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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 14155, 14699, 15427, 15522, 15531, 15532, 15640, 15736, 15748, 15749,
13 15797, 15844, 15849, 15855, 15856, 15857, 15867, 15886, 15887, 15890,
14 15892, 15893, 15895, 15897, 15905, 15909, 15921, 15939, 15966.
16 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
17 to the d_name member of struct dirent, or omit the terminating NUL
18 character. (Bugzilla #14699).
20 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
21 aligned_alloc functions could allocate too few bytes or corrupt the
22 heap when passed very large allocation size values (Bugzilla #15855,
23 #15856, #15857).
25 * New locales: quz_PE.
27 * Add country_car field to LC_ADDRESS, many locales.
29 * Update iso-1427.def and related occurrences.
31 * The configure option --disable-versioning has been removed. Builds with
32 --disable-versioning had not worked for several years.
34 \f
35 Version 2.18
37 * The following bugs are resolved with this release:
39 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
40 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
41 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
42 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
43 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
44 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
45 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
46 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
47 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
48 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
49 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
50 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
51 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
52 15759.
54 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
55 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
56 Distributions can re-enable building and using pt_chown via the new configure
57 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
58 considerable security risks and should only be used if the distribution
59 understands and accepts the risks.
61 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
62 #15078).
64 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
65 fixed (Bugzilla #15330).
67 * Add support for calling C++11 thread_local object destructors on thread
68 and program exit. This needs compiler support for offloading C++11
69 destructor calls to glibc.
71 * Improved worst case performance of libm functions with double inputs and
72 output.
74 * Support for priority inherited mutexes in pthread condition variables on
75 non-x86 architectures.
77 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
79 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
81 * Optimized string functions for ARM. Implemented by Will Newton and
82 Richard Henderson.
84 * Optimized libm functions for SPARC. Implemented by David S. Miller.
86 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
87 Richard Henderson.
89 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
90 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
92 * Added a benchmark framework to track performance of functions in glibc.
94 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
95 It is based on draft TS 18661 and currently enabled as a GNU extension.
97 * On Linux, the clock function now uses the clock_gettime system call
98 for improved precision, rather than old times system call.
100 * Added new API functions pthread_getattr_default_np and
101 pthread_setattr_default_np to get and set the default pthread
102 attributes of a process.
104 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
105 This may improve lock scaling of existing programs on TSX capable systems.
106 When the --enable-lock-elision=yes parameter is specified at configure
107 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
108 mutexes.
110 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
111 availability). Implemented by Ryan S. Arnold.
113 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
114 \f
115 Version 2.17
117 * The following bugs are resolved with this release:
119 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
120 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
121 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
122 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
123 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
124 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
125 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
126 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
127 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
128 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
129 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
130 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
131 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
132 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
133 14879, 14889, 14893, 14898, 14914.
135 * Optimization of memcpy for MIPS.
137 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
138 EMFILE has been fixed (Bugzilla #14889).
140 * The add-on ports collection is now distributed in the "ports" subdirectory
141 of the main GNU C Library distribution, rather than separately.
143 * Port to ARM AArch64 contributed by Linaro.
145 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
146 Optimized versions of memcpy, memset, and memcmp added for System z10 and
147 zEnterprise z196.
148 Implemented by Andreas Krebbel.
150 * The new function secure_getenv allows secure access to the environment,
151 returning NULL if running in a SUID/SGID process. This function replaces
152 the internal function __secure_getenv.
154 * SystemTap static probes have been added into the dynamic linker.
155 Implemented by Gary Benson.
157 * Optimizations of string functions strstr, strcasestr and memmem.
158 Implemented by Maxim Kuvyrkov.
160 * The minimum Linux kernel version that this version of the GNU C Library
161 can be used with is 2.6.16.
163 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
164 powerpc POWER7. Implemented by Will Schmidt.
166 * New configure option --disable-nscd builds the C library such that it
167 never attempts to contact the Name Service Caching Daemon (nscd).
168 New configure option --disable-build-nscd avoids building nscd itself;
169 this is the default if --disable-nscd is used.
171 * Improved support for cross-compilation, including cross-testing and
172 bootstrap builds without a previously built glibc.
174 * Several testsuite tests are now able to test multiple IFUNC variants of an
175 interface, rather than just testing the one that would be chooen by
176 default.
178 * New configure options --with-bugurl and --with-pkgversion, for
179 distributors to use to embed their bug-reporting and package version
180 information in --help and --version output.
182 * The ttyname and ttyname_r functions on Linux now fall back to searching for
183 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
184 allows creation of chroots without the procfs mounted on /proc.
186 * The `crypt' function now fails if passed salt bytes that violate the
187 specification for those values. On Linux, the `crypt' function will
188 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
189 enabled, and fail on encrypted strings using the MD5 or DES algorithm
190 when the mode is enabled.
192 * The `clock_*' suite of functions (declared in <time.h>) is now available
193 directly in the main C library. Previously it was necessary to link with
194 -lrt to use these functions. This change has the effect that a
195 single-threaded program that uses a function such as `clock_gettime' (and
196 is not linked with -lrt) will no longer implicitly load the pthreads
197 library at runtime and so will not suffer the overheads associated with
198 multi-thread support in other code such as the C++ runtime library.
200 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
201 sat_IN, and szl_PL.
202 \f
203 Version 2.16
205 * The following bugs are resolved with this release:
207 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
208 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
209 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
210 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
211 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
212 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
213 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
214 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
215 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
216 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
217 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
218 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
219 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
220 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
221 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
222 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
223 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
224 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
225 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
226 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
227 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
228 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
229 14277, 14278.
231 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
232 configuring glibc with:
233 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
234 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
235 Implemented by H.J. Lu.
237 * ISO C11 support:
239 + define static_assert
241 + do not declare gets
243 + declare at_quick_exit and quick_exit also for ISO C11
245 + aligned_alloc. NB: The code is deliberately allows the size parameter
246 to not be a multiple of the alignment. This is a moronic requirement
247 in the standard but it is only a requirement on the caller, not the
248 implementation.
250 + timespec_get added
252 + uchar.h support added
254 + CMPLX, CMPLXF, CMPLXL added
256 Implemented by Ulrich Drepper.
258 * Support for the IA-64 has been moved to ports.
260 * Remove support for anything but ELF binary format
262 * Checking versions of poll, ppoll added.
263 Implemented by Ulrich Drepper.
265 * More generic and 64-bit performance optimizations to math functions.
266 Implemented by Ulrich Drepper.
268 * New configure option --enable-obsolete-rpc makes the deprecated RPC
269 headers and functions available at compile time as they were before
270 version 2.14. This option will be removed at some time in the future
271 after the TI-RPC library becomes fully sufficient for the needs of
272 existing applications.
274 * Compatibility code for Linux kernel versions before 2.4 has been removed.
275 Note that glibc is not expected to work with any Linux kernel version
276 before 2.6.
278 * New header <sys/auxv.h> and function getauxval allowing easy access to
279 the AT_* key-value pairs passed from the Linux kernel. The header also
280 defines the HWCAP_* bits associated with the AT_HWCAP key.
282 * New locales: mag_IN
284 * New configure option --enable-systemtap builds SystemTap static probes
285 into libc for setjmp and longjmp and into libpthread for various operations.
286 So far the setjmp/longjmp probes and some of the libpthread probes are
287 provided only for i*86 and x86_64.
288 Implemented by Roland McGrath and Rayson Ho.
290 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
292 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
293 and Will Schmidt.
295 * More optimized functions for SPARC. Implemented by David S. Miller.
297 * Improved support for cross-compilation, especially bootstrap builds
298 without a previously built glibc.
300 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
301 Chris Metcalf from Tilera.
303 * Support for the old ARM ABI has been removed from ports. Only the EABI is
304 now supported for ARM processors.
306 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
307 as the name of the dynamic linker, to distinguish it from the
308 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
310 * Support for CRIS has been removed from ports.
312 * A new class of installed header has been documented for low-level
313 platform-specific functionality. PowerPC added the first instance with a
314 function to provide time base register access. Contributed by Tulio
315 Magno Quites Machado Filho.
317 * ix86 configurations now install header files that are consistent with
318 what x86-64 configurations install. These same header files can be used
319 for -m32, -m64, or -mx32 builds.
320 Contributed by H.J. Lu.
322 * Math library bug fixes. A thorough audit of all open math library bugs was
323 conducted by Joseph Myers. Significant progress was made on many math
324 library bugs resulting in more accurate exceptions and function results.
325 Many thanks to all those that contributed including Andreas Jaeger for his
326 patch review and work on the x87 trigonometric instruction issues.
328 * Timezone data is no longer installed. Timezone-related binaries and scripts
329 will continue to be installed. Users should obtain their timezone data from
330 their distribution provider or from the tzdata package at
331 <ftp://munnari.oz.au/pub/>.
332 \f
333 Version 2.15
335 * The following bugs are resolved with this release:
337 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
338 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
339 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
340 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
341 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
342 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
343 13484, 13506, 13515, 13523, 13524, 13538, 13540
345 * New program pldd to list loaded object of a process
346 Implemented by Ulrich Drepper.
348 * Add nss_db support back to glibc. No more dependency on Berkeley db
349 and support for initgroups lookups.
350 Implemented by Ulrich Drepper.
352 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
353 Contributed by HJ Lu.
355 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
356 Contributed by HJ Lu.
358 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
359 on x86-32 and x86-64.
360 Contributed by Liubov Dmitrieva.
362 * Optimized strchr and strrchr for SSE on x86-32.
363 Contributed by Liubov Dmitrieva.
365 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
366 for x86-64 and x86-32.
367 Contributed by Liubov Dmitrieva.
369 * New interfaces: scandirat, scandirat64
370 Implemented by Ulrich Drepper.
372 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
373 Implemented by Ulrich Drepper.
375 * nscd now also caches the netgroup database.
376 Implemented by Ulrich Drepper.
378 * Integrate libm with gcc's -ffinite-math-only option.
379 Implemented by Ulrich Drepper.
381 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
382 to math functions. Implemented by Ulrich Drepper.
384 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
385 Implemented by Ulrich Drepper.
387 * New Linux interfaces: process_vm_readv, process_vm_writev
389 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
390 Implemented by Ulrich Drepper.
392 * Optimized nearbyint and strcasecmp for PPC.
393 Implemented by Adhemerval Zanella.
395 * New locales: bho_IN, unm_US, es_CU, ta_LK
396 \f
397 Version 2.14
399 * The following bugs are resolved with this release:
401 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
402 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
403 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
404 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
405 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
406 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
407 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
408 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
409 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
410 12795, 12811, 12813, 12814, 12841
412 * The RPC implementation in libc is obsoleted. Old programs keep working
413 but new programs cannot be linked with the routines in libc anymore.
414 Programs in need of RPC functionality must be linked against TI-RPC.
415 The TI-RPC implementation is IPv6 enabled and there are other benefits.
417 Visible changes of this change include (obviously) the inability to link
418 programs using RPC functions without referencing the TI-RPC library and the
419 removal of the RPC headers from the glibc headers.
420 Implemented by Ulrich Drepper.
422 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
423 syncfs, setns, sendmmsg
425 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
426 yue_HK, lij_IT, mhr_RU
428 * New encodings: CP770, CP771, CP772, CP773, CP774
430 * New program sotruss to trace calls through PLTs
431 Implemented by Ulrich Drepper.
433 * The malloc hook implementation is marked deprecated and will be removed
434 from the default implementation in the next version. The design never
435 worked ever since the introduction of threads. Even programs which do
436 not create threads themselves can use multiple threads created internally.
437 \f
438 Version 2.13
440 * The following bugs are resolved with this release:
442 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
443 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
444 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
445 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
446 12378, 12394, 12397
448 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
450 * POWER7 optimizations: memset, memcmp, strncmp
452 * New optimized string functions for x86-64: strnlen (SSE2),
453 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
454 Implemented by Ulrich Drepper.
455 \f
456 Version 2.12
458 * The following bugs are resolved with this release:
460 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
461 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
462 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
463 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
464 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
465 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
466 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
467 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
469 * New interfaces: pthread_getname_np, pthread_setname_np
471 * New Linux interface: recvmmsg
473 * STT_GNU_IFUNC implemented for Sparc by David Miller.
475 * The dynamic linker now recognizes supported ABI versions from the
476 EI_ABIVERSION field in the ELF header.
477 Implemented by Ulrich Drepper.
479 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
480 will not be used to fill in password fields in the passwd.byname replies.
481 Instead it is used to synthesize the shadow.byname table, should it be
482 missing. This is a useful mode in some installations involving Solaris.
483 Implemented by Ulrich Drepper.
485 * New locales: kok_IN, sq_MK, cv_RU
486 \f
487 Version 2.11
489 * The following bugs are resolved with this release:
491 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
492 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
493 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
494 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
495 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
496 10789, 10817, 10823, 10840, 10847
498 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
499 mkostemps64
500 Implemented by Ulrich Drepper.
502 * Checking version of longjmp added that fails if an uninitialized stack
503 frame would be created. Implemented by Ulrich Drepper.
505 * STT_GNU_IFUNC is now supported in static executables.
506 Implemented by H.J. Lu.
508 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
510 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
511 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
512 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
513 Contributed by H.J. Lu.
515 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
516 Implemented by Ulrich Drepper.
518 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
519 strstr, strcasestr.
520 Contributed by H.J. Lu.
522 * Support for fma instruction in AVX on x86-64.
523 Implemented by H.J. Lu and Ulrich Drepper.
525 * AVX support in x86-64 auditing support in ld.so.
526 Implemented by H.J. Lu.
528 * STB_GNU_UNIQUE support added.
529 Implemented by Ulrich Drepper.
531 * Implement second fallback mode for optimized DNS lookup for even more
532 broken environments. If two requests from the same port are not
533 handled correctly close the socket and open a new one before sending
534 the second request. The 'single-request-reopen' option in /etc/resolv.conf
535 can be used to select this mode right away, instead of rediscovering the
536 necessity is every process again.
537 Implemented by Ulrich Drepper.
539 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
540 Implemented by Adam Tkac.
542 * Optimized iconv conversions for S390x.
543 Implemented by Andreas Krebbel.
545 * Using condvars with PI mutexes is now more efficient due to kernel
546 support for requeueing to PI futexes. NPTL support added for x86-64.
547 Implemented by Ulrich Drepper.
549 * New locales: ps_AF, my_MM
550 \f
551 Version 2.10
553 * The following bugs are resolved with this release:
555 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
556 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
557 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
558 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
559 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
561 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
562 Implemented by Ulrich Drepper.
564 * New Linux interfaces: accept4, fallocate, fallocate64.
565 Implemented by Ulrich Drepper.
567 * Correct declarations of string function when used in C++ code. This
568 could lead to compile errors for invalid C++ code.
570 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
571 now in POSIX.
573 * New POSIX 2008 interface: psiginfo
574 Implemented by Ulrich Drepper.
576 * New ISO C++1x interfaces: quick_exit, at_quick_exit
577 Implemented by Ulrich Drepper.
579 * Support for selecting between multiple function definitions at runtime
580 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
582 * The libcrypt library can now use the hash function implementations in
583 NSS. Implemented by Ulrich Drepper.
585 * The malloc implementation can be compiled to be less memory efficient
586 but higher performing in multi-threaded programs.
587 Implemented by Ulrich Drepper.
589 * New locales: nan_TW@latin, ks_IN
591 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
592 Implemented by Ulrich Drepper.
594 * Extended printf hook support. It is possible to use user-defined types
595 and extend existing format specifiers.
596 Implemented by Ulrich Drepper.
598 * Handling for group shadow files has been added.
599 Implemented by Ulrich Drepper.
601 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
602 servers (the case, e.g., for some people using the built-in DNS
603 server in ADSL modems/routers). There is a once-per-process timeout
604 in case of a broken server. To avoid it, users can run nscd or put
605 'options single-request' in /etc/resolv.conf.
606 Implemented by Ulrich Drepper.
607 \f
608 Version 2.9
610 * The following bugs are resolved with this release:
612 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
613 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
614 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
615 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
616 6968, 6974, 6980, 6995, 7008, 7009, 7029
618 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
619 up at the same time. Implemented by Ulrich Drepper.
621 * TLS descriptors for LD and GD on x86 and x86-64.
622 Implemented by Alexandre Oliva.
624 * getaddrinfo now handles DCCP and UDPlite.
625 Implemented by Ulrich Drepper.
627 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
628 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
629 Implemented by Ulrich Drepper.
631 * New implementation of memmem, strstr, and strcasestr which is O(n).
632 Implemented by Eric Blake.
634 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
636 * Implement "e" option for popen to open file descriptor with the
637 close-on-exec flag set. Implemented by Ulrich Drepper.
639 * Implement "b" mode for fmemopen. In this mode writes writes don't
640 implicitly add a NUL byte and seeks from the end of the buffer really
641 use the buffer end, not the string length as the basis.
642 Implemented by Ulrich Drepper.
644 * Many functions, exported and internal, now atomically set the close-on-exec
645 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
647 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
648 Sinhala)
649 Implemented by Pravin Satpute.
651 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
652 \f
653 Version 2.8
655 * The following bugs are resolved with this release:
657 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
658 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
659 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
660 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
661 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
662 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
663 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
665 * New locales: bo_CN, bo_IN, shs_CA.
667 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
669 * Sorting rules for some Indian languages (Devanagari and Gujarati).
670 Implemented by Pravin Satpute.
672 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
674 * nscd caches now all timeouts for DNS entries
675 Implemented by Ulrich Drepper.
677 * nscd is more efficient and wakes up less often.
678 Implemented by Ulrich Drepper.
680 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
681 vdprintf, and obstack_vprintf.
682 Implemented by Jakub Jelinek.
684 * Faster memset for x86-64.
685 Implemented by Harsha Jagasia and H.J. Lu.
687 * Faster memcpy on x86.
688 Implemented by Ulrich Drepper.
690 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
691 Implemented by Ulrich Drepper.
693 * Faster sqrt and sqrtf implemention for some PPC variants.
694 Implemented by Steven Munroe.
695 \f
696 Version 2.7
698 * The following bugs are resolved with this release:
700 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
701 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
702 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
703 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
704 5071, 5103, 5104, 5112, 5113, 5184, 5186
706 * More checking functions: fread, fread_unlocked, open*, mq_open.
707 Implemented by Jakub Jelinek and Ulrich Drepper.
709 * Extend fortification to C++. Implemented by Jakub Jelinek.
711 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
712 by not recognizing 'a' as a modifier when those specs are requested.
713 Implemented by Jakub Jelinek.
715 * PPC optimizations to math and string functions.
716 Implemented by Steven Munroe.
718 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
719 options to be passed. Implemented by Ulrich Drepper.
721 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
723 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
724 Implemented by Ulrich Drepper.
726 * Handle private futexes in the NPTL implementation.
727 Implemented by Jakub Jelinek and Ulrich Drepper.
729 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
730 Implemented by Roland McGrath and Ulrich Drepper.
732 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
734 * SHA-256 and SHA-512 based password encryption.
735 Implemented by Ulrich Drepper.
737 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
738 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
739 yo_NG.
741 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
742 Implemented by Ulrich Drepper.
743 \f
744 Version 2.6
746 * The following bugs are resolved with this release:
748 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
749 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
750 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
751 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
752 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
753 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
754 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
755 4702, 4858
757 * New Linux interfaces: epoll_pwait, sched_getcpu.
759 * New generic interfaces: strerror_l.
761 * nscd can now cache the services database. Implemented by Ulrich Drepper.
762 \f
763 Version 2.5
765 * The following bugs are resolved with this release:
767 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
768 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
769 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
770 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
771 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
772 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
773 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
774 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
775 3225, 3251, 3252, 3253, 3273
777 * For Linux, the sorting of addresses returned by getaddrinfo now also
778 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
779 Implemented by Ulrich Drepper.
781 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
782 Implemented by Ulrich Drepper.
784 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
786 * New iconv module for MIK. Contributed by Alexander Shopov.
788 * For sites with broken group and/or passwd database, the auto-propagate
789 option of nscd can prevent creating ID lookup entries from the results
790 of a name lookup and vice versa. This usually is no problem but some
791 site might have problems with the default behavior.
792 Implemented by Ulrich Drepper.
794 * Iterating over entire database in NIS can be slow. With the
795 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
796 to trade time for memory. The entire database will be read at once.
797 Implemented by Ulrich Drepper.
799 * The interfaces introduced in RFC 3542 have been implemented by
800 Ulrich Drepper.
802 * Support for the new ELF hash table format was added by Ulrich Drepper.
804 * Support for priority inheritance mutexes added by Jakub Jelinek and
805 Ulrich Drepper.
807 * Support for priority protected mutexes added by Jakub Jelinek.
809 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
810 or_IN, csb_PL, fy_NL, sr_ME.
811 \f
812 Version 2.4
814 * More overflow detection functions.
816 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
817 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
819 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
820 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
821 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
822 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
823 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
824 by Masahide Washizawa.
826 * It is now possible to install audit libraries for the dynamic linker using
827 LD_AUDIT. Implemented by Ulrich Drepper.
829 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
830 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
831 For a libc and libpthread that works well on Linux 2.4 kernels, we
832 recommend using the stable 2.3 branch.
834 * The new function open_wmemstream acts like open_memstream,
835 but uses a wchar_t wide character buffer.
837 * The new function ppoll is an improved version of poll, similar to pselect.
839 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
840 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
841 renameat, unlinkat, linkat, symlinkat, readlinkat.
843 * New Linux kernel system calls: unshare,
844 inotify_init, inotify_add_watch, inotify_rm_watch.
846 * The euidaccess function is now also known by the alias eaccess,
847 for compatibility with some other systems.
849 * Timezone data updated to 2006b version.
850 \f
851 Version 2.3.6
853 * The following bugs are resolved with this release:
855 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
856 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
857 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
858 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
859 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
860 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
862 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
864 * As of this release, GCC 4 can be used to compile the C Library.
866 * Timezone data updated to 2005m version.
867 \f
868 Version 2.3.5
870 * The following bugs are resolved with this release:
872 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
873 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
874 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
875 777, 787, 821, 822, 823, 825
877 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
878 \f
879 Version 2.3.4
881 * Support for RFC 3678. Real implementations exist only for Linux so far.
882 Implemented by Ulrich Drepper.
884 * nscd can now cache entries persistently. Expiring entries are reloaded.
885 For speedups the cache can be shared in memory with client processes.
886 Implemented by Ulrich Drepper.
888 * nscd can now perform SELinux checks.
889 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
891 * getaddrinfo queries are now cached. Canonical name lookup is performed
892 efficiently.
893 Implemented by Ulrich Drepper.
895 * The nothrow function attribute is used when headers are used by gcc when
896 compiling C code. This can avoid significant amounts of exception
897 handling data.
899 * The malloc functions perform more error checking and are stricter when
900 it comes to reacting on errors. The default action is to terminate
901 the process after showing an error message. Implemented by Ulrich Drepper.
903 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
904 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
906 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
907 namespaces using the new function dlmopen(). This feature is of course,
908 like most other dynamic loading functionality, not available in statically
909 linked applications. Implemented by Ulrich Drepper.
911 * Low-overhead boundary checking variants of string and some stdio functions
912 were added. These are to be used in conjunction with a gcc patch by
913 Jakub Jelinek which adds calls to these functions if possible.
914 Implemented by Jakub Jelinek and Ulrich Drepper.
916 * Old code for several operating systems and machine architectures that
917 have not been in working condition in a long time have been removed from
918 the main source tree maintained by the GNU C Library's maintainers.
919 These files are now reside in the separate `ports' source module
920 that is usable as an add-on when building the library.
921 \f
922 Version 2.3.3
924 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
925 interrogate the dynamic linker, compatible with the Solaris interface.
927 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
928 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
930 * getifaddrs now uses the netlink interface on Linux to get its information.
931 Implemented by Thorsten Kukuk.
933 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
934 Implemented by Ulrich Drepper.
936 * support for non-executable stacks on x86 has been added. Changes mostly
937 by Roland McGrath.
939 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
940 and Ulrich Drepper.
942 * getaddrinfo now performs destination address selection according to
943 RFC 3484.
944 \f
945 Version 2.3.2
947 * Thread-safe interfaces for many functions that access locale data
948 were added in version 2.3, but these features were omitted from NEWS.
949 Many functions have variants with an `_l' suffix that take a `locale_t'
950 object as a parameter rather than consulting the current locale.
951 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
952 create and maintain `locale_t' objects. Additionally, the new function
953 `uselocale' sets "the current locale" (as used by functions not so
954 parameterized) set for an individual thread. These features were added
955 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
957 * The functions getresuid, getresgid, setresuid, and setresgid, which
958 have long been available on Linux, are now declared in <unistd.h>
959 and are now also available on the Hurd.
961 * ELF thread-local storage support (TLS) now works on x86-64.
963 * The new dynamic string token $LIB is expanded in shared library names.
964 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
966 * Aldy Hernandez contributed complete software floating point support for
967 PowerPC machines with no FPU.
969 * fexecve is implemented on Linux.
971 * The `btowc' function should work at least twice as fast due to
972 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
974 * With approriate thread add-ons cancelable functions are now implemented
975 in libc.so as well. No need to call the function in libpthread. This
976 change allowed to finally disable the incorrect and expensive handling
977 of weak definition in ld.so.
979 * Yet more PLT entries in libc.so have been removed. We finally arrived
980 at the bare minimum. Startup times improved appropriately.
982 * Support for the new Linux/x86 system call interface was added. The
983 AT_SYSINFO auxiliary vector entry is recognized and handled.
984 \f
985 Version 2.3
987 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
988 charsets.
990 * iconv (the program and the interface) now accepts empty names (excluding
991 options like //TRANSLIT) to mean "use charset of current locale".
993 * localedef can now transliterate characters in strings which are not in
994 the provided charmap. The information from the input locale is used.
996 * Prelinking support was added for ELF targets. This requires additional
997 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
999 * Read-only stdio streams now use mmap to speed up operation by eliminating
1000 copying and buffer underflows. To use add 'm' to the mode string of
1001 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1003 * The malloc functions were completely rewritten by Wolfram Gloger based
1004 on Doug Lea's malloc-2.7.0.c.
1006 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1007 implementation of regex.
1009 * Bruno Haible upgraded the iconv and locale implementation to support
1010 Unicode 3.2.
1012 * Contents of the LC_* and LANG environment variables in the CEN style are
1013 not recognized anymore. It never was used. Change by Ulrich Drepper.
1015 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1016 thread-local storage (TLS) ABI on some platforms.
1017 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1019 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1020 EUC-JISX0213, and TSCII.
1022 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1023 BSD-compatible interface for getting all network interface addresses.
1024 Implementation for IPv4 by Roland McGrath.
1026 * Loading of locale data is faster due to the introduction of a locale
1027 archive. Implemented by Roland McGrath and Ulrich Drepper.
1029 * Startup times are significantly reduced by not using exported functions
1030 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1031 and Ulrich Drepper.
1033 * Steven Munroe contributed a port to PowerPC64/Linux.
1034 \f
1035 Version 2.2.6
1037 * The Hurd now uses the GNU libio implementation of stdio rather than the
1038 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1040 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1041 with the same behavior as the Linux system call of the same name.
1042 \f
1043 Version 2.2.5
1045 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1046 128-bit long double format.
1048 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1049 IBM1161, and IBM1162 charsets.
1051 * Andreas Jaeger contributed a port to x86-64/Linux.
1053 * Peter Bruin contributed a port to PowerPC/Hurd.
1055 * libc functions using I/O streams now can handle wide-oriented streams
1056 as well.
1058 * optimizations in the dynamic linker. Binaries created by recent binutils
1059 versions start up quicker due to reduced time spent on relocations.
1061 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1062 \f
1063 Version 2.2.4
1065 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1066 asinh, atanh, j0 for the 128-bit long double format.
1068 * Bruno Haible updated all the code handling Unicode in some form to
1069 support Unicode 3.1.
1071 * Speed of regex for single-byte locales is back to previous levels.
1072 Patch by Isamu Hasegawa.
1074 * Alpha, SPARC, and IA-64 now also using floating stacks.
1076 * Startup time of internationalized applications greatly improved through
1077 iconv cache. Use iconvconfig to generate the cache file.
1078 Contributed by Ulrich Drepper.
1080 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1081 severe performance problems. Patch by David Mosberger.
1083 * The Hurd port got a lot more functionality like AIO, various stdio
1084 extensions, etc. Mainly done by Roland McGrath.
1086 * mtrace can now lookup symbols in shared libraries.
1087 \f
1088 Version 2.2.3
1090 * Intel's IA-64 math library is largely integrated. It provides fast and
1091 accurate implementatations for most basic and standard math functions
1092 in float, double, and long double format.
1094 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1095 and asin for the 96-bit long double format and asin, log, tan for the
1096 128-bit long double format.
1098 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1099 The basic double functions exist today. Contributed by Abraham Ziv
1100 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1101 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1103 * An asynchronous name lookup library was added. The interface is designed
1104 after POSIX AIO. The proposal was circulated beforehand to get comments.
1105 No negative ones came in. Implemented by Ulrich Drepper.
1107 * Port to S390/64bit contributed by Martin Schwidefsky
1108 <schwidefsky@de.ibm.com>.
1110 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1111 of functions for Linux/IA-64.
1113 * The RPC code is now thread safe. Threads can now use the same service
1114 of different services at the same time. Patch by Eric Norum
1115 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1117 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1118 family of functions for Linux/S390.
1120 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1121 of functions for Linux/x86.
1123 * Port to Linux/CRIS contributed by Axis Communications.
1124 \f
1125 Version 2.2.2
1127 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1128 we can now check for namespace violations and missing declarations. The
1129 result is that almost all headers are now Unix-compliant (as defined in
1130 the upcoming XPG6). The negative side is that some programs might need
1131 corrections, too, if they depend on the incorrect form of the headers in
1132 previous versions which defined too many symbols and included too many
1133 other headers.
1135 * regex now handles multibyte character sets correctly.
1136 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1138 * iconv (the program) does now conform to the upcoming XPG6 and handles
1139 charmaps. Instead of the charset names the path of charmaps can be
1140 provided and the conversion happens based on this data.
1141 Contributed by Ulrich Drepper.
1143 * The locale program now provides detailed information about the installed
1144 locales. While
1146 locale -a
1148 only lists the names of the supported locales
1150 locale -a --verbose
1152 provides details such as country, language, and codeset name.
1153 Contributed by Ulrich Drepper.
1154 \f
1155 Version 2.2.1
1157 * The gencat program now parses the input file according to the charset
1158 selected by the LC_CTYPE category. This is important for stateful
1159 character sets. To make generating catalogs easier there is a way
1160 to overwrite the charset selected by the locale: before the first
1161 message or $ quote line the catalog can contain a line like
1163 $ codeset=ISO-8859-2
1165 to select the charset (ISO-8859-2 in this case).
1167 Implemented by Shinya Hanataka and Ulrich Drepper.
1169 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1170 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1171 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1173 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1174 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1176 * The LANGUAGE environment variable is now ignored unless the locale is
1177 changed from the default "C" locale.
1179 * The usual bug fixes.
1180 \f
1181 Version 2.2
1183 * Greg McGary added runtime support for bounds checking using gcc's
1184 new -fbounded-pointers option. ix86 target is complete. PowerPC
1185 is in progress.
1187 * Thorsten Kukuk added secure mode support to nscd.
1189 * The Berkeley db libraries have been removed.
1191 Related, the nss_db module is now in a separate package since it
1192 obviously requires a database library being available.
1194 * Wide character I/O streams implemented by Ulrich Drepper.
1196 * Functions from the extended socket API added by Ulrich Drepper.
1198 * Functions feenableexcept and fedisableexcept to control the
1199 behaviour of individual exceptions have been added by Andreas Jaeger.
1201 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1203 * The resolver code has been updated from bind 8.2.3-T5B which supports
1204 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1205 and Mark Kettenis.
1207 This change could in some situations effect backward compatibility. Since
1208 now `_res' is a thread-local instead of a global variable, modifying it
1209 in one thread does not have any effect in other threads.
1211 The resolver library was also extended to allow IPv6 as the transport
1212 protocol for the requests. This work was done by Stig Venaas.
1214 * Compatibility code for K&R C compilers has been removed from the
1215 header files. A ISO C compiler is needed to use the library
1216 (conforming to either C89 or C99 standard).
1218 * Complete rewrite of the localedef program to support multibyte character
1219 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1220 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1221 Implemented by Ulrich Drepper.
1223 Bruno Haible significantly improved the generation and use of the data
1224 structures for the wide character tables.
1226 * Plural handling in gettext implemented by Ulrich Drepper.
1228 * The utmp daemon has been removed.
1230 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1232 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1233 and Yutaka Niibe.
1235 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1237 * POSIX barriers implemented by Kaz Kylheku.
1239 * POSIX spawn function family implemented by Ulrich Drepper.
1241 * POSIX spinlocks are now available.
1243 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1245 * the configure option --enable-kernel=X.Y.Z allows to strip out
1246 compatibility for kernel versions before X.Y.Z. This is currently only
1247 implemented for Linux.
1249 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1250 field sin6_scope_id. This means that all programs using IPv6 should be
1251 recompiled. Don't expect binary compatibility with previous glibc
1252 versions.
1254 * various conversion modules for IBM character sets contributed by
1255 Masahide Washizawa.
1257 * IA-64 port by Jes Sorensen and HJ Lu.
1258 \f
1259 Version 2.1.3
1261 * bug fixes
1263 \f
1264 Version 2.1.2
1266 * bug fixes
1268 \f
1269 Version 2.1.1
1271 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1273 * New xdr functions are added; some rpc functions are now 64bit clean.
1275 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1277 * Fixed known incompatibilities with glibc 2.0.
1279 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1281 * Optimized a number of functions (especially the ELF dynamic loader).
1283 * Update timezone data files.
1285 * lots of charmaps corrections
1287 * some new locale definitions and charmaps
1289 \f
1290 Version 2.1
1292 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1293 conform to POSIX member type requirements. Symbol versions have been
1294 adjusted as needed within the library, and for direct use by applications,
1295 but there is potential for problems if third-party libraries use
1296 struct timeval as part of their interface. This does not present
1297 a problem for X and other "essential" system libraries.
1299 * An additional locale model to support C++ Standard Library locale
1300 model and probably more was implemented by Ulrich Drepper.
1302 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1303 symbol level.
1305 * Miles Bader provided the `argp' function family to support hierachical
1306 command line argument parsing, layered on top of getopt.
1308 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1310 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1311 numbers.
1313 * scanf recognizes the %a and %A format for scanning floating point numbers.
1315 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1316 information and interfaces for the available integer types.
1318 * about 130 new math functions were added to implement the ISO C9x math
1319 library.
1321 * the new header <complex.h> contains definitions of the complex math
1322 functions from ISO C 9X.
1324 * the new header <tgmath.h> defines generic macros to use complex or
1325 real valued functions.
1327 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1329 * Andreas Jaeger provided a test suite for the math library.
1331 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1333 * Ulrich Drepper added character set conversion functions (iconv).
1335 * Optimized string functions have been added.
1337 * The localedata addon is now part of glibc.
1339 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1341 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1342 daemon for NSS (nscd).
1344 Missing a better place here are some numbers on improvements. Under
1345 Linux 2.1.125 un-tar-ing the kernel sources takes
1347 user system wall
1349 using local files 12.19s 6.88s 22.91s
1351 using NIS 13.92s 8.91s 26.34s
1353 using NIS & nscd 10.37s 7.34s 25.30s
1355 using NIS+ 27.57s 30.37s 640.46s
1357 using NIS+ & nscd 10.25s 7.83s 26.51s
1359 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1361 Keep in mind that non-namelookup related operations dominate above times.
1362 It was just a common complain that using NIS+ unpacking the kernel is
1363 horribly slow.
1365 [1] The old nscd implementation is not available anymore since it was
1366 distributed with glibc up to version 2.0.98 and thus is now replaced.
1368 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1370 * Mark Kettenis provided a Hesiod NSS module.
1372 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1373 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1375 * rcmd can now handle netgroups (Dick Streefland).
1377 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1378 Bambrough.
1380 * Support for the IPv6 protocol has been added to the socket API, as per the
1381 latest draft standards.
1383 * Support for Linux 2.2 has been added.
1385 * Interface changes relative to the latest 2.0.x release:
1386 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1387 addseverity NEW: Unix98
1388 alphasort64 NEW: LFS
1389 argp_err_exit_status NEW: argp, GNU ext
1390 argp_error NEW: argp, GNU ext
1391 argp_failure NEW: argp, GNU ext
1392 argp_help NEW: argp, GNU ext
1393 argp_parse NEW: argp, GNU ext
1394 argp_program_bug_address NEW: argp, GNU ext
1395 argp_program_version NEW: argp, GNU ext
1396 argp_program_version_hook NEW: argp, GNU ext
1397 argp_state_help NEW: argp, GNU ext
1398 argp_usage NEW: argp, GNU ext
1399 authdes_create NEW: Secure RPC
1400 authdes_getucred NEW: Secure RPC
1401 authdes_pk_create NEW: Secure RPC
1402 backtrace NEW: GNU ext.
1403 backtrace_symbols NEW: GNU ext.
1404 backtrace_symbols_fd NEW: GNU ext.
1405 cacos NEW: ISO C 9x
1406 cacosf NEW: ISO C 9x
1407 cacosh NEW: ISO C 9x
1408 cacoshf NEW: ISO C 9x
1409 cacoshl NEW: ISO C 9x
1410 cacosl NEW: ISO C 9x
1411 capget NEW: kernel
1412 capset NEW: kernel
1413 carg NEW: ISO C 9x
1414 cargf NEW: ISO C 9x
1415 cargl NEW: ISO C 9x
1416 casin NEW: ISO C 9x
1417 casinf NEW: ISO C 9x
1418 casinh NEW: ISO C 9x
1419 casinhf NEW: ISO C 9x
1420 casinhl NEW: ISO C 9x
1421 casinl NEW: ISO C 9x
1422 catan NEW: ISO C 9x
1423 catanf NEW: ISO C 9x
1424 catanh NEW: ISO C 9x
1425 catanhf NEW: ISO C 9x
1426 catanhl NEW: ISO C 9x
1427 catanl NEW: ISO C 9x
1428 cbc_crypt NEW: Secure RPC
1429 ccos NEW: ISO C 9x
1430 ccosf NEW: ISO C 9x
1431 ccosh NEW: ISO C 9x
1432 ccoshf NEW: ISO C 9x
1433 ccoshl NEW: ISO C 9x
1434 ccosl NEW: ISO C 9x
1435 cexp NEW: ISO C 9x
1436 cexpf NEW: ISO C 9x
1437 cexpl NEW: ISO C 9x
1438 cimag NEW: ISO C 9x
1439 cimagf NEW: ISO C 9x
1440 cimagl NEW: ISO C 9x
1441 clearerr_locked REMOVED
1442 clntunix_create NEW: sunrpc ext
1443 clog NEW: ISO C 9x
1444 clog10 NEW: ISO C 9x
1445 clog10f NEW: ISO C 9x
1446 clog10l NEW: ISO C 9x
1447 clogf NEW: ISO C 9x
1448 clogl NEW: ISO C 9x
1449 conj NEW: ISO C 9x
1450 conjf NEW: ISO C 9x
1451 conjl NEW: ISO C 9x
1452 cpow NEW: ISO C 9x
1453 cpowf NEW: ISO C 9x
1454 cpowl NEW: ISO C 9x
1455 cproj NEW: ISO C 9x
1456 cprojf NEW: ISO C 9x
1457 cprojl NEW: ISO C 9x
1458 creal NEW: ISO C 9x
1459 crealf NEW: ISO C 9x
1460 creall NEW: ISO C 9x
1461 creat64 NEW: LFS
1462 csin NEW: ISO C 9x
1463 csinf NEW: ISO C 9x
1464 csinh NEW: ISO C 9x
1465 csinhf NEW: ISO C 9x
1466 csinhl NEW: ISO C 9x
1467 csinl NEW: ISO C 9x
1468 csqrt NEW: ISO C 9x
1469 csqrtf NEW: ISO C 9x
1470 csqrtl NEW: ISO C 9x
1471 ctan NEW: ISO C 9x
1472 ctanf NEW: ISO C 9x
1473 ctanh NEW: ISO C 9x
1474 ctanhf NEW: ISO C 9x
1475 ctanhl NEW: ISO C 9x
1476 ctanl NEW: ISO C 9x
1477 des_setparity NEW: Secure RPC
1478 ecb_crypt NEW: Secure RPC
1479 endutxent NEW: Unix98
1480 exp10 NEW: ISO C 9x
1481 exp10f NEW: ISO C 9x
1482 exp10l NEW: ISO C 9x
1483 exp2 NEW: ISO C 9x
1484 exp2f NEW: ISO C 9x
1485 exp2l NEW: ISO C 9x
1486 fattach NEW: STREAMS
1487 fdetach NEW: STREAMS
1488 fdim NEW: ISO C 9x
1489 fdimf NEW: ISO C 9x
1490 fdiml NEW: ISO C 9x
1491 feclearexcept NEW: ISO C 9x
1492 fegetenv NEW: ISO C 9x
1493 fegetexceptflag NEW: ISO C 9x
1494 fegetround NEW: ISO C 9x
1495 feholdexcept NEW: ISO C 9x
1496 feof_locked REMOVED
1497 feraiseexcept NEW: ISO C 9x
1498 ferror_locked REMOVED
1499 fesetenv NEW: ISO C 9x
1500 fesetexceptflag NEW: ISO C 9x
1501 fesetround NEW: ISO C 9x
1502 fetestexcept NEW: ISO C 9x
1503 feupdateenv NEW: ISO C 9x
1504 fflush_locked REMOVED
1505 ffsl NEW: GNU ext.
1506 ffsll NEW: GNU ext.
1507 fgetpos64 NEW: LFS
1508 fgets_unlocked NEW: GNU ext.
1509 fileno_locked REMOVED
1510 fma NEW: ISO C 9x
1511 fmaf NEW: ISO C 9x
1512 fmal NEW: ISO C 9x
1513 fmax NEW: ISO C 9x
1514 fmaxf NEW: ISO C 9x
1515 fmaxl NEW: ISO C 9x
1516 fmin NEW: ISO C 9x
1517 fminf NEW: ISO C 9x
1518 fminl NEW: ISO C 9x
1519 fmtmsg NEW: Unix98
1520 fopen64 NEW: LFS
1521 fputc_locked REMOVED
1522 fputs_unlocked NEW: GNU ext.
1523 fread_unlocked NEW: GNU ext.
1524 freopen64 NEW: LFS
1525 fseeko NEW: Unix98
1526 fsetpos64 NEW: LFS
1527 fstatfs64 NEW: LFS
1528 fstatvfs NEW: Unix98
1529 fstatvfs64 NEW: LFS
1530 ftello NEW: Unix98
1531 ftello64 NEW: LFS
1532 ftruncate64 NEW: LFS
1533 ftw64 NEW: LFS
1534 fwrite_unlocked NEW: GNU ext.
1535 gai_strerror NEW: IPv6
1536 gamma_r REMOVED
1537 gammaf_r REMOVED
1538 gammal_r REMOVED
1539 getchar_locked REMOVED
1540 getdate NEW: Unix98
1541 getdate_err NEW: Unix98
1542 getdate_r NEW: GNU ext.
1543 getmsg NEW: STREAMS
1544 getnameinfo NEW: IPv6
1545 getnetname NEW: Secure RPC
1546 getpmsg NEW: STREAMS
1547 getpt NEW: Unix98 PTY
1548 getrlimit64 NEW: LFS
1549 getutxent NEW: Unix98
1550 getutxid NEW: Unix98
1551 getutxline NEW: Unix98
1552 glob64 NEW: GNU ext.
1553 globfree64 NEW: GNU ext.
1554 gnu_get_libc_release NEW: GNU ext.
1555 gnu_get_libc_version NEW: GNU ext.
1556 grantpt NEW: Unix98 PTY
1557 host2netname NEW: Secure RPC
1558 iconv NEW: iconv
1559 iconv_close NEW: iconv
1560 iconv_open NEW: iconv
1561 if_freenameindex NEW: IPv6
1562 if_indextoname NEW: IPv6
1563 if_nameindex NEW: IPv6
1564 if_nametoindex NEW: IPv6
1565 in6addr_any NEW: IPv6
1566 in6addr_loopback NEW: IPv6
1567 inet6_isipv4mapped NEW: IPv6
1568 isastream NEW: STREAMS
1569 iswblank NEW: GNU ext.
1570 key_decryptsession NEW: Secure RPC
1571 key_decryptsession_pk NEW: Secure RPC
1572 key_encryptsession NEW: Secure RPC
1573 key_encryptsession_pk NEW: Secure RPC
1574 key_gendes NEW: Secure RPC
1575 key_get_conv NEW: Secure RPC
1576 key_secretkey_is_set NEW: Secure RPC
1577 key_setnet NEW: Secure RPC
1578 key_setsecret NEW: Secure RPC
1579 llrint NEW: ISO C 9x
1580 llrintf NEW: ISO C 9x
1581 llrintl NEW: ISO C 9x
1582 llround NEW: ISO C 9x
1583 llroundf NEW: ISO C 9x
1584 llroundl NEW: ISO C 9x
1585 log2 NEW: ISO C 9x
1586 log2f NEW: ISO C 9x
1587 log2l NEW: ISO C 9x
1588 lrint NEW: ISO C 9x
1589 lrintf NEW: ISO C 9x
1590 lrintl NEW: ISO C 9x
1591 lround NEW: ISO C 9x
1592 lroundf NEW: ISO C 9x
1593 lroundl NEW: ISO C 9x
1594 lseek64 NEW: LFS
1595 makecontext NEW: Unix98
1596 mempcpy NEW: GNU ext.
1597 mmap64 NEW: LFS
1598 moncontrol REMOVED
1599 modify_ldt NEW: kernel
1600 nan NEW: ISO C 9x
1601 nanf NEW: ISO C 9x
1602 nanl NEW: ISO C 9x
1603 nearbyint NEW: ISO C 9x
1604 nearbyintf NEW: ISO C 9x
1605 nearbyintl NEW: ISO C 9x
1606 netname2host NEW: Secure RPC
1607 netname2user NEW: Secure RPC
1608 nexttoward NEW: ISO C 9x
1609 nexttowardf NEW: ISO C 9x
1610 nexttowardl NEW: ISO C 9x
1611 nftw NEW: Unix98
1612 nftw64 NEW: LFS
1613 open64 NEW: LFS
1614 passwd2des NEW: Secure RPC
1615 pow10 NEW: GNU ext.
1616 pow10f NEW: GNU ext.
1617 pow10l NEW: GNU ext.
1618 pread NEW: Unix98
1619 pread64 NEW: LFS
1620 printf_size NEW: GNU ext.
1621 printf_size_info NEW: GNU ext.
1622 profil_counter REMOVED
1623 pthread_mutexattr_getkind_np REPLACED
1624 pthread_mutexattr_setkind_np REPLACED
1625 ptsname NEW: Unix98 PTY
1626 ptsname_r NEW: Unix98 PTY
1627 putc_locked REMOVED
1628 putchar_locked REMOVED
1629 putgrent NEW: GNU ext.
1630 putmsg NEW: STREAMS
1631 putpmsg NEW: STREAMS
1632 pututxline NEW: Unix98
1633 pwrite NEW: Unix98
1634 pwrite64 NEW: LFS
1635 readdir64 NEW: LFS
1636 readdir64_r NEW: LFS
1637 remquo NEW: ISO C 9x
1638 remquof NEW: ISO C 9x
1639 remquol NEW: ISO C 9x
1640 round NEW: ISO C 9x
1641 roundf NEW: ISO C 9x
1642 roundl NEW: ISO C 9x
1643 rtime NEW: GNU ext.
1644 scalbln NEW: ISO C 9x
1645 scalblnf NEW: ISO C 9x
1646 scalblnl NEW: ISO C 9x
1647 scandir64 NEW: LFS
1648 sendfile NEW: kernel
1649 setcontext NEW: Unix98
1650 setrlimit64 NEW: LFS
1651 setutxent NEW: Unix98
1652 sighold NEW: Unix98
1653 sigignore NEW: Unix98
1654 sigqueue NEW: POSIX.1b
1655 sigrelse NEW: Unix98
1656 sigset NEW: POSIX.1b
1657 sigtimedwait NEW: POSIX.1b
1658 sigwaitinfo NEW: POSIX.1b
1659 sincos NEW: GNU ext.
1660 sincosf NEW: GNU ext.
1661 sincosl NEW: GNU ext.
1662 statfs64 NEW: LFS
1663 statvfs NEW: Unix98
1664 statvfs64 NEW: LFS
1665 strcasestr NEW: GNU ext.
1666 strtoimax NEW: ISO C 9x
1667 strtoumax NEW: ISO C 9x
1668 strverscmp NEW: GNU ext.
1669 svcauthdes_stats NEW: Secure RPC
1670 svcunix_create NEW: sunrpc etx
1671 svcunixfd_create NEW: sunrpc ext
1672 swapcontext NEW: Unix98
1673 tcgetsid NEW: Unix98 PTY
1674 tdestroy NEW: GNU ext.
1675 tgamma NEW: ISO C 9x
1676 tgammaf NEW: ISO C 9x
1677 tgammal NEW: ISO C 9x
1678 tmpfile64 NEW: LFS
1679 trunc NEW: ISO C 9x
1680 truncate64 NEW: LFS
1681 truncf NEW: ISO C 9x
1682 truncl NEW: ISO C 9x
1683 umount2 NEW: kernel
1684 unlockpt NEW: Unix98 PTY
1685 updwtmpx NEW: Unix98
1686 user2netname NEW: Secure RPC
1687 utmpxname NEW: Unix98
1688 versionsort NEW: GNU ext.
1689 versionsort64 NEW: GNU ext.
1690 waitid NEW: Unix98
1691 wcscasecmp NEW: GNU ext.
1692 wcsncasecmp NEW: GNU ext.
1693 wcsnlen NEW: GNU ext.
1694 wcstoimax NEW: ISO C 9x
1695 wcstoll NEW: ISO C 9x
1696 wcstoull NEW: ISO C 9x
1697 wcstoumax NEW: ISO C 9x
1698 wcswcs NEW: Unix98
1699 wordexp NEW: POSIX.2
1700 wordfree NEW: POSIX.2
1701 write_profiling REMOVED
1702 xdecrypt NEW: Secure RPC
1703 xdr_authdes_cred NEW: Secure RPC
1704 xdr_authdes_verf NEW: Secure RPC
1705 xdr_cryptkeyarg NEW: Secure RPC
1706 xdr_cryptkeyarg2 NEW: Secure RPC
1707 xdr_cryptkeyres NEW: Secure RPC
1708 xdr_getcredres NEW: Secure RPC
1709 xdr_key_netstarg NEW: Secure RPC
1710 xdr_key_netstres NEW: Secure RPC
1711 xdr_keybuf NEW: Secure RPC
1712 xdr_keystatus NEW: Secure RPC
1713 xdr_netnamestr NEW: Secure RPC
1714 xdr_sizeof NEW: Secure RPC
1715 xdr_unixcred NEW: sunrpc ext
1716 xencrypt NEW: Secure RPC
1717 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1718 \f
1719 Version 2.0.6
1721 * more bug fixes
1723 \f
1724 Version 2.0.5
1726 * more bug fixes
1728 * inet_ntoa is thread-safe
1730 * updwtmp is moved from libutil to libc
1732 * rewrite of cbrt function
1734 * update of timezone data
1735 \f
1736 Version 2.0.4
1738 * more bug fixes
1739 \f
1740 Version 2.0.3
1742 * more bug fixes
1743 \f
1744 Version 2.0.2
1746 * more bug fixes
1748 * add atoll function
1750 * fix complex problems in Berkeley DB code
1752 * fix math functions
1753 \f
1754 Version 2.0.1
1756 * fixed lots of header problems (especially Linux/GNU specific)
1758 * dynamic loader preserves all registers
1760 * Roland McGrath provided support for handling of auxiliary objects in
1761 the ELF dynamic loader.
1763 * support for parallel builds is improved
1764 \f
1765 Version 2.0
1767 * GNU extensions are no longer declared by default. To enable them you
1768 must define the macro `_GNU_SOURCE' in your program or compile with
1769 `-D_GNU_SOURCE'.
1771 * The library has changed from using GNU ld symbol aliases to using weak
1772 symbols where available. The ELF object file format supports weak
1773 symbols; GNU ld also supports weak symbols in the a.out format. (There
1774 is also now support for other GNU ld extensions in ELF. Use the
1775 `--with-elf' option to configure to indicate you have ELF, and
1776 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1777 of many files which contained only symbol aliases, reducing the size of
1778 the source and the compiled library; many other files were renamed to
1779 less cryptic names previously occupied by the symbol alias files.
1780 There is a new header file <elf.h> for programs which operate on
1781 files in the ELF format.
1783 * Converted to Autoconf version 2, so `configure' has more options.
1784 Run `configure --help' to see the details.
1786 * The library can now be configured to build profiling, highly-optimized
1787 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1788 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1789 `configure' enable building these extra libraries. The shared library is
1790 built by default when using both ELF and GNU ld. When shared libraries
1791 are enabled, the new library `-ldl' is available for arbitrary run-time
1792 loading of shared objects; its interface is defined in <dlfcn.h>. The
1793 new header file <link.h> gives access to the internals of the run-time
1794 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1795 application of same name on other systems and it provides information
1796 about dynamically linked binaries.
1798 * The C library now provides the run-time support code for profiling
1799 executables compiled with `-pg'. Programs can control the profiling code
1800 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1801 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1802 the support for this file format was contributed by David Mosberger-Tang.
1804 * The math code has been replaced with a math library based on fdlibm from
1805 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1806 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1807 functions. The math functions now reside in a separate library, so
1808 programs using them will need to use `-lm' their linking commands.
1810 * John C. Bowman contributed optimized ix87 assembler inline functions.
1812 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1813 mechanism similar to that found in Solaris 2. This is now used for the
1814 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1815 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1816 file controls what services are used for each individual database. This
1817 works by loading shared libraries with names specified in `nsswitch.conf',
1818 so service modules can be changed or added at any time without even
1819 relinking any program. Currently there are the file, db, and NIS based
1820 NSS services available.
1822 * The new functions `strtoq' and `strtouq' parse integer values from
1823 strings, like `strtol' and `strtoul', but they return `long long int' and
1824 `unsigned long long int' values, respectively (64-bit quantities).
1826 * The new functions `strtof' and `strtold' parse floating-point values from
1827 strings, like `strtod', but they return `float' and `long double' values,
1828 respectively (on some machines `double' and `long double' are the same).
1830 * Ulrich Drepper has contributed new implementations of the floating-point
1831 printing and reading code used in the `printf' family of functions and
1832 `strtod', `strtof', and `strtold'. These new functions are perfectly
1833 accurate, and much faster than the old ones.
1835 * The implementation of the POSIX locale model was completely rewritten by
1836 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1837 to compile the POSIX locale definition.
1839 * The former dummy implementations of the strcoll and strxfrm function are
1840 now replaced by fully functional code contributed by Ulrich Drepper. The
1841 collation information comes from the POSIX locale definitions.
1843 * The new header <langinfo.h> defines an interface for accessing
1844 various locale-dependent data (using the locale chosen with `setlocale').
1846 * Ulrich Drepper has contributed a new suite of functions for operation on
1847 wide-character and multibyte-character strings, in <wchar.h>;
1848 and classification and case conversion of wide characters, in <wctype.h>.
1849 These new functions are conforming to the ISO C, Amendement 1 specification.
1851 * There is now a second implementation of the standard I/O library available.
1852 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1853 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1855 * You can now use positional parameter specifications in format strings
1856 for the `printf' and `scanf' families of functions. For example,
1857 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1858 ``Number 6, Mr Jones''. This is mainly useful when providing different
1859 format strings for different languages, whose grammars may dictate
1860 different orderings of the values being printed. To support this
1861 feature, the interface for `register_printf_handler' has changed; see
1862 the header file <printf.h> for details.
1864 * The `printf' and `scanf' families of functions now understand a new
1865 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1866 to group numbers as indicated by the locale; for `scanf' and friends, this
1867 says to accept as valid only a number with all the proper grouping
1868 separators in the right places. In the default "C" locale, numbers are
1869 not grouped; but locales for specific countries will define the usual
1870 conventions (i.e. separate thousands with `,' in the US locale).
1872 * The pgrp functions have been regularized, slightly incompatibly but much
1873 less confusingly. The core functions are now `getpgid' and `setpgid',
1874 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1875 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1876 provided for compatibility. There is no longer an incompatible `getpgrp'
1877 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1879 * The new header file <fts.h> and suite of functions simplify programs that
1880 operate on directory trees. This code comes from 4.4 BSD.
1882 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1883 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1884 NSS scheme used in glibc.
1886 * There is a new malloc debugging hook `__memalign_hook'.
1888 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1889 `unsigned int' in <sys/types.h>. These are for compatibility only and
1890 their use is discouraged.
1892 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1893 done differently, so that it works even without GNU ld.
1895 * New function `euidaccess' checks allowed access to a file like `access',
1896 but using the effective IDs instead of the real IDs.
1898 * The time zone data files have been updated for the latest and greatest
1899 local time conventions of the countries of the world.
1901 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1902 see <dirent.h>.
1904 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1905 for formatting floating-point numbers. They are provided only for
1906 compatibility; new programs should use `sprintf' instead. There are
1907 also equivalent function for the `long double' floating-point type and
1908 all functions also exist in a reentrant form.
1910 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1911 functions for maintaining the login-record files (primarily of use to
1912 system programs such as `login'), and convenient functions for
1913 allocating and initializing a pseudo-terminal (pty) device.
1915 * Ulrich Drepper has contributed new support for System V style
1916 shared memory and IPC on systems that support it.
1918 * Ulrich Drepper has contributed several miscellaneous new functions found
1919 in System V: The `hsearch' family of functions provide an effective
1920 implementation of hash tables; `a64l' and `l64a' provide a very simple
1921 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1922 number generator.
1924 * Ulrich Drepper has contributed new reentrant counterparts for the
1925 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1927 * Ulrich Drepper has contributed new, highly-optimized versions of several
1928 string functions for the i486/Pentium family of processors.
1930 * Ulrich Drepper has updated the Linux-specific code, based largely
1931 on work done in Hongjiu Lu's version of GNU libc for Linux.
1932 The GNU library now supports Linux versions 2.0.10 and later,
1933 using the ELF object file format (i[3456]86-*-linux).
1935 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1937 * David Mosberger-Tang and Richard Henderson have ported the C library
1938 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1939 dynamic linking support for ELF/Alpha.
1941 * Richard Henderson contributed several Alpha optimized assembler function
1942 for arithmetic and string handling.
1944 * Ulrich Drepper has contributed a new set of message catalog functions to
1945 support multiple languages using the <libintl.h> interface, for use with
1946 his new package GNU gettext. Translation volunteers have contributed
1947 catalogs of the library's messages in Spanish, German, and Korean.
1949 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1950 program and the `catgets' function for reading the catalog files it
1951 creates. (The <libintl.h> interface is preferred; we include the
1952 <nl_types.h> interface using `catgets' only for source compatibility with
1953 programs already written to use it.)
1955 * New header file <values.h> gives SVID-compatible names for <limits.h>
1956 constants.
1958 * Various new macros, declarations, and small header files for compatibility
1959 with 4.4 BSD.
1961 * New function `group_member' is a convenient way to check if a process has
1962 a given effective group ID.
1964 * When using GCC 2.7 and later, the socket functions are now declared in a
1965 special way so that passing an argument of type `struct sockaddr_in *',
1966 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1967 `struct sockaddr *' type, does not generate a type-clash warning.
1969 * New function `error' declared in header file <error.h> is a convenient
1970 function for printing error messages and optionally exiting; this is the
1971 canonical function used in GNU programs. The new functions `err', `warn',
1972 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1973 doing the same thing.
1975 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1976 POSIX.2 `glob' function to do ~ and {...} expansion.
1978 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1979 `clearenv' which is used in POSIX.9 is also available.
1981 * New function `getsid' returns session ID number on systems that support it.
1983 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1984 files <db.h> and <mpool.h> provide a rich set of functions for several
1985 types of simple databases stored in memory and in files, and <ndbm.h> is
1986 an old `ndbm'-compatible interface using the `db' functions. Link with
1987 `-ldb' to get these functions.
1989 * New macro `strdupa' copies a string like `strdup', but uses local stack
1990 space from `alloca' instead of dynamic heap space from `malloc'.
1992 * New function `strnlen' is like `strlen' but searches only a given maximum
1993 number of characters for the null terminator. `stpncpy', `strndup' and
1994 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1995 function.
1997 * New function `statfs' in header <sys/statfs.h>.
1999 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2000 provide convenient functions for operating on blocks of null-terminated
2001 strings.
2003 * A new suite of functions in <utmp.h> handle all the details of reading
2004 and writing the utmp file.
2006 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2007 Thorsten Kukuk.
2009 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2010 completely POSIX compliant and also implemented the extended functionality
2011 to handle alternate digit representation and alternate era date formats.
2013 * Ulrich Drepper provided an implementation of the `strptime' function
2014 defined in XPG4.2 which transforms a string into a `struct tm' value.
2016 * Paul Eggert provided the tzselect shell script as part of the timezone
2017 code. The shell script makes it easy to select the correct timezone
2018 specification.
2020 * The implementation of the malloc family of functions is completely replaced
2021 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2022 The implementation uses the mmap function (if available) and it is
2023 optimized for the use in multi threaded programs.
2025 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2026 functions. This new functionality is usable by specifying a special
2027 salt string and it is compatible with implementation on *BSD systems.
2029 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2030 `getsubopt' to handle second level command line options, `bsd_signal'
2031 to access BSD style `signal' functionality, the obsolete `regexp' style
2032 expression matcher.
2034 * the `lchown' function is available on system which support this
2035 functionality.
2037 * The implementation of the shadow password handling function was contributed
2038 by Ulrich Drepper.
2040 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2042 * POSIX.1g support was added. The <sys/select.h> header is available,
2043 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2044 implementation of `getaddrinfo'.
2045 \f
2046 Version 1.09
2048 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2050 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2051 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2053 * The new function `daemon' from 4.4 BSD is useful for server programs that
2054 want to put themselves in the background.
2056 * Joel Sherrill has contributed support for several standalone boards that
2057 run without an operating system.
2059 * `printf', `scanf' and friends now accept a `q' type modifier for long
2060 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2062 * All of the code taken from BSD (notably most of the math and networking
2063 routines) has been updated from the BSD 4.4-Lite release.
2065 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2067 * The new functions `getdomainname' and `setdomainname' fetch or change the
2068 YP/NIS domain name. These are system calls which exist on systems which
2069 have YP (aka NIS).
2071 * The time zone data files have been updated for the latest international
2072 conventions.
2074 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2075 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2076 \f
2077 Version 1.08
2079 * The C library now includes support for Sun RPC, from Sun's free
2080 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2081 are included. (There is still no support for YP.)
2083 * Tom Quinn has contributed a port of the C library to SGI machines running
2084 Irix 4 (mips-sgi-irix4).
2086 * The new `lockf' function is a simplified interface to the locking
2087 facilities of `fcntl', included for compatibility.
2089 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2091 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2093 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2094 compatibility.
2096 * The error message printed by `assert' for a failed assertion now includes
2097 the name of the program (if using GNU ld) and the name of the calling
2098 function (with versions of GCC that support this).
2100 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2102 * The library now includes the <sys/mman.h> header file and memory
2103 management functions `mmap', `munmap', `mprotect', `msync', and
2104 `madvise', on systems that support those facilities.
2106 * The interface for `mcheck' has changed slightly: the function called to
2107 abort the program when an allocation inconsistency is detected now takes
2108 an argument that indicates the type of failure. The new function
2109 `mprobe' lets you request a consistency check for a particular block at
2110 any time (checks are normally done only when you call `free' or `realloc'
2111 on a block).
2113 * It is now possible to easily cross-compile the C library, building on one
2114 system a library to run on another machine and/or operating system. All
2115 you need to do is set the variable `HOST_CC' in `configparms' to the
2116 native compiler for programs to run on the machine you are building on (a
2117 few generator programs are used on Unix systems); set `CC' to the
2118 cross-compiler.
2120 * The new function `fexecve' (only implemented on the GNU system) executes
2121 a program file given a file descriptor already open on the file.
2122 \f
2123 Version 1.07
2125 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2126 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2128 * You can set the variable `libprefix' in `configparms' to specify a prefix
2129 to be prepended to installed library files; this makes it easy to install
2130 the GNU C library to be linked as `-lgnuc' or whatever.
2132 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2133 copies a limited number of characters from a string, and returns the
2134 address of the last character written.
2136 * You no longer need to check for whether the installed `stddef.h' is
2137 compatible with the GNU C library. configure now checks for you.
2139 * You can now define a per-stream `fileno' function to convert the
2140 stream's cookie into an integral file descriptor.
2142 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2143 allocates zero bytes of storage, and returns a unique pointer which
2144 you can pass to `realloc' or `free'. The behavior is undefined if
2145 you dereference this pointer.
2147 * The C library now runs on Sony NEWS m68k machines running either
2148 NewsOS 3 or NewsOS 4.
2150 * The new `syscall' function is a system-dependent primitive function
2151 for invoking system calls. It has the canonical behavior on Unix
2152 systems, including unreliable return values for some calls (such as
2153 `pipe', `fork' and `getppid').
2155 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2156 to `EAGAIN', which is the preferred name. On systems whose kernels
2157 use two distinct codes, the C library now translates EWOULDBLOCK to
2158 EAGAIN in every system call function.
2159 \f
2160 Version 1.06
2162 * The GNU C Library Reference Manual is now distributed with the library.
2163 `make dvi' will produce a DVI file of the printed manual.
2164 `make info' will produce Info files that you can read on line using C-h i
2165 in Emacs or the `info' program.
2166 Please send comments on the manual to bug-glibc-manual@gnu.org.
2168 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2170 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2172 * Jason Merrill has contributed a port to the Sequent Symmetry running
2173 Dynix version 3 (i386-sequent-dynix).
2175 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2176 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2178 * New function `memory_warnings' lets you arrange to get warnings when
2179 malloc is running out of memory to allocate, like Emacs gives you.
2181 * The C library now contains the relocating allocator used in Emacs 19 for
2182 its editing buffers. This allocator (ralloc) minimizes allocation
2183 overhead and fragmentation by moving allocated regions around whenever it
2184 needs to. You always refer to a ralloc'd region with a "handle" (a
2185 pointer to a pointer--an object of type `void **').
2187 * There is a new `printf' format: `%m' gives you the string corresponding
2188 to the error code in `errno'.
2190 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2191 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2192 pass, the `a' modifier says to fill in a `char **' you pass with a
2193 malloc'd string.
2195 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2196 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2197 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2199 * `mkstemp' is a traditional Unix function to atomically create and open a
2200 uniquely-named temporary file.
2201 \f
2202 Version 1.05
2204 * The standard location for the file that says what the local timezone is
2205 has changed again. It is now `/usr/local/etc/localtime' (or more
2206 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2208 * The distribution no longer contains any files with names longer than 14
2209 characters.
2211 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2212 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2214 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2215 \f
2216 Version 1.04
2218 * The configuration process has changed quite a bit. The `configure'
2219 script is now used just like the configuration scripts for other GNU
2220 packages. The `sysdeps' directory hierarchy is much rearranged.
2221 The file `INSTALL' explains the new scheme in detail.
2223 * The header files no longer need to be processed into ANSI C and
2224 traditional C versions. There is just one set of files to install, and
2225 it will work with ANSI or old C compilers (including `gcc -traditional').
2227 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2228 MIPS DECStation running Ultrix 4.
2230 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2231 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2232 made itself into a shared library.
2234 * Yet further improved support for the i386, running 4.3 BSD-like systems
2235 (such as Mach 3 with the Unix single-server), or System V.
2237 * New function `strncasecmp' to do case-insensitive string comparison
2238 with limited length.
2240 * New function `strsep' is a reentrant alternative to `strtok'.
2242 * New functions `scandir' and `alphasort' for searching directories.
2244 * New function `setenv' is a better interface to `putenv'.
2246 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2247 function for traversing a directory tree.
2249 * The GNU obstack package is now also part of the C library.
2250 The new function `open_obstack_stream' creates a stdio stream that
2251 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2252 formatted output directly to an obstack.
2254 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2255 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2257 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2259 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2260 things to your strings.
2262 * There are some new test programs: test-fseek, testmb, and testrand.
2264 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2265 These ports are not finished, but are a good starting place for really
2266 supporting those systems.
2268 * `/etc/localtime' is now the standard location for the file that says what
2269 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2270 This follows the general principle that `/etc' is the place for all local
2271 configuration files.
2273 * The C library header files now use `extern "C"' when used by the C++
2274 compiler, so the C library should now work with C++ code.
2276 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2277 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2278 in <strings.h>.)
2280 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2281 function which uses the `merge sort' algorithm, and is said to be
2282 significantly faster than the old GNU `qsort' function. Merge sort is
2283 now the standard `qsort' function. The new algorithm can require a lot
2284 of temporary storage; so, the old sorting function is called when the
2285 required storage is not available.
2287 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2288 provides the Unix `crypt' function, plus some other entry points.
2290 * The code and header files taken from 4.4 BSD have been updated with the
2291 latest files released from Berkeley.
2292 \f
2293 ----------------------------------------------------------------------
2294 Copyright information:
2296 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2298 Permission is granted to anyone to make or distribute verbatim copies
2299 of this document as received, in any medium, provided that the
2300 copyright notice and this permission notice are preserved,
2301 thus giving the recipient permission to redistribute in turn.
2303 Permission is granted to distribute modified versions
2304 of this document, or of portions of it,
2305 under the above conditions, provided also that they
2306 carry prominent notices stating who last changed them.
2307 \f
2308 Local variables:
2309 version-control: never
2310 fill-column: 76
2311 End: