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, 887, 2074, 2541, 2547, 2548, 2550, 2551, 2552,
13 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678, 3335, 3440,
14 3768, 3866, 3868, 3976, 3992, 4026, 4108, 4596, 4822, 5077, 5461, 5805,
15 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794, 6884, 6890, 6894, 6895,
16 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135, 10140, 10153, 10210,
17 10254, 10346, 10545, 10716, 11174, 11322, 11365, 11451, 11494, 11521,
18 11959, 12047, 12340, 13058, 13525, 13526, 13527, 13528, 13529, 13530,
19 13531, 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13559, 13563,
20 13566, 13583, 13592, 13618, 13637, 13656, 13658, 13673, 13691, 13695,
21 13704, 13705, 13706, 13726, 13738, 13739, 13758, 13760, 13761, 13775,
22 13786, 13787, 13792, 13806, 13824, 13840, 13841, 13844, 13846, 13851,
23 13852, 13854, 13871, 13872, 13873, 13879, 13883, 13884, 13885, 13886,
24 13892, 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916,
25 13917, 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927,
26 13928, 13938, 13941, 13942, 13963, 13967, 13970, 13973, 13979, 13983,
27 14027, 14033, 14034, 14040, 14049, 14053, 14055, 14064, 14080, 14083
31 + define static_assert
35 + declare at_quick_exit and quick_exit also for ISO C11
37 + aligned_alloc. NB: The code is deliberately allows the size parameter
38 to not be a multiple of the alignment. This is a moronic requirement
39 in the standard but it is only a requirement on the caller, not the
44 + uchar.h support added
46 + CMPLX, CMPLXF, CMPLXL added
48 Implemented by Ulrich Drepper.
50 * Support for the IA-64 is removed and could live in ports.
52 * Remove support for anything but ELF binary format
54 * Checking versions of poll, ppoll added.
55 Implemented by Ulrich Drepper.
57 * More generic and 64-bit performance optimizations to math functions.
58 Implemented by Ulrich Drepper.
60 * New configure option --enable-obsolete-rpc makes the deprecated RPC
61 headers and functions available at compile time as they were before
62 version 2.14. This option will be removed at some time in the future
63 after the TI-RPC library becomes fully sufficient for the needs of
64 existing applications.
68 * The following bugs are resolved with this release:
70 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
71 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
72 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
73 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
74 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
75 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
76 13484, 13506, 13515, 13523, 13524, 13538, 13540
78 * New program pldd to list loaded object of a process
79 Implemented by Ulrich Drepper.
81 * Add nss_db support back to glibc. No more dependency on Berkeley db
82 and support for initgroups lookups.
83 Implemented by Ulrich Drepper.
85 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
88 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
91 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
93 Contributed by Liubov Dmitrieva.
95 * Optimized strchr and strrchr for SSE on x86-32.
96 Contributed by Liubov Dmitrieva.
98 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
99 for x86-64 and x86-32.
100 Contributed by Liubov Dmitrieva.
102 * New interfaces: scandirat, scandirat64
103 Implemented by Ulrich Drepper.
105 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
106 Implemented by Ulrich Drepper.
108 * nscd now also caches the netgroup database.
109 Implemented by Ulrich Drepper.
111 * Integrate libm with gcc's -ffinite-math-only option.
112 Implemented by Ulrich Drepper.
114 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
115 to math functions. Implemented by Ulrich Drepper.
117 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
118 Implemented by Ulrich Drepper.
120 * New Linux interfaces: process_vm_readv, process_vm_writev
122 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
123 Implemented by Ulrich Drepper.
125 * Optimized nearbyint and strcasecmp for PPC.
126 Implemented by Adhemerval Zanella.
128 * New locales: bho_IN, unm_US, es_CU, ta_LK
132 * The following bugs are resolved with this release:
134 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
135 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
136 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
137 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
138 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
139 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
140 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
141 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
142 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
143 12795, 12811, 12813, 12814, 12841
145 * The RPC implementation in libc is obsoleted. Old programs keep working
146 but new programs cannot be linked with the routines in libc anymore.
147 Programs in need of RPC functionality must be linked against TI-RPC.
148 The TI-RPC implementation is IPv6 enabled and there are other benefits.
150 Visible changes of this change include (obviously) the inability to link
151 programs using RPC functions without referencing the TI-RPC library and the
152 removal of the RPC headers from the glibc headers.
153 Implemented by Ulrich Drepper.
155 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
156 syncfs, setns, sendmmsg
158 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
159 yue_HK, lij_IT, mhr_RU
161 * New encodings: CP770, CP771, CP772, CP773, CP774
163 * New program sotruss to trace calls through PLTs
164 Implemented by Ulrich Drepper.
166 * The malloc hook implementation is marked deprecated and will be removed
167 from the default implementation in the next version. The design never
168 worked ever since the introduction of threads. Even programs which do
169 not create threads themselves can use multiple threads created internally.
173 * The following bugs are resolved with this release:
175 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
176 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
177 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
178 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
181 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
183 * POWER7 optimizations: memset, memcmp, strncmp
185 * New optimized string functions for x86-64: strnlen (SSE2),
186 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
187 Implemented by Ulrich Drepper.
191 * The following bugs are resolved with this release:
193 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
194 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
195 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
196 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
197 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
198 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
199 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
200 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
202 * New interfaces: pthread_getname_np, pthread_setname_np
204 * New Linux interface: recvmmsg
206 * STT_GNU_IFUNC implemented for Sparc by David Miller.
208 * The dynamic linker now recognizes supported ABI versions from the
209 EI_ABIVERSION field in the ELF header.
210 Implemented by Ulrich Drepper.
212 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
213 will not be used to fill in password fields in the passwd.byname replies.
214 Instead it is used to synthesize the shadow.byname table, should it be
215 missing. This is a useful mode in some installations involving Solaris.
216 Implemented by Ulrich Drepper.
218 * New locales: kok_IN, sq_MK, cv_RU
222 * The following bugs are resolved with this release:
224 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
225 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
226 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
227 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
228 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
229 10789, 10817, 10823, 10840, 10847
231 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
233 Implemented by Ulrich Drepper.
235 * Checking version of longjmp added that fails if an uninitialized stack
236 frame would be created. Implemented by Ulrich Drepper.
238 * STT_GNU_IFUNC is now supported in static executables.
239 Implemented by H.J. Lu.
241 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
243 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
244 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
245 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
246 Contributed by H.J. Lu.
248 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
249 Implemented by Ulrich Drepper.
251 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
253 Contributed by H.J. Lu.
255 * Support for fma instruction in AVX on x86-64.
256 Implemented by H.J. Lu and Ulrich Drepper.
258 * AVX support in x86-64 auditing support in ld.so.
259 Implemented by H.J. Lu.
261 * STB_GNU_UNIQUE support added.
262 Implemented by Ulrich Drepper.
264 * Implement second fallback mode for optimized DNS lookup for even more
265 broken environments. If two requests from the same port are not
266 handled correctly close the socket and open a new one before sending
267 the second request. The 'single-request-reopen' option in /etc/resolv.conf
268 can be used to select this mode right away, instead of rediscovering the
269 necessity is every process again.
270 Implemented by Ulrich Drepper.
272 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
273 Implemented by Adam Tkac.
275 * Optimized iconv conversions for S390x.
276 Implemented by Andreas Krebbel.
278 * Using condvars with PI mutexes is now more efficient due to kernel
279 support for requeueing to PI futexes. NPTL support added for x86-64.
280 Implemented by Ulrich Drepper.
282 * New locales: ps_AF, my_MM
286 * The following bugs are resolved with this release:
288 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
289 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
290 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
291 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
292 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
294 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
295 Implemented by Ulrich Drepper.
297 * New Linux interfaces: accept4, fallocate, fallocate64.
298 Implemented by Ulrich Drepper.
300 * Correct declarations of string function when used in C++ code. This
301 could lead to compile errors for invalid C++ code.
303 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
306 * New POSIX 2008 interface: psiginfo
307 Implemented by Ulrich Drepper.
309 * New ISO C++1x interfaces: quick_exit, at_quick_exit
310 Implemented by Ulrich Drepper.
312 * Support for selecting between multiple function definitions at runtime
313 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
315 * The libcrypt library can now use the hash function implementations in
316 NSS. Implemented by Ulrich Drepper.
318 * The malloc implementation can be compiled to be less memory efficient
319 but higher performing in multi-threaded programs.
320 Implemented by Ulrich Drepper.
322 * New locales: nan_TW@latin, ks_IN
324 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
325 Implemented by Ulrich Drepper.
327 * Extended printf hook support. It is possible to use user-defined types
328 and extend existing format specifiers.
329 Implemented by Ulrich Drepper.
331 * Handling for group shadow files has been added.
332 Implemented by Ulrich Drepper.
334 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
335 servers (the case, e.g., for some people using the built-in DNS
336 server in ADSL modems/routers). There is a once-per-process timeout
337 in case of a broken server. To avoid it, users can run nscd or put
338 'options single-request' in /etc/resolv.conf.
339 Implemented by Ulrich Drepper.
343 * The following bugs are resolved with this release:
345 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
346 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
347 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
348 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
349 6968, 6974, 6980, 6995, 7008, 7009, 7029
351 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
352 up at the same time. Implemented by Ulrich Drepper.
354 * TLS descriptors for LD and GD on x86 and x86-64.
355 Implemented by Alexandre Oliva.
357 * getaddrinfo now handles DCCP and UDPlite.
358 Implemented by Ulrich Drepper.
360 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
361 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
362 Implemented by Ulrich Drepper.
364 * New implementation of memmem, strstr, and strcasestr which is O(n).
365 Implemented by Eric Blake.
367 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
369 * Implement "e" option for popen to open file descriptor with the
370 close-on-exec flag set. Implemented by Ulrich Drepper.
372 * Implement "b" mode for fmemopen. In this mode writes writes don't
373 implicitly add a NUL byte and seeks from the end of the buffer really
374 use the buffer end, not the string length as the basis.
375 Implemented by Ulrich Drepper.
377 * Many functions, exported and internal, now atomically set the close-on-exec
378 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
380 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
382 Implemented by Pravin Satpute.
384 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
388 * The following bugs are resolved with this release:
390 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
391 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
392 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
393 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
394 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
395 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
396 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
398 * New locales: bo_CN, bo_IN, shs_CA.
400 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
402 * Sorting rules for some Indian languages (Devanagari and Gujarati).
403 Implemented by Pravin Satpute.
405 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
407 * nscd caches now all timeouts for DNS entries
408 Implemented by Ulrich Drepper.
410 * nscd is more efficient and wakes up less often.
411 Implemented by Ulrich Drepper.
413 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
414 vdprintf, and obstack_vprintf.
415 Implemented by Jakub Jelinek.
417 * Faster memset for x86-64.
418 Implemented by Harsha Jagasia and H.J. Lu.
420 * Faster memcpy on x86.
421 Implemented by Ulrich Drepper.
423 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
424 Implemented by Ulrich Drepper.
426 * Faster sqrt and sqrtf implemention for some PPC variants.
427 Implemented by Stephen Munroe.
431 * The following bugs are resolved with this release:
433 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
434 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
435 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
436 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
437 5071, 5103, 5104, 5112, 5113, 5184, 5186
439 * More checking functions: fread, fread_unlocked, open*, mq_open.
440 Implemented by Jakub Jelinek and Ulrich Drepper.
442 * Extend fortification to C++. Implemented by Jakub Jelinek.
444 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
445 by not recognizing 'a' as a modifier when those specs are requested.
446 Implemented by Jakub Jelinek.
448 * PPC optimizations to math and string functions.
449 Implemented by Steven Munroe.
451 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
452 options to be passed. Implemented by Ulrich Drepper.
454 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
456 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
457 Implemented by Ulrich Drepper.
459 * Handle private futexes in the NPTL implementation.
460 Implemented by Jakub Jelinek and Ulrich Drepper.
462 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
463 Implemented by Roland McGrath and Ulrich Drepper.
465 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
467 * SHA-256 and SHA-512 based password encryption.
468 Implemented by Ulrich Drepper.
470 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
471 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
474 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
475 Implemented by Ulrich Drepper.
479 * The following bugs are resolved with this release:
481 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
482 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
483 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
484 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
485 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
486 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
487 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
490 * New Linux interfaces: epoll_pwait, sched_getcpu.
492 * New generic interfaces: strerror_l.
494 * nscd can now cache the services database. Implemented by Ulrich Drepper.
498 * The following bugs are resolved with this release:
500 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
501 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
502 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
503 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
504 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
505 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
506 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
507 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
508 3225, 3251, 3252, 3253, 3273
510 * For Linux, the sorting of addresses returned by getaddrinfo now also
511 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
512 Implemented by Ulrich Drepper.
514 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
515 Implemented by Ulrich Drepper.
517 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
519 * New iconv module for MIK. Contributed by Alexander Shopov.
521 * For sites with broken group and/or passwd database, the auto-propagate
522 option of nscd can prevent creating ID lookup entries from the results
523 of a name lookup and vice versa. This usually is no problem but some
524 site might have problems with the default behavior.
525 Implemented by Ulrich Drepper.
527 * Iterating over entire database in NIS can be slow. With the
528 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
529 to trade time for memory. The entire database will be read at once.
530 Implemented by Ulrich Drepper.
532 * The interfaces introduced in RFC 3542 have been implemented by
535 * Support for the new ELF hash table format was added by Ulrich Drepper.
537 * Support for priority inheritance mutexes added by Jakub Jelinek and
540 * Support for priority protected mutexes added by Jakub Jelinek.
542 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
543 or_IN, csb_PL, fy_NL, sr_ME.
547 * More overflow detection functions.
549 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
550 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
552 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
553 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
554 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
555 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
556 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
557 by Masahide Washizawa.
559 * It is now possible to install audit libraries for the dynamic linker using
560 LD_AUDIT. Implemented by Ulrich Drepper.
562 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
563 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
564 For a libc and libpthread that works well on Linux 2.4 kernels, we
565 recommend using the stable 2.3 branch.
567 * The new function open_wmemstream acts like open_memstream,
568 but uses a wchar_t wide character buffer.
570 * The new function ppoll is an improved version of poll, similar to pselect.
572 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
573 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
574 renameat, unlinkat, linkat, symlinkat, readlinkat.
576 * New Linux kernel system calls: unshare,
577 inotify_init, inotify_add_watch, inotify_rm_watch.
579 * The euidaccess function is now also known by the alias eaccess,
580 for compatibility with some other systems.
582 * Timezone data updated to 2006b version.
586 * The following bugs are resolved with this release:
588 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
589 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
590 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
591 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
592 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
593 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
595 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
597 * As of this release, GCC 4 can be used to compile the C Library.
599 * Timezone data updated to 2005m version.
603 * The following bugs are resolved with this release:
605 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
606 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
607 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
608 777, 787, 821, 822, 823, 825
610 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
614 * Support for RFC 3678. Real implementations exist only for Linux so far.
615 Implemented by Ulrich Drepper.
617 * nscd can now cache entries persistently. Expiring entries are reloaded.
618 For speedups the cache can be shared in memory with client processes.
619 Implemented by Ulrich Drepper.
621 * nscd can now perform SELinux checks.
622 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
624 * getaddrinfo queries are now cached. Canonical name lookup is performed
626 Implemented by Ulrich Drepper.
628 * The nothrow function attribute is used when headers are used by gcc when
629 compiling C code. This can avoid significant amounts of exception
632 * The malloc functions perform more error checking and are stricter when
633 it comes to reacting on errors. The default action is to terminate
634 the process after showing an error message. Implemented by Ulrich Drepper.
636 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
637 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
639 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
640 namespaces using the new function dlmopen(). This feature is of course,
641 like most other dynamic loading functionality, not available in statically
642 linked applications. Implemented by Ulrich Drepper.
644 * Low-overhead boundary checking variants of string and some stdio functions
645 were added. These are to be used in conjunction with a gcc patch by
646 Jakub Jelinek which adds calls to these functions if possible.
647 Implemented by Jakub Jelinek and Ulrich Drepper.
649 * Old code for several operating systems and machine architectures that
650 have not been in working condition in a long time have been removed from
651 the main source tree maintained by the GNU C Library's maintainers.
652 These files are now reside in the separate `ports' source module
653 that is usable as an add-on when building the library.
657 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
658 interrogate the dynamic linker, compatible with the Solaris interface.
660 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
661 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
663 * getifaddrs now uses the netlink interface on Linux to get its information.
664 Implemented by Thorsten Kukuk.
666 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
667 Implemented by Ulrich Drepper.
669 * support for non-executable stacks on x86 has been added. Changes mostly
672 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
675 * getaddrinfo now performs destination address selection according to
680 * Thread-safe interfaces for many functions that access locale data
681 were added in version 2.3, but these features were omitted from NEWS.
682 Many functions have variants with an `_l' suffix that take a `locale_t'
683 object as a parameter rather than consulting the current locale.
684 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
685 create and maintain `locale_t' objects. Additionally, the new function
686 `uselocale' sets "the current locale" (as used by functions not so
687 parameterized) set for an individual thread. These features were added
688 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
690 * The functions getresuid, getresgid, setresuid, and setresgid, which
691 have long been available on Linux, are now declared in <unistd.h>
692 and are now also available on the Hurd.
694 * ELF thread-local storage support (TLS) now works on x86-64.
696 * The new dynamic string token $LIB is expanded in shared library names.
697 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
699 * Aldy Hernandez contributed complete software floating point support for
700 PowerPC machines with no FPU.
702 * fexecve is implemented on Linux.
704 * The `btowc' function should work at least twice as fast due to
705 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
707 * With approriate thread add-ons cancelable functions are now implemented
708 in libc.so as well. No need to call the function in libpthread. This
709 change allowed to finally disable the incorrect and expensive handling
710 of weak definition in ld.so.
712 * Yet more PLT entries in libc.so have been removed. We finally arrived
713 at the bare minimum. Startup times improved appropriately.
715 * Support for the new Linux/x86 system call interface was added. The
716 AT_SYSINFO auxiliary vector entry is recognized and handled.
720 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
723 * iconv (the program and the interface) now accepts empty names (excluding
724 options like //TRANSLIT) to mean "use charset of current locale".
726 * localedef can now transliterate characters in strings which are not in
727 the provided charmap. The information from the input locale is used.
729 * Prelinking support was added for ELF targets. This requires additional
730 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
732 * Read-only stdio streams now use mmap to speed up operation by eliminating
733 copying and buffer underflows. To use add 'm' to the mode string of
734 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
736 * The malloc functions were completely rewritten by Wolfram Gloger based
737 on Doug Lea's malloc-2.7.0.c.
739 * Isamu Hasegawa contributed a completely new and POSIX-conformant
740 implementation of regex.
742 * Bruno Haible upgraded the iconv and locale implementation to support
745 * Contents of the LC_* and LANG environment variables in the CEN style are
746 not recognized anymore. It never was used. Change by Ulrich Drepper.
748 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
749 thread-local storage (TLS) ABI on some platforms.
750 Changes by Ulrich Drepper. SH support by Kaz Kojima.
752 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
753 EUC-JISX0213, and TSCII.
755 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
756 BSD-compatible interface for getting all network interface addresses.
757 Implementation for IPv4 by Roland McGrath.
759 * Loading of locale data is faster due to the introduction of a locale
760 archive. Implemented by Roland McGrath and Ulrich Drepper.
762 * Startup times are significantly reduced by not using exported functions
763 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
766 * Steven Munroe contributed a port to PowerPC64/Linux.
770 * The Hurd now uses the GNU libio implementation of stdio rather than the
771 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
773 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
774 with the same behavior as the Linux system call of the same name.
778 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
779 128-bit long double format.
781 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
782 IBM1161, and IBM1162 charsets.
784 * Andreas Jaeger contributed a port to x86-64/Linux.
786 * Peter Bruin contributed a port to PowerPC/Hurd.
788 * libc functions using I/O streams now can handle wide-oriented streams
791 * optimizations in the dynamic linker. Binaries created by recent binutils
792 versions start up quicker due to reduced time spent on relocations.
794 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
798 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
799 asinh, atanh, j0 for the 128-bit long double format.
801 * Bruno Haible updated all the code handling Unicode in some form to
804 * Speed of regex for single-byte locales is back to previous levels.
805 Patch by Isamu Hasegawa.
807 * Alpha, SPARC, and IA-64 now also using floating stacks.
809 * Startup time of internationalized applications greatly improved through
810 iconv cache. Use iconvconfig to generate the cache file.
811 Contributed by Ulrich Drepper.
813 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
814 severe performance problems. Patch by David Mosberger.
816 * The Hurd port got a lot more functionality like AIO, various stdio
817 extensions, etc. Mainly done by Roland McGrath.
819 * mtrace can now lookup symbols in shared libraries.
823 * Intel's IA-64 math library is largely integrated. It provides fast and
824 accurate implementatations for most basic and standard math functions
825 in float, double, and long double format.
827 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
828 and asin for the 96-bit long double format and asin, log, tan for the
829 128-bit long double format.
831 * The beginning of a last-bit accurate math library by IBM Haifa were added.
832 The basic double functions exist today. Contributed by Abraham Ziv
833 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
834 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
836 * An asynchronous name lookup library was added. The interface is designed
837 after POSIX AIO. The proposal was circulated beforehand to get comments.
838 No negative ones came in. Implemented by Ulrich Drepper.
840 * Port to S390/64bit contributed by Martin Schwidefsky
841 <schwidefsky@de.ibm.com>.
843 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
844 of functions for Linux/IA-64.
846 * The RPC code is now thread safe. Threads can now use the same service
847 of different services at the same time. Patch by Eric Norum
848 <eric.norum@usask.ca> with some help by Ulrich Drepper.
850 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
851 family of functions for Linux/S390.
853 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
854 of functions for Linux/x86.
856 * Port to Linux/CRIS contributed by Axis Communications.
860 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
861 we can now check for namespace violations and missing declarations. The
862 result is that almost all headers are now Unix-compliant (as defined in
863 the upcoming XPG6). The negative side is that some programs might need
864 corrections, too, if they depend on the incorrect form of the headers in
865 previous versions which defined too many symbols and included too many
868 * regex now handles multibyte character sets correctly.
869 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
871 * iconv (the program) does now conform to the upcoming XPG6 and handles
872 charmaps. Instead of the charset names the path of charmaps can be
873 provided and the conversion happens based on this data.
874 Contributed by Ulrich Drepper.
876 * The locale program now provides detailed information about the installed
881 only lists the names of the supported locales
885 provides details such as country, language, and codeset name.
886 Contributed by Ulrich Drepper.
890 * The gencat program now parses the input file according to the charset
891 selected by the LC_CTYPE category. This is important for stateful
892 character sets. To make generating catalogs easier there is a way
893 to overwrite the charset selected by the locale: before the first
894 message or $ quote line the catalog can contain a line like
898 to select the charset (ISO-8859-2 in this case).
900 Implemented by Shinya Hanataka and Ulrich Drepper.
902 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
903 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
904 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
906 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
907 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
909 * The LANGUAGE environment variable is now ignored unless the locale is
910 changed from the default "C" locale.
912 * The usual bug fixes.
916 * Greg McGary added runtime support for bounds checking using gcc's
917 new -fbounded-pointers option. ix86 target is complete. PowerPC
920 * Thorsten Kukuk added secure mode support to nscd.
922 * The Berkeley db libraries have been removed.
924 Related, the nss_db module is now in a separate package since it
925 obviously requires a database library being available.
927 * Wide character I/O streams implemented by Ulrich Drepper.
929 * Functions from the extended socket API added by Ulrich Drepper.
931 * Functions feenableexcept and fedisableexcept to control the
932 behaviour of individual exceptions have been added by Andreas Jaeger.
934 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
936 * The resolver code has been updated from bind 8.2.3-T5B which supports
937 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
940 This change could in some situations effect backward compatibility. Since
941 now `_res' is a thread-local instead of a global variable, modifying it
942 in one thread does not have any effect in other threads.
944 The resolver library was also extended to allow IPv6 as the transport
945 protocol for the requests. This work was done by Stig Venaas.
947 * Compatibility code for K&R C compilers has been removed from the
948 header files. A ISO C compiler is needed to use the library
949 (conforming to either C89 or C99 standard).
951 * Complete rewrite of the localedef program to support multibyte character
952 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
953 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
954 Implemented by Ulrich Drepper.
956 Bruno Haible significantly improved the generation and use of the data
957 structures for the wide character tables.
959 * Plural handling in gettext implemented by Ulrich Drepper.
961 * The utmp daemon has been removed.
963 * The port to MIPS-Linux has been finished by Andreas Jaeger.
965 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
968 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
970 * POSIX barriers implemented by Kaz Kylheku.
972 * POSIX spawn function family implemented by Ulrich Drepper.
974 * POSIX spinlocks are now available.
976 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
978 * the configure option --enable-kernel=X.Y.Z allows to strip out
979 compatibility for kernel versions before X.Y.Z. This is currently only
980 implemented for Linux.
982 * the sockaddr_in6 structure changed. The IPv6 working group added a new
983 field sin6_scope_id. This means that all programs using IPv6 should be
984 recompiled. Don't expect binary compatibility with previous glibc
987 * various conversion modules for IBM character sets contributed by
990 * IA-64 port by Jes Sorensen and HJ Lu.
992 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
993 Compiling the GNU C Library for Linux/ia64
994 ******************************************
996 Please refer to the file INSTALL in the same directory as you found
997 this file for general information about configuring and compiling
1000 For general inquiries about glibc under Linux/ia64 please use the
1001 following mailing list linux-ia64@linuxia64.org or one of the relevant
1002 glibc mailing lists.
1004 Recommended Tools for Compilation
1005 =================================
1007 In order for glibc-2.2 to build correctly on the ia64 you need at
1008 least the following versions of the GNU tools (the :
1010 * The Cygnus toolchain snapshot for the ia64 as of August 4
1011 including the provided set of patches. It is however recommend
1012 you use the October 24 toolchain snapshot or a more recent version.
1014 OR alternatively you can try the following (the Cygnus toolchain is
1015 the recommended solution):
1017 * GCC and binutils, GAS and GNU LD out of CVS from
1018 sources.redhat.com as of August 28, 2000 or later. The CVS tree
1019 may require special patches to work properly on the ia64.
1021 Configuring and compiling GNU Libc for Linux/ia64
1022 =================================================
1024 The library requires Linux kernel version 2.4.0-test4-000728 or
1025 later to funtion properly. Besides that it support for debug libraries
1026 is currently untested. Hence the following options
1027 are required for configuring the library:
1029 --disable-debug --enable-kernel=2.4.0
1031 It is also important that you make sure the library picks up the
1032 appropriate kernel header files, if you do not have recent enough
1033 kernel headers in /usr/src/linux/include, you should use the
1034 --with-headers=<path> option to specify the location.
1036 As an example I personally use the following options to configure
1041 --enable-kernel=2.4.0
1043 --enable-add-ons=yes
1045 --with-headers=/home/jes/linux/include
1050 Jes Sorensen <jes@linuxcare.com>,
1052 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1066 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1068 * New xdr functions are added; some rpc functions are now 64bit clean.
1070 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1072 * Fixed known incompatibilities with glibc 2.0.
1074 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1076 * Optimized a number of functions (especially the ELF dynamic loader).
1078 * Update timezone data files.
1080 * lots of charmaps corrections
1082 * some new locale definitions and charmaps
1087 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1088 conform to POSIX member type requirements. Symbol versions have been
1089 adjusted as needed within the library, and for direct use by applications,
1090 but there is potential for problems if third-party libraries use
1091 struct timeval as part of their interface. This does not present
1092 a problem for X and other "essential" system libraries.
1094 * An additional locale model to support C++ Standard Library locale
1095 model and probably more was implemented by Ulrich Drepper.
1097 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1100 * Miles Bader provided the `argp' function family to support hierachical
1101 command line argument parsing, layered on top of getopt.
1103 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1105 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1108 * scanf recognizes the %a and %A format for scanning floating point numbers.
1110 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1111 information and interfaces for the available integer types.
1113 * about 130 new math functions were added to implement the ISO C9x math
1116 * the new header <complex.h> contains definitions of the complex math
1117 functions from ISO C 9X.
1119 * the new header <tgmath.h> defines generic macros to use complex or
1120 real valued functions.
1122 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1124 * Andreas Jaeger provided a test suite for the math library.
1126 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1128 * Ulrich Drepper added character set conversion functions (iconv).
1130 * Optimized string functions have been added.
1132 * The localedata addon is now part of glibc.
1134 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1136 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1137 daemon for NSS (nscd).
1139 Missing a better place here are some numbers on improvements. Under
1140 Linux 2.1.125 un-tar-ing the kernel sources takes
1144 using local files 12.19s 6.88s 22.91s
1146 using NIS 13.92s 8.91s 26.34s
1148 using NIS & nscd 10.37s 7.34s 25.30s
1150 using NIS+ 27.57s 30.37s 640.46s
1152 using NIS+ & nscd 10.25s 7.83s 26.51s
1154 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1156 Keep in mind that non-namelookup related operations dominate above times.
1157 It was just a common complain that using NIS+ unpacking the kernel is
1160 [1] The old nscd implementation is not available anymore since it was
1161 distributed with glibc up to version 2.0.98 and thus is now replaced.
1163 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1165 * Mark Kettenis provided a Hesiod NSS module.
1167 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1168 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1170 * rcmd can now handle netgroups (Dick Streefland).
1172 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1175 * Support for the IPv6 protocol has been added to the socket API, as per the
1176 latest draft standards.
1178 * Support for Linux 2.2 has been added.
1180 * Interface changes relative to the latest 2.0.x release:
1181 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1182 addseverity NEW: Unix98
1183 alphasort64 NEW: LFS
1184 argp_err_exit_status NEW: argp, GNU ext
1185 argp_error NEW: argp, GNU ext
1186 argp_failure NEW: argp, GNU ext
1187 argp_help NEW: argp, GNU ext
1188 argp_parse NEW: argp, GNU ext
1189 argp_program_bug_address NEW: argp, GNU ext
1190 argp_program_version NEW: argp, GNU ext
1191 argp_program_version_hook NEW: argp, GNU ext
1192 argp_state_help NEW: argp, GNU ext
1193 argp_usage NEW: argp, GNU ext
1194 authdes_create NEW: Secure RPC
1195 authdes_getucred NEW: Secure RPC
1196 authdes_pk_create NEW: Secure RPC
1197 backtrace NEW: GNU ext.
1198 backtrace_symbols NEW: GNU ext.
1199 backtrace_symbols_fd NEW: GNU ext.
1201 cacosf NEW: ISO C 9x
1202 cacosh NEW: ISO C 9x
1203 cacoshf NEW: ISO C 9x
1204 cacoshl NEW: ISO C 9x
1205 cacosl NEW: ISO C 9x
1212 casinf NEW: ISO C 9x
1213 casinh NEW: ISO C 9x
1214 casinhf NEW: ISO C 9x
1215 casinhl NEW: ISO C 9x
1216 casinl NEW: ISO C 9x
1218 catanf NEW: ISO C 9x
1219 catanh NEW: ISO C 9x
1220 catanhf NEW: ISO C 9x
1221 catanhl NEW: ISO C 9x
1222 catanl NEW: ISO C 9x
1223 cbc_crypt NEW: Secure RPC
1227 ccoshf NEW: ISO C 9x
1228 ccoshl NEW: ISO C 9x
1234 cimagf NEW: ISO C 9x
1235 cimagl NEW: ISO C 9x
1236 clearerr_locked REMOVED
1237 clntunix_create NEW: sunrpc ext
1239 clog10 NEW: ISO C 9x
1240 clog10f NEW: ISO C 9x
1241 clog10l NEW: ISO C 9x
1251 cprojf NEW: ISO C 9x
1252 cprojl NEW: ISO C 9x
1254 crealf NEW: ISO C 9x
1255 creall NEW: ISO C 9x
1260 csinhf NEW: ISO C 9x
1261 csinhl NEW: ISO C 9x
1264 csqrtf NEW: ISO C 9x
1265 csqrtl NEW: ISO C 9x
1269 ctanhf NEW: ISO C 9x
1270 ctanhl NEW: ISO C 9x
1272 des_setparity NEW: Secure RPC
1273 ecb_crypt NEW: Secure RPC
1274 endutxent NEW: Unix98
1276 exp10f NEW: ISO C 9x
1277 exp10l NEW: ISO C 9x
1281 fattach NEW: STREAMS
1282 fdetach NEW: STREAMS
1286 feclearexcept NEW: ISO C 9x
1287 fegetenv NEW: ISO C 9x
1288 fegetexceptflag NEW: ISO C 9x
1289 fegetround NEW: ISO C 9x
1290 feholdexcept NEW: ISO C 9x
1292 feraiseexcept NEW: ISO C 9x
1293 ferror_locked REMOVED
1294 fesetenv NEW: ISO C 9x
1295 fesetexceptflag NEW: ISO C 9x
1296 fesetround NEW: ISO C 9x
1297 fetestexcept NEW: ISO C 9x
1298 feupdateenv NEW: ISO C 9x
1299 fflush_locked REMOVED
1303 fgets_unlocked NEW: GNU ext.
1304 fileno_locked REMOVED
1316 fputc_locked REMOVED
1317 fputs_unlocked NEW: GNU ext.
1318 fread_unlocked NEW: GNU ext.
1323 fstatvfs NEW: Unix98
1327 ftruncate64 NEW: LFS
1329 fwrite_unlocked NEW: GNU ext.
1330 gai_strerror NEW: IPv6
1334 getchar_locked REMOVED
1336 getdate_err NEW: Unix98
1337 getdate_r NEW: GNU ext.
1339 getnameinfo NEW: IPv6
1340 getnetname NEW: Secure RPC
1341 getpmsg NEW: STREAMS
1342 getpt NEW: Unix98 PTY
1343 getrlimit64 NEW: LFS
1344 getutxent NEW: Unix98
1345 getutxid NEW: Unix98
1346 getutxline NEW: Unix98
1347 glob64 NEW: GNU ext.
1348 globfree64 NEW: GNU ext.
1349 gnu_get_libc_release NEW: GNU ext.
1350 gnu_get_libc_version NEW: GNU ext.
1351 grantpt NEW: Unix98 PTY
1352 host2netname NEW: Secure RPC
1354 iconv_close NEW: iconv
1355 iconv_open NEW: iconv
1356 if_freenameindex NEW: IPv6
1357 if_indextoname NEW: IPv6
1358 if_nameindex NEW: IPv6
1359 if_nametoindex NEW: IPv6
1360 in6addr_any NEW: IPv6
1361 in6addr_loopback NEW: IPv6
1362 inet6_isipv4mapped NEW: IPv6
1363 isastream NEW: STREAMS
1364 iswblank NEW: GNU ext.
1365 key_decryptsession NEW: Secure RPC
1366 key_decryptsession_pk NEW: Secure RPC
1367 key_encryptsession NEW: Secure RPC
1368 key_encryptsession_pk NEW: Secure RPC
1369 key_gendes NEW: Secure RPC
1370 key_get_conv NEW: Secure RPC
1371 key_secretkey_is_set NEW: Secure RPC
1372 key_setnet NEW: Secure RPC
1373 key_setsecret NEW: Secure RPC
1374 llrint NEW: ISO C 9x
1375 llrintf NEW: ISO C 9x
1376 llrintl NEW: ISO C 9x
1377 llround NEW: ISO C 9x
1378 llroundf NEW: ISO C 9x
1379 llroundl NEW: ISO C 9x
1384 lrintf NEW: ISO C 9x
1385 lrintl NEW: ISO C 9x
1386 lround NEW: ISO C 9x
1387 lroundf NEW: ISO C 9x
1388 lroundl NEW: ISO C 9x
1390 makecontext NEW: Unix98
1391 mempcpy NEW: GNU ext.
1394 modify_ldt NEW: kernel
1398 nearbyint NEW: ISO C 9x
1399 nearbyintf NEW: ISO C 9x
1400 nearbyintl NEW: ISO C 9x
1401 netname2host NEW: Secure RPC
1402 netname2user NEW: Secure RPC
1403 nexttoward NEW: ISO C 9x
1404 nexttowardf NEW: ISO C 9x
1405 nexttowardl NEW: ISO C 9x
1409 passwd2des NEW: Secure RPC
1411 pow10f NEW: GNU ext.
1412 pow10l NEW: GNU ext.
1415 printf_size NEW: GNU ext.
1416 printf_size_info NEW: GNU ext.
1417 profil_counter REMOVED
1418 pthread_mutexattr_getkind_np REPLACED
1419 pthread_mutexattr_setkind_np REPLACED
1420 ptsname NEW: Unix98 PTY
1421 ptsname_r NEW: Unix98 PTY
1423 putchar_locked REMOVED
1424 putgrent NEW: GNU ext.
1426 putpmsg NEW: STREAMS
1427 pututxline NEW: Unix98
1431 readdir64_r NEW: LFS
1432 remquo NEW: ISO C 9x
1433 remquof NEW: ISO C 9x
1434 remquol NEW: ISO C 9x
1436 roundf NEW: ISO C 9x
1437 roundl NEW: ISO C 9x
1439 scalbln NEW: ISO C 9x
1440 scalblnf NEW: ISO C 9x
1441 scalblnl NEW: ISO C 9x
1443 sendfile NEW: kernel
1444 setcontext NEW: Unix98
1445 setrlimit64 NEW: LFS
1446 setutxent NEW: Unix98
1448 sigignore NEW: Unix98
1449 sigqueue NEW: POSIX.1b
1450 sigrelse NEW: Unix98
1451 sigset NEW: POSIX.1b
1452 sigtimedwait NEW: POSIX.1b
1453 sigwaitinfo NEW: POSIX.1b
1454 sincos NEW: GNU ext.
1455 sincosf NEW: GNU ext.
1456 sincosl NEW: GNU ext.
1460 strcasestr NEW: GNU ext.
1461 strtoimax NEW: ISO C 9x
1462 strtoumax NEW: ISO C 9x
1463 strverscmp NEW: GNU ext.
1464 svcauthdes_stats NEW: Secure RPC
1465 svcunix_create NEW: sunrpc etx
1466 svcunixfd_create NEW: sunrpc ext
1467 swapcontext NEW: Unix98
1468 tcgetsid NEW: Unix98 PTY
1469 tdestroy NEW: GNU ext.
1470 tgamma NEW: ISO C 9x
1471 tgammaf NEW: ISO C 9x
1472 tgammal NEW: ISO C 9x
1476 truncf NEW: ISO C 9x
1477 truncl NEW: ISO C 9x
1479 unlockpt NEW: Unix98 PTY
1480 updwtmpx NEW: Unix98
1481 user2netname NEW: Secure RPC
1482 utmpxname NEW: Unix98
1483 versionsort NEW: GNU ext.
1484 versionsort64 NEW: GNU ext.
1486 wcscasecmp NEW: GNU ext.
1487 wcsncasecmp NEW: GNU ext.
1488 wcsnlen NEW: GNU ext.
1489 wcstoimax NEW: ISO C 9x
1490 wcstoll NEW: ISO C 9x
1491 wcstoull NEW: ISO C 9x
1492 wcstoumax NEW: ISO C 9x
1494 wordexp NEW: POSIX.2
1495 wordfree NEW: POSIX.2
1496 write_profiling REMOVED
1497 xdecrypt NEW: Secure RPC
1498 xdr_authdes_cred NEW: Secure RPC
1499 xdr_authdes_verf NEW: Secure RPC
1500 xdr_cryptkeyarg NEW: Secure RPC
1501 xdr_cryptkeyarg2 NEW: Secure RPC
1502 xdr_cryptkeyres NEW: Secure RPC
1503 xdr_getcredres NEW: Secure RPC
1504 xdr_key_netstarg NEW: Secure RPC
1505 xdr_key_netstres NEW: Secure RPC
1506 xdr_keybuf NEW: Secure RPC
1507 xdr_keystatus NEW: Secure RPC
1508 xdr_netnamestr NEW: Secure RPC
1509 xdr_sizeof NEW: Secure RPC
1510 xdr_unixcred NEW: sunrpc ext
1511 xencrypt NEW: Secure RPC
1512 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1523 * inet_ntoa is thread-safe
1525 * updwtmp is moved from libutil to libc
1527 * rewrite of cbrt function
1529 * update of timezone data
1543 * add atoll function
1545 * fix complex problems in Berkeley DB code
1547 * fix math functions
1551 * fixed lots of header problems (especially Linux/GNU specific)
1553 * dynamic loader preserves all registers
1555 * Roland McGrath provided support for handling of auxiliary objects in
1556 the ELF dynamic loader.
1558 * support for parallel builds is improved
1562 * GNU extensions are no longer declared by default. To enable them you
1563 must define the macro `_GNU_SOURCE' in your program or compile with
1566 * The library has changed from using GNU ld symbol aliases to using weak
1567 symbols where available. The ELF object file format supports weak
1568 symbols; GNU ld also supports weak symbols in the a.out format. (There
1569 is also now support for other GNU ld extensions in ELF. Use the
1570 `--with-elf' option to configure to indicate you have ELF, and
1571 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1572 of many files which contained only symbol aliases, reducing the size of
1573 the source and the compiled library; many other files were renamed to
1574 less cryptic names previously occupied by the symbol alias files.
1575 There is a new header file <elf.h> for programs which operate on
1576 files in the ELF format.
1578 * Converted to Autoconf version 2, so `configure' has more options.
1579 Run `configure --help' to see the details.
1581 * The library can now be configured to build profiling, highly-optimized
1582 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1583 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1584 `configure' enable building these extra libraries. The shared library is
1585 built by default when using both ELF and GNU ld. When shared libraries
1586 are enabled, the new library `-ldl' is available for arbitrary run-time
1587 loading of shared objects; its interface is defined in <dlfcn.h>. The
1588 new header file <link.h> gives access to the internals of the run-time
1589 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1590 application of same name on other systems and it provides information
1591 about dynamically linked binaries.
1593 * The C library now provides the run-time support code for profiling
1594 executables compiled with `-pg'. Programs can control the profiling code
1595 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1596 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1597 the support for this file format was contributed by David Mosberger-Tang.
1599 * The math code has been replaced with a math library based on fdlibm from
1600 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1601 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1602 functions. The math functions now reside in a separate library, so
1603 programs using them will need to use `-lm' their linking commands.
1605 * John C. Bowman contributed optimized ix87 assembler inline functions.
1607 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1608 mechanism similar to that found in Solaris 2. This is now used for the
1609 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1610 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1611 file controls what services are used for each individual database. This
1612 works by loading shared libraries with names specified in `nsswitch.conf',
1613 so service modules can be changed or added at any time without even
1614 relinking any program. Currently there are the file, db, and NIS based
1615 NSS services available.
1617 * The new functions `strtoq' and `strtouq' parse integer values from
1618 strings, like `strtol' and `strtoul', but they return `long long int' and
1619 `unsigned long long int' values, respectively (64-bit quantities).
1621 * The new functions `strtof' and `strtold' parse floating-point values from
1622 strings, like `strtod', but they return `float' and `long double' values,
1623 respectively (on some machines `double' and `long double' are the same).
1625 * Ulrich Drepper has contributed new implementations of the floating-point
1626 printing and reading code used in the `printf' family of functions and
1627 `strtod', `strtof', and `strtold'. These new functions are perfectly
1628 accurate, and much faster than the old ones.
1630 * The implementation of the POSIX locale model was completely rewritten by
1631 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1632 to compile the POSIX locale definition.
1634 * The former dummy implementations of the strcoll and strxfrm function are
1635 now replaced by fully functional code contributed by Ulrich Drepper. The
1636 collation information comes from the POSIX locale definitions.
1638 * The new header <langinfo.h> defines an interface for accessing
1639 various locale-dependent data (using the locale chosen with `setlocale').
1641 * Ulrich Drepper has contributed a new suite of functions for operation on
1642 wide-character and multibyte-character strings, in <wchar.h>;
1643 and classification and case conversion of wide characters, in <wctype.h>.
1644 These new functions are conforming to the ISO C, Amendement 1 specification.
1646 * There is now a second implementation of the standard I/O library available.
1647 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1648 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1650 * You can now use positional parameter specifications in format strings
1651 for the `printf' and `scanf' families of functions. For example,
1652 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1653 ``Number 6, Mr Jones''. This is mainly useful when providing different
1654 format strings for different languages, whose grammars may dictate
1655 different orderings of the values being printed. To support this
1656 feature, the interface for `register_printf_handler' has changed; see
1657 the header file <printf.h> for details.
1659 * The `printf' and `scanf' families of functions now understand a new
1660 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1661 to group numbers as indicated by the locale; for `scanf' and friends, this
1662 says to accept as valid only a number with all the proper grouping
1663 separators in the right places. In the default "C" locale, numbers are
1664 not grouped; but locales for specific countries will define the usual
1665 conventions (i.e. separate thousands with `,' in the US locale).
1667 * The pgrp functions have been regularized, slightly incompatibly but much
1668 less confusingly. The core functions are now `getpgid' and `setpgid',
1669 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1670 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1671 provided for compatibility. There is no longer an incompatible `getpgrp'
1672 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1674 * The new header file <fts.h> and suite of functions simplify programs that
1675 operate on directory trees. This code comes from 4.4 BSD.
1677 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1678 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1679 NSS scheme used in glibc.
1681 * There is a new malloc debugging hook `__memalign_hook'.
1683 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1684 `unsigned int' in <sys/types.h>. These are for compatibility only and
1685 their use is discouraged.
1687 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1688 done differently, so that it works even without GNU ld.
1690 * New function `euidaccess' checks allowed access to a file like `access',
1691 but using the effective IDs instead of the real IDs.
1693 * The time zone data files have been updated for the latest and greatest
1694 local time conventions of the countries of the world.
1696 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1699 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1700 for formatting floating-point numbers. They are provided only for
1701 compatibility; new programs should use `sprintf' instead. There are
1702 also equivalent function for the `long double' floating-point type and
1703 all functions also exist in a reentrant form.
1705 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1706 functions for maintaining the login-record files (primarily of use to
1707 system programs such as `login'), and convenient functions for
1708 allocating and initializing a pseudo-terminal (pty) device.
1710 * Ulrich Drepper has contributed new support for System V style
1711 shared memory and IPC on systems that support it.
1713 * Ulrich Drepper has contributed several miscellaneous new functions found
1714 in System V: The `hsearch' family of functions provide an effective
1715 implementation of hash tables; `a64l' and `l64a' provide a very simple
1716 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1719 * Ulrich Drepper has contributed new reentrant counterparts for the
1720 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1722 * Ulrich Drepper has contributed new, highly-optimized versions of several
1723 string functions for the i486/Pentium family of processors.
1725 * Ulrich Drepper has updated the Linux-specific code, based largely
1726 on work done in Hongjiu Lu's version of GNU libc for Linux.
1727 The GNU library now supports Linux versions 2.0.10 and later,
1728 using the ELF object file format (i[3456]86-*-linux).
1730 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1732 * David Mosberger-Tang and Richard Henderson have ported the C library
1733 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1734 dynamic linking support for ELF/Alpha.
1736 * Richard Henderson contributed several Alpha optimized assembler function
1737 for arithmetic and string handling.
1739 * Ulrich Drepper has contributed a new set of message catalog functions to
1740 support multiple languages using the <libintl.h> interface, for use with
1741 his new package GNU gettext. Translation volunteers have contributed
1742 catalogs of the library's messages in Spanish, German, and Korean.
1744 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1745 program and the `catgets' function for reading the catalog files it
1746 creates. (The <libintl.h> interface is preferred; we include the
1747 <nl_types.h> interface using `catgets' only for source compatibility with
1748 programs already written to use it.)
1750 * New header file <values.h> gives SVID-compatible names for <limits.h>
1753 * Various new macros, declarations, and small header files for compatibility
1756 * New function `group_member' is a convenient way to check if a process has
1757 a given effective group ID.
1759 * When using GCC 2.7 and later, the socket functions are now declared in a
1760 special way so that passing an argument of type `struct sockaddr_in *',
1761 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1762 `struct sockaddr *' type, does not generate a type-clash warning.
1764 * New function `error' declared in header file <error.h> is a convenient
1765 function for printing error messages and optionally exiting; this is the
1766 canonical function used in GNU programs. The new functions `err', `warn',
1767 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1768 doing the same thing.
1770 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1771 POSIX.2 `glob' function to do ~ and {...} expansion.
1773 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1774 `clearenv' which is used in POSIX.9 is also available.
1776 * New function `getsid' returns session ID number on systems that support it.
1778 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1779 files <db.h> and <mpool.h> provide a rich set of functions for several
1780 types of simple databases stored in memory and in files, and <ndbm.h> is
1781 an old `ndbm'-compatible interface using the `db' functions. Link with
1782 `-ldb' to get these functions.
1784 * New macro `strdupa' copies a string like `strdup', but uses local stack
1785 space from `alloca' instead of dynamic heap space from `malloc'.
1787 * New function `strnlen' is like `strlen' but searches only a given maximum
1788 number of characters for the null terminator. `stpncpy', `strndup' and
1789 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1792 * New function `statfs' in header <sys/statfs.h>.
1794 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1795 provide convenient functions for operating on blocks of null-terminated
1798 * A new suite of functions in <utmp.h> handle all the details of reading
1799 and writing the utmp file.
1801 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1804 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1805 completely POSIX compliant and also implemented the extended functionality
1806 to handle alternate digit representation and alternate era date formats.
1808 * Ulrich Drepper provided an implementation of the `strptime' function
1809 defined in XPG4.2 which transforms a string into a `struct tm' value.
1811 * Paul Eggert provided the tzselect shell script as part of the timezone
1812 code. The shell script makes it easy to select the correct timezone
1815 * The implementation of the malloc family of functions is completely replaced
1816 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1817 The implementation uses the mmap function (if available) and it is
1818 optimized for the use in multi threaded programs.
1820 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1821 functions. This new functionality is usable by specifying a special
1822 salt string and it is compatible with implementation on *BSD systems.
1824 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1825 `getsubopt' to handle second level command line options, `bsd_signal'
1826 to access BSD style `signal' functionality, the obsolete `regexp' style
1829 * the `lchown' function is available on system which support this
1832 * The implementation of the shadow password handling function was contributed
1835 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1837 * POSIX.1g support was added. The <sys/select.h> header is available,
1838 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1839 implementation of `getaddrinfo'.
1843 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1845 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1846 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1848 * The new function `daemon' from 4.4 BSD is useful for server programs that
1849 want to put themselves in the background.
1851 * Joel Sherrill has contributed support for several standalone boards that
1852 run without an operating system.
1854 * `printf', `scanf' and friends now accept a `q' type modifier for long
1855 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1857 * All of the code taken from BSD (notably most of the math and networking
1858 routines) has been updated from the BSD 4.4-Lite release.
1860 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1862 * The new functions `getdomainname' and `setdomainname' fetch or change the
1863 YP/NIS domain name. These are system calls which exist on systems which
1866 * The time zone data files have been updated for the latest international
1869 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1870 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1874 * The C library now includes support for Sun RPC, from Sun's free
1875 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1876 are included. (There is still no support for YP.)
1878 * Tom Quinn has contributed a port of the C library to SGI machines running
1879 Irix 4 (mips-sgi-irix4).
1881 * The new `lockf' function is a simplified interface to the locking
1882 facilities of `fcntl', included for compatibility.
1884 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1886 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1888 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1891 * The error message printed by `assert' for a failed assertion now includes
1892 the name of the program (if using GNU ld) and the name of the calling
1893 function (with versions of GCC that support this).
1895 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1897 * The library now includes the <sys/mman.h> header file and memory
1898 management functions `mmap', `munmap', `mprotect', `msync', and
1899 `madvise', on systems that support those facilities.
1901 * The interface for `mcheck' has changed slightly: the function called to
1902 abort the program when an allocation inconsistency is detected now takes
1903 an argument that indicates the type of failure. The new function
1904 `mprobe' lets you request a consistency check for a particular block at
1905 any time (checks are normally done only when you call `free' or `realloc'
1908 * It is now possible to easily cross-compile the C library, building on one
1909 system a library to run on another machine and/or operating system. All
1910 you need to do is set the variable `HOST_CC' in `configparms' to the
1911 native compiler for programs to run on the machine you are building on (a
1912 few generator programs are used on Unix systems); set `CC' to the
1915 * The new function `fexecve' (only implemented on the GNU system) executes
1916 a program file given a file descriptor already open on the file.
1920 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1921 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1923 * You can set the variable `libprefix' in `configparms' to specify a prefix
1924 to be prepended to installed library files; this makes it easy to install
1925 the GNU C library to be linked as `-lgnuc' or whatever.
1927 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1928 copies a limited number of characters from a string, and returns the
1929 address of the last character written.
1931 * You no longer need to check for whether the installed `stddef.h' is
1932 compatible with the GNU C library. configure now checks for you.
1934 * You can now define a per-stream `fileno' function to convert the
1935 stream's cookie into an integral file descriptor.
1937 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1938 allocates zero bytes of storage, and returns a unique pointer which
1939 you can pass to `realloc' or `free'. The behavior is undefined if
1940 you dereference this pointer.
1942 * The C library now runs on Sony NEWS m68k machines running either
1943 NewsOS 3 or NewsOS 4.
1945 * The new `syscall' function is a system-dependent primitive function
1946 for invoking system calls. It has the canonical behavior on Unix
1947 systems, including unreliable return values for some calls (such as
1948 `pipe', `fork' and `getppid').
1950 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1951 to `EAGAIN', which is the preferred name. On systems whose kernels
1952 use two distinct codes, the C library now translates EWOULDBLOCK to
1953 EAGAIN in every system call function.
1957 * The GNU C Library Reference Manual is now distributed with the library.
1958 `make dvi' will produce a DVI file of the printed manual.
1959 `make info' will produce Info files that you can read on line using C-h i
1960 in Emacs or the `info' program.
1961 Please send comments on the manual to bug-glibc-manual@gnu.org.
1963 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1965 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1967 * Jason Merrill has contributed a port to the Sequent Symmetry running
1968 Dynix version 3 (i386-sequent-dynix).
1970 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1971 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1973 * New function `memory_warnings' lets you arrange to get warnings when
1974 malloc is running out of memory to allocate, like Emacs gives you.
1976 * The C library now contains the relocating allocator used in Emacs 19 for
1977 its editing buffers. This allocator (ralloc) minimizes allocation
1978 overhead and fragmentation by moving allocated regions around whenever it
1979 needs to. You always refer to a ralloc'd region with a "handle" (a
1980 pointer to a pointer--an object of type `void **').
1982 * There is a new `printf' format: `%m' gives you the string corresponding
1983 to the error code in `errno'.
1985 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1986 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1987 pass, the `a' modifier says to fill in a `char **' you pass with a
1990 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1991 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1992 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1994 * `mkstemp' is a traditional Unix function to atomically create and open a
1995 uniquely-named temporary file.
1999 * The standard location for the file that says what the local timezone is
2000 has changed again. It is now `/usr/local/etc/localtime' (or more
2001 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2003 * The distribution no longer contains any files with names longer than 14
2006 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2007 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2009 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2013 * The configuration process has changed quite a bit. The `configure'
2014 script is now used just like the configuration scripts for other GNU
2015 packages. The `sysdeps' directory hierarchy is much rearranged.
2016 The file `INSTALL' explains the new scheme in detail.
2018 * The header files no longer need to be processed into ANSI C and
2019 traditional C versions. There is just one set of files to install, and
2020 it will work with ANSI or old C compilers (including `gcc -traditional').
2022 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2023 MIPS DECStation running Ultrix 4.
2025 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2026 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2027 made itself into a shared library.
2029 * Yet further improved support for the i386, running 4.3 BSD-like systems
2030 (such as Mach 3 with the Unix single-server), or System V.
2032 * New function `strncasecmp' to do case-insensitive string comparison
2033 with limited length.
2035 * New function `strsep' is a reentrant alternative to `strtok'.
2037 * New functions `scandir' and `alphasort' for searching directories.
2039 * New function `setenv' is a better interface to `putenv'.
2041 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2042 function for traversing a directory tree.
2044 * The GNU obstack package is now also part of the C library.
2045 The new function `open_obstack_stream' creates a stdio stream that
2046 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2047 formatted output directly to an obstack.
2049 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2050 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2052 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2054 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2055 things to your strings.
2057 * There are some new test programs: test-fseek, testmb, and testrand.
2059 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2060 These ports are not finished, but are a good starting place for really
2061 supporting those systems.
2063 * `/etc/localtime' is now the standard location for the file that says what
2064 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2065 This follows the general principle that `/etc' is the place for all local
2066 configuration files.
2068 * The C library header files now use `extern "C"' when used by the C++
2069 compiler, so the C library should now work with C++ code.
2071 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2072 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2075 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2076 function which uses the `merge sort' algorithm, and is said to be
2077 significantly faster than the old GNU `qsort' function. Merge sort is
2078 now the standard `qsort' function. The new algorithm can require a lot
2079 of temporary storage; so, the old sorting function is called when the
2080 required storage is not available.
2082 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2083 provides the Unix `crypt' function, plus some other entry points.
2085 * The code and header files taken from 4.4 BSD have been updated with the
2086 latest files released from Berkeley.
2088 ----------------------------------------------------------------------
2089 Copyright information:
2091 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2093 Permission is granted to anyone to make or distribute verbatim copies
2094 of this document as received, in any medium, provided that the
2095 copyright notice and this permission notice are preserved,
2096 thus giving the recipient permission to redistribute in turn.
2098 Permission is granted to distribute modified versions
2099 of this document, or of portions of it,
2100 under the above conditions, provided also that they
2101 carry prominent notices stating who last changed them.
2104 version-control: never
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