1 GNU C Library NEWS -- history of user-visible changes. 2011-10-7
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, 11589, 12403, 12847, 12868, 12852, 12874, 12885, 12907, 12922,
13 12935, 13007, 13021, 13067, 13068, 13090, 13092, 13114, 13118, 13123,
16 * New program pldd to list loaded object of a process
17 Implemented by Ulrich Drepper.
19 * Add nss_db support back to glibc. No more dependency on Berkeley db
20 and support for initgroups lookups.
21 Implemented by Ulrich Drepper.
23 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
26 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
29 * Optimized strcat and strncat on x86-64 and optimized wcscmp on x86-32 and
31 Contributed by Liubov Dmitrieva.
33 * Optimized strchr and strrchr for SSE on x86-32.
34 Contributed by Liubov Dmitrieva.
36 * New interfaces: scandirat, scandirat64
37 Implemented by Ulrich Drepper.
39 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
40 Implemented by Ulrich Drepper.
42 * nscd now also caches the netgroup database.
43 Implemented by Ulrich Drepper.
47 * The following bugs are resolved with this release:
49 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
50 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
51 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
52 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
53 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
54 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
55 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
56 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
57 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
58 12795, 12811, 12813, 12814, 12841
60 * The RPC implementation in libc is obsoleted. Old programs keep working
61 but new programs cannot be linked with the routines in libc anymore.
62 Programs in need of RPC functionality must be linked against TI-RPC.
63 The TI-RPC implementation is IPv6 enabled and there are other benefits.
65 Visible changes of this change include (obviously) the inability to link
66 programs using RPC functions without referencing the TI-RPC library and the
67 removal of the RPC headers from the glibc headers.
68 Implemented by Ulrich Drepper.
70 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
71 syncfs, setns, sendmmsg
73 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
74 yue_HK, lij_IT, mhr_RU
76 * New encodings: CP770, CP771, CP772, CP773, CP774
78 * New program sotruss to trace calls through PLTs
79 Implemented by Ulrich Drepper.
81 * The malloc hook implementation is marked deprecated and will be removed
82 from the default implementation in the next version. The design never
83 worked ever since the introduction of threads. Even programs which do
84 not create threads themselves can use multiple threads created internally.
88 * The following bugs are resolved with this release:
90 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
91 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
92 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
93 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
96 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
98 * POWER7 optimizations: memset, memcmp, strncmp
100 * New optimized string functions for x86-64: strnlen (SSE2),
101 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
102 Implemented by Ulrich Drepper.
106 * The following bugs are resolved with this release:
108 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
109 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
110 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
111 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
112 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
113 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
114 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
115 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
117 * New interfaces: pthread_getname_np, pthread_setname_np
119 * New Linux interface: recvmmsg
121 * STT_GNU_IFUNC implemented for Sparc by David Miller.
123 * The dynamic linker now recognizes supported ABI versions from the
124 EI_ABIVERSION field in the ELF header.
125 Implemented by Ulrich Drepper.
127 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
128 will not be used to fill in password fields in the passwd.byname replies.
129 Instead it is used to synthesize the shadow.byname table, should it be
130 missing. This is a useful mode in some installations involving Solaris.
131 Implemented by Ulrich Drepper.
133 * New locales: kok_IN, sq_MK, cv_RU
137 * The following bugs are resolved with this release:
139 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
140 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
141 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
142 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
143 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
144 10789, 10817, 10823, 10840, 10847
146 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
148 Implemented by Ulrich Drepper.
150 * Checking version of longjmp added that fails if an uninitialized stack
151 frame would be created. Implemented by Ulrich Drepper.
153 * STT_GNU_IFUNC is now supported in static executables.
154 Implemented by H.J. Lu.
156 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
158 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
159 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
160 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
161 Contributed by H.J. Lu.
163 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
164 Implemented by Ulrich Drepper.
166 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
168 Contributed by H.J. Lu.
170 * Support for fma instruction in AVX on x86-64.
171 Implemented by H.J. Lu and Ulrich Drepper.
173 * AVX support in x86-64 auditing support in ld.so.
174 Implemented by H.J. Lu.
176 * STB_GNU_UNIQUE support added.
177 Implemented by Ulrich Drepper.
179 * Implement second fallback mode for optimized DNS lookup for even more
180 broken environments. If two requests from the same port are not
181 handled correctly close the socket and open a new one before sending
182 the second request. The 'single-request-reopen' option in /etc/resolv.conf
183 can be used to select this mode right away, instead of rediscovering the
184 necessity is every process again.
185 Implemented by Ulrich Drepper.
187 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
188 Implemented by Adam Tkac.
190 * Optimized iconv conversions for S390x.
191 Implemented by Andreas Krebbel.
193 * Using condvars with PI mutexes is now more efficient due to kernel
194 support for requeueing to PI futexes. NPTL support added for x86-64.
195 Implemented by Ulrich Drepper.
197 * New locales: ps_AF, my_MM
201 * The following bugs are resolved with this release:
203 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
204 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
205 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
206 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
207 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
209 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
210 Implemented by Ulrich Drepper.
212 * New Linux interfaces: accept4, fallocate, fallocate64.
213 Implemented by Ulrich Drepper.
215 * Correct declarations of string function when used in C++ code. This
216 could lead to compile errors for invalid C++ code.
218 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
221 * New POSIX 2008 interface: psiginfo
222 Implemented by Ulrich Drepper.
224 * New ISO C++1x interfaces: quick_exit, at_quick_exit
225 Implemented by Ulrich Drepper.
227 * Support for selecting between multiple function definitions at runtime
228 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
230 * The libcrypt library can now use the hash function implementations in
231 NSS. Implemented by Ulrich Drepper.
233 * The malloc implementation can be compiled to be less memory efficient
234 but higher performing in multi-threaded programs.
235 Implemented by Ulrich Drepper.
237 * New locales: nan_TW@latin, ks_IN
239 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
240 Implemented by Ulrich Drepper.
242 * Extended printf hook support. It is possible to use user-defined types
243 and extend existing format specifiers.
244 Implemented by Ulrich Drepper.
246 * Handling for group shadow files has been added.
247 Implemented by Ulrich Drepper.
249 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
250 servers (the case, e.g., for some people using the built-in DNS
251 server in ADSL modems/routers). There is a once-per-process timeout
252 in case of a broken server. To avoid it, users can run nscd or put
253 'options single-request' in /etc/resolv.conf.
254 Implemented by Ulrich Drepper.
258 * The following bugs are resolved with this release:
260 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
261 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
262 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
263 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
264 6968, 6974, 6980, 6995, 7008, 7009, 7029
266 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
267 up at the same time. Implemented by Ulrich Drepper.
269 * TLS descriptors for LD and GD on x86 and x86-64.
270 Implemented by Alexandre Oliva.
272 * getaddrinfo now handles DCCP and UDPlite.
273 Implemented by Ulrich Drepper.
275 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
276 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
277 Implemented by Ulrich Drepper.
279 * New implementation of memmem, strstr, and strcasestr which is O(n).
280 Implemented by Eric Blake.
282 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
284 * Implement "e" option for popen to open file descriptor with the
285 close-on-exec flag set. Implemented by Ulrich Drepper.
287 * Implement "b" mode for fmemopen. In this mode writes writes don't
288 implicitly add a NUL byte and seeks from the end of the buffer really
289 use the buffer end, not the string length as the basis.
290 Implemented by Ulrich Drepper.
292 * Many functions, exported and internal, now atomically set the close-on-exec
293 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
295 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
297 Implemented by Pravin Satpute.
299 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
303 * The following bugs are resolved with this release:
305 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
306 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
307 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
308 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
309 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
310 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
311 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
313 * New locales: bo_CN, bo_IN, shs_CA.
315 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
317 * Sorting rules for some Indian languages (Devanagari and Gujarati).
318 Implemented by Pravin Satpute.
320 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
322 * nscd caches now all timeouts for DNS entries
323 Implemented by Ulrich Drepper.
325 * nscd is more efficient and wakes up less often.
326 Implemented by Ulrich Drepper.
328 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
329 vdprintf, and obstack_vprintf.
330 Implemented by Jakub Jelinek.
332 * Faster memset for x86-64.
333 Implemented by Harsha Jagasia and H.J. Lu.
335 * Faster memcpy on x86.
336 Implemented by Ulrich Drepper.
338 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
339 Implemented by Ulrich Drepper.
341 * Faster sqrt and sqrtf implemention for some PPC variants.
342 Implemented by Stephen Munroe.
346 * The following bugs are resolved with this release:
348 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
349 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
350 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
351 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
352 5071, 5103, 5104, 5112, 5113, 5184, 5186
354 * More checking functions: fread, fread_unlocked, open*, mq_open.
355 Implemented by Jakub Jelinek and Ulrich Drepper.
357 * Extend fortification to C++. Implemented by Jakub Jelinek.
359 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
360 by not recognizing 'a' as a modifier when those specs are requested.
361 Implemented by Jakub Jelinek.
363 * PPC optimizations to math and string functions.
364 Implemented by Steven Munroe.
366 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
367 options to be passed. Implemented by Ulrich Drepper.
369 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
371 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
372 Implemented by Ulrich Drepper.
374 * Handle private futexes in the NPTL implementation.
375 Implemented by Jakub Jelinek and Ulrich Drepper.
377 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
378 Implemented by Roland McGrath and Ulrich Drepper.
380 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
382 * SHA-256 and SHA-512 based password encryption.
383 Implemented by Ulrich Drepper.
385 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
386 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
389 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
390 Implemented by Ulrich Drepper.
394 * The following bugs are resolved with this release:
396 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
397 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
398 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
399 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
400 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
401 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
402 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
405 * New Linux interfaces: epoll_pwait, sched_getcpu.
407 * New generic interfaces: strerror_l.
409 * nscd can now cache the services database. Implemented by Ulrich Drepper.
413 * The following bugs are resolved with this release:
415 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
416 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
417 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
418 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
419 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
420 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
421 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
422 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
423 3225, 3251, 3252, 3253, 3273
425 * For Linux, the sorting of addresses returned by getaddrinfo now also
426 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
427 Implemented by Ulrich Drepper.
429 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
430 Implemented by Ulrich Drepper.
432 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
434 * New iconv module for MIK. Contributed by Alexander Shopov.
436 * For sites with broken group and/or passwd database, the auto-propagate
437 option of nscd can prevent creating ID lookup entries from the results
438 of a name lookup and vice versa. This usually is no problem but some
439 site might have problems with the default behavior.
440 Implemented by Ulrich Drepper.
442 * Iterating over entire database in NIS can be slow. With the
443 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
444 to trade time for memory. The entire database will be read at once.
445 Implemented by Ulrich Drepper.
447 * The interfaces introduced in RFC 3542 have been implemented by
450 * Support for the new ELF hash table format was added by Ulrich Drepper.
452 * Support for priority inheritance mutexes added by Jakub Jelinek and
455 * Support for priority protected mutexes added by Jakub Jelinek.
457 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
458 or_IN, csb_PL, fy_NL, sr_ME.
462 * More overflow detection functions.
464 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
465 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
467 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
468 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
469 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
470 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
471 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
472 by Masahide Washizawa.
474 * It is now possible to install audit libraries for the dynamic linker using
475 LD_AUDIT. Implemented by Ulrich Drepper.
477 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
478 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
479 For a libc and libpthread that works well on Linux 2.4 kernels, we
480 recommend using the stable 2.3 branch.
482 * The new function open_wmemstream acts like open_memstream,
483 but uses a wchar_t wide character buffer.
485 * The new function ppoll is an improved version of poll, similar to pselect.
487 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
488 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
489 renameat, unlinkat, linkat, symlinkat, readlinkat.
491 * New Linux kernel system calls: unshare,
492 inotify_init, inotify_add_watch, inotify_rm_watch.
494 * The euidaccess function is now also known by the alias eaccess,
495 for compatibility with some other systems.
497 * Timezone data updated to 2006b version.
501 * The following bugs are resolved with this release:
503 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
504 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
505 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
506 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
507 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
508 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
510 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
512 * As of this release, GCC 4 can be used to compile the C Library.
514 * Timezone data updated to 2005m version.
518 * The following bugs are resolved with this release:
520 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
521 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
522 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
523 777, 787, 821, 822, 823, 825
525 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
529 * Support for RFC 3678. Real implementations exist only for Linux so far.
530 Implemented by Ulrich Drepper.
532 * nscd can now cache entries persistently. Expiring entries are reloaded.
533 For speedups the cache can be shared in memory with client processes.
534 Implemented by Ulrich Drepper.
536 * nscd can now perform SELinux checks.
537 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
539 * getaddrinfo queries are now cached. Canonical name lookup is performed
541 Implemented by Ulrich Drepper.
543 * The nothrow function attribute is used when headers are used by gcc when
544 compiling C code. This can avoid significant amounts of exception
547 * The malloc functions perform more error checking and are stricter when
548 it comes to reacting on errors. The default action is to terminate
549 the process after showing an error message. Implemented by Ulrich Drepper.
551 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
552 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
554 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
555 namespaces using the new function dlmopen(). This feature is of course,
556 like most other dynamic loading functionality, not available in statically
557 linked applications. Implemented by Ulrich Drepper.
559 * Low-overhead boundary checking variants of string and some stdio functions
560 were added. These are to be used in conjunction with a gcc patch by
561 Jakub Jelinek which adds calls to these functions if possible.
562 Implemented by Jakub Jelinek and Ulrich Drepper.
564 * Old code for several operating systems and machine architectures that
565 have not been in working condition in a long time have been removed from
566 the main source tree maintained by the GNU C Library's maintainers.
567 These files are now reside in the separate `ports' source module
568 that is usable as an add-on when building the library.
572 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
573 interrogate the dynamic linker, compatible with the Solaris interface.
575 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
576 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
578 * getifaddrs now uses the netlink interface on Linux to get its information.
579 Implemented by Thorsten Kukuk.
581 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
582 Implemented by Ulrich Drepper.
584 * support for non-executable stacks on x86 has been added. Changes mostly
587 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
590 * getaddrinfo now performs destination address selection according to
595 * Thread-safe interfaces for many functions that access locale data
596 were added in version 2.3, but these features were omitted from NEWS.
597 Many functions have variants with an `_l' suffix that take a `locale_t'
598 object as a parameter rather than consulting the current locale.
599 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
600 create and maintain `locale_t' objects. Additionally, the new function
601 `uselocale' sets "the current locale" (as used by functions not so
602 parameterized) set for an individual thread. These features were added
603 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
605 * The functions getresuid, getresgid, setresuid, and setresgid, which
606 have long been available on Linux, are now declared in <unistd.h>
607 and are now also available on the Hurd.
609 * ELF thread-local storage support (TLS) now works on x86-64.
611 * The new dynamic string token $LIB is expanded in shared library names.
612 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
614 * Aldy Hernandez contributed complete software floating point support for
615 PowerPC machines with no FPU.
617 * fexecve is implemented on Linux.
619 * The `btowc' function should work at least twice as fast due to
620 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
622 * With approriate thread add-ons cancelable functions are now implemented
623 in libc.so as well. No need to call the function in libpthread. This
624 change allowed to finally disable the incorrect and expensive handling
625 of weak definition in ld.so.
627 * Yet more PLT entries in libc.so have been removed. We finally arrived
628 at the bare minimum. Startup times improved appropriately.
630 * Support for the new Linux/x86 system call interface was added. The
631 AT_SYSINFO auxiliary vector entry is recognized and handled.
635 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
638 * iconv (the program and the interface) now accepts empty names (excluding
639 options like //TRANSLIT) to mean "use charset of current locale".
641 * localedef can now transliterate characters in strings which are not in
642 the provided charmap. The information from the input locale is used.
644 * Prelinking support was added for ELF targets. This requires additional
645 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
647 * Read-only stdio streams now use mmap to speed up operation by eliminating
648 copying and buffer underflows. To use add 'm' to the mode string of
649 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
651 * The malloc functions were completely rewritten by Wolfram Gloger based
652 on Doug Lea's malloc-2.7.0.c.
654 * Isamu Hasegawa contributed a completely new and POSIX-conformant
655 implementation of regex.
657 * Bruno Haible upgraded the iconv and locale implementation to support
660 * Contents of the LC_* and LANG environment variables in the CEN style are
661 not recognized anymore. It never was used. Change by Ulrich Drepper.
663 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
664 thread-local storage (TLS) ABI on some platforms.
665 Changes by Ulrich Drepper. SH support by Kaz Kojima.
667 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
668 EUC-JISX0213, and TSCII.
670 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
671 BSD-compatible interface for getting all network interface addresses.
672 Implementation for IPv4 by Roland McGrath.
674 * Loading of locale data is faster due to the introduction of a locale
675 archive. Implemented by Roland McGrath and Ulrich Drepper.
677 * Startup times are significantly reduced by not using exported functions
678 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
681 * Steven Munroe contributed a port to PowerPC64/Linux.
685 * The Hurd now uses the GNU libio implementation of stdio rather than the
686 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
688 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
689 with the same behavior as the Linux system call of the same name.
693 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
694 128-bit long double format.
696 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
697 IBM1161, and IBM1162 charsets.
699 * Andreas Jaeger contributed a port to x86-64/Linux.
701 * Peter Bruin contributed a port to PowerPC/Hurd.
703 * libc functions using I/O streams now can handle wide-oriented streams
706 * optimizations in the dynamic linker. Binaries created by recent binutils
707 versions start up quicker due to reduced time spent on relocations.
709 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
713 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
714 asinh, atanh, j0 for the 128-bit long double format.
716 * Bruno Haible updated all the code handling Unicode in some form to
719 * Speed of regex for single-byte locales is back to previous levels.
720 Patch by Isamu Hasegawa.
722 * Alpha, SPARC, and IA-64 now also using floating stacks.
724 * Startup time of internationalized applications greatly improved through
725 iconv cache. Use iconvconfig to generate the cache file.
726 Contributed by Ulrich Drepper.
728 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
729 severe performance problems. Patch by David Mosberger.
731 * The Hurd port got a lot more functionality like AIO, various stdio
732 extensions, etc. Mainly done by Roland McGrath.
734 * mtrace can now lookup symbols in shared libraries.
738 * Intel's IA-64 math library is largely integrated. It provides fast and
739 accurate implementatations for most basic and standard math functions
740 in float, double, and long double format.
742 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
743 and asin for the 96-bit long double format and asin, log, tan for the
744 128-bit long double format.
746 * The beginning of a last-bit accurate math library by IBM Haifa were added.
747 The basic double functions exist today. Contributed by Abraham Ziv
748 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
749 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
751 * An asynchronous name lookup library was added. The interface is designed
752 after POSIX AIO. The proposal was circulated beforehand to get comments.
753 No negative ones came in. Implemented by Ulrich Drepper.
755 * Port to S390/64bit contributed by Martin Schwidefsky
756 <schwidefsky@de.ibm.com>.
758 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
759 of functions for Linux/IA-64.
761 * The RPC code is now thread safe. Threads can now use the same service
762 of different services at the same time. Patch by Eric Norum
763 <eric.norum@usask.ca> with some help by Ulrich Drepper.
765 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
766 family of functions for Linux/S390.
768 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
769 of functions for Linux/x86.
771 * Port to Linux/CRIS contributed by Axis Communications.
775 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
776 we can now check for namespace violations and missing declarations. The
777 result is that almost all headers are now Unix-compliant (as defined in
778 the upcoming XPG6). The negative side is that some programs might need
779 corrections, too, if they depend on the incorrect form of the headers in
780 previous versions which defined too many symbols and included too many
783 * regex now handles multibyte character sets correctly.
784 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
786 * iconv (the program) does now conform to the upcoming XPG6 and handles
787 charmaps. Instead of the charset names the path of charmaps can be
788 provided and the conversion happens based on this data.
789 Contributed by Ulrich Drepper.
791 * The locale program now provides detailed information about the installed
796 only lists the names of the supported locales
800 provides details such as country, language, and codeset name.
801 Contributed by Ulrich Drepper.
805 * The gencat program now parses the input file according to the charset
806 selected by the LC_CTYPE category. This is important for stateful
807 character sets. To make generating catalogs easier there is a way
808 to overwrite the charset selected by the locale: before the first
809 message or $ quote line the catalog can contain a line like
813 to select the charset (ISO-8859-2 in this case).
815 Implemented by Shinya Hanataka and Ulrich Drepper.
817 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
818 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
819 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
821 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
822 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
824 * The LANGUAGE environment variable is now ignored unless the locale is
825 changed from the default "C" locale.
827 * The usual bug fixes.
831 * Greg McGary added runtime support for bounds checking using gcc's
832 new -fbounded-pointers option. ix86 target is complete. PowerPC
835 * Thorsten Kukuk added secure mode support to nscd.
837 * The Berkeley db libraries have been removed.
839 Related, the nss_db module is now in a separate package since it
840 obviously requires a database library being available.
842 * Wide character I/O streams implemented by Ulrich Drepper.
844 * Functions from the extended socket API added by Ulrich Drepper.
846 * Functions feenableexcept and fedisableexcept to control the
847 behaviour of individual exceptions have been added by Andreas Jaeger.
849 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
851 * The resolver code has been updated from bind 8.2.3-T5B which supports
852 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
855 This change could in some situations effect backward compatibility. Since
856 now `_res' is a thread-local instead of a global variable, modifying it
857 in one thread does not have any effect in other threads.
859 The resolver library was also extended to allow IPv6 as the transport
860 protocol for the requests. This work was done by Stig Venaas.
862 * Compatibility code for K&R C compilers has been removed from the
863 header files. A ISO C compiler is needed to use the library
864 (conforming to either C89 or C99 standard).
866 * Complete rewrite of the localedef program to support multibyte character
867 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
868 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
869 Implemented by Ulrich Drepper.
871 Bruno Haible significantly improved the generation and use of the data
872 structures for the wide character tables.
874 * Plural handling in gettext implemented by Ulrich Drepper.
876 * The utmp daemon has been removed.
878 * The port to MIPS-Linux has been finished by Andreas Jaeger.
880 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
883 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
885 * POSIX barriers implemented by Kaz Kylheku.
887 * POSIX spawn function family implemented by Ulrich Drepper.
889 * POSIX spinlocks are now available.
891 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
893 * the configure option --enable-kernel=X.Y.Z allows to strip out
894 compatibility for kernel versions before X.Y.Z. This is currently only
895 implemented for Linux.
897 * the sockaddr_in6 structure changed. The IPv6 working group added a new
898 field sin6_scope_id. This means that all programs using IPv6 should be
899 recompiled. Don't expect binary compatibility with previous glibc
902 * various conversion modules for IBM character sets contributed by
905 * IA-64 port by Jes Sorensen and HJ Lu.
907 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
908 Compiling the GNU C Library for Linux/ia64
909 ******************************************
911 Please refer to the file INSTALL in the same directory as you found
912 this file for general information about configuring and compiling
915 For general inquiries about glibc under Linux/ia64 please use the
916 following mailing list linux-ia64@linuxia64.org or one of the relevant
919 Recommended Tools for Compilation
920 =================================
922 In order for glibc-2.2 to build correctly on the ia64 you need at
923 least the following versions of the GNU tools (the :
925 * The Cygnus toolchain snapshot for the ia64 as of August 4
926 including the provided set of patches. It is however recommend
927 you use the October 24 toolchain snapshot or a more recent version.
929 OR alternatively you can try the following (the Cygnus toolchain is
930 the recommended solution):
932 * GCC and binutils, GAS and GNU LD out of CVS from
933 sources.redhat.com as of August 28, 2000 or later. The CVS tree
934 may require special patches to work properly on the ia64.
936 Configuring and compiling GNU Libc for Linux/ia64
937 =================================================
939 The library requires Linux kernel version 2.4.0-test4-000728 or
940 later to funtion properly. Besides that it support for debug libraries
941 is currently untested. Hence the following options
942 are required for configuring the library:
944 --disable-debug --enable-kernel=2.4.0
946 It is also important that you make sure the library picks up the
947 appropriate kernel header files, if you do not have recent enough
948 kernel headers in /usr/src/linux/include, you should use the
949 --with-headers=<path> option to specify the location.
951 As an example I personally use the following options to configure
956 --enable-kernel=2.4.0
960 --with-headers=/home/jes/linux/include
965 Jes Sorensen <jes@linuxcare.com>,
967 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
981 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
983 * New xdr functions are added; some rpc functions are now 64bit clean.
985 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
987 * Fixed known incompatibilities with glibc 2.0.
989 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
991 * Optimized a number of functions (especially the ELF dynamic loader).
993 * Update timezone data files.
995 * lots of charmaps corrections
997 * some new locale definitions and charmaps
1002 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1003 conform to POSIX member type requirements. Symbol versions have been
1004 adjusted as needed within the library, and for direct use by applications,
1005 but there is potential for problems if third-party libraries use
1006 struct timeval as part of their interface. This does not present
1007 a problem for X and other "essential" system libraries.
1009 * An additional locale model to support C++ Standard Library locale
1010 model and probably more was implemented by Ulrich Drepper.
1012 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1015 * Miles Bader provided the `argp' function family to support hierachical
1016 command line argument parsing, layered on top of getopt.
1018 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1020 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1023 * scanf recognizes the %a and %A format for scanning floating point numbers.
1025 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1026 information and interfaces for the available integer types.
1028 * about 130 new math functions were added to implement the ISO C9x math
1031 * the new header <complex.h> contains definitions of the complex math
1032 functions from ISO C 9X.
1034 * the new header <tgmath.h> defines generic macros to use complex or
1035 real valued functions.
1037 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1039 * Andreas Jaeger provided a test suite for the math library.
1041 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1043 * Ulrich Drepper added character set conversion functions (iconv).
1045 * Optimized string functions have been added.
1047 * The localedata addon is now part of glibc.
1049 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1051 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1052 daemon for NSS (nscd).
1054 Missing a better place here are some numbers on improvements. Under
1055 Linux 2.1.125 un-tar-ing the kernel sources takes
1059 using local files 12.19s 6.88s 22.91s
1061 using NIS 13.92s 8.91s 26.34s
1063 using NIS & nscd 10.37s 7.34s 25.30s
1065 using NIS+ 27.57s 30.37s 640.46s
1067 using NIS+ & nscd 10.25s 7.83s 26.51s
1069 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1071 Keep in mind that non-namelookup related operations dominate above times.
1072 It was just a common complain that using NIS+ unpacking the kernel is
1075 [1] The old nscd implementation is not available anymore since it was
1076 distributed with glibc up to version 2.0.98 and thus is now replaced.
1078 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1080 * Mark Kettenis provided a Hesiod NSS module.
1082 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1083 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1085 * rcmd can now handle netgroups (Dick Streefland).
1087 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1090 * Support for the IPv6 protocol has been added to the socket API, as per the
1091 latest draft standards.
1093 * Support for Linux 2.2 has been added.
1095 * Interface changes relative to the latest 2.0.x release:
1096 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1097 addseverity NEW: Unix98
1098 alphasort64 NEW: LFS
1099 argp_err_exit_status NEW: argp, GNU ext
1100 argp_error NEW: argp, GNU ext
1101 argp_failure NEW: argp, GNU ext
1102 argp_help NEW: argp, GNU ext
1103 argp_parse NEW: argp, GNU ext
1104 argp_program_bug_address NEW: argp, GNU ext
1105 argp_program_version NEW: argp, GNU ext
1106 argp_program_version_hook NEW: argp, GNU ext
1107 argp_state_help NEW: argp, GNU ext
1108 argp_usage NEW: argp, GNU ext
1109 authdes_create NEW: Secure RPC
1110 authdes_getucred NEW: Secure RPC
1111 authdes_pk_create NEW: Secure RPC
1112 backtrace NEW: GNU ext.
1113 backtrace_symbols NEW: GNU ext.
1114 backtrace_symbols_fd NEW: GNU ext.
1116 cacosf NEW: ISO C 9x
1117 cacosh NEW: ISO C 9x
1118 cacoshf NEW: ISO C 9x
1119 cacoshl NEW: ISO C 9x
1120 cacosl NEW: ISO C 9x
1127 casinf NEW: ISO C 9x
1128 casinh NEW: ISO C 9x
1129 casinhf NEW: ISO C 9x
1130 casinhl NEW: ISO C 9x
1131 casinl NEW: ISO C 9x
1133 catanf NEW: ISO C 9x
1134 catanh NEW: ISO C 9x
1135 catanhf NEW: ISO C 9x
1136 catanhl NEW: ISO C 9x
1137 catanl NEW: ISO C 9x
1138 cbc_crypt NEW: Secure RPC
1142 ccoshf NEW: ISO C 9x
1143 ccoshl NEW: ISO C 9x
1149 cimagf NEW: ISO C 9x
1150 cimagl NEW: ISO C 9x
1151 clearerr_locked REMOVED
1152 clntunix_create NEW: sunrpc ext
1154 clog10 NEW: ISO C 9x
1155 clog10f NEW: ISO C 9x
1156 clog10l NEW: ISO C 9x
1166 cprojf NEW: ISO C 9x
1167 cprojl NEW: ISO C 9x
1169 crealf NEW: ISO C 9x
1170 creall NEW: ISO C 9x
1175 csinhf NEW: ISO C 9x
1176 csinhl NEW: ISO C 9x
1179 csqrtf NEW: ISO C 9x
1180 csqrtl NEW: ISO C 9x
1184 ctanhf NEW: ISO C 9x
1185 ctanhl NEW: ISO C 9x
1187 des_setparity NEW: Secure RPC
1188 ecb_crypt NEW: Secure RPC
1189 endutxent NEW: Unix98
1191 exp10f NEW: ISO C 9x
1192 exp10l NEW: ISO C 9x
1196 fattach NEW: STREAMS
1197 fdetach NEW: STREAMS
1201 feclearexcept NEW: ISO C 9x
1202 fegetenv NEW: ISO C 9x
1203 fegetexceptflag NEW: ISO C 9x
1204 fegetround NEW: ISO C 9x
1205 feholdexcept NEW: ISO C 9x
1207 feraiseexcept NEW: ISO C 9x
1208 ferror_locked REMOVED
1209 fesetenv NEW: ISO C 9x
1210 fesetexceptflag NEW: ISO C 9x
1211 fesetround NEW: ISO C 9x
1212 fetestexcept NEW: ISO C 9x
1213 feupdateenv NEW: ISO C 9x
1214 fflush_locked REMOVED
1218 fgets_unlocked NEW: GNU ext.
1219 fileno_locked REMOVED
1231 fputc_locked REMOVED
1232 fputs_unlocked NEW: GNU ext.
1233 fread_unlocked NEW: GNU ext.
1238 fstatvfs NEW: Unix98
1242 ftruncate64 NEW: LFS
1244 fwrite_unlocked NEW: GNU ext.
1245 gai_strerror NEW: IPv6
1249 getchar_locked REMOVED
1251 getdate_err NEW: Unix98
1252 getdate_r NEW: GNU ext.
1254 getnameinfo NEW: IPv6
1255 getnetname NEW: Secure RPC
1256 getpmsg NEW: STREAMS
1257 getpt NEW: Unix98 PTY
1258 getrlimit64 NEW: LFS
1259 getutxent NEW: Unix98
1260 getutxid NEW: Unix98
1261 getutxline NEW: Unix98
1262 glob64 NEW: GNU ext.
1263 globfree64 NEW: GNU ext.
1264 gnu_get_libc_release NEW: GNU ext.
1265 gnu_get_libc_version NEW: GNU ext.
1266 grantpt NEW: Unix98 PTY
1267 host2netname NEW: Secure RPC
1269 iconv_close NEW: iconv
1270 iconv_open NEW: iconv
1271 if_freenameindex NEW: IPv6
1272 if_indextoname NEW: IPv6
1273 if_nameindex NEW: IPv6
1274 if_nametoindex NEW: IPv6
1275 in6addr_any NEW: IPv6
1276 in6addr_loopback NEW: IPv6
1277 inet6_isipv4mapped NEW: IPv6
1278 isastream NEW: STREAMS
1279 iswblank NEW: GNU ext.
1280 key_decryptsession NEW: Secure RPC
1281 key_decryptsession_pk NEW: Secure RPC
1282 key_encryptsession NEW: Secure RPC
1283 key_encryptsession_pk NEW: Secure RPC
1284 key_gendes NEW: Secure RPC
1285 key_get_conv NEW: Secure RPC
1286 key_secretkey_is_set NEW: Secure RPC
1287 key_setnet NEW: Secure RPC
1288 key_setsecret NEW: Secure RPC
1289 llrint NEW: ISO C 9x
1290 llrintf NEW: ISO C 9x
1291 llrintl NEW: ISO C 9x
1292 llround NEW: ISO C 9x
1293 llroundf NEW: ISO C 9x
1294 llroundl NEW: ISO C 9x
1299 lrintf NEW: ISO C 9x
1300 lrintl NEW: ISO C 9x
1301 lround NEW: ISO C 9x
1302 lroundf NEW: ISO C 9x
1303 lroundl NEW: ISO C 9x
1305 makecontext NEW: Unix98
1306 mempcpy NEW: GNU ext.
1309 modify_ldt NEW: kernel
1313 nearbyint NEW: ISO C 9x
1314 nearbyintf NEW: ISO C 9x
1315 nearbyintl NEW: ISO C 9x
1316 netname2host NEW: Secure RPC
1317 netname2user NEW: Secure RPC
1318 nexttoward NEW: ISO C 9x
1319 nexttowardf NEW: ISO C 9x
1320 nexttowardl NEW: ISO C 9x
1324 passwd2des NEW: Secure RPC
1326 pow10f NEW: GNU ext.
1327 pow10l NEW: GNU ext.
1330 printf_size NEW: GNU ext.
1331 printf_size_info NEW: GNU ext.
1332 profil_counter REMOVED
1333 pthread_mutexattr_getkind_np REPLACED
1334 pthread_mutexattr_setkind_np REPLACED
1335 ptsname NEW: Unix98 PTY
1336 ptsname_r NEW: Unix98 PTY
1338 putchar_locked REMOVED
1339 putgrent NEW: GNU ext.
1341 putpmsg NEW: STREAMS
1342 pututxline NEW: Unix98
1346 readdir64_r NEW: LFS
1347 remquo NEW: ISO C 9x
1348 remquof NEW: ISO C 9x
1349 remquol NEW: ISO C 9x
1351 roundf NEW: ISO C 9x
1352 roundl NEW: ISO C 9x
1354 scalbln NEW: ISO C 9x
1355 scalblnf NEW: ISO C 9x
1356 scalblnl NEW: ISO C 9x
1358 sendfile NEW: kernel
1359 setcontext NEW: Unix98
1360 setrlimit64 NEW: LFS
1361 setutxent NEW: Unix98
1363 sigignore NEW: Unix98
1364 sigqueue NEW: POSIX.1b
1365 sigrelse NEW: Unix98
1366 sigset NEW: POSIX.1b
1367 sigtimedwait NEW: POSIX.1b
1368 sigwaitinfo NEW: POSIX.1b
1369 sincos NEW: GNU ext.
1370 sincosf NEW: GNU ext.
1371 sincosl NEW: GNU ext.
1375 strcasestr NEW: GNU ext.
1376 strtoimax NEW: ISO C 9x
1377 strtoumax NEW: ISO C 9x
1378 strverscmp NEW: GNU ext.
1379 svcauthdes_stats NEW: Secure RPC
1380 svcunix_create NEW: sunrpc etx
1381 svcunixfd_create NEW: sunrpc ext
1382 swapcontext NEW: Unix98
1383 tcgetsid NEW: Unix98 PTY
1384 tdestroy NEW: GNU ext.
1385 tgamma NEW: ISO C 9x
1386 tgammaf NEW: ISO C 9x
1387 tgammal NEW: ISO C 9x
1391 truncf NEW: ISO C 9x
1392 truncl NEW: ISO C 9x
1394 unlockpt NEW: Unix98 PTY
1395 updwtmpx NEW: Unix98
1396 user2netname NEW: Secure RPC
1397 utmpxname NEW: Unix98
1398 versionsort NEW: GNU ext.
1399 versionsort64 NEW: GNU ext.
1401 wcscasecmp NEW: GNU ext.
1402 wcsncasecmp NEW: GNU ext.
1403 wcsnlen NEW: GNU ext.
1404 wcstoimax NEW: ISO C 9x
1405 wcstoll NEW: ISO C 9x
1406 wcstoull NEW: ISO C 9x
1407 wcstoumax NEW: ISO C 9x
1409 wordexp NEW: POSIX.2
1410 wordfree NEW: POSIX.2
1411 write_profiling REMOVED
1412 xdecrypt NEW: Secure RPC
1413 xdr_authdes_cred NEW: Secure RPC
1414 xdr_authdes_verf NEW: Secure RPC
1415 xdr_cryptkeyarg NEW: Secure RPC
1416 xdr_cryptkeyarg2 NEW: Secure RPC
1417 xdr_cryptkeyres NEW: Secure RPC
1418 xdr_getcredres NEW: Secure RPC
1419 xdr_key_netstarg NEW: Secure RPC
1420 xdr_key_netstres NEW: Secure RPC
1421 xdr_keybuf NEW: Secure RPC
1422 xdr_keystatus NEW: Secure RPC
1423 xdr_netnamestr NEW: Secure RPC
1424 xdr_sizeof NEW: Secure RPC
1425 xdr_unixcred NEW: sunrpc ext
1426 xencrypt NEW: Secure RPC
1427 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1438 * inet_ntoa is thread-safe
1440 * updwtmp is moved from libutil to libc
1442 * rewrite of cbrt function
1444 * update of timezone data
1458 * add atoll function
1460 * fix complex problems in Berkeley DB code
1462 * fix math functions
1466 * fixed lots of header problems (especially Linux/GNU specific)
1468 * dynamic loader preserves all registers
1470 * Roland McGrath provided support for handling of auxiliary objects in
1471 the ELF dynamic loader.
1473 * support for parallel builds is improved
1477 * GNU extensions are no longer declared by default. To enable them you
1478 must define the macro `_GNU_SOURCE' in your program or compile with
1481 * The library has changed from using GNU ld symbol aliases to using weak
1482 symbols where available. The ELF object file format supports weak
1483 symbols; GNU ld also supports weak symbols in the a.out format. (There
1484 is also now support for other GNU ld extensions in ELF. Use the
1485 `--with-elf' option to configure to indicate you have ELF, and
1486 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1487 of many files which contained only symbol aliases, reducing the size of
1488 the source and the compiled library; many other files were renamed to
1489 less cryptic names previously occupied by the symbol alias files.
1490 There is a new header file <elf.h> for programs which operate on
1491 files in the ELF format.
1493 * Converted to Autoconf version 2, so `configure' has more options.
1494 Run `configure --help' to see the details.
1496 * The library can now be configured to build profiling, highly-optimized
1497 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1498 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1499 `configure' enable building these extra libraries. The shared library is
1500 built by default when using both ELF and GNU ld. When shared libraries
1501 are enabled, the new library `-ldl' is available for arbitrary run-time
1502 loading of shared objects; its interface is defined in <dlfcn.h>. The
1503 new header file <link.h> gives access to the internals of the run-time
1504 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1505 application of same name on other systems and it provides information
1506 about dynamically linked binaries.
1508 * The C library now provides the run-time support code for profiling
1509 executables compiled with `-pg'. Programs can control the profiling code
1510 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1511 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1512 the support for this file format was contributed by David Mosberger-Tang.
1514 * The math code has been replaced with a math library based on fdlibm from
1515 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1516 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1517 functions. The math functions now reside in a separate library, so
1518 programs using them will need to use `-lm' their linking commands.
1520 * John C. Bowman contributed optimized ix87 assembler inline functions.
1522 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1523 mechanism similar to that found in Solaris 2. This is now used for the
1524 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1525 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1526 file controls what services are used for each individual database. This
1527 works by loading shared libraries with names specified in `nsswitch.conf',
1528 so service modules can be changed or added at any time without even
1529 relinking any program. Currently there are the file, db, and NIS based
1530 NSS services available.
1532 * The new functions `strtoq' and `strtouq' parse integer values from
1533 strings, like `strtol' and `strtoul', but they return `long long int' and
1534 `unsigned long long int' values, respectively (64-bit quantities).
1536 * The new functions `strtof' and `strtold' parse floating-point values from
1537 strings, like `strtod', but they return `float' and `long double' values,
1538 respectively (on some machines `double' and `long double' are the same).
1540 * Ulrich Drepper has contributed new implementations of the floating-point
1541 printing and reading code used in the `printf' family of functions and
1542 `strtod', `strtof', and `strtold'. These new functions are perfectly
1543 accurate, and much faster than the old ones.
1545 * The implementation of the POSIX locale model was completely rewritten by
1546 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1547 to compile the POSIX locale definition.
1549 * The former dummy implementations of the strcoll and strxfrm function are
1550 now replaced by fully functional code contributed by Ulrich Drepper. The
1551 collation information comes from the POSIX locale definitions.
1553 * The new header <langinfo.h> defines an interface for accessing
1554 various locale-dependent data (using the locale chosen with `setlocale').
1556 * Ulrich Drepper has contributed a new suite of functions for operation on
1557 wide-character and multibyte-character strings, in <wchar.h>;
1558 and classification and case conversion of wide characters, in <wctype.h>.
1559 These new functions are conforming to the ISO C, Amendement 1 specification.
1561 * There is now a second implementation of the standard I/O library available.
1562 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1563 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1565 * You can now use positional parameter specifications in format strings
1566 for the `printf' and `scanf' families of functions. For example,
1567 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1568 ``Number 6, Mr Jones''. This is mainly useful when providing different
1569 format strings for different languages, whose grammars may dictate
1570 different orderings of the values being printed. To support this
1571 feature, the interface for `register_printf_handler' has changed; see
1572 the header file <printf.h> for details.
1574 * The `printf' and `scanf' families of functions now understand a new
1575 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1576 to group numbers as indicated by the locale; for `scanf' and friends, this
1577 says to accept as valid only a number with all the proper grouping
1578 separators in the right places. In the default "C" locale, numbers are
1579 not grouped; but locales for specific countries will define the usual
1580 conventions (i.e. separate thousands with `,' in the US locale).
1582 * The pgrp functions have been regularized, slightly incompatibly but much
1583 less confusingly. The core functions are now `getpgid' and `setpgid',
1584 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1585 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1586 provided for compatibility. There is no longer an incompatible `getpgrp'
1587 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1589 * The new header file <fts.h> and suite of functions simplify programs that
1590 operate on directory trees. This code comes from 4.4 BSD.
1592 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1593 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1594 NSS scheme used in glibc.
1596 * There is a new malloc debugging hook `__memalign_hook'.
1598 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1599 `unsigned int' in <sys/types.h>. These are for compatibility only and
1600 their use is discouraged.
1602 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1603 done differently, so that it works even without GNU ld.
1605 * New function `euidaccess' checks allowed access to a file like `access',
1606 but using the effective IDs instead of the real IDs.
1608 * The time zone data files have been updated for the latest and greatest
1609 local time conventions of the countries of the world.
1611 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1614 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1615 for formatting floating-point numbers. They are provided only for
1616 compatibility; new programs should use `sprintf' instead. There are
1617 also equivalent function for the `long double' floating-point type and
1618 all functions also exist in a reentrant form.
1620 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1621 functions for maintaining the login-record files (primarily of use to
1622 system programs such as `login'), and convenient functions for
1623 allocating and initializing a pseudo-terminal (pty) device.
1625 * Ulrich Drepper has contributed new support for System V style
1626 shared memory and IPC on systems that support it.
1628 * Ulrich Drepper has contributed several miscellaneous new functions found
1629 in System V: The `hsearch' family of functions provide an effective
1630 implementation of hash tables; `a64l' and `l64a' provide a very simple
1631 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1634 * Ulrich Drepper has contributed new reentrant counterparts for the
1635 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1637 * Ulrich Drepper has contributed new, highly-optimized versions of several
1638 string functions for the i486/Pentium family of processors.
1640 * Ulrich Drepper has updated the Linux-specific code, based largely
1641 on work done in Hongjiu Lu's version of GNU libc for Linux.
1642 The GNU library now supports Linux versions 2.0.10 and later,
1643 using the ELF object file format (i[3456]86-*-linux).
1645 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1647 * David Mosberger-Tang and Richard Henderson have ported the C library
1648 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1649 dynamic linking support for ELF/Alpha.
1651 * Richard Henderson contributed several Alpha optimized assembler function
1652 for arithmetic and string handling.
1654 * Ulrich Drepper has contributed a new set of message catalog functions to
1655 support multiple languages using the <libintl.h> interface, for use with
1656 his new package GNU gettext. Translation volunteers have contributed
1657 catalogs of the library's messages in Spanish, German, and Korean.
1659 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1660 program and the `catgets' function for reading the catalog files it
1661 creates. (The <libintl.h> interface is preferred; we include the
1662 <nl_types.h> interface using `catgets' only for source compatibility with
1663 programs already written to use it.)
1665 * New header file <values.h> gives SVID-compatible names for <limits.h>
1668 * Various new macros, declarations, and small header files for compatibility
1671 * New function `group_member' is a convenient way to check if a process has
1672 a given effective group ID.
1674 * When using GCC 2.7 and later, the socket functions are now declared in a
1675 special way so that passing an argument of type `struct sockaddr_in *',
1676 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1677 `struct sockaddr *' type, does not generate a type-clash warning.
1679 * New function `error' declared in header file <error.h> is a convenient
1680 function for printing error messages and optionally exiting; this is the
1681 canonical function used in GNU programs. The new functions `err', `warn',
1682 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1683 doing the same thing.
1685 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1686 POSIX.2 `glob' function to do ~ and {...} expansion.
1688 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1689 `clearenv' which is used in POSIX.9 is also available.
1691 * New function `getsid' returns session ID number on systems that support it.
1693 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1694 files <db.h> and <mpool.h> provide a rich set of functions for several
1695 types of simple databases stored in memory and in files, and <ndbm.h> is
1696 an old `ndbm'-compatible interface using the `db' functions. Link with
1697 `-ldb' to get these functions.
1699 * New macro `strdupa' copies a string like `strdup', but uses local stack
1700 space from `alloca' instead of dynamic heap space from `malloc'.
1702 * New function `strnlen' is like `strlen' but searches only a given maximum
1703 number of characters for the null terminator. `stpncpy', `strndup' and
1704 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1707 * New function `statfs' in header <sys/statfs.h>.
1709 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1710 provide convenient functions for operating on blocks of null-terminated
1713 * A new suite of functions in <utmp.h> handle all the details of reading
1714 and writing the utmp file.
1716 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1719 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1720 completely POSIX compliant and also implemented the extended functionality
1721 to handle alternate digit representation and alternate era date formats.
1723 * Ulrich Drepper provided an implementation of the `strptime' function
1724 defined in XPG4.2 which transforms a string into a `struct tm' value.
1726 * Paul Eggert provided the tzselect shell script as part of the timezone
1727 code. The shell script makes it easy to select the correct timezone
1730 * The implementation of the malloc family of functions is completely replaced
1731 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1732 The implementation uses the mmap function (if available) and it is
1733 optimized for the use in multi threaded programs.
1735 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1736 functions. This new functionality is usable by specifying a special
1737 salt string and it is compatible with implementation on *BSD systems.
1739 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1740 `getsubopt' to handle second level command line options, `bsd_signal'
1741 to access BSD style `signal' functionality, the obsolete `regexp' style
1744 * the `lchown' function is available on system which support this
1747 * The implementation of the shadow password handling function was contributed
1750 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1752 * POSIX.1g support was added. The <sys/select.h> header is available,
1753 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1754 implementation of `getaddrinfo'.
1758 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1760 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1761 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1763 * The new function `daemon' from 4.4 BSD is useful for server programs that
1764 want to put themselves in the background.
1766 * Joel Sherrill has contributed support for several standalone boards that
1767 run without an operating system.
1769 * `printf', `scanf' and friends now accept a `q' type modifier for long
1770 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1772 * All of the code taken from BSD (notably most of the math and networking
1773 routines) has been updated from the BSD 4.4-Lite release.
1775 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1777 * The new functions `getdomainname' and `setdomainname' fetch or change the
1778 YP/NIS domain name. These are system calls which exist on systems which
1781 * The time zone data files have been updated for the latest international
1784 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1785 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1789 * The C library now includes support for Sun RPC, from Sun's free
1790 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1791 are included. (There is still no support for YP.)
1793 * Tom Quinn has contributed a port of the C library to SGI machines running
1794 Irix 4 (mips-sgi-irix4).
1796 * The new `lockf' function is a simplified interface to the locking
1797 facilities of `fcntl', included for compatibility.
1799 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1801 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1803 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1806 * The error message printed by `assert' for a failed assertion now includes
1807 the name of the program (if using GNU ld) and the name of the calling
1808 function (with versions of GCC that support this).
1810 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1812 * The library now includes the <sys/mman.h> header file and memory
1813 management functions `mmap', `munmap', `mprotect', `msync', and
1814 `madvise', on systems that support those facilities.
1816 * The interface for `mcheck' has changed slightly: the function called to
1817 abort the program when an allocation inconsistency is detected now takes
1818 an argument that indicates the type of failure. The new function
1819 `mprobe' lets you request a consistency check for a particular block at
1820 any time (checks are normally done only when you call `free' or `realloc'
1823 * It is now possible to easily cross-compile the C library, building on one
1824 system a library to run on another machine and/or operating system. All
1825 you need to do is set the variable `HOST_CC' in `configparms' to the
1826 native compiler for programs to run on the machine you are building on (a
1827 few generator programs are used on Unix systems); set `CC' to the
1830 * The new function `fexecve' (only implemented on the GNU system) executes
1831 a program file given a file descriptor already open on the file.
1835 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1836 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1838 * You can set the variable `libprefix' in `configparms' to specify a prefix
1839 to be prepended to installed library files; this makes it easy to install
1840 the GNU C library to be linked as `-lgnuc' or whatever.
1842 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1843 copies a limited number of characters from a string, and returns the
1844 address of the last character written.
1846 * You no longer need to check for whether the installed `stddef.h' is
1847 compatible with the GNU C library. configure now checks for you.
1849 * You can now define a per-stream `fileno' function to convert the
1850 stream's cookie into an integral file descriptor.
1852 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1853 allocates zero bytes of storage, and returns a unique pointer which
1854 you can pass to `realloc' or `free'. The behavior is undefined if
1855 you dereference this pointer.
1857 * The C library now runs on Sony NEWS m68k machines running either
1858 NewsOS 3 or NewsOS 4.
1860 * The new `syscall' function is a system-dependent primitive function
1861 for invoking system calls. It has the canonical behavior on Unix
1862 systems, including unreliable return values for some calls (such as
1863 `pipe', `fork' and `getppid').
1865 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1866 to `EAGAIN', which is the preferred name. On systems whose kernels
1867 use two distinct codes, the C library now translates EWOULDBLOCK to
1868 EAGAIN in every system call function.
1872 * The GNU C Library Reference Manual is now distributed with the library.
1873 `make dvi' will produce a DVI file of the printed manual.
1874 `make info' will produce Info files that you can read on line using C-h i
1875 in Emacs or the `info' program.
1876 Please send comments on the manual to bug-glibc-manual@gnu.org.
1878 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1880 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1882 * Jason Merrill has contributed a port to the Sequent Symmetry running
1883 Dynix version 3 (i386-sequent-dynix).
1885 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1886 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1888 * New function `memory_warnings' lets you arrange to get warnings when
1889 malloc is running out of memory to allocate, like Emacs gives you.
1891 * The C library now contains the relocating allocator used in Emacs 19 for
1892 its editing buffers. This allocator (ralloc) minimizes allocation
1893 overhead and fragmentation by moving allocated regions around whenever it
1894 needs to. You always refer to a ralloc'd region with a "handle" (a
1895 pointer to a pointer--an object of type `void **').
1897 * There is a new `printf' format: `%m' gives you the string corresponding
1898 to the error code in `errno'.
1900 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1901 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1902 pass, the `a' modifier says to fill in a `char **' you pass with a
1905 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1906 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1907 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1909 * `mkstemp' is a traditional Unix function to atomically create and open a
1910 uniquely-named temporary file.
1914 * The standard location for the file that says what the local timezone is
1915 has changed again. It is now `/usr/local/etc/localtime' (or more
1916 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1918 * The distribution no longer contains any files with names longer than 14
1921 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1922 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1924 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1928 * The configuration process has changed quite a bit. The `configure'
1929 script is now used just like the configuration scripts for other GNU
1930 packages. The `sysdeps' directory hierarchy is much rearranged.
1931 The file `INSTALL' explains the new scheme in detail.
1933 * The header files no longer need to be processed into ANSI C and
1934 traditional C versions. There is just one set of files to install, and
1935 it will work with ANSI or old C compilers (including `gcc -traditional').
1937 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1938 MIPS DECStation running Ultrix 4.
1940 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1941 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1942 made itself into a shared library.
1944 * Yet further improved support for the i386, running 4.3 BSD-like systems
1945 (such as Mach 3 with the Unix single-server), or System V.
1947 * New function `strncasecmp' to do case-insensitive string comparison
1948 with limited length.
1950 * New function `strsep' is a reentrant alternative to `strtok'.
1952 * New functions `scandir' and `alphasort' for searching directories.
1954 * New function `setenv' is a better interface to `putenv'.
1956 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1957 function for traversing a directory tree.
1959 * The GNU obstack package is now also part of the C library.
1960 The new function `open_obstack_stream' creates a stdio stream that
1961 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1962 formatted output directly to an obstack.
1964 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1965 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1967 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1969 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1970 things to your strings.
1972 * There are some new test programs: test-fseek, testmb, and testrand.
1974 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1975 These ports are not finished, but are a good starting place for really
1976 supporting those systems.
1978 * `/etc/localtime' is now the standard location for the file that says what
1979 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1980 This follows the general principle that `/etc' is the place for all local
1981 configuration files.
1983 * The C library header files now use `extern "C"' when used by the C++
1984 compiler, so the C library should now work with C++ code.
1986 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1987 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1990 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1991 function which uses the `merge sort' algorithm, and is said to be
1992 significantly faster than the old GNU `qsort' function. Merge sort is
1993 now the standard `qsort' function. The new algorithm can require a lot
1994 of temporary storage; so, the old sorting function is called when the
1995 required storage is not available.
1997 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1998 provides the Unix `crypt' function, plus some other entry points.
2000 * The code and header files taken from 4.4 BSD have been updated with the
2001 latest files released from Berkeley.
2003 ----------------------------------------------------------------------
2004 Copyright information:
2006 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2008 Permission is granted to anyone to make or distribute verbatim copies
2009 of this document as received, in any medium, provided that the
2010 copyright notice and this permission notice are preserved,
2011 thus giving the recipient permission to redistribute in turn.
2013 Permission is granted to distribute modified versions
2014 of this document, or of portions of it,
2015 under the above conditions, provided also that they
2016 carry prominent notices stating who last changed them.
2019 version-control: never
projects / platform / upstream / glibc.git / blob