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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:
12 431, 13982, 13985, 14155, 14547, 14699, 15048, 15400, 15427, 15522,
13 15531, 15532, 15608, 15609, 15610, 15632, 15640, 15680, 15681, 15723,
14 15734, 15735, 15736, 15748, 15749, 15754, 15760, 15797, 15844, 15849,
15 15855, 15856, 15857, 15859, 15867, 15886, 15887, 15890, 15892, 15893,
16 15895, 15897, 15905, 15909, 15919, 15921, 15887, 15890, 15892, 15893,
17 15895, 15897, 15905, 15909, 15919, 15921, 15923, 15939, 15963, 15966,
18 15988.
20 * CVE-2012-4412 The strcoll implementation caches indices and rules for
21 large collation sequences to optimize multiple passes. This cache
22 computation may overflow for large collation sequences and may cause a
23 stack or buffer overflow. This is now fixed to use a slower algorithm
24 which does not use a cache if there is an integer overflow.
26 * CVE-2012-4424 The strcoll implementation uses malloc to cache indices and
27 rules for large collation sequences to optimize multiple passes and falls
28 back to alloca if malloc fails, resulting in a possible stack overflow.
29 The implementation now falls back to an uncached collation sequence lookup
30 if malloc fails.
32 * CVE-2013-4788 The pointer guard used for pointer mangling was not
33 initialized for static applications resulting in the security feature
34 being disabled. The pointer guard is now correctly initialized to a
35 random value for static applications. Existing static applications need
36 to be recompiled to take advantage of the fix (bug 15754).
38 * CVE-2013-4237 The readdir_r function could write more than NAME_MAX bytes
39 to the d_name member of struct dirent, or omit the terminating NUL
40 character. (Bugzilla #14699).
42 * CVE-2013-4332 The pvalloc, valloc, memalign, posix_memalign and
43 aligned_alloc functions could allocate too few bytes or corrupt the
44 heap when passed very large allocation size values (Bugzilla #15855,
45 #15856, #15857).
47 * New locales: ak_GH, cmn_TW, hak_TW, lzh_TW, nan_TW, quz_PE, pap_AW, pap_CW,
48 ar_SS.
50 * Substantially revised locales: gd_GB, ht_HT
52 * The LC_ADDRESS field was updated to support country_car for almost all
53 supported locales.
55 * ISO 1427 definitions were updated.
57 * ISO 3166 definitions were updated.
59 * The localedef utility now supports --big-endian and --little-endian
60 command-line options to generate locales for a different system from that
61 for which the C library was built.
63 * The configure option --disable-versioning has been removed. Builds with
64 --disable-versioning had not worked for several years.
66 * ISO 639 definitions were updated for Chiga (cgg) and Chinese (gan, hak, czh,
67 cjy, lzh, cmn, mnp, cdo, czo, cpx, wuu, hsn, yue).
69 * SystemTap probes for malloc have been introduced.
71 * Support for powerpc64le has been added.
72 \f
73 Version 2.18
75 * The following bugs are resolved with this release:
77 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
78 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
79 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
80 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
81 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
82 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
83 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
84 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
85 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
86 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
87 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
88 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
89 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
90 15759.
92 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
93 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
94 Distributions can re-enable building and using pt_chown via the new configure
95 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
96 considerable security risks and should only be used if the distribution
97 understands and accepts the risks.
99 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
100 #15078).
102 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
103 fixed (Bugzilla #15330).
105 * Add support for calling C++11 thread_local object destructors on thread
106 and program exit. This needs compiler support for offloading C++11
107 destructor calls to glibc.
109 * Improved worst case performance of libm functions with double inputs and
110 output.
112 * Support for priority inherited mutexes in pthread condition variables on
113 non-x86 architectures.
115 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
117 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
119 * Optimized string functions for ARM. Implemented by Will Newton and
120 Richard Henderson.
122 * Optimized libm functions for SPARC. Implemented by David S. Miller.
124 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
125 Richard Henderson.
127 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
128 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
130 * Added a benchmark framework to track performance of functions in glibc.
132 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
133 It is based on draft TS 18661 and currently enabled as a GNU extension.
135 * On Linux, the clock function now uses the clock_gettime system call
136 for improved precision, rather than old times system call.
138 * Added new API functions pthread_getattr_default_np and
139 pthread_setattr_default_np to get and set the default pthread
140 attributes of a process.
142 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
143 This may improve lock scaling of existing programs on TSX capable systems.
144 When the --enable-lock-elision=yes parameter is specified at configure
145 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
146 mutexes.
148 * Support added for AT_HWCAP2 (to coincide with Linux kernel 3.10
149 availability). Implemented by Ryan S. Arnold.
151 * Support added for POWER8 platform. Implemented by Ryan S. Arnold.
152 \f
153 Version 2.17
155 * The following bugs are resolved with this release:
157 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
158 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
159 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
160 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
161 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
162 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
163 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
164 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
165 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
166 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
167 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
168 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
169 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
170 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
171 14879, 14889, 14893, 14898, 14914.
173 * Optimization of memcpy for MIPS.
175 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
176 EMFILE has been fixed (Bugzilla #14889).
178 * The add-on ports collection is now distributed in the "ports" subdirectory
179 of the main GNU C Library distribution, rather than separately.
181 * Port to ARM AArch64 contributed by Linaro.
183 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
184 Optimized versions of memcpy, memset, and memcmp added for System z10 and
185 zEnterprise z196.
186 Implemented by Andreas Krebbel.
188 * The new function secure_getenv allows secure access to the environment,
189 returning NULL if running in a SUID/SGID process. This function replaces
190 the internal function __secure_getenv.
192 * SystemTap static probes have been added into the dynamic linker.
193 Implemented by Gary Benson.
195 * Optimizations of string functions strstr, strcasestr and memmem.
196 Implemented by Maxim Kuvyrkov.
198 * The minimum Linux kernel version that this version of the GNU C Library
199 can be used with is 2.6.16.
201 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
202 powerpc POWER7. Implemented by Will Schmidt.
204 * New configure option --disable-nscd builds the C library such that it
205 never attempts to contact the Name Service Caching Daemon (nscd).
206 New configure option --disable-build-nscd avoids building nscd itself;
207 this is the default if --disable-nscd is used.
209 * Improved support for cross-compilation, including cross-testing and
210 bootstrap builds without a previously built glibc.
212 * Several testsuite tests are now able to test multiple IFUNC variants of an
213 interface, rather than just testing the one that would be chooen by
214 default.
216 * New configure options --with-bugurl and --with-pkgversion, for
217 distributors to use to embed their bug-reporting and package version
218 information in --help and --version output.
220 * The ttyname and ttyname_r functions on Linux now fall back to searching for
221 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
222 allows creation of chroots without the procfs mounted on /proc.
224 * The `crypt' function now fails if passed salt bytes that violate the
225 specification for those values. On Linux, the `crypt' function will
226 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
227 enabled, and fail on encrypted strings using the MD5 or DES algorithm
228 when the mode is enabled.
230 * The `clock_*' suite of functions (declared in <time.h>) is now available
231 directly in the main C library. Previously it was necessary to link with
232 -lrt to use these functions. This change has the effect that a
233 single-threaded program that uses a function such as `clock_gettime' (and
234 is not linked with -lrt) will no longer implicitly load the pthreads
235 library at runtime and so will not suffer the overheads associated with
236 multi-thread support in other code such as the C++ runtime library.
238 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
239 sat_IN, and szl_PL.
240 \f
241 Version 2.16
243 * The following bugs are resolved with this release:
245 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
246 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
247 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
248 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
249 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
250 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
251 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
252 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
253 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
254 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
255 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
256 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
257 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
258 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
259 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
260 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
261 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
262 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
263 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
264 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
265 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
266 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
267 14277, 14278.
269 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
270 configuring glibc with:
271 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
272 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
273 Implemented by H.J. Lu.
275 * ISO C11 support:
277 + define static_assert
279 + do not declare gets
281 + declare at_quick_exit and quick_exit also for ISO C11
283 + aligned_alloc. NB: The code is deliberately allows the size parameter
284 to not be a multiple of the alignment. This is a moronic requirement
285 in the standard but it is only a requirement on the caller, not the
286 implementation.
288 + timespec_get added
290 + uchar.h support added
292 + CMPLX, CMPLXF, CMPLXL added
294 Implemented by Ulrich Drepper.
296 * Support for the IA-64 has been moved to ports.
298 * Remove support for anything but ELF binary format
300 * Checking versions of poll, ppoll added.
301 Implemented by Ulrich Drepper.
303 * More generic and 64-bit performance optimizations to math functions.
304 Implemented by Ulrich Drepper.
306 * New configure option --enable-obsolete-rpc makes the deprecated RPC
307 headers and functions available at compile time as they were before
308 version 2.14. This option will be removed at some time in the future
309 after the TI-RPC library becomes fully sufficient for the needs of
310 existing applications.
312 * Compatibility code for Linux kernel versions before 2.4 has been removed.
313 Note that glibc is not expected to work with any Linux kernel version
314 before 2.6.
316 * New header <sys/auxv.h> and function getauxval allowing easy access to
317 the AT_* key-value pairs passed from the Linux kernel. The header also
318 defines the HWCAP_* bits associated with the AT_HWCAP key.
320 * New locales: mag_IN
322 * New configure option --enable-systemtap builds SystemTap static probes
323 into libc for setjmp and longjmp and into libpthread for various operations.
324 So far the setjmp/longjmp probes and some of the libpthread probes are
325 provided only for i*86 and x86_64.
326 Implemented by Roland McGrath and Rayson Ho.
328 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
330 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
331 and Will Schmidt.
333 * More optimized functions for SPARC. Implemented by David S. Miller.
335 * Improved support for cross-compilation, especially bootstrap builds
336 without a previously built glibc.
338 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
339 Chris Metcalf from Tilera.
341 * Support for the old ARM ABI has been removed from ports. Only the EABI is
342 now supported for ARM processors.
344 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
345 as the name of the dynamic linker, to distinguish it from the
346 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
348 * Support for CRIS has been removed from ports.
350 * A new class of installed header has been documented for low-level
351 platform-specific functionality. PowerPC added the first instance with a
352 function to provide time base register access. Contributed by Tulio
353 Magno Quites Machado Filho.
355 * ix86 configurations now install header files that are consistent with
356 what x86-64 configurations install. These same header files can be used
357 for -m32, -m64, or -mx32 builds.
358 Contributed by H.J. Lu.
360 * Math library bug fixes. A thorough audit of all open math library bugs was
361 conducted by Joseph Myers. Significant progress was made on many math
362 library bugs resulting in more accurate exceptions and function results.
363 Many thanks to all those that contributed including Andreas Jaeger for his
364 patch review and work on the x87 trigonometric instruction issues.
366 * Timezone data is no longer installed. Timezone-related binaries and scripts
367 will continue to be installed. Users should obtain their timezone data from
368 their distribution provider or from the tzdata package at
369 <ftp://munnari.oz.au/pub/>.
370 \f
371 Version 2.15
373 * The following bugs are resolved with this release:
375 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
376 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
377 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
378 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
379 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
380 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
381 13484, 13506, 13515, 13523, 13524, 13538, 13540
383 * New program pldd to list loaded object of a process
384 Implemented by Ulrich Drepper.
386 * Add nss_db support back to glibc. No more dependency on Berkeley db
387 and support for initgroups lookups.
388 Implemented by Ulrich Drepper.
390 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
391 Contributed by HJ Lu.
393 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
394 Contributed by HJ Lu.
396 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
397 on x86-32 and x86-64.
398 Contributed by Liubov Dmitrieva.
400 * Optimized strchr and strrchr for SSE on x86-32.
401 Contributed by Liubov Dmitrieva.
403 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
404 for x86-64 and x86-32.
405 Contributed by Liubov Dmitrieva.
407 * New interfaces: scandirat, scandirat64
408 Implemented by Ulrich Drepper.
410 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
411 Implemented by Ulrich Drepper.
413 * nscd now also caches the netgroup database.
414 Implemented by Ulrich Drepper.
416 * Integrate libm with gcc's -ffinite-math-only option.
417 Implemented by Ulrich Drepper.
419 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
420 to math functions. Implemented by Ulrich Drepper.
422 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
423 Implemented by Ulrich Drepper.
425 * New Linux interfaces: process_vm_readv, process_vm_writev
427 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
428 Implemented by Ulrich Drepper.
430 * Optimized nearbyint and strcasecmp for PPC.
431 Implemented by Adhemerval Zanella.
433 * New locales: bho_IN, unm_US, es_CU, ta_LK
434 \f
435 Version 2.14
437 * The following bugs are resolved with this release:
439 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
440 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
441 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
442 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
443 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
444 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
445 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
446 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
447 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
448 12795, 12811, 12813, 12814, 12841
450 * The RPC implementation in libc is obsoleted. Old programs keep working
451 but new programs cannot be linked with the routines in libc anymore.
452 Programs in need of RPC functionality must be linked against TI-RPC.
453 The TI-RPC implementation is IPv6 enabled and there are other benefits.
455 Visible changes of this change include (obviously) the inability to link
456 programs using RPC functions without referencing the TI-RPC library and the
457 removal of the RPC headers from the glibc headers.
458 Implemented by Ulrich Drepper.
460 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
461 syncfs, setns, sendmmsg
463 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
464 yue_HK, lij_IT, mhr_RU
466 * New encodings: CP770, CP771, CP772, CP773, CP774
468 * New program sotruss to trace calls through PLTs
469 Implemented by Ulrich Drepper.
471 * The malloc hook implementation is marked deprecated and will be removed
472 from the default implementation in the next version. The design never
473 worked ever since the introduction of threads. Even programs which do
474 not create threads themselves can use multiple threads created internally.
475 \f
476 Version 2.13
478 * The following bugs are resolved with this release:
480 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
481 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
482 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
483 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
484 12378, 12394, 12397
486 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
488 * POWER7 optimizations: memset, memcmp, strncmp
490 * New optimized string functions for x86-64: strnlen (SSE2),
491 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
492 Implemented by Ulrich Drepper.
493 \f
494 Version 2.12
496 * The following bugs are resolved with this release:
498 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
499 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
500 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
501 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
502 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
503 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
504 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
505 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
507 * New interfaces: pthread_getname_np, pthread_setname_np
509 * New Linux interface: recvmmsg
511 * STT_GNU_IFUNC implemented for Sparc by David Miller.
513 * The dynamic linker now recognizes supported ABI versions from the
514 EI_ABIVERSION field in the ELF header.
515 Implemented by Ulrich Drepper.
517 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
518 will not be used to fill in password fields in the passwd.byname replies.
519 Instead it is used to synthesize the shadow.byname table, should it be
520 missing. This is a useful mode in some installations involving Solaris.
521 Implemented by Ulrich Drepper.
523 * New locales: kok_IN, sq_MK, cv_RU
524 \f
525 Version 2.11
527 * The following bugs are resolved with this release:
529 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
530 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
531 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
532 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
533 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
534 10789, 10817, 10823, 10840, 10847
536 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
537 mkostemps64
538 Implemented by Ulrich Drepper.
540 * Checking version of longjmp added that fails if an uninitialized stack
541 frame would be created. Implemented by Ulrich Drepper.
543 * STT_GNU_IFUNC is now supported in static executables.
544 Implemented by H.J. Lu.
546 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
548 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
549 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
550 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
551 Contributed by H.J. Lu.
553 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
554 Implemented by Ulrich Drepper.
556 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
557 strstr, strcasestr.
558 Contributed by H.J. Lu.
560 * Support for fma instruction in AVX on x86-64.
561 Implemented by H.J. Lu and Ulrich Drepper.
563 * AVX support in x86-64 auditing support in ld.so.
564 Implemented by H.J. Lu.
566 * STB_GNU_UNIQUE support added.
567 Implemented by Ulrich Drepper.
569 * Implement second fallback mode for optimized DNS lookup for even more
570 broken environments. If two requests from the same port are not
571 handled correctly close the socket and open a new one before sending
572 the second request. The 'single-request-reopen' option in /etc/resolv.conf
573 can be used to select this mode right away, instead of rediscovering the
574 necessity is every process again.
575 Implemented by Ulrich Drepper.
577 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
578 Implemented by Adam Tkac.
580 * Optimized iconv conversions for S390x.
581 Implemented by Andreas Krebbel.
583 * Using condvars with PI mutexes is now more efficient due to kernel
584 support for requeueing to PI futexes. NPTL support added for x86-64.
585 Implemented by Ulrich Drepper.
587 * New locales: ps_AF, my_MM
588 \f
589 Version 2.10
591 * The following bugs are resolved with this release:
593 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
594 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
595 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
596 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
597 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
599 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
600 Implemented by Ulrich Drepper.
602 * New Linux interfaces: accept4, fallocate, fallocate64.
603 Implemented by Ulrich Drepper.
605 * Correct declarations of string function when used in C++ code. This
606 could lead to compile errors for invalid C++ code.
608 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
609 now in POSIX.
611 * New POSIX 2008 interface: psiginfo
612 Implemented by Ulrich Drepper.
614 * New ISO C++1x interfaces: quick_exit, at_quick_exit
615 Implemented by Ulrich Drepper.
617 * Support for selecting between multiple function definitions at runtime
618 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
620 * The libcrypt library can now use the hash function implementations in
621 NSS. Implemented by Ulrich Drepper.
623 * The malloc implementation can be compiled to be less memory efficient
624 but higher performing in multi-threaded programs.
625 Implemented by Ulrich Drepper.
627 * New locales: nan_TW@latin, ks_IN
629 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
630 Implemented by Ulrich Drepper.
632 * Extended printf hook support. It is possible to use user-defined types
633 and extend existing format specifiers.
634 Implemented by Ulrich Drepper.
636 * Handling for group shadow files has been added.
637 Implemented by Ulrich Drepper.
639 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
640 servers (the case, e.g., for some people using the built-in DNS
641 server in ADSL modems/routers). There is a once-per-process timeout
642 in case of a broken server. To avoid it, users can run nscd or put
643 'options single-request' in /etc/resolv.conf.
644 Implemented by Ulrich Drepper.
645 \f
646 Version 2.9
648 * The following bugs are resolved with this release:
650 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
651 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
652 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
653 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
654 6968, 6974, 6980, 6995, 7008, 7009, 7029
656 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
657 up at the same time. Implemented by Ulrich Drepper.
659 * TLS descriptors for LD and GD on x86 and x86-64.
660 Implemented by Alexandre Oliva.
662 * getaddrinfo now handles DCCP and UDPlite.
663 Implemented by Ulrich Drepper.
665 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
666 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
667 Implemented by Ulrich Drepper.
669 * New implementation of memmem, strstr, and strcasestr which is O(n).
670 Implemented by Eric Blake.
672 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
674 * Implement "e" option for popen to open file descriptor with the
675 close-on-exec flag set. Implemented by Ulrich Drepper.
677 * Implement "b" mode for fmemopen. In this mode writes writes don't
678 implicitly add a NUL byte and seeks from the end of the buffer really
679 use the buffer end, not the string length as the basis.
680 Implemented by Ulrich Drepper.
682 * Many functions, exported and internal, now atomically set the close-on-exec
683 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
685 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
686 Sinhala)
687 Implemented by Pravin Satpute.
689 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
690 \f
691 Version 2.8
693 * The following bugs are resolved with this release:
695 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
696 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
697 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
698 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
699 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
700 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
701 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
703 * New locales: bo_CN, bo_IN, shs_CA.
705 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
707 * Sorting rules for some Indian languages (Devanagari and Gujarati).
708 Implemented by Pravin Satpute.
710 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
712 * nscd caches now all timeouts for DNS entries
713 Implemented by Ulrich Drepper.
715 * nscd is more efficient and wakes up less often.
716 Implemented by Ulrich Drepper.
718 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
719 vdprintf, and obstack_vprintf.
720 Implemented by Jakub Jelinek.
722 * Faster memset for x86-64.
723 Implemented by Harsha Jagasia and H.J. Lu.
725 * Faster memcpy on x86.
726 Implemented by Ulrich Drepper.
728 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
729 Implemented by Ulrich Drepper.
731 * Faster sqrt and sqrtf implemention for some PPC variants.
732 Implemented by Steven Munroe.
733 \f
734 Version 2.7
736 * The following bugs are resolved with this release:
738 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
739 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
740 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
741 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
742 5071, 5103, 5104, 5112, 5113, 5184, 5186
744 * More checking functions: fread, fread_unlocked, open*, mq_open.
745 Implemented by Jakub Jelinek and Ulrich Drepper.
747 * Extend fortification to C++. Implemented by Jakub Jelinek.
749 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
750 by not recognizing 'a' as a modifier when those specs are requested.
751 Implemented by Jakub Jelinek.
753 * PPC optimizations to math and string functions.
754 Implemented by Steven Munroe.
756 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
757 options to be passed. Implemented by Ulrich Drepper.
759 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
761 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
762 Implemented by Ulrich Drepper.
764 * Handle private futexes in the NPTL implementation.
765 Implemented by Jakub Jelinek and Ulrich Drepper.
767 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
768 Implemented by Roland McGrath and Ulrich Drepper.
770 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
772 * SHA-256 and SHA-512 based password encryption.
773 Implemented by Ulrich Drepper.
775 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
776 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
777 yo_NG.
779 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
780 Implemented by Ulrich Drepper.
781 \f
782 Version 2.6
784 * The following bugs are resolved with this release:
786 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
787 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
788 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
789 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
790 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
791 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
792 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
793 4702, 4858
795 * New Linux interfaces: epoll_pwait, sched_getcpu.
797 * New generic interfaces: strerror_l.
799 * nscd can now cache the services database. Implemented by Ulrich Drepper.
800 \f
801 Version 2.5
803 * The following bugs are resolved with this release:
805 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
806 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
807 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
808 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
809 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
810 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
811 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
812 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
813 3225, 3251, 3252, 3253, 3273
815 * For Linux, the sorting of addresses returned by getaddrinfo now also
816 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
817 Implemented by Ulrich Drepper.
819 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
820 Implemented by Ulrich Drepper.
822 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
824 * New iconv module for MIK. Contributed by Alexander Shopov.
826 * For sites with broken group and/or passwd database, the auto-propagate
827 option of nscd can prevent creating ID lookup entries from the results
828 of a name lookup and vice versa. This usually is no problem but some
829 site might have problems with the default behavior.
830 Implemented by Ulrich Drepper.
832 * Iterating over entire database in NIS can be slow. With the
833 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
834 to trade time for memory. The entire database will be read at once.
835 Implemented by Ulrich Drepper.
837 * The interfaces introduced in RFC 3542 have been implemented by
838 Ulrich Drepper.
840 * Support for the new ELF hash table format was added by Ulrich Drepper.
842 * Support for priority inheritance mutexes added by Jakub Jelinek and
843 Ulrich Drepper.
845 * Support for priority protected mutexes added by Jakub Jelinek.
847 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
848 or_IN, csb_PL, fy_NL, sr_ME.
849 \f
850 Version 2.4
852 * More overflow detection functions.
854 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
855 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
857 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
858 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
859 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
860 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
861 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
862 by Masahide Washizawa.
864 * It is now possible to install audit libraries for the dynamic linker using
865 LD_AUDIT. Implemented by Ulrich Drepper.
867 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
868 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
869 For a libc and libpthread that works well on Linux 2.4 kernels, we
870 recommend using the stable 2.3 branch.
872 * The new function open_wmemstream acts like open_memstream,
873 but uses a wchar_t wide character buffer.
875 * The new function ppoll is an improved version of poll, similar to pselect.
877 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
878 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
879 renameat, unlinkat, linkat, symlinkat, readlinkat.
881 * New Linux kernel system calls: unshare,
882 inotify_init, inotify_add_watch, inotify_rm_watch.
884 * The euidaccess function is now also known by the alias eaccess,
885 for compatibility with some other systems.
887 * Timezone data updated to 2006b version.
888 \f
889 Version 2.3.6
891 * The following bugs are resolved with this release:
893 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
894 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
895 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
896 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
897 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
898 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
900 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
902 * As of this release, GCC 4 can be used to compile the C Library.
904 * Timezone data updated to 2005m version.
905 \f
906 Version 2.3.5
908 * The following bugs are resolved with this release:
910 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
911 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
912 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
913 777, 787, 821, 822, 823, 825
915 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
916 \f
917 Version 2.3.4
919 * Support for RFC 3678. Real implementations exist only for Linux so far.
920 Implemented by Ulrich Drepper.
922 * nscd can now cache entries persistently. Expiring entries are reloaded.
923 For speedups the cache can be shared in memory with client processes.
924 Implemented by Ulrich Drepper.
926 * nscd can now perform SELinux checks.
927 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
929 * getaddrinfo queries are now cached. Canonical name lookup is performed
930 efficiently.
931 Implemented by Ulrich Drepper.
933 * The nothrow function attribute is used when headers are used by gcc when
934 compiling C code. This can avoid significant amounts of exception
935 handling data.
937 * The malloc functions perform more error checking and are stricter when
938 it comes to reacting on errors. The default action is to terminate
939 the process after showing an error message. Implemented by Ulrich Drepper.
941 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
942 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
944 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
945 namespaces using the new function dlmopen(). This feature is of course,
946 like most other dynamic loading functionality, not available in statically
947 linked applications. Implemented by Ulrich Drepper.
949 * Low-overhead boundary checking variants of string and some stdio functions
950 were added. These are to be used in conjunction with a gcc patch by
951 Jakub Jelinek which adds calls to these functions if possible.
952 Implemented by Jakub Jelinek and Ulrich Drepper.
954 * Old code for several operating systems and machine architectures that
955 have not been in working condition in a long time have been removed from
956 the main source tree maintained by the GNU C Library's maintainers.
957 These files are now reside in the separate `ports' source module
958 that is usable as an add-on when building the library.
959 \f
960 Version 2.3.3
962 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
963 interrogate the dynamic linker, compatible with the Solaris interface.
965 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
966 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
968 * getifaddrs now uses the netlink interface on Linux to get its information.
969 Implemented by Thorsten Kukuk.
971 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
972 Implemented by Ulrich Drepper.
974 * support for non-executable stacks on x86 has been added. Changes mostly
975 by Roland McGrath.
977 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
978 and Ulrich Drepper.
980 * getaddrinfo now performs destination address selection according to
981 RFC 3484.
982 \f
983 Version 2.3.2
985 * Thread-safe interfaces for many functions that access locale data
986 were added in version 2.3, but these features were omitted from NEWS.
987 Many functions have variants with an `_l' suffix that take a `locale_t'
988 object as a parameter rather than consulting the current locale.
989 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
990 create and maintain `locale_t' objects. Additionally, the new function
991 `uselocale' sets "the current locale" (as used by functions not so
992 parameterized) set for an individual thread. These features were added
993 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
995 * The functions getresuid, getresgid, setresuid, and setresgid, which
996 have long been available on Linux, are now declared in <unistd.h>
997 and are now also available on the Hurd.
999 * ELF thread-local storage support (TLS) now works on x86-64.
1001 * The new dynamic string token $LIB is expanded in shared library names.
1002 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
1004 * Aldy Hernandez contributed complete software floating point support for
1005 PowerPC machines with no FPU.
1007 * fexecve is implemented on Linux.
1009 * The `btowc' function should work at least twice as fast due to
1010 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
1012 * With approriate thread add-ons cancelable functions are now implemented
1013 in libc.so as well. No need to call the function in libpthread. This
1014 change allowed to finally disable the incorrect and expensive handling
1015 of weak definition in ld.so.
1017 * Yet more PLT entries in libc.so have been removed. We finally arrived
1018 at the bare minimum. Startup times improved appropriately.
1020 * Support for the new Linux/x86 system call interface was added. The
1021 AT_SYSINFO auxiliary vector entry is recognized and handled.
1022 \f
1023 Version 2.3
1025 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
1026 charsets.
1028 * iconv (the program and the interface) now accepts empty names (excluding
1029 options like //TRANSLIT) to mean "use charset of current locale".
1031 * localedef can now transliterate characters in strings which are not in
1032 the provided charmap. The information from the input locale is used.
1034 * Prelinking support was added for ELF targets. This requires additional
1035 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
1037 * Read-only stdio streams now use mmap to speed up operation by eliminating
1038 copying and buffer underflows. To use add 'm' to the mode string of
1039 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
1041 * The malloc functions were completely rewritten by Wolfram Gloger based
1042 on Doug Lea's malloc-2.7.0.c.
1044 * Isamu Hasegawa contributed a completely new and POSIX-conformant
1045 implementation of regex.
1047 * Bruno Haible upgraded the iconv and locale implementation to support
1048 Unicode 3.2.
1050 * Contents of the LC_* and LANG environment variables in the CEN style are
1051 not recognized anymore. It never was used. Change by Ulrich Drepper.
1053 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
1054 thread-local storage (TLS) ABI on some platforms.
1055 Changes by Ulrich Drepper. SH support by Kaz Kojima.
1057 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
1058 EUC-JISX0213, and TSCII.
1060 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
1061 BSD-compatible interface for getting all network interface addresses.
1062 Implementation for IPv4 by Roland McGrath.
1064 * Loading of locale data is faster due to the introduction of a locale
1065 archive. Implemented by Roland McGrath and Ulrich Drepper.
1067 * Startup times are significantly reduced by not using exported functions
1068 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1069 and Ulrich Drepper.
1071 * Steven Munroe contributed a port to PowerPC64/Linux.
1072 \f
1073 Version 2.2.6
1075 * The Hurd now uses the GNU libio implementation of stdio rather than the
1076 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1078 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1079 with the same behavior as the Linux system call of the same name.
1080 \f
1081 Version 2.2.5
1083 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1084 128-bit long double format.
1086 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1087 IBM1161, and IBM1162 charsets.
1089 * Andreas Jaeger contributed a port to x86-64/Linux.
1091 * Peter Bruin contributed a port to PowerPC/Hurd.
1093 * libc functions using I/O streams now can handle wide-oriented streams
1094 as well.
1096 * optimizations in the dynamic linker. Binaries created by recent binutils
1097 versions start up quicker due to reduced time spent on relocations.
1099 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1100 \f
1101 Version 2.2.4
1103 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1104 asinh, atanh, j0 for the 128-bit long double format.
1106 * Bruno Haible updated all the code handling Unicode in some form to
1107 support Unicode 3.1.
1109 * Speed of regex for single-byte locales is back to previous levels.
1110 Patch by Isamu Hasegawa.
1112 * Alpha, SPARC, and IA-64 now also using floating stacks.
1114 * Startup time of internationalized applications greatly improved through
1115 iconv cache. Use iconvconfig to generate the cache file.
1116 Contributed by Ulrich Drepper.
1118 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1119 severe performance problems. Patch by David Mosberger.
1121 * The Hurd port got a lot more functionality like AIO, various stdio
1122 extensions, etc. Mainly done by Roland McGrath.
1124 * mtrace can now lookup symbols in shared libraries.
1125 \f
1126 Version 2.2.3
1128 * Intel's IA-64 math library is largely integrated. It provides fast and
1129 accurate implementatations for most basic and standard math functions
1130 in float, double, and long double format.
1132 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1133 and asin for the 96-bit long double format and asin, log, tan for the
1134 128-bit long double format.
1136 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1137 The basic double functions exist today. Contributed by Abraham Ziv
1138 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1139 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1141 * An asynchronous name lookup library was added. The interface is designed
1142 after POSIX AIO. The proposal was circulated beforehand to get comments.
1143 No negative ones came in. Implemented by Ulrich Drepper.
1145 * Port to S390/64bit contributed by Martin Schwidefsky
1146 <schwidefsky@de.ibm.com>.
1148 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1149 of functions for Linux/IA-64.
1151 * The RPC code is now thread safe. Threads can now use the same service
1152 of different services at the same time. Patch by Eric Norum
1153 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1155 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1156 family of functions for Linux/S390.
1158 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1159 of functions for Linux/x86.
1161 * Port to Linux/CRIS contributed by Axis Communications.
1162 \f
1163 Version 2.2.2
1165 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1166 we can now check for namespace violations and missing declarations. The
1167 result is that almost all headers are now Unix-compliant (as defined in
1168 the upcoming XPG6). The negative side is that some programs might need
1169 corrections, too, if they depend on the incorrect form of the headers in
1170 previous versions which defined too many symbols and included too many
1171 other headers.
1173 * regex now handles multibyte character sets correctly.
1174 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1176 * iconv (the program) does now conform to the upcoming XPG6 and handles
1177 charmaps. Instead of the charset names the path of charmaps can be
1178 provided and the conversion happens based on this data.
1179 Contributed by Ulrich Drepper.
1181 * The locale program now provides detailed information about the installed
1182 locales. While
1184 locale -a
1186 only lists the names of the supported locales
1188 locale -a --verbose
1190 provides details such as country, language, and codeset name.
1191 Contributed by Ulrich Drepper.
1192 \f
1193 Version 2.2.1
1195 * The gencat program now parses the input file according to the charset
1196 selected by the LC_CTYPE category. This is important for stateful
1197 character sets. To make generating catalogs easier there is a way
1198 to overwrite the charset selected by the locale: before the first
1199 message or $ quote line the catalog can contain a line like
1201 $ codeset=ISO-8859-2
1203 to select the charset (ISO-8859-2 in this case).
1205 Implemented by Shinya Hanataka and Ulrich Drepper.
1207 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1208 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1209 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1211 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1212 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1214 * The LANGUAGE environment variable is now ignored unless the locale is
1215 changed from the default "C" locale.
1217 * The usual bug fixes.
1218 \f
1219 Version 2.2
1221 * Greg McGary added runtime support for bounds checking using gcc's
1222 new -fbounded-pointers option. ix86 target is complete. PowerPC
1223 is in progress.
1225 * Thorsten Kukuk added secure mode support to nscd.
1227 * The Berkeley db libraries have been removed.
1229 Related, the nss_db module is now in a separate package since it
1230 obviously requires a database library being available.
1232 * Wide character I/O streams implemented by Ulrich Drepper.
1234 * Functions from the extended socket API added by Ulrich Drepper.
1236 * Functions feenableexcept and fedisableexcept to control the
1237 behaviour of individual exceptions have been added by Andreas Jaeger.
1239 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1241 * The resolver code has been updated from bind 8.2.3-T5B which supports
1242 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1243 and Mark Kettenis.
1245 This change could in some situations effect backward compatibility. Since
1246 now `_res' is a thread-local instead of a global variable, modifying it
1247 in one thread does not have any effect in other threads.
1249 The resolver library was also extended to allow IPv6 as the transport
1250 protocol for the requests. This work was done by Stig Venaas.
1252 * Compatibility code for K&R C compilers has been removed from the
1253 header files. A ISO C compiler is needed to use the library
1254 (conforming to either C89 or C99 standard).
1256 * Complete rewrite of the localedef program to support multibyte character
1257 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1258 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1259 Implemented by Ulrich Drepper.
1261 Bruno Haible significantly improved the generation and use of the data
1262 structures for the wide character tables.
1264 * Plural handling in gettext implemented by Ulrich Drepper.
1266 * The utmp daemon has been removed.
1268 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1270 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1271 and Yutaka Niibe.
1273 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1275 * POSIX barriers implemented by Kaz Kylheku.
1277 * POSIX spawn function family implemented by Ulrich Drepper.
1279 * POSIX spinlocks are now available.
1281 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1283 * the configure option --enable-kernel=X.Y.Z allows to strip out
1284 compatibility for kernel versions before X.Y.Z. This is currently only
1285 implemented for Linux.
1287 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1288 field sin6_scope_id. This means that all programs using IPv6 should be
1289 recompiled. Don't expect binary compatibility with previous glibc
1290 versions.
1292 * various conversion modules for IBM character sets contributed by
1293 Masahide Washizawa.
1295 * IA-64 port by Jes Sorensen and HJ Lu.
1296 \f
1297 Version 2.1.3
1299 * bug fixes
1301 \f
1302 Version 2.1.2
1304 * bug fixes
1306 \f
1307 Version 2.1.1
1309 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1311 * New xdr functions are added; some rpc functions are now 64bit clean.
1313 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1315 * Fixed known incompatibilities with glibc 2.0.
1317 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1319 * Optimized a number of functions (especially the ELF dynamic loader).
1321 * Update timezone data files.
1323 * lots of charmaps corrections
1325 * some new locale definitions and charmaps
1327 \f
1328 Version 2.1
1330 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1331 conform to POSIX member type requirements. Symbol versions have been
1332 adjusted as needed within the library, and for direct use by applications,
1333 but there is potential for problems if third-party libraries use
1334 struct timeval as part of their interface. This does not present
1335 a problem for X and other "essential" system libraries.
1337 * An additional locale model to support C++ Standard Library locale
1338 model and probably more was implemented by Ulrich Drepper.
1340 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1341 symbol level.
1343 * Miles Bader provided the `argp' function family to support hierachical
1344 command line argument parsing, layered on top of getopt.
1346 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1348 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1349 numbers.
1351 * scanf recognizes the %a and %A format for scanning floating point numbers.
1353 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1354 information and interfaces for the available integer types.
1356 * about 130 new math functions were added to implement the ISO C9x math
1357 library.
1359 * the new header <complex.h> contains definitions of the complex math
1360 functions from ISO C 9X.
1362 * the new header <tgmath.h> defines generic macros to use complex or
1363 real valued functions.
1365 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1367 * Andreas Jaeger provided a test suite for the math library.
1369 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1371 * Ulrich Drepper added character set conversion functions (iconv).
1373 * Optimized string functions have been added.
1375 * The localedata addon is now part of glibc.
1377 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1379 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1380 daemon for NSS (nscd).
1382 Missing a better place here are some numbers on improvements. Under
1383 Linux 2.1.125 un-tar-ing the kernel sources takes
1385 user system wall
1387 using local files 12.19s 6.88s 22.91s
1389 using NIS 13.92s 8.91s 26.34s
1391 using NIS & nscd 10.37s 7.34s 25.30s
1393 using NIS+ 27.57s 30.37s 640.46s
1395 using NIS+ & nscd 10.25s 7.83s 26.51s
1397 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1399 Keep in mind that non-namelookup related operations dominate above times.
1400 It was just a common complain that using NIS+ unpacking the kernel is
1401 horribly slow.
1403 [1] The old nscd implementation is not available anymore since it was
1404 distributed with glibc up to version 2.0.98 and thus is now replaced.
1406 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1408 * Mark Kettenis provided a Hesiod NSS module.
1410 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1411 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1413 * rcmd can now handle netgroups (Dick Streefland).
1415 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1416 Bambrough.
1418 * Support for the IPv6 protocol has been added to the socket API, as per the
1419 latest draft standards.
1421 * Support for Linux 2.2 has been added.
1423 * Interface changes relative to the latest 2.0.x release:
1424 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1425 addseverity NEW: Unix98
1426 alphasort64 NEW: LFS
1427 argp_err_exit_status NEW: argp, GNU ext
1428 argp_error NEW: argp, GNU ext
1429 argp_failure NEW: argp, GNU ext
1430 argp_help NEW: argp, GNU ext
1431 argp_parse NEW: argp, GNU ext
1432 argp_program_bug_address NEW: argp, GNU ext
1433 argp_program_version NEW: argp, GNU ext
1434 argp_program_version_hook NEW: argp, GNU ext
1435 argp_state_help NEW: argp, GNU ext
1436 argp_usage NEW: argp, GNU ext
1437 authdes_create NEW: Secure RPC
1438 authdes_getucred NEW: Secure RPC
1439 authdes_pk_create NEW: Secure RPC
1440 backtrace NEW: GNU ext.
1441 backtrace_symbols NEW: GNU ext.
1442 backtrace_symbols_fd NEW: GNU ext.
1443 cacos NEW: ISO C 9x
1444 cacosf NEW: ISO C 9x
1445 cacosh NEW: ISO C 9x
1446 cacoshf NEW: ISO C 9x
1447 cacoshl NEW: ISO C 9x
1448 cacosl NEW: ISO C 9x
1449 capget NEW: kernel
1450 capset NEW: kernel
1451 carg NEW: ISO C 9x
1452 cargf NEW: ISO C 9x
1453 cargl NEW: ISO C 9x
1454 casin NEW: ISO C 9x
1455 casinf NEW: ISO C 9x
1456 casinh NEW: ISO C 9x
1457 casinhf NEW: ISO C 9x
1458 casinhl NEW: ISO C 9x
1459 casinl NEW: ISO C 9x
1460 catan NEW: ISO C 9x
1461 catanf NEW: ISO C 9x
1462 catanh NEW: ISO C 9x
1463 catanhf NEW: ISO C 9x
1464 catanhl NEW: ISO C 9x
1465 catanl NEW: ISO C 9x
1466 cbc_crypt NEW: Secure RPC
1467 ccos NEW: ISO C 9x
1468 ccosf NEW: ISO C 9x
1469 ccosh NEW: ISO C 9x
1470 ccoshf NEW: ISO C 9x
1471 ccoshl NEW: ISO C 9x
1472 ccosl NEW: ISO C 9x
1473 cexp NEW: ISO C 9x
1474 cexpf NEW: ISO C 9x
1475 cexpl NEW: ISO C 9x
1476 cimag NEW: ISO C 9x
1477 cimagf NEW: ISO C 9x
1478 cimagl NEW: ISO C 9x
1479 clearerr_locked REMOVED
1480 clntunix_create NEW: sunrpc ext
1481 clog NEW: ISO C 9x
1482 clog10 NEW: ISO C 9x
1483 clog10f NEW: ISO C 9x
1484 clog10l NEW: ISO C 9x
1485 clogf NEW: ISO C 9x
1486 clogl NEW: ISO C 9x
1487 conj NEW: ISO C 9x
1488 conjf NEW: ISO C 9x
1489 conjl NEW: ISO C 9x
1490 cpow NEW: ISO C 9x
1491 cpowf NEW: ISO C 9x
1492 cpowl NEW: ISO C 9x
1493 cproj NEW: ISO C 9x
1494 cprojf NEW: ISO C 9x
1495 cprojl NEW: ISO C 9x
1496 creal NEW: ISO C 9x
1497 crealf NEW: ISO C 9x
1498 creall NEW: ISO C 9x
1499 creat64 NEW: LFS
1500 csin NEW: ISO C 9x
1501 csinf NEW: ISO C 9x
1502 csinh NEW: ISO C 9x
1503 csinhf NEW: ISO C 9x
1504 csinhl NEW: ISO C 9x
1505 csinl NEW: ISO C 9x
1506 csqrt NEW: ISO C 9x
1507 csqrtf NEW: ISO C 9x
1508 csqrtl NEW: ISO C 9x
1509 ctan NEW: ISO C 9x
1510 ctanf NEW: ISO C 9x
1511 ctanh NEW: ISO C 9x
1512 ctanhf NEW: ISO C 9x
1513 ctanhl NEW: ISO C 9x
1514 ctanl NEW: ISO C 9x
1515 des_setparity NEW: Secure RPC
1516 ecb_crypt NEW: Secure RPC
1517 endutxent NEW: Unix98
1518 exp10 NEW: ISO C 9x
1519 exp10f NEW: ISO C 9x
1520 exp10l NEW: ISO C 9x
1521 exp2 NEW: ISO C 9x
1522 exp2f NEW: ISO C 9x
1523 exp2l NEW: ISO C 9x
1524 fattach NEW: STREAMS
1525 fdetach NEW: STREAMS
1526 fdim NEW: ISO C 9x
1527 fdimf NEW: ISO C 9x
1528 fdiml NEW: ISO C 9x
1529 feclearexcept NEW: ISO C 9x
1530 fegetenv NEW: ISO C 9x
1531 fegetexceptflag NEW: ISO C 9x
1532 fegetround NEW: ISO C 9x
1533 feholdexcept NEW: ISO C 9x
1534 feof_locked REMOVED
1535 feraiseexcept NEW: ISO C 9x
1536 ferror_locked REMOVED
1537 fesetenv NEW: ISO C 9x
1538 fesetexceptflag NEW: ISO C 9x
1539 fesetround NEW: ISO C 9x
1540 fetestexcept NEW: ISO C 9x
1541 feupdateenv NEW: ISO C 9x
1542 fflush_locked REMOVED
1543 ffsl NEW: GNU ext.
1544 ffsll NEW: GNU ext.
1545 fgetpos64 NEW: LFS
1546 fgets_unlocked NEW: GNU ext.
1547 fileno_locked REMOVED
1548 fma NEW: ISO C 9x
1549 fmaf NEW: ISO C 9x
1550 fmal NEW: ISO C 9x
1551 fmax NEW: ISO C 9x
1552 fmaxf NEW: ISO C 9x
1553 fmaxl NEW: ISO C 9x
1554 fmin NEW: ISO C 9x
1555 fminf NEW: ISO C 9x
1556 fminl NEW: ISO C 9x
1557 fmtmsg NEW: Unix98
1558 fopen64 NEW: LFS
1559 fputc_locked REMOVED
1560 fputs_unlocked NEW: GNU ext.
1561 fread_unlocked NEW: GNU ext.
1562 freopen64 NEW: LFS
1563 fseeko NEW: Unix98
1564 fsetpos64 NEW: LFS
1565 fstatfs64 NEW: LFS
1566 fstatvfs NEW: Unix98
1567 fstatvfs64 NEW: LFS
1568 ftello NEW: Unix98
1569 ftello64 NEW: LFS
1570 ftruncate64 NEW: LFS
1571 ftw64 NEW: LFS
1572 fwrite_unlocked NEW: GNU ext.
1573 gai_strerror NEW: IPv6
1574 gamma_r REMOVED
1575 gammaf_r REMOVED
1576 gammal_r REMOVED
1577 getchar_locked REMOVED
1578 getdate NEW: Unix98
1579 getdate_err NEW: Unix98
1580 getdate_r NEW: GNU ext.
1581 getmsg NEW: STREAMS
1582 getnameinfo NEW: IPv6
1583 getnetname NEW: Secure RPC
1584 getpmsg NEW: STREAMS
1585 getpt NEW: Unix98 PTY
1586 getrlimit64 NEW: LFS
1587 getutxent NEW: Unix98
1588 getutxid NEW: Unix98
1589 getutxline NEW: Unix98
1590 glob64 NEW: GNU ext.
1591 globfree64 NEW: GNU ext.
1592 gnu_get_libc_release NEW: GNU ext.
1593 gnu_get_libc_version NEW: GNU ext.
1594 grantpt NEW: Unix98 PTY
1595 host2netname NEW: Secure RPC
1596 iconv NEW: iconv
1597 iconv_close NEW: iconv
1598 iconv_open NEW: iconv
1599 if_freenameindex NEW: IPv6
1600 if_indextoname NEW: IPv6
1601 if_nameindex NEW: IPv6
1602 if_nametoindex NEW: IPv6
1603 in6addr_any NEW: IPv6
1604 in6addr_loopback NEW: IPv6
1605 inet6_isipv4mapped NEW: IPv6
1606 isastream NEW: STREAMS
1607 iswblank NEW: GNU ext.
1608 key_decryptsession NEW: Secure RPC
1609 key_decryptsession_pk NEW: Secure RPC
1610 key_encryptsession NEW: Secure RPC
1611 key_encryptsession_pk NEW: Secure RPC
1612 key_gendes NEW: Secure RPC
1613 key_get_conv NEW: Secure RPC
1614 key_secretkey_is_set NEW: Secure RPC
1615 key_setnet NEW: Secure RPC
1616 key_setsecret NEW: Secure RPC
1617 llrint NEW: ISO C 9x
1618 llrintf NEW: ISO C 9x
1619 llrintl NEW: ISO C 9x
1620 llround NEW: ISO C 9x
1621 llroundf NEW: ISO C 9x
1622 llroundl NEW: ISO C 9x
1623 log2 NEW: ISO C 9x
1624 log2f NEW: ISO C 9x
1625 log2l NEW: ISO C 9x
1626 lrint NEW: ISO C 9x
1627 lrintf NEW: ISO C 9x
1628 lrintl NEW: ISO C 9x
1629 lround NEW: ISO C 9x
1630 lroundf NEW: ISO C 9x
1631 lroundl NEW: ISO C 9x
1632 lseek64 NEW: LFS
1633 makecontext NEW: Unix98
1634 mempcpy NEW: GNU ext.
1635 mmap64 NEW: LFS
1636 moncontrol REMOVED
1637 modify_ldt NEW: kernel
1638 nan NEW: ISO C 9x
1639 nanf NEW: ISO C 9x
1640 nanl NEW: ISO C 9x
1641 nearbyint NEW: ISO C 9x
1642 nearbyintf NEW: ISO C 9x
1643 nearbyintl NEW: ISO C 9x
1644 netname2host NEW: Secure RPC
1645 netname2user NEW: Secure RPC
1646 nexttoward NEW: ISO C 9x
1647 nexttowardf NEW: ISO C 9x
1648 nexttowardl NEW: ISO C 9x
1649 nftw NEW: Unix98
1650 nftw64 NEW: LFS
1651 open64 NEW: LFS
1652 passwd2des NEW: Secure RPC
1653 pow10 NEW: GNU ext.
1654 pow10f NEW: GNU ext.
1655 pow10l NEW: GNU ext.
1656 pread NEW: Unix98
1657 pread64 NEW: LFS
1658 printf_size NEW: GNU ext.
1659 printf_size_info NEW: GNU ext.
1660 profil_counter REMOVED
1661 pthread_mutexattr_getkind_np REPLACED
1662 pthread_mutexattr_setkind_np REPLACED
1663 ptsname NEW: Unix98 PTY
1664 ptsname_r NEW: Unix98 PTY
1665 putc_locked REMOVED
1666 putchar_locked REMOVED
1667 putgrent NEW: GNU ext.
1668 putmsg NEW: STREAMS
1669 putpmsg NEW: STREAMS
1670 pututxline NEW: Unix98
1671 pwrite NEW: Unix98
1672 pwrite64 NEW: LFS
1673 readdir64 NEW: LFS
1674 readdir64_r NEW: LFS
1675 remquo NEW: ISO C 9x
1676 remquof NEW: ISO C 9x
1677 remquol NEW: ISO C 9x
1678 round NEW: ISO C 9x
1679 roundf NEW: ISO C 9x
1680 roundl NEW: ISO C 9x
1681 rtime NEW: GNU ext.
1682 scalbln NEW: ISO C 9x
1683 scalblnf NEW: ISO C 9x
1684 scalblnl NEW: ISO C 9x
1685 scandir64 NEW: LFS
1686 sendfile NEW: kernel
1687 setcontext NEW: Unix98
1688 setrlimit64 NEW: LFS
1689 setutxent NEW: Unix98
1690 sighold NEW: Unix98
1691 sigignore NEW: Unix98
1692 sigqueue NEW: POSIX.1b
1693 sigrelse NEW: Unix98
1694 sigset NEW: POSIX.1b
1695 sigtimedwait NEW: POSIX.1b
1696 sigwaitinfo NEW: POSIX.1b
1697 sincos NEW: GNU ext.
1698 sincosf NEW: GNU ext.
1699 sincosl NEW: GNU ext.
1700 statfs64 NEW: LFS
1701 statvfs NEW: Unix98
1702 statvfs64 NEW: LFS
1703 strcasestr NEW: GNU ext.
1704 strtoimax NEW: ISO C 9x
1705 strtoumax NEW: ISO C 9x
1706 strverscmp NEW: GNU ext.
1707 svcauthdes_stats NEW: Secure RPC
1708 svcunix_create NEW: sunrpc etx
1709 svcunixfd_create NEW: sunrpc ext
1710 swapcontext NEW: Unix98
1711 tcgetsid NEW: Unix98 PTY
1712 tdestroy NEW: GNU ext.
1713 tgamma NEW: ISO C 9x
1714 tgammaf NEW: ISO C 9x
1715 tgammal NEW: ISO C 9x
1716 tmpfile64 NEW: LFS
1717 trunc NEW: ISO C 9x
1718 truncate64 NEW: LFS
1719 truncf NEW: ISO C 9x
1720 truncl NEW: ISO C 9x
1721 umount2 NEW: kernel
1722 unlockpt NEW: Unix98 PTY
1723 updwtmpx NEW: Unix98
1724 user2netname NEW: Secure RPC
1725 utmpxname NEW: Unix98
1726 versionsort NEW: GNU ext.
1727 versionsort64 NEW: GNU ext.
1728 waitid NEW: Unix98
1729 wcscasecmp NEW: GNU ext.
1730 wcsncasecmp NEW: GNU ext.
1731 wcsnlen NEW: GNU ext.
1732 wcstoimax NEW: ISO C 9x
1733 wcstoll NEW: ISO C 9x
1734 wcstoull NEW: ISO C 9x
1735 wcstoumax NEW: ISO C 9x
1736 wcswcs NEW: Unix98
1737 wordexp NEW: POSIX.2
1738 wordfree NEW: POSIX.2
1739 write_profiling REMOVED
1740 xdecrypt NEW: Secure RPC
1741 xdr_authdes_cred NEW: Secure RPC
1742 xdr_authdes_verf NEW: Secure RPC
1743 xdr_cryptkeyarg NEW: Secure RPC
1744 xdr_cryptkeyarg2 NEW: Secure RPC
1745 xdr_cryptkeyres NEW: Secure RPC
1746 xdr_getcredres NEW: Secure RPC
1747 xdr_key_netstarg NEW: Secure RPC
1748 xdr_key_netstres NEW: Secure RPC
1749 xdr_keybuf NEW: Secure RPC
1750 xdr_keystatus NEW: Secure RPC
1751 xdr_netnamestr NEW: Secure RPC
1752 xdr_sizeof NEW: Secure RPC
1753 xdr_unixcred NEW: sunrpc ext
1754 xencrypt NEW: Secure RPC
1755 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1756 \f
1757 Version 2.0.6
1759 * more bug fixes
1761 \f
1762 Version 2.0.5
1764 * more bug fixes
1766 * inet_ntoa is thread-safe
1768 * updwtmp is moved from libutil to libc
1770 * rewrite of cbrt function
1772 * update of timezone data
1773 \f
1774 Version 2.0.4
1776 * more bug fixes
1777 \f
1778 Version 2.0.3
1780 * more bug fixes
1781 \f
1782 Version 2.0.2
1784 * more bug fixes
1786 * add atoll function
1788 * fix complex problems in Berkeley DB code
1790 * fix math functions
1791 \f
1792 Version 2.0.1
1794 * fixed lots of header problems (especially Linux/GNU specific)
1796 * dynamic loader preserves all registers
1798 * Roland McGrath provided support for handling of auxiliary objects in
1799 the ELF dynamic loader.
1801 * support for parallel builds is improved
1802 \f
1803 Version 2.0
1805 * GNU extensions are no longer declared by default. To enable them you
1806 must define the macro `_GNU_SOURCE' in your program or compile with
1807 `-D_GNU_SOURCE'.
1809 * The library has changed from using GNU ld symbol aliases to using weak
1810 symbols where available. The ELF object file format supports weak
1811 symbols; GNU ld also supports weak symbols in the a.out format. (There
1812 is also now support for other GNU ld extensions in ELF. Use the
1813 `--with-elf' option to configure to indicate you have ELF, and
1814 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1815 of many files which contained only symbol aliases, reducing the size of
1816 the source and the compiled library; many other files were renamed to
1817 less cryptic names previously occupied by the symbol alias files.
1818 There is a new header file <elf.h> for programs which operate on
1819 files in the ELF format.
1821 * Converted to Autoconf version 2, so `configure' has more options.
1822 Run `configure --help' to see the details.
1824 * The library can now be configured to build profiling, highly-optimized
1825 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1826 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1827 `configure' enable building these extra libraries. The shared library is
1828 built by default when using both ELF and GNU ld. When shared libraries
1829 are enabled, the new library `-ldl' is available for arbitrary run-time
1830 loading of shared objects; its interface is defined in <dlfcn.h>. The
1831 new header file <link.h> gives access to the internals of the run-time
1832 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1833 application of same name on other systems and it provides information
1834 about dynamically linked binaries.
1836 * The C library now provides the run-time support code for profiling
1837 executables compiled with `-pg'. Programs can control the profiling code
1838 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1839 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1840 the support for this file format was contributed by David Mosberger-Tang.
1842 * The math code has been replaced with a math library based on fdlibm from
1843 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1844 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1845 functions. The math functions now reside in a separate library, so
1846 programs using them will need to use `-lm' their linking commands.
1848 * John C. Bowman contributed optimized ix87 assembler inline functions.
1850 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1851 mechanism similar to that found in Solaris 2. This is now used for the
1852 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1853 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1854 file controls what services are used for each individual database. This
1855 works by loading shared libraries with names specified in `nsswitch.conf',
1856 so service modules can be changed or added at any time without even
1857 relinking any program. Currently there are the file, db, and NIS based
1858 NSS services available.
1860 * The new functions `strtoq' and `strtouq' parse integer values from
1861 strings, like `strtol' and `strtoul', but they return `long long int' and
1862 `unsigned long long int' values, respectively (64-bit quantities).
1864 * The new functions `strtof' and `strtold' parse floating-point values from
1865 strings, like `strtod', but they return `float' and `long double' values,
1866 respectively (on some machines `double' and `long double' are the same).
1868 * Ulrich Drepper has contributed new implementations of the floating-point
1869 printing and reading code used in the `printf' family of functions and
1870 `strtod', `strtof', and `strtold'. These new functions are perfectly
1871 accurate, and much faster than the old ones.
1873 * The implementation of the POSIX locale model was completely rewritten by
1874 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1875 to compile the POSIX locale definition.
1877 * The former dummy implementations of the strcoll and strxfrm function are
1878 now replaced by fully functional code contributed by Ulrich Drepper. The
1879 collation information comes from the POSIX locale definitions.
1881 * The new header <langinfo.h> defines an interface for accessing
1882 various locale-dependent data (using the locale chosen with `setlocale').
1884 * Ulrich Drepper has contributed a new suite of functions for operation on
1885 wide-character and multibyte-character strings, in <wchar.h>;
1886 and classification and case conversion of wide characters, in <wctype.h>.
1887 These new functions are conforming to the ISO C, Amendement 1 specification.
1889 * There is now a second implementation of the standard I/O library available.
1890 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1891 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1893 * You can now use positional parameter specifications in format strings
1894 for the `printf' and `scanf' families of functions. For example,
1895 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1896 ``Number 6, Mr Jones''. This is mainly useful when providing different
1897 format strings for different languages, whose grammars may dictate
1898 different orderings of the values being printed. To support this
1899 feature, the interface for `register_printf_handler' has changed; see
1900 the header file <printf.h> for details.
1902 * The `printf' and `scanf' families of functions now understand a new
1903 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1904 to group numbers as indicated by the locale; for `scanf' and friends, this
1905 says to accept as valid only a number with all the proper grouping
1906 separators in the right places. In the default "C" locale, numbers are
1907 not grouped; but locales for specific countries will define the usual
1908 conventions (i.e. separate thousands with `,' in the US locale).
1910 * The pgrp functions have been regularized, slightly incompatibly but much
1911 less confusingly. The core functions are now `getpgid' and `setpgid',
1912 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1913 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1914 provided for compatibility. There is no longer an incompatible `getpgrp'
1915 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1917 * The new header file <fts.h> and suite of functions simplify programs that
1918 operate on directory trees. This code comes from 4.4 BSD.
1920 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1921 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1922 NSS scheme used in glibc.
1924 * There is a new malloc debugging hook `__memalign_hook'.
1926 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1927 `unsigned int' in <sys/types.h>. These are for compatibility only and
1928 their use is discouraged.
1930 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1931 done differently, so that it works even without GNU ld.
1933 * New function `euidaccess' checks allowed access to a file like `access',
1934 but using the effective IDs instead of the real IDs.
1936 * The time zone data files have been updated for the latest and greatest
1937 local time conventions of the countries of the world.
1939 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1940 see <dirent.h>.
1942 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1943 for formatting floating-point numbers. They are provided only for
1944 compatibility; new programs should use `sprintf' instead. There are
1945 also equivalent function for the `long double' floating-point type and
1946 all functions also exist in a reentrant form.
1948 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1949 functions for maintaining the login-record files (primarily of use to
1950 system programs such as `login'), and convenient functions for
1951 allocating and initializing a pseudo-terminal (pty) device.
1953 * Ulrich Drepper has contributed new support for System V style
1954 shared memory and IPC on systems that support it.
1956 * Ulrich Drepper has contributed several miscellaneous new functions found
1957 in System V: The `hsearch' family of functions provide an effective
1958 implementation of hash tables; `a64l' and `l64a' provide a very simple
1959 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1960 number generator.
1962 * Ulrich Drepper has contributed new reentrant counterparts for the
1963 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1965 * Ulrich Drepper has contributed new, highly-optimized versions of several
1966 string functions for the i486/Pentium family of processors.
1968 * Ulrich Drepper has updated the Linux-specific code, based largely
1969 on work done in Hongjiu Lu's version of GNU libc for Linux.
1970 The GNU library now supports Linux versions 2.0.10 and later,
1971 using the ELF object file format (i[3456]86-*-linux).
1973 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1975 * David Mosberger-Tang and Richard Henderson have ported the C library
1976 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1977 dynamic linking support for ELF/Alpha.
1979 * Richard Henderson contributed several Alpha optimized assembler function
1980 for arithmetic and string handling.
1982 * Ulrich Drepper has contributed a new set of message catalog functions to
1983 support multiple languages using the <libintl.h> interface, for use with
1984 his new package GNU gettext. Translation volunteers have contributed
1985 catalogs of the library's messages in Spanish, German, and Korean.
1987 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1988 program and the `catgets' function for reading the catalog files it
1989 creates. (The <libintl.h> interface is preferred; we include the
1990 <nl_types.h> interface using `catgets' only for source compatibility with
1991 programs already written to use it.)
1993 * New header file <values.h> gives SVID-compatible names for <limits.h>
1994 constants.
1996 * Various new macros, declarations, and small header files for compatibility
1997 with 4.4 BSD.
1999 * New function `group_member' is a convenient way to check if a process has
2000 a given effective group ID.
2002 * When using GCC 2.7 and later, the socket functions are now declared in a
2003 special way so that passing an argument of type `struct sockaddr_in *',
2004 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
2005 `struct sockaddr *' type, does not generate a type-clash warning.
2007 * New function `error' declared in header file <error.h> is a convenient
2008 function for printing error messages and optionally exiting; this is the
2009 canonical function used in GNU programs. The new functions `err', `warn',
2010 and friends in header file <err.h> are the canonical 4.4 BSD interface for
2011 doing the same thing.
2013 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
2014 POSIX.2 `glob' function to do ~ and {...} expansion.
2016 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
2017 `clearenv' which is used in POSIX.9 is also available.
2019 * New function `getsid' returns session ID number on systems that support it.
2021 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
2022 files <db.h> and <mpool.h> provide a rich set of functions for several
2023 types of simple databases stored in memory and in files, and <ndbm.h> is
2024 an old `ndbm'-compatible interface using the `db' functions. Link with
2025 `-ldb' to get these functions.
2027 * New macro `strdupa' copies a string like `strdup', but uses local stack
2028 space from `alloca' instead of dynamic heap space from `malloc'.
2030 * New function `strnlen' is like `strlen' but searches only a given maximum
2031 number of characters for the null terminator. `stpncpy', `strndup' and
2032 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
2033 function.
2035 * New function `statfs' in header <sys/statfs.h>.
2037 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
2038 provide convenient functions for operating on blocks of null-terminated
2039 strings.
2041 * A new suite of functions in <utmp.h> handle all the details of reading
2042 and writing the utmp file.
2044 * An implementation of the NIS/YP(tm) based NSS service was contributed by
2045 Thorsten Kukuk.
2047 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
2048 completely POSIX compliant and also implemented the extended functionality
2049 to handle alternate digit representation and alternate era date formats.
2051 * Ulrich Drepper provided an implementation of the `strptime' function
2052 defined in XPG4.2 which transforms a string into a `struct tm' value.
2054 * Paul Eggert provided the tzselect shell script as part of the timezone
2055 code. The shell script makes it easy to select the correct timezone
2056 specification.
2058 * The implementation of the malloc family of functions is completely replaced
2059 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
2060 The implementation uses the mmap function (if available) and it is
2061 optimized for the use in multi threaded programs.
2063 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
2064 functions. This new functionality is usable by specifying a special
2065 salt string and it is compatible with implementation on *BSD systems.
2067 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
2068 `getsubopt' to handle second level command line options, `bsd_signal'
2069 to access BSD style `signal' functionality, the obsolete `regexp' style
2070 expression matcher.
2072 * the `lchown' function is available on system which support this
2073 functionality.
2075 * The implementation of the shadow password handling function was contributed
2076 by Ulrich Drepper.
2078 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2080 * POSIX.1g support was added. The <sys/select.h> header is available,
2081 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2082 implementation of `getaddrinfo'.
2083 \f
2084 Version 1.09
2086 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2088 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2089 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2091 * The new function `daemon' from 4.4 BSD is useful for server programs that
2092 want to put themselves in the background.
2094 * Joel Sherrill has contributed support for several standalone boards that
2095 run without an operating system.
2097 * `printf', `scanf' and friends now accept a `q' type modifier for long
2098 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2100 * All of the code taken from BSD (notably most of the math and networking
2101 routines) has been updated from the BSD 4.4-Lite release.
2103 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2105 * The new functions `getdomainname' and `setdomainname' fetch or change the
2106 YP/NIS domain name. These are system calls which exist on systems which
2107 have YP (aka NIS).
2109 * The time zone data files have been updated for the latest international
2110 conventions.
2112 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2113 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2114 \f
2115 Version 1.08
2117 * The C library now includes support for Sun RPC, from Sun's free
2118 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2119 are included. (There is still no support for YP.)
2121 * Tom Quinn has contributed a port of the C library to SGI machines running
2122 Irix 4 (mips-sgi-irix4).
2124 * The new `lockf' function is a simplified interface to the locking
2125 facilities of `fcntl', included for compatibility.
2127 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2129 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2131 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2132 compatibility.
2134 * The error message printed by `assert' for a failed assertion now includes
2135 the name of the program (if using GNU ld) and the name of the calling
2136 function (with versions of GCC that support this).
2138 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2140 * The library now includes the <sys/mman.h> header file and memory
2141 management functions `mmap', `munmap', `mprotect', `msync', and
2142 `madvise', on systems that support those facilities.
2144 * The interface for `mcheck' has changed slightly: the function called to
2145 abort the program when an allocation inconsistency is detected now takes
2146 an argument that indicates the type of failure. The new function
2147 `mprobe' lets you request a consistency check for a particular block at
2148 any time (checks are normally done only when you call `free' or `realloc'
2149 on a block).
2151 * It is now possible to easily cross-compile the C library, building on one
2152 system a library to run on another machine and/or operating system. All
2153 you need to do is set the variable `HOST_CC' in `configparms' to the
2154 native compiler for programs to run on the machine you are building on (a
2155 few generator programs are used on Unix systems); set `CC' to the
2156 cross-compiler.
2158 * The new function `fexecve' (only implemented on the GNU system) executes
2159 a program file given a file descriptor already open on the file.
2160 \f
2161 Version 1.07
2163 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2164 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2166 * You can set the variable `libprefix' in `configparms' to specify a prefix
2167 to be prepended to installed library files; this makes it easy to install
2168 the GNU C library to be linked as `-lgnuc' or whatever.
2170 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2171 copies a limited number of characters from a string, and returns the
2172 address of the last character written.
2174 * You no longer need to check for whether the installed `stddef.h' is
2175 compatible with the GNU C library. configure now checks for you.
2177 * You can now define a per-stream `fileno' function to convert the
2178 stream's cookie into an integral file descriptor.
2180 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2181 allocates zero bytes of storage, and returns a unique pointer which
2182 you can pass to `realloc' or `free'. The behavior is undefined if
2183 you dereference this pointer.
2185 * The C library now runs on Sony NEWS m68k machines running either
2186 NewsOS 3 or NewsOS 4.
2188 * The new `syscall' function is a system-dependent primitive function
2189 for invoking system calls. It has the canonical behavior on Unix
2190 systems, including unreliable return values for some calls (such as
2191 `pipe', `fork' and `getppid').
2193 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2194 to `EAGAIN', which is the preferred name. On systems whose kernels
2195 use two distinct codes, the C library now translates EWOULDBLOCK to
2196 EAGAIN in every system call function.
2197 \f
2198 Version 1.06
2200 * The GNU C Library Reference Manual is now distributed with the library.
2201 `make dvi' will produce a DVI file of the printed manual.
2202 `make info' will produce Info files that you can read on line using C-h i
2203 in Emacs or the `info' program.
2204 Please send comments on the manual to bug-glibc-manual@gnu.org.
2206 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2208 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2210 * Jason Merrill has contributed a port to the Sequent Symmetry running
2211 Dynix version 3 (i386-sequent-dynix).
2213 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2214 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2216 * New function `memory_warnings' lets you arrange to get warnings when
2217 malloc is running out of memory to allocate, like Emacs gives you.
2219 * The C library now contains the relocating allocator used in Emacs 19 for
2220 its editing buffers. This allocator (ralloc) minimizes allocation
2221 overhead and fragmentation by moving allocated regions around whenever it
2222 needs to. You always refer to a ralloc'd region with a "handle" (a
2223 pointer to a pointer--an object of type `void **').
2225 * There is a new `printf' format: `%m' gives you the string corresponding
2226 to the error code in `errno'.
2228 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2229 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2230 pass, the `a' modifier says to fill in a `char **' you pass with a
2231 malloc'd string.
2233 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2234 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2235 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2237 * `mkstemp' is a traditional Unix function to atomically create and open a
2238 uniquely-named temporary file.
2239 \f
2240 Version 1.05
2242 * The standard location for the file that says what the local timezone is
2243 has changed again. It is now `/usr/local/etc/localtime' (or more
2244 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2246 * The distribution no longer contains any files with names longer than 14
2247 characters.
2249 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2250 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2252 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2253 \f
2254 Version 1.04
2256 * The configuration process has changed quite a bit. The `configure'
2257 script is now used just like the configuration scripts for other GNU
2258 packages. The `sysdeps' directory hierarchy is much rearranged.
2259 The file `INSTALL' explains the new scheme in detail.
2261 * The header files no longer need to be processed into ANSI C and
2262 traditional C versions. There is just one set of files to install, and
2263 it will work with ANSI or old C compilers (including `gcc -traditional').
2265 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2266 MIPS DECStation running Ultrix 4.
2268 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2269 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2270 made itself into a shared library.
2272 * Yet further improved support for the i386, running 4.3 BSD-like systems
2273 (such as Mach 3 with the Unix single-server), or System V.
2275 * New function `strncasecmp' to do case-insensitive string comparison
2276 with limited length.
2278 * New function `strsep' is a reentrant alternative to `strtok'.
2280 * New functions `scandir' and `alphasort' for searching directories.
2282 * New function `setenv' is a better interface to `putenv'.
2284 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2285 function for traversing a directory tree.
2287 * The GNU obstack package is now also part of the C library.
2288 The new function `open_obstack_stream' creates a stdio stream that
2289 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2290 formatted output directly to an obstack.
2292 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2293 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2295 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2297 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2298 things to your strings.
2300 * There are some new test programs: test-fseek, testmb, and testrand.
2302 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2303 These ports are not finished, but are a good starting place for really
2304 supporting those systems.
2306 * `/etc/localtime' is now the standard location for the file that says what
2307 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2308 This follows the general principle that `/etc' is the place for all local
2309 configuration files.
2311 * The C library header files now use `extern "C"' when used by the C++
2312 compiler, so the C library should now work with C++ code.
2314 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2315 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2316 in <strings.h>.)
2318 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2319 function which uses the `merge sort' algorithm, and is said to be
2320 significantly faster than the old GNU `qsort' function. Merge sort is
2321 now the standard `qsort' function. The new algorithm can require a lot
2322 of temporary storage; so, the old sorting function is called when the
2323 required storage is not available.
2325 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2326 provides the Unix `crypt' function, plus some other entry points.
2328 * The code and header files taken from 4.4 BSD have been updated with the
2329 latest files released from Berkeley.
2330 \f
2331 ----------------------------------------------------------------------
2332 Copyright information:
2334 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2336 Permission is granted to anyone to make or distribute verbatim copies
2337 of this document as received, in any medium, provided that the
2338 copyright notice and this permission notice are preserved,
2339 thus giving the recipient permission to redistribute in turn.
2341 Permission is granted to distribute modified versions
2342 of this document, or of portions of it,
2343 under the above conditions, provided also that they
2344 carry prominent notices stating who last changed them.
2345 \f
2346 Local variables:
2347 version-control: never
2348 fill-column: 76
2349 End: