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, 13613, 13618, 13637, 13656,
21 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13726, 13738, 13739,
22 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806, 13824,
23 13840, 13841, 13844, 13846, 13851, 13852, 13854, 13871, 13872, 13873,
24 13879, 13883, 13884, 13885, 13886, 13892, 13895, 13908, 13910, 13911,
25 13912, 13913, 13914, 13915, 13916, 13917, 13918, 13919, 13920, 13921,
26 13922, 13923, 13924, 13926, 13927, 13928, 13938, 13941, 13942, 13954,
27 13955, 13956, 13963, 13967, 13970, 13973, 13979, 13983, 14012, 14027,
28 14033, 14034, 14040, 14049, 14053, 14055, 14064, 14080, 14083, 14103,
33 + define static_assert
37 + declare at_quick_exit and quick_exit also for ISO C11
39 + aligned_alloc. NB: The code is deliberately allows the size parameter
40 to not be a multiple of the alignment. This is a moronic requirement
41 in the standard but it is only a requirement on the caller, not the
46 + uchar.h support added
48 + CMPLX, CMPLXF, CMPLXL added
50 Implemented by Ulrich Drepper.
52 * Support for the IA-64 has been moved to ports.
54 * Remove support for anything but ELF binary format
56 * Checking versions of poll, ppoll added.
57 Implemented by Ulrich Drepper.
59 * More generic and 64-bit performance optimizations to math functions.
60 Implemented by Ulrich Drepper.
62 * New configure option --enable-obsolete-rpc makes the deprecated RPC
63 headers and functions available at compile time as they were before
64 version 2.14. This option will be removed at some time in the future
65 after the TI-RPC library becomes fully sufficient for the needs of
66 existing applications.
68 * Compatibility code for Linux kernel versions before 2.2 has been removed.
69 Note that glibc is not expected to work with any Linux kernel version
74 * The following bugs are resolved with this release:
76 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
77 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
78 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
79 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
80 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
81 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
82 13484, 13506, 13515, 13523, 13524, 13538, 13540
84 * New program pldd to list loaded object of a process
85 Implemented by Ulrich Drepper.
87 * Add nss_db support back to glibc. No more dependency on Berkeley db
88 and support for initgroups lookups.
89 Implemented by Ulrich Drepper.
91 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
94 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
97 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
99 Contributed by Liubov Dmitrieva.
101 * Optimized strchr and strrchr for SSE on x86-32.
102 Contributed by Liubov Dmitrieva.
104 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
105 for x86-64 and x86-32.
106 Contributed by Liubov Dmitrieva.
108 * New interfaces: scandirat, scandirat64
109 Implemented by Ulrich Drepper.
111 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
112 Implemented by Ulrich Drepper.
114 * nscd now also caches the netgroup database.
115 Implemented by Ulrich Drepper.
117 * Integrate libm with gcc's -ffinite-math-only option.
118 Implemented by Ulrich Drepper.
120 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
121 to math functions. Implemented by Ulrich Drepper.
123 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
124 Implemented by Ulrich Drepper.
126 * New Linux interfaces: process_vm_readv, process_vm_writev
128 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
129 Implemented by Ulrich Drepper.
131 * Optimized nearbyint and strcasecmp for PPC.
132 Implemented by Adhemerval Zanella.
134 * New locales: bho_IN, unm_US, es_CU, ta_LK
138 * The following bugs are resolved with this release:
140 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
141 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
142 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
143 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
144 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
145 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
146 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
147 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
148 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
149 12795, 12811, 12813, 12814, 12841
151 * The RPC implementation in libc is obsoleted. Old programs keep working
152 but new programs cannot be linked with the routines in libc anymore.
153 Programs in need of RPC functionality must be linked against TI-RPC.
154 The TI-RPC implementation is IPv6 enabled and there are other benefits.
156 Visible changes of this change include (obviously) the inability to link
157 programs using RPC functions without referencing the TI-RPC library and the
158 removal of the RPC headers from the glibc headers.
159 Implemented by Ulrich Drepper.
161 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
162 syncfs, setns, sendmmsg
164 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
165 yue_HK, lij_IT, mhr_RU
167 * New encodings: CP770, CP771, CP772, CP773, CP774
169 * New program sotruss to trace calls through PLTs
170 Implemented by Ulrich Drepper.
172 * The malloc hook implementation is marked deprecated and will be removed
173 from the default implementation in the next version. The design never
174 worked ever since the introduction of threads. Even programs which do
175 not create threads themselves can use multiple threads created internally.
179 * The following bugs are resolved with this release:
181 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
182 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
183 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
184 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
187 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
189 * POWER7 optimizations: memset, memcmp, strncmp
191 * New optimized string functions for x86-64: strnlen (SSE2),
192 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
193 Implemented by Ulrich Drepper.
197 * The following bugs are resolved with this release:
199 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
200 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
201 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
202 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
203 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
204 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
205 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
206 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
208 * New interfaces: pthread_getname_np, pthread_setname_np
210 * New Linux interface: recvmmsg
212 * STT_GNU_IFUNC implemented for Sparc by David Miller.
214 * The dynamic linker now recognizes supported ABI versions from the
215 EI_ABIVERSION field in the ELF header.
216 Implemented by Ulrich Drepper.
218 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
219 will not be used to fill in password fields in the passwd.byname replies.
220 Instead it is used to synthesize the shadow.byname table, should it be
221 missing. This is a useful mode in some installations involving Solaris.
222 Implemented by Ulrich Drepper.
224 * New locales: kok_IN, sq_MK, cv_RU
228 * The following bugs are resolved with this release:
230 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
231 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
232 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
233 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
234 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
235 10789, 10817, 10823, 10840, 10847
237 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
239 Implemented by Ulrich Drepper.
241 * Checking version of longjmp added that fails if an uninitialized stack
242 frame would be created. Implemented by Ulrich Drepper.
244 * STT_GNU_IFUNC is now supported in static executables.
245 Implemented by H.J. Lu.
247 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
249 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
250 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
251 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
252 Contributed by H.J. Lu.
254 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
255 Implemented by Ulrich Drepper.
257 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
259 Contributed by H.J. Lu.
261 * Support for fma instruction in AVX on x86-64.
262 Implemented by H.J. Lu and Ulrich Drepper.
264 * AVX support in x86-64 auditing support in ld.so.
265 Implemented by H.J. Lu.
267 * STB_GNU_UNIQUE support added.
268 Implemented by Ulrich Drepper.
270 * Implement second fallback mode for optimized DNS lookup for even more
271 broken environments. If two requests from the same port are not
272 handled correctly close the socket and open a new one before sending
273 the second request. The 'single-request-reopen' option in /etc/resolv.conf
274 can be used to select this mode right away, instead of rediscovering the
275 necessity is every process again.
276 Implemented by Ulrich Drepper.
278 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
279 Implemented by Adam Tkac.
281 * Optimized iconv conversions for S390x.
282 Implemented by Andreas Krebbel.
284 * Using condvars with PI mutexes is now more efficient due to kernel
285 support for requeueing to PI futexes. NPTL support added for x86-64.
286 Implemented by Ulrich Drepper.
288 * New locales: ps_AF, my_MM
292 * The following bugs are resolved with this release:
294 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
295 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
296 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
297 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
298 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
300 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
301 Implemented by Ulrich Drepper.
303 * New Linux interfaces: accept4, fallocate, fallocate64.
304 Implemented by Ulrich Drepper.
306 * Correct declarations of string function when used in C++ code. This
307 could lead to compile errors for invalid C++ code.
309 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
312 * New POSIX 2008 interface: psiginfo
313 Implemented by Ulrich Drepper.
315 * New ISO C++1x interfaces: quick_exit, at_quick_exit
316 Implemented by Ulrich Drepper.
318 * Support for selecting between multiple function definitions at runtime
319 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
321 * The libcrypt library can now use the hash function implementations in
322 NSS. Implemented by Ulrich Drepper.
324 * The malloc implementation can be compiled to be less memory efficient
325 but higher performing in multi-threaded programs.
326 Implemented by Ulrich Drepper.
328 * New locales: nan_TW@latin, ks_IN
330 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
331 Implemented by Ulrich Drepper.
333 * Extended printf hook support. It is possible to use user-defined types
334 and extend existing format specifiers.
335 Implemented by Ulrich Drepper.
337 * Handling for group shadow files has been added.
338 Implemented by Ulrich Drepper.
340 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
341 servers (the case, e.g., for some people using the built-in DNS
342 server in ADSL modems/routers). There is a once-per-process timeout
343 in case of a broken server. To avoid it, users can run nscd or put
344 'options single-request' in /etc/resolv.conf.
345 Implemented by Ulrich Drepper.
349 * The following bugs are resolved with this release:
351 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
352 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
353 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
354 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
355 6968, 6974, 6980, 6995, 7008, 7009, 7029
357 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
358 up at the same time. Implemented by Ulrich Drepper.
360 * TLS descriptors for LD and GD on x86 and x86-64.
361 Implemented by Alexandre Oliva.
363 * getaddrinfo now handles DCCP and UDPlite.
364 Implemented by Ulrich Drepper.
366 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
367 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
368 Implemented by Ulrich Drepper.
370 * New implementation of memmem, strstr, and strcasestr which is O(n).
371 Implemented by Eric Blake.
373 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
375 * Implement "e" option for popen to open file descriptor with the
376 close-on-exec flag set. Implemented by Ulrich Drepper.
378 * Implement "b" mode for fmemopen. In this mode writes writes don't
379 implicitly add a NUL byte and seeks from the end of the buffer really
380 use the buffer end, not the string length as the basis.
381 Implemented by Ulrich Drepper.
383 * Many functions, exported and internal, now atomically set the close-on-exec
384 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
386 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
388 Implemented by Pravin Satpute.
390 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
394 * The following bugs are resolved with this release:
396 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
397 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
398 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
399 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
400 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
401 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
402 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
404 * New locales: bo_CN, bo_IN, shs_CA.
406 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
408 * Sorting rules for some Indian languages (Devanagari and Gujarati).
409 Implemented by Pravin Satpute.
411 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
413 * nscd caches now all timeouts for DNS entries
414 Implemented by Ulrich Drepper.
416 * nscd is more efficient and wakes up less often.
417 Implemented by Ulrich Drepper.
419 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
420 vdprintf, and obstack_vprintf.
421 Implemented by Jakub Jelinek.
423 * Faster memset for x86-64.
424 Implemented by Harsha Jagasia and H.J. Lu.
426 * Faster memcpy on x86.
427 Implemented by Ulrich Drepper.
429 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
430 Implemented by Ulrich Drepper.
432 * Faster sqrt and sqrtf implemention for some PPC variants.
433 Implemented by Stephen Munroe.
437 * The following bugs are resolved with this release:
439 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
440 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
441 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
442 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
443 5071, 5103, 5104, 5112, 5113, 5184, 5186
445 * More checking functions: fread, fread_unlocked, open*, mq_open.
446 Implemented by Jakub Jelinek and Ulrich Drepper.
448 * Extend fortification to C++. Implemented by Jakub Jelinek.
450 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
451 by not recognizing 'a' as a modifier when those specs are requested.
452 Implemented by Jakub Jelinek.
454 * PPC optimizations to math and string functions.
455 Implemented by Steven Munroe.
457 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
458 options to be passed. Implemented by Ulrich Drepper.
460 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
462 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
463 Implemented by Ulrich Drepper.
465 * Handle private futexes in the NPTL implementation.
466 Implemented by Jakub Jelinek and Ulrich Drepper.
468 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
469 Implemented by Roland McGrath and Ulrich Drepper.
471 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
473 * SHA-256 and SHA-512 based password encryption.
474 Implemented by Ulrich Drepper.
476 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
477 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
480 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
481 Implemented by Ulrich Drepper.
485 * The following bugs are resolved with this release:
487 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
488 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
489 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
490 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
491 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
492 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
493 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
496 * New Linux interfaces: epoll_pwait, sched_getcpu.
498 * New generic interfaces: strerror_l.
500 * nscd can now cache the services database. Implemented by Ulrich Drepper.
504 * The following bugs are resolved with this release:
506 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
507 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
508 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
509 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
510 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
511 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
512 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
513 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
514 3225, 3251, 3252, 3253, 3273
516 * For Linux, the sorting of addresses returned by getaddrinfo now also
517 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
518 Implemented by Ulrich Drepper.
520 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
521 Implemented by Ulrich Drepper.
523 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
525 * New iconv module for MIK. Contributed by Alexander Shopov.
527 * For sites with broken group and/or passwd database, the auto-propagate
528 option of nscd can prevent creating ID lookup entries from the results
529 of a name lookup and vice versa. This usually is no problem but some
530 site might have problems with the default behavior.
531 Implemented by Ulrich Drepper.
533 * Iterating over entire database in NIS can be slow. With the
534 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
535 to trade time for memory. The entire database will be read at once.
536 Implemented by Ulrich Drepper.
538 * The interfaces introduced in RFC 3542 have been implemented by
541 * Support for the new ELF hash table format was added by Ulrich Drepper.
543 * Support for priority inheritance mutexes added by Jakub Jelinek and
546 * Support for priority protected mutexes added by Jakub Jelinek.
548 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
549 or_IN, csb_PL, fy_NL, sr_ME.
553 * More overflow detection functions.
555 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
556 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
558 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
559 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
560 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
561 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
562 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
563 by Masahide Washizawa.
565 * It is now possible to install audit libraries for the dynamic linker using
566 LD_AUDIT. Implemented by Ulrich Drepper.
568 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
569 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
570 For a libc and libpthread that works well on Linux 2.4 kernels, we
571 recommend using the stable 2.3 branch.
573 * The new function open_wmemstream acts like open_memstream,
574 but uses a wchar_t wide character buffer.
576 * The new function ppoll is an improved version of poll, similar to pselect.
578 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
579 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
580 renameat, unlinkat, linkat, symlinkat, readlinkat.
582 * New Linux kernel system calls: unshare,
583 inotify_init, inotify_add_watch, inotify_rm_watch.
585 * The euidaccess function is now also known by the alias eaccess,
586 for compatibility with some other systems.
588 * Timezone data updated to 2006b version.
592 * The following bugs are resolved with this release:
594 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
595 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
596 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
597 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
598 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
599 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
601 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
603 * As of this release, GCC 4 can be used to compile the C Library.
605 * Timezone data updated to 2005m version.
609 * The following bugs are resolved with this release:
611 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
612 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
613 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
614 777, 787, 821, 822, 823, 825
616 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
620 * Support for RFC 3678. Real implementations exist only for Linux so far.
621 Implemented by Ulrich Drepper.
623 * nscd can now cache entries persistently. Expiring entries are reloaded.
624 For speedups the cache can be shared in memory with client processes.
625 Implemented by Ulrich Drepper.
627 * nscd can now perform SELinux checks.
628 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
630 * getaddrinfo queries are now cached. Canonical name lookup is performed
632 Implemented by Ulrich Drepper.
634 * The nothrow function attribute is used when headers are used by gcc when
635 compiling C code. This can avoid significant amounts of exception
638 * The malloc functions perform more error checking and are stricter when
639 it comes to reacting on errors. The default action is to terminate
640 the process after showing an error message. Implemented by Ulrich Drepper.
642 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
643 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
645 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
646 namespaces using the new function dlmopen(). This feature is of course,
647 like most other dynamic loading functionality, not available in statically
648 linked applications. Implemented by Ulrich Drepper.
650 * Low-overhead boundary checking variants of string and some stdio functions
651 were added. These are to be used in conjunction with a gcc patch by
652 Jakub Jelinek which adds calls to these functions if possible.
653 Implemented by Jakub Jelinek and Ulrich Drepper.
655 * Old code for several operating systems and machine architectures that
656 have not been in working condition in a long time have been removed from
657 the main source tree maintained by the GNU C Library's maintainers.
658 These files are now reside in the separate `ports' source module
659 that is usable as an add-on when building the library.
663 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
664 interrogate the dynamic linker, compatible with the Solaris interface.
666 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
667 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
669 * getifaddrs now uses the netlink interface on Linux to get its information.
670 Implemented by Thorsten Kukuk.
672 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
673 Implemented by Ulrich Drepper.
675 * support for non-executable stacks on x86 has been added. Changes mostly
678 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
681 * getaddrinfo now performs destination address selection according to
686 * Thread-safe interfaces for many functions that access locale data
687 were added in version 2.3, but these features were omitted from NEWS.
688 Many functions have variants with an `_l' suffix that take a `locale_t'
689 object as a parameter rather than consulting the current locale.
690 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
691 create and maintain `locale_t' objects. Additionally, the new function
692 `uselocale' sets "the current locale" (as used by functions not so
693 parameterized) set for an individual thread. These features were added
694 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
696 * The functions getresuid, getresgid, setresuid, and setresgid, which
697 have long been available on Linux, are now declared in <unistd.h>
698 and are now also available on the Hurd.
700 * ELF thread-local storage support (TLS) now works on x86-64.
702 * The new dynamic string token $LIB is expanded in shared library names.
703 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
705 * Aldy Hernandez contributed complete software floating point support for
706 PowerPC machines with no FPU.
708 * fexecve is implemented on Linux.
710 * The `btowc' function should work at least twice as fast due to
711 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
713 * With approriate thread add-ons cancelable functions are now implemented
714 in libc.so as well. No need to call the function in libpthread. This
715 change allowed to finally disable the incorrect and expensive handling
716 of weak definition in ld.so.
718 * Yet more PLT entries in libc.so have been removed. We finally arrived
719 at the bare minimum. Startup times improved appropriately.
721 * Support for the new Linux/x86 system call interface was added. The
722 AT_SYSINFO auxiliary vector entry is recognized and handled.
726 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
729 * iconv (the program and the interface) now accepts empty names (excluding
730 options like //TRANSLIT) to mean "use charset of current locale".
732 * localedef can now transliterate characters in strings which are not in
733 the provided charmap. The information from the input locale is used.
735 * Prelinking support was added for ELF targets. This requires additional
736 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
738 * Read-only stdio streams now use mmap to speed up operation by eliminating
739 copying and buffer underflows. To use add 'm' to the mode string of
740 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
742 * The malloc functions were completely rewritten by Wolfram Gloger based
743 on Doug Lea's malloc-2.7.0.c.
745 * Isamu Hasegawa contributed a completely new and POSIX-conformant
746 implementation of regex.
748 * Bruno Haible upgraded the iconv and locale implementation to support
751 * Contents of the LC_* and LANG environment variables in the CEN style are
752 not recognized anymore. It never was used. Change by Ulrich Drepper.
754 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
755 thread-local storage (TLS) ABI on some platforms.
756 Changes by Ulrich Drepper. SH support by Kaz Kojima.
758 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
759 EUC-JISX0213, and TSCII.
761 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
762 BSD-compatible interface for getting all network interface addresses.
763 Implementation for IPv4 by Roland McGrath.
765 * Loading of locale data is faster due to the introduction of a locale
766 archive. Implemented by Roland McGrath and Ulrich Drepper.
768 * Startup times are significantly reduced by not using exported functions
769 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
772 * Steven Munroe contributed a port to PowerPC64/Linux.
776 * The Hurd now uses the GNU libio implementation of stdio rather than the
777 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
779 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
780 with the same behavior as the Linux system call of the same name.
784 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
785 128-bit long double format.
787 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
788 IBM1161, and IBM1162 charsets.
790 * Andreas Jaeger contributed a port to x86-64/Linux.
792 * Peter Bruin contributed a port to PowerPC/Hurd.
794 * libc functions using I/O streams now can handle wide-oriented streams
797 * optimizations in the dynamic linker. Binaries created by recent binutils
798 versions start up quicker due to reduced time spent on relocations.
800 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
804 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
805 asinh, atanh, j0 for the 128-bit long double format.
807 * Bruno Haible updated all the code handling Unicode in some form to
810 * Speed of regex for single-byte locales is back to previous levels.
811 Patch by Isamu Hasegawa.
813 * Alpha, SPARC, and IA-64 now also using floating stacks.
815 * Startup time of internationalized applications greatly improved through
816 iconv cache. Use iconvconfig to generate the cache file.
817 Contributed by Ulrich Drepper.
819 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
820 severe performance problems. Patch by David Mosberger.
822 * The Hurd port got a lot more functionality like AIO, various stdio
823 extensions, etc. Mainly done by Roland McGrath.
825 * mtrace can now lookup symbols in shared libraries.
829 * Intel's IA-64 math library is largely integrated. It provides fast and
830 accurate implementatations for most basic and standard math functions
831 in float, double, and long double format.
833 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
834 and asin for the 96-bit long double format and asin, log, tan for the
835 128-bit long double format.
837 * The beginning of a last-bit accurate math library by IBM Haifa were added.
838 The basic double functions exist today. Contributed by Abraham Ziv
839 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
840 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
842 * An asynchronous name lookup library was added. The interface is designed
843 after POSIX AIO. The proposal was circulated beforehand to get comments.
844 No negative ones came in. Implemented by Ulrich Drepper.
846 * Port to S390/64bit contributed by Martin Schwidefsky
847 <schwidefsky@de.ibm.com>.
849 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
850 of functions for Linux/IA-64.
852 * The RPC code is now thread safe. Threads can now use the same service
853 of different services at the same time. Patch by Eric Norum
854 <eric.norum@usask.ca> with some help by Ulrich Drepper.
856 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
857 family of functions for Linux/S390.
859 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
860 of functions for Linux/x86.
862 * Port to Linux/CRIS contributed by Axis Communications.
866 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
867 we can now check for namespace violations and missing declarations. The
868 result is that almost all headers are now Unix-compliant (as defined in
869 the upcoming XPG6). The negative side is that some programs might need
870 corrections, too, if they depend on the incorrect form of the headers in
871 previous versions which defined too many symbols and included too many
874 * regex now handles multibyte character sets correctly.
875 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
877 * iconv (the program) does now conform to the upcoming XPG6 and handles
878 charmaps. Instead of the charset names the path of charmaps can be
879 provided and the conversion happens based on this data.
880 Contributed by Ulrich Drepper.
882 * The locale program now provides detailed information about the installed
887 only lists the names of the supported locales
891 provides details such as country, language, and codeset name.
892 Contributed by Ulrich Drepper.
896 * The gencat program now parses the input file according to the charset
897 selected by the LC_CTYPE category. This is important for stateful
898 character sets. To make generating catalogs easier there is a way
899 to overwrite the charset selected by the locale: before the first
900 message or $ quote line the catalog can contain a line like
904 to select the charset (ISO-8859-2 in this case).
906 Implemented by Shinya Hanataka and Ulrich Drepper.
908 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
909 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
910 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
912 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
913 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
915 * The LANGUAGE environment variable is now ignored unless the locale is
916 changed from the default "C" locale.
918 * The usual bug fixes.
922 * Greg McGary added runtime support for bounds checking using gcc's
923 new -fbounded-pointers option. ix86 target is complete. PowerPC
926 * Thorsten Kukuk added secure mode support to nscd.
928 * The Berkeley db libraries have been removed.
930 Related, the nss_db module is now in a separate package since it
931 obviously requires a database library being available.
933 * Wide character I/O streams implemented by Ulrich Drepper.
935 * Functions from the extended socket API added by Ulrich Drepper.
937 * Functions feenableexcept and fedisableexcept to control the
938 behaviour of individual exceptions have been added by Andreas Jaeger.
940 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
942 * The resolver code has been updated from bind 8.2.3-T5B which supports
943 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
946 This change could in some situations effect backward compatibility. Since
947 now `_res' is a thread-local instead of a global variable, modifying it
948 in one thread does not have any effect in other threads.
950 The resolver library was also extended to allow IPv6 as the transport
951 protocol for the requests. This work was done by Stig Venaas.
953 * Compatibility code for K&R C compilers has been removed from the
954 header files. A ISO C compiler is needed to use the library
955 (conforming to either C89 or C99 standard).
957 * Complete rewrite of the localedef program to support multibyte character
958 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
959 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
960 Implemented by Ulrich Drepper.
962 Bruno Haible significantly improved the generation and use of the data
963 structures for the wide character tables.
965 * Plural handling in gettext implemented by Ulrich Drepper.
967 * The utmp daemon has been removed.
969 * The port to MIPS-Linux has been finished by Andreas Jaeger.
971 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
974 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
976 * POSIX barriers implemented by Kaz Kylheku.
978 * POSIX spawn function family implemented by Ulrich Drepper.
980 * POSIX spinlocks are now available.
982 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
984 * the configure option --enable-kernel=X.Y.Z allows to strip out
985 compatibility for kernel versions before X.Y.Z. This is currently only
986 implemented for Linux.
988 * the sockaddr_in6 structure changed. The IPv6 working group added a new
989 field sin6_scope_id. This means that all programs using IPv6 should be
990 recompiled. Don't expect binary compatibility with previous glibc
993 * various conversion modules for IBM character sets contributed by
996 * IA-64 port by Jes Sorensen and HJ Lu.
1010 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1012 * New xdr functions are added; some rpc functions are now 64bit clean.
1014 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1016 * Fixed known incompatibilities with glibc 2.0.
1018 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1020 * Optimized a number of functions (especially the ELF dynamic loader).
1022 * Update timezone data files.
1024 * lots of charmaps corrections
1026 * some new locale definitions and charmaps
1031 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1032 conform to POSIX member type requirements. Symbol versions have been
1033 adjusted as needed within the library, and for direct use by applications,
1034 but there is potential for problems if third-party libraries use
1035 struct timeval as part of their interface. This does not present
1036 a problem for X and other "essential" system libraries.
1038 * An additional locale model to support C++ Standard Library locale
1039 model and probably more was implemented by Ulrich Drepper.
1041 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1044 * Miles Bader provided the `argp' function family to support hierachical
1045 command line argument parsing, layered on top of getopt.
1047 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1049 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1052 * scanf recognizes the %a and %A format for scanning floating point numbers.
1054 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1055 information and interfaces for the available integer types.
1057 * about 130 new math functions were added to implement the ISO C9x math
1060 * the new header <complex.h> contains definitions of the complex math
1061 functions from ISO C 9X.
1063 * the new header <tgmath.h> defines generic macros to use complex or
1064 real valued functions.
1066 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1068 * Andreas Jaeger provided a test suite for the math library.
1070 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1072 * Ulrich Drepper added character set conversion functions (iconv).
1074 * Optimized string functions have been added.
1076 * The localedata addon is now part of glibc.
1078 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1080 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1081 daemon for NSS (nscd).
1083 Missing a better place here are some numbers on improvements. Under
1084 Linux 2.1.125 un-tar-ing the kernel sources takes
1088 using local files 12.19s 6.88s 22.91s
1090 using NIS 13.92s 8.91s 26.34s
1092 using NIS & nscd 10.37s 7.34s 25.30s
1094 using NIS+ 27.57s 30.37s 640.46s
1096 using NIS+ & nscd 10.25s 7.83s 26.51s
1098 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1100 Keep in mind that non-namelookup related operations dominate above times.
1101 It was just a common complain that using NIS+ unpacking the kernel is
1104 [1] The old nscd implementation is not available anymore since it was
1105 distributed with glibc up to version 2.0.98 and thus is now replaced.
1107 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1109 * Mark Kettenis provided a Hesiod NSS module.
1111 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1112 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1114 * rcmd can now handle netgroups (Dick Streefland).
1116 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1119 * Support for the IPv6 protocol has been added to the socket API, as per the
1120 latest draft standards.
1122 * Support for Linux 2.2 has been added.
1124 * Interface changes relative to the latest 2.0.x release:
1125 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1126 addseverity NEW: Unix98
1127 alphasort64 NEW: LFS
1128 argp_err_exit_status NEW: argp, GNU ext
1129 argp_error NEW: argp, GNU ext
1130 argp_failure NEW: argp, GNU ext
1131 argp_help NEW: argp, GNU ext
1132 argp_parse NEW: argp, GNU ext
1133 argp_program_bug_address NEW: argp, GNU ext
1134 argp_program_version NEW: argp, GNU ext
1135 argp_program_version_hook NEW: argp, GNU ext
1136 argp_state_help NEW: argp, GNU ext
1137 argp_usage NEW: argp, GNU ext
1138 authdes_create NEW: Secure RPC
1139 authdes_getucred NEW: Secure RPC
1140 authdes_pk_create NEW: Secure RPC
1141 backtrace NEW: GNU ext.
1142 backtrace_symbols NEW: GNU ext.
1143 backtrace_symbols_fd NEW: GNU ext.
1145 cacosf NEW: ISO C 9x
1146 cacosh NEW: ISO C 9x
1147 cacoshf NEW: ISO C 9x
1148 cacoshl NEW: ISO C 9x
1149 cacosl NEW: ISO C 9x
1156 casinf NEW: ISO C 9x
1157 casinh NEW: ISO C 9x
1158 casinhf NEW: ISO C 9x
1159 casinhl NEW: ISO C 9x
1160 casinl NEW: ISO C 9x
1162 catanf NEW: ISO C 9x
1163 catanh NEW: ISO C 9x
1164 catanhf NEW: ISO C 9x
1165 catanhl NEW: ISO C 9x
1166 catanl NEW: ISO C 9x
1167 cbc_crypt NEW: Secure RPC
1171 ccoshf NEW: ISO C 9x
1172 ccoshl NEW: ISO C 9x
1178 cimagf NEW: ISO C 9x
1179 cimagl NEW: ISO C 9x
1180 clearerr_locked REMOVED
1181 clntunix_create NEW: sunrpc ext
1183 clog10 NEW: ISO C 9x
1184 clog10f NEW: ISO C 9x
1185 clog10l NEW: ISO C 9x
1195 cprojf NEW: ISO C 9x
1196 cprojl NEW: ISO C 9x
1198 crealf NEW: ISO C 9x
1199 creall NEW: ISO C 9x
1204 csinhf NEW: ISO C 9x
1205 csinhl NEW: ISO C 9x
1208 csqrtf NEW: ISO C 9x
1209 csqrtl NEW: ISO C 9x
1213 ctanhf NEW: ISO C 9x
1214 ctanhl NEW: ISO C 9x
1216 des_setparity NEW: Secure RPC
1217 ecb_crypt NEW: Secure RPC
1218 endutxent NEW: Unix98
1220 exp10f NEW: ISO C 9x
1221 exp10l NEW: ISO C 9x
1225 fattach NEW: STREAMS
1226 fdetach NEW: STREAMS
1230 feclearexcept NEW: ISO C 9x
1231 fegetenv NEW: ISO C 9x
1232 fegetexceptflag NEW: ISO C 9x
1233 fegetround NEW: ISO C 9x
1234 feholdexcept NEW: ISO C 9x
1236 feraiseexcept NEW: ISO C 9x
1237 ferror_locked REMOVED
1238 fesetenv NEW: ISO C 9x
1239 fesetexceptflag NEW: ISO C 9x
1240 fesetround NEW: ISO C 9x
1241 fetestexcept NEW: ISO C 9x
1242 feupdateenv NEW: ISO C 9x
1243 fflush_locked REMOVED
1247 fgets_unlocked NEW: GNU ext.
1248 fileno_locked REMOVED
1260 fputc_locked REMOVED
1261 fputs_unlocked NEW: GNU ext.
1262 fread_unlocked NEW: GNU ext.
1267 fstatvfs NEW: Unix98
1271 ftruncate64 NEW: LFS
1273 fwrite_unlocked NEW: GNU ext.
1274 gai_strerror NEW: IPv6
1278 getchar_locked REMOVED
1280 getdate_err NEW: Unix98
1281 getdate_r NEW: GNU ext.
1283 getnameinfo NEW: IPv6
1284 getnetname NEW: Secure RPC
1285 getpmsg NEW: STREAMS
1286 getpt NEW: Unix98 PTY
1287 getrlimit64 NEW: LFS
1288 getutxent NEW: Unix98
1289 getutxid NEW: Unix98
1290 getutxline NEW: Unix98
1291 glob64 NEW: GNU ext.
1292 globfree64 NEW: GNU ext.
1293 gnu_get_libc_release NEW: GNU ext.
1294 gnu_get_libc_version NEW: GNU ext.
1295 grantpt NEW: Unix98 PTY
1296 host2netname NEW: Secure RPC
1298 iconv_close NEW: iconv
1299 iconv_open NEW: iconv
1300 if_freenameindex NEW: IPv6
1301 if_indextoname NEW: IPv6
1302 if_nameindex NEW: IPv6
1303 if_nametoindex NEW: IPv6
1304 in6addr_any NEW: IPv6
1305 in6addr_loopback NEW: IPv6
1306 inet6_isipv4mapped NEW: IPv6
1307 isastream NEW: STREAMS
1308 iswblank NEW: GNU ext.
1309 key_decryptsession NEW: Secure RPC
1310 key_decryptsession_pk NEW: Secure RPC
1311 key_encryptsession NEW: Secure RPC
1312 key_encryptsession_pk NEW: Secure RPC
1313 key_gendes NEW: Secure RPC
1314 key_get_conv NEW: Secure RPC
1315 key_secretkey_is_set NEW: Secure RPC
1316 key_setnet NEW: Secure RPC
1317 key_setsecret NEW: Secure RPC
1318 llrint NEW: ISO C 9x
1319 llrintf NEW: ISO C 9x
1320 llrintl NEW: ISO C 9x
1321 llround NEW: ISO C 9x
1322 llroundf NEW: ISO C 9x
1323 llroundl NEW: ISO C 9x
1328 lrintf NEW: ISO C 9x
1329 lrintl NEW: ISO C 9x
1330 lround NEW: ISO C 9x
1331 lroundf NEW: ISO C 9x
1332 lroundl NEW: ISO C 9x
1334 makecontext NEW: Unix98
1335 mempcpy NEW: GNU ext.
1338 modify_ldt NEW: kernel
1342 nearbyint NEW: ISO C 9x
1343 nearbyintf NEW: ISO C 9x
1344 nearbyintl NEW: ISO C 9x
1345 netname2host NEW: Secure RPC
1346 netname2user NEW: Secure RPC
1347 nexttoward NEW: ISO C 9x
1348 nexttowardf NEW: ISO C 9x
1349 nexttowardl NEW: ISO C 9x
1353 passwd2des NEW: Secure RPC
1355 pow10f NEW: GNU ext.
1356 pow10l NEW: GNU ext.
1359 printf_size NEW: GNU ext.
1360 printf_size_info NEW: GNU ext.
1361 profil_counter REMOVED
1362 pthread_mutexattr_getkind_np REPLACED
1363 pthread_mutexattr_setkind_np REPLACED
1364 ptsname NEW: Unix98 PTY
1365 ptsname_r NEW: Unix98 PTY
1367 putchar_locked REMOVED
1368 putgrent NEW: GNU ext.
1370 putpmsg NEW: STREAMS
1371 pututxline NEW: Unix98
1375 readdir64_r NEW: LFS
1376 remquo NEW: ISO C 9x
1377 remquof NEW: ISO C 9x
1378 remquol NEW: ISO C 9x
1380 roundf NEW: ISO C 9x
1381 roundl NEW: ISO C 9x
1383 scalbln NEW: ISO C 9x
1384 scalblnf NEW: ISO C 9x
1385 scalblnl NEW: ISO C 9x
1387 sendfile NEW: kernel
1388 setcontext NEW: Unix98
1389 setrlimit64 NEW: LFS
1390 setutxent NEW: Unix98
1392 sigignore NEW: Unix98
1393 sigqueue NEW: POSIX.1b
1394 sigrelse NEW: Unix98
1395 sigset NEW: POSIX.1b
1396 sigtimedwait NEW: POSIX.1b
1397 sigwaitinfo NEW: POSIX.1b
1398 sincos NEW: GNU ext.
1399 sincosf NEW: GNU ext.
1400 sincosl NEW: GNU ext.
1404 strcasestr NEW: GNU ext.
1405 strtoimax NEW: ISO C 9x
1406 strtoumax NEW: ISO C 9x
1407 strverscmp NEW: GNU ext.
1408 svcauthdes_stats NEW: Secure RPC
1409 svcunix_create NEW: sunrpc etx
1410 svcunixfd_create NEW: sunrpc ext
1411 swapcontext NEW: Unix98
1412 tcgetsid NEW: Unix98 PTY
1413 tdestroy NEW: GNU ext.
1414 tgamma NEW: ISO C 9x
1415 tgammaf NEW: ISO C 9x
1416 tgammal NEW: ISO C 9x
1420 truncf NEW: ISO C 9x
1421 truncl NEW: ISO C 9x
1423 unlockpt NEW: Unix98 PTY
1424 updwtmpx NEW: Unix98
1425 user2netname NEW: Secure RPC
1426 utmpxname NEW: Unix98
1427 versionsort NEW: GNU ext.
1428 versionsort64 NEW: GNU ext.
1430 wcscasecmp NEW: GNU ext.
1431 wcsncasecmp NEW: GNU ext.
1432 wcsnlen NEW: GNU ext.
1433 wcstoimax NEW: ISO C 9x
1434 wcstoll NEW: ISO C 9x
1435 wcstoull NEW: ISO C 9x
1436 wcstoumax NEW: ISO C 9x
1438 wordexp NEW: POSIX.2
1439 wordfree NEW: POSIX.2
1440 write_profiling REMOVED
1441 xdecrypt NEW: Secure RPC
1442 xdr_authdes_cred NEW: Secure RPC
1443 xdr_authdes_verf NEW: Secure RPC
1444 xdr_cryptkeyarg NEW: Secure RPC
1445 xdr_cryptkeyarg2 NEW: Secure RPC
1446 xdr_cryptkeyres NEW: Secure RPC
1447 xdr_getcredres NEW: Secure RPC
1448 xdr_key_netstarg NEW: Secure RPC
1449 xdr_key_netstres NEW: Secure RPC
1450 xdr_keybuf NEW: Secure RPC
1451 xdr_keystatus NEW: Secure RPC
1452 xdr_netnamestr NEW: Secure RPC
1453 xdr_sizeof NEW: Secure RPC
1454 xdr_unixcred NEW: sunrpc ext
1455 xencrypt NEW: Secure RPC
1456 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1467 * inet_ntoa is thread-safe
1469 * updwtmp is moved from libutil to libc
1471 * rewrite of cbrt function
1473 * update of timezone data
1487 * add atoll function
1489 * fix complex problems in Berkeley DB code
1491 * fix math functions
1495 * fixed lots of header problems (especially Linux/GNU specific)
1497 * dynamic loader preserves all registers
1499 * Roland McGrath provided support for handling of auxiliary objects in
1500 the ELF dynamic loader.
1502 * support for parallel builds is improved
1506 * GNU extensions are no longer declared by default. To enable them you
1507 must define the macro `_GNU_SOURCE' in your program or compile with
1510 * The library has changed from using GNU ld symbol aliases to using weak
1511 symbols where available. The ELF object file format supports weak
1512 symbols; GNU ld also supports weak symbols in the a.out format. (There
1513 is also now support for other GNU ld extensions in ELF. Use the
1514 `--with-elf' option to configure to indicate you have ELF, and
1515 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1516 of many files which contained only symbol aliases, reducing the size of
1517 the source and the compiled library; many other files were renamed to
1518 less cryptic names previously occupied by the symbol alias files.
1519 There is a new header file <elf.h> for programs which operate on
1520 files in the ELF format.
1522 * Converted to Autoconf version 2, so `configure' has more options.
1523 Run `configure --help' to see the details.
1525 * The library can now be configured to build profiling, highly-optimized
1526 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1527 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1528 `configure' enable building these extra libraries. The shared library is
1529 built by default when using both ELF and GNU ld. When shared libraries
1530 are enabled, the new library `-ldl' is available for arbitrary run-time
1531 loading of shared objects; its interface is defined in <dlfcn.h>. The
1532 new header file <link.h> gives access to the internals of the run-time
1533 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1534 application of same name on other systems and it provides information
1535 about dynamically linked binaries.
1537 * The C library now provides the run-time support code for profiling
1538 executables compiled with `-pg'. Programs can control the profiling code
1539 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1540 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1541 the support for this file format was contributed by David Mosberger-Tang.
1543 * The math code has been replaced with a math library based on fdlibm from
1544 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1545 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1546 functions. The math functions now reside in a separate library, so
1547 programs using them will need to use `-lm' their linking commands.
1549 * John C. Bowman contributed optimized ix87 assembler inline functions.
1551 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1552 mechanism similar to that found in Solaris 2. This is now used for the
1553 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1554 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1555 file controls what services are used for each individual database. This
1556 works by loading shared libraries with names specified in `nsswitch.conf',
1557 so service modules can be changed or added at any time without even
1558 relinking any program. Currently there are the file, db, and NIS based
1559 NSS services available.
1561 * The new functions `strtoq' and `strtouq' parse integer values from
1562 strings, like `strtol' and `strtoul', but they return `long long int' and
1563 `unsigned long long int' values, respectively (64-bit quantities).
1565 * The new functions `strtof' and `strtold' parse floating-point values from
1566 strings, like `strtod', but they return `float' and `long double' values,
1567 respectively (on some machines `double' and `long double' are the same).
1569 * Ulrich Drepper has contributed new implementations of the floating-point
1570 printing and reading code used in the `printf' family of functions and
1571 `strtod', `strtof', and `strtold'. These new functions are perfectly
1572 accurate, and much faster than the old ones.
1574 * The implementation of the POSIX locale model was completely rewritten by
1575 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1576 to compile the POSIX locale definition.
1578 * The former dummy implementations of the strcoll and strxfrm function are
1579 now replaced by fully functional code contributed by Ulrich Drepper. The
1580 collation information comes from the POSIX locale definitions.
1582 * The new header <langinfo.h> defines an interface for accessing
1583 various locale-dependent data (using the locale chosen with `setlocale').
1585 * Ulrich Drepper has contributed a new suite of functions for operation on
1586 wide-character and multibyte-character strings, in <wchar.h>;
1587 and classification and case conversion of wide characters, in <wctype.h>.
1588 These new functions are conforming to the ISO C, Amendement 1 specification.
1590 * There is now a second implementation of the standard I/O library available.
1591 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1592 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1594 * You can now use positional parameter specifications in format strings
1595 for the `printf' and `scanf' families of functions. For example,
1596 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1597 ``Number 6, Mr Jones''. This is mainly useful when providing different
1598 format strings for different languages, whose grammars may dictate
1599 different orderings of the values being printed. To support this
1600 feature, the interface for `register_printf_handler' has changed; see
1601 the header file <printf.h> for details.
1603 * The `printf' and `scanf' families of functions now understand a new
1604 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1605 to group numbers as indicated by the locale; for `scanf' and friends, this
1606 says to accept as valid only a number with all the proper grouping
1607 separators in the right places. In the default "C" locale, numbers are
1608 not grouped; but locales for specific countries will define the usual
1609 conventions (i.e. separate thousands with `,' in the US locale).
1611 * The pgrp functions have been regularized, slightly incompatibly but much
1612 less confusingly. The core functions are now `getpgid' and `setpgid',
1613 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1614 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1615 provided for compatibility. There is no longer an incompatible `getpgrp'
1616 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1618 * The new header file <fts.h> and suite of functions simplify programs that
1619 operate on directory trees. This code comes from 4.4 BSD.
1621 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1622 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1623 NSS scheme used in glibc.
1625 * There is a new malloc debugging hook `__memalign_hook'.
1627 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1628 `unsigned int' in <sys/types.h>. These are for compatibility only and
1629 their use is discouraged.
1631 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1632 done differently, so that it works even without GNU ld.
1634 * New function `euidaccess' checks allowed access to a file like `access',
1635 but using the effective IDs instead of the real IDs.
1637 * The time zone data files have been updated for the latest and greatest
1638 local time conventions of the countries of the world.
1640 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1643 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1644 for formatting floating-point numbers. They are provided only for
1645 compatibility; new programs should use `sprintf' instead. There are
1646 also equivalent function for the `long double' floating-point type and
1647 all functions also exist in a reentrant form.
1649 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1650 functions for maintaining the login-record files (primarily of use to
1651 system programs such as `login'), and convenient functions for
1652 allocating and initializing a pseudo-terminal (pty) device.
1654 * Ulrich Drepper has contributed new support for System V style
1655 shared memory and IPC on systems that support it.
1657 * Ulrich Drepper has contributed several miscellaneous new functions found
1658 in System V: The `hsearch' family of functions provide an effective
1659 implementation of hash tables; `a64l' and `l64a' provide a very simple
1660 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1663 * Ulrich Drepper has contributed new reentrant counterparts for the
1664 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1666 * Ulrich Drepper has contributed new, highly-optimized versions of several
1667 string functions for the i486/Pentium family of processors.
1669 * Ulrich Drepper has updated the Linux-specific code, based largely
1670 on work done in Hongjiu Lu's version of GNU libc for Linux.
1671 The GNU library now supports Linux versions 2.0.10 and later,
1672 using the ELF object file format (i[3456]86-*-linux).
1674 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1676 * David Mosberger-Tang and Richard Henderson have ported the C library
1677 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1678 dynamic linking support for ELF/Alpha.
1680 * Richard Henderson contributed several Alpha optimized assembler function
1681 for arithmetic and string handling.
1683 * Ulrich Drepper has contributed a new set of message catalog functions to
1684 support multiple languages using the <libintl.h> interface, for use with
1685 his new package GNU gettext. Translation volunteers have contributed
1686 catalogs of the library's messages in Spanish, German, and Korean.
1688 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1689 program and the `catgets' function for reading the catalog files it
1690 creates. (The <libintl.h> interface is preferred; we include the
1691 <nl_types.h> interface using `catgets' only for source compatibility with
1692 programs already written to use it.)
1694 * New header file <values.h> gives SVID-compatible names for <limits.h>
1697 * Various new macros, declarations, and small header files for compatibility
1700 * New function `group_member' is a convenient way to check if a process has
1701 a given effective group ID.
1703 * When using GCC 2.7 and later, the socket functions are now declared in a
1704 special way so that passing an argument of type `struct sockaddr_in *',
1705 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1706 `struct sockaddr *' type, does not generate a type-clash warning.
1708 * New function `error' declared in header file <error.h> is a convenient
1709 function for printing error messages and optionally exiting; this is the
1710 canonical function used in GNU programs. The new functions `err', `warn',
1711 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1712 doing the same thing.
1714 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1715 POSIX.2 `glob' function to do ~ and {...} expansion.
1717 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1718 `clearenv' which is used in POSIX.9 is also available.
1720 * New function `getsid' returns session ID number on systems that support it.
1722 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1723 files <db.h> and <mpool.h> provide a rich set of functions for several
1724 types of simple databases stored in memory and in files, and <ndbm.h> is
1725 an old `ndbm'-compatible interface using the `db' functions. Link with
1726 `-ldb' to get these functions.
1728 * New macro `strdupa' copies a string like `strdup', but uses local stack
1729 space from `alloca' instead of dynamic heap space from `malloc'.
1731 * New function `strnlen' is like `strlen' but searches only a given maximum
1732 number of characters for the null terminator. `stpncpy', `strndup' and
1733 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1736 * New function `statfs' in header <sys/statfs.h>.
1738 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1739 provide convenient functions for operating on blocks of null-terminated
1742 * A new suite of functions in <utmp.h> handle all the details of reading
1743 and writing the utmp file.
1745 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1748 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1749 completely POSIX compliant and also implemented the extended functionality
1750 to handle alternate digit representation and alternate era date formats.
1752 * Ulrich Drepper provided an implementation of the `strptime' function
1753 defined in XPG4.2 which transforms a string into a `struct tm' value.
1755 * Paul Eggert provided the tzselect shell script as part of the timezone
1756 code. The shell script makes it easy to select the correct timezone
1759 * The implementation of the malloc family of functions is completely replaced
1760 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1761 The implementation uses the mmap function (if available) and it is
1762 optimized for the use in multi threaded programs.
1764 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1765 functions. This new functionality is usable by specifying a special
1766 salt string and it is compatible with implementation on *BSD systems.
1768 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1769 `getsubopt' to handle second level command line options, `bsd_signal'
1770 to access BSD style `signal' functionality, the obsolete `regexp' style
1773 * the `lchown' function is available on system which support this
1776 * The implementation of the shadow password handling function was contributed
1779 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1781 * POSIX.1g support was added. The <sys/select.h> header is available,
1782 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1783 implementation of `getaddrinfo'.
1787 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1789 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1790 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1792 * The new function `daemon' from 4.4 BSD is useful for server programs that
1793 want to put themselves in the background.
1795 * Joel Sherrill has contributed support for several standalone boards that
1796 run without an operating system.
1798 * `printf', `scanf' and friends now accept a `q' type modifier for long
1799 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1801 * All of the code taken from BSD (notably most of the math and networking
1802 routines) has been updated from the BSD 4.4-Lite release.
1804 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1806 * The new functions `getdomainname' and `setdomainname' fetch or change the
1807 YP/NIS domain name. These are system calls which exist on systems which
1810 * The time zone data files have been updated for the latest international
1813 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1814 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1818 * The C library now includes support for Sun RPC, from Sun's free
1819 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1820 are included. (There is still no support for YP.)
1822 * Tom Quinn has contributed a port of the C library to SGI machines running
1823 Irix 4 (mips-sgi-irix4).
1825 * The new `lockf' function is a simplified interface to the locking
1826 facilities of `fcntl', included for compatibility.
1828 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1830 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1832 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1835 * The error message printed by `assert' for a failed assertion now includes
1836 the name of the program (if using GNU ld) and the name of the calling
1837 function (with versions of GCC that support this).
1839 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1841 * The library now includes the <sys/mman.h> header file and memory
1842 management functions `mmap', `munmap', `mprotect', `msync', and
1843 `madvise', on systems that support those facilities.
1845 * The interface for `mcheck' has changed slightly: the function called to
1846 abort the program when an allocation inconsistency is detected now takes
1847 an argument that indicates the type of failure. The new function
1848 `mprobe' lets you request a consistency check for a particular block at
1849 any time (checks are normally done only when you call `free' or `realloc'
1852 * It is now possible to easily cross-compile the C library, building on one
1853 system a library to run on another machine and/or operating system. All
1854 you need to do is set the variable `HOST_CC' in `configparms' to the
1855 native compiler for programs to run on the machine you are building on (a
1856 few generator programs are used on Unix systems); set `CC' to the
1859 * The new function `fexecve' (only implemented on the GNU system) executes
1860 a program file given a file descriptor already open on the file.
1864 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1865 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1867 * You can set the variable `libprefix' in `configparms' to specify a prefix
1868 to be prepended to installed library files; this makes it easy to install
1869 the GNU C library to be linked as `-lgnuc' or whatever.
1871 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1872 copies a limited number of characters from a string, and returns the
1873 address of the last character written.
1875 * You no longer need to check for whether the installed `stddef.h' is
1876 compatible with the GNU C library. configure now checks for you.
1878 * You can now define a per-stream `fileno' function to convert the
1879 stream's cookie into an integral file descriptor.
1881 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1882 allocates zero bytes of storage, and returns a unique pointer which
1883 you can pass to `realloc' or `free'. The behavior is undefined if
1884 you dereference this pointer.
1886 * The C library now runs on Sony NEWS m68k machines running either
1887 NewsOS 3 or NewsOS 4.
1889 * The new `syscall' function is a system-dependent primitive function
1890 for invoking system calls. It has the canonical behavior on Unix
1891 systems, including unreliable return values for some calls (such as
1892 `pipe', `fork' and `getppid').
1894 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1895 to `EAGAIN', which is the preferred name. On systems whose kernels
1896 use two distinct codes, the C library now translates EWOULDBLOCK to
1897 EAGAIN in every system call function.
1901 * The GNU C Library Reference Manual is now distributed with the library.
1902 `make dvi' will produce a DVI file of the printed manual.
1903 `make info' will produce Info files that you can read on line using C-h i
1904 in Emacs or the `info' program.
1905 Please send comments on the manual to bug-glibc-manual@gnu.org.
1907 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1909 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1911 * Jason Merrill has contributed a port to the Sequent Symmetry running
1912 Dynix version 3 (i386-sequent-dynix).
1914 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1915 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1917 * New function `memory_warnings' lets you arrange to get warnings when
1918 malloc is running out of memory to allocate, like Emacs gives you.
1920 * The C library now contains the relocating allocator used in Emacs 19 for
1921 its editing buffers. This allocator (ralloc) minimizes allocation
1922 overhead and fragmentation by moving allocated regions around whenever it
1923 needs to. You always refer to a ralloc'd region with a "handle" (a
1924 pointer to a pointer--an object of type `void **').
1926 * There is a new `printf' format: `%m' gives you the string corresponding
1927 to the error code in `errno'.
1929 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1930 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1931 pass, the `a' modifier says to fill in a `char **' you pass with a
1934 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1935 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1936 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1938 * `mkstemp' is a traditional Unix function to atomically create and open a
1939 uniquely-named temporary file.
1943 * The standard location for the file that says what the local timezone is
1944 has changed again. It is now `/usr/local/etc/localtime' (or more
1945 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1947 * The distribution no longer contains any files with names longer than 14
1950 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1951 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1953 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1957 * The configuration process has changed quite a bit. The `configure'
1958 script is now used just like the configuration scripts for other GNU
1959 packages. The `sysdeps' directory hierarchy is much rearranged.
1960 The file `INSTALL' explains the new scheme in detail.
1962 * The header files no longer need to be processed into ANSI C and
1963 traditional C versions. There is just one set of files to install, and
1964 it will work with ANSI or old C compilers (including `gcc -traditional').
1966 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1967 MIPS DECStation running Ultrix 4.
1969 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1970 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1971 made itself into a shared library.
1973 * Yet further improved support for the i386, running 4.3 BSD-like systems
1974 (such as Mach 3 with the Unix single-server), or System V.
1976 * New function `strncasecmp' to do case-insensitive string comparison
1977 with limited length.
1979 * New function `strsep' is a reentrant alternative to `strtok'.
1981 * New functions `scandir' and `alphasort' for searching directories.
1983 * New function `setenv' is a better interface to `putenv'.
1985 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1986 function for traversing a directory tree.
1988 * The GNU obstack package is now also part of the C library.
1989 The new function `open_obstack_stream' creates a stdio stream that
1990 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1991 formatted output directly to an obstack.
1993 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1994 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1996 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1998 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1999 things to your strings.
2001 * There are some new test programs: test-fseek, testmb, and testrand.
2003 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2004 These ports are not finished, but are a good starting place for really
2005 supporting those systems.
2007 * `/etc/localtime' is now the standard location for the file that says what
2008 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2009 This follows the general principle that `/etc' is the place for all local
2010 configuration files.
2012 * The C library header files now use `extern "C"' when used by the C++
2013 compiler, so the C library should now work with C++ code.
2015 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2016 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2019 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2020 function which uses the `merge sort' algorithm, and is said to be
2021 significantly faster than the old GNU `qsort' function. Merge sort is
2022 now the standard `qsort' function. The new algorithm can require a lot
2023 of temporary storage; so, the old sorting function is called when the
2024 required storage is not available.
2026 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2027 provides the Unix `crypt' function, plus some other entry points.
2029 * The code and header files taken from 4.4 BSD have been updated with the
2030 latest files released from Berkeley.
2032 ----------------------------------------------------------------------
2033 Copyright information:
2035 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2037 Permission is granted to anyone to make or distribute verbatim copies
2038 of this document as received, in any medium, provided that the
2039 copyright notice and this permission notice are preserved,
2040 thus giving the recipient permission to redistribute in turn.
2042 Permission is granted to distribute modified versions
2043 of this document, or of portions of it,
2044 under the above conditions, provided also that they
2045 carry prominent notices stating who last changed them.
2048 version-control: never
projects / platform / upstream / glibc.git / blob