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 12723, 13550, 13889, 13951, 13988, 14142, 14176, 14200, 14256, 14280,
14 14293, 14317, 14327, 14478, 14496, 14582, 14686, 14812, 14888, 14894,
15 14908, 14920, 14952, 14964, 14981, 14982, 14985, 14991, 14994, 14996,
16 15000, 15003, 15006, 15007, 15014, 15020, 15023, 15036, 15054, 15055,
17 15062, 15078, 15084, 15085, 15086, 15100, 15160, 15214, 15221, 15232,
18 15234, 15283, 15285, 15287, 15304, 15305, 15307, 15309, 15327, 15330,
19 15335, 15336, 15337, 15339, 15342, 15346, 15359, 15361, 15366, 15380,
20 15381, 15394, 15395, 15405, 15406, 15409, 15416, 15418, 15419, 15423,
21 15424, 15426, 15429, 15441, 15442, 15448, 15465, 15480, 15485, 15488,
22 15490, 15493, 15497, 15506, 15529, 15536, 15553, 15577, 15583.
24 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
27 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
28 fixed (Bugzilla #15330).
30 * Add support for calling C++11 thread_local object destructors on thread
31 and program exit. This needs compiler support for offloading C++11
32 destructor calls to glibc.
34 * Improved worst case performance of libm functions with double inputs and
37 * Support for priority inherited mutexes in pthread condition variables on
38 non-x86 architectures.
40 * Added a benchmark framework to track performance of functions in glibc.
42 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
43 It is based on draft TS 18661 and currently enabled as a GNU extension.
47 * The following bugs are resolved with this release:
49 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
50 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
51 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
52 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
53 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
54 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
55 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
56 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
57 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
58 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
59 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
60 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
61 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
62 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
63 14879, 14889, 14893, 14898, 14914.
65 * Optimization of memcpy for MIPS.
67 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
68 EMFILE has been fixed (Bugzilla #14889).
70 * The add-on ports collection is now distributed in the "ports" subdirectory
71 of the main GNU C Library distribution, rather than separately.
73 * Port to ARM AArch64 contributed by Linaro.
75 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
76 Optimized versions of memcpy, memset, and memcmp added for System z10 and
78 Implemented by Andreas Krebbel.
80 * The new function secure_getenv allows secure access to the environment,
81 returning NULL if running in a SUID/SGID process. This function replaces
82 the internal function __secure_getenv.
84 * SystemTap static probes have been added into the dynamic linker.
85 Implemented by Gary Benson.
87 * Optimizations of string functions strstr, strcasestr and memmem.
88 Implemented by Maxim Kuvyrkov.
90 * The minimum Linux kernel version that this version of the GNU C Library
91 can be used with is 2.6.16.
93 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
94 powerpc POWER7. Implemented by Will Schmidt.
96 * New configure option --disable-nscd builds the C library such that it
97 never attempts to contact the Name Service Caching Daemon (nscd).
98 New configure option --disable-build-nscd avoids building nscd itself;
99 this is the default if --disable-nscd is used.
101 * Improved support for cross-compilation, including cross-testing and
102 bootstrap builds without a previously built glibc.
104 * Several testsuite tests are now able to test multiple IFUNC variants of an
105 interface, rather than just testing the one that would be chooen by
108 * New configure options --with-bugurl and --with-pkgversion, for
109 distributors to use to embed their bug-reporting and package version
110 information in --help and --version output.
112 * The ttyname and ttyname_r functions on Linux now fall back to searching for
113 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
114 allows creation of chroots without the procfs mounted on /proc.
116 * The `crypt' function now fails if passed salt bytes that violate the
117 specification for those values. On Linux, the `crypt' function will
118 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
119 enabled, and fail on encrypted strings using the MD5 or DES algorithm
120 when the mode is enabled.
122 * The `clock_*' suite of functions (declared in <time.h>) is now available
123 directly in the main C library. Previously it was necessary to link with
124 -lrt to use these functions. This change has the effect that a
125 single-threaded program that uses a function such as `clock_gettime' (and
126 is not linked with -lrt) will no longer implicitly load the pthreads
127 library at runtime and so will not suffer the overheads associated with
128 multi-thread support in other code such as the C++ runtime library.
130 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
135 * The following bugs are resolved with this release:
137 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
138 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
139 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
140 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
141 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
142 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
143 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
144 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
145 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
146 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
147 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
148 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
149 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
150 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
151 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
152 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
153 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
154 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
155 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
156 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
157 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
158 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
161 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
162 configuring glibc with:
163 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
164 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
165 Implemented by H.J. Lu.
169 + define static_assert
171 + do not declare gets
173 + declare at_quick_exit and quick_exit also for ISO C11
175 + aligned_alloc. NB: The code is deliberately allows the size parameter
176 to not be a multiple of the alignment. This is a moronic requirement
177 in the standard but it is only a requirement on the caller, not the
182 + uchar.h support added
184 + CMPLX, CMPLXF, CMPLXL added
186 Implemented by Ulrich Drepper.
188 * Support for the IA-64 has been moved to ports.
190 * Remove support for anything but ELF binary format
192 * Checking versions of poll, ppoll added.
193 Implemented by Ulrich Drepper.
195 * More generic and 64-bit performance optimizations to math functions.
196 Implemented by Ulrich Drepper.
198 * New configure option --enable-obsolete-rpc makes the deprecated RPC
199 headers and functions available at compile time as they were before
200 version 2.14. This option will be removed at some time in the future
201 after the TI-RPC library becomes fully sufficient for the needs of
202 existing applications.
204 * Compatibility code for Linux kernel versions before 2.4 has been removed.
205 Note that glibc is not expected to work with any Linux kernel version
208 * New header <sys/auxv.h> and function getauxval allowing easy access to
209 the AT_* key-value pairs passed from the Linux kernel. The header also
210 defines the HWCAP_* bits associated with the AT_HWCAP key.
212 * New locales: mag_IN
214 * New configure option --enable-systemtap builds SystemTap static probes
215 into libc for setjmp and longjmp and into libpthread for various operations.
216 So far the setjmp/longjmp probes and some of the libpthread probes are
217 provided only for i*86 and x86_64.
218 Implemented by Roland McGrath and Rayson Ho.
220 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
222 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
225 * More optimized functions for SPARC. Implemented by David S. Miller.
227 * Improved support for cross-compilation, especially bootstrap builds
228 without a previously built glibc.
230 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
231 Chris Metcalf from Tilera.
233 * Support for the old ARM ABI has been removed from ports. Only the EABI is
234 now supported for ARM processors.
236 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
237 as the name of the dynamic linker, to distinguish it from the
238 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
240 * Support for CRIS has been removed from ports.
242 * A new class of installed header has been documented for low-level
243 platform-specific functionality. PowerPC added the first instance with a
244 function to provide time base register access. Contributed by Tulio
245 Magno Quites Machado Filho.
247 * ix86 configurations now install header files that are consistent with
248 what x86-64 configurations install. These same header files can be used
249 for -m32, -m64, or -mx32 builds.
250 Contributed by H.J. Lu.
252 * Math library bug fixes. A thorough audit of all open math library bugs was
253 conducted by Joseph Myers. Significant progress was made on many math
254 library bugs resulting in more accurate exceptions and function results.
255 Many thanks to all those that contributed including Andreas Jaeger for his
256 patch review and work on the x87 trigonometric instruction issues.
258 * Timezone data is no longer installed. Timezone-related binaries and scripts
259 will continue to be installed. Users should obtain their timezone data from
260 their distribution provider or from the tzdata package at
261 <ftp://munnari.oz.au/pub/>.
265 * The following bugs are resolved with this release:
267 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
268 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
269 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
270 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
271 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
272 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
273 13484, 13506, 13515, 13523, 13524, 13538, 13540
275 * New program pldd to list loaded object of a process
276 Implemented by Ulrich Drepper.
278 * Add nss_db support back to glibc. No more dependency on Berkeley db
279 and support for initgroups lookups.
280 Implemented by Ulrich Drepper.
282 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
283 Contributed by HJ Lu.
285 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
286 Contributed by HJ Lu.
288 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
289 on x86-32 and x86-64.
290 Contributed by Liubov Dmitrieva.
292 * Optimized strchr and strrchr for SSE on x86-32.
293 Contributed by Liubov Dmitrieva.
295 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
296 for x86-64 and x86-32.
297 Contributed by Liubov Dmitrieva.
299 * New interfaces: scandirat, scandirat64
300 Implemented by Ulrich Drepper.
302 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
303 Implemented by Ulrich Drepper.
305 * nscd now also caches the netgroup database.
306 Implemented by Ulrich Drepper.
308 * Integrate libm with gcc's -ffinite-math-only option.
309 Implemented by Ulrich Drepper.
311 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
312 to math functions. Implemented by Ulrich Drepper.
314 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
315 Implemented by Ulrich Drepper.
317 * New Linux interfaces: process_vm_readv, process_vm_writev
319 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
320 Implemented by Ulrich Drepper.
322 * Optimized nearbyint and strcasecmp for PPC.
323 Implemented by Adhemerval Zanella.
325 * New locales: bho_IN, unm_US, es_CU, ta_LK
329 * The following bugs are resolved with this release:
331 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
332 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
333 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
334 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
335 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
336 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
337 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
338 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
339 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
340 12795, 12811, 12813, 12814, 12841
342 * The RPC implementation in libc is obsoleted. Old programs keep working
343 but new programs cannot be linked with the routines in libc anymore.
344 Programs in need of RPC functionality must be linked against TI-RPC.
345 The TI-RPC implementation is IPv6 enabled and there are other benefits.
347 Visible changes of this change include (obviously) the inability to link
348 programs using RPC functions without referencing the TI-RPC library and the
349 removal of the RPC headers from the glibc headers.
350 Implemented by Ulrich Drepper.
352 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
353 syncfs, setns, sendmmsg
355 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
356 yue_HK, lij_IT, mhr_RU
358 * New encodings: CP770, CP771, CP772, CP773, CP774
360 * New program sotruss to trace calls through PLTs
361 Implemented by Ulrich Drepper.
363 * The malloc hook implementation is marked deprecated and will be removed
364 from the default implementation in the next version. The design never
365 worked ever since the introduction of threads. Even programs which do
366 not create threads themselves can use multiple threads created internally.
370 * The following bugs are resolved with this release:
372 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
373 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
374 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
375 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
378 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
380 * POWER7 optimizations: memset, memcmp, strncmp
382 * New optimized string functions for x86-64: strnlen (SSE2),
383 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
384 Implemented by Ulrich Drepper.
388 * The following bugs are resolved with this release:
390 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
391 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
392 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
393 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
394 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
395 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
396 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
397 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
399 * New interfaces: pthread_getname_np, pthread_setname_np
401 * New Linux interface: recvmmsg
403 * STT_GNU_IFUNC implemented for Sparc by David Miller.
405 * The dynamic linker now recognizes supported ABI versions from the
406 EI_ABIVERSION field in the ELF header.
407 Implemented by Ulrich Drepper.
409 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
410 will not be used to fill in password fields in the passwd.byname replies.
411 Instead it is used to synthesize the shadow.byname table, should it be
412 missing. This is a useful mode in some installations involving Solaris.
413 Implemented by Ulrich Drepper.
415 * New locales: kok_IN, sq_MK, cv_RU
419 * The following bugs are resolved with this release:
421 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
422 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
423 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
424 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
425 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
426 10789, 10817, 10823, 10840, 10847
428 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
430 Implemented by Ulrich Drepper.
432 * Checking version of longjmp added that fails if an uninitialized stack
433 frame would be created. Implemented by Ulrich Drepper.
435 * STT_GNU_IFUNC is now supported in static executables.
436 Implemented by H.J. Lu.
438 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
440 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
441 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
442 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
443 Contributed by H.J. Lu.
445 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
446 Implemented by Ulrich Drepper.
448 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
450 Contributed by H.J. Lu.
452 * Support for fma instruction in AVX on x86-64.
453 Implemented by H.J. Lu and Ulrich Drepper.
455 * AVX support in x86-64 auditing support in ld.so.
456 Implemented by H.J. Lu.
458 * STB_GNU_UNIQUE support added.
459 Implemented by Ulrich Drepper.
461 * Implement second fallback mode for optimized DNS lookup for even more
462 broken environments. If two requests from the same port are not
463 handled correctly close the socket and open a new one before sending
464 the second request. The 'single-request-reopen' option in /etc/resolv.conf
465 can be used to select this mode right away, instead of rediscovering the
466 necessity is every process again.
467 Implemented by Ulrich Drepper.
469 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
470 Implemented by Adam Tkac.
472 * Optimized iconv conversions for S390x.
473 Implemented by Andreas Krebbel.
475 * Using condvars with PI mutexes is now more efficient due to kernel
476 support for requeueing to PI futexes. NPTL support added for x86-64.
477 Implemented by Ulrich Drepper.
479 * New locales: ps_AF, my_MM
483 * The following bugs are resolved with this release:
485 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
486 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
487 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
488 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
489 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
491 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
492 Implemented by Ulrich Drepper.
494 * New Linux interfaces: accept4, fallocate, fallocate64.
495 Implemented by Ulrich Drepper.
497 * Correct declarations of string function when used in C++ code. This
498 could lead to compile errors for invalid C++ code.
500 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
503 * New POSIX 2008 interface: psiginfo
504 Implemented by Ulrich Drepper.
506 * New ISO C++1x interfaces: quick_exit, at_quick_exit
507 Implemented by Ulrich Drepper.
509 * Support for selecting between multiple function definitions at runtime
510 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
512 * The libcrypt library can now use the hash function implementations in
513 NSS. Implemented by Ulrich Drepper.
515 * The malloc implementation can be compiled to be less memory efficient
516 but higher performing in multi-threaded programs.
517 Implemented by Ulrich Drepper.
519 * New locales: nan_TW@latin, ks_IN
521 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
522 Implemented by Ulrich Drepper.
524 * Extended printf hook support. It is possible to use user-defined types
525 and extend existing format specifiers.
526 Implemented by Ulrich Drepper.
528 * Handling for group shadow files has been added.
529 Implemented by Ulrich Drepper.
531 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
532 servers (the case, e.g., for some people using the built-in DNS
533 server in ADSL modems/routers). There is a once-per-process timeout
534 in case of a broken server. To avoid it, users can run nscd or put
535 'options single-request' in /etc/resolv.conf.
536 Implemented by Ulrich Drepper.
540 * The following bugs are resolved with this release:
542 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
543 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
544 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
545 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
546 6968, 6974, 6980, 6995, 7008, 7009, 7029
548 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
549 up at the same time. Implemented by Ulrich Drepper.
551 * TLS descriptors for LD and GD on x86 and x86-64.
552 Implemented by Alexandre Oliva.
554 * getaddrinfo now handles DCCP and UDPlite.
555 Implemented by Ulrich Drepper.
557 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
558 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
559 Implemented by Ulrich Drepper.
561 * New implementation of memmem, strstr, and strcasestr which is O(n).
562 Implemented by Eric Blake.
564 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
566 * Implement "e" option for popen to open file descriptor with the
567 close-on-exec flag set. Implemented by Ulrich Drepper.
569 * Implement "b" mode for fmemopen. In this mode writes writes don't
570 implicitly add a NUL byte and seeks from the end of the buffer really
571 use the buffer end, not the string length as the basis.
572 Implemented by Ulrich Drepper.
574 * Many functions, exported and internal, now atomically set the close-on-exec
575 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
577 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
579 Implemented by Pravin Satpute.
581 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
585 * The following bugs are resolved with this release:
587 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
588 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
589 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
590 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
591 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
592 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
593 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
595 * New locales: bo_CN, bo_IN, shs_CA.
597 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
599 * Sorting rules for some Indian languages (Devanagari and Gujarati).
600 Implemented by Pravin Satpute.
602 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
604 * nscd caches now all timeouts for DNS entries
605 Implemented by Ulrich Drepper.
607 * nscd is more efficient and wakes up less often.
608 Implemented by Ulrich Drepper.
610 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
611 vdprintf, and obstack_vprintf.
612 Implemented by Jakub Jelinek.
614 * Faster memset for x86-64.
615 Implemented by Harsha Jagasia and H.J. Lu.
617 * Faster memcpy on x86.
618 Implemented by Ulrich Drepper.
620 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
621 Implemented by Ulrich Drepper.
623 * Faster sqrt and sqrtf implemention for some PPC variants.
624 Implemented by Steven Munroe.
628 * The following bugs are resolved with this release:
630 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
631 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
632 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
633 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
634 5071, 5103, 5104, 5112, 5113, 5184, 5186
636 * More checking functions: fread, fread_unlocked, open*, mq_open.
637 Implemented by Jakub Jelinek and Ulrich Drepper.
639 * Extend fortification to C++. Implemented by Jakub Jelinek.
641 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
642 by not recognizing 'a' as a modifier when those specs are requested.
643 Implemented by Jakub Jelinek.
645 * PPC optimizations to math and string functions.
646 Implemented by Steven Munroe.
648 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
649 options to be passed. Implemented by Ulrich Drepper.
651 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
653 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
654 Implemented by Ulrich Drepper.
656 * Handle private futexes in the NPTL implementation.
657 Implemented by Jakub Jelinek and Ulrich Drepper.
659 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
660 Implemented by Roland McGrath and Ulrich Drepper.
662 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
664 * SHA-256 and SHA-512 based password encryption.
665 Implemented by Ulrich Drepper.
667 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
668 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
671 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
672 Implemented by Ulrich Drepper.
676 * The following bugs are resolved with this release:
678 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
679 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
680 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
681 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
682 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
683 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
684 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
687 * New Linux interfaces: epoll_pwait, sched_getcpu.
689 * New generic interfaces: strerror_l.
691 * nscd can now cache the services database. Implemented by Ulrich Drepper.
695 * The following bugs are resolved with this release:
697 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
698 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
699 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
700 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
701 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
702 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
703 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
704 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
705 3225, 3251, 3252, 3253, 3273
707 * For Linux, the sorting of addresses returned by getaddrinfo now also
708 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
709 Implemented by Ulrich Drepper.
711 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
712 Implemented by Ulrich Drepper.
714 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
716 * New iconv module for MIK. Contributed by Alexander Shopov.
718 * For sites with broken group and/or passwd database, the auto-propagate
719 option of nscd can prevent creating ID lookup entries from the results
720 of a name lookup and vice versa. This usually is no problem but some
721 site might have problems with the default behavior.
722 Implemented by Ulrich Drepper.
724 * Iterating over entire database in NIS can be slow. With the
725 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
726 to trade time for memory. The entire database will be read at once.
727 Implemented by Ulrich Drepper.
729 * The interfaces introduced in RFC 3542 have been implemented by
732 * Support for the new ELF hash table format was added by Ulrich Drepper.
734 * Support for priority inheritance mutexes added by Jakub Jelinek and
737 * Support for priority protected mutexes added by Jakub Jelinek.
739 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
740 or_IN, csb_PL, fy_NL, sr_ME.
744 * More overflow detection functions.
746 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
747 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
749 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
750 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
751 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
752 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
753 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
754 by Masahide Washizawa.
756 * It is now possible to install audit libraries for the dynamic linker using
757 LD_AUDIT. Implemented by Ulrich Drepper.
759 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
760 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
761 For a libc and libpthread that works well on Linux 2.4 kernels, we
762 recommend using the stable 2.3 branch.
764 * The new function open_wmemstream acts like open_memstream,
765 but uses a wchar_t wide character buffer.
767 * The new function ppoll is an improved version of poll, similar to pselect.
769 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
770 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
771 renameat, unlinkat, linkat, symlinkat, readlinkat.
773 * New Linux kernel system calls: unshare,
774 inotify_init, inotify_add_watch, inotify_rm_watch.
776 * The euidaccess function is now also known by the alias eaccess,
777 for compatibility with some other systems.
779 * Timezone data updated to 2006b version.
783 * The following bugs are resolved with this release:
785 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
786 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
787 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
788 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
789 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
790 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
792 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
794 * As of this release, GCC 4 can be used to compile the C Library.
796 * Timezone data updated to 2005m version.
800 * The following bugs are resolved with this release:
802 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
803 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
804 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
805 777, 787, 821, 822, 823, 825
807 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
811 * Support for RFC 3678. Real implementations exist only for Linux so far.
812 Implemented by Ulrich Drepper.
814 * nscd can now cache entries persistently. Expiring entries are reloaded.
815 For speedups the cache can be shared in memory with client processes.
816 Implemented by Ulrich Drepper.
818 * nscd can now perform SELinux checks.
819 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
821 * getaddrinfo queries are now cached. Canonical name lookup is performed
823 Implemented by Ulrich Drepper.
825 * The nothrow function attribute is used when headers are used by gcc when
826 compiling C code. This can avoid significant amounts of exception
829 * The malloc functions perform more error checking and are stricter when
830 it comes to reacting on errors. The default action is to terminate
831 the process after showing an error message. Implemented by Ulrich Drepper.
833 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
834 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
836 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
837 namespaces using the new function dlmopen(). This feature is of course,
838 like most other dynamic loading functionality, not available in statically
839 linked applications. Implemented by Ulrich Drepper.
841 * Low-overhead boundary checking variants of string and some stdio functions
842 were added. These are to be used in conjunction with a gcc patch by
843 Jakub Jelinek which adds calls to these functions if possible.
844 Implemented by Jakub Jelinek and Ulrich Drepper.
846 * Old code for several operating systems and machine architectures that
847 have not been in working condition in a long time have been removed from
848 the main source tree maintained by the GNU C Library's maintainers.
849 These files are now reside in the separate `ports' source module
850 that is usable as an add-on when building the library.
854 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
855 interrogate the dynamic linker, compatible with the Solaris interface.
857 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
858 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
860 * getifaddrs now uses the netlink interface on Linux to get its information.
861 Implemented by Thorsten Kukuk.
863 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
864 Implemented by Ulrich Drepper.
866 * support for non-executable stacks on x86 has been added. Changes mostly
869 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
872 * getaddrinfo now performs destination address selection according to
877 * Thread-safe interfaces for many functions that access locale data
878 were added in version 2.3, but these features were omitted from NEWS.
879 Many functions have variants with an `_l' suffix that take a `locale_t'
880 object as a parameter rather than consulting the current locale.
881 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
882 create and maintain `locale_t' objects. Additionally, the new function
883 `uselocale' sets "the current locale" (as used by functions not so
884 parameterized) set for an individual thread. These features were added
885 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
887 * The functions getresuid, getresgid, setresuid, and setresgid, which
888 have long been available on Linux, are now declared in <unistd.h>
889 and are now also available on the Hurd.
891 * ELF thread-local storage support (TLS) now works on x86-64.
893 * The new dynamic string token $LIB is expanded in shared library names.
894 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
896 * Aldy Hernandez contributed complete software floating point support for
897 PowerPC machines with no FPU.
899 * fexecve is implemented on Linux.
901 * The `btowc' function should work at least twice as fast due to
902 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
904 * With approriate thread add-ons cancelable functions are now implemented
905 in libc.so as well. No need to call the function in libpthread. This
906 change allowed to finally disable the incorrect and expensive handling
907 of weak definition in ld.so.
909 * Yet more PLT entries in libc.so have been removed. We finally arrived
910 at the bare minimum. Startup times improved appropriately.
912 * Support for the new Linux/x86 system call interface was added. The
913 AT_SYSINFO auxiliary vector entry is recognized and handled.
917 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
920 * iconv (the program and the interface) now accepts empty names (excluding
921 options like //TRANSLIT) to mean "use charset of current locale".
923 * localedef can now transliterate characters in strings which are not in
924 the provided charmap. The information from the input locale is used.
926 * Prelinking support was added for ELF targets. This requires additional
927 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
929 * Read-only stdio streams now use mmap to speed up operation by eliminating
930 copying and buffer underflows. To use add 'm' to the mode string of
931 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
933 * The malloc functions were completely rewritten by Wolfram Gloger based
934 on Doug Lea's malloc-2.7.0.c.
936 * Isamu Hasegawa contributed a completely new and POSIX-conformant
937 implementation of regex.
939 * Bruno Haible upgraded the iconv and locale implementation to support
942 * Contents of the LC_* and LANG environment variables in the CEN style are
943 not recognized anymore. It never was used. Change by Ulrich Drepper.
945 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
946 thread-local storage (TLS) ABI on some platforms.
947 Changes by Ulrich Drepper. SH support by Kaz Kojima.
949 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
950 EUC-JISX0213, and TSCII.
952 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
953 BSD-compatible interface for getting all network interface addresses.
954 Implementation for IPv4 by Roland McGrath.
956 * Loading of locale data is faster due to the introduction of a locale
957 archive. Implemented by Roland McGrath and Ulrich Drepper.
959 * Startup times are significantly reduced by not using exported functions
960 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
963 * Steven Munroe contributed a port to PowerPC64/Linux.
967 * The Hurd now uses the GNU libio implementation of stdio rather than the
968 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
970 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
971 with the same behavior as the Linux system call of the same name.
975 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
976 128-bit long double format.
978 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
979 IBM1161, and IBM1162 charsets.
981 * Andreas Jaeger contributed a port to x86-64/Linux.
983 * Peter Bruin contributed a port to PowerPC/Hurd.
985 * libc functions using I/O streams now can handle wide-oriented streams
988 * optimizations in the dynamic linker. Binaries created by recent binutils
989 versions start up quicker due to reduced time spent on relocations.
991 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
995 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
996 asinh, atanh, j0 for the 128-bit long double format.
998 * Bruno Haible updated all the code handling Unicode in some form to
1001 * Speed of regex for single-byte locales is back to previous levels.
1002 Patch by Isamu Hasegawa.
1004 * Alpha, SPARC, and IA-64 now also using floating stacks.
1006 * Startup time of internationalized applications greatly improved through
1007 iconv cache. Use iconvconfig to generate the cache file.
1008 Contributed by Ulrich Drepper.
1010 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1011 severe performance problems. Patch by David Mosberger.
1013 * The Hurd port got a lot more functionality like AIO, various stdio
1014 extensions, etc. Mainly done by Roland McGrath.
1016 * mtrace can now lookup symbols in shared libraries.
1020 * Intel's IA-64 math library is largely integrated. It provides fast and
1021 accurate implementatations for most basic and standard math functions
1022 in float, double, and long double format.
1024 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1025 and asin for the 96-bit long double format and asin, log, tan for the
1026 128-bit long double format.
1028 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1029 The basic double functions exist today. Contributed by Abraham Ziv
1030 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1031 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1033 * An asynchronous name lookup library was added. The interface is designed
1034 after POSIX AIO. The proposal was circulated beforehand to get comments.
1035 No negative ones came in. Implemented by Ulrich Drepper.
1037 * Port to S390/64bit contributed by Martin Schwidefsky
1038 <schwidefsky@de.ibm.com>.
1040 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1041 of functions for Linux/IA-64.
1043 * The RPC code is now thread safe. Threads can now use the same service
1044 of different services at the same time. Patch by Eric Norum
1045 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1047 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1048 family of functions for Linux/S390.
1050 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1051 of functions for Linux/x86.
1053 * Port to Linux/CRIS contributed by Axis Communications.
1057 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1058 we can now check for namespace violations and missing declarations. The
1059 result is that almost all headers are now Unix-compliant (as defined in
1060 the upcoming XPG6). The negative side is that some programs might need
1061 corrections, too, if they depend on the incorrect form of the headers in
1062 previous versions which defined too many symbols and included too many
1065 * regex now handles multibyte character sets correctly.
1066 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1068 * iconv (the program) does now conform to the upcoming XPG6 and handles
1069 charmaps. Instead of the charset names the path of charmaps can be
1070 provided and the conversion happens based on this data.
1071 Contributed by Ulrich Drepper.
1073 * The locale program now provides detailed information about the installed
1078 only lists the names of the supported locales
1082 provides details such as country, language, and codeset name.
1083 Contributed by Ulrich Drepper.
1087 * The gencat program now parses the input file according to the charset
1088 selected by the LC_CTYPE category. This is important for stateful
1089 character sets. To make generating catalogs easier there is a way
1090 to overwrite the charset selected by the locale: before the first
1091 message or $ quote line the catalog can contain a line like
1093 $ codeset=ISO-8859-2
1095 to select the charset (ISO-8859-2 in this case).
1097 Implemented by Shinya Hanataka and Ulrich Drepper.
1099 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1100 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1101 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1103 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1104 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1106 * The LANGUAGE environment variable is now ignored unless the locale is
1107 changed from the default "C" locale.
1109 * The usual bug fixes.
1113 * Greg McGary added runtime support for bounds checking using gcc's
1114 new -fbounded-pointers option. ix86 target is complete. PowerPC
1117 * Thorsten Kukuk added secure mode support to nscd.
1119 * The Berkeley db libraries have been removed.
1121 Related, the nss_db module is now in a separate package since it
1122 obviously requires a database library being available.
1124 * Wide character I/O streams implemented by Ulrich Drepper.
1126 * Functions from the extended socket API added by Ulrich Drepper.
1128 * Functions feenableexcept and fedisableexcept to control the
1129 behaviour of individual exceptions have been added by Andreas Jaeger.
1131 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1133 * The resolver code has been updated from bind 8.2.3-T5B which supports
1134 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1137 This change could in some situations effect backward compatibility. Since
1138 now `_res' is a thread-local instead of a global variable, modifying it
1139 in one thread does not have any effect in other threads.
1141 The resolver library was also extended to allow IPv6 as the transport
1142 protocol for the requests. This work was done by Stig Venaas.
1144 * Compatibility code for K&R C compilers has been removed from the
1145 header files. A ISO C compiler is needed to use the library
1146 (conforming to either C89 or C99 standard).
1148 * Complete rewrite of the localedef program to support multibyte character
1149 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1150 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1151 Implemented by Ulrich Drepper.
1153 Bruno Haible significantly improved the generation and use of the data
1154 structures for the wide character tables.
1156 * Plural handling in gettext implemented by Ulrich Drepper.
1158 * The utmp daemon has been removed.
1160 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1162 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1165 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1167 * POSIX barriers implemented by Kaz Kylheku.
1169 * POSIX spawn function family implemented by Ulrich Drepper.
1171 * POSIX spinlocks are now available.
1173 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1175 * the configure option --enable-kernel=X.Y.Z allows to strip out
1176 compatibility for kernel versions before X.Y.Z. This is currently only
1177 implemented for Linux.
1179 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1180 field sin6_scope_id. This means that all programs using IPv6 should be
1181 recompiled. Don't expect binary compatibility with previous glibc
1184 * various conversion modules for IBM character sets contributed by
1187 * IA-64 port by Jes Sorensen and HJ Lu.
1201 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1203 * New xdr functions are added; some rpc functions are now 64bit clean.
1205 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1207 * Fixed known incompatibilities with glibc 2.0.
1209 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1211 * Optimized a number of functions (especially the ELF dynamic loader).
1213 * Update timezone data files.
1215 * lots of charmaps corrections
1217 * some new locale definitions and charmaps
1222 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1223 conform to POSIX member type requirements. Symbol versions have been
1224 adjusted as needed within the library, and for direct use by applications,
1225 but there is potential for problems if third-party libraries use
1226 struct timeval as part of their interface. This does not present
1227 a problem for X and other "essential" system libraries.
1229 * An additional locale model to support C++ Standard Library locale
1230 model and probably more was implemented by Ulrich Drepper.
1232 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1235 * Miles Bader provided the `argp' function family to support hierachical
1236 command line argument parsing, layered on top of getopt.
1238 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1240 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1243 * scanf recognizes the %a and %A format for scanning floating point numbers.
1245 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1246 information and interfaces for the available integer types.
1248 * about 130 new math functions were added to implement the ISO C9x math
1251 * the new header <complex.h> contains definitions of the complex math
1252 functions from ISO C 9X.
1254 * the new header <tgmath.h> defines generic macros to use complex or
1255 real valued functions.
1257 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1259 * Andreas Jaeger provided a test suite for the math library.
1261 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1263 * Ulrich Drepper added character set conversion functions (iconv).
1265 * Optimized string functions have been added.
1267 * The localedata addon is now part of glibc.
1269 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1271 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1272 daemon for NSS (nscd).
1274 Missing a better place here are some numbers on improvements. Under
1275 Linux 2.1.125 un-tar-ing the kernel sources takes
1279 using local files 12.19s 6.88s 22.91s
1281 using NIS 13.92s 8.91s 26.34s
1283 using NIS & nscd 10.37s 7.34s 25.30s
1285 using NIS+ 27.57s 30.37s 640.46s
1287 using NIS+ & nscd 10.25s 7.83s 26.51s
1289 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1291 Keep in mind that non-namelookup related operations dominate above times.
1292 It was just a common complain that using NIS+ unpacking the kernel is
1295 [1] The old nscd implementation is not available anymore since it was
1296 distributed with glibc up to version 2.0.98 and thus is now replaced.
1298 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1300 * Mark Kettenis provided a Hesiod NSS module.
1302 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1303 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1305 * rcmd can now handle netgroups (Dick Streefland).
1307 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1310 * Support for the IPv6 protocol has been added to the socket API, as per the
1311 latest draft standards.
1313 * Support for Linux 2.2 has been added.
1315 * Interface changes relative to the latest 2.0.x release:
1316 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1317 addseverity NEW: Unix98
1318 alphasort64 NEW: LFS
1319 argp_err_exit_status NEW: argp, GNU ext
1320 argp_error NEW: argp, GNU ext
1321 argp_failure NEW: argp, GNU ext
1322 argp_help NEW: argp, GNU ext
1323 argp_parse NEW: argp, GNU ext
1324 argp_program_bug_address NEW: argp, GNU ext
1325 argp_program_version NEW: argp, GNU ext
1326 argp_program_version_hook NEW: argp, GNU ext
1327 argp_state_help NEW: argp, GNU ext
1328 argp_usage NEW: argp, GNU ext
1329 authdes_create NEW: Secure RPC
1330 authdes_getucred NEW: Secure RPC
1331 authdes_pk_create NEW: Secure RPC
1332 backtrace NEW: GNU ext.
1333 backtrace_symbols NEW: GNU ext.
1334 backtrace_symbols_fd NEW: GNU ext.
1336 cacosf NEW: ISO C 9x
1337 cacosh NEW: ISO C 9x
1338 cacoshf NEW: ISO C 9x
1339 cacoshl NEW: ISO C 9x
1340 cacosl NEW: ISO C 9x
1347 casinf NEW: ISO C 9x
1348 casinh NEW: ISO C 9x
1349 casinhf NEW: ISO C 9x
1350 casinhl NEW: ISO C 9x
1351 casinl NEW: ISO C 9x
1353 catanf NEW: ISO C 9x
1354 catanh NEW: ISO C 9x
1355 catanhf NEW: ISO C 9x
1356 catanhl NEW: ISO C 9x
1357 catanl NEW: ISO C 9x
1358 cbc_crypt NEW: Secure RPC
1362 ccoshf NEW: ISO C 9x
1363 ccoshl NEW: ISO C 9x
1369 cimagf NEW: ISO C 9x
1370 cimagl NEW: ISO C 9x
1371 clearerr_locked REMOVED
1372 clntunix_create NEW: sunrpc ext
1374 clog10 NEW: ISO C 9x
1375 clog10f NEW: ISO C 9x
1376 clog10l NEW: ISO C 9x
1386 cprojf NEW: ISO C 9x
1387 cprojl NEW: ISO C 9x
1389 crealf NEW: ISO C 9x
1390 creall NEW: ISO C 9x
1395 csinhf NEW: ISO C 9x
1396 csinhl NEW: ISO C 9x
1399 csqrtf NEW: ISO C 9x
1400 csqrtl NEW: ISO C 9x
1404 ctanhf NEW: ISO C 9x
1405 ctanhl NEW: ISO C 9x
1407 des_setparity NEW: Secure RPC
1408 ecb_crypt NEW: Secure RPC
1409 endutxent NEW: Unix98
1411 exp10f NEW: ISO C 9x
1412 exp10l NEW: ISO C 9x
1416 fattach NEW: STREAMS
1417 fdetach NEW: STREAMS
1421 feclearexcept NEW: ISO C 9x
1422 fegetenv NEW: ISO C 9x
1423 fegetexceptflag NEW: ISO C 9x
1424 fegetround NEW: ISO C 9x
1425 feholdexcept NEW: ISO C 9x
1427 feraiseexcept NEW: ISO C 9x
1428 ferror_locked REMOVED
1429 fesetenv NEW: ISO C 9x
1430 fesetexceptflag NEW: ISO C 9x
1431 fesetround NEW: ISO C 9x
1432 fetestexcept NEW: ISO C 9x
1433 feupdateenv NEW: ISO C 9x
1434 fflush_locked REMOVED
1438 fgets_unlocked NEW: GNU ext.
1439 fileno_locked REMOVED
1451 fputc_locked REMOVED
1452 fputs_unlocked NEW: GNU ext.
1453 fread_unlocked NEW: GNU ext.
1458 fstatvfs NEW: Unix98
1462 ftruncate64 NEW: LFS
1464 fwrite_unlocked NEW: GNU ext.
1465 gai_strerror NEW: IPv6
1469 getchar_locked REMOVED
1471 getdate_err NEW: Unix98
1472 getdate_r NEW: GNU ext.
1474 getnameinfo NEW: IPv6
1475 getnetname NEW: Secure RPC
1476 getpmsg NEW: STREAMS
1477 getpt NEW: Unix98 PTY
1478 getrlimit64 NEW: LFS
1479 getutxent NEW: Unix98
1480 getutxid NEW: Unix98
1481 getutxline NEW: Unix98
1482 glob64 NEW: GNU ext.
1483 globfree64 NEW: GNU ext.
1484 gnu_get_libc_release NEW: GNU ext.
1485 gnu_get_libc_version NEW: GNU ext.
1486 grantpt NEW: Unix98 PTY
1487 host2netname NEW: Secure RPC
1489 iconv_close NEW: iconv
1490 iconv_open NEW: iconv
1491 if_freenameindex NEW: IPv6
1492 if_indextoname NEW: IPv6
1493 if_nameindex NEW: IPv6
1494 if_nametoindex NEW: IPv6
1495 in6addr_any NEW: IPv6
1496 in6addr_loopback NEW: IPv6
1497 inet6_isipv4mapped NEW: IPv6
1498 isastream NEW: STREAMS
1499 iswblank NEW: GNU ext.
1500 key_decryptsession NEW: Secure RPC
1501 key_decryptsession_pk NEW: Secure RPC
1502 key_encryptsession NEW: Secure RPC
1503 key_encryptsession_pk NEW: Secure RPC
1504 key_gendes NEW: Secure RPC
1505 key_get_conv NEW: Secure RPC
1506 key_secretkey_is_set NEW: Secure RPC
1507 key_setnet NEW: Secure RPC
1508 key_setsecret NEW: Secure RPC
1509 llrint NEW: ISO C 9x
1510 llrintf NEW: ISO C 9x
1511 llrintl NEW: ISO C 9x
1512 llround NEW: ISO C 9x
1513 llroundf NEW: ISO C 9x
1514 llroundl NEW: ISO C 9x
1519 lrintf NEW: ISO C 9x
1520 lrintl NEW: ISO C 9x
1521 lround NEW: ISO C 9x
1522 lroundf NEW: ISO C 9x
1523 lroundl NEW: ISO C 9x
1525 makecontext NEW: Unix98
1526 mempcpy NEW: GNU ext.
1529 modify_ldt NEW: kernel
1533 nearbyint NEW: ISO C 9x
1534 nearbyintf NEW: ISO C 9x
1535 nearbyintl NEW: ISO C 9x
1536 netname2host NEW: Secure RPC
1537 netname2user NEW: Secure RPC
1538 nexttoward NEW: ISO C 9x
1539 nexttowardf NEW: ISO C 9x
1540 nexttowardl NEW: ISO C 9x
1544 passwd2des NEW: Secure RPC
1546 pow10f NEW: GNU ext.
1547 pow10l NEW: GNU ext.
1550 printf_size NEW: GNU ext.
1551 printf_size_info NEW: GNU ext.
1552 profil_counter REMOVED
1553 pthread_mutexattr_getkind_np REPLACED
1554 pthread_mutexattr_setkind_np REPLACED
1555 ptsname NEW: Unix98 PTY
1556 ptsname_r NEW: Unix98 PTY
1558 putchar_locked REMOVED
1559 putgrent NEW: GNU ext.
1561 putpmsg NEW: STREAMS
1562 pututxline NEW: Unix98
1566 readdir64_r NEW: LFS
1567 remquo NEW: ISO C 9x
1568 remquof NEW: ISO C 9x
1569 remquol NEW: ISO C 9x
1571 roundf NEW: ISO C 9x
1572 roundl NEW: ISO C 9x
1574 scalbln NEW: ISO C 9x
1575 scalblnf NEW: ISO C 9x
1576 scalblnl NEW: ISO C 9x
1578 sendfile NEW: kernel
1579 setcontext NEW: Unix98
1580 setrlimit64 NEW: LFS
1581 setutxent NEW: Unix98
1583 sigignore NEW: Unix98
1584 sigqueue NEW: POSIX.1b
1585 sigrelse NEW: Unix98
1586 sigset NEW: POSIX.1b
1587 sigtimedwait NEW: POSIX.1b
1588 sigwaitinfo NEW: POSIX.1b
1589 sincos NEW: GNU ext.
1590 sincosf NEW: GNU ext.
1591 sincosl NEW: GNU ext.
1595 strcasestr NEW: GNU ext.
1596 strtoimax NEW: ISO C 9x
1597 strtoumax NEW: ISO C 9x
1598 strverscmp NEW: GNU ext.
1599 svcauthdes_stats NEW: Secure RPC
1600 svcunix_create NEW: sunrpc etx
1601 svcunixfd_create NEW: sunrpc ext
1602 swapcontext NEW: Unix98
1603 tcgetsid NEW: Unix98 PTY
1604 tdestroy NEW: GNU ext.
1605 tgamma NEW: ISO C 9x
1606 tgammaf NEW: ISO C 9x
1607 tgammal NEW: ISO C 9x
1611 truncf NEW: ISO C 9x
1612 truncl NEW: ISO C 9x
1614 unlockpt NEW: Unix98 PTY
1615 updwtmpx NEW: Unix98
1616 user2netname NEW: Secure RPC
1617 utmpxname NEW: Unix98
1618 versionsort NEW: GNU ext.
1619 versionsort64 NEW: GNU ext.
1621 wcscasecmp NEW: GNU ext.
1622 wcsncasecmp NEW: GNU ext.
1623 wcsnlen NEW: GNU ext.
1624 wcstoimax NEW: ISO C 9x
1625 wcstoll NEW: ISO C 9x
1626 wcstoull NEW: ISO C 9x
1627 wcstoumax NEW: ISO C 9x
1629 wordexp NEW: POSIX.2
1630 wordfree NEW: POSIX.2
1631 write_profiling REMOVED
1632 xdecrypt NEW: Secure RPC
1633 xdr_authdes_cred NEW: Secure RPC
1634 xdr_authdes_verf NEW: Secure RPC
1635 xdr_cryptkeyarg NEW: Secure RPC
1636 xdr_cryptkeyarg2 NEW: Secure RPC
1637 xdr_cryptkeyres NEW: Secure RPC
1638 xdr_getcredres NEW: Secure RPC
1639 xdr_key_netstarg NEW: Secure RPC
1640 xdr_key_netstres NEW: Secure RPC
1641 xdr_keybuf NEW: Secure RPC
1642 xdr_keystatus NEW: Secure RPC
1643 xdr_netnamestr NEW: Secure RPC
1644 xdr_sizeof NEW: Secure RPC
1645 xdr_unixcred NEW: sunrpc ext
1646 xencrypt NEW: Secure RPC
1647 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1658 * inet_ntoa is thread-safe
1660 * updwtmp is moved from libutil to libc
1662 * rewrite of cbrt function
1664 * update of timezone data
1678 * add atoll function
1680 * fix complex problems in Berkeley DB code
1682 * fix math functions
1686 * fixed lots of header problems (especially Linux/GNU specific)
1688 * dynamic loader preserves all registers
1690 * Roland McGrath provided support for handling of auxiliary objects in
1691 the ELF dynamic loader.
1693 * support for parallel builds is improved
1697 * GNU extensions are no longer declared by default. To enable them you
1698 must define the macro `_GNU_SOURCE' in your program or compile with
1701 * The library has changed from using GNU ld symbol aliases to using weak
1702 symbols where available. The ELF object file format supports weak
1703 symbols; GNU ld also supports weak symbols in the a.out format. (There
1704 is also now support for other GNU ld extensions in ELF. Use the
1705 `--with-elf' option to configure to indicate you have ELF, and
1706 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1707 of many files which contained only symbol aliases, reducing the size of
1708 the source and the compiled library; many other files were renamed to
1709 less cryptic names previously occupied by the symbol alias files.
1710 There is a new header file <elf.h> for programs which operate on
1711 files in the ELF format.
1713 * Converted to Autoconf version 2, so `configure' has more options.
1714 Run `configure --help' to see the details.
1716 * The library can now be configured to build profiling, highly-optimized
1717 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1718 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1719 `configure' enable building these extra libraries. The shared library is
1720 built by default when using both ELF and GNU ld. When shared libraries
1721 are enabled, the new library `-ldl' is available for arbitrary run-time
1722 loading of shared objects; its interface is defined in <dlfcn.h>. The
1723 new header file <link.h> gives access to the internals of the run-time
1724 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1725 application of same name on other systems and it provides information
1726 about dynamically linked binaries.
1728 * The C library now provides the run-time support code for profiling
1729 executables compiled with `-pg'. Programs can control the profiling code
1730 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1731 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1732 the support for this file format was contributed by David Mosberger-Tang.
1734 * The math code has been replaced with a math library based on fdlibm from
1735 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1736 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1737 functions. The math functions now reside in a separate library, so
1738 programs using them will need to use `-lm' their linking commands.
1740 * John C. Bowman contributed optimized ix87 assembler inline functions.
1742 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1743 mechanism similar to that found in Solaris 2. This is now used for the
1744 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1745 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1746 file controls what services are used for each individual database. This
1747 works by loading shared libraries with names specified in `nsswitch.conf',
1748 so service modules can be changed or added at any time without even
1749 relinking any program. Currently there are the file, db, and NIS based
1750 NSS services available.
1752 * The new functions `strtoq' and `strtouq' parse integer values from
1753 strings, like `strtol' and `strtoul', but they return `long long int' and
1754 `unsigned long long int' values, respectively (64-bit quantities).
1756 * The new functions `strtof' and `strtold' parse floating-point values from
1757 strings, like `strtod', but they return `float' and `long double' values,
1758 respectively (on some machines `double' and `long double' are the same).
1760 * Ulrich Drepper has contributed new implementations of the floating-point
1761 printing and reading code used in the `printf' family of functions and
1762 `strtod', `strtof', and `strtold'. These new functions are perfectly
1763 accurate, and much faster than the old ones.
1765 * The implementation of the POSIX locale model was completely rewritten by
1766 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1767 to compile the POSIX locale definition.
1769 * The former dummy implementations of the strcoll and strxfrm function are
1770 now replaced by fully functional code contributed by Ulrich Drepper. The
1771 collation information comes from the POSIX locale definitions.
1773 * The new header <langinfo.h> defines an interface for accessing
1774 various locale-dependent data (using the locale chosen with `setlocale').
1776 * Ulrich Drepper has contributed a new suite of functions for operation on
1777 wide-character and multibyte-character strings, in <wchar.h>;
1778 and classification and case conversion of wide characters, in <wctype.h>.
1779 These new functions are conforming to the ISO C, Amendement 1 specification.
1781 * There is now a second implementation of the standard I/O library available.
1782 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1783 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1785 * You can now use positional parameter specifications in format strings
1786 for the `printf' and `scanf' families of functions. For example,
1787 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1788 ``Number 6, Mr Jones''. This is mainly useful when providing different
1789 format strings for different languages, whose grammars may dictate
1790 different orderings of the values being printed. To support this
1791 feature, the interface for `register_printf_handler' has changed; see
1792 the header file <printf.h> for details.
1794 * The `printf' and `scanf' families of functions now understand a new
1795 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1796 to group numbers as indicated by the locale; for `scanf' and friends, this
1797 says to accept as valid only a number with all the proper grouping
1798 separators in the right places. In the default "C" locale, numbers are
1799 not grouped; but locales for specific countries will define the usual
1800 conventions (i.e. separate thousands with `,' in the US locale).
1802 * The pgrp functions have been regularized, slightly incompatibly but much
1803 less confusingly. The core functions are now `getpgid' and `setpgid',
1804 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1805 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1806 provided for compatibility. There is no longer an incompatible `getpgrp'
1807 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1809 * The new header file <fts.h> and suite of functions simplify programs that
1810 operate on directory trees. This code comes from 4.4 BSD.
1812 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1813 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1814 NSS scheme used in glibc.
1816 * There is a new malloc debugging hook `__memalign_hook'.
1818 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1819 `unsigned int' in <sys/types.h>. These are for compatibility only and
1820 their use is discouraged.
1822 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1823 done differently, so that it works even without GNU ld.
1825 * New function `euidaccess' checks allowed access to a file like `access',
1826 but using the effective IDs instead of the real IDs.
1828 * The time zone data files have been updated for the latest and greatest
1829 local time conventions of the countries of the world.
1831 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1834 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1835 for formatting floating-point numbers. They are provided only for
1836 compatibility; new programs should use `sprintf' instead. There are
1837 also equivalent function for the `long double' floating-point type and
1838 all functions also exist in a reentrant form.
1840 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1841 functions for maintaining the login-record files (primarily of use to
1842 system programs such as `login'), and convenient functions for
1843 allocating and initializing a pseudo-terminal (pty) device.
1845 * Ulrich Drepper has contributed new support for System V style
1846 shared memory and IPC on systems that support it.
1848 * Ulrich Drepper has contributed several miscellaneous new functions found
1849 in System V: The `hsearch' family of functions provide an effective
1850 implementation of hash tables; `a64l' and `l64a' provide a very simple
1851 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1854 * Ulrich Drepper has contributed new reentrant counterparts for the
1855 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1857 * Ulrich Drepper has contributed new, highly-optimized versions of several
1858 string functions for the i486/Pentium family of processors.
1860 * Ulrich Drepper has updated the Linux-specific code, based largely
1861 on work done in Hongjiu Lu's version of GNU libc for Linux.
1862 The GNU library now supports Linux versions 2.0.10 and later,
1863 using the ELF object file format (i[3456]86-*-linux).
1865 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1867 * David Mosberger-Tang and Richard Henderson have ported the C library
1868 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1869 dynamic linking support for ELF/Alpha.
1871 * Richard Henderson contributed several Alpha optimized assembler function
1872 for arithmetic and string handling.
1874 * Ulrich Drepper has contributed a new set of message catalog functions to
1875 support multiple languages using the <libintl.h> interface, for use with
1876 his new package GNU gettext. Translation volunteers have contributed
1877 catalogs of the library's messages in Spanish, German, and Korean.
1879 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1880 program and the `catgets' function for reading the catalog files it
1881 creates. (The <libintl.h> interface is preferred; we include the
1882 <nl_types.h> interface using `catgets' only for source compatibility with
1883 programs already written to use it.)
1885 * New header file <values.h> gives SVID-compatible names for <limits.h>
1888 * Various new macros, declarations, and small header files for compatibility
1891 * New function `group_member' is a convenient way to check if a process has
1892 a given effective group ID.
1894 * When using GCC 2.7 and later, the socket functions are now declared in a
1895 special way so that passing an argument of type `struct sockaddr_in *',
1896 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1897 `struct sockaddr *' type, does not generate a type-clash warning.
1899 * New function `error' declared in header file <error.h> is a convenient
1900 function for printing error messages and optionally exiting; this is the
1901 canonical function used in GNU programs. The new functions `err', `warn',
1902 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1903 doing the same thing.
1905 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1906 POSIX.2 `glob' function to do ~ and {...} expansion.
1908 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1909 `clearenv' which is used in POSIX.9 is also available.
1911 * New function `getsid' returns session ID number on systems that support it.
1913 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1914 files <db.h> and <mpool.h> provide a rich set of functions for several
1915 types of simple databases stored in memory and in files, and <ndbm.h> is
1916 an old `ndbm'-compatible interface using the `db' functions. Link with
1917 `-ldb' to get these functions.
1919 * New macro `strdupa' copies a string like `strdup', but uses local stack
1920 space from `alloca' instead of dynamic heap space from `malloc'.
1922 * New function `strnlen' is like `strlen' but searches only a given maximum
1923 number of characters for the null terminator. `stpncpy', `strndup' and
1924 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1927 * New function `statfs' in header <sys/statfs.h>.
1929 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1930 provide convenient functions for operating on blocks of null-terminated
1933 * A new suite of functions in <utmp.h> handle all the details of reading
1934 and writing the utmp file.
1936 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1939 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1940 completely POSIX compliant and also implemented the extended functionality
1941 to handle alternate digit representation and alternate era date formats.
1943 * Ulrich Drepper provided an implementation of the `strptime' function
1944 defined in XPG4.2 which transforms a string into a `struct tm' value.
1946 * Paul Eggert provided the tzselect shell script as part of the timezone
1947 code. The shell script makes it easy to select the correct timezone
1950 * The implementation of the malloc family of functions is completely replaced
1951 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1952 The implementation uses the mmap function (if available) and it is
1953 optimized for the use in multi threaded programs.
1955 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1956 functions. This new functionality is usable by specifying a special
1957 salt string and it is compatible with implementation on *BSD systems.
1959 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1960 `getsubopt' to handle second level command line options, `bsd_signal'
1961 to access BSD style `signal' functionality, the obsolete `regexp' style
1964 * the `lchown' function is available on system which support this
1967 * The implementation of the shadow password handling function was contributed
1970 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1972 * POSIX.1g support was added. The <sys/select.h> header is available,
1973 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1974 implementation of `getaddrinfo'.
1978 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1980 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1981 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1983 * The new function `daemon' from 4.4 BSD is useful for server programs that
1984 want to put themselves in the background.
1986 * Joel Sherrill has contributed support for several standalone boards that
1987 run without an operating system.
1989 * `printf', `scanf' and friends now accept a `q' type modifier for long
1990 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1992 * All of the code taken from BSD (notably most of the math and networking
1993 routines) has been updated from the BSD 4.4-Lite release.
1995 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1997 * The new functions `getdomainname' and `setdomainname' fetch or change the
1998 YP/NIS domain name. These are system calls which exist on systems which
2001 * The time zone data files have been updated for the latest international
2004 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2005 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2009 * The C library now includes support for Sun RPC, from Sun's free
2010 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2011 are included. (There is still no support for YP.)
2013 * Tom Quinn has contributed a port of the C library to SGI machines running
2014 Irix 4 (mips-sgi-irix4).
2016 * The new `lockf' function is a simplified interface to the locking
2017 facilities of `fcntl', included for compatibility.
2019 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2021 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2023 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2026 * The error message printed by `assert' for a failed assertion now includes
2027 the name of the program (if using GNU ld) and the name of the calling
2028 function (with versions of GCC that support this).
2030 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2032 * The library now includes the <sys/mman.h> header file and memory
2033 management functions `mmap', `munmap', `mprotect', `msync', and
2034 `madvise', on systems that support those facilities.
2036 * The interface for `mcheck' has changed slightly: the function called to
2037 abort the program when an allocation inconsistency is detected now takes
2038 an argument that indicates the type of failure. The new function
2039 `mprobe' lets you request a consistency check for a particular block at
2040 any time (checks are normally done only when you call `free' or `realloc'
2043 * It is now possible to easily cross-compile the C library, building on one
2044 system a library to run on another machine and/or operating system. All
2045 you need to do is set the variable `HOST_CC' in `configparms' to the
2046 native compiler for programs to run on the machine you are building on (a
2047 few generator programs are used on Unix systems); set `CC' to the
2050 * The new function `fexecve' (only implemented on the GNU system) executes
2051 a program file given a file descriptor already open on the file.
2055 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2056 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2058 * You can set the variable `libprefix' in `configparms' to specify a prefix
2059 to be prepended to installed library files; this makes it easy to install
2060 the GNU C library to be linked as `-lgnuc' or whatever.
2062 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2063 copies a limited number of characters from a string, and returns the
2064 address of the last character written.
2066 * You no longer need to check for whether the installed `stddef.h' is
2067 compatible with the GNU C library. configure now checks for you.
2069 * You can now define a per-stream `fileno' function to convert the
2070 stream's cookie into an integral file descriptor.
2072 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2073 allocates zero bytes of storage, and returns a unique pointer which
2074 you can pass to `realloc' or `free'. The behavior is undefined if
2075 you dereference this pointer.
2077 * The C library now runs on Sony NEWS m68k machines running either
2078 NewsOS 3 or NewsOS 4.
2080 * The new `syscall' function is a system-dependent primitive function
2081 for invoking system calls. It has the canonical behavior on Unix
2082 systems, including unreliable return values for some calls (such as
2083 `pipe', `fork' and `getppid').
2085 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2086 to `EAGAIN', which is the preferred name. On systems whose kernels
2087 use two distinct codes, the C library now translates EWOULDBLOCK to
2088 EAGAIN in every system call function.
2092 * The GNU C Library Reference Manual is now distributed with the library.
2093 `make dvi' will produce a DVI file of the printed manual.
2094 `make info' will produce Info files that you can read on line using C-h i
2095 in Emacs or the `info' program.
2096 Please send comments on the manual to bug-glibc-manual@gnu.org.
2098 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2100 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2102 * Jason Merrill has contributed a port to the Sequent Symmetry running
2103 Dynix version 3 (i386-sequent-dynix).
2105 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2106 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2108 * New function `memory_warnings' lets you arrange to get warnings when
2109 malloc is running out of memory to allocate, like Emacs gives you.
2111 * The C library now contains the relocating allocator used in Emacs 19 for
2112 its editing buffers. This allocator (ralloc) minimizes allocation
2113 overhead and fragmentation by moving allocated regions around whenever it
2114 needs to. You always refer to a ralloc'd region with a "handle" (a
2115 pointer to a pointer--an object of type `void **').
2117 * There is a new `printf' format: `%m' gives you the string corresponding
2118 to the error code in `errno'.
2120 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2121 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2122 pass, the `a' modifier says to fill in a `char **' you pass with a
2125 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2126 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2127 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2129 * `mkstemp' is a traditional Unix function to atomically create and open a
2130 uniquely-named temporary file.
2134 * The standard location for the file that says what the local timezone is
2135 has changed again. It is now `/usr/local/etc/localtime' (or more
2136 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2138 * The distribution no longer contains any files with names longer than 14
2141 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2142 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2144 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2148 * The configuration process has changed quite a bit. The `configure'
2149 script is now used just like the configuration scripts for other GNU
2150 packages. The `sysdeps' directory hierarchy is much rearranged.
2151 The file `INSTALL' explains the new scheme in detail.
2153 * The header files no longer need to be processed into ANSI C and
2154 traditional C versions. There is just one set of files to install, and
2155 it will work with ANSI or old C compilers (including `gcc -traditional').
2157 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2158 MIPS DECStation running Ultrix 4.
2160 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2161 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2162 made itself into a shared library.
2164 * Yet further improved support for the i386, running 4.3 BSD-like systems
2165 (such as Mach 3 with the Unix single-server), or System V.
2167 * New function `strncasecmp' to do case-insensitive string comparison
2168 with limited length.
2170 * New function `strsep' is a reentrant alternative to `strtok'.
2172 * New functions `scandir' and `alphasort' for searching directories.
2174 * New function `setenv' is a better interface to `putenv'.
2176 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2177 function for traversing a directory tree.
2179 * The GNU obstack package is now also part of the C library.
2180 The new function `open_obstack_stream' creates a stdio stream that
2181 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2182 formatted output directly to an obstack.
2184 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2185 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2187 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2189 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2190 things to your strings.
2192 * There are some new test programs: test-fseek, testmb, and testrand.
2194 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2195 These ports are not finished, but are a good starting place for really
2196 supporting those systems.
2198 * `/etc/localtime' is now the standard location for the file that says what
2199 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2200 This follows the general principle that `/etc' is the place for all local
2201 configuration files.
2203 * The C library header files now use `extern "C"' when used by the C++
2204 compiler, so the C library should now work with C++ code.
2206 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2207 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2210 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2211 function which uses the `merge sort' algorithm, and is said to be
2212 significantly faster than the old GNU `qsort' function. Merge sort is
2213 now the standard `qsort' function. The new algorithm can require a lot
2214 of temporary storage; so, the old sorting function is called when the
2215 required storage is not available.
2217 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2218 provides the Unix `crypt' function, plus some other entry points.
2220 * The code and header files taken from 4.4 BSD have been updated with the
2221 latest files released from Berkeley.
2223 ----------------------------------------------------------------------
2224 Copyright information:
2226 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2228 Permission is granted to anyone to make or distribute verbatim copies
2229 of this document as received, in any medium, provided that the
2230 copyright notice and this permission notice are preserved,
2231 thus giving the recipient permission to redistribute in turn.
2233 Permission is granted to distribute modified versions
2234 of this document, or of portions of it,
2235 under the above conditions, provided also that they
2236 carry prominent notices stating who last changed them.
2239 version-control: never
projects / thirdparty / glibc.git / blob