1 GNU C Library NEWS -- history of user-visible changes. 2011-7-19
2 Copyright (C) 1992-2009, 2010, 2011 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 9696, 12868, 12874, 12885, 12907, 12922, 12935
14 * New program pldd to list loaded object of a process
15 Implemented by Ulrich Drepper.
17 * Add nss_db support back to glibc. No more dependency on Berkeley db
18 and support for initgroups lookups.
19 Implemented by Ulrich Drepper.
21 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
24 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
27 * Improved strcat and strncat on x86-64.
28 Contributed by Liubov Dmitrieva.
32 * The following bugs are resolved with this release:
34 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
35 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
36 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
37 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
38 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
39 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
40 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
41 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
42 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
43 12795, 12811, 12813, 12814, 12841
45 * The RPC implementation in libc is obsoleted. Old programs keep working
46 but new programs cannot be linked with the routines in libc anymore.
47 Programs in need of RPC functionality must be linked against TI-RPC.
48 The TI-RPC implementation is IPv6 enabled and there are other benefits.
50 Visible changes of this change include (obviously) the inability to link
51 programs using RPC functions without referencing the TI-RPC library and the
52 removal of the RPC headers from the glibc headers.
53 Implemented by Ulrich Drepper.
55 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
56 syncfs, setns, sendmmsg
58 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
59 yue_HK, lij_IT, mhr_RU
61 * New encodings: CP770, CP771, CP772, CP773, CP774
63 * New program sotruss to trace calls through PLTs
64 Implemented by Ulrich Drepper.
66 * The malloc hook implementation is marked deprecated and will be removed
67 from the default implementation in the next version. The design never
68 worked ever since the introduction of threads. Even programs which do
69 not create threads themselves can use multiple threads created internally.
73 * The following bugs are resolved with this release:
75 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
76 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
77 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
78 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
81 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
83 * POWER7 optimizations: memset, memcmp, strncmp
85 * New optimized string functions for x86-64: strnlen (SSE2),
86 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
87 Implemented by Ulrich Drepper.
91 * The following bugs are resolved with this release:
93 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
94 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
95 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
96 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
97 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
98 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
99 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
100 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
102 * New interfaces: pthread_getname_np, pthread_setname_np
104 * New Linux interface: recvmmsg
106 * STT_GNU_IFUNC implemented for Sparc by David Miller.
108 * The dynamic linker now recognizes supported ABI versions from the
109 EI_ABIVERSION field in the ELF header.
110 Implemented by Ulrich Drepper.
112 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
113 will not be used to fill in password fields in the passwd.byname replies.
114 Instead it is used to synthesize the shadow.byname table, should it be
115 missing. This is a useful mode in some installations involving Solaris.
116 Implemented by Ulrich Drepper.
118 * New locales: kok_IN, sq_MK, cv_RU
122 * The following bugs are resolved with this release:
124 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
125 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
126 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
127 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
128 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
129 10789, 10817, 10823, 10840, 10847
131 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
133 Implemented by Ulrich Drepper.
135 * Checking version of longjmp added that fails if an uninitialized stack
136 frame would be created. Implemented by Ulrich Drepper.
138 * STT_GNU_IFUNC is now supported in static executables.
139 Implemented by H.J. Lu.
141 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
143 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
144 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
145 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
146 Contributed by H.J. Lu.
148 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
149 Implemented by Ulrich Drepper.
151 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
153 Contributed by H.J. Lu.
155 * Support for fma instruction in AVX on x86-64.
156 Implemented by H.J. Lu and Ulrich Drepper.
158 * AVX support in x86-64 auditing support in ld.so.
159 Implemented by H.J. Lu.
161 * STB_GNU_UNIQUE support added.
162 Implemented by Ulrich Drepper.
164 * Implement second fallback mode for optimized DNS lookup for even more
165 broken environments. If two requests from the same port are not
166 handled correctly close the socket and open a new one before sending
167 the second request. The 'single-request-reopen' option in /etc/resolv.conf
168 can be used to select this mode right away, instead of rediscovering the
169 necessity is every process again.
170 Implemented by Ulrich Drepper.
172 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
173 Implemented by Adam Tkac.
175 * Optimized iconv conversions for S390x.
176 Implemented by Andreas Krebbel.
178 * Using condvars with PI mutexes is now more efficient due to kernel
179 support for requeueing to PI futexes. NPTL support added for x86-64.
180 Implemented by Ulrich Drepper.
182 * New locales: ps_AF, my_MM
186 * The following bugs are resolved with this release:
188 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
189 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
190 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
191 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
192 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
194 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
195 Implemented by Ulrich Drepper.
197 * New Linux interfaces: accept4, fallocate, fallocate64.
198 Implemented by Ulrich Drepper.
200 * Correct declarations of string function when used in C++ code. This
201 could lead to compile errors for invalid C++ code.
203 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
206 * New POSIX 2008 interface: psiginfo
207 Implemented by Ulrich Drepper.
209 * New ISO C++1x interfaces: quick_exit, at_quick_exit
210 Implemented by Ulrich Drepper.
212 * Support for selecting between multiple function definitions at runtime
213 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
215 * The libcrypt library can now use the hash function implementations in
216 NSS. Implemented by Ulrich Drepper.
218 * The malloc implementation can be compiled to be less memory efficient
219 but higher performing in multi-threaded programs.
220 Implemented by Ulrich Drepper.
222 * New locales: nan_TW@latin, ks_IN
224 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
225 Implemented by Ulrich Drepper.
227 * Extended printf hook support. It is possible to use user-defined types
228 and extend existing format specifiers.
229 Implemented by Ulrich Drepper.
231 * Handling for group shadow files has been added.
232 Implemented by Ulrich Drepper.
234 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
235 servers (the case, e.g., for some people using the built-in DNS
236 server in ADSL modems/routers). There is a once-per-process timeout
237 in case of a broken server. To avoid it, users can run nscd or put
238 'options single-request' in /etc/resolv.conf.
239 Implemented by Ulrich Drepper.
243 * The following bugs are resolved with this release:
245 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
246 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
247 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
248 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
249 6968, 6974, 6980, 6995, 7008, 7009, 7029
251 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
252 up at the same time. Implemented by Ulrich Drepper.
254 * TLS descriptors for LD and GD on x86 and x86-64.
255 Implemented by Alexandre Oliva.
257 * getaddrinfo now handles DCCP and UDPlite.
258 Implemented by Ulrich Drepper.
260 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
261 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
262 Implemented by Ulrich Drepper.
264 * New implementation of memmem, strstr, and strcasestr which is O(n).
265 Implemented by Eric Blake.
267 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
269 * Implement "e" option for popen to open file descriptor with the
270 close-on-exec flag set. Implemented by Ulrich Drepper.
272 * Implement "b" mode for fmemopen. In this mode writes writes don't
273 implicitly add a NUL byte and seeks from the end of the buffer really
274 use the buffer end, not the string length as the basis.
275 Implemented by Ulrich Drepper.
277 * Many functions, exported and internal, now atomically set the close-on-exec
278 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
280 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
282 Implemented by Pravin Satpute.
284 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
288 * The following bugs are resolved with this release:
290 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
291 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
292 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
293 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
294 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
295 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
296 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
298 * New locales: bo_CN, bo_IN, shs_CA.
300 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
302 * Sorting rules for some Indian languages (Devanagari and Gujarati).
303 Implemented by Pravin Satpute.
305 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
307 * nscd caches now all timeouts for DNS entries
308 Implemented by Ulrich Drepper.
310 * nscd is more efficient and wakes up less often.
311 Implemented by Ulrich Drepper.
313 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
314 vdprintf, and obstack_vprintf.
315 Implemented by Jakub Jelinek.
317 * Faster memset for x86-64.
318 Implemented by Harsha Jagasia and H.J. Lu.
320 * Faster memcpy on x86.
321 Implemented by Ulrich Drepper.
323 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
324 Implemented by Ulrich Drepper.
326 * Faster sqrt and sqrtf implemention for some PPC variants.
327 Implemented by Stephen Munroe.
331 * The following bugs are resolved with this release:
333 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
334 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
335 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
336 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
337 5071, 5103, 5104, 5112, 5113, 5184, 5186
339 * More checking functions: fread, fread_unlocked, open*, mq_open.
340 Implemented by Jakub Jelinek and Ulrich Drepper.
342 * Extend fortification to C++. Implemented by Jakub Jelinek.
344 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
345 by not recognizing 'a' as a modifier when those specs are requested.
346 Implemented by Jakub Jelinek.
348 * PPC optimizations to math and string functions.
349 Implemented by Steven Munroe.
351 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
352 options to be passed. Implemented by Ulrich Drepper.
354 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
356 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
357 Implemented by Ulrich Drepper.
359 * Handle private futexes in the NPTL implementation.
360 Implemented by Jakub Jelinek and Ulrich Drepper.
362 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
363 Implemented by Roland McGrath and Ulrich Drepper.
365 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
367 * SHA-256 and SHA-512 based password encryption.
368 Implemented by Ulrich Drepper.
370 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
371 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
374 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
375 Implemented by Ulrich Drepper.
379 * The following bugs are resolved with this release:
381 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
382 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
383 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
384 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
385 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
386 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
387 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
390 * New Linux interfaces: epoll_pwait, sched_getcpu.
392 * New generic interfaces: strerror_l.
394 * nscd can now cache the services database. Implemented by Ulrich Drepper.
398 * The following bugs are resolved with this release:
400 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
401 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
402 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
403 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
404 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
405 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
406 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
407 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
408 3225, 3251, 3252, 3253, 3273
410 * For Linux, the sorting of addresses returned by getaddrinfo now also
411 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
412 Implemented by Ulrich Drepper.
414 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
415 Implemented by Ulrich Drepper.
417 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
419 * New iconv module for MIK. Contributed by Alexander Shopov.
421 * For sites with broken group and/or passwd database, the auto-propagate
422 option of nscd can prevent creating ID lookup entries from the results
423 of a name lookup and vice versa. This usually is no problem but some
424 site might have problems with the default behavior.
425 Implemented by Ulrich Drepper.
427 * Iterating over entire database in NIS can be slow. With the
428 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
429 to trade time for memory. The entire database will be read at once.
430 Implemented by Ulrich Drepper.
432 * The interfaces introduced in RFC 3542 have been implemented by
435 * Support for the new ELF hash table format was added by Ulrich Drepper.
437 * Support for priority inheritance mutexes added by Jakub Jelinek and
440 * Support for priority protected mutexes added by Jakub Jelinek.
442 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
443 or_IN, csb_PL, fy_NL, sr_ME.
447 * More overflow detection functions.
449 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
450 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
452 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
453 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
454 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
455 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
456 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
457 by Masahide Washizawa.
459 * It is now possible to install audit libraries for the dynamic linker using
460 LD_AUDIT. Implemented by Ulrich Drepper.
462 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
463 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
464 For a libc and libpthread that works well on Linux 2.4 kernels, we
465 recommend using the stable 2.3 branch.
467 * The new function open_wmemstream acts like open_memstream,
468 but uses a wchar_t wide character buffer.
470 * The new function ppoll is an improved version of poll, similar to pselect.
472 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
473 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
474 renameat, unlinkat, linkat, symlinkat, readlinkat.
476 * New Linux kernel system calls: unshare,
477 inotify_init, inotify_add_watch, inotify_rm_watch.
479 * The euidaccess function is now also known by the alias eaccess,
480 for compatibility with some other systems.
482 * Timezone data updated to 2006b version.
486 * The following bugs are resolved with this release:
488 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
489 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
490 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
491 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
492 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
493 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
495 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
497 * As of this release, GCC 4 can be used to compile the C Library.
499 * Timezone data updated to 2005m version.
503 * The following bugs are resolved with this release:
505 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
506 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
507 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
508 777, 787, 821, 822, 823, 825
510 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
514 * Support for RFC 3678. Real implementations exist only for Linux so far.
515 Implemented by Ulrich Drepper.
517 * nscd can now cache entries persistently. Expiring entries are reloaded.
518 For speedups the cache can be shared in memory with client processes.
519 Implemented by Ulrich Drepper.
521 * nscd can now perform SELinux checks.
522 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
524 * getaddrinfo queries are now cached. Canonical name lookup is performed
526 Implemented by Ulrich Drepper.
528 * The nothrow function attribute is used when headers are used by gcc when
529 compiling C code. This can avoid significant amounts of exception
532 * The malloc functions perform more error checking and are stricter when
533 it comes to reacting on errors. The default action is to terminate
534 the process after showing an error message. Implemented by Ulrich Drepper.
536 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
537 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
539 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
540 namespaces using the new function dlmopen(). This feature is of course,
541 like most other dynamic loading functionality, not available in statically
542 linked applications. Implemented by Ulrich Drepper.
544 * Low-overhead boundary checking variants of string and some stdio functions
545 were added. These are to be used in conjunction with a gcc patch by
546 Jakub Jelinek which adds calls to these functions if possible.
547 Implemented by Jakub Jelinek and Ulrich Drepper.
549 * Old code for several operating systems and machine architectures that
550 have not been in working condition in a long time have been removed from
551 the main source tree maintained by the GNU C Library's maintainers.
552 These files are now reside in the separate `ports' source module
553 that is usable as an add-on when building the library.
557 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
558 interrogate the dynamic linker, compatible with the Solaris interface.
560 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
561 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
563 * getifaddrs now uses the netlink interface on Linux to get its information.
564 Implemented by Thorsten Kukuk.
566 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
567 Implemented by Ulrich Drepper.
569 * support for non-executable stacks on x86 has been added. Changes mostly
572 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
575 * getaddrinfo now performs destination address selection according to
580 * Thread-safe interfaces for many functions that access locale data
581 were added in version 2.3, but these features were omitted from NEWS.
582 Many functions have variants with an `_l' suffix that take a `locale_t'
583 object as a parameter rather than consulting the current locale.
584 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
585 create and maintain `locale_t' objects. Additionally, the new function
586 `uselocale' sets "the current locale" (as used by functions not so
587 parameterized) set for an individual thread. These features were added
588 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
590 * The functions getresuid, getresgid, setresuid, and setresgid, which
591 have long been available on Linux, are now declared in <unistd.h>
592 and are now also available on the Hurd.
594 * ELF thread-local storage support (TLS) now works on x86-64.
596 * The new dynamic string token $LIB is expanded in shared library names.
597 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
599 * Aldy Hernandez contributed complete software floating point support for
600 PowerPC machines with no FPU.
602 * fexecve is implemented on Linux.
604 * The `btowc' function should work at least twice as fast due to
605 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
607 * With approriate thread add-ons cancelable functions are now implemented
608 in libc.so as well. No need to call the function in libpthread. This
609 change allowed to finally disable the incorrect and expensive handling
610 of weak definition in ld.so.
612 * Yet more PLT entries in libc.so have been removed. We finally arrived
613 at the bare minimum. Startup times improved appropriately.
615 * Support for the new Linux/x86 system call interface was added. The
616 AT_SYSINFO auxiliary vector entry is recognized and handled.
620 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
623 * iconv (the program and the interface) now accepts empty names (excluding
624 options like //TRANSLIT) to mean "use charset of current locale".
626 * localedef can now transliterate characters in strings which are not in
627 the provided charmap. The information from the input locale is used.
629 * Prelinking support was added for ELF targets. This requires additional
630 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
632 * Read-only stdio streams now use mmap to speed up operation by eliminating
633 copying and buffer underflows. To use add 'm' to the mode string of
634 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
636 * The malloc functions were completely rewritten by Wolfram Gloger based
637 on Doug Lea's malloc-2.7.0.c.
639 * Isamu Hasegawa contributed a completely new and POSIX-conformant
640 implementation of regex.
642 * Bruno Haible upgraded the iconv and locale implementation to support
645 * Contents of the LC_* and LANG environment variables in the CEN style are
646 not recognized anymore. It never was used. Change by Ulrich Drepper.
648 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
649 thread-local storage (TLS) ABI on some platforms.
650 Changes by Ulrich Drepper. SH support by Kaz Kojima.
652 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
653 EUC-JISX0213, and TSCII.
655 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
656 BSD-compatible interface for getting all network interface addresses.
657 Implementation for IPv4 by Roland McGrath.
659 * Loading of locale data is faster due to the introduction of a locale
660 archive. Implemented by Roland McGrath and Ulrich Drepper.
662 * Startup times are significantly reduced by not using exported functions
663 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
666 * Steven Munroe contributed a port to PowerPC64/Linux.
670 * The Hurd now uses the GNU libio implementation of stdio rather than the
671 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
673 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
674 with the same behavior as the Linux system call of the same name.
678 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
679 128-bit long double format.
681 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
682 IBM1161, and IBM1162 charsets.
684 * Andreas Jaeger contributed a port to x86-64/Linux.
686 * Peter Bruin contributed a port to PowerPC/Hurd.
688 * libc functions using I/O streams now can handle wide-oriented streams
691 * optimizations in the dynamic linker. Binaries created by recent binutils
692 versions start up quicker due to reduced time spent on relocations.
694 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
698 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
699 asinh, atanh, j0 for the 128-bit long double format.
701 * Bruno Haible updated all the code handling Unicode in some form to
704 * Speed of regex for single-byte locales is back to previous levels.
705 Patch by Isamu Hasegawa.
707 * Alpha, SPARC, and IA-64 now also using floating stacks.
709 * Startup time of internationalized applications greatly improved through
710 iconv cache. Use iconvconfig to generate the cache file.
711 Contributed by Ulrich Drepper.
713 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
714 severe performance problems. Patch by David Mosberger.
716 * The Hurd port got a lot more functionality like AIO, various stdio
717 extensions, etc. Mainly done by Roland McGrath.
719 * mtrace can now lookup symbols in shared libraries.
723 * Intel's IA-64 math library is largely integrated. It provides fast and
724 accurate implementatations for most basic and standard math functions
725 in float, double, and long double format.
727 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
728 and asin for the 96-bit long double format and asin, log, tan for the
729 128-bit long double format.
731 * The beginning of a last-bit accurate math library by IBM Haifa were added.
732 The basic double functions exist today. Contributed by Abraham Ziv
733 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
734 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
736 * An asynchronous name lookup library was added. The interface is designed
737 after POSIX AIO. The proposal was circulated beforehand to get comments.
738 No negative ones came in. Implemented by Ulrich Drepper.
740 * Port to S390/64bit contributed by Martin Schwidefsky
741 <schwidefsky@de.ibm.com>.
743 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
744 of functions for Linux/IA-64.
746 * The RPC code is now thread safe. Threads can now use the same service
747 of different services at the same time. Patch by Eric Norum
748 <eric.norum@usask.ca> with some help by Ulrich Drepper.
750 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
751 family of functions for Linux/S390.
753 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
754 of functions for Linux/x86.
756 * Port to Linux/CRIS contributed by Axis Communications.
760 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
761 we can now check for namespace violations and missing declarations. The
762 result is that almost all headers are now Unix-compliant (as defined in
763 the upcoming XPG6). The negative side is that some programs might need
764 corrections, too, if they depend on the incorrect form of the headers in
765 previous versions which defined too many symbols and included too many
768 * regex now handles multibyte character sets correctly.
769 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
771 * iconv (the program) does now conform to the upcoming XPG6 and handles
772 charmaps. Instead of the charset names the path of charmaps can be
773 provided and the conversion happens based on this data.
774 Contributed by Ulrich Drepper.
776 * The locale program now provides detailed information about the installed
781 only lists the names of the supported locales
785 provides details such as country, language, and codeset name.
786 Contributed by Ulrich Drepper.
790 * The gencat program now parses the input file according to the charset
791 selected by the LC_CTYPE category. This is important for stateful
792 character sets. To make generating catalogs easier there is a way
793 to overwrite the charset selected by the locale: before the first
794 message or $ quote line the catalog can contain a line like
798 to select the charset (ISO-8859-2 in this case).
800 Implemented by Shinya Hanataka and Ulrich Drepper.
802 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
803 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
804 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
806 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
807 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
809 * The LANGUAGE environment variable is now ignored unless the locale is
810 changed from the default "C" locale.
812 * The usual bug fixes.
816 * Greg McGary added runtime support for bounds checking using gcc's
817 new -fbounded-pointers option. ix86 target is complete. PowerPC
820 * Thorsten Kukuk added secure mode support to nscd.
822 * The Berkeley db libraries have been removed.
824 Related, the nss_db module is now in a separate package since it
825 obviously requires a database library being available.
827 * Wide character I/O streams implemented by Ulrich Drepper.
829 * Functions from the extended socket API added by Ulrich Drepper.
831 * Functions feenableexcept and fedisableexcept to control the
832 behaviour of individual exceptions have been added by Andreas Jaeger.
834 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
836 * The resolver code has been updated from bind 8.2.3-T5B which supports
837 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
840 This change could in some situations effect backward compatibility. Since
841 now `_res' is a thread-local instead of a global variable, modifying it
842 in one thread does not have any effect in other threads.
844 The resolver library was also extended to allow IPv6 as the transport
845 protocol for the requests. This work was done by Stig Venaas.
847 * Compatibility code for K&R C compilers has been removed from the
848 header files. A ISO C compiler is needed to use the library
849 (conforming to either C89 or C99 standard).
851 * Complete rewrite of the localedef program to support multibyte character
852 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
853 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
854 Implemented by Ulrich Drepper.
856 Bruno Haible significantly improved the generation and use of the data
857 structures for the wide character tables.
859 * Plural handling in gettext implemented by Ulrich Drepper.
861 * The utmp daemon has been removed.
863 * The port to MIPS-Linux has been finished by Andreas Jaeger.
865 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
868 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
870 * POSIX barriers implemented by Kaz Kylheku.
872 * POSIX spawn function family implemented by Ulrich Drepper.
874 * POSIX spinlocks are now available.
876 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
878 * the configure option --enable-kernel=X.Y.Z allows to strip out
879 compatibility for kernel versions before X.Y.Z. This is currently only
880 implemented for Linux.
882 * the sockaddr_in6 structure changed. The IPv6 working group added a new
883 field sin6_scope_id. This means that all programs using IPv6 should be
884 recompiled. Don't expect binary compatibility with previous glibc
887 * various conversion modules for IBM character sets contributed by
890 * IA-64 port by Jes Sorensen and HJ Lu.
892 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
893 Compiling the GNU C Library for Linux/ia64
894 ******************************************
896 Please refer to the file INSTALL in the same directory as you found
897 this file for general information about configuring and compiling
900 For general inquiries about glibc under Linux/ia64 please use the
901 following mailing list linux-ia64@linuxia64.org or one of the relevant
904 Recommended Tools for Compilation
905 =================================
907 In order for glibc-2.2 to build correctly on the ia64 you need at
908 least the following versions of the GNU tools (the :
910 * The Cygnus toolchain snapshot for the ia64 as of August 4
911 including the provided set of patches. It is however recommend
912 you use the October 24 toolchain snapshot or a more recent version.
914 OR alternatively you can try the following (the Cygnus toolchain is
915 the recommended solution):
917 * GCC and binutils, GAS and GNU LD out of CVS from
918 sources.redhat.com as of August 28, 2000 or later. The CVS tree
919 may require special patches to work properly on the ia64.
921 Configuring and compiling GNU Libc for Linux/ia64
922 =================================================
924 The library requires Linux kernel version 2.4.0-test4-000728 or
925 later to funtion properly. Besides that it support for debug libraries
926 is currently untested. Hence the following options
927 are required for configuring the library:
929 --disable-debug --enable-kernel=2.4.0
931 It is also important that you make sure the library picks up the
932 appropriate kernel header files, if you do not have recent enough
933 kernel headers in /usr/src/linux/include, you should use the
934 --with-headers=<path> option to specify the location.
936 As an example I personally use the following options to configure
941 --enable-kernel=2.4.0
945 --with-headers=/home/jes/linux/include
950 Jes Sorensen <jes@linuxcare.com>,
952 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
966 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
968 * New xdr functions are added; some rpc functions are now 64bit clean.
970 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
972 * Fixed known incompatibilities with glibc 2.0.
974 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
976 * Optimized a number of functions (especially the ELF dynamic loader).
978 * Update timezone data files.
980 * lots of charmaps corrections
982 * some new locale definitions and charmaps
987 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
988 conform to POSIX member type requirements. Symbol versions have been
989 adjusted as needed within the library, and for direct use by applications,
990 but there is potential for problems if third-party libraries use
991 struct timeval as part of their interface. This does not present
992 a problem for X and other "essential" system libraries.
994 * An additional locale model to support C++ Standard Library locale
995 model and probably more was implemented by Ulrich Drepper.
997 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1000 * Miles Bader provided the `argp' function family to support hierachical
1001 command line argument parsing, layered on top of getopt.
1003 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1005 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1008 * scanf recognizes the %a and %A format for scanning floating point numbers.
1010 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1011 information and interfaces for the available integer types.
1013 * about 130 new math functions were added to implement the ISO C9x math
1016 * the new header <complex.h> contains definitions of the complex math
1017 functions from ISO C 9X.
1019 * the new header <tgmath.h> defines generic macros to use complex or
1020 real valued functions.
1022 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1024 * Andreas Jaeger provided a test suite for the math library.
1026 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1028 * Ulrich Drepper added character set conversion functions (iconv).
1030 * Optimized string functions have been added.
1032 * The localedata addon is now part of glibc.
1034 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1036 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1037 daemon for NSS (nscd).
1039 Missing a better place here are some numbers on improvements. Under
1040 Linux 2.1.125 un-tar-ing the kernel sources takes
1044 using local files 12.19s 6.88s 22.91s
1046 using NIS 13.92s 8.91s 26.34s
1048 using NIS & nscd 10.37s 7.34s 25.30s
1050 using NIS+ 27.57s 30.37s 640.46s
1052 using NIS+ & nscd 10.25s 7.83s 26.51s
1054 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1056 Keep in mind that non-namelookup related operations dominate above times.
1057 It was just a common complain that using NIS+ unpacking the kernel is
1060 [1] The old nscd implementation is not available anymore since it was
1061 distributed with glibc up to version 2.0.98 and thus is now replaced.
1063 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1065 * Mark Kettenis provided a Hesiod NSS module.
1067 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1068 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1070 * rcmd can now handle netgroups (Dick Streefland).
1072 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1075 * Support for the IPv6 protocol has been added to the socket API, as per the
1076 latest draft standards.
1078 * Support for Linux 2.2 has been added.
1080 * Interface changes relative to the latest 2.0.x release:
1081 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1082 addseverity NEW: Unix98
1083 alphasort64 NEW: LFS
1084 argp_err_exit_status NEW: argp, GNU ext
1085 argp_error NEW: argp, GNU ext
1086 argp_failure NEW: argp, GNU ext
1087 argp_help NEW: argp, GNU ext
1088 argp_parse NEW: argp, GNU ext
1089 argp_program_bug_address NEW: argp, GNU ext
1090 argp_program_version NEW: argp, GNU ext
1091 argp_program_version_hook NEW: argp, GNU ext
1092 argp_state_help NEW: argp, GNU ext
1093 argp_usage NEW: argp, GNU ext
1094 authdes_create NEW: Secure RPC
1095 authdes_getucred NEW: Secure RPC
1096 authdes_pk_create NEW: Secure RPC
1097 backtrace NEW: GNU ext.
1098 backtrace_symbols NEW: GNU ext.
1099 backtrace_symbols_fd NEW: GNU ext.
1101 cacosf NEW: ISO C 9x
1102 cacosh NEW: ISO C 9x
1103 cacoshf NEW: ISO C 9x
1104 cacoshl NEW: ISO C 9x
1105 cacosl NEW: ISO C 9x
1112 casinf NEW: ISO C 9x
1113 casinh NEW: ISO C 9x
1114 casinhf NEW: ISO C 9x
1115 casinhl NEW: ISO C 9x
1116 casinl NEW: ISO C 9x
1118 catanf NEW: ISO C 9x
1119 catanh NEW: ISO C 9x
1120 catanhf NEW: ISO C 9x
1121 catanhl NEW: ISO C 9x
1122 catanl NEW: ISO C 9x
1123 cbc_crypt NEW: Secure RPC
1127 ccoshf NEW: ISO C 9x
1128 ccoshl NEW: ISO C 9x
1134 cimagf NEW: ISO C 9x
1135 cimagl NEW: ISO C 9x
1136 clearerr_locked REMOVED
1137 clntunix_create NEW: sunrpc ext
1139 clog10 NEW: ISO C 9x
1140 clog10f NEW: ISO C 9x
1141 clog10l NEW: ISO C 9x
1151 cprojf NEW: ISO C 9x
1152 cprojl NEW: ISO C 9x
1154 crealf NEW: ISO C 9x
1155 creall NEW: ISO C 9x
1160 csinhf NEW: ISO C 9x
1161 csinhl NEW: ISO C 9x
1164 csqrtf NEW: ISO C 9x
1165 csqrtl NEW: ISO C 9x
1169 ctanhf NEW: ISO C 9x
1170 ctanhl NEW: ISO C 9x
1172 des_setparity NEW: Secure RPC
1173 ecb_crypt NEW: Secure RPC
1174 endutxent NEW: Unix98
1176 exp10f NEW: ISO C 9x
1177 exp10l NEW: ISO C 9x
1181 fattach NEW: STREAMS
1182 fdetach NEW: STREAMS
1186 feclearexcept NEW: ISO C 9x
1187 fegetenv NEW: ISO C 9x
1188 fegetexceptflag NEW: ISO C 9x
1189 fegetround NEW: ISO C 9x
1190 feholdexcept NEW: ISO C 9x
1192 feraiseexcept NEW: ISO C 9x
1193 ferror_locked REMOVED
1194 fesetenv NEW: ISO C 9x
1195 fesetexceptflag NEW: ISO C 9x
1196 fesetround NEW: ISO C 9x
1197 fetestexcept NEW: ISO C 9x
1198 feupdateenv NEW: ISO C 9x
1199 fflush_locked REMOVED
1203 fgets_unlocked NEW: GNU ext.
1204 fileno_locked REMOVED
1216 fputc_locked REMOVED
1217 fputs_unlocked NEW: GNU ext.
1218 fread_unlocked NEW: GNU ext.
1223 fstatvfs NEW: Unix98
1227 ftruncate64 NEW: LFS
1229 fwrite_unlocked NEW: GNU ext.
1230 gai_strerror NEW: IPv6
1234 getchar_locked REMOVED
1236 getdate_err NEW: Unix98
1237 getdate_r NEW: GNU ext.
1239 getnameinfo NEW: IPv6
1240 getnetname NEW: Secure RPC
1241 getpmsg NEW: STREAMS
1242 getpt NEW: Unix98 PTY
1243 getrlimit64 NEW: LFS
1244 getutxent NEW: Unix98
1245 getutxid NEW: Unix98
1246 getutxline NEW: Unix98
1247 glob64 NEW: GNU ext.
1248 globfree64 NEW: GNU ext.
1249 gnu_get_libc_release NEW: GNU ext.
1250 gnu_get_libc_version NEW: GNU ext.
1251 grantpt NEW: Unix98 PTY
1252 host2netname NEW: Secure RPC
1254 iconv_close NEW: iconv
1255 iconv_open NEW: iconv
1256 if_freenameindex NEW: IPv6
1257 if_indextoname NEW: IPv6
1258 if_nameindex NEW: IPv6
1259 if_nametoindex NEW: IPv6
1260 in6addr_any NEW: IPv6
1261 in6addr_loopback NEW: IPv6
1262 inet6_isipv4mapped NEW: IPv6
1263 isastream NEW: STREAMS
1264 iswblank NEW: GNU ext.
1265 key_decryptsession NEW: Secure RPC
1266 key_decryptsession_pk NEW: Secure RPC
1267 key_encryptsession NEW: Secure RPC
1268 key_encryptsession_pk NEW: Secure RPC
1269 key_gendes NEW: Secure RPC
1270 key_get_conv NEW: Secure RPC
1271 key_secretkey_is_set NEW: Secure RPC
1272 key_setnet NEW: Secure RPC
1273 key_setsecret NEW: Secure RPC
1274 llrint NEW: ISO C 9x
1275 llrintf NEW: ISO C 9x
1276 llrintl NEW: ISO C 9x
1277 llround NEW: ISO C 9x
1278 llroundf NEW: ISO C 9x
1279 llroundl NEW: ISO C 9x
1284 lrintf NEW: ISO C 9x
1285 lrintl NEW: ISO C 9x
1286 lround NEW: ISO C 9x
1287 lroundf NEW: ISO C 9x
1288 lroundl NEW: ISO C 9x
1290 makecontext NEW: Unix98
1291 mempcpy NEW: GNU ext.
1294 modify_ldt NEW: kernel
1298 nearbyint NEW: ISO C 9x
1299 nearbyintf NEW: ISO C 9x
1300 nearbyintl NEW: ISO C 9x
1301 netname2host NEW: Secure RPC
1302 netname2user NEW: Secure RPC
1303 nexttoward NEW: ISO C 9x
1304 nexttowardf NEW: ISO C 9x
1305 nexttowardl NEW: ISO C 9x
1309 passwd2des NEW: Secure RPC
1311 pow10f NEW: GNU ext.
1312 pow10l NEW: GNU ext.
1315 printf_size NEW: GNU ext.
1316 printf_size_info NEW: GNU ext.
1317 profil_counter REMOVED
1318 pthread_mutexattr_getkind_np REPLACED
1319 pthread_mutexattr_setkind_np REPLACED
1320 ptsname NEW: Unix98 PTY
1321 ptsname_r NEW: Unix98 PTY
1323 putchar_locked REMOVED
1324 putgrent NEW: GNU ext.
1326 putpmsg NEW: STREAMS
1327 pututxline NEW: Unix98
1331 readdir64_r NEW: LFS
1332 remquo NEW: ISO C 9x
1333 remquof NEW: ISO C 9x
1334 remquol NEW: ISO C 9x
1336 roundf NEW: ISO C 9x
1337 roundl NEW: ISO C 9x
1339 scalbln NEW: ISO C 9x
1340 scalblnf NEW: ISO C 9x
1341 scalblnl NEW: ISO C 9x
1343 sendfile NEW: kernel
1344 setcontext NEW: Unix98
1345 setrlimit64 NEW: LFS
1346 setutxent NEW: Unix98
1348 sigignore NEW: Unix98
1349 sigqueue NEW: POSIX.1b
1350 sigrelse NEW: Unix98
1351 sigset NEW: POSIX.1b
1352 sigtimedwait NEW: POSIX.1b
1353 sigwaitinfo NEW: POSIX.1b
1354 sincos NEW: GNU ext.
1355 sincosf NEW: GNU ext.
1356 sincosl NEW: GNU ext.
1360 strcasestr NEW: GNU ext.
1361 strtoimax NEW: ISO C 9x
1362 strtoumax NEW: ISO C 9x
1363 strverscmp NEW: GNU ext.
1364 svcauthdes_stats NEW: Secure RPC
1365 svcunix_create NEW: sunrpc etx
1366 svcunixfd_create NEW: sunrpc ext
1367 swapcontext NEW: Unix98
1368 tcgetsid NEW: Unix98 PTY
1369 tdestroy NEW: GNU ext.
1370 tgamma NEW: ISO C 9x
1371 tgammaf NEW: ISO C 9x
1372 tgammal NEW: ISO C 9x
1376 truncf NEW: ISO C 9x
1377 truncl NEW: ISO C 9x
1379 unlockpt NEW: Unix98 PTY
1380 updwtmpx NEW: Unix98
1381 user2netname NEW: Secure RPC
1382 utmpxname NEW: Unix98
1383 versionsort NEW: GNU ext.
1384 versionsort64 NEW: GNU ext.
1386 wcscasecmp NEW: GNU ext.
1387 wcsncasecmp NEW: GNU ext.
1388 wcsnlen NEW: GNU ext.
1389 wcstoimax NEW: ISO C 9x
1390 wcstoll NEW: ISO C 9x
1391 wcstoull NEW: ISO C 9x
1392 wcstoumax NEW: ISO C 9x
1394 wordexp NEW: POSIX.2
1395 wordfree NEW: POSIX.2
1396 write_profiling REMOVED
1397 xdecrypt NEW: Secure RPC
1398 xdr_authdes_cred NEW: Secure RPC
1399 xdr_authdes_verf NEW: Secure RPC
1400 xdr_cryptkeyarg NEW: Secure RPC
1401 xdr_cryptkeyarg2 NEW: Secure RPC
1402 xdr_cryptkeyres NEW: Secure RPC
1403 xdr_getcredres NEW: Secure RPC
1404 xdr_key_netstarg NEW: Secure RPC
1405 xdr_key_netstres NEW: Secure RPC
1406 xdr_keybuf NEW: Secure RPC
1407 xdr_keystatus NEW: Secure RPC
1408 xdr_netnamestr NEW: Secure RPC
1409 xdr_sizeof NEW: Secure RPC
1410 xdr_unixcred NEW: sunrpc ext
1411 xencrypt NEW: Secure RPC
1412 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1423 * inet_ntoa is thread-safe
1425 * updwtmp is moved from libutil to libc
1427 * rewrite of cbrt function
1429 * update of timezone data
1443 * add atoll function
1445 * fix complex problems in Berkeley DB code
1447 * fix math functions
1451 * fixed lots of header problems (especially Linux/GNU specific)
1453 * dynamic loader preserves all registers
1455 * Roland McGrath provided support for handling of auxiliary objects in
1456 the ELF dynamic loader.
1458 * support for parallel builds is improved
1462 * GNU extensions are no longer declared by default. To enable them you
1463 must define the macro `_GNU_SOURCE' in your program or compile with
1466 * The library has changed from using GNU ld symbol aliases to using weak
1467 symbols where available. The ELF object file format supports weak
1468 symbols; GNU ld also supports weak symbols in the a.out format. (There
1469 is also now support for other GNU ld extensions in ELF. Use the
1470 `--with-elf' option to configure to indicate you have ELF, and
1471 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1472 of many files which contained only symbol aliases, reducing the size of
1473 the source and the compiled library; many other files were renamed to
1474 less cryptic names previously occupied by the symbol alias files.
1475 There is a new header file <elf.h> for programs which operate on
1476 files in the ELF format.
1478 * Converted to Autoconf version 2, so `configure' has more options.
1479 Run `configure --help' to see the details.
1481 * The library can now be configured to build profiling, highly-optimized
1482 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1483 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1484 `configure' enable building these extra libraries. The shared library is
1485 built by default when using both ELF and GNU ld. When shared libraries
1486 are enabled, the new library `-ldl' is available for arbitrary run-time
1487 loading of shared objects; its interface is defined in <dlfcn.h>. The
1488 new header file <link.h> gives access to the internals of the run-time
1489 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1490 application of same name on other systems and it provides information
1491 about dynamically linked binaries.
1493 * The C library now provides the run-time support code for profiling
1494 executables compiled with `-pg'. Programs can control the profiling code
1495 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1496 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1497 the support for this file format was contributed by David Mosberger-Tang.
1499 * The math code has been replaced with a math library based on fdlibm from
1500 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1501 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1502 functions. The math functions now reside in a separate library, so
1503 programs using them will need to use `-lm' their linking commands.
1505 * John C. Bowman contributed optimized ix87 assembler inline functions.
1507 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1508 mechanism similar to that found in Solaris 2. This is now used for the
1509 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1510 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1511 file controls what services are used for each individual database. This
1512 works by loading shared libraries with names specified in `nsswitch.conf',
1513 so service modules can be changed or added at any time without even
1514 relinking any program. Currently there are the file, db, and NIS based
1515 NSS services available.
1517 * The new functions `strtoq' and `strtouq' parse integer values from
1518 strings, like `strtol' and `strtoul', but they return `long long int' and
1519 `unsigned long long int' values, respectively (64-bit quantities).
1521 * The new functions `strtof' and `strtold' parse floating-point values from
1522 strings, like `strtod', but they return `float' and `long double' values,
1523 respectively (on some machines `double' and `long double' are the same).
1525 * Ulrich Drepper has contributed new implementations of the floating-point
1526 printing and reading code used in the `printf' family of functions and
1527 `strtod', `strtof', and `strtold'. These new functions are perfectly
1528 accurate, and much faster than the old ones.
1530 * The implementation of the POSIX locale model was completely rewritten by
1531 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1532 to compile the POSIX locale definition.
1534 * The former dummy implementations of the strcoll and strxfrm function are
1535 now replaced by fully functional code contributed by Ulrich Drepper. The
1536 collation information comes from the POSIX locale definitions.
1538 * The new header <langinfo.h> defines an interface for accessing
1539 various locale-dependent data (using the locale chosen with `setlocale').
1541 * Ulrich Drepper has contributed a new suite of functions for operation on
1542 wide-character and multibyte-character strings, in <wchar.h>;
1543 and classification and case conversion of wide characters, in <wctype.h>.
1544 These new functions are conforming to the ISO C, Amendement 1 specification.
1546 * There is now a second implementation of the standard I/O library available.
1547 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1548 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1550 * You can now use positional parameter specifications in format strings
1551 for the `printf' and `scanf' families of functions. For example,
1552 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1553 ``Number 6, Mr Jones''. This is mainly useful when providing different
1554 format strings for different languages, whose grammars may dictate
1555 different orderings of the values being printed. To support this
1556 feature, the interface for `register_printf_handler' has changed; see
1557 the header file <printf.h> for details.
1559 * The `printf' and `scanf' families of functions now understand a new
1560 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1561 to group numbers as indicated by the locale; for `scanf' and friends, this
1562 says to accept as valid only a number with all the proper grouping
1563 separators in the right places. In the default "C" locale, numbers are
1564 not grouped; but locales for specific countries will define the usual
1565 conventions (i.e. separate thousands with `,' in the US locale).
1567 * The pgrp functions have been regularized, slightly incompatibly but much
1568 less confusingly. The core functions are now `getpgid' and `setpgid',
1569 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1570 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1571 provided for compatibility. There is no longer an incompatible `getpgrp'
1572 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1574 * The new header file <fts.h> and suite of functions simplify programs that
1575 operate on directory trees. This code comes from 4.4 BSD.
1577 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1578 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1579 NSS scheme used in glibc.
1581 * There is a new malloc debugging hook `__memalign_hook'.
1583 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1584 `unsigned int' in <sys/types.h>. These are for compatibility only and
1585 their use is discouraged.
1587 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1588 done differently, so that it works even without GNU ld.
1590 * New function `euidaccess' checks allowed access to a file like `access',
1591 but using the effective IDs instead of the real IDs.
1593 * The time zone data files have been updated for the latest and greatest
1594 local time conventions of the countries of the world.
1596 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1599 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1600 for formatting floating-point numbers. They are provided only for
1601 compatibility; new programs should use `sprintf' instead. There are
1602 also equivalent function for the `long double' floating-point type and
1603 all functions also exist in a reentrant form.
1605 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1606 functions for maintaining the login-record files (primarily of use to
1607 system programs such as `login'), and convenient functions for
1608 allocating and initializing a pseudo-terminal (pty) device.
1610 * Ulrich Drepper has contributed new support for System V style
1611 shared memory and IPC on systems that support it.
1613 * Ulrich Drepper has contributed several miscellaneous new functions found
1614 in System V: The `hsearch' family of functions provide an effective
1615 implementation of hash tables; `a64l' and `l64a' provide a very simple
1616 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1619 * Ulrich Drepper has contributed new reentrant counterparts for the
1620 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1622 * Ulrich Drepper has contributed new, highly-optimized versions of several
1623 string functions for the i486/Pentium family of processors.
1625 * Ulrich Drepper has updated the Linux-specific code, based largely
1626 on work done in Hongjiu Lu's version of GNU libc for Linux.
1627 The GNU library now supports Linux versions 2.0.10 and later,
1628 using the ELF object file format (i[3456]86-*-linux).
1630 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1632 * David Mosberger-Tang and Richard Henderson have ported the C library
1633 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1634 dynamic linking support for ELF/Alpha.
1636 * Richard Henderson contributed several Alpha optimized assembler function
1637 for arithmetic and string handling.
1639 * Ulrich Drepper has contributed a new set of message catalog functions to
1640 support multiple languages using the <libintl.h> interface, for use with
1641 his new package GNU gettext. Translation volunteers have contributed
1642 catalogs of the library's messages in Spanish, German, and Korean.
1644 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1645 program and the `catgets' function for reading the catalog files it
1646 creates. (The <libintl.h> interface is preferred; we include the
1647 <nl_types.h> interface using `catgets' only for source compatibility with
1648 programs already written to use it.)
1650 * New header file <values.h> gives SVID-compatible names for <limits.h>
1653 * Various new macros, declarations, and small header files for compatibility
1656 * New function `group_member' is a convenient way to check if a process has
1657 a given effective group ID.
1659 * When using GCC 2.7 and later, the socket functions are now declared in a
1660 special way so that passing an argument of type `struct sockaddr_in *',
1661 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1662 `struct sockaddr *' type, does not generate a type-clash warning.
1664 * New function `error' declared in header file <error.h> is a convenient
1665 function for printing error messages and optionally exiting; this is the
1666 canonical function used in GNU programs. The new functions `err', `warn',
1667 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1668 doing the same thing.
1670 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1671 POSIX.2 `glob' function to do ~ and {...} expansion.
1673 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1674 `clearenv' which is used in POSIX.9 is also available.
1676 * New function `getsid' returns session ID number on systems that support it.
1678 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1679 files <db.h> and <mpool.h> provide a rich set of functions for several
1680 types of simple databases stored in memory and in files, and <ndbm.h> is
1681 an old `ndbm'-compatible interface using the `db' functions. Link with
1682 `-ldb' to get these functions.
1684 * New macro `strdupa' copies a string like `strdup', but uses local stack
1685 space from `alloca' instead of dynamic heap space from `malloc'.
1687 * New function `strnlen' is like `strlen' but searches only a given maximum
1688 number of characters for the null terminator. `stpncpy', `strndup' and
1689 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1692 * New function `statfs' in header <sys/statfs.h>.
1694 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1695 provide convenient functions for operating on blocks of null-terminated
1698 * A new suite of functions in <utmp.h> handle all the details of reading
1699 and writing the utmp file.
1701 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1704 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1705 completely POSIX compliant and also implemented the extended functionality
1706 to handle alternate digit representation and alternate era date formats.
1708 * Ulrich Drepper provided an implementation of the `strptime' function
1709 defined in XPG4.2 which transforms a string into a `struct tm' value.
1711 * Paul Eggert provided the tzselect shell script as part of the timezone
1712 code. The shell script makes it easy to select the correct timezone
1715 * The implementation of the malloc family of functions is completely replaced
1716 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1717 The implementation uses the mmap function (if available) and it is
1718 optimized for the use in multi threaded programs.
1720 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1721 functions. This new functionality is usable by specifying a special
1722 salt string and it is compatible with implementation on *BSD systems.
1724 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1725 `getsubopt' to handle second level command line options, `bsd_signal'
1726 to access BSD style `signal' functionality, the obsolete `regexp' style
1729 * the `lchown' function is available on system which support this
1732 * The implementation of the shadow password handling function was contributed
1735 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1737 * POSIX.1g support was added. The <sys/select.h> header is available,
1738 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1739 implementation of `getaddrinfo'.
1743 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1745 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1746 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1748 * The new function `daemon' from 4.4 BSD is useful for server programs that
1749 want to put themselves in the background.
1751 * Joel Sherrill has contributed support for several standalone boards that
1752 run without an operating system.
1754 * `printf', `scanf' and friends now accept a `q' type modifier for long
1755 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1757 * All of the code taken from BSD (notably most of the math and networking
1758 routines) has been updated from the BSD 4.4-Lite release.
1760 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1762 * The new functions `getdomainname' and `setdomainname' fetch or change the
1763 YP/NIS domain name. These are system calls which exist on systems which
1766 * The time zone data files have been updated for the latest international
1769 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1770 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1774 * The C library now includes support for Sun RPC, from Sun's free
1775 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1776 are included. (There is still no support for YP.)
1778 * Tom Quinn has contributed a port of the C library to SGI machines running
1779 Irix 4 (mips-sgi-irix4).
1781 * The new `lockf' function is a simplified interface to the locking
1782 facilities of `fcntl', included for compatibility.
1784 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1786 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1788 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1791 * The error message printed by `assert' for a failed assertion now includes
1792 the name of the program (if using GNU ld) and the name of the calling
1793 function (with versions of GCC that support this).
1795 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1797 * The library now includes the <sys/mman.h> header file and memory
1798 management functions `mmap', `munmap', `mprotect', `msync', and
1799 `madvise', on systems that support those facilities.
1801 * The interface for `mcheck' has changed slightly: the function called to
1802 abort the program when an allocation inconsistency is detected now takes
1803 an argument that indicates the type of failure. The new function
1804 `mprobe' lets you request a consistency check for a particular block at
1805 any time (checks are normally done only when you call `free' or `realloc'
1808 * It is now possible to easily cross-compile the C library, building on one
1809 system a library to run on another machine and/or operating system. All
1810 you need to do is set the variable `HOST_CC' in `configparms' to the
1811 native compiler for programs to run on the machine you are building on (a
1812 few generator programs are used on Unix systems); set `CC' to the
1815 * The new function `fexecve' (only implemented on the GNU system) executes
1816 a program file given a file descriptor already open on the file.
1820 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1821 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1823 * You can set the variable `libprefix' in `configparms' to specify a prefix
1824 to be prepended to installed library files; this makes it easy to install
1825 the GNU C library to be linked as `-lgnuc' or whatever.
1827 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1828 copies a limited number of characters from a string, and returns the
1829 address of the last character written.
1831 * You no longer need to check for whether the installed `stddef.h' is
1832 compatible with the GNU C library. configure now checks for you.
1834 * You can now define a per-stream `fileno' function to convert the
1835 stream's cookie into an integral file descriptor.
1837 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1838 allocates zero bytes of storage, and returns a unique pointer which
1839 you can pass to `realloc' or `free'. The behavior is undefined if
1840 you dereference this pointer.
1842 * The C library now runs on Sony NEWS m68k machines running either
1843 NewsOS 3 or NewsOS 4.
1845 * The new `syscall' function is a system-dependent primitive function
1846 for invoking system calls. It has the canonical behavior on Unix
1847 systems, including unreliable return values for some calls (such as
1848 `pipe', `fork' and `getppid').
1850 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1851 to `EAGAIN', which is the preferred name. On systems whose kernels
1852 use two distinct codes, the C library now translates EWOULDBLOCK to
1853 EAGAIN in every system call function.
1857 * The GNU C Library Reference Manual is now distributed with the library.
1858 `make dvi' will produce a DVI file of the printed manual.
1859 `make info' will produce Info files that you can read on line using C-h i
1860 in Emacs or the `info' program.
1861 Please send comments on the manual to bug-glibc-manual@gnu.org.
1863 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1865 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1867 * Jason Merrill has contributed a port to the Sequent Symmetry running
1868 Dynix version 3 (i386-sequent-dynix).
1870 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1871 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1873 * New function `memory_warnings' lets you arrange to get warnings when
1874 malloc is running out of memory to allocate, like Emacs gives you.
1876 * The C library now contains the relocating allocator used in Emacs 19 for
1877 its editing buffers. This allocator (ralloc) minimizes allocation
1878 overhead and fragmentation by moving allocated regions around whenever it
1879 needs to. You always refer to a ralloc'd region with a "handle" (a
1880 pointer to a pointer--an object of type `void **').
1882 * There is a new `printf' format: `%m' gives you the string corresponding
1883 to the error code in `errno'.
1885 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1886 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1887 pass, the `a' modifier says to fill in a `char **' you pass with a
1890 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1891 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1892 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1894 * `mkstemp' is a traditional Unix function to atomically create and open a
1895 uniquely-named temporary file.
1899 * The standard location for the file that says what the local timezone is
1900 has changed again. It is now `/usr/local/etc/localtime' (or more
1901 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1903 * The distribution no longer contains any files with names longer than 14
1906 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1907 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1909 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1913 * The configuration process has changed quite a bit. The `configure'
1914 script is now used just like the configuration scripts for other GNU
1915 packages. The `sysdeps' directory hierarchy is much rearranged.
1916 The file `INSTALL' explains the new scheme in detail.
1918 * The header files no longer need to be processed into ANSI C and
1919 traditional C versions. There is just one set of files to install, and
1920 it will work with ANSI or old C compilers (including `gcc -traditional').
1922 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1923 MIPS DECStation running Ultrix 4.
1925 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1926 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1927 made itself into a shared library.
1929 * Yet further improved support for the i386, running 4.3 BSD-like systems
1930 (such as Mach 3 with the Unix single-server), or System V.
1932 * New function `strncasecmp' to do case-insensitive string comparison
1933 with limited length.
1935 * New function `strsep' is a reentrant alternative to `strtok'.
1937 * New functions `scandir' and `alphasort' for searching directories.
1939 * New function `setenv' is a better interface to `putenv'.
1941 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1942 function for traversing a directory tree.
1944 * The GNU obstack package is now also part of the C library.
1945 The new function `open_obstack_stream' creates a stdio stream that
1946 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1947 formatted output directly to an obstack.
1949 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1950 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1952 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1954 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1955 things to your strings.
1957 * There are some new test programs: test-fseek, testmb, and testrand.
1959 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1960 These ports are not finished, but are a good starting place for really
1961 supporting those systems.
1963 * `/etc/localtime' is now the standard location for the file that says what
1964 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1965 This follows the general principle that `/etc' is the place for all local
1966 configuration files.
1968 * The C library header files now use `extern "C"' when used by the C++
1969 compiler, so the C library should now work with C++ code.
1971 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1972 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1975 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1976 function which uses the `merge sort' algorithm, and is said to be
1977 significantly faster than the old GNU `qsort' function. Merge sort is
1978 now the standard `qsort' function. The new algorithm can require a lot
1979 of temporary storage; so, the old sorting function is called when the
1980 required storage is not available.
1982 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1983 provides the Unix `crypt' function, plus some other entry points.
1985 * The code and header files taken from 4.4 BSD have been updated with the
1986 latest files released from Berkeley.
1988 ----------------------------------------------------------------------
1989 Copyright information:
1991 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
1993 Permission is granted to anyone to make or distribute verbatim copies
1994 of this document as received, in any medium, provided that the
1995 copyright notice and this permission notice are preserved,
1996 thus giving the recipient permission to redistribute in turn.
1998 Permission is granted to distribute modified versions
1999 of this document, or of portions of it,
2000 under the above conditions, provided also that they
2001 carry prominent notices stating who last changed them.
2004 version-control: never
projects / platform / upstream / glibc.git / blob