1 GNU C Library NEWS -- history of user-visible changes. 2011-5-14
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:
12 386, 11257, 11258, 11487, 11532, 11578, 11653, 11668, 11724, 11945, 11947,
13 12052, 12083, 12158, 12178, 12200, 12346, 12393, 12420, 12432, 12445,
14 12449, 12454, 12460, 12469, 12489, 12509, 12510, 12511, 12518, 12527,
15 12541, 12545, 12551, 12582, 12583, 12587, 12597, 12601, 12611, 12625,
16 12626, 12631, 12650, 12653, 12655, 12660, 12681, 12685, 12711, 12713,
17 12714, 12717, 12723, 12724, 12734, 12738
19 * The RPC implementation in libc is obsoleted. Old programs keep working
20 but new programs cannot be linked with the routines in libc anymore.
21 Programs in need of RPC functionality must be linked against TI-RPC.
22 The TI-RPC implemtation is IPv6 enabled and there are other benefits.
24 Visible changes of this change include (obviously) the inability to link
25 programs using RPC functions without referencing the TI-RPC library and the
26 removal of the RPC headers from the glibc headers.
27 Implemented by Ulrich Drepper.
29 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
32 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
33 yue_HK, lij_IT, mhr_RU
35 * New encodings: CP770, CP771, CP772, CP773, CP774
39 * The following bugs are resolved with this release:
41 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11611, 11640,
42 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979, 12005,
43 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113, 12140,
44 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348, 12378,
47 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
49 * POWER7 optimizations: memset, memcmp, strncmp
51 * New optimized string functions for x86-64: strnlen (SSE2),
52 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
53 Implemented by Ulrich Drepper.
57 * The following bugs are resolved with this release:
59 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
60 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
61 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
62 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
63 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
64 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
65 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
66 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
68 * New interfaces: pthread_getname_np, pthread_setname_np
70 * New Linux interface: recvmmsg
72 * STT_GNU_IFUNC implemented for Sparc by David Miller.
74 * The dynamic linker now recognizes supported ABI versions from the
75 EI_ABIVERSION field in the ELF header.
76 Implemented by Ulrich Drepper.
78 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
79 will not be used to fill in password fields in the passwd.byname replies.
80 Instead it is used to synthesize the shadow.byname table, should it be
81 missing. This is a useful mode in some installations involving Solaris.
82 Implemented by Ulrich Drepper.
84 * New locales: kok_IN, sq_MK, cv_RU
88 * The following bugs are resolved with this release:
90 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
91 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
92 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
93 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
94 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
95 10789, 10817, 10823, 10840, 10847
97 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
99 Implemented by Ulrich Drepper.
101 * Checking version of longjmp added that fails if an uninitialized stack
102 frame would be created. Implemented by Ulrich Drepper.
104 * STT_GNU_IFUNC is now supported in static executables.
105 Implemented by H.J. Lu.
107 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
109 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
110 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
111 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
112 Contributed by H.J. Lu.
114 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
115 Implemented by Ulrich Drepper.
117 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
119 Contributed by H.J. Lu.
121 * Support for fma instruction in AVX on x86-64.
122 Implemented by H.J. Lu and Ulrich Drepper.
124 * AVX support in x86-64 auditing support in ld.so.
125 Implemented by H.J. Lu.
127 * STB_GNU_UNIQUE support added.
128 Implemented by Ulrich Drepper.
130 * Implement second fallback mode for optimized DNS lookup for even more
131 broken environments. If two requests from the same port are not
132 handled correctly close the socket and open a new one before sending
133 the second request. The 'single-request-reopen' option in /etc/resolv.conf
134 can be used to select this mode right away, instead of rediscovering the
135 necessity is every process again.
136 Implemented by Ulrich Drepper.
138 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
139 Implemented by Adam Tkac.
141 * Optimized iconv conversions for S390x.
142 Implemented by Andreas Krebbel.
144 * Using condvars with PI mutexes is now more efficient due to kernel
145 support for requeueing to PI futexes. NPTL support added for x86-64.
146 Implemented by Ulrich Drepper.
148 * New locales: ps_AF, my_MM
152 * The following bugs are resolved with this release:
154 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
155 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
156 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
157 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
158 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
160 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
161 Implemented by Ulrich Drepper.
163 * New Linux interfaces: accept4, fallocate, fallocate64.
164 Implemented by Ulrich Drepper.
166 * Correct declarations of string function when used in C++ code. This
167 could lead to compile errors for invalid C++ code.
169 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
172 * New POSIX 2008 interface: psiginfo
173 Implemented by Ulrich Drepper.
175 * New ISO C++1x interfaces: quick_exit, at_quick_exit
176 Implemented by Ulrich Drepper.
178 * Support for selecting between multiple function definitions at runtime
179 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
181 * The libcrypt library can now use the hash function implementations in
182 NSS. Implemented by Ulrich Drepper.
184 * The malloc implementation can be compiled to be less memory efficient
185 but higher performing in multi-threaded programs.
186 Implemented by Ulrich Drepper.
188 * New locales: nan_TW@latin, ks_IN
190 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
191 Implemented by Ulrich Drepper.
193 * Extended printf hook support. It is possible to use user-defined types
194 and extend existing format specifiers.
195 Implemented by Ulrich Drepper.
197 * Handling for group shadow files has been added.
198 Implemented by Ulrich Drepper.
200 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
201 servers (the case, e.g., for some people using the built-in DNS
202 server in ADSL modems/routers). There is a once-per-process timeout
203 in case of a broken server. To avoid it, users can run nscd or put
204 'options single-request' in /etc/resolv.conf.
205 Implemented by Ulrich Drepper.
209 * The following bugs are resolved with this release:
211 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
212 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
213 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
214 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
215 6968, 6974, 6980, 6995, 7008, 7009, 7029
217 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
218 up at the same time. Implemented by Ulrich Drepper.
220 * TLS descriptors for LD and GD on x86 and x86-64.
221 Implemented by Alexandre Oliva.
223 * getaddrinfo now handles DCCP and UDPlite.
224 Implemented by Ulrich Drepper.
226 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
227 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
228 Implemented by Ulrich Drepper.
230 * New implementation of memmem, strstr, and strcasestr which is O(n).
231 Implemented by Eric Blake.
233 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
235 * Implement "e" option for popen to open file descriptor with the
236 close-on-exec flag set. Implemented by Ulrich Drepper.
238 * Implement "b" mode for fmemopen. In this mode writes writes don't
239 implicitly add a NUL byte and seeks from the end of the buffer really
240 use the buffer end, not the string length as the basis.
241 Implemented by Ulrich Drepper.
243 * Many functions, exported and internal, now atomically set the close-on-exec
244 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
246 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
248 Implemented by Pravin Satpute.
250 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
254 * The following bugs are resolved with this release:
256 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
257 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
258 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
259 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
260 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
261 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
262 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
264 * New locales: bo_CN, bo_IN, shs_CA.
266 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
268 * Sorting rules for some Indian languages (Devanagari and Gujarati).
269 Implemented by Pravin Satpute.
271 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
273 * nscd caches now all timeouts for DNS entries
274 Implemented by Ulrich Drepper.
276 * nscd is more efficient and wakes up less often.
277 Implemented by Ulrich Drepper.
279 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
280 vdprintf, and obstack_vprintf.
281 Implemented by Jakub Jelinek.
283 * Faster memset for x86-64.
284 Implemented by Harsha Jagasia and H.J. Lu.
286 * Faster memcpy on x86.
287 Implemented by Ulrich Drepper.
289 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
290 Implemented by Ulrich Drepper.
292 * Faster sqrt and sqrtf implemention for some PPC variants.
293 Implemented by Stephen Munroe.
297 * The following bugs are resolved with this release:
299 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
300 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
301 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
302 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
303 5071, 5103, 5104, 5112, 5113, 5184, 5186
305 * More checking functions: fread, fread_unlocked, open*, mq_open.
306 Implemented by Jakub Jelinek and Ulrich Drepper.
308 * Extend fortification to C++. Implemented by Jakub Jelinek.
310 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
311 by not recognizing 'a' as a modifier when those specs are requested.
312 Implemented by Jakub Jelinek.
314 * PPC optimizations to math and string functions.
315 Implemented by Steven Munroe.
317 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
318 options to be passed. Implemented by Ulrich Drepper.
320 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
322 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
323 Implemented by Ulrich Drepper.
325 * Handle private futexes in the NPTL implementation.
326 Implemented by Jakub Jelinek and Ulrich Drepper.
328 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
329 Implemented by Roland McGrath and Ulrich Drepper.
331 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
333 * SHA-256 and SHA-512 based password encryption.
334 Implemented by Ulrich Drepper.
336 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
337 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
340 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
341 Implemented by Ulrich Drepper.
345 * The following bugs are resolved with this release:
347 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
348 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
349 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
350 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
351 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
352 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
353 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
356 * New Linux interfaces: epoll_pwait, sched_getcpu.
358 * New generic interfaces: strerror_l.
360 * nscd can now cache the services database. Implemented by Ulrich Drepper.
364 * The following bugs are resolved with this release:
366 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
367 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
368 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
369 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
370 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
371 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
372 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
373 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
374 3225, 3251, 3252, 3253, 3273
376 * For Linux, the sorting of addresses returned by getaddrinfo now also
377 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
378 Implemented by Ulrich Drepper.
380 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
381 Implemented by Ulrich Drepper.
383 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
385 * New iconv module for MIK. Contributed by Alexander Shopov.
387 * For sites with broken group and/or passwd database, the auto-propagate
388 option of nscd can prevent creating ID lookup entries from the results
389 of a name lookup and vice versa. This usually is no problem but some
390 site might have problems with the default behavior.
391 Implemented by Ulrich Drepper.
393 * Iterating over entire database in NIS can be slow. With the
394 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
395 to trade time for memory. The entire database will be read at once.
396 Implemented by Ulrich Drepper.
398 * The interfaces introduced in RFC 3542 have been implemented by
401 * Support for the new ELF hash table format was added by Ulrich Drepper.
403 * Support for priority inheritance mutexes added by Jakub Jelinek and
406 * Support for priority protected mutexes added by Jakub Jelinek.
408 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
409 or_IN, csb_PL, fy_NL, sr_ME.
413 * More overflow detection functions.
415 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
416 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
418 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
419 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
420 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
421 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
422 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
423 by Masahide Washizawa.
425 * It is now possible to install audit libraries for the dynamic linker using
426 LD_AUDIT. Implemented by Ulrich Drepper.
428 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
429 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
430 For a libc and libpthread that works well on Linux 2.4 kernels, we
431 recommend using the stable 2.3 branch.
433 * The new function open_wmemstream acts like open_memstream,
434 but uses a wchar_t wide character buffer.
436 * The new function ppoll is an improved version of poll, similar to pselect.
438 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
439 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
440 renameat, unlinkat, linkat, symlinkat, readlinkat.
442 * New Linux kernel system calls: unshare,
443 inotify_init, inotify_add_watch, inotify_rm_watch.
445 * The euidaccess function is now also known by the alias eaccess,
446 for compatibility with some other systems.
448 * Timezone data updated to 2006b version.
452 * The following bugs are resolved with this release:
454 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
455 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
456 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
457 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
458 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
459 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
461 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
463 * As of this release, GCC 4 can be used to compile the C Library.
465 * Timezone data updated to 2005m version.
469 * The following bugs are resolved with this release:
471 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
472 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
473 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
474 777, 787, 821, 822, 823, 825
476 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
480 * Support for RFC 3678. Real implementations exist only for Linux so far.
481 Implemented by Ulrich Drepper.
483 * nscd can now cache entries persistently. Expiring entries are reloaded.
484 For speedups the cache can be shared in memory with client processes.
485 Implemented by Ulrich Drepper.
487 * nscd can now perform SELinux checks.
488 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
490 * getaddrinfo queries are now cached. Canonical name lookup is performed
492 Implemented by Ulrich Drepper.
494 * The nothrow function attribute is used when headers are used by gcc when
495 compiling C code. This can avoid significant amounts of exception
498 * The malloc functions perform more error checking and are stricter when
499 it comes to reacting on errors. The default action is to terminate
500 the process after showing an error message. Implemented by Ulrich Drepper.
502 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
503 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
505 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
506 namespaces using the new function dlmopen(). This feature is of course,
507 like most other dynamic loading functionality, not available in statically
508 linked applications. Implemented by Ulrich Drepper.
510 * Low-overhead boundary checking variants of string and some stdio functions
511 were added. These are to be used in conjunction with a gcc patch by
512 Jakub Jelinek which adds calls to these functions if possible.
513 Implemented by Jakub Jelinek and Ulrich Drepper.
515 * Old code for several operating systems and machine architectures that
516 have not been in working condition in a long time have been removed from
517 the main source tree maintained by the GNU C Library's maintainers.
518 These files are now reside in the separate `ports' source module
519 that is usable as an add-on when building the library.
523 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
524 interrogate the dynamic linker, compatible with the Solaris interface.
526 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
527 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
529 * getifaddrs now uses the netlink interface on Linux to get its information.
530 Implemented by Thorsten Kukuk.
532 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
533 Implemented by Ulrich Drepper.
535 * support for non-executable stacks on x86 has been added. Changes mostly
538 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
541 * getaddrinfo now performs destination address selection according to
546 * Thread-safe interfaces for many functions that access locale data
547 were added in version 2.3, but these features were omitted from NEWS.
548 Many functions have variants with an `_l' suffix that take a `locale_t'
549 object as a parameter rather than consulting the current locale.
550 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
551 create and maintain `locale_t' objects. Additionally, the new function
552 `uselocale' sets "the current locale" (as used by functions not so
553 parameterized) set for an individual thread. These features were added
554 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
556 * The functions getresuid, getresgid, setresuid, and setresgid, which
557 have long been available on Linux, are now declared in <unistd.h>
558 and are now also available on the Hurd.
560 * ELF thread-local storage support (TLS) now works on x86-64.
562 * The new dynamic string token $LIB is expanded in shared library names.
563 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
565 * Aldy Hernandez contributed complete software floating point support for
566 PowerPC machines with no FPU.
568 * fexecve is implemented on Linux.
570 * The `btowc' function should work at least twice as fast due to
571 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
573 * With approriate thread add-ons cancelable functions are now implemented
574 in libc.so as well. No need to call the function in libpthread. This
575 change allowed to finally disable the incorrect and expensive handling
576 of weak definition in ld.so.
578 * Yet more PLT entries in libc.so have been removed. We finally arrived
579 at the bare minimum. Startup times improved appropriately.
581 * Support for the new Linux/x86 system call interface was added. The
582 AT_SYSINFO auxiliary vector entry is recognized and handled.
586 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
589 * iconv (the program and the interface) now accepts empty names (excluding
590 options like //TRANSLIT) to mean "use charset of current locale".
592 * localedef can now transliterate characters in strings which are not in
593 the provided charmap. The information from the input locale is used.
595 * Prelinking support was added for ELF targets. This requires additional
596 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
598 * Read-only stdio streams now use mmap to speed up operation by eliminating
599 copying and buffer underflows. To use add 'm' to the mode string of
600 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
602 * The malloc functions were completely rewritten by Wolfram Gloger based
603 on Doug Lea's malloc-2.7.0.c.
605 * Isamu Hasegawa contributed a completely new and POSIX-conformant
606 implementation of regex.
608 * Bruno Haible upgraded the iconv and locale implementation to support
611 * Contents of the LC_* and LANG environment variables in the CEN style are
612 not recognized anymore. It never was used. Change by Ulrich Drepper.
614 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
615 thread-local storage (TLS) ABI on some platforms.
616 Changes by Ulrich Drepper. SH support by Kaz Kojima.
618 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
619 EUC-JISX0213, and TSCII.
621 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
622 BSD-compatible interface for getting all network interface addresses.
623 Implementation for IPv4 by Roland McGrath.
625 * Loading of locale data is faster due to the introduction of a locale
626 archive. Implemented by Roland McGrath and Ulrich Drepper.
628 * Startup times are significantly reduced by not using exported functions
629 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
632 * Steven Munroe contributed a port to PowerPC64/Linux.
636 * The Hurd now uses the GNU libio implementation of stdio rather than the
637 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
639 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
640 with the same behavior as the Linux system call of the same name.
644 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
645 128-bit long double format.
647 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
648 IBM1161, and IBM1162 charsets.
650 * Andreas Jaeger contributed a port to x86-64/Linux.
652 * Peter Bruin contributed a port to PowerPC/Hurd.
654 * libc functions using I/O streams now can handle wide-oriented streams
657 * optimizations in the dynamic linker. Binaries created by recent binutils
658 versions start up quicker due to reduced time spent on relocations.
660 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
664 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
665 asinh, atanh, j0 for the 128-bit long double format.
667 * Bruno Haible updated all the code handling Unicode in some form to
670 * Speed of regex for single-byte locales is back to previous levels.
671 Patch by Isamu Hasegawa.
673 * Alpha, SPARC, and IA-64 now also using floating stacks.
675 * Startup time of internationalized applications greatly improved through
676 iconv cache. Use iconvconfig to generate the cache file.
677 Contributed by Ulrich Drepper.
679 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
680 severe performance problems. Patch by David Mosberger.
682 * The Hurd port got a lot more functionality like AIO, various stdio
683 extensions, etc. Mainly done by Roland McGrath.
685 * mtrace can now lookup symbols in shared libraries.
689 * Intel's IA-64 math library is largely integrated. It provides fast and
690 accurate implementatations for most basic and standard math functions
691 in float, double, and long double format.
693 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
694 and asin for the 96-bit long double format and asin, log, tan for the
695 128-bit long double format.
697 * The beginning of a last-bit accurate math library by IBM Haifa were added.
698 The basic double functions exist today. Contributed by Abraham Ziv
699 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
700 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
702 * An asynchronous name lookup library was added. The interface is designed
703 after POSIX AIO. The proposal was circulated beforehand to get comments.
704 No negative ones came in. Implemented by Ulrich Drepper.
706 * Port to S390/64bit contributed by Martin Schwidefsky
707 <schwidefsky@de.ibm.com>.
709 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
710 of functions for Linux/IA-64.
712 * The RPC code is now thread safe. Threads can now use the same service
713 of different services at the same time. Patch by Eric Norum
714 <eric.norum@usask.ca> with some help by Ulrich Drepper.
716 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
717 family of functions for Linux/S390.
719 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
720 of functions for Linux/x86.
722 * Port to Linux/CRIS contributed by Axis Communications.
726 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
727 we can now check for namespace violations and missing declarations. The
728 result is that almost all headers are now Unix-compliant (as defined in
729 the upcoming XPG6). The negative side is that some programs might need
730 corrections, too, if they depend on the incorrect form of the headers in
731 previous versions which defined too many symbols and included too many
734 * regex now handles multibyte character sets correctly.
735 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
737 * iconv (the program) does now conform to the upcoming XPG6 and handles
738 charmaps. Instead of the charset names the path of charmaps can be
739 provided and the conversion happens based on this data.
740 Contributed by Ulrich Drepper.
742 * The locale program now provides detailed information about the installed
747 only lists the names of the supported locales
751 provides details such as country, language, and codeset name.
752 Contributed by Ulrich Drepper.
756 * The gencat program now parses the input file according to the charset
757 selected by the LC_CTYPE category. This is important for stateful
758 character sets. To make generating catalogs easier there is a way
759 to overwrite the charset selected by the locale: before the first
760 message or $ quote line the catalog can contain a line like
764 to select the charset (ISO-8859-2 in this case).
766 Implemented by Shinya Hanataka and Ulrich Drepper.
768 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
769 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
770 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
772 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
773 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
775 * The LANGUAGE environment variable is now ignored unless the locale is
776 changed from the default "C" locale.
778 * The usual bug fixes.
782 * Greg McGary added runtime support for bounds checking using gcc's
783 new -fbounded-pointers option. ix86 target is complete. PowerPC
786 * Thorsten Kukuk added secure mode support to nscd.
788 * The Berkeley db libraries have been removed.
790 Related, the nss_db module is now in a separate package since it
791 obviously requires a database library being available.
793 * Wide character I/O streams implemented by Ulrich Drepper.
795 * Functions from the extended socket API added by Ulrich Drepper.
797 * Functions feenableexcept and fedisableexcept to control the
798 behaviour of individual exceptions have been added by Andreas Jaeger.
800 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
802 * The resolver code has been updated from bind 8.2.3-T5B which supports
803 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
806 This change could in some situations effect backward compatibility. Since
807 now `_res' is a thread-local instead of a global variable, modifying it
808 in one thread does not have any effect in other threads.
810 The resolver library was also extended to allow IPv6 as the transport
811 protocol for the requests. This work was done by Stig Venaas.
813 * Compatibility code for K&R C compilers has been removed from the
814 header files. A ISO C compiler is needed to use the library
815 (conforming to either C89 or C99 standard).
817 * Complete rewrite of the localedef program to support multibyte character
818 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
819 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
820 Implemented by Ulrich Drepper.
822 Bruno Haible significantly improved the generation and use of the data
823 structures for the wide character tables.
825 * Plural handling in gettext implemented by Ulrich Drepper.
827 * The utmp daemon has been removed.
829 * The port to MIPS-Linux has been finished by Andreas Jaeger.
831 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
834 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
836 * POSIX barriers implemented by Kaz Kylheku.
838 * POSIX spawn function family implemented by Ulrich Drepper.
840 * POSIX spinlocks are now available.
842 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
844 * the configure option --enable-kernel=X.Y.Z allows to strip out
845 compatibility for kernel versions before X.Y.Z. This is currently only
846 implemented for Linux.
848 * the sockaddr_in6 structure changed. The IPv6 working group added a new
849 field sin6_scope_id. This means that all programs using IPv6 should be
850 recompiled. Don't expect binary compatibility with previous glibc
853 * various conversion modules for IBM character sets contributed by
856 * IA-64 port by Jes Sorensen and HJ Lu.
858 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
859 Compiling the GNU C Library for Linux/ia64
860 ******************************************
862 Please refer to the file INSTALL in the same directory as you found
863 this file for general information about configuring and compiling
866 For general inquiries about glibc under Linux/ia64 please use the
867 following mailing list linux-ia64@linuxia64.org or one of the relevant
870 Recommended Tools for Compilation
871 =================================
873 In order for glibc-2.2 to build correctly on the ia64 you need at
874 least the following versions of the GNU tools (the :
876 * The Cygnus toolchain snapshot for the ia64 as of August 4
877 including the provided set of patches. It is however recommend
878 you use the October 24 toolchain snapshot or a more recent version.
880 OR alternatively you can try the following (the Cygnus toolchain is
881 the recommended solution):
883 * GCC and binutils, GAS and GNU LD out of CVS from
884 sources.redhat.com as of August 28, 2000 or later. The CVS tree
885 may require special patches to work properly on the ia64.
887 Configuring and compiling GNU Libc for Linux/ia64
888 =================================================
890 The library requires Linux kernel version 2.4.0-test4-000728 or
891 later to funtion properly. Besides that it support for debug libraries
892 is currently untested. Hence the following options
893 are required for configuring the library:
895 --disable-debug --enable-kernel=2.4.0
897 It is also important that you make sure the library picks up the
898 appropriate kernel header files, if you do not have recent enough
899 kernel headers in /usr/src/linux/include, you should use the
900 --with-headers=<path> option to specify the location.
902 As an example I personally use the following options to configure
907 --enable-kernel=2.4.0
911 --with-headers=/home/jes/linux/include
916 Jes Sorensen <jes@linuxcare.com>,
918 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
932 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
934 * New xdr functions are added; some rpc functions are now 64bit clean.
936 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
938 * Fixed known incompatibilities with glibc 2.0.
940 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
942 * Optimized a number of functions (especially the ELF dynamic loader).
944 * Update timezone data files.
946 * lots of charmaps corrections
948 * some new locale definitions and charmaps
953 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
954 conform to POSIX member type requirements. Symbol versions have been
955 adjusted as needed within the library, and for direct use by applications,
956 but there is potential for problems if third-party libraries use
957 struct timeval as part of their interface. This does not present
958 a problem for X and other "essential" system libraries.
960 * An additional locale model to support C++ Standard Library locale
961 model and probably more was implemented by Ulrich Drepper.
963 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
966 * Miles Bader provided the `argp' function family to support hierachical
967 command line argument parsing, layered on top of getopt.
969 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
971 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
974 * scanf recognizes the %a and %A format for scanning floating point numbers.
976 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
977 information and interfaces for the available integer types.
979 * about 130 new math functions were added to implement the ISO C9x math
982 * the new header <complex.h> contains definitions of the complex math
983 functions from ISO C 9X.
985 * the new header <tgmath.h> defines generic macros to use complex or
986 real valued functions.
988 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
990 * Andreas Jaeger provided a test suite for the math library.
992 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
994 * Ulrich Drepper added character set conversion functions (iconv).
996 * Optimized string functions have been added.
998 * The localedata addon is now part of glibc.
1000 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1002 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1003 daemon for NSS (nscd).
1005 Missing a better place here are some numbers on improvements. Under
1006 Linux 2.1.125 un-tar-ing the kernel sources takes
1010 using local files 12.19s 6.88s 22.91s
1012 using NIS 13.92s 8.91s 26.34s
1014 using NIS & nscd 10.37s 7.34s 25.30s
1016 using NIS+ 27.57s 30.37s 640.46s
1018 using NIS+ & nscd 10.25s 7.83s 26.51s
1020 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1022 Keep in mind that non-namelookup related operations dominate above times.
1023 It was just a common complain that using NIS+ unpacking the kernel is
1026 [1] The old nscd implementation is not available anymore since it was
1027 distributed with glibc up to version 2.0.98 and thus is now replaced.
1029 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1031 * Mark Kettenis provided a Hesiod NSS module.
1033 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1034 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1036 * rcmd can now handle netgroups (Dick Streefland).
1038 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1041 * Support for the IPv6 protocol has been added to the socket API, as per the
1042 latest draft standards.
1044 * Support for Linux 2.2 has been added.
1046 * Interface changes relative to the latest 2.0.x release:
1047 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1048 addseverity NEW: Unix98
1049 alphasort64 NEW: LFS
1050 argp_err_exit_status NEW: argp, GNU ext
1051 argp_error NEW: argp, GNU ext
1052 argp_failure NEW: argp, GNU ext
1053 argp_help NEW: argp, GNU ext
1054 argp_parse NEW: argp, GNU ext
1055 argp_program_bug_address NEW: argp, GNU ext
1056 argp_program_version NEW: argp, GNU ext
1057 argp_program_version_hook NEW: argp, GNU ext
1058 argp_state_help NEW: argp, GNU ext
1059 argp_usage NEW: argp, GNU ext
1060 authdes_create NEW: Secure RPC
1061 authdes_getucred NEW: Secure RPC
1062 authdes_pk_create NEW: Secure RPC
1063 backtrace NEW: GNU ext.
1064 backtrace_symbols NEW: GNU ext.
1065 backtrace_symbols_fd NEW: GNU ext.
1067 cacosf NEW: ISO C 9x
1068 cacosh NEW: ISO C 9x
1069 cacoshf NEW: ISO C 9x
1070 cacoshl NEW: ISO C 9x
1071 cacosl NEW: ISO C 9x
1078 casinf NEW: ISO C 9x
1079 casinh NEW: ISO C 9x
1080 casinhf NEW: ISO C 9x
1081 casinhl NEW: ISO C 9x
1082 casinl NEW: ISO C 9x
1084 catanf NEW: ISO C 9x
1085 catanh NEW: ISO C 9x
1086 catanhf NEW: ISO C 9x
1087 catanhl NEW: ISO C 9x
1088 catanl NEW: ISO C 9x
1089 cbc_crypt NEW: Secure RPC
1093 ccoshf NEW: ISO C 9x
1094 ccoshl NEW: ISO C 9x
1100 cimagf NEW: ISO C 9x
1101 cimagl NEW: ISO C 9x
1102 clearerr_locked REMOVED
1103 clntunix_create NEW: sunrpc ext
1105 clog10 NEW: ISO C 9x
1106 clog10f NEW: ISO C 9x
1107 clog10l NEW: ISO C 9x
1117 cprojf NEW: ISO C 9x
1118 cprojl NEW: ISO C 9x
1120 crealf NEW: ISO C 9x
1121 creall NEW: ISO C 9x
1126 csinhf NEW: ISO C 9x
1127 csinhl NEW: ISO C 9x
1130 csqrtf NEW: ISO C 9x
1131 csqrtl NEW: ISO C 9x
1135 ctanhf NEW: ISO C 9x
1136 ctanhl NEW: ISO C 9x
1138 des_setparity NEW: Secure RPC
1139 ecb_crypt NEW: Secure RPC
1140 endutxent NEW: Unix98
1142 exp10f NEW: ISO C 9x
1143 exp10l NEW: ISO C 9x
1147 fattach NEW: STREAMS
1148 fdetach NEW: STREAMS
1152 feclearexcept NEW: ISO C 9x
1153 fegetenv NEW: ISO C 9x
1154 fegetexceptflag NEW: ISO C 9x
1155 fegetround NEW: ISO C 9x
1156 feholdexcept NEW: ISO C 9x
1158 feraiseexcept NEW: ISO C 9x
1159 ferror_locked REMOVED
1160 fesetenv NEW: ISO C 9x
1161 fesetexceptflag NEW: ISO C 9x
1162 fesetround NEW: ISO C 9x
1163 fetestexcept NEW: ISO C 9x
1164 feupdateenv NEW: ISO C 9x
1165 fflush_locked REMOVED
1169 fgets_unlocked NEW: GNU ext.
1170 fileno_locked REMOVED
1182 fputc_locked REMOVED
1183 fputs_unlocked NEW: GNU ext.
1184 fread_unlocked NEW: GNU ext.
1189 fstatvfs NEW: Unix98
1193 ftruncate64 NEW: LFS
1195 fwrite_unlocked NEW: GNU ext.
1196 gai_strerror NEW: IPv6
1200 getchar_locked REMOVED
1202 getdate_err NEW: Unix98
1203 getdate_r NEW: GNU ext.
1205 getnameinfo NEW: IPv6
1206 getnetname NEW: Secure RPC
1207 getpmsg NEW: STREAMS
1208 getpt NEW: Unix98 PTY
1209 getrlimit64 NEW: LFS
1210 getutxent NEW: Unix98
1211 getutxid NEW: Unix98
1212 getutxline NEW: Unix98
1213 glob64 NEW: GNU ext.
1214 globfree64 NEW: GNU ext.
1215 gnu_get_libc_release NEW: GNU ext.
1216 gnu_get_libc_version NEW: GNU ext.
1217 grantpt NEW: Unix98 PTY
1218 host2netname NEW: Secure RPC
1220 iconv_close NEW: iconv
1221 iconv_open NEW: iconv
1222 if_freenameindex NEW: IPv6
1223 if_indextoname NEW: IPv6
1224 if_nameindex NEW: IPv6
1225 if_nametoindex NEW: IPv6
1226 in6addr_any NEW: IPv6
1227 in6addr_loopback NEW: IPv6
1228 inet6_isipv4mapped NEW: IPv6
1229 isastream NEW: STREAMS
1230 iswblank NEW: GNU ext.
1231 key_decryptsession NEW: Secure RPC
1232 key_decryptsession_pk NEW: Secure RPC
1233 key_encryptsession NEW: Secure RPC
1234 key_encryptsession_pk NEW: Secure RPC
1235 key_gendes NEW: Secure RPC
1236 key_get_conv NEW: Secure RPC
1237 key_secretkey_is_set NEW: Secure RPC
1238 key_setnet NEW: Secure RPC
1239 key_setsecret NEW: Secure RPC
1240 llrint NEW: ISO C 9x
1241 llrintf NEW: ISO C 9x
1242 llrintl NEW: ISO C 9x
1243 llround NEW: ISO C 9x
1244 llroundf NEW: ISO C 9x
1245 llroundl NEW: ISO C 9x
1250 lrintf NEW: ISO C 9x
1251 lrintl NEW: ISO C 9x
1252 lround NEW: ISO C 9x
1253 lroundf NEW: ISO C 9x
1254 lroundl NEW: ISO C 9x
1256 makecontext NEW: Unix98
1257 mempcpy NEW: GNU ext.
1260 modify_ldt NEW: kernel
1264 nearbyint NEW: ISO C 9x
1265 nearbyintf NEW: ISO C 9x
1266 nearbyintl NEW: ISO C 9x
1267 netname2host NEW: Secure RPC
1268 netname2user NEW: Secure RPC
1269 nexttoward NEW: ISO C 9x
1270 nexttowardf NEW: ISO C 9x
1271 nexttowardl NEW: ISO C 9x
1275 passwd2des NEW: Secure RPC
1277 pow10f NEW: GNU ext.
1278 pow10l NEW: GNU ext.
1281 printf_size NEW: GNU ext.
1282 printf_size_info NEW: GNU ext.
1283 profil_counter REMOVED
1284 pthread_mutexattr_getkind_np REPLACED
1285 pthread_mutexattr_setkind_np REPLACED
1286 ptsname NEW: Unix98 PTY
1287 ptsname_r NEW: Unix98 PTY
1289 putchar_locked REMOVED
1290 putgrent NEW: GNU ext.
1292 putpmsg NEW: STREAMS
1293 pututxline NEW: Unix98
1297 readdir64_r NEW: LFS
1298 remquo NEW: ISO C 9x
1299 remquof NEW: ISO C 9x
1300 remquol NEW: ISO C 9x
1302 roundf NEW: ISO C 9x
1303 roundl NEW: ISO C 9x
1305 scalbln NEW: ISO C 9x
1306 scalblnf NEW: ISO C 9x
1307 scalblnl NEW: ISO C 9x
1309 sendfile NEW: kernel
1310 setcontext NEW: Unix98
1311 setrlimit64 NEW: LFS
1312 setutxent NEW: Unix98
1314 sigignore NEW: Unix98
1315 sigqueue NEW: POSIX.1b
1316 sigrelse NEW: Unix98
1317 sigset NEW: POSIX.1b
1318 sigtimedwait NEW: POSIX.1b
1319 sigwaitinfo NEW: POSIX.1b
1320 sincos NEW: GNU ext.
1321 sincosf NEW: GNU ext.
1322 sincosl NEW: GNU ext.
1326 strcasestr NEW: GNU ext.
1327 strtoimax NEW: ISO C 9x
1328 strtoumax NEW: ISO C 9x
1329 strverscmp NEW: GNU ext.
1330 svcauthdes_stats NEW: Secure RPC
1331 svcunix_create NEW: sunrpc etx
1332 svcunixfd_create NEW: sunrpc ext
1333 swapcontext NEW: Unix98
1334 tcgetsid NEW: Unix98 PTY
1335 tdestroy NEW: GNU ext.
1336 tgamma NEW: ISO C 9x
1337 tgammaf NEW: ISO C 9x
1338 tgammal NEW: ISO C 9x
1342 truncf NEW: ISO C 9x
1343 truncl NEW: ISO C 9x
1345 unlockpt NEW: Unix98 PTY
1346 updwtmpx NEW: Unix98
1347 user2netname NEW: Secure RPC
1348 utmpxname NEW: Unix98
1349 versionsort NEW: GNU ext.
1350 versionsort64 NEW: GNU ext.
1352 wcscasecmp NEW: GNU ext.
1353 wcsncasecmp NEW: GNU ext.
1354 wcsnlen NEW: GNU ext.
1355 wcstoimax NEW: ISO C 9x
1356 wcstoll NEW: ISO C 9x
1357 wcstoull NEW: ISO C 9x
1358 wcstoumax NEW: ISO C 9x
1360 wordexp NEW: POSIX.2
1361 wordfree NEW: POSIX.2
1362 write_profiling REMOVED
1363 xdecrypt NEW: Secure RPC
1364 xdr_authdes_cred NEW: Secure RPC
1365 xdr_authdes_verf NEW: Secure RPC
1366 xdr_cryptkeyarg NEW: Secure RPC
1367 xdr_cryptkeyarg2 NEW: Secure RPC
1368 xdr_cryptkeyres NEW: Secure RPC
1369 xdr_getcredres NEW: Secure RPC
1370 xdr_key_netstarg NEW: Secure RPC
1371 xdr_key_netstres NEW: Secure RPC
1372 xdr_keybuf NEW: Secure RPC
1373 xdr_keystatus NEW: Secure RPC
1374 xdr_netnamestr NEW: Secure RPC
1375 xdr_sizeof NEW: Secure RPC
1376 xdr_unixcred NEW: sunrpc ext
1377 xencrypt NEW: Secure RPC
1378 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1389 * inet_ntoa is thread-safe
1391 * updwtmp is moved from libutil to libc
1393 * rewrite of cbrt function
1395 * update of timezone data
1409 * add atoll function
1411 * fix complex problems in Berkeley DB code
1413 * fix math functions
1417 * fixed lots of header problems (especially Linux/GNU specific)
1419 * dynamic loader preserves all registers
1421 * Roland McGrath provided support for handling of auxiliary objects in
1422 the ELF dynamic loader.
1424 * support for parallel builds is improved
1428 * GNU extensions are no longer declared by default. To enable them you
1429 must define the macro `_GNU_SOURCE' in your program or compile with
1432 * The library has changed from using GNU ld symbol aliases to using weak
1433 symbols where available. The ELF object file format supports weak
1434 symbols; GNU ld also supports weak symbols in the a.out format. (There
1435 is also now support for other GNU ld extensions in ELF. Use the
1436 `--with-elf' option to configure to indicate you have ELF, and
1437 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1438 of many files which contained only symbol aliases, reducing the size of
1439 the source and the compiled library; many other files were renamed to
1440 less cryptic names previously occupied by the symbol alias files.
1441 There is a new header file <elf.h> for programs which operate on
1442 files in the ELF format.
1444 * Converted to Autoconf version 2, so `configure' has more options.
1445 Run `configure --help' to see the details.
1447 * The library can now be configured to build profiling, highly-optimized
1448 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1449 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1450 `configure' enable building these extra libraries. The shared library is
1451 built by default when using both ELF and GNU ld. When shared libraries
1452 are enabled, the new library `-ldl' is available for arbitrary run-time
1453 loading of shared objects; its interface is defined in <dlfcn.h>. The
1454 new header file <link.h> gives access to the internals of the run-time
1455 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1456 application of same name on other systems and it provides information
1457 about dynamically linked binaries.
1459 * The C library now provides the run-time support code for profiling
1460 executables compiled with `-pg'. Programs can control the profiling code
1461 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1462 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1463 the support for this file format was contributed by David Mosberger-Tang.
1465 * The math code has been replaced with a math library based on fdlibm from
1466 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1467 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1468 functions. The math functions now reside in a separate library, so
1469 programs using them will need to use `-lm' their linking commands.
1471 * John C. Bowman contributed optimized ix87 assembler inline functions.
1473 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1474 mechanism similar to that found in Solaris 2. This is now used for the
1475 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1476 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1477 file controls what services are used for each individual database. This
1478 works by loading shared libraries with names specified in `nsswitch.conf',
1479 so service modules can be changed or added at any time without even
1480 relinking any program. Currently there are the file, db, and NIS based
1481 NSS services available.
1483 * The new functions `strtoq' and `strtouq' parse integer values from
1484 strings, like `strtol' and `strtoul', but they return `long long int' and
1485 `unsigned long long int' values, respectively (64-bit quantities).
1487 * The new functions `strtof' and `strtold' parse floating-point values from
1488 strings, like `strtod', but they return `float' and `long double' values,
1489 respectively (on some machines `double' and `long double' are the same).
1491 * Ulrich Drepper has contributed new implementations of the floating-point
1492 printing and reading code used in the `printf' family of functions and
1493 `strtod', `strtof', and `strtold'. These new functions are perfectly
1494 accurate, and much faster than the old ones.
1496 * The implementation of the POSIX locale model was completely rewritten by
1497 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1498 to compile the POSIX locale definition.
1500 * The former dummy implementations of the strcoll and strxfrm function are
1501 now replaced by fully functional code contributed by Ulrich Drepper. The
1502 collation information comes from the POSIX locale definitions.
1504 * The new header <langinfo.h> defines an interface for accessing
1505 various locale-dependent data (using the locale chosen with `setlocale').
1507 * Ulrich Drepper has contributed a new suite of functions for operation on
1508 wide-character and multibyte-character strings, in <wchar.h>;
1509 and classification and case conversion of wide characters, in <wctype.h>.
1510 These new functions are conforming to the ISO C, Amendement 1 specification.
1512 * There is now a second implementation of the standard I/O library available.
1513 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1514 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1516 * You can now use positional parameter specifications in format strings
1517 for the `printf' and `scanf' families of functions. For example,
1518 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1519 ``Number 6, Mr Jones''. This is mainly useful when providing different
1520 format strings for different languages, whose grammars may dictate
1521 different orderings of the values being printed. To support this
1522 feature, the interface for `register_printf_handler' has changed; see
1523 the header file <printf.h> for details.
1525 * The `printf' and `scanf' families of functions now understand a new
1526 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1527 to group numbers as indicated by the locale; for `scanf' and friends, this
1528 says to accept as valid only a number with all the proper grouping
1529 separators in the right places. In the default "C" locale, numbers are
1530 not grouped; but locales for specific countries will define the usual
1531 conventions (i.e. separate thousands with `,' in the US locale).
1533 * The pgrp functions have been regularized, slightly incompatibly but much
1534 less confusingly. The core functions are now `getpgid' and `setpgid',
1535 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1536 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1537 provided for compatibility. There is no longer an incompatible `getpgrp'
1538 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1540 * The new header file <fts.h> and suite of functions simplify programs that
1541 operate on directory trees. This code comes from 4.4 BSD.
1543 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1544 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1545 NSS scheme used in glibc.
1547 * There is a new malloc debugging hook `__memalign_hook'.
1549 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1550 `unsigned int' in <sys/types.h>. These are for compatibility only and
1551 their use is discouraged.
1553 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1554 done differently, so that it works even without GNU ld.
1556 * New function `euidaccess' checks allowed access to a file like `access',
1557 but using the effective IDs instead of the real IDs.
1559 * The time zone data files have been updated for the latest and greatest
1560 local time conventions of the countries of the world.
1562 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1565 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1566 for formatting floating-point numbers. They are provided only for
1567 compatibility; new programs should use `sprintf' instead. There are
1568 also equivalent function for the `long double' floating-point type and
1569 all functions also exist in a reentrant form.
1571 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1572 functions for maintaining the login-record files (primarily of use to
1573 system programs such as `login'), and convenient functions for
1574 allocating and initializing a pseudo-terminal (pty) device.
1576 * Ulrich Drepper has contributed new support for System V style
1577 shared memory and IPC on systems that support it.
1579 * Ulrich Drepper has contributed several miscellaneous new functions found
1580 in System V: The `hsearch' family of functions provide an effective
1581 implementation of hash tables; `a64l' and `l64a' provide a very simple
1582 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1585 * Ulrich Drepper has contributed new reentrant counterparts for the
1586 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1588 * Ulrich Drepper has contributed new, highly-optimized versions of several
1589 string functions for the i486/Pentium family of processors.
1591 * Ulrich Drepper has updated the Linux-specific code, based largely
1592 on work done in Hongjiu Lu's version of GNU libc for Linux.
1593 The GNU library now supports Linux versions 2.0.10 and later,
1594 using the ELF object file format (i[3456]86-*-linux).
1596 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1598 * David Mosberger-Tang and Richard Henderson have ported the C library
1599 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1600 dynamic linking support for ELF/Alpha.
1602 * Richard Henderson contributed several Alpha optimized assembler function
1603 for arithmetic and string handling.
1605 * Ulrich Drepper has contributed a new set of message catalog functions to
1606 support multiple languages using the <libintl.h> interface, for use with
1607 his new package GNU gettext. Translation volunteers have contributed
1608 catalogs of the library's messages in Spanish, German, and Korean.
1610 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1611 program and the `catgets' function for reading the catalog files it
1612 creates. (The <libintl.h> interface is preferred; we include the
1613 <nl_types.h> interface using `catgets' only for source compatibility with
1614 programs already written to use it.)
1616 * New header file <values.h> gives SVID-compatible names for <limits.h>
1619 * Various new macros, declarations, and small header files for compatibility
1622 * New function `group_member' is a convenient way to check if a process has
1623 a given effective group ID.
1625 * When using GCC 2.7 and later, the socket functions are now declared in a
1626 special way so that passing an argument of type `struct sockaddr_in *',
1627 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1628 `struct sockaddr *' type, does not generate a type-clash warning.
1630 * New function `error' declared in header file <error.h> is a convenient
1631 function for printing error messages and optionally exiting; this is the
1632 canonical function used in GNU programs. The new functions `err', `warn',
1633 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1634 doing the same thing.
1636 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1637 POSIX.2 `glob' function to do ~ and {...} expansion.
1639 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1640 `clearenv' which is used in POSIX.9 is also available.
1642 * New function `getsid' returns session ID number on systems that support it.
1644 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1645 files <db.h> and <mpool.h> provide a rich set of functions for several
1646 types of simple databases stored in memory and in files, and <ndbm.h> is
1647 an old `ndbm'-compatible interface using the `db' functions. Link with
1648 `-ldb' to get these functions.
1650 * New macro `strdupa' copies a string like `strdup', but uses local stack
1651 space from `alloca' instead of dynamic heap space from `malloc'.
1653 * New function `strnlen' is like `strlen' but searches only a given maximum
1654 number of characters for the null terminator. `stpncpy', `strndup' and
1655 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1658 * New function `statfs' in header <sys/statfs.h>.
1660 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1661 provide convenient functions for operating on blocks of null-terminated
1664 * A new suite of functions in <utmp.h> handle all the details of reading
1665 and writing the utmp file.
1667 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1670 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1671 completely POSIX compliant and also implemented the extended functionality
1672 to handle alternate digit representation and alternate era date formats.
1674 * Ulrich Drepper provided an implementation of the `strptime' function
1675 defined in XPG4.2 which transforms a string into a `struct tm' value.
1677 * Paul Eggert provided the tzselect shell script as part of the timezone
1678 code. The shell script makes it easy to select the correct timezone
1681 * The implementation of the malloc family of functions is completely replaced
1682 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1683 The implementation uses the mmap function (if available) and it is
1684 optimized for the use in multi threaded programs.
1686 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1687 functions. This new functionality is usable by specifying a special
1688 salt string and it is compatible with implementation on *BSD systems.
1690 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1691 `getsubopt' to handle second level command line options, `bsd_signal'
1692 to access BSD style `signal' functionality, the obsolete `regexp' style
1695 * the `lchown' function is available on system which support this
1698 * The implementation of the shadow password handling function was contributed
1701 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1703 * POSIX.1g support was added. The <sys/select.h> header is available,
1704 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1705 implementation of `getaddrinfo'.
1709 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1711 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1712 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1714 * The new function `daemon' from 4.4 BSD is useful for server programs that
1715 want to put themselves in the background.
1717 * Joel Sherrill has contributed support for several standalone boards that
1718 run without an operating system.
1720 * `printf', `scanf' and friends now accept a `q' type modifier for long
1721 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1723 * All of the code taken from BSD (notably most of the math and networking
1724 routines) has been updated from the BSD 4.4-Lite release.
1726 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1728 * The new functions `getdomainname' and `setdomainname' fetch or change the
1729 YP/NIS domain name. These are system calls which exist on systems which
1732 * The time zone data files have been updated for the latest international
1735 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1736 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1740 * The C library now includes support for Sun RPC, from Sun's free
1741 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1742 are included. (There is still no support for YP.)
1744 * Tom Quinn has contributed a port of the C library to SGI machines running
1745 Irix 4 (mips-sgi-irix4).
1747 * The new `lockf' function is a simplified interface to the locking
1748 facilities of `fcntl', included for compatibility.
1750 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1752 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1754 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1757 * The error message printed by `assert' for a failed assertion now includes
1758 the name of the program (if using GNU ld) and the name of the calling
1759 function (with versions of GCC that support this).
1761 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1763 * The library now includes the <sys/mman.h> header file and memory
1764 management functions `mmap', `munmap', `mprotect', `msync', and
1765 `madvise', on systems that support those facilities.
1767 * The interface for `mcheck' has changed slightly: the function called to
1768 abort the program when an allocation inconsistency is detected now takes
1769 an argument that indicates the type of failure. The new function
1770 `mprobe' lets you request a consistency check for a particular block at
1771 any time (checks are normally done only when you call `free' or `realloc'
1774 * It is now possible to easily cross-compile the C library, building on one
1775 system a library to run on another machine and/or operating system. All
1776 you need to do is set the variable `HOST_CC' in `configparms' to the
1777 native compiler for programs to run on the machine you are building on (a
1778 few generator programs are used on Unix systems); set `CC' to the
1781 * The new function `fexecve' (only implemented on the GNU system) executes
1782 a program file given a file descriptor already open on the file.
1786 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1787 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1789 * You can set the variable `libprefix' in `configparms' to specify a prefix
1790 to be prepended to installed library files; this makes it easy to install
1791 the GNU C library to be linked as `-lgnuc' or whatever.
1793 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1794 copies a limited number of characters from a string, and returns the
1795 address of the last character written.
1797 * You no longer need to check for whether the installed `stddef.h' is
1798 compatible with the GNU C library. configure now checks for you.
1800 * You can now define a per-stream `fileno' function to convert the
1801 stream's cookie into an integral file descriptor.
1803 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1804 allocates zero bytes of storage, and returns a unique pointer which
1805 you can pass to `realloc' or `free'. The behavior is undefined if
1806 you dereference this pointer.
1808 * The C library now runs on Sony NEWS m68k machines running either
1809 NewsOS 3 or NewsOS 4.
1811 * The new `syscall' function is a system-dependent primitive function
1812 for invoking system calls. It has the canonical behavior on Unix
1813 systems, including unreliable return values for some calls (such as
1814 `pipe', `fork' and `getppid').
1816 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1817 to `EAGAIN', which is the preferred name. On systems whose kernels
1818 use two distinct codes, the C library now translates EWOULDBLOCK to
1819 EAGAIN in every system call function.
1823 * The GNU C Library Reference Manual is now distributed with the library.
1824 `make dvi' will produce a DVI file of the printed manual.
1825 `make info' will produce Info files that you can read on line using C-h i
1826 in Emacs or the `info' program.
1827 Please send comments on the manual to bug-glibc-manual@gnu.org.
1829 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1831 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1833 * Jason Merrill has contributed a port to the Sequent Symmetry running
1834 Dynix version 3 (i386-sequent-dynix).
1836 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1837 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1839 * New function `memory_warnings' lets you arrange to get warnings when
1840 malloc is running out of memory to allocate, like Emacs gives you.
1842 * The C library now contains the relocating allocator used in Emacs 19 for
1843 its editing buffers. This allocator (ralloc) minimizes allocation
1844 overhead and fragmentation by moving allocated regions around whenever it
1845 needs to. You always refer to a ralloc'd region with a "handle" (a
1846 pointer to a pointer--an object of type `void **').
1848 * There is a new `printf' format: `%m' gives you the string corresponding
1849 to the error code in `errno'.
1851 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1852 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1853 pass, the `a' modifier says to fill in a `char **' you pass with a
1856 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1857 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1858 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1860 * `mkstemp' is a traditional Unix function to atomically create and open a
1861 uniquely-named temporary file.
1865 * The standard location for the file that says what the local timezone is
1866 has changed again. It is now `/usr/local/etc/localtime' (or more
1867 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1869 * The distribution no longer contains any files with names longer than 14
1872 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1873 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1875 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1879 * The configuration process has changed quite a bit. The `configure'
1880 script is now used just like the configuration scripts for other GNU
1881 packages. The `sysdeps' directory hierarchy is much rearranged.
1882 The file `INSTALL' explains the new scheme in detail.
1884 * The header files no longer need to be processed into ANSI C and
1885 traditional C versions. There is just one set of files to install, and
1886 it will work with ANSI or old C compilers (including `gcc -traditional').
1888 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1889 MIPS DECStation running Ultrix 4.
1891 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1892 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1893 made itself into a shared library.
1895 * Yet further improved support for the i386, running 4.3 BSD-like systems
1896 (such as Mach 3 with the Unix single-server), or System V.
1898 * New function `strncasecmp' to do case-insensitive string comparison
1899 with limited length.
1901 * New function `strsep' is a reentrant alternative to `strtok'.
1903 * New functions `scandir' and `alphasort' for searching directories.
1905 * New function `setenv' is a better interface to `putenv'.
1907 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1908 function for traversing a directory tree.
1910 * The GNU obstack package is now also part of the C library.
1911 The new function `open_obstack_stream' creates a stdio stream that
1912 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1913 formatted output directly to an obstack.
1915 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1916 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1918 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1920 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1921 things to your strings.
1923 * There are some new test programs: test-fseek, testmb, and testrand.
1925 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1926 These ports are not finished, but are a good starting place for really
1927 supporting those systems.
1929 * `/etc/localtime' is now the standard location for the file that says what
1930 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1931 This follows the general principle that `/etc' is the place for all local
1932 configuration files.
1934 * The C library header files now use `extern "C"' when used by the C++
1935 compiler, so the C library should now work with C++ code.
1937 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1938 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1941 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1942 function which uses the `merge sort' algorithm, and is said to be
1943 significantly faster than the old GNU `qsort' function. Merge sort is
1944 now the standard `qsort' function. The new algorithm can require a lot
1945 of temporary storage; so, the old sorting function is called when the
1946 required storage is not available.
1948 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1949 provides the Unix `crypt' function, plus some other entry points.
1951 * The code and header files taken from 4.4 BSD have been updated with the
1952 latest files released from Berkeley.
1954 ----------------------------------------------------------------------
1955 Copyright information:
1957 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
1959 Permission is granted to anyone to make or distribute verbatim copies
1960 of this document as received, in any medium, provided that the
1961 copyright notice and this permission notice are preserved,
1962 thus giving the recipient permission to redistribute in turn.
1964 Permission is granted to distribute modified versions
1965 of this document, or of portions of it,
1966 under the above conditions, provided also that they
1967 carry prominent notices stating who last changed them.
1970 version-control: never