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, 10135,
17 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
18 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
19 12193, 12297, 12298, 12301, 12340, 12354, 12495, 13058, 13361, 13525,
20 13526, 13527, 13528, 13529, 13530, 13531, 13532, 13533, 13547, 13551,
21 13552, 13553, 13555, 13556, 13559, 13563, 13566, 13576, 13583, 13592,
22 13594, 13613, 13618, 13637, 13656, 13658, 13673, 13691, 13695, 13704,
23 13705, 13706, 13726, 13738, 13739, 13750, 13758, 13760, 13761, 13775,
24 13786, 13787, 13792, 13806, 13824, 13840, 13841, 13844, 13846, 13851,
25 13852, 13854, 13871, 13872, 13873, 13879, 13883, 13884, 13885, 13886,
26 13892, 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916,
27 13917, 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927,
28 13928, 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968,
29 13970, 13973, 13979, 13983, 13986, 14012, 14027, 14033, 14034, 14036,
30 14040, 14043, 14044, 14049, 14053, 14055, 14059, 14064, 14080, 14083,
31 14103, 14104, 14109, 14122, 14123, 14153
35 + define static_assert
39 + declare at_quick_exit and quick_exit also for ISO C11
41 + aligned_alloc. NB: The code is deliberately allows the size parameter
42 to not be a multiple of the alignment. This is a moronic requirement
43 in the standard but it is only a requirement on the caller, not the
48 + uchar.h support added
50 + CMPLX, CMPLXF, CMPLXL added
52 Implemented by Ulrich Drepper.
54 * Support for the IA-64 has been moved to ports.
56 * Remove support for anything but ELF binary format
58 * Checking versions of poll, ppoll added.
59 Implemented by Ulrich Drepper.
61 * More generic and 64-bit performance optimizations to math functions.
62 Implemented by Ulrich Drepper.
64 * New configure option --enable-obsolete-rpc makes the deprecated RPC
65 headers and functions available at compile time as they were before
66 version 2.14. This option will be removed at some time in the future
67 after the TI-RPC library becomes fully sufficient for the needs of
68 existing applications.
70 * Compatibility code for Linux kernel versions before 2.4 has been removed.
71 Note that glibc is not expected to work with any Linux kernel version
74 * New header <sys/auxv.h> and function getauxval allowing easy access to
75 the AT_* key-value pairs passed from the Linux kernel. The header also
76 defines the HWCAP_* bits associated with the AT_HWCAP key.
82 * The following bugs are resolved with this release:
84 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
85 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
86 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
87 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
88 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
89 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
90 13484, 13506, 13515, 13523, 13524, 13538, 13540
92 * New program pldd to list loaded object of a process
93 Implemented by Ulrich Drepper.
95 * Add nss_db support back to glibc. No more dependency on Berkeley db
96 and support for initgroups lookups.
97 Implemented by Ulrich Drepper.
99 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
100 Contributed by HJ Lu.
102 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
103 Contributed by HJ Lu.
105 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
106 on x86-32 and x86-64.
107 Contributed by Liubov Dmitrieva.
109 * Optimized strchr and strrchr for SSE on x86-32.
110 Contributed by Liubov Dmitrieva.
112 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
113 for x86-64 and x86-32.
114 Contributed by Liubov Dmitrieva.
116 * New interfaces: scandirat, scandirat64
117 Implemented by Ulrich Drepper.
119 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
120 Implemented by Ulrich Drepper.
122 * nscd now also caches the netgroup database.
123 Implemented by Ulrich Drepper.
125 * Integrate libm with gcc's -ffinite-math-only option.
126 Implemented by Ulrich Drepper.
128 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
129 to math functions. Implemented by Ulrich Drepper.
131 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
132 Implemented by Ulrich Drepper.
134 * New Linux interfaces: process_vm_readv, process_vm_writev
136 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
137 Implemented by Ulrich Drepper.
139 * Optimized nearbyint and strcasecmp for PPC.
140 Implemented by Adhemerval Zanella.
142 * New locales: bho_IN, unm_US, es_CU, ta_LK
146 * The following bugs are resolved with this release:
148 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
149 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
150 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
151 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
152 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
153 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
154 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
155 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
156 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
157 12795, 12811, 12813, 12814, 12841
159 * The RPC implementation in libc is obsoleted. Old programs keep working
160 but new programs cannot be linked with the routines in libc anymore.
161 Programs in need of RPC functionality must be linked against TI-RPC.
162 The TI-RPC implementation is IPv6 enabled and there are other benefits.
164 Visible changes of this change include (obviously) the inability to link
165 programs using RPC functions without referencing the TI-RPC library and the
166 removal of the RPC headers from the glibc headers.
167 Implemented by Ulrich Drepper.
169 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
170 syncfs, setns, sendmmsg
172 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
173 yue_HK, lij_IT, mhr_RU
175 * New encodings: CP770, CP771, CP772, CP773, CP774
177 * New program sotruss to trace calls through PLTs
178 Implemented by Ulrich Drepper.
180 * The malloc hook implementation is marked deprecated and will be removed
181 from the default implementation in the next version. The design never
182 worked ever since the introduction of threads. Even programs which do
183 not create threads themselves can use multiple threads created internally.
187 * The following bugs are resolved with this release:
189 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
190 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
191 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
192 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
195 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
197 * POWER7 optimizations: memset, memcmp, strncmp
199 * New optimized string functions for x86-64: strnlen (SSE2),
200 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
201 Implemented by Ulrich Drepper.
205 * The following bugs are resolved with this release:
207 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
208 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
209 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
210 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
211 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
212 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
213 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
214 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
216 * New interfaces: pthread_getname_np, pthread_setname_np
218 * New Linux interface: recvmmsg
220 * STT_GNU_IFUNC implemented for Sparc by David Miller.
222 * The dynamic linker now recognizes supported ABI versions from the
223 EI_ABIVERSION field in the ELF header.
224 Implemented by Ulrich Drepper.
226 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
227 will not be used to fill in password fields in the passwd.byname replies.
228 Instead it is used to synthesize the shadow.byname table, should it be
229 missing. This is a useful mode in some installations involving Solaris.
230 Implemented by Ulrich Drepper.
232 * New locales: kok_IN, sq_MK, cv_RU
236 * The following bugs are resolved with this release:
238 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
239 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
240 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
241 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
242 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
243 10789, 10817, 10823, 10840, 10847
245 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
247 Implemented by Ulrich Drepper.
249 * Checking version of longjmp added that fails if an uninitialized stack
250 frame would be created. Implemented by Ulrich Drepper.
252 * STT_GNU_IFUNC is now supported in static executables.
253 Implemented by H.J. Lu.
255 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
257 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
258 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
259 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
260 Contributed by H.J. Lu.
262 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
263 Implemented by Ulrich Drepper.
265 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
267 Contributed by H.J. Lu.
269 * Support for fma instruction in AVX on x86-64.
270 Implemented by H.J. Lu and Ulrich Drepper.
272 * AVX support in x86-64 auditing support in ld.so.
273 Implemented by H.J. Lu.
275 * STB_GNU_UNIQUE support added.
276 Implemented by Ulrich Drepper.
278 * Implement second fallback mode for optimized DNS lookup for even more
279 broken environments. If two requests from the same port are not
280 handled correctly close the socket and open a new one before sending
281 the second request. The 'single-request-reopen' option in /etc/resolv.conf
282 can be used to select this mode right away, instead of rediscovering the
283 necessity is every process again.
284 Implemented by Ulrich Drepper.
286 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
287 Implemented by Adam Tkac.
289 * Optimized iconv conversions for S390x.
290 Implemented by Andreas Krebbel.
292 * Using condvars with PI mutexes is now more efficient due to kernel
293 support for requeueing to PI futexes. NPTL support added for x86-64.
294 Implemented by Ulrich Drepper.
296 * New locales: ps_AF, my_MM
300 * The following bugs are resolved with this release:
302 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
303 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
304 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
305 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
306 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
308 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
309 Implemented by Ulrich Drepper.
311 * New Linux interfaces: accept4, fallocate, fallocate64.
312 Implemented by Ulrich Drepper.
314 * Correct declarations of string function when used in C++ code. This
315 could lead to compile errors for invalid C++ code.
317 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
320 * New POSIX 2008 interface: psiginfo
321 Implemented by Ulrich Drepper.
323 * New ISO C++1x interfaces: quick_exit, at_quick_exit
324 Implemented by Ulrich Drepper.
326 * Support for selecting between multiple function definitions at runtime
327 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
329 * The libcrypt library can now use the hash function implementations in
330 NSS. Implemented by Ulrich Drepper.
332 * The malloc implementation can be compiled to be less memory efficient
333 but higher performing in multi-threaded programs.
334 Implemented by Ulrich Drepper.
336 * New locales: nan_TW@latin, ks_IN
338 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
339 Implemented by Ulrich Drepper.
341 * Extended printf hook support. It is possible to use user-defined types
342 and extend existing format specifiers.
343 Implemented by Ulrich Drepper.
345 * Handling for group shadow files has been added.
346 Implemented by Ulrich Drepper.
348 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
349 servers (the case, e.g., for some people using the built-in DNS
350 server in ADSL modems/routers). There is a once-per-process timeout
351 in case of a broken server. To avoid it, users can run nscd or put
352 'options single-request' in /etc/resolv.conf.
353 Implemented by Ulrich Drepper.
357 * The following bugs are resolved with this release:
359 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
360 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
361 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
362 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
363 6968, 6974, 6980, 6995, 7008, 7009, 7029
365 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
366 up at the same time. Implemented by Ulrich Drepper.
368 * TLS descriptors for LD and GD on x86 and x86-64.
369 Implemented by Alexandre Oliva.
371 * getaddrinfo now handles DCCP and UDPlite.
372 Implemented by Ulrich Drepper.
374 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
375 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
376 Implemented by Ulrich Drepper.
378 * New implementation of memmem, strstr, and strcasestr which is O(n).
379 Implemented by Eric Blake.
381 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
383 * Implement "e" option for popen to open file descriptor with the
384 close-on-exec flag set. Implemented by Ulrich Drepper.
386 * Implement "b" mode for fmemopen. In this mode writes writes don't
387 implicitly add a NUL byte and seeks from the end of the buffer really
388 use the buffer end, not the string length as the basis.
389 Implemented by Ulrich Drepper.
391 * Many functions, exported and internal, now atomically set the close-on-exec
392 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
394 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
396 Implemented by Pravin Satpute.
398 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
402 * The following bugs are resolved with this release:
404 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
405 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
406 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
407 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
408 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
409 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
410 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
412 * New locales: bo_CN, bo_IN, shs_CA.
414 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
416 * Sorting rules for some Indian languages (Devanagari and Gujarati).
417 Implemented by Pravin Satpute.
419 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
421 * nscd caches now all timeouts for DNS entries
422 Implemented by Ulrich Drepper.
424 * nscd is more efficient and wakes up less often.
425 Implemented by Ulrich Drepper.
427 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
428 vdprintf, and obstack_vprintf.
429 Implemented by Jakub Jelinek.
431 * Faster memset for x86-64.
432 Implemented by Harsha Jagasia and H.J. Lu.
434 * Faster memcpy on x86.
435 Implemented by Ulrich Drepper.
437 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
438 Implemented by Ulrich Drepper.
440 * Faster sqrt and sqrtf implemention for some PPC variants.
441 Implemented by Steven Munroe.
445 * The following bugs are resolved with this release:
447 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
448 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
449 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
450 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
451 5071, 5103, 5104, 5112, 5113, 5184, 5186
453 * More checking functions: fread, fread_unlocked, open*, mq_open.
454 Implemented by Jakub Jelinek and Ulrich Drepper.
456 * Extend fortification to C++. Implemented by Jakub Jelinek.
458 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
459 by not recognizing 'a' as a modifier when those specs are requested.
460 Implemented by Jakub Jelinek.
462 * PPC optimizations to math and string functions.
463 Implemented by Steven Munroe.
465 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
466 options to be passed. Implemented by Ulrich Drepper.
468 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
470 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
471 Implemented by Ulrich Drepper.
473 * Handle private futexes in the NPTL implementation.
474 Implemented by Jakub Jelinek and Ulrich Drepper.
476 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
477 Implemented by Roland McGrath and Ulrich Drepper.
479 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
481 * SHA-256 and SHA-512 based password encryption.
482 Implemented by Ulrich Drepper.
484 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
485 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
488 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
489 Implemented by Ulrich Drepper.
493 * The following bugs are resolved with this release:
495 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
496 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
497 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
498 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
499 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
500 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
501 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
504 * New Linux interfaces: epoll_pwait, sched_getcpu.
506 * New generic interfaces: strerror_l.
508 * nscd can now cache the services database. Implemented by Ulrich Drepper.
512 * The following bugs are resolved with this release:
514 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
515 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
516 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
517 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
518 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
519 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
520 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
521 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
522 3225, 3251, 3252, 3253, 3273
524 * For Linux, the sorting of addresses returned by getaddrinfo now also
525 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
526 Implemented by Ulrich Drepper.
528 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
529 Implemented by Ulrich Drepper.
531 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
533 * New iconv module for MIK. Contributed by Alexander Shopov.
535 * For sites with broken group and/or passwd database, the auto-propagate
536 option of nscd can prevent creating ID lookup entries from the results
537 of a name lookup and vice versa. This usually is no problem but some
538 site might have problems with the default behavior.
539 Implemented by Ulrich Drepper.
541 * Iterating over entire database in NIS can be slow. With the
542 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
543 to trade time for memory. The entire database will be read at once.
544 Implemented by Ulrich Drepper.
546 * The interfaces introduced in RFC 3542 have been implemented by
549 * Support for the new ELF hash table format was added by Ulrich Drepper.
551 * Support for priority inheritance mutexes added by Jakub Jelinek and
554 * Support for priority protected mutexes added by Jakub Jelinek.
556 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
557 or_IN, csb_PL, fy_NL, sr_ME.
561 * More overflow detection functions.
563 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
564 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
566 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
567 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
568 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
569 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
570 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
571 by Masahide Washizawa.
573 * It is now possible to install audit libraries for the dynamic linker using
574 LD_AUDIT. Implemented by Ulrich Drepper.
576 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
577 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
578 For a libc and libpthread that works well on Linux 2.4 kernels, we
579 recommend using the stable 2.3 branch.
581 * The new function open_wmemstream acts like open_memstream,
582 but uses a wchar_t wide character buffer.
584 * The new function ppoll is an improved version of poll, similar to pselect.
586 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
587 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
588 renameat, unlinkat, linkat, symlinkat, readlinkat.
590 * New Linux kernel system calls: unshare,
591 inotify_init, inotify_add_watch, inotify_rm_watch.
593 * The euidaccess function is now also known by the alias eaccess,
594 for compatibility with some other systems.
596 * Timezone data updated to 2006b version.
600 * The following bugs are resolved with this release:
602 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
603 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
604 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
605 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
606 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
607 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
609 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
611 * As of this release, GCC 4 can be used to compile the C Library.
613 * Timezone data updated to 2005m version.
617 * The following bugs are resolved with this release:
619 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
620 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
621 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
622 777, 787, 821, 822, 823, 825
624 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
628 * Support for RFC 3678. Real implementations exist only for Linux so far.
629 Implemented by Ulrich Drepper.
631 * nscd can now cache entries persistently. Expiring entries are reloaded.
632 For speedups the cache can be shared in memory with client processes.
633 Implemented by Ulrich Drepper.
635 * nscd can now perform SELinux checks.
636 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
638 * getaddrinfo queries are now cached. Canonical name lookup is performed
640 Implemented by Ulrich Drepper.
642 * The nothrow function attribute is used when headers are used by gcc when
643 compiling C code. This can avoid significant amounts of exception
646 * The malloc functions perform more error checking and are stricter when
647 it comes to reacting on errors. The default action is to terminate
648 the process after showing an error message. Implemented by Ulrich Drepper.
650 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
651 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
653 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
654 namespaces using the new function dlmopen(). This feature is of course,
655 like most other dynamic loading functionality, not available in statically
656 linked applications. Implemented by Ulrich Drepper.
658 * Low-overhead boundary checking variants of string and some stdio functions
659 were added. These are to be used in conjunction with a gcc patch by
660 Jakub Jelinek which adds calls to these functions if possible.
661 Implemented by Jakub Jelinek and Ulrich Drepper.
663 * Old code for several operating systems and machine architectures that
664 have not been in working condition in a long time have been removed from
665 the main source tree maintained by the GNU C Library's maintainers.
666 These files are now reside in the separate `ports' source module
667 that is usable as an add-on when building the library.
671 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
672 interrogate the dynamic linker, compatible with the Solaris interface.
674 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
675 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
677 * getifaddrs now uses the netlink interface on Linux to get its information.
678 Implemented by Thorsten Kukuk.
680 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
681 Implemented by Ulrich Drepper.
683 * support for non-executable stacks on x86 has been added. Changes mostly
686 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
689 * getaddrinfo now performs destination address selection according to
694 * Thread-safe interfaces for many functions that access locale data
695 were added in version 2.3, but these features were omitted from NEWS.
696 Many functions have variants with an `_l' suffix that take a `locale_t'
697 object as a parameter rather than consulting the current locale.
698 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
699 create and maintain `locale_t' objects. Additionally, the new function
700 `uselocale' sets "the current locale" (as used by functions not so
701 parameterized) set for an individual thread. These features were added
702 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
704 * The functions getresuid, getresgid, setresuid, and setresgid, which
705 have long been available on Linux, are now declared in <unistd.h>
706 and are now also available on the Hurd.
708 * ELF thread-local storage support (TLS) now works on x86-64.
710 * The new dynamic string token $LIB is expanded in shared library names.
711 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
713 * Aldy Hernandez contributed complete software floating point support for
714 PowerPC machines with no FPU.
716 * fexecve is implemented on Linux.
718 * The `btowc' function should work at least twice as fast due to
719 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
721 * With approriate thread add-ons cancelable functions are now implemented
722 in libc.so as well. No need to call the function in libpthread. This
723 change allowed to finally disable the incorrect and expensive handling
724 of weak definition in ld.so.
726 * Yet more PLT entries in libc.so have been removed. We finally arrived
727 at the bare minimum. Startup times improved appropriately.
729 * Support for the new Linux/x86 system call interface was added. The
730 AT_SYSINFO auxiliary vector entry is recognized and handled.
734 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
737 * iconv (the program and the interface) now accepts empty names (excluding
738 options like //TRANSLIT) to mean "use charset of current locale".
740 * localedef can now transliterate characters in strings which are not in
741 the provided charmap. The information from the input locale is used.
743 * Prelinking support was added for ELF targets. This requires additional
744 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
746 * Read-only stdio streams now use mmap to speed up operation by eliminating
747 copying and buffer underflows. To use add 'm' to the mode string of
748 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
750 * The malloc functions were completely rewritten by Wolfram Gloger based
751 on Doug Lea's malloc-2.7.0.c.
753 * Isamu Hasegawa contributed a completely new and POSIX-conformant
754 implementation of regex.
756 * Bruno Haible upgraded the iconv and locale implementation to support
759 * Contents of the LC_* and LANG environment variables in the CEN style are
760 not recognized anymore. It never was used. Change by Ulrich Drepper.
762 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
763 thread-local storage (TLS) ABI on some platforms.
764 Changes by Ulrich Drepper. SH support by Kaz Kojima.
766 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
767 EUC-JISX0213, and TSCII.
769 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
770 BSD-compatible interface for getting all network interface addresses.
771 Implementation for IPv4 by Roland McGrath.
773 * Loading of locale data is faster due to the introduction of a locale
774 archive. Implemented by Roland McGrath and Ulrich Drepper.
776 * Startup times are significantly reduced by not using exported functions
777 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
780 * Steven Munroe contributed a port to PowerPC64/Linux.
784 * The Hurd now uses the GNU libio implementation of stdio rather than the
785 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
787 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
788 with the same behavior as the Linux system call of the same name.
792 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
793 128-bit long double format.
795 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
796 IBM1161, and IBM1162 charsets.
798 * Andreas Jaeger contributed a port to x86-64/Linux.
800 * Peter Bruin contributed a port to PowerPC/Hurd.
802 * libc functions using I/O streams now can handle wide-oriented streams
805 * optimizations in the dynamic linker. Binaries created by recent binutils
806 versions start up quicker due to reduced time spent on relocations.
808 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
812 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
813 asinh, atanh, j0 for the 128-bit long double format.
815 * Bruno Haible updated all the code handling Unicode in some form to
818 * Speed of regex for single-byte locales is back to previous levels.
819 Patch by Isamu Hasegawa.
821 * Alpha, SPARC, and IA-64 now also using floating stacks.
823 * Startup time of internationalized applications greatly improved through
824 iconv cache. Use iconvconfig to generate the cache file.
825 Contributed by Ulrich Drepper.
827 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
828 severe performance problems. Patch by David Mosberger.
830 * The Hurd port got a lot more functionality like AIO, various stdio
831 extensions, etc. Mainly done by Roland McGrath.
833 * mtrace can now lookup symbols in shared libraries.
837 * Intel's IA-64 math library is largely integrated. It provides fast and
838 accurate implementatations for most basic and standard math functions
839 in float, double, and long double format.
841 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
842 and asin for the 96-bit long double format and asin, log, tan for the
843 128-bit long double format.
845 * The beginning of a last-bit accurate math library by IBM Haifa were added.
846 The basic double functions exist today. Contributed by Abraham Ziv
847 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
848 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
850 * An asynchronous name lookup library was added. The interface is designed
851 after POSIX AIO. The proposal was circulated beforehand to get comments.
852 No negative ones came in. Implemented by Ulrich Drepper.
854 * Port to S390/64bit contributed by Martin Schwidefsky
855 <schwidefsky@de.ibm.com>.
857 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
858 of functions for Linux/IA-64.
860 * The RPC code is now thread safe. Threads can now use the same service
861 of different services at the same time. Patch by Eric Norum
862 <eric.norum@usask.ca> with some help by Ulrich Drepper.
864 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
865 family of functions for Linux/S390.
867 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
868 of functions for Linux/x86.
870 * Port to Linux/CRIS contributed by Axis Communications.
874 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
875 we can now check for namespace violations and missing declarations. The
876 result is that almost all headers are now Unix-compliant (as defined in
877 the upcoming XPG6). The negative side is that some programs might need
878 corrections, too, if they depend on the incorrect form of the headers in
879 previous versions which defined too many symbols and included too many
882 * regex now handles multibyte character sets correctly.
883 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
885 * iconv (the program) does now conform to the upcoming XPG6 and handles
886 charmaps. Instead of the charset names the path of charmaps can be
887 provided and the conversion happens based on this data.
888 Contributed by Ulrich Drepper.
890 * The locale program now provides detailed information about the installed
895 only lists the names of the supported locales
899 provides details such as country, language, and codeset name.
900 Contributed by Ulrich Drepper.
904 * The gencat program now parses the input file according to the charset
905 selected by the LC_CTYPE category. This is important for stateful
906 character sets. To make generating catalogs easier there is a way
907 to overwrite the charset selected by the locale: before the first
908 message or $ quote line the catalog can contain a line like
912 to select the charset (ISO-8859-2 in this case).
914 Implemented by Shinya Hanataka and Ulrich Drepper.
916 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
917 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
918 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
920 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
921 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
923 * The LANGUAGE environment variable is now ignored unless the locale is
924 changed from the default "C" locale.
926 * The usual bug fixes.
930 * Greg McGary added runtime support for bounds checking using gcc's
931 new -fbounded-pointers option. ix86 target is complete. PowerPC
934 * Thorsten Kukuk added secure mode support to nscd.
936 * The Berkeley db libraries have been removed.
938 Related, the nss_db module is now in a separate package since it
939 obviously requires a database library being available.
941 * Wide character I/O streams implemented by Ulrich Drepper.
943 * Functions from the extended socket API added by Ulrich Drepper.
945 * Functions feenableexcept and fedisableexcept to control the
946 behaviour of individual exceptions have been added by Andreas Jaeger.
948 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
950 * The resolver code has been updated from bind 8.2.3-T5B which supports
951 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
954 This change could in some situations effect backward compatibility. Since
955 now `_res' is a thread-local instead of a global variable, modifying it
956 in one thread does not have any effect in other threads.
958 The resolver library was also extended to allow IPv6 as the transport
959 protocol for the requests. This work was done by Stig Venaas.
961 * Compatibility code for K&R C compilers has been removed from the
962 header files. A ISO C compiler is needed to use the library
963 (conforming to either C89 or C99 standard).
965 * Complete rewrite of the localedef program to support multibyte character
966 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
967 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
968 Implemented by Ulrich Drepper.
970 Bruno Haible significantly improved the generation and use of the data
971 structures for the wide character tables.
973 * Plural handling in gettext implemented by Ulrich Drepper.
975 * The utmp daemon has been removed.
977 * The port to MIPS-Linux has been finished by Andreas Jaeger.
979 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
982 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
984 * POSIX barriers implemented by Kaz Kylheku.
986 * POSIX spawn function family implemented by Ulrich Drepper.
988 * POSIX spinlocks are now available.
990 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
992 * the configure option --enable-kernel=X.Y.Z allows to strip out
993 compatibility for kernel versions before X.Y.Z. This is currently only
994 implemented for Linux.
996 * the sockaddr_in6 structure changed. The IPv6 working group added a new
997 field sin6_scope_id. This means that all programs using IPv6 should be
998 recompiled. Don't expect binary compatibility with previous glibc
1001 * various conversion modules for IBM character sets contributed by
1004 * IA-64 port by Jes Sorensen and HJ Lu.
1018 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1020 * New xdr functions are added; some rpc functions are now 64bit clean.
1022 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1024 * Fixed known incompatibilities with glibc 2.0.
1026 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1028 * Optimized a number of functions (especially the ELF dynamic loader).
1030 * Update timezone data files.
1032 * lots of charmaps corrections
1034 * some new locale definitions and charmaps
1039 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1040 conform to POSIX member type requirements. Symbol versions have been
1041 adjusted as needed within the library, and for direct use by applications,
1042 but there is potential for problems if third-party libraries use
1043 struct timeval as part of their interface. This does not present
1044 a problem for X and other "essential" system libraries.
1046 * An additional locale model to support C++ Standard Library locale
1047 model and probably more was implemented by Ulrich Drepper.
1049 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1052 * Miles Bader provided the `argp' function family to support hierachical
1053 command line argument parsing, layered on top of getopt.
1055 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1057 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1060 * scanf recognizes the %a and %A format for scanning floating point numbers.
1062 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1063 information and interfaces for the available integer types.
1065 * about 130 new math functions were added to implement the ISO C9x math
1068 * the new header <complex.h> contains definitions of the complex math
1069 functions from ISO C 9X.
1071 * the new header <tgmath.h> defines generic macros to use complex or
1072 real valued functions.
1074 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1076 * Andreas Jaeger provided a test suite for the math library.
1078 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1080 * Ulrich Drepper added character set conversion functions (iconv).
1082 * Optimized string functions have been added.
1084 * The localedata addon is now part of glibc.
1086 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1088 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1089 daemon for NSS (nscd).
1091 Missing a better place here are some numbers on improvements. Under
1092 Linux 2.1.125 un-tar-ing the kernel sources takes
1096 using local files 12.19s 6.88s 22.91s
1098 using NIS 13.92s 8.91s 26.34s
1100 using NIS & nscd 10.37s 7.34s 25.30s
1102 using NIS+ 27.57s 30.37s 640.46s
1104 using NIS+ & nscd 10.25s 7.83s 26.51s
1106 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1108 Keep in mind that non-namelookup related operations dominate above times.
1109 It was just a common complain that using NIS+ unpacking the kernel is
1112 [1] The old nscd implementation is not available anymore since it was
1113 distributed with glibc up to version 2.0.98 and thus is now replaced.
1115 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1117 * Mark Kettenis provided a Hesiod NSS module.
1119 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1120 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1122 * rcmd can now handle netgroups (Dick Streefland).
1124 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1127 * Support for the IPv6 protocol has been added to the socket API, as per the
1128 latest draft standards.
1130 * Support for Linux 2.2 has been added.
1132 * Interface changes relative to the latest 2.0.x release:
1133 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1134 addseverity NEW: Unix98
1135 alphasort64 NEW: LFS
1136 argp_err_exit_status NEW: argp, GNU ext
1137 argp_error NEW: argp, GNU ext
1138 argp_failure NEW: argp, GNU ext
1139 argp_help NEW: argp, GNU ext
1140 argp_parse NEW: argp, GNU ext
1141 argp_program_bug_address NEW: argp, GNU ext
1142 argp_program_version NEW: argp, GNU ext
1143 argp_program_version_hook NEW: argp, GNU ext
1144 argp_state_help NEW: argp, GNU ext
1145 argp_usage NEW: argp, GNU ext
1146 authdes_create NEW: Secure RPC
1147 authdes_getucred NEW: Secure RPC
1148 authdes_pk_create NEW: Secure RPC
1149 backtrace NEW: GNU ext.
1150 backtrace_symbols NEW: GNU ext.
1151 backtrace_symbols_fd NEW: GNU ext.
1153 cacosf NEW: ISO C 9x
1154 cacosh NEW: ISO C 9x
1155 cacoshf NEW: ISO C 9x
1156 cacoshl NEW: ISO C 9x
1157 cacosl NEW: ISO C 9x
1164 casinf NEW: ISO C 9x
1165 casinh NEW: ISO C 9x
1166 casinhf NEW: ISO C 9x
1167 casinhl NEW: ISO C 9x
1168 casinl NEW: ISO C 9x
1170 catanf NEW: ISO C 9x
1171 catanh NEW: ISO C 9x
1172 catanhf NEW: ISO C 9x
1173 catanhl NEW: ISO C 9x
1174 catanl NEW: ISO C 9x
1175 cbc_crypt NEW: Secure RPC
1179 ccoshf NEW: ISO C 9x
1180 ccoshl NEW: ISO C 9x
1186 cimagf NEW: ISO C 9x
1187 cimagl NEW: ISO C 9x
1188 clearerr_locked REMOVED
1189 clntunix_create NEW: sunrpc ext
1191 clog10 NEW: ISO C 9x
1192 clog10f NEW: ISO C 9x
1193 clog10l NEW: ISO C 9x
1203 cprojf NEW: ISO C 9x
1204 cprojl NEW: ISO C 9x
1206 crealf NEW: ISO C 9x
1207 creall NEW: ISO C 9x
1212 csinhf NEW: ISO C 9x
1213 csinhl NEW: ISO C 9x
1216 csqrtf NEW: ISO C 9x
1217 csqrtl NEW: ISO C 9x
1221 ctanhf NEW: ISO C 9x
1222 ctanhl NEW: ISO C 9x
1224 des_setparity NEW: Secure RPC
1225 ecb_crypt NEW: Secure RPC
1226 endutxent NEW: Unix98
1228 exp10f NEW: ISO C 9x
1229 exp10l NEW: ISO C 9x
1233 fattach NEW: STREAMS
1234 fdetach NEW: STREAMS
1238 feclearexcept NEW: ISO C 9x
1239 fegetenv NEW: ISO C 9x
1240 fegetexceptflag NEW: ISO C 9x
1241 fegetround NEW: ISO C 9x
1242 feholdexcept NEW: ISO C 9x
1244 feraiseexcept NEW: ISO C 9x
1245 ferror_locked REMOVED
1246 fesetenv NEW: ISO C 9x
1247 fesetexceptflag NEW: ISO C 9x
1248 fesetround NEW: ISO C 9x
1249 fetestexcept NEW: ISO C 9x
1250 feupdateenv NEW: ISO C 9x
1251 fflush_locked REMOVED
1255 fgets_unlocked NEW: GNU ext.
1256 fileno_locked REMOVED
1268 fputc_locked REMOVED
1269 fputs_unlocked NEW: GNU ext.
1270 fread_unlocked NEW: GNU ext.
1275 fstatvfs NEW: Unix98
1279 ftruncate64 NEW: LFS
1281 fwrite_unlocked NEW: GNU ext.
1282 gai_strerror NEW: IPv6
1286 getchar_locked REMOVED
1288 getdate_err NEW: Unix98
1289 getdate_r NEW: GNU ext.
1291 getnameinfo NEW: IPv6
1292 getnetname NEW: Secure RPC
1293 getpmsg NEW: STREAMS
1294 getpt NEW: Unix98 PTY
1295 getrlimit64 NEW: LFS
1296 getutxent NEW: Unix98
1297 getutxid NEW: Unix98
1298 getutxline NEW: Unix98
1299 glob64 NEW: GNU ext.
1300 globfree64 NEW: GNU ext.
1301 gnu_get_libc_release NEW: GNU ext.
1302 gnu_get_libc_version NEW: GNU ext.
1303 grantpt NEW: Unix98 PTY
1304 host2netname NEW: Secure RPC
1306 iconv_close NEW: iconv
1307 iconv_open NEW: iconv
1308 if_freenameindex NEW: IPv6
1309 if_indextoname NEW: IPv6
1310 if_nameindex NEW: IPv6
1311 if_nametoindex NEW: IPv6
1312 in6addr_any NEW: IPv6
1313 in6addr_loopback NEW: IPv6
1314 inet6_isipv4mapped NEW: IPv6
1315 isastream NEW: STREAMS
1316 iswblank NEW: GNU ext.
1317 key_decryptsession NEW: Secure RPC
1318 key_decryptsession_pk NEW: Secure RPC
1319 key_encryptsession NEW: Secure RPC
1320 key_encryptsession_pk NEW: Secure RPC
1321 key_gendes NEW: Secure RPC
1322 key_get_conv NEW: Secure RPC
1323 key_secretkey_is_set NEW: Secure RPC
1324 key_setnet NEW: Secure RPC
1325 key_setsecret NEW: Secure RPC
1326 llrint NEW: ISO C 9x
1327 llrintf NEW: ISO C 9x
1328 llrintl NEW: ISO C 9x
1329 llround NEW: ISO C 9x
1330 llroundf NEW: ISO C 9x
1331 llroundl NEW: ISO C 9x
1336 lrintf NEW: ISO C 9x
1337 lrintl NEW: ISO C 9x
1338 lround NEW: ISO C 9x
1339 lroundf NEW: ISO C 9x
1340 lroundl NEW: ISO C 9x
1342 makecontext NEW: Unix98
1343 mempcpy NEW: GNU ext.
1346 modify_ldt NEW: kernel
1350 nearbyint NEW: ISO C 9x
1351 nearbyintf NEW: ISO C 9x
1352 nearbyintl NEW: ISO C 9x
1353 netname2host NEW: Secure RPC
1354 netname2user NEW: Secure RPC
1355 nexttoward NEW: ISO C 9x
1356 nexttowardf NEW: ISO C 9x
1357 nexttowardl NEW: ISO C 9x
1361 passwd2des NEW: Secure RPC
1363 pow10f NEW: GNU ext.
1364 pow10l NEW: GNU ext.
1367 printf_size NEW: GNU ext.
1368 printf_size_info NEW: GNU ext.
1369 profil_counter REMOVED
1370 pthread_mutexattr_getkind_np REPLACED
1371 pthread_mutexattr_setkind_np REPLACED
1372 ptsname NEW: Unix98 PTY
1373 ptsname_r NEW: Unix98 PTY
1375 putchar_locked REMOVED
1376 putgrent NEW: GNU ext.
1378 putpmsg NEW: STREAMS
1379 pututxline NEW: Unix98
1383 readdir64_r NEW: LFS
1384 remquo NEW: ISO C 9x
1385 remquof NEW: ISO C 9x
1386 remquol NEW: ISO C 9x
1388 roundf NEW: ISO C 9x
1389 roundl NEW: ISO C 9x
1391 scalbln NEW: ISO C 9x
1392 scalblnf NEW: ISO C 9x
1393 scalblnl NEW: ISO C 9x
1395 sendfile NEW: kernel
1396 setcontext NEW: Unix98
1397 setrlimit64 NEW: LFS
1398 setutxent NEW: Unix98
1400 sigignore NEW: Unix98
1401 sigqueue NEW: POSIX.1b
1402 sigrelse NEW: Unix98
1403 sigset NEW: POSIX.1b
1404 sigtimedwait NEW: POSIX.1b
1405 sigwaitinfo NEW: POSIX.1b
1406 sincos NEW: GNU ext.
1407 sincosf NEW: GNU ext.
1408 sincosl NEW: GNU ext.
1412 strcasestr NEW: GNU ext.
1413 strtoimax NEW: ISO C 9x
1414 strtoumax NEW: ISO C 9x
1415 strverscmp NEW: GNU ext.
1416 svcauthdes_stats NEW: Secure RPC
1417 svcunix_create NEW: sunrpc etx
1418 svcunixfd_create NEW: sunrpc ext
1419 swapcontext NEW: Unix98
1420 tcgetsid NEW: Unix98 PTY
1421 tdestroy NEW: GNU ext.
1422 tgamma NEW: ISO C 9x
1423 tgammaf NEW: ISO C 9x
1424 tgammal NEW: ISO C 9x
1428 truncf NEW: ISO C 9x
1429 truncl NEW: ISO C 9x
1431 unlockpt NEW: Unix98 PTY
1432 updwtmpx NEW: Unix98
1433 user2netname NEW: Secure RPC
1434 utmpxname NEW: Unix98
1435 versionsort NEW: GNU ext.
1436 versionsort64 NEW: GNU ext.
1438 wcscasecmp NEW: GNU ext.
1439 wcsncasecmp NEW: GNU ext.
1440 wcsnlen NEW: GNU ext.
1441 wcstoimax NEW: ISO C 9x
1442 wcstoll NEW: ISO C 9x
1443 wcstoull NEW: ISO C 9x
1444 wcstoumax NEW: ISO C 9x
1446 wordexp NEW: POSIX.2
1447 wordfree NEW: POSIX.2
1448 write_profiling REMOVED
1449 xdecrypt NEW: Secure RPC
1450 xdr_authdes_cred NEW: Secure RPC
1451 xdr_authdes_verf NEW: Secure RPC
1452 xdr_cryptkeyarg NEW: Secure RPC
1453 xdr_cryptkeyarg2 NEW: Secure RPC
1454 xdr_cryptkeyres NEW: Secure RPC
1455 xdr_getcredres NEW: Secure RPC
1456 xdr_key_netstarg NEW: Secure RPC
1457 xdr_key_netstres NEW: Secure RPC
1458 xdr_keybuf NEW: Secure RPC
1459 xdr_keystatus NEW: Secure RPC
1460 xdr_netnamestr NEW: Secure RPC
1461 xdr_sizeof NEW: Secure RPC
1462 xdr_unixcred NEW: sunrpc ext
1463 xencrypt NEW: Secure RPC
1464 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1475 * inet_ntoa is thread-safe
1477 * updwtmp is moved from libutil to libc
1479 * rewrite of cbrt function
1481 * update of timezone data
1495 * add atoll function
1497 * fix complex problems in Berkeley DB code
1499 * fix math functions
1503 * fixed lots of header problems (especially Linux/GNU specific)
1505 * dynamic loader preserves all registers
1507 * Roland McGrath provided support for handling of auxiliary objects in
1508 the ELF dynamic loader.
1510 * support for parallel builds is improved
1514 * GNU extensions are no longer declared by default. To enable them you
1515 must define the macro `_GNU_SOURCE' in your program or compile with
1518 * The library has changed from using GNU ld symbol aliases to using weak
1519 symbols where available. The ELF object file format supports weak
1520 symbols; GNU ld also supports weak symbols in the a.out format. (There
1521 is also now support for other GNU ld extensions in ELF. Use the
1522 `--with-elf' option to configure to indicate you have ELF, and
1523 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1524 of many files which contained only symbol aliases, reducing the size of
1525 the source and the compiled library; many other files were renamed to
1526 less cryptic names previously occupied by the symbol alias files.
1527 There is a new header file <elf.h> for programs which operate on
1528 files in the ELF format.
1530 * Converted to Autoconf version 2, so `configure' has more options.
1531 Run `configure --help' to see the details.
1533 * The library can now be configured to build profiling, highly-optimized
1534 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1535 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1536 `configure' enable building these extra libraries. The shared library is
1537 built by default when using both ELF and GNU ld. When shared libraries
1538 are enabled, the new library `-ldl' is available for arbitrary run-time
1539 loading of shared objects; its interface is defined in <dlfcn.h>. The
1540 new header file <link.h> gives access to the internals of the run-time
1541 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1542 application of same name on other systems and it provides information
1543 about dynamically linked binaries.
1545 * The C library now provides the run-time support code for profiling
1546 executables compiled with `-pg'. Programs can control the profiling code
1547 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1548 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1549 the support for this file format was contributed by David Mosberger-Tang.
1551 * The math code has been replaced with a math library based on fdlibm from
1552 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1553 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1554 functions. The math functions now reside in a separate library, so
1555 programs using them will need to use `-lm' their linking commands.
1557 * John C. Bowman contributed optimized ix87 assembler inline functions.
1559 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1560 mechanism similar to that found in Solaris 2. This is now used for the
1561 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1562 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1563 file controls what services are used for each individual database. This
1564 works by loading shared libraries with names specified in `nsswitch.conf',
1565 so service modules can be changed or added at any time without even
1566 relinking any program. Currently there are the file, db, and NIS based
1567 NSS services available.
1569 * The new functions `strtoq' and `strtouq' parse integer values from
1570 strings, like `strtol' and `strtoul', but they return `long long int' and
1571 `unsigned long long int' values, respectively (64-bit quantities).
1573 * The new functions `strtof' and `strtold' parse floating-point values from
1574 strings, like `strtod', but they return `float' and `long double' values,
1575 respectively (on some machines `double' and `long double' are the same).
1577 * Ulrich Drepper has contributed new implementations of the floating-point
1578 printing and reading code used in the `printf' family of functions and
1579 `strtod', `strtof', and `strtold'. These new functions are perfectly
1580 accurate, and much faster than the old ones.
1582 * The implementation of the POSIX locale model was completely rewritten by
1583 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1584 to compile the POSIX locale definition.
1586 * The former dummy implementations of the strcoll and strxfrm function are
1587 now replaced by fully functional code contributed by Ulrich Drepper. The
1588 collation information comes from the POSIX locale definitions.
1590 * The new header <langinfo.h> defines an interface for accessing
1591 various locale-dependent data (using the locale chosen with `setlocale').
1593 * Ulrich Drepper has contributed a new suite of functions for operation on
1594 wide-character and multibyte-character strings, in <wchar.h>;
1595 and classification and case conversion of wide characters, in <wctype.h>.
1596 These new functions are conforming to the ISO C, Amendement 1 specification.
1598 * There is now a second implementation of the standard I/O library available.
1599 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1600 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1602 * You can now use positional parameter specifications in format strings
1603 for the `printf' and `scanf' families of functions. For example,
1604 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1605 ``Number 6, Mr Jones''. This is mainly useful when providing different
1606 format strings for different languages, whose grammars may dictate
1607 different orderings of the values being printed. To support this
1608 feature, the interface for `register_printf_handler' has changed; see
1609 the header file <printf.h> for details.
1611 * The `printf' and `scanf' families of functions now understand a new
1612 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1613 to group numbers as indicated by the locale; for `scanf' and friends, this
1614 says to accept as valid only a number with all the proper grouping
1615 separators in the right places. In the default "C" locale, numbers are
1616 not grouped; but locales for specific countries will define the usual
1617 conventions (i.e. separate thousands with `,' in the US locale).
1619 * The pgrp functions have been regularized, slightly incompatibly but much
1620 less confusingly. The core functions are now `getpgid' and `setpgid',
1621 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1622 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1623 provided for compatibility. There is no longer an incompatible `getpgrp'
1624 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1626 * The new header file <fts.h> and suite of functions simplify programs that
1627 operate on directory trees. This code comes from 4.4 BSD.
1629 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1630 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1631 NSS scheme used in glibc.
1633 * There is a new malloc debugging hook `__memalign_hook'.
1635 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1636 `unsigned int' in <sys/types.h>. These are for compatibility only and
1637 their use is discouraged.
1639 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1640 done differently, so that it works even without GNU ld.
1642 * New function `euidaccess' checks allowed access to a file like `access',
1643 but using the effective IDs instead of the real IDs.
1645 * The time zone data files have been updated for the latest and greatest
1646 local time conventions of the countries of the world.
1648 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1651 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1652 for formatting floating-point numbers. They are provided only for
1653 compatibility; new programs should use `sprintf' instead. There are
1654 also equivalent function for the `long double' floating-point type and
1655 all functions also exist in a reentrant form.
1657 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1658 functions for maintaining the login-record files (primarily of use to
1659 system programs such as `login'), and convenient functions for
1660 allocating and initializing a pseudo-terminal (pty) device.
1662 * Ulrich Drepper has contributed new support for System V style
1663 shared memory and IPC on systems that support it.
1665 * Ulrich Drepper has contributed several miscellaneous new functions found
1666 in System V: The `hsearch' family of functions provide an effective
1667 implementation of hash tables; `a64l' and `l64a' provide a very simple
1668 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1671 * Ulrich Drepper has contributed new reentrant counterparts for the
1672 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1674 * Ulrich Drepper has contributed new, highly-optimized versions of several
1675 string functions for the i486/Pentium family of processors.
1677 * Ulrich Drepper has updated the Linux-specific code, based largely
1678 on work done in Hongjiu Lu's version of GNU libc for Linux.
1679 The GNU library now supports Linux versions 2.0.10 and later,
1680 using the ELF object file format (i[3456]86-*-linux).
1682 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1684 * David Mosberger-Tang and Richard Henderson have ported the C library
1685 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1686 dynamic linking support for ELF/Alpha.
1688 * Richard Henderson contributed several Alpha optimized assembler function
1689 for arithmetic and string handling.
1691 * Ulrich Drepper has contributed a new set of message catalog functions to
1692 support multiple languages using the <libintl.h> interface, for use with
1693 his new package GNU gettext. Translation volunteers have contributed
1694 catalogs of the library's messages in Spanish, German, and Korean.
1696 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1697 program and the `catgets' function for reading the catalog files it
1698 creates. (The <libintl.h> interface is preferred; we include the
1699 <nl_types.h> interface using `catgets' only for source compatibility with
1700 programs already written to use it.)
1702 * New header file <values.h> gives SVID-compatible names for <limits.h>
1705 * Various new macros, declarations, and small header files for compatibility
1708 * New function `group_member' is a convenient way to check if a process has
1709 a given effective group ID.
1711 * When using GCC 2.7 and later, the socket functions are now declared in a
1712 special way so that passing an argument of type `struct sockaddr_in *',
1713 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1714 `struct sockaddr *' type, does not generate a type-clash warning.
1716 * New function `error' declared in header file <error.h> is a convenient
1717 function for printing error messages and optionally exiting; this is the
1718 canonical function used in GNU programs. The new functions `err', `warn',
1719 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1720 doing the same thing.
1722 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1723 POSIX.2 `glob' function to do ~ and {...} expansion.
1725 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1726 `clearenv' which is used in POSIX.9 is also available.
1728 * New function `getsid' returns session ID number on systems that support it.
1730 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1731 files <db.h> and <mpool.h> provide a rich set of functions for several
1732 types of simple databases stored in memory and in files, and <ndbm.h> is
1733 an old `ndbm'-compatible interface using the `db' functions. Link with
1734 `-ldb' to get these functions.
1736 * New macro `strdupa' copies a string like `strdup', but uses local stack
1737 space from `alloca' instead of dynamic heap space from `malloc'.
1739 * New function `strnlen' is like `strlen' but searches only a given maximum
1740 number of characters for the null terminator. `stpncpy', `strndup' and
1741 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1744 * New function `statfs' in header <sys/statfs.h>.
1746 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1747 provide convenient functions for operating on blocks of null-terminated
1750 * A new suite of functions in <utmp.h> handle all the details of reading
1751 and writing the utmp file.
1753 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1756 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1757 completely POSIX compliant and also implemented the extended functionality
1758 to handle alternate digit representation and alternate era date formats.
1760 * Ulrich Drepper provided an implementation of the `strptime' function
1761 defined in XPG4.2 which transforms a string into a `struct tm' value.
1763 * Paul Eggert provided the tzselect shell script as part of the timezone
1764 code. The shell script makes it easy to select the correct timezone
1767 * The implementation of the malloc family of functions is completely replaced
1768 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1769 The implementation uses the mmap function (if available) and it is
1770 optimized for the use in multi threaded programs.
1772 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1773 functions. This new functionality is usable by specifying a special
1774 salt string and it is compatible with implementation on *BSD systems.
1776 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1777 `getsubopt' to handle second level command line options, `bsd_signal'
1778 to access BSD style `signal' functionality, the obsolete `regexp' style
1781 * the `lchown' function is available on system which support this
1784 * The implementation of the shadow password handling function was contributed
1787 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1789 * POSIX.1g support was added. The <sys/select.h> header is available,
1790 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1791 implementation of `getaddrinfo'.
1795 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1797 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1798 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1800 * The new function `daemon' from 4.4 BSD is useful for server programs that
1801 want to put themselves in the background.
1803 * Joel Sherrill has contributed support for several standalone boards that
1804 run without an operating system.
1806 * `printf', `scanf' and friends now accept a `q' type modifier for long
1807 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1809 * All of the code taken from BSD (notably most of the math and networking
1810 routines) has been updated from the BSD 4.4-Lite release.
1812 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1814 * The new functions `getdomainname' and `setdomainname' fetch or change the
1815 YP/NIS domain name. These are system calls which exist on systems which
1818 * The time zone data files have been updated for the latest international
1821 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1822 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1826 * The C library now includes support for Sun RPC, from Sun's free
1827 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1828 are included. (There is still no support for YP.)
1830 * Tom Quinn has contributed a port of the C library to SGI machines running
1831 Irix 4 (mips-sgi-irix4).
1833 * The new `lockf' function is a simplified interface to the locking
1834 facilities of `fcntl', included for compatibility.
1836 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1838 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1840 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1843 * The error message printed by `assert' for a failed assertion now includes
1844 the name of the program (if using GNU ld) and the name of the calling
1845 function (with versions of GCC that support this).
1847 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1849 * The library now includes the <sys/mman.h> header file and memory
1850 management functions `mmap', `munmap', `mprotect', `msync', and
1851 `madvise', on systems that support those facilities.
1853 * The interface for `mcheck' has changed slightly: the function called to
1854 abort the program when an allocation inconsistency is detected now takes
1855 an argument that indicates the type of failure. The new function
1856 `mprobe' lets you request a consistency check for a particular block at
1857 any time (checks are normally done only when you call `free' or `realloc'
1860 * It is now possible to easily cross-compile the C library, building on one
1861 system a library to run on another machine and/or operating system. All
1862 you need to do is set the variable `HOST_CC' in `configparms' to the
1863 native compiler for programs to run on the machine you are building on (a
1864 few generator programs are used on Unix systems); set `CC' to the
1867 * The new function `fexecve' (only implemented on the GNU system) executes
1868 a program file given a file descriptor already open on the file.
1872 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1873 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1875 * You can set the variable `libprefix' in `configparms' to specify a prefix
1876 to be prepended to installed library files; this makes it easy to install
1877 the GNU C library to be linked as `-lgnuc' or whatever.
1879 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1880 copies a limited number of characters from a string, and returns the
1881 address of the last character written.
1883 * You no longer need to check for whether the installed `stddef.h' is
1884 compatible with the GNU C library. configure now checks for you.
1886 * You can now define a per-stream `fileno' function to convert the
1887 stream's cookie into an integral file descriptor.
1889 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1890 allocates zero bytes of storage, and returns a unique pointer which
1891 you can pass to `realloc' or `free'. The behavior is undefined if
1892 you dereference this pointer.
1894 * The C library now runs on Sony NEWS m68k machines running either
1895 NewsOS 3 or NewsOS 4.
1897 * The new `syscall' function is a system-dependent primitive function
1898 for invoking system calls. It has the canonical behavior on Unix
1899 systems, including unreliable return values for some calls (such as
1900 `pipe', `fork' and `getppid').
1902 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1903 to `EAGAIN', which is the preferred name. On systems whose kernels
1904 use two distinct codes, the C library now translates EWOULDBLOCK to
1905 EAGAIN in every system call function.
1909 * The GNU C Library Reference Manual is now distributed with the library.
1910 `make dvi' will produce a DVI file of the printed manual.
1911 `make info' will produce Info files that you can read on line using C-h i
1912 in Emacs or the `info' program.
1913 Please send comments on the manual to bug-glibc-manual@gnu.org.
1915 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1917 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1919 * Jason Merrill has contributed a port to the Sequent Symmetry running
1920 Dynix version 3 (i386-sequent-dynix).
1922 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1923 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1925 * New function `memory_warnings' lets you arrange to get warnings when
1926 malloc is running out of memory to allocate, like Emacs gives you.
1928 * The C library now contains the relocating allocator used in Emacs 19 for
1929 its editing buffers. This allocator (ralloc) minimizes allocation
1930 overhead and fragmentation by moving allocated regions around whenever it
1931 needs to. You always refer to a ralloc'd region with a "handle" (a
1932 pointer to a pointer--an object of type `void **').
1934 * There is a new `printf' format: `%m' gives you the string corresponding
1935 to the error code in `errno'.
1937 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1938 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1939 pass, the `a' modifier says to fill in a `char **' you pass with a
1942 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1943 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1944 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1946 * `mkstemp' is a traditional Unix function to atomically create and open a
1947 uniquely-named temporary file.
1951 * The standard location for the file that says what the local timezone is
1952 has changed again. It is now `/usr/local/etc/localtime' (or more
1953 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1955 * The distribution no longer contains any files with names longer than 14
1958 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1959 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1961 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1965 * The configuration process has changed quite a bit. The `configure'
1966 script is now used just like the configuration scripts for other GNU
1967 packages. The `sysdeps' directory hierarchy is much rearranged.
1968 The file `INSTALL' explains the new scheme in detail.
1970 * The header files no longer need to be processed into ANSI C and
1971 traditional C versions. There is just one set of files to install, and
1972 it will work with ANSI or old C compilers (including `gcc -traditional').
1974 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1975 MIPS DECStation running Ultrix 4.
1977 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1978 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1979 made itself into a shared library.
1981 * Yet further improved support for the i386, running 4.3 BSD-like systems
1982 (such as Mach 3 with the Unix single-server), or System V.
1984 * New function `strncasecmp' to do case-insensitive string comparison
1985 with limited length.
1987 * New function `strsep' is a reentrant alternative to `strtok'.
1989 * New functions `scandir' and `alphasort' for searching directories.
1991 * New function `setenv' is a better interface to `putenv'.
1993 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1994 function for traversing a directory tree.
1996 * The GNU obstack package is now also part of the C library.
1997 The new function `open_obstack_stream' creates a stdio stream that
1998 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1999 formatted output directly to an obstack.
2001 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2002 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2004 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2006 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2007 things to your strings.
2009 * There are some new test programs: test-fseek, testmb, and testrand.
2011 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2012 These ports are not finished, but are a good starting place for really
2013 supporting those systems.
2015 * `/etc/localtime' is now the standard location for the file that says what
2016 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2017 This follows the general principle that `/etc' is the place for all local
2018 configuration files.
2020 * The C library header files now use `extern "C"' when used by the C++
2021 compiler, so the C library should now work with C++ code.
2023 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2024 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2027 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2028 function which uses the `merge sort' algorithm, and is said to be
2029 significantly faster than the old GNU `qsort' function. Merge sort is
2030 now the standard `qsort' function. The new algorithm can require a lot
2031 of temporary storage; so, the old sorting function is called when the
2032 required storage is not available.
2034 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2035 provides the Unix `crypt' function, plus some other entry points.
2037 * The code and header files taken from 4.4 BSD have been updated with the
2038 latest files released from Berkeley.
2040 ----------------------------------------------------------------------
2041 Copyright information:
2043 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2045 Permission is granted to anyone to make or distribute verbatim copies
2046 of this document as received, in any medium, provided that the
2047 copyright notice and this permission notice are preserved,
2048 thus giving the recipient permission to redistribute in turn.
2050 Permission is granted to distribute modified versions
2051 of this document, or of portions of it,
2052 under the above conditions, provided also that they
2053 carry prominent notices stating who last changed them.
2056 version-control: never
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