1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2013 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sourceware.org/bugzilla/>
6 using `glibc' in the "product" field.
10 * The following bugs are resolved with this release:
12 2546, 2560, 5159, 6809, 7006, 10060, 10062, 10283, 10357, 10686, 11120,
13 11561, 12310, 12387, 12492, 12515, 12723, 13550, 13889, 13951, 13988,
14 14142, 14176, 14200, 14256, 14280, 14293, 14317, 14327, 14478, 14496,
15 14582, 14686, 14812, 14888, 14894, 14907, 14908, 14909, 14920, 14952,
16 14964, 14981, 14982, 14985, 14991, 14994, 14996, 15000, 15003, 15006,
17 15007, 15014, 15020, 15022, 15023, 15036, 15054, 15055, 15062, 15078,
18 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232, 15234, 15283,
19 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330, 15335, 15336,
20 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380, 15381, 15394,
21 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423, 15424, 15426,
22 15429, 15431, 15432, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
23 15490, 15492, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583,
24 15618, 15627, 15631, 15654, 15655, 15666, 15667, 15674, 15711, 15755,
27 * CVE-2013-2207 Incorrectly granting access to another user's pseudo-terminal
28 has been fixed by disabling the use of pt_chown (Bugzilla #15755).
29 Distributions can re-enable building and using pt_chown via the new configure
30 option `--enable-pt_chown'. Enabling the use of pt_chown carries with it
31 considerable security risks and should only be used if the distribution
32 understands and accepts the risks.
34 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
37 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
38 fixed (Bugzilla #15330).
40 * Add support for calling C++11 thread_local object destructors on thread
41 and program exit. This needs compiler support for offloading C++11
42 destructor calls to glibc.
44 * Improved worst case performance of libm functions with double inputs and
47 * Support for priority inherited mutexes in pthread condition variables on
48 non-x86 architectures.
50 * Port to Xilinx MicroBlaze contributed by David Holsgrove.
52 * Optimized string functions for AArch64. Implemented by Marcus Shawcroft.
54 * Optimized string functions for ARM. Implemented by Will Newton and
57 * Optimized libm functions for SPARC. Implemented by David S. Miller.
59 * Support for building more of ARM glibc as Thumb-2 code. Implemented by
62 * Support for building most of MIPS glibc as MIPS16 code. Implemented by
63 Chung-Lin Tang, Maciej W. Rozycki and Maxim Kuvyrkov.
65 * Added a benchmark framework to track performance of functions in glibc.
67 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
68 It is based on draft TS 18661 and currently enabled as a GNU extension.
70 * On Linux, the clock function now uses the clock_gettime system call
71 for improved precision, rather than old times system call.
73 * Added new API functions pthread_getattr_default_np and
74 pthread_setattr_default_np to get and set the default pthread
75 attributes of a process.
77 * Added support for TSX lock elision for pthread mutexes on i386 and x86-64.
78 This may improve lock scaling of existing programs on TSX capable systems.
79 When the --enable-lock-elision=yes parameter is specified at configure
80 time lock elision will be enabled by default for all PTHREAD_MUTEX_DEFAULT
85 * The following bugs are resolved with this release:
87 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
88 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
89 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
90 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
91 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
92 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
93 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
94 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
95 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
96 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
97 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
98 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
99 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
100 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
101 14879, 14889, 14893, 14898, 14914.
103 * Optimization of memcpy for MIPS.
105 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
106 EMFILE has been fixed (Bugzilla #14889).
108 * The add-on ports collection is now distributed in the "ports" subdirectory
109 of the main GNU C Library distribution, rather than separately.
111 * Port to ARM AArch64 contributed by Linaro.
113 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
114 Optimized versions of memcpy, memset, and memcmp added for System z10 and
116 Implemented by Andreas Krebbel.
118 * The new function secure_getenv allows secure access to the environment,
119 returning NULL if running in a SUID/SGID process. This function replaces
120 the internal function __secure_getenv.
122 * SystemTap static probes have been added into the dynamic linker.
123 Implemented by Gary Benson.
125 * Optimizations of string functions strstr, strcasestr and memmem.
126 Implemented by Maxim Kuvyrkov.
128 * The minimum Linux kernel version that this version of the GNU C Library
129 can be used with is 2.6.16.
131 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
132 powerpc POWER7. Implemented by Will Schmidt.
134 * New configure option --disable-nscd builds the C library such that it
135 never attempts to contact the Name Service Caching Daemon (nscd).
136 New configure option --disable-build-nscd avoids building nscd itself;
137 this is the default if --disable-nscd is used.
139 * Improved support for cross-compilation, including cross-testing and
140 bootstrap builds without a previously built glibc.
142 * Several testsuite tests are now able to test multiple IFUNC variants of an
143 interface, rather than just testing the one that would be chooen by
146 * New configure options --with-bugurl and --with-pkgversion, for
147 distributors to use to embed their bug-reporting and package version
148 information in --help and --version output.
150 * The ttyname and ttyname_r functions on Linux now fall back to searching for
151 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
152 allows creation of chroots without the procfs mounted on /proc.
154 * The `crypt' function now fails if passed salt bytes that violate the
155 specification for those values. On Linux, the `crypt' function will
156 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
157 enabled, and fail on encrypted strings using the MD5 or DES algorithm
158 when the mode is enabled.
160 * The `clock_*' suite of functions (declared in <time.h>) is now available
161 directly in the main C library. Previously it was necessary to link with
162 -lrt to use these functions. This change has the effect that a
163 single-threaded program that uses a function such as `clock_gettime' (and
164 is not linked with -lrt) will no longer implicitly load the pthreads
165 library at runtime and so will not suffer the overheads associated with
166 multi-thread support in other code such as the C++ runtime library.
168 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
173 * The following bugs are resolved with this release:
175 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
176 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
177 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
178 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
179 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
180 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
181 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
182 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
183 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
184 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
185 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
186 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
187 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
188 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
189 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
190 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
191 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
192 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
193 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
194 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
195 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
196 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
199 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
200 configuring glibc with:
201 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
202 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
203 Implemented by H.J. Lu.
207 + define static_assert
209 + do not declare gets
211 + declare at_quick_exit and quick_exit also for ISO C11
213 + aligned_alloc. NB: The code is deliberately allows the size parameter
214 to not be a multiple of the alignment. This is a moronic requirement
215 in the standard but it is only a requirement on the caller, not the
220 + uchar.h support added
222 + CMPLX, CMPLXF, CMPLXL added
224 Implemented by Ulrich Drepper.
226 * Support for the IA-64 has been moved to ports.
228 * Remove support for anything but ELF binary format
230 * Checking versions of poll, ppoll added.
231 Implemented by Ulrich Drepper.
233 * More generic and 64-bit performance optimizations to math functions.
234 Implemented by Ulrich Drepper.
236 * New configure option --enable-obsolete-rpc makes the deprecated RPC
237 headers and functions available at compile time as they were before
238 version 2.14. This option will be removed at some time in the future
239 after the TI-RPC library becomes fully sufficient for the needs of
240 existing applications.
242 * Compatibility code for Linux kernel versions before 2.4 has been removed.
243 Note that glibc is not expected to work with any Linux kernel version
246 * New header <sys/auxv.h> and function getauxval allowing easy access to
247 the AT_* key-value pairs passed from the Linux kernel. The header also
248 defines the HWCAP_* bits associated with the AT_HWCAP key.
250 * New locales: mag_IN
252 * New configure option --enable-systemtap builds SystemTap static probes
253 into libc for setjmp and longjmp and into libpthread for various operations.
254 So far the setjmp/longjmp probes and some of the libpthread probes are
255 provided only for i*86 and x86_64.
256 Implemented by Roland McGrath and Rayson Ho.
258 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
260 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
263 * More optimized functions for SPARC. Implemented by David S. Miller.
265 * Improved support for cross-compilation, especially bootstrap builds
266 without a previously built glibc.
268 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
269 Chris Metcalf from Tilera.
271 * Support for the old ARM ABI has been removed from ports. Only the EABI is
272 now supported for ARM processors.
274 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
275 as the name of the dynamic linker, to distinguish it from the
276 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
278 * Support for CRIS has been removed from ports.
280 * A new class of installed header has been documented for low-level
281 platform-specific functionality. PowerPC added the first instance with a
282 function to provide time base register access. Contributed by Tulio
283 Magno Quites Machado Filho.
285 * ix86 configurations now install header files that are consistent with
286 what x86-64 configurations install. These same header files can be used
287 for -m32, -m64, or -mx32 builds.
288 Contributed by H.J. Lu.
290 * Math library bug fixes. A thorough audit of all open math library bugs was
291 conducted by Joseph Myers. Significant progress was made on many math
292 library bugs resulting in more accurate exceptions and function results.
293 Many thanks to all those that contributed including Andreas Jaeger for his
294 patch review and work on the x87 trigonometric instruction issues.
296 * Timezone data is no longer installed. Timezone-related binaries and scripts
297 will continue to be installed. Users should obtain their timezone data from
298 their distribution provider or from the tzdata package at
299 <ftp://munnari.oz.au/pub/>.
303 * The following bugs are resolved with this release:
305 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
306 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
307 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
308 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
309 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
310 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
311 13484, 13506, 13515, 13523, 13524, 13538, 13540
313 * New program pldd to list loaded object of a process
314 Implemented by Ulrich Drepper.
316 * Add nss_db support back to glibc. No more dependency on Berkeley db
317 and support for initgroups lookups.
318 Implemented by Ulrich Drepper.
320 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
321 Contributed by HJ Lu.
323 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
324 Contributed by HJ Lu.
326 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
327 on x86-32 and x86-64.
328 Contributed by Liubov Dmitrieva.
330 * Optimized strchr and strrchr for SSE on x86-32.
331 Contributed by Liubov Dmitrieva.
333 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
334 for x86-64 and x86-32.
335 Contributed by Liubov Dmitrieva.
337 * New interfaces: scandirat, scandirat64
338 Implemented by Ulrich Drepper.
340 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
341 Implemented by Ulrich Drepper.
343 * nscd now also caches the netgroup database.
344 Implemented by Ulrich Drepper.
346 * Integrate libm with gcc's -ffinite-math-only option.
347 Implemented by Ulrich Drepper.
349 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
350 to math functions. Implemented by Ulrich Drepper.
352 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
353 Implemented by Ulrich Drepper.
355 * New Linux interfaces: process_vm_readv, process_vm_writev
357 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
358 Implemented by Ulrich Drepper.
360 * Optimized nearbyint and strcasecmp for PPC.
361 Implemented by Adhemerval Zanella.
363 * New locales: bho_IN, unm_US, es_CU, ta_LK
367 * The following bugs are resolved with this release:
369 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
370 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
371 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
372 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
373 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
374 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
375 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
376 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
377 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
378 12795, 12811, 12813, 12814, 12841
380 * The RPC implementation in libc is obsoleted. Old programs keep working
381 but new programs cannot be linked with the routines in libc anymore.
382 Programs in need of RPC functionality must be linked against TI-RPC.
383 The TI-RPC implementation is IPv6 enabled and there are other benefits.
385 Visible changes of this change include (obviously) the inability to link
386 programs using RPC functions without referencing the TI-RPC library and the
387 removal of the RPC headers from the glibc headers.
388 Implemented by Ulrich Drepper.
390 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
391 syncfs, setns, sendmmsg
393 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
394 yue_HK, lij_IT, mhr_RU
396 * New encodings: CP770, CP771, CP772, CP773, CP774
398 * New program sotruss to trace calls through PLTs
399 Implemented by Ulrich Drepper.
401 * The malloc hook implementation is marked deprecated and will be removed
402 from the default implementation in the next version. The design never
403 worked ever since the introduction of threads. Even programs which do
404 not create threads themselves can use multiple threads created internally.
408 * The following bugs are resolved with this release:
410 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
411 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
412 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
413 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
416 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
418 * POWER7 optimizations: memset, memcmp, strncmp
420 * New optimized string functions for x86-64: strnlen (SSE2),
421 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
422 Implemented by Ulrich Drepper.
426 * The following bugs are resolved with this release:
428 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
429 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
430 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
431 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
432 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
433 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
434 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
435 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
437 * New interfaces: pthread_getname_np, pthread_setname_np
439 * New Linux interface: recvmmsg
441 * STT_GNU_IFUNC implemented for Sparc by David Miller.
443 * The dynamic linker now recognizes supported ABI versions from the
444 EI_ABIVERSION field in the ELF header.
445 Implemented by Ulrich Drepper.
447 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
448 will not be used to fill in password fields in the passwd.byname replies.
449 Instead it is used to synthesize the shadow.byname table, should it be
450 missing. This is a useful mode in some installations involving Solaris.
451 Implemented by Ulrich Drepper.
453 * New locales: kok_IN, sq_MK, cv_RU
457 * The following bugs are resolved with this release:
459 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
460 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
461 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
462 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
463 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
464 10789, 10817, 10823, 10840, 10847
466 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
468 Implemented by Ulrich Drepper.
470 * Checking version of longjmp added that fails if an uninitialized stack
471 frame would be created. Implemented by Ulrich Drepper.
473 * STT_GNU_IFUNC is now supported in static executables.
474 Implemented by H.J. Lu.
476 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
478 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
479 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
480 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
481 Contributed by H.J. Lu.
483 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
484 Implemented by Ulrich Drepper.
486 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
488 Contributed by H.J. Lu.
490 * Support for fma instruction in AVX on x86-64.
491 Implemented by H.J. Lu and Ulrich Drepper.
493 * AVX support in x86-64 auditing support in ld.so.
494 Implemented by H.J. Lu.
496 * STB_GNU_UNIQUE support added.
497 Implemented by Ulrich Drepper.
499 * Implement second fallback mode for optimized DNS lookup for even more
500 broken environments. If two requests from the same port are not
501 handled correctly close the socket and open a new one before sending
502 the second request. The 'single-request-reopen' option in /etc/resolv.conf
503 can be used to select this mode right away, instead of rediscovering the
504 necessity is every process again.
505 Implemented by Ulrich Drepper.
507 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
508 Implemented by Adam Tkac.
510 * Optimized iconv conversions for S390x.
511 Implemented by Andreas Krebbel.
513 * Using condvars with PI mutexes is now more efficient due to kernel
514 support for requeueing to PI futexes. NPTL support added for x86-64.
515 Implemented by Ulrich Drepper.
517 * New locales: ps_AF, my_MM
521 * The following bugs are resolved with this release:
523 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
524 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
525 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
526 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
527 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
529 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
530 Implemented by Ulrich Drepper.
532 * New Linux interfaces: accept4, fallocate, fallocate64.
533 Implemented by Ulrich Drepper.
535 * Correct declarations of string function when used in C++ code. This
536 could lead to compile errors for invalid C++ code.
538 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
541 * New POSIX 2008 interface: psiginfo
542 Implemented by Ulrich Drepper.
544 * New ISO C++1x interfaces: quick_exit, at_quick_exit
545 Implemented by Ulrich Drepper.
547 * Support for selecting between multiple function definitions at runtime
548 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
550 * The libcrypt library can now use the hash function implementations in
551 NSS. Implemented by Ulrich Drepper.
553 * The malloc implementation can be compiled to be less memory efficient
554 but higher performing in multi-threaded programs.
555 Implemented by Ulrich Drepper.
557 * New locales: nan_TW@latin, ks_IN
559 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
560 Implemented by Ulrich Drepper.
562 * Extended printf hook support. It is possible to use user-defined types
563 and extend existing format specifiers.
564 Implemented by Ulrich Drepper.
566 * Handling for group shadow files has been added.
567 Implemented by Ulrich Drepper.
569 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
570 servers (the case, e.g., for some people using the built-in DNS
571 server in ADSL modems/routers). There is a once-per-process timeout
572 in case of a broken server. To avoid it, users can run nscd or put
573 'options single-request' in /etc/resolv.conf.
574 Implemented by Ulrich Drepper.
578 * The following bugs are resolved with this release:
580 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
581 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
582 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
583 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
584 6968, 6974, 6980, 6995, 7008, 7009, 7029
586 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
587 up at the same time. Implemented by Ulrich Drepper.
589 * TLS descriptors for LD and GD on x86 and x86-64.
590 Implemented by Alexandre Oliva.
592 * getaddrinfo now handles DCCP and UDPlite.
593 Implemented by Ulrich Drepper.
595 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
596 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
597 Implemented by Ulrich Drepper.
599 * New implementation of memmem, strstr, and strcasestr which is O(n).
600 Implemented by Eric Blake.
602 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
604 * Implement "e" option for popen to open file descriptor with the
605 close-on-exec flag set. Implemented by Ulrich Drepper.
607 * Implement "b" mode for fmemopen. In this mode writes writes don't
608 implicitly add a NUL byte and seeks from the end of the buffer really
609 use the buffer end, not the string length as the basis.
610 Implemented by Ulrich Drepper.
612 * Many functions, exported and internal, now atomically set the close-on-exec
613 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
615 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
617 Implemented by Pravin Satpute.
619 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
623 * The following bugs are resolved with this release:
625 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
626 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
627 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
628 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
629 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
630 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
631 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
633 * New locales: bo_CN, bo_IN, shs_CA.
635 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
637 * Sorting rules for some Indian languages (Devanagari and Gujarati).
638 Implemented by Pravin Satpute.
640 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
642 * nscd caches now all timeouts for DNS entries
643 Implemented by Ulrich Drepper.
645 * nscd is more efficient and wakes up less often.
646 Implemented by Ulrich Drepper.
648 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
649 vdprintf, and obstack_vprintf.
650 Implemented by Jakub Jelinek.
652 * Faster memset for x86-64.
653 Implemented by Harsha Jagasia and H.J. Lu.
655 * Faster memcpy on x86.
656 Implemented by Ulrich Drepper.
658 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
659 Implemented by Ulrich Drepper.
661 * Faster sqrt and sqrtf implemention for some PPC variants.
662 Implemented by Steven Munroe.
666 * The following bugs are resolved with this release:
668 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
669 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
670 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
671 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
672 5071, 5103, 5104, 5112, 5113, 5184, 5186
674 * More checking functions: fread, fread_unlocked, open*, mq_open.
675 Implemented by Jakub Jelinek and Ulrich Drepper.
677 * Extend fortification to C++. Implemented by Jakub Jelinek.
679 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
680 by not recognizing 'a' as a modifier when those specs are requested.
681 Implemented by Jakub Jelinek.
683 * PPC optimizations to math and string functions.
684 Implemented by Steven Munroe.
686 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
687 options to be passed. Implemented by Ulrich Drepper.
689 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
691 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
692 Implemented by Ulrich Drepper.
694 * Handle private futexes in the NPTL implementation.
695 Implemented by Jakub Jelinek and Ulrich Drepper.
697 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
698 Implemented by Roland McGrath and Ulrich Drepper.
700 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
702 * SHA-256 and SHA-512 based password encryption.
703 Implemented by Ulrich Drepper.
705 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
706 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
709 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
710 Implemented by Ulrich Drepper.
714 * The following bugs are resolved with this release:
716 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
717 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
718 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
719 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
720 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
721 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
722 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
725 * New Linux interfaces: epoll_pwait, sched_getcpu.
727 * New generic interfaces: strerror_l.
729 * nscd can now cache the services database. Implemented by Ulrich Drepper.
733 * The following bugs are resolved with this release:
735 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
736 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
737 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
738 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
739 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
740 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
741 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
742 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
743 3225, 3251, 3252, 3253, 3273
745 * For Linux, the sorting of addresses returned by getaddrinfo now also
746 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
747 Implemented by Ulrich Drepper.
749 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
750 Implemented by Ulrich Drepper.
752 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
754 * New iconv module for MIK. Contributed by Alexander Shopov.
756 * For sites with broken group and/or passwd database, the auto-propagate
757 option of nscd can prevent creating ID lookup entries from the results
758 of a name lookup and vice versa. This usually is no problem but some
759 site might have problems with the default behavior.
760 Implemented by Ulrich Drepper.
762 * Iterating over entire database in NIS can be slow. With the
763 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
764 to trade time for memory. The entire database will be read at once.
765 Implemented by Ulrich Drepper.
767 * The interfaces introduced in RFC 3542 have been implemented by
770 * Support for the new ELF hash table format was added by Ulrich Drepper.
772 * Support for priority inheritance mutexes added by Jakub Jelinek and
775 * Support for priority protected mutexes added by Jakub Jelinek.
777 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
778 or_IN, csb_PL, fy_NL, sr_ME.
782 * More overflow detection functions.
784 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
785 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
787 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
788 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
789 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
790 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
791 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
792 by Masahide Washizawa.
794 * It is now possible to install audit libraries for the dynamic linker using
795 LD_AUDIT. Implemented by Ulrich Drepper.
797 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
798 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
799 For a libc and libpthread that works well on Linux 2.4 kernels, we
800 recommend using the stable 2.3 branch.
802 * The new function open_wmemstream acts like open_memstream,
803 but uses a wchar_t wide character buffer.
805 * The new function ppoll is an improved version of poll, similar to pselect.
807 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
808 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
809 renameat, unlinkat, linkat, symlinkat, readlinkat.
811 * New Linux kernel system calls: unshare,
812 inotify_init, inotify_add_watch, inotify_rm_watch.
814 * The euidaccess function is now also known by the alias eaccess,
815 for compatibility with some other systems.
817 * Timezone data updated to 2006b version.
821 * The following bugs are resolved with this release:
823 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
824 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
825 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
826 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
827 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
828 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
830 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
832 * As of this release, GCC 4 can be used to compile the C Library.
834 * Timezone data updated to 2005m version.
838 * The following bugs are resolved with this release:
840 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
841 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
842 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
843 777, 787, 821, 822, 823, 825
845 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
849 * Support for RFC 3678. Real implementations exist only for Linux so far.
850 Implemented by Ulrich Drepper.
852 * nscd can now cache entries persistently. Expiring entries are reloaded.
853 For speedups the cache can be shared in memory with client processes.
854 Implemented by Ulrich Drepper.
856 * nscd can now perform SELinux checks.
857 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
859 * getaddrinfo queries are now cached. Canonical name lookup is performed
861 Implemented by Ulrich Drepper.
863 * The nothrow function attribute is used when headers are used by gcc when
864 compiling C code. This can avoid significant amounts of exception
867 * The malloc functions perform more error checking and are stricter when
868 it comes to reacting on errors. The default action is to terminate
869 the process after showing an error message. Implemented by Ulrich Drepper.
871 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
872 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
874 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
875 namespaces using the new function dlmopen(). This feature is of course,
876 like most other dynamic loading functionality, not available in statically
877 linked applications. Implemented by Ulrich Drepper.
879 * Low-overhead boundary checking variants of string and some stdio functions
880 were added. These are to be used in conjunction with a gcc patch by
881 Jakub Jelinek which adds calls to these functions if possible.
882 Implemented by Jakub Jelinek and Ulrich Drepper.
884 * Old code for several operating systems and machine architectures that
885 have not been in working condition in a long time have been removed from
886 the main source tree maintained by the GNU C Library's maintainers.
887 These files are now reside in the separate `ports' source module
888 that is usable as an add-on when building the library.
892 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
893 interrogate the dynamic linker, compatible with the Solaris interface.
895 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
896 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
898 * getifaddrs now uses the netlink interface on Linux to get its information.
899 Implemented by Thorsten Kukuk.
901 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
902 Implemented by Ulrich Drepper.
904 * support for non-executable stacks on x86 has been added. Changes mostly
907 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
910 * getaddrinfo now performs destination address selection according to
915 * Thread-safe interfaces for many functions that access locale data
916 were added in version 2.3, but these features were omitted from NEWS.
917 Many functions have variants with an `_l' suffix that take a `locale_t'
918 object as a parameter rather than consulting the current locale.
919 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
920 create and maintain `locale_t' objects. Additionally, the new function
921 `uselocale' sets "the current locale" (as used by functions not so
922 parameterized) set for an individual thread. These features were added
923 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
925 * The functions getresuid, getresgid, setresuid, and setresgid, which
926 have long been available on Linux, are now declared in <unistd.h>
927 and are now also available on the Hurd.
929 * ELF thread-local storage support (TLS) now works on x86-64.
931 * The new dynamic string token $LIB is expanded in shared library names.
932 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
934 * Aldy Hernandez contributed complete software floating point support for
935 PowerPC machines with no FPU.
937 * fexecve is implemented on Linux.
939 * The `btowc' function should work at least twice as fast due to
940 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
942 * With approriate thread add-ons cancelable functions are now implemented
943 in libc.so as well. No need to call the function in libpthread. This
944 change allowed to finally disable the incorrect and expensive handling
945 of weak definition in ld.so.
947 * Yet more PLT entries in libc.so have been removed. We finally arrived
948 at the bare minimum. Startup times improved appropriately.
950 * Support for the new Linux/x86 system call interface was added. The
951 AT_SYSINFO auxiliary vector entry is recognized and handled.
955 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
958 * iconv (the program and the interface) now accepts empty names (excluding
959 options like //TRANSLIT) to mean "use charset of current locale".
961 * localedef can now transliterate characters in strings which are not in
962 the provided charmap. The information from the input locale is used.
964 * Prelinking support was added for ELF targets. This requires additional
965 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
967 * Read-only stdio streams now use mmap to speed up operation by eliminating
968 copying and buffer underflows. To use add 'm' to the mode string of
969 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
971 * The malloc functions were completely rewritten by Wolfram Gloger based
972 on Doug Lea's malloc-2.7.0.c.
974 * Isamu Hasegawa contributed a completely new and POSIX-conformant
975 implementation of regex.
977 * Bruno Haible upgraded the iconv and locale implementation to support
980 * Contents of the LC_* and LANG environment variables in the CEN style are
981 not recognized anymore. It never was used. Change by Ulrich Drepper.
983 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
984 thread-local storage (TLS) ABI on some platforms.
985 Changes by Ulrich Drepper. SH support by Kaz Kojima.
987 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
988 EUC-JISX0213, and TSCII.
990 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
991 BSD-compatible interface for getting all network interface addresses.
992 Implementation for IPv4 by Roland McGrath.
994 * Loading of locale data is faster due to the introduction of a locale
995 archive. Implemented by Roland McGrath and Ulrich Drepper.
997 * Startup times are significantly reduced by not using exported functions
998 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
1001 * Steven Munroe contributed a port to PowerPC64/Linux.
1005 * The Hurd now uses the GNU libio implementation of stdio rather than the
1006 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
1008 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
1009 with the same behavior as the Linux system call of the same name.
1013 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
1014 128-bit long double format.
1016 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
1017 IBM1161, and IBM1162 charsets.
1019 * Andreas Jaeger contributed a port to x86-64/Linux.
1021 * Peter Bruin contributed a port to PowerPC/Hurd.
1023 * libc functions using I/O streams now can handle wide-oriented streams
1026 * optimizations in the dynamic linker. Binaries created by recent binutils
1027 versions start up quicker due to reduced time spent on relocations.
1029 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
1033 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
1034 asinh, atanh, j0 for the 128-bit long double format.
1036 * Bruno Haible updated all the code handling Unicode in some form to
1037 support Unicode 3.1.
1039 * Speed of regex for single-byte locales is back to previous levels.
1040 Patch by Isamu Hasegawa.
1042 * Alpha, SPARC, and IA-64 now also using floating stacks.
1044 * Startup time of internationalized applications greatly improved through
1045 iconv cache. Use iconvconfig to generate the cache file.
1046 Contributed by Ulrich Drepper.
1048 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1049 severe performance problems. Patch by David Mosberger.
1051 * The Hurd port got a lot more functionality like AIO, various stdio
1052 extensions, etc. Mainly done by Roland McGrath.
1054 * mtrace can now lookup symbols in shared libraries.
1058 * Intel's IA-64 math library is largely integrated. It provides fast and
1059 accurate implementatations for most basic and standard math functions
1060 in float, double, and long double format.
1062 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1063 and asin for the 96-bit long double format and asin, log, tan for the
1064 128-bit long double format.
1066 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1067 The basic double functions exist today. Contributed by Abraham Ziv
1068 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1069 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1071 * An asynchronous name lookup library was added. The interface is designed
1072 after POSIX AIO. The proposal was circulated beforehand to get comments.
1073 No negative ones came in. Implemented by Ulrich Drepper.
1075 * Port to S390/64bit contributed by Martin Schwidefsky
1076 <schwidefsky@de.ibm.com>.
1078 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1079 of functions for Linux/IA-64.
1081 * The RPC code is now thread safe. Threads can now use the same service
1082 of different services at the same time. Patch by Eric Norum
1083 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1085 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1086 family of functions for Linux/S390.
1088 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1089 of functions for Linux/x86.
1091 * Port to Linux/CRIS contributed by Axis Communications.
1095 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1096 we can now check for namespace violations and missing declarations. The
1097 result is that almost all headers are now Unix-compliant (as defined in
1098 the upcoming XPG6). The negative side is that some programs might need
1099 corrections, too, if they depend on the incorrect form of the headers in
1100 previous versions which defined too many symbols and included too many
1103 * regex now handles multibyte character sets correctly.
1104 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1106 * iconv (the program) does now conform to the upcoming XPG6 and handles
1107 charmaps. Instead of the charset names the path of charmaps can be
1108 provided and the conversion happens based on this data.
1109 Contributed by Ulrich Drepper.
1111 * The locale program now provides detailed information about the installed
1116 only lists the names of the supported locales
1120 provides details such as country, language, and codeset name.
1121 Contributed by Ulrich Drepper.
1125 * The gencat program now parses the input file according to the charset
1126 selected by the LC_CTYPE category. This is important for stateful
1127 character sets. To make generating catalogs easier there is a way
1128 to overwrite the charset selected by the locale: before the first
1129 message or $ quote line the catalog can contain a line like
1131 $ codeset=ISO-8859-2
1133 to select the charset (ISO-8859-2 in this case).
1135 Implemented by Shinya Hanataka and Ulrich Drepper.
1137 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1138 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1139 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1141 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1142 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1144 * The LANGUAGE environment variable is now ignored unless the locale is
1145 changed from the default "C" locale.
1147 * The usual bug fixes.
1151 * Greg McGary added runtime support for bounds checking using gcc's
1152 new -fbounded-pointers option. ix86 target is complete. PowerPC
1155 * Thorsten Kukuk added secure mode support to nscd.
1157 * The Berkeley db libraries have been removed.
1159 Related, the nss_db module is now in a separate package since it
1160 obviously requires a database library being available.
1162 * Wide character I/O streams implemented by Ulrich Drepper.
1164 * Functions from the extended socket API added by Ulrich Drepper.
1166 * Functions feenableexcept and fedisableexcept to control the
1167 behaviour of individual exceptions have been added by Andreas Jaeger.
1169 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1171 * The resolver code has been updated from bind 8.2.3-T5B which supports
1172 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1175 This change could in some situations effect backward compatibility. Since
1176 now `_res' is a thread-local instead of a global variable, modifying it
1177 in one thread does not have any effect in other threads.
1179 The resolver library was also extended to allow IPv6 as the transport
1180 protocol for the requests. This work was done by Stig Venaas.
1182 * Compatibility code for K&R C compilers has been removed from the
1183 header files. A ISO C compiler is needed to use the library
1184 (conforming to either C89 or C99 standard).
1186 * Complete rewrite of the localedef program to support multibyte character
1187 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1188 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1189 Implemented by Ulrich Drepper.
1191 Bruno Haible significantly improved the generation and use of the data
1192 structures for the wide character tables.
1194 * Plural handling in gettext implemented by Ulrich Drepper.
1196 * The utmp daemon has been removed.
1198 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1200 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1203 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1205 * POSIX barriers implemented by Kaz Kylheku.
1207 * POSIX spawn function family implemented by Ulrich Drepper.
1209 * POSIX spinlocks are now available.
1211 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1213 * the configure option --enable-kernel=X.Y.Z allows to strip out
1214 compatibility for kernel versions before X.Y.Z. This is currently only
1215 implemented for Linux.
1217 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1218 field sin6_scope_id. This means that all programs using IPv6 should be
1219 recompiled. Don't expect binary compatibility with previous glibc
1222 * various conversion modules for IBM character sets contributed by
1225 * IA-64 port by Jes Sorensen and HJ Lu.
1239 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1241 * New xdr functions are added; some rpc functions are now 64bit clean.
1243 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1245 * Fixed known incompatibilities with glibc 2.0.
1247 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1249 * Optimized a number of functions (especially the ELF dynamic loader).
1251 * Update timezone data files.
1253 * lots of charmaps corrections
1255 * some new locale definitions and charmaps
1260 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1261 conform to POSIX member type requirements. Symbol versions have been
1262 adjusted as needed within the library, and for direct use by applications,
1263 but there is potential for problems if third-party libraries use
1264 struct timeval as part of their interface. This does not present
1265 a problem for X and other "essential" system libraries.
1267 * An additional locale model to support C++ Standard Library locale
1268 model and probably more was implemented by Ulrich Drepper.
1270 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1273 * Miles Bader provided the `argp' function family to support hierachical
1274 command line argument parsing, layered on top of getopt.
1276 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1278 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1281 * scanf recognizes the %a and %A format for scanning floating point numbers.
1283 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1284 information and interfaces for the available integer types.
1286 * about 130 new math functions were added to implement the ISO C9x math
1289 * the new header <complex.h> contains definitions of the complex math
1290 functions from ISO C 9X.
1292 * the new header <tgmath.h> defines generic macros to use complex or
1293 real valued functions.
1295 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1297 * Andreas Jaeger provided a test suite for the math library.
1299 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1301 * Ulrich Drepper added character set conversion functions (iconv).
1303 * Optimized string functions have been added.
1305 * The localedata addon is now part of glibc.
1307 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1309 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1310 daemon for NSS (nscd).
1312 Missing a better place here are some numbers on improvements. Under
1313 Linux 2.1.125 un-tar-ing the kernel sources takes
1317 using local files 12.19s 6.88s 22.91s
1319 using NIS 13.92s 8.91s 26.34s
1321 using NIS & nscd 10.37s 7.34s 25.30s
1323 using NIS+ 27.57s 30.37s 640.46s
1325 using NIS+ & nscd 10.25s 7.83s 26.51s
1327 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1329 Keep in mind that non-namelookup related operations dominate above times.
1330 It was just a common complain that using NIS+ unpacking the kernel is
1333 [1] The old nscd implementation is not available anymore since it was
1334 distributed with glibc up to version 2.0.98 and thus is now replaced.
1336 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1338 * Mark Kettenis provided a Hesiod NSS module.
1340 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1341 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1343 * rcmd can now handle netgroups (Dick Streefland).
1345 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1348 * Support for the IPv6 protocol has been added to the socket API, as per the
1349 latest draft standards.
1351 * Support for Linux 2.2 has been added.
1353 * Interface changes relative to the latest 2.0.x release:
1354 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1355 addseverity NEW: Unix98
1356 alphasort64 NEW: LFS
1357 argp_err_exit_status NEW: argp, GNU ext
1358 argp_error NEW: argp, GNU ext
1359 argp_failure NEW: argp, GNU ext
1360 argp_help NEW: argp, GNU ext
1361 argp_parse NEW: argp, GNU ext
1362 argp_program_bug_address NEW: argp, GNU ext
1363 argp_program_version NEW: argp, GNU ext
1364 argp_program_version_hook NEW: argp, GNU ext
1365 argp_state_help NEW: argp, GNU ext
1366 argp_usage NEW: argp, GNU ext
1367 authdes_create NEW: Secure RPC
1368 authdes_getucred NEW: Secure RPC
1369 authdes_pk_create NEW: Secure RPC
1370 backtrace NEW: GNU ext.
1371 backtrace_symbols NEW: GNU ext.
1372 backtrace_symbols_fd NEW: GNU ext.
1374 cacosf NEW: ISO C 9x
1375 cacosh NEW: ISO C 9x
1376 cacoshf NEW: ISO C 9x
1377 cacoshl NEW: ISO C 9x
1378 cacosl NEW: ISO C 9x
1385 casinf NEW: ISO C 9x
1386 casinh NEW: ISO C 9x
1387 casinhf NEW: ISO C 9x
1388 casinhl NEW: ISO C 9x
1389 casinl NEW: ISO C 9x
1391 catanf NEW: ISO C 9x
1392 catanh NEW: ISO C 9x
1393 catanhf NEW: ISO C 9x
1394 catanhl NEW: ISO C 9x
1395 catanl NEW: ISO C 9x
1396 cbc_crypt NEW: Secure RPC
1400 ccoshf NEW: ISO C 9x
1401 ccoshl NEW: ISO C 9x
1407 cimagf NEW: ISO C 9x
1408 cimagl NEW: ISO C 9x
1409 clearerr_locked REMOVED
1410 clntunix_create NEW: sunrpc ext
1412 clog10 NEW: ISO C 9x
1413 clog10f NEW: ISO C 9x
1414 clog10l NEW: ISO C 9x
1424 cprojf NEW: ISO C 9x
1425 cprojl NEW: ISO C 9x
1427 crealf NEW: ISO C 9x
1428 creall NEW: ISO C 9x
1433 csinhf NEW: ISO C 9x
1434 csinhl NEW: ISO C 9x
1437 csqrtf NEW: ISO C 9x
1438 csqrtl NEW: ISO C 9x
1442 ctanhf NEW: ISO C 9x
1443 ctanhl NEW: ISO C 9x
1445 des_setparity NEW: Secure RPC
1446 ecb_crypt NEW: Secure RPC
1447 endutxent NEW: Unix98
1449 exp10f NEW: ISO C 9x
1450 exp10l NEW: ISO C 9x
1454 fattach NEW: STREAMS
1455 fdetach NEW: STREAMS
1459 feclearexcept NEW: ISO C 9x
1460 fegetenv NEW: ISO C 9x
1461 fegetexceptflag NEW: ISO C 9x
1462 fegetround NEW: ISO C 9x
1463 feholdexcept NEW: ISO C 9x
1465 feraiseexcept NEW: ISO C 9x
1466 ferror_locked REMOVED
1467 fesetenv NEW: ISO C 9x
1468 fesetexceptflag NEW: ISO C 9x
1469 fesetround NEW: ISO C 9x
1470 fetestexcept NEW: ISO C 9x
1471 feupdateenv NEW: ISO C 9x
1472 fflush_locked REMOVED
1476 fgets_unlocked NEW: GNU ext.
1477 fileno_locked REMOVED
1489 fputc_locked REMOVED
1490 fputs_unlocked NEW: GNU ext.
1491 fread_unlocked NEW: GNU ext.
1496 fstatvfs NEW: Unix98
1500 ftruncate64 NEW: LFS
1502 fwrite_unlocked NEW: GNU ext.
1503 gai_strerror NEW: IPv6
1507 getchar_locked REMOVED
1509 getdate_err NEW: Unix98
1510 getdate_r NEW: GNU ext.
1512 getnameinfo NEW: IPv6
1513 getnetname NEW: Secure RPC
1514 getpmsg NEW: STREAMS
1515 getpt NEW: Unix98 PTY
1516 getrlimit64 NEW: LFS
1517 getutxent NEW: Unix98
1518 getutxid NEW: Unix98
1519 getutxline NEW: Unix98
1520 glob64 NEW: GNU ext.
1521 globfree64 NEW: GNU ext.
1522 gnu_get_libc_release NEW: GNU ext.
1523 gnu_get_libc_version NEW: GNU ext.
1524 grantpt NEW: Unix98 PTY
1525 host2netname NEW: Secure RPC
1527 iconv_close NEW: iconv
1528 iconv_open NEW: iconv
1529 if_freenameindex NEW: IPv6
1530 if_indextoname NEW: IPv6
1531 if_nameindex NEW: IPv6
1532 if_nametoindex NEW: IPv6
1533 in6addr_any NEW: IPv6
1534 in6addr_loopback NEW: IPv6
1535 inet6_isipv4mapped NEW: IPv6
1536 isastream NEW: STREAMS
1537 iswblank NEW: GNU ext.
1538 key_decryptsession NEW: Secure RPC
1539 key_decryptsession_pk NEW: Secure RPC
1540 key_encryptsession NEW: Secure RPC
1541 key_encryptsession_pk NEW: Secure RPC
1542 key_gendes NEW: Secure RPC
1543 key_get_conv NEW: Secure RPC
1544 key_secretkey_is_set NEW: Secure RPC
1545 key_setnet NEW: Secure RPC
1546 key_setsecret NEW: Secure RPC
1547 llrint NEW: ISO C 9x
1548 llrintf NEW: ISO C 9x
1549 llrintl NEW: ISO C 9x
1550 llround NEW: ISO C 9x
1551 llroundf NEW: ISO C 9x
1552 llroundl NEW: ISO C 9x
1557 lrintf NEW: ISO C 9x
1558 lrintl NEW: ISO C 9x
1559 lround NEW: ISO C 9x
1560 lroundf NEW: ISO C 9x
1561 lroundl NEW: ISO C 9x
1563 makecontext NEW: Unix98
1564 mempcpy NEW: GNU ext.
1567 modify_ldt NEW: kernel
1571 nearbyint NEW: ISO C 9x
1572 nearbyintf NEW: ISO C 9x
1573 nearbyintl NEW: ISO C 9x
1574 netname2host NEW: Secure RPC
1575 netname2user NEW: Secure RPC
1576 nexttoward NEW: ISO C 9x
1577 nexttowardf NEW: ISO C 9x
1578 nexttowardl NEW: ISO C 9x
1582 passwd2des NEW: Secure RPC
1584 pow10f NEW: GNU ext.
1585 pow10l NEW: GNU ext.
1588 printf_size NEW: GNU ext.
1589 printf_size_info NEW: GNU ext.
1590 profil_counter REMOVED
1591 pthread_mutexattr_getkind_np REPLACED
1592 pthread_mutexattr_setkind_np REPLACED
1593 ptsname NEW: Unix98 PTY
1594 ptsname_r NEW: Unix98 PTY
1596 putchar_locked REMOVED
1597 putgrent NEW: GNU ext.
1599 putpmsg NEW: STREAMS
1600 pututxline NEW: Unix98
1604 readdir64_r NEW: LFS
1605 remquo NEW: ISO C 9x
1606 remquof NEW: ISO C 9x
1607 remquol NEW: ISO C 9x
1609 roundf NEW: ISO C 9x
1610 roundl NEW: ISO C 9x
1612 scalbln NEW: ISO C 9x
1613 scalblnf NEW: ISO C 9x
1614 scalblnl NEW: ISO C 9x
1616 sendfile NEW: kernel
1617 setcontext NEW: Unix98
1618 setrlimit64 NEW: LFS
1619 setutxent NEW: Unix98
1621 sigignore NEW: Unix98
1622 sigqueue NEW: POSIX.1b
1623 sigrelse NEW: Unix98
1624 sigset NEW: POSIX.1b
1625 sigtimedwait NEW: POSIX.1b
1626 sigwaitinfo NEW: POSIX.1b
1627 sincos NEW: GNU ext.
1628 sincosf NEW: GNU ext.
1629 sincosl NEW: GNU ext.
1633 strcasestr NEW: GNU ext.
1634 strtoimax NEW: ISO C 9x
1635 strtoumax NEW: ISO C 9x
1636 strverscmp NEW: GNU ext.
1637 svcauthdes_stats NEW: Secure RPC
1638 svcunix_create NEW: sunrpc etx
1639 svcunixfd_create NEW: sunrpc ext
1640 swapcontext NEW: Unix98
1641 tcgetsid NEW: Unix98 PTY
1642 tdestroy NEW: GNU ext.
1643 tgamma NEW: ISO C 9x
1644 tgammaf NEW: ISO C 9x
1645 tgammal NEW: ISO C 9x
1649 truncf NEW: ISO C 9x
1650 truncl NEW: ISO C 9x
1652 unlockpt NEW: Unix98 PTY
1653 updwtmpx NEW: Unix98
1654 user2netname NEW: Secure RPC
1655 utmpxname NEW: Unix98
1656 versionsort NEW: GNU ext.
1657 versionsort64 NEW: GNU ext.
1659 wcscasecmp NEW: GNU ext.
1660 wcsncasecmp NEW: GNU ext.
1661 wcsnlen NEW: GNU ext.
1662 wcstoimax NEW: ISO C 9x
1663 wcstoll NEW: ISO C 9x
1664 wcstoull NEW: ISO C 9x
1665 wcstoumax NEW: ISO C 9x
1667 wordexp NEW: POSIX.2
1668 wordfree NEW: POSIX.2
1669 write_profiling REMOVED
1670 xdecrypt NEW: Secure RPC
1671 xdr_authdes_cred NEW: Secure RPC
1672 xdr_authdes_verf NEW: Secure RPC
1673 xdr_cryptkeyarg NEW: Secure RPC
1674 xdr_cryptkeyarg2 NEW: Secure RPC
1675 xdr_cryptkeyres NEW: Secure RPC
1676 xdr_getcredres NEW: Secure RPC
1677 xdr_key_netstarg NEW: Secure RPC
1678 xdr_key_netstres NEW: Secure RPC
1679 xdr_keybuf NEW: Secure RPC
1680 xdr_keystatus NEW: Secure RPC
1681 xdr_netnamestr NEW: Secure RPC
1682 xdr_sizeof NEW: Secure RPC
1683 xdr_unixcred NEW: sunrpc ext
1684 xencrypt NEW: Secure RPC
1685 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1696 * inet_ntoa is thread-safe
1698 * updwtmp is moved from libutil to libc
1700 * rewrite of cbrt function
1702 * update of timezone data
1716 * add atoll function
1718 * fix complex problems in Berkeley DB code
1720 * fix math functions
1724 * fixed lots of header problems (especially Linux/GNU specific)
1726 * dynamic loader preserves all registers
1728 * Roland McGrath provided support for handling of auxiliary objects in
1729 the ELF dynamic loader.
1731 * support for parallel builds is improved
1735 * GNU extensions are no longer declared by default. To enable them you
1736 must define the macro `_GNU_SOURCE' in your program or compile with
1739 * The library has changed from using GNU ld symbol aliases to using weak
1740 symbols where available. The ELF object file format supports weak
1741 symbols; GNU ld also supports weak symbols in the a.out format. (There
1742 is also now support for other GNU ld extensions in ELF. Use the
1743 `--with-elf' option to configure to indicate you have ELF, and
1744 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1745 of many files which contained only symbol aliases, reducing the size of
1746 the source and the compiled library; many other files were renamed to
1747 less cryptic names previously occupied by the symbol alias files.
1748 There is a new header file <elf.h> for programs which operate on
1749 files in the ELF format.
1751 * Converted to Autoconf version 2, so `configure' has more options.
1752 Run `configure --help' to see the details.
1754 * The library can now be configured to build profiling, highly-optimized
1755 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1756 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1757 `configure' enable building these extra libraries. The shared library is
1758 built by default when using both ELF and GNU ld. When shared libraries
1759 are enabled, the new library `-ldl' is available for arbitrary run-time
1760 loading of shared objects; its interface is defined in <dlfcn.h>. The
1761 new header file <link.h> gives access to the internals of the run-time
1762 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1763 application of same name on other systems and it provides information
1764 about dynamically linked binaries.
1766 * The C library now provides the run-time support code for profiling
1767 executables compiled with `-pg'. Programs can control the profiling code
1768 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1769 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1770 the support for this file format was contributed by David Mosberger-Tang.
1772 * The math code has been replaced with a math library based on fdlibm from
1773 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1774 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1775 functions. The math functions now reside in a separate library, so
1776 programs using them will need to use `-lm' their linking commands.
1778 * John C. Bowman contributed optimized ix87 assembler inline functions.
1780 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1781 mechanism similar to that found in Solaris 2. This is now used for the
1782 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1783 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1784 file controls what services are used for each individual database. This
1785 works by loading shared libraries with names specified in `nsswitch.conf',
1786 so service modules can be changed or added at any time without even
1787 relinking any program. Currently there are the file, db, and NIS based
1788 NSS services available.
1790 * The new functions `strtoq' and `strtouq' parse integer values from
1791 strings, like `strtol' and `strtoul', but they return `long long int' and
1792 `unsigned long long int' values, respectively (64-bit quantities).
1794 * The new functions `strtof' and `strtold' parse floating-point values from
1795 strings, like `strtod', but they return `float' and `long double' values,
1796 respectively (on some machines `double' and `long double' are the same).
1798 * Ulrich Drepper has contributed new implementations of the floating-point
1799 printing and reading code used in the `printf' family of functions and
1800 `strtod', `strtof', and `strtold'. These new functions are perfectly
1801 accurate, and much faster than the old ones.
1803 * The implementation of the POSIX locale model was completely rewritten by
1804 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1805 to compile the POSIX locale definition.
1807 * The former dummy implementations of the strcoll and strxfrm function are
1808 now replaced by fully functional code contributed by Ulrich Drepper. The
1809 collation information comes from the POSIX locale definitions.
1811 * The new header <langinfo.h> defines an interface for accessing
1812 various locale-dependent data (using the locale chosen with `setlocale').
1814 * Ulrich Drepper has contributed a new suite of functions for operation on
1815 wide-character and multibyte-character strings, in <wchar.h>;
1816 and classification and case conversion of wide characters, in <wctype.h>.
1817 These new functions are conforming to the ISO C, Amendement 1 specification.
1819 * There is now a second implementation of the standard I/O library available.
1820 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1821 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1823 * You can now use positional parameter specifications in format strings
1824 for the `printf' and `scanf' families of functions. For example,
1825 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1826 ``Number 6, Mr Jones''. This is mainly useful when providing different
1827 format strings for different languages, whose grammars may dictate
1828 different orderings of the values being printed. To support this
1829 feature, the interface for `register_printf_handler' has changed; see
1830 the header file <printf.h> for details.
1832 * The `printf' and `scanf' families of functions now understand a new
1833 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1834 to group numbers as indicated by the locale; for `scanf' and friends, this
1835 says to accept as valid only a number with all the proper grouping
1836 separators in the right places. In the default "C" locale, numbers are
1837 not grouped; but locales for specific countries will define the usual
1838 conventions (i.e. separate thousands with `,' in the US locale).
1840 * The pgrp functions have been regularized, slightly incompatibly but much
1841 less confusingly. The core functions are now `getpgid' and `setpgid',
1842 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1843 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1844 provided for compatibility. There is no longer an incompatible `getpgrp'
1845 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1847 * The new header file <fts.h> and suite of functions simplify programs that
1848 operate on directory trees. This code comes from 4.4 BSD.
1850 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1851 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1852 NSS scheme used in glibc.
1854 * There is a new malloc debugging hook `__memalign_hook'.
1856 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1857 `unsigned int' in <sys/types.h>. These are for compatibility only and
1858 their use is discouraged.
1860 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1861 done differently, so that it works even without GNU ld.
1863 * New function `euidaccess' checks allowed access to a file like `access',
1864 but using the effective IDs instead of the real IDs.
1866 * The time zone data files have been updated for the latest and greatest
1867 local time conventions of the countries of the world.
1869 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1872 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1873 for formatting floating-point numbers. They are provided only for
1874 compatibility; new programs should use `sprintf' instead. There are
1875 also equivalent function for the `long double' floating-point type and
1876 all functions also exist in a reentrant form.
1878 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1879 functions for maintaining the login-record files (primarily of use to
1880 system programs such as `login'), and convenient functions for
1881 allocating and initializing a pseudo-terminal (pty) device.
1883 * Ulrich Drepper has contributed new support for System V style
1884 shared memory and IPC on systems that support it.
1886 * Ulrich Drepper has contributed several miscellaneous new functions found
1887 in System V: The `hsearch' family of functions provide an effective
1888 implementation of hash tables; `a64l' and `l64a' provide a very simple
1889 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1892 * Ulrich Drepper has contributed new reentrant counterparts for the
1893 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1895 * Ulrich Drepper has contributed new, highly-optimized versions of several
1896 string functions for the i486/Pentium family of processors.
1898 * Ulrich Drepper has updated the Linux-specific code, based largely
1899 on work done in Hongjiu Lu's version of GNU libc for Linux.
1900 The GNU library now supports Linux versions 2.0.10 and later,
1901 using the ELF object file format (i[3456]86-*-linux).
1903 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1905 * David Mosberger-Tang and Richard Henderson have ported the C library
1906 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1907 dynamic linking support for ELF/Alpha.
1909 * Richard Henderson contributed several Alpha optimized assembler function
1910 for arithmetic and string handling.
1912 * Ulrich Drepper has contributed a new set of message catalog functions to
1913 support multiple languages using the <libintl.h> interface, for use with
1914 his new package GNU gettext. Translation volunteers have contributed
1915 catalogs of the library's messages in Spanish, German, and Korean.
1917 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1918 program and the `catgets' function for reading the catalog files it
1919 creates. (The <libintl.h> interface is preferred; we include the
1920 <nl_types.h> interface using `catgets' only for source compatibility with
1921 programs already written to use it.)
1923 * New header file <values.h> gives SVID-compatible names for <limits.h>
1926 * Various new macros, declarations, and small header files for compatibility
1929 * New function `group_member' is a convenient way to check if a process has
1930 a given effective group ID.
1932 * When using GCC 2.7 and later, the socket functions are now declared in a
1933 special way so that passing an argument of type `struct sockaddr_in *',
1934 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1935 `struct sockaddr *' type, does not generate a type-clash warning.
1937 * New function `error' declared in header file <error.h> is a convenient
1938 function for printing error messages and optionally exiting; this is the
1939 canonical function used in GNU programs. The new functions `err', `warn',
1940 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1941 doing the same thing.
1943 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1944 POSIX.2 `glob' function to do ~ and {...} expansion.
1946 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1947 `clearenv' which is used in POSIX.9 is also available.
1949 * New function `getsid' returns session ID number on systems that support it.
1951 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1952 files <db.h> and <mpool.h> provide a rich set of functions for several
1953 types of simple databases stored in memory and in files, and <ndbm.h> is
1954 an old `ndbm'-compatible interface using the `db' functions. Link with
1955 `-ldb' to get these functions.
1957 * New macro `strdupa' copies a string like `strdup', but uses local stack
1958 space from `alloca' instead of dynamic heap space from `malloc'.
1960 * New function `strnlen' is like `strlen' but searches only a given maximum
1961 number of characters for the null terminator. `stpncpy', `strndup' and
1962 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1965 * New function `statfs' in header <sys/statfs.h>.
1967 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1968 provide convenient functions for operating on blocks of null-terminated
1971 * A new suite of functions in <utmp.h> handle all the details of reading
1972 and writing the utmp file.
1974 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1977 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1978 completely POSIX compliant and also implemented the extended functionality
1979 to handle alternate digit representation and alternate era date formats.
1981 * Ulrich Drepper provided an implementation of the `strptime' function
1982 defined in XPG4.2 which transforms a string into a `struct tm' value.
1984 * Paul Eggert provided the tzselect shell script as part of the timezone
1985 code. The shell script makes it easy to select the correct timezone
1988 * The implementation of the malloc family of functions is completely replaced
1989 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1990 The implementation uses the mmap function (if available) and it is
1991 optimized for the use in multi threaded programs.
1993 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1994 functions. This new functionality is usable by specifying a special
1995 salt string and it is compatible with implementation on *BSD systems.
1997 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1998 `getsubopt' to handle second level command line options, `bsd_signal'
1999 to access BSD style `signal' functionality, the obsolete `regexp' style
2002 * the `lchown' function is available on system which support this
2005 * The implementation of the shadow password handling function was contributed
2008 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
2010 * POSIX.1g support was added. The <sys/select.h> header is available,
2011 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
2012 implementation of `getaddrinfo'.
2016 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
2018 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
2019 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
2021 * The new function `daemon' from 4.4 BSD is useful for server programs that
2022 want to put themselves in the background.
2024 * Joel Sherrill has contributed support for several standalone boards that
2025 run without an operating system.
2027 * `printf', `scanf' and friends now accept a `q' type modifier for long
2028 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
2030 * All of the code taken from BSD (notably most of the math and networking
2031 routines) has been updated from the BSD 4.4-Lite release.
2033 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2035 * The new functions `getdomainname' and `setdomainname' fetch or change the
2036 YP/NIS domain name. These are system calls which exist on systems which
2039 * The time zone data files have been updated for the latest international
2042 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2043 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2047 * The C library now includes support for Sun RPC, from Sun's free
2048 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2049 are included. (There is still no support for YP.)
2051 * Tom Quinn has contributed a port of the C library to SGI machines running
2052 Irix 4 (mips-sgi-irix4).
2054 * The new `lockf' function is a simplified interface to the locking
2055 facilities of `fcntl', included for compatibility.
2057 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2059 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2061 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2064 * The error message printed by `assert' for a failed assertion now includes
2065 the name of the program (if using GNU ld) and the name of the calling
2066 function (with versions of GCC that support this).
2068 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2070 * The library now includes the <sys/mman.h> header file and memory
2071 management functions `mmap', `munmap', `mprotect', `msync', and
2072 `madvise', on systems that support those facilities.
2074 * The interface for `mcheck' has changed slightly: the function called to
2075 abort the program when an allocation inconsistency is detected now takes
2076 an argument that indicates the type of failure. The new function
2077 `mprobe' lets you request a consistency check for a particular block at
2078 any time (checks are normally done only when you call `free' or `realloc'
2081 * It is now possible to easily cross-compile the C library, building on one
2082 system a library to run on another machine and/or operating system. All
2083 you need to do is set the variable `HOST_CC' in `configparms' to the
2084 native compiler for programs to run on the machine you are building on (a
2085 few generator programs are used on Unix systems); set `CC' to the
2088 * The new function `fexecve' (only implemented on the GNU system) executes
2089 a program file given a file descriptor already open on the file.
2093 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2094 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2096 * You can set the variable `libprefix' in `configparms' to specify a prefix
2097 to be prepended to installed library files; this makes it easy to install
2098 the GNU C library to be linked as `-lgnuc' or whatever.
2100 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2101 copies a limited number of characters from a string, and returns the
2102 address of the last character written.
2104 * You no longer need to check for whether the installed `stddef.h' is
2105 compatible with the GNU C library. configure now checks for you.
2107 * You can now define a per-stream `fileno' function to convert the
2108 stream's cookie into an integral file descriptor.
2110 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2111 allocates zero bytes of storage, and returns a unique pointer which
2112 you can pass to `realloc' or `free'. The behavior is undefined if
2113 you dereference this pointer.
2115 * The C library now runs on Sony NEWS m68k machines running either
2116 NewsOS 3 or NewsOS 4.
2118 * The new `syscall' function is a system-dependent primitive function
2119 for invoking system calls. It has the canonical behavior on Unix
2120 systems, including unreliable return values for some calls (such as
2121 `pipe', `fork' and `getppid').
2123 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2124 to `EAGAIN', which is the preferred name. On systems whose kernels
2125 use two distinct codes, the C library now translates EWOULDBLOCK to
2126 EAGAIN in every system call function.
2130 * The GNU C Library Reference Manual is now distributed with the library.
2131 `make dvi' will produce a DVI file of the printed manual.
2132 `make info' will produce Info files that you can read on line using C-h i
2133 in Emacs or the `info' program.
2134 Please send comments on the manual to bug-glibc-manual@gnu.org.
2136 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2138 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2140 * Jason Merrill has contributed a port to the Sequent Symmetry running
2141 Dynix version 3 (i386-sequent-dynix).
2143 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2144 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2146 * New function `memory_warnings' lets you arrange to get warnings when
2147 malloc is running out of memory to allocate, like Emacs gives you.
2149 * The C library now contains the relocating allocator used in Emacs 19 for
2150 its editing buffers. This allocator (ralloc) minimizes allocation
2151 overhead and fragmentation by moving allocated regions around whenever it
2152 needs to. You always refer to a ralloc'd region with a "handle" (a
2153 pointer to a pointer--an object of type `void **').
2155 * There is a new `printf' format: `%m' gives you the string corresponding
2156 to the error code in `errno'.
2158 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2159 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2160 pass, the `a' modifier says to fill in a `char **' you pass with a
2163 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2164 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2165 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2167 * `mkstemp' is a traditional Unix function to atomically create and open a
2168 uniquely-named temporary file.
2172 * The standard location for the file that says what the local timezone is
2173 has changed again. It is now `/usr/local/etc/localtime' (or more
2174 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2176 * The distribution no longer contains any files with names longer than 14
2179 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2180 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2182 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2186 * The configuration process has changed quite a bit. The `configure'
2187 script is now used just like the configuration scripts for other GNU
2188 packages. The `sysdeps' directory hierarchy is much rearranged.
2189 The file `INSTALL' explains the new scheme in detail.
2191 * The header files no longer need to be processed into ANSI C and
2192 traditional C versions. There is just one set of files to install, and
2193 it will work with ANSI or old C compilers (including `gcc -traditional').
2195 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2196 MIPS DECStation running Ultrix 4.
2198 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2199 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2200 made itself into a shared library.
2202 * Yet further improved support for the i386, running 4.3 BSD-like systems
2203 (such as Mach 3 with the Unix single-server), or System V.
2205 * New function `strncasecmp' to do case-insensitive string comparison
2206 with limited length.
2208 * New function `strsep' is a reentrant alternative to `strtok'.
2210 * New functions `scandir' and `alphasort' for searching directories.
2212 * New function `setenv' is a better interface to `putenv'.
2214 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2215 function for traversing a directory tree.
2217 * The GNU obstack package is now also part of the C library.
2218 The new function `open_obstack_stream' creates a stdio stream that
2219 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2220 formatted output directly to an obstack.
2222 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2223 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2225 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2227 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2228 things to your strings.
2230 * There are some new test programs: test-fseek, testmb, and testrand.
2232 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2233 These ports are not finished, but are a good starting place for really
2234 supporting those systems.
2236 * `/etc/localtime' is now the standard location for the file that says what
2237 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2238 This follows the general principle that `/etc' is the place for all local
2239 configuration files.
2241 * The C library header files now use `extern "C"' when used by the C++
2242 compiler, so the C library should now work with C++ code.
2244 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2245 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2248 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2249 function which uses the `merge sort' algorithm, and is said to be
2250 significantly faster than the old GNU `qsort' function. Merge sort is
2251 now the standard `qsort' function. The new algorithm can require a lot
2252 of temporary storage; so, the old sorting function is called when the
2253 required storage is not available.
2255 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2256 provides the Unix `crypt' function, plus some other entry points.
2258 * The code and header files taken from 4.4 BSD have been updated with the
2259 latest files released from Berkeley.
2261 ----------------------------------------------------------------------
2262 Copyright information:
2264 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2266 Permission is granted to anyone to make or distribute verbatim copies
2267 of this document as received, in any medium, provided that the
2268 copyright notice and this permission notice are preserved,
2269 thus giving the recipient permission to redistribute in turn.
2271 Permission is granted to distribute modified versions
2272 of this document, or of portions of it,
2273 under the above conditions, provided also that they
2274 carry prominent notices stating who last changed them.
2277 version-control: never
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