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, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
13 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
14 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
15 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
16 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110,
17 10135, 10140, 10153, 10210, 10254, 10346, 10375 10545, 10716, 11174,
18 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
19 12193, 12297, 12298, 12301, 12340, 12354, 13058, 13361, 13525, 13526,
20 13527, 13528, 13529, 13530, 13531, 13532, 13533, 13547, 13551, 13552,
21 13553, 13555, 13556, 13559, 13563, 13566, 13583, 13592, 13594, 13613,
22 13618, 13637, 13656, 13658, 13673, 13691, 13695, 13704, 13705, 13706,
23 13726, 13738, 13739, 13750, 13758, 13760, 13761, 13775, 13786, 13787,
24 13792, 13806, 13824, 13840, 13841, 13844, 13846, 13851, 13852, 13854,
25 13871, 13872, 13873, 13879, 13883, 13884, 13885, 13886, 13892, 13895,
26 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
27 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
28 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13970, 13973, 13979,
29 13983, 13986, 14012, 14027, 14033, 14034, 14040, 14043, 14044, 14049,
30 14053, 14055, 14059, 14064, 14080, 14083, 14103, 14104, 14109, 14123
34 + define static_assert
38 + declare at_quick_exit and quick_exit also for ISO C11
40 + aligned_alloc. NB: The code is deliberately allows the size parameter
41 to not be a multiple of the alignment. This is a moronic requirement
42 in the standard but it is only a requirement on the caller, not the
47 + uchar.h support added
49 + CMPLX, CMPLXF, CMPLXL added
51 Implemented by Ulrich Drepper.
53 * Support for the IA-64 has been moved to ports.
55 * Remove support for anything but ELF binary format
57 * Checking versions of poll, ppoll added.
58 Implemented by Ulrich Drepper.
60 * More generic and 64-bit performance optimizations to math functions.
61 Implemented by Ulrich Drepper.
63 * New configure option --enable-obsolete-rpc makes the deprecated RPC
64 headers and functions available at compile time as they were before
65 version 2.14. This option will be removed at some time in the future
66 after the TI-RPC library becomes fully sufficient for the needs of
67 existing applications.
69 * Compatibility code for Linux kernel versions before 2.2 has been removed.
70 Note that glibc is not expected to work with any Linux kernel version
75 * The following bugs are resolved with this release:
77 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
78 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
79 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
80 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
81 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
82 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
83 13484, 13506, 13515, 13523, 13524, 13538, 13540
85 * New program pldd to list loaded object of a process
86 Implemented by Ulrich Drepper.
88 * Add nss_db support back to glibc. No more dependency on Berkeley db
89 and support for initgroups lookups.
90 Implemented by Ulrich Drepper.
92 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
95 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
98 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
100 Contributed by Liubov Dmitrieva.
102 * Optimized strchr and strrchr for SSE on x86-32.
103 Contributed by Liubov Dmitrieva.
105 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
106 for x86-64 and x86-32.
107 Contributed by Liubov Dmitrieva.
109 * New interfaces: scandirat, scandirat64
110 Implemented by Ulrich Drepper.
112 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
113 Implemented by Ulrich Drepper.
115 * nscd now also caches the netgroup database.
116 Implemented by Ulrich Drepper.
118 * Integrate libm with gcc's -ffinite-math-only option.
119 Implemented by Ulrich Drepper.
121 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
122 to math functions. Implemented by Ulrich Drepper.
124 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
125 Implemented by Ulrich Drepper.
127 * New Linux interfaces: process_vm_readv, process_vm_writev
129 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
130 Implemented by Ulrich Drepper.
132 * Optimized nearbyint and strcasecmp for PPC.
133 Implemented by Adhemerval Zanella.
135 * New locales: bho_IN, unm_US, es_CU, ta_LK
139 * The following bugs are resolved with this release:
141 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
142 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
143 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
144 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
145 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
146 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
147 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
148 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
149 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
150 12795, 12811, 12813, 12814, 12841
152 * The RPC implementation in libc is obsoleted. Old programs keep working
153 but new programs cannot be linked with the routines in libc anymore.
154 Programs in need of RPC functionality must be linked against TI-RPC.
155 The TI-RPC implementation is IPv6 enabled and there are other benefits.
157 Visible changes of this change include (obviously) the inability to link
158 programs using RPC functions without referencing the TI-RPC library and the
159 removal of the RPC headers from the glibc headers.
160 Implemented by Ulrich Drepper.
162 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
163 syncfs, setns, sendmmsg
165 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
166 yue_HK, lij_IT, mhr_RU
168 * New encodings: CP770, CP771, CP772, CP773, CP774
170 * New program sotruss to trace calls through PLTs
171 Implemented by Ulrich Drepper.
173 * The malloc hook implementation is marked deprecated and will be removed
174 from the default implementation in the next version. The design never
175 worked ever since the introduction of threads. Even programs which do
176 not create threads themselves can use multiple threads created internally.
180 * The following bugs are resolved with this release:
182 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
183 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
184 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
185 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
188 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
190 * POWER7 optimizations: memset, memcmp, strncmp
192 * New optimized string functions for x86-64: strnlen (SSE2),
193 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
194 Implemented by Ulrich Drepper.
198 * The following bugs are resolved with this release:
200 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
201 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
202 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
203 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
204 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
205 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
206 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
207 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
209 * New interfaces: pthread_getname_np, pthread_setname_np
211 * New Linux interface: recvmmsg
213 * STT_GNU_IFUNC implemented for Sparc by David Miller.
215 * The dynamic linker now recognizes supported ABI versions from the
216 EI_ABIVERSION field in the ELF header.
217 Implemented by Ulrich Drepper.
219 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
220 will not be used to fill in password fields in the passwd.byname replies.
221 Instead it is used to synthesize the shadow.byname table, should it be
222 missing. This is a useful mode in some installations involving Solaris.
223 Implemented by Ulrich Drepper.
225 * New locales: kok_IN, sq_MK, cv_RU
229 * The following bugs are resolved with this release:
231 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
232 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
233 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
234 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
235 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
236 10789, 10817, 10823, 10840, 10847
238 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
240 Implemented by Ulrich Drepper.
242 * Checking version of longjmp added that fails if an uninitialized stack
243 frame would be created. Implemented by Ulrich Drepper.
245 * STT_GNU_IFUNC is now supported in static executables.
246 Implemented by H.J. Lu.
248 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
250 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
251 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
252 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
253 Contributed by H.J. Lu.
255 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
256 Implemented by Ulrich Drepper.
258 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
260 Contributed by H.J. Lu.
262 * Support for fma instruction in AVX on x86-64.
263 Implemented by H.J. Lu and Ulrich Drepper.
265 * AVX support in x86-64 auditing support in ld.so.
266 Implemented by H.J. Lu.
268 * STB_GNU_UNIQUE support added.
269 Implemented by Ulrich Drepper.
271 * Implement second fallback mode for optimized DNS lookup for even more
272 broken environments. If two requests from the same port are not
273 handled correctly close the socket and open a new one before sending
274 the second request. The 'single-request-reopen' option in /etc/resolv.conf
275 can be used to select this mode right away, instead of rediscovering the
276 necessity is every process again.
277 Implemented by Ulrich Drepper.
279 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
280 Implemented by Adam Tkac.
282 * Optimized iconv conversions for S390x.
283 Implemented by Andreas Krebbel.
285 * Using condvars with PI mutexes is now more efficient due to kernel
286 support for requeueing to PI futexes. NPTL support added for x86-64.
287 Implemented by Ulrich Drepper.
289 * New locales: ps_AF, my_MM
293 * The following bugs are resolved with this release:
295 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
296 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
297 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
298 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
299 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
301 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
302 Implemented by Ulrich Drepper.
304 * New Linux interfaces: accept4, fallocate, fallocate64.
305 Implemented by Ulrich Drepper.
307 * Correct declarations of string function when used in C++ code. This
308 could lead to compile errors for invalid C++ code.
310 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
313 * New POSIX 2008 interface: psiginfo
314 Implemented by Ulrich Drepper.
316 * New ISO C++1x interfaces: quick_exit, at_quick_exit
317 Implemented by Ulrich Drepper.
319 * Support for selecting between multiple function definitions at runtime
320 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
322 * The libcrypt library can now use the hash function implementations in
323 NSS. Implemented by Ulrich Drepper.
325 * The malloc implementation can be compiled to be less memory efficient
326 but higher performing in multi-threaded programs.
327 Implemented by Ulrich Drepper.
329 * New locales: nan_TW@latin, ks_IN
331 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
332 Implemented by Ulrich Drepper.
334 * Extended printf hook support. It is possible to use user-defined types
335 and extend existing format specifiers.
336 Implemented by Ulrich Drepper.
338 * Handling for group shadow files has been added.
339 Implemented by Ulrich Drepper.
341 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
342 servers (the case, e.g., for some people using the built-in DNS
343 server in ADSL modems/routers). There is a once-per-process timeout
344 in case of a broken server. To avoid it, users can run nscd or put
345 'options single-request' in /etc/resolv.conf.
346 Implemented by Ulrich Drepper.
350 * The following bugs are resolved with this release:
352 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
353 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
354 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
355 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
356 6968, 6974, 6980, 6995, 7008, 7009, 7029
358 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
359 up at the same time. Implemented by Ulrich Drepper.
361 * TLS descriptors for LD and GD on x86 and x86-64.
362 Implemented by Alexandre Oliva.
364 * getaddrinfo now handles DCCP and UDPlite.
365 Implemented by Ulrich Drepper.
367 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
368 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
369 Implemented by Ulrich Drepper.
371 * New implementation of memmem, strstr, and strcasestr which is O(n).
372 Implemented by Eric Blake.
374 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
376 * Implement "e" option for popen to open file descriptor with the
377 close-on-exec flag set. Implemented by Ulrich Drepper.
379 * Implement "b" mode for fmemopen. In this mode writes writes don't
380 implicitly add a NUL byte and seeks from the end of the buffer really
381 use the buffer end, not the string length as the basis.
382 Implemented by Ulrich Drepper.
384 * Many functions, exported and internal, now atomically set the close-on-exec
385 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
387 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
389 Implemented by Pravin Satpute.
391 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
395 * The following bugs are resolved with this release:
397 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
398 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
399 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
400 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
401 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
402 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
403 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
405 * New locales: bo_CN, bo_IN, shs_CA.
407 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
409 * Sorting rules for some Indian languages (Devanagari and Gujarati).
410 Implemented by Pravin Satpute.
412 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
414 * nscd caches now all timeouts for DNS entries
415 Implemented by Ulrich Drepper.
417 * nscd is more efficient and wakes up less often.
418 Implemented by Ulrich Drepper.
420 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
421 vdprintf, and obstack_vprintf.
422 Implemented by Jakub Jelinek.
424 * Faster memset for x86-64.
425 Implemented by Harsha Jagasia and H.J. Lu.
427 * Faster memcpy on x86.
428 Implemented by Ulrich Drepper.
430 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
431 Implemented by Ulrich Drepper.
433 * Faster sqrt and sqrtf implemention for some PPC variants.
434 Implemented by Steven Munroe.
438 * The following bugs are resolved with this release:
440 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
441 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
442 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
443 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
444 5071, 5103, 5104, 5112, 5113, 5184, 5186
446 * More checking functions: fread, fread_unlocked, open*, mq_open.
447 Implemented by Jakub Jelinek and Ulrich Drepper.
449 * Extend fortification to C++. Implemented by Jakub Jelinek.
451 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
452 by not recognizing 'a' as a modifier when those specs are requested.
453 Implemented by Jakub Jelinek.
455 * PPC optimizations to math and string functions.
456 Implemented by Steven Munroe.
458 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
459 options to be passed. Implemented by Ulrich Drepper.
461 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
463 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
464 Implemented by Ulrich Drepper.
466 * Handle private futexes in the NPTL implementation.
467 Implemented by Jakub Jelinek and Ulrich Drepper.
469 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
470 Implemented by Roland McGrath and Ulrich Drepper.
472 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
474 * SHA-256 and SHA-512 based password encryption.
475 Implemented by Ulrich Drepper.
477 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
478 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
481 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
482 Implemented by Ulrich Drepper.
486 * The following bugs are resolved with this release:
488 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
489 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
490 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
491 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
492 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
493 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
494 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
497 * New Linux interfaces: epoll_pwait, sched_getcpu.
499 * New generic interfaces: strerror_l.
501 * nscd can now cache the services database. Implemented by Ulrich Drepper.
505 * The following bugs are resolved with this release:
507 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
508 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
509 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
510 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
511 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
512 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
513 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
514 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
515 3225, 3251, 3252, 3253, 3273
517 * For Linux, the sorting of addresses returned by getaddrinfo now also
518 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
519 Implemented by Ulrich Drepper.
521 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
522 Implemented by Ulrich Drepper.
524 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
526 * New iconv module for MIK. Contributed by Alexander Shopov.
528 * For sites with broken group and/or passwd database, the auto-propagate
529 option of nscd can prevent creating ID lookup entries from the results
530 of a name lookup and vice versa. This usually is no problem but some
531 site might have problems with the default behavior.
532 Implemented by Ulrich Drepper.
534 * Iterating over entire database in NIS can be slow. With the
535 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
536 to trade time for memory. The entire database will be read at once.
537 Implemented by Ulrich Drepper.
539 * The interfaces introduced in RFC 3542 have been implemented by
542 * Support for the new ELF hash table format was added by Ulrich Drepper.
544 * Support for priority inheritance mutexes added by Jakub Jelinek and
547 * Support for priority protected mutexes added by Jakub Jelinek.
549 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
550 or_IN, csb_PL, fy_NL, sr_ME.
554 * More overflow detection functions.
556 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
557 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
559 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
560 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
561 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
562 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
563 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
564 by Masahide Washizawa.
566 * It is now possible to install audit libraries for the dynamic linker using
567 LD_AUDIT. Implemented by Ulrich Drepper.
569 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
570 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
571 For a libc and libpthread that works well on Linux 2.4 kernels, we
572 recommend using the stable 2.3 branch.
574 * The new function open_wmemstream acts like open_memstream,
575 but uses a wchar_t wide character buffer.
577 * The new function ppoll is an improved version of poll, similar to pselect.
579 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
580 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
581 renameat, unlinkat, linkat, symlinkat, readlinkat.
583 * New Linux kernel system calls: unshare,
584 inotify_init, inotify_add_watch, inotify_rm_watch.
586 * The euidaccess function is now also known by the alias eaccess,
587 for compatibility with some other systems.
589 * Timezone data updated to 2006b version.
593 * The following bugs are resolved with this release:
595 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
596 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
597 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
598 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
599 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
600 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
602 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
604 * As of this release, GCC 4 can be used to compile the C Library.
606 * Timezone data updated to 2005m version.
610 * The following bugs are resolved with this release:
612 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
613 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
614 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
615 777, 787, 821, 822, 823, 825
617 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
621 * Support for RFC 3678. Real implementations exist only for Linux so far.
622 Implemented by Ulrich Drepper.
624 * nscd can now cache entries persistently. Expiring entries are reloaded.
625 For speedups the cache can be shared in memory with client processes.
626 Implemented by Ulrich Drepper.
628 * nscd can now perform SELinux checks.
629 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
631 * getaddrinfo queries are now cached. Canonical name lookup is performed
633 Implemented by Ulrich Drepper.
635 * The nothrow function attribute is used when headers are used by gcc when
636 compiling C code. This can avoid significant amounts of exception
639 * The malloc functions perform more error checking and are stricter when
640 it comes to reacting on errors. The default action is to terminate
641 the process after showing an error message. Implemented by Ulrich Drepper.
643 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
644 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
646 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
647 namespaces using the new function dlmopen(). This feature is of course,
648 like most other dynamic loading functionality, not available in statically
649 linked applications. Implemented by Ulrich Drepper.
651 * Low-overhead boundary checking variants of string and some stdio functions
652 were added. These are to be used in conjunction with a gcc patch by
653 Jakub Jelinek which adds calls to these functions if possible.
654 Implemented by Jakub Jelinek and Ulrich Drepper.
656 * Old code for several operating systems and machine architectures that
657 have not been in working condition in a long time have been removed from
658 the main source tree maintained by the GNU C Library's maintainers.
659 These files are now reside in the separate `ports' source module
660 that is usable as an add-on when building the library.
664 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
665 interrogate the dynamic linker, compatible with the Solaris interface.
667 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
668 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
670 * getifaddrs now uses the netlink interface on Linux to get its information.
671 Implemented by Thorsten Kukuk.
673 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
674 Implemented by Ulrich Drepper.
676 * support for non-executable stacks on x86 has been added. Changes mostly
679 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
682 * getaddrinfo now performs destination address selection according to
687 * Thread-safe interfaces for many functions that access locale data
688 were added in version 2.3, but these features were omitted from NEWS.
689 Many functions have variants with an `_l' suffix that take a `locale_t'
690 object as a parameter rather than consulting the current locale.
691 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
692 create and maintain `locale_t' objects. Additionally, the new function
693 `uselocale' sets "the current locale" (as used by functions not so
694 parameterized) set for an individual thread. These features were added
695 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
697 * The functions getresuid, getresgid, setresuid, and setresgid, which
698 have long been available on Linux, are now declared in <unistd.h>
699 and are now also available on the Hurd.
701 * ELF thread-local storage support (TLS) now works on x86-64.
703 * The new dynamic string token $LIB is expanded in shared library names.
704 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
706 * Aldy Hernandez contributed complete software floating point support for
707 PowerPC machines with no FPU.
709 * fexecve is implemented on Linux.
711 * The `btowc' function should work at least twice as fast due to
712 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
714 * With approriate thread add-ons cancelable functions are now implemented
715 in libc.so as well. No need to call the function in libpthread. This
716 change allowed to finally disable the incorrect and expensive handling
717 of weak definition in ld.so.
719 * Yet more PLT entries in libc.so have been removed. We finally arrived
720 at the bare minimum. Startup times improved appropriately.
722 * Support for the new Linux/x86 system call interface was added. The
723 AT_SYSINFO auxiliary vector entry is recognized and handled.
727 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
730 * iconv (the program and the interface) now accepts empty names (excluding
731 options like //TRANSLIT) to mean "use charset of current locale".
733 * localedef can now transliterate characters in strings which are not in
734 the provided charmap. The information from the input locale is used.
736 * Prelinking support was added for ELF targets. This requires additional
737 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
739 * Read-only stdio streams now use mmap to speed up operation by eliminating
740 copying and buffer underflows. To use add 'm' to the mode string of
741 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
743 * The malloc functions were completely rewritten by Wolfram Gloger based
744 on Doug Lea's malloc-2.7.0.c.
746 * Isamu Hasegawa contributed a completely new and POSIX-conformant
747 implementation of regex.
749 * Bruno Haible upgraded the iconv and locale implementation to support
752 * Contents of the LC_* and LANG environment variables in the CEN style are
753 not recognized anymore. It never was used. Change by Ulrich Drepper.
755 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
756 thread-local storage (TLS) ABI on some platforms.
757 Changes by Ulrich Drepper. SH support by Kaz Kojima.
759 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
760 EUC-JISX0213, and TSCII.
762 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
763 BSD-compatible interface for getting all network interface addresses.
764 Implementation for IPv4 by Roland McGrath.
766 * Loading of locale data is faster due to the introduction of a locale
767 archive. Implemented by Roland McGrath and Ulrich Drepper.
769 * Startup times are significantly reduced by not using exported functions
770 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
773 * Steven Munroe contributed a port to PowerPC64/Linux.
777 * The Hurd now uses the GNU libio implementation of stdio rather than the
778 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
780 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
781 with the same behavior as the Linux system call of the same name.
785 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
786 128-bit long double format.
788 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
789 IBM1161, and IBM1162 charsets.
791 * Andreas Jaeger contributed a port to x86-64/Linux.
793 * Peter Bruin contributed a port to PowerPC/Hurd.
795 * libc functions using I/O streams now can handle wide-oriented streams
798 * optimizations in the dynamic linker. Binaries created by recent binutils
799 versions start up quicker due to reduced time spent on relocations.
801 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
805 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
806 asinh, atanh, j0 for the 128-bit long double format.
808 * Bruno Haible updated all the code handling Unicode in some form to
811 * Speed of regex for single-byte locales is back to previous levels.
812 Patch by Isamu Hasegawa.
814 * Alpha, SPARC, and IA-64 now also using floating stacks.
816 * Startup time of internationalized applications greatly improved through
817 iconv cache. Use iconvconfig to generate the cache file.
818 Contributed by Ulrich Drepper.
820 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
821 severe performance problems. Patch by David Mosberger.
823 * The Hurd port got a lot more functionality like AIO, various stdio
824 extensions, etc. Mainly done by Roland McGrath.
826 * mtrace can now lookup symbols in shared libraries.
830 * Intel's IA-64 math library is largely integrated. It provides fast and
831 accurate implementatations for most basic and standard math functions
832 in float, double, and long double format.
834 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
835 and asin for the 96-bit long double format and asin, log, tan for the
836 128-bit long double format.
838 * The beginning of a last-bit accurate math library by IBM Haifa were added.
839 The basic double functions exist today. Contributed by Abraham Ziv
840 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
841 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
843 * An asynchronous name lookup library was added. The interface is designed
844 after POSIX AIO. The proposal was circulated beforehand to get comments.
845 No negative ones came in. Implemented by Ulrich Drepper.
847 * Port to S390/64bit contributed by Martin Schwidefsky
848 <schwidefsky@de.ibm.com>.
850 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
851 of functions for Linux/IA-64.
853 * The RPC code is now thread safe. Threads can now use the same service
854 of different services at the same time. Patch by Eric Norum
855 <eric.norum@usask.ca> with some help by Ulrich Drepper.
857 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
858 family of functions for Linux/S390.
860 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
861 of functions for Linux/x86.
863 * Port to Linux/CRIS contributed by Axis Communications.
867 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
868 we can now check for namespace violations and missing declarations. The
869 result is that almost all headers are now Unix-compliant (as defined in
870 the upcoming XPG6). The negative side is that some programs might need
871 corrections, too, if they depend on the incorrect form of the headers in
872 previous versions which defined too many symbols and included too many
875 * regex now handles multibyte character sets correctly.
876 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
878 * iconv (the program) does now conform to the upcoming XPG6 and handles
879 charmaps. Instead of the charset names the path of charmaps can be
880 provided and the conversion happens based on this data.
881 Contributed by Ulrich Drepper.
883 * The locale program now provides detailed information about the installed
888 only lists the names of the supported locales
892 provides details such as country, language, and codeset name.
893 Contributed by Ulrich Drepper.
897 * The gencat program now parses the input file according to the charset
898 selected by the LC_CTYPE category. This is important for stateful
899 character sets. To make generating catalogs easier there is a way
900 to overwrite the charset selected by the locale: before the first
901 message or $ quote line the catalog can contain a line like
905 to select the charset (ISO-8859-2 in this case).
907 Implemented by Shinya Hanataka and Ulrich Drepper.
909 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
910 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
911 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
913 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
914 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
916 * The LANGUAGE environment variable is now ignored unless the locale is
917 changed from the default "C" locale.
919 * The usual bug fixes.
923 * Greg McGary added runtime support for bounds checking using gcc's
924 new -fbounded-pointers option. ix86 target is complete. PowerPC
927 * Thorsten Kukuk added secure mode support to nscd.
929 * The Berkeley db libraries have been removed.
931 Related, the nss_db module is now in a separate package since it
932 obviously requires a database library being available.
934 * Wide character I/O streams implemented by Ulrich Drepper.
936 * Functions from the extended socket API added by Ulrich Drepper.
938 * Functions feenableexcept and fedisableexcept to control the
939 behaviour of individual exceptions have been added by Andreas Jaeger.
941 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
943 * The resolver code has been updated from bind 8.2.3-T5B which supports
944 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
947 This change could in some situations effect backward compatibility. Since
948 now `_res' is a thread-local instead of a global variable, modifying it
949 in one thread does not have any effect in other threads.
951 The resolver library was also extended to allow IPv6 as the transport
952 protocol for the requests. This work was done by Stig Venaas.
954 * Compatibility code for K&R C compilers has been removed from the
955 header files. A ISO C compiler is needed to use the library
956 (conforming to either C89 or C99 standard).
958 * Complete rewrite of the localedef program to support multibyte character
959 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
960 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
961 Implemented by Ulrich Drepper.
963 Bruno Haible significantly improved the generation and use of the data
964 structures for the wide character tables.
966 * Plural handling in gettext implemented by Ulrich Drepper.
968 * The utmp daemon has been removed.
970 * The port to MIPS-Linux has been finished by Andreas Jaeger.
972 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
975 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
977 * POSIX barriers implemented by Kaz Kylheku.
979 * POSIX spawn function family implemented by Ulrich Drepper.
981 * POSIX spinlocks are now available.
983 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
985 * the configure option --enable-kernel=X.Y.Z allows to strip out
986 compatibility for kernel versions before X.Y.Z. This is currently only
987 implemented for Linux.
989 * the sockaddr_in6 structure changed. The IPv6 working group added a new
990 field sin6_scope_id. This means that all programs using IPv6 should be
991 recompiled. Don't expect binary compatibility with previous glibc
994 * various conversion modules for IBM character sets contributed by
997 * IA-64 port by Jes Sorensen and HJ Lu.
1011 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1013 * New xdr functions are added; some rpc functions are now 64bit clean.
1015 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1017 * Fixed known incompatibilities with glibc 2.0.
1019 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1021 * Optimized a number of functions (especially the ELF dynamic loader).
1023 * Update timezone data files.
1025 * lots of charmaps corrections
1027 * some new locale definitions and charmaps
1032 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1033 conform to POSIX member type requirements. Symbol versions have been
1034 adjusted as needed within the library, and for direct use by applications,
1035 but there is potential for problems if third-party libraries use
1036 struct timeval as part of their interface. This does not present
1037 a problem for X and other "essential" system libraries.
1039 * An additional locale model to support C++ Standard Library locale
1040 model and probably more was implemented by Ulrich Drepper.
1042 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1045 * Miles Bader provided the `argp' function family to support hierachical
1046 command line argument parsing, layered on top of getopt.
1048 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1050 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1053 * scanf recognizes the %a and %A format for scanning floating point numbers.
1055 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1056 information and interfaces for the available integer types.
1058 * about 130 new math functions were added to implement the ISO C9x math
1061 * the new header <complex.h> contains definitions of the complex math
1062 functions from ISO C 9X.
1064 * the new header <tgmath.h> defines generic macros to use complex or
1065 real valued functions.
1067 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1069 * Andreas Jaeger provided a test suite for the math library.
1071 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1073 * Ulrich Drepper added character set conversion functions (iconv).
1075 * Optimized string functions have been added.
1077 * The localedata addon is now part of glibc.
1079 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1081 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1082 daemon for NSS (nscd).
1084 Missing a better place here are some numbers on improvements. Under
1085 Linux 2.1.125 un-tar-ing the kernel sources takes
1089 using local files 12.19s 6.88s 22.91s
1091 using NIS 13.92s 8.91s 26.34s
1093 using NIS & nscd 10.37s 7.34s 25.30s
1095 using NIS+ 27.57s 30.37s 640.46s
1097 using NIS+ & nscd 10.25s 7.83s 26.51s
1099 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1101 Keep in mind that non-namelookup related operations dominate above times.
1102 It was just a common complain that using NIS+ unpacking the kernel is
1105 [1] The old nscd implementation is not available anymore since it was
1106 distributed with glibc up to version 2.0.98 and thus is now replaced.
1108 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1110 * Mark Kettenis provided a Hesiod NSS module.
1112 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1113 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1115 * rcmd can now handle netgroups (Dick Streefland).
1117 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1120 * Support for the IPv6 protocol has been added to the socket API, as per the
1121 latest draft standards.
1123 * Support for Linux 2.2 has been added.
1125 * Interface changes relative to the latest 2.0.x release:
1126 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1127 addseverity NEW: Unix98
1128 alphasort64 NEW: LFS
1129 argp_err_exit_status NEW: argp, GNU ext
1130 argp_error NEW: argp, GNU ext
1131 argp_failure NEW: argp, GNU ext
1132 argp_help NEW: argp, GNU ext
1133 argp_parse NEW: argp, GNU ext
1134 argp_program_bug_address NEW: argp, GNU ext
1135 argp_program_version NEW: argp, GNU ext
1136 argp_program_version_hook NEW: argp, GNU ext
1137 argp_state_help NEW: argp, GNU ext
1138 argp_usage NEW: argp, GNU ext
1139 authdes_create NEW: Secure RPC
1140 authdes_getucred NEW: Secure RPC
1141 authdes_pk_create NEW: Secure RPC
1142 backtrace NEW: GNU ext.
1143 backtrace_symbols NEW: GNU ext.
1144 backtrace_symbols_fd NEW: GNU ext.
1146 cacosf NEW: ISO C 9x
1147 cacosh NEW: ISO C 9x
1148 cacoshf NEW: ISO C 9x
1149 cacoshl NEW: ISO C 9x
1150 cacosl NEW: ISO C 9x
1157 casinf NEW: ISO C 9x
1158 casinh NEW: ISO C 9x
1159 casinhf NEW: ISO C 9x
1160 casinhl NEW: ISO C 9x
1161 casinl NEW: ISO C 9x
1163 catanf NEW: ISO C 9x
1164 catanh NEW: ISO C 9x
1165 catanhf NEW: ISO C 9x
1166 catanhl NEW: ISO C 9x
1167 catanl NEW: ISO C 9x
1168 cbc_crypt NEW: Secure RPC
1172 ccoshf NEW: ISO C 9x
1173 ccoshl NEW: ISO C 9x
1179 cimagf NEW: ISO C 9x
1180 cimagl NEW: ISO C 9x
1181 clearerr_locked REMOVED
1182 clntunix_create NEW: sunrpc ext
1184 clog10 NEW: ISO C 9x
1185 clog10f NEW: ISO C 9x
1186 clog10l NEW: ISO C 9x
1196 cprojf NEW: ISO C 9x
1197 cprojl NEW: ISO C 9x
1199 crealf NEW: ISO C 9x
1200 creall NEW: ISO C 9x
1205 csinhf NEW: ISO C 9x
1206 csinhl NEW: ISO C 9x
1209 csqrtf NEW: ISO C 9x
1210 csqrtl NEW: ISO C 9x
1214 ctanhf NEW: ISO C 9x
1215 ctanhl NEW: ISO C 9x
1217 des_setparity NEW: Secure RPC
1218 ecb_crypt NEW: Secure RPC
1219 endutxent NEW: Unix98
1221 exp10f NEW: ISO C 9x
1222 exp10l NEW: ISO C 9x
1226 fattach NEW: STREAMS
1227 fdetach NEW: STREAMS
1231 feclearexcept NEW: ISO C 9x
1232 fegetenv NEW: ISO C 9x
1233 fegetexceptflag NEW: ISO C 9x
1234 fegetround NEW: ISO C 9x
1235 feholdexcept NEW: ISO C 9x
1237 feraiseexcept NEW: ISO C 9x
1238 ferror_locked REMOVED
1239 fesetenv NEW: ISO C 9x
1240 fesetexceptflag NEW: ISO C 9x
1241 fesetround NEW: ISO C 9x
1242 fetestexcept NEW: ISO C 9x
1243 feupdateenv NEW: ISO C 9x
1244 fflush_locked REMOVED
1248 fgets_unlocked NEW: GNU ext.
1249 fileno_locked REMOVED
1261 fputc_locked REMOVED
1262 fputs_unlocked NEW: GNU ext.
1263 fread_unlocked NEW: GNU ext.
1268 fstatvfs NEW: Unix98
1272 ftruncate64 NEW: LFS
1274 fwrite_unlocked NEW: GNU ext.
1275 gai_strerror NEW: IPv6
1279 getchar_locked REMOVED
1281 getdate_err NEW: Unix98
1282 getdate_r NEW: GNU ext.
1284 getnameinfo NEW: IPv6
1285 getnetname NEW: Secure RPC
1286 getpmsg NEW: STREAMS
1287 getpt NEW: Unix98 PTY
1288 getrlimit64 NEW: LFS
1289 getutxent NEW: Unix98
1290 getutxid NEW: Unix98
1291 getutxline NEW: Unix98
1292 glob64 NEW: GNU ext.
1293 globfree64 NEW: GNU ext.
1294 gnu_get_libc_release NEW: GNU ext.
1295 gnu_get_libc_version NEW: GNU ext.
1296 grantpt NEW: Unix98 PTY
1297 host2netname NEW: Secure RPC
1299 iconv_close NEW: iconv
1300 iconv_open NEW: iconv
1301 if_freenameindex NEW: IPv6
1302 if_indextoname NEW: IPv6
1303 if_nameindex NEW: IPv6
1304 if_nametoindex NEW: IPv6
1305 in6addr_any NEW: IPv6
1306 in6addr_loopback NEW: IPv6
1307 inet6_isipv4mapped NEW: IPv6
1308 isastream NEW: STREAMS
1309 iswblank NEW: GNU ext.
1310 key_decryptsession NEW: Secure RPC
1311 key_decryptsession_pk NEW: Secure RPC
1312 key_encryptsession NEW: Secure RPC
1313 key_encryptsession_pk NEW: Secure RPC
1314 key_gendes NEW: Secure RPC
1315 key_get_conv NEW: Secure RPC
1316 key_secretkey_is_set NEW: Secure RPC
1317 key_setnet NEW: Secure RPC
1318 key_setsecret NEW: Secure RPC
1319 llrint NEW: ISO C 9x
1320 llrintf NEW: ISO C 9x
1321 llrintl NEW: ISO C 9x
1322 llround NEW: ISO C 9x
1323 llroundf NEW: ISO C 9x
1324 llroundl NEW: ISO C 9x
1329 lrintf NEW: ISO C 9x
1330 lrintl NEW: ISO C 9x
1331 lround NEW: ISO C 9x
1332 lroundf NEW: ISO C 9x
1333 lroundl NEW: ISO C 9x
1335 makecontext NEW: Unix98
1336 mempcpy NEW: GNU ext.
1339 modify_ldt NEW: kernel
1343 nearbyint NEW: ISO C 9x
1344 nearbyintf NEW: ISO C 9x
1345 nearbyintl NEW: ISO C 9x
1346 netname2host NEW: Secure RPC
1347 netname2user NEW: Secure RPC
1348 nexttoward NEW: ISO C 9x
1349 nexttowardf NEW: ISO C 9x
1350 nexttowardl NEW: ISO C 9x
1354 passwd2des NEW: Secure RPC
1356 pow10f NEW: GNU ext.
1357 pow10l NEW: GNU ext.
1360 printf_size NEW: GNU ext.
1361 printf_size_info NEW: GNU ext.
1362 profil_counter REMOVED
1363 pthread_mutexattr_getkind_np REPLACED
1364 pthread_mutexattr_setkind_np REPLACED
1365 ptsname NEW: Unix98 PTY
1366 ptsname_r NEW: Unix98 PTY
1368 putchar_locked REMOVED
1369 putgrent NEW: GNU ext.
1371 putpmsg NEW: STREAMS
1372 pututxline NEW: Unix98
1376 readdir64_r NEW: LFS
1377 remquo NEW: ISO C 9x
1378 remquof NEW: ISO C 9x
1379 remquol NEW: ISO C 9x
1381 roundf NEW: ISO C 9x
1382 roundl NEW: ISO C 9x
1384 scalbln NEW: ISO C 9x
1385 scalblnf NEW: ISO C 9x
1386 scalblnl NEW: ISO C 9x
1388 sendfile NEW: kernel
1389 setcontext NEW: Unix98
1390 setrlimit64 NEW: LFS
1391 setutxent NEW: Unix98
1393 sigignore NEW: Unix98
1394 sigqueue NEW: POSIX.1b
1395 sigrelse NEW: Unix98
1396 sigset NEW: POSIX.1b
1397 sigtimedwait NEW: POSIX.1b
1398 sigwaitinfo NEW: POSIX.1b
1399 sincos NEW: GNU ext.
1400 sincosf NEW: GNU ext.
1401 sincosl NEW: GNU ext.
1405 strcasestr NEW: GNU ext.
1406 strtoimax NEW: ISO C 9x
1407 strtoumax NEW: ISO C 9x
1408 strverscmp NEW: GNU ext.
1409 svcauthdes_stats NEW: Secure RPC
1410 svcunix_create NEW: sunrpc etx
1411 svcunixfd_create NEW: sunrpc ext
1412 swapcontext NEW: Unix98
1413 tcgetsid NEW: Unix98 PTY
1414 tdestroy NEW: GNU ext.
1415 tgamma NEW: ISO C 9x
1416 tgammaf NEW: ISO C 9x
1417 tgammal NEW: ISO C 9x
1421 truncf NEW: ISO C 9x
1422 truncl NEW: ISO C 9x
1424 unlockpt NEW: Unix98 PTY
1425 updwtmpx NEW: Unix98
1426 user2netname NEW: Secure RPC
1427 utmpxname NEW: Unix98
1428 versionsort NEW: GNU ext.
1429 versionsort64 NEW: GNU ext.
1431 wcscasecmp NEW: GNU ext.
1432 wcsncasecmp NEW: GNU ext.
1433 wcsnlen NEW: GNU ext.
1434 wcstoimax NEW: ISO C 9x
1435 wcstoll NEW: ISO C 9x
1436 wcstoull NEW: ISO C 9x
1437 wcstoumax NEW: ISO C 9x
1439 wordexp NEW: POSIX.2
1440 wordfree NEW: POSIX.2
1441 write_profiling REMOVED
1442 xdecrypt NEW: Secure RPC
1443 xdr_authdes_cred NEW: Secure RPC
1444 xdr_authdes_verf NEW: Secure RPC
1445 xdr_cryptkeyarg NEW: Secure RPC
1446 xdr_cryptkeyarg2 NEW: Secure RPC
1447 xdr_cryptkeyres NEW: Secure RPC
1448 xdr_getcredres NEW: Secure RPC
1449 xdr_key_netstarg NEW: Secure RPC
1450 xdr_key_netstres NEW: Secure RPC
1451 xdr_keybuf NEW: Secure RPC
1452 xdr_keystatus NEW: Secure RPC
1453 xdr_netnamestr NEW: Secure RPC
1454 xdr_sizeof NEW: Secure RPC
1455 xdr_unixcred NEW: sunrpc ext
1456 xencrypt NEW: Secure RPC
1457 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1468 * inet_ntoa is thread-safe
1470 * updwtmp is moved from libutil to libc
1472 * rewrite of cbrt function
1474 * update of timezone data
1488 * add atoll function
1490 * fix complex problems in Berkeley DB code
1492 * fix math functions
1496 * fixed lots of header problems (especially Linux/GNU specific)
1498 * dynamic loader preserves all registers
1500 * Roland McGrath provided support for handling of auxiliary objects in
1501 the ELF dynamic loader.
1503 * support for parallel builds is improved
1507 * GNU extensions are no longer declared by default. To enable them you
1508 must define the macro `_GNU_SOURCE' in your program or compile with
1511 * The library has changed from using GNU ld symbol aliases to using weak
1512 symbols where available. The ELF object file format supports weak
1513 symbols; GNU ld also supports weak symbols in the a.out format. (There
1514 is also now support for other GNU ld extensions in ELF. Use the
1515 `--with-elf' option to configure to indicate you have ELF, and
1516 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1517 of many files which contained only symbol aliases, reducing the size of
1518 the source and the compiled library; many other files were renamed to
1519 less cryptic names previously occupied by the symbol alias files.
1520 There is a new header file <elf.h> for programs which operate on
1521 files in the ELF format.
1523 * Converted to Autoconf version 2, so `configure' has more options.
1524 Run `configure --help' to see the details.
1526 * The library can now be configured to build profiling, highly-optimized
1527 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1528 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1529 `configure' enable building these extra libraries. The shared library is
1530 built by default when using both ELF and GNU ld. When shared libraries
1531 are enabled, the new library `-ldl' is available for arbitrary run-time
1532 loading of shared objects; its interface is defined in <dlfcn.h>. The
1533 new header file <link.h> gives access to the internals of the run-time
1534 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1535 application of same name on other systems and it provides information
1536 about dynamically linked binaries.
1538 * The C library now provides the run-time support code for profiling
1539 executables compiled with `-pg'. Programs can control the profiling code
1540 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1541 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1542 the support for this file format was contributed by David Mosberger-Tang.
1544 * The math code has been replaced with a math library based on fdlibm from
1545 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1546 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1547 functions. The math functions now reside in a separate library, so
1548 programs using them will need to use `-lm' their linking commands.
1550 * John C. Bowman contributed optimized ix87 assembler inline functions.
1552 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1553 mechanism similar to that found in Solaris 2. This is now used for the
1554 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1555 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1556 file controls what services are used for each individual database. This
1557 works by loading shared libraries with names specified in `nsswitch.conf',
1558 so service modules can be changed or added at any time without even
1559 relinking any program. Currently there are the file, db, and NIS based
1560 NSS services available.
1562 * The new functions `strtoq' and `strtouq' parse integer values from
1563 strings, like `strtol' and `strtoul', but they return `long long int' and
1564 `unsigned long long int' values, respectively (64-bit quantities).
1566 * The new functions `strtof' and `strtold' parse floating-point values from
1567 strings, like `strtod', but they return `float' and `long double' values,
1568 respectively (on some machines `double' and `long double' are the same).
1570 * Ulrich Drepper has contributed new implementations of the floating-point
1571 printing and reading code used in the `printf' family of functions and
1572 `strtod', `strtof', and `strtold'. These new functions are perfectly
1573 accurate, and much faster than the old ones.
1575 * The implementation of the POSIX locale model was completely rewritten by
1576 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1577 to compile the POSIX locale definition.
1579 * The former dummy implementations of the strcoll and strxfrm function are
1580 now replaced by fully functional code contributed by Ulrich Drepper. The
1581 collation information comes from the POSIX locale definitions.
1583 * The new header <langinfo.h> defines an interface for accessing
1584 various locale-dependent data (using the locale chosen with `setlocale').
1586 * Ulrich Drepper has contributed a new suite of functions for operation on
1587 wide-character and multibyte-character strings, in <wchar.h>;
1588 and classification and case conversion of wide characters, in <wctype.h>.
1589 These new functions are conforming to the ISO C, Amendement 1 specification.
1591 * There is now a second implementation of the standard I/O library available.
1592 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1593 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1595 * You can now use positional parameter specifications in format strings
1596 for the `printf' and `scanf' families of functions. For example,
1597 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1598 ``Number 6, Mr Jones''. This is mainly useful when providing different
1599 format strings for different languages, whose grammars may dictate
1600 different orderings of the values being printed. To support this
1601 feature, the interface for `register_printf_handler' has changed; see
1602 the header file <printf.h> for details.
1604 * The `printf' and `scanf' families of functions now understand a new
1605 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1606 to group numbers as indicated by the locale; for `scanf' and friends, this
1607 says to accept as valid only a number with all the proper grouping
1608 separators in the right places. In the default "C" locale, numbers are
1609 not grouped; but locales for specific countries will define the usual
1610 conventions (i.e. separate thousands with `,' in the US locale).
1612 * The pgrp functions have been regularized, slightly incompatibly but much
1613 less confusingly. The core functions are now `getpgid' and `setpgid',
1614 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1615 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1616 provided for compatibility. There is no longer an incompatible `getpgrp'
1617 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1619 * The new header file <fts.h> and suite of functions simplify programs that
1620 operate on directory trees. This code comes from 4.4 BSD.
1622 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1623 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1624 NSS scheme used in glibc.
1626 * There is a new malloc debugging hook `__memalign_hook'.
1628 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1629 `unsigned int' in <sys/types.h>. These are for compatibility only and
1630 their use is discouraged.
1632 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1633 done differently, so that it works even without GNU ld.
1635 * New function `euidaccess' checks allowed access to a file like `access',
1636 but using the effective IDs instead of the real IDs.
1638 * The time zone data files have been updated for the latest and greatest
1639 local time conventions of the countries of the world.
1641 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1644 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1645 for formatting floating-point numbers. They are provided only for
1646 compatibility; new programs should use `sprintf' instead. There are
1647 also equivalent function for the `long double' floating-point type and
1648 all functions also exist in a reentrant form.
1650 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1651 functions for maintaining the login-record files (primarily of use to
1652 system programs such as `login'), and convenient functions for
1653 allocating and initializing a pseudo-terminal (pty) device.
1655 * Ulrich Drepper has contributed new support for System V style
1656 shared memory and IPC on systems that support it.
1658 * Ulrich Drepper has contributed several miscellaneous new functions found
1659 in System V: The `hsearch' family of functions provide an effective
1660 implementation of hash tables; `a64l' and `l64a' provide a very simple
1661 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1664 * Ulrich Drepper has contributed new reentrant counterparts for the
1665 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1667 * Ulrich Drepper has contributed new, highly-optimized versions of several
1668 string functions for the i486/Pentium family of processors.
1670 * Ulrich Drepper has updated the Linux-specific code, based largely
1671 on work done in Hongjiu Lu's version of GNU libc for Linux.
1672 The GNU library now supports Linux versions 2.0.10 and later,
1673 using the ELF object file format (i[3456]86-*-linux).
1675 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1677 * David Mosberger-Tang and Richard Henderson have ported the C library
1678 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1679 dynamic linking support for ELF/Alpha.
1681 * Richard Henderson contributed several Alpha optimized assembler function
1682 for arithmetic and string handling.
1684 * Ulrich Drepper has contributed a new set of message catalog functions to
1685 support multiple languages using the <libintl.h> interface, for use with
1686 his new package GNU gettext. Translation volunteers have contributed
1687 catalogs of the library's messages in Spanish, German, and Korean.
1689 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1690 program and the `catgets' function for reading the catalog files it
1691 creates. (The <libintl.h> interface is preferred; we include the
1692 <nl_types.h> interface using `catgets' only for source compatibility with
1693 programs already written to use it.)
1695 * New header file <values.h> gives SVID-compatible names for <limits.h>
1698 * Various new macros, declarations, and small header files for compatibility
1701 * New function `group_member' is a convenient way to check if a process has
1702 a given effective group ID.
1704 * When using GCC 2.7 and later, the socket functions are now declared in a
1705 special way so that passing an argument of type `struct sockaddr_in *',
1706 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1707 `struct sockaddr *' type, does not generate a type-clash warning.
1709 * New function `error' declared in header file <error.h> is a convenient
1710 function for printing error messages and optionally exiting; this is the
1711 canonical function used in GNU programs. The new functions `err', `warn',
1712 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1713 doing the same thing.
1715 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1716 POSIX.2 `glob' function to do ~ and {...} expansion.
1718 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1719 `clearenv' which is used in POSIX.9 is also available.
1721 * New function `getsid' returns session ID number on systems that support it.
1723 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1724 files <db.h> and <mpool.h> provide a rich set of functions for several
1725 types of simple databases stored in memory and in files, and <ndbm.h> is
1726 an old `ndbm'-compatible interface using the `db' functions. Link with
1727 `-ldb' to get these functions.
1729 * New macro `strdupa' copies a string like `strdup', but uses local stack
1730 space from `alloca' instead of dynamic heap space from `malloc'.
1732 * New function `strnlen' is like `strlen' but searches only a given maximum
1733 number of characters for the null terminator. `stpncpy', `strndup' and
1734 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1737 * New function `statfs' in header <sys/statfs.h>.
1739 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1740 provide convenient functions for operating on blocks of null-terminated
1743 * A new suite of functions in <utmp.h> handle all the details of reading
1744 and writing the utmp file.
1746 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1749 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1750 completely POSIX compliant and also implemented the extended functionality
1751 to handle alternate digit representation and alternate era date formats.
1753 * Ulrich Drepper provided an implementation of the `strptime' function
1754 defined in XPG4.2 which transforms a string into a `struct tm' value.
1756 * Paul Eggert provided the tzselect shell script as part of the timezone
1757 code. The shell script makes it easy to select the correct timezone
1760 * The implementation of the malloc family of functions is completely replaced
1761 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1762 The implementation uses the mmap function (if available) and it is
1763 optimized for the use in multi threaded programs.
1765 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1766 functions. This new functionality is usable by specifying a special
1767 salt string and it is compatible with implementation on *BSD systems.
1769 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1770 `getsubopt' to handle second level command line options, `bsd_signal'
1771 to access BSD style `signal' functionality, the obsolete `regexp' style
1774 * the `lchown' function is available on system which support this
1777 * The implementation of the shadow password handling function was contributed
1780 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1782 * POSIX.1g support was added. The <sys/select.h> header is available,
1783 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1784 implementation of `getaddrinfo'.
1788 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1790 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1791 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1793 * The new function `daemon' from 4.4 BSD is useful for server programs that
1794 want to put themselves in the background.
1796 * Joel Sherrill has contributed support for several standalone boards that
1797 run without an operating system.
1799 * `printf', `scanf' and friends now accept a `q' type modifier for long
1800 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1802 * All of the code taken from BSD (notably most of the math and networking
1803 routines) has been updated from the BSD 4.4-Lite release.
1805 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1807 * The new functions `getdomainname' and `setdomainname' fetch or change the
1808 YP/NIS domain name. These are system calls which exist on systems which
1811 * The time zone data files have been updated for the latest international
1814 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1815 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1819 * The C library now includes support for Sun RPC, from Sun's free
1820 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1821 are included. (There is still no support for YP.)
1823 * Tom Quinn has contributed a port of the C library to SGI machines running
1824 Irix 4 (mips-sgi-irix4).
1826 * The new `lockf' function is a simplified interface to the locking
1827 facilities of `fcntl', included for compatibility.
1829 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1831 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1833 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1836 * The error message printed by `assert' for a failed assertion now includes
1837 the name of the program (if using GNU ld) and the name of the calling
1838 function (with versions of GCC that support this).
1840 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1842 * The library now includes the <sys/mman.h> header file and memory
1843 management functions `mmap', `munmap', `mprotect', `msync', and
1844 `madvise', on systems that support those facilities.
1846 * The interface for `mcheck' has changed slightly: the function called to
1847 abort the program when an allocation inconsistency is detected now takes
1848 an argument that indicates the type of failure. The new function
1849 `mprobe' lets you request a consistency check for a particular block at
1850 any time (checks are normally done only when you call `free' or `realloc'
1853 * It is now possible to easily cross-compile the C library, building on one
1854 system a library to run on another machine and/or operating system. All
1855 you need to do is set the variable `HOST_CC' in `configparms' to the
1856 native compiler for programs to run on the machine you are building on (a
1857 few generator programs are used on Unix systems); set `CC' to the
1860 * The new function `fexecve' (only implemented on the GNU system) executes
1861 a program file given a file descriptor already open on the file.
1865 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1866 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1868 * You can set the variable `libprefix' in `configparms' to specify a prefix
1869 to be prepended to installed library files; this makes it easy to install
1870 the GNU C library to be linked as `-lgnuc' or whatever.
1872 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1873 copies a limited number of characters from a string, and returns the
1874 address of the last character written.
1876 * You no longer need to check for whether the installed `stddef.h' is
1877 compatible with the GNU C library. configure now checks for you.
1879 * You can now define a per-stream `fileno' function to convert the
1880 stream's cookie into an integral file descriptor.
1882 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1883 allocates zero bytes of storage, and returns a unique pointer which
1884 you can pass to `realloc' or `free'. The behavior is undefined if
1885 you dereference this pointer.
1887 * The C library now runs on Sony NEWS m68k machines running either
1888 NewsOS 3 or NewsOS 4.
1890 * The new `syscall' function is a system-dependent primitive function
1891 for invoking system calls. It has the canonical behavior on Unix
1892 systems, including unreliable return values for some calls (such as
1893 `pipe', `fork' and `getppid').
1895 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1896 to `EAGAIN', which is the preferred name. On systems whose kernels
1897 use two distinct codes, the C library now translates EWOULDBLOCK to
1898 EAGAIN in every system call function.
1902 * The GNU C Library Reference Manual is now distributed with the library.
1903 `make dvi' will produce a DVI file of the printed manual.
1904 `make info' will produce Info files that you can read on line using C-h i
1905 in Emacs or the `info' program.
1906 Please send comments on the manual to bug-glibc-manual@gnu.org.
1908 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1910 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1912 * Jason Merrill has contributed a port to the Sequent Symmetry running
1913 Dynix version 3 (i386-sequent-dynix).
1915 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1916 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1918 * New function `memory_warnings' lets you arrange to get warnings when
1919 malloc is running out of memory to allocate, like Emacs gives you.
1921 * The C library now contains the relocating allocator used in Emacs 19 for
1922 its editing buffers. This allocator (ralloc) minimizes allocation
1923 overhead and fragmentation by moving allocated regions around whenever it
1924 needs to. You always refer to a ralloc'd region with a "handle" (a
1925 pointer to a pointer--an object of type `void **').
1927 * There is a new `printf' format: `%m' gives you the string corresponding
1928 to the error code in `errno'.
1930 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1931 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1932 pass, the `a' modifier says to fill in a `char **' you pass with a
1935 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1936 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1937 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1939 * `mkstemp' is a traditional Unix function to atomically create and open a
1940 uniquely-named temporary file.
1944 * The standard location for the file that says what the local timezone is
1945 has changed again. It is now `/usr/local/etc/localtime' (or more
1946 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1948 * The distribution no longer contains any files with names longer than 14
1951 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1952 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1954 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1958 * The configuration process has changed quite a bit. The `configure'
1959 script is now used just like the configuration scripts for other GNU
1960 packages. The `sysdeps' directory hierarchy is much rearranged.
1961 The file `INSTALL' explains the new scheme in detail.
1963 * The header files no longer need to be processed into ANSI C and
1964 traditional C versions. There is just one set of files to install, and
1965 it will work with ANSI or old C compilers (including `gcc -traditional').
1967 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1968 MIPS DECStation running Ultrix 4.
1970 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1971 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1972 made itself into a shared library.
1974 * Yet further improved support for the i386, running 4.3 BSD-like systems
1975 (such as Mach 3 with the Unix single-server), or System V.
1977 * New function `strncasecmp' to do case-insensitive string comparison
1978 with limited length.
1980 * New function `strsep' is a reentrant alternative to `strtok'.
1982 * New functions `scandir' and `alphasort' for searching directories.
1984 * New function `setenv' is a better interface to `putenv'.
1986 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1987 function for traversing a directory tree.
1989 * The GNU obstack package is now also part of the C library.
1990 The new function `open_obstack_stream' creates a stdio stream that
1991 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1992 formatted output directly to an obstack.
1994 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1995 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1997 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1999 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2000 things to your strings.
2002 * There are some new test programs: test-fseek, testmb, and testrand.
2004 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2005 These ports are not finished, but are a good starting place for really
2006 supporting those systems.
2008 * `/etc/localtime' is now the standard location for the file that says what
2009 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2010 This follows the general principle that `/etc' is the place for all local
2011 configuration files.
2013 * The C library header files now use `extern "C"' when used by the C++
2014 compiler, so the C library should now work with C++ code.
2016 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2017 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2020 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2021 function which uses the `merge sort' algorithm, and is said to be
2022 significantly faster than the old GNU `qsort' function. Merge sort is
2023 now the standard `qsort' function. The new algorithm can require a lot
2024 of temporary storage; so, the old sorting function is called when the
2025 required storage is not available.
2027 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2028 provides the Unix `crypt' function, plus some other entry points.
2030 * The code and header files taken from 4.4 BSD have been updated with the
2031 latest files released from Berkeley.
2033 ----------------------------------------------------------------------
2034 Copyright information:
2036 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2038 Permission is granted to anyone to make or distribute verbatim copies
2039 of this document as received, in any medium, provided that the
2040 copyright notice and this permission notice are preserved,
2041 thus giving the recipient permission to redistribute in turn.
2043 Permission is granted to distribute modified versions
2044 of this document, or of portions of it,
2045 under the above conditions, provided also that they
2046 carry prominent notices stating who last changed them.
2049 version-control: never
projects / platform / upstream / glibc.git / blob