1 GNU C Library NEWS -- history of user-visible changes. 2011-8-20
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, 12852, 12874, 12885, 12907, 12922, 12935, 13007, 13021, 13114
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 * Optimized strcat and strncat on x86-64.
28 Contributed by Liubov Dmitrieva.
30 * New interfaces: scandirat, scandirat64
31 Implemented by Ulrich Drepper.
35 * The following bugs are resolved with this release:
37 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
38 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
39 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
40 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
41 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
42 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
43 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
44 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
45 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
46 12795, 12811, 12813, 12814, 12841
48 * The RPC implementation in libc is obsoleted. Old programs keep working
49 but new programs cannot be linked with the routines in libc anymore.
50 Programs in need of RPC functionality must be linked against TI-RPC.
51 The TI-RPC implementation is IPv6 enabled and there are other benefits.
53 Visible changes of this change include (obviously) the inability to link
54 programs using RPC functions without referencing the TI-RPC library and the
55 removal of the RPC headers from the glibc headers.
56 Implemented by Ulrich Drepper.
58 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
59 syncfs, setns, sendmmsg
61 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
62 yue_HK, lij_IT, mhr_RU
64 * New encodings: CP770, CP771, CP772, CP773, CP774
66 * New program sotruss to trace calls through PLTs
67 Implemented by Ulrich Drepper.
69 * The malloc hook implementation is marked deprecated and will be removed
70 from the default implementation in the next version. The design never
71 worked ever since the introduction of threads. Even programs which do
72 not create threads themselves can use multiple threads created internally.
76 * The following bugs are resolved with this release:
78 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
79 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
80 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
81 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
84 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
86 * POWER7 optimizations: memset, memcmp, strncmp
88 * New optimized string functions for x86-64: strnlen (SSE2),
89 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
90 Implemented by Ulrich Drepper.
94 * The following bugs are resolved with this release:
96 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
97 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
98 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
99 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
100 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
101 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
102 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
103 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
105 * New interfaces: pthread_getname_np, pthread_setname_np
107 * New Linux interface: recvmmsg
109 * STT_GNU_IFUNC implemented for Sparc by David Miller.
111 * The dynamic linker now recognizes supported ABI versions from the
112 EI_ABIVERSION field in the ELF header.
113 Implemented by Ulrich Drepper.
115 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
116 will not be used to fill in password fields in the passwd.byname replies.
117 Instead it is used to synthesize the shadow.byname table, should it be
118 missing. This is a useful mode in some installations involving Solaris.
119 Implemented by Ulrich Drepper.
121 * New locales: kok_IN, sq_MK, cv_RU
125 * The following bugs are resolved with this release:
127 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
128 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
129 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
130 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
131 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
132 10789, 10817, 10823, 10840, 10847
134 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
136 Implemented by Ulrich Drepper.
138 * Checking version of longjmp added that fails if an uninitialized stack
139 frame would be created. Implemented by Ulrich Drepper.
141 * STT_GNU_IFUNC is now supported in static executables.
142 Implemented by H.J. Lu.
144 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
146 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
147 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
148 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
149 Contributed by H.J. Lu.
151 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
152 Implemented by Ulrich Drepper.
154 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
156 Contributed by H.J. Lu.
158 * Support for fma instruction in AVX on x86-64.
159 Implemented by H.J. Lu and Ulrich Drepper.
161 * AVX support in x86-64 auditing support in ld.so.
162 Implemented by H.J. Lu.
164 * STB_GNU_UNIQUE support added.
165 Implemented by Ulrich Drepper.
167 * Implement second fallback mode for optimized DNS lookup for even more
168 broken environments. If two requests from the same port are not
169 handled correctly close the socket and open a new one before sending
170 the second request. The 'single-request-reopen' option in /etc/resolv.conf
171 can be used to select this mode right away, instead of rediscovering the
172 necessity is every process again.
173 Implemented by Ulrich Drepper.
175 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
176 Implemented by Adam Tkac.
178 * Optimized iconv conversions for S390x.
179 Implemented by Andreas Krebbel.
181 * Using condvars with PI mutexes is now more efficient due to kernel
182 support for requeueing to PI futexes. NPTL support added for x86-64.
183 Implemented by Ulrich Drepper.
185 * New locales: ps_AF, my_MM
189 * The following bugs are resolved with this release:
191 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
192 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
193 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
194 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
195 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
197 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
198 Implemented by Ulrich Drepper.
200 * New Linux interfaces: accept4, fallocate, fallocate64.
201 Implemented by Ulrich Drepper.
203 * Correct declarations of string function when used in C++ code. This
204 could lead to compile errors for invalid C++ code.
206 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
209 * New POSIX 2008 interface: psiginfo
210 Implemented by Ulrich Drepper.
212 * New ISO C++1x interfaces: quick_exit, at_quick_exit
213 Implemented by Ulrich Drepper.
215 * Support for selecting between multiple function definitions at runtime
216 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
218 * The libcrypt library can now use the hash function implementations in
219 NSS. Implemented by Ulrich Drepper.
221 * The malloc implementation can be compiled to be less memory efficient
222 but higher performing in multi-threaded programs.
223 Implemented by Ulrich Drepper.
225 * New locales: nan_TW@latin, ks_IN
227 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
228 Implemented by Ulrich Drepper.
230 * Extended printf hook support. It is possible to use user-defined types
231 and extend existing format specifiers.
232 Implemented by Ulrich Drepper.
234 * Handling for group shadow files has been added.
235 Implemented by Ulrich Drepper.
237 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
238 servers (the case, e.g., for some people using the built-in DNS
239 server in ADSL modems/routers). There is a once-per-process timeout
240 in case of a broken server. To avoid it, users can run nscd or put
241 'options single-request' in /etc/resolv.conf.
242 Implemented by Ulrich Drepper.
246 * The following bugs are resolved with this release:
248 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
249 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
250 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
251 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
252 6968, 6974, 6980, 6995, 7008, 7009, 7029
254 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
255 up at the same time. Implemented by Ulrich Drepper.
257 * TLS descriptors for LD and GD on x86 and x86-64.
258 Implemented by Alexandre Oliva.
260 * getaddrinfo now handles DCCP and UDPlite.
261 Implemented by Ulrich Drepper.
263 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
264 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
265 Implemented by Ulrich Drepper.
267 * New implementation of memmem, strstr, and strcasestr which is O(n).
268 Implemented by Eric Blake.
270 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
272 * Implement "e" option for popen to open file descriptor with the
273 close-on-exec flag set. Implemented by Ulrich Drepper.
275 * Implement "b" mode for fmemopen. In this mode writes writes don't
276 implicitly add a NUL byte and seeks from the end of the buffer really
277 use the buffer end, not the string length as the basis.
278 Implemented by Ulrich Drepper.
280 * Many functions, exported and internal, now atomically set the close-on-exec
281 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
283 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
285 Implemented by Pravin Satpute.
287 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
291 * The following bugs are resolved with this release:
293 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
294 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
295 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
296 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
297 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
298 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
299 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
301 * New locales: bo_CN, bo_IN, shs_CA.
303 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
305 * Sorting rules for some Indian languages (Devanagari and Gujarati).
306 Implemented by Pravin Satpute.
308 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
310 * nscd caches now all timeouts for DNS entries
311 Implemented by Ulrich Drepper.
313 * nscd is more efficient and wakes up less often.
314 Implemented by Ulrich Drepper.
316 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
317 vdprintf, and obstack_vprintf.
318 Implemented by Jakub Jelinek.
320 * Faster memset for x86-64.
321 Implemented by Harsha Jagasia and H.J. Lu.
323 * Faster memcpy on x86.
324 Implemented by Ulrich Drepper.
326 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
327 Implemented by Ulrich Drepper.
329 * Faster sqrt and sqrtf implemention for some PPC variants.
330 Implemented by Stephen Munroe.
334 * The following bugs are resolved with this release:
336 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
337 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
338 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
339 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
340 5071, 5103, 5104, 5112, 5113, 5184, 5186
342 * More checking functions: fread, fread_unlocked, open*, mq_open.
343 Implemented by Jakub Jelinek and Ulrich Drepper.
345 * Extend fortification to C++. Implemented by Jakub Jelinek.
347 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
348 by not recognizing 'a' as a modifier when those specs are requested.
349 Implemented by Jakub Jelinek.
351 * PPC optimizations to math and string functions.
352 Implemented by Steven Munroe.
354 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
355 options to be passed. Implemented by Ulrich Drepper.
357 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
359 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
360 Implemented by Ulrich Drepper.
362 * Handle private futexes in the NPTL implementation.
363 Implemented by Jakub Jelinek and Ulrich Drepper.
365 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
366 Implemented by Roland McGrath and Ulrich Drepper.
368 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
370 * SHA-256 and SHA-512 based password encryption.
371 Implemented by Ulrich Drepper.
373 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
374 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
377 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
378 Implemented by Ulrich Drepper.
382 * The following bugs are resolved with this release:
384 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
385 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
386 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
387 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
388 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
389 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
390 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
393 * New Linux interfaces: epoll_pwait, sched_getcpu.
395 * New generic interfaces: strerror_l.
397 * nscd can now cache the services database. Implemented by Ulrich Drepper.
401 * The following bugs are resolved with this release:
403 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
404 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
405 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
406 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
407 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
408 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
409 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
410 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
411 3225, 3251, 3252, 3253, 3273
413 * For Linux, the sorting of addresses returned by getaddrinfo now also
414 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
415 Implemented by Ulrich Drepper.
417 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
418 Implemented by Ulrich Drepper.
420 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
422 * New iconv module for MIK. Contributed by Alexander Shopov.
424 * For sites with broken group and/or passwd database, the auto-propagate
425 option of nscd can prevent creating ID lookup entries from the results
426 of a name lookup and vice versa. This usually is no problem but some
427 site might have problems with the default behavior.
428 Implemented by Ulrich Drepper.
430 * Iterating over entire database in NIS can be slow. With the
431 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
432 to trade time for memory. The entire database will be read at once.
433 Implemented by Ulrich Drepper.
435 * The interfaces introduced in RFC 3542 have been implemented by
438 * Support for the new ELF hash table format was added by Ulrich Drepper.
440 * Support for priority inheritance mutexes added by Jakub Jelinek and
443 * Support for priority protected mutexes added by Jakub Jelinek.
445 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
446 or_IN, csb_PL, fy_NL, sr_ME.
450 * More overflow detection functions.
452 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
453 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
455 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
456 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
457 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
458 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
459 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
460 by Masahide Washizawa.
462 * It is now possible to install audit libraries for the dynamic linker using
463 LD_AUDIT. Implemented by Ulrich Drepper.
465 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
466 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
467 For a libc and libpthread that works well on Linux 2.4 kernels, we
468 recommend using the stable 2.3 branch.
470 * The new function open_wmemstream acts like open_memstream,
471 but uses a wchar_t wide character buffer.
473 * The new function ppoll is an improved version of poll, similar to pselect.
475 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
476 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
477 renameat, unlinkat, linkat, symlinkat, readlinkat.
479 * New Linux kernel system calls: unshare,
480 inotify_init, inotify_add_watch, inotify_rm_watch.
482 * The euidaccess function is now also known by the alias eaccess,
483 for compatibility with some other systems.
485 * Timezone data updated to 2006b version.
489 * The following bugs are resolved with this release:
491 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
492 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
493 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
494 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
495 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
496 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
498 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
500 * As of this release, GCC 4 can be used to compile the C Library.
502 * Timezone data updated to 2005m version.
506 * The following bugs are resolved with this release:
508 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
509 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
510 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
511 777, 787, 821, 822, 823, 825
513 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
517 * Support for RFC 3678. Real implementations exist only for Linux so far.
518 Implemented by Ulrich Drepper.
520 * nscd can now cache entries persistently. Expiring entries are reloaded.
521 For speedups the cache can be shared in memory with client processes.
522 Implemented by Ulrich Drepper.
524 * nscd can now perform SELinux checks.
525 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
527 * getaddrinfo queries are now cached. Canonical name lookup is performed
529 Implemented by Ulrich Drepper.
531 * The nothrow function attribute is used when headers are used by gcc when
532 compiling C code. This can avoid significant amounts of exception
535 * The malloc functions perform more error checking and are stricter when
536 it comes to reacting on errors. The default action is to terminate
537 the process after showing an error message. Implemented by Ulrich Drepper.
539 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
540 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
542 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
543 namespaces using the new function dlmopen(). This feature is of course,
544 like most other dynamic loading functionality, not available in statically
545 linked applications. Implemented by Ulrich Drepper.
547 * Low-overhead boundary checking variants of string and some stdio functions
548 were added. These are to be used in conjunction with a gcc patch by
549 Jakub Jelinek which adds calls to these functions if possible.
550 Implemented by Jakub Jelinek and Ulrich Drepper.
552 * Old code for several operating systems and machine architectures that
553 have not been in working condition in a long time have been removed from
554 the main source tree maintained by the GNU C Library's maintainers.
555 These files are now reside in the separate `ports' source module
556 that is usable as an add-on when building the library.
560 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
561 interrogate the dynamic linker, compatible with the Solaris interface.
563 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
564 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
566 * getifaddrs now uses the netlink interface on Linux to get its information.
567 Implemented by Thorsten Kukuk.
569 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
570 Implemented by Ulrich Drepper.
572 * support for non-executable stacks on x86 has been added. Changes mostly
575 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
578 * getaddrinfo now performs destination address selection according to
583 * Thread-safe interfaces for many functions that access locale data
584 were added in version 2.3, but these features were omitted from NEWS.
585 Many functions have variants with an `_l' suffix that take a `locale_t'
586 object as a parameter rather than consulting the current locale.
587 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
588 create and maintain `locale_t' objects. Additionally, the new function
589 `uselocale' sets "the current locale" (as used by functions not so
590 parameterized) set for an individual thread. These features were added
591 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
593 * The functions getresuid, getresgid, setresuid, and setresgid, which
594 have long been available on Linux, are now declared in <unistd.h>
595 and are now also available on the Hurd.
597 * ELF thread-local storage support (TLS) now works on x86-64.
599 * The new dynamic string token $LIB is expanded in shared library names.
600 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
602 * Aldy Hernandez contributed complete software floating point support for
603 PowerPC machines with no FPU.
605 * fexecve is implemented on Linux.
607 * The `btowc' function should work at least twice as fast due to
608 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
610 * With approriate thread add-ons cancelable functions are now implemented
611 in libc.so as well. No need to call the function in libpthread. This
612 change allowed to finally disable the incorrect and expensive handling
613 of weak definition in ld.so.
615 * Yet more PLT entries in libc.so have been removed. We finally arrived
616 at the bare minimum. Startup times improved appropriately.
618 * Support for the new Linux/x86 system call interface was added. The
619 AT_SYSINFO auxiliary vector entry is recognized and handled.
623 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
626 * iconv (the program and the interface) now accepts empty names (excluding
627 options like //TRANSLIT) to mean "use charset of current locale".
629 * localedef can now transliterate characters in strings which are not in
630 the provided charmap. The information from the input locale is used.
632 * Prelinking support was added for ELF targets. This requires additional
633 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
635 * Read-only stdio streams now use mmap to speed up operation by eliminating
636 copying and buffer underflows. To use add 'm' to the mode string of
637 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
639 * The malloc functions were completely rewritten by Wolfram Gloger based
640 on Doug Lea's malloc-2.7.0.c.
642 * Isamu Hasegawa contributed a completely new and POSIX-conformant
643 implementation of regex.
645 * Bruno Haible upgraded the iconv and locale implementation to support
648 * Contents of the LC_* and LANG environment variables in the CEN style are
649 not recognized anymore. It never was used. Change by Ulrich Drepper.
651 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
652 thread-local storage (TLS) ABI on some platforms.
653 Changes by Ulrich Drepper. SH support by Kaz Kojima.
655 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
656 EUC-JISX0213, and TSCII.
658 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
659 BSD-compatible interface for getting all network interface addresses.
660 Implementation for IPv4 by Roland McGrath.
662 * Loading of locale data is faster due to the introduction of a locale
663 archive. Implemented by Roland McGrath and Ulrich Drepper.
665 * Startup times are significantly reduced by not using exported functions
666 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
669 * Steven Munroe contributed a port to PowerPC64/Linux.
673 * The Hurd now uses the GNU libio implementation of stdio rather than the
674 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
676 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
677 with the same behavior as the Linux system call of the same name.
681 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
682 128-bit long double format.
684 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
685 IBM1161, and IBM1162 charsets.
687 * Andreas Jaeger contributed a port to x86-64/Linux.
689 * Peter Bruin contributed a port to PowerPC/Hurd.
691 * libc functions using I/O streams now can handle wide-oriented streams
694 * optimizations in the dynamic linker. Binaries created by recent binutils
695 versions start up quicker due to reduced time spent on relocations.
697 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
701 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
702 asinh, atanh, j0 for the 128-bit long double format.
704 * Bruno Haible updated all the code handling Unicode in some form to
707 * Speed of regex for single-byte locales is back to previous levels.
708 Patch by Isamu Hasegawa.
710 * Alpha, SPARC, and IA-64 now also using floating stacks.
712 * Startup time of internationalized applications greatly improved through
713 iconv cache. Use iconvconfig to generate the cache file.
714 Contributed by Ulrich Drepper.
716 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
717 severe performance problems. Patch by David Mosberger.
719 * The Hurd port got a lot more functionality like AIO, various stdio
720 extensions, etc. Mainly done by Roland McGrath.
722 * mtrace can now lookup symbols in shared libraries.
726 * Intel's IA-64 math library is largely integrated. It provides fast and
727 accurate implementatations for most basic and standard math functions
728 in float, double, and long double format.
730 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
731 and asin for the 96-bit long double format and asin, log, tan for the
732 128-bit long double format.
734 * The beginning of a last-bit accurate math library by IBM Haifa were added.
735 The basic double functions exist today. Contributed by Abraham Ziv
736 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
737 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
739 * An asynchronous name lookup library was added. The interface is designed
740 after POSIX AIO. The proposal was circulated beforehand to get comments.
741 No negative ones came in. Implemented by Ulrich Drepper.
743 * Port to S390/64bit contributed by Martin Schwidefsky
744 <schwidefsky@de.ibm.com>.
746 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
747 of functions for Linux/IA-64.
749 * The RPC code is now thread safe. Threads can now use the same service
750 of different services at the same time. Patch by Eric Norum
751 <eric.norum@usask.ca> with some help by Ulrich Drepper.
753 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
754 family of functions for Linux/S390.
756 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
757 of functions for Linux/x86.
759 * Port to Linux/CRIS contributed by Axis Communications.
763 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
764 we can now check for namespace violations and missing declarations. The
765 result is that almost all headers are now Unix-compliant (as defined in
766 the upcoming XPG6). The negative side is that some programs might need
767 corrections, too, if they depend on the incorrect form of the headers in
768 previous versions which defined too many symbols and included too many
771 * regex now handles multibyte character sets correctly.
772 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
774 * iconv (the program) does now conform to the upcoming XPG6 and handles
775 charmaps. Instead of the charset names the path of charmaps can be
776 provided and the conversion happens based on this data.
777 Contributed by Ulrich Drepper.
779 * The locale program now provides detailed information about the installed
784 only lists the names of the supported locales
788 provides details such as country, language, and codeset name.
789 Contributed by Ulrich Drepper.
793 * The gencat program now parses the input file according to the charset
794 selected by the LC_CTYPE category. This is important for stateful
795 character sets. To make generating catalogs easier there is a way
796 to overwrite the charset selected by the locale: before the first
797 message or $ quote line the catalog can contain a line like
801 to select the charset (ISO-8859-2 in this case).
803 Implemented by Shinya Hanataka and Ulrich Drepper.
805 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
806 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
807 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
809 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
810 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
812 * The LANGUAGE environment variable is now ignored unless the locale is
813 changed from the default "C" locale.
815 * The usual bug fixes.
819 * Greg McGary added runtime support for bounds checking using gcc's
820 new -fbounded-pointers option. ix86 target is complete. PowerPC
823 * Thorsten Kukuk added secure mode support to nscd.
825 * The Berkeley db libraries have been removed.
827 Related, the nss_db module is now in a separate package since it
828 obviously requires a database library being available.
830 * Wide character I/O streams implemented by Ulrich Drepper.
832 * Functions from the extended socket API added by Ulrich Drepper.
834 * Functions feenableexcept and fedisableexcept to control the
835 behaviour of individual exceptions have been added by Andreas Jaeger.
837 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
839 * The resolver code has been updated from bind 8.2.3-T5B which supports
840 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
843 This change could in some situations effect backward compatibility. Since
844 now `_res' is a thread-local instead of a global variable, modifying it
845 in one thread does not have any effect in other threads.
847 The resolver library was also extended to allow IPv6 as the transport
848 protocol for the requests. This work was done by Stig Venaas.
850 * Compatibility code for K&R C compilers has been removed from the
851 header files. A ISO C compiler is needed to use the library
852 (conforming to either C89 or C99 standard).
854 * Complete rewrite of the localedef program to support multibyte character
855 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
856 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
857 Implemented by Ulrich Drepper.
859 Bruno Haible significantly improved the generation and use of the data
860 structures for the wide character tables.
862 * Plural handling in gettext implemented by Ulrich Drepper.
864 * The utmp daemon has been removed.
866 * The port to MIPS-Linux has been finished by Andreas Jaeger.
868 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
871 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
873 * POSIX barriers implemented by Kaz Kylheku.
875 * POSIX spawn function family implemented by Ulrich Drepper.
877 * POSIX spinlocks are now available.
879 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
881 * the configure option --enable-kernel=X.Y.Z allows to strip out
882 compatibility for kernel versions before X.Y.Z. This is currently only
883 implemented for Linux.
885 * the sockaddr_in6 structure changed. The IPv6 working group added a new
886 field sin6_scope_id. This means that all programs using IPv6 should be
887 recompiled. Don't expect binary compatibility with previous glibc
890 * various conversion modules for IBM character sets contributed by
893 * IA-64 port by Jes Sorensen and HJ Lu.
895 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
896 Compiling the GNU C Library for Linux/ia64
897 ******************************************
899 Please refer to the file INSTALL in the same directory as you found
900 this file for general information about configuring and compiling
903 For general inquiries about glibc under Linux/ia64 please use the
904 following mailing list linux-ia64@linuxia64.org or one of the relevant
907 Recommended Tools for Compilation
908 =================================
910 In order for glibc-2.2 to build correctly on the ia64 you need at
911 least the following versions of the GNU tools (the :
913 * The Cygnus toolchain snapshot for the ia64 as of August 4
914 including the provided set of patches. It is however recommend
915 you use the October 24 toolchain snapshot or a more recent version.
917 OR alternatively you can try the following (the Cygnus toolchain is
918 the recommended solution):
920 * GCC and binutils, GAS and GNU LD out of CVS from
921 sources.redhat.com as of August 28, 2000 or later. The CVS tree
922 may require special patches to work properly on the ia64.
924 Configuring and compiling GNU Libc for Linux/ia64
925 =================================================
927 The library requires Linux kernel version 2.4.0-test4-000728 or
928 later to funtion properly. Besides that it support for debug libraries
929 is currently untested. Hence the following options
930 are required for configuring the library:
932 --disable-debug --enable-kernel=2.4.0
934 It is also important that you make sure the library picks up the
935 appropriate kernel header files, if you do not have recent enough
936 kernel headers in /usr/src/linux/include, you should use the
937 --with-headers=<path> option to specify the location.
939 As an example I personally use the following options to configure
944 --enable-kernel=2.4.0
948 --with-headers=/home/jes/linux/include
953 Jes Sorensen <jes@linuxcare.com>,
955 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
969 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
971 * New xdr functions are added; some rpc functions are now 64bit clean.
973 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
975 * Fixed known incompatibilities with glibc 2.0.
977 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
979 * Optimized a number of functions (especially the ELF dynamic loader).
981 * Update timezone data files.
983 * lots of charmaps corrections
985 * some new locale definitions and charmaps
990 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
991 conform to POSIX member type requirements. Symbol versions have been
992 adjusted as needed within the library, and for direct use by applications,
993 but there is potential for problems if third-party libraries use
994 struct timeval as part of their interface. This does not present
995 a problem for X and other "essential" system libraries.
997 * An additional locale model to support C++ Standard Library locale
998 model and probably more was implemented by Ulrich Drepper.
1000 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1003 * Miles Bader provided the `argp' function family to support hierachical
1004 command line argument parsing, layered on top of getopt.
1006 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1008 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1011 * scanf recognizes the %a and %A format for scanning floating point numbers.
1013 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1014 information and interfaces for the available integer types.
1016 * about 130 new math functions were added to implement the ISO C9x math
1019 * the new header <complex.h> contains definitions of the complex math
1020 functions from ISO C 9X.
1022 * the new header <tgmath.h> defines generic macros to use complex or
1023 real valued functions.
1025 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1027 * Andreas Jaeger provided a test suite for the math library.
1029 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1031 * Ulrich Drepper added character set conversion functions (iconv).
1033 * Optimized string functions have been added.
1035 * The localedata addon is now part of glibc.
1037 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1039 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1040 daemon for NSS (nscd).
1042 Missing a better place here are some numbers on improvements. Under
1043 Linux 2.1.125 un-tar-ing the kernel sources takes
1047 using local files 12.19s 6.88s 22.91s
1049 using NIS 13.92s 8.91s 26.34s
1051 using NIS & nscd 10.37s 7.34s 25.30s
1053 using NIS+ 27.57s 30.37s 640.46s
1055 using NIS+ & nscd 10.25s 7.83s 26.51s
1057 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1059 Keep in mind that non-namelookup related operations dominate above times.
1060 It was just a common complain that using NIS+ unpacking the kernel is
1063 [1] The old nscd implementation is not available anymore since it was
1064 distributed with glibc up to version 2.0.98 and thus is now replaced.
1066 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1068 * Mark Kettenis provided a Hesiod NSS module.
1070 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1071 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1073 * rcmd can now handle netgroups (Dick Streefland).
1075 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1078 * Support for the IPv6 protocol has been added to the socket API, as per the
1079 latest draft standards.
1081 * Support for Linux 2.2 has been added.
1083 * Interface changes relative to the latest 2.0.x release:
1084 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1085 addseverity NEW: Unix98
1086 alphasort64 NEW: LFS
1087 argp_err_exit_status NEW: argp, GNU ext
1088 argp_error NEW: argp, GNU ext
1089 argp_failure NEW: argp, GNU ext
1090 argp_help NEW: argp, GNU ext
1091 argp_parse NEW: argp, GNU ext
1092 argp_program_bug_address NEW: argp, GNU ext
1093 argp_program_version NEW: argp, GNU ext
1094 argp_program_version_hook NEW: argp, GNU ext
1095 argp_state_help NEW: argp, GNU ext
1096 argp_usage NEW: argp, GNU ext
1097 authdes_create NEW: Secure RPC
1098 authdes_getucred NEW: Secure RPC
1099 authdes_pk_create NEW: Secure RPC
1100 backtrace NEW: GNU ext.
1101 backtrace_symbols NEW: GNU ext.
1102 backtrace_symbols_fd NEW: GNU ext.
1104 cacosf NEW: ISO C 9x
1105 cacosh NEW: ISO C 9x
1106 cacoshf NEW: ISO C 9x
1107 cacoshl NEW: ISO C 9x
1108 cacosl NEW: ISO C 9x
1115 casinf NEW: ISO C 9x
1116 casinh NEW: ISO C 9x
1117 casinhf NEW: ISO C 9x
1118 casinhl NEW: ISO C 9x
1119 casinl NEW: ISO C 9x
1121 catanf NEW: ISO C 9x
1122 catanh NEW: ISO C 9x
1123 catanhf NEW: ISO C 9x
1124 catanhl NEW: ISO C 9x
1125 catanl NEW: ISO C 9x
1126 cbc_crypt NEW: Secure RPC
1130 ccoshf NEW: ISO C 9x
1131 ccoshl NEW: ISO C 9x
1137 cimagf NEW: ISO C 9x
1138 cimagl NEW: ISO C 9x
1139 clearerr_locked REMOVED
1140 clntunix_create NEW: sunrpc ext
1142 clog10 NEW: ISO C 9x
1143 clog10f NEW: ISO C 9x
1144 clog10l NEW: ISO C 9x
1154 cprojf NEW: ISO C 9x
1155 cprojl NEW: ISO C 9x
1157 crealf NEW: ISO C 9x
1158 creall NEW: ISO C 9x
1163 csinhf NEW: ISO C 9x
1164 csinhl NEW: ISO C 9x
1167 csqrtf NEW: ISO C 9x
1168 csqrtl NEW: ISO C 9x
1172 ctanhf NEW: ISO C 9x
1173 ctanhl NEW: ISO C 9x
1175 des_setparity NEW: Secure RPC
1176 ecb_crypt NEW: Secure RPC
1177 endutxent NEW: Unix98
1179 exp10f NEW: ISO C 9x
1180 exp10l NEW: ISO C 9x
1184 fattach NEW: STREAMS
1185 fdetach NEW: STREAMS
1189 feclearexcept NEW: ISO C 9x
1190 fegetenv NEW: ISO C 9x
1191 fegetexceptflag NEW: ISO C 9x
1192 fegetround NEW: ISO C 9x
1193 feholdexcept NEW: ISO C 9x
1195 feraiseexcept NEW: ISO C 9x
1196 ferror_locked REMOVED
1197 fesetenv NEW: ISO C 9x
1198 fesetexceptflag NEW: ISO C 9x
1199 fesetround NEW: ISO C 9x
1200 fetestexcept NEW: ISO C 9x
1201 feupdateenv NEW: ISO C 9x
1202 fflush_locked REMOVED
1206 fgets_unlocked NEW: GNU ext.
1207 fileno_locked REMOVED
1219 fputc_locked REMOVED
1220 fputs_unlocked NEW: GNU ext.
1221 fread_unlocked NEW: GNU ext.
1226 fstatvfs NEW: Unix98
1230 ftruncate64 NEW: LFS
1232 fwrite_unlocked NEW: GNU ext.
1233 gai_strerror NEW: IPv6
1237 getchar_locked REMOVED
1239 getdate_err NEW: Unix98
1240 getdate_r NEW: GNU ext.
1242 getnameinfo NEW: IPv6
1243 getnetname NEW: Secure RPC
1244 getpmsg NEW: STREAMS
1245 getpt NEW: Unix98 PTY
1246 getrlimit64 NEW: LFS
1247 getutxent NEW: Unix98
1248 getutxid NEW: Unix98
1249 getutxline NEW: Unix98
1250 glob64 NEW: GNU ext.
1251 globfree64 NEW: GNU ext.
1252 gnu_get_libc_release NEW: GNU ext.
1253 gnu_get_libc_version NEW: GNU ext.
1254 grantpt NEW: Unix98 PTY
1255 host2netname NEW: Secure RPC
1257 iconv_close NEW: iconv
1258 iconv_open NEW: iconv
1259 if_freenameindex NEW: IPv6
1260 if_indextoname NEW: IPv6
1261 if_nameindex NEW: IPv6
1262 if_nametoindex NEW: IPv6
1263 in6addr_any NEW: IPv6
1264 in6addr_loopback NEW: IPv6
1265 inet6_isipv4mapped NEW: IPv6
1266 isastream NEW: STREAMS
1267 iswblank NEW: GNU ext.
1268 key_decryptsession NEW: Secure RPC
1269 key_decryptsession_pk NEW: Secure RPC
1270 key_encryptsession NEW: Secure RPC
1271 key_encryptsession_pk NEW: Secure RPC
1272 key_gendes NEW: Secure RPC
1273 key_get_conv NEW: Secure RPC
1274 key_secretkey_is_set NEW: Secure RPC
1275 key_setnet NEW: Secure RPC
1276 key_setsecret NEW: Secure RPC
1277 llrint NEW: ISO C 9x
1278 llrintf NEW: ISO C 9x
1279 llrintl NEW: ISO C 9x
1280 llround NEW: ISO C 9x
1281 llroundf NEW: ISO C 9x
1282 llroundl NEW: ISO C 9x
1287 lrintf NEW: ISO C 9x
1288 lrintl NEW: ISO C 9x
1289 lround NEW: ISO C 9x
1290 lroundf NEW: ISO C 9x
1291 lroundl NEW: ISO C 9x
1293 makecontext NEW: Unix98
1294 mempcpy NEW: GNU ext.
1297 modify_ldt NEW: kernel
1301 nearbyint NEW: ISO C 9x
1302 nearbyintf NEW: ISO C 9x
1303 nearbyintl NEW: ISO C 9x
1304 netname2host NEW: Secure RPC
1305 netname2user NEW: Secure RPC
1306 nexttoward NEW: ISO C 9x
1307 nexttowardf NEW: ISO C 9x
1308 nexttowardl NEW: ISO C 9x
1312 passwd2des NEW: Secure RPC
1314 pow10f NEW: GNU ext.
1315 pow10l NEW: GNU ext.
1318 printf_size NEW: GNU ext.
1319 printf_size_info NEW: GNU ext.
1320 profil_counter REMOVED
1321 pthread_mutexattr_getkind_np REPLACED
1322 pthread_mutexattr_setkind_np REPLACED
1323 ptsname NEW: Unix98 PTY
1324 ptsname_r NEW: Unix98 PTY
1326 putchar_locked REMOVED
1327 putgrent NEW: GNU ext.
1329 putpmsg NEW: STREAMS
1330 pututxline NEW: Unix98
1334 readdir64_r NEW: LFS
1335 remquo NEW: ISO C 9x
1336 remquof NEW: ISO C 9x
1337 remquol NEW: ISO C 9x
1339 roundf NEW: ISO C 9x
1340 roundl NEW: ISO C 9x
1342 scalbln NEW: ISO C 9x
1343 scalblnf NEW: ISO C 9x
1344 scalblnl NEW: ISO C 9x
1346 sendfile NEW: kernel
1347 setcontext NEW: Unix98
1348 setrlimit64 NEW: LFS
1349 setutxent NEW: Unix98
1351 sigignore NEW: Unix98
1352 sigqueue NEW: POSIX.1b
1353 sigrelse NEW: Unix98
1354 sigset NEW: POSIX.1b
1355 sigtimedwait NEW: POSIX.1b
1356 sigwaitinfo NEW: POSIX.1b
1357 sincos NEW: GNU ext.
1358 sincosf NEW: GNU ext.
1359 sincosl NEW: GNU ext.
1363 strcasestr NEW: GNU ext.
1364 strtoimax NEW: ISO C 9x
1365 strtoumax NEW: ISO C 9x
1366 strverscmp NEW: GNU ext.
1367 svcauthdes_stats NEW: Secure RPC
1368 svcunix_create NEW: sunrpc etx
1369 svcunixfd_create NEW: sunrpc ext
1370 swapcontext NEW: Unix98
1371 tcgetsid NEW: Unix98 PTY
1372 tdestroy NEW: GNU ext.
1373 tgamma NEW: ISO C 9x
1374 tgammaf NEW: ISO C 9x
1375 tgammal NEW: ISO C 9x
1379 truncf NEW: ISO C 9x
1380 truncl NEW: ISO C 9x
1382 unlockpt NEW: Unix98 PTY
1383 updwtmpx NEW: Unix98
1384 user2netname NEW: Secure RPC
1385 utmpxname NEW: Unix98
1386 versionsort NEW: GNU ext.
1387 versionsort64 NEW: GNU ext.
1389 wcscasecmp NEW: GNU ext.
1390 wcsncasecmp NEW: GNU ext.
1391 wcsnlen NEW: GNU ext.
1392 wcstoimax NEW: ISO C 9x
1393 wcstoll NEW: ISO C 9x
1394 wcstoull NEW: ISO C 9x
1395 wcstoumax NEW: ISO C 9x
1397 wordexp NEW: POSIX.2
1398 wordfree NEW: POSIX.2
1399 write_profiling REMOVED
1400 xdecrypt NEW: Secure RPC
1401 xdr_authdes_cred NEW: Secure RPC
1402 xdr_authdes_verf NEW: Secure RPC
1403 xdr_cryptkeyarg NEW: Secure RPC
1404 xdr_cryptkeyarg2 NEW: Secure RPC
1405 xdr_cryptkeyres NEW: Secure RPC
1406 xdr_getcredres NEW: Secure RPC
1407 xdr_key_netstarg NEW: Secure RPC
1408 xdr_key_netstres NEW: Secure RPC
1409 xdr_keybuf NEW: Secure RPC
1410 xdr_keystatus NEW: Secure RPC
1411 xdr_netnamestr NEW: Secure RPC
1412 xdr_sizeof NEW: Secure RPC
1413 xdr_unixcred NEW: sunrpc ext
1414 xencrypt NEW: Secure RPC
1415 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1426 * inet_ntoa is thread-safe
1428 * updwtmp is moved from libutil to libc
1430 * rewrite of cbrt function
1432 * update of timezone data
1446 * add atoll function
1448 * fix complex problems in Berkeley DB code
1450 * fix math functions
1454 * fixed lots of header problems (especially Linux/GNU specific)
1456 * dynamic loader preserves all registers
1458 * Roland McGrath provided support for handling of auxiliary objects in
1459 the ELF dynamic loader.
1461 * support for parallel builds is improved
1465 * GNU extensions are no longer declared by default. To enable them you
1466 must define the macro `_GNU_SOURCE' in your program or compile with
1469 * The library has changed from using GNU ld symbol aliases to using weak
1470 symbols where available. The ELF object file format supports weak
1471 symbols; GNU ld also supports weak symbols in the a.out format. (There
1472 is also now support for other GNU ld extensions in ELF. Use the
1473 `--with-elf' option to configure to indicate you have ELF, and
1474 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1475 of many files which contained only symbol aliases, reducing the size of
1476 the source and the compiled library; many other files were renamed to
1477 less cryptic names previously occupied by the symbol alias files.
1478 There is a new header file <elf.h> for programs which operate on
1479 files in the ELF format.
1481 * Converted to Autoconf version 2, so `configure' has more options.
1482 Run `configure --help' to see the details.
1484 * The library can now be configured to build profiling, highly-optimized
1485 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1486 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1487 `configure' enable building these extra libraries. The shared library is
1488 built by default when using both ELF and GNU ld. When shared libraries
1489 are enabled, the new library `-ldl' is available for arbitrary run-time
1490 loading of shared objects; its interface is defined in <dlfcn.h>. The
1491 new header file <link.h> gives access to the internals of the run-time
1492 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1493 application of same name on other systems and it provides information
1494 about dynamically linked binaries.
1496 * The C library now provides the run-time support code for profiling
1497 executables compiled with `-pg'. Programs can control the profiling code
1498 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1499 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1500 the support for this file format was contributed by David Mosberger-Tang.
1502 * The math code has been replaced with a math library based on fdlibm from
1503 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1504 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1505 functions. The math functions now reside in a separate library, so
1506 programs using them will need to use `-lm' their linking commands.
1508 * John C. Bowman contributed optimized ix87 assembler inline functions.
1510 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1511 mechanism similar to that found in Solaris 2. This is now used for the
1512 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1513 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1514 file controls what services are used for each individual database. This
1515 works by loading shared libraries with names specified in `nsswitch.conf',
1516 so service modules can be changed or added at any time without even
1517 relinking any program. Currently there are the file, db, and NIS based
1518 NSS services available.
1520 * The new functions `strtoq' and `strtouq' parse integer values from
1521 strings, like `strtol' and `strtoul', but they return `long long int' and
1522 `unsigned long long int' values, respectively (64-bit quantities).
1524 * The new functions `strtof' and `strtold' parse floating-point values from
1525 strings, like `strtod', but they return `float' and `long double' values,
1526 respectively (on some machines `double' and `long double' are the same).
1528 * Ulrich Drepper has contributed new implementations of the floating-point
1529 printing and reading code used in the `printf' family of functions and
1530 `strtod', `strtof', and `strtold'. These new functions are perfectly
1531 accurate, and much faster than the old ones.
1533 * The implementation of the POSIX locale model was completely rewritten by
1534 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1535 to compile the POSIX locale definition.
1537 * The former dummy implementations of the strcoll and strxfrm function are
1538 now replaced by fully functional code contributed by Ulrich Drepper. The
1539 collation information comes from the POSIX locale definitions.
1541 * The new header <langinfo.h> defines an interface for accessing
1542 various locale-dependent data (using the locale chosen with `setlocale').
1544 * Ulrich Drepper has contributed a new suite of functions for operation on
1545 wide-character and multibyte-character strings, in <wchar.h>;
1546 and classification and case conversion of wide characters, in <wctype.h>.
1547 These new functions are conforming to the ISO C, Amendement 1 specification.
1549 * There is now a second implementation of the standard I/O library available.
1550 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1551 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1553 * You can now use positional parameter specifications in format strings
1554 for the `printf' and `scanf' families of functions. For example,
1555 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1556 ``Number 6, Mr Jones''. This is mainly useful when providing different
1557 format strings for different languages, whose grammars may dictate
1558 different orderings of the values being printed. To support this
1559 feature, the interface for `register_printf_handler' has changed; see
1560 the header file <printf.h> for details.
1562 * The `printf' and `scanf' families of functions now understand a new
1563 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1564 to group numbers as indicated by the locale; for `scanf' and friends, this
1565 says to accept as valid only a number with all the proper grouping
1566 separators in the right places. In the default "C" locale, numbers are
1567 not grouped; but locales for specific countries will define the usual
1568 conventions (i.e. separate thousands with `,' in the US locale).
1570 * The pgrp functions have been regularized, slightly incompatibly but much
1571 less confusingly. The core functions are now `getpgid' and `setpgid',
1572 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1573 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1574 provided for compatibility. There is no longer an incompatible `getpgrp'
1575 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1577 * The new header file <fts.h> and suite of functions simplify programs that
1578 operate on directory trees. This code comes from 4.4 BSD.
1580 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1581 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1582 NSS scheme used in glibc.
1584 * There is a new malloc debugging hook `__memalign_hook'.
1586 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1587 `unsigned int' in <sys/types.h>. These are for compatibility only and
1588 their use is discouraged.
1590 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1591 done differently, so that it works even without GNU ld.
1593 * New function `euidaccess' checks allowed access to a file like `access',
1594 but using the effective IDs instead of the real IDs.
1596 * The time zone data files have been updated for the latest and greatest
1597 local time conventions of the countries of the world.
1599 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1602 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1603 for formatting floating-point numbers. They are provided only for
1604 compatibility; new programs should use `sprintf' instead. There are
1605 also equivalent function for the `long double' floating-point type and
1606 all functions also exist in a reentrant form.
1608 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1609 functions for maintaining the login-record files (primarily of use to
1610 system programs such as `login'), and convenient functions for
1611 allocating and initializing a pseudo-terminal (pty) device.
1613 * Ulrich Drepper has contributed new support for System V style
1614 shared memory and IPC on systems that support it.
1616 * Ulrich Drepper has contributed several miscellaneous new functions found
1617 in System V: The `hsearch' family of functions provide an effective
1618 implementation of hash tables; `a64l' and `l64a' provide a very simple
1619 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1622 * Ulrich Drepper has contributed new reentrant counterparts for the
1623 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1625 * Ulrich Drepper has contributed new, highly-optimized versions of several
1626 string functions for the i486/Pentium family of processors.
1628 * Ulrich Drepper has updated the Linux-specific code, based largely
1629 on work done in Hongjiu Lu's version of GNU libc for Linux.
1630 The GNU library now supports Linux versions 2.0.10 and later,
1631 using the ELF object file format (i[3456]86-*-linux).
1633 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1635 * David Mosberger-Tang and Richard Henderson have ported the C library
1636 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1637 dynamic linking support for ELF/Alpha.
1639 * Richard Henderson contributed several Alpha optimized assembler function
1640 for arithmetic and string handling.
1642 * Ulrich Drepper has contributed a new set of message catalog functions to
1643 support multiple languages using the <libintl.h> interface, for use with
1644 his new package GNU gettext. Translation volunteers have contributed
1645 catalogs of the library's messages in Spanish, German, and Korean.
1647 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1648 program and the `catgets' function for reading the catalog files it
1649 creates. (The <libintl.h> interface is preferred; we include the
1650 <nl_types.h> interface using `catgets' only for source compatibility with
1651 programs already written to use it.)
1653 * New header file <values.h> gives SVID-compatible names for <limits.h>
1656 * Various new macros, declarations, and small header files for compatibility
1659 * New function `group_member' is a convenient way to check if a process has
1660 a given effective group ID.
1662 * When using GCC 2.7 and later, the socket functions are now declared in a
1663 special way so that passing an argument of type `struct sockaddr_in *',
1664 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1665 `struct sockaddr *' type, does not generate a type-clash warning.
1667 * New function `error' declared in header file <error.h> is a convenient
1668 function for printing error messages and optionally exiting; this is the
1669 canonical function used in GNU programs. The new functions `err', `warn',
1670 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1671 doing the same thing.
1673 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1674 POSIX.2 `glob' function to do ~ and {...} expansion.
1676 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1677 `clearenv' which is used in POSIX.9 is also available.
1679 * New function `getsid' returns session ID number on systems that support it.
1681 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1682 files <db.h> and <mpool.h> provide a rich set of functions for several
1683 types of simple databases stored in memory and in files, and <ndbm.h> is
1684 an old `ndbm'-compatible interface using the `db' functions. Link with
1685 `-ldb' to get these functions.
1687 * New macro `strdupa' copies a string like `strdup', but uses local stack
1688 space from `alloca' instead of dynamic heap space from `malloc'.
1690 * New function `strnlen' is like `strlen' but searches only a given maximum
1691 number of characters for the null terminator. `stpncpy', `strndup' and
1692 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1695 * New function `statfs' in header <sys/statfs.h>.
1697 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1698 provide convenient functions for operating on blocks of null-terminated
1701 * A new suite of functions in <utmp.h> handle all the details of reading
1702 and writing the utmp file.
1704 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1707 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1708 completely POSIX compliant and also implemented the extended functionality
1709 to handle alternate digit representation and alternate era date formats.
1711 * Ulrich Drepper provided an implementation of the `strptime' function
1712 defined in XPG4.2 which transforms a string into a `struct tm' value.
1714 * Paul Eggert provided the tzselect shell script as part of the timezone
1715 code. The shell script makes it easy to select the correct timezone
1718 * The implementation of the malloc family of functions is completely replaced
1719 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1720 The implementation uses the mmap function (if available) and it is
1721 optimized for the use in multi threaded programs.
1723 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1724 functions. This new functionality is usable by specifying a special
1725 salt string and it is compatible with implementation on *BSD systems.
1727 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1728 `getsubopt' to handle second level command line options, `bsd_signal'
1729 to access BSD style `signal' functionality, the obsolete `regexp' style
1732 * the `lchown' function is available on system which support this
1735 * The implementation of the shadow password handling function was contributed
1738 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1740 * POSIX.1g support was added. The <sys/select.h> header is available,
1741 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1742 implementation of `getaddrinfo'.
1746 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1748 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1749 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1751 * The new function `daemon' from 4.4 BSD is useful for server programs that
1752 want to put themselves in the background.
1754 * Joel Sherrill has contributed support for several standalone boards that
1755 run without an operating system.
1757 * `printf', `scanf' and friends now accept a `q' type modifier for long
1758 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1760 * All of the code taken from BSD (notably most of the math and networking
1761 routines) has been updated from the BSD 4.4-Lite release.
1763 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1765 * The new functions `getdomainname' and `setdomainname' fetch or change the
1766 YP/NIS domain name. These are system calls which exist on systems which
1769 * The time zone data files have been updated for the latest international
1772 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1773 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1777 * The C library now includes support for Sun RPC, from Sun's free
1778 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1779 are included. (There is still no support for YP.)
1781 * Tom Quinn has contributed a port of the C library to SGI machines running
1782 Irix 4 (mips-sgi-irix4).
1784 * The new `lockf' function is a simplified interface to the locking
1785 facilities of `fcntl', included for compatibility.
1787 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1789 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1791 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1794 * The error message printed by `assert' for a failed assertion now includes
1795 the name of the program (if using GNU ld) and the name of the calling
1796 function (with versions of GCC that support this).
1798 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1800 * The library now includes the <sys/mman.h> header file and memory
1801 management functions `mmap', `munmap', `mprotect', `msync', and
1802 `madvise', on systems that support those facilities.
1804 * The interface for `mcheck' has changed slightly: the function called to
1805 abort the program when an allocation inconsistency is detected now takes
1806 an argument that indicates the type of failure. The new function
1807 `mprobe' lets you request a consistency check for a particular block at
1808 any time (checks are normally done only when you call `free' or `realloc'
1811 * It is now possible to easily cross-compile the C library, building on one
1812 system a library to run on another machine and/or operating system. All
1813 you need to do is set the variable `HOST_CC' in `configparms' to the
1814 native compiler for programs to run on the machine you are building on (a
1815 few generator programs are used on Unix systems); set `CC' to the
1818 * The new function `fexecve' (only implemented on the GNU system) executes
1819 a program file given a file descriptor already open on the file.
1823 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1824 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1826 * You can set the variable `libprefix' in `configparms' to specify a prefix
1827 to be prepended to installed library files; this makes it easy to install
1828 the GNU C library to be linked as `-lgnuc' or whatever.
1830 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1831 copies a limited number of characters from a string, and returns the
1832 address of the last character written.
1834 * You no longer need to check for whether the installed `stddef.h' is
1835 compatible with the GNU C library. configure now checks for you.
1837 * You can now define a per-stream `fileno' function to convert the
1838 stream's cookie into an integral file descriptor.
1840 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1841 allocates zero bytes of storage, and returns a unique pointer which
1842 you can pass to `realloc' or `free'. The behavior is undefined if
1843 you dereference this pointer.
1845 * The C library now runs on Sony NEWS m68k machines running either
1846 NewsOS 3 or NewsOS 4.
1848 * The new `syscall' function is a system-dependent primitive function
1849 for invoking system calls. It has the canonical behavior on Unix
1850 systems, including unreliable return values for some calls (such as
1851 `pipe', `fork' and `getppid').
1853 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1854 to `EAGAIN', which is the preferred name. On systems whose kernels
1855 use two distinct codes, the C library now translates EWOULDBLOCK to
1856 EAGAIN in every system call function.
1860 * The GNU C Library Reference Manual is now distributed with the library.
1861 `make dvi' will produce a DVI file of the printed manual.
1862 `make info' will produce Info files that you can read on line using C-h i
1863 in Emacs or the `info' program.
1864 Please send comments on the manual to bug-glibc-manual@gnu.org.
1866 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1868 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1870 * Jason Merrill has contributed a port to the Sequent Symmetry running
1871 Dynix version 3 (i386-sequent-dynix).
1873 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1874 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1876 * New function `memory_warnings' lets you arrange to get warnings when
1877 malloc is running out of memory to allocate, like Emacs gives you.
1879 * The C library now contains the relocating allocator used in Emacs 19 for
1880 its editing buffers. This allocator (ralloc) minimizes allocation
1881 overhead and fragmentation by moving allocated regions around whenever it
1882 needs to. You always refer to a ralloc'd region with a "handle" (a
1883 pointer to a pointer--an object of type `void **').
1885 * There is a new `printf' format: `%m' gives you the string corresponding
1886 to the error code in `errno'.
1888 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1889 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1890 pass, the `a' modifier says to fill in a `char **' you pass with a
1893 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1894 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1895 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1897 * `mkstemp' is a traditional Unix function to atomically create and open a
1898 uniquely-named temporary file.
1902 * The standard location for the file that says what the local timezone is
1903 has changed again. It is now `/usr/local/etc/localtime' (or more
1904 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1906 * The distribution no longer contains any files with names longer than 14
1909 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1910 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1912 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1916 * The configuration process has changed quite a bit. The `configure'
1917 script is now used just like the configuration scripts for other GNU
1918 packages. The `sysdeps' directory hierarchy is much rearranged.
1919 The file `INSTALL' explains the new scheme in detail.
1921 * The header files no longer need to be processed into ANSI C and
1922 traditional C versions. There is just one set of files to install, and
1923 it will work with ANSI or old C compilers (including `gcc -traditional').
1925 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1926 MIPS DECStation running Ultrix 4.
1928 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1929 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1930 made itself into a shared library.
1932 * Yet further improved support for the i386, running 4.3 BSD-like systems
1933 (such as Mach 3 with the Unix single-server), or System V.
1935 * New function `strncasecmp' to do case-insensitive string comparison
1936 with limited length.
1938 * New function `strsep' is a reentrant alternative to `strtok'.
1940 * New functions `scandir' and `alphasort' for searching directories.
1942 * New function `setenv' is a better interface to `putenv'.
1944 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1945 function for traversing a directory tree.
1947 * The GNU obstack package is now also part of the C library.
1948 The new function `open_obstack_stream' creates a stdio stream that
1949 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1950 formatted output directly to an obstack.
1952 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1953 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1955 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1957 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1958 things to your strings.
1960 * There are some new test programs: test-fseek, testmb, and testrand.
1962 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1963 These ports are not finished, but are a good starting place for really
1964 supporting those systems.
1966 * `/etc/localtime' is now the standard location for the file that says what
1967 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1968 This follows the general principle that `/etc' is the place for all local
1969 configuration files.
1971 * The C library header files now use `extern "C"' when used by the C++
1972 compiler, so the C library should now work with C++ code.
1974 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1975 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1978 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1979 function which uses the `merge sort' algorithm, and is said to be
1980 significantly faster than the old GNU `qsort' function. Merge sort is
1981 now the standard `qsort' function. The new algorithm can require a lot
1982 of temporary storage; so, the old sorting function is called when the
1983 required storage is not available.
1985 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1986 provides the Unix `crypt' function, plus some other entry points.
1988 * The code and header files taken from 4.4 BSD have been updated with the
1989 latest files released from Berkeley.
1991 ----------------------------------------------------------------------
1992 Copyright information:
1994 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
1996 Permission is granted to anyone to make or distribute verbatim copies
1997 of this document as received, in any medium, provided that the
1998 copyright notice and this permission notice are preserved,
1999 thus giving the recipient permission to redistribute in turn.
2001 Permission is granted to distribute modified versions
2002 of this document, or of portions of it,
2003 under the above conditions, provided also that they
2004 carry prominent notices stating who last changed them.
2007 version-control: never