1 GNU C Library NEWS -- history of user-visible changes. 2011-9-5
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,
15 * New program pldd to list loaded object of a process
16 Implemented by Ulrich Drepper.
18 * Add nss_db support back to glibc. No more dependency on Berkeley db
19 and support for initgroups lookups.
20 Implemented by Ulrich Drepper.
22 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
25 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
28 * Optimized strcat and strncat on x86-64 and optimized wcscmp on x86-32 and
30 Contributed by Liubov Dmitrieva.
32 * Optimized strchrm strrchr for SSE on x86-32.
33 Contributed by Liubov Dmitrieva.
35 * New interfaces: scandirat, scandirat64
36 Implemented by Ulrich Drepper.
40 * The following bugs are resolved with this release:
42 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
43 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
44 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
45 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
46 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
47 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
48 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
49 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
50 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
51 12795, 12811, 12813, 12814, 12841
53 * The RPC implementation in libc is obsoleted. Old programs keep working
54 but new programs cannot be linked with the routines in libc anymore.
55 Programs in need of RPC functionality must be linked against TI-RPC.
56 The TI-RPC implementation is IPv6 enabled and there are other benefits.
58 Visible changes of this change include (obviously) the inability to link
59 programs using RPC functions without referencing the TI-RPC library and the
60 removal of the RPC headers from the glibc headers.
61 Implemented by Ulrich Drepper.
63 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
64 syncfs, setns, sendmmsg
66 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
67 yue_HK, lij_IT, mhr_RU
69 * New encodings: CP770, CP771, CP772, CP773, CP774
71 * New program sotruss to trace calls through PLTs
72 Implemented by Ulrich Drepper.
74 * The malloc hook implementation is marked deprecated and will be removed
75 from the default implementation in the next version. The design never
76 worked ever since the introduction of threads. Even programs which do
77 not create threads themselves can use multiple threads created internally.
81 * The following bugs are resolved with this release:
83 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
84 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
85 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
86 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
89 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
91 * POWER7 optimizations: memset, memcmp, strncmp
93 * New optimized string functions for x86-64: strnlen (SSE2),
94 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
95 Implemented by Ulrich Drepper.
99 * The following bugs are resolved with this release:
101 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
102 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
103 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
104 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
105 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
106 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
107 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
108 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
110 * New interfaces: pthread_getname_np, pthread_setname_np
112 * New Linux interface: recvmmsg
114 * STT_GNU_IFUNC implemented for Sparc by David Miller.
116 * The dynamic linker now recognizes supported ABI versions from the
117 EI_ABIVERSION field in the ELF header.
118 Implemented by Ulrich Drepper.
120 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
121 will not be used to fill in password fields in the passwd.byname replies.
122 Instead it is used to synthesize the shadow.byname table, should it be
123 missing. This is a useful mode in some installations involving Solaris.
124 Implemented by Ulrich Drepper.
126 * New locales: kok_IN, sq_MK, cv_RU
130 * The following bugs are resolved with this release:
132 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
133 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
134 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
135 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
136 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
137 10789, 10817, 10823, 10840, 10847
139 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
141 Implemented by Ulrich Drepper.
143 * Checking version of longjmp added that fails if an uninitialized stack
144 frame would be created. Implemented by Ulrich Drepper.
146 * STT_GNU_IFUNC is now supported in static executables.
147 Implemented by H.J. Lu.
149 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
151 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
152 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
153 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
154 Contributed by H.J. Lu.
156 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
157 Implemented by Ulrich Drepper.
159 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
161 Contributed by H.J. Lu.
163 * Support for fma instruction in AVX on x86-64.
164 Implemented by H.J. Lu and Ulrich Drepper.
166 * AVX support in x86-64 auditing support in ld.so.
167 Implemented by H.J. Lu.
169 * STB_GNU_UNIQUE support added.
170 Implemented by Ulrich Drepper.
172 * Implement second fallback mode for optimized DNS lookup for even more
173 broken environments. If two requests from the same port are not
174 handled correctly close the socket and open a new one before sending
175 the second request. The 'single-request-reopen' option in /etc/resolv.conf
176 can be used to select this mode right away, instead of rediscovering the
177 necessity is every process again.
178 Implemented by Ulrich Drepper.
180 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
181 Implemented by Adam Tkac.
183 * Optimized iconv conversions for S390x.
184 Implemented by Andreas Krebbel.
186 * Using condvars with PI mutexes is now more efficient due to kernel
187 support for requeueing to PI futexes. NPTL support added for x86-64.
188 Implemented by Ulrich Drepper.
190 * New locales: ps_AF, my_MM
194 * The following bugs are resolved with this release:
196 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
197 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
198 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
199 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
200 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
202 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
203 Implemented by Ulrich Drepper.
205 * New Linux interfaces: accept4, fallocate, fallocate64.
206 Implemented by Ulrich Drepper.
208 * Correct declarations of string function when used in C++ code. This
209 could lead to compile errors for invalid C++ code.
211 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
214 * New POSIX 2008 interface: psiginfo
215 Implemented by Ulrich Drepper.
217 * New ISO C++1x interfaces: quick_exit, at_quick_exit
218 Implemented by Ulrich Drepper.
220 * Support for selecting between multiple function definitions at runtime
221 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
223 * The libcrypt library can now use the hash function implementations in
224 NSS. Implemented by Ulrich Drepper.
226 * The malloc implementation can be compiled to be less memory efficient
227 but higher performing in multi-threaded programs.
228 Implemented by Ulrich Drepper.
230 * New locales: nan_TW@latin, ks_IN
232 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
233 Implemented by Ulrich Drepper.
235 * Extended printf hook support. It is possible to use user-defined types
236 and extend existing format specifiers.
237 Implemented by Ulrich Drepper.
239 * Handling for group shadow files has been added.
240 Implemented by Ulrich Drepper.
242 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
243 servers (the case, e.g., for some people using the built-in DNS
244 server in ADSL modems/routers). There is a once-per-process timeout
245 in case of a broken server. To avoid it, users can run nscd or put
246 'options single-request' in /etc/resolv.conf.
247 Implemented by Ulrich Drepper.
251 * The following bugs are resolved with this release:
253 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
254 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
255 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
256 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
257 6968, 6974, 6980, 6995, 7008, 7009, 7029
259 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
260 up at the same time. Implemented by Ulrich Drepper.
262 * TLS descriptors for LD and GD on x86 and x86-64.
263 Implemented by Alexandre Oliva.
265 * getaddrinfo now handles DCCP and UDPlite.
266 Implemented by Ulrich Drepper.
268 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
269 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
270 Implemented by Ulrich Drepper.
272 * New implementation of memmem, strstr, and strcasestr which is O(n).
273 Implemented by Eric Blake.
275 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
277 * Implement "e" option for popen to open file descriptor with the
278 close-on-exec flag set. Implemented by Ulrich Drepper.
280 * Implement "b" mode for fmemopen. In this mode writes writes don't
281 implicitly add a NUL byte and seeks from the end of the buffer really
282 use the buffer end, not the string length as the basis.
283 Implemented by Ulrich Drepper.
285 * Many functions, exported and internal, now atomically set the close-on-exec
286 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
288 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
290 Implemented by Pravin Satpute.
292 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
296 * The following bugs are resolved with this release:
298 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
299 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
300 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
301 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
302 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
303 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
304 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
306 * New locales: bo_CN, bo_IN, shs_CA.
308 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
310 * Sorting rules for some Indian languages (Devanagari and Gujarati).
311 Implemented by Pravin Satpute.
313 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
315 * nscd caches now all timeouts for DNS entries
316 Implemented by Ulrich Drepper.
318 * nscd is more efficient and wakes up less often.
319 Implemented by Ulrich Drepper.
321 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
322 vdprintf, and obstack_vprintf.
323 Implemented by Jakub Jelinek.
325 * Faster memset for x86-64.
326 Implemented by Harsha Jagasia and H.J. Lu.
328 * Faster memcpy on x86.
329 Implemented by Ulrich Drepper.
331 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
332 Implemented by Ulrich Drepper.
334 * Faster sqrt and sqrtf implemention for some PPC variants.
335 Implemented by Stephen Munroe.
339 * The following bugs are resolved with this release:
341 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
342 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
343 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
344 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
345 5071, 5103, 5104, 5112, 5113, 5184, 5186
347 * More checking functions: fread, fread_unlocked, open*, mq_open.
348 Implemented by Jakub Jelinek and Ulrich Drepper.
350 * Extend fortification to C++. Implemented by Jakub Jelinek.
352 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
353 by not recognizing 'a' as a modifier when those specs are requested.
354 Implemented by Jakub Jelinek.
356 * PPC optimizations to math and string functions.
357 Implemented by Steven Munroe.
359 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
360 options to be passed. Implemented by Ulrich Drepper.
362 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
364 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
365 Implemented by Ulrich Drepper.
367 * Handle private futexes in the NPTL implementation.
368 Implemented by Jakub Jelinek and Ulrich Drepper.
370 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
371 Implemented by Roland McGrath and Ulrich Drepper.
373 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
375 * SHA-256 and SHA-512 based password encryption.
376 Implemented by Ulrich Drepper.
378 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
379 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
382 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
383 Implemented by Ulrich Drepper.
387 * The following bugs are resolved with this release:
389 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
390 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
391 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
392 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
393 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
394 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
395 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
398 * New Linux interfaces: epoll_pwait, sched_getcpu.
400 * New generic interfaces: strerror_l.
402 * nscd can now cache the services database. Implemented by Ulrich Drepper.
406 * The following bugs are resolved with this release:
408 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
409 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
410 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
411 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
412 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
413 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
414 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
415 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
416 3225, 3251, 3252, 3253, 3273
418 * For Linux, the sorting of addresses returned by getaddrinfo now also
419 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
420 Implemented by Ulrich Drepper.
422 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
423 Implemented by Ulrich Drepper.
425 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
427 * New iconv module for MIK. Contributed by Alexander Shopov.
429 * For sites with broken group and/or passwd database, the auto-propagate
430 option of nscd can prevent creating ID lookup entries from the results
431 of a name lookup and vice versa. This usually is no problem but some
432 site might have problems with the default behavior.
433 Implemented by Ulrich Drepper.
435 * Iterating over entire database in NIS can be slow. With the
436 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
437 to trade time for memory. The entire database will be read at once.
438 Implemented by Ulrich Drepper.
440 * The interfaces introduced in RFC 3542 have been implemented by
443 * Support for the new ELF hash table format was added by Ulrich Drepper.
445 * Support for priority inheritance mutexes added by Jakub Jelinek and
448 * Support for priority protected mutexes added by Jakub Jelinek.
450 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
451 or_IN, csb_PL, fy_NL, sr_ME.
455 * More overflow detection functions.
457 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
458 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
460 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
461 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
462 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
463 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
464 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
465 by Masahide Washizawa.
467 * It is now possible to install audit libraries for the dynamic linker using
468 LD_AUDIT. Implemented by Ulrich Drepper.
470 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
471 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
472 For a libc and libpthread that works well on Linux 2.4 kernels, we
473 recommend using the stable 2.3 branch.
475 * The new function open_wmemstream acts like open_memstream,
476 but uses a wchar_t wide character buffer.
478 * The new function ppoll is an improved version of poll, similar to pselect.
480 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
481 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
482 renameat, unlinkat, linkat, symlinkat, readlinkat.
484 * New Linux kernel system calls: unshare,
485 inotify_init, inotify_add_watch, inotify_rm_watch.
487 * The euidaccess function is now also known by the alias eaccess,
488 for compatibility with some other systems.
490 * Timezone data updated to 2006b version.
494 * The following bugs are resolved with this release:
496 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
497 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
498 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
499 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
500 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
501 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
503 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
505 * As of this release, GCC 4 can be used to compile the C Library.
507 * Timezone data updated to 2005m version.
511 * The following bugs are resolved with this release:
513 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
514 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
515 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
516 777, 787, 821, 822, 823, 825
518 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
522 * Support for RFC 3678. Real implementations exist only for Linux so far.
523 Implemented by Ulrich Drepper.
525 * nscd can now cache entries persistently. Expiring entries are reloaded.
526 For speedups the cache can be shared in memory with client processes.
527 Implemented by Ulrich Drepper.
529 * nscd can now perform SELinux checks.
530 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
532 * getaddrinfo queries are now cached. Canonical name lookup is performed
534 Implemented by Ulrich Drepper.
536 * The nothrow function attribute is used when headers are used by gcc when
537 compiling C code. This can avoid significant amounts of exception
540 * The malloc functions perform more error checking and are stricter when
541 it comes to reacting on errors. The default action is to terminate
542 the process after showing an error message. Implemented by Ulrich Drepper.
544 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
545 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
547 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
548 namespaces using the new function dlmopen(). This feature is of course,
549 like most other dynamic loading functionality, not available in statically
550 linked applications. Implemented by Ulrich Drepper.
552 * Low-overhead boundary checking variants of string and some stdio functions
553 were added. These are to be used in conjunction with a gcc patch by
554 Jakub Jelinek which adds calls to these functions if possible.
555 Implemented by Jakub Jelinek and Ulrich Drepper.
557 * Old code for several operating systems and machine architectures that
558 have not been in working condition in a long time have been removed from
559 the main source tree maintained by the GNU C Library's maintainers.
560 These files are now reside in the separate `ports' source module
561 that is usable as an add-on when building the library.
565 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
566 interrogate the dynamic linker, compatible with the Solaris interface.
568 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
569 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
571 * getifaddrs now uses the netlink interface on Linux to get its information.
572 Implemented by Thorsten Kukuk.
574 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
575 Implemented by Ulrich Drepper.
577 * support for non-executable stacks on x86 has been added. Changes mostly
580 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
583 * getaddrinfo now performs destination address selection according to
588 * Thread-safe interfaces for many functions that access locale data
589 were added in version 2.3, but these features were omitted from NEWS.
590 Many functions have variants with an `_l' suffix that take a `locale_t'
591 object as a parameter rather than consulting the current locale.
592 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
593 create and maintain `locale_t' objects. Additionally, the new function
594 `uselocale' sets "the current locale" (as used by functions not so
595 parameterized) set for an individual thread. These features were added
596 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
598 * The functions getresuid, getresgid, setresuid, and setresgid, which
599 have long been available on Linux, are now declared in <unistd.h>
600 and are now also available on the Hurd.
602 * ELF thread-local storage support (TLS) now works on x86-64.
604 * The new dynamic string token $LIB is expanded in shared library names.
605 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
607 * Aldy Hernandez contributed complete software floating point support for
608 PowerPC machines with no FPU.
610 * fexecve is implemented on Linux.
612 * The `btowc' function should work at least twice as fast due to
613 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
615 * With approriate thread add-ons cancelable functions are now implemented
616 in libc.so as well. No need to call the function in libpthread. This
617 change allowed to finally disable the incorrect and expensive handling
618 of weak definition in ld.so.
620 * Yet more PLT entries in libc.so have been removed. We finally arrived
621 at the bare minimum. Startup times improved appropriately.
623 * Support for the new Linux/x86 system call interface was added. The
624 AT_SYSINFO auxiliary vector entry is recognized and handled.
628 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
631 * iconv (the program and the interface) now accepts empty names (excluding
632 options like //TRANSLIT) to mean "use charset of current locale".
634 * localedef can now transliterate characters in strings which are not in
635 the provided charmap. The information from the input locale is used.
637 * Prelinking support was added for ELF targets. This requires additional
638 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
640 * Read-only stdio streams now use mmap to speed up operation by eliminating
641 copying and buffer underflows. To use add 'm' to the mode string of
642 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
644 * The malloc functions were completely rewritten by Wolfram Gloger based
645 on Doug Lea's malloc-2.7.0.c.
647 * Isamu Hasegawa contributed a completely new and POSIX-conformant
648 implementation of regex.
650 * Bruno Haible upgraded the iconv and locale implementation to support
653 * Contents of the LC_* and LANG environment variables in the CEN style are
654 not recognized anymore. It never was used. Change by Ulrich Drepper.
656 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
657 thread-local storage (TLS) ABI on some platforms.
658 Changes by Ulrich Drepper. SH support by Kaz Kojima.
660 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
661 EUC-JISX0213, and TSCII.
663 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
664 BSD-compatible interface for getting all network interface addresses.
665 Implementation for IPv4 by Roland McGrath.
667 * Loading of locale data is faster due to the introduction of a locale
668 archive. Implemented by Roland McGrath and Ulrich Drepper.
670 * Startup times are significantly reduced by not using exported functions
671 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
674 * Steven Munroe contributed a port to PowerPC64/Linux.
678 * The Hurd now uses the GNU libio implementation of stdio rather than the
679 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
681 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
682 with the same behavior as the Linux system call of the same name.
686 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
687 128-bit long double format.
689 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
690 IBM1161, and IBM1162 charsets.
692 * Andreas Jaeger contributed a port to x86-64/Linux.
694 * Peter Bruin contributed a port to PowerPC/Hurd.
696 * libc functions using I/O streams now can handle wide-oriented streams
699 * optimizations in the dynamic linker. Binaries created by recent binutils
700 versions start up quicker due to reduced time spent on relocations.
702 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
706 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
707 asinh, atanh, j0 for the 128-bit long double format.
709 * Bruno Haible updated all the code handling Unicode in some form to
712 * Speed of regex for single-byte locales is back to previous levels.
713 Patch by Isamu Hasegawa.
715 * Alpha, SPARC, and IA-64 now also using floating stacks.
717 * Startup time of internationalized applications greatly improved through
718 iconv cache. Use iconvconfig to generate the cache file.
719 Contributed by Ulrich Drepper.
721 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
722 severe performance problems. Patch by David Mosberger.
724 * The Hurd port got a lot more functionality like AIO, various stdio
725 extensions, etc. Mainly done by Roland McGrath.
727 * mtrace can now lookup symbols in shared libraries.
731 * Intel's IA-64 math library is largely integrated. It provides fast and
732 accurate implementatations for most basic and standard math functions
733 in float, double, and long double format.
735 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
736 and asin for the 96-bit long double format and asin, log, tan for the
737 128-bit long double format.
739 * The beginning of a last-bit accurate math library by IBM Haifa were added.
740 The basic double functions exist today. Contributed by Abraham Ziv
741 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
742 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
744 * An asynchronous name lookup library was added. The interface is designed
745 after POSIX AIO. The proposal was circulated beforehand to get comments.
746 No negative ones came in. Implemented by Ulrich Drepper.
748 * Port to S390/64bit contributed by Martin Schwidefsky
749 <schwidefsky@de.ibm.com>.
751 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
752 of functions for Linux/IA-64.
754 * The RPC code is now thread safe. Threads can now use the same service
755 of different services at the same time. Patch by Eric Norum
756 <eric.norum@usask.ca> with some help by Ulrich Drepper.
758 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
759 family of functions for Linux/S390.
761 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
762 of functions for Linux/x86.
764 * Port to Linux/CRIS contributed by Axis Communications.
768 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
769 we can now check for namespace violations and missing declarations. The
770 result is that almost all headers are now Unix-compliant (as defined in
771 the upcoming XPG6). The negative side is that some programs might need
772 corrections, too, if they depend on the incorrect form of the headers in
773 previous versions which defined too many symbols and included too many
776 * regex now handles multibyte character sets correctly.
777 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
779 * iconv (the program) does now conform to the upcoming XPG6 and handles
780 charmaps. Instead of the charset names the path of charmaps can be
781 provided and the conversion happens based on this data.
782 Contributed by Ulrich Drepper.
784 * The locale program now provides detailed information about the installed
789 only lists the names of the supported locales
793 provides details such as country, language, and codeset name.
794 Contributed by Ulrich Drepper.
798 * The gencat program now parses the input file according to the charset
799 selected by the LC_CTYPE category. This is important for stateful
800 character sets. To make generating catalogs easier there is a way
801 to overwrite the charset selected by the locale: before the first
802 message or $ quote line the catalog can contain a line like
806 to select the charset (ISO-8859-2 in this case).
808 Implemented by Shinya Hanataka and Ulrich Drepper.
810 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
811 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
812 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
814 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
815 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
817 * The LANGUAGE environment variable is now ignored unless the locale is
818 changed from the default "C" locale.
820 * The usual bug fixes.
824 * Greg McGary added runtime support for bounds checking using gcc's
825 new -fbounded-pointers option. ix86 target is complete. PowerPC
828 * Thorsten Kukuk added secure mode support to nscd.
830 * The Berkeley db libraries have been removed.
832 Related, the nss_db module is now in a separate package since it
833 obviously requires a database library being available.
835 * Wide character I/O streams implemented by Ulrich Drepper.
837 * Functions from the extended socket API added by Ulrich Drepper.
839 * Functions feenableexcept and fedisableexcept to control the
840 behaviour of individual exceptions have been added by Andreas Jaeger.
842 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
844 * The resolver code has been updated from bind 8.2.3-T5B which supports
845 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
848 This change could in some situations effect backward compatibility. Since
849 now `_res' is a thread-local instead of a global variable, modifying it
850 in one thread does not have any effect in other threads.
852 The resolver library was also extended to allow IPv6 as the transport
853 protocol for the requests. This work was done by Stig Venaas.
855 * Compatibility code for K&R C compilers has been removed from the
856 header files. A ISO C compiler is needed to use the library
857 (conforming to either C89 or C99 standard).
859 * Complete rewrite of the localedef program to support multibyte character
860 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
861 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
862 Implemented by Ulrich Drepper.
864 Bruno Haible significantly improved the generation and use of the data
865 structures for the wide character tables.
867 * Plural handling in gettext implemented by Ulrich Drepper.
869 * The utmp daemon has been removed.
871 * The port to MIPS-Linux has been finished by Andreas Jaeger.
873 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
876 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
878 * POSIX barriers implemented by Kaz Kylheku.
880 * POSIX spawn function family implemented by Ulrich Drepper.
882 * POSIX spinlocks are now available.
884 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
886 * the configure option --enable-kernel=X.Y.Z allows to strip out
887 compatibility for kernel versions before X.Y.Z. This is currently only
888 implemented for Linux.
890 * the sockaddr_in6 structure changed. The IPv6 working group added a new
891 field sin6_scope_id. This means that all programs using IPv6 should be
892 recompiled. Don't expect binary compatibility with previous glibc
895 * various conversion modules for IBM character sets contributed by
898 * IA-64 port by Jes Sorensen and HJ Lu.
900 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
901 Compiling the GNU C Library for Linux/ia64
902 ******************************************
904 Please refer to the file INSTALL in the same directory as you found
905 this file for general information about configuring and compiling
908 For general inquiries about glibc under Linux/ia64 please use the
909 following mailing list linux-ia64@linuxia64.org or one of the relevant
912 Recommended Tools for Compilation
913 =================================
915 In order for glibc-2.2 to build correctly on the ia64 you need at
916 least the following versions of the GNU tools (the :
918 * The Cygnus toolchain snapshot for the ia64 as of August 4
919 including the provided set of patches. It is however recommend
920 you use the October 24 toolchain snapshot or a more recent version.
922 OR alternatively you can try the following (the Cygnus toolchain is
923 the recommended solution):
925 * GCC and binutils, GAS and GNU LD out of CVS from
926 sources.redhat.com as of August 28, 2000 or later. The CVS tree
927 may require special patches to work properly on the ia64.
929 Configuring and compiling GNU Libc for Linux/ia64
930 =================================================
932 The library requires Linux kernel version 2.4.0-test4-000728 or
933 later to funtion properly. Besides that it support for debug libraries
934 is currently untested. Hence the following options
935 are required for configuring the library:
937 --disable-debug --enable-kernel=2.4.0
939 It is also important that you make sure the library picks up the
940 appropriate kernel header files, if you do not have recent enough
941 kernel headers in /usr/src/linux/include, you should use the
942 --with-headers=<path> option to specify the location.
944 As an example I personally use the following options to configure
949 --enable-kernel=2.4.0
953 --with-headers=/home/jes/linux/include
958 Jes Sorensen <jes@linuxcare.com>,
960 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
974 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
976 * New xdr functions are added; some rpc functions are now 64bit clean.
978 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
980 * Fixed known incompatibilities with glibc 2.0.
982 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
984 * Optimized a number of functions (especially the ELF dynamic loader).
986 * Update timezone data files.
988 * lots of charmaps corrections
990 * some new locale definitions and charmaps
995 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
996 conform to POSIX member type requirements. Symbol versions have been
997 adjusted as needed within the library, and for direct use by applications,
998 but there is potential for problems if third-party libraries use
999 struct timeval as part of their interface. This does not present
1000 a problem for X and other "essential" system libraries.
1002 * An additional locale model to support C++ Standard Library locale
1003 model and probably more was implemented by Ulrich Drepper.
1005 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1008 * Miles Bader provided the `argp' function family to support hierachical
1009 command line argument parsing, layered on top of getopt.
1011 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1013 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1016 * scanf recognizes the %a and %A format for scanning floating point numbers.
1018 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1019 information and interfaces for the available integer types.
1021 * about 130 new math functions were added to implement the ISO C9x math
1024 * the new header <complex.h> contains definitions of the complex math
1025 functions from ISO C 9X.
1027 * the new header <tgmath.h> defines generic macros to use complex or
1028 real valued functions.
1030 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1032 * Andreas Jaeger provided a test suite for the math library.
1034 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1036 * Ulrich Drepper added character set conversion functions (iconv).
1038 * Optimized string functions have been added.
1040 * The localedata addon is now part of glibc.
1042 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1044 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1045 daemon for NSS (nscd).
1047 Missing a better place here are some numbers on improvements. Under
1048 Linux 2.1.125 un-tar-ing the kernel sources takes
1052 using local files 12.19s 6.88s 22.91s
1054 using NIS 13.92s 8.91s 26.34s
1056 using NIS & nscd 10.37s 7.34s 25.30s
1058 using NIS+ 27.57s 30.37s 640.46s
1060 using NIS+ & nscd 10.25s 7.83s 26.51s
1062 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1064 Keep in mind that non-namelookup related operations dominate above times.
1065 It was just a common complain that using NIS+ unpacking the kernel is
1068 [1] The old nscd implementation is not available anymore since it was
1069 distributed with glibc up to version 2.0.98 and thus is now replaced.
1071 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1073 * Mark Kettenis provided a Hesiod NSS module.
1075 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1076 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1078 * rcmd can now handle netgroups (Dick Streefland).
1080 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1083 * Support for the IPv6 protocol has been added to the socket API, as per the
1084 latest draft standards.
1086 * Support for Linux 2.2 has been added.
1088 * Interface changes relative to the latest 2.0.x release:
1089 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1090 addseverity NEW: Unix98
1091 alphasort64 NEW: LFS
1092 argp_err_exit_status NEW: argp, GNU ext
1093 argp_error NEW: argp, GNU ext
1094 argp_failure NEW: argp, GNU ext
1095 argp_help NEW: argp, GNU ext
1096 argp_parse NEW: argp, GNU ext
1097 argp_program_bug_address NEW: argp, GNU ext
1098 argp_program_version NEW: argp, GNU ext
1099 argp_program_version_hook NEW: argp, GNU ext
1100 argp_state_help NEW: argp, GNU ext
1101 argp_usage NEW: argp, GNU ext
1102 authdes_create NEW: Secure RPC
1103 authdes_getucred NEW: Secure RPC
1104 authdes_pk_create NEW: Secure RPC
1105 backtrace NEW: GNU ext.
1106 backtrace_symbols NEW: GNU ext.
1107 backtrace_symbols_fd NEW: GNU ext.
1109 cacosf NEW: ISO C 9x
1110 cacosh NEW: ISO C 9x
1111 cacoshf NEW: ISO C 9x
1112 cacoshl NEW: ISO C 9x
1113 cacosl NEW: ISO C 9x
1120 casinf NEW: ISO C 9x
1121 casinh NEW: ISO C 9x
1122 casinhf NEW: ISO C 9x
1123 casinhl NEW: ISO C 9x
1124 casinl NEW: ISO C 9x
1126 catanf NEW: ISO C 9x
1127 catanh NEW: ISO C 9x
1128 catanhf NEW: ISO C 9x
1129 catanhl NEW: ISO C 9x
1130 catanl NEW: ISO C 9x
1131 cbc_crypt NEW: Secure RPC
1135 ccoshf NEW: ISO C 9x
1136 ccoshl NEW: ISO C 9x
1142 cimagf NEW: ISO C 9x
1143 cimagl NEW: ISO C 9x
1144 clearerr_locked REMOVED
1145 clntunix_create NEW: sunrpc ext
1147 clog10 NEW: ISO C 9x
1148 clog10f NEW: ISO C 9x
1149 clog10l NEW: ISO C 9x
1159 cprojf NEW: ISO C 9x
1160 cprojl NEW: ISO C 9x
1162 crealf NEW: ISO C 9x
1163 creall NEW: ISO C 9x
1168 csinhf NEW: ISO C 9x
1169 csinhl NEW: ISO C 9x
1172 csqrtf NEW: ISO C 9x
1173 csqrtl NEW: ISO C 9x
1177 ctanhf NEW: ISO C 9x
1178 ctanhl NEW: ISO C 9x
1180 des_setparity NEW: Secure RPC
1181 ecb_crypt NEW: Secure RPC
1182 endutxent NEW: Unix98
1184 exp10f NEW: ISO C 9x
1185 exp10l NEW: ISO C 9x
1189 fattach NEW: STREAMS
1190 fdetach NEW: STREAMS
1194 feclearexcept NEW: ISO C 9x
1195 fegetenv NEW: ISO C 9x
1196 fegetexceptflag NEW: ISO C 9x
1197 fegetround NEW: ISO C 9x
1198 feholdexcept NEW: ISO C 9x
1200 feraiseexcept NEW: ISO C 9x
1201 ferror_locked REMOVED
1202 fesetenv NEW: ISO C 9x
1203 fesetexceptflag NEW: ISO C 9x
1204 fesetround NEW: ISO C 9x
1205 fetestexcept NEW: ISO C 9x
1206 feupdateenv NEW: ISO C 9x
1207 fflush_locked REMOVED
1211 fgets_unlocked NEW: GNU ext.
1212 fileno_locked REMOVED
1224 fputc_locked REMOVED
1225 fputs_unlocked NEW: GNU ext.
1226 fread_unlocked NEW: GNU ext.
1231 fstatvfs NEW: Unix98
1235 ftruncate64 NEW: LFS
1237 fwrite_unlocked NEW: GNU ext.
1238 gai_strerror NEW: IPv6
1242 getchar_locked REMOVED
1244 getdate_err NEW: Unix98
1245 getdate_r NEW: GNU ext.
1247 getnameinfo NEW: IPv6
1248 getnetname NEW: Secure RPC
1249 getpmsg NEW: STREAMS
1250 getpt NEW: Unix98 PTY
1251 getrlimit64 NEW: LFS
1252 getutxent NEW: Unix98
1253 getutxid NEW: Unix98
1254 getutxline NEW: Unix98
1255 glob64 NEW: GNU ext.
1256 globfree64 NEW: GNU ext.
1257 gnu_get_libc_release NEW: GNU ext.
1258 gnu_get_libc_version NEW: GNU ext.
1259 grantpt NEW: Unix98 PTY
1260 host2netname NEW: Secure RPC
1262 iconv_close NEW: iconv
1263 iconv_open NEW: iconv
1264 if_freenameindex NEW: IPv6
1265 if_indextoname NEW: IPv6
1266 if_nameindex NEW: IPv6
1267 if_nametoindex NEW: IPv6
1268 in6addr_any NEW: IPv6
1269 in6addr_loopback NEW: IPv6
1270 inet6_isipv4mapped NEW: IPv6
1271 isastream NEW: STREAMS
1272 iswblank NEW: GNU ext.
1273 key_decryptsession NEW: Secure RPC
1274 key_decryptsession_pk NEW: Secure RPC
1275 key_encryptsession NEW: Secure RPC
1276 key_encryptsession_pk NEW: Secure RPC
1277 key_gendes NEW: Secure RPC
1278 key_get_conv NEW: Secure RPC
1279 key_secretkey_is_set NEW: Secure RPC
1280 key_setnet NEW: Secure RPC
1281 key_setsecret NEW: Secure RPC
1282 llrint NEW: ISO C 9x
1283 llrintf NEW: ISO C 9x
1284 llrintl NEW: ISO C 9x
1285 llround NEW: ISO C 9x
1286 llroundf NEW: ISO C 9x
1287 llroundl NEW: ISO C 9x
1292 lrintf NEW: ISO C 9x
1293 lrintl NEW: ISO C 9x
1294 lround NEW: ISO C 9x
1295 lroundf NEW: ISO C 9x
1296 lroundl NEW: ISO C 9x
1298 makecontext NEW: Unix98
1299 mempcpy NEW: GNU ext.
1302 modify_ldt NEW: kernel
1306 nearbyint NEW: ISO C 9x
1307 nearbyintf NEW: ISO C 9x
1308 nearbyintl NEW: ISO C 9x
1309 netname2host NEW: Secure RPC
1310 netname2user NEW: Secure RPC
1311 nexttoward NEW: ISO C 9x
1312 nexttowardf NEW: ISO C 9x
1313 nexttowardl NEW: ISO C 9x
1317 passwd2des NEW: Secure RPC
1319 pow10f NEW: GNU ext.
1320 pow10l NEW: GNU ext.
1323 printf_size NEW: GNU ext.
1324 printf_size_info NEW: GNU ext.
1325 profil_counter REMOVED
1326 pthread_mutexattr_getkind_np REPLACED
1327 pthread_mutexattr_setkind_np REPLACED
1328 ptsname NEW: Unix98 PTY
1329 ptsname_r NEW: Unix98 PTY
1331 putchar_locked REMOVED
1332 putgrent NEW: GNU ext.
1334 putpmsg NEW: STREAMS
1335 pututxline NEW: Unix98
1339 readdir64_r NEW: LFS
1340 remquo NEW: ISO C 9x
1341 remquof NEW: ISO C 9x
1342 remquol NEW: ISO C 9x
1344 roundf NEW: ISO C 9x
1345 roundl NEW: ISO C 9x
1347 scalbln NEW: ISO C 9x
1348 scalblnf NEW: ISO C 9x
1349 scalblnl NEW: ISO C 9x
1351 sendfile NEW: kernel
1352 setcontext NEW: Unix98
1353 setrlimit64 NEW: LFS
1354 setutxent NEW: Unix98
1356 sigignore NEW: Unix98
1357 sigqueue NEW: POSIX.1b
1358 sigrelse NEW: Unix98
1359 sigset NEW: POSIX.1b
1360 sigtimedwait NEW: POSIX.1b
1361 sigwaitinfo NEW: POSIX.1b
1362 sincos NEW: GNU ext.
1363 sincosf NEW: GNU ext.
1364 sincosl NEW: GNU ext.
1368 strcasestr NEW: GNU ext.
1369 strtoimax NEW: ISO C 9x
1370 strtoumax NEW: ISO C 9x
1371 strverscmp NEW: GNU ext.
1372 svcauthdes_stats NEW: Secure RPC
1373 svcunix_create NEW: sunrpc etx
1374 svcunixfd_create NEW: sunrpc ext
1375 swapcontext NEW: Unix98
1376 tcgetsid NEW: Unix98 PTY
1377 tdestroy NEW: GNU ext.
1378 tgamma NEW: ISO C 9x
1379 tgammaf NEW: ISO C 9x
1380 tgammal NEW: ISO C 9x
1384 truncf NEW: ISO C 9x
1385 truncl NEW: ISO C 9x
1387 unlockpt NEW: Unix98 PTY
1388 updwtmpx NEW: Unix98
1389 user2netname NEW: Secure RPC
1390 utmpxname NEW: Unix98
1391 versionsort NEW: GNU ext.
1392 versionsort64 NEW: GNU ext.
1394 wcscasecmp NEW: GNU ext.
1395 wcsncasecmp NEW: GNU ext.
1396 wcsnlen NEW: GNU ext.
1397 wcstoimax NEW: ISO C 9x
1398 wcstoll NEW: ISO C 9x
1399 wcstoull NEW: ISO C 9x
1400 wcstoumax NEW: ISO C 9x
1402 wordexp NEW: POSIX.2
1403 wordfree NEW: POSIX.2
1404 write_profiling REMOVED
1405 xdecrypt NEW: Secure RPC
1406 xdr_authdes_cred NEW: Secure RPC
1407 xdr_authdes_verf NEW: Secure RPC
1408 xdr_cryptkeyarg NEW: Secure RPC
1409 xdr_cryptkeyarg2 NEW: Secure RPC
1410 xdr_cryptkeyres NEW: Secure RPC
1411 xdr_getcredres NEW: Secure RPC
1412 xdr_key_netstarg NEW: Secure RPC
1413 xdr_key_netstres NEW: Secure RPC
1414 xdr_keybuf NEW: Secure RPC
1415 xdr_keystatus NEW: Secure RPC
1416 xdr_netnamestr NEW: Secure RPC
1417 xdr_sizeof NEW: Secure RPC
1418 xdr_unixcred NEW: sunrpc ext
1419 xencrypt NEW: Secure RPC
1420 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1431 * inet_ntoa is thread-safe
1433 * updwtmp is moved from libutil to libc
1435 * rewrite of cbrt function
1437 * update of timezone data
1451 * add atoll function
1453 * fix complex problems in Berkeley DB code
1455 * fix math functions
1459 * fixed lots of header problems (especially Linux/GNU specific)
1461 * dynamic loader preserves all registers
1463 * Roland McGrath provided support for handling of auxiliary objects in
1464 the ELF dynamic loader.
1466 * support for parallel builds is improved
1470 * GNU extensions are no longer declared by default. To enable them you
1471 must define the macro `_GNU_SOURCE' in your program or compile with
1474 * The library has changed from using GNU ld symbol aliases to using weak
1475 symbols where available. The ELF object file format supports weak
1476 symbols; GNU ld also supports weak symbols in the a.out format. (There
1477 is also now support for other GNU ld extensions in ELF. Use the
1478 `--with-elf' option to configure to indicate you have ELF, and
1479 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1480 of many files which contained only symbol aliases, reducing the size of
1481 the source and the compiled library; many other files were renamed to
1482 less cryptic names previously occupied by the symbol alias files.
1483 There is a new header file <elf.h> for programs which operate on
1484 files in the ELF format.
1486 * Converted to Autoconf version 2, so `configure' has more options.
1487 Run `configure --help' to see the details.
1489 * The library can now be configured to build profiling, highly-optimized
1490 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1491 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1492 `configure' enable building these extra libraries. The shared library is
1493 built by default when using both ELF and GNU ld. When shared libraries
1494 are enabled, the new library `-ldl' is available for arbitrary run-time
1495 loading of shared objects; its interface is defined in <dlfcn.h>. The
1496 new header file <link.h> gives access to the internals of the run-time
1497 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1498 application of same name on other systems and it provides information
1499 about dynamically linked binaries.
1501 * The C library now provides the run-time support code for profiling
1502 executables compiled with `-pg'. Programs can control the profiling code
1503 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1504 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1505 the support for this file format was contributed by David Mosberger-Tang.
1507 * The math code has been replaced with a math library based on fdlibm from
1508 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1509 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1510 functions. The math functions now reside in a separate library, so
1511 programs using them will need to use `-lm' their linking commands.
1513 * John C. Bowman contributed optimized ix87 assembler inline functions.
1515 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1516 mechanism similar to that found in Solaris 2. This is now used for the
1517 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1518 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1519 file controls what services are used for each individual database. This
1520 works by loading shared libraries with names specified in `nsswitch.conf',
1521 so service modules can be changed or added at any time without even
1522 relinking any program. Currently there are the file, db, and NIS based
1523 NSS services available.
1525 * The new functions `strtoq' and `strtouq' parse integer values from
1526 strings, like `strtol' and `strtoul', but they return `long long int' and
1527 `unsigned long long int' values, respectively (64-bit quantities).
1529 * The new functions `strtof' and `strtold' parse floating-point values from
1530 strings, like `strtod', but they return `float' and `long double' values,
1531 respectively (on some machines `double' and `long double' are the same).
1533 * Ulrich Drepper has contributed new implementations of the floating-point
1534 printing and reading code used in the `printf' family of functions and
1535 `strtod', `strtof', and `strtold'. These new functions are perfectly
1536 accurate, and much faster than the old ones.
1538 * The implementation of the POSIX locale model was completely rewritten by
1539 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1540 to compile the POSIX locale definition.
1542 * The former dummy implementations of the strcoll and strxfrm function are
1543 now replaced by fully functional code contributed by Ulrich Drepper. The
1544 collation information comes from the POSIX locale definitions.
1546 * The new header <langinfo.h> defines an interface for accessing
1547 various locale-dependent data (using the locale chosen with `setlocale').
1549 * Ulrich Drepper has contributed a new suite of functions for operation on
1550 wide-character and multibyte-character strings, in <wchar.h>;
1551 and classification and case conversion of wide characters, in <wctype.h>.
1552 These new functions are conforming to the ISO C, Amendement 1 specification.
1554 * There is now a second implementation of the standard I/O library available.
1555 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1556 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1558 * You can now use positional parameter specifications in format strings
1559 for the `printf' and `scanf' families of functions. For example,
1560 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1561 ``Number 6, Mr Jones''. This is mainly useful when providing different
1562 format strings for different languages, whose grammars may dictate
1563 different orderings of the values being printed. To support this
1564 feature, the interface for `register_printf_handler' has changed; see
1565 the header file <printf.h> for details.
1567 * The `printf' and `scanf' families of functions now understand a new
1568 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1569 to group numbers as indicated by the locale; for `scanf' and friends, this
1570 says to accept as valid only a number with all the proper grouping
1571 separators in the right places. In the default "C" locale, numbers are
1572 not grouped; but locales for specific countries will define the usual
1573 conventions (i.e. separate thousands with `,' in the US locale).
1575 * The pgrp functions have been regularized, slightly incompatibly but much
1576 less confusingly. The core functions are now `getpgid' and `setpgid',
1577 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1578 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1579 provided for compatibility. There is no longer an incompatible `getpgrp'
1580 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1582 * The new header file <fts.h> and suite of functions simplify programs that
1583 operate on directory trees. This code comes from 4.4 BSD.
1585 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1586 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1587 NSS scheme used in glibc.
1589 * There is a new malloc debugging hook `__memalign_hook'.
1591 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1592 `unsigned int' in <sys/types.h>. These are for compatibility only and
1593 their use is discouraged.
1595 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1596 done differently, so that it works even without GNU ld.
1598 * New function `euidaccess' checks allowed access to a file like `access',
1599 but using the effective IDs instead of the real IDs.
1601 * The time zone data files have been updated for the latest and greatest
1602 local time conventions of the countries of the world.
1604 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1607 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1608 for formatting floating-point numbers. They are provided only for
1609 compatibility; new programs should use `sprintf' instead. There are
1610 also equivalent function for the `long double' floating-point type and
1611 all functions also exist in a reentrant form.
1613 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1614 functions for maintaining the login-record files (primarily of use to
1615 system programs such as `login'), and convenient functions for
1616 allocating and initializing a pseudo-terminal (pty) device.
1618 * Ulrich Drepper has contributed new support for System V style
1619 shared memory and IPC on systems that support it.
1621 * Ulrich Drepper has contributed several miscellaneous new functions found
1622 in System V: The `hsearch' family of functions provide an effective
1623 implementation of hash tables; `a64l' and `l64a' provide a very simple
1624 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1627 * Ulrich Drepper has contributed new reentrant counterparts for the
1628 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1630 * Ulrich Drepper has contributed new, highly-optimized versions of several
1631 string functions for the i486/Pentium family of processors.
1633 * Ulrich Drepper has updated the Linux-specific code, based largely
1634 on work done in Hongjiu Lu's version of GNU libc for Linux.
1635 The GNU library now supports Linux versions 2.0.10 and later,
1636 using the ELF object file format (i[3456]86-*-linux).
1638 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1640 * David Mosberger-Tang and Richard Henderson have ported the C library
1641 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1642 dynamic linking support for ELF/Alpha.
1644 * Richard Henderson contributed several Alpha optimized assembler function
1645 for arithmetic and string handling.
1647 * Ulrich Drepper has contributed a new set of message catalog functions to
1648 support multiple languages using the <libintl.h> interface, for use with
1649 his new package GNU gettext. Translation volunteers have contributed
1650 catalogs of the library's messages in Spanish, German, and Korean.
1652 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1653 program and the `catgets' function for reading the catalog files it
1654 creates. (The <libintl.h> interface is preferred; we include the
1655 <nl_types.h> interface using `catgets' only for source compatibility with
1656 programs already written to use it.)
1658 * New header file <values.h> gives SVID-compatible names for <limits.h>
1661 * Various new macros, declarations, and small header files for compatibility
1664 * New function `group_member' is a convenient way to check if a process has
1665 a given effective group ID.
1667 * When using GCC 2.7 and later, the socket functions are now declared in a
1668 special way so that passing an argument of type `struct sockaddr_in *',
1669 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1670 `struct sockaddr *' type, does not generate a type-clash warning.
1672 * New function `error' declared in header file <error.h> is a convenient
1673 function for printing error messages and optionally exiting; this is the
1674 canonical function used in GNU programs. The new functions `err', `warn',
1675 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1676 doing the same thing.
1678 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1679 POSIX.2 `glob' function to do ~ and {...} expansion.
1681 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1682 `clearenv' which is used in POSIX.9 is also available.
1684 * New function `getsid' returns session ID number on systems that support it.
1686 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1687 files <db.h> and <mpool.h> provide a rich set of functions for several
1688 types of simple databases stored in memory and in files, and <ndbm.h> is
1689 an old `ndbm'-compatible interface using the `db' functions. Link with
1690 `-ldb' to get these functions.
1692 * New macro `strdupa' copies a string like `strdup', but uses local stack
1693 space from `alloca' instead of dynamic heap space from `malloc'.
1695 * New function `strnlen' is like `strlen' but searches only a given maximum
1696 number of characters for the null terminator. `stpncpy', `strndup' and
1697 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1700 * New function `statfs' in header <sys/statfs.h>.
1702 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1703 provide convenient functions for operating on blocks of null-terminated
1706 * A new suite of functions in <utmp.h> handle all the details of reading
1707 and writing the utmp file.
1709 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1712 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1713 completely POSIX compliant and also implemented the extended functionality
1714 to handle alternate digit representation and alternate era date formats.
1716 * Ulrich Drepper provided an implementation of the `strptime' function
1717 defined in XPG4.2 which transforms a string into a `struct tm' value.
1719 * Paul Eggert provided the tzselect shell script as part of the timezone
1720 code. The shell script makes it easy to select the correct timezone
1723 * The implementation of the malloc family of functions is completely replaced
1724 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1725 The implementation uses the mmap function (if available) and it is
1726 optimized for the use in multi threaded programs.
1728 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1729 functions. This new functionality is usable by specifying a special
1730 salt string and it is compatible with implementation on *BSD systems.
1732 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1733 `getsubopt' to handle second level command line options, `bsd_signal'
1734 to access BSD style `signal' functionality, the obsolete `regexp' style
1737 * the `lchown' function is available on system which support this
1740 * The implementation of the shadow password handling function was contributed
1743 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1745 * POSIX.1g support was added. The <sys/select.h> header is available,
1746 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1747 implementation of `getaddrinfo'.
1751 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1753 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1754 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1756 * The new function `daemon' from 4.4 BSD is useful for server programs that
1757 want to put themselves in the background.
1759 * Joel Sherrill has contributed support for several standalone boards that
1760 run without an operating system.
1762 * `printf', `scanf' and friends now accept a `q' type modifier for long
1763 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1765 * All of the code taken from BSD (notably most of the math and networking
1766 routines) has been updated from the BSD 4.4-Lite release.
1768 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1770 * The new functions `getdomainname' and `setdomainname' fetch or change the
1771 YP/NIS domain name. These are system calls which exist on systems which
1774 * The time zone data files have been updated for the latest international
1777 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1778 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1782 * The C library now includes support for Sun RPC, from Sun's free
1783 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1784 are included. (There is still no support for YP.)
1786 * Tom Quinn has contributed a port of the C library to SGI machines running
1787 Irix 4 (mips-sgi-irix4).
1789 * The new `lockf' function is a simplified interface to the locking
1790 facilities of `fcntl', included for compatibility.
1792 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1794 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1796 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1799 * The error message printed by `assert' for a failed assertion now includes
1800 the name of the program (if using GNU ld) and the name of the calling
1801 function (with versions of GCC that support this).
1803 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1805 * The library now includes the <sys/mman.h> header file and memory
1806 management functions `mmap', `munmap', `mprotect', `msync', and
1807 `madvise', on systems that support those facilities.
1809 * The interface for `mcheck' has changed slightly: the function called to
1810 abort the program when an allocation inconsistency is detected now takes
1811 an argument that indicates the type of failure. The new function
1812 `mprobe' lets you request a consistency check for a particular block at
1813 any time (checks are normally done only when you call `free' or `realloc'
1816 * It is now possible to easily cross-compile the C library, building on one
1817 system a library to run on another machine and/or operating system. All
1818 you need to do is set the variable `HOST_CC' in `configparms' to the
1819 native compiler for programs to run on the machine you are building on (a
1820 few generator programs are used on Unix systems); set `CC' to the
1823 * The new function `fexecve' (only implemented on the GNU system) executes
1824 a program file given a file descriptor already open on the file.
1828 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1829 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1831 * You can set the variable `libprefix' in `configparms' to specify a prefix
1832 to be prepended to installed library files; this makes it easy to install
1833 the GNU C library to be linked as `-lgnuc' or whatever.
1835 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1836 copies a limited number of characters from a string, and returns the
1837 address of the last character written.
1839 * You no longer need to check for whether the installed `stddef.h' is
1840 compatible with the GNU C library. configure now checks for you.
1842 * You can now define a per-stream `fileno' function to convert the
1843 stream's cookie into an integral file descriptor.
1845 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1846 allocates zero bytes of storage, and returns a unique pointer which
1847 you can pass to `realloc' or `free'. The behavior is undefined if
1848 you dereference this pointer.
1850 * The C library now runs on Sony NEWS m68k machines running either
1851 NewsOS 3 or NewsOS 4.
1853 * The new `syscall' function is a system-dependent primitive function
1854 for invoking system calls. It has the canonical behavior on Unix
1855 systems, including unreliable return values for some calls (such as
1856 `pipe', `fork' and `getppid').
1858 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1859 to `EAGAIN', which is the preferred name. On systems whose kernels
1860 use two distinct codes, the C library now translates EWOULDBLOCK to
1861 EAGAIN in every system call function.
1865 * The GNU C Library Reference Manual is now distributed with the library.
1866 `make dvi' will produce a DVI file of the printed manual.
1867 `make info' will produce Info files that you can read on line using C-h i
1868 in Emacs or the `info' program.
1869 Please send comments on the manual to bug-glibc-manual@gnu.org.
1871 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1873 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1875 * Jason Merrill has contributed a port to the Sequent Symmetry running
1876 Dynix version 3 (i386-sequent-dynix).
1878 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1879 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1881 * New function `memory_warnings' lets you arrange to get warnings when
1882 malloc is running out of memory to allocate, like Emacs gives you.
1884 * The C library now contains the relocating allocator used in Emacs 19 for
1885 its editing buffers. This allocator (ralloc) minimizes allocation
1886 overhead and fragmentation by moving allocated regions around whenever it
1887 needs to. You always refer to a ralloc'd region with a "handle" (a
1888 pointer to a pointer--an object of type `void **').
1890 * There is a new `printf' format: `%m' gives you the string corresponding
1891 to the error code in `errno'.
1893 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1894 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1895 pass, the `a' modifier says to fill in a `char **' you pass with a
1898 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1899 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1900 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1902 * `mkstemp' is a traditional Unix function to atomically create and open a
1903 uniquely-named temporary file.
1907 * The standard location for the file that says what the local timezone is
1908 has changed again. It is now `/usr/local/etc/localtime' (or more
1909 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1911 * The distribution no longer contains any files with names longer than 14
1914 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1915 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1917 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1921 * The configuration process has changed quite a bit. The `configure'
1922 script is now used just like the configuration scripts for other GNU
1923 packages. The `sysdeps' directory hierarchy is much rearranged.
1924 The file `INSTALL' explains the new scheme in detail.
1926 * The header files no longer need to be processed into ANSI C and
1927 traditional C versions. There is just one set of files to install, and
1928 it will work with ANSI or old C compilers (including `gcc -traditional').
1930 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1931 MIPS DECStation running Ultrix 4.
1933 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1934 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1935 made itself into a shared library.
1937 * Yet further improved support for the i386, running 4.3 BSD-like systems
1938 (such as Mach 3 with the Unix single-server), or System V.
1940 * New function `strncasecmp' to do case-insensitive string comparison
1941 with limited length.
1943 * New function `strsep' is a reentrant alternative to `strtok'.
1945 * New functions `scandir' and `alphasort' for searching directories.
1947 * New function `setenv' is a better interface to `putenv'.
1949 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1950 function for traversing a directory tree.
1952 * The GNU obstack package is now also part of the C library.
1953 The new function `open_obstack_stream' creates a stdio stream that
1954 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1955 formatted output directly to an obstack.
1957 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1958 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1960 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1962 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1963 things to your strings.
1965 * There are some new test programs: test-fseek, testmb, and testrand.
1967 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1968 These ports are not finished, but are a good starting place for really
1969 supporting those systems.
1971 * `/etc/localtime' is now the standard location for the file that says what
1972 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1973 This follows the general principle that `/etc' is the place for all local
1974 configuration files.
1976 * The C library header files now use `extern "C"' when used by the C++
1977 compiler, so the C library should now work with C++ code.
1979 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1980 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1983 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1984 function which uses the `merge sort' algorithm, and is said to be
1985 significantly faster than the old GNU `qsort' function. Merge sort is
1986 now the standard `qsort' function. The new algorithm can require a lot
1987 of temporary storage; so, the old sorting function is called when the
1988 required storage is not available.
1990 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1991 provides the Unix `crypt' function, plus some other entry points.
1993 * The code and header files taken from 4.4 BSD have been updated with the
1994 latest files released from Berkeley.
1996 ----------------------------------------------------------------------
1997 Copyright information:
1999 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2001 Permission is granted to anyone to make or distribute verbatim copies
2002 of this document as received, in any medium, provided that the
2003 copyright notice and this permission notice are preserved,
2004 thus giving the recipient permission to redistribute in turn.
2006 Permission is granted to distribute modified versions
2007 of this document, or of portions of it,
2008 under the above conditions, provided also that they
2009 carry prominent notices stating who last changed them.
2012 version-control: never