1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2012 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sources.redhat.com/bugzilla/>
6 using `glibc' in the "product" field.
10 * The following bugs are resolved with this release:
12 3479, 6778, 6808, 9685, 11607, 13717, 13696, 13939, 14042, 14090, 14166,
13 14150, 14151, 14154, 14157, 14166, 14173, 14195, 14252, 14283, 14298,
14 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14459, 14505
16 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
17 Optimized versions of memcpy, memset, and memcmp added for System z10 and
19 Implemented by Andreas Krebbel.
21 * The new function secure_getenv allows secure access to the environment,
22 returning NULL if running in a SUID/SGID process. This function replaces
23 the internal function __secure_getenv.
25 * SystemTap static probes have been added into the dynamic linker.
26 Implemented by Gary Benson.
28 * Optimizations of string functions strstr, strcasestr and memmem.
29 Implemented by Maxim Kuvyrkov.
31 * The minimum Linux kernel version that this version of the GNU C Library
32 can be used with is 2.6.16.
34 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
35 powerpc POWER7. Implemented by Will Schmidt.
37 * New configure option --disable-nscd builds the C library such that it
38 never attempts to contact the Name Service Caching Daemon (nscd).
39 New configure option --disable-build-nscd avoids building nscd itself;
40 this is the default if --disable-nscd is used.
45 * The following bugs are resolved with this release:
47 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
48 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
49 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
50 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
51 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
52 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
53 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
54 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
55 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
56 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
57 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658,
58 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739,
59 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806,
60 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871,
61 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895,
62 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
63 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
64 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973,
65 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040,
66 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075,
67 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134,
68 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273, 14277,
71 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
72 configuring glibc with:
73 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
74 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
75 Implemented by H.J. Lu.
79 + define static_assert
83 + declare at_quick_exit and quick_exit also for ISO C11
85 + aligned_alloc. NB: The code is deliberately allows the size parameter
86 to not be a multiple of the alignment. This is a moronic requirement
87 in the standard but it is only a requirement on the caller, not the
92 + uchar.h support added
94 + CMPLX, CMPLXF, CMPLXL added
96 Implemented by Ulrich Drepper.
98 * Support for the IA-64 has been moved to ports.
100 * Remove support for anything but ELF binary format
102 * Checking versions of poll, ppoll added.
103 Implemented by Ulrich Drepper.
105 * More generic and 64-bit performance optimizations to math functions.
106 Implemented by Ulrich Drepper.
108 * New configure option --enable-obsolete-rpc makes the deprecated RPC
109 headers and functions available at compile time as they were before
110 version 2.14. This option will be removed at some time in the future
111 after the TI-RPC library becomes fully sufficient for the needs of
112 existing applications.
114 * Compatibility code for Linux kernel versions before 2.4 has been removed.
115 Note that glibc is not expected to work with any Linux kernel version
118 * New header <sys/auxv.h> and function getauxval allowing easy access to
119 the AT_* key-value pairs passed from the Linux kernel. The header also
120 defines the HWCAP_* bits associated with the AT_HWCAP key.
122 * New locales: mag_IN
124 * New configure option --enable-systemtap builds SystemTap static probes
125 into libc for setjmp and longjmp and into libpthread for various operations.
126 So far the setjmp/longjmp probes and some of the libpthread probes are
127 provided only for i*86 and x86_64.
128 Implemented by Roland McGrath and Rayson Ho.
130 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
132 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
135 * More optimized functions for SPARC. Implemented by David S. Miller.
137 * Improved support for cross-compilation, especially bootstrap builds
138 without a previously built glibc.
140 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
141 Chris Metcalf from Tilera.
143 * Support for the old ARM ABI has been removed from ports. Only the EABI is
144 now supported for ARM processors.
146 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
147 as the name of the dynamic linker, to distinguish it from the
148 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
150 * Support for CRIS has been removed from ports.
152 * A new class of installed header has been documented for low-level
153 platform-specific functionality. PowerPC added the first instance with a
154 function to provide time base register access. Contributed by Tulio
155 Magno Quites Machado Filho.
157 * ix86 configurations now install header files that are consistent with
158 what x86-64 configurations install. These same header files can be used
159 for -m32, -m64, or -mx32 builds.
160 Contributed by H.J. Lu.
162 * Math library bug fixes. A thorough audit of all open math library bugs was
163 conducted by Joseph Myers. Significant progress was made on many math
164 library bugs resulting in more accurate exceptions and function results.
165 Many thanks to all those that contributed including Andreas Jaeger for his
166 patch review and work on the x87 trigonometric instruction issues.
168 * Timezone data is no longer installed. Timezone-related binaries and scripts
169 will continue to be installed. Users should obtain their timezone data from
170 their distribution provider or from the tzdata package at
171 <ftp://munnari.oz.au/pub/>.
175 * The following bugs are resolved with this release:
177 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
178 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
179 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
180 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
181 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
182 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
183 13484, 13506, 13515, 13523, 13524, 13538, 13540
185 * New program pldd to list loaded object of a process
186 Implemented by Ulrich Drepper.
188 * Add nss_db support back to glibc. No more dependency on Berkeley db
189 and support for initgroups lookups.
190 Implemented by Ulrich Drepper.
192 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
193 Contributed by HJ Lu.
195 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
196 Contributed by HJ Lu.
198 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
199 on x86-32 and x86-64.
200 Contributed by Liubov Dmitrieva.
202 * Optimized strchr and strrchr for SSE on x86-32.
203 Contributed by Liubov Dmitrieva.
205 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
206 for x86-64 and x86-32.
207 Contributed by Liubov Dmitrieva.
209 * New interfaces: scandirat, scandirat64
210 Implemented by Ulrich Drepper.
212 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
213 Implemented by Ulrich Drepper.
215 * nscd now also caches the netgroup database.
216 Implemented by Ulrich Drepper.
218 * Integrate libm with gcc's -ffinite-math-only option.
219 Implemented by Ulrich Drepper.
221 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
222 to math functions. Implemented by Ulrich Drepper.
224 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
225 Implemented by Ulrich Drepper.
227 * New Linux interfaces: process_vm_readv, process_vm_writev
229 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
230 Implemented by Ulrich Drepper.
232 * Optimized nearbyint and strcasecmp for PPC.
233 Implemented by Adhemerval Zanella.
235 * New locales: bho_IN, unm_US, es_CU, ta_LK
239 * The following bugs are resolved with this release:
241 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
242 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
243 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
244 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
245 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
246 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
247 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
248 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
249 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
250 12795, 12811, 12813, 12814, 12841
252 * The RPC implementation in libc is obsoleted. Old programs keep working
253 but new programs cannot be linked with the routines in libc anymore.
254 Programs in need of RPC functionality must be linked against TI-RPC.
255 The TI-RPC implementation is IPv6 enabled and there are other benefits.
257 Visible changes of this change include (obviously) the inability to link
258 programs using RPC functions without referencing the TI-RPC library and the
259 removal of the RPC headers from the glibc headers.
260 Implemented by Ulrich Drepper.
262 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
263 syncfs, setns, sendmmsg
265 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
266 yue_HK, lij_IT, mhr_RU
268 * New encodings: CP770, CP771, CP772, CP773, CP774
270 * New program sotruss to trace calls through PLTs
271 Implemented by Ulrich Drepper.
273 * The malloc hook implementation is marked deprecated and will be removed
274 from the default implementation in the next version. The design never
275 worked ever since the introduction of threads. Even programs which do
276 not create threads themselves can use multiple threads created internally.
280 * The following bugs are resolved with this release:
282 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
283 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
284 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
285 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
288 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
290 * POWER7 optimizations: memset, memcmp, strncmp
292 * New optimized string functions for x86-64: strnlen (SSE2),
293 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
294 Implemented by Ulrich Drepper.
298 * The following bugs are resolved with this release:
300 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
301 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
302 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
303 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
304 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
305 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
306 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
307 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
309 * New interfaces: pthread_getname_np, pthread_setname_np
311 * New Linux interface: recvmmsg
313 * STT_GNU_IFUNC implemented for Sparc by David Miller.
315 * The dynamic linker now recognizes supported ABI versions from the
316 EI_ABIVERSION field in the ELF header.
317 Implemented by Ulrich Drepper.
319 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
320 will not be used to fill in password fields in the passwd.byname replies.
321 Instead it is used to synthesize the shadow.byname table, should it be
322 missing. This is a useful mode in some installations involving Solaris.
323 Implemented by Ulrich Drepper.
325 * New locales: kok_IN, sq_MK, cv_RU
329 * The following bugs are resolved with this release:
331 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
332 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
333 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
334 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
335 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
336 10789, 10817, 10823, 10840, 10847
338 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
340 Implemented by Ulrich Drepper.
342 * Checking version of longjmp added that fails if an uninitialized stack
343 frame would be created. Implemented by Ulrich Drepper.
345 * STT_GNU_IFUNC is now supported in static executables.
346 Implemented by H.J. Lu.
348 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
350 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
351 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
352 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
353 Contributed by H.J. Lu.
355 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
356 Implemented by Ulrich Drepper.
358 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
360 Contributed by H.J. Lu.
362 * Support for fma instruction in AVX on x86-64.
363 Implemented by H.J. Lu and Ulrich Drepper.
365 * AVX support in x86-64 auditing support in ld.so.
366 Implemented by H.J. Lu.
368 * STB_GNU_UNIQUE support added.
369 Implemented by Ulrich Drepper.
371 * Implement second fallback mode for optimized DNS lookup for even more
372 broken environments. If two requests from the same port are not
373 handled correctly close the socket and open a new one before sending
374 the second request. The 'single-request-reopen' option in /etc/resolv.conf
375 can be used to select this mode right away, instead of rediscovering the
376 necessity is every process again.
377 Implemented by Ulrich Drepper.
379 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
380 Implemented by Adam Tkac.
382 * Optimized iconv conversions for S390x.
383 Implemented by Andreas Krebbel.
385 * Using condvars with PI mutexes is now more efficient due to kernel
386 support for requeueing to PI futexes. NPTL support added for x86-64.
387 Implemented by Ulrich Drepper.
389 * New locales: ps_AF, my_MM
393 * The following bugs are resolved with this release:
395 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
396 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
397 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
398 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
399 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
401 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
402 Implemented by Ulrich Drepper.
404 * New Linux interfaces: accept4, fallocate, fallocate64.
405 Implemented by Ulrich Drepper.
407 * Correct declarations of string function when used in C++ code. This
408 could lead to compile errors for invalid C++ code.
410 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
413 * New POSIX 2008 interface: psiginfo
414 Implemented by Ulrich Drepper.
416 * New ISO C++1x interfaces: quick_exit, at_quick_exit
417 Implemented by Ulrich Drepper.
419 * Support for selecting between multiple function definitions at runtime
420 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
422 * The libcrypt library can now use the hash function implementations in
423 NSS. Implemented by Ulrich Drepper.
425 * The malloc implementation can be compiled to be less memory efficient
426 but higher performing in multi-threaded programs.
427 Implemented by Ulrich Drepper.
429 * New locales: nan_TW@latin, ks_IN
431 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
432 Implemented by Ulrich Drepper.
434 * Extended printf hook support. It is possible to use user-defined types
435 and extend existing format specifiers.
436 Implemented by Ulrich Drepper.
438 * Handling for group shadow files has been added.
439 Implemented by Ulrich Drepper.
441 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
442 servers (the case, e.g., for some people using the built-in DNS
443 server in ADSL modems/routers). There is a once-per-process timeout
444 in case of a broken server. To avoid it, users can run nscd or put
445 'options single-request' in /etc/resolv.conf.
446 Implemented by Ulrich Drepper.
450 * The following bugs are resolved with this release:
452 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
453 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
454 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
455 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
456 6968, 6974, 6980, 6995, 7008, 7009, 7029
458 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
459 up at the same time. Implemented by Ulrich Drepper.
461 * TLS descriptors for LD and GD on x86 and x86-64.
462 Implemented by Alexandre Oliva.
464 * getaddrinfo now handles DCCP and UDPlite.
465 Implemented by Ulrich Drepper.
467 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
468 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
469 Implemented by Ulrich Drepper.
471 * New implementation of memmem, strstr, and strcasestr which is O(n).
472 Implemented by Eric Blake.
474 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
476 * Implement "e" option for popen to open file descriptor with the
477 close-on-exec flag set. Implemented by Ulrich Drepper.
479 * Implement "b" mode for fmemopen. In this mode writes writes don't
480 implicitly add a NUL byte and seeks from the end of the buffer really
481 use the buffer end, not the string length as the basis.
482 Implemented by Ulrich Drepper.
484 * Many functions, exported and internal, now atomically set the close-on-exec
485 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
487 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
489 Implemented by Pravin Satpute.
491 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
495 * The following bugs are resolved with this release:
497 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
498 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
499 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
500 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
501 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
502 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
503 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
505 * New locales: bo_CN, bo_IN, shs_CA.
507 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
509 * Sorting rules for some Indian languages (Devanagari and Gujarati).
510 Implemented by Pravin Satpute.
512 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
514 * nscd caches now all timeouts for DNS entries
515 Implemented by Ulrich Drepper.
517 * nscd is more efficient and wakes up less often.
518 Implemented by Ulrich Drepper.
520 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
521 vdprintf, and obstack_vprintf.
522 Implemented by Jakub Jelinek.
524 * Faster memset for x86-64.
525 Implemented by Harsha Jagasia and H.J. Lu.
527 * Faster memcpy on x86.
528 Implemented by Ulrich Drepper.
530 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
531 Implemented by Ulrich Drepper.
533 * Faster sqrt and sqrtf implemention for some PPC variants.
534 Implemented by Steven Munroe.
538 * The following bugs are resolved with this release:
540 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
541 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
542 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
543 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
544 5071, 5103, 5104, 5112, 5113, 5184, 5186
546 * More checking functions: fread, fread_unlocked, open*, mq_open.
547 Implemented by Jakub Jelinek and Ulrich Drepper.
549 * Extend fortification to C++. Implemented by Jakub Jelinek.
551 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
552 by not recognizing 'a' as a modifier when those specs are requested.
553 Implemented by Jakub Jelinek.
555 * PPC optimizations to math and string functions.
556 Implemented by Steven Munroe.
558 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
559 options to be passed. Implemented by Ulrich Drepper.
561 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
563 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
564 Implemented by Ulrich Drepper.
566 * Handle private futexes in the NPTL implementation.
567 Implemented by Jakub Jelinek and Ulrich Drepper.
569 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
570 Implemented by Roland McGrath and Ulrich Drepper.
572 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
574 * SHA-256 and SHA-512 based password encryption.
575 Implemented by Ulrich Drepper.
577 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
578 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
581 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
582 Implemented by Ulrich Drepper.
586 * The following bugs are resolved with this release:
588 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
589 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
590 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
591 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
592 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
593 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
594 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
597 * New Linux interfaces: epoll_pwait, sched_getcpu.
599 * New generic interfaces: strerror_l.
601 * nscd can now cache the services database. Implemented by Ulrich Drepper.
605 * The following bugs are resolved with this release:
607 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
608 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
609 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
610 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
611 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
612 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
613 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
614 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
615 3225, 3251, 3252, 3253, 3273
617 * For Linux, the sorting of addresses returned by getaddrinfo now also
618 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
619 Implemented by Ulrich Drepper.
621 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
622 Implemented by Ulrich Drepper.
624 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
626 * New iconv module for MIK. Contributed by Alexander Shopov.
628 * For sites with broken group and/or passwd database, the auto-propagate
629 option of nscd can prevent creating ID lookup entries from the results
630 of a name lookup and vice versa. This usually is no problem but some
631 site might have problems with the default behavior.
632 Implemented by Ulrich Drepper.
634 * Iterating over entire database in NIS can be slow. With the
635 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
636 to trade time for memory. The entire database will be read at once.
637 Implemented by Ulrich Drepper.
639 * The interfaces introduced in RFC 3542 have been implemented by
642 * Support for the new ELF hash table format was added by Ulrich Drepper.
644 * Support for priority inheritance mutexes added by Jakub Jelinek and
647 * Support for priority protected mutexes added by Jakub Jelinek.
649 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
650 or_IN, csb_PL, fy_NL, sr_ME.
654 * More overflow detection functions.
656 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
657 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
659 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
660 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
661 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
662 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
663 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
664 by Masahide Washizawa.
666 * It is now possible to install audit libraries for the dynamic linker using
667 LD_AUDIT. Implemented by Ulrich Drepper.
669 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
670 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
671 For a libc and libpthread that works well on Linux 2.4 kernels, we
672 recommend using the stable 2.3 branch.
674 * The new function open_wmemstream acts like open_memstream,
675 but uses a wchar_t wide character buffer.
677 * The new function ppoll is an improved version of poll, similar to pselect.
679 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
680 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
681 renameat, unlinkat, linkat, symlinkat, readlinkat.
683 * New Linux kernel system calls: unshare,
684 inotify_init, inotify_add_watch, inotify_rm_watch.
686 * The euidaccess function is now also known by the alias eaccess,
687 for compatibility with some other systems.
689 * Timezone data updated to 2006b version.
693 * The following bugs are resolved with this release:
695 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
696 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
697 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
698 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
699 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
700 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
702 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
704 * As of this release, GCC 4 can be used to compile the C Library.
706 * Timezone data updated to 2005m version.
710 * The following bugs are resolved with this release:
712 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
713 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
714 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
715 777, 787, 821, 822, 823, 825
717 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
721 * Support for RFC 3678. Real implementations exist only for Linux so far.
722 Implemented by Ulrich Drepper.
724 * nscd can now cache entries persistently. Expiring entries are reloaded.
725 For speedups the cache can be shared in memory with client processes.
726 Implemented by Ulrich Drepper.
728 * nscd can now perform SELinux checks.
729 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
731 * getaddrinfo queries are now cached. Canonical name lookup is performed
733 Implemented by Ulrich Drepper.
735 * The nothrow function attribute is used when headers are used by gcc when
736 compiling C code. This can avoid significant amounts of exception
739 * The malloc functions perform more error checking and are stricter when
740 it comes to reacting on errors. The default action is to terminate
741 the process after showing an error message. Implemented by Ulrich Drepper.
743 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
744 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
746 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
747 namespaces using the new function dlmopen(). This feature is of course,
748 like most other dynamic loading functionality, not available in statically
749 linked applications. Implemented by Ulrich Drepper.
751 * Low-overhead boundary checking variants of string and some stdio functions
752 were added. These are to be used in conjunction with a gcc patch by
753 Jakub Jelinek which adds calls to these functions if possible.
754 Implemented by Jakub Jelinek and Ulrich Drepper.
756 * Old code for several operating systems and machine architectures that
757 have not been in working condition in a long time have been removed from
758 the main source tree maintained by the GNU C Library's maintainers.
759 These files are now reside in the separate `ports' source module
760 that is usable as an add-on when building the library.
764 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
765 interrogate the dynamic linker, compatible with the Solaris interface.
767 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
768 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
770 * getifaddrs now uses the netlink interface on Linux to get its information.
771 Implemented by Thorsten Kukuk.
773 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
774 Implemented by Ulrich Drepper.
776 * support for non-executable stacks on x86 has been added. Changes mostly
779 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
782 * getaddrinfo now performs destination address selection according to
787 * Thread-safe interfaces for many functions that access locale data
788 were added in version 2.3, but these features were omitted from NEWS.
789 Many functions have variants with an `_l' suffix that take a `locale_t'
790 object as a parameter rather than consulting the current locale.
791 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
792 create and maintain `locale_t' objects. Additionally, the new function
793 `uselocale' sets "the current locale" (as used by functions not so
794 parameterized) set for an individual thread. These features were added
795 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
797 * The functions getresuid, getresgid, setresuid, and setresgid, which
798 have long been available on Linux, are now declared in <unistd.h>
799 and are now also available on the Hurd.
801 * ELF thread-local storage support (TLS) now works on x86-64.
803 * The new dynamic string token $LIB is expanded in shared library names.
804 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
806 * Aldy Hernandez contributed complete software floating point support for
807 PowerPC machines with no FPU.
809 * fexecve is implemented on Linux.
811 * The `btowc' function should work at least twice as fast due to
812 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
814 * With approriate thread add-ons cancelable functions are now implemented
815 in libc.so as well. No need to call the function in libpthread. This
816 change allowed to finally disable the incorrect and expensive handling
817 of weak definition in ld.so.
819 * Yet more PLT entries in libc.so have been removed. We finally arrived
820 at the bare minimum. Startup times improved appropriately.
822 * Support for the new Linux/x86 system call interface was added. The
823 AT_SYSINFO auxiliary vector entry is recognized and handled.
827 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
830 * iconv (the program and the interface) now accepts empty names (excluding
831 options like //TRANSLIT) to mean "use charset of current locale".
833 * localedef can now transliterate characters in strings which are not in
834 the provided charmap. The information from the input locale is used.
836 * Prelinking support was added for ELF targets. This requires additional
837 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
839 * Read-only stdio streams now use mmap to speed up operation by eliminating
840 copying and buffer underflows. To use add 'm' to the mode string of
841 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
843 * The malloc functions were completely rewritten by Wolfram Gloger based
844 on Doug Lea's malloc-2.7.0.c.
846 * Isamu Hasegawa contributed a completely new and POSIX-conformant
847 implementation of regex.
849 * Bruno Haible upgraded the iconv and locale implementation to support
852 * Contents of the LC_* and LANG environment variables in the CEN style are
853 not recognized anymore. It never was used. Change by Ulrich Drepper.
855 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
856 thread-local storage (TLS) ABI on some platforms.
857 Changes by Ulrich Drepper. SH support by Kaz Kojima.
859 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
860 EUC-JISX0213, and TSCII.
862 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
863 BSD-compatible interface for getting all network interface addresses.
864 Implementation for IPv4 by Roland McGrath.
866 * Loading of locale data is faster due to the introduction of a locale
867 archive. Implemented by Roland McGrath and Ulrich Drepper.
869 * Startup times are significantly reduced by not using exported functions
870 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
873 * Steven Munroe contributed a port to PowerPC64/Linux.
877 * The Hurd now uses the GNU libio implementation of stdio rather than the
878 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
880 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
881 with the same behavior as the Linux system call of the same name.
885 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
886 128-bit long double format.
888 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
889 IBM1161, and IBM1162 charsets.
891 * Andreas Jaeger contributed a port to x86-64/Linux.
893 * Peter Bruin contributed a port to PowerPC/Hurd.
895 * libc functions using I/O streams now can handle wide-oriented streams
898 * optimizations in the dynamic linker. Binaries created by recent binutils
899 versions start up quicker due to reduced time spent on relocations.
901 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
905 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
906 asinh, atanh, j0 for the 128-bit long double format.
908 * Bruno Haible updated all the code handling Unicode in some form to
911 * Speed of regex for single-byte locales is back to previous levels.
912 Patch by Isamu Hasegawa.
914 * Alpha, SPARC, and IA-64 now also using floating stacks.
916 * Startup time of internationalized applications greatly improved through
917 iconv cache. Use iconvconfig to generate the cache file.
918 Contributed by Ulrich Drepper.
920 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
921 severe performance problems. Patch by David Mosberger.
923 * The Hurd port got a lot more functionality like AIO, various stdio
924 extensions, etc. Mainly done by Roland McGrath.
926 * mtrace can now lookup symbols in shared libraries.
930 * Intel's IA-64 math library is largely integrated. It provides fast and
931 accurate implementatations for most basic and standard math functions
932 in float, double, and long double format.
934 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
935 and asin for the 96-bit long double format and asin, log, tan for the
936 128-bit long double format.
938 * The beginning of a last-bit accurate math library by IBM Haifa were added.
939 The basic double functions exist today. Contributed by Abraham Ziv
940 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
941 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
943 * An asynchronous name lookup library was added. The interface is designed
944 after POSIX AIO. The proposal was circulated beforehand to get comments.
945 No negative ones came in. Implemented by Ulrich Drepper.
947 * Port to S390/64bit contributed by Martin Schwidefsky
948 <schwidefsky@de.ibm.com>.
950 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
951 of functions for Linux/IA-64.
953 * The RPC code is now thread safe. Threads can now use the same service
954 of different services at the same time. Patch by Eric Norum
955 <eric.norum@usask.ca> with some help by Ulrich Drepper.
957 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
958 family of functions for Linux/S390.
960 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
961 of functions for Linux/x86.
963 * Port to Linux/CRIS contributed by Axis Communications.
967 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
968 we can now check for namespace violations and missing declarations. The
969 result is that almost all headers are now Unix-compliant (as defined in
970 the upcoming XPG6). The negative side is that some programs might need
971 corrections, too, if they depend on the incorrect form of the headers in
972 previous versions which defined too many symbols and included too many
975 * regex now handles multibyte character sets correctly.
976 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
978 * iconv (the program) does now conform to the upcoming XPG6 and handles
979 charmaps. Instead of the charset names the path of charmaps can be
980 provided and the conversion happens based on this data.
981 Contributed by Ulrich Drepper.
983 * The locale program now provides detailed information about the installed
988 only lists the names of the supported locales
992 provides details such as country, language, and codeset name.
993 Contributed by Ulrich Drepper.
997 * The gencat program now parses the input file according to the charset
998 selected by the LC_CTYPE category. This is important for stateful
999 character sets. To make generating catalogs easier there is a way
1000 to overwrite the charset selected by the locale: before the first
1001 message or $ quote line the catalog can contain a line like
1003 $ codeset=ISO-8859-2
1005 to select the charset (ISO-8859-2 in this case).
1007 Implemented by Shinya Hanataka and Ulrich Drepper.
1009 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1010 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1011 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1013 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1014 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1016 * The LANGUAGE environment variable is now ignored unless the locale is
1017 changed from the default "C" locale.
1019 * The usual bug fixes.
1023 * Greg McGary added runtime support for bounds checking using gcc's
1024 new -fbounded-pointers option. ix86 target is complete. PowerPC
1027 * Thorsten Kukuk added secure mode support to nscd.
1029 * The Berkeley db libraries have been removed.
1031 Related, the nss_db module is now in a separate package since it
1032 obviously requires a database library being available.
1034 * Wide character I/O streams implemented by Ulrich Drepper.
1036 * Functions from the extended socket API added by Ulrich Drepper.
1038 * Functions feenableexcept and fedisableexcept to control the
1039 behaviour of individual exceptions have been added by Andreas Jaeger.
1041 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1043 * The resolver code has been updated from bind 8.2.3-T5B which supports
1044 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1047 This change could in some situations effect backward compatibility. Since
1048 now `_res' is a thread-local instead of a global variable, modifying it
1049 in one thread does not have any effect in other threads.
1051 The resolver library was also extended to allow IPv6 as the transport
1052 protocol for the requests. This work was done by Stig Venaas.
1054 * Compatibility code for K&R C compilers has been removed from the
1055 header files. A ISO C compiler is needed to use the library
1056 (conforming to either C89 or C99 standard).
1058 * Complete rewrite of the localedef program to support multibyte character
1059 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1060 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1061 Implemented by Ulrich Drepper.
1063 Bruno Haible significantly improved the generation and use of the data
1064 structures for the wide character tables.
1066 * Plural handling in gettext implemented by Ulrich Drepper.
1068 * The utmp daemon has been removed.
1070 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1072 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1075 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1077 * POSIX barriers implemented by Kaz Kylheku.
1079 * POSIX spawn function family implemented by Ulrich Drepper.
1081 * POSIX spinlocks are now available.
1083 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1085 * the configure option --enable-kernel=X.Y.Z allows to strip out
1086 compatibility for kernel versions before X.Y.Z. This is currently only
1087 implemented for Linux.
1089 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1090 field sin6_scope_id. This means that all programs using IPv6 should be
1091 recompiled. Don't expect binary compatibility with previous glibc
1094 * various conversion modules for IBM character sets contributed by
1097 * IA-64 port by Jes Sorensen and HJ Lu.
1111 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1113 * New xdr functions are added; some rpc functions are now 64bit clean.
1115 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1117 * Fixed known incompatibilities with glibc 2.0.
1119 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1121 * Optimized a number of functions (especially the ELF dynamic loader).
1123 * Update timezone data files.
1125 * lots of charmaps corrections
1127 * some new locale definitions and charmaps
1132 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1133 conform to POSIX member type requirements. Symbol versions have been
1134 adjusted as needed within the library, and for direct use by applications,
1135 but there is potential for problems if third-party libraries use
1136 struct timeval as part of their interface. This does not present
1137 a problem for X and other "essential" system libraries.
1139 * An additional locale model to support C++ Standard Library locale
1140 model and probably more was implemented by Ulrich Drepper.
1142 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1145 * Miles Bader provided the `argp' function family to support hierachical
1146 command line argument parsing, layered on top of getopt.
1148 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1150 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1153 * scanf recognizes the %a and %A format for scanning floating point numbers.
1155 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1156 information and interfaces for the available integer types.
1158 * about 130 new math functions were added to implement the ISO C9x math
1161 * the new header <complex.h> contains definitions of the complex math
1162 functions from ISO C 9X.
1164 * the new header <tgmath.h> defines generic macros to use complex or
1165 real valued functions.
1167 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1169 * Andreas Jaeger provided a test suite for the math library.
1171 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1173 * Ulrich Drepper added character set conversion functions (iconv).
1175 * Optimized string functions have been added.
1177 * The localedata addon is now part of glibc.
1179 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1181 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1182 daemon for NSS (nscd).
1184 Missing a better place here are some numbers on improvements. Under
1185 Linux 2.1.125 un-tar-ing the kernel sources takes
1189 using local files 12.19s 6.88s 22.91s
1191 using NIS 13.92s 8.91s 26.34s
1193 using NIS & nscd 10.37s 7.34s 25.30s
1195 using NIS+ 27.57s 30.37s 640.46s
1197 using NIS+ & nscd 10.25s 7.83s 26.51s
1199 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1201 Keep in mind that non-namelookup related operations dominate above times.
1202 It was just a common complain that using NIS+ unpacking the kernel is
1205 [1] The old nscd implementation is not available anymore since it was
1206 distributed with glibc up to version 2.0.98 and thus is now replaced.
1208 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1210 * Mark Kettenis provided a Hesiod NSS module.
1212 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1213 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1215 * rcmd can now handle netgroups (Dick Streefland).
1217 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1220 * Support for the IPv6 protocol has been added to the socket API, as per the
1221 latest draft standards.
1223 * Support for Linux 2.2 has been added.
1225 * Interface changes relative to the latest 2.0.x release:
1226 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1227 addseverity NEW: Unix98
1228 alphasort64 NEW: LFS
1229 argp_err_exit_status NEW: argp, GNU ext
1230 argp_error NEW: argp, GNU ext
1231 argp_failure NEW: argp, GNU ext
1232 argp_help NEW: argp, GNU ext
1233 argp_parse NEW: argp, GNU ext
1234 argp_program_bug_address NEW: argp, GNU ext
1235 argp_program_version NEW: argp, GNU ext
1236 argp_program_version_hook NEW: argp, GNU ext
1237 argp_state_help NEW: argp, GNU ext
1238 argp_usage NEW: argp, GNU ext
1239 authdes_create NEW: Secure RPC
1240 authdes_getucred NEW: Secure RPC
1241 authdes_pk_create NEW: Secure RPC
1242 backtrace NEW: GNU ext.
1243 backtrace_symbols NEW: GNU ext.
1244 backtrace_symbols_fd NEW: GNU ext.
1246 cacosf NEW: ISO C 9x
1247 cacosh NEW: ISO C 9x
1248 cacoshf NEW: ISO C 9x
1249 cacoshl NEW: ISO C 9x
1250 cacosl NEW: ISO C 9x
1257 casinf NEW: ISO C 9x
1258 casinh NEW: ISO C 9x
1259 casinhf NEW: ISO C 9x
1260 casinhl NEW: ISO C 9x
1261 casinl NEW: ISO C 9x
1263 catanf NEW: ISO C 9x
1264 catanh NEW: ISO C 9x
1265 catanhf NEW: ISO C 9x
1266 catanhl NEW: ISO C 9x
1267 catanl NEW: ISO C 9x
1268 cbc_crypt NEW: Secure RPC
1272 ccoshf NEW: ISO C 9x
1273 ccoshl NEW: ISO C 9x
1279 cimagf NEW: ISO C 9x
1280 cimagl NEW: ISO C 9x
1281 clearerr_locked REMOVED
1282 clntunix_create NEW: sunrpc ext
1284 clog10 NEW: ISO C 9x
1285 clog10f NEW: ISO C 9x
1286 clog10l NEW: ISO C 9x
1296 cprojf NEW: ISO C 9x
1297 cprojl NEW: ISO C 9x
1299 crealf NEW: ISO C 9x
1300 creall NEW: ISO C 9x
1305 csinhf NEW: ISO C 9x
1306 csinhl NEW: ISO C 9x
1309 csqrtf NEW: ISO C 9x
1310 csqrtl NEW: ISO C 9x
1314 ctanhf NEW: ISO C 9x
1315 ctanhl NEW: ISO C 9x
1317 des_setparity NEW: Secure RPC
1318 ecb_crypt NEW: Secure RPC
1319 endutxent NEW: Unix98
1321 exp10f NEW: ISO C 9x
1322 exp10l NEW: ISO C 9x
1326 fattach NEW: STREAMS
1327 fdetach NEW: STREAMS
1331 feclearexcept NEW: ISO C 9x
1332 fegetenv NEW: ISO C 9x
1333 fegetexceptflag NEW: ISO C 9x
1334 fegetround NEW: ISO C 9x
1335 feholdexcept NEW: ISO C 9x
1337 feraiseexcept NEW: ISO C 9x
1338 ferror_locked REMOVED
1339 fesetenv NEW: ISO C 9x
1340 fesetexceptflag NEW: ISO C 9x
1341 fesetround NEW: ISO C 9x
1342 fetestexcept NEW: ISO C 9x
1343 feupdateenv NEW: ISO C 9x
1344 fflush_locked REMOVED
1348 fgets_unlocked NEW: GNU ext.
1349 fileno_locked REMOVED
1361 fputc_locked REMOVED
1362 fputs_unlocked NEW: GNU ext.
1363 fread_unlocked NEW: GNU ext.
1368 fstatvfs NEW: Unix98
1372 ftruncate64 NEW: LFS
1374 fwrite_unlocked NEW: GNU ext.
1375 gai_strerror NEW: IPv6
1379 getchar_locked REMOVED
1381 getdate_err NEW: Unix98
1382 getdate_r NEW: GNU ext.
1384 getnameinfo NEW: IPv6
1385 getnetname NEW: Secure RPC
1386 getpmsg NEW: STREAMS
1387 getpt NEW: Unix98 PTY
1388 getrlimit64 NEW: LFS
1389 getutxent NEW: Unix98
1390 getutxid NEW: Unix98
1391 getutxline NEW: Unix98
1392 glob64 NEW: GNU ext.
1393 globfree64 NEW: GNU ext.
1394 gnu_get_libc_release NEW: GNU ext.
1395 gnu_get_libc_version NEW: GNU ext.
1396 grantpt NEW: Unix98 PTY
1397 host2netname NEW: Secure RPC
1399 iconv_close NEW: iconv
1400 iconv_open NEW: iconv
1401 if_freenameindex NEW: IPv6
1402 if_indextoname NEW: IPv6
1403 if_nameindex NEW: IPv6
1404 if_nametoindex NEW: IPv6
1405 in6addr_any NEW: IPv6
1406 in6addr_loopback NEW: IPv6
1407 inet6_isipv4mapped NEW: IPv6
1408 isastream NEW: STREAMS
1409 iswblank NEW: GNU ext.
1410 key_decryptsession NEW: Secure RPC
1411 key_decryptsession_pk NEW: Secure RPC
1412 key_encryptsession NEW: Secure RPC
1413 key_encryptsession_pk NEW: Secure RPC
1414 key_gendes NEW: Secure RPC
1415 key_get_conv NEW: Secure RPC
1416 key_secretkey_is_set NEW: Secure RPC
1417 key_setnet NEW: Secure RPC
1418 key_setsecret NEW: Secure RPC
1419 llrint NEW: ISO C 9x
1420 llrintf NEW: ISO C 9x
1421 llrintl NEW: ISO C 9x
1422 llround NEW: ISO C 9x
1423 llroundf NEW: ISO C 9x
1424 llroundl NEW: ISO C 9x
1429 lrintf NEW: ISO C 9x
1430 lrintl NEW: ISO C 9x
1431 lround NEW: ISO C 9x
1432 lroundf NEW: ISO C 9x
1433 lroundl NEW: ISO C 9x
1435 makecontext NEW: Unix98
1436 mempcpy NEW: GNU ext.
1439 modify_ldt NEW: kernel
1443 nearbyint NEW: ISO C 9x
1444 nearbyintf NEW: ISO C 9x
1445 nearbyintl NEW: ISO C 9x
1446 netname2host NEW: Secure RPC
1447 netname2user NEW: Secure RPC
1448 nexttoward NEW: ISO C 9x
1449 nexttowardf NEW: ISO C 9x
1450 nexttowardl NEW: ISO C 9x
1454 passwd2des NEW: Secure RPC
1456 pow10f NEW: GNU ext.
1457 pow10l NEW: GNU ext.
1460 printf_size NEW: GNU ext.
1461 printf_size_info NEW: GNU ext.
1462 profil_counter REMOVED
1463 pthread_mutexattr_getkind_np REPLACED
1464 pthread_mutexattr_setkind_np REPLACED
1465 ptsname NEW: Unix98 PTY
1466 ptsname_r NEW: Unix98 PTY
1468 putchar_locked REMOVED
1469 putgrent NEW: GNU ext.
1471 putpmsg NEW: STREAMS
1472 pututxline NEW: Unix98
1476 readdir64_r NEW: LFS
1477 remquo NEW: ISO C 9x
1478 remquof NEW: ISO C 9x
1479 remquol NEW: ISO C 9x
1481 roundf NEW: ISO C 9x
1482 roundl NEW: ISO C 9x
1484 scalbln NEW: ISO C 9x
1485 scalblnf NEW: ISO C 9x
1486 scalblnl NEW: ISO C 9x
1488 sendfile NEW: kernel
1489 setcontext NEW: Unix98
1490 setrlimit64 NEW: LFS
1491 setutxent NEW: Unix98
1493 sigignore NEW: Unix98
1494 sigqueue NEW: POSIX.1b
1495 sigrelse NEW: Unix98
1496 sigset NEW: POSIX.1b
1497 sigtimedwait NEW: POSIX.1b
1498 sigwaitinfo NEW: POSIX.1b
1499 sincos NEW: GNU ext.
1500 sincosf NEW: GNU ext.
1501 sincosl NEW: GNU ext.
1505 strcasestr NEW: GNU ext.
1506 strtoimax NEW: ISO C 9x
1507 strtoumax NEW: ISO C 9x
1508 strverscmp NEW: GNU ext.
1509 svcauthdes_stats NEW: Secure RPC
1510 svcunix_create NEW: sunrpc etx
1511 svcunixfd_create NEW: sunrpc ext
1512 swapcontext NEW: Unix98
1513 tcgetsid NEW: Unix98 PTY
1514 tdestroy NEW: GNU ext.
1515 tgamma NEW: ISO C 9x
1516 tgammaf NEW: ISO C 9x
1517 tgammal NEW: ISO C 9x
1521 truncf NEW: ISO C 9x
1522 truncl NEW: ISO C 9x
1524 unlockpt NEW: Unix98 PTY
1525 updwtmpx NEW: Unix98
1526 user2netname NEW: Secure RPC
1527 utmpxname NEW: Unix98
1528 versionsort NEW: GNU ext.
1529 versionsort64 NEW: GNU ext.
1531 wcscasecmp NEW: GNU ext.
1532 wcsncasecmp NEW: GNU ext.
1533 wcsnlen NEW: GNU ext.
1534 wcstoimax NEW: ISO C 9x
1535 wcstoll NEW: ISO C 9x
1536 wcstoull NEW: ISO C 9x
1537 wcstoumax NEW: ISO C 9x
1539 wordexp NEW: POSIX.2
1540 wordfree NEW: POSIX.2
1541 write_profiling REMOVED
1542 xdecrypt NEW: Secure RPC
1543 xdr_authdes_cred NEW: Secure RPC
1544 xdr_authdes_verf NEW: Secure RPC
1545 xdr_cryptkeyarg NEW: Secure RPC
1546 xdr_cryptkeyarg2 NEW: Secure RPC
1547 xdr_cryptkeyres NEW: Secure RPC
1548 xdr_getcredres NEW: Secure RPC
1549 xdr_key_netstarg NEW: Secure RPC
1550 xdr_key_netstres NEW: Secure RPC
1551 xdr_keybuf NEW: Secure RPC
1552 xdr_keystatus NEW: Secure RPC
1553 xdr_netnamestr NEW: Secure RPC
1554 xdr_sizeof NEW: Secure RPC
1555 xdr_unixcred NEW: sunrpc ext
1556 xencrypt NEW: Secure RPC
1557 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1568 * inet_ntoa is thread-safe
1570 * updwtmp is moved from libutil to libc
1572 * rewrite of cbrt function
1574 * update of timezone data
1588 * add atoll function
1590 * fix complex problems in Berkeley DB code
1592 * fix math functions
1596 * fixed lots of header problems (especially Linux/GNU specific)
1598 * dynamic loader preserves all registers
1600 * Roland McGrath provided support for handling of auxiliary objects in
1601 the ELF dynamic loader.
1603 * support for parallel builds is improved
1607 * GNU extensions are no longer declared by default. To enable them you
1608 must define the macro `_GNU_SOURCE' in your program or compile with
1611 * The library has changed from using GNU ld symbol aliases to using weak
1612 symbols where available. The ELF object file format supports weak
1613 symbols; GNU ld also supports weak symbols in the a.out format. (There
1614 is also now support for other GNU ld extensions in ELF. Use the
1615 `--with-elf' option to configure to indicate you have ELF, and
1616 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1617 of many files which contained only symbol aliases, reducing the size of
1618 the source and the compiled library; many other files were renamed to
1619 less cryptic names previously occupied by the symbol alias files.
1620 There is a new header file <elf.h> for programs which operate on
1621 files in the ELF format.
1623 * Converted to Autoconf version 2, so `configure' has more options.
1624 Run `configure --help' to see the details.
1626 * The library can now be configured to build profiling, highly-optimized
1627 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1628 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1629 `configure' enable building these extra libraries. The shared library is
1630 built by default when using both ELF and GNU ld. When shared libraries
1631 are enabled, the new library `-ldl' is available for arbitrary run-time
1632 loading of shared objects; its interface is defined in <dlfcn.h>. The
1633 new header file <link.h> gives access to the internals of the run-time
1634 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1635 application of same name on other systems and it provides information
1636 about dynamically linked binaries.
1638 * The C library now provides the run-time support code for profiling
1639 executables compiled with `-pg'. Programs can control the profiling code
1640 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1641 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1642 the support for this file format was contributed by David Mosberger-Tang.
1644 * The math code has been replaced with a math library based on fdlibm from
1645 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1646 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1647 functions. The math functions now reside in a separate library, so
1648 programs using them will need to use `-lm' their linking commands.
1650 * John C. Bowman contributed optimized ix87 assembler inline functions.
1652 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1653 mechanism similar to that found in Solaris 2. This is now used for the
1654 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1655 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1656 file controls what services are used for each individual database. This
1657 works by loading shared libraries with names specified in `nsswitch.conf',
1658 so service modules can be changed or added at any time without even
1659 relinking any program. Currently there are the file, db, and NIS based
1660 NSS services available.
1662 * The new functions `strtoq' and `strtouq' parse integer values from
1663 strings, like `strtol' and `strtoul', but they return `long long int' and
1664 `unsigned long long int' values, respectively (64-bit quantities).
1666 * The new functions `strtof' and `strtold' parse floating-point values from
1667 strings, like `strtod', but they return `float' and `long double' values,
1668 respectively (on some machines `double' and `long double' are the same).
1670 * Ulrich Drepper has contributed new implementations of the floating-point
1671 printing and reading code used in the `printf' family of functions and
1672 `strtod', `strtof', and `strtold'. These new functions are perfectly
1673 accurate, and much faster than the old ones.
1675 * The implementation of the POSIX locale model was completely rewritten by
1676 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1677 to compile the POSIX locale definition.
1679 * The former dummy implementations of the strcoll and strxfrm function are
1680 now replaced by fully functional code contributed by Ulrich Drepper. The
1681 collation information comes from the POSIX locale definitions.
1683 * The new header <langinfo.h> defines an interface for accessing
1684 various locale-dependent data (using the locale chosen with `setlocale').
1686 * Ulrich Drepper has contributed a new suite of functions for operation on
1687 wide-character and multibyte-character strings, in <wchar.h>;
1688 and classification and case conversion of wide characters, in <wctype.h>.
1689 These new functions are conforming to the ISO C, Amendement 1 specification.
1691 * There is now a second implementation of the standard I/O library available.
1692 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1693 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1695 * You can now use positional parameter specifications in format strings
1696 for the `printf' and `scanf' families of functions. For example,
1697 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1698 ``Number 6, Mr Jones''. This is mainly useful when providing different
1699 format strings for different languages, whose grammars may dictate
1700 different orderings of the values being printed. To support this
1701 feature, the interface for `register_printf_handler' has changed; see
1702 the header file <printf.h> for details.
1704 * The `printf' and `scanf' families of functions now understand a new
1705 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1706 to group numbers as indicated by the locale; for `scanf' and friends, this
1707 says to accept as valid only a number with all the proper grouping
1708 separators in the right places. In the default "C" locale, numbers are
1709 not grouped; but locales for specific countries will define the usual
1710 conventions (i.e. separate thousands with `,' in the US locale).
1712 * The pgrp functions have been regularized, slightly incompatibly but much
1713 less confusingly. The core functions are now `getpgid' and `setpgid',
1714 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1715 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1716 provided for compatibility. There is no longer an incompatible `getpgrp'
1717 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1719 * The new header file <fts.h> and suite of functions simplify programs that
1720 operate on directory trees. This code comes from 4.4 BSD.
1722 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1723 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1724 NSS scheme used in glibc.
1726 * There is a new malloc debugging hook `__memalign_hook'.
1728 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1729 `unsigned int' in <sys/types.h>. These are for compatibility only and
1730 their use is discouraged.
1732 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1733 done differently, so that it works even without GNU ld.
1735 * New function `euidaccess' checks allowed access to a file like `access',
1736 but using the effective IDs instead of the real IDs.
1738 * The time zone data files have been updated for the latest and greatest
1739 local time conventions of the countries of the world.
1741 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1744 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1745 for formatting floating-point numbers. They are provided only for
1746 compatibility; new programs should use `sprintf' instead. There are
1747 also equivalent function for the `long double' floating-point type and
1748 all functions also exist in a reentrant form.
1750 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1751 functions for maintaining the login-record files (primarily of use to
1752 system programs such as `login'), and convenient functions for
1753 allocating and initializing a pseudo-terminal (pty) device.
1755 * Ulrich Drepper has contributed new support for System V style
1756 shared memory and IPC on systems that support it.
1758 * Ulrich Drepper has contributed several miscellaneous new functions found
1759 in System V: The `hsearch' family of functions provide an effective
1760 implementation of hash tables; `a64l' and `l64a' provide a very simple
1761 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1764 * Ulrich Drepper has contributed new reentrant counterparts for the
1765 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1767 * Ulrich Drepper has contributed new, highly-optimized versions of several
1768 string functions for the i486/Pentium family of processors.
1770 * Ulrich Drepper has updated the Linux-specific code, based largely
1771 on work done in Hongjiu Lu's version of GNU libc for Linux.
1772 The GNU library now supports Linux versions 2.0.10 and later,
1773 using the ELF object file format (i[3456]86-*-linux).
1775 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1777 * David Mosberger-Tang and Richard Henderson have ported the C library
1778 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1779 dynamic linking support for ELF/Alpha.
1781 * Richard Henderson contributed several Alpha optimized assembler function
1782 for arithmetic and string handling.
1784 * Ulrich Drepper has contributed a new set of message catalog functions to
1785 support multiple languages using the <libintl.h> interface, for use with
1786 his new package GNU gettext. Translation volunteers have contributed
1787 catalogs of the library's messages in Spanish, German, and Korean.
1789 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1790 program and the `catgets' function for reading the catalog files it
1791 creates. (The <libintl.h> interface is preferred; we include the
1792 <nl_types.h> interface using `catgets' only for source compatibility with
1793 programs already written to use it.)
1795 * New header file <values.h> gives SVID-compatible names for <limits.h>
1798 * Various new macros, declarations, and small header files for compatibility
1801 * New function `group_member' is a convenient way to check if a process has
1802 a given effective group ID.
1804 * When using GCC 2.7 and later, the socket functions are now declared in a
1805 special way so that passing an argument of type `struct sockaddr_in *',
1806 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1807 `struct sockaddr *' type, does not generate a type-clash warning.
1809 * New function `error' declared in header file <error.h> is a convenient
1810 function for printing error messages and optionally exiting; this is the
1811 canonical function used in GNU programs. The new functions `err', `warn',
1812 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1813 doing the same thing.
1815 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1816 POSIX.2 `glob' function to do ~ and {...} expansion.
1818 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1819 `clearenv' which is used in POSIX.9 is also available.
1821 * New function `getsid' returns session ID number on systems that support it.
1823 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1824 files <db.h> and <mpool.h> provide a rich set of functions for several
1825 types of simple databases stored in memory and in files, and <ndbm.h> is
1826 an old `ndbm'-compatible interface using the `db' functions. Link with
1827 `-ldb' to get these functions.
1829 * New macro `strdupa' copies a string like `strdup', but uses local stack
1830 space from `alloca' instead of dynamic heap space from `malloc'.
1832 * New function `strnlen' is like `strlen' but searches only a given maximum
1833 number of characters for the null terminator. `stpncpy', `strndup' and
1834 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1837 * New function `statfs' in header <sys/statfs.h>.
1839 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1840 provide convenient functions for operating on blocks of null-terminated
1843 * A new suite of functions in <utmp.h> handle all the details of reading
1844 and writing the utmp file.
1846 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1849 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1850 completely POSIX compliant and also implemented the extended functionality
1851 to handle alternate digit representation and alternate era date formats.
1853 * Ulrich Drepper provided an implementation of the `strptime' function
1854 defined in XPG4.2 which transforms a string into a `struct tm' value.
1856 * Paul Eggert provided the tzselect shell script as part of the timezone
1857 code. The shell script makes it easy to select the correct timezone
1860 * The implementation of the malloc family of functions is completely replaced
1861 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1862 The implementation uses the mmap function (if available) and it is
1863 optimized for the use in multi threaded programs.
1865 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1866 functions. This new functionality is usable by specifying a special
1867 salt string and it is compatible with implementation on *BSD systems.
1869 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1870 `getsubopt' to handle second level command line options, `bsd_signal'
1871 to access BSD style `signal' functionality, the obsolete `regexp' style
1874 * the `lchown' function is available on system which support this
1877 * The implementation of the shadow password handling function was contributed
1880 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1882 * POSIX.1g support was added. The <sys/select.h> header is available,
1883 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1884 implementation of `getaddrinfo'.
1888 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1890 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1891 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1893 * The new function `daemon' from 4.4 BSD is useful for server programs that
1894 want to put themselves in the background.
1896 * Joel Sherrill has contributed support for several standalone boards that
1897 run without an operating system.
1899 * `printf', `scanf' and friends now accept a `q' type modifier for long
1900 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1902 * All of the code taken from BSD (notably most of the math and networking
1903 routines) has been updated from the BSD 4.4-Lite release.
1905 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1907 * The new functions `getdomainname' and `setdomainname' fetch or change the
1908 YP/NIS domain name. These are system calls which exist on systems which
1911 * The time zone data files have been updated for the latest international
1914 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1915 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1919 * The C library now includes support for Sun RPC, from Sun's free
1920 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1921 are included. (There is still no support for YP.)
1923 * Tom Quinn has contributed a port of the C library to SGI machines running
1924 Irix 4 (mips-sgi-irix4).
1926 * The new `lockf' function is a simplified interface to the locking
1927 facilities of `fcntl', included for compatibility.
1929 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1931 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1933 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1936 * The error message printed by `assert' for a failed assertion now includes
1937 the name of the program (if using GNU ld) and the name of the calling
1938 function (with versions of GCC that support this).
1940 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1942 * The library now includes the <sys/mman.h> header file and memory
1943 management functions `mmap', `munmap', `mprotect', `msync', and
1944 `madvise', on systems that support those facilities.
1946 * The interface for `mcheck' has changed slightly: the function called to
1947 abort the program when an allocation inconsistency is detected now takes
1948 an argument that indicates the type of failure. The new function
1949 `mprobe' lets you request a consistency check for a particular block at
1950 any time (checks are normally done only when you call `free' or `realloc'
1953 * It is now possible to easily cross-compile the C library, building on one
1954 system a library to run on another machine and/or operating system. All
1955 you need to do is set the variable `HOST_CC' in `configparms' to the
1956 native compiler for programs to run on the machine you are building on (a
1957 few generator programs are used on Unix systems); set `CC' to the
1960 * The new function `fexecve' (only implemented on the GNU system) executes
1961 a program file given a file descriptor already open on the file.
1965 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1966 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1968 * You can set the variable `libprefix' in `configparms' to specify a prefix
1969 to be prepended to installed library files; this makes it easy to install
1970 the GNU C library to be linked as `-lgnuc' or whatever.
1972 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1973 copies a limited number of characters from a string, and returns the
1974 address of the last character written.
1976 * You no longer need to check for whether the installed `stddef.h' is
1977 compatible with the GNU C library. configure now checks for you.
1979 * You can now define a per-stream `fileno' function to convert the
1980 stream's cookie into an integral file descriptor.
1982 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1983 allocates zero bytes of storage, and returns a unique pointer which
1984 you can pass to `realloc' or `free'. The behavior is undefined if
1985 you dereference this pointer.
1987 * The C library now runs on Sony NEWS m68k machines running either
1988 NewsOS 3 or NewsOS 4.
1990 * The new `syscall' function is a system-dependent primitive function
1991 for invoking system calls. It has the canonical behavior on Unix
1992 systems, including unreliable return values for some calls (such as
1993 `pipe', `fork' and `getppid').
1995 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1996 to `EAGAIN', which is the preferred name. On systems whose kernels
1997 use two distinct codes, the C library now translates EWOULDBLOCK to
1998 EAGAIN in every system call function.
2002 * The GNU C Library Reference Manual is now distributed with the library.
2003 `make dvi' will produce a DVI file of the printed manual.
2004 `make info' will produce Info files that you can read on line using C-h i
2005 in Emacs or the `info' program.
2006 Please send comments on the manual to bug-glibc-manual@gnu.org.
2008 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2010 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2012 * Jason Merrill has contributed a port to the Sequent Symmetry running
2013 Dynix version 3 (i386-sequent-dynix).
2015 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2016 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2018 * New function `memory_warnings' lets you arrange to get warnings when
2019 malloc is running out of memory to allocate, like Emacs gives you.
2021 * The C library now contains the relocating allocator used in Emacs 19 for
2022 its editing buffers. This allocator (ralloc) minimizes allocation
2023 overhead and fragmentation by moving allocated regions around whenever it
2024 needs to. You always refer to a ralloc'd region with a "handle" (a
2025 pointer to a pointer--an object of type `void **').
2027 * There is a new `printf' format: `%m' gives you the string corresponding
2028 to the error code in `errno'.
2030 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2031 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2032 pass, the `a' modifier says to fill in a `char **' you pass with a
2035 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2036 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2037 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2039 * `mkstemp' is a traditional Unix function to atomically create and open a
2040 uniquely-named temporary file.
2044 * The standard location for the file that says what the local timezone is
2045 has changed again. It is now `/usr/local/etc/localtime' (or more
2046 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2048 * The distribution no longer contains any files with names longer than 14
2051 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2052 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2054 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2058 * The configuration process has changed quite a bit. The `configure'
2059 script is now used just like the configuration scripts for other GNU
2060 packages. The `sysdeps' directory hierarchy is much rearranged.
2061 The file `INSTALL' explains the new scheme in detail.
2063 * The header files no longer need to be processed into ANSI C and
2064 traditional C versions. There is just one set of files to install, and
2065 it will work with ANSI or old C compilers (including `gcc -traditional').
2067 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2068 MIPS DECStation running Ultrix 4.
2070 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2071 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2072 made itself into a shared library.
2074 * Yet further improved support for the i386, running 4.3 BSD-like systems
2075 (such as Mach 3 with the Unix single-server), or System V.
2077 * New function `strncasecmp' to do case-insensitive string comparison
2078 with limited length.
2080 * New function `strsep' is a reentrant alternative to `strtok'.
2082 * New functions `scandir' and `alphasort' for searching directories.
2084 * New function `setenv' is a better interface to `putenv'.
2086 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2087 function for traversing a directory tree.
2089 * The GNU obstack package is now also part of the C library.
2090 The new function `open_obstack_stream' creates a stdio stream that
2091 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2092 formatted output directly to an obstack.
2094 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2095 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2097 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2099 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2100 things to your strings.
2102 * There are some new test programs: test-fseek, testmb, and testrand.
2104 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2105 These ports are not finished, but are a good starting place for really
2106 supporting those systems.
2108 * `/etc/localtime' is now the standard location for the file that says what
2109 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2110 This follows the general principle that `/etc' is the place for all local
2111 configuration files.
2113 * The C library header files now use `extern "C"' when used by the C++
2114 compiler, so the C library should now work with C++ code.
2116 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2117 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2120 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2121 function which uses the `merge sort' algorithm, and is said to be
2122 significantly faster than the old GNU `qsort' function. Merge sort is
2123 now the standard `qsort' function. The new algorithm can require a lot
2124 of temporary storage; so, the old sorting function is called when the
2125 required storage is not available.
2127 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2128 provides the Unix `crypt' function, plus some other entry points.
2130 * The code and header files taken from 4.4 BSD have been updated with the
2131 latest files released from Berkeley.
2133 ----------------------------------------------------------------------
2134 Copyright information:
2136 Copyright (C) 1992-2012 Free Software Foundation, Inc.
2138 Permission is granted to anyone to make or distribute verbatim copies
2139 of this document as received, in any medium, provided that the
2140 copyright notice and this permission notice are preserved,
2141 thus giving the recipient permission to redistribute in turn.
2143 Permission is granted to distribute modified versions
2144 of this document, or of portions of it,
2145 under the above conditions, provided also that they
2146 carry prominent notices stating who last changed them.
2149 version-control: never
projects / platform / upstream / glibc.git / blob