1 GNU C Library NEWS -- history of user-visible changes. 2011-5-9
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 11258, 11487, 11532, 11578, 11653, 11668, 11724, 11945, 11947, 12158,
13 12178, 12200, 12346, 12393, 12420, 12445, 12449, 12454, 12460, 12469,
14 12489, 12509, 12510, 12518, 12541, 12545, 12551, 12583, 12587, 12597,
15 12611, 12631, 12650, 12653, 12655, 12660, 12681, 12685, 12711, 12713,
16 12714, 12717, 12723, 12734, 12738
18 * The RPC implementation in libc is obsoleted. Old programs keep working
19 but new programs cannot be linked with the routines in libc anymore.
20 Programs in need of RPC functionality must be linked against TI-RPC.
21 The TI-RPC implemtation is IPv6 enabled and there are other benefits.
23 Visible changes of this change include (obviously) the inability to link
24 programs using RPC functions without referencing the TI-RPC library and the
25 removal of the RPC headers from the glibc headers.
26 Implemented by Ulrich Drepper.
28 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
31 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
32 yue_HK, lij_IT, mhr_RU
36 * The following bugs are resolved with this release:
38 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11611, 11640,
39 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979, 12005,
40 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113, 12140,
41 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348, 12378,
44 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
46 * POWER7 optimizations: memset, memcmp, strncmp
48 * New optimized string functions for x86-64: strnlen (SSE2),
49 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
50 Implemented by Ulrich Drepper.
54 * The following bugs are resolved with this release:
56 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
57 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
58 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
59 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
60 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
61 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
62 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
63 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
65 * New interfaces: pthread_getname_np, pthread_setname_np
67 * New Linux interface: recvmmsg
69 * STT_GNU_IFUNC implemented for Sparc by David Miller.
71 * The dynamic linker now recognizes supported ABI versions from the
72 EI_ABIVERSION field in the ELF header.
73 Implemented by Ulrich Drepper.
75 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
76 will not be used to fill in password fields in the passwd.byname replies.
77 Instead it is used to synthesize the shadow.byname table, should it be
78 missing. This is a useful mode in some installations involving Solaris.
79 Implemented by Ulrich Drepper.
81 * New locales: kok_IN, sq_MK, cv_RU
85 * The following bugs are resolved with this release:
87 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
88 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
89 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
90 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
91 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
92 10789, 10817, 10823, 10840, 10847
94 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
96 Implemented by Ulrich Drepper.
98 * Checking version of longjmp added that fails if an uninitialized stack
99 frame would be created. Implemented by Ulrich Drepper.
101 * STT_GNU_IFUNC is now supported in static executables.
102 Implemented by H.J. Lu.
104 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
106 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
107 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
108 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
109 Contributed by H.J. Lu.
111 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
112 Implemented by Ulrich Drepper.
114 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
116 Contributed by H.J. Lu.
118 * Support for fma instruction in AVX on x86-64.
119 Implemented by H.J. Lu and Ulrich Drepper.
121 * AVX support in x86-64 auditing support in ld.so.
122 Implemented by H.J. Lu.
124 * STB_GNU_UNIQUE support added.
125 Implemented by Ulrich Drepper.
127 * Implement second fallback mode for optimized DNS lookup for even more
128 broken environments. If two requests from the same port are not
129 handled correctly close the socket and open a new one before sending
130 the second request. The 'single-request-reopen' option in /etc/resolv.conf
131 can be used to select this mode right away, instead of rediscovering the
132 necessity is every process again.
133 Implemented by Ulrich Drepper.
135 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
136 Implemented by Adam Tkac.
138 * Optimized iconv conversions for S390x.
139 Implemented by Andreas Krebbel.
141 * Using condvars with PI mutexes is now more efficient due to kernel
142 support for requeueing to PI futexes. NPTL support added for x86-64.
143 Implemented by Ulrich Drepper.
145 * New locales: ps_AF, my_MM
149 * The following bugs are resolved with this release:
151 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
152 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
153 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
154 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
155 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
157 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
158 Implemented by Ulrich Drepper.
160 * New Linux interfaces: accept4, fallocate, fallocate64.
161 Implemented by Ulrich Drepper.
163 * Correct declarations of string function when used in C++ code. This
164 could lead to compile errors for invalid C++ code.
166 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
169 * New POSIX 2008 interface: psiginfo
170 Implemented by Ulrich Drepper.
172 * New ISO C++1x interfaces: quick_exit, at_quick_exit
173 Implemented by Ulrich Drepper.
175 * Support for selecting between multiple function definitions at runtime
176 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
178 * The libcrypt library can now use the hash function implementations in
179 NSS. Implemented by Ulrich Drepper.
181 * The malloc implementation can be compiled to be less memory efficient
182 but higher performing in multi-threaded programs.
183 Implemented by Ulrich Drepper.
185 * New locales: nan_TW@latin, ks_IN
187 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
188 Implemented by Ulrich Drepper.
190 * Extended printf hook support. It is possible to use user-defined types
191 and extend existing format specifiers.
192 Implemented by Ulrich Drepper.
194 * Handling for group shadow files has been added.
195 Implemented by Ulrich Drepper.
197 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
198 servers (the case, e.g., for some people using the built-in DNS
199 server in ADSL modems/routers). There is a once-per-process timeout
200 in case of a broken server. To avoid it, users can run nscd or put
201 'options single-request' in /etc/resolv.conf.
202 Implemented by Ulrich Drepper.
206 * The following bugs are resolved with this release:
208 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
209 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
210 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
211 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
212 6968, 6974, 6980, 6995, 7008, 7009, 7029
214 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
215 up at the same time. Implemented by Ulrich Drepper.
217 * TLS descriptors for LD and GD on x86 and x86-64.
218 Implemented by Alexandre Oliva.
220 * getaddrinfo now handles DCCP and UDPlite.
221 Implemented by Ulrich Drepper.
223 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
224 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
225 Implemented by Ulrich Drepper.
227 * New implementation of memmem, strstr, and strcasestr which is O(n).
228 Implemented by Eric Blake.
230 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
232 * Implement "e" option for popen to open file descriptor with the
233 close-on-exec flag set. Implemented by Ulrich Drepper.
235 * Implement "b" mode for fmemopen. In this mode writes writes don't
236 implicitly add a NUL byte and seeks from the end of the buffer really
237 use the buffer end, not the string length as the basis.
238 Implemented by Ulrich Drepper.
240 * Many functions, exported and internal, now atomically set the close-on-exec
241 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
243 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
245 Implemented by Pravin Satpute.
247 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
251 * The following bugs are resolved with this release:
253 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
254 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
255 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
256 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
257 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
258 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
259 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
261 * New locales: bo_CN, bo_IN, shs_CA.
263 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
265 * Sorting rules for some Indian languages (Devanagari and Gujarati).
266 Implemented by Pravin Satpute.
268 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
270 * nscd caches now all timeouts for DNS entries
271 Implemented by Ulrich Drepper.
273 * nscd is more efficient and wakes up less often.
274 Implemented by Ulrich Drepper.
276 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
277 vdprintf, and obstack_vprintf.
278 Implemented by Jakub Jelinek.
280 * Faster memset for x86-64.
281 Implemented by Harsha Jagasia and H.J. Lu.
283 * Faster memcpy on x86.
284 Implemented by Ulrich Drepper.
286 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
287 Implemented by Ulrich Drepper.
289 * Faster sqrt and sqrtf implemention for some PPC variants.
290 Implemented by Stephen Munroe.
294 * The following bugs are resolved with this release:
296 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
297 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
298 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
299 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
300 5071, 5103, 5104, 5112, 5113, 5184, 5186
302 * More checking functions: fread, fread_unlocked, open*, mq_open.
303 Implemented by Jakub Jelinek and Ulrich Drepper.
305 * Extend fortification to C++. Implemented by Jakub Jelinek.
307 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
308 by not recognizing 'a' as a modifier when those specs are requested.
309 Implemented by Jakub Jelinek.
311 * PPC optimizations to math and string functions.
312 Implemented by Steven Munroe.
314 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
315 options to be passed. Implemented by Ulrich Drepper.
317 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
319 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
320 Implemented by Ulrich Drepper.
322 * Handle private futexes in the NPTL implementation.
323 Implemented by Jakub Jelinek and Ulrich Drepper.
325 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
326 Implemented by Roland McGrath and Ulrich Drepper.
328 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
330 * SHA-256 and SHA-512 based password encryption.
331 Implemented by Ulrich Drepper.
333 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
334 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
337 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
338 Implemented by Ulrich Drepper.
342 * The following bugs are resolved with this release:
344 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
345 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
346 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
347 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
348 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
349 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
350 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
353 * New Linux interfaces: epoll_pwait, sched_getcpu.
355 * New generic interfaces: strerror_l.
357 * nscd can now cache the services database. Implemented by Ulrich Drepper.
361 * The following bugs are resolved with this release:
363 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
364 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
365 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
366 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
367 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
368 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
369 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
370 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
371 3225, 3251, 3252, 3253, 3273
373 * For Linux, the sorting of addresses returned by getaddrinfo now also
374 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
375 Implemented by Ulrich Drepper.
377 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
378 Implemented by Ulrich Drepper.
380 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
382 * New iconv module for MIK. Contributed by Alexander Shopov.
384 * For sites with broken group and/or passwd database, the auto-propagate
385 option of nscd can prevent creating ID lookup entries from the results
386 of a name lookup and vice versa. This usually is no problem but some
387 site might have problems with the default behavior.
388 Implemented by Ulrich Drepper.
390 * Iterating over entire database in NIS can be slow. With the
391 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
392 to trade time for memory. The entire database will be read at once.
393 Implemented by Ulrich Drepper.
395 * The interfaces introduced in RFC 3542 have been implemented by
398 * Support for the new ELF hash table format was added by Ulrich Drepper.
400 * Support for priority inheritance mutexes added by Jakub Jelinek and
403 * Support for priority protected mutexes added by Jakub Jelinek.
405 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
406 or_IN, csb_PL, fy_NL, sr_ME.
410 * More overflow detection functions.
412 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
413 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
415 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
416 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
417 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
418 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
419 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
420 by Masahide Washizawa.
422 * It is now possible to install audit libraries for the dynamic linker using
423 LD_AUDIT. Implemented by Ulrich Drepper.
425 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
426 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
427 For a libc and libpthread that works well on Linux 2.4 kernels, we
428 recommend using the stable 2.3 branch.
430 * The new function open_wmemstream acts like open_memstream,
431 but uses a wchar_t wide character buffer.
433 * The new function ppoll is an improved version of poll, similar to pselect.
435 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
436 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
437 renameat, unlinkat, linkat, symlinkat, readlinkat.
439 * New Linux kernel system calls: unshare,
440 inotify_init, inotify_add_watch, inotify_rm_watch.
442 * The euidaccess function is now also known by the alias eaccess,
443 for compatibility with some other systems.
445 * Timezone data updated to 2006b version.
449 * The following bugs are resolved with this release:
451 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
452 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
453 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
454 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
455 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
456 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
458 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
460 * As of this release, GCC 4 can be used to compile the C Library.
462 * Timezone data updated to 2005m version.
466 * The following bugs are resolved with this release:
468 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
469 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
470 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
471 777, 787, 821, 822, 823, 825
473 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
477 * Support for RFC 3678. Real implementations exist only for Linux so far.
478 Implemented by Ulrich Drepper.
480 * nscd can now cache entries persistently. Expiring entries are reloaded.
481 For speedups the cache can be shared in memory with client processes.
482 Implemented by Ulrich Drepper.
484 * nscd can now perform SELinux checks.
485 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
487 * getaddrinfo queries are now cached. Canonical name lookup is performed
489 Implemented by Ulrich Drepper.
491 * The nothrow function attribute is used when headers are used by gcc when
492 compiling C code. This can avoid significant amounts of exception
495 * The malloc functions perform more error checking and are stricter when
496 it comes to reacting on errors. The default action is to terminate
497 the process after showing an error message. Implemented by Ulrich Drepper.
499 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
500 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
502 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
503 namespaces using the new function dlmopen(). This feature is of course,
504 like most other dynamic loading functionality, not available in statically
505 linked applications. Implemented by Ulrich Drepper.
507 * Low-overhead boundary checking variants of string and some stdio functions
508 were added. These are to be used in conjunction with a gcc patch by
509 Jakub Jelinek which adds calls to these functions if possible.
510 Implemented by Jakub Jelinek and Ulrich Drepper.
512 * Old code for several operating systems and machine architectures that
513 have not been in working condition in a long time have been removed from
514 the main source tree maintained by the GNU C Library's maintainers.
515 These files are now reside in the separate `ports' source module
516 that is usable as an add-on when building the library.
520 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
521 interrogate the dynamic linker, compatible with the Solaris interface.
523 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
524 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
526 * getifaddrs now uses the netlink interface on Linux to get its information.
527 Implemented by Thorsten Kukuk.
529 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
530 Implemented by Ulrich Drepper.
532 * support for non-executable stacks on x86 has been added. Changes mostly
535 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
538 * getaddrinfo now performs destination address selection according to
543 * Thread-safe interfaces for many functions that access locale data
544 were added in version 2.3, but these features were omitted from NEWS.
545 Many functions have variants with an `_l' suffix that take a `locale_t'
546 object as a parameter rather than consulting the current locale.
547 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
548 create and maintain `locale_t' objects. Additionally, the new function
549 `uselocale' sets "the current locale" (as used by functions not so
550 parameterized) set for an individual thread. These features were added
551 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
553 * The functions getresuid, getresgid, setresuid, and setresgid, which
554 have long been available on Linux, are now declared in <unistd.h>
555 and are now also available on the Hurd.
557 * ELF thread-local storage support (TLS) now works on x86-64.
559 * The new dynamic string token $LIB is expanded in shared library names.
560 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
562 * Aldy Hernandez contributed complete software floating point support for
563 PowerPC machines with no FPU.
565 * fexecve is implemented on Linux.
567 * The `btowc' function should work at least twice as fast due to
568 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
570 * With approriate thread add-ons cancelable functions are now implemented
571 in libc.so as well. No need to call the function in libpthread. This
572 change allowed to finally disable the incorrect and expensive handling
573 of weak definition in ld.so.
575 * Yet more PLT entries in libc.so have been removed. We finally arrived
576 at the bare minimum. Startup times improved appropriately.
578 * Support for the new Linux/x86 system call interface was added. The
579 AT_SYSINFO auxiliary vector entry is recognized and handled.
583 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
586 * iconv (the program and the interface) now accepts empty names (excluding
587 options like //TRANSLIT) to mean "use charset of current locale".
589 * localedef can now transliterate characters in strings which are not in
590 the provided charmap. The information from the input locale is used.
592 * Prelinking support was added for ELF targets. This requires additional
593 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
595 * Read-only stdio streams now use mmap to speed up operation by eliminating
596 copying and buffer underflows. To use add 'm' to the mode string of
597 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
599 * The malloc functions were completely rewritten by Wolfram Gloger based
600 on Doug Lea's malloc-2.7.0.c.
602 * Isamu Hasegawa contributed a completely new and POSIX-conformant
603 implementation of regex.
605 * Bruno Haible upgraded the iconv and locale implementation to support
608 * Contents of the LC_* and LANG environment variables in the CEN style are
609 not recognized anymore. It never was used. Change by Ulrich Drepper.
611 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
612 thread-local storage (TLS) ABI on some platforms.
613 Changes by Ulrich Drepper. SH support by Kaz Kojima.
615 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
616 EUC-JISX0213, and TSCII.
618 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
619 BSD-compatible interface for getting all network interface addresses.
620 Implementation for IPv4 by Roland McGrath.
622 * Loading of locale data is faster due to the introduction of a locale
623 archive. Implemented by Roland McGrath and Ulrich Drepper.
625 * Startup times are significantly reduced by not using exported functions
626 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
629 * Steven Munroe contributed a port to PowerPC64/Linux.
633 * The Hurd now uses the GNU libio implementation of stdio rather than the
634 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
636 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
637 with the same behavior as the Linux system call of the same name.
641 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
642 128-bit long double format.
644 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
645 IBM1161, and IBM1162 charsets.
647 * Andreas Jaeger contributed a port to x86-64/Linux.
649 * Peter Bruin contributed a port to PowerPC/Hurd.
651 * libc functions using I/O streams now can handle wide-oriented streams
654 * optimizations in the dynamic linker. Binaries created by recent binutils
655 versions start up quicker due to reduced time spent on relocations.
657 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
661 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
662 asinh, atanh, j0 for the 128-bit long double format.
664 * Bruno Haible updated all the code handling Unicode in some form to
667 * Speed of regex for single-byte locales is back to previous levels.
668 Patch by Isamu Hasegawa.
670 * Alpha, SPARC, and IA-64 now also using floating stacks.
672 * Startup time of internationalized applications greatly improved through
673 iconv cache. Use iconvconfig to generate the cache file.
674 Contributed by Ulrich Drepper.
676 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
677 severe performance problems. Patch by David Mosberger.
679 * The Hurd port got a lot more functionality like AIO, various stdio
680 extensions, etc. Mainly done by Roland McGrath.
682 * mtrace can now lookup symbols in shared libraries.
686 * Intel's IA-64 math library is largely integrated. It provides fast and
687 accurate implementatations for most basic and standard math functions
688 in float, double, and long double format.
690 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
691 and asin for the 96-bit long double format and asin, log, tan for the
692 128-bit long double format.
694 * The beginning of a last-bit accurate math library by IBM Haifa were added.
695 The basic double functions exist today. Contributed by Abraham Ziv
696 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
697 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
699 * An asynchronous name lookup library was added. The interface is designed
700 after POSIX AIO. The proposal was circulated beforehand to get comments.
701 No negative ones came in. Implemented by Ulrich Drepper.
703 * Port to S390/64bit contributed by Martin Schwidefsky
704 <schwidefsky@de.ibm.com>.
706 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
707 of functions for Linux/IA-64.
709 * The RPC code is now thread safe. Threads can now use the same service
710 of different services at the same time. Patch by Eric Norum
711 <eric.norum@usask.ca> with some help by Ulrich Drepper.
713 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
714 family of functions for Linux/S390.
716 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
717 of functions for Linux/x86.
719 * Port to Linux/CRIS contributed by Axis Communications.
723 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
724 we can now check for namespace violations and missing declarations. The
725 result is that almost all headers are now Unix-compliant (as defined in
726 the upcoming XPG6). The negative side is that some programs might need
727 corrections, too, if they depend on the incorrect form of the headers in
728 previous versions which defined too many symbols and included too many
731 * regex now handles multibyte character sets correctly.
732 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
734 * iconv (the program) does now conform to the upcoming XPG6 and handles
735 charmaps. Instead of the charset names the path of charmaps can be
736 provided and the conversion happens based on this data.
737 Contributed by Ulrich Drepper.
739 * The locale program now provides detailed information about the installed
744 only lists the names of the supported locales
748 provides details such as country, language, and codeset name.
749 Contributed by Ulrich Drepper.
753 * The gencat program now parses the input file according to the charset
754 selected by the LC_CTYPE category. This is important for stateful
755 character sets. To make generating catalogs easier there is a way
756 to overwrite the charset selected by the locale: before the first
757 message or $ quote line the catalog can contain a line like
761 to select the charset (ISO-8859-2 in this case).
763 Implemented by Shinya Hanataka and Ulrich Drepper.
765 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
766 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
767 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
769 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
770 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
772 * The LANGUAGE environment variable is now ignored unless the locale is
773 changed from the default "C" locale.
775 * The usual bug fixes.
779 * Greg McGary added runtime support for bounds checking using gcc's
780 new -fbounded-pointers option. ix86 target is complete. PowerPC
783 * Thorsten Kukuk added secure mode support to nscd.
785 * The Berkeley db libraries have been removed.
787 Related, the nss_db module is now in a separate package since it
788 obviously requires a database library being available.
790 * Wide character I/O streams implemented by Ulrich Drepper.
792 * Functions from the extended socket API added by Ulrich Drepper.
794 * Functions feenableexcept and fedisableexcept to control the
795 behaviour of individual exceptions have been added by Andreas Jaeger.
797 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
799 * The resolver code has been updated from bind 8.2.3-T5B which supports
800 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
803 This change could in some situations effect backward compatibility. Since
804 now `_res' is a thread-local instead of a global variable, modifying it
805 in one thread does not have any effect in other threads.
807 The resolver library was also extended to allow IPv6 as the transport
808 protocol for the requests. This work was done by Stig Venaas.
810 * Compatibility code for K&R C compilers has been removed from the
811 header files. A ISO C compiler is needed to use the library
812 (conforming to either C89 or C99 standard).
814 * Complete rewrite of the localedef program to support multibyte character
815 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
816 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
817 Implemented by Ulrich Drepper.
819 Bruno Haible significantly improved the generation and use of the data
820 structures for the wide character tables.
822 * Plural handling in gettext implemented by Ulrich Drepper.
824 * The utmp daemon has been removed.
826 * The port to MIPS-Linux has been finished by Andreas Jaeger.
828 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
831 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
833 * POSIX barriers implemented by Kaz Kylheku.
835 * POSIX spawn function family implemented by Ulrich Drepper.
837 * POSIX spinlocks are now available.
839 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
841 * the configure option --enable-kernel=X.Y.Z allows to strip out
842 compatibility for kernel versions before X.Y.Z. This is currently only
843 implemented for Linux.
845 * the sockaddr_in6 structure changed. The IPv6 working group added a new
846 field sin6_scope_id. This means that all programs using IPv6 should be
847 recompiled. Don't expect binary compatibility with previous glibc
850 * various conversion modules for IBM character sets contributed by
853 * IA-64 port by Jes Sorensen and HJ Lu.
855 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
856 Compiling the GNU C Library for Linux/ia64
857 ******************************************
859 Please refer to the file INSTALL in the same directory as you found
860 this file for general information about configuring and compiling
863 For general inquiries about glibc under Linux/ia64 please use the
864 following mailing list linux-ia64@linuxia64.org or one of the relevant
867 Recommended Tools for Compilation
868 =================================
870 In order for glibc-2.2 to build correctly on the ia64 you need at
871 least the following versions of the GNU tools (the :
873 * The Cygnus toolchain snapshot for the ia64 as of August 4
874 including the provided set of patches. It is however recommend
875 you use the October 24 toolchain snapshot or a more recent version.
877 OR alternatively you can try the following (the Cygnus toolchain is
878 the recommended solution):
880 * GCC and binutils, GAS and GNU LD out of CVS from
881 sources.redhat.com as of August 28, 2000 or later. The CVS tree
882 may require special patches to work properly on the ia64.
884 Configuring and compiling GNU Libc for Linux/ia64
885 =================================================
887 The library requires Linux kernel version 2.4.0-test4-000728 or
888 later to funtion properly. Besides that it support for debug libraries
889 is currently untested. Hence the following options
890 are required for configuring the library:
892 --disable-debug --enable-kernel=2.4.0
894 It is also important that you make sure the library picks up the
895 appropriate kernel header files, if you do not have recent enough
896 kernel headers in /usr/src/linux/include, you should use the
897 --with-headers=<path> option to specify the location.
899 As an example I personally use the following options to configure
904 --enable-kernel=2.4.0
908 --with-headers=/home/jes/linux/include
913 Jes Sorensen <jes@linuxcare.com>,
915 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
929 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
931 * New xdr functions are added; some rpc functions are now 64bit clean.
933 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
935 * Fixed known incompatibilities with glibc 2.0.
937 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
939 * Optimized a number of functions (especially the ELF dynamic loader).
941 * Update timezone data files.
943 * lots of charmaps corrections
945 * some new locale definitions and charmaps
950 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
951 conform to POSIX member type requirements. Symbol versions have been
952 adjusted as needed within the library, and for direct use by applications,
953 but there is potential for problems if third-party libraries use
954 struct timeval as part of their interface. This does not present
955 a problem for X and other "essential" system libraries.
957 * An additional locale model to support C++ Standard Library locale
958 model and probably more was implemented by Ulrich Drepper.
960 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
963 * Miles Bader provided the `argp' function family to support hierachical
964 command line argument parsing, layered on top of getopt.
966 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
968 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
971 * scanf recognizes the %a and %A format for scanning floating point numbers.
973 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
974 information and interfaces for the available integer types.
976 * about 130 new math functions were added to implement the ISO C9x math
979 * the new header <complex.h> contains definitions of the complex math
980 functions from ISO C 9X.
982 * the new header <tgmath.h> defines generic macros to use complex or
983 real valued functions.
985 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
987 * Andreas Jaeger provided a test suite for the math library.
989 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
991 * Ulrich Drepper added character set conversion functions (iconv).
993 * Optimized string functions have been added.
995 * The localedata addon is now part of glibc.
997 * An implementation of profiling shared libraries was added by Ulrich Drepper.
999 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1000 daemon for NSS (nscd).
1002 Missing a better place here are some numbers on improvements. Under
1003 Linux 2.1.125 un-tar-ing the kernel sources takes
1007 using local files 12.19s 6.88s 22.91s
1009 using NIS 13.92s 8.91s 26.34s
1011 using NIS & nscd 10.37s 7.34s 25.30s
1013 using NIS+ 27.57s 30.37s 640.46s
1015 using NIS+ & nscd 10.25s 7.83s 26.51s
1017 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1019 Keep in mind that non-namelookup related operations dominate above times.
1020 It was just a common complain that using NIS+ unpacking the kernel is
1023 [1] The old nscd implementation is not available anymore since it was
1024 distributed with glibc up to version 2.0.98 and thus is now replaced.
1026 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1028 * Mark Kettenis provided a Hesiod NSS module.
1030 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1031 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1033 * rcmd can now handle netgroups (Dick Streefland).
1035 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1038 * Support for the IPv6 protocol has been added to the socket API, as per the
1039 latest draft standards.
1041 * Support for Linux 2.2 has been added.
1043 * Interface changes relative to the latest 2.0.x release:
1044 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1045 addseverity NEW: Unix98
1046 alphasort64 NEW: LFS
1047 argp_err_exit_status NEW: argp, GNU ext
1048 argp_error NEW: argp, GNU ext
1049 argp_failure NEW: argp, GNU ext
1050 argp_help NEW: argp, GNU ext
1051 argp_parse NEW: argp, GNU ext
1052 argp_program_bug_address NEW: argp, GNU ext
1053 argp_program_version NEW: argp, GNU ext
1054 argp_program_version_hook NEW: argp, GNU ext
1055 argp_state_help NEW: argp, GNU ext
1056 argp_usage NEW: argp, GNU ext
1057 authdes_create NEW: Secure RPC
1058 authdes_getucred NEW: Secure RPC
1059 authdes_pk_create NEW: Secure RPC
1060 backtrace NEW: GNU ext.
1061 backtrace_symbols NEW: GNU ext.
1062 backtrace_symbols_fd NEW: GNU ext.
1064 cacosf NEW: ISO C 9x
1065 cacosh NEW: ISO C 9x
1066 cacoshf NEW: ISO C 9x
1067 cacoshl NEW: ISO C 9x
1068 cacosl NEW: ISO C 9x
1075 casinf NEW: ISO C 9x
1076 casinh NEW: ISO C 9x
1077 casinhf NEW: ISO C 9x
1078 casinhl NEW: ISO C 9x
1079 casinl NEW: ISO C 9x
1081 catanf NEW: ISO C 9x
1082 catanh NEW: ISO C 9x
1083 catanhf NEW: ISO C 9x
1084 catanhl NEW: ISO C 9x
1085 catanl NEW: ISO C 9x
1086 cbc_crypt NEW: Secure RPC
1090 ccoshf NEW: ISO C 9x
1091 ccoshl NEW: ISO C 9x
1097 cimagf NEW: ISO C 9x
1098 cimagl NEW: ISO C 9x
1099 clearerr_locked REMOVED
1100 clntunix_create NEW: sunrpc ext
1102 clog10 NEW: ISO C 9x
1103 clog10f NEW: ISO C 9x
1104 clog10l NEW: ISO C 9x
1114 cprojf NEW: ISO C 9x
1115 cprojl NEW: ISO C 9x
1117 crealf NEW: ISO C 9x
1118 creall NEW: ISO C 9x
1123 csinhf NEW: ISO C 9x
1124 csinhl NEW: ISO C 9x
1127 csqrtf NEW: ISO C 9x
1128 csqrtl NEW: ISO C 9x
1132 ctanhf NEW: ISO C 9x
1133 ctanhl NEW: ISO C 9x
1135 des_setparity NEW: Secure RPC
1136 ecb_crypt NEW: Secure RPC
1137 endutxent NEW: Unix98
1139 exp10f NEW: ISO C 9x
1140 exp10l NEW: ISO C 9x
1144 fattach NEW: STREAMS
1145 fdetach NEW: STREAMS
1149 feclearexcept NEW: ISO C 9x
1150 fegetenv NEW: ISO C 9x
1151 fegetexceptflag NEW: ISO C 9x
1152 fegetround NEW: ISO C 9x
1153 feholdexcept NEW: ISO C 9x
1155 feraiseexcept NEW: ISO C 9x
1156 ferror_locked REMOVED
1157 fesetenv NEW: ISO C 9x
1158 fesetexceptflag NEW: ISO C 9x
1159 fesetround NEW: ISO C 9x
1160 fetestexcept NEW: ISO C 9x
1161 feupdateenv NEW: ISO C 9x
1162 fflush_locked REMOVED
1166 fgets_unlocked NEW: GNU ext.
1167 fileno_locked REMOVED
1179 fputc_locked REMOVED
1180 fputs_unlocked NEW: GNU ext.
1181 fread_unlocked NEW: GNU ext.
1186 fstatvfs NEW: Unix98
1190 ftruncate64 NEW: LFS
1192 fwrite_unlocked NEW: GNU ext.
1193 gai_strerror NEW: IPv6
1197 getchar_locked REMOVED
1199 getdate_err NEW: Unix98
1200 getdate_r NEW: GNU ext.
1202 getnameinfo NEW: IPv6
1203 getnetname NEW: Secure RPC
1204 getpmsg NEW: STREAMS
1205 getpt NEW: Unix98 PTY
1206 getrlimit64 NEW: LFS
1207 getutxent NEW: Unix98
1208 getutxid NEW: Unix98
1209 getutxline NEW: Unix98
1210 glob64 NEW: GNU ext.
1211 globfree64 NEW: GNU ext.
1212 gnu_get_libc_release NEW: GNU ext.
1213 gnu_get_libc_version NEW: GNU ext.
1214 grantpt NEW: Unix98 PTY
1215 host2netname NEW: Secure RPC
1217 iconv_close NEW: iconv
1218 iconv_open NEW: iconv
1219 if_freenameindex NEW: IPv6
1220 if_indextoname NEW: IPv6
1221 if_nameindex NEW: IPv6
1222 if_nametoindex NEW: IPv6
1223 in6addr_any NEW: IPv6
1224 in6addr_loopback NEW: IPv6
1225 inet6_isipv4mapped NEW: IPv6
1226 isastream NEW: STREAMS
1227 iswblank NEW: GNU ext.
1228 key_decryptsession NEW: Secure RPC
1229 key_decryptsession_pk NEW: Secure RPC
1230 key_encryptsession NEW: Secure RPC
1231 key_encryptsession_pk NEW: Secure RPC
1232 key_gendes NEW: Secure RPC
1233 key_get_conv NEW: Secure RPC
1234 key_secretkey_is_set NEW: Secure RPC
1235 key_setnet NEW: Secure RPC
1236 key_setsecret NEW: Secure RPC
1237 llrint NEW: ISO C 9x
1238 llrintf NEW: ISO C 9x
1239 llrintl NEW: ISO C 9x
1240 llround NEW: ISO C 9x
1241 llroundf NEW: ISO C 9x
1242 llroundl NEW: ISO C 9x
1247 lrintf NEW: ISO C 9x
1248 lrintl NEW: ISO C 9x
1249 lround NEW: ISO C 9x
1250 lroundf NEW: ISO C 9x
1251 lroundl NEW: ISO C 9x
1253 makecontext NEW: Unix98
1254 mempcpy NEW: GNU ext.
1257 modify_ldt NEW: kernel
1261 nearbyint NEW: ISO C 9x
1262 nearbyintf NEW: ISO C 9x
1263 nearbyintl NEW: ISO C 9x
1264 netname2host NEW: Secure RPC
1265 netname2user NEW: Secure RPC
1266 nexttoward NEW: ISO C 9x
1267 nexttowardf NEW: ISO C 9x
1268 nexttowardl NEW: ISO C 9x
1272 passwd2des NEW: Secure RPC
1274 pow10f NEW: GNU ext.
1275 pow10l NEW: GNU ext.
1278 printf_size NEW: GNU ext.
1279 printf_size_info NEW: GNU ext.
1280 profil_counter REMOVED
1281 pthread_mutexattr_getkind_np REPLACED
1282 pthread_mutexattr_setkind_np REPLACED
1283 ptsname NEW: Unix98 PTY
1284 ptsname_r NEW: Unix98 PTY
1286 putchar_locked REMOVED
1287 putgrent NEW: GNU ext.
1289 putpmsg NEW: STREAMS
1290 pututxline NEW: Unix98
1294 readdir64_r NEW: LFS
1295 remquo NEW: ISO C 9x
1296 remquof NEW: ISO C 9x
1297 remquol NEW: ISO C 9x
1299 roundf NEW: ISO C 9x
1300 roundl NEW: ISO C 9x
1302 scalbln NEW: ISO C 9x
1303 scalblnf NEW: ISO C 9x
1304 scalblnl NEW: ISO C 9x
1306 sendfile NEW: kernel
1307 setcontext NEW: Unix98
1308 setrlimit64 NEW: LFS
1309 setutxent NEW: Unix98
1311 sigignore NEW: Unix98
1312 sigqueue NEW: POSIX.1b
1313 sigrelse NEW: Unix98
1314 sigset NEW: POSIX.1b
1315 sigtimedwait NEW: POSIX.1b
1316 sigwaitinfo NEW: POSIX.1b
1317 sincos NEW: GNU ext.
1318 sincosf NEW: GNU ext.
1319 sincosl NEW: GNU ext.
1323 strcasestr NEW: GNU ext.
1324 strtoimax NEW: ISO C 9x
1325 strtoumax NEW: ISO C 9x
1326 strverscmp NEW: GNU ext.
1327 svcauthdes_stats NEW: Secure RPC
1328 svcunix_create NEW: sunrpc etx
1329 svcunixfd_create NEW: sunrpc ext
1330 swapcontext NEW: Unix98
1331 tcgetsid NEW: Unix98 PTY
1332 tdestroy NEW: GNU ext.
1333 tgamma NEW: ISO C 9x
1334 tgammaf NEW: ISO C 9x
1335 tgammal NEW: ISO C 9x
1339 truncf NEW: ISO C 9x
1340 truncl NEW: ISO C 9x
1342 unlockpt NEW: Unix98 PTY
1343 updwtmpx NEW: Unix98
1344 user2netname NEW: Secure RPC
1345 utmpxname NEW: Unix98
1346 versionsort NEW: GNU ext.
1347 versionsort64 NEW: GNU ext.
1349 wcscasecmp NEW: GNU ext.
1350 wcsncasecmp NEW: GNU ext.
1351 wcsnlen NEW: GNU ext.
1352 wcstoimax NEW: ISO C 9x
1353 wcstoll NEW: ISO C 9x
1354 wcstoull NEW: ISO C 9x
1355 wcstoumax NEW: ISO C 9x
1357 wordexp NEW: POSIX.2
1358 wordfree NEW: POSIX.2
1359 write_profiling REMOVED
1360 xdecrypt NEW: Secure RPC
1361 xdr_authdes_cred NEW: Secure RPC
1362 xdr_authdes_verf NEW: Secure RPC
1363 xdr_cryptkeyarg NEW: Secure RPC
1364 xdr_cryptkeyarg2 NEW: Secure RPC
1365 xdr_cryptkeyres NEW: Secure RPC
1366 xdr_getcredres NEW: Secure RPC
1367 xdr_key_netstarg NEW: Secure RPC
1368 xdr_key_netstres NEW: Secure RPC
1369 xdr_keybuf NEW: Secure RPC
1370 xdr_keystatus NEW: Secure RPC
1371 xdr_netnamestr NEW: Secure RPC
1372 xdr_sizeof NEW: Secure RPC
1373 xdr_unixcred NEW: sunrpc ext
1374 xencrypt NEW: Secure RPC
1375 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1386 * inet_ntoa is thread-safe
1388 * updwtmp is moved from libutil to libc
1390 * rewrite of cbrt function
1392 * update of timezone data
1406 * add atoll function
1408 * fix complex problems in Berkeley DB code
1410 * fix math functions
1414 * fixed lots of header problems (especially Linux/GNU specific)
1416 * dynamic loader preserves all registers
1418 * Roland McGrath provided support for handling of auxiliary objects in
1419 the ELF dynamic loader.
1421 * support for parallel builds is improved
1425 * GNU extensions are no longer declared by default. To enable them you
1426 must define the macro `_GNU_SOURCE' in your program or compile with
1429 * The library has changed from using GNU ld symbol aliases to using weak
1430 symbols where available. The ELF object file format supports weak
1431 symbols; GNU ld also supports weak symbols in the a.out format. (There
1432 is also now support for other GNU ld extensions in ELF. Use the
1433 `--with-elf' option to configure to indicate you have ELF, and
1434 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1435 of many files which contained only symbol aliases, reducing the size of
1436 the source and the compiled library; many other files were renamed to
1437 less cryptic names previously occupied by the symbol alias files.
1438 There is a new header file <elf.h> for programs which operate on
1439 files in the ELF format.
1441 * Converted to Autoconf version 2, so `configure' has more options.
1442 Run `configure --help' to see the details.
1444 * The library can now be configured to build profiling, highly-optimized
1445 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1446 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1447 `configure' enable building these extra libraries. The shared library is
1448 built by default when using both ELF and GNU ld. When shared libraries
1449 are enabled, the new library `-ldl' is available for arbitrary run-time
1450 loading of shared objects; its interface is defined in <dlfcn.h>. The
1451 new header file <link.h> gives access to the internals of the run-time
1452 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1453 application of same name on other systems and it provides information
1454 about dynamically linked binaries.
1456 * The C library now provides the run-time support code for profiling
1457 executables compiled with `-pg'. Programs can control the profiling code
1458 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1459 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1460 the support for this file format was contributed by David Mosberger-Tang.
1462 * The math code has been replaced with a math library based on fdlibm from
1463 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1464 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1465 functions. The math functions now reside in a separate library, so
1466 programs using them will need to use `-lm' their linking commands.
1468 * John C. Bowman contributed optimized ix87 assembler inline functions.
1470 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1471 mechanism similar to that found in Solaris 2. This is now used for the
1472 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1473 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1474 file controls what services are used for each individual database. This
1475 works by loading shared libraries with names specified in `nsswitch.conf',
1476 so service modules can be changed or added at any time without even
1477 relinking any program. Currently there are the file, db, and NIS based
1478 NSS services available.
1480 * The new functions `strtoq' and `strtouq' parse integer values from
1481 strings, like `strtol' and `strtoul', but they return `long long int' and
1482 `unsigned long long int' values, respectively (64-bit quantities).
1484 * The new functions `strtof' and `strtold' parse floating-point values from
1485 strings, like `strtod', but they return `float' and `long double' values,
1486 respectively (on some machines `double' and `long double' are the same).
1488 * Ulrich Drepper has contributed new implementations of the floating-point
1489 printing and reading code used in the `printf' family of functions and
1490 `strtod', `strtof', and `strtold'. These new functions are perfectly
1491 accurate, and much faster than the old ones.
1493 * The implementation of the POSIX locale model was completely rewritten by
1494 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1495 to compile the POSIX locale definition.
1497 * The former dummy implementations of the strcoll and strxfrm function are
1498 now replaced by fully functional code contributed by Ulrich Drepper. The
1499 collation information comes from the POSIX locale definitions.
1501 * The new header <langinfo.h> defines an interface for accessing
1502 various locale-dependent data (using the locale chosen with `setlocale').
1504 * Ulrich Drepper has contributed a new suite of functions for operation on
1505 wide-character and multibyte-character strings, in <wchar.h>;
1506 and classification and case conversion of wide characters, in <wctype.h>.
1507 These new functions are conforming to the ISO C, Amendement 1 specification.
1509 * There is now a second implementation of the standard I/O library available.
1510 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1511 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1513 * You can now use positional parameter specifications in format strings
1514 for the `printf' and `scanf' families of functions. For example,
1515 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1516 ``Number 6, Mr Jones''. This is mainly useful when providing different
1517 format strings for different languages, whose grammars may dictate
1518 different orderings of the values being printed. To support this
1519 feature, the interface for `register_printf_handler' has changed; see
1520 the header file <printf.h> for details.
1522 * The `printf' and `scanf' families of functions now understand a new
1523 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1524 to group numbers as indicated by the locale; for `scanf' and friends, this
1525 says to accept as valid only a number with all the proper grouping
1526 separators in the right places. In the default "C" locale, numbers are
1527 not grouped; but locales for specific countries will define the usual
1528 conventions (i.e. separate thousands with `,' in the US locale).
1530 * The pgrp functions have been regularized, slightly incompatibly but much
1531 less confusingly. The core functions are now `getpgid' and `setpgid',
1532 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1533 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1534 provided for compatibility. There is no longer an incompatible `getpgrp'
1535 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1537 * The new header file <fts.h> and suite of functions simplify programs that
1538 operate on directory trees. This code comes from 4.4 BSD.
1540 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1541 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1542 NSS scheme used in glibc.
1544 * There is a new malloc debugging hook `__memalign_hook'.
1546 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1547 `unsigned int' in <sys/types.h>. These are for compatibility only and
1548 their use is discouraged.
1550 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1551 done differently, so that it works even without GNU ld.
1553 * New function `euidaccess' checks allowed access to a file like `access',
1554 but using the effective IDs instead of the real IDs.
1556 * The time zone data files have been updated for the latest and greatest
1557 local time conventions of the countries of the world.
1559 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1562 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1563 for formatting floating-point numbers. They are provided only for
1564 compatibility; new programs should use `sprintf' instead. There are
1565 also equivalent function for the `long double' floating-point type and
1566 all functions also exist in a reentrant form.
1568 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1569 functions for maintaining the login-record files (primarily of use to
1570 system programs such as `login'), and convenient functions for
1571 allocating and initializing a pseudo-terminal (pty) device.
1573 * Ulrich Drepper has contributed new support for System V style
1574 shared memory and IPC on systems that support it.
1576 * Ulrich Drepper has contributed several miscellaneous new functions found
1577 in System V: The `hsearch' family of functions provide an effective
1578 implementation of hash tables; `a64l' and `l64a' provide a very simple
1579 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1582 * Ulrich Drepper has contributed new reentrant counterparts for the
1583 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1585 * Ulrich Drepper has contributed new, highly-optimized versions of several
1586 string functions for the i486/Pentium family of processors.
1588 * Ulrich Drepper has updated the Linux-specific code, based largely
1589 on work done in Hongjiu Lu's version of GNU libc for Linux.
1590 The GNU library now supports Linux versions 2.0.10 and later,
1591 using the ELF object file format (i[3456]86-*-linux).
1593 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1595 * David Mosberger-Tang and Richard Henderson have ported the C library
1596 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1597 dynamic linking support for ELF/Alpha.
1599 * Richard Henderson contributed several Alpha optimized assembler function
1600 for arithmetic and string handling.
1602 * Ulrich Drepper has contributed a new set of message catalog functions to
1603 support multiple languages using the <libintl.h> interface, for use with
1604 his new package GNU gettext. Translation volunteers have contributed
1605 catalogs of the library's messages in Spanish, German, and Korean.
1607 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1608 program and the `catgets' function for reading the catalog files it
1609 creates. (The <libintl.h> interface is preferred; we include the
1610 <nl_types.h> interface using `catgets' only for source compatibility with
1611 programs already written to use it.)
1613 * New header file <values.h> gives SVID-compatible names for <limits.h>
1616 * Various new macros, declarations, and small header files for compatibility
1619 * New function `group_member' is a convenient way to check if a process has
1620 a given effective group ID.
1622 * When using GCC 2.7 and later, the socket functions are now declared in a
1623 special way so that passing an argument of type `struct sockaddr_in *',
1624 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1625 `struct sockaddr *' type, does not generate a type-clash warning.
1627 * New function `error' declared in header file <error.h> is a convenient
1628 function for printing error messages and optionally exiting; this is the
1629 canonical function used in GNU programs. The new functions `err', `warn',
1630 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1631 doing the same thing.
1633 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1634 POSIX.2 `glob' function to do ~ and {...} expansion.
1636 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1637 `clearenv' which is used in POSIX.9 is also available.
1639 * New function `getsid' returns session ID number on systems that support it.
1641 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1642 files <db.h> and <mpool.h> provide a rich set of functions for several
1643 types of simple databases stored in memory and in files, and <ndbm.h> is
1644 an old `ndbm'-compatible interface using the `db' functions. Link with
1645 `-ldb' to get these functions.
1647 * New macro `strdupa' copies a string like `strdup', but uses local stack
1648 space from `alloca' instead of dynamic heap space from `malloc'.
1650 * New function `strnlen' is like `strlen' but searches only a given maximum
1651 number of characters for the null terminator. `stpncpy', `strndup' and
1652 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1655 * New function `statfs' in header <sys/statfs.h>.
1657 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1658 provide convenient functions for operating on blocks of null-terminated
1661 * A new suite of functions in <utmp.h> handle all the details of reading
1662 and writing the utmp file.
1664 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1667 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1668 completely POSIX compliant and also implemented the extended functionality
1669 to handle alternate digit representation and alternate era date formats.
1671 * Ulrich Drepper provided an implementation of the `strptime' function
1672 defined in XPG4.2 which transforms a string into a `struct tm' value.
1674 * Paul Eggert provided the tzselect shell script as part of the timezone
1675 code. The shell script makes it easy to select the correct timezone
1678 * The implementation of the malloc family of functions is completely replaced
1679 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1680 The implementation uses the mmap function (if available) and it is
1681 optimized for the use in multi threaded programs.
1683 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1684 functions. This new functionality is usable by specifying a special
1685 salt string and it is compatible with implementation on *BSD systems.
1687 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1688 `getsubopt' to handle second level command line options, `bsd_signal'
1689 to access BSD style `signal' functionality, the obsolete `regexp' style
1692 * the `lchown' function is available on system which support this
1695 * The implementation of the shadow password handling function was contributed
1698 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1700 * POSIX.1g support was added. The <sys/select.h> header is available,
1701 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1702 implementation of `getaddrinfo'.
1706 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1708 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1709 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1711 * The new function `daemon' from 4.4 BSD is useful for server programs that
1712 want to put themselves in the background.
1714 * Joel Sherrill has contributed support for several standalone boards that
1715 run without an operating system.
1717 * `printf', `scanf' and friends now accept a `q' type modifier for long
1718 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1720 * All of the code taken from BSD (notably most of the math and networking
1721 routines) has been updated from the BSD 4.4-Lite release.
1723 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1725 * The new functions `getdomainname' and `setdomainname' fetch or change the
1726 YP/NIS domain name. These are system calls which exist on systems which
1729 * The time zone data files have been updated for the latest international
1732 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1733 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1737 * The C library now includes support for Sun RPC, from Sun's free
1738 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1739 are included. (There is still no support for YP.)
1741 * Tom Quinn has contributed a port of the C library to SGI machines running
1742 Irix 4 (mips-sgi-irix4).
1744 * The new `lockf' function is a simplified interface to the locking
1745 facilities of `fcntl', included for compatibility.
1747 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1749 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1751 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1754 * The error message printed by `assert' for a failed assertion now includes
1755 the name of the program (if using GNU ld) and the name of the calling
1756 function (with versions of GCC that support this).
1758 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1760 * The library now includes the <sys/mman.h> header file and memory
1761 management functions `mmap', `munmap', `mprotect', `msync', and
1762 `madvise', on systems that support those facilities.
1764 * The interface for `mcheck' has changed slightly: the function called to
1765 abort the program when an allocation inconsistency is detected now takes
1766 an argument that indicates the type of failure. The new function
1767 `mprobe' lets you request a consistency check for a particular block at
1768 any time (checks are normally done only when you call `free' or `realloc'
1771 * It is now possible to easily cross-compile the C library, building on one
1772 system a library to run on another machine and/or operating system. All
1773 you need to do is set the variable `HOST_CC' in `configparms' to the
1774 native compiler for programs to run on the machine you are building on (a
1775 few generator programs are used on Unix systems); set `CC' to the
1778 * The new function `fexecve' (only implemented on the GNU system) executes
1779 a program file given a file descriptor already open on the file.
1783 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1784 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1786 * You can set the variable `libprefix' in `configparms' to specify a prefix
1787 to be prepended to installed library files; this makes it easy to install
1788 the GNU C library to be linked as `-lgnuc' or whatever.
1790 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1791 copies a limited number of characters from a string, and returns the
1792 address of the last character written.
1794 * You no longer need to check for whether the installed `stddef.h' is
1795 compatible with the GNU C library. configure now checks for you.
1797 * You can now define a per-stream `fileno' function to convert the
1798 stream's cookie into an integral file descriptor.
1800 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1801 allocates zero bytes of storage, and returns a unique pointer which
1802 you can pass to `realloc' or `free'. The behavior is undefined if
1803 you dereference this pointer.
1805 * The C library now runs on Sony NEWS m68k machines running either
1806 NewsOS 3 or NewsOS 4.
1808 * The new `syscall' function is a system-dependent primitive function
1809 for invoking system calls. It has the canonical behavior on Unix
1810 systems, including unreliable return values for some calls (such as
1811 `pipe', `fork' and `getppid').
1813 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1814 to `EAGAIN', which is the preferred name. On systems whose kernels
1815 use two distinct codes, the C library now translates EWOULDBLOCK to
1816 EAGAIN in every system call function.
1820 * The GNU C Library Reference Manual is now distributed with the library.
1821 `make dvi' will produce a DVI file of the printed manual.
1822 `make info' will produce Info files that you can read on line using C-h i
1823 in Emacs or the `info' program.
1824 Please send comments on the manual to bug-glibc-manual@gnu.org.
1826 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1828 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1830 * Jason Merrill has contributed a port to the Sequent Symmetry running
1831 Dynix version 3 (i386-sequent-dynix).
1833 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1834 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1836 * New function `memory_warnings' lets you arrange to get warnings when
1837 malloc is running out of memory to allocate, like Emacs gives you.
1839 * The C library now contains the relocating allocator used in Emacs 19 for
1840 its editing buffers. This allocator (ralloc) minimizes allocation
1841 overhead and fragmentation by moving allocated regions around whenever it
1842 needs to. You always refer to a ralloc'd region with a "handle" (a
1843 pointer to a pointer--an object of type `void **').
1845 * There is a new `printf' format: `%m' gives you the string corresponding
1846 to the error code in `errno'.
1848 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1849 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1850 pass, the `a' modifier says to fill in a `char **' you pass with a
1853 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1854 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1855 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1857 * `mkstemp' is a traditional Unix function to atomically create and open a
1858 uniquely-named temporary file.
1862 * The standard location for the file that says what the local timezone is
1863 has changed again. It is now `/usr/local/etc/localtime' (or more
1864 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1866 * The distribution no longer contains any files with names longer than 14
1869 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1870 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1872 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1876 * The configuration process has changed quite a bit. The `configure'
1877 script is now used just like the configuration scripts for other GNU
1878 packages. The `sysdeps' directory hierarchy is much rearranged.
1879 The file `INSTALL' explains the new scheme in detail.
1881 * The header files no longer need to be processed into ANSI C and
1882 traditional C versions. There is just one set of files to install, and
1883 it will work with ANSI or old C compilers (including `gcc -traditional').
1885 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1886 MIPS DECStation running Ultrix 4.
1888 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1889 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1890 made itself into a shared library.
1892 * Yet further improved support for the i386, running 4.3 BSD-like systems
1893 (such as Mach 3 with the Unix single-server), or System V.
1895 * New function `strncasecmp' to do case-insensitive string comparison
1896 with limited length.
1898 * New function `strsep' is a reentrant alternative to `strtok'.
1900 * New functions `scandir' and `alphasort' for searching directories.
1902 * New function `setenv' is a better interface to `putenv'.
1904 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1905 function for traversing a directory tree.
1907 * The GNU obstack package is now also part of the C library.
1908 The new function `open_obstack_stream' creates a stdio stream that
1909 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1910 formatted output directly to an obstack.
1912 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1913 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1915 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1917 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1918 things to your strings.
1920 * There are some new test programs: test-fseek, testmb, and testrand.
1922 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1923 These ports are not finished, but are a good starting place for really
1924 supporting those systems.
1926 * `/etc/localtime' is now the standard location for the file that says what
1927 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1928 This follows the general principle that `/etc' is the place for all local
1929 configuration files.
1931 * The C library header files now use `extern "C"' when used by the C++
1932 compiler, so the C library should now work with C++ code.
1934 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1935 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1938 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1939 function which uses the `merge sort' algorithm, and is said to be
1940 significantly faster than the old GNU `qsort' function. Merge sort is
1941 now the standard `qsort' function. The new algorithm can require a lot
1942 of temporary storage; so, the old sorting function is called when the
1943 required storage is not available.
1945 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1946 provides the Unix `crypt' function, plus some other entry points.
1948 * The code and header files taken from 4.4 BSD have been updated with the
1949 latest files released from Berkeley.
1951 ----------------------------------------------------------------------
1952 Copyright information:
1954 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
1956 Permission is granted to anyone to make or distribute verbatim copies
1957 of this document as received, in any medium, provided that the
1958 copyright notice and this permission notice are preserved,
1959 thus giving the recipient permission to redistribute in turn.
1961 Permission is granted to distribute modified versions
1962 of this document, or of portions of it,
1963 under the above conditions, provided also that they
1964 carry prominent notices stating who last changed them.
1967 version-control: never
projects / platform / upstream / glibc.git / blob