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 11724, 12393, 12420, 12445, 12454, 12460, 12469, 12489, 12509, 12510,
13 12518, 12541, 12583, 12587, 12597, 12631, 12650, 12653, 12655, 12681,
14 12685, 12711, 12713, 12714, 12717, 12723, 12734, 12738
16 * The RPC implementation in libc is obsoleted. Old programs keep working
17 but new programs cannot be linked with the routines in libc anymore.
18 Programs in need of RPC functionality must be linked against TI-RPC.
19 The TI-RPC implemtation is IPv6 enabled and there are other benefits.
21 Visible changes of this change include (obviously) the inability to link
22 programs using RPC functions without referencing the TI-RPC library and the
23 removal of the RPC headers from the glibc headers.
24 Implemented by Ulrich Drepper.
26 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
29 * New locales: os_RU, bem_ZA, en_ZA
33 * The following bugs are resolved with this release:
35 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11611, 11640,
36 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979, 12005,
37 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113, 12140,
38 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348, 12378,
41 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
43 * POWER7 optimizations: memset, memcmp, strncmp
45 * New optimized string functions for x86-64: strnlen (SSE2),
46 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
47 Implemented by Ulrich Drepper.
51 * The following bugs are resolved with this release:
53 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
54 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
55 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
56 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
57 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
58 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
59 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
60 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
62 * New interfaces: pthread_getname_np, pthread_setname_np
64 * New Linux interface: recvmmsg
66 * STT_GNU_IFUNC implemented for Sparc by David Miller.
68 * The dynamic linker now recognizes supported ABI versions from the
69 EI_ABIVERSION field in the ELF header.
70 Implemented by Ulrich Drepper.
72 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
73 will not be used to fill in password fields in the passwd.byname replies.
74 Instead it is used to synthesize the shadow.byname table, should it be
75 missing. This is a useful mode in some installations involving Solaris.
76 Implemented by Ulrich Drepper.
78 * New locales: kok_IN, sq_MK, cv_RU
82 * The following bugs are resolved with this release:
84 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
85 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
86 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
87 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
88 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
89 10789, 10817, 10823, 10840, 10847
91 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
93 Implemented by Ulrich Drepper.
95 * Checking version of longjmp added that fails if an uninitialized stack
96 frame would be created. Implemented by Ulrich Drepper.
98 * STT_GNU_IFUNC is now supported in static executables.
99 Implemented by H.J. Lu.
101 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
103 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
104 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
105 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
106 Contributed by H.J. Lu.
108 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
109 Implemented by Ulrich Drepper.
111 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
113 Contributed by H.J. Lu.
115 * Support for fma instruction in AVX on x86-64.
116 Implemented by H.J. Lu and Ulrich Drepper.
118 * AVX support in x86-64 auditing support in ld.so.
119 Implemented by H.J. Lu.
121 * STB_GNU_UNIQUE support added.
122 Implemented by Ulrich Drepper.
124 * Implement second fallback mode for optimized DNS lookup for even more
125 broken environments. If two requests from the same port are not
126 handled correctly close the socket and open a new one before sending
127 the second request. The 'single-request-reopen' option in /etc/resolv.conf
128 can be used to select this mode right away, instead of rediscovering the
129 necessity is every process again.
130 Implemented by Ulrich Drepper.
132 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
133 Implemented by Adam Tkac.
135 * Optimized iconv conversions for S390x.
136 Implemented by Andreas Krebbel.
138 * Using condvars with PI mutexes is now more efficient due to kernel
139 support for requeueing to PI futexes. NPTL support added for x86-64.
140 Implemented by Ulrich Drepper.
142 * New locales: ps_AF, my_MM
146 * The following bugs are resolved with this release:
148 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
149 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
150 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
151 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
152 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
154 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
155 Implemented by Ulrich Drepper.
157 * New Linux interfaces: accept4, fallocate, fallocate64.
158 Implemented by Ulrich Drepper.
160 * Correct declarations of string function when used in C++ code. This
161 could lead to compile errors for invalid C++ code.
163 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
166 * New POSIX 2008 interface: psiginfo
167 Implemented by Ulrich Drepper.
169 * New ISO C++1x interfaces: quick_exit, at_quick_exit
170 Implemented by Ulrich Drepper.
172 * Support for selecting between multiple function definitions at runtime
173 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
175 * The libcrypt library can now use the hash function implementations in
176 NSS. Implemented by Ulrich Drepper.
178 * The malloc implementation can be compiled to be less memory efficient
179 but higher performing in multi-threaded programs.
180 Implemented by Ulrich Drepper.
182 * New locales: nan_TW@latin, ks_IN
184 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
185 Implemented by Ulrich Drepper.
187 * Extended printf hook support. It is possible to use user-defined types
188 and extend existing format specifiers.
189 Implemented by Ulrich Drepper.
191 * Handling for group shadow files has been added.
192 Implemented by Ulrich Drepper.
194 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
195 servers (the case, e.g., for some people using the built-in DNS
196 server in ADSL modems/routers). There is a once-per-process timeout
197 in case of a broken server. To avoid it, users can run nscd or put
198 'options single-request' in /etc/resolv.conf.
199 Implemented by Ulrich Drepper.
203 * The following bugs are resolved with this release:
205 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
206 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
207 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
208 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
209 6968, 6974, 6980, 6995, 7008, 7009, 7029
211 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
212 up at the same time. Implemented by Ulrich Drepper.
214 * TLS descriptors for LD and GD on x86 and x86-64.
215 Implemented by Alexandre Oliva.
217 * getaddrinfo now handles DCCP and UDPlite.
218 Implemented by Ulrich Drepper.
220 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
221 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
222 Implemented by Ulrich Drepper.
224 * New implementation of memmem, strstr, and strcasestr which is O(n).
225 Implemented by Eric Blake.
227 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
229 * Implement "e" option for popen to open file descriptor with the
230 close-on-exec flag set. Implemented by Ulrich Drepper.
232 * Implement "b" mode for fmemopen. In this mode writes writes don't
233 implicitly add a NUL byte and seeks from the end of the buffer really
234 use the buffer end, not the string length as the basis.
235 Implemented by Ulrich Drepper.
237 * Many functions, exported and internal, now atomically set the close-on-exec
238 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
240 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
242 Implemented by Pravin Satpute.
244 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
248 * The following bugs are resolved with this release:
250 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
251 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
252 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
253 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
254 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
255 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
256 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
258 * New locales: bo_CN, bo_IN, shs_CA.
260 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
262 * Sorting rules for some Indian languages (Devanagari and Gujarati).
263 Implemented by Pravin Satpute.
265 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
267 * nscd caches now all timeouts for DNS entries
268 Implemented by Ulrich Drepper.
270 * nscd is more efficient and wakes up less often.
271 Implemented by Ulrich Drepper.
273 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
274 vdprintf, and obstack_vprintf.
275 Implemented by Jakub Jelinek.
277 * Faster memset for x86-64.
278 Implemented by Harsha Jagasia and H.J. Lu.
280 * Faster memcpy on x86.
281 Implemented by Ulrich Drepper.
283 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
284 Implemented by Ulrich Drepper.
286 * Faster sqrt and sqrtf implemention for some PPC variants.
287 Implemented by Stephen Munroe.
291 * The following bugs are resolved with this release:
293 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
294 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
295 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
296 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
297 5071, 5103, 5104, 5112, 5113, 5184, 5186
299 * More checking functions: fread, fread_unlocked, open*, mq_open.
300 Implemented by Jakub Jelinek and Ulrich Drepper.
302 * Extend fortification to C++. Implemented by Jakub Jelinek.
304 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
305 by not recognizing 'a' as a modifier when those specs are requested.
306 Implemented by Jakub Jelinek.
308 * PPC optimizations to math and string functions.
309 Implemented by Steven Munroe.
311 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
312 options to be passed. Implemented by Ulrich Drepper.
314 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
316 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
317 Implemented by Ulrich Drepper.
319 * Handle private futexes in the NPTL implementation.
320 Implemented by Jakub Jelinek and Ulrich Drepper.
322 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
323 Implemented by Roland McGrath and Ulrich Drepper.
325 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
327 * SHA-256 and SHA-512 based password encryption.
328 Implemented by Ulrich Drepper.
330 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
331 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
334 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
335 Implemented by Ulrich Drepper.
339 * The following bugs are resolved with this release:
341 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
342 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
343 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
344 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
345 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
346 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
347 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
350 * New Linux interfaces: epoll_pwait, sched_getcpu.
352 * New generic interfaces: strerror_l.
354 * nscd can now cache the services database. Implemented by Ulrich Drepper.
358 * The following bugs are resolved with this release:
360 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
361 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
362 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
363 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
364 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
365 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
366 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
367 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
368 3225, 3251, 3252, 3253, 3273
370 * For Linux, the sorting of addresses returned by getaddrinfo now also
371 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
372 Implemented by Ulrich Drepper.
374 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
375 Implemented by Ulrich Drepper.
377 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
379 * New iconv module for MIK. Contributed by Alexander Shopov.
381 * For sites with broken group and/or passwd database, the auto-propagate
382 option of nscd can prevent creating ID lookup entries from the results
383 of a name lookup and vice versa. This usually is no problem but some
384 site might have problems with the default behavior.
385 Implemented by Ulrich Drepper.
387 * Iterating over entire database in NIS can be slow. With the
388 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
389 to trade time for memory. The entire database will be read at once.
390 Implemented by Ulrich Drepper.
392 * The interfaces introduced in RFC 3542 have been implemented by
395 * Support for the new ELF hash table format was added by Ulrich Drepper.
397 * Support for priority inheritance mutexes added by Jakub Jelinek and
400 * Support for priority protected mutexes added by Jakub Jelinek.
402 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
403 or_IN, csb_PL, fy_NL, sr_ME.
407 * More overflow detection functions.
409 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
410 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
412 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
413 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
414 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
415 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
416 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
417 by Masahide Washizawa.
419 * It is now possible to install audit libraries for the dynamic linker using
420 LD_AUDIT. Implemented by Ulrich Drepper.
422 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
423 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
424 For a libc and libpthread that works well on Linux 2.4 kernels, we
425 recommend using the stable 2.3 branch.
427 * The new function open_wmemstream acts like open_memstream,
428 but uses a wchar_t wide character buffer.
430 * The new function ppoll is an improved version of poll, similar to pselect.
432 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
433 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
434 renameat, unlinkat, linkat, symlinkat, readlinkat.
436 * New Linux kernel system calls: unshare,
437 inotify_init, inotify_add_watch, inotify_rm_watch.
439 * The euidaccess function is now also known by the alias eaccess,
440 for compatibility with some other systems.
442 * Timezone data updated to 2006b version.
446 * The following bugs are resolved with this release:
448 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
449 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
450 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
451 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
452 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
453 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
455 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
457 * As of this release, GCC 4 can be used to compile the C Library.
459 * Timezone data updated to 2005m version.
463 * The following bugs are resolved with this release:
465 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
466 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
467 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
468 777, 787, 821, 822, 823, 825
470 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
474 * Support for RFC 3678. Real implementations exist only for Linux so far.
475 Implemented by Ulrich Drepper.
477 * nscd can now cache entries persistently. Expiring entries are reloaded.
478 For speedups the cache can be shared in memory with client processes.
479 Implemented by Ulrich Drepper.
481 * nscd can now perform SELinux checks.
482 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
484 * getaddrinfo queries are now cached. Canonical name lookup is performed
486 Implemented by Ulrich Drepper.
488 * The nothrow function attribute is used when headers are used by gcc when
489 compiling C code. This can avoid significant amounts of exception
492 * The malloc functions perform more error checking and are stricter when
493 it comes to reacting on errors. The default action is to terminate
494 the process after showing an error message. Implemented by Ulrich Drepper.
496 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
497 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
499 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
500 namespaces using the new function dlmopen(). This feature is of course,
501 like most other dynamic loading functionality, not available in statically
502 linked applications. Implemented by Ulrich Drepper.
504 * Low-overhead boundary checking variants of string and some stdio functions
505 were added. These are to be used in conjunction with a gcc patch by
506 Jakub Jelinek which adds calls to these functions if possible.
507 Implemented by Jakub Jelinek and Ulrich Drepper.
509 * Old code for several operating systems and machine architectures that
510 have not been in working condition in a long time have been removed from
511 the main source tree maintained by the GNU C Library's maintainers.
512 These files are now reside in the separate `ports' source module
513 that is usable as an add-on when building the library.
517 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
518 interrogate the dynamic linker, compatible with the Solaris interface.
520 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
521 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
523 * getifaddrs now uses the netlink interface on Linux to get its information.
524 Implemented by Thorsten Kukuk.
526 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
527 Implemented by Ulrich Drepper.
529 * support for non-executable stacks on x86 has been added. Changes mostly
532 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
535 * getaddrinfo now performs destination address selection according to
540 * Thread-safe interfaces for many functions that access locale data
541 were added in version 2.3, but these features were omitted from NEWS.
542 Many functions have variants with an `_l' suffix that take a `locale_t'
543 object as a parameter rather than consulting the current locale.
544 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
545 create and maintain `locale_t' objects. Additionally, the new function
546 `uselocale' sets "the current locale" (as used by functions not so
547 parameterized) set for an individual thread. These features were added
548 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
550 * The functions getresuid, getresgid, setresuid, and setresgid, which
551 have long been available on Linux, are now declared in <unistd.h>
552 and are now also available on the Hurd.
554 * ELF thread-local storage support (TLS) now works on x86-64.
556 * The new dynamic string token $LIB is expanded in shared library names.
557 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
559 * Aldy Hernandez contributed complete software floating point support for
560 PowerPC machines with no FPU.
562 * fexecve is implemented on Linux.
564 * The `btowc' function should work at least twice as fast due to
565 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
567 * With approriate thread add-ons cancelable functions are now implemented
568 in libc.so as well. No need to call the function in libpthread. This
569 change allowed to finally disable the incorrect and expensive handling
570 of weak definition in ld.so.
572 * Yet more PLT entries in libc.so have been removed. We finally arrived
573 at the bare minimum. Startup times improved appropriately.
575 * Support for the new Linux/x86 system call interface was added. The
576 AT_SYSINFO auxiliary vector entry is recognized and handled.
580 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
583 * iconv (the program and the interface) now accepts empty names (excluding
584 options like //TRANSLIT) to mean "use charset of current locale".
586 * localedef can now transliterate characters in strings which are not in
587 the provided charmap. The information from the input locale is used.
589 * Prelinking support was added for ELF targets. This requires additional
590 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
592 * Read-only stdio streams now use mmap to speed up operation by eliminating
593 copying and buffer underflows. To use add 'm' to the mode string of
594 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
596 * The malloc functions were completely rewritten by Wolfram Gloger based
597 on Doug Lea's malloc-2.7.0.c.
599 * Isamu Hasegawa contributed a completely new and POSIX-conformant
600 implementation of regex.
602 * Bruno Haible upgraded the iconv and locale implementation to support
605 * Contents of the LC_* and LANG environment variables in the CEN style are
606 not recognized anymore. It never was used. Change by Ulrich Drepper.
608 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
609 thread-local storage (TLS) ABI on some platforms.
610 Changes by Ulrich Drepper. SH support by Kaz Kojima.
612 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
613 EUC-JISX0213, and TSCII.
615 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
616 BSD-compatible interface for getting all network interface addresses.
617 Implementation for IPv4 by Roland McGrath.
619 * Loading of locale data is faster due to the introduction of a locale
620 archive. Implemented by Roland McGrath and Ulrich Drepper.
622 * Startup times are significantly reduced by not using exported functions
623 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
626 * Steven Munroe contributed a port to PowerPC64/Linux.
630 * The Hurd now uses the GNU libio implementation of stdio rather than the
631 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
633 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
634 with the same behavior as the Linux system call of the same name.
638 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
639 128-bit long double format.
641 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
642 IBM1161, and IBM1162 charsets.
644 * Andreas Jaeger contributed a port to x86-64/Linux.
646 * Peter Bruin contributed a port to PowerPC/Hurd.
648 * libc functions using I/O streams now can handle wide-oriented streams
651 * optimizations in the dynamic linker. Binaries created by recent binutils
652 versions start up quicker due to reduced time spent on relocations.
654 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
658 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
659 asinh, atanh, j0 for the 128-bit long double format.
661 * Bruno Haible updated all the code handling Unicode in some form to
664 * Speed of regex for single-byte locales is back to previous levels.
665 Patch by Isamu Hasegawa.
667 * Alpha, SPARC, and IA-64 now also using floating stacks.
669 * Startup time of internationalized applications greatly improved through
670 iconv cache. Use iconvconfig to generate the cache file.
671 Contributed by Ulrich Drepper.
673 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
674 severe performance problems. Patch by David Mosberger.
676 * The Hurd port got a lot more functionality like AIO, various stdio
677 extensions, etc. Mainly done by Roland McGrath.
679 * mtrace can now lookup symbols in shared libraries.
683 * Intel's IA-64 math library is largely integrated. It provides fast and
684 accurate implementatations for most basic and standard math functions
685 in float, double, and long double format.
687 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
688 and asin for the 96-bit long double format and asin, log, tan for the
689 128-bit long double format.
691 * The beginning of a last-bit accurate math library by IBM Haifa were added.
692 The basic double functions exist today. Contributed by Abraham Ziv
693 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
694 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
696 * An asynchronous name lookup library was added. The interface is designed
697 after POSIX AIO. The proposal was circulated beforehand to get comments.
698 No negative ones came in. Implemented by Ulrich Drepper.
700 * Port to S390/64bit contributed by Martin Schwidefsky
701 <schwidefsky@de.ibm.com>.
703 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
704 of functions for Linux/IA-64.
706 * The RPC code is now thread safe. Threads can now use the same service
707 of different services at the same time. Patch by Eric Norum
708 <eric.norum@usask.ca> with some help by Ulrich Drepper.
710 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
711 family of functions for Linux/S390.
713 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
714 of functions for Linux/x86.
716 * Port to Linux/CRIS contributed by Axis Communications.
720 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
721 we can now check for namespace violations and missing declarations. The
722 result is that almost all headers are now Unix-compliant (as defined in
723 the upcoming XPG6). The negative side is that some programs might need
724 corrections, too, if they depend on the incorrect form of the headers in
725 previous versions which defined too many symbols and included too many
728 * regex now handles multibyte character sets correctly.
729 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
731 * iconv (the program) does now conform to the upcoming XPG6 and handles
732 charmaps. Instead of the charset names the path of charmaps can be
733 provided and the conversion happens based on this data.
734 Contributed by Ulrich Drepper.
736 * The locale program now provides detailed information about the installed
741 only lists the names of the supported locales
745 provides details such as country, language, and codeset name.
746 Contributed by Ulrich Drepper.
750 * The gencat program now parses the input file according to the charset
751 selected by the LC_CTYPE category. This is important for stateful
752 character sets. To make generating catalogs easier there is a way
753 to overwrite the charset selected by the locale: before the first
754 message or $ quote line the catalog can contain a line like
758 to select the charset (ISO-8859-2 in this case).
760 Implemented by Shinya Hanataka and Ulrich Drepper.
762 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
763 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
764 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
766 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
767 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
769 * The LANGUAGE environment variable is now ignored unless the locale is
770 changed from the default "C" locale.
772 * The usual bug fixes.
776 * Greg McGary added runtime support for bounds checking using gcc's
777 new -fbounded-pointers option. ix86 target is complete. PowerPC
780 * Thorsten Kukuk added secure mode support to nscd.
782 * The Berkeley db libraries have been removed.
784 Related, the nss_db module is now in a separate package since it
785 obviously requires a database library being available.
787 * Wide character I/O streams implemented by Ulrich Drepper.
789 * Functions from the extended socket API added by Ulrich Drepper.
791 * Functions feenableexcept and fedisableexcept to control the
792 behaviour of individual exceptions have been added by Andreas Jaeger.
794 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
796 * The resolver code has been updated from bind 8.2.3-T5B which supports
797 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
800 This change could in some situations effect backward compatibility. Since
801 now `_res' is a thread-local instead of a global variable, modifying it
802 in one thread does not have any effect in other threads.
804 The resolver library was also extended to allow IPv6 as the transport
805 protocol for the requests. This work was done by Stig Venaas.
807 * Compatibility code for K&R C compilers has been removed from the
808 header files. A ISO C compiler is needed to use the library
809 (conforming to either C89 or C99 standard).
811 * Complete rewrite of the localedef program to support multibyte character
812 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
813 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
814 Implemented by Ulrich Drepper.
816 Bruno Haible significantly improved the generation and use of the data
817 structures for the wide character tables.
819 * Plural handling in gettext implemented by Ulrich Drepper.
821 * The utmp daemon has been removed.
823 * The port to MIPS-Linux has been finished by Andreas Jaeger.
825 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
828 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
830 * POSIX barriers implemented by Kaz Kylheku.
832 * POSIX spawn function family implemented by Ulrich Drepper.
834 * POSIX spinlocks are now available.
836 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
838 * the configure option --enable-kernel=X.Y.Z allows to strip out
839 compatibility for kernel versions before X.Y.Z. This is currently only
840 implemented for Linux.
842 * the sockaddr_in6 structure changed. The IPv6 working group added a new
843 field sin6_scope_id. This means that all programs using IPv6 should be
844 recompiled. Don't expect binary compatibility with previous glibc
847 * various conversion modules for IBM character sets contributed by
850 * IA-64 port by Jes Sorensen and HJ Lu.
852 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
853 Compiling the GNU C Library for Linux/ia64
854 ******************************************
856 Please refer to the file INSTALL in the same directory as you found
857 this file for general information about configuring and compiling
860 For general inquiries about glibc under Linux/ia64 please use the
861 following mailing list linux-ia64@linuxia64.org or one of the relevant
864 Recommended Tools for Compilation
865 =================================
867 In order for glibc-2.2 to build correctly on the ia64 you need at
868 least the following versions of the GNU tools (the :
870 * The Cygnus toolchain snapshot for the ia64 as of August 4
871 including the provided set of patches. It is however recommend
872 you use the October 24 toolchain snapshot or a more recent version.
874 OR alternatively you can try the following (the Cygnus toolchain is
875 the recommended solution):
877 * GCC and binutils, GAS and GNU LD out of CVS from
878 sources.redhat.com as of August 28, 2000 or later. The CVS tree
879 may require special patches to work properly on the ia64.
881 Configuring and compiling GNU Libc for Linux/ia64
882 =================================================
884 The library requires Linux kernel version 2.4.0-test4-000728 or
885 later to funtion properly. Besides that it support for debug libraries
886 is currently untested. Hence the following options
887 are required for configuring the library:
889 --disable-debug --enable-kernel=2.4.0
891 It is also important that you make sure the library picks up the
892 appropriate kernel header files, if you do not have recent enough
893 kernel headers in /usr/src/linux/include, you should use the
894 --with-headers=<path> option to specify the location.
896 As an example I personally use the following options to configure
901 --enable-kernel=2.4.0
905 --with-headers=/home/jes/linux/include
910 Jes Sorensen <jes@linuxcare.com>,
912 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
926 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
928 * New xdr functions are added; some rpc functions are now 64bit clean.
930 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
932 * Fixed known incompatibilities with glibc 2.0.
934 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
936 * Optimized a number of functions (especially the ELF dynamic loader).
938 * Update timezone data files.
940 * lots of charmaps corrections
942 * some new locale definitions and charmaps
947 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
948 conform to POSIX member type requirements. Symbol versions have been
949 adjusted as needed within the library, and for direct use by applications,
950 but there is potential for problems if third-party libraries use
951 struct timeval as part of their interface. This does not present
952 a problem for X and other "essential" system libraries.
954 * An additional locale model to support C++ Standard Library locale
955 model and probably more was implemented by Ulrich Drepper.
957 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
960 * Miles Bader provided the `argp' function family to support hierachical
961 command line argument parsing, layered on top of getopt.
963 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
965 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
968 * scanf recognizes the %a and %A format for scanning floating point numbers.
970 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
971 information and interfaces for the available integer types.
973 * about 130 new math functions were added to implement the ISO C9x math
976 * the new header <complex.h> contains definitions of the complex math
977 functions from ISO C 9X.
979 * the new header <tgmath.h> defines generic macros to use complex or
980 real valued functions.
982 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
984 * Andreas Jaeger provided a test suite for the math library.
986 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
988 * Ulrich Drepper added character set conversion functions (iconv).
990 * Optimized string functions have been added.
992 * The localedata addon is now part of glibc.
994 * An implementation of profiling shared libraries was added by Ulrich Drepper.
996 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
997 daemon for NSS (nscd).
999 Missing a better place here are some numbers on improvements. Under
1000 Linux 2.1.125 un-tar-ing the kernel sources takes
1004 using local files 12.19s 6.88s 22.91s
1006 using NIS 13.92s 8.91s 26.34s
1008 using NIS & nscd 10.37s 7.34s 25.30s
1010 using NIS+ 27.57s 30.37s 640.46s
1012 using NIS+ & nscd 10.25s 7.83s 26.51s
1014 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1016 Keep in mind that non-namelookup related operations dominate above times.
1017 It was just a common complain that using NIS+ unpacking the kernel is
1020 [1] The old nscd implementation is not available anymore since it was
1021 distributed with glibc up to version 2.0.98 and thus is now replaced.
1023 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1025 * Mark Kettenis provided a Hesiod NSS module.
1027 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1028 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1030 * rcmd can now handle netgroups (Dick Streefland).
1032 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1035 * Support for the IPv6 protocol has been added to the socket API, as per the
1036 latest draft standards.
1038 * Support for Linux 2.2 has been added.
1040 * Interface changes relative to the latest 2.0.x release:
1041 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1042 addseverity NEW: Unix98
1043 alphasort64 NEW: LFS
1044 argp_err_exit_status NEW: argp, GNU ext
1045 argp_error NEW: argp, GNU ext
1046 argp_failure NEW: argp, GNU ext
1047 argp_help NEW: argp, GNU ext
1048 argp_parse NEW: argp, GNU ext
1049 argp_program_bug_address NEW: argp, GNU ext
1050 argp_program_version NEW: argp, GNU ext
1051 argp_program_version_hook NEW: argp, GNU ext
1052 argp_state_help NEW: argp, GNU ext
1053 argp_usage NEW: argp, GNU ext
1054 authdes_create NEW: Secure RPC
1055 authdes_getucred NEW: Secure RPC
1056 authdes_pk_create NEW: Secure RPC
1057 backtrace NEW: GNU ext.
1058 backtrace_symbols NEW: GNU ext.
1059 backtrace_symbols_fd NEW: GNU ext.
1061 cacosf NEW: ISO C 9x
1062 cacosh NEW: ISO C 9x
1063 cacoshf NEW: ISO C 9x
1064 cacoshl NEW: ISO C 9x
1065 cacosl NEW: ISO C 9x
1072 casinf NEW: ISO C 9x
1073 casinh NEW: ISO C 9x
1074 casinhf NEW: ISO C 9x
1075 casinhl NEW: ISO C 9x
1076 casinl NEW: ISO C 9x
1078 catanf NEW: ISO C 9x
1079 catanh NEW: ISO C 9x
1080 catanhf NEW: ISO C 9x
1081 catanhl NEW: ISO C 9x
1082 catanl NEW: ISO C 9x
1083 cbc_crypt NEW: Secure RPC
1087 ccoshf NEW: ISO C 9x
1088 ccoshl NEW: ISO C 9x
1094 cimagf NEW: ISO C 9x
1095 cimagl NEW: ISO C 9x
1096 clearerr_locked REMOVED
1097 clntunix_create NEW: sunrpc ext
1099 clog10 NEW: ISO C 9x
1100 clog10f NEW: ISO C 9x
1101 clog10l NEW: ISO C 9x
1111 cprojf NEW: ISO C 9x
1112 cprojl NEW: ISO C 9x
1114 crealf NEW: ISO C 9x
1115 creall NEW: ISO C 9x
1120 csinhf NEW: ISO C 9x
1121 csinhl NEW: ISO C 9x
1124 csqrtf NEW: ISO C 9x
1125 csqrtl NEW: ISO C 9x
1129 ctanhf NEW: ISO C 9x
1130 ctanhl NEW: ISO C 9x
1132 des_setparity NEW: Secure RPC
1133 ecb_crypt NEW: Secure RPC
1134 endutxent NEW: Unix98
1136 exp10f NEW: ISO C 9x
1137 exp10l NEW: ISO C 9x
1141 fattach NEW: STREAMS
1142 fdetach NEW: STREAMS
1146 feclearexcept NEW: ISO C 9x
1147 fegetenv NEW: ISO C 9x
1148 fegetexceptflag NEW: ISO C 9x
1149 fegetround NEW: ISO C 9x
1150 feholdexcept NEW: ISO C 9x
1152 feraiseexcept NEW: ISO C 9x
1153 ferror_locked REMOVED
1154 fesetenv NEW: ISO C 9x
1155 fesetexceptflag NEW: ISO C 9x
1156 fesetround NEW: ISO C 9x
1157 fetestexcept NEW: ISO C 9x
1158 feupdateenv NEW: ISO C 9x
1159 fflush_locked REMOVED
1163 fgets_unlocked NEW: GNU ext.
1164 fileno_locked REMOVED
1176 fputc_locked REMOVED
1177 fputs_unlocked NEW: GNU ext.
1178 fread_unlocked NEW: GNU ext.
1183 fstatvfs NEW: Unix98
1187 ftruncate64 NEW: LFS
1189 fwrite_unlocked NEW: GNU ext.
1190 gai_strerror NEW: IPv6
1194 getchar_locked REMOVED
1196 getdate_err NEW: Unix98
1197 getdate_r NEW: GNU ext.
1199 getnameinfo NEW: IPv6
1200 getnetname NEW: Secure RPC
1201 getpmsg NEW: STREAMS
1202 getpt NEW: Unix98 PTY
1203 getrlimit64 NEW: LFS
1204 getutxent NEW: Unix98
1205 getutxid NEW: Unix98
1206 getutxline NEW: Unix98
1207 glob64 NEW: GNU ext.
1208 globfree64 NEW: GNU ext.
1209 gnu_get_libc_release NEW: GNU ext.
1210 gnu_get_libc_version NEW: GNU ext.
1211 grantpt NEW: Unix98 PTY
1212 host2netname NEW: Secure RPC
1214 iconv_close NEW: iconv
1215 iconv_open NEW: iconv
1216 if_freenameindex NEW: IPv6
1217 if_indextoname NEW: IPv6
1218 if_nameindex NEW: IPv6
1219 if_nametoindex NEW: IPv6
1220 in6addr_any NEW: IPv6
1221 in6addr_loopback NEW: IPv6
1222 inet6_isipv4mapped NEW: IPv6
1223 isastream NEW: STREAMS
1224 iswblank NEW: GNU ext.
1225 key_decryptsession NEW: Secure RPC
1226 key_decryptsession_pk NEW: Secure RPC
1227 key_encryptsession NEW: Secure RPC
1228 key_encryptsession_pk NEW: Secure RPC
1229 key_gendes NEW: Secure RPC
1230 key_get_conv NEW: Secure RPC
1231 key_secretkey_is_set NEW: Secure RPC
1232 key_setnet NEW: Secure RPC
1233 key_setsecret NEW: Secure RPC
1234 llrint NEW: ISO C 9x
1235 llrintf NEW: ISO C 9x
1236 llrintl NEW: ISO C 9x
1237 llround NEW: ISO C 9x
1238 llroundf NEW: ISO C 9x
1239 llroundl NEW: ISO C 9x
1244 lrintf NEW: ISO C 9x
1245 lrintl NEW: ISO C 9x
1246 lround NEW: ISO C 9x
1247 lroundf NEW: ISO C 9x
1248 lroundl NEW: ISO C 9x
1250 makecontext NEW: Unix98
1251 mempcpy NEW: GNU ext.
1254 modify_ldt NEW: kernel
1258 nearbyint NEW: ISO C 9x
1259 nearbyintf NEW: ISO C 9x
1260 nearbyintl NEW: ISO C 9x
1261 netname2host NEW: Secure RPC
1262 netname2user NEW: Secure RPC
1263 nexttoward NEW: ISO C 9x
1264 nexttowardf NEW: ISO C 9x
1265 nexttowardl NEW: ISO C 9x
1269 passwd2des NEW: Secure RPC
1271 pow10f NEW: GNU ext.
1272 pow10l NEW: GNU ext.
1275 printf_size NEW: GNU ext.
1276 printf_size_info NEW: GNU ext.
1277 profil_counter REMOVED
1278 pthread_mutexattr_getkind_np REPLACED
1279 pthread_mutexattr_setkind_np REPLACED
1280 ptsname NEW: Unix98 PTY
1281 ptsname_r NEW: Unix98 PTY
1283 putchar_locked REMOVED
1284 putgrent NEW: GNU ext.
1286 putpmsg NEW: STREAMS
1287 pututxline NEW: Unix98
1291 readdir64_r NEW: LFS
1292 remquo NEW: ISO C 9x
1293 remquof NEW: ISO C 9x
1294 remquol NEW: ISO C 9x
1296 roundf NEW: ISO C 9x
1297 roundl NEW: ISO C 9x
1299 scalbln NEW: ISO C 9x
1300 scalblnf NEW: ISO C 9x
1301 scalblnl NEW: ISO C 9x
1303 sendfile NEW: kernel
1304 setcontext NEW: Unix98
1305 setrlimit64 NEW: LFS
1306 setutxent NEW: Unix98
1308 sigignore NEW: Unix98
1309 sigqueue NEW: POSIX.1b
1310 sigrelse NEW: Unix98
1311 sigset NEW: POSIX.1b
1312 sigtimedwait NEW: POSIX.1b
1313 sigwaitinfo NEW: POSIX.1b
1314 sincos NEW: GNU ext.
1315 sincosf NEW: GNU ext.
1316 sincosl NEW: GNU ext.
1320 strcasestr NEW: GNU ext.
1321 strtoimax NEW: ISO C 9x
1322 strtoumax NEW: ISO C 9x
1323 strverscmp NEW: GNU ext.
1324 svcauthdes_stats NEW: Secure RPC
1325 svcunix_create NEW: sunrpc etx
1326 svcunixfd_create NEW: sunrpc ext
1327 swapcontext NEW: Unix98
1328 tcgetsid NEW: Unix98 PTY
1329 tdestroy NEW: GNU ext.
1330 tgamma NEW: ISO C 9x
1331 tgammaf NEW: ISO C 9x
1332 tgammal NEW: ISO C 9x
1336 truncf NEW: ISO C 9x
1337 truncl NEW: ISO C 9x
1339 unlockpt NEW: Unix98 PTY
1340 updwtmpx NEW: Unix98
1341 user2netname NEW: Secure RPC
1342 utmpxname NEW: Unix98
1343 versionsort NEW: GNU ext.
1344 versionsort64 NEW: GNU ext.
1346 wcscasecmp NEW: GNU ext.
1347 wcsncasecmp NEW: GNU ext.
1348 wcsnlen NEW: GNU ext.
1349 wcstoimax NEW: ISO C 9x
1350 wcstoll NEW: ISO C 9x
1351 wcstoull NEW: ISO C 9x
1352 wcstoumax NEW: ISO C 9x
1354 wordexp NEW: POSIX.2
1355 wordfree NEW: POSIX.2
1356 write_profiling REMOVED
1357 xdecrypt NEW: Secure RPC
1358 xdr_authdes_cred NEW: Secure RPC
1359 xdr_authdes_verf NEW: Secure RPC
1360 xdr_cryptkeyarg NEW: Secure RPC
1361 xdr_cryptkeyarg2 NEW: Secure RPC
1362 xdr_cryptkeyres NEW: Secure RPC
1363 xdr_getcredres NEW: Secure RPC
1364 xdr_key_netstarg NEW: Secure RPC
1365 xdr_key_netstres NEW: Secure RPC
1366 xdr_keybuf NEW: Secure RPC
1367 xdr_keystatus NEW: Secure RPC
1368 xdr_netnamestr NEW: Secure RPC
1369 xdr_sizeof NEW: Secure RPC
1370 xdr_unixcred NEW: sunrpc ext
1371 xencrypt NEW: Secure RPC
1372 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1383 * inet_ntoa is thread-safe
1385 * updwtmp is moved from libutil to libc
1387 * rewrite of cbrt function
1389 * update of timezone data
1403 * add atoll function
1405 * fix complex problems in Berkeley DB code
1407 * fix math functions
1411 * fixed lots of header problems (especially Linux/GNU specific)
1413 * dynamic loader preserves all registers
1415 * Roland McGrath provided support for handling of auxiliary objects in
1416 the ELF dynamic loader.
1418 * support for parallel builds is improved
1422 * GNU extensions are no longer declared by default. To enable them you
1423 must define the macro `_GNU_SOURCE' in your program or compile with
1426 * The library has changed from using GNU ld symbol aliases to using weak
1427 symbols where available. The ELF object file format supports weak
1428 symbols; GNU ld also supports weak symbols in the a.out format. (There
1429 is also now support for other GNU ld extensions in ELF. Use the
1430 `--with-elf' option to configure to indicate you have ELF, and
1431 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1432 of many files which contained only symbol aliases, reducing the size of
1433 the source and the compiled library; many other files were renamed to
1434 less cryptic names previously occupied by the symbol alias files.
1435 There is a new header file <elf.h> for programs which operate on
1436 files in the ELF format.
1438 * Converted to Autoconf version 2, so `configure' has more options.
1439 Run `configure --help' to see the details.
1441 * The library can now be configured to build profiling, highly-optimized
1442 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1443 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1444 `configure' enable building these extra libraries. The shared library is
1445 built by default when using both ELF and GNU ld. When shared libraries
1446 are enabled, the new library `-ldl' is available for arbitrary run-time
1447 loading of shared objects; its interface is defined in <dlfcn.h>. The
1448 new header file <link.h> gives access to the internals of the run-time
1449 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1450 application of same name on other systems and it provides information
1451 about dynamically linked binaries.
1453 * The C library now provides the run-time support code for profiling
1454 executables compiled with `-pg'. Programs can control the profiling code
1455 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1456 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1457 the support for this file format was contributed by David Mosberger-Tang.
1459 * The math code has been replaced with a math library based on fdlibm from
1460 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1461 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1462 functions. The math functions now reside in a separate library, so
1463 programs using them will need to use `-lm' their linking commands.
1465 * John C. Bowman contributed optimized ix87 assembler inline functions.
1467 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1468 mechanism similar to that found in Solaris 2. This is now used for the
1469 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1470 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1471 file controls what services are used for each individual database. This
1472 works by loading shared libraries with names specified in `nsswitch.conf',
1473 so service modules can be changed or added at any time without even
1474 relinking any program. Currently there are the file, db, and NIS based
1475 NSS services available.
1477 * The new functions `strtoq' and `strtouq' parse integer values from
1478 strings, like `strtol' and `strtoul', but they return `long long int' and
1479 `unsigned long long int' values, respectively (64-bit quantities).
1481 * The new functions `strtof' and `strtold' parse floating-point values from
1482 strings, like `strtod', but they return `float' and `long double' values,
1483 respectively (on some machines `double' and `long double' are the same).
1485 * Ulrich Drepper has contributed new implementations of the floating-point
1486 printing and reading code used in the `printf' family of functions and
1487 `strtod', `strtof', and `strtold'. These new functions are perfectly
1488 accurate, and much faster than the old ones.
1490 * The implementation of the POSIX locale model was completely rewritten by
1491 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1492 to compile the POSIX locale definition.
1494 * The former dummy implementations of the strcoll and strxfrm function are
1495 now replaced by fully functional code contributed by Ulrich Drepper. The
1496 collation information comes from the POSIX locale definitions.
1498 * The new header <langinfo.h> defines an interface for accessing
1499 various locale-dependent data (using the locale chosen with `setlocale').
1501 * Ulrich Drepper has contributed a new suite of functions for operation on
1502 wide-character and multibyte-character strings, in <wchar.h>;
1503 and classification and case conversion of wide characters, in <wctype.h>.
1504 These new functions are conforming to the ISO C, Amendement 1 specification.
1506 * There is now a second implementation of the standard I/O library available.
1507 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1508 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1510 * You can now use positional parameter specifications in format strings
1511 for the `printf' and `scanf' families of functions. For example,
1512 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1513 ``Number 6, Mr Jones''. This is mainly useful when providing different
1514 format strings for different languages, whose grammars may dictate
1515 different orderings of the values being printed. To support this
1516 feature, the interface for `register_printf_handler' has changed; see
1517 the header file <printf.h> for details.
1519 * The `printf' and `scanf' families of functions now understand a new
1520 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1521 to group numbers as indicated by the locale; for `scanf' and friends, this
1522 says to accept as valid only a number with all the proper grouping
1523 separators in the right places. In the default "C" locale, numbers are
1524 not grouped; but locales for specific countries will define the usual
1525 conventions (i.e. separate thousands with `,' in the US locale).
1527 * The pgrp functions have been regularized, slightly incompatibly but much
1528 less confusingly. The core functions are now `getpgid' and `setpgid',
1529 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1530 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1531 provided for compatibility. There is no longer an incompatible `getpgrp'
1532 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1534 * The new header file <fts.h> and suite of functions simplify programs that
1535 operate on directory trees. This code comes from 4.4 BSD.
1537 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1538 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1539 NSS scheme used in glibc.
1541 * There is a new malloc debugging hook `__memalign_hook'.
1543 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1544 `unsigned int' in <sys/types.h>. These are for compatibility only and
1545 their use is discouraged.
1547 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1548 done differently, so that it works even without GNU ld.
1550 * New function `euidaccess' checks allowed access to a file like `access',
1551 but using the effective IDs instead of the real IDs.
1553 * The time zone data files have been updated for the latest and greatest
1554 local time conventions of the countries of the world.
1556 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1559 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1560 for formatting floating-point numbers. They are provided only for
1561 compatibility; new programs should use `sprintf' instead. There are
1562 also equivalent function for the `long double' floating-point type and
1563 all functions also exist in a reentrant form.
1565 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1566 functions for maintaining the login-record files (primarily of use to
1567 system programs such as `login'), and convenient functions for
1568 allocating and initializing a pseudo-terminal (pty) device.
1570 * Ulrich Drepper has contributed new support for System V style
1571 shared memory and IPC on systems that support it.
1573 * Ulrich Drepper has contributed several miscellaneous new functions found
1574 in System V: The `hsearch' family of functions provide an effective
1575 implementation of hash tables; `a64l' and `l64a' provide a very simple
1576 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1579 * Ulrich Drepper has contributed new reentrant counterparts for the
1580 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1582 * Ulrich Drepper has contributed new, highly-optimized versions of several
1583 string functions for the i486/Pentium family of processors.
1585 * Ulrich Drepper has updated the Linux-specific code, based largely
1586 on work done in Hongjiu Lu's version of GNU libc for Linux.
1587 The GNU library now supports Linux versions 2.0.10 and later,
1588 using the ELF object file format (i[3456]86-*-linux).
1590 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1592 * David Mosberger-Tang and Richard Henderson have ported the C library
1593 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1594 dynamic linking support for ELF/Alpha.
1596 * Richard Henderson contributed several Alpha optimized assembler function
1597 for arithmetic and string handling.
1599 * Ulrich Drepper has contributed a new set of message catalog functions to
1600 support multiple languages using the <libintl.h> interface, for use with
1601 his new package GNU gettext. Translation volunteers have contributed
1602 catalogs of the library's messages in Spanish, German, and Korean.
1604 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1605 program and the `catgets' function for reading the catalog files it
1606 creates. (The <libintl.h> interface is preferred; we include the
1607 <nl_types.h> interface using `catgets' only for source compatibility with
1608 programs already written to use it.)
1610 * New header file <values.h> gives SVID-compatible names for <limits.h>
1613 * Various new macros, declarations, and small header files for compatibility
1616 * New function `group_member' is a convenient way to check if a process has
1617 a given effective group ID.
1619 * When using GCC 2.7 and later, the socket functions are now declared in a
1620 special way so that passing an argument of type `struct sockaddr_in *',
1621 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1622 `struct sockaddr *' type, does not generate a type-clash warning.
1624 * New function `error' declared in header file <error.h> is a convenient
1625 function for printing error messages and optionally exiting; this is the
1626 canonical function used in GNU programs. The new functions `err', `warn',
1627 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1628 doing the same thing.
1630 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1631 POSIX.2 `glob' function to do ~ and {...} expansion.
1633 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1634 `clearenv' which is used in POSIX.9 is also available.
1636 * New function `getsid' returns session ID number on systems that support it.
1638 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1639 files <db.h> and <mpool.h> provide a rich set of functions for several
1640 types of simple databases stored in memory and in files, and <ndbm.h> is
1641 an old `ndbm'-compatible interface using the `db' functions. Link with
1642 `-ldb' to get these functions.
1644 * New macro `strdupa' copies a string like `strdup', but uses local stack
1645 space from `alloca' instead of dynamic heap space from `malloc'.
1647 * New function `strnlen' is like `strlen' but searches only a given maximum
1648 number of characters for the null terminator. `stpncpy', `strndup' and
1649 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1652 * New function `statfs' in header <sys/statfs.h>.
1654 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1655 provide convenient functions for operating on blocks of null-terminated
1658 * A new suite of functions in <utmp.h> handle all the details of reading
1659 and writing the utmp file.
1661 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1664 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1665 completely POSIX compliant and also implemented the extended functionality
1666 to handle alternate digit representation and alternate era date formats.
1668 * Ulrich Drepper provided an implementation of the `strptime' function
1669 defined in XPG4.2 which transforms a string into a `struct tm' value.
1671 * Paul Eggert provided the tzselect shell script as part of the timezone
1672 code. The shell script makes it easy to select the correct timezone
1675 * The implementation of the malloc family of functions is completely replaced
1676 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1677 The implementation uses the mmap function (if available) and it is
1678 optimized for the use in multi threaded programs.
1680 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1681 functions. This new functionality is usable by specifying a special
1682 salt string and it is compatible with implementation on *BSD systems.
1684 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1685 `getsubopt' to handle second level command line options, `bsd_signal'
1686 to access BSD style `signal' functionality, the obsolete `regexp' style
1689 * the `lchown' function is available on system which support this
1692 * The implementation of the shadow password handling function was contributed
1695 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1697 * POSIX.1g support was added. The <sys/select.h> header is available,
1698 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1699 implementation of `getaddrinfo'.
1703 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1705 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1706 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1708 * The new function `daemon' from 4.4 BSD is useful for server programs that
1709 want to put themselves in the background.
1711 * Joel Sherrill has contributed support for several standalone boards that
1712 run without an operating system.
1714 * `printf', `scanf' and friends now accept a `q' type modifier for long
1715 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1717 * All of the code taken from BSD (notably most of the math and networking
1718 routines) has been updated from the BSD 4.4-Lite release.
1720 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1722 * The new functions `getdomainname' and `setdomainname' fetch or change the
1723 YP/NIS domain name. These are system calls which exist on systems which
1726 * The time zone data files have been updated for the latest international
1729 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1730 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1734 * The C library now includes support for Sun RPC, from Sun's free
1735 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1736 are included. (There is still no support for YP.)
1738 * Tom Quinn has contributed a port of the C library to SGI machines running
1739 Irix 4 (mips-sgi-irix4).
1741 * The new `lockf' function is a simplified interface to the locking
1742 facilities of `fcntl', included for compatibility.
1744 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1746 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1748 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1751 * The error message printed by `assert' for a failed assertion now includes
1752 the name of the program (if using GNU ld) and the name of the calling
1753 function (with versions of GCC that support this).
1755 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1757 * The library now includes the <sys/mman.h> header file and memory
1758 management functions `mmap', `munmap', `mprotect', `msync', and
1759 `madvise', on systems that support those facilities.
1761 * The interface for `mcheck' has changed slightly: the function called to
1762 abort the program when an allocation inconsistency is detected now takes
1763 an argument that indicates the type of failure. The new function
1764 `mprobe' lets you request a consistency check for a particular block at
1765 any time (checks are normally done only when you call `free' or `realloc'
1768 * It is now possible to easily cross-compile the C library, building on one
1769 system a library to run on another machine and/or operating system. All
1770 you need to do is set the variable `HOST_CC' in `configparms' to the
1771 native compiler for programs to run on the machine you are building on (a
1772 few generator programs are used on Unix systems); set `CC' to the
1775 * The new function `fexecve' (only implemented on the GNU system) executes
1776 a program file given a file descriptor already open on the file.
1780 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1781 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1783 * You can set the variable `libprefix' in `configparms' to specify a prefix
1784 to be prepended to installed library files; this makes it easy to install
1785 the GNU C library to be linked as `-lgnuc' or whatever.
1787 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1788 copies a limited number of characters from a string, and returns the
1789 address of the last character written.
1791 * You no longer need to check for whether the installed `stddef.h' is
1792 compatible with the GNU C library. configure now checks for you.
1794 * You can now define a per-stream `fileno' function to convert the
1795 stream's cookie into an integral file descriptor.
1797 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1798 allocates zero bytes of storage, and returns a unique pointer which
1799 you can pass to `realloc' or `free'. The behavior is undefined if
1800 you dereference this pointer.
1802 * The C library now runs on Sony NEWS m68k machines running either
1803 NewsOS 3 or NewsOS 4.
1805 * The new `syscall' function is a system-dependent primitive function
1806 for invoking system calls. It has the canonical behavior on Unix
1807 systems, including unreliable return values for some calls (such as
1808 `pipe', `fork' and `getppid').
1810 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1811 to `EAGAIN', which is the preferred name. On systems whose kernels
1812 use two distinct codes, the C library now translates EWOULDBLOCK to
1813 EAGAIN in every system call function.
1817 * The GNU C Library Reference Manual is now distributed with the library.
1818 `make dvi' will produce a DVI file of the printed manual.
1819 `make info' will produce Info files that you can read on line using C-h i
1820 in Emacs or the `info' program.
1821 Please send comments on the manual to bug-glibc-manual@gnu.org.
1823 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1825 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1827 * Jason Merrill has contributed a port to the Sequent Symmetry running
1828 Dynix version 3 (i386-sequent-dynix).
1830 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1831 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1833 * New function `memory_warnings' lets you arrange to get warnings when
1834 malloc is running out of memory to allocate, like Emacs gives you.
1836 * The C library now contains the relocating allocator used in Emacs 19 for
1837 its editing buffers. This allocator (ralloc) minimizes allocation
1838 overhead and fragmentation by moving allocated regions around whenever it
1839 needs to. You always refer to a ralloc'd region with a "handle" (a
1840 pointer to a pointer--an object of type `void **').
1842 * There is a new `printf' format: `%m' gives you the string corresponding
1843 to the error code in `errno'.
1845 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1846 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1847 pass, the `a' modifier says to fill in a `char **' you pass with a
1850 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1851 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1852 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1854 * `mkstemp' is a traditional Unix function to atomically create and open a
1855 uniquely-named temporary file.
1859 * The standard location for the file that says what the local timezone is
1860 has changed again. It is now `/usr/local/etc/localtime' (or more
1861 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1863 * The distribution no longer contains any files with names longer than 14
1866 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1867 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1869 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1873 * The configuration process has changed quite a bit. The `configure'
1874 script is now used just like the configuration scripts for other GNU
1875 packages. The `sysdeps' directory hierarchy is much rearranged.
1876 The file `INSTALL' explains the new scheme in detail.
1878 * The header files no longer need to be processed into ANSI C and
1879 traditional C versions. There is just one set of files to install, and
1880 it will work with ANSI or old C compilers (including `gcc -traditional').
1882 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1883 MIPS DECStation running Ultrix 4.
1885 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1886 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1887 made itself into a shared library.
1889 * Yet further improved support for the i386, running 4.3 BSD-like systems
1890 (such as Mach 3 with the Unix single-server), or System V.
1892 * New function `strncasecmp' to do case-insensitive string comparison
1893 with limited length.
1895 * New function `strsep' is a reentrant alternative to `strtok'.
1897 * New functions `scandir' and `alphasort' for searching directories.
1899 * New function `setenv' is a better interface to `putenv'.
1901 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1902 function for traversing a directory tree.
1904 * The GNU obstack package is now also part of the C library.
1905 The new function `open_obstack_stream' creates a stdio stream that
1906 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1907 formatted output directly to an obstack.
1909 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1910 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1912 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1914 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1915 things to your strings.
1917 * There are some new test programs: test-fseek, testmb, and testrand.
1919 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1920 These ports are not finished, but are a good starting place for really
1921 supporting those systems.
1923 * `/etc/localtime' is now the standard location for the file that says what
1924 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1925 This follows the general principle that `/etc' is the place for all local
1926 configuration files.
1928 * The C library header files now use `extern "C"' when used by the C++
1929 compiler, so the C library should now work with C++ code.
1931 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1932 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1935 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1936 function which uses the `merge sort' algorithm, and is said to be
1937 significantly faster than the old GNU `qsort' function. Merge sort is
1938 now the standard `qsort' function. The new algorithm can require a lot
1939 of temporary storage; so, the old sorting function is called when the
1940 required storage is not available.
1942 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1943 provides the Unix `crypt' function, plus some other entry points.
1945 * The code and header files taken from 4.4 BSD have been updated with the
1946 latest files released from Berkeley.
1948 ----------------------------------------------------------------------
1949 Copyright information:
1951 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
1953 Permission is granted to anyone to make or distribute verbatim copies
1954 of this document as received, in any medium, provided that the
1955 copyright notice and this permission notice are preserved,
1956 thus giving the recipient permission to redistribute in turn.
1958 Permission is granted to distribute modified versions
1959 of this document, or of portions of it,
1960 under the above conditions, provided also that they
1961 carry prominent notices stating who last changed them.
1964 version-control: never