1 GNU C Library NEWS -- history of user-visible changes. 2011-5-17
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, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11257, 11258,
13 11487, 11532, 11578, 11653, 11668, 11697, 11724, 11820, 11837, 11892,
14 11895, 11901, 11945, 11947, 11952, 11987, 12052, 12083, 12158, 12178,
15 12200, 12346, 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460,
16 12469, 12489, 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551,
17 12582, 12583, 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650,
18 12653, 12655, 12660, 12681, 12685, 12711, 12713, 12714, 12717, 12723,
19 12724, 12734, 12738, 12746, 12766
21 * The RPC implementation in libc is obsoleted. Old programs keep working
22 but new programs cannot be linked with the routines in libc anymore.
23 Programs in need of RPC functionality must be linked against TI-RPC.
24 The TI-RPC implemtation is IPv6 enabled and there are other benefits.
26 Visible changes of this change include (obviously) the inability to link
27 programs using RPC functions without referencing the TI-RPC library and the
28 removal of the RPC headers from the glibc headers.
29 Implemented by Ulrich Drepper.
31 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
34 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
35 yue_HK, lij_IT, mhr_RU
37 * New encodings: CP770, CP771, CP772, CP773, CP774
41 * The following bugs are resolved with this release:
43 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11611, 11640,
44 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979, 12005,
45 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113, 12140,
46 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348, 12378,
49 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
51 * POWER7 optimizations: memset, memcmp, strncmp
53 * New optimized string functions for x86-64: strnlen (SSE2),
54 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
55 Implemented by Ulrich Drepper.
59 * The following bugs are resolved with this release:
61 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
62 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
63 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
64 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
65 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
66 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
67 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
68 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
70 * New interfaces: pthread_getname_np, pthread_setname_np
72 * New Linux interface: recvmmsg
74 * STT_GNU_IFUNC implemented for Sparc by David Miller.
76 * The dynamic linker now recognizes supported ABI versions from the
77 EI_ABIVERSION field in the ELF header.
78 Implemented by Ulrich Drepper.
80 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
81 will not be used to fill in password fields in the passwd.byname replies.
82 Instead it is used to synthesize the shadow.byname table, should it be
83 missing. This is a useful mode in some installations involving Solaris.
84 Implemented by Ulrich Drepper.
86 * New locales: kok_IN, sq_MK, cv_RU
90 * The following bugs are resolved with this release:
92 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
93 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
94 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
95 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
96 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
97 10789, 10817, 10823, 10840, 10847
99 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
101 Implemented by Ulrich Drepper.
103 * Checking version of longjmp added that fails if an uninitialized stack
104 frame would be created. Implemented by Ulrich Drepper.
106 * STT_GNU_IFUNC is now supported in static executables.
107 Implemented by H.J. Lu.
109 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
111 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
112 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
113 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
114 Contributed by H.J. Lu.
116 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
117 Implemented by Ulrich Drepper.
119 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
121 Contributed by H.J. Lu.
123 * Support for fma instruction in AVX on x86-64.
124 Implemented by H.J. Lu and Ulrich Drepper.
126 * AVX support in x86-64 auditing support in ld.so.
127 Implemented by H.J. Lu.
129 * STB_GNU_UNIQUE support added.
130 Implemented by Ulrich Drepper.
132 * Implement second fallback mode for optimized DNS lookup for even more
133 broken environments. If two requests from the same port are not
134 handled correctly close the socket and open a new one before sending
135 the second request. The 'single-request-reopen' option in /etc/resolv.conf
136 can be used to select this mode right away, instead of rediscovering the
137 necessity is every process again.
138 Implemented by Ulrich Drepper.
140 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
141 Implemented by Adam Tkac.
143 * Optimized iconv conversions for S390x.
144 Implemented by Andreas Krebbel.
146 * Using condvars with PI mutexes is now more efficient due to kernel
147 support for requeueing to PI futexes. NPTL support added for x86-64.
148 Implemented by Ulrich Drepper.
150 * New locales: ps_AF, my_MM
154 * The following bugs are resolved with this release:
156 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
157 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
158 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
159 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
160 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
162 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
163 Implemented by Ulrich Drepper.
165 * New Linux interfaces: accept4, fallocate, fallocate64.
166 Implemented by Ulrich Drepper.
168 * Correct declarations of string function when used in C++ code. This
169 could lead to compile errors for invalid C++ code.
171 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
174 * New POSIX 2008 interface: psiginfo
175 Implemented by Ulrich Drepper.
177 * New ISO C++1x interfaces: quick_exit, at_quick_exit
178 Implemented by Ulrich Drepper.
180 * Support for selecting between multiple function definitions at runtime
181 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
183 * The libcrypt library can now use the hash function implementations in
184 NSS. Implemented by Ulrich Drepper.
186 * The malloc implementation can be compiled to be less memory efficient
187 but higher performing in multi-threaded programs.
188 Implemented by Ulrich Drepper.
190 * New locales: nan_TW@latin, ks_IN
192 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
193 Implemented by Ulrich Drepper.
195 * Extended printf hook support. It is possible to use user-defined types
196 and extend existing format specifiers.
197 Implemented by Ulrich Drepper.
199 * Handling for group shadow files has been added.
200 Implemented by Ulrich Drepper.
202 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
203 servers (the case, e.g., for some people using the built-in DNS
204 server in ADSL modems/routers). There is a once-per-process timeout
205 in case of a broken server. To avoid it, users can run nscd or put
206 'options single-request' in /etc/resolv.conf.
207 Implemented by Ulrich Drepper.
211 * The following bugs are resolved with this release:
213 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
214 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
215 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
216 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
217 6968, 6974, 6980, 6995, 7008, 7009, 7029
219 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
220 up at the same time. Implemented by Ulrich Drepper.
222 * TLS descriptors for LD and GD on x86 and x86-64.
223 Implemented by Alexandre Oliva.
225 * getaddrinfo now handles DCCP and UDPlite.
226 Implemented by Ulrich Drepper.
228 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
229 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
230 Implemented by Ulrich Drepper.
232 * New implementation of memmem, strstr, and strcasestr which is O(n).
233 Implemented by Eric Blake.
235 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
237 * Implement "e" option for popen to open file descriptor with the
238 close-on-exec flag set. Implemented by Ulrich Drepper.
240 * Implement "b" mode for fmemopen. In this mode writes writes don't
241 implicitly add a NUL byte and seeks from the end of the buffer really
242 use the buffer end, not the string length as the basis.
243 Implemented by Ulrich Drepper.
245 * Many functions, exported and internal, now atomically set the close-on-exec
246 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
248 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
250 Implemented by Pravin Satpute.
252 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
256 * The following bugs are resolved with this release:
258 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
259 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
260 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
261 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
262 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
263 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
264 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
266 * New locales: bo_CN, bo_IN, shs_CA.
268 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
270 * Sorting rules for some Indian languages (Devanagari and Gujarati).
271 Implemented by Pravin Satpute.
273 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
275 * nscd caches now all timeouts for DNS entries
276 Implemented by Ulrich Drepper.
278 * nscd is more efficient and wakes up less often.
279 Implemented by Ulrich Drepper.
281 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
282 vdprintf, and obstack_vprintf.
283 Implemented by Jakub Jelinek.
285 * Faster memset for x86-64.
286 Implemented by Harsha Jagasia and H.J. Lu.
288 * Faster memcpy on x86.
289 Implemented by Ulrich Drepper.
291 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
292 Implemented by Ulrich Drepper.
294 * Faster sqrt and sqrtf implemention for some PPC variants.
295 Implemented by Stephen Munroe.
299 * The following bugs are resolved with this release:
301 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
302 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
303 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
304 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
305 5071, 5103, 5104, 5112, 5113, 5184, 5186
307 * More checking functions: fread, fread_unlocked, open*, mq_open.
308 Implemented by Jakub Jelinek and Ulrich Drepper.
310 * Extend fortification to C++. Implemented by Jakub Jelinek.
312 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
313 by not recognizing 'a' as a modifier when those specs are requested.
314 Implemented by Jakub Jelinek.
316 * PPC optimizations to math and string functions.
317 Implemented by Steven Munroe.
319 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
320 options to be passed. Implemented by Ulrich Drepper.
322 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
324 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
325 Implemented by Ulrich Drepper.
327 * Handle private futexes in the NPTL implementation.
328 Implemented by Jakub Jelinek and Ulrich Drepper.
330 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
331 Implemented by Roland McGrath and Ulrich Drepper.
333 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
335 * SHA-256 and SHA-512 based password encryption.
336 Implemented by Ulrich Drepper.
338 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
339 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
342 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
343 Implemented by Ulrich Drepper.
347 * The following bugs are resolved with this release:
349 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
350 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
351 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
352 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
353 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
354 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
355 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
358 * New Linux interfaces: epoll_pwait, sched_getcpu.
360 * New generic interfaces: strerror_l.
362 * nscd can now cache the services database. Implemented by Ulrich Drepper.
366 * The following bugs are resolved with this release:
368 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
369 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
370 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
371 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
372 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
373 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
374 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
375 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
376 3225, 3251, 3252, 3253, 3273
378 * For Linux, the sorting of addresses returned by getaddrinfo now also
379 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
380 Implemented by Ulrich Drepper.
382 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
383 Implemented by Ulrich Drepper.
385 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
387 * New iconv module for MIK. Contributed by Alexander Shopov.
389 * For sites with broken group and/or passwd database, the auto-propagate
390 option of nscd can prevent creating ID lookup entries from the results
391 of a name lookup and vice versa. This usually is no problem but some
392 site might have problems with the default behavior.
393 Implemented by Ulrich Drepper.
395 * Iterating over entire database in NIS can be slow. With the
396 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
397 to trade time for memory. The entire database will be read at once.
398 Implemented by Ulrich Drepper.
400 * The interfaces introduced in RFC 3542 have been implemented by
403 * Support for the new ELF hash table format was added by Ulrich Drepper.
405 * Support for priority inheritance mutexes added by Jakub Jelinek and
408 * Support for priority protected mutexes added by Jakub Jelinek.
410 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
411 or_IN, csb_PL, fy_NL, sr_ME.
415 * More overflow detection functions.
417 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
418 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
420 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
421 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
422 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
423 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
424 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
425 by Masahide Washizawa.
427 * It is now possible to install audit libraries for the dynamic linker using
428 LD_AUDIT. Implemented by Ulrich Drepper.
430 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
431 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
432 For a libc and libpthread that works well on Linux 2.4 kernels, we
433 recommend using the stable 2.3 branch.
435 * The new function open_wmemstream acts like open_memstream,
436 but uses a wchar_t wide character buffer.
438 * The new function ppoll is an improved version of poll, similar to pselect.
440 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
441 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
442 renameat, unlinkat, linkat, symlinkat, readlinkat.
444 * New Linux kernel system calls: unshare,
445 inotify_init, inotify_add_watch, inotify_rm_watch.
447 * The euidaccess function is now also known by the alias eaccess,
448 for compatibility with some other systems.
450 * Timezone data updated to 2006b version.
454 * The following bugs are resolved with this release:
456 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
457 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
458 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
459 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
460 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
461 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
463 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
465 * As of this release, GCC 4 can be used to compile the C Library.
467 * Timezone data updated to 2005m version.
471 * The following bugs are resolved with this release:
473 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
474 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
475 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
476 777, 787, 821, 822, 823, 825
478 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
482 * Support for RFC 3678. Real implementations exist only for Linux so far.
483 Implemented by Ulrich Drepper.
485 * nscd can now cache entries persistently. Expiring entries are reloaded.
486 For speedups the cache can be shared in memory with client processes.
487 Implemented by Ulrich Drepper.
489 * nscd can now perform SELinux checks.
490 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
492 * getaddrinfo queries are now cached. Canonical name lookup is performed
494 Implemented by Ulrich Drepper.
496 * The nothrow function attribute is used when headers are used by gcc when
497 compiling C code. This can avoid significant amounts of exception
500 * The malloc functions perform more error checking and are stricter when
501 it comes to reacting on errors. The default action is to terminate
502 the process after showing an error message. Implemented by Ulrich Drepper.
504 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
505 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
507 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
508 namespaces using the new function dlmopen(). This feature is of course,
509 like most other dynamic loading functionality, not available in statically
510 linked applications. Implemented by Ulrich Drepper.
512 * Low-overhead boundary checking variants of string and some stdio functions
513 were added. These are to be used in conjunction with a gcc patch by
514 Jakub Jelinek which adds calls to these functions if possible.
515 Implemented by Jakub Jelinek and Ulrich Drepper.
517 * Old code for several operating systems and machine architectures that
518 have not been in working condition in a long time have been removed from
519 the main source tree maintained by the GNU C Library's maintainers.
520 These files are now reside in the separate `ports' source module
521 that is usable as an add-on when building the library.
525 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
526 interrogate the dynamic linker, compatible with the Solaris interface.
528 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
529 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
531 * getifaddrs now uses the netlink interface on Linux to get its information.
532 Implemented by Thorsten Kukuk.
534 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
535 Implemented by Ulrich Drepper.
537 * support for non-executable stacks on x86 has been added. Changes mostly
540 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
543 * getaddrinfo now performs destination address selection according to
548 * Thread-safe interfaces for many functions that access locale data
549 were added in version 2.3, but these features were omitted from NEWS.
550 Many functions have variants with an `_l' suffix that take a `locale_t'
551 object as a parameter rather than consulting the current locale.
552 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
553 create and maintain `locale_t' objects. Additionally, the new function
554 `uselocale' sets "the current locale" (as used by functions not so
555 parameterized) set for an individual thread. These features were added
556 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
558 * The functions getresuid, getresgid, setresuid, and setresgid, which
559 have long been available on Linux, are now declared in <unistd.h>
560 and are now also available on the Hurd.
562 * ELF thread-local storage support (TLS) now works on x86-64.
564 * The new dynamic string token $LIB is expanded in shared library names.
565 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
567 * Aldy Hernandez contributed complete software floating point support for
568 PowerPC machines with no FPU.
570 * fexecve is implemented on Linux.
572 * The `btowc' function should work at least twice as fast due to
573 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
575 * With approriate thread add-ons cancelable functions are now implemented
576 in libc.so as well. No need to call the function in libpthread. This
577 change allowed to finally disable the incorrect and expensive handling
578 of weak definition in ld.so.
580 * Yet more PLT entries in libc.so have been removed. We finally arrived
581 at the bare minimum. Startup times improved appropriately.
583 * Support for the new Linux/x86 system call interface was added. The
584 AT_SYSINFO auxiliary vector entry is recognized and handled.
588 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
591 * iconv (the program and the interface) now accepts empty names (excluding
592 options like //TRANSLIT) to mean "use charset of current locale".
594 * localedef can now transliterate characters in strings which are not in
595 the provided charmap. The information from the input locale is used.
597 * Prelinking support was added for ELF targets. This requires additional
598 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
600 * Read-only stdio streams now use mmap to speed up operation by eliminating
601 copying and buffer underflows. To use add 'm' to the mode string of
602 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
604 * The malloc functions were completely rewritten by Wolfram Gloger based
605 on Doug Lea's malloc-2.7.0.c.
607 * Isamu Hasegawa contributed a completely new and POSIX-conformant
608 implementation of regex.
610 * Bruno Haible upgraded the iconv and locale implementation to support
613 * Contents of the LC_* and LANG environment variables in the CEN style are
614 not recognized anymore. It never was used. Change by Ulrich Drepper.
616 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
617 thread-local storage (TLS) ABI on some platforms.
618 Changes by Ulrich Drepper. SH support by Kaz Kojima.
620 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
621 EUC-JISX0213, and TSCII.
623 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
624 BSD-compatible interface for getting all network interface addresses.
625 Implementation for IPv4 by Roland McGrath.
627 * Loading of locale data is faster due to the introduction of a locale
628 archive. Implemented by Roland McGrath and Ulrich Drepper.
630 * Startup times are significantly reduced by not using exported functions
631 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
634 * Steven Munroe contributed a port to PowerPC64/Linux.
638 * The Hurd now uses the GNU libio implementation of stdio rather than the
639 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
641 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
642 with the same behavior as the Linux system call of the same name.
646 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
647 128-bit long double format.
649 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
650 IBM1161, and IBM1162 charsets.
652 * Andreas Jaeger contributed a port to x86-64/Linux.
654 * Peter Bruin contributed a port to PowerPC/Hurd.
656 * libc functions using I/O streams now can handle wide-oriented streams
659 * optimizations in the dynamic linker. Binaries created by recent binutils
660 versions start up quicker due to reduced time spent on relocations.
662 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
666 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
667 asinh, atanh, j0 for the 128-bit long double format.
669 * Bruno Haible updated all the code handling Unicode in some form to
672 * Speed of regex for single-byte locales is back to previous levels.
673 Patch by Isamu Hasegawa.
675 * Alpha, SPARC, and IA-64 now also using floating stacks.
677 * Startup time of internationalized applications greatly improved through
678 iconv cache. Use iconvconfig to generate the cache file.
679 Contributed by Ulrich Drepper.
681 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
682 severe performance problems. Patch by David Mosberger.
684 * The Hurd port got a lot more functionality like AIO, various stdio
685 extensions, etc. Mainly done by Roland McGrath.
687 * mtrace can now lookup symbols in shared libraries.
691 * Intel's IA-64 math library is largely integrated. It provides fast and
692 accurate implementatations for most basic and standard math functions
693 in float, double, and long double format.
695 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
696 and asin for the 96-bit long double format and asin, log, tan for the
697 128-bit long double format.
699 * The beginning of a last-bit accurate math library by IBM Haifa were added.
700 The basic double functions exist today. Contributed by Abraham Ziv
701 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
702 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
704 * An asynchronous name lookup library was added. The interface is designed
705 after POSIX AIO. The proposal was circulated beforehand to get comments.
706 No negative ones came in. Implemented by Ulrich Drepper.
708 * Port to S390/64bit contributed by Martin Schwidefsky
709 <schwidefsky@de.ibm.com>.
711 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
712 of functions for Linux/IA-64.
714 * The RPC code is now thread safe. Threads can now use the same service
715 of different services at the same time. Patch by Eric Norum
716 <eric.norum@usask.ca> with some help by Ulrich Drepper.
718 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
719 family of functions for Linux/S390.
721 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
722 of functions for Linux/x86.
724 * Port to Linux/CRIS contributed by Axis Communications.
728 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
729 we can now check for namespace violations and missing declarations. The
730 result is that almost all headers are now Unix-compliant (as defined in
731 the upcoming XPG6). The negative side is that some programs might need
732 corrections, too, if they depend on the incorrect form of the headers in
733 previous versions which defined too many symbols and included too many
736 * regex now handles multibyte character sets correctly.
737 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
739 * iconv (the program) does now conform to the upcoming XPG6 and handles
740 charmaps. Instead of the charset names the path of charmaps can be
741 provided and the conversion happens based on this data.
742 Contributed by Ulrich Drepper.
744 * The locale program now provides detailed information about the installed
749 only lists the names of the supported locales
753 provides details such as country, language, and codeset name.
754 Contributed by Ulrich Drepper.
758 * The gencat program now parses the input file according to the charset
759 selected by the LC_CTYPE category. This is important for stateful
760 character sets. To make generating catalogs easier there is a way
761 to overwrite the charset selected by the locale: before the first
762 message or $ quote line the catalog can contain a line like
766 to select the charset (ISO-8859-2 in this case).
768 Implemented by Shinya Hanataka and Ulrich Drepper.
770 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
771 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
772 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
774 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
775 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
777 * The LANGUAGE environment variable is now ignored unless the locale is
778 changed from the default "C" locale.
780 * The usual bug fixes.
784 * Greg McGary added runtime support for bounds checking using gcc's
785 new -fbounded-pointers option. ix86 target is complete. PowerPC
788 * Thorsten Kukuk added secure mode support to nscd.
790 * The Berkeley db libraries have been removed.
792 Related, the nss_db module is now in a separate package since it
793 obviously requires a database library being available.
795 * Wide character I/O streams implemented by Ulrich Drepper.
797 * Functions from the extended socket API added by Ulrich Drepper.
799 * Functions feenableexcept and fedisableexcept to control the
800 behaviour of individual exceptions have been added by Andreas Jaeger.
802 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
804 * The resolver code has been updated from bind 8.2.3-T5B which supports
805 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
808 This change could in some situations effect backward compatibility. Since
809 now `_res' is a thread-local instead of a global variable, modifying it
810 in one thread does not have any effect in other threads.
812 The resolver library was also extended to allow IPv6 as the transport
813 protocol for the requests. This work was done by Stig Venaas.
815 * Compatibility code for K&R C compilers has been removed from the
816 header files. A ISO C compiler is needed to use the library
817 (conforming to either C89 or C99 standard).
819 * Complete rewrite of the localedef program to support multibyte character
820 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
821 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
822 Implemented by Ulrich Drepper.
824 Bruno Haible significantly improved the generation and use of the data
825 structures for the wide character tables.
827 * Plural handling in gettext implemented by Ulrich Drepper.
829 * The utmp daemon has been removed.
831 * The port to MIPS-Linux has been finished by Andreas Jaeger.
833 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
836 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
838 * POSIX barriers implemented by Kaz Kylheku.
840 * POSIX spawn function family implemented by Ulrich Drepper.
842 * POSIX spinlocks are now available.
844 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
846 * the configure option --enable-kernel=X.Y.Z allows to strip out
847 compatibility for kernel versions before X.Y.Z. This is currently only
848 implemented for Linux.
850 * the sockaddr_in6 structure changed. The IPv6 working group added a new
851 field sin6_scope_id. This means that all programs using IPv6 should be
852 recompiled. Don't expect binary compatibility with previous glibc
855 * various conversion modules for IBM character sets contributed by
858 * IA-64 port by Jes Sorensen and HJ Lu.
860 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
861 Compiling the GNU C Library for Linux/ia64
862 ******************************************
864 Please refer to the file INSTALL in the same directory as you found
865 this file for general information about configuring and compiling
868 For general inquiries about glibc under Linux/ia64 please use the
869 following mailing list linux-ia64@linuxia64.org or one of the relevant
872 Recommended Tools for Compilation
873 =================================
875 In order for glibc-2.2 to build correctly on the ia64 you need at
876 least the following versions of the GNU tools (the :
878 * The Cygnus toolchain snapshot for the ia64 as of August 4
879 including the provided set of patches. It is however recommend
880 you use the October 24 toolchain snapshot or a more recent version.
882 OR alternatively you can try the following (the Cygnus toolchain is
883 the recommended solution):
885 * GCC and binutils, GAS and GNU LD out of CVS from
886 sources.redhat.com as of August 28, 2000 or later. The CVS tree
887 may require special patches to work properly on the ia64.
889 Configuring and compiling GNU Libc for Linux/ia64
890 =================================================
892 The library requires Linux kernel version 2.4.0-test4-000728 or
893 later to funtion properly. Besides that it support for debug libraries
894 is currently untested. Hence the following options
895 are required for configuring the library:
897 --disable-debug --enable-kernel=2.4.0
899 It is also important that you make sure the library picks up the
900 appropriate kernel header files, if you do not have recent enough
901 kernel headers in /usr/src/linux/include, you should use the
902 --with-headers=<path> option to specify the location.
904 As an example I personally use the following options to configure
909 --enable-kernel=2.4.0
913 --with-headers=/home/jes/linux/include
918 Jes Sorensen <jes@linuxcare.com>,
920 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
934 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
936 * New xdr functions are added; some rpc functions are now 64bit clean.
938 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
940 * Fixed known incompatibilities with glibc 2.0.
942 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
944 * Optimized a number of functions (especially the ELF dynamic loader).
946 * Update timezone data files.
948 * lots of charmaps corrections
950 * some new locale definitions and charmaps
955 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
956 conform to POSIX member type requirements. Symbol versions have been
957 adjusted as needed within the library, and for direct use by applications,
958 but there is potential for problems if third-party libraries use
959 struct timeval as part of their interface. This does not present
960 a problem for X and other "essential" system libraries.
962 * An additional locale model to support C++ Standard Library locale
963 model and probably more was implemented by Ulrich Drepper.
965 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
968 * Miles Bader provided the `argp' function family to support hierachical
969 command line argument parsing, layered on top of getopt.
971 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
973 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
976 * scanf recognizes the %a and %A format for scanning floating point numbers.
978 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
979 information and interfaces for the available integer types.
981 * about 130 new math functions were added to implement the ISO C9x math
984 * the new header <complex.h> contains definitions of the complex math
985 functions from ISO C 9X.
987 * the new header <tgmath.h> defines generic macros to use complex or
988 real valued functions.
990 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
992 * Andreas Jaeger provided a test suite for the math library.
994 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
996 * Ulrich Drepper added character set conversion functions (iconv).
998 * Optimized string functions have been added.
1000 * The localedata addon is now part of glibc.
1002 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1004 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1005 daemon for NSS (nscd).
1007 Missing a better place here are some numbers on improvements. Under
1008 Linux 2.1.125 un-tar-ing the kernel sources takes
1012 using local files 12.19s 6.88s 22.91s
1014 using NIS 13.92s 8.91s 26.34s
1016 using NIS & nscd 10.37s 7.34s 25.30s
1018 using NIS+ 27.57s 30.37s 640.46s
1020 using NIS+ & nscd 10.25s 7.83s 26.51s
1022 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1024 Keep in mind that non-namelookup related operations dominate above times.
1025 It was just a common complain that using NIS+ unpacking the kernel is
1028 [1] The old nscd implementation is not available anymore since it was
1029 distributed with glibc up to version 2.0.98 and thus is now replaced.
1031 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1033 * Mark Kettenis provided a Hesiod NSS module.
1035 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1036 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1038 * rcmd can now handle netgroups (Dick Streefland).
1040 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1043 * Support for the IPv6 protocol has been added to the socket API, as per the
1044 latest draft standards.
1046 * Support for Linux 2.2 has been added.
1048 * Interface changes relative to the latest 2.0.x release:
1049 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1050 addseverity NEW: Unix98
1051 alphasort64 NEW: LFS
1052 argp_err_exit_status NEW: argp, GNU ext
1053 argp_error NEW: argp, GNU ext
1054 argp_failure NEW: argp, GNU ext
1055 argp_help NEW: argp, GNU ext
1056 argp_parse NEW: argp, GNU ext
1057 argp_program_bug_address NEW: argp, GNU ext
1058 argp_program_version NEW: argp, GNU ext
1059 argp_program_version_hook NEW: argp, GNU ext
1060 argp_state_help NEW: argp, GNU ext
1061 argp_usage NEW: argp, GNU ext
1062 authdes_create NEW: Secure RPC
1063 authdes_getucred NEW: Secure RPC
1064 authdes_pk_create NEW: Secure RPC
1065 backtrace NEW: GNU ext.
1066 backtrace_symbols NEW: GNU ext.
1067 backtrace_symbols_fd NEW: GNU ext.
1069 cacosf NEW: ISO C 9x
1070 cacosh NEW: ISO C 9x
1071 cacoshf NEW: ISO C 9x
1072 cacoshl NEW: ISO C 9x
1073 cacosl NEW: ISO C 9x
1080 casinf NEW: ISO C 9x
1081 casinh NEW: ISO C 9x
1082 casinhf NEW: ISO C 9x
1083 casinhl NEW: ISO C 9x
1084 casinl NEW: ISO C 9x
1086 catanf NEW: ISO C 9x
1087 catanh NEW: ISO C 9x
1088 catanhf NEW: ISO C 9x
1089 catanhl NEW: ISO C 9x
1090 catanl NEW: ISO C 9x
1091 cbc_crypt NEW: Secure RPC
1095 ccoshf NEW: ISO C 9x
1096 ccoshl NEW: ISO C 9x
1102 cimagf NEW: ISO C 9x
1103 cimagl NEW: ISO C 9x
1104 clearerr_locked REMOVED
1105 clntunix_create NEW: sunrpc ext
1107 clog10 NEW: ISO C 9x
1108 clog10f NEW: ISO C 9x
1109 clog10l NEW: ISO C 9x
1119 cprojf NEW: ISO C 9x
1120 cprojl NEW: ISO C 9x
1122 crealf NEW: ISO C 9x
1123 creall NEW: ISO C 9x
1128 csinhf NEW: ISO C 9x
1129 csinhl NEW: ISO C 9x
1132 csqrtf NEW: ISO C 9x
1133 csqrtl NEW: ISO C 9x
1137 ctanhf NEW: ISO C 9x
1138 ctanhl NEW: ISO C 9x
1140 des_setparity NEW: Secure RPC
1141 ecb_crypt NEW: Secure RPC
1142 endutxent NEW: Unix98
1144 exp10f NEW: ISO C 9x
1145 exp10l NEW: ISO C 9x
1149 fattach NEW: STREAMS
1150 fdetach NEW: STREAMS
1154 feclearexcept NEW: ISO C 9x
1155 fegetenv NEW: ISO C 9x
1156 fegetexceptflag NEW: ISO C 9x
1157 fegetround NEW: ISO C 9x
1158 feholdexcept NEW: ISO C 9x
1160 feraiseexcept NEW: ISO C 9x
1161 ferror_locked REMOVED
1162 fesetenv NEW: ISO C 9x
1163 fesetexceptflag NEW: ISO C 9x
1164 fesetround NEW: ISO C 9x
1165 fetestexcept NEW: ISO C 9x
1166 feupdateenv NEW: ISO C 9x
1167 fflush_locked REMOVED
1171 fgets_unlocked NEW: GNU ext.
1172 fileno_locked REMOVED
1184 fputc_locked REMOVED
1185 fputs_unlocked NEW: GNU ext.
1186 fread_unlocked NEW: GNU ext.
1191 fstatvfs NEW: Unix98
1195 ftruncate64 NEW: LFS
1197 fwrite_unlocked NEW: GNU ext.
1198 gai_strerror NEW: IPv6
1202 getchar_locked REMOVED
1204 getdate_err NEW: Unix98
1205 getdate_r NEW: GNU ext.
1207 getnameinfo NEW: IPv6
1208 getnetname NEW: Secure RPC
1209 getpmsg NEW: STREAMS
1210 getpt NEW: Unix98 PTY
1211 getrlimit64 NEW: LFS
1212 getutxent NEW: Unix98
1213 getutxid NEW: Unix98
1214 getutxline NEW: Unix98
1215 glob64 NEW: GNU ext.
1216 globfree64 NEW: GNU ext.
1217 gnu_get_libc_release NEW: GNU ext.
1218 gnu_get_libc_version NEW: GNU ext.
1219 grantpt NEW: Unix98 PTY
1220 host2netname NEW: Secure RPC
1222 iconv_close NEW: iconv
1223 iconv_open NEW: iconv
1224 if_freenameindex NEW: IPv6
1225 if_indextoname NEW: IPv6
1226 if_nameindex NEW: IPv6
1227 if_nametoindex NEW: IPv6
1228 in6addr_any NEW: IPv6
1229 in6addr_loopback NEW: IPv6
1230 inet6_isipv4mapped NEW: IPv6
1231 isastream NEW: STREAMS
1232 iswblank NEW: GNU ext.
1233 key_decryptsession NEW: Secure RPC
1234 key_decryptsession_pk NEW: Secure RPC
1235 key_encryptsession NEW: Secure RPC
1236 key_encryptsession_pk NEW: Secure RPC
1237 key_gendes NEW: Secure RPC
1238 key_get_conv NEW: Secure RPC
1239 key_secretkey_is_set NEW: Secure RPC
1240 key_setnet NEW: Secure RPC
1241 key_setsecret NEW: Secure RPC
1242 llrint NEW: ISO C 9x
1243 llrintf NEW: ISO C 9x
1244 llrintl NEW: ISO C 9x
1245 llround NEW: ISO C 9x
1246 llroundf NEW: ISO C 9x
1247 llroundl NEW: ISO C 9x
1252 lrintf NEW: ISO C 9x
1253 lrintl NEW: ISO C 9x
1254 lround NEW: ISO C 9x
1255 lroundf NEW: ISO C 9x
1256 lroundl NEW: ISO C 9x
1258 makecontext NEW: Unix98
1259 mempcpy NEW: GNU ext.
1262 modify_ldt NEW: kernel
1266 nearbyint NEW: ISO C 9x
1267 nearbyintf NEW: ISO C 9x
1268 nearbyintl NEW: ISO C 9x
1269 netname2host NEW: Secure RPC
1270 netname2user NEW: Secure RPC
1271 nexttoward NEW: ISO C 9x
1272 nexttowardf NEW: ISO C 9x
1273 nexttowardl NEW: ISO C 9x
1277 passwd2des NEW: Secure RPC
1279 pow10f NEW: GNU ext.
1280 pow10l NEW: GNU ext.
1283 printf_size NEW: GNU ext.
1284 printf_size_info NEW: GNU ext.
1285 profil_counter REMOVED
1286 pthread_mutexattr_getkind_np REPLACED
1287 pthread_mutexattr_setkind_np REPLACED
1288 ptsname NEW: Unix98 PTY
1289 ptsname_r NEW: Unix98 PTY
1291 putchar_locked REMOVED
1292 putgrent NEW: GNU ext.
1294 putpmsg NEW: STREAMS
1295 pututxline NEW: Unix98
1299 readdir64_r NEW: LFS
1300 remquo NEW: ISO C 9x
1301 remquof NEW: ISO C 9x
1302 remquol NEW: ISO C 9x
1304 roundf NEW: ISO C 9x
1305 roundl NEW: ISO C 9x
1307 scalbln NEW: ISO C 9x
1308 scalblnf NEW: ISO C 9x
1309 scalblnl NEW: ISO C 9x
1311 sendfile NEW: kernel
1312 setcontext NEW: Unix98
1313 setrlimit64 NEW: LFS
1314 setutxent NEW: Unix98
1316 sigignore NEW: Unix98
1317 sigqueue NEW: POSIX.1b
1318 sigrelse NEW: Unix98
1319 sigset NEW: POSIX.1b
1320 sigtimedwait NEW: POSIX.1b
1321 sigwaitinfo NEW: POSIX.1b
1322 sincos NEW: GNU ext.
1323 sincosf NEW: GNU ext.
1324 sincosl NEW: GNU ext.
1328 strcasestr NEW: GNU ext.
1329 strtoimax NEW: ISO C 9x
1330 strtoumax NEW: ISO C 9x
1331 strverscmp NEW: GNU ext.
1332 svcauthdes_stats NEW: Secure RPC
1333 svcunix_create NEW: sunrpc etx
1334 svcunixfd_create NEW: sunrpc ext
1335 swapcontext NEW: Unix98
1336 tcgetsid NEW: Unix98 PTY
1337 tdestroy NEW: GNU ext.
1338 tgamma NEW: ISO C 9x
1339 tgammaf NEW: ISO C 9x
1340 tgammal NEW: ISO C 9x
1344 truncf NEW: ISO C 9x
1345 truncl NEW: ISO C 9x
1347 unlockpt NEW: Unix98 PTY
1348 updwtmpx NEW: Unix98
1349 user2netname NEW: Secure RPC
1350 utmpxname NEW: Unix98
1351 versionsort NEW: GNU ext.
1352 versionsort64 NEW: GNU ext.
1354 wcscasecmp NEW: GNU ext.
1355 wcsncasecmp NEW: GNU ext.
1356 wcsnlen NEW: GNU ext.
1357 wcstoimax NEW: ISO C 9x
1358 wcstoll NEW: ISO C 9x
1359 wcstoull NEW: ISO C 9x
1360 wcstoumax NEW: ISO C 9x
1362 wordexp NEW: POSIX.2
1363 wordfree NEW: POSIX.2
1364 write_profiling REMOVED
1365 xdecrypt NEW: Secure RPC
1366 xdr_authdes_cred NEW: Secure RPC
1367 xdr_authdes_verf NEW: Secure RPC
1368 xdr_cryptkeyarg NEW: Secure RPC
1369 xdr_cryptkeyarg2 NEW: Secure RPC
1370 xdr_cryptkeyres NEW: Secure RPC
1371 xdr_getcredres NEW: Secure RPC
1372 xdr_key_netstarg NEW: Secure RPC
1373 xdr_key_netstres NEW: Secure RPC
1374 xdr_keybuf NEW: Secure RPC
1375 xdr_keystatus NEW: Secure RPC
1376 xdr_netnamestr NEW: Secure RPC
1377 xdr_sizeof NEW: Secure RPC
1378 xdr_unixcred NEW: sunrpc ext
1379 xencrypt NEW: Secure RPC
1380 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1391 * inet_ntoa is thread-safe
1393 * updwtmp is moved from libutil to libc
1395 * rewrite of cbrt function
1397 * update of timezone data
1411 * add atoll function
1413 * fix complex problems in Berkeley DB code
1415 * fix math functions
1419 * fixed lots of header problems (especially Linux/GNU specific)
1421 * dynamic loader preserves all registers
1423 * Roland McGrath provided support for handling of auxiliary objects in
1424 the ELF dynamic loader.
1426 * support for parallel builds is improved
1430 * GNU extensions are no longer declared by default. To enable them you
1431 must define the macro `_GNU_SOURCE' in your program or compile with
1434 * The library has changed from using GNU ld symbol aliases to using weak
1435 symbols where available. The ELF object file format supports weak
1436 symbols; GNU ld also supports weak symbols in the a.out format. (There
1437 is also now support for other GNU ld extensions in ELF. Use the
1438 `--with-elf' option to configure to indicate you have ELF, and
1439 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1440 of many files which contained only symbol aliases, reducing the size of
1441 the source and the compiled library; many other files were renamed to
1442 less cryptic names previously occupied by the symbol alias files.
1443 There is a new header file <elf.h> for programs which operate on
1444 files in the ELF format.
1446 * Converted to Autoconf version 2, so `configure' has more options.
1447 Run `configure --help' to see the details.
1449 * The library can now be configured to build profiling, highly-optimized
1450 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1451 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1452 `configure' enable building these extra libraries. The shared library is
1453 built by default when using both ELF and GNU ld. When shared libraries
1454 are enabled, the new library `-ldl' is available for arbitrary run-time
1455 loading of shared objects; its interface is defined in <dlfcn.h>. The
1456 new header file <link.h> gives access to the internals of the run-time
1457 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1458 application of same name on other systems and it provides information
1459 about dynamically linked binaries.
1461 * The C library now provides the run-time support code for profiling
1462 executables compiled with `-pg'. Programs can control the profiling code
1463 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1464 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1465 the support for this file format was contributed by David Mosberger-Tang.
1467 * The math code has been replaced with a math library based on fdlibm from
1468 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1469 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1470 functions. The math functions now reside in a separate library, so
1471 programs using them will need to use `-lm' their linking commands.
1473 * John C. Bowman contributed optimized ix87 assembler inline functions.
1475 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1476 mechanism similar to that found in Solaris 2. This is now used for the
1477 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1478 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1479 file controls what services are used for each individual database. This
1480 works by loading shared libraries with names specified in `nsswitch.conf',
1481 so service modules can be changed or added at any time without even
1482 relinking any program. Currently there are the file, db, and NIS based
1483 NSS services available.
1485 * The new functions `strtoq' and `strtouq' parse integer values from
1486 strings, like `strtol' and `strtoul', but they return `long long int' and
1487 `unsigned long long int' values, respectively (64-bit quantities).
1489 * The new functions `strtof' and `strtold' parse floating-point values from
1490 strings, like `strtod', but they return `float' and `long double' values,
1491 respectively (on some machines `double' and `long double' are the same).
1493 * Ulrich Drepper has contributed new implementations of the floating-point
1494 printing and reading code used in the `printf' family of functions and
1495 `strtod', `strtof', and `strtold'. These new functions are perfectly
1496 accurate, and much faster than the old ones.
1498 * The implementation of the POSIX locale model was completely rewritten by
1499 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1500 to compile the POSIX locale definition.
1502 * The former dummy implementations of the strcoll and strxfrm function are
1503 now replaced by fully functional code contributed by Ulrich Drepper. The
1504 collation information comes from the POSIX locale definitions.
1506 * The new header <langinfo.h> defines an interface for accessing
1507 various locale-dependent data (using the locale chosen with `setlocale').
1509 * Ulrich Drepper has contributed a new suite of functions for operation on
1510 wide-character and multibyte-character strings, in <wchar.h>;
1511 and classification and case conversion of wide characters, in <wctype.h>.
1512 These new functions are conforming to the ISO C, Amendement 1 specification.
1514 * There is now a second implementation of the standard I/O library available.
1515 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1516 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1518 * You can now use positional parameter specifications in format strings
1519 for the `printf' and `scanf' families of functions. For example,
1520 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1521 ``Number 6, Mr Jones''. This is mainly useful when providing different
1522 format strings for different languages, whose grammars may dictate
1523 different orderings of the values being printed. To support this
1524 feature, the interface for `register_printf_handler' has changed; see
1525 the header file <printf.h> for details.
1527 * The `printf' and `scanf' families of functions now understand a new
1528 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1529 to group numbers as indicated by the locale; for `scanf' and friends, this
1530 says to accept as valid only a number with all the proper grouping
1531 separators in the right places. In the default "C" locale, numbers are
1532 not grouped; but locales for specific countries will define the usual
1533 conventions (i.e. separate thousands with `,' in the US locale).
1535 * The pgrp functions have been regularized, slightly incompatibly but much
1536 less confusingly. The core functions are now `getpgid' and `setpgid',
1537 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1538 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1539 provided for compatibility. There is no longer an incompatible `getpgrp'
1540 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1542 * The new header file <fts.h> and suite of functions simplify programs that
1543 operate on directory trees. This code comes from 4.4 BSD.
1545 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1546 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1547 NSS scheme used in glibc.
1549 * There is a new malloc debugging hook `__memalign_hook'.
1551 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1552 `unsigned int' in <sys/types.h>. These are for compatibility only and
1553 their use is discouraged.
1555 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1556 done differently, so that it works even without GNU ld.
1558 * New function `euidaccess' checks allowed access to a file like `access',
1559 but using the effective IDs instead of the real IDs.
1561 * The time zone data files have been updated for the latest and greatest
1562 local time conventions of the countries of the world.
1564 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1567 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1568 for formatting floating-point numbers. They are provided only for
1569 compatibility; new programs should use `sprintf' instead. There are
1570 also equivalent function for the `long double' floating-point type and
1571 all functions also exist in a reentrant form.
1573 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1574 functions for maintaining the login-record files (primarily of use to
1575 system programs such as `login'), and convenient functions for
1576 allocating and initializing a pseudo-terminal (pty) device.
1578 * Ulrich Drepper has contributed new support for System V style
1579 shared memory and IPC on systems that support it.
1581 * Ulrich Drepper has contributed several miscellaneous new functions found
1582 in System V: The `hsearch' family of functions provide an effective
1583 implementation of hash tables; `a64l' and `l64a' provide a very simple
1584 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1587 * Ulrich Drepper has contributed new reentrant counterparts for the
1588 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1590 * Ulrich Drepper has contributed new, highly-optimized versions of several
1591 string functions for the i486/Pentium family of processors.
1593 * Ulrich Drepper has updated the Linux-specific code, based largely
1594 on work done in Hongjiu Lu's version of GNU libc for Linux.
1595 The GNU library now supports Linux versions 2.0.10 and later,
1596 using the ELF object file format (i[3456]86-*-linux).
1598 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1600 * David Mosberger-Tang and Richard Henderson have ported the C library
1601 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1602 dynamic linking support for ELF/Alpha.
1604 * Richard Henderson contributed several Alpha optimized assembler function
1605 for arithmetic and string handling.
1607 * Ulrich Drepper has contributed a new set of message catalog functions to
1608 support multiple languages using the <libintl.h> interface, for use with
1609 his new package GNU gettext. Translation volunteers have contributed
1610 catalogs of the library's messages in Spanish, German, and Korean.
1612 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1613 program and the `catgets' function for reading the catalog files it
1614 creates. (The <libintl.h> interface is preferred; we include the
1615 <nl_types.h> interface using `catgets' only for source compatibility with
1616 programs already written to use it.)
1618 * New header file <values.h> gives SVID-compatible names for <limits.h>
1621 * Various new macros, declarations, and small header files for compatibility
1624 * New function `group_member' is a convenient way to check if a process has
1625 a given effective group ID.
1627 * When using GCC 2.7 and later, the socket functions are now declared in a
1628 special way so that passing an argument of type `struct sockaddr_in *',
1629 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1630 `struct sockaddr *' type, does not generate a type-clash warning.
1632 * New function `error' declared in header file <error.h> is a convenient
1633 function for printing error messages and optionally exiting; this is the
1634 canonical function used in GNU programs. The new functions `err', `warn',
1635 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1636 doing the same thing.
1638 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1639 POSIX.2 `glob' function to do ~ and {...} expansion.
1641 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1642 `clearenv' which is used in POSIX.9 is also available.
1644 * New function `getsid' returns session ID number on systems that support it.
1646 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1647 files <db.h> and <mpool.h> provide a rich set of functions for several
1648 types of simple databases stored in memory and in files, and <ndbm.h> is
1649 an old `ndbm'-compatible interface using the `db' functions. Link with
1650 `-ldb' to get these functions.
1652 * New macro `strdupa' copies a string like `strdup', but uses local stack
1653 space from `alloca' instead of dynamic heap space from `malloc'.
1655 * New function `strnlen' is like `strlen' but searches only a given maximum
1656 number of characters for the null terminator. `stpncpy', `strndup' and
1657 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1660 * New function `statfs' in header <sys/statfs.h>.
1662 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1663 provide convenient functions for operating on blocks of null-terminated
1666 * A new suite of functions in <utmp.h> handle all the details of reading
1667 and writing the utmp file.
1669 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1672 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1673 completely POSIX compliant and also implemented the extended functionality
1674 to handle alternate digit representation and alternate era date formats.
1676 * Ulrich Drepper provided an implementation of the `strptime' function
1677 defined in XPG4.2 which transforms a string into a `struct tm' value.
1679 * Paul Eggert provided the tzselect shell script as part of the timezone
1680 code. The shell script makes it easy to select the correct timezone
1683 * The implementation of the malloc family of functions is completely replaced
1684 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1685 The implementation uses the mmap function (if available) and it is
1686 optimized for the use in multi threaded programs.
1688 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1689 functions. This new functionality is usable by specifying a special
1690 salt string and it is compatible with implementation on *BSD systems.
1692 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1693 `getsubopt' to handle second level command line options, `bsd_signal'
1694 to access BSD style `signal' functionality, the obsolete `regexp' style
1697 * the `lchown' function is available on system which support this
1700 * The implementation of the shadow password handling function was contributed
1703 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1705 * POSIX.1g support was added. The <sys/select.h> header is available,
1706 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1707 implementation of `getaddrinfo'.
1711 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1713 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1714 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1716 * The new function `daemon' from 4.4 BSD is useful for server programs that
1717 want to put themselves in the background.
1719 * Joel Sherrill has contributed support for several standalone boards that
1720 run without an operating system.
1722 * `printf', `scanf' and friends now accept a `q' type modifier for long
1723 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1725 * All of the code taken from BSD (notably most of the math and networking
1726 routines) has been updated from the BSD 4.4-Lite release.
1728 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1730 * The new functions `getdomainname' and `setdomainname' fetch or change the
1731 YP/NIS domain name. These are system calls which exist on systems which
1734 * The time zone data files have been updated for the latest international
1737 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1738 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1742 * The C library now includes support for Sun RPC, from Sun's free
1743 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1744 are included. (There is still no support for YP.)
1746 * Tom Quinn has contributed a port of the C library to SGI machines running
1747 Irix 4 (mips-sgi-irix4).
1749 * The new `lockf' function is a simplified interface to the locking
1750 facilities of `fcntl', included for compatibility.
1752 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1754 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1756 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1759 * The error message printed by `assert' for a failed assertion now includes
1760 the name of the program (if using GNU ld) and the name of the calling
1761 function (with versions of GCC that support this).
1763 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1765 * The library now includes the <sys/mman.h> header file and memory
1766 management functions `mmap', `munmap', `mprotect', `msync', and
1767 `madvise', on systems that support those facilities.
1769 * The interface for `mcheck' has changed slightly: the function called to
1770 abort the program when an allocation inconsistency is detected now takes
1771 an argument that indicates the type of failure. The new function
1772 `mprobe' lets you request a consistency check for a particular block at
1773 any time (checks are normally done only when you call `free' or `realloc'
1776 * It is now possible to easily cross-compile the C library, building on one
1777 system a library to run on another machine and/or operating system. All
1778 you need to do is set the variable `HOST_CC' in `configparms' to the
1779 native compiler for programs to run on the machine you are building on (a
1780 few generator programs are used on Unix systems); set `CC' to the
1783 * The new function `fexecve' (only implemented on the GNU system) executes
1784 a program file given a file descriptor already open on the file.
1788 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1789 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1791 * You can set the variable `libprefix' in `configparms' to specify a prefix
1792 to be prepended to installed library files; this makes it easy to install
1793 the GNU C library to be linked as `-lgnuc' or whatever.
1795 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1796 copies a limited number of characters from a string, and returns the
1797 address of the last character written.
1799 * You no longer need to check for whether the installed `stddef.h' is
1800 compatible with the GNU C library. configure now checks for you.
1802 * You can now define a per-stream `fileno' function to convert the
1803 stream's cookie into an integral file descriptor.
1805 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1806 allocates zero bytes of storage, and returns a unique pointer which
1807 you can pass to `realloc' or `free'. The behavior is undefined if
1808 you dereference this pointer.
1810 * The C library now runs on Sony NEWS m68k machines running either
1811 NewsOS 3 or NewsOS 4.
1813 * The new `syscall' function is a system-dependent primitive function
1814 for invoking system calls. It has the canonical behavior on Unix
1815 systems, including unreliable return values for some calls (such as
1816 `pipe', `fork' and `getppid').
1818 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1819 to `EAGAIN', which is the preferred name. On systems whose kernels
1820 use two distinct codes, the C library now translates EWOULDBLOCK to
1821 EAGAIN in every system call function.
1825 * The GNU C Library Reference Manual is now distributed with the library.
1826 `make dvi' will produce a DVI file of the printed manual.
1827 `make info' will produce Info files that you can read on line using C-h i
1828 in Emacs or the `info' program.
1829 Please send comments on the manual to bug-glibc-manual@gnu.org.
1831 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1833 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1835 * Jason Merrill has contributed a port to the Sequent Symmetry running
1836 Dynix version 3 (i386-sequent-dynix).
1838 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1839 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1841 * New function `memory_warnings' lets you arrange to get warnings when
1842 malloc is running out of memory to allocate, like Emacs gives you.
1844 * The C library now contains the relocating allocator used in Emacs 19 for
1845 its editing buffers. This allocator (ralloc) minimizes allocation
1846 overhead and fragmentation by moving allocated regions around whenever it
1847 needs to. You always refer to a ralloc'd region with a "handle" (a
1848 pointer to a pointer--an object of type `void **').
1850 * There is a new `printf' format: `%m' gives you the string corresponding
1851 to the error code in `errno'.
1853 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1854 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1855 pass, the `a' modifier says to fill in a `char **' you pass with a
1858 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1859 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1860 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1862 * `mkstemp' is a traditional Unix function to atomically create and open a
1863 uniquely-named temporary file.
1867 * The standard location for the file that says what the local timezone is
1868 has changed again. It is now `/usr/local/etc/localtime' (or more
1869 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1871 * The distribution no longer contains any files with names longer than 14
1874 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1875 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1877 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1881 * The configuration process has changed quite a bit. The `configure'
1882 script is now used just like the configuration scripts for other GNU
1883 packages. The `sysdeps' directory hierarchy is much rearranged.
1884 The file `INSTALL' explains the new scheme in detail.
1886 * The header files no longer need to be processed into ANSI C and
1887 traditional C versions. There is just one set of files to install, and
1888 it will work with ANSI or old C compilers (including `gcc -traditional').
1890 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1891 MIPS DECStation running Ultrix 4.
1893 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1894 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1895 made itself into a shared library.
1897 * Yet further improved support for the i386, running 4.3 BSD-like systems
1898 (such as Mach 3 with the Unix single-server), or System V.
1900 * New function `strncasecmp' to do case-insensitive string comparison
1901 with limited length.
1903 * New function `strsep' is a reentrant alternative to `strtok'.
1905 * New functions `scandir' and `alphasort' for searching directories.
1907 * New function `setenv' is a better interface to `putenv'.
1909 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1910 function for traversing a directory tree.
1912 * The GNU obstack package is now also part of the C library.
1913 The new function `open_obstack_stream' creates a stdio stream that
1914 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1915 formatted output directly to an obstack.
1917 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1918 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1920 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1922 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1923 things to your strings.
1925 * There are some new test programs: test-fseek, testmb, and testrand.
1927 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1928 These ports are not finished, but are a good starting place for really
1929 supporting those systems.
1931 * `/etc/localtime' is now the standard location for the file that says what
1932 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1933 This follows the general principle that `/etc' is the place for all local
1934 configuration files.
1936 * The C library header files now use `extern "C"' when used by the C++
1937 compiler, so the C library should now work with C++ code.
1939 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1940 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1943 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1944 function which uses the `merge sort' algorithm, and is said to be
1945 significantly faster than the old GNU `qsort' function. Merge sort is
1946 now the standard `qsort' function. The new algorithm can require a lot
1947 of temporary storage; so, the old sorting function is called when the
1948 required storage is not available.
1950 * The C library now includes Michael Glad's Ultra Fast Crypt, which
1951 provides the Unix `crypt' function, plus some other entry points.
1953 * The code and header files taken from 4.4 BSD have been updated with the
1954 latest files released from Berkeley.
1956 ----------------------------------------------------------------------
1957 Copyright information:
1959 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
1961 Permission is granted to anyone to make or distribute verbatim copies
1962 of this document as received, in any medium, provided that the
1963 copyright notice and this permission notice are preserved,
1964 thus giving the recipient permission to redistribute in turn.
1966 Permission is granted to distribute modified versions
1967 of this document, or of portions of it,
1968 under the above conditions, provided also that they
1969 carry prominent notices stating who last changed them.
1972 version-control: never