key_netstres NEW: Secure RPC
1650 xdr_keybuf NEW: Secure RPC
1651 xdr_keystatus NEW: Secure RPC
1652 xdr_netnamestr NEW: Secure RPC
1653 xdr_sizeof NEW: Secure RPC
1654 xdr_unixcred NEW: sunrpc ext
1655 xencrypt NEW: Secure RPC
1656 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1667 * inet_ntoa is thread-safe
1669 * updwtmp is moved from libutil to libc
1671 * rewrite of cbrt function
1673 * update of timezone data
1687 * add atoll function
1689 * fix complex problems in Berkeley DB code
1691 * fix math functions
1695 * fixed lots of header problems (especially Linux/GNU specific)
1697 * dynamic loader preserves all registers
1699 * Roland McGrath provided support for handling of auxiliary objects in
1700 the ELF dynamic loader.
1702 * support for parallel builds is improved
1706 * GNU extensions are no longer declared by default. To enable them you
1707 must define the macro `_GNU_SOURCE' in your program or compile with
1710 * The library has changed from using GNU ld symbol aliases to using weak
1711 symbols where available. The ELF object file format supports weak
1712 symbols; GNU ld also supports weak symbols in the a.out format. (There
1713 is also now support for other GNU ld extensions in ELF. Use the
1714 `--with-elf' option to configure to indicate you have ELF, and
1715 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1716 of many files which contained only symbol aliases, reducing the size of
1717 the source and the compiled library; many other files were renamed to
1718 less cryptic names previously occupied by the symbol alias files.
1719 There is a new header file <elf.h> for programs which operate on
1720 files in the ELF format.
1722 * Converted to Autoconf version 2, so `configure' has more options.
1723 Run `configure --help' to see the details.
1725 * The library can now be configured to build profiling, highly-optimized
1726 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1727 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1728 `configure' enable building these extra libraries. The shared library is
1729 built by default when using both ELF and GNU ld. When shared libraries
1730 are enabled, the new library `-ldl' is available for arbitrary run-time
1731 loading of shared objects; its interface is defined in <dlfcn.h>. The
1732 new header file <link.h> gives access to the internals of the run-time
1733 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1734 application of same name on other systems and it provides information
1735 about dynamically linked binaries.
1737 * The C library now provides the run-time support code for profiling
1738 executables compiled with `-pg'. Programs can control the profiling code
1739 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1740 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1741 the support for this file format was contributed by David Mosberger-Tang.
1743 * The math code has been replaced with a math library based on fdlibm from
1744 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1745 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1746 functions. The math functions now reside in a separate library, so
1747 programs using them will need to use `-lm' their linking commands.
1749 * John C. Bowman contributed optimized ix87 assembler inline functions.
1751 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1752 mechanism similar to that found in Solaris 2. This is now used for the
1753 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1754 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1755 file controls what services are used for each individual database. This
1756 works by loading shared libraries with names specified in `nsswitch.conf',
1757 so service modules can be changed or added at any time without even
1758 relinking any program. Currently there are the file, db, and NIS based
1759 NSS services available.
1761 * The new functions `strtoq' and `strtouq' parse integer values from
1762 strings, like `strtol' and `strtoul', but they return `long long int' and
1763 `unsigned long long int' values, respectively (64-bit quantities).
1765 * The new functions `strtof' and `strtold' parse floating-point values from
1766 strings, like `strtod', but they return `float' and `long double' values,
1767 respectively (on some machines `double' and `long double' are the same).
1769 * Ulrich Drepper has contributed new implementations of the floating-point
1770 printing and reading code used in the `printf' family of functions and
1771 `strtod', `strtof', and `strtold'. These new functions are perfectly
1772 accurate, and much faster than the old ones.
1774 * The implementation of the POSIX locale model was completely rewritten by
1775 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1776 to compile the POSIX locale definition.
1778 * The former dummy implementations of the strcoll and strxfrm function are
1779 now replaced by fully functional code contributed by Ulrich Drepper. The
1780 collation information comes from the POSIX locale definitions.
1782 * The new header <langinfo.h> defines an interface for accessing
1783 various locale-dependent data (using the locale chosen with `setlocale').
1785 * Ulrich Drepper has contributed a new suite of functions for operation on
1786 wide-character and multibyte-character strings, in <wchar.h>;
1787 and classification and case conversion of wide characters, in <wctype.h>.
1788 These new functions are conforming to the ISO C, Amendement 1 specification.
1790 * There is now a second implementation of the standard I/O library available.
1791 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1792 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1794 * You can now use positional parameter specifications in format strings
1795 for the `printf' and `scanf' families of functions. For example,
1796 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1797 ``Number 6, Mr Jones''. This is mainly useful when providing different
1798 format strings for different languages, whose grammars may dictate
1799 different orderings of the values being printed. To support this
1800 feature, the interface for `register_printf_handler' has changed; see
1801 the header file <printf.h> for details.
1803 * The `printf' and `scanf' families of functions now understand a new
1804 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1805 to group numbers as indicated by the locale; for `scanf' and friends, this
1806 says to accept as valid only a number with all the proper grouping
1807 separators in the right places. In the default "C" locale, numbers are
1808 not grouped; but locales for specific countries will define the usual
1809 conventions (i.e. separate thousands with `,' in the US locale).
1811 * The pgrp functions have been regularized, slightly incompatibly but much
1812 less confusingly. The core functions are now `getpgid' and `setpgid',
1813 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1814 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1815 provided for compatibility. There is no longer an incompatible `getpgrp'
1816 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1818 * The new header file <fts.h> and suite of functions simplify programs that
1819 operate on directory trees. This code comes from 4.4 BSD.
1821 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1822 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1823 NSS scheme used in glibc.
1825 * There is a new malloc debugging hook `__memalign_hook'.
1827 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1828 `unsigned int' in <sys/types.h>. These are for compatibility only and
1829 their use is discouraged.
1831 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1832 done differently, so that it works even without GNU ld.
1834 * New function `euidaccess' checks allowed access to a file like `access',
1835 but using the effective IDs instead of the real IDs.
1837 * The time zone data files have been updated for the latest and greatest
1838 local time conventions of the countries of the world.
1840 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1843 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1844 for formatting floating-point numbers. They are provided only for
1845 compatibility; new programs should use `sprintf' instead. There are
1846 also equivalent function for the `long double' floating-point type and
1847 all functions also exist in a reentrant form.
1849 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1850 functions for maintaining the login-record files (primarily of use to
1851 system programs such as `login'), and convenient functions for
1852 allocating and initializing a pseudo-terminal (pty) device.
1854 * Ulrich Drepper has contributed new support for System V style
1855 shared memory and IPC on systems that support it.
1857 * Ulrich Drepper has contributed several miscellaneous new functions found
1858 in System V: The `hsearch' family of functions provide an effective
1859 implementation of hash tables; `a64l' and `l64a' provide a very simple
1860 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1863 * Ulrich Drepper has contributed new reentrant counterparts for the
1864 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1866 * Ulrich Drepper has contributed new, highly-optimized versions of several
1867 string functions for the i486/Pentium family of processors.
1869 * Ulrich Drepper has updated the Linux-specific code, based largely
1870 on work done in Hongjiu Lu's version of GNU libc for Linux.
1871 The GNU library now supports Linux versions 2.0.10 and later,
1872 using the ELF object file format (i[3456]86-*-linux).
1874 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1876 * David Mosberger-Tang and Richard Henderson have ported the C library
1877 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1878 dynamic linking support for ELF/Alpha.
1880 * Richard Henderson contributed several Alpha optimized assembler function
1881 for arithmetic and string handling.
1883 * Ulrich Drepper has contributed a new set of message catalog functions to
1884 support multiple languages using the <libintl.h> interface, for use with
1885 his new package GNU gettext. Translation volunteers have contributed
1886 catalogs of the library's messages in Spanish, German, and Korean.
1888 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1889 program and the `catgets' function for reading the catalog files it
1890 creates. (The <libintl.h> interface is preferred; we include the
1891 <nl_types.h> interface using `catgets' only for source compatibility with
1892 programs already written to use it.)
1894 * New header file <values.h> gives SVID-compatible names for <limits.h>
1897 * Various new macros, declarations, and small header files for compatibility
1900 * New function `group_member' is a convenient way to check if a process has
1901 a given effective group ID.
1903 * When using GCC 2.7 and later, the socket functions are now declared in a
1904 special way so that passing an argument of type `struct sockaddr_in *',
1905 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1906 `struct sockaddr *' type, does not generate a type-clash warning.
1908 * New function `error' declared in header file <error.h> is a convenient
1909 function for printing error messages and optionally exiting; this is the
1910 canonical function used in GNU programs. The new functions `err', `warn',
1911 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1912 doing the same thing.
1914 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1915 POSIX.2 `glob' function to do ~ and {...} expansion.
1917 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1918 `clearenv' which is used in POSIX.9 is also available.
1920 * New function `getsid' returns session ID number on systems that support it.
1922 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1923 files <db.h> and <mpool.h> provide a rich set of functions for several
1924 types of simple databases stored in memory and in files, and <ndbm.h> is
1925 an old `ndbm'-compatible interface using the `db' functions. Link with
1926 `-ldb' to get these functions.
1928 * New macro `strdupa' copies a string like `strdup', but uses local stack
1929 space from `alloca' instead of dynamic heap space from `malloc'.
1931 * New function `strnlen' is like `strlen' but searches only a given maximum
1932 number of characters for the null terminator. `stpncpy', `strndup' and
1933 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1936 * New function `statfs' in header <sys/statfs.h>.
1938 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1939 provide convenient functions for operating on blocks of null-terminated
1942 * A new suite of functions in <utmp.h> handle all the details of reading
1943 and writing the utmp file.
1945 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1948 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1949 completely POSIX compliant and also implemented the extended functionality
1950 to handle alternate digit representation and alternate era date formats.
1952 * Ulrich Drepper provided an implementation of the `strptime' function
1953 defined in XPG4.2 which transforms a string into a `struct tm' value.
1955 * Paul Eggert provided the tzselect shell script as part of the timezone
1956 code. The shell script makes it easy to select the correct timezone
1959 * The implementation of the malloc family of functions is completely replaced
1960 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1961 The implementation uses the mmap function (if available) and it is
1962 optimized for the use in multi threaded programs.
1964 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1965 functions. This new functionality is usable by specifying a special
1966 salt string and it is compatible with implementation on *BSD systems.
1968 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1969 `getsubopt' to handle second level command line options, `bsd_signal'
1970 to access BSD style `signal' functionality, the obsolete `regexp' style
1973 * the `lchown' function is available on system which support this
1976 * The implementation of the shadow password handling function was contributed
1979 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1981 * POSIX.1g support was added. The <sys/select.h> header is available,
1982 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1983 implementation of `getaddrinfo'.
1987 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1989 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1990 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1992 * The new function `daemon' from 4.4 BSD is useful for server programs that
1993 want to put themselves in the background.
1995 * Joel Sherrill has contributed support for several standalone boards that
1996 run without an operating system.
1998 * `printf', `scanf' and friends now accept a `q' type modifier for long
1999 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2001 * All of the code taken from BSD (notably most of the math and networking
2002 routines) has been updated from the BSD 4.4-Lite release.
2004 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2006 * The new functions `getdomainname' and `setdomainname' fetch or change the
2007 YP/NIS domain name. These are system calls which exist on systems which
2010 * The time zone data files have been updated for the latest international
2013 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2014 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2018 * The C library now includes support for Sun RPC, from Sun's free
2019 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2020 are included. (There is still no support for YP.)
2022 * Tom Quinn has contributed a port of the C library to SGI machines running
2023 Irix 4 (mips-sgi-irix4).
2025 * The new `lockf' function is a simplified interface to the locking
2026 facilities of `fcntl', included for compatibility.
2028 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2030 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2032 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2035 * The error message printed by `assert' for a failed assertion now includes
2036 the name of the program (if using GNU ld) and the name of the calling
2037 function (with versions of GCC that support this).
2039 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2041 * The library now includes the <sys/mman.h> header file and memory
2042 management functions `mmap', `munmap', `mprotect', `msync', and
2043 `madvise', on systems that support those facilities.
2045 * The interface for `mcheck' has changed slightly: the function called to
2046 abort the program when an allocation inconsistency is detected now takes
2047 an argument that indicates the type of failure. The new function
2048 `mprobe' lets you request a consistency check for a particular block at
2049 any time (checks are normally done only when you call `free' or `realloc'
2052 * It is now possible to easily cross-compile the C library, building on one
2053 system a library to run on another machine and/or operating system. All
2054 you need to do is set the variable `HOST_CC' in `configparms' to the
2055 native compiler for programs to run on the machine you are building on (a
2056 few generator programs are used on Unix systems); set `CC' to the
2059 * The new function `fexecve' (only implemented on the GNU system) executes
2060 a program file given a file descriptor already open on the file.
2064 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2065 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2067 * You can set the variable `libprefix' in `configparms' to specify a prefix
2068 to be prepended to installed library files; this makes it easy to install
2069 the GNU C library to be linked as `-lgnuc' or whatever.
2071 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2072 copies a limited number of characters from a string, and returns the
2073 address of the last character written.
2075 * You no longer need to check for whether the installed `stddef.h' is
2076 compatible with the GNU C library. configure now checks for you.
2078 * You can now define a per-stream `fileno' function to convert the
2079 stream's cookie into an integral file descriptor.
2081 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2082 allocates zero bytes of storage, and returns a unique pointer which
2083 you can pass to `realloc' or `free'. The behavior is undefined if
2084 you dereference this pointer.
2086 * The C library now runs on Sony NEWS m68k machines running either
2087 NewsOS 3 or NewsOS 4.
2089 * The new `syscall' function is a system-dependent primitive function
2090 for invoking system calls. It has the canonical behavior on Unix
2091 systems, including unreliable return values for some calls (such as
2092 `pipe', `fork' and `getppid').
2094 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2095 to `EAGAIN', which is the preferred name. On systems whose kernels
2096 use two distinct codes, the C library now translates EWOULDBLOCK to
2097 EAGAIN in every system call function.
2101 * The GNU C Library Reference Manual is now distributed with the library.
2102 `make dvi' will produce a DVI file of the printed manual.
2103 `make info' will produce Info files that you can read on line using C-h i
2104 in Emacs or the `info' program.
2105 Please send comments on the manual to bug-glibc-manual@gnu.org.
2107 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2109 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2111 * Jason Merrill has contributed a port to the Sequent Symmetry running
2112 Dynix version 3 (i386-sequent-dynix).
2114 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2115 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2117 * New function `memory_warnings' lets you arrange to get warnings when
2118 malloc is running out of memory to allocate, like Emacs gives you.
2120 * The C library now contains the relocating allocator used in Emacs 19 for
2121 its editing buffers. This allocator (ralloc) minimizes allocation
2122 overhead and fragmentation by moving allocated regions around whenever it
2123 needs to. You always refer to a ralloc'd region with a "handle" (a
2124 pointer to a pointer--an object of type `void **').
2126 * There is a new `printf' format: `%m' gives you the string corresponding
2127 to the error code in `errno'.
2129 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2130 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2131 pass, the `a' modifier says to fill in a `char **' you pass with a
2134 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2135 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2136 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2138 * `mkstemp' is a traditional Unix function to atomically create and open a
2139 uniquely-named temporary file.
2143 * The standard location for the file that says what the local timezone is
2144 has changed again. It is now `/usr/local/etc/localtime' (or more
2145 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2147 * The distribution no longer contains any files with names longer than 14
2150 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2151 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2153 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2157 * The configuration process has changed quite a bit. The `configure'
2158 script is now used just like the configuration scripts for other GNU
2159 packages. The `sysdeps' directory hierarchy is much rearranged.
2160 The file `INSTALL' explains the new scheme in detail.
2162 * The header files no longer need to be processed into ANSI C and
2163 traditional C versions. There is just one set of files to install, and
2164 it will work with ANSI or old C compilers (including `gcc -traditional').
2166 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2167 MIPS DECStation running Ultrix 4.
2169 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2170 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2171 made itself into a shared library.
2173 * Yet further improved support for the i386, running 4.3 BSD-like systems
2174 (such as Mach 3 with the Unix single-server), or System V.
2176 * New function `strncasecmp' to do case-insensitive string comparison
2177 with limited length.
2179 * New function `strsep' is a reentrant alternative to `strtok'.
2181 * New functions `scandir' and `alphasort' for searching directories.
2183 * New function `setenv' is a better interface to `putenv'.
2185 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2186 function for traversing a directory tree.
2188 * The GNU obstack package is now also part of the C library.
2189 The new function `open_obstack_stream' creates a stdio stream that
2190 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2191 formatted output directly to an obstack.
2193 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2194 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2196 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2198 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2199 things to your strings.
2201 * There are some new test programs: test-fseek, testmb, and testrand.
2203 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2204 These ports are not finished, but are a good starting place for really
2205 supporting those systems.
2207 * `/etc/localtime' is now the standard location for the file that says what
2208 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2209 This follows the general principle that `/etc' is the place for all local
2210 configuration files.
2212 * The C library header files now use `extern "C"' when used by the C++
2213 compiler, so the C library should now work with C++ code.
2215 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2216 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2219 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2220 function which uses the `merge sort' algorithm, and is said to be
2221 significantly faster than the old GNU `qsort' function. Merge sort is
2222 now the standard `qsort' function. The new algorithm can require a lot
2223 of temporary storage; so, the old sorting function is called when the
2224 required storage is not available.
2226 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2227 provides the Unix `crypt' function, plus some other entry points.
2229 * The code and header files taken from 4.4 BSD have been updated with the
2230 latest files released from Berkeley.
2232 ----------------------------------------------------------------------
2233 Copyright information:
2235 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2237 Permission is granted to anyone to make or distribute verbatim copies
2238 of this document as received, in any medium, provided that the
2239 copyright notice and this permission notice are preserved,
2240 thus giving the recipient permission to redistribute in turn.
2242 Permission is granted to distribute modified versions
2243 of this document, or of portions of it,
2244 under the above conditions, provided also that they
2245 carry prominent notices stating who last changed them.
2248 version-control: never
projects / platform / upstream / glibc.git / blob