1 GNU C Library NEWS -- history of user-visible changes. 2012-1-27
2 Copyright (C) 1992-2009, 2010, 2011, 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:
12 174, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550, 2551,
13 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678, 3335,
14 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596, 4822,
15 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794, 6884,
16 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135, 10140,
17 10153, 10210, 10254, 10346, 10545, 10716, 11174, 11322, 11365, 11451,
18 11494, 11521, 11837, 11959, 12047, 12340, 13058, 13525, 13526, 13527,
19 13528, 13529, 13530, 13531, 13532, 13533, 13547, 13551, 13552, 13553,
20 13555, 13559, 13563, 13566, 13583, 13592, 13618, 13637, 13656, 13658,
21 13673, 13691, 13695, 13704, 13705, 13706, 13726, 13738, 13739, 13758,
22 13760, 13761, 13775, 13786, 13787, 13792, 13806, 13824, 13840, 13841,
23 13844, 13846, 13851, 13852, 13854, 13871, 13872, 13873, 13879, 13883,
24 13884, 13885, 13886, 13892, 13895, 13908, 13910, 13911, 13912, 13913,
25 13914, 13915, 13916, 13917, 13918, 13919, 13920, 13921, 13922, 13923,
26 13924, 13926, 13927, 13928, 13938, 13941, 13942, 13954, 13955, 13956,
27 13963, 13967, 13970, 13973, 13979, 13983, 14012, 14027, 14033, 14034,
28 14040, 14049, 14053, 14055, 14064, 14080, 14083
32 + define static_assert
36 + declare at_quick_exit and quick_exit also for ISO C11
38 + aligned_alloc. NB: The code is deliberately allows the size parameter
39 to not be a multiple of the alignment. This is a moronic requirement
40 in the standard but it is only a requirement on the caller, not the
45 + uchar.h support added
47 + CMPLX, CMPLXF, CMPLXL added
49 Implemented by Ulrich Drepper.
51 * Support for the IA-64 has been moved to ports.
53 * Remove support for anything but ELF binary format
55 * Checking versions of poll, ppoll added.
56 Implemented by Ulrich Drepper.
58 * More generic and 64-bit performance optimizations to math functions.
59 Implemented by Ulrich Drepper.
61 * New configure option --enable-obsolete-rpc makes the deprecated RPC
62 headers and functions available at compile time as they were before
63 version 2.14. This option will be removed at some time in the future
64 after the TI-RPC library becomes fully sufficient for the needs of
65 existing applications.
69 * The following bugs are resolved with this release:
71 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
72 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
73 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
74 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
75 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
76 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
77 13484, 13506, 13515, 13523, 13524, 13538, 13540
79 * New program pldd to list loaded object of a process
80 Implemented by Ulrich Drepper.
82 * Add nss_db support back to glibc. No more dependency on Berkeley db
83 and support for initgroups lookups.
84 Implemented by Ulrich Drepper.
86 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
89 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
92 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
94 Contributed by Liubov Dmitrieva.
96 * Optimized strchr and strrchr for SSE on x86-32.
97 Contributed by Liubov Dmitrieva.
99 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
100 for x86-64 and x86-32.
101 Contributed by Liubov Dmitrieva.
103 * New interfaces: scandirat, scandirat64
104 Implemented by Ulrich Drepper.
106 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
107 Implemented by Ulrich Drepper.
109 * nscd now also caches the netgroup database.
110 Implemented by Ulrich Drepper.
112 * Integrate libm with gcc's -ffinite-math-only option.
113 Implemented by Ulrich Drepper.
115 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
116 to math functions. Implemented by Ulrich Drepper.
118 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
119 Implemented by Ulrich Drepper.
121 * New Linux interfaces: process_vm_readv, process_vm_writev
123 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
124 Implemented by Ulrich Drepper.
126 * Optimized nearbyint and strcasecmp for PPC.
127 Implemented by Adhemerval Zanella.
129 * New locales: bho_IN, unm_US, es_CU, ta_LK
133 * The following bugs are resolved with this release:
135 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
136 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
137 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
138 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
139 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
140 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
141 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
142 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
143 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
144 12795, 12811, 12813, 12814, 12841
146 * The RPC implementation in libc is obsoleted. Old programs keep working
147 but new programs cannot be linked with the routines in libc anymore.
148 Programs in need of RPC functionality must be linked against TI-RPC.
149 The TI-RPC implementation is IPv6 enabled and there are other benefits.
151 Visible changes of this change include (obviously) the inability to link
152 programs using RPC functions without referencing the TI-RPC library and the
153 removal of the RPC headers from the glibc headers.
154 Implemented by Ulrich Drepper.
156 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
157 syncfs, setns, sendmmsg
159 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
160 yue_HK, lij_IT, mhr_RU
162 * New encodings: CP770, CP771, CP772, CP773, CP774
164 * New program sotruss to trace calls through PLTs
165 Implemented by Ulrich Drepper.
167 * The malloc hook implementation is marked deprecated and will be removed
168 from the default implementation in the next version. The design never
169 worked ever since the introduction of threads. Even programs which do
170 not create threads themselves can use multiple threads created internally.
174 * The following bugs are resolved with this release:
176 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
177 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
178 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
179 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
182 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
184 * POWER7 optimizations: memset, memcmp, strncmp
186 * New optimized string functions for x86-64: strnlen (SSE2),
187 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
188 Implemented by Ulrich Drepper.
192 * The following bugs are resolved with this release:
194 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
195 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
196 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
197 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
198 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
199 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
200 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
201 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
203 * New interfaces: pthread_getname_np, pthread_setname_np
205 * New Linux interface: recvmmsg
207 * STT_GNU_IFUNC implemented for Sparc by David Miller.
209 * The dynamic linker now recognizes supported ABI versions from the
210 EI_ABIVERSION field in the ELF header.
211 Implemented by Ulrich Drepper.
213 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
214 will not be used to fill in password fields in the passwd.byname replies.
215 Instead it is used to synthesize the shadow.byname table, should it be
216 missing. This is a useful mode in some installations involving Solaris.
217 Implemented by Ulrich Drepper.
219 * New locales: kok_IN, sq_MK, cv_RU
223 * The following bugs are resolved with this release:
225 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
226 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
227 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
228 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
229 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
230 10789, 10817, 10823, 10840, 10847
232 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
234 Implemented by Ulrich Drepper.
236 * Checking version of longjmp added that fails if an uninitialized stack
237 frame would be created. Implemented by Ulrich Drepper.
239 * STT_GNU_IFUNC is now supported in static executables.
240 Implemented by H.J. Lu.
242 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
244 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
245 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
246 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
247 Contributed by H.J. Lu.
249 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
250 Implemented by Ulrich Drepper.
252 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
254 Contributed by H.J. Lu.
256 * Support for fma instruction in AVX on x86-64.
257 Implemented by H.J. Lu and Ulrich Drepper.
259 * AVX support in x86-64 auditing support in ld.so.
260 Implemented by H.J. Lu.
262 * STB_GNU_UNIQUE support added.
263 Implemented by Ulrich Drepper.
265 * Implement second fallback mode for optimized DNS lookup for even more
266 broken environments. If two requests from the same port are not
267 handled correctly close the socket and open a new one before sending
268 the second request. The 'single-request-reopen' option in /etc/resolv.conf
269 can be used to select this mode right away, instead of rediscovering the
270 necessity is every process again.
271 Implemented by Ulrich Drepper.
273 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
274 Implemented by Adam Tkac.
276 * Optimized iconv conversions for S390x.
277 Implemented by Andreas Krebbel.
279 * Using condvars with PI mutexes is now more efficient due to kernel
280 support for requeueing to PI futexes. NPTL support added for x86-64.
281 Implemented by Ulrich Drepper.
283 * New locales: ps_AF, my_MM
287 * The following bugs are resolved with this release:
289 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
290 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
291 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
292 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
293 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
295 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
296 Implemented by Ulrich Drepper.
298 * New Linux interfaces: accept4, fallocate, fallocate64.
299 Implemented by Ulrich Drepper.
301 * Correct declarations of string function when used in C++ code. This
302 could lead to compile errors for invalid C++ code.
304 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
307 * New POSIX 2008 interface: psiginfo
308 Implemented by Ulrich Drepper.
310 * New ISO C++1x interfaces: quick_exit, at_quick_exit
311 Implemented by Ulrich Drepper.
313 * Support for selecting between multiple function definitions at runtime
314 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
316 * The libcrypt library can now use the hash function implementations in
317 NSS. Implemented by Ulrich Drepper.
319 * The malloc implementation can be compiled to be less memory efficient
320 but higher performing in multi-threaded programs.
321 Implemented by Ulrich Drepper.
323 * New locales: nan_TW@latin, ks_IN
325 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
326 Implemented by Ulrich Drepper.
328 * Extended printf hook support. It is possible to use user-defined types
329 and extend existing format specifiers.
330 Implemented by Ulrich Drepper.
332 * Handling for group shadow files has been added.
333 Implemented by Ulrich Drepper.
335 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
336 servers (the case, e.g., for some people using the built-in DNS
337 server in ADSL modems/routers). There is a once-per-process timeout
338 in case of a broken server. To avoid it, users can run nscd or put
339 'options single-request' in /etc/resolv.conf.
340 Implemented by Ulrich Drepper.
344 * The following bugs are resolved with this release:
346 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
347 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
348 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
349 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
350 6968, 6974, 6980, 6995, 7008, 7009, 7029
352 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
353 up at the same time. Implemented by Ulrich Drepper.
355 * TLS descriptors for LD and GD on x86 and x86-64.
356 Implemented by Alexandre Oliva.
358 * getaddrinfo now handles DCCP and UDPlite.
359 Implemented by Ulrich Drepper.
361 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
362 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
363 Implemented by Ulrich Drepper.
365 * New implementation of memmem, strstr, and strcasestr which is O(n).
366 Implemented by Eric Blake.
368 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
370 * Implement "e" option for popen to open file descriptor with the
371 close-on-exec flag set. Implemented by Ulrich Drepper.
373 * Implement "b" mode for fmemopen. In this mode writes writes don't
374 implicitly add a NUL byte and seeks from the end of the buffer really
375 use the buffer end, not the string length as the basis.
376 Implemented by Ulrich Drepper.
378 * Many functions, exported and internal, now atomically set the close-on-exec
379 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
381 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
383 Implemented by Pravin Satpute.
385 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
389 * The following bugs are resolved with this release:
391 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
392 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
393 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
394 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
395 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
396 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
397 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
399 * New locales: bo_CN, bo_IN, shs_CA.
401 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
403 * Sorting rules for some Indian languages (Devanagari and Gujarati).
404 Implemented by Pravin Satpute.
406 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
408 * nscd caches now all timeouts for DNS entries
409 Implemented by Ulrich Drepper.
411 * nscd is more efficient and wakes up less often.
412 Implemented by Ulrich Drepper.
414 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
415 vdprintf, and obstack_vprintf.
416 Implemented by Jakub Jelinek.
418 * Faster memset for x86-64.
419 Implemented by Harsha Jagasia and H.J. Lu.
421 * Faster memcpy on x86.
422 Implemented by Ulrich Drepper.
424 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
425 Implemented by Ulrich Drepper.
427 * Faster sqrt and sqrtf implemention for some PPC variants.
428 Implemented by Stephen Munroe.
432 * The following bugs are resolved with this release:
434 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
435 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
436 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
437 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
438 5071, 5103, 5104, 5112, 5113, 5184, 5186
440 * More checking functions: fread, fread_unlocked, open*, mq_open.
441 Implemented by Jakub Jelinek and Ulrich Drepper.
443 * Extend fortification to C++. Implemented by Jakub Jelinek.
445 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
446 by not recognizing 'a' as a modifier when those specs are requested.
447 Implemented by Jakub Jelinek.
449 * PPC optimizations to math and string functions.
450 Implemented by Steven Munroe.
452 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
453 options to be passed. Implemented by Ulrich Drepper.
455 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
457 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
458 Implemented by Ulrich Drepper.
460 * Handle private futexes in the NPTL implementation.
461 Implemented by Jakub Jelinek and Ulrich Drepper.
463 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
464 Implemented by Roland McGrath and Ulrich Drepper.
466 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
468 * SHA-256 and SHA-512 based password encryption.
469 Implemented by Ulrich Drepper.
471 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
472 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
475 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
476 Implemented by Ulrich Drepper.
480 * The following bugs are resolved with this release:
482 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
483 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
484 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
485 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
486 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
487 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
488 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
491 * New Linux interfaces: epoll_pwait, sched_getcpu.
493 * New generic interfaces: strerror_l.
495 * nscd can now cache the services database. Implemented by Ulrich Drepper.
499 * The following bugs are resolved with this release:
501 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
502 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
503 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
504 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
505 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
506 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
507 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
508 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
509 3225, 3251, 3252, 3253, 3273
511 * For Linux, the sorting of addresses returned by getaddrinfo now also
512 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
513 Implemented by Ulrich Drepper.
515 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
516 Implemented by Ulrich Drepper.
518 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
520 * New iconv module for MIK. Contributed by Alexander Shopov.
522 * For sites with broken group and/or passwd database, the auto-propagate
523 option of nscd can prevent creating ID lookup entries from the results
524 of a name lookup and vice versa. This usually is no problem but some
525 site might have problems with the default behavior.
526 Implemented by Ulrich Drepper.
528 * Iterating over entire database in NIS can be slow. With the
529 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
530 to trade time for memory. The entire database will be read at once.
531 Implemented by Ulrich Drepper.
533 * The interfaces introduced in RFC 3542 have been implemented by
536 * Support for the new ELF hash table format was added by Ulrich Drepper.
538 * Support for priority inheritance mutexes added by Jakub Jelinek and
541 * Support for priority protected mutexes added by Jakub Jelinek.
543 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
544 or_IN, csb_PL, fy_NL, sr_ME.
548 * More overflow detection functions.
550 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
551 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
553 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
554 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
555 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
556 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
557 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
558 by Masahide Washizawa.
560 * It is now possible to install audit libraries for the dynamic linker using
561 LD_AUDIT. Implemented by Ulrich Drepper.
563 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
564 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
565 For a libc and libpthread that works well on Linux 2.4 kernels, we
566 recommend using the stable 2.3 branch.
568 * The new function open_wmemstream acts like open_memstream,
569 but uses a wchar_t wide character buffer.
571 * The new function ppoll is an improved version of poll, similar to pselect.
573 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
574 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
575 renameat, unlinkat, linkat, symlinkat, readlinkat.
577 * New Linux kernel system calls: unshare,
578 inotify_init, inotify_add_watch, inotify_rm_watch.
580 * The euidaccess function is now also known by the alias eaccess,
581 for compatibility with some other systems.
583 * Timezone data updated to 2006b version.
587 * The following bugs are resolved with this release:
589 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
590 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
591 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
592 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
593 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
594 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
596 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
598 * As of this release, GCC 4 can be used to compile the C Library.
600 * Timezone data updated to 2005m version.
604 * The following bugs are resolved with this release:
606 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
607 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
608 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
609 777, 787, 821, 822, 823, 825
611 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
615 * Support for RFC 3678. Real implementations exist only for Linux so far.
616 Implemented by Ulrich Drepper.
618 * nscd can now cache entries persistently. Expiring entries are reloaded.
619 For speedups the cache can be shared in memory with client processes.
620 Implemented by Ulrich Drepper.
622 * nscd can now perform SELinux checks.
623 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
625 * getaddrinfo queries are now cached. Canonical name lookup is performed
627 Implemented by Ulrich Drepper.
629 * The nothrow function attribute is used when headers are used by gcc when
630 compiling C code. This can avoid significant amounts of exception
633 * The malloc functions perform more error checking and are stricter when
634 it comes to reacting on errors. The default action is to terminate
635 the process after showing an error message. Implemented by Ulrich Drepper.
637 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
638 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
640 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
641 namespaces using the new function dlmopen(). This feature is of course,
642 like most other dynamic loading functionality, not available in statically
643 linked applications. Implemented by Ulrich Drepper.
645 * Low-overhead boundary checking variants of string and some stdio functions
646 were added. These are to be used in conjunction with a gcc patch by
647 Jakub Jelinek which adds calls to these functions if possible.
648 Implemented by Jakub Jelinek and Ulrich Drepper.
650 * Old code for several operating systems and machine architectures that
651 have not been in working condition in a long time have been removed from
652 the main source tree maintained by the GNU C Library's maintainers.
653 These files are now reside in the separate `ports' source module
654 that is usable as an add-on when building the library.
658 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
659 interrogate the dynamic linker, compatible with the Solaris interface.
661 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
662 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
664 * getifaddrs now uses the netlink interface on Linux to get its information.
665 Implemented by Thorsten Kukuk.
667 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
668 Implemented by Ulrich Drepper.
670 * support for non-executable stacks on x86 has been added. Changes mostly
673 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
676 * getaddrinfo now performs destination address selection according to
681 * Thread-safe interfaces for many functions that access locale data
682 were added in version 2.3, but these features were omitted from NEWS.
683 Many functions have variants with an `_l' suffix that take a `locale_t'
684 object as a parameter rather than consulting the current locale.
685 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
686 create and maintain `locale_t' objects. Additionally, the new function
687 `uselocale' sets "the current locale" (as used by functions not so
688 parameterized) set for an individual thread. These features were added
689 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
691 * The functions getresuid, getresgid, setresuid, and setresgid, which
692 have long been available on Linux, are now declared in <unistd.h>
693 and are now also available on the Hurd.
695 * ELF thread-local storage support (TLS) now works on x86-64.
697 * The new dynamic string token $LIB is expanded in shared library names.
698 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
700 * Aldy Hernandez contributed complete software floating point support for
701 PowerPC machines with no FPU.
703 * fexecve is implemented on Linux.
705 * The `btowc' function should work at least twice as fast due to
706 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
708 * With approriate thread add-ons cancelable functions are now implemented
709 in libc.so as well. No need to call the function in libpthread. This
710 change allowed to finally disable the incorrect and expensive handling
711 of weak definition in ld.so.
713 * Yet more PLT entries in libc.so have been removed. We finally arrived
714 at the bare minimum. Startup times improved appropriately.
716 * Support for the new Linux/x86 system call interface was added. The
717 AT_SYSINFO auxiliary vector entry is recognized and handled.
721 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
724 * iconv (the program and the interface) now accepts empty names (excluding
725 options like //TRANSLIT) to mean "use charset of current locale".
727 * localedef can now transliterate characters in strings which are not in
728 the provided charmap. The information from the input locale is used.
730 * Prelinking support was added for ELF targets. This requires additional
731 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
733 * Read-only stdio streams now use mmap to speed up operation by eliminating
734 copying and buffer underflows. To use add 'm' to the mode string of
735 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
737 * The malloc functions were completely rewritten by Wolfram Gloger based
738 on Doug Lea's malloc-2.7.0.c.
740 * Isamu Hasegawa contributed a completely new and POSIX-conformant
741 implementation of regex.
743 * Bruno Haible upgraded the iconv and locale implementation to support
746 * Contents of the LC_* and LANG environment variables in the CEN style are
747 not recognized anymore. It never was used. Change by Ulrich Drepper.
749 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
750 thread-local storage (TLS) ABI on some platforms.
751 Changes by Ulrich Drepper. SH support by Kaz Kojima.
753 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
754 EUC-JISX0213, and TSCII.
756 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
757 BSD-compatible interface for getting all network interface addresses.
758 Implementation for IPv4 by Roland McGrath.
760 * Loading of locale data is faster due to the introduction of a locale
761 archive. Implemented by Roland McGrath and Ulrich Drepper.
763 * Startup times are significantly reduced by not using exported functions
764 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
767 * Steven Munroe contributed a port to PowerPC64/Linux.
771 * The Hurd now uses the GNU libio implementation of stdio rather than the
772 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
774 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
775 with the same behavior as the Linux system call of the same name.
779 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
780 128-bit long double format.
782 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
783 IBM1161, and IBM1162 charsets.
785 * Andreas Jaeger contributed a port to x86-64/Linux.
787 * Peter Bruin contributed a port to PowerPC/Hurd.
789 * libc functions using I/O streams now can handle wide-oriented streams
792 * optimizations in the dynamic linker. Binaries created by recent binutils
793 versions start up quicker due to reduced time spent on relocations.
795 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
799 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
800 asinh, atanh, j0 for the 128-bit long double format.
802 * Bruno Haible updated all the code handling Unicode in some form to
805 * Speed of regex for single-byte locales is back to previous levels.
806 Patch by Isamu Hasegawa.
808 * Alpha, SPARC, and IA-64 now also using floating stacks.
810 * Startup time of internationalized applications greatly improved through
811 iconv cache. Use iconvconfig to generate the cache file.
812 Contributed by Ulrich Drepper.
814 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
815 severe performance problems. Patch by David Mosberger.
817 * The Hurd port got a lot more functionality like AIO, various stdio
818 extensions, etc. Mainly done by Roland McGrath.
820 * mtrace can now lookup symbols in shared libraries.
824 * Intel's IA-64 math library is largely integrated. It provides fast and
825 accurate implementatations for most basic and standard math functions
826 in float, double, and long double format.
828 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
829 and asin for the 96-bit long double format and asin, log, tan for the
830 128-bit long double format.
832 * The beginning of a last-bit accurate math library by IBM Haifa were added.
833 The basic double functions exist today. Contributed by Abraham Ziv
834 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
835 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
837 * An asynchronous name lookup library was added. The interface is designed
838 after POSIX AIO. The proposal was circulated beforehand to get comments.
839 No negative ones came in. Implemented by Ulrich Drepper.
841 * Port to S390/64bit contributed by Martin Schwidefsky
842 <schwidefsky@de.ibm.com>.
844 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
845 of functions for Linux/IA-64.
847 * The RPC code is now thread safe. Threads can now use the same service
848 of different services at the same time. Patch by Eric Norum
849 <eric.norum@usask.ca> with some help by Ulrich Drepper.
851 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
852 family of functions for Linux/S390.
854 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
855 of functions for Linux/x86.
857 * Port to Linux/CRIS contributed by Axis Communications.
861 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
862 we can now check for namespace violations and missing declarations. The
863 result is that almost all headers are now Unix-compliant (as defined in
864 the upcoming XPG6). The negative side is that some programs might need
865 corrections, too, if they depend on the incorrect form of the headers in
866 previous versions which defined too many symbols and included too many
869 * regex now handles multibyte character sets correctly.
870 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
872 * iconv (the program) does now conform to the upcoming XPG6 and handles
873 charmaps. Instead of the charset names the path of charmaps can be
874 provided and the conversion happens based on this data.
875 Contributed by Ulrich Drepper.
877 * The locale program now provides detailed information about the installed
882 only lists the names of the supported locales
886 provides details such as country, language, and codeset name.
887 Contributed by Ulrich Drepper.
891 * The gencat program now parses the input file according to the charset
892 selected by the LC_CTYPE category. This is important for stateful
893 character sets. To make generating catalogs easier there is a way
894 to overwrite the charset selected by the locale: before the first
895 message or $ quote line the catalog can contain a line like
899 to select the charset (ISO-8859-2 in this case).
901 Implemented by Shinya Hanataka and Ulrich Drepper.
903 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
904 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
905 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
907 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
908 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
910 * The LANGUAGE environment variable is now ignored unless the locale is
911 changed from the default "C" locale.
913 * The usual bug fixes.
917 * Greg McGary added runtime support for bounds checking using gcc's
918 new -fbounded-pointers option. ix86 target is complete. PowerPC
921 * Thorsten Kukuk added secure mode support to nscd.
923 * The Berkeley db libraries have been removed.
925 Related, the nss_db module is now in a separate package since it
926 obviously requires a database library being available.
928 * Wide character I/O streams implemented by Ulrich Drepper.
930 * Functions from the extended socket API added by Ulrich Drepper.
932 * Functions feenableexcept and fedisableexcept to control the
933 behaviour of individual exceptions have been added by Andreas Jaeger.
935 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
937 * The resolver code has been updated from bind 8.2.3-T5B which supports
938 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
941 This change could in some situations effect backward compatibility. Since
942 now `_res' is a thread-local instead of a global variable, modifying it
943 in one thread does not have any effect in other threads.
945 The resolver library was also extended to allow IPv6 as the transport
946 protocol for the requests. This work was done by Stig Venaas.
948 * Compatibility code for K&R C compilers has been removed from the
949 header files. A ISO C compiler is needed to use the library
950 (conforming to either C89 or C99 standard).
952 * Complete rewrite of the localedef program to support multibyte character
953 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
954 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
955 Implemented by Ulrich Drepper.
957 Bruno Haible significantly improved the generation and use of the data
958 structures for the wide character tables.
960 * Plural handling in gettext implemented by Ulrich Drepper.
962 * The utmp daemon has been removed.
964 * The port to MIPS-Linux has been finished by Andreas Jaeger.
966 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
969 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
971 * POSIX barriers implemented by Kaz Kylheku.
973 * POSIX spawn function family implemented by Ulrich Drepper.
975 * POSIX spinlocks are now available.
977 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
979 * the configure option --enable-kernel=X.Y.Z allows to strip out
980 compatibility for kernel versions before X.Y.Z. This is currently only
981 implemented for Linux.
983 * the sockaddr_in6 structure changed. The IPv6 working group added a new
984 field sin6_scope_id. This means that all programs using IPv6 should be
985 recompiled. Don't expect binary compatibility with previous glibc
988 * various conversion modules for IBM character sets contributed by
991 * IA-64 port by Jes Sorensen and HJ Lu.
1005 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1007 * New xdr functions are added; some rpc functions are now 64bit clean.
1009 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1011 * Fixed known incompatibilities with glibc 2.0.
1013 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1015 * Optimized a number of functions (especially the ELF dynamic loader).
1017 * Update timezone data files.
1019 * lots of charmaps corrections
1021 * some new locale definitions and charmaps
1026 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1027 conform to POSIX member type requirements. Symbol versions have been
1028 adjusted as needed within the library, and for direct use by applications,
1029 but there is potential for problems if third-party libraries use
1030 struct timeval as part of their interface. This does not present
1031 a problem for X and other "essential" system libraries.
1033 * An additional locale model to support C++ Standard Library locale
1034 model and probably more was implemented by Ulrich Drepper.
1036 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1039 * Miles Bader provided the `argp' function family to support hierachical
1040 command line argument parsing, layered on top of getopt.
1042 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1044 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1047 * scanf recognizes the %a and %A format for scanning floating point numbers.
1049 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1050 information and interfaces for the available integer types.
1052 * about 130 new math functions were added to implement the ISO C9x math
1055 * the new header <complex.h> contains definitions of the complex math
1056 functions from ISO C 9X.
1058 * the new header <tgmath.h> defines generic macros to use complex or
1059 real valued functions.
1061 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1063 * Andreas Jaeger provided a test suite for the math library.
1065 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1067 * Ulrich Drepper added character set conversion functions (iconv).
1069 * Optimized string functions have been added.
1071 * The localedata addon is now part of glibc.
1073 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1075 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1076 daemon for NSS (nscd).
1078 Missing a better place here are some numbers on improvements. Under
1079 Linux 2.1.125 un-tar-ing the kernel sources takes
1083 using local files 12.19s 6.88s 22.91s
1085 using NIS 13.92s 8.91s 26.34s
1087 using NIS & nscd 10.37s 7.34s 25.30s
1089 using NIS+ 27.57s 30.37s 640.46s
1091 using NIS+ & nscd 10.25s 7.83s 26.51s
1093 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1095 Keep in mind that non-namelookup related operations dominate above times.
1096 It was just a common complain that using NIS+ unpacking the kernel is
1099 [1] The old nscd implementation is not available anymore since it was
1100 distributed with glibc up to version 2.0.98 and thus is now replaced.
1102 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1104 * Mark Kettenis provided a Hesiod NSS module.
1106 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1107 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1109 * rcmd can now handle netgroups (Dick Streefland).
1111 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1114 * Support for the IPv6 protocol has been added to the socket API, as per the
1115 latest draft standards.
1117 * Support for Linux 2.2 has been added.
1119 * Interface changes relative to the latest 2.0.x release:
1120 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1121 addseverity NEW: Unix98
1122 alphasort64 NEW: LFS
1123 argp_err_exit_status NEW: argp, GNU ext
1124 argp_error NEW: argp, GNU ext
1125 argp_failure NEW: argp, GNU ext
1126 argp_help NEW: argp, GNU ext
1127 argp_parse NEW: argp, GNU ext
1128 argp_program_bug_address NEW: argp, GNU ext
1129 argp_program_version NEW: argp, GNU ext
1130 argp_program_version_hook NEW: argp, GNU ext
1131 argp_state_help NEW: argp, GNU ext
1132 argp_usage NEW: argp, GNU ext
1133 authdes_create NEW: Secure RPC
1134 authdes_getucred NEW: Secure RPC
1135 authdes_pk_create NEW: Secure RPC
1136 backtrace NEW: GNU ext.
1137 backtrace_symbols NEW: GNU ext.
1138 backtrace_symbols_fd NEW: GNU ext.
1140 cacosf NEW: ISO C 9x
1141 cacosh NEW: ISO C 9x
1142 cacoshf NEW: ISO C 9x
1143 cacoshl NEW: ISO C 9x
1144 cacosl NEW: ISO C 9x
1151 casinf NEW: ISO C 9x
1152 casinh NEW: ISO C 9x
1153 casinhf NEW: ISO C 9x
1154 casinhl NEW: ISO C 9x
1155 casinl NEW: ISO C 9x
1157 catanf NEW: ISO C 9x
1158 catanh NEW: ISO C 9x
1159 catanhf NEW: ISO C 9x
1160 catanhl NEW: ISO C 9x
1161 catanl NEW: ISO C 9x
1162 cbc_crypt NEW: Secure RPC
1166 ccoshf NEW: ISO C 9x
1167 ccoshl NEW: ISO C 9x
1173 cimagf NEW: ISO C 9x
1174 cimagl NEW: ISO C 9x
1175 clearerr_locked REMOVED
1176 clntunix_create NEW: sunrpc ext
1178 clog10 NEW: ISO C 9x
1179 clog10f NEW: ISO C 9x
1180 clog10l NEW: ISO C 9x
1190 cprojf NEW: ISO C 9x
1191 cprojl NEW: ISO C 9x
1193 crealf NEW: ISO C 9x
1194 creall NEW: ISO C 9x
1199 csinhf NEW: ISO C 9x
1200 csinhl NEW: ISO C 9x
1203 csqrtf NEW: ISO C 9x
1204 csqrtl NEW: ISO C 9x
1208 ctanhf NEW: ISO C 9x
1209 ctanhl NEW: ISO C 9x
1211 des_setparity NEW: Secure RPC
1212 ecb_crypt NEW: Secure RPC
1213 endutxent NEW: Unix98
1215 exp10f NEW: ISO C 9x
1216 exp10l NEW: ISO C 9x
1220 fattach NEW: STREAMS
1221 fdetach NEW: STREAMS
1225 feclearexcept NEW: ISO C 9x
1226 fegetenv NEW: ISO C 9x
1227 fegetexceptflag NEW: ISO C 9x
1228 fegetround NEW: ISO C 9x
1229 feholdexcept NEW: ISO C 9x
1231 feraiseexcept NEW: ISO C 9x
1232 ferror_locked REMOVED
1233 fesetenv NEW: ISO C 9x
1234 fesetexceptflag NEW: ISO C 9x
1235 fesetround NEW: ISO C 9x
1236 fetestexcept NEW: ISO C 9x
1237 feupdateenv NEW: ISO C 9x
1238 fflush_locked REMOVED
1242 fgets_unlocked NEW: GNU ext.
1243 fileno_locked REMOVED
1255 fputc_locked REMOVED
1256 fputs_unlocked NEW: GNU ext.
1257 fread_unlocked NEW: GNU ext.
1262 fstatvfs NEW: Unix98
1266 ftruncate64 NEW: LFS
1268 fwrite_unlocked NEW: GNU ext.
1269 gai_strerror NEW: IPv6
1273 getchar_locked REMOVED
1275 getdate_err NEW: Unix98
1276 getdate_r NEW: GNU ext.
1278 getnameinfo NEW: IPv6
1279 getnetname NEW: Secure RPC
1280 getpmsg NEW: STREAMS
1281 getpt NEW: Unix98 PTY
1282 getrlimit64 NEW: LFS
1283 getutxent NEW: Unix98
1284 getutxid NEW: Unix98
1285 getutxline NEW: Unix98
1286 glob64 NEW: GNU ext.
1287 globfree64 NEW: GNU ext.
1288 gnu_get_libc_release NEW: GNU ext.
1289 gnu_get_libc_version NEW: GNU ext.
1290 grantpt NEW: Unix98 PTY
1291 host2netname NEW: Secure RPC
1293 iconv_close NEW: iconv
1294 iconv_open NEW: iconv
1295 if_freenameindex NEW: IPv6
1296 if_indextoname NEW: IPv6
1297 if_nameindex NEW: IPv6
1298 if_nametoindex NEW: IPv6
1299 in6addr_any NEW: IPv6
1300 in6addr_loopback NEW: IPv6
1301 inet6_isipv4mapped NEW: IPv6
1302 isastream NEW: STREAMS
1303 iswblank NEW: GNU ext.
1304 key_decryptsession NEW: Secure RPC
1305 key_decryptsession_pk NEW: Secure RPC
1306 key_encryptsession NEW: Secure RPC
1307 key_encryptsession_pk NEW: Secure RPC
1308 key_gendes NEW: Secure RPC
1309 key_get_conv NEW: Secure RPC
1310 key_secretkey_is_set NEW: Secure RPC
1311 key_setnet NEW: Secure RPC
1312 key_setsecret NEW: Secure RPC
1313 llrint NEW: ISO C 9x
1314 llrintf NEW: ISO C 9x
1315 llrintl NEW: ISO C 9x
1316 llround NEW: ISO C 9x
1317 llroundf NEW: ISO C 9x
1318 llroundl NEW: ISO C 9x
1323 lrintf NEW: ISO C 9x
1324 lrintl NEW: ISO C 9x
1325 lround NEW: ISO C 9x
1326 lroundf NEW: ISO C 9x
1327 lroundl NEW: ISO C 9x
1329 makecontext NEW: Unix98
1330 mempcpy NEW: GNU ext.
1333 modify_ldt NEW: kernel
1337 nearbyint NEW: ISO C 9x
1338 nearbyintf NEW: ISO C 9x
1339 nearbyintl NEW: ISO C 9x
1340 netname2host NEW: Secure RPC
1341 netname2user NEW: Secure RPC
1342 nexttoward NEW: ISO C 9x
1343 nexttowardf NEW: ISO C 9x
1344 nexttowardl NEW: ISO C 9x
1348 passwd2des NEW: Secure RPC
1350 pow10f NEW: GNU ext.
1351 pow10l NEW: GNU ext.
1354 printf_size NEW: GNU ext.
1355 printf_size_info NEW: GNU ext.
1356 profil_counter REMOVED
1357 pthread_mutexattr_getkind_np REPLACED
1358 pthread_mutexattr_setkind_np REPLACED
1359 ptsname NEW: Unix98 PTY
1360 ptsname_r NEW: Unix98 PTY
1362 putchar_locked REMOVED
1363 putgrent NEW: GNU ext.
1365 putpmsg NEW: STREAMS
1366 pututxline NEW: Unix98
1370 readdir64_r NEW: LFS
1371 remquo NEW: ISO C 9x
1372 remquof NEW: ISO C 9x
1373 remquol NEW: ISO C 9x
1375 roundf NEW: ISO C 9x
1376 roundl NEW: ISO C 9x
1378 scalbln NEW: ISO C 9x
1379 scalblnf NEW: ISO C 9x
1380 scalblnl NEW: ISO C 9x
1382 sendfile NEW: kernel
1383 setcontext NEW: Unix98
1384 setrlimit64 NEW: LFS
1385 setutxent NEW: Unix98
1387 sigignore NEW: Unix98
1388 sigqueue NEW: POSIX.1b
1389 sigrelse NEW: Unix98
1390 sigset NEW: POSIX.1b
1391 sigtimedwait NEW: POSIX.1b
1392 sigwaitinfo NEW: POSIX.1b
1393 sincos NEW: GNU ext.
1394 sincosf NEW: GNU ext.
1395 sincosl NEW: GNU ext.
1399 strcasestr NEW: GNU ext.
1400 strtoimax NEW: ISO C 9x
1401 strtoumax NEW: ISO C 9x
1402 strverscmp NEW: GNU ext.
1403 svcauthdes_stats NEW: Secure RPC
1404 svcunix_create NEW: sunrpc etx
1405 svcunixfd_create NEW: sunrpc ext
1406 swapcontext NEW: Unix98
1407 tcgetsid NEW: Unix98 PTY
1408 tdestroy NEW: GNU ext.
1409 tgamma NEW: ISO C 9x
1410 tgammaf NEW: ISO C 9x
1411 tgammal NEW: ISO C 9x
1415 truncf NEW: ISO C 9x
1416 truncl NEW: ISO C 9x
1418 unlockpt NEW: Unix98 PTY
1419 updwtmpx NEW: Unix98
1420 user2netname NEW: Secure RPC
1421 utmpxname NEW: Unix98
1422 versionsort NEW: GNU ext.
1423 versionsort64 NEW: GNU ext.
1425 wcscasecmp NEW: GNU ext.
1426 wcsncasecmp NEW: GNU ext.
1427 wcsnlen NEW: GNU ext.
1428 wcstoimax NEW: ISO C 9x
1429 wcstoll NEW: ISO C 9x
1430 wcstoull NEW: ISO C 9x
1431 wcstoumax NEW: ISO C 9x
1433 wordexp NEW: POSIX.2
1434 wordfree NEW: POSIX.2
1435 write_profiling REMOVED
1436 xdecrypt NEW: Secure RPC
1437 xdr_authdes_cred NEW: Secure RPC
1438 xdr_authdes_verf NEW: Secure RPC
1439 xdr_cryptkeyarg NEW: Secure RPC
1440 xdr_cryptkeyarg2 NEW: Secure RPC
1441 xdr_cryptkeyres NEW: Secure RPC
1442 xdr_getcredres NEW: Secure RPC
1443 xdr_key_netstarg NEW: Secure RPC
1444 xdr_key_netstres NEW: Secure RPC
1445 xdr_keybuf NEW: Secure RPC
1446 xdr_keystatus NEW: Secure RPC
1447 xdr_netnamestr NEW: Secure RPC
1448 xdr_sizeof NEW: Secure RPC
1449 xdr_unixcred NEW: sunrpc ext
1450 xencrypt NEW: Secure RPC
1451 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1462 * inet_ntoa is thread-safe
1464 * updwtmp is moved from libutil to libc
1466 * rewrite of cbrt function
1468 * update of timezone data
1482 * add atoll function
1484 * fix complex problems in Berkeley DB code
1486 * fix math functions
1490 * fixed lots of header problems (especially Linux/GNU specific)
1492 * dynamic loader preserves all registers
1494 * Roland McGrath provided support for handling of auxiliary objects in
1495 the ELF dynamic loader.
1497 * support for parallel builds is improved
1501 * GNU extensions are no longer declared by default. To enable them you
1502 must define the macro `_GNU_SOURCE' in your program or compile with
1505 * The library has changed from using GNU ld symbol aliases to using weak
1506 symbols where available. The ELF object file format supports weak
1507 symbols; GNU ld also supports weak symbols in the a.out format. (There
1508 is also now support for other GNU ld extensions in ELF. Use the
1509 `--with-elf' option to configure to indicate you have ELF, and
1510 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1511 of many files which contained only symbol aliases, reducing the size of
1512 the source and the compiled library; many other files were renamed to
1513 less cryptic names previously occupied by the symbol alias files.
1514 There is a new header file <elf.h> for programs which operate on
1515 files in the ELF format.
1517 * Converted to Autoconf version 2, so `configure' has more options.
1518 Run `configure --help' to see the details.
1520 * The library can now be configured to build profiling, highly-optimized
1521 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1522 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1523 `configure' enable building these extra libraries. The shared library is
1524 built by default when using both ELF and GNU ld. When shared libraries
1525 are enabled, the new library `-ldl' is available for arbitrary run-time
1526 loading of shared objects; its interface is defined in <dlfcn.h>. The
1527 new header file <link.h> gives access to the internals of the run-time
1528 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1529 application of same name on other systems and it provides information
1530 about dynamically linked binaries.
1532 * The C library now provides the run-time support code for profiling
1533 executables compiled with `-pg'. Programs can control the profiling code
1534 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1535 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1536 the support for this file format was contributed by David Mosberger-Tang.
1538 * The math code has been replaced with a math library based on fdlibm from
1539 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1540 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1541 functions. The math functions now reside in a separate library, so
1542 programs using them will need to use `-lm' their linking commands.
1544 * John C. Bowman contributed optimized ix87 assembler inline functions.
1546 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1547 mechanism similar to that found in Solaris 2. This is now used for the
1548 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1549 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1550 file controls what services are used for each individual database. This
1551 works by loading shared libraries with names specified in `nsswitch.conf',
1552 so service modules can be changed or added at any time without even
1553 relinking any program. Currently there are the file, db, and NIS based
1554 NSS services available.
1556 * The new functions `strtoq' and `strtouq' parse integer values from
1557 strings, like `strtol' and `strtoul', but they return `long long int' and
1558 `unsigned long long int' values, respectively (64-bit quantities).
1560 * The new functions `strtof' and `strtold' parse floating-point values from
1561 strings, like `strtod', but they return `float' and `long double' values,
1562 respectively (on some machines `double' and `long double' are the same).
1564 * Ulrich Drepper has contributed new implementations of the floating-point
1565 printing and reading code used in the `printf' family of functions and
1566 `strtod', `strtof', and `strtold'. These new functions are perfectly
1567 accurate, and much faster than the old ones.
1569 * The implementation of the POSIX locale model was completely rewritten by
1570 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1571 to compile the POSIX locale definition.
1573 * The former dummy implementations of the strcoll and strxfrm function are
1574 now replaced by fully functional code contributed by Ulrich Drepper. The
1575 collation information comes from the POSIX locale definitions.
1577 * The new header <langinfo.h> defines an interface for accessing
1578 various locale-dependent data (using the locale chosen with `setlocale').
1580 * Ulrich Drepper has contributed a new suite of functions for operation on
1581 wide-character and multibyte-character strings, in <wchar.h>;
1582 and classification and case conversion of wide characters, in <wctype.h>.
1583 These new functions are conforming to the ISO C, Amendement 1 specification.
1585 * There is now a second implementation of the standard I/O library available.
1586 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1587 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1589 * You can now use positional parameter specifications in format strings
1590 for the `printf' and `scanf' families of functions. For example,
1591 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1592 ``Number 6, Mr Jones''. This is mainly useful when providing different
1593 format strings for different languages, whose grammars may dictate
1594 different orderings of the values being printed. To support this
1595 feature, the interface for `register_printf_handler' has changed; see
1596 the header file <printf.h> for details.
1598 * The `printf' and `scanf' families of functions now understand a new
1599 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1600 to group numbers as indicated by the locale; for `scanf' and friends, this
1601 says to accept as valid only a number with all the proper grouping
1602 separators in the right places. In the default "C" locale, numbers are
1603 not grouped; but locales for specific countries will define the usual
1604 conventions (i.e. separate thousands with `,' in the US locale).
1606 * The pgrp functions have been regularized, slightly incompatibly but much
1607 less confusingly. The core functions are now `getpgid' and `setpgid',
1608 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1609 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1610 provided for compatibility. There is no longer an incompatible `getpgrp'
1611 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1613 * The new header file <fts.h> and suite of functions simplify programs that
1614 operate on directory trees. This code comes from 4.4 BSD.
1616 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1617 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1618 NSS scheme used in glibc.
1620 * There is a new malloc debugging hook `__memalign_hook'.
1622 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1623 `unsigned int' in <sys/types.h>. These are for compatibility only and
1624 their use is discouraged.
1626 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1627 done differently, so that it works even without GNU ld.
1629 * New function `euidaccess' checks allowed access to a file like `access',
1630 but using the effective IDs instead of the real IDs.
1632 * The time zone data files have been updated for the latest and greatest
1633 local time conventions of the countries of the world.
1635 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1638 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1639 for formatting floating-point numbers. They are provided only for
1640 compatibility; new programs should use `sprintf' instead. There are
1641 also equivalent function for the `long double' floating-point type and
1642 all functions also exist in a reentrant form.
1644 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1645 functions for maintaining the login-record files (primarily of use to
1646 system programs such as `login'), and convenient functions for
1647 allocating and initializing a pseudo-terminal (pty) device.
1649 * Ulrich Drepper has contributed new support for System V style
1650 shared memory and IPC on systems that support it.
1652 * Ulrich Drepper has contributed several miscellaneous new functions found
1653 in System V: The `hsearch' family of functions provide an effective
1654 implementation of hash tables; `a64l' and `l64a' provide a very simple
1655 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1658 * Ulrich Drepper has contributed new reentrant counterparts for the
1659 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1661 * Ulrich Drepper has contributed new, highly-optimized versions of several
1662 string functions for the i486/Pentium family of processors.
1664 * Ulrich Drepper has updated the Linux-specific code, based largely
1665 on work done in Hongjiu Lu's version of GNU libc for Linux.
1666 The GNU library now supports Linux versions 2.0.10 and later,
1667 using the ELF object file format (i[3456]86-*-linux).
1669 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1671 * David Mosberger-Tang and Richard Henderson have ported the C library
1672 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1673 dynamic linking support for ELF/Alpha.
1675 * Richard Henderson contributed several Alpha optimized assembler function
1676 for arithmetic and string handling.
1678 * Ulrich Drepper has contributed a new set of message catalog functions to
1679 support multiple languages using the <libintl.h> interface, for use with
1680 his new package GNU gettext. Translation volunteers have contributed
1681 catalogs of the library's messages in Spanish, German, and Korean.
1683 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1684 program and the `catgets' function for reading the catalog files it
1685 creates. (The <libintl.h> interface is preferred; we include the
1686 <nl_types.h> interface using `catgets' only for source compatibility with
1687 programs already written to use it.)
1689 * New header file <values.h> gives SVID-compatible names for <limits.h>
1692 * Various new macros, declarations, and small header files for compatibility
1695 * New function `group_member' is a convenient way to check if a process has
1696 a given effective group ID.
1698 * When using GCC 2.7 and later, the socket functions are now declared in a
1699 special way so that passing an argument of type `struct sockaddr_in *',
1700 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1701 `struct sockaddr *' type, does not generate a type-clash warning.
1703 * New function `error' declared in header file <error.h> is a convenient
1704 function for printing error messages and optionally exiting; this is the
1705 canonical function used in GNU programs. The new functions `err', `warn',
1706 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1707 doing the same thing.
1709 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1710 POSIX.2 `glob' function to do ~ and {...} expansion.
1712 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1713 `clearenv' which is used in POSIX.9 is also available.
1715 * New function `getsid' returns session ID number on systems that support it.
1717 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1718 files <db.h> and <mpool.h> provide a rich set of functions for several
1719 types of simple databases stored in memory and in files, and <ndbm.h> is
1720 an old `ndbm'-compatible interface using the `db' functions. Link with
1721 `-ldb' to get these functions.
1723 * New macro `strdupa' copies a string like `strdup', but uses local stack
1724 space from `alloca' instead of dynamic heap space from `malloc'.
1726 * New function `strnlen' is like `strlen' but searches only a given maximum
1727 number of characters for the null terminator. `stpncpy', `strndup' and
1728 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1731 * New function `statfs' in header <sys/statfs.h>.
1733 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1734 provide convenient functions for operating on blocks of null-terminated
1737 * A new suite of functions in <utmp.h> handle all the details of reading
1738 and writing the utmp file.
1740 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1743 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1744 completely POSIX compliant and also implemented the extended functionality
1745 to handle alternate digit representation and alternate era date formats.
1747 * Ulrich Drepper provided an implementation of the `strptime' function
1748 defined in XPG4.2 which transforms a string into a `struct tm' value.
1750 * Paul Eggert provided the tzselect shell script as part of the timezone
1751 code. The shell script makes it easy to select the correct timezone
1754 * The implementation of the malloc family of functions is completely replaced
1755 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1756 The implementation uses the mmap function (if available) and it is
1757 optimized for the use in multi threaded programs.
1759 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1760 functions. This new functionality is usable by specifying a special
1761 salt string and it is compatible with implementation on *BSD systems.
1763 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1764 `getsubopt' to handle second level command line options, `bsd_signal'
1765 to access BSD style `signal' functionality, the obsolete `regexp' style
1768 * the `lchown' function is available on system which support this
1771 * The implementation of the shadow password handling function was contributed
1774 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1776 * POSIX.1g support was added. The <sys/select.h> header is available,
1777 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1778 implementation of `getaddrinfo'.
1782 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1784 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1785 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1787 * The new function `daemon' from 4.4 BSD is useful for server programs that
1788 want to put themselves in the background.
1790 * Joel Sherrill has contributed support for several standalone boards that
1791 run without an operating system.
1793 * `printf', `scanf' and friends now accept a `q' type modifier for long
1794 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1796 * All of the code taken from BSD (notably most of the math and networking
1797 routines) has been updated from the BSD 4.4-Lite release.
1799 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1801 * The new functions `getdomainname' and `setdomainname' fetch or change the
1802 YP/NIS domain name. These are system calls which exist on systems which
1805 * The time zone data files have been updated for the latest international
1808 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1809 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1813 * The C library now includes support for Sun RPC, from Sun's free
1814 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1815 are included. (There is still no support for YP.)
1817 * Tom Quinn has contributed a port of the C library to SGI machines running
1818 Irix 4 (mips-sgi-irix4).
1820 * The new `lockf' function is a simplified interface to the locking
1821 facilities of `fcntl', included for compatibility.
1823 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1825 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1827 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1830 * The error message printed by `assert' for a failed assertion now includes
1831 the name of the program (if using GNU ld) and the name of the calling
1832 function (with versions of GCC that support this).
1834 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1836 * The library now includes the <sys/mman.h> header file and memory
1837 management functions `mmap', `munmap', `mprotect', `msync', and
1838 `madvise', on systems that support those facilities.
1840 * The interface for `mcheck' has changed slightly: the function called to
1841 abort the program when an allocation inconsistency is detected now takes
1842 an argument that indicates the type of failure. The new function
1843 `mprobe' lets you request a consistency check for a particular block at
1844 any time (checks are normally done only when you call `free' or `realloc'
1847 * It is now possible to easily cross-compile the C library, building on one
1848 system a library to run on another machine and/or operating system. All
1849 you need to do is set the variable `HOST_CC' in `configparms' to the
1850 native compiler for programs to run on the machine you are building on (a
1851 few generator programs are used on Unix systems); set `CC' to the
1854 * The new function `fexecve' (only implemented on the GNU system) executes
1855 a program file given a file descriptor already open on the file.
1859 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1860 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1862 * You can set the variable `libprefix' in `configparms' to specify a prefix
1863 to be prepended to installed library files; this makes it easy to install
1864 the GNU C library to be linked as `-lgnuc' or whatever.
1866 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1867 copies a limited number of characters from a string, and returns the
1868 address of the last character written.
1870 * You no longer need to check for whether the installed `stddef.h' is
1871 compatible with the GNU C library. configure now checks for you.
1873 * You can now define a per-stream `fileno' function to convert the
1874 stream's cookie into an integral file descriptor.
1876 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1877 allocates zero bytes of storage, and returns a unique pointer which
1878 you can pass to `realloc' or `free'. The behavior is undefined if
1879 you dereference this pointer.
1881 * The C library now runs on Sony NEWS m68k machines running either
1882 NewsOS 3 or NewsOS 4.
1884 * The new `syscall' function is a system-dependent primitive function
1885 for invoking system calls. It has the canonical behavior on Unix
1886 systems, including unreliable return values for some calls (such as
1887 `pipe', `fork' and `getppid').
1889 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1890 to `EAGAIN', which is the preferred name. On systems whose kernels
1891 use two distinct codes, the C library now translates EWOULDBLOCK to
1892 EAGAIN in every system call function.
1896 * The GNU C Library Reference Manual is now distributed with the library.
1897 `make dvi' will produce a DVI file of the printed manual.
1898 `make info' will produce Info files that you can read on line using C-h i
1899 in Emacs or the `info' program.
1900 Please send comments on the manual to bug-glibc-manual@gnu.org.
1902 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1904 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1906 * Jason Merrill has contributed a port to the Sequent Symmetry running
1907 Dynix version 3 (i386-sequent-dynix).
1909 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1910 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1912 * New function `memory_warnings' lets you arrange to get warnings when
1913 malloc is running out of memory to allocate, like Emacs gives you.
1915 * The C library now contains the relocating allocator used in Emacs 19 for
1916 its editing buffers. This allocator (ralloc) minimizes allocation
1917 overhead and fragmentation by moving allocated regions around whenever it
1918 needs to. You always refer to a ralloc'd region with a "handle" (a
1919 pointer to a pointer--an object of type `void **').
1921 * There is a new `printf' format: `%m' gives you the string corresponding
1922 to the error code in `errno'.
1924 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1925 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1926 pass, the `a' modifier says to fill in a `char **' you pass with a
1929 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1930 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1931 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1933 * `mkstemp' is a traditional Unix function to atomically create and open a
1934 uniquely-named temporary file.
1938 * The standard location for the file that says what the local timezone is
1939 has changed again. It is now `/usr/local/etc/localtime' (or more
1940 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1942 * The distribution no longer contains any files with names longer than 14
1945 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1946 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1948 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1952 * The configuration process has changed quite a bit. The `configure'
1953 script is now used just like the configuration scripts for other GNU
1954 packages. The `sysdeps' directory hierarchy is much rearranged.
1955 The file `INSTALL' explains the new scheme in detail.
1957 * The header files no longer need to be processed into ANSI C and
1958 traditional C versions. There is just one set of files to install, and
1959 it will work with ANSI or old C compilers (including `gcc -traditional').
1961 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1962 MIPS DECStation running Ultrix 4.
1964 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1965 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1966 made itself into a shared library.
1968 * Yet further improved support for the i386, running 4.3 BSD-like systems
1969 (such as Mach 3 with the Unix single-server), or System V.
1971 * New function `strncasecmp' to do case-insensitive string comparison
1972 with limited length.
1974 * New function `strsep' is a reentrant alternative to `strtok'.
1976 * New functions `scandir' and `alphasort' for searching directories.
1978 * New function `setenv' is a better interface to `putenv'.
1980 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1981 function for traversing a directory tree.
1983 * The GNU obstack package is now also part of the C library.
1984 The new function `open_obstack_stream' creates a stdio stream that
1985 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1986 formatted output directly to an obstack.
1988 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1989 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1991 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1993 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1994 things to your strings.
1996 * There are some new test programs: test-fseek, testmb, and testrand.
1998 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1999 These ports are not finished, but are a good starting place for really
2000 supporting those systems.
2002 * `/etc/localtime' is now the standard location for the file that says what
2003 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2004 This follows the general principle that `/etc' is the place for all local
2005 configuration files.
2007 * The C library header files now use `extern "C"' when used by the C++
2008 compiler, so the C library should now work with C++ code.
2010 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2011 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2014 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2015 function which uses the `merge sort' algorithm, and is said to be
2016 significantly faster than the old GNU `qsort' function. Merge sort is
2017 now the standard `qsort' function. The new algorithm can require a lot
2018 of temporary storage; so, the old sorting function is called when the
2019 required storage is not available.
2021 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2022 provides the Unix `crypt' function, plus some other entry points.
2024 * The code and header files taken from 4.4 BSD have been updated with the
2025 latest files released from Berkeley.
2027 ----------------------------------------------------------------------
2028 Copyright information:
2030 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2032 Permission is granted to anyone to make or distribute verbatim copies
2033 of this document as received, in any medium, provided that the
2034 copyright notice and this permission notice are preserved,
2035 thus giving the recipient permission to redistribute in turn.
2037 Permission is granted to distribute modified versions
2038 of this document, or of portions of it,
2039 under the above conditions, provided also that they
2040 carry prominent notices stating who last changed them.
2043 version-control: never
projects / platform / upstream / glibc.git / blob