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, 10060, 10062, 10357, 10686, 11120, 11561, 12387,
13 12515, 12723, 13550, 13889, 13951, 13988, 14142, 14176, 14200, 14256,
14 14280, 14293, 14317, 14327, 14478, 14496, 14582, 14686, 14812, 14888,
15 14894, 14908, 14920, 14952, 14964, 14981, 14982, 14985, 14991, 14994,
16 14996, 15000, 15003, 15006, 15007, 15014, 15020, 15023, 15036, 15054,
17 15055, 15062, 15078, 15084, 15085, 15086, 15100, 15160, 15214, 15221,
18 15232, 15234, 15283, 15285, 15287, 15304, 15305, 15307, 15309, 15327,
19 15330, 15335, 15336, 15337, 15339, 15342, 15346, 15359, 15361, 15366,
20 15380, 15381, 15394, 15395, 15405, 15406, 15409, 15416, 15418, 15419,
21 15423, 15424, 15426, 15429, 15431, 15432, 15441, 15442, 15448, 15465,
22 15480, 15485, 15488, 15490, 15493, 15497, 15506, 15529, 15536, 15553,
25 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
28 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
29 fixed (Bugzilla #15330).
31 * Add support for calling C++11 thread_local object destructors on thread
32 and program exit. This needs compiler support for offloading C++11
33 destructor calls to glibc.
35 * Improved worst case performance of libm functions with double inputs and
38 * Support for priority inherited mutexes in pthread condition variables on
39 non-x86 architectures.
41 * Added a benchmark framework to track performance of functions in glibc.
43 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
44 It is based on draft TS 18661 and currently enabled as a GNU extension.
46 * Improved precision of the clock() function on Linux.
50 * The following bugs are resolved with this release:
52 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
53 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
54 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
55 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
56 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
57 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
58 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
59 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
60 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
61 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
62 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
63 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
64 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
65 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
66 14879, 14889, 14893, 14898, 14914.
68 * Optimization of memcpy for MIPS.
70 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
71 EMFILE has been fixed (Bugzilla #14889).
73 * The add-on ports collection is now distributed in the "ports" subdirectory
74 of the main GNU C Library distribution, rather than separately.
76 * Port to ARM AArch64 contributed by Linaro.
78 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
79 Optimized versions of memcpy, memset, and memcmp added for System z10 and
81 Implemented by Andreas Krebbel.
83 * The new function secure_getenv allows secure access to the environment,
84 returning NULL if running in a SUID/SGID process. This function replaces
85 the internal function __secure_getenv.
87 * SystemTap static probes have been added into the dynamic linker.
88 Implemented by Gary Benson.
90 * Optimizations of string functions strstr, strcasestr and memmem.
91 Implemented by Maxim Kuvyrkov.
93 * The minimum Linux kernel version that this version of the GNU C Library
94 can be used with is 2.6.16.
96 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
97 powerpc POWER7. Implemented by Will Schmidt.
99 * New configure option --disable-nscd builds the C library such that it
100 never attempts to contact the Name Service Caching Daemon (nscd).
101 New configure option --disable-build-nscd avoids building nscd itself;
102 this is the default if --disable-nscd is used.
104 * Improved support for cross-compilation, including cross-testing and
105 bootstrap builds without a previously built glibc.
107 * Several testsuite tests are now able to test multiple IFUNC variants of an
108 interface, rather than just testing the one that would be chooen by
111 * New configure options --with-bugurl and --with-pkgversion, for
112 distributors to use to embed their bug-reporting and package version
113 information in --help and --version output.
115 * The ttyname and ttyname_r functions on Linux now fall back to searching for
116 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
117 allows creation of chroots without the procfs mounted on /proc.
119 * The `crypt' function now fails if passed salt bytes that violate the
120 specification for those values. On Linux, the `crypt' function will
121 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
122 enabled, and fail on encrypted strings using the MD5 or DES algorithm
123 when the mode is enabled.
125 * The `clock_*' suite of functions (declared in <time.h>) is now available
126 directly in the main C library. Previously it was necessary to link with
127 -lrt to use these functions. This change has the effect that a
128 single-threaded program that uses a function such as `clock_gettime' (and
129 is not linked with -lrt) will no longer implicitly load the pthreads
130 library at runtime and so will not suffer the overheads associated with
131 multi-thread support in other code such as the C++ runtime library.
133 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
138 * The following bugs are resolved with this release:
140 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
141 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
142 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
143 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
144 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
145 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
146 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
147 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
148 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
149 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
150 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
151 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
152 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
153 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
154 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
155 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
156 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
157 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
158 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
159 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
160 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
161 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
164 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
165 configuring glibc with:
166 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
167 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
168 Implemented by H.J. Lu.
172 + define static_assert
174 + do not declare gets
176 + declare at_quick_exit and quick_exit also for ISO C11
178 + aligned_alloc. NB: The code is deliberately allows the size parameter
179 to not be a multiple of the alignment. This is a moronic requirement
180 in the standard but it is only a requirement on the caller, not the
185 + uchar.h support added
187 + CMPLX, CMPLXF, CMPLXL added
189 Implemented by Ulrich Drepper.
191 * Support for the IA-64 has been moved to ports.
193 * Remove support for anything but ELF binary format
195 * Checking versions of poll, ppoll added.
196 Implemented by Ulrich Drepper.
198 * More generic and 64-bit performance optimizations to math functions.
199 Implemented by Ulrich Drepper.
201 * New configure option --enable-obsolete-rpc makes the deprecated RPC
202 headers and functions available at compile time as they were before
203 version 2.14. This option will be removed at some time in the future
204 after the TI-RPC library becomes fully sufficient for the needs of
205 existing applications.
207 * Compatibility code for Linux kernel versions before 2.4 has been removed.
208 Note that glibc is not expected to work with any Linux kernel version
211 * New header <sys/auxv.h> and function getauxval allowing easy access to
212 the AT_* key-value pairs passed from the Linux kernel. The header also
213 defines the HWCAP_* bits associated with the AT_HWCAP key.
215 * New locales: mag_IN
217 * New configure option --enable-systemtap builds SystemTap static probes
218 into libc for setjmp and longjmp and into libpthread for various operations.
219 So far the setjmp/longjmp probes and some of the libpthread probes are
220 provided only for i*86 and x86_64.
221 Implemented by Roland McGrath and Rayson Ho.
223 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
225 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
228 * More optimized functions for SPARC. Implemented by David S. Miller.
230 * Improved support for cross-compilation, especially bootstrap builds
231 without a previously built glibc.
233 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
234 Chris Metcalf from Tilera.
236 * Support for the old ARM ABI has been removed from ports. Only the EABI is
237 now supported for ARM processors.
239 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
240 as the name of the dynamic linker, to distinguish it from the
241 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
243 * Support for CRIS has been removed from ports.
245 * A new class of installed header has been documented for low-level
246 platform-specific functionality. PowerPC added the first instance with a
247 function to provide time base register access. Contributed by Tulio
248 Magno Quites Machado Filho.
250 * ix86 configurations now install header files that are consistent with
251 what x86-64 configurations install. These same header files can be used
252 for -m32, -m64, or -mx32 builds.
253 Contributed by H.J. Lu.
255 * Math library bug fixes. A thorough audit of all open math library bugs was
256 conducted by Joseph Myers. Significant progress was made on many math
257 library bugs resulting in more accurate exceptions and function results.
258 Many thanks to all those that contributed including Andreas Jaeger for his
259 patch review and work on the x87 trigonometric instruction issues.
261 * Timezone data is no longer installed. Timezone-related binaries and scripts
262 will continue to be installed. Users should obtain their timezone data from
263 their distribution provider or from the tzdata package at
264 <ftp://munnari.oz.au/pub/>.
268 * The following bugs are resolved with this release:
270 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
271 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
272 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
273 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
274 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
275 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
276 13484, 13506, 13515, 13523, 13524, 13538, 13540
278 * New program pldd to list loaded object of a process
279 Implemented by Ulrich Drepper.
281 * Add nss_db support back to glibc. No more dependency on Berkeley db
282 and support for initgroups lookups.
283 Implemented by Ulrich Drepper.
285 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
286 Contributed by HJ Lu.
288 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
289 Contributed by HJ Lu.
291 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
292 on x86-32 and x86-64.
293 Contributed by Liubov Dmitrieva.
295 * Optimized strchr and strrchr for SSE on x86-32.
296 Contributed by Liubov Dmitrieva.
298 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
299 for x86-64 and x86-32.
300 Contributed by Liubov Dmitrieva.
302 * New interfaces: scandirat, scandirat64
303 Implemented by Ulrich Drepper.
305 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
306 Implemented by Ulrich Drepper.
308 * nscd now also caches the netgroup database.
309 Implemented by Ulrich Drepper.
311 * Integrate libm with gcc's -ffinite-math-only option.
312 Implemented by Ulrich Drepper.
314 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
315 to math functions. Implemented by Ulrich Drepper.
317 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
318 Implemented by Ulrich Drepper.
320 * New Linux interfaces: process_vm_readv, process_vm_writev
322 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
323 Implemented by Ulrich Drepper.
325 * Optimized nearbyint and strcasecmp for PPC.
326 Implemented by Adhemerval Zanella.
328 * New locales: bho_IN, unm_US, es_CU, ta_LK
332 * The following bugs are resolved with this release:
334 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
335 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
336 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
337 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
338 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
339 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
340 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
341 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
342 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
343 12795, 12811, 12813, 12814, 12841
345 * The RPC implementation in libc is obsoleted. Old programs keep working
346 but new programs cannot be linked with the routines in libc anymore.
347 Programs in need of RPC functionality must be linked against TI-RPC.
348 The TI-RPC implementation is IPv6 enabled and there are other benefits.
350 Visible changes of this change include (obviously) the inability to link
351 programs using RPC functions without referencing the TI-RPC library and the
352 removal of the RPC headers from the glibc headers.
353 Implemented by Ulrich Drepper.
355 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
356 syncfs, setns, sendmmsg
358 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
359 yue_HK, lij_IT, mhr_RU
361 * New encodings: CP770, CP771, CP772, CP773, CP774
363 * New program sotruss to trace calls through PLTs
364 Implemented by Ulrich Drepper.
366 * The malloc hook implementation is marked deprecated and will be removed
367 from the default implementation in the next version. The design never
368 worked ever since the introduction of threads. Even programs which do
369 not create threads themselves can use multiple threads created internally.
373 * The following bugs are resolved with this release:
375 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
376 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
377 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
378 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
381 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
383 * POWER7 optimizations: memset, memcmp, strncmp
385 * New optimized string functions for x86-64: strnlen (SSE2),
386 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
387 Implemented by Ulrich Drepper.
391 * The following bugs are resolved with this release:
393 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
394 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
395 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
396 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
397 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
398 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
399 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
400 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
402 * New interfaces: pthread_getname_np, pthread_setname_np
404 * New Linux interface: recvmmsg
406 * STT_GNU_IFUNC implemented for Sparc by David Miller.
408 * The dynamic linker now recognizes supported ABI versions from the
409 EI_ABIVERSION field in the ELF header.
410 Implemented by Ulrich Drepper.
412 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
413 will not be used to fill in password fields in the passwd.byname replies.
414 Instead it is used to synthesize the shadow.byname table, should it be
415 missing. This is a useful mode in some installations involving Solaris.
416 Implemented by Ulrich Drepper.
418 * New locales: kok_IN, sq_MK, cv_RU
422 * The following bugs are resolved with this release:
424 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
425 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
426 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
427 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
428 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
429 10789, 10817, 10823, 10840, 10847
431 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
433 Implemented by Ulrich Drepper.
435 * Checking version of longjmp added that fails if an uninitialized stack
436 frame would be created. Implemented by Ulrich Drepper.
438 * STT_GNU_IFUNC is now supported in static executables.
439 Implemented by H.J. Lu.
441 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
443 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
444 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
445 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
446 Contributed by H.J. Lu.
448 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
449 Implemented by Ulrich Drepper.
451 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
453 Contributed by H.J. Lu.
455 * Support for fma instruction in AVX on x86-64.
456 Implemented by H.J. Lu and Ulrich Drepper.
458 * AVX support in x86-64 auditing support in ld.so.
459 Implemented by H.J. Lu.
461 * STB_GNU_UNIQUE support added.
462 Implemented by Ulrich Drepper.
464 * Implement second fallback mode for optimized DNS lookup for even more
465 broken environments. If two requests from the same port are not
466 handled correctly close the socket and open a new one before sending
467 the second request. The 'single-request-reopen' option in /etc/resolv.conf
468 can be used to select this mode right away, instead of rediscovering the
469 necessity is every process again.
470 Implemented by Ulrich Drepper.
472 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
473 Implemented by Adam Tkac.
475 * Optimized iconv conversions for S390x.
476 Implemented by Andreas Krebbel.
478 * Using condvars with PI mutexes is now more efficient due to kernel
479 support for requeueing to PI futexes. NPTL support added for x86-64.
480 Implemented by Ulrich Drepper.
482 * New locales: ps_AF, my_MM
486 * The following bugs are resolved with this release:
488 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
489 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
490 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
491 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
492 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
494 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
495 Implemented by Ulrich Drepper.
497 * New Linux interfaces: accept4, fallocate, fallocate64.
498 Implemented by Ulrich Drepper.
500 * Correct declarations of string function when used in C++ code. This
501 could lead to compile errors for invalid C++ code.
503 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
506 * New POSIX 2008 interface: psiginfo
507 Implemented by Ulrich Drepper.
509 * New ISO C++1x interfaces: quick_exit, at_quick_exit
510 Implemented by Ulrich Drepper.
512 * Support for selecting between multiple function definitions at runtime
513 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
515 * The libcrypt library can now use the hash function implementations in
516 NSS. Implemented by Ulrich Drepper.
518 * The malloc implementation can be compiled to be less memory efficient
519 but higher performing in multi-threaded programs.
520 Implemented by Ulrich Drepper.
522 * New locales: nan_TW@latin, ks_IN
524 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
525 Implemented by Ulrich Drepper.
527 * Extended printf hook support. It is possible to use user-defined types
528 and extend existing format specifiers.
529 Implemented by Ulrich Drepper.
531 * Handling for group shadow files has been added.
532 Implemented by Ulrich Drepper.
534 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
535 servers (the case, e.g., for some people using the built-in DNS
536 server in ADSL modems/routers). There is a once-per-process timeout
537 in case of a broken server. To avoid it, users can run nscd or put
538 'options single-request' in /etc/resolv.conf.
539 Implemented by Ulrich Drepper.
543 * The following bugs are resolved with this release:
545 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
546 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
547 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
548 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
549 6968, 6974, 6980, 6995, 7008, 7009, 7029
551 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
552 up at the same time. Implemented by Ulrich Drepper.
554 * TLS descriptors for LD and GD on x86 and x86-64.
555 Implemented by Alexandre Oliva.
557 * getaddrinfo now handles DCCP and UDPlite.
558 Implemented by Ulrich Drepper.
560 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
561 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
562 Implemented by Ulrich Drepper.
564 * New implementation of memmem, strstr, and strcasestr which is O(n).
565 Implemented by Eric Blake.
567 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
569 * Implement "e" option for popen to open file descriptor with the
570 close-on-exec flag set. Implemented by Ulrich Drepper.
572 * Implement "b" mode for fmemopen. In this mode writes writes don't
573 implicitly add a NUL byte and seeks from the end of the buffer really
574 use the buffer end, not the string length as the basis.
575 Implemented by Ulrich Drepper.
577 * Many functions, exported and internal, now atomically set the close-on-exec
578 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
580 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
582 Implemented by Pravin Satpute.
584 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
588 * The following bugs are resolved with this release:
590 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
591 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
592 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
593 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
594 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
595 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
596 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
598 * New locales: bo_CN, bo_IN, shs_CA.
600 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
602 * Sorting rules for some Indian languages (Devanagari and Gujarati).
603 Implemented by Pravin Satpute.
605 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
607 * nscd caches now all timeouts for DNS entries
608 Implemented by Ulrich Drepper.
610 * nscd is more efficient and wakes up less often.
611 Implemented by Ulrich Drepper.
613 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
614 vdprintf, and obstack_vprintf.
615 Implemented by Jakub Jelinek.
617 * Faster memset for x86-64.
618 Implemented by Harsha Jagasia and H.J. Lu.
620 * Faster memcpy on x86.
621 Implemented by Ulrich Drepper.
623 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
624 Implemented by Ulrich Drepper.
626 * Faster sqrt and sqrtf implemention for some PPC variants.
627 Implemented by Steven Munroe.
631 * The following bugs are resolved with this release:
633 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
634 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
635 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
636 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
637 5071, 5103, 5104, 5112, 5113, 5184, 5186
639 * More checking functions: fread, fread_unlocked, open*, mq_open.
640 Implemented by Jakub Jelinek and Ulrich Drepper.
642 * Extend fortification to C++. Implemented by Jakub Jelinek.
644 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
645 by not recognizing 'a' as a modifier when those specs are requested.
646 Implemented by Jakub Jelinek.
648 * PPC optimizations to math and string functions.
649 Implemented by Steven Munroe.
651 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
652 options to be passed. Implemented by Ulrich Drepper.
654 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
656 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
657 Implemented by Ulrich Drepper.
659 * Handle private futexes in the NPTL implementation.
660 Implemented by Jakub Jelinek and Ulrich Drepper.
662 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
663 Implemented by Roland McGrath and Ulrich Drepper.
665 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
667 * SHA-256 and SHA-512 based password encryption.
668 Implemented by Ulrich Drepper.
670 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
671 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
674 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
675 Implemented by Ulrich Drepper.
679 * The following bugs are resolved with this release:
681 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
682 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
683 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
684 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
685 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
686 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
687 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
690 * New Linux interfaces: epoll_pwait, sched_getcpu.
692 * New generic interfaces: strerror_l.
694 * nscd can now cache the services database. Implemented by Ulrich Drepper.
698 * The following bugs are resolved with this release:
700 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
701 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
702 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
703 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
704 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
705 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
706 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
707 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
708 3225, 3251, 3252, 3253, 3273
710 * For Linux, the sorting of addresses returned by getaddrinfo now also
711 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
712 Implemented by Ulrich Drepper.
714 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
715 Implemented by Ulrich Drepper.
717 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
719 * New iconv module for MIK. Contributed by Alexander Shopov.
721 * For sites with broken group and/or passwd database, the auto-propagate
722 option of nscd can prevent creating ID lookup entries from the results
723 of a name lookup and vice versa. This usually is no problem but some
724 site might have problems with the default behavior.
725 Implemented by Ulrich Drepper.
727 * Iterating over entire database in NIS can be slow. With the
728 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
729 to trade time for memory. The entire database will be read at once.
730 Implemented by Ulrich Drepper.
732 * The interfaces introduced in RFC 3542 have been implemented by
735 * Support for the new ELF hash table format was added by Ulrich Drepper.
737 * Support for priority inheritance mutexes added by Jakub Jelinek and
740 * Support for priority protected mutexes added by Jakub Jelinek.
742 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
743 or_IN, csb_PL, fy_NL, sr_ME.
747 * More overflow detection functions.
749 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
750 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
752 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
753 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
754 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
755 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
756 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
757 by Masahide Washizawa.
759 * It is now possible to install audit libraries for the dynamic linker using
760 LD_AUDIT. Implemented by Ulrich Drepper.
762 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
763 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
764 For a libc and libpthread that works well on Linux 2.4 kernels, we
765 recommend using the stable 2.3 branch.
767 * The new function open_wmemstream acts like open_memstream,
768 but uses a wchar_t wide character buffer.
770 * The new function ppoll is an improved version of poll, similar to pselect.
772 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
773 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
774 renameat, unlinkat, linkat, symlinkat, readlinkat.
776 * New Linux kernel system calls: unshare,
777 inotify_init, inotify_add_watch, inotify_rm_watch.
779 * The euidaccess function is now also known by the alias eaccess,
780 for compatibility with some other systems.
782 * Timezone data updated to 2006b version.
786 * The following bugs are resolved with this release:
788 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
789 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
790 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
791 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
792 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
793 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
795 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
797 * As of this release, GCC 4 can be used to compile the C Library.
799 * Timezone data updated to 2005m version.
803 * The following bugs are resolved with this release:
805 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
806 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
807 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
808 777, 787, 821, 822, 823, 825
810 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
814 * Support for RFC 3678. Real implementations exist only for Linux so far.
815 Implemented by Ulrich Drepper.
817 * nscd can now cache entries persistently. Expiring entries are reloaded.
818 For speedups the cache can be shared in memory with client processes.
819 Implemented by Ulrich Drepper.
821 * nscd can now perform SELinux checks.
822 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
824 * getaddrinfo queries are now cached. Canonical name lookup is performed
826 Implemented by Ulrich Drepper.
828 * The nothrow function attribute is used when headers are used by gcc when
829 compiling C code. This can avoid significant amounts of exception
832 * The malloc functions perform more error checking and are stricter when
833 it comes to reacting on errors. The default action is to terminate
834 the process after showing an error message. Implemented by Ulrich Drepper.
836 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
837 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
839 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
840 namespaces using the new function dlmopen(). This feature is of course,
841 like most other dynamic loading functionality, not available in statically
842 linked applications. Implemented by Ulrich Drepper.
844 * Low-overhead boundary checking variants of string and some stdio functions
845 were added. These are to be used in conjunction with a gcc patch by
846 Jakub Jelinek which adds calls to these functions if possible.
847 Implemented by Jakub Jelinek and Ulrich Drepper.
849 * Old code for several operating systems and machine architectures that
850 have not been in working condition in a long time have been removed from
851 the main source tree maintained by the GNU C Library's maintainers.
852 These files are now reside in the separate `ports' source module
853 that is usable as an add-on when building the library.
857 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
858 interrogate the dynamic linker, compatible with the Solaris interface.
860 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
861 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
863 * getifaddrs now uses the netlink interface on Linux to get its information.
864 Implemented by Thorsten Kukuk.
866 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
867 Implemented by Ulrich Drepper.
869 * support for non-executable stacks on x86 has been added. Changes mostly
872 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
875 * getaddrinfo now performs destination address selection according to
880 * Thread-safe interfaces for many functions that access locale data
881 were added in version 2.3, but these features were omitted from NEWS.
882 Many functions have variants with an `_l' suffix that take a `locale_t'
883 object as a parameter rather than consulting the current locale.
884 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
885 create and maintain `locale_t' objects. Additionally, the new function
886 `uselocale' sets "the current locale" (as used by functions not so
887 parameterized) set for an individual thread. These features were added
888 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
890 * The functions getresuid, getresgid, setresuid, and setresgid, which
891 have long been available on Linux, are now declared in <unistd.h>
892 and are now also available on the Hurd.
894 * ELF thread-local storage support (TLS) now works on x86-64.
896 * The new dynamic string token $LIB is expanded in shared library names.
897 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
899 * Aldy Hernandez contributed complete software floating point support for
900 PowerPC machines with no FPU.
902 * fexecve is implemented on Linux.
904 * The `btowc' function should work at least twice as fast due to
905 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
907 * With approriate thread add-ons cancelable functions are now implemented
908 in libc.so as well. No need to call the function in libpthread. This
909 change allowed to finally disable the incorrect and expensive handling
910 of weak definition in ld.so.
912 * Yet more PLT entries in libc.so have been removed. We finally arrived
913 at the bare minimum. Startup times improved appropriately.
915 * Support for the new Linux/x86 system call interface was added. The
916 AT_SYSINFO auxiliary vector entry is recognized and handled.
920 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
923 * iconv (the program and the interface) now accepts empty names (excluding
924 options like //TRANSLIT) to mean "use charset of current locale".
926 * localedef can now transliterate characters in strings which are not in
927 the provided charmap. The information from the input locale is used.
929 * Prelinking support was added for ELF targets. This requires additional
930 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
932 * Read-only stdio streams now use mmap to speed up operation by eliminating
933 copying and buffer underflows. To use add 'm' to the mode string of
934 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
936 * The malloc functions were completely rewritten by Wolfram Gloger based
937 on Doug Lea's malloc-2.7.0.c.
939 * Isamu Hasegawa contributed a completely new and POSIX-conformant
940 implementation of regex.
942 * Bruno Haible upgraded the iconv and locale implementation to support
945 * Contents of the LC_* and LANG environment variables in the CEN style are
946 not recognized anymore. It never was used. Change by Ulrich Drepper.
948 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
949 thread-local storage (TLS) ABI on some platforms.
950 Changes by Ulrich Drepper. SH support by Kaz Kojima.
952 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
953 EUC-JISX0213, and TSCII.
955 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
956 BSD-compatible interface for getting all network interface addresses.
957 Implementation for IPv4 by Roland McGrath.
959 * Loading of locale data is faster due to the introduction of a locale
960 archive. Implemented by Roland McGrath and Ulrich Drepper.
962 * Startup times are significantly reduced by not using exported functions
963 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
966 * Steven Munroe contributed a port to PowerPC64/Linux.
970 * The Hurd now uses the GNU libio implementation of stdio rather than the
971 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
973 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
974 with the same behavior as the Linux system call of the same name.
978 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
979 128-bit long double format.
981 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
982 IBM1161, and IBM1162 charsets.
984 * Andreas Jaeger contributed a port to x86-64/Linux.
986 * Peter Bruin contributed a port to PowerPC/Hurd.
988 * libc functions using I/O streams now can handle wide-oriented streams
991 * optimizations in the dynamic linker. Binaries created by recent binutils
992 versions start up quicker due to reduced time spent on relocations.
994 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
998 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
999 asinh, atanh, j0 for the 128-bit long double format.
1001 * Bruno Haible updated all the code handling Unicode in some form to
1002 support Unicode 3.1.
1004 * Speed of regex for single-byte locales is back to previous levels.
1005 Patch by Isamu Hasegawa.
1007 * Alpha, SPARC, and IA-64 now also using floating stacks.
1009 * Startup time of internationalized applications greatly improved through
1010 iconv cache. Use iconvconfig to generate the cache file.
1011 Contributed by Ulrich Drepper.
1013 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1014 severe performance problems. Patch by David Mosberger.
1016 * The Hurd port got a lot more functionality like AIO, various stdio
1017 extensions, etc. Mainly done by Roland McGrath.
1019 * mtrace can now lookup symbols in shared libraries.
1023 * Intel's IA-64 math library is largely integrated. It provides fast and
1024 accurate implementatations for most basic and standard math functions
1025 in float, double, and long double format.
1027 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1028 and asin for the 96-bit long double format and asin, log, tan for the
1029 128-bit long double format.
1031 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1032 The basic double functions exist today. Contributed by Abraham Ziv
1033 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1034 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1036 * An asynchronous name lookup library was added. The interface is designed
1037 after POSIX AIO. The proposal was circulated beforehand to get comments.
1038 No negative ones came in. Implemented by Ulrich Drepper.
1040 * Port to S390/64bit contributed by Martin Schwidefsky
1041 <schwidefsky@de.ibm.com>.
1043 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1044 of functions for Linux/IA-64.
1046 * The RPC code is now thread safe. Threads can now use the same service
1047 of different services at the same time. Patch by Eric Norum
1048 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1050 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1051 family of functions for Linux/S390.
1053 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1054 of functions for Linux/x86.
1056 * Port to Linux/CRIS contributed by Axis Communications.
1060 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1061 we can now check for namespace violations and missing declarations. The
1062 result is that almost all headers are now Unix-compliant (as defined in
1063 the upcoming XPG6). The negative side is that some programs might need
1064 corrections, too, if they depend on the incorrect form of the headers in
1065 previous versions which defined too many symbols and included too many
1068 * regex now handles multibyte character sets correctly.
1069 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1071 * iconv (the program) does now conform to the upcoming XPG6 and handles
1072 charmaps. Instead of the charset names the path of charmaps can be
1073 provided and the conversion happens based on this data.
1074 Contributed by Ulrich Drepper.
1076 * The locale program now provides detailed information about the installed
1081 only lists the names of the supported locales
1085 provides details such as country, language, and codeset name.
1086 Contributed by Ulrich Drepper.
1090 * The gencat program now parses the input file according to the charset
1091 selected by the LC_CTYPE category. This is important for stateful
1092 character sets. To make generating catalogs easier there is a way
1093 to overwrite the charset selected by the locale: before the first
1094 message or $ quote line the catalog can contain a line like
1096 $ codeset=ISO-8859-2
1098 to select the charset (ISO-8859-2 in this case).
1100 Implemented by Shinya Hanataka and Ulrich Drepper.
1102 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1103 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1104 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1106 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1107 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1109 * The LANGUAGE environment variable is now ignored unless the locale is
1110 changed from the default "C" locale.
1112 * The usual bug fixes.
1116 * Greg McGary added runtime support for bounds checking using gcc's
1117 new -fbounded-pointers option. ix86 target is complete. PowerPC
1120 * Thorsten Kukuk added secure mode support to nscd.
1122 * The Berkeley db libraries have been removed.
1124 Related, the nss_db module is now in a separate package since it
1125 obviously requires a database library being available.
1127 * Wide character I/O streams implemented by Ulrich Drepper.
1129 * Functions from the extended socket API added by Ulrich Drepper.
1131 * Functions feenableexcept and fedisableexcept to control the
1132 behaviour of individual exceptions have been added by Andreas Jaeger.
1134 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1136 * The resolver code has been updated from bind 8.2.3-T5B which supports
1137 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1140 This change could in some situations effect backward compatibility. Since
1141 now `_res' is a thread-local instead of a global variable, modifying it
1142 in one thread does not have any effect in other threads.
1144 The resolver library was also extended to allow IPv6 as the transport
1145 protocol for the requests. This work was done by Stig Venaas.
1147 * Compatibility code for K&R C compilers has been removed from the
1148 header files. A ISO C compiler is needed to use the library
1149 (conforming to either C89 or C99 standard).
1151 * Complete rewrite of the localedef program to support multibyte character
1152 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1153 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1154 Implemented by Ulrich Drepper.
1156 Bruno Haible significantly improved the generation and use of the data
1157 structures for the wide character tables.
1159 * Plural handling in gettext implemented by Ulrich Drepper.
1161 * The utmp daemon has been removed.
1163 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1165 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1168 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1170 * POSIX barriers implemented by Kaz Kylheku.
1172 * POSIX spawn function family implemented by Ulrich Drepper.
1174 * POSIX spinlocks are now available.
1176 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1178 * the configure option --enable-kernel=X.Y.Z allows to strip out
1179 compatibility for kernel versions before X.Y.Z. This is currently only
1180 implemented for Linux.
1182 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1183 field sin6_scope_id. This means that all programs using IPv6 should be
1184 recompiled. Don't expect binary compatibility with previous glibc
1187 * various conversion modules for IBM character sets contributed by
1190 * IA-64 port by Jes Sorensen and HJ Lu.
1204 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1206 * New xdr functions are added; some rpc functions are now 64bit clean.
1208 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1210 * Fixed known incompatibilities with glibc 2.0.
1212 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1214 * Optimized a number of functions (especially the ELF dynamic loader).
1216 * Update timezone data files.
1218 * lots of charmaps corrections
1220 * some new locale definitions and charmaps
1225 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1226 conform to POSIX member type requirements. Symbol versions have been
1227 adjusted as needed within the library, and for direct use by applications,
1228 but there is potential for problems if third-party libraries use
1229 struct timeval as part of their interface. This does not present
1230 a problem for X and other "essential" system libraries.
1232 * An additional locale model to support C++ Standard Library locale
1233 model and probably more was implemented by Ulrich Drepper.
1235 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1238 * Miles Bader provided the `argp' function family to support hierachical
1239 command line argument parsing, layered on top of getopt.
1241 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1243 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1246 * scanf recognizes the %a and %A format for scanning floating point numbers.
1248 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1249 information and interfaces for the available integer types.
1251 * about 130 new math functions were added to implement the ISO C9x math
1254 * the new header <complex.h> contains definitions of the complex math
1255 functions from ISO C 9X.
1257 * the new header <tgmath.h> defines generic macros to use complex or
1258 real valued functions.
1260 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1262 * Andreas Jaeger provided a test suite for the math library.
1264 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1266 * Ulrich Drepper added character set conversion functions (iconv).
1268 * Optimized string functions have been added.
1270 * The localedata addon is now part of glibc.
1272 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1274 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1275 daemon for NSS (nscd).
1277 Missing a better place here are some numbers on improvements. Under
1278 Linux 2.1.125 un-tar-ing the kernel sources takes
1282 using local files 12.19s 6.88s 22.91s
1284 using NIS 13.92s 8.91s 26.34s
1286 using NIS & nscd 10.37s 7.34s 25.30s
1288 using NIS+ 27.57s 30.37s 640.46s
1290 using NIS+ & nscd 10.25s 7.83s 26.51s
1292 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1294 Keep in mind that non-namelookup related operations dominate above times.
1295 It was just a common complain that using NIS+ unpacking the kernel is
1298 [1] The old nscd implementation is not available anymore since it was
1299 distributed with glibc up to version 2.0.98 and thus is now replaced.
1301 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1303 * Mark Kettenis provided a Hesiod NSS module.
1305 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1306 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1308 * rcmd can now handle netgroups (Dick Streefland).
1310 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1313 * Support for the IPv6 protocol has been added to the socket API, as per the
1314 latest draft standards.
1316 * Support for Linux 2.2 has been added.
1318 * Interface changes relative to the latest 2.0.x release:
1319 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1320 addseverity NEW: Unix98
1321 alphasort64 NEW: LFS
1322 argp_err_exit_status NEW: argp, GNU ext
1323 argp_error NEW: argp, GNU ext
1324 argp_failure NEW: argp, GNU ext
1325 argp_help NEW: argp, GNU ext
1326 argp_parse NEW: argp, GNU ext
1327 argp_program_bug_address NEW: argp, GNU ext
1328 argp_program_version NEW: argp, GNU ext
1329 argp_program_version_hook NEW: argp, GNU ext
1330 argp_state_help NEW: argp, GNU ext
1331 argp_usage NEW: argp, GNU ext
1332 authdes_create NEW: Secure RPC
1333 authdes_getucred NEW: Secure RPC
1334 authdes_pk_create NEW: Secure RPC
1335 backtrace NEW: GNU ext.
1336 backtrace_symbols NEW: GNU ext.
1337 backtrace_symbols_fd NEW: GNU ext.
1339 cacosf NEW: ISO C 9x
1340 cacosh NEW: ISO C 9x
1341 cacoshf NEW: ISO C 9x
1342 cacoshl NEW: ISO C 9x
1343 cacosl NEW: ISO C 9x
1350 casinf NEW: ISO C 9x
1351 casinh NEW: ISO C 9x
1352 casinhf NEW: ISO C 9x
1353 casinhl NEW: ISO C 9x
1354 casinl NEW: ISO C 9x
1356 catanf NEW: ISO C 9x
1357 catanh NEW: ISO C 9x
1358 catanhf NEW: ISO C 9x
1359 catanhl NEW: ISO C 9x
1360 catanl NEW: ISO C 9x
1361 cbc_crypt NEW: Secure RPC
1365 ccoshf NEW: ISO C 9x
1366 ccoshl NEW: ISO C 9x
1372 cimagf NEW: ISO C 9x
1373 cimagl NEW: ISO C 9x
1374 clearerr_locked REMOVED
1375 clntunix_create NEW: sunrpc ext
1377 clog10 NEW: ISO C 9x
1378 clog10f NEW: ISO C 9x
1379 clog10l NEW: ISO C 9x
1389 cprojf NEW: ISO C 9x
1390 cprojl NEW: ISO C 9x
1392 crealf NEW: ISO C 9x
1393 creall NEW: ISO C 9x
1398 csinhf NEW: ISO C 9x
1399 csinhl NEW: ISO C 9x
1402 csqrtf NEW: ISO C 9x
1403 csqrtl NEW: ISO C 9x
1407 ctanhf NEW: ISO C 9x
1408 ctanhl NEW: ISO C 9x
1410 des_setparity NEW: Secure RPC
1411 ecb_crypt NEW: Secure RPC
1412 endutxent NEW: Unix98
1414 exp10f NEW: ISO C 9x
1415 exp10l NEW: ISO C 9x
1419 fattach NEW: STREAMS
1420 fdetach NEW: STREAMS
1424 feclearexcept NEW: ISO C 9x
1425 fegetenv NEW: ISO C 9x
1426 fegetexceptflag NEW: ISO C 9x
1427 fegetround NEW: ISO C 9x
1428 feholdexcept NEW: ISO C 9x
1430 feraiseexcept NEW: ISO C 9x
1431 ferror_locked REMOVED
1432 fesetenv NEW: ISO C 9x
1433 fesetexceptflag NEW: ISO C 9x
1434 fesetround NEW: ISO C 9x
1435 fetestexcept NEW: ISO C 9x
1436 feupdateenv NEW: ISO C 9x
1437 fflush_locked REMOVED
1441 fgets_unlocked NEW: GNU ext.
1442 fileno_locked REMOVED
1454 fputc_locked REMOVED
1455 fputs_unlocked NEW: GNU ext.
1456 fread_unlocked NEW: GNU ext.
1461 fstatvfs NEW: Unix98
1465 ftruncate64 NEW: LFS
1467 fwrite_unlocked NEW: GNU ext.
1468 gai_strerror NEW: IPv6
1472 getchar_locked REMOVED
1474 getdate_err NEW: Unix98
1475 getdate_r NEW: GNU ext.
1477 getnameinfo NEW: IPv6
1478 getnetname NEW: Secure RPC
1479 getpmsg NEW: STREAMS
1480 getpt NEW: Unix98 PTY
1481 getrlimit64 NEW: LFS
1482 getutxent NEW: Unix98
1483 getutxid NEW: Unix98
1484 getutxline NEW: Unix98
1485 glob64 NEW: GNU ext.
1486 globfree64 NEW: GNU ext.
1487 gnu_get_libc_release NEW: GNU ext.
1488 gnu_get_libc_version NEW: GNU ext.
1489 grantpt NEW: Unix98 PTY
1490 host2netname NEW: Secure RPC
1492 iconv_close NEW: iconv
1493 iconv_open NEW: iconv
1494 if_freenameindex NEW: IPv6
1495 if_indextoname NEW: IPv6
1496 if_nameindex NEW: IPv6
1497 if_nametoindex NEW: IPv6
1498 in6addr_any NEW: IPv6
1499 in6addr_loopback NEW: IPv6
1500 inet6_isipv4mapped NEW: IPv6
1501 isastream NEW: STREAMS
1502 iswblank NEW: GNU ext.
1503 key_decryptsession NEW: Secure RPC
1504 key_decryptsession_pk NEW: Secure RPC
1505 key_encryptsession NEW: Secure RPC
1506 key_encryptsession_pk NEW: Secure RPC
1507 key_gendes NEW: Secure RPC
1508 key_get_conv NEW: Secure RPC
1509 key_secretkey_is_set NEW: Secure RPC
1510 key_setnet NEW: Secure RPC
1511 key_setsecret NEW: Secure RPC
1512 llrint NEW: ISO C 9x
1513 llrintf NEW: ISO C 9x
1514 llrintl NEW: ISO C 9x
1515 llround NEW: ISO C 9x
1516 llroundf NEW: ISO C 9x
1517 llroundl NEW: ISO C 9x
1522 lrintf NEW: ISO C 9x
1523 lrintl NEW: ISO C 9x
1524 lround NEW: ISO C 9x
1525 lroundf NEW: ISO C 9x
1526 lroundl NEW: ISO C 9x
1528 makecontext NEW: Unix98
1529 mempcpy NEW: GNU ext.
1532 modify_ldt NEW: kernel
1536 nearbyint NEW: ISO C 9x
1537 nearbyintf NEW: ISO C 9x
1538 nearbyintl NEW: ISO C 9x
1539 netname2host NEW: Secure RPC
1540 netname2user NEW: Secure RPC
1541 nexttoward NEW: ISO C 9x
1542 nexttowardf NEW: ISO C 9x
1543 nexttowardl NEW: ISO C 9x
1547 passwd2des NEW: Secure RPC
1549 pow10f NEW: GNU ext.
1550 pow10l NEW: GNU ext.
1553 printf_size NEW: GNU ext.
1554 printf_size_info NEW: GNU ext.
1555 profil_counter REMOVED
1556 pthread_mutexattr_getkind_np REPLACED
1557 pthread_mutexattr_setkind_np REPLACED
1558 ptsname NEW: Unix98 PTY
1559 ptsname_r NEW: Unix98 PTY
1561 putchar_locked REMOVED
1562 putgrent NEW: GNU ext.
1564 putpmsg NEW: STREAMS
1565 pututxline NEW: Unix98
1569 readdir64_r NEW: LFS
1570 remquo NEW: ISO C 9x
1571 remquof NEW: ISO C 9x
1572 remquol NEW: ISO C 9x
1574 roundf NEW: ISO C 9x
1575 roundl NEW: ISO C 9x
1577 scalbln NEW: ISO C 9x
1578 scalblnf NEW: ISO C 9x
1579 scalblnl NEW: ISO C 9x
1581 sendfile NEW: kernel
1582 setcontext NEW: Unix98
1583 setrlimit64 NEW: LFS
1584 setutxent NEW: Unix98
1586 sigignore NEW: Unix98
1587 sigqueue NEW: POSIX.1b
1588 sigrelse NEW: Unix98
1589 sigset NEW: POSIX.1b
1590 sigtimedwait NEW: POSIX.1b
1591 sigwaitinfo NEW: POSIX.1b
1592 sincos NEW: GNU ext.
1593 sincosf NEW: GNU ext.
1594 sincosl NEW: GNU ext.
1598 strcasestr NEW: GNU ext.
1599 strtoimax NEW: ISO C 9x
1600 strtoumax NEW: ISO C 9x
1601 strverscmp NEW: GNU ext.
1602 svcauthdes_stats NEW: Secure RPC
1603 svcunix_create NEW: sunrpc etx
1604 svcunixfd_create NEW: sunrpc ext
1605 swapcontext NEW: Unix98
1606 tcgetsid NEW: Unix98 PTY
1607 tdestroy NEW: GNU ext.
1608 tgamma NEW: ISO C 9x
1609 tgammaf NEW: ISO C 9x
1610 tgammal NEW: ISO C 9x
1614 truncf NEW: ISO C 9x
1615 truncl NEW: ISO C 9x
1617 unlockpt NEW: Unix98 PTY
1618 updwtmpx NEW: Unix98
1619 user2netname NEW: Secure RPC
1620 utmpxname NEW: Unix98
1621 versionsort NEW: GNU ext.
1622 versionsort64 NEW: GNU ext.
1624 wcscasecmp NEW: GNU ext.
1625 wcsncasecmp NEW: GNU ext.
1626 wcsnlen NEW: GNU ext.
1627 wcstoimax NEW: ISO C 9x
1628 wcstoll NEW: ISO C 9x
1629 wcstoull NEW: ISO C 9x
1630 wcstoumax NEW: ISO C 9x
1632 wordexp NEW: POSIX.2
1633 wordfree NEW: POSIX.2
1634 write_profiling REMOVED
1635 xdecrypt NEW: Secure RPC
1636 xdr_authdes_cred NEW: Secure RPC
1637 xdr_authdes_verf NEW: Secure RPC
1638 xdr_cryptkeyarg NEW: Secure RPC
1639 xdr_cryptkeyarg2 NEW: Secure RPC
1640 xdr_cryptkeyres NEW: Secure RPC
1641 xdr_getcredres NEW: Secure RPC
1642 xdr_key_netstarg NEW: Secure RPC
1643 xdr_key_netstres NEW: Secure RPC
1644 xdr_keybuf NEW: Secure RPC
1645 xdr_keystatus NEW: Secure RPC
1646 xdr_netnamestr NEW: Secure RPC
1647 xdr_sizeof NEW: Secure RPC
1648 xdr_unixcred NEW: sunrpc ext
1649 xencrypt NEW: Secure RPC
1650 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1661 * inet_ntoa is thread-safe
1663 * updwtmp is moved from libutil to libc
1665 * rewrite of cbrt function
1667 * update of timezone data
1681 * add atoll function
1683 * fix complex problems in Berkeley DB code
1685 * fix math functions
1689 * fixed lots of header problems (especially Linux/GNU specific)
1691 * dynamic loader preserves all registers
1693 * Roland McGrath provided support for handling of auxiliary objects in
1694 the ELF dynamic loader.
1696 * support for parallel builds is improved
1700 * GNU extensions are no longer declared by default. To enable them you
1701 must define the macro `_GNU_SOURCE' in your program or compile with
1704 * The library has changed from using GNU ld symbol aliases to using weak
1705 symbols where available. The ELF object file format supports weak
1706 symbols; GNU ld also supports weak symbols in the a.out format. (There
1707 is also now support for other GNU ld extensions in ELF. Use the
1708 `--with-elf' option to configure to indicate you have ELF, and
1709 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1710 of many files which contained only symbol aliases, reducing the size of
1711 the source and the compiled library; many other files were renamed to
1712 less cryptic names previously occupied by the symbol alias files.
1713 There is a new header file <elf.h> for programs which operate on
1714 files in the ELF format.
1716 * Converted to Autoconf version 2, so `configure' has more options.
1717 Run `configure --help' to see the details.
1719 * The library can now be configured to build profiling, highly-optimized
1720 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1721 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1722 `configure' enable building these extra libraries. The shared library is
1723 built by default when using both ELF and GNU ld. When shared libraries
1724 are enabled, the new library `-ldl' is available for arbitrary run-time
1725 loading of shared objects; its interface is defined in <dlfcn.h>. The
1726 new header file <link.h> gives access to the internals of the run-time
1727 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1728 application of same name on other systems and it provides information
1729 about dynamically linked binaries.
1731 * The C library now provides the run-time support code for profiling
1732 executables compiled with `-pg'. Programs can control the profiling code
1733 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1734 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1735 the support for this file format was contributed by David Mosberger-Tang.
1737 * The math code has been replaced with a math library based on fdlibm from
1738 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1739 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1740 functions. The math functions now reside in a separate library, so
1741 programs using them will need to use `-lm' their linking commands.
1743 * John C. Bowman contributed optimized ix87 assembler inline functions.
1745 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1746 mechanism similar to that found in Solaris 2. This is now used for the
1747 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1748 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1749 file controls what services are used for each individual database. This
1750 works by loading shared libraries with names specified in `nsswitch.conf',
1751 so service modules can be changed or added at any time without even
1752 relinking any program. Currently there are the file, db, and NIS based
1753 NSS services available.
1755 * The new functions `strtoq' and `strtouq' parse integer values from
1756 strings, like `strtol' and `strtoul', but they return `long long int' and
1757 `unsigned long long int' values, respectively (64-bit quantities).
1759 * The new functions `strtof' and `strtold' parse floating-point values from
1760 strings, like `strtod', but they return `float' and `long double' values,
1761 respectively (on some machines `double' and `long double' are the same).
1763 * Ulrich Drepper has contributed new implementations of the floating-point
1764 printing and reading code used in the `printf' family of functions and
1765 `strtod', `strtof', and `strtold'. These new functions are perfectly
1766 accurate, and much faster than the old ones.
1768 * The implementation of the POSIX locale model was completely rewritten by
1769 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1770 to compile the POSIX locale definition.
1772 * The former dummy implementations of the strcoll and strxfrm function are
1773 now replaced by fully functional code contributed by Ulrich Drepper. The
1774 collation information comes from the POSIX locale definitions.
1776 * The new header <langinfo.h> defines an interface for accessing
1777 various locale-dependent data (using the locale chosen with `setlocale').
1779 * Ulrich Drepper has contributed a new suite of functions for operation on
1780 wide-character and multibyte-character strings, in <wchar.h>;
1781 and classification and case conversion of wide characters, in <wctype.h>.
1782 These new functions are conforming to the ISO C, Amendement 1 specification.
1784 * There is now a second implementation of the standard I/O library available.
1785 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1786 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1788 * You can now use positional parameter specifications in format strings
1789 for the `printf' and `scanf' families of functions. For example,
1790 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1791 ``Number 6, Mr Jones''. This is mainly useful when providing different
1792 format strings for different languages, whose grammars may dictate
1793 different orderings of the values being printed. To support this
1794 feature, the interface for `register_printf_handler' has changed; see
1795 the header file <printf.h> for details.
1797 * The `printf' and `scanf' families of functions now understand a new
1798 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1799 to group numbers as indicated by the locale; for `scanf' and friends, this
1800 says to accept as valid only a number with all the proper grouping
1801 separators in the right places. In the default "C" locale, numbers are
1802 not grouped; but locales for specific countries will define the usual
1803 conventions (i.e. separate thousands with `,' in the US locale).
1805 * The pgrp functions have been regularized, slightly incompatibly but much
1806 less confusingly. The core functions are now `getpgid' and `setpgid',
1807 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1808 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1809 provided for compatibility. There is no longer an incompatible `getpgrp'
1810 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1812 * The new header file <fts.h> and suite of functions simplify programs that
1813 operate on directory trees. This code comes from 4.4 BSD.
1815 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1816 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1817 NSS scheme used in glibc.
1819 * There is a new malloc debugging hook `__memalign_hook'.
1821 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1822 `unsigned int' in <sys/types.h>. These are for compatibility only and
1823 their use is discouraged.
1825 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1826 done differently, so that it works even without GNU ld.
1828 * New function `euidaccess' checks allowed access to a file like `access',
1829 but using the effective IDs instead of the real IDs.
1831 * The time zone data files have been updated for the latest and greatest
1832 local time conventions of the countries of the world.
1834 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1837 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1838 for formatting floating-point numbers. They are provided only for
1839 compatibility; new programs should use `sprintf' instead. There are
1840 also equivalent function for the `long double' floating-point type and
1841 all functions also exist in a reentrant form.
1843 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1844 functions for maintaining the login-record files (primarily of use to
1845 system programs such as `login'), and convenient functions for
1846 allocating and initializing a pseudo-terminal (pty) device.
1848 * Ulrich Drepper has contributed new support for System V style
1849 shared memory and IPC on systems that support it.
1851 * Ulrich Drepper has contributed several miscellaneous new functions found
1852 in System V: The `hsearch' family of functions provide an effective
1853 implementation of hash tables; `a64l' and `l64a' provide a very simple
1854 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1857 * Ulrich Drepper has contributed new reentrant counterparts for the
1858 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1860 * Ulrich Drepper has contributed new, highly-optimized versions of several
1861 string functions for the i486/Pentium family of processors.
1863 * Ulrich Drepper has updated the Linux-specific code, based largely
1864 on work done in Hongjiu Lu's version of GNU libc for Linux.
1865 The GNU library now supports Linux versions 2.0.10 and later,
1866 using the ELF object file format (i[3456]86-*-linux).
1868 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1870 * David Mosberger-Tang and Richard Henderson have ported the C library
1871 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1872 dynamic linking support for ELF/Alpha.
1874 * Richard Henderson contributed several Alpha optimized assembler function
1875 for arithmetic and string handling.
1877 * Ulrich Drepper has contributed a new set of message catalog functions to
1878 support multiple languages using the <libintl.h> interface, for use with
1879 his new package GNU gettext. Translation volunteers have contributed
1880 catalogs of the library's messages in Spanish, German, and Korean.
1882 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1883 program and the `catgets' function for reading the catalog files it
1884 creates. (The <libintl.h> interface is preferred; we include the
1885 <nl_types.h> interface using `catgets' only for source compatibility with
1886 programs already written to use it.)
1888 * New header file <values.h> gives SVID-compatible names for <limits.h>
1891 * Various new macros, declarations, and small header files for compatibility
1894 * New function `group_member' is a convenient way to check if a process has
1895 a given effective group ID.
1897 * When using GCC 2.7 and later, the socket functions are now declared in a
1898 special way so that passing an argument of type `struct sockaddr_in *',
1899 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1900 `struct sockaddr *' type, does not generate a type-clash warning.
1902 * New function `error' declared in header file <error.h> is a convenient
1903 function for printing error messages and optionally exiting; this is the
1904 canonical function used in GNU programs. The new functions `err', `warn',
1905 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1906 doing the same thing.
1908 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1909 POSIX.2 `glob' function to do ~ and {...} expansion.
1911 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1912 `clearenv' which is used in POSIX.9 is also available.
1914 * New function `getsid' returns session ID number on systems that support it.
1916 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1917 files <db.h> and <mpool.h> provide a rich set of functions for several
1918 types of simple databases stored in memory and in files, and <ndbm.h> is
1919 an old `ndbm'-compatible interface using the `db' functions. Link with
1920 `-ldb' to get these functions.
1922 * New macro `strdupa' copies a string like `strdup', but uses local stack
1923 space from `alloca' instead of dynamic heap space from `malloc'.
1925 * New function `strnlen' is like `strlen' but searches only a given maximum
1926 number of characters for the null terminator. `stpncpy', `strndup' and
1927 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1930 * New function `statfs' in header <sys/statfs.h>.
1932 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1933 provide convenient functions for operating on blocks of null-terminated
1936 * A new suite of functions in <utmp.h> handle all the details of reading
1937 and writing the utmp file.
1939 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1942 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1943 completely POSIX compliant and also implemented the extended functionality
1944 to handle alternate digit representation and alternate era date formats.
1946 * Ulrich Drepper provided an implementation of the `strptime' function
1947 defined in XPG4.2 which transforms a string into a `struct tm' value.
1949 * Paul Eggert provided the tzselect shell script as part of the timezone
1950 code. The shell script makes it easy to select the correct timezone
1953 * The implementation of the malloc family of functions is completely replaced
1954 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1955 The implementation uses the mmap function (if available) and it is
1956 optimized for the use in multi threaded programs.
1958 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1959 functions. This new functionality is usable by specifying a special
1960 salt string and it is compatible with implementation on *BSD systems.
1962 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1963 `getsubopt' to handle second level command line options, `bsd_signal'
1964 to access BSD style `signal' functionality, the obsolete `regexp' style
1967 * the `lchown' function is available on system which support this
1970 * The implementation of the shadow password handling function was contributed
1973 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1975 * POSIX.1g support was added. The <sys/select.h> header is available,
1976 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1977 implementation of `getaddrinfo'.
1981 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1983 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1984 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1986 * The new function `daemon' from 4.4 BSD is useful for server programs that
1987 want to put themselves in the background.
1989 * Joel Sherrill has contributed support for several standalone boards that
1990 run without an operating system.
1992 * `printf', `scanf' and friends now accept a `q' type modifier for long
1993 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1995 * All of the code taken from BSD (notably most of the math and networking
1996 routines) has been updated from the BSD 4.4-Lite release.
1998 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
2000 * The new functions `getdomainname' and `setdomainname' fetch or change the
2001 YP/NIS domain name. These are system calls which exist on systems which
2004 * The time zone data files have been updated for the latest international
2007 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2008 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2012 * The C library now includes support for Sun RPC, from Sun's free
2013 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2014 are included. (There is still no support for YP.)
2016 * Tom Quinn has contributed a port of the C library to SGI machines running
2017 Irix 4 (mips-sgi-irix4).
2019 * The new `lockf' function is a simplified interface to the locking
2020 facilities of `fcntl', included for compatibility.
2022 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2024 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2026 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2029 * The error message printed by `assert' for a failed assertion now includes
2030 the name of the program (if using GNU ld) and the name of the calling
2031 function (with versions of GCC that support this).
2033 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2035 * The library now includes the <sys/mman.h> header file and memory
2036 management functions `mmap', `munmap', `mprotect', `msync', and
2037 `madvise', on systems that support those facilities.
2039 * The interface for `mcheck' has changed slightly: the function called to
2040 abort the program when an allocation inconsistency is detected now takes
2041 an argument that indicates the type of failure. The new function
2042 `mprobe' lets you request a consistency check for a particular block at
2043 any time (checks are normally done only when you call `free' or `realloc'
2046 * It is now possible to easily cross-compile the C library, building on one
2047 system a library to run on another machine and/or operating system. All
2048 you need to do is set the variable `HOST_CC' in `configparms' to the
2049 native compiler for programs to run on the machine you are building on (a
2050 few generator programs are used on Unix systems); set `CC' to the
2053 * The new function `fexecve' (only implemented on the GNU system) executes
2054 a program file given a file descriptor already open on the file.
2058 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2059 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2061 * You can set the variable `libprefix' in `configparms' to specify a prefix
2062 to be prepended to installed library files; this makes it easy to install
2063 the GNU C library to be linked as `-lgnuc' or whatever.
2065 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2066 copies a limited number of characters from a string, and returns the
2067 address of the last character written.
2069 * You no longer need to check for whether the installed `stddef.h' is
2070 compatible with the GNU C library. configure now checks for you.
2072 * You can now define a per-stream `fileno' function to convert the
2073 stream's cookie into an integral file descriptor.
2075 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2076 allocates zero bytes of storage, and returns a unique pointer which
2077 you can pass to `realloc' or `free'. The behavior is undefined if
2078 you dereference this pointer.
2080 * The C library now runs on Sony NEWS m68k machines running either
2081 NewsOS 3 or NewsOS 4.
2083 * The new `syscall' function is a system-dependent primitive function
2084 for invoking system calls. It has the canonical behavior on Unix
2085 systems, including unreliable return values for some calls (such as
2086 `pipe', `fork' and `getppid').
2088 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2089 to `EAGAIN', which is the preferred name. On systems whose kernels
2090 use two distinct codes, the C library now translates EWOULDBLOCK to
2091 EAGAIN in every system call function.
2095 * The GNU C Library Reference Manual is now distributed with the library.
2096 `make dvi' will produce a DVI file of the printed manual.
2097 `make info' will produce Info files that you can read on line using C-h i
2098 in Emacs or the `info' program.
2099 Please send comments on the manual to bug-glibc-manual@gnu.org.
2101 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2103 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2105 * Jason Merrill has contributed a port to the Sequent Symmetry running
2106 Dynix version 3 (i386-sequent-dynix).
2108 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2109 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2111 * New function `memory_warnings' lets you arrange to get warnings when
2112 malloc is running out of memory to allocate, like Emacs gives you.
2114 * The C library now contains the relocating allocator used in Emacs 19 for
2115 its editing buffers. This allocator (ralloc) minimizes allocation
2116 overhead and fragmentation by moving allocated regions around whenever it
2117 needs to. You always refer to a ralloc'd region with a "handle" (a
2118 pointer to a pointer--an object of type `void **').
2120 * There is a new `printf' format: `%m' gives you the string corresponding
2121 to the error code in `errno'.
2123 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2124 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2125 pass, the `a' modifier says to fill in a `char **' you pass with a
2128 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2129 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2130 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2132 * `mkstemp' is a traditional Unix function to atomically create and open a
2133 uniquely-named temporary file.
2137 * The standard location for the file that says what the local timezone is
2138 has changed again. It is now `/usr/local/etc/localtime' (or more
2139 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2141 * The distribution no longer contains any files with names longer than 14
2144 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2145 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2147 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2151 * The configuration process has changed quite a bit. The `configure'
2152 script is now used just like the configuration scripts for other GNU
2153 packages. The `sysdeps' directory hierarchy is much rearranged.
2154 The file `INSTALL' explains the new scheme in detail.
2156 * The header files no longer need to be processed into ANSI C and
2157 traditional C versions. There is just one set of files to install, and
2158 it will work with ANSI or old C compilers (including `gcc -traditional').
2160 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2161 MIPS DECStation running Ultrix 4.
2163 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2164 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2165 made itself into a shared library.
2167 * Yet further improved support for the i386, running 4.3 BSD-like systems
2168 (such as Mach 3 with the Unix single-server), or System V.
2170 * New function `strncasecmp' to do case-insensitive string comparison
2171 with limited length.
2173 * New function `strsep' is a reentrant alternative to `strtok'.
2175 * New functions `scandir' and `alphasort' for searching directories.
2177 * New function `setenv' is a better interface to `putenv'.
2179 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2180 function for traversing a directory tree.
2182 * The GNU obstack package is now also part of the C library.
2183 The new function `open_obstack_stream' creates a stdio stream that
2184 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2185 formatted output directly to an obstack.
2187 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2188 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2190 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2192 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2193 things to your strings.
2195 * There are some new test programs: test-fseek, testmb, and testrand.
2197 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2198 These ports are not finished, but are a good starting place for really
2199 supporting those systems.
2201 * `/etc/localtime' is now the standard location for the file that says what
2202 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2203 This follows the general principle that `/etc' is the place for all local
2204 configuration files.
2206 * The C library header files now use `extern "C"' when used by the C++
2207 compiler, so the C library should now work with C++ code.
2209 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2210 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2213 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2214 function which uses the `merge sort' algorithm, and is said to be
2215 significantly faster than the old GNU `qsort' function. Merge sort is
2216 now the standard `qsort' function. The new algorithm can require a lot
2217 of temporary storage; so, the old sorting function is called when the
2218 required storage is not available.
2220 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2221 provides the Unix `crypt' function, plus some other entry points.
2223 * The code and header files taken from 4.4 BSD have been updated with the
2224 latest files released from Berkeley.
2226 ----------------------------------------------------------------------
2227 Copyright information:
2229 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2231 Permission is granted to anyone to make or distribute verbatim copies
2232 of this document as received, in any medium, provided that the
2233 copyright notice and this permission notice are preserved,
2234 thus giving the recipient permission to redistribute in turn.
2236 Permission is granted to distribute modified versions
2237 of this document, or of portions of it,
2238 under the above conditions, provided also that they
2239 carry prominent notices stating who last changed them.
2242 version-control: never