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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.
7 \f
8 Version 2.19
10 * The following bugs are resolved with this release:
12 13985. 14155, 14699, 15427, 15522, 15531, 15532, 15640, 15736, 15748,
13 15749, 15797, 15844, 15849, 15855, 15856, 15857, 15867, 15886, 15887,
14 15890, 15892, 15893, 15895, 15897, 15905, 15909, 15921, 15939, 15966,
15 15963.
17 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
18 to the d_name member of struct dirent, or omit the terminating NUL
19 character. (Bugzilla #14699).
21 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
22 aligned_alloc functions could allocate too few bytes or corrupt the
23 heap when passed very large allocation size values (Bugzilla #15855,
24 #15856, #15857).
26 * New locales: quz_PE.
28 * Add country_car field to LC_ADDRESS, many locales.
30 * Update iso-1427.def and related occurrences.
32 * The configure option --disable-versioning has been removed. Builds with
33 --disable-versioning had not worked for several years.
35 * Update iso-639.def with Chiga (cgg) and Chinese (gan, hak, czh, cjy, lzh,
36 cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
38 \f
39 Version 2.18
41 * The following bugs are resolved with this release:
43 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
44 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
45 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
46 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
47 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
48 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
49 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
50 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
51 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
52 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
53 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
54 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
55 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
56 15759.
58 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
59 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
60 Distributions can re-enable building and using pt_chown via the new configure
61 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
62 considerable security risks and should only be used if the distribution
63 understands and accepts the risks.
65 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
66 #15078).
68 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
69 fixed (Bugzilla #15330).
71 * Add support for calling C++11 thread_local object destructors on thread
72 and program exit. This needs compiler support for offloading C++11
73 destructor calls to glibc.
75 * Improved worst case performance of libm functions with double inputs and
76 output.
78 * Support for priority inherited mutexes in pthread condition variables on
79 non-x86 architectures.
81 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
83 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
85 * Optimized string functions for ARM. Implemented by Will Newton and
86 Richard Henderson.
88 * Optimized libm functions for SPARC. Implemented by David S. Miller.
90 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
91 Richard Henderson.
93 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
94 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
96 * Added a benchmark framework to track performance of functions in glibc.
98 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
99 It is based on draft TS 18661 and currently enabled as a GNU extension.
101 * On Linux, the clock function now uses the clock_gettime system call
102 for improved precision, rather than old times system call.
104 * Added new API functions pthread_getattr_default_np and
105 pthread_setattr_default_np to get and set the default pthread
106 attributes of a process.
108 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
109 This may improve lock scaling of existing programs on TSX capable systems.
110 When the --enable-lock-elision=yes parameter is specified at configure
111 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
112 mutexes.
114 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
115 availability). Implemented by Ryan S. Arnold.
117 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
118 \f
119 Version 2.17
121 * The following bugs are resolved with this release:
123 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
124 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
125 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
126 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
127 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
128 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
129 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
130 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
131 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
132 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
133 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
134 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
135 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
136 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
137 14879, 14889, 14893, 14898, 14914.
139 * Optimization of memcpy for MIPS.
141 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
142 EMFILE has been fixed (Bugzilla #14889).
144 * The add-on ports collection is now distributed in the "ports" subdirectory
145 of the main GNU C Library distribution, rather than separately.
147 * Port to ARM AArch64 contributed by Linaro.
149 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
150 Optimized versions of memcpy, memset, and memcmp added for System z10 and
151 zEnterprise z196.
152 Implemented by Andreas Krebbel.
154 * The new function secure_getenv allows secure access to the environment,
155 returning NULL if running in a SUID/SGID process. This function replaces
156 the internal function __secure_getenv.
158 * SystemTap static probes have been added into the dynamic linker.
159 Implemented by Gary Benson.
161 * Optimizations of string functions strstr, strcasestr and memmem.
162 Implemented by Maxim Kuvyrkov.
164 * The minimum Linux kernel version that this version of the GNU C Library
165 can be used with is 2.6.16.
167 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
168 powerpc POWER7. Implemented by Will Schmidt.
170 * New configure option --disable-nscd builds the C library such that it
171 never attempts to contact the Name Service Caching Daemon (nscd).
172 New configure option --disable-build-nscd avoids building nscd itself;
173 this is the default if --disable-nscd is used.
175 * Improved support for cross-compilation, including cross-testing and
176 bootstrap builds without a previously built glibc.
178 * Several testsuite tests are now able to test multiple IFUNC variants of an
179 interface, rather than just testing the one that would be chooen by
180 default.
182 * New configure options --with-bugurl and --with-pkgversion, for
183 distributors to use to embed their bug-reporting and package version
184 information in --help and --version output.
186 * The ttyname and ttyname_r functions on Linux now fall back to searching for
187 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
188 allows creation of chroots without the procfs mounted on /proc.
190 * The `crypt' function now fails if passed salt bytes that violate the
191 specification for those values. On Linux, the `crypt' function will
192 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
193 enabled, and fail on encrypted strings using the MD5 or DES algorithm
194 when the mode is enabled.
196 * The `clock_*' suite of functions (declared in <time.h>) is now available
197 directly in the main C library. Previously it was necessary to link with
198 -lrt to use these functions. This change has the effect that a
199 single-threaded program that uses a function such as `clock_gettime' (and
200 is not linked with -lrt) will no longer implicitly load the pthreads
201 library at runtime and so will not suffer the overheads associated with
202 multi-thread support in other code such as the C++ runtime library.
204 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
205 sat_IN, and szl_PL.
206 \f
207 Version 2.16
209 * The following bugs are resolved with this release:
211 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
212 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
213 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
214 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
215 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
216 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
217 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
218 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
219 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
220 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
221 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
222 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
223 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
224 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
225 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
226 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
227 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
228 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
229 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
230 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
231 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
232 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
233 14277, 14278.
235 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
236 configuring glibc with:
237 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
238 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
239 Implemented by H.J. Lu.
241 * ISO C11 support:
243 + define static_assert
245 + do not declare gets
247 + declare at_quick_exit and quick_exit also for ISO C11
249 + aligned_alloc. NB: The code is deliberately allows the size parameter
250 to not be a multiple of the alignment. This is a moronic requirement
251 in the standard but it is only a requirement on the caller, not the
252 implementation.
254 + timespec_get added
256 + uchar.h support added
258 + CMPLX, CMPLXF, CMPLXL added
260 Implemented by Ulrich Drepper.
262 * Support for the IA-64 has been moved to ports.
264 * Remove support for anything but ELF binary format
266 * Checking versions of poll, ppoll added.
267 Implemented by Ulrich Drepper.
269 * More generic and 64-bit performance optimizations to math functions.
270 Implemented by Ulrich Drepper.
272 * New configure option --enable-obsolete-rpc makes the deprecated RPC
273 headers and functions available at compile time as they were before
274 version 2.14. This option will be removed at some time in the future
275 after the TI-RPC library becomes fully sufficient for the needs of
276 existing applications.
278 * Compatibility code for Linux kernel versions before 2.4 has been removed.
279 Note that glibc is not expected to work with any Linux kernel version
280 before 2.6.
282 * New header <sys/auxv.h> and function getauxval allowing easy access to
283 the AT_* key-value pairs passed from the Linux kernel. The header also
284 defines the HWCAP_* bits associated with the AT_HWCAP key.
286 * New locales: mag_IN
288 * New configure option --enable-systemtap builds SystemTap static probes
289 into libc for setjmp and longjmp and into libpthread for various operations.
290 So far the setjmp/longjmp probes and some of the libpthread probes are
291 provided only for i*86 and x86_64.
292 Implemented by Roland McGrath and Rayson Ho.
294 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
296 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
297 and Will Schmidt.
299 * More optimized functions for SPARC. Implemented by David S. Miller.
301 * Improved support for cross-compilation, especially bootstrap builds
302 without a previously built glibc.
304 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
305 Chris Metcalf from Tilera.
307 * Support for the old ARM ABI has been removed from ports. Only the EABI is
308 now supported for ARM processors.
310 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
311 as the name of the dynamic linker, to distinguish it from the
312 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
314 * Support for CRIS has been removed from ports.
316 * A new class of installed header has been documented for low-level
317 platform-specific functionality. PowerPC added the first instance with a
318 function to provide time base register access. Contributed by Tulio
319 Magno Quites Machado Filho.
321 * ix86 configurations now install header files that are consistent with
322 what x86-64 configurations install. These same header files can be used
323 for -m32, -m64, or -mx32 builds.
324 Contributed by H.J. Lu.
326 * Math library bug fixes. A thorough audit of all open math library bugs was
327 conducted by Joseph Myers. Significant progress was made on many math
328 library bugs resulting in more accurate exceptions and function results.
329 Many thanks to all those that contributed including Andreas Jaeger for his
330 patch review and work on the x87 trigonometric instruction issues.
332 * Timezone data is no longer installed. Timezone-related binaries and scripts
333 will continue to be installed. Users should obtain their timezone data from
334 their distribution provider or from the tzdata package at
335 <ftp://munnari.oz.au/pub/>.
336 \f
337 Version 2.15
339 * The following bugs are resolved with this release:
341 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
342 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
343 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
344 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
345 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
346 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
347 13484, 13506, 13515, 13523, 13524, 13538, 13540
349 * New program pldd to list loaded object of a process
350 Implemented by Ulrich Drepper.
352 * Add nss_db support back to glibc. No more dependency on Berkeley db
353 and support for initgroups lookups.
354 Implemented by Ulrich Drepper.
356 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
357 Contributed by HJ Lu.
359 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
360 Contributed by HJ Lu.
362 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
363 on x86-32 and x86-64.
364 Contributed by Liubov Dmitrieva.
366 * Optimized strchr and strrchr for SSE on x86-32.
367 Contributed by Liubov Dmitrieva.
369 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
370 for x86-64 and x86-32.
371 Contributed by Liubov Dmitrieva.
373 * New interfaces: scandirat, scandirat64
374 Implemented by Ulrich Drepper.
376 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
377 Implemented by Ulrich Drepper.
379 * nscd now also caches the netgroup database.
380 Implemented by Ulrich Drepper.
382 * Integrate libm with gcc's -ffinite-math-only option.
383 Implemented by Ulrich Drepper.
385 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
386 to math functions. Implemented by Ulrich Drepper.
388 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
389 Implemented by Ulrich Drepper.
391 * New Linux interfaces: process_vm_readv, process_vm_writev
393 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
394 Implemented by Ulrich Drepper.
396 * Optimized nearbyint and strcasecmp for PPC.
397 Implemented by Adhemerval Zanella.
399 * New locales: bho_IN, unm_US, es_CU, ta_LK
400 \f
401 Version 2.14
403 * The following bugs are resolved with this release:
405 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
406 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
407 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
408 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
409 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
410 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
411 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
412 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
413 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
414 12795, 12811, 12813, 12814, 12841
416 * The RPC implementation in libc is obsoleted. Old programs keep working
417 but new programs cannot be linked with the routines in libc anymore.
418 Programs in need of RPC functionality must be linked against TI-RPC.
419 The TI-RPC implementation is IPv6 enabled and there are other benefits.
421 Visible changes of this change include (obviously) the inability to link
422 programs using RPC functions without referencing the TI-RPC library and the
423 removal of the RPC headers from the glibc headers.
424 Implemented by Ulrich Drepper.
426 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
427 syncfs, setns, sendmmsg
429 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
430 yue_HK, lij_IT, mhr_RU
432 * New encodings: CP770, CP771, CP772, CP773, CP774
434 * New program sotruss to trace calls through PLTs
435 Implemented by Ulrich Drepper.
437 * The malloc hook implementation is marked deprecated and will be removed
438 from the default implementation in the next version. The design never
439 worked ever since the introduction of threads. Even programs which do
440 not create threads themselves can use multiple threads created internally.
441 \f
442 Version 2.13
444 * The following bugs are resolved with this release:
446 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
447 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
448 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
449 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
450 12378, 12394, 12397
452 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
454 * POWER7 optimizations: memset, memcmp, strncmp
456 * New optimized string functions for x86-64: strnlen (SSE2),
457 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
458 Implemented by Ulrich Drepper.
459 \f
460 Version 2.12
462 * The following bugs are resolved with this release:
464 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
465 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
466 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
467 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
468 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
469 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
470 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
471 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
473 * New interfaces: pthread_getname_np, pthread_setname_np
475 * New Linux interface: recvmmsg
477 * STT_GNU_IFUNC implemented for Sparc by David Miller.
479 * The dynamic linker now recognizes supported ABI versions from the
480 EI_ABIVERSION field in the ELF header.
481 Implemented by Ulrich Drepper.
483 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
484 will not be used to fill in password fields in the passwd.byname replies.
485 Instead it is used to synthesize the shadow.byname table, should it be
486 missing. This is a useful mode in some installations involving Solaris.
487 Implemented by Ulrich Drepper.
489 * New locales: kok_IN, sq_MK, cv_RU
490 \f
491 Version 2.11
493 * The following bugs are resolved with this release:
495 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
496 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
497 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
498 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
499 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
500 10789, 10817, 10823, 10840, 10847
502 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
503 mkostemps64
504 Implemented by Ulrich Drepper.
506 * Checking version of longjmp added that fails if an uninitialized stack
507 frame would be created. Implemented by Ulrich Drepper.
509 * STT_GNU_IFUNC is now supported in static executables.
510 Implemented by H.J. Lu.
512 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
514 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
515 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
516 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
517 Contributed by H.J. Lu.
519 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
520 Implemented by Ulrich Drepper.
522 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
523 strstr, strcasestr.
524 Contributed by H.J. Lu.
526 * Support for fma instruction in AVX on x86-64.
527 Implemented by H.J. Lu and Ulrich Drepper.
529 * AVX support in x86-64 auditing support in ld.so.
530 Implemented by H.J. Lu.
532 * STB_GNU_UNIQUE support added.
533 Implemented by Ulrich Drepper.
535 * Implement second fallback mode for optimized DNS lookup for even more
536 broken environments. If two requests from the same port are not
537 handled correctly close the socket and open a new one before sending
538 the second request. The 'single-request-reopen' option in /etc/resolv.conf
539 can be used to select this mode right away, instead of rediscovering the
540 necessity is every process again.
541 Implemented by Ulrich Drepper.
543 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
544 Implemented by Adam Tkac.
546 * Optimized iconv conversions for S390x.
547 Implemented by Andreas Krebbel.
549 * Using condvars with PI mutexes is now more efficient due to kernel
550 support for requeueing to PI futexes. NPTL support added for x86-64.
551 Implemented by Ulrich Drepper.
553 * New locales: ps_AF, my_MM
554 \f
555 Version 2.10
557 * The following bugs are resolved with this release:
559 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
560 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
561 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
562 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
563 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
565 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
566 Implemented by Ulrich Drepper.
568 * New Linux interfaces: accept4, fallocate, fallocate64.
569 Implemented by Ulrich Drepper.
571 * Correct declarations of string function when used in C++ code. This
572 could lead to compile errors for invalid C++ code.
574 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
575 now in POSIX.
577 * New POSIX 2008 interface: psiginfo
578 Implemented by Ulrich Drepper.
580 * New ISO C++1x interfaces: quick_exit, at_quick_exit
581 Implemented by Ulrich Drepper.
583 * Support for selecting between multiple function definitions at runtime
584 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
586 * The libcrypt library can now use the hash function implementations in
587 NSS. Implemented by Ulrich Drepper.
589 * The malloc implementation can be compiled to be less memory efficient
590 but higher performing in multi-threaded programs.
591 Implemented by Ulrich Drepper.
593 * New locales: nan_TW@latin, ks_IN
595 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
596 Implemented by Ulrich Drepper.
598 * Extended printf hook support. It is possible to use user-defined types
599 and extend existing format specifiers.
600 Implemented by Ulrich Drepper.
602 * Handling for group shadow files has been added.
603 Implemented by Ulrich Drepper.
605 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
606 servers (the case, e.g., for some people using the built-in DNS
607 server in ADSL modems/routers). There is a once-per-process timeout
608 in case of a broken server. To avoid it, users can run nscd or put
609 'options single-request' in /etc/resolv.conf.
610 Implemented by Ulrich Drepper.
611 \f
612 Version 2.9
614 * The following bugs are resolved with this release:
616 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
617 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
618 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
619 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
620 6968, 6974, 6980, 6995, 7008, 7009, 7029
622 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
623 up at the same time. Implemented by Ulrich Drepper.
625 * TLS descriptors for LD and GD on x86 and x86-64.
626 Implemented by Alexandre Oliva.
628 * getaddrinfo now handles DCCP and UDPlite.
629 Implemented by Ulrich Drepper.
631 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
632 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
633 Implemented by Ulrich Drepper.
635 * New implementation of memmem, strstr, and strcasestr which is O(n).
636 Implemented by Eric Blake.
638 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
640 * Implement "e" option for popen to open file descriptor with the
641 close-on-exec flag set. Implemented by Ulrich Drepper.
643 * Implement "b" mode for fmemopen. In this mode writes writes don't
644 implicitly add a NUL byte and seeks from the end of the buffer really
645 use the buffer end, not the string length as the basis.
646 Implemented by Ulrich Drepper.
648 * Many functions, exported and internal, now atomically set the close-on-exec
649 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
651 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
652 Sinhala)
653 Implemented by Pravin Satpute.
655 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
656 \f
657 Version 2.8
659 * The following bugs are resolved with this release:
661 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
662 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
663 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
664 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
665 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
666 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
667 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
669 * New locales: bo_CN, bo_IN, shs_CA.
671 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
673 * Sorting rules for some Indian languages (Devanagari and Gujarati).
674 Implemented by Pravin Satpute.
676 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
678 * nscd caches now all timeouts for DNS entries
679 Implemented by Ulrich Drepper.
681 * nscd is more efficient and wakes up less often.
682 Implemented by Ulrich Drepper.
684 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
685 vdprintf, and obstack_vprintf.
686 Implemented by Jakub Jelinek.
688 * Faster memset for x86-64.
689 Implemented by Harsha Jagasia and H.J. Lu.
691 * Faster memcpy on x86.
692 Implemented by Ulrich Drepper.
694 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
695 Implemented by Ulrich Drepper.
697 * Faster sqrt and sqrtf implemention for some PPC variants.
698 Implemented by Steven Munroe.
699 \f
700 Version 2.7
702 * The following bugs are resolved with this release:
704 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
705 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
706 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
707 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
708 5071, 5103, 5104, 5112, 5113, 5184, 5186
710 * More checking functions: fread, fread_unlocked, open*, mq_open.
711 Implemented by Jakub Jelinek and Ulrich Drepper.
713 * Extend fortification to C++. Implemented by Jakub Jelinek.
715 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
716 by not recognizing 'a' as a modifier when those specs are requested.
717 Implemented by Jakub Jelinek.
719 * PPC optimizations to math and string functions.
720 Implemented by Steven Munroe.
722 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
723 options to be passed. Implemented by Ulrich Drepper.
725 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
727 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
728 Implemented by Ulrich Drepper.
730 * Handle private futexes in the NPTL implementation.
731 Implemented by Jakub Jelinek and Ulrich Drepper.
733 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
734 Implemented by Roland McGrath and Ulrich Drepper.
736 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
738 * SHA-256 and SHA-512 based password encryption.
739 Implemented by Ulrich Drepper.
741 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
742 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
743 yo_NG.
745 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
746 Implemented by Ulrich Drepper.
747 \f
748 Version 2.6
750 * The following bugs are resolved with this release:
752 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
753 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
754 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
755 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
756 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
757 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
758 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
759 4702, 4858
761 * New Linux interfaces: epoll_pwait, sched_getcpu.
763 * New generic interfaces: strerror_l.
765 * nscd can now cache the services database. Implemented by Ulrich Drepper.
766 \f
767 Version 2.5
769 * The following bugs are resolved with this release:
771 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
772 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
773 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
774 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
775 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
776 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
777 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
778 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
779 3225, 3251, 3252, 3253, 3273
781 * For Linux, the sorting of addresses returned by getaddrinfo now also
782 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
783 Implemented by Ulrich Drepper.
785 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
786 Implemented by Ulrich Drepper.
788 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
790 * New iconv module for MIK. Contributed by Alexander Shopov.
792 * For sites with broken group and/or passwd database, the auto-propagate
793 option of nscd can prevent creating ID lookup entries from the results
794 of a name lookup and vice versa. This usually is no problem but some
795 site might have problems with the default behavior.
796 Implemented by Ulrich Drepper.
798 * Iterating over entire database in NIS can be slow. With the
799 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
800 to trade time for memory. The entire database will be read at once.
801 Implemented by Ulrich Drepper.
803 * The interfaces introduced in RFC 3542 have been implemented by
804 Ulrich Drepper.
806 * Support for the new ELF hash table format was added by Ulrich Drepper.
808 * Support for priority inheritance mutexes added by Jakub Jelinek and
809 Ulrich Drepper.
811 * Support for priority protected mutexes added by Jakub Jelinek.
813 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
814 or_IN, csb_PL, fy_NL, sr_ME.
815 \f
816 Version 2.4
818 * More overflow detection functions.
820 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
821 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
823 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
824 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
825 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
826 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
827 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
828 by Masahide Washizawa.
830 * It is now possible to install audit libraries for the dynamic linker using
831 LD_AUDIT. Implemented by Ulrich Drepper.
833 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
834 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
835 For a libc and libpthread that works well on Linux 2.4 kernels, we
836 recommend using the stable 2.3 branch.
838 * The new function open_wmemstream acts like open_memstream,
839 but uses a wchar_t wide character buffer.
841 * The new function ppoll is an improved version of poll, similar to pselect.
843 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
844 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
845 renameat, unlinkat, linkat, symlinkat, readlinkat.
847 * New Linux kernel system calls: unshare,
848 inotify_init, inotify_add_watch, inotify_rm_watch.
850 * The euidaccess function is now also known by the alias eaccess,
851 for compatibility with some other systems.
853 * Timezone data updated to 2006b version.
854 \f
855 Version 2.3.6
857 * The following bugs are resolved with this release:
859 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
860 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
861 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
862 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
863 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
864 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
866 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
868 * As of this release, GCC 4 can be used to compile the C Library.
870 * Timezone data updated to 2005m version.
871 \f
872 Version 2.3.5
874 * The following bugs are resolved with this release:
876 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
877 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
878 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
879 777, 787, 821, 822, 823, 825
881 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
882 \f
883 Version 2.3.4
885 * Support for RFC 3678. Real implementations exist only for Linux so far.
886 Implemented by Ulrich Drepper.
888 * nscd can now cache entries persistently. Expiring entries are reloaded.
889 For speedups the cache can be shared in memory with client processes.
890 Implemented by Ulrich Drepper.
892 * nscd can now perform SELinux checks.
893 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
895 * getaddrinfo queries are now cached. Canonical name lookup is performed
896 efficiently.
897 Implemented by Ulrich Drepper.
899 * The nothrow function attribute is used when headers are used by gcc when
900 compiling C code. This can avoid significant amounts of exception
901 handling data.
903 * The malloc functions perform more error checking and are stricter when
904 it comes to reacting on errors. The default action is to terminate
905 the process after showing an error message. Implemented by Ulrich Drepper.
907 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
908 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
910 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
911 namespaces using the new function dlmopen(). This feature is of course,
912 like most other dynamic loading functionality, not available in statically
913 linked applications. Implemented by Ulrich Drepper.
915 * Low-overhead boundary checking variants of string and some stdio functions
916 were added. These are to be used in conjunction with a gcc patch by
917 Jakub Jelinek which adds calls to these functions if possible.
918 Implemented by Jakub Jelinek and Ulrich Drepper.
920 * Old code for several operating systems and machine architectures that
921 have not been in working condition in a long time have been removed from
922 the main source tree maintained by the GNU C Library's maintainers.
923 These files are now reside in the separate `ports' source module
924 that is usable as an add-on when building the library.
925 \f
926 Version 2.3.3
928 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
929 interrogate the dynamic linker, compatible with the Solaris interface.
931 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
932 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
934 * getifaddrs now uses the netlink interface on Linux to get its information.
935 Implemented by Thorsten Kukuk.
937 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
938 Implemented by Ulrich Drepper.
940 * support for non-executable stacks on x86 has been added. Changes mostly
941 by Roland McGrath.
943 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
944 and Ulrich Drepper.
946 * getaddrinfo now performs destination address selection according to
947 RFC 3484.
948 \f
949 Version 2.3.2
951 * Thread-safe interfaces for many functions that access locale data
952 were added in version 2.3, but these features were omitted from NEWS.
953 Many functions have variants with an `_l' suffix that take a `locale_t'
954 object as a parameter rather than consulting the current locale.
955 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
956 create and maintain `locale_t' objects. Additionally, the new function
957 `uselocale' sets "the current locale" (as used by functions not so
958 parameterized) set for an individual thread. These features were added
959 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
961 * The functions getresuid, getresgid, setresuid, and setresgid, which
962 have long been available on Linux, are now declared in <unistd.h>
963 and are now also available on the Hurd.
965 * ELF thread-local storage support (TLS) now works on x86-64.
967 * The new dynamic string token $LIB is expanded in shared library names.
968 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
970 * Aldy Hernandez contributed complete software floating point support for
971 PowerPC machines with no FPU.
973 * fexecve is implemented on Linux.
975 * The `btowc' function should work at least twice as fast due to
976 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
978 * With approriate thread add-ons cancelable functions are now implemented
979 in libc.so as well. No need to call the function in libpthread. This
980 change allowed to finally disable the incorrect and expensive handling
981 of weak definition in ld.so.
983 * Yet more PLT entries in libc.so have been removed. We finally arrived
984 at the bare minimum. Startup times improved appropriately.
986 * Support for the new Linux/x86 system call interface was added. The
987 AT_SYSINFO auxiliary vector entry is recognized and handled.
988 \f
989 Version 2.3
991 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
992 charsets.
994 * iconv (the program and the interface) now accepts empty names (excluding
995 options like //TRANSLIT) to mean "use charset of current locale".
997 * localedef can now transliterate characters in strings which are not in
998 the provided charmap. The information from the input locale is used.
1000 * Prelinking support was added for ELF targets. This requires additional
1001 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1003 * Read-only stdio streams now use mmap to speed up operation by eliminating
1004 copying and buffer underflows. To use add 'm' to the mode string of
1005 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1007 * The malloc functions were completely rewritten by Wolfram Gloger based
1008 on Doug Lea's malloc-2.7.0.c.
1010 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1011 implementation of regex.
1013 * Bruno Haible upgraded the iconv and locale implementation to support
1014 Unicode 3.2.
1016 * Contents of the LC_* and LANG environment variables in the CEN style are
1017 not recognized anymore. It never was used. Change by Ulrich Drepper.
1019 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1020 thread-local storage (TLS) ABI on some platforms.
1021 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1023 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1024 EUC-JISX0213, and TSCII.
1026 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1027 BSD-compatible interface for getting all network interface addresses.
1028 Implementation for IPv4 by Roland McGrath.
1030 * Loading of locale data is faster due to the introduction of a locale
1031 archive. Implemented by Roland McGrath and Ulrich Drepper.
1033 * Startup times are significantly reduced by not using exported functions
1034 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1035 and Ulrich Drepper.
1037 * Steven Munroe contributed a port to PowerPC64/Linux.
1038 \f
1039 Version 2.2.6
1041 * The Hurd now uses the GNU libio implementation of stdio rather than the
1042 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1044 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1045 with the same behavior as the Linux system call of the same name.
1046 \f
1047 Version 2.2.5
1049 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1050 128-bit long double format.
1052 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1053 IBM1161, and IBM1162 charsets.
1055 * Andreas Jaeger contributed a port to x86-64/Linux.
1057 * Peter Bruin contributed a port to PowerPC/Hurd.
1059 * libc functions using I/O streams now can handle wide-oriented streams
1060 as well.
1062 * optimizations in the dynamic linker. Binaries created by recent binutils
1063 versions start up quicker due to reduced time spent on relocations.
1065 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1066 \f
1067 Version 2.2.4
1069 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1070 asinh, atanh, j0 for the 128-bit long double format.
1072 * Bruno Haible updated all the code handling Unicode in some form to
1073 support Unicode 3.1.
1075 * Speed of regex for single-byte locales is back to previous levels.
1076 Patch by Isamu Hasegawa.
1078 * Alpha, SPARC, and IA-64 now also using floating stacks.
1080 * Startup time of internationalized applications greatly improved through
1081 iconv cache. Use iconvconfig to generate the cache file.
1082 Contributed by Ulrich Drepper.
1084 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1085 severe performance problems. Patch by David Mosberger.
1087 * The Hurd port got a lot more functionality like AIO, various stdio
1088 extensions, etc. Mainly done by Roland McGrath.
1090 * mtrace can now lookup symbols in shared libraries.
1091 \f
1092 Version 2.2.3
1094 * Intel's IA-64 math library is largely integrated. It provides fast and
1095 accurate implementatations for most basic and standard math functions
1096 in float, double, and long double format.
1098 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1099 and asin for the 96-bit long double format and asin, log, tan for the
1100 128-bit long double format.
1102 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1103 The basic double functions exist today. Contributed by Abraham Ziv
1104 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1105 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1107 * An asynchronous name lookup library was added. The interface is designed
1108 after POSIX AIO. The proposal was circulated beforehand to get comments.
1109 No negative ones came in. Implemented by Ulrich Drepper.
1111 * Port to S390/64bit contributed by Martin Schwidefsky
1112 <schwidefsky@de.ibm.com>.
1114 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1115 of functions for Linux/IA-64.
1117 * The RPC code is now thread safe. Threads can now use the same service
1118 of different services at the same time. Patch by Eric Norum
1119 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1121 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1122 family of functions for Linux/S390.
1124 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1125 of functions for Linux/x86.
1127 * Port to Linux/CRIS contributed by Axis Communications.
1128 \f
1129 Version 2.2.2
1131 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1132 we can now check for namespace violations and missing declarations. The
1133 result is that almost all headers are now Unix-compliant (as defined in
1134 the upcoming XPG6). The negative side is that some programs might need
1135 corrections, too, if they depend on the incorrect form of the headers in
1136 previous versions which defined too many symbols and included too many
1137 other headers.
1139 * regex now handles multibyte character sets correctly.
1140 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1142 * iconv (the program) does now conform to the upcoming XPG6 and handles
1143 charmaps. Instead of the charset names the path of charmaps can be
1144 provided and the conversion happens based on this data.
1145 Contributed by Ulrich Drepper.
1147 * The locale program now provides detailed information about the installed
1148 locales. While
1150 locale -a
1152 only lists the names of the supported locales
1154 locale -a --verbose
1156 provides details such as country, language, and codeset name.
1157 Contributed by Ulrich Drepper.
1158 \f
1159 Version 2.2.1
1161 * The gencat program now parses the input file according to the charset
1162 selected by the LC_CTYPE category. This is important for stateful
1163 character sets. To make generating catalogs easier there is a way
1164 to overwrite the charset selected by the locale: before the first
1165 message or $ quote line the catalog can contain a line like
1167 $ codeset=ISO-8859-2
1169 to select the charset (ISO-8859-2 in this case).
1171 Implemented by Shinya Hanataka and Ulrich Drepper.
1173 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1174 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1175 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1177 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1178 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1180 * The LANGUAGE environment variable is now ignored unless the locale is
1181 changed from the default "C" locale.
1183 * The usual bug fixes.
1184 \f
1185 Version 2.2
1187 * Greg McGary added runtime support for bounds checking using gcc's
1188 new -fbounded-pointers option. ix86 target is complete. PowerPC
1189 is in progress.
1191 * Thorsten Kukuk added secure mode support to nscd.
1193 * The Berkeley db libraries have been removed.
1195 Related, the nss_db module is now in a separate package since it
1196 obviously requires a database library being available.
1198 * Wide character I/O streams implemented by Ulrich Drepper.
1200 * Functions from the extended socket API added by Ulrich Drepper.
1202 * Functions feenableexcept and fedisableexcept to control the
1203 behaviour of individual exceptions have been added by Andreas Jaeger.
1205 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1207 * The resolver code has been updated from bind 8.2.3-T5B which supports
1208 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1209 and Mark Kettenis.
1211 This change could in some situations effect backward compatibility. Since
1212 now `_res' is a thread-local instead of a global variable, modifying it
1213 in one thread does not have any effect in other threads.
1215 The resolver library was also extended to allow IPv6 as the transport
1216 protocol for the requests. This work was done by Stig Venaas.
1218 * Compatibility code for K&R C compilers has been removed from the
1219 header files. A ISO C compiler is needed to use the library
1220 (conforming to either C89 or C99 standard).
1222 * Complete rewrite of the localedef program to support multibyte character
1223 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1224 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1225 Implemented by Ulrich Drepper.
1227 Bruno Haible significantly improved the generation and use of the data
1228 structures for the wide character tables.
1230 * Plural handling in gettext implemented by Ulrich Drepper.
1232 * The utmp daemon has been removed.
1234 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1236 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1237 and Yutaka Niibe.
1239 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1241 * POSIX barriers implemented by Kaz Kylheku.
1243 * POSIX spawn function family implemented by Ulrich Drepper.
1245 * POSIX spinlocks are now available.
1247 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1249 * the configure option --enable-kernel=X.Y.Z allows to strip out
1250 compatibility for kernel versions before X.Y.Z. This is currently only
1251 implemented for Linux.
1253 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1254 field sin6_scope_id. This means that all programs using IPv6 should be
1255 recompiled. Don't expect binary compatibility with previous glibc
1256 versions.
1258 * various conversion modules for IBM character sets contributed by
1259 Masahide Washizawa.
1261 * IA-64 port by Jes Sorensen and HJ Lu.
1262 \f
1263 Version 2.1.3
1265 * bug fixes
1267 \f
1268 Version 2.1.2
1270 * bug fixes
1272 \f
1273 Version 2.1.1
1275 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1277 * New xdr functions are added; some rpc functions are now 64bit clean.
1279 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1281 * Fixed known incompatibilities with glibc 2.0.
1283 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1285 * Optimized a number of functions (especially the ELF dynamic loader).
1287 * Update timezone data files.
1289 * lots of charmaps corrections
1291 * some new locale definitions and charmaps
1293 \f
1294 Version 2.1
1296 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1297 conform to POSIX member type requirements. Symbol versions have been
1298 adjusted as needed within the library, and for direct use by applications,
1299 but there is potential for problems if third-party libraries use
1300 struct timeval as part of their interface. This does not present
1301 a problem for X and other "essential" system libraries.
1303 * An additional locale model to support C++ Standard Library locale
1304 model and probably more was implemented by Ulrich Drepper.
1306 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1307 symbol level.
1309 * Miles Bader provided the `argp' function family to support hierachical
1310 command line argument parsing, layered on top of getopt.
1312 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1314 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1315 numbers.
1317 * scanf recognizes the %a and %A format for scanning floating point numbers.
1319 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1320 information and interfaces for the available integer types.
1322 * about 130 new math functions were added to implement the ISO C9x math
1323 library.
1325 * the new header <complex.h> contains definitions of the complex math
1326 functions from ISO C 9X.
1328 * the new header <tgmath.h> defines generic macros to use complex or
1329 real valued functions.
1331 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1333 * Andreas Jaeger provided a test suite for the math library.
1335 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1337 * Ulrich Drepper added character set conversion functions (iconv).
1339 * Optimized string functions have been added.
1341 * The localedata addon is now part of glibc.
1343 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1345 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1346 daemon for NSS (nscd).
1348 Missing a better place here are some numbers on improvements. Under
1349 Linux 2.1.125 un-tar-ing the kernel sources takes
1351 user system wall
1353 using local files 12.19s 6.88s 22.91s
1355 using NIS 13.92s 8.91s 26.34s
1357 using NIS & nscd 10.37s 7.34s 25.30s
1359 using NIS+ 27.57s 30.37s 640.46s
1361 using NIS+ & nscd 10.25s 7.83s 26.51s
1363 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1365 Keep in mind that non-namelookup related operations dominate above times.
1366 It was just a common complain that using NIS+ unpacking the kernel is
1367 horribly slow.
1369 [1] The old nscd implementation is not available anymore since it was
1370 distributed with glibc up to version 2.0.98 and thus is now replaced.
1372 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1374 * Mark Kettenis provided a Hesiod NSS module.
1376 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1377 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1379 * rcmd can now handle netgroups (Dick Streefland).
1381 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1382 Bambrough.
1384 * Support for the IPv6 protocol has been added to the socket API, as per the
1385 latest draft standards.
1387 * Support for Linux 2.2 has been added.
1389 * Interface changes relative to the latest 2.0.x release:
1390 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1391 addseverity NEW: Unix98
1392 alphasort64 NEW: LFS
1393 argp_err_exit_status NEW: argp, GNU ext
1394 argp_error NEW: argp, GNU ext
1395 argp_failure NEW: argp, GNU ext
1396 argp_help NEW: argp, GNU ext
1397 argp_parse NEW: argp, GNU ext
1398 argp_program_bug_address NEW: argp, GNU ext
1399 argp_program_version NEW: argp, GNU ext
1400 argp_program_version_hook NEW: argp, GNU ext
1401 argp_state_help NEW: argp, GNU ext
1402 argp_usage NEW: argp, GNU ext
1403 authdes_create NEW: Secure RPC
1404 authdes_getucred NEW: Secure RPC
1405 authdes_pk_create NEW: Secure RPC
1406 backtrace NEW: GNU ext.
1407 backtrace_symbols NEW: GNU ext.
1408 backtrace_symbols_fd NEW: GNU ext.
1409 cacos NEW: ISO C 9x
1410 cacosf NEW: ISO C 9x
1411 cacosh NEW: ISO C 9x
1412 cacoshf NEW: ISO C 9x
1413 cacoshl NEW: ISO C 9x
1414 cacosl NEW: ISO C 9x
1415 capget NEW: kernel
1416 capset NEW: kernel
1417 carg NEW: ISO C 9x
1418 cargf NEW: ISO C 9x
1419 cargl NEW: ISO C 9x
1420 casin NEW: ISO C 9x
1421 casinf NEW: ISO C 9x
1422 casinh NEW: ISO C 9x
1423 casinhf NEW: ISO C 9x
1424 casinhl NEW: ISO C 9x
1425 casinl NEW: ISO C 9x
1426 catan NEW: ISO C 9x
1427 catanf NEW: ISO C 9x
1428 catanh NEW: ISO C 9x
1429 catanhf NEW: ISO C 9x
1430 catanhl NEW: ISO C 9x
1431 catanl NEW: ISO C 9x
1432 cbc_crypt NEW: Secure RPC
1433 ccos NEW: ISO C 9x
1434 ccosf NEW: ISO C 9x
1435 ccosh NEW: ISO C 9x
1436 ccoshf NEW: ISO C 9x
1437 ccoshl NEW: ISO C 9x
1438 ccosl NEW: ISO C 9x
1439 cexp NEW: ISO C 9x
1440 cexpf NEW: ISO C 9x
1441 cexpl NEW: ISO C 9x
1442 cimag NEW: ISO C 9x
1443 cimagf NEW: ISO C 9x
1444 cimagl NEW: ISO C 9x
1445 clearerr_locked REMOVED
1446 clntunix_create NEW: sunrpc ext
1447 clog NEW: ISO C 9x
1448 clog10 NEW: ISO C 9x
1449 clog10f NEW: ISO C 9x
1450 clog10l NEW: ISO C 9x
1451 clogf NEW: ISO C 9x
1452 clogl NEW: ISO C 9x
1453 conj NEW: ISO C 9x
1454 conjf NEW: ISO C 9x
1455 conjl NEW: ISO C 9x
1456 cpow NEW: ISO C 9x
1457 cpowf NEW: ISO C 9x
1458 cpowl NEW: ISO C 9x
1459 cproj NEW: ISO C 9x
1460 cprojf NEW: ISO C 9x
1461 cprojl NEW: ISO C 9x
1462 creal NEW: ISO C 9x
1463 crealf NEW: ISO C 9x
1464 creall NEW: ISO C 9x
1465 creat64 NEW: LFS
1466 csin NEW: ISO C 9x
1467 csinf NEW: ISO C 9x
1468 csinh NEW: ISO C 9x
1469 csinhf NEW: ISO C 9x
1470 csinhl NEW: ISO C 9x
1471 csinl NEW: ISO C 9x
1472 csqrt NEW: ISO C 9x
1473 csqrtf NEW: ISO C 9x
1474 csqrtl NEW: ISO C 9x
1475 ctan NEW: ISO C 9x
1476 ctanf NEW: ISO C 9x
1477 ctanh NEW: ISO C 9x
1478 ctanhf NEW: ISO C 9x
1479 ctanhl NEW: ISO C 9x
1480 ctanl NEW: ISO C 9x
1481 des_setparity NEW: Secure RPC
1482 ecb_crypt NEW: Secure RPC
1483 endutxent NEW: Unix98
1484 exp10 NEW: ISO C 9x
1485 exp10f NEW: ISO C 9x
1486 exp10l NEW: ISO C 9x
1487 exp2 NEW: ISO C 9x
1488 exp2f NEW: ISO C 9x
1489 exp2l NEW: ISO C 9x
1490 fattach NEW: STREAMS
1491 fdetach NEW: STREAMS
1492 fdim NEW: ISO C 9x
1493 fdimf NEW: ISO C 9x
1494 fdiml NEW: ISO C 9x
1495 feclearexcept NEW: ISO C 9x
1496 fegetenv NEW: ISO C 9x
1497 fegetexceptflag NEW: ISO C 9x
1498 fegetround NEW: ISO C 9x
1499 feholdexcept NEW: ISO C 9x
1500 feof_locked REMOVED
1501 feraiseexcept NEW: ISO C 9x
1502 ferror_locked REMOVED
1503 fesetenv NEW: ISO C 9x
1504 fesetexceptflag NEW: ISO C 9x
1505 fesetround NEW: ISO C 9x
1506 fetestexcept NEW: ISO C 9x
1507 feupdateenv NEW: ISO C 9x
1508 fflush_locked REMOVED
1509 ffsl NEW: GNU ext.
1510 ffsll NEW: GNU ext.
1511 fgetpos64 NEW: LFS
1512 fgets_unlocked NEW: GNU ext.
1513 fileno_locked REMOVED
1514 fma NEW: ISO C 9x
1515 fmaf NEW: ISO C 9x
1516 fmal NEW: ISO C 9x
1517 fmax NEW: ISO C 9x
1518 fmaxf NEW: ISO C 9x
1519 fmaxl NEW: ISO C 9x
1520 fmin NEW: ISO C 9x
1521 fminf NEW: ISO C 9x
1522 fminl NEW: ISO C 9x
1523 fmtmsg NEW: Unix98
1524 fopen64 NEW: LFS
1525 fputc_locked REMOVED
1526 fputs_unlocked NEW: GNU ext.
1527 fread_unlocked NEW: GNU ext.
1528 freopen64 NEW: LFS
1529 fseeko NEW: Unix98
1530 fsetpos64 NEW: LFS
1531 fstatfs64 NEW: LFS
1532 fstatvfs NEW: Unix98
1533 fstatvfs64 NEW: LFS
1534 ftello NEW: Unix98
1535 ftello64 NEW: LFS
1536 ftruncate64 NEW: LFS
1537 ftw64 NEW: LFS
1538 fwrite_unlocked NEW: GNU ext.
1539 gai_strerror NEW: IPv6
1540 gamma_r REMOVED
1541 gammaf_r REMOVED
1542 gammal_r REMOVED
1543 getchar_locked REMOVED
1544 getdate NEW: Unix98
1545 getdate_err NEW: Unix98
1546 getdate_r NEW: GNU ext.
1547 getmsg NEW: STREAMS
1548 getnameinfo NEW: IPv6
1549 getnetname NEW: Secure RPC
1550 getpmsg NEW: STREAMS
1551 getpt NEW: Unix98 PTY
1552 getrlimit64 NEW: LFS
1553 getutxent NEW: Unix98
1554 getutxid NEW: Unix98
1555 getutxline NEW: Unix98
1556 glob64 NEW: GNU ext.
1557 globfree64 NEW: GNU ext.
1558 gnu_get_libc_release NEW: GNU ext.
1559 gnu_get_libc_version NEW: GNU ext.
1560 grantpt NEW: Unix98 PTY
1561 host2netname NEW: Secure RPC
1562 iconv NEW: iconv
1563 iconv_close NEW: iconv
1564 iconv_open NEW: iconv
1565 if_freenameindex NEW: IPv6
1566 if_indextoname NEW: IPv6
1567 if_nameindex NEW: IPv6
1568 if_nametoindex NEW: IPv6
1569 in6addr_any NEW: IPv6
1570 in6addr_loopback NEW: IPv6
1571 inet6_isipv4mapped NEW: IPv6
1572 isastream NEW: STREAMS
1573 iswblank NEW: GNU ext.
1574 key_decryptsession NEW: Secure RPC
1575 key_decryptsession_pk NEW: Secure RPC
1576 key_encryptsession NEW: Secure RPC
1577 key_encryptsession_pk NEW: Secure RPC
1578 key_gendes NEW: Secure RPC
1579 key_get_conv NEW: Secure RPC
1580 key_secretkey_is_set NEW: Secure RPC
1581 key_setnet NEW: Secure RPC
1582 key_setsecret NEW: Secure RPC
1583 llrint NEW: ISO C 9x
1584 llrintf NEW: ISO C 9x
1585 llrintl NEW: ISO C 9x
1586 llround NEW: ISO C 9x
1587 llroundf NEW: ISO C 9x
1588 llroundl NEW: ISO C 9x
1589 log2 NEW: ISO C 9x
1590 log2f NEW: ISO C 9x
1591 log2l NEW: ISO C 9x
1592 lrint NEW: ISO C 9x
1593 lrintf NEW: ISO C 9x
1594 lrintl NEW: ISO C 9x
1595 lround NEW: ISO C 9x
1596 lroundf NEW: ISO C 9x
1597 lroundl NEW: ISO C 9x
1598 lseek64 NEW: LFS
1599 makecontext NEW: Unix98
1600 mempcpy NEW: GNU ext.
1601 mmap64 NEW: LFS
1602 moncontrol REMOVED
1603 modify_ldt NEW: kernel
1604 nan NEW: ISO C 9x
1605 nanf NEW: ISO C 9x
1606 nanl NEW: ISO C 9x
1607 nearbyint NEW: ISO C 9x
1608 nearbyintf NEW: ISO C 9x
1609 nearbyintl NEW: ISO C 9x
1610 netname2host NEW: Secure RPC
1611 netname2user NEW: Secure RPC
1612 nexttoward NEW: ISO C 9x
1613 nexttowardf NEW: ISO C 9x
1614 nexttowardl NEW: ISO C 9x
1615 nftw NEW: Unix98
1616 nftw64 NEW: LFS
1617 open64 NEW: LFS
1618 passwd2des NEW: Secure RPC
1619 pow10 NEW: GNU ext.
1620 pow10f NEW: GNU ext.
1621 pow10l NEW: GNU ext.
1622 pread NEW: Unix98
1623 pread64 NEW: LFS
1624 printf_size NEW: GNU ext.
1625 printf_size_info NEW: GNU ext.
1626 profil_counter REMOVED
1627 pthread_mutexattr_getkind_np REPLACED
1628 pthread_mutexattr_setkind_np REPLACED
1629 ptsname NEW: Unix98 PTY
1630 ptsname_r NEW: Unix98 PTY
1631 putc_locked REMOVED
1632 putchar_locked REMOVED
1633 putgrent NEW: GNU ext.
1634 putmsg NEW: STREAMS
1635 putpmsg NEW: STREAMS
1636 pututxline NEW: Unix98
1637 pwrite NEW: Unix98
1638 pwrite64 NEW: LFS
1639 readdir64 NEW: LFS
1640 readdir64_r NEW: LFS
1641 remquo NEW: ISO C 9x
1642 remquof NEW: ISO C 9x
1643 remquol NEW: ISO C 9x
1644 round NEW: ISO C 9x
1645 roundf NEW: ISO C 9x
1646 roundl NEW: ISO C 9x
1647 rtime NEW: GNU ext.
1648 scalbln NEW: ISO C 9x
1649 scalblnf NEW: ISO C 9x
1650 scalblnl NEW: ISO C 9x
1651 scandir64 NEW: LFS
1652 sendfile NEW: kernel
1653 setcontext NEW: Unix98
1654 setrlimit64 NEW: LFS
1655 setutxent NEW: Unix98
1656 sighold NEW: Unix98
1657 sigignore NEW: Unix98
1658 sigqueue NEW: POSIX.1b
1659 sigrelse NEW: Unix98
1660 sigset NEW: POSIX.1b
1661 sigtimedwait NEW: POSIX.1b
1662 sigwaitinfo NEW: POSIX.1b
1663 sincos NEW: GNU ext.
1664 sincosf NEW: GNU ext.
1665 sincosl NEW: GNU ext.
1666 statfs64 NEW: LFS
1667 statvfs NEW: Unix98
1668 statvfs64 NEW: LFS
1669 strcasestr NEW: GNU ext.
1670 strtoimax NEW: ISO C 9x
1671 strtoumax NEW: ISO C 9x
1672 strverscmp NEW: GNU ext.
1673 svcauthdes_stats NEW: Secure RPC
1674 svcunix_create NEW: sunrpc etx
1675 svcunixfd_create NEW: sunrpc ext
1676 swapcontext NEW: Unix98
1677 tcgetsid NEW: Unix98 PTY
1678 tdestroy NEW: GNU ext.
1679 tgamma NEW: ISO C 9x
1680 tgammaf NEW: ISO C 9x
1681 tgammal NEW: ISO C 9x
1682 tmpfile64 NEW: LFS
1683 trunc NEW: ISO C 9x
1684 truncate64 NEW: LFS
1685 truncf NEW: ISO C 9x
1686 truncl NEW: ISO C 9x
1687 umount2 NEW: kernel
1688 unlockpt NEW: Unix98 PTY
1689 updwtmpx NEW: Unix98
1690 user2netname NEW: Secure RPC
1691 utmpxname NEW: Unix98
1692 versionsort NEW: GNU ext.
1693 versionsort64 NEW: GNU ext.
1694 waitid NEW: Unix98
1695 wcscasecmp NEW: GNU ext.
1696 wcsncasecmp NEW: GNU ext.
1697 wcsnlen NEW: GNU ext.
1698 wcstoimax NEW: ISO C 9x
1699 wcstoll NEW: ISO C 9x
1700 wcstoull NEW: ISO C 9x
1701 wcstoumax NEW: ISO C 9x
1702 wcswcs NEW: Unix98
1703 wordexp NEW: POSIX.2
1704 wordfree NEW: POSIX.2
1705 write_profiling REMOVED
1706 xdecrypt NEW: Secure RPC
1707 xdr_authdes_cred NEW: Secure RPC
1708 xdr_authdes_verf NEW: Secure RPC
1709 xdr_cryptkeyarg NEW: Secure RPC
1710 xdr_cryptkeyarg2 NEW: Secure RPC
1711 xdr_cryptkeyres NEW: Secure RPC
1712 xdr_getcredres NEW: Secure RPC
1713 xdr_key_netstarg NEW: Secure RPC
1714 xdr_key_netstres NEW: Secure RPC
1715 xdr_keybuf NEW: Secure RPC
1716 xdr_keystatus NEW: Secure RPC
1717 xdr_netnamestr NEW: Secure RPC
1718 xdr_sizeof NEW: Secure RPC
1719 xdr_unixcred NEW: sunrpc ext
1720 xencrypt NEW: Secure RPC
1721 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1722 \f
1723 Version 2.0.6
1725 * more bug fixes
1727 \f
1728 Version 2.0.5
1730 * more bug fixes
1732 * inet_ntoa is thread-safe
1734 * updwtmp is moved from libutil to libc
1736 * rewrite of cbrt function
1738 * update of timezone data
1739 \f
1740 Version 2.0.4
1742 * more bug fixes
1743 \f
1744 Version 2.0.3
1746 * more bug fixes
1747 \f
1748 Version 2.0.2
1750 * more bug fixes
1752 * add atoll function
1754 * fix complex problems in Berkeley DB code
1756 * fix math functions
1757 \f
1758 Version 2.0.1
1760 * fixed lots of header problems (especially Linux/GNU specific)
1762 * dynamic loader preserves all registers
1764 * Roland McGrath provided support for handling of auxiliary objects in
1765 the ELF dynamic loader.
1767 * support for parallel builds is improved
1768 \f
1769 Version 2.0
1771 * GNU extensions are no longer declared by default. To enable them you
1772 must define the macro `_GNU_SOURCE' in your program or compile with
1773 `-D_GNU_SOURCE'.
1775 * The library has changed from using GNU ld symbol aliases to using weak
1776 symbols where available. The ELF object file format supports weak
1777 symbols; GNU ld also supports weak symbols in the a.out format. (There
1778 is also now support for other GNU ld extensions in ELF. Use the
1779 `--with-elf' option to configure to indicate you have ELF, and
1780 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1781 of many files which contained only symbol aliases, reducing the size of
1782 the source and the compiled library; many other files were renamed to
1783 less cryptic names previously occupied by the symbol alias files.
1784 There is a new header file <elf.h> for programs which operate on
1785 files in the ELF format.
1787 * Converted to Autoconf version 2, so `configure' has more options.
1788 Run `configure --help' to see the details.
1790 * The library can now be configured to build profiling, highly-optimized
1791 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1792 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1793 `configure' enable building these extra libraries. The shared library is
1794 built by default when using both ELF and GNU ld. When shared libraries
1795 are enabled, the new library `-ldl' is available for arbitrary run-time
1796 loading of shared objects; its interface is defined in <dlfcn.h>. The
1797 new header file <link.h> gives access to the internals of the run-time
1798 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1799 application of same name on other systems and it provides information
1800 about dynamically linked binaries.
1802 * The C library now provides the run-time support code for profiling
1803 executables compiled with `-pg'. Programs can control the profiling code
1804 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1805 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1806 the support for this file format was contributed by David Mosberger-Tang.
1808 * The math code has been replaced with a math library based on fdlibm from
1809 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1810 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1811 functions. The math functions now reside in a separate library, so
1812 programs using them will need to use `-lm' their linking commands.
1814 * John C. Bowman contributed optimized ix87 assembler inline functions.
1816 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1817 mechanism similar to that found in Solaris 2. This is now used for the
1818 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1819 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1820 file controls what services are used for each individual database. This
1821 works by loading shared libraries with names specified in `nsswitch.conf',
1822 so service modules can be changed or added at any time without even
1823 relinking any program. Currently there are the file, db, and NIS based
1824 NSS services available.
1826 * The new functions `strtoq' and `strtouq' parse integer values from
1827 strings, like `strtol' and `strtoul', but they return `long long int' and
1828 `unsigned long long int' values, respectively (64-bit quantities).
1830 * The new functions `strtof' and `strtold' parse floating-point values from
1831 strings, like `strtod', but they return `float' and `long double' values,
1832 respectively (on some machines `double' and `long double' are the same).
1834 * Ulrich Drepper has contributed new implementations of the floating-point
1835 printing and reading code used in the `printf' family of functions and
1836 `strtod', `strtof', and `strtold'. These new functions are perfectly
1837 accurate, and much faster than the old ones.
1839 * The implementation of the POSIX locale model was completely rewritten by
1840 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1841 to compile the POSIX locale definition.
1843 * The former dummy implementations of the strcoll and strxfrm function are
1844 now replaced by fully functional code contributed by Ulrich Drepper. The
1845 collation information comes from the POSIX locale definitions.
1847 * The new header <langinfo.h> defines an interface for accessing
1848 various locale-dependent data (using the locale chosen with `setlocale').
1850 * Ulrich Drepper has contributed a new suite of functions for operation on
1851 wide-character and multibyte-character strings, in <wchar.h>;
1852 and classification and case conversion of wide characters, in <wctype.h>.
1853 These new functions are conforming to the ISO C, Amendement 1 specification.
1855 * There is now a second implementation of the standard I/O library available.
1856 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1857 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1859 * You can now use positional parameter specifications in format strings
1860 for the `printf' and `scanf' families of functions. For example,
1861 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1862 ``Number 6, Mr Jones''. This is mainly useful when providing different
1863 format strings for different languages, whose grammars may dictate
1864 different orderings of the values being printed. To support this
1865 feature, the interface for `register_printf_handler' has changed; see
1866 the header file <printf.h> for details.
1868 * The `printf' and `scanf' families of functions now understand a new
1869 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1870 to group numbers as indicated by the locale; for `scanf' and friends, this
1871 says to accept as valid only a number with all the proper grouping
1872 separators in the right places. In the default "C" locale, numbers are
1873 not grouped; but locales for specific countries will define the usual
1874 conventions (i.e. separate thousands with `,' in the US locale).
1876 * The pgrp functions have been regularized, slightly incompatibly but much
1877 less confusingly. The core functions are now `getpgid' and `setpgid',
1878 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1879 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1880 provided for compatibility. There is no longer an incompatible `getpgrp'
1881 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1883 * The new header file <fts.h> and suite of functions simplify programs that
1884 operate on directory trees. This code comes from 4.4 BSD.
1886 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1887 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1888 NSS scheme used in glibc.
1890 * There is a new malloc debugging hook `__memalign_hook'.
1892 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1893 `unsigned int' in <sys/types.h>. These are for compatibility only and
1894 their use is discouraged.
1896 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1897 done differently, so that it works even without GNU ld.
1899 * New function `euidaccess' checks allowed access to a file like `access',
1900 but using the effective IDs instead of the real IDs.
1902 * The time zone data files have been updated for the latest and greatest
1903 local time conventions of the countries of the world.
1905 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1906 see <dirent.h>.
1908 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1909 for formatting floating-point numbers. They are provided only for
1910 compatibility; new programs should use `sprintf' instead. There are
1911 also equivalent function for the `long double' floating-point type and
1912 all functions also exist in a reentrant form.
1914 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1915 functions for maintaining the login-record files (primarily of use to
1916 system programs such as `login'), and convenient functions for
1917 allocating and initializing a pseudo-terminal (pty) device.
1919 * Ulrich Drepper has contributed new support for System V style
1920 shared memory and IPC on systems that support it.
1922 * Ulrich Drepper has contributed several miscellaneous new functions found
1923 in System V: The `hsearch' family of functions provide an effective
1924 implementation of hash tables; `a64l' and `l64a' provide a very simple
1925 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1926 number generator.
1928 * Ulrich Drepper has contributed new reentrant counterparts for the
1929 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1931 * Ulrich Drepper has contributed new, highly-optimized versions of several
1932 string functions for the i486/Pentium family of processors.
1934 * Ulrich Drepper has updated the Linux-specific code, based largely
1935 on work done in Hongjiu Lu's version of GNU libc for Linux.
1936 The GNU library now supports Linux versions 2.0.10 and later,
1937 using the ELF object file format (i[3456]86-*-linux).
1939 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1941 * David Mosberger-Tang and Richard Henderson have ported the C library
1942 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1943 dynamic linking support for ELF/Alpha.
1945 * Richard Henderson contributed several Alpha optimized assembler function
1946 for arithmetic and string handling.
1948 * Ulrich Drepper has contributed a new set of message catalog functions to
1949 support multiple languages using the <libintl.h> interface, for use with
1950 his new package GNU gettext. Translation volunteers have contributed
1951 catalogs of the library's messages in Spanish, German, and Korean.
1953 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1954 program and the `catgets' function for reading the catalog files it
1955 creates. (The <libintl.h> interface is preferred; we include the
1956 <nl_types.h> interface using `catgets' only for source compatibility with
1957 programs already written to use it.)
1959 * New header file <values.h> gives SVID-compatible names for <limits.h>
1960 constants.
1962 * Various new macros, declarations, and small header files for compatibility
1963 with 4.4 BSD.
1965 * New function `group_member' is a convenient way to check if a process has
1966 a given effective group ID.
1968 * When using GCC 2.7 and later, the socket functions are now declared in a
1969 special way so that passing an argument of type `struct sockaddr_in *',
1970 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1971 `struct sockaddr *' type, does not generate a type-clash warning.
1973 * New function `error' declared in header file <error.h> is a convenient
1974 function for printing error messages and optionally exiting; this is the
1975 canonical function used in GNU programs. The new functions `err', `warn',
1976 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1977 doing the same thing.
1979 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1980 POSIX.2 `glob' function to do ~ and {...} expansion.
1982 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1983 `clearenv' which is used in POSIX.9 is also available.
1985 * New function `getsid' returns session ID number on systems that support it.
1987 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1988 files <db.h> and <mpool.h> provide a rich set of functions for several
1989 types of simple databases stored in memory and in files, and <ndbm.h> is
1990 an old `ndbm'-compatible interface using the `db' functions. Link with
1991 `-ldb' to get these functions.
1993 * New macro `strdupa' copies a string like `strdup', but uses local stack
1994 space from `alloca' instead of dynamic heap space from `malloc'.
1996 * New function `strnlen' is like `strlen' but searches only a given maximum
1997 number of characters for the null terminator. `stpncpy', `strndup' and
1998 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1999 function.
2001 * New function `statfs' in header <sys/statfs.h>.
2003 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2004 provide convenient functions for operating on blocks of null-terminated
2005 strings.
2007 * A new suite of functions in <utmp.h> handle all the details of reading
2008 and writing the utmp file.
2010 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2011 Thorsten Kukuk.
2013 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2014 completely POSIX compliant and also implemented the extended functionality
2015 to handle alternate digit representation and alternate era date formats.
2017 * Ulrich Drepper provided an implementation of the `strptime' function
2018 defined in XPG4.2 which transforms a string into a `struct tm' value.
2020 * Paul Eggert provided the tzselect shell script as part of the timezone
2021 code. The shell script makes it easy to select the correct timezone
2022 specification.
2024 * The implementation of the malloc family of functions is completely replaced
2025 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2026 The implementation uses the mmap function (if available) and it is
2027 optimized for the use in multi threaded programs.
2029 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2030 functions. This new functionality is usable by specifying a special
2031 salt string and it is compatible with implementation on *BSD systems.
2033 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2034 `getsubopt' to handle second level command line options, `bsd_signal'
2035 to access BSD style `signal' functionality, the obsolete `regexp' style
2036 expression matcher.
2038 * the `lchown' function is available on system which support this
2039 functionality.
2041 * The implementation of the shadow password handling function was contributed
2042 by Ulrich Drepper.
2044 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2046 * POSIX.1g support was added. The <sys/select.h> header is available,
2047 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2048 implementation of `getaddrinfo'.
2049 \f
2050 Version 1.09
2052 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2054 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2055 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2057 * The new function `daemon' from 4.4 BSD is useful for server programs that
2058 want to put themselves in the background.
2060 * Joel Sherrill has contributed support for several standalone boards that
2061 run without an operating system.
2063 * `printf', `scanf' and friends now accept a `q' type modifier for long
2064 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2066 * All of the code taken from BSD (notably most of the math and networking
2067 routines) has been updated from the BSD 4.4-Lite release.
2069 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2071 * The new functions `getdomainname' and `setdomainname' fetch or change the
2072 YP/NIS domain name. These are system calls which exist on systems which
2073 have YP (aka NIS).
2075 * The time zone data files have been updated for the latest international
2076 conventions.
2078 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2079 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2080 \f
2081 Version 1.08
2083 * The C library now includes support for Sun RPC, from Sun's free
2084 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2085 are included. (There is still no support for YP.)
2087 * Tom Quinn has contributed a port of the C library to SGI machines running
2088 Irix 4 (mips-sgi-irix4).
2090 * The new `lockf' function is a simplified interface to the locking
2091 facilities of `fcntl', included for compatibility.
2093 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2095 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2097 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2098 compatibility.
2100 * The error message printed by `assert' for a failed assertion now includes
2101 the name of the program (if using GNU ld) and the name of the calling
2102 function (with versions of GCC that support this).
2104 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2106 * The library now includes the <sys/mman.h> header file and memory
2107 management functions `mmap', `munmap', `mprotect', `msync', and
2108 `madvise', on systems that support those facilities.
2110 * The interface for `mcheck' has changed slightly: the function called to
2111 abort the program when an allocation inconsistency is detected now takes
2112 an argument that indicates the type of failure. The new function
2113 `mprobe' lets you request a consistency check for a particular block at
2114 any time (checks are normally done only when you call `free' or `realloc'
2115 on a block).
2117 * It is now possible to easily cross-compile the C library, building on one
2118 system a library to run on another machine and/or operating system. All
2119 you need to do is set the variable `HOST_CC' in `configparms' to the
2120 native compiler for programs to run on the machine you are building on (a
2121 few generator programs are used on Unix systems); set `CC' to the
2122 cross-compiler.
2124 * The new function `fexecve' (only implemented on the GNU system) executes
2125 a program file given a file descriptor already open on the file.
2126 \f
2127 Version 1.07
2129 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2130 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2132 * You can set the variable `libprefix' in `configparms' to specify a prefix
2133 to be prepended to installed library files; this makes it easy to install
2134 the GNU C library to be linked as `-lgnuc' or whatever.
2136 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2137 copies a limited number of characters from a string, and returns the
2138 address of the last character written.
2140 * You no longer need to check for whether the installed `stddef.h' is
2141 compatible with the GNU C library. configure now checks for you.
2143 * You can now define a per-stream `fileno' function to convert the
2144 stream's cookie into an integral file descriptor.
2146 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2147 allocates zero bytes of storage, and returns a unique pointer which
2148 you can pass to `realloc' or `free'. The behavior is undefined if
2149 you dereference this pointer.
2151 * The C library now runs on Sony NEWS m68k machines running either
2152 NewsOS 3 or NewsOS 4.
2154 * The new `syscall' function is a system-dependent primitive function
2155 for invoking system calls. It has the canonical behavior on Unix
2156 systems, including unreliable return values for some calls (such as
2157 `pipe', `fork' and `getppid').
2159 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2160 to `EAGAIN', which is the preferred name. On systems whose kernels
2161 use two distinct codes, the C library now translates EWOULDBLOCK to
2162 EAGAIN in every system call function.
2163 \f
2164 Version 1.06
2166 * The GNU C Library Reference Manual is now distributed with the library.
2167 `make dvi' will produce a DVI file of the printed manual.
2168 `make info' will produce Info files that you can read on line using C-h i
2169 in Emacs or the `info' program.
2170 Please send comments on the manual to bug-glibc-manual@gnu.org.
2172 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2174 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2176 * Jason Merrill has contributed a port to the Sequent Symmetry running
2177 Dynix version 3 (i386-sequent-dynix).
2179 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2180 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2182 * New function `memory_warnings' lets you arrange to get warnings when
2183 malloc is running out of memory to allocate, like Emacs gives you.
2185 * The C library now contains the relocating allocator used in Emacs 19 for
2186 its editing buffers. This allocator (ralloc) minimizes allocation
2187 overhead and fragmentation by moving allocated regions around whenever it
2188 needs to. You always refer to a ralloc'd region with a "handle" (a
2189 pointer to a pointer--an object of type `void **').
2191 * There is a new `printf' format: `%m' gives you the string corresponding
2192 to the error code in `errno'.
2194 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2195 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2196 pass, the `a' modifier says to fill in a `char **' you pass with a
2197 malloc'd string.
2199 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2200 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2201 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2203 * `mkstemp' is a traditional Unix function to atomically create and open a
2204 uniquely-named temporary file.
2205 \f
2206 Version 1.05
2208 * The standard location for the file that says what the local timezone is
2209 has changed again. It is now `/usr/local/etc/localtime' (or more
2210 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2212 * The distribution no longer contains any files with names longer than 14
2213 characters.
2215 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2216 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2218 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2219 \f
2220 Version 1.04
2222 * The configuration process has changed quite a bit. The `configure'
2223 script is now used just like the configuration scripts for other GNU
2224 packages. The `sysdeps' directory hierarchy is much rearranged.
2225 The file `INSTALL' explains the new scheme in detail.
2227 * The header files no longer need to be processed into ANSI C and
2228 traditional C versions. There is just one set of files to install, and
2229 it will work with ANSI or old C compilers (including `gcc -traditional').
2231 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2232 MIPS DECStation running Ultrix 4.
2234 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2235 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2236 made itself into a shared library.
2238 * Yet further improved support for the i386, running 4.3 BSD-like systems
2239 (such as Mach 3 with the Unix single-server), or System V.
2241 * New function `strncasecmp' to do case-insensitive string comparison
2242 with limited length.
2244 * New function `strsep' is a reentrant alternative to `strtok'.
2246 * New functions `scandir' and `alphasort' for searching directories.
2248 * New function `setenv' is a better interface to `putenv'.
2250 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2251 function for traversing a directory tree.
2253 * The GNU obstack package is now also part of the C library.
2254 The new function `open_obstack_stream' creates a stdio stream that
2255 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2256 formatted output directly to an obstack.
2258 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2259 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2261 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2263 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2264 things to your strings.
2266 * There are some new test programs: test-fseek, testmb, and testrand.
2268 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2269 These ports are not finished, but are a good starting place for really
2270 supporting those systems.
2272 * `/etc/localtime' is now the standard location for the file that says what
2273 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2274 This follows the general principle that `/etc' is the place for all local
2275 configuration files.
2277 * The C library header files now use `extern "C"' when used by the C++
2278 compiler, so the C library should now work with C++ code.
2280 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2281 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2282 in <strings.h>.)
2284 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2285 function which uses the `merge sort' algorithm, and is said to be
2286 significantly faster than the old GNU `qsort' function. Merge sort is
2287 now the standard `qsort' function. The new algorithm can require a lot
2288 of temporary storage; so, the old sorting function is called when the
2289 required storage is not available.
2291 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2292 provides the Unix `crypt' function, plus some other entry points.
2294 * The code and header files taken from 4.4 BSD have been updated with the
2295 latest files released from Berkeley.
2296 \f
2297 ----------------------------------------------------------------------
2298 Copyright information:
2300 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2302 Permission is granted to anyone to make or distribute verbatim copies
2303 of this document as received, in any medium, provided that the
2304 copyright notice and this permission notice are preserved,
2305 thus giving the recipient permission to redistribute in turn.
2307 Permission is granted to distribute modified versions
2308 of this document, or of portions of it,
2309 under the above conditions, provided also that they
2310 carry prominent notices stating who last changed them.
2311 \f
2312 Local variables:
2313 version-control: never
2314 fill-column: 76
2315 End: