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, 13750,
22 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806, 13824, 13840,
23 13841, 13844, 13846, 13851, 13852, 13854, 13871, 13872, 13873, 13879,
24 13883, 13884, 13885, 13886, 13892, 13895, 13908, 13910, 13911, 13912,
25 13913, 13914, 13915, 13916, 13917, 13918, 13919, 13920, 13921, 13922,
26 13923, 13924, 13926, 13927, 13928, 13938, 13941, 13942, 13954, 13955,
27 13956, 13963, 13967, 13970, 13973, 13979, 13983, 14012, 14027, 14033,
28 14034, 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.
67 * Compatibility code for Linux kernel versions before 2.2 has been removed.
68 Note that glibc is not expected to work with any Linux kernel version
73 * The following bugs are resolved with this release:
75 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
76 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
77 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
78 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
79 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
80 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
81 13484, 13506, 13515, 13523, 13524, 13538, 13540
83 * New program pldd to list loaded object of a process
84 Implemented by Ulrich Drepper.
86 * Add nss_db support back to glibc. No more dependency on Berkeley db
87 and support for initgroups lookups.
88 Implemented by Ulrich Drepper.
90 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
93 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
96 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
98 Contributed by Liubov Dmitrieva.
100 * Optimized strchr and strrchr for SSE on x86-32.
101 Contributed by Liubov Dmitrieva.
103 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
104 for x86-64 and x86-32.
105 Contributed by Liubov Dmitrieva.
107 * New interfaces: scandirat, scandirat64
108 Implemented by Ulrich Drepper.
110 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
111 Implemented by Ulrich Drepper.
113 * nscd now also caches the netgroup database.
114 Implemented by Ulrich Drepper.
116 * Integrate libm with gcc's -ffinite-math-only option.
117 Implemented by Ulrich Drepper.
119 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
120 to math functions. Implemented by Ulrich Drepper.
122 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
123 Implemented by Ulrich Drepper.
125 * New Linux interfaces: process_vm_readv, process_vm_writev
127 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
128 Implemented by Ulrich Drepper.
130 * Optimized nearbyint and strcasecmp for PPC.
131 Implemented by Adhemerval Zanella.
133 * New locales: bho_IN, unm_US, es_CU, ta_LK
137 * The following bugs are resolved with this release:
139 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
140 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
141 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
142 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
143 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
144 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
145 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
146 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
147 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
148 12795, 12811, 12813, 12814, 12841
150 * The RPC implementation in libc is obsoleted. Old programs keep working
151 but new programs cannot be linked with the routines in libc anymore.
152 Programs in need of RPC functionality must be linked against TI-RPC.
153 The TI-RPC implementation is IPv6 enabled and there are other benefits.
155 Visible changes of this change include (obviously) the inability to link
156 programs using RPC functions without referencing the TI-RPC library and the
157 removal of the RPC headers from the glibc headers.
158 Implemented by Ulrich Drepper.
160 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
161 syncfs, setns, sendmmsg
163 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
164 yue_HK, lij_IT, mhr_RU
166 * New encodings: CP770, CP771, CP772, CP773, CP774
168 * New program sotruss to trace calls through PLTs
169 Implemented by Ulrich Drepper.
171 * The malloc hook implementation is marked deprecated and will be removed
172 from the default implementation in the next version. The design never
173 worked ever since the introduction of threads. Even programs which do
174 not create threads themselves can use multiple threads created internally.
178 * The following bugs are resolved with this release:
180 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
181 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
182 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
183 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
186 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
188 * POWER7 optimizations: memset, memcmp, strncmp
190 * New optimized string functions for x86-64: strnlen (SSE2),
191 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
192 Implemented by Ulrich Drepper.
196 * The following bugs are resolved with this release:
198 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
199 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
200 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
201 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
202 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
203 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
204 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
205 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
207 * New interfaces: pthread_getname_np, pthread_setname_np
209 * New Linux interface: recvmmsg
211 * STT_GNU_IFUNC implemented for Sparc by David Miller.
213 * The dynamic linker now recognizes supported ABI versions from the
214 EI_ABIVERSION field in the ELF header.
215 Implemented by Ulrich Drepper.
217 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
218 will not be used to fill in password fields in the passwd.byname replies.
219 Instead it is used to synthesize the shadow.byname table, should it be
220 missing. This is a useful mode in some installations involving Solaris.
221 Implemented by Ulrich Drepper.
223 * New locales: kok_IN, sq_MK, cv_RU
227 * The following bugs are resolved with this release:
229 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
230 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
231 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
232 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
233 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
234 10789, 10817, 10823, 10840, 10847
236 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
238 Implemented by Ulrich Drepper.
240 * Checking version of longjmp added that fails if an uninitialized stack
241 frame would be created. Implemented by Ulrich Drepper.
243 * STT_GNU_IFUNC is now supported in static executables.
244 Implemented by H.J. Lu.
246 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
248 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
249 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
250 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
251 Contributed by H.J. Lu.
253 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
254 Implemented by Ulrich Drepper.
256 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
258 Contributed by H.J. Lu.
260 * Support for fma instruction in AVX on x86-64.
261 Implemented by H.J. Lu and Ulrich Drepper.
263 * AVX support in x86-64 auditing support in ld.so.
264 Implemented by H.J. Lu.
266 * STB_GNU_UNIQUE support added.
267 Implemented by Ulrich Drepper.
269 * Implement second fallback mode for optimized DNS lookup for even more
270 broken environments. If two requests from the same port are not
271 handled correctly close the socket and open a new one before sending
272 the second request. The 'single-request-reopen' option in /etc/resolv.conf
273 can be used to select this mode right away, instead of rediscovering the
274 necessity is every process again.
275 Implemented by Ulrich Drepper.
277 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
278 Implemented by Adam Tkac.
280 * Optimized iconv conversions for S390x.
281 Implemented by Andreas Krebbel.
283 * Using condvars with PI mutexes is now more efficient due to kernel
284 support for requeueing to PI futexes. NPTL support added for x86-64.
285 Implemented by Ulrich Drepper.
287 * New locales: ps_AF, my_MM
291 * The following bugs are resolved with this release:
293 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
294 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
295 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
296 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
297 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
299 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
300 Implemented by Ulrich Drepper.
302 * New Linux interfaces: accept4, fallocate, fallocate64.
303 Implemented by Ulrich Drepper.
305 * Correct declarations of string function when used in C++ code. This
306 could lead to compile errors for invalid C++ code.
308 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
311 * New POSIX 2008 interface: psiginfo
312 Implemented by Ulrich Drepper.
314 * New ISO C++1x interfaces: quick_exit, at_quick_exit
315 Implemented by Ulrich Drepper.
317 * Support for selecting between multiple function definitions at runtime
318 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
320 * The libcrypt library can now use the hash function implementations in
321 NSS. Implemented by Ulrich Drepper.
323 * The malloc implementation can be compiled to be less memory efficient
324 but higher performing in multi-threaded programs.
325 Implemented by Ulrich Drepper.
327 * New locales: nan_TW@latin, ks_IN
329 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
330 Implemented by Ulrich Drepper.
332 * Extended printf hook support. It is possible to use user-defined types
333 and extend existing format specifiers.
334 Implemented by Ulrich Drepper.
336 * Handling for group shadow files has been added.
337 Implemented by Ulrich Drepper.
339 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
340 servers (the case, e.g., for some people using the built-in DNS
341 server in ADSL modems/routers). There is a once-per-process timeout
342 in case of a broken server. To avoid it, users can run nscd or put
343 'options single-request' in /etc/resolv.conf.
344 Implemented by Ulrich Drepper.
348 * The following bugs are resolved with this release:
350 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
351 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
352 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
353 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
354 6968, 6974, 6980, 6995, 7008, 7009, 7029
356 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
357 up at the same time. Implemented by Ulrich Drepper.
359 * TLS descriptors for LD and GD on x86 and x86-64.
360 Implemented by Alexandre Oliva.
362 * getaddrinfo now handles DCCP and UDPlite.
363 Implemented by Ulrich Drepper.
365 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
366 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
367 Implemented by Ulrich Drepper.
369 * New implementation of memmem, strstr, and strcasestr which is O(n).
370 Implemented by Eric Blake.
372 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
374 * Implement "e" option for popen to open file descriptor with the
375 close-on-exec flag set. Implemented by Ulrich Drepper.
377 * Implement "b" mode for fmemopen. In this mode writes writes don't
378 implicitly add a NUL byte and seeks from the end of the buffer really
379 use the buffer end, not the string length as the basis.
380 Implemented by Ulrich Drepper.
382 * Many functions, exported and internal, now atomically set the close-on-exec
383 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
385 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
387 Implemented by Pravin Satpute.
389 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
393 * The following bugs are resolved with this release:
395 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
396 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
397 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
398 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
399 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
400 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
401 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
403 * New locales: bo_CN, bo_IN, shs_CA.
405 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
407 * Sorting rules for some Indian languages (Devanagari and Gujarati).
408 Implemented by Pravin Satpute.
410 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
412 * nscd caches now all timeouts for DNS entries
413 Implemented by Ulrich Drepper.
415 * nscd is more efficient and wakes up less often.
416 Implemented by Ulrich Drepper.
418 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
419 vdprintf, and obstack_vprintf.
420 Implemented by Jakub Jelinek.
422 * Faster memset for x86-64.
423 Implemented by Harsha Jagasia and H.J. Lu.
425 * Faster memcpy on x86.
426 Implemented by Ulrich Drepper.
428 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
429 Implemented by Ulrich Drepper.
431 * Faster sqrt and sqrtf implemention for some PPC variants.
432 Implemented by Stephen Munroe.
436 * The following bugs are resolved with this release:
438 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
439 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
440 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
441 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
442 5071, 5103, 5104, 5112, 5113, 5184, 5186
444 * More checking functions: fread, fread_unlocked, open*, mq_open.
445 Implemented by Jakub Jelinek and Ulrich Drepper.
447 * Extend fortification to C++. Implemented by Jakub Jelinek.
449 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
450 by not recognizing 'a' as a modifier when those specs are requested.
451 Implemented by Jakub Jelinek.
453 * PPC optimizations to math and string functions.
454 Implemented by Steven Munroe.
456 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
457 options to be passed. Implemented by Ulrich Drepper.
459 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
461 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
462 Implemented by Ulrich Drepper.
464 * Handle private futexes in the NPTL implementation.
465 Implemented by Jakub Jelinek and Ulrich Drepper.
467 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
468 Implemented by Roland McGrath and Ulrich Drepper.
470 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
472 * SHA-256 and SHA-512 based password encryption.
473 Implemented by Ulrich Drepper.
475 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
476 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
479 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
480 Implemented by Ulrich Drepper.
484 * The following bugs are resolved with this release:
486 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
487 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
488 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
489 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
490 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
491 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
492 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
495 * New Linux interfaces: epoll_pwait, sched_getcpu.
497 * New generic interfaces: strerror_l.
499 * nscd can now cache the services database. Implemented by Ulrich Drepper.
503 * The following bugs are resolved with this release:
505 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
506 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
507 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
508 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
509 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
510 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
511 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
512 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
513 3225, 3251, 3252, 3253, 3273
515 * For Linux, the sorting of addresses returned by getaddrinfo now also
516 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
517 Implemented by Ulrich Drepper.
519 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
520 Implemented by Ulrich Drepper.
522 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
524 * New iconv module for MIK. Contributed by Alexander Shopov.
526 * For sites with broken group and/or passwd database, the auto-propagate
527 option of nscd can prevent creating ID lookup entries from the results
528 of a name lookup and vice versa. This usually is no problem but some
529 site might have problems with the default behavior.
530 Implemented by Ulrich Drepper.
532 * Iterating over entire database in NIS can be slow. With the
533 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
534 to trade time for memory. The entire database will be read at once.
535 Implemented by Ulrich Drepper.
537 * The interfaces introduced in RFC 3542 have been implemented by
540 * Support for the new ELF hash table format was added by Ulrich Drepper.
542 * Support for priority inheritance mutexes added by Jakub Jelinek and
545 * Support for priority protected mutexes added by Jakub Jelinek.
547 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
548 or_IN, csb_PL, fy_NL, sr_ME.
552 * More overflow detection functions.
554 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
555 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
557 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
558 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
559 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
560 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
561 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
562 by Masahide Washizawa.
564 * It is now possible to install audit libraries for the dynamic linker using
565 LD_AUDIT. Implemented by Ulrich Drepper.
567 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
568 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
569 For a libc and libpthread that works well on Linux 2.4 kernels, we
570 recommend using the stable 2.3 branch.
572 * The new function open_wmemstream acts like open_memstream,
573 but uses a wchar_t wide character buffer.
575 * The new function ppoll is an improved version of poll, similar to pselect.
577 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
578 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
579 renameat, unlinkat, linkat, symlinkat, readlinkat.
581 * New Linux kernel system calls: unshare,
582 inotify_init, inotify_add_watch, inotify_rm_watch.
584 * The euidaccess function is now also known by the alias eaccess,
585 for compatibility with some other systems.
587 * Timezone data updated to 2006b version.
591 * The following bugs are resolved with this release:
593 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
594 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
595 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
596 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
597 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
598 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
600 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
602 * As of this release, GCC 4 can be used to compile the C Library.
604 * Timezone data updated to 2005m version.
608 * The following bugs are resolved with this release:
610 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
611 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
612 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
613 777, 787, 821, 822, 823, 825
615 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
619 * Support for RFC 3678. Real implementations exist only for Linux so far.
620 Implemented by Ulrich Drepper.
622 * nscd can now cache entries persistently. Expiring entries are reloaded.
623 For speedups the cache can be shared in memory with client processes.
624 Implemented by Ulrich Drepper.
626 * nscd can now perform SELinux checks.
627 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
629 * getaddrinfo queries are now cached. Canonical name lookup is performed
631 Implemented by Ulrich Drepper.
633 * The nothrow function attribute is used when headers are used by gcc when
634 compiling C code. This can avoid significant amounts of exception
637 * The malloc functions perform more error checking and are stricter when
638 it comes to reacting on errors. The default action is to terminate
639 the process after showing an error message. Implemented by Ulrich Drepper.
641 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
642 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
644 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
645 namespaces using the new function dlmopen(). This feature is of course,
646 like most other dynamic loading functionality, not available in statically
647 linked applications. Implemented by Ulrich Drepper.
649 * Low-overhead boundary checking variants of string and some stdio functions
650 were added. These are to be used in conjunction with a gcc patch by
651 Jakub Jelinek which adds calls to these functions if possible.
652 Implemented by Jakub Jelinek and Ulrich Drepper.
654 * Old code for several operating systems and machine architectures that
655 have not been in working condition in a long time have been removed from
656 the main source tree maintained by the GNU C Library's maintainers.
657 These files are now reside in the separate `ports' source module
658 that is usable as an add-on when building the library.
662 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
663 interrogate the dynamic linker, compatible with the Solaris interface.
665 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
666 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
668 * getifaddrs now uses the netlink interface on Linux to get its information.
669 Implemented by Thorsten Kukuk.
671 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
672 Implemented by Ulrich Drepper.
674 * support for non-executable stacks on x86 has been added. Changes mostly
677 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
680 * getaddrinfo now performs destination address selection according to
685 * Thread-safe interfaces for many functions that access locale data
686 were added in version 2.3, but these features were omitted from NEWS.
687 Many functions have variants with an `_l' suffix that take a `locale_t'
688 object as a parameter rather than consulting the current locale.
689 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
690 create and maintain `locale_t' objects. Additionally, the new function
691 `uselocale' sets "the current locale" (as used by functions not so
692 parameterized) set for an individual thread. These features were added
693 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
695 * The functions getresuid, getresgid, setresuid, and setresgid, which
696 have long been available on Linux, are now declared in <unistd.h>
697 and are now also available on the Hurd.
699 * ELF thread-local storage support (TLS) now works on x86-64.
701 * The new dynamic string token $LIB is expanded in shared library names.
702 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
704 * Aldy Hernandez contributed complete software floating point support for
705 PowerPC machines with no FPU.
707 * fexecve is implemented on Linux.
709 * The `btowc' function should work at least twice as fast due to
710 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
712 * With approriate thread add-ons cancelable functions are now implemented
713 in libc.so as well. No need to call the function in libpthread. This
714 change allowed to finally disable the incorrect and expensive handling
715 of weak definition in ld.so.
717 * Yet more PLT entries in libc.so have been removed. We finally arrived
718 at the bare minimum. Startup times improved appropriately.
720 * Support for the new Linux/x86 system call interface was added. The
721 AT_SYSINFO auxiliary vector entry is recognized and handled.
725 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
728 * iconv (the program and the interface) now accepts empty names (excluding
729 options like //TRANSLIT) to mean "use charset of current locale".
731 * localedef can now transliterate characters in strings which are not in
732 the provided charmap. The information from the input locale is used.
734 * Prelinking support was added for ELF targets. This requires additional
735 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
737 * Read-only stdio streams now use mmap to speed up operation by eliminating
738 copying and buffer underflows. To use add 'm' to the mode string of
739 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
741 * The malloc functions were completely rewritten by Wolfram Gloger based
742 on Doug Lea's malloc-2.7.0.c.
744 * Isamu Hasegawa contributed a completely new and POSIX-conformant
745 implementation of regex.
747 * Bruno Haible upgraded the iconv and locale implementation to support
750 * Contents of the LC_* and LANG environment variables in the CEN style are
751 not recognized anymore. It never was used. Change by Ulrich Drepper.
753 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
754 thread-local storage (TLS) ABI on some platforms.
755 Changes by Ulrich Drepper. SH support by Kaz Kojima.
757 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
758 EUC-JISX0213, and TSCII.
760 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
761 BSD-compatible interface for getting all network interface addresses.
762 Implementation for IPv4 by Roland McGrath.
764 * Loading of locale data is faster due to the introduction of a locale
765 archive. Implemented by Roland McGrath and Ulrich Drepper.
767 * Startup times are significantly reduced by not using exported functions
768 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
771 * Steven Munroe contributed a port to PowerPC64/Linux.
775 * The Hurd now uses the GNU libio implementation of stdio rather than the
776 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
778 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
779 with the same behavior as the Linux system call of the same name.
783 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
784 128-bit long double format.
786 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
787 IBM1161, and IBM1162 charsets.
789 * Andreas Jaeger contributed a port to x86-64/Linux.
791 * Peter Bruin contributed a port to PowerPC/Hurd.
793 * libc functions using I/O streams now can handle wide-oriented streams
796 * optimizations in the dynamic linker. Binaries created by recent binutils
797 versions start up quicker due to reduced time spent on relocations.
799 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
803 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
804 asinh, atanh, j0 for the 128-bit long double format.
806 * Bruno Haible updated all the code handling Unicode in some form to
809 * Speed of regex for single-byte locales is back to previous levels.
810 Patch by Isamu Hasegawa.
812 * Alpha, SPARC, and IA-64 now also using floating stacks.
814 * Startup time of internationalized applications greatly improved through
815 iconv cache. Use iconvconfig to generate the cache file.
816 Contributed by Ulrich Drepper.
818 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
819 severe performance problems. Patch by David Mosberger.
821 * The Hurd port got a lot more functionality like AIO, various stdio
822 extensions, etc. Mainly done by Roland McGrath.
824 * mtrace can now lookup symbols in shared libraries.
828 * Intel's IA-64 math library is largely integrated. It provides fast and
829 accurate implementatations for most basic and standard math functions
830 in float, double, and long double format.
832 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
833 and asin for the 96-bit long double format and asin, log, tan for the
834 128-bit long double format.
836 * The beginning of a last-bit accurate math library by IBM Haifa were added.
837 The basic double functions exist today. Contributed by Abraham Ziv
838 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
839 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
841 * An asynchronous name lookup library was added. The interface is designed
842 after POSIX AIO. The proposal was circulated beforehand to get comments.
843 No negative ones came in. Implemented by Ulrich Drepper.
845 * Port to S390/64bit contributed by Martin Schwidefsky
846 <schwidefsky@de.ibm.com>.
848 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
849 of functions for Linux/IA-64.
851 * The RPC code is now thread safe. Threads can now use the same service
852 of different services at the same time. Patch by Eric Norum
853 <eric.norum@usask.ca> with some help by Ulrich Drepper.
855 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
856 family of functions for Linux/S390.
858 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
859 of functions for Linux/x86.
861 * Port to Linux/CRIS contributed by Axis Communications.
865 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
866 we can now check for namespace violations and missing declarations. The
867 result is that almost all headers are now Unix-compliant (as defined in
868 the upcoming XPG6). The negative side is that some programs might need
869 corrections, too, if they depend on the incorrect form of the headers in
870 previous versions which defined too many symbols and included too many
873 * regex now handles multibyte character sets correctly.
874 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
876 * iconv (the program) does now conform to the upcoming XPG6 and handles
877 charmaps. Instead of the charset names the path of charmaps can be
878 provided and the conversion happens based on this data.
879 Contributed by Ulrich Drepper.
881 * The locale program now provides detailed information about the installed
886 only lists the names of the supported locales
890 provides details such as country, language, and codeset name.
891 Contributed by Ulrich Drepper.
895 * The gencat program now parses the input file according to the charset
896 selected by the LC_CTYPE category. This is important for stateful
897 character sets. To make generating catalogs easier there is a way
898 to overwrite the charset selected by the locale: before the first
899 message or $ quote line the catalog can contain a line like
903 to select the charset (ISO-8859-2 in this case).
905 Implemented by Shinya Hanataka and Ulrich Drepper.
907 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
908 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
909 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
911 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
912 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
914 * The LANGUAGE environment variable is now ignored unless the locale is
915 changed from the default "C" locale.
917 * The usual bug fixes.
921 * Greg McGary added runtime support for bounds checking using gcc's
922 new -fbounded-pointers option. ix86 target is complete. PowerPC
925 * Thorsten Kukuk added secure mode support to nscd.
927 * The Berkeley db libraries have been removed.
929 Related, the nss_db module is now in a separate package since it
930 obviously requires a database library being available.
932 * Wide character I/O streams implemented by Ulrich Drepper.
934 * Functions from the extended socket API added by Ulrich Drepper.
936 * Functions feenableexcept and fedisableexcept to control the
937 behaviour of individual exceptions have been added by Andreas Jaeger.
939 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
941 * The resolver code has been updated from bind 8.2.3-T5B which supports
942 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
945 This change could in some situations effect backward compatibility. Since
946 now `_res' is a thread-local instead of a global variable, modifying it
947 in one thread does not have any effect in other threads.
949 The resolver library was also extended to allow IPv6 as the transport
950 protocol for the requests. This work was done by Stig Venaas.
952 * Compatibility code for K&R C compilers has been removed from the
953 header files. A ISO C compiler is needed to use the library
954 (conforming to either C89 or C99 standard).
956 * Complete rewrite of the localedef program to support multibyte character
957 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
958 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
959 Implemented by Ulrich Drepper.
961 Bruno Haible significantly improved the generation and use of the data
962 structures for the wide character tables.
964 * Plural handling in gettext implemented by Ulrich Drepper.
966 * The utmp daemon has been removed.
968 * The port to MIPS-Linux has been finished by Andreas Jaeger.
970 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
973 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
975 * POSIX barriers implemented by Kaz Kylheku.
977 * POSIX spawn function family implemented by Ulrich Drepper.
979 * POSIX spinlocks are now available.
981 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
983 * the configure option --enable-kernel=X.Y.Z allows to strip out
984 compatibility for kernel versions before X.Y.Z. This is currently only
985 implemented for Linux.
987 * the sockaddr_in6 structure changed. The IPv6 working group added a new
988 field sin6_scope_id. This means that all programs using IPv6 should be
989 recompiled. Don't expect binary compatibility with previous glibc
992 * various conversion modules for IBM character sets contributed by
995 * IA-64 port by Jes Sorensen and HJ Lu.
1009 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1011 * New xdr functions are added; some rpc functions are now 64bit clean.
1013 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1015 * Fixed known incompatibilities with glibc 2.0.
1017 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1019 * Optimized a number of functions (especially the ELF dynamic loader).
1021 * Update timezone data files.
1023 * lots of charmaps corrections
1025 * some new locale definitions and charmaps
1030 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1031 conform to POSIX member type requirements. Symbol versions have been
1032 adjusted as needed within the library, and for direct use by applications,
1033 but there is potential for problems if third-party libraries use
1034 struct timeval as part of their interface. This does not present
1035 a problem for X and other "essential" system libraries.
1037 * An additional locale model to support C++ Standard Library locale
1038 model and probably more was implemented by Ulrich Drepper.
1040 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1043 * Miles Bader provided the `argp' function family to support hierachical
1044 command line argument parsing, layered on top of getopt.
1046 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1048 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1051 * scanf recognizes the %a and %A format for scanning floating point numbers.
1053 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1054 information and interfaces for the available integer types.
1056 * about 130 new math functions were added to implement the ISO C9x math
1059 * the new header <complex.h> contains definitions of the complex math
1060 functions from ISO C 9X.
1062 * the new header <tgmath.h> defines generic macros to use complex or
1063 real valued functions.
1065 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1067 * Andreas Jaeger provided a test suite for the math library.
1069 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1071 * Ulrich Drepper added character set conversion functions (iconv).
1073 * Optimized string functions have been added.
1075 * The localedata addon is now part of glibc.
1077 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1079 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1080 daemon for NSS (nscd).
1082 Missing a better place here are some numbers on improvements. Under
1083 Linux 2.1.125 un-tar-ing the kernel sources takes
1087 using local files 12.19s 6.88s 22.91s
1089 using NIS 13.92s 8.91s 26.34s
1091 using NIS & nscd 10.37s 7.34s 25.30s
1093 using NIS+ 27.57s 30.37s 640.46s
1095 using NIS+ & nscd 10.25s 7.83s 26.51s
1097 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1099 Keep in mind that non-namelookup related operations dominate above times.
1100 It was just a common complain that using NIS+ unpacking the kernel is
1103 [1] The old nscd implementation is not available anymore since it was
1104 distributed with glibc up to version 2.0.98 and thus is now replaced.
1106 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1108 * Mark Kettenis provided a Hesiod NSS module.
1110 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1111 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1113 * rcmd can now handle netgroups (Dick Streefland).
1115 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1118 * Support for the IPv6 protocol has been added to the socket API, as per the
1119 latest draft standards.
1121 * Support for Linux 2.2 has been added.
1123 * Interface changes relative to the latest 2.0.x release:
1124 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1125 addseverity NEW: Unix98
1126 alphasort64 NEW: LFS
1127 argp_err_exit_status NEW: argp, GNU ext
1128 argp_error NEW: argp, GNU ext
1129 argp_failure NEW: argp, GNU ext
1130 argp_help NEW: argp, GNU ext
1131 argp_parse NEW: argp, GNU ext
1132 argp_program_bug_address NEW: argp, GNU ext
1133 argp_program_version NEW: argp, GNU ext
1134 argp_program_version_hook NEW: argp, GNU ext
1135 argp_state_help NEW: argp, GNU ext
1136 argp_usage NEW: argp, GNU ext
1137 authdes_create NEW: Secure RPC
1138 authdes_getucred NEW: Secure RPC
1139 authdes_pk_create NEW: Secure RPC
1140 backtrace NEW: GNU ext.
1141 backtrace_symbols NEW: GNU ext.
1142 backtrace_symbols_fd NEW: GNU ext.
1144 cacosf NEW: ISO C 9x
1145 cacosh NEW: ISO C 9x
1146 cacoshf NEW: ISO C 9x
1147 cacoshl NEW: ISO C 9x
1148 cacosl NEW: ISO C 9x
1155 casinf NEW: ISO C 9x
1156 casinh NEW: ISO C 9x
1157 casinhf NEW: ISO C 9x
1158 casinhl NEW: ISO C 9x
1159 casinl NEW: ISO C 9x
1161 catanf NEW: ISO C 9x
1162 catanh NEW: ISO C 9x
1163 catanhf NEW: ISO C 9x
1164 catanhl NEW: ISO C 9x
1165 catanl NEW: ISO C 9x
1166 cbc_crypt NEW: Secure RPC
1170 ccoshf NEW: ISO C 9x
1171 ccoshl NEW: ISO C 9x
1177 cimagf NEW: ISO C 9x
1178 cimagl NEW: ISO C 9x
1179 clearerr_locked REMOVED
1180 clntunix_create NEW: sunrpc ext
1182 clog10 NEW: ISO C 9x
1183 clog10f NEW: ISO C 9x
1184 clog10l NEW: ISO C 9x
1194 cprojf NEW: ISO C 9x
1195 cprojl NEW: ISO C 9x
1197 crealf NEW: ISO C 9x
1198 creall NEW: ISO C 9x
1203 csinhf NEW: ISO C 9x
1204 csinhl NEW: ISO C 9x
1207 csqrtf NEW: ISO C 9x
1208 csqrtl NEW: ISO C 9x
1212 ctanhf NEW: ISO C 9x
1213 ctanhl NEW: ISO C 9x
1215 des_setparity NEW: Secure RPC
1216 ecb_crypt NEW: Secure RPC
1217 endutxent NEW: Unix98
1219 exp10f NEW: ISO C 9x
1220 exp10l NEW: ISO C 9x
1224 fattach NEW: STREAMS
1225 fdetach NEW: STREAMS
1229 feclearexcept NEW: ISO C 9x
1230 fegetenv NEW: ISO C 9x
1231 fegetexceptflag NEW: ISO C 9x
1232 fegetround NEW: ISO C 9x
1233 feholdexcept NEW: ISO C 9x
1235 feraiseexcept NEW: ISO C 9x
1236 ferror_locked REMOVED
1237 fesetenv NEW: ISO C 9x
1238 fesetexceptflag NEW: ISO C 9x
1239 fesetround NEW: ISO C 9x
1240 fetestexcept NEW: ISO C 9x
1241 feupdateenv NEW: ISO C 9x
1242 fflush_locked REMOVED
1246 fgets_unlocked NEW: GNU ext.
1247 fileno_locked REMOVED
1259 fputc_locked REMOVED
1260 fputs_unlocked NEW: GNU ext.
1261 fread_unlocked NEW: GNU ext.
1266 fstatvfs NEW: Unix98
1270 ftruncate64 NEW: LFS
1272 fwrite_unlocked NEW: GNU ext.
1273 gai_strerror NEW: IPv6
1277 getchar_locked REMOVED
1279 getdate_err NEW: Unix98
1280 getdate_r NEW: GNU ext.
1282 getnameinfo NEW: IPv6
1283 getnetname NEW: Secure RPC
1284 getpmsg NEW: STREAMS
1285 getpt NEW: Unix98 PTY
1286 getrlimit64 NEW: LFS
1287 getutxent NEW: Unix98
1288 getutxid NEW: Unix98
1289 getutxline NEW: Unix98
1290 glob64 NEW: GNU ext.
1291 globfree64 NEW: GNU ext.
1292 gnu_get_libc_release NEW: GNU ext.
1293 gnu_get_libc_version NEW: GNU ext.
1294 grantpt NEW: Unix98 PTY
1295 host2netname NEW: Secure RPC
1297 iconv_close NEW: iconv
1298 iconv_open NEW: iconv
1299 if_freenameindex NEW: IPv6
1300 if_indextoname NEW: IPv6
1301 if_nameindex NEW: IPv6
1302 if_nametoindex NEW: IPv6
1303 in6addr_any NEW: IPv6
1304 in6addr_loopback NEW: IPv6
1305 inet6_isipv4mapped NEW: IPv6
1306 isastream NEW: STREAMS
1307 iswblank NEW: GNU ext.
1308 key_decryptsession NEW: Secure RPC
1309 key_decryptsession_pk NEW: Secure RPC
1310 key_encryptsession NEW: Secure RPC
1311 key_encryptsession_pk NEW: Secure RPC
1312 key_gendes NEW: Secure RPC
1313 key_get_conv NEW: Secure RPC
1314 key_secretkey_is_set NEW: Secure RPC
1315 key_setnet NEW: Secure RPC
1316 key_setsecret NEW: Secure RPC
1317 llrint NEW: ISO C 9x
1318 llrintf NEW: ISO C 9x
1319 llrintl NEW: ISO C 9x
1320 llround NEW: ISO C 9x
1321 llroundf NEW: ISO C 9x
1322 llroundl NEW: ISO C 9x
1327 lrintf NEW: ISO C 9x
1328 lrintl NEW: ISO C 9x
1329 lround NEW: ISO C 9x
1330 lroundf NEW: ISO C 9x
1331 lroundl NEW: ISO C 9x
1333 makecontext NEW: Unix98
1334 mempcpy NEW: GNU ext.
1337 modify_ldt NEW: kernel
1341 nearbyint NEW: ISO C 9x
1342 nearbyintf NEW: ISO C 9x
1343 nearbyintl NEW: ISO C 9x
1344 netname2host NEW: Secure RPC
1345 netname2user NEW: Secure RPC
1346 nexttoward NEW: ISO C 9x
1347 nexttowardf NEW: ISO C 9x
1348 nexttowardl NEW: ISO C 9x
1352 passwd2des NEW: Secure RPC
1354 pow10f NEW: GNU ext.
1355 pow10l NEW: GNU ext.
1358 printf_size NEW: GNU ext.
1359 printf_size_info NEW: GNU ext.
1360 profil_counter REMOVED
1361 pthread_mutexattr_getkind_np REPLACED
1362 pthread_mutexattr_setkind_np REPLACED
1363 ptsname NEW: Unix98 PTY
1364 ptsname_r NEW: Unix98 PTY
1366 putchar_locked REMOVED
1367 putgrent NEW: GNU ext.
1369 putpmsg NEW: STREAMS
1370 pututxline NEW: Unix98
1374 readdir64_r NEW: LFS
1375 remquo NEW: ISO C 9x
1376 remquof NEW: ISO C 9x
1377 remquol NEW: ISO C 9x
1379 roundf NEW: ISO C 9x
1380 roundl NEW: ISO C 9x
1382 scalbln NEW: ISO C 9x
1383 scalblnf NEW: ISO C 9x
1384 scalblnl NEW: ISO C 9x
1386 sendfile NEW: kernel
1387 setcontext NEW: Unix98
1388 setrlimit64 NEW: LFS
1389 setutxent NEW: Unix98
1391 sigignore NEW: Unix98
1392 sigqueue NEW: POSIX.1b
1393 sigrelse NEW: Unix98
1394 sigset NEW: POSIX.1b
1395 sigtimedwait NEW: POSIX.1b
1396 sigwaitinfo NEW: POSIX.1b
1397 sincos NEW: GNU ext.
1398 sincosf NEW: GNU ext.
1399 sincosl NEW: GNU ext.
1403 strcasestr NEW: GNU ext.
1404 strtoimax NEW: ISO C 9x
1405 strtoumax NEW: ISO C 9x
1406 strverscmp NEW: GNU ext.
1407 svcauthdes_stats NEW: Secure RPC
1408 svcunix_create NEW: sunrpc etx
1409 svcunixfd_create NEW: sunrpc ext
1410 swapcontext NEW: Unix98
1411 tcgetsid NEW: Unix98 PTY
1412 tdestroy NEW: GNU ext.
1413 tgamma NEW: ISO C 9x
1414 tgammaf NEW: ISO C 9x
1415 tgammal NEW: ISO C 9x
1419 truncf NEW: ISO C 9x
1420 truncl NEW: ISO C 9x
1422 unlockpt NEW: Unix98 PTY
1423 updwtmpx NEW: Unix98
1424 user2netname NEW: Secure RPC
1425 utmpxname NEW: Unix98
1426 versionsort NEW: GNU ext.
1427 versionsort64 NEW: GNU ext.
1429 wcscasecmp NEW: GNU ext.
1430 wcsncasecmp NEW: GNU ext.
1431 wcsnlen NEW: GNU ext.
1432 wcstoimax NEW: ISO C 9x
1433 wcstoll NEW: ISO C 9x
1434 wcstoull NEW: ISO C 9x
1435 wcstoumax NEW: ISO C 9x
1437 wordexp NEW: POSIX.2
1438 wordfree NEW: POSIX.2
1439 write_profiling REMOVED
1440 xdecrypt NEW: Secure RPC
1441 xdr_authdes_cred NEW: Secure RPC
1442 xdr_authdes_verf NEW: Secure RPC
1443 xdr_cryptkeyarg NEW: Secure RPC
1444 xdr_cryptkeyarg2 NEW: Secure RPC
1445 xdr_cryptkeyres NEW: Secure RPC
1446 xdr_getcredres NEW: Secure RPC
1447 xdr_key_netstarg NEW: Secure RPC
1448 xdr_key_netstres NEW: Secure RPC
1449 xdr_keybuf NEW: Secure RPC
1450 xdr_keystatus NEW: Secure RPC
1451 xdr_netnamestr NEW: Secure RPC
1452 xdr_sizeof NEW: Secure RPC
1453 xdr_unixcred NEW: sunrpc ext
1454 xencrypt NEW: Secure RPC
1455 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1466 * inet_ntoa is thread-safe
1468 * updwtmp is moved from libutil to libc
1470 * rewrite of cbrt function
1472 * update of timezone data
1486 * add atoll function
1488 * fix complex problems in Berkeley DB code
1490 * fix math functions
1494 * fixed lots of header problems (especially Linux/GNU specific)
1496 * dynamic loader preserves all registers
1498 * Roland McGrath provided support for handling of auxiliary objects in
1499 the ELF dynamic loader.
1501 * support for parallel builds is improved
1505 * GNU extensions are no longer declared by default. To enable them you
1506 must define the macro `_GNU_SOURCE' in your program or compile with
1509 * The library has changed from using GNU ld symbol aliases to using weak
1510 symbols where available. The ELF object file format supports weak
1511 symbols; GNU ld also supports weak symbols in the a.out format. (There
1512 is also now support for other GNU ld extensions in ELF. Use the
1513 `--with-elf' option to configure to indicate you have ELF, and
1514 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1515 of many files which contained only symbol aliases, reducing the size of
1516 the source and the compiled library; many other files were renamed to
1517 less cryptic names previously occupied by the symbol alias files.
1518 There is a new header file <elf.h> for programs which operate on
1519 files in the ELF format.
1521 * Converted to Autoconf version 2, so `configure' has more options.
1522 Run `configure --help' to see the details.
1524 * The library can now be configured to build profiling, highly-optimized
1525 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1526 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1527 `configure' enable building these extra libraries. The shared library is
1528 built by default when using both ELF and GNU ld. When shared libraries
1529 are enabled, the new library `-ldl' is available for arbitrary run-time
1530 loading of shared objects; its interface is defined in <dlfcn.h>. The
1531 new header file <link.h> gives access to the internals of the run-time
1532 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1533 application of same name on other systems and it provides information
1534 about dynamically linked binaries.
1536 * The C library now provides the run-time support code for profiling
1537 executables compiled with `-pg'. Programs can control the profiling code
1538 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1539 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1540 the support for this file format was contributed by David Mosberger-Tang.
1542 * The math code has been replaced with a math library based on fdlibm from
1543 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1544 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1545 functions. The math functions now reside in a separate library, so
1546 programs using them will need to use `-lm' their linking commands.
1548 * John C. Bowman contributed optimized ix87 assembler inline functions.
1550 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1551 mechanism similar to that found in Solaris 2. This is now used for the
1552 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1553 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1554 file controls what services are used for each individual database. This
1555 works by loading shared libraries with names specified in `nsswitch.conf',
1556 so service modules can be changed or added at any time without even
1557 relinking any program. Currently there are the file, db, and NIS based
1558 NSS services available.
1560 * The new functions `strtoq' and `strtouq' parse integer values from
1561 strings, like `strtol' and `strtoul', but they return `long long int' and
1562 `unsigned long long int' values, respectively (64-bit quantities).
1564 * The new functions `strtof' and `strtold' parse floating-point values from
1565 strings, like `strtod', but they return `float' and `long double' values,
1566 respectively (on some machines `double' and `long double' are the same).
1568 * Ulrich Drepper has contributed new implementations of the floating-point
1569 printing and reading code used in the `printf' family of functions and
1570 `strtod', `strtof', and `strtold'. These new functions are perfectly
1571 accurate, and much faster than the old ones.
1573 * The implementation of the POSIX locale model was completely rewritten by
1574 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1575 to compile the POSIX locale definition.
1577 * The former dummy implementations of the strcoll and strxfrm function are
1578 now replaced by fully functional code contributed by Ulrich Drepper. The
1579 collation information comes from the POSIX locale definitions.
1581 * The new header <langinfo.h> defines an interface for accessing
1582 various locale-dependent data (using the locale chosen with `setlocale').
1584 * Ulrich Drepper has contributed a new suite of functions for operation on
1585 wide-character and multibyte-character strings, in <wchar.h>;
1586 and classification and case conversion of wide characters, in <wctype.h>.
1587 These new functions are conforming to the ISO C, Amendement 1 specification.
1589 * There is now a second implementation of the standard I/O library available.
1590 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1591 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1593 * You can now use positional parameter specifications in format strings
1594 for the `printf' and `scanf' families of functions. For example,
1595 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1596 ``Number 6, Mr Jones''. This is mainly useful when providing different
1597 format strings for different languages, whose grammars may dictate
1598 different orderings of the values being printed. To support this
1599 feature, the interface for `register_printf_handler' has changed; see
1600 the header file <printf.h> for details.
1602 * The `printf' and `scanf' families of functions now understand a new
1603 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1604 to group numbers as indicated by the locale; for `scanf' and friends, this
1605 says to accept as valid only a number with all the proper grouping
1606 separators in the right places. In the default "C" locale, numbers are
1607 not grouped; but locales for specific countries will define the usual
1608 conventions (i.e. separate thousands with `,' in the US locale).
1610 * The pgrp functions have been regularized, slightly incompatibly but much
1611 less confusingly. The core functions are now `getpgid' and `setpgid',
1612 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1613 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1614 provided for compatibility. There is no longer an incompatible `getpgrp'
1615 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1617 * The new header file <fts.h> and suite of functions simplify programs that
1618 operate on directory trees. This code comes from 4.4 BSD.
1620 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1621 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1622 NSS scheme used in glibc.
1624 * There is a new malloc debugging hook `__memalign_hook'.
1626 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1627 `unsigned int' in <sys/types.h>. These are for compatibility only and
1628 their use is discouraged.
1630 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1631 done differently, so that it works even without GNU ld.
1633 * New function `euidaccess' checks allowed access to a file like `access',
1634 but using the effective IDs instead of the real IDs.
1636 * The time zone data files have been updated for the latest and greatest
1637 local time conventions of the countries of the world.
1639 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1642 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1643 for formatting floating-point numbers. They are provided only for
1644 compatibility; new programs should use `sprintf' instead. There are
1645 also equivalent function for the `long double' floating-point type and
1646 all functions also exist in a reentrant form.
1648 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1649 functions for maintaining the login-record files (primarily of use to
1650 system programs such as `login'), and convenient functions for
1651 allocating and initializing a pseudo-terminal (pty) device.
1653 * Ulrich Drepper has contributed new support for System V style
1654 shared memory and IPC on systems that support it.
1656 * Ulrich Drepper has contributed several miscellaneous new functions found
1657 in System V: The `hsearch' family of functions provide an effective
1658 implementation of hash tables; `a64l' and `l64a' provide a very simple
1659 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1662 * Ulrich Drepper has contributed new reentrant counterparts for the
1663 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1665 * Ulrich Drepper has contributed new, highly-optimized versions of several
1666 string functions for the i486/Pentium family of processors.
1668 * Ulrich Drepper has updated the Linux-specific code, based largely
1669 on work done in Hongjiu Lu's version of GNU libc for Linux.
1670 The GNU library now supports Linux versions 2.0.10 and later,
1671 using the ELF object file format (i[3456]86-*-linux).
1673 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1675 * David Mosberger-Tang and Richard Henderson have ported the C library
1676 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1677 dynamic linking support for ELF/Alpha.
1679 * Richard Henderson contributed several Alpha optimized assembler function
1680 for arithmetic and string handling.
1682 * Ulrich Drepper has contributed a new set of message catalog functions to
1683 support multiple languages using the <libintl.h> interface, for use with
1684 his new package GNU gettext. Translation volunteers have contributed
1685 catalogs of the library's messages in Spanish, German, and Korean.
1687 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1688 program and the `catgets' function for reading the catalog files it
1689 creates. (The <libintl.h> interface is preferred; we include the
1690 <nl_types.h> interface using `catgets' only for source compatibility with
1691 programs already written to use it.)
1693 * New header file <values.h> gives SVID-compatible names for <limits.h>
1696 * Various new macros, declarations, and small header files for compatibility
1699 * New function `group_member' is a convenient way to check if a process has
1700 a given effective group ID.
1702 * When using GCC 2.7 and later, the socket functions are now declared in a
1703 special way so that passing an argument of type `struct sockaddr_in *',
1704 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1705 `struct sockaddr *' type, does not generate a type-clash warning.
1707 * New function `error' declared in header file <error.h> is a convenient
1708 function for printing error messages and optionally exiting; this is the
1709 canonical function used in GNU programs. The new functions `err', `warn',
1710 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1711 doing the same thing.
1713 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1714 POSIX.2 `glob' function to do ~ and {...} expansion.
1716 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1717 `clearenv' which is used in POSIX.9 is also available.
1719 * New function `getsid' returns session ID number on systems that support it.
1721 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1722 files <db.h> and <mpool.h> provide a rich set of functions for several
1723 types of simple databases stored in memory and in files, and <ndbm.h> is
1724 an old `ndbm'-compatible interface using the `db' functions. Link with
1725 `-ldb' to get these functions.
1727 * New macro `strdupa' copies a string like `strdup', but uses local stack
1728 space from `alloca' instead of dynamic heap space from `malloc'.
1730 * New function `strnlen' is like `strlen' but searches only a given maximum
1731 number of characters for the null terminator. `stpncpy', `strndup' and
1732 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1735 * New function `statfs' in header <sys/statfs.h>.
1737 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1738 provide convenient functions for operating on blocks of null-terminated
1741 * A new suite of functions in <utmp.h> handle all the details of reading
1742 and writing the utmp file.
1744 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1747 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1748 completely POSIX compliant and also implemented the extended functionality
1749 to handle alternate digit representation and alternate era date formats.
1751 * Ulrich Drepper provided an implementation of the `strptime' function
1752 defined in XPG4.2 which transforms a string into a `struct tm' value.
1754 * Paul Eggert provided the tzselect shell script as part of the timezone
1755 code. The shell script makes it easy to select the correct timezone
1758 * The implementation of the malloc family of functions is completely replaced
1759 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1760 The implementation uses the mmap function (if available) and it is
1761 optimized for the use in multi threaded programs.
1763 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1764 functions. This new functionality is usable by specifying a special
1765 salt string and it is compatible with implementation on *BSD systems.
1767 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1768 `getsubopt' to handle second level command line options, `bsd_signal'
1769 to access BSD style `signal' functionality, the obsolete `regexp' style
1772 * the `lchown' function is available on system which support this
1775 * The implementation of the shadow password handling function was contributed
1778 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1780 * POSIX.1g support was added. The <sys/select.h> header is available,
1781 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1782 implementation of `getaddrinfo'.
1786 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1788 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1789 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1791 * The new function `daemon' from 4.4 BSD is useful for server programs that
1792 want to put themselves in the background.
1794 * Joel Sherrill has contributed support for several standalone boards that
1795 run without an operating system.
1797 * `printf', `scanf' and friends now accept a `q' type modifier for long
1798 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1800 * All of the code taken from BSD (notably most of the math and networking
1801 routines) has been updated from the BSD 4.4-Lite release.
1803 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1805 * The new functions `getdomainname' and `setdomainname' fetch or change the
1806 YP/NIS domain name. These are system calls which exist on systems which
1809 * The time zone data files have been updated for the latest international
1812 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1813 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1817 * The C library now includes support for Sun RPC, from Sun's free
1818 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1819 are included. (There is still no support for YP.)
1821 * Tom Quinn has contributed a port of the C library to SGI machines running
1822 Irix 4 (mips-sgi-irix4).
1824 * The new `lockf' function is a simplified interface to the locking
1825 facilities of `fcntl', included for compatibility.
1827 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1829 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1831 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1834 * The error message printed by `assert' for a failed assertion now includes
1835 the name of the program (if using GNU ld) and the name of the calling
1836 function (with versions of GCC that support this).
1838 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1840 * The library now includes the <sys/mman.h> header file and memory
1841 management functions `mmap', `munmap', `mprotect', `msync', and
1842 `madvise', on systems that support those facilities.
1844 * The interface for `mcheck' has changed slightly: the function called to
1845 abort the program when an allocation inconsistency is detected now takes
1846 an argument that indicates the type of failure. The new function
1847 `mprobe' lets you request a consistency check for a particular block at
1848 any time (checks are normally done only when you call `free' or `realloc'
1851 * It is now possible to easily cross-compile the C library, building on one
1852 system a library to run on another machine and/or operating system. All
1853 you need to do is set the variable `HOST_CC' in `configparms' to the
1854 native compiler for programs to run on the machine you are building on (a
1855 few generator programs are used on Unix systems); set `CC' to the
1858 * The new function `fexecve' (only implemented on the GNU system) executes
1859 a program file given a file descriptor already open on the file.
1863 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1864 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1866 * You can set the variable `libprefix' in `configparms' to specify a prefix
1867 to be prepended to installed library files; this makes it easy to install
1868 the GNU C library to be linked as `-lgnuc' or whatever.
1870 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1871 copies a limited number of characters from a string, and returns the
1872 address of the last character written.
1874 * You no longer need to check for whether the installed `stddef.h' is
1875 compatible with the GNU C library. configure now checks for you.
1877 * You can now define a per-stream `fileno' function to convert the
1878 stream's cookie into an integral file descriptor.
1880 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1881 allocates zero bytes of storage, and returns a unique pointer which
1882 you can pass to `realloc' or `free'. The behavior is undefined if
1883 you dereference this pointer.
1885 * The C library now runs on Sony NEWS m68k machines running either
1886 NewsOS 3 or NewsOS 4.
1888 * The new `syscall' function is a system-dependent primitive function
1889 for invoking system calls. It has the canonical behavior on Unix
1890 systems, including unreliable return values for some calls (such as
1891 `pipe', `fork' and `getppid').
1893 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1894 to `EAGAIN', which is the preferred name. On systems whose kernels
1895 use two distinct codes, the C library now translates EWOULDBLOCK to
1896 EAGAIN in every system call function.
1900 * The GNU C Library Reference Manual is now distributed with the library.
1901 `make dvi' will produce a DVI file of the printed manual.
1902 `make info' will produce Info files that you can read on line using C-h i
1903 in Emacs or the `info' program.
1904 Please send comments on the manual to bug-glibc-manual@gnu.org.
1906 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1908 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1910 * Jason Merrill has contributed a port to the Sequent Symmetry running
1911 Dynix version 3 (i386-sequent-dynix).
1913 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1914 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1916 * New function `memory_warnings' lets you arrange to get warnings when
1917 malloc is running out of memory to allocate, like Emacs gives you.
1919 * The C library now contains the relocating allocator used in Emacs 19 for
1920 its editing buffers. This allocator (ralloc) minimizes allocation
1921 overhead and fragmentation by moving allocated regions around whenever it
1922 needs to. You always refer to a ralloc'd region with a "handle" (a
1923 pointer to a pointer--an object of type `void **').
1925 * There is a new `printf' format: `%m' gives you the string corresponding
1926 to the error code in `errno'.
1928 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1929 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1930 pass, the `a' modifier says to fill in a `char **' you pass with a
1933 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1934 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1935 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1937 * `mkstemp' is a traditional Unix function to atomically create and open a
1938 uniquely-named temporary file.
1942 * The standard location for the file that says what the local timezone is
1943 has changed again. It is now `/usr/local/etc/localtime' (or more
1944 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1946 * The distribution no longer contains any files with names longer than 14
1949 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1950 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1952 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1956 * The configuration process has changed quite a bit. The `configure'
1957 script is now used just like the configuration scripts for other GNU
1958 packages. The `sysdeps' directory hierarchy is much rearranged.
1959 The file `INSTALL' explains the new scheme in detail.
1961 * The header files no longer need to be processed into ANSI C and
1962 traditional C versions. There is just one set of files to install, and
1963 it will work with ANSI or old C compilers (including `gcc -traditional').
1965 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1966 MIPS DECStation running Ultrix 4.
1968 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1969 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1970 made itself into a shared library.
1972 * Yet further improved support for the i386, running 4.3 BSD-like systems
1973 (such as Mach 3 with the Unix single-server), or System V.
1975 * New function `strncasecmp' to do case-insensitive string comparison
1976 with limited length.
1978 * New function `strsep' is a reentrant alternative to `strtok'.
1980 * New functions `scandir' and `alphasort' for searching directories.
1982 * New function `setenv' is a better interface to `putenv'.
1984 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1985 function for traversing a directory tree.
1987 * The GNU obstack package is now also part of the C library.
1988 The new function `open_obstack_stream' creates a stdio stream that
1989 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1990 formatted output directly to an obstack.
1992 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1993 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1995 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1997 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1998 things to your strings.
2000 * There are some new test programs: test-fseek, testmb, and testrand.
2002 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2003 These ports are not finished, but are a good starting place for really
2004 supporting those systems.
2006 * `/etc/localtime' is now the standard location for the file that says what
2007 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2008 This follows the general principle that `/etc' is the place for all local
2009 configuration files.
2011 * The C library header files now use `extern "C"' when used by the C++
2012 compiler, so the C library should now work with C++ code.
2014 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2015 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2018 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2019 function which uses the `merge sort' algorithm, and is said to be
2020 significantly faster than the old GNU `qsort' function. Merge sort is
2021 now the standard `qsort' function. The new algorithm can require a lot
2022 of temporary storage; so, the old sorting function is called when the
2023 required storage is not available.
2025 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2026 provides the Unix `crypt' function, plus some other entry points.
2028 * The code and header files taken from 4.4 BSD have been updated with the
2029 latest files released from Berkeley.
2031 ----------------------------------------------------------------------
2032 Copyright information:
2034 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2036 Permission is granted to anyone to make or distribute verbatim copies
2037 of this document as received, in any medium, provided that the
2038 copyright notice and this permission notice are preserved,
2039 thus giving the recipient permission to redistribute in turn.
2041 Permission is granted to distribute modified versions
2042 of this document, or of portions of it,
2043 under the above conditions, provided also that they
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2047 version-control: never
projects / platform / upstream / glibc.git / blob