1 GNU C Library NEWS -- history of user-visible changes. 2011-10-12
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 6779, 6783, 9696, 11589, 12403, 12847, 12868, 12852, 12874, 12885, 12907,
13 12922, 12935, 13007, 13021, 13067, 13068, 13090, 13092, 13114, 13118,
14 13123, 13134, 13138, 13150, 13179, 13192
16 * New program pldd to list loaded object of a process
17 Implemented by Ulrich Drepper.
19 * Add nss_db support back to glibc. No more dependency on Berkeley db
20 and support for initgroups lookups.
21 Implemented by Ulrich Drepper.
23 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
26 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
29 * Optimized strcat and strncat on x86-64 and optimized wcscmp on x86-32 and
31 Contributed by Liubov Dmitrieva.
33 * Optimized strchr and strrchr for SSE on x86-32.
34 Contributed by Liubov Dmitrieva.
36 * Optimized memchr, memrchr, rawmemchr for x86-64.
37 Contributed by Liubov Dmitrieva.
39 * New interfaces: scandirat, scandirat64
40 Implemented by Ulrich Drepper.
42 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
43 Implemented by Ulrich Drepper.
45 * nscd now also caches the netgroup database.
46 Implemented by Ulrich Drepper.
48 * Integrate libm with gcc's -ffinite-math-only option.
49 Implemented by Ulrich Drepper.
53 * The following bugs are resolved with this release:
55 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
56 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
57 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
58 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
59 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
60 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
61 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
62 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
63 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
64 12795, 12811, 12813, 12814, 12841
66 * The RPC implementation in libc is obsoleted. Old programs keep working
67 but new programs cannot be linked with the routines in libc anymore.
68 Programs in need of RPC functionality must be linked against TI-RPC.
69 The TI-RPC implementation is IPv6 enabled and there are other benefits.
71 Visible changes of this change include (obviously) the inability to link
72 programs using RPC functions without referencing the TI-RPC library and the
73 removal of the RPC headers from the glibc headers.
74 Implemented by Ulrich Drepper.
76 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
77 syncfs, setns, sendmmsg
79 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
80 yue_HK, lij_IT, mhr_RU
82 * New encodings: CP770, CP771, CP772, CP773, CP774
84 * New program sotruss to trace calls through PLTs
85 Implemented by Ulrich Drepper.
87 * The malloc hook implementation is marked deprecated and will be removed
88 from the default implementation in the next version. The design never
89 worked ever since the introduction of threads. Even programs which do
90 not create threads themselves can use multiple threads created internally.
94 * The following bugs are resolved with this release:
96 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
97 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
98 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
99 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
102 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
104 * POWER7 optimizations: memset, memcmp, strncmp
106 * New optimized string functions for x86-64: strnlen (SSE2),
107 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
108 Implemented by Ulrich Drepper.
112 * The following bugs are resolved with this release:
114 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
115 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
116 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
117 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
118 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
119 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
120 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
121 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
123 * New interfaces: pthread_getname_np, pthread_setname_np
125 * New Linux interface: recvmmsg
127 * STT_GNU_IFUNC implemented for Sparc by David Miller.
129 * The dynamic linker now recognizes supported ABI versions from the
130 EI_ABIVERSION field in the ELF header.
131 Implemented by Ulrich Drepper.
133 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
134 will not be used to fill in password fields in the passwd.byname replies.
135 Instead it is used to synthesize the shadow.byname table, should it be
136 missing. This is a useful mode in some installations involving Solaris.
137 Implemented by Ulrich Drepper.
139 * New locales: kok_IN, sq_MK, cv_RU
143 * The following bugs are resolved with this release:
145 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
146 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
147 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
148 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
149 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
150 10789, 10817, 10823, 10840, 10847
152 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
154 Implemented by Ulrich Drepper.
156 * Checking version of longjmp added that fails if an uninitialized stack
157 frame would be created. Implemented by Ulrich Drepper.
159 * STT_GNU_IFUNC is now supported in static executables.
160 Implemented by H.J. Lu.
162 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
164 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
165 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
166 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
167 Contributed by H.J. Lu.
169 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
170 Implemented by Ulrich Drepper.
172 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
174 Contributed by H.J. Lu.
176 * Support for fma instruction in AVX on x86-64.
177 Implemented by H.J. Lu and Ulrich Drepper.
179 * AVX support in x86-64 auditing support in ld.so.
180 Implemented by H.J. Lu.
182 * STB_GNU_UNIQUE support added.
183 Implemented by Ulrich Drepper.
185 * Implement second fallback mode for optimized DNS lookup for even more
186 broken environments. If two requests from the same port are not
187 handled correctly close the socket and open a new one before sending
188 the second request. The 'single-request-reopen' option in /etc/resolv.conf
189 can be used to select this mode right away, instead of rediscovering the
190 necessity is every process again.
191 Implemented by Ulrich Drepper.
193 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
194 Implemented by Adam Tkac.
196 * Optimized iconv conversions for S390x.
197 Implemented by Andreas Krebbel.
199 * Using condvars with PI mutexes is now more efficient due to kernel
200 support for requeueing to PI futexes. NPTL support added for x86-64.
201 Implemented by Ulrich Drepper.
203 * New locales: ps_AF, my_MM
207 * The following bugs are resolved with this release:
209 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
210 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
211 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
212 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
213 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
215 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
216 Implemented by Ulrich Drepper.
218 * New Linux interfaces: accept4, fallocate, fallocate64.
219 Implemented by Ulrich Drepper.
221 * Correct declarations of string function when used in C++ code. This
222 could lead to compile errors for invalid C++ code.
224 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
227 * New POSIX 2008 interface: psiginfo
228 Implemented by Ulrich Drepper.
230 * New ISO C++1x interfaces: quick_exit, at_quick_exit
231 Implemented by Ulrich Drepper.
233 * Support for selecting between multiple function definitions at runtime
234 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
236 * The libcrypt library can now use the hash function implementations in
237 NSS. Implemented by Ulrich Drepper.
239 * The malloc implementation can be compiled to be less memory efficient
240 but higher performing in multi-threaded programs.
241 Implemented by Ulrich Drepper.
243 * New locales: nan_TW@latin, ks_IN
245 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
246 Implemented by Ulrich Drepper.
248 * Extended printf hook support. It is possible to use user-defined types
249 and extend existing format specifiers.
250 Implemented by Ulrich Drepper.
252 * Handling for group shadow files has been added.
253 Implemented by Ulrich Drepper.
255 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
256 servers (the case, e.g., for some people using the built-in DNS
257 server in ADSL modems/routers). There is a once-per-process timeout
258 in case of a broken server. To avoid it, users can run nscd or put
259 'options single-request' in /etc/resolv.conf.
260 Implemented by Ulrich Drepper.
264 * The following bugs are resolved with this release:
266 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
267 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
268 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
269 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
270 6968, 6974, 6980, 6995, 7008, 7009, 7029
272 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
273 up at the same time. Implemented by Ulrich Drepper.
275 * TLS descriptors for LD and GD on x86 and x86-64.
276 Implemented by Alexandre Oliva.
278 * getaddrinfo now handles DCCP and UDPlite.
279 Implemented by Ulrich Drepper.
281 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
282 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
283 Implemented by Ulrich Drepper.
285 * New implementation of memmem, strstr, and strcasestr which is O(n).
286 Implemented by Eric Blake.
288 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
290 * Implement "e" option for popen to open file descriptor with the
291 close-on-exec flag set. Implemented by Ulrich Drepper.
293 * Implement "b" mode for fmemopen. In this mode writes writes don't
294 implicitly add a NUL byte and seeks from the end of the buffer really
295 use the buffer end, not the string length as the basis.
296 Implemented by Ulrich Drepper.
298 * Many functions, exported and internal, now atomically set the close-on-exec
299 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
301 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
303 Implemented by Pravin Satpute.
305 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
309 * The following bugs are resolved with this release:
311 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
312 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
313 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
314 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
315 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
316 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
317 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
319 * New locales: bo_CN, bo_IN, shs_CA.
321 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
323 * Sorting rules for some Indian languages (Devanagari and Gujarati).
324 Implemented by Pravin Satpute.
326 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
328 * nscd caches now all timeouts for DNS entries
329 Implemented by Ulrich Drepper.
331 * nscd is more efficient and wakes up less often.
332 Implemented by Ulrich Drepper.
334 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
335 vdprintf, and obstack_vprintf.
336 Implemented by Jakub Jelinek.
338 * Faster memset for x86-64.
339 Implemented by Harsha Jagasia and H.J. Lu.
341 * Faster memcpy on x86.
342 Implemented by Ulrich Drepper.
344 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
345 Implemented by Ulrich Drepper.
347 * Faster sqrt and sqrtf implemention for some PPC variants.
348 Implemented by Stephen Munroe.
352 * The following bugs are resolved with this release:
354 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
355 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
356 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
357 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
358 5071, 5103, 5104, 5112, 5113, 5184, 5186
360 * More checking functions: fread, fread_unlocked, open*, mq_open.
361 Implemented by Jakub Jelinek and Ulrich Drepper.
363 * Extend fortification to C++. Implemented by Jakub Jelinek.
365 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
366 by not recognizing 'a' as a modifier when those specs are requested.
367 Implemented by Jakub Jelinek.
369 * PPC optimizations to math and string functions.
370 Implemented by Steven Munroe.
372 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
373 options to be passed. Implemented by Ulrich Drepper.
375 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
377 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
378 Implemented by Ulrich Drepper.
380 * Handle private futexes in the NPTL implementation.
381 Implemented by Jakub Jelinek and Ulrich Drepper.
383 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
384 Implemented by Roland McGrath and Ulrich Drepper.
386 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
388 * SHA-256 and SHA-512 based password encryption.
389 Implemented by Ulrich Drepper.
391 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
392 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
395 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
396 Implemented by Ulrich Drepper.
400 * The following bugs are resolved with this release:
402 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
403 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
404 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
405 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
406 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
407 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
408 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
411 * New Linux interfaces: epoll_pwait, sched_getcpu.
413 * New generic interfaces: strerror_l.
415 * nscd can now cache the services database. Implemented by Ulrich Drepper.
419 * The following bugs are resolved with this release:
421 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
422 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
423 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
424 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
425 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
426 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
427 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
428 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
429 3225, 3251, 3252, 3253, 3273
431 * For Linux, the sorting of addresses returned by getaddrinfo now also
432 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
433 Implemented by Ulrich Drepper.
435 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
436 Implemented by Ulrich Drepper.
438 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
440 * New iconv module for MIK. Contributed by Alexander Shopov.
442 * For sites with broken group and/or passwd database, the auto-propagate
443 option of nscd can prevent creating ID lookup entries from the results
444 of a name lookup and vice versa. This usually is no problem but some
445 site might have problems with the default behavior.
446 Implemented by Ulrich Drepper.
448 * Iterating over entire database in NIS can be slow. With the
449 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
450 to trade time for memory. The entire database will be read at once.
451 Implemented by Ulrich Drepper.
453 * The interfaces introduced in RFC 3542 have been implemented by
456 * Support for the new ELF hash table format was added by Ulrich Drepper.
458 * Support for priority inheritance mutexes added by Jakub Jelinek and
461 * Support for priority protected mutexes added by Jakub Jelinek.
463 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
464 or_IN, csb_PL, fy_NL, sr_ME.
468 * More overflow detection functions.
470 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
471 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
473 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
474 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
475 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
476 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
477 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
478 by Masahide Washizawa.
480 * It is now possible to install audit libraries for the dynamic linker using
481 LD_AUDIT. Implemented by Ulrich Drepper.
483 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
484 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
485 For a libc and libpthread that works well on Linux 2.4 kernels, we
486 recommend using the stable 2.3 branch.
488 * The new function open_wmemstream acts like open_memstream,
489 but uses a wchar_t wide character buffer.
491 * The new function ppoll is an improved version of poll, similar to pselect.
493 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
494 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
495 renameat, unlinkat, linkat, symlinkat, readlinkat.
497 * New Linux kernel system calls: unshare,
498 inotify_init, inotify_add_watch, inotify_rm_watch.
500 * The euidaccess function is now also known by the alias eaccess,
501 for compatibility with some other systems.
503 * Timezone data updated to 2006b version.
507 * The following bugs are resolved with this release:
509 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
510 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
511 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
512 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
513 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
514 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
516 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
518 * As of this release, GCC 4 can be used to compile the C Library.
520 * Timezone data updated to 2005m version.
524 * The following bugs are resolved with this release:
526 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
527 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
528 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
529 777, 787, 821, 822, 823, 825
531 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
535 * Support for RFC 3678. Real implementations exist only for Linux so far.
536 Implemented by Ulrich Drepper.
538 * nscd can now cache entries persistently. Expiring entries are reloaded.
539 For speedups the cache can be shared in memory with client processes.
540 Implemented by Ulrich Drepper.
542 * nscd can now perform SELinux checks.
543 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
545 * getaddrinfo queries are now cached. Canonical name lookup is performed
547 Implemented by Ulrich Drepper.
549 * The nothrow function attribute is used when headers are used by gcc when
550 compiling C code. This can avoid significant amounts of exception
553 * The malloc functions perform more error checking and are stricter when
554 it comes to reacting on errors. The default action is to terminate
555 the process after showing an error message. Implemented by Ulrich Drepper.
557 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
558 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
560 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
561 namespaces using the new function dlmopen(). This feature is of course,
562 like most other dynamic loading functionality, not available in statically
563 linked applications. Implemented by Ulrich Drepper.
565 * Low-overhead boundary checking variants of string and some stdio functions
566 were added. These are to be used in conjunction with a gcc patch by
567 Jakub Jelinek which adds calls to these functions if possible.
568 Implemented by Jakub Jelinek and Ulrich Drepper.
570 * Old code for several operating systems and machine architectures that
571 have not been in working condition in a long time have been removed from
572 the main source tree maintained by the GNU C Library's maintainers.
573 These files are now reside in the separate `ports' source module
574 that is usable as an add-on when building the library.
578 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
579 interrogate the dynamic linker, compatible with the Solaris interface.
581 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
582 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
584 * getifaddrs now uses the netlink interface on Linux to get its information.
585 Implemented by Thorsten Kukuk.
587 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
588 Implemented by Ulrich Drepper.
590 * support for non-executable stacks on x86 has been added. Changes mostly
593 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
596 * getaddrinfo now performs destination address selection according to
601 * Thread-safe interfaces for many functions that access locale data
602 were added in version 2.3, but these features were omitted from NEWS.
603 Many functions have variants with an `_l' suffix that take a `locale_t'
604 object as a parameter rather than consulting the current locale.
605 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
606 create and maintain `locale_t' objects. Additionally, the new function
607 `uselocale' sets "the current locale" (as used by functions not so
608 parameterized) set for an individual thread. These features were added
609 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
611 * The functions getresuid, getresgid, setresuid, and setresgid, which
612 have long been available on Linux, are now declared in <unistd.h>
613 and are now also available on the Hurd.
615 * ELF thread-local storage support (TLS) now works on x86-64.
617 * The new dynamic string token $LIB is expanded in shared library names.
618 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
620 * Aldy Hernandez contributed complete software floating point support for
621 PowerPC machines with no FPU.
623 * fexecve is implemented on Linux.
625 * The `btowc' function should work at least twice as fast due to
626 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
628 * With approriate thread add-ons cancelable functions are now implemented
629 in libc.so as well. No need to call the function in libpthread. This
630 change allowed to finally disable the incorrect and expensive handling
631 of weak definition in ld.so.
633 * Yet more PLT entries in libc.so have been removed. We finally arrived
634 at the bare minimum. Startup times improved appropriately.
636 * Support for the new Linux/x86 system call interface was added. The
637 AT_SYSINFO auxiliary vector entry is recognized and handled.
641 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
644 * iconv (the program and the interface) now accepts empty names (excluding
645 options like //TRANSLIT) to mean "use charset of current locale".
647 * localedef can now transliterate characters in strings which are not in
648 the provided charmap. The information from the input locale is used.
650 * Prelinking support was added for ELF targets. This requires additional
651 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
653 * Read-only stdio streams now use mmap to speed up operation by eliminating
654 copying and buffer underflows. To use add 'm' to the mode string of
655 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
657 * The malloc functions were completely rewritten by Wolfram Gloger based
658 on Doug Lea's malloc-2.7.0.c.
660 * Isamu Hasegawa contributed a completely new and POSIX-conformant
661 implementation of regex.
663 * Bruno Haible upgraded the iconv and locale implementation to support
666 * Contents of the LC_* and LANG environment variables in the CEN style are
667 not recognized anymore. It never was used. Change by Ulrich Drepper.
669 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
670 thread-local storage (TLS) ABI on some platforms.
671 Changes by Ulrich Drepper. SH support by Kaz Kojima.
673 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
674 EUC-JISX0213, and TSCII.
676 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
677 BSD-compatible interface for getting all network interface addresses.
678 Implementation for IPv4 by Roland McGrath.
680 * Loading of locale data is faster due to the introduction of a locale
681 archive. Implemented by Roland McGrath and Ulrich Drepper.
683 * Startup times are significantly reduced by not using exported functions
684 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
687 * Steven Munroe contributed a port to PowerPC64/Linux.
691 * The Hurd now uses the GNU libio implementation of stdio rather than the
692 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
694 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
695 with the same behavior as the Linux system call of the same name.
699 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
700 128-bit long double format.
702 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
703 IBM1161, and IBM1162 charsets.
705 * Andreas Jaeger contributed a port to x86-64/Linux.
707 * Peter Bruin contributed a port to PowerPC/Hurd.
709 * libc functions using I/O streams now can handle wide-oriented streams
712 * optimizations in the dynamic linker. Binaries created by recent binutils
713 versions start up quicker due to reduced time spent on relocations.
715 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
719 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
720 asinh, atanh, j0 for the 128-bit long double format.
722 * Bruno Haible updated all the code handling Unicode in some form to
725 * Speed of regex for single-byte locales is back to previous levels.
726 Patch by Isamu Hasegawa.
728 * Alpha, SPARC, and IA-64 now also using floating stacks.
730 * Startup time of internationalized applications greatly improved through
731 iconv cache. Use iconvconfig to generate the cache file.
732 Contributed by Ulrich Drepper.
734 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
735 severe performance problems. Patch by David Mosberger.
737 * The Hurd port got a lot more functionality like AIO, various stdio
738 extensions, etc. Mainly done by Roland McGrath.
740 * mtrace can now lookup symbols in shared libraries.
744 * Intel's IA-64 math library is largely integrated. It provides fast and
745 accurate implementatations for most basic and standard math functions
746 in float, double, and long double format.
748 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
749 and asin for the 96-bit long double format and asin, log, tan for the
750 128-bit long double format.
752 * The beginning of a last-bit accurate math library by IBM Haifa were added.
753 The basic double functions exist today. Contributed by Abraham Ziv
754 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
755 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
757 * An asynchronous name lookup library was added. The interface is designed
758 after POSIX AIO. The proposal was circulated beforehand to get comments.
759 No negative ones came in. Implemented by Ulrich Drepper.
761 * Port to S390/64bit contributed by Martin Schwidefsky
762 <schwidefsky@de.ibm.com>.
764 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
765 of functions for Linux/IA-64.
767 * The RPC code is now thread safe. Threads can now use the same service
768 of different services at the same time. Patch by Eric Norum
769 <eric.norum@usask.ca> with some help by Ulrich Drepper.
771 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
772 family of functions for Linux/S390.
774 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
775 of functions for Linux/x86.
777 * Port to Linux/CRIS contributed by Axis Communications.
781 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
782 we can now check for namespace violations and missing declarations. The
783 result is that almost all headers are now Unix-compliant (as defined in
784 the upcoming XPG6). The negative side is that some programs might need
785 corrections, too, if they depend on the incorrect form of the headers in
786 previous versions which defined too many symbols and included too many
789 * regex now handles multibyte character sets correctly.
790 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
792 * iconv (the program) does now conform to the upcoming XPG6 and handles
793 charmaps. Instead of the charset names the path of charmaps can be
794 provided and the conversion happens based on this data.
795 Contributed by Ulrich Drepper.
797 * The locale program now provides detailed information about the installed
802 only lists the names of the supported locales
806 provides details such as country, language, and codeset name.
807 Contributed by Ulrich Drepper.
811 * The gencat program now parses the input file according to the charset
812 selected by the LC_CTYPE category. This is important for stateful
813 character sets. To make generating catalogs easier there is a way
814 to overwrite the charset selected by the locale: before the first
815 message or $ quote line the catalog can contain a line like
819 to select the charset (ISO-8859-2 in this case).
821 Implemented by Shinya Hanataka and Ulrich Drepper.
823 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
824 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
825 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
827 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
828 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
830 * The LANGUAGE environment variable is now ignored unless the locale is
831 changed from the default "C" locale.
833 * The usual bug fixes.
837 * Greg McGary added runtime support for bounds checking using gcc's
838 new -fbounded-pointers option. ix86 target is complete. PowerPC
841 * Thorsten Kukuk added secure mode support to nscd.
843 * The Berkeley db libraries have been removed.
845 Related, the nss_db module is now in a separate package since it
846 obviously requires a database library being available.
848 * Wide character I/O streams implemented by Ulrich Drepper.
850 * Functions from the extended socket API added by Ulrich Drepper.
852 * Functions feenableexcept and fedisableexcept to control the
853 behaviour of individual exceptions have been added by Andreas Jaeger.
855 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
857 * The resolver code has been updated from bind 8.2.3-T5B which supports
858 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
861 This change could in some situations effect backward compatibility. Since
862 now `_res' is a thread-local instead of a global variable, modifying it
863 in one thread does not have any effect in other threads.
865 The resolver library was also extended to allow IPv6 as the transport
866 protocol for the requests. This work was done by Stig Venaas.
868 * Compatibility code for K&R C compilers has been removed from the
869 header files. A ISO C compiler is needed to use the library
870 (conforming to either C89 or C99 standard).
872 * Complete rewrite of the localedef program to support multibyte character
873 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
874 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
875 Implemented by Ulrich Drepper.
877 Bruno Haible significantly improved the generation and use of the data
878 structures for the wide character tables.
880 * Plural handling in gettext implemented by Ulrich Drepper.
882 * The utmp daemon has been removed.
884 * The port to MIPS-Linux has been finished by Andreas Jaeger.
886 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
889 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
891 * POSIX barriers implemented by Kaz Kylheku.
893 * POSIX spawn function family implemented by Ulrich Drepper.
895 * POSIX spinlocks are now available.
897 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
899 * the configure option --enable-kernel=X.Y.Z allows to strip out
900 compatibility for kernel versions before X.Y.Z. This is currently only
901 implemented for Linux.
903 * the sockaddr_in6 structure changed. The IPv6 working group added a new
904 field sin6_scope_id. This means that all programs using IPv6 should be
905 recompiled. Don't expect binary compatibility with previous glibc
908 * various conversion modules for IBM character sets contributed by
911 * IA-64 port by Jes Sorensen and HJ Lu.
913 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
914 Compiling the GNU C Library for Linux/ia64
915 ******************************************
917 Please refer to the file INSTALL in the same directory as you found
918 this file for general information about configuring and compiling
921 For general inquiries about glibc under Linux/ia64 please use the
922 following mailing list linux-ia64@linuxia64.org or one of the relevant
925 Recommended Tools for Compilation
926 =================================
928 In order for glibc-2.2 to build correctly on the ia64 you need at
929 least the following versions of the GNU tools (the :
931 * The Cygnus toolchain snapshot for the ia64 as of August 4
932 including the provided set of patches. It is however recommend
933 you use the October 24 toolchain snapshot or a more recent version.
935 OR alternatively you can try the following (the Cygnus toolchain is
936 the recommended solution):
938 * GCC and binutils, GAS and GNU LD out of CVS from
939 sources.redhat.com as of August 28, 2000 or later. The CVS tree
940 may require special patches to work properly on the ia64.
942 Configuring and compiling GNU Libc for Linux/ia64
943 =================================================
945 The library requires Linux kernel version 2.4.0-test4-000728 or
946 later to funtion properly. Besides that it support for debug libraries
947 is currently untested. Hence the following options
948 are required for configuring the library:
950 --disable-debug --enable-kernel=2.4.0
952 It is also important that you make sure the library picks up the
953 appropriate kernel header files, if you do not have recent enough
954 kernel headers in /usr/src/linux/include, you should use the
955 --with-headers=<path> option to specify the location.
957 As an example I personally use the following options to configure
962 --enable-kernel=2.4.0
966 --with-headers=/home/jes/linux/include
971 Jes Sorensen <jes@linuxcare.com>,
973 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
987 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
989 * New xdr functions are added; some rpc functions are now 64bit clean.
991 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
993 * Fixed known incompatibilities with glibc 2.0.
995 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
997 * Optimized a number of functions (especially the ELF dynamic loader).
999 * Update timezone data files.
1001 * lots of charmaps corrections
1003 * some new locale definitions and charmaps
1008 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1009 conform to POSIX member type requirements. Symbol versions have been
1010 adjusted as needed within the library, and for direct use by applications,
1011 but there is potential for problems if third-party libraries use
1012 struct timeval as part of their interface. This does not present
1013 a problem for X and other "essential" system libraries.
1015 * An additional locale model to support C++ Standard Library locale
1016 model and probably more was implemented by Ulrich Drepper.
1018 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1021 * Miles Bader provided the `argp' function family to support hierachical
1022 command line argument parsing, layered on top of getopt.
1024 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1026 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1029 * scanf recognizes the %a and %A format for scanning floating point numbers.
1031 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1032 information and interfaces for the available integer types.
1034 * about 130 new math functions were added to implement the ISO C9x math
1037 * the new header <complex.h> contains definitions of the complex math
1038 functions from ISO C 9X.
1040 * the new header <tgmath.h> defines generic macros to use complex or
1041 real valued functions.
1043 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1045 * Andreas Jaeger provided a test suite for the math library.
1047 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1049 * Ulrich Drepper added character set conversion functions (iconv).
1051 * Optimized string functions have been added.
1053 * The localedata addon is now part of glibc.
1055 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1057 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1058 daemon for NSS (nscd).
1060 Missing a better place here are some numbers on improvements. Under
1061 Linux 2.1.125 un-tar-ing the kernel sources takes
1065 using local files 12.19s 6.88s 22.91s
1067 using NIS 13.92s 8.91s 26.34s
1069 using NIS & nscd 10.37s 7.34s 25.30s
1071 using NIS+ 27.57s 30.37s 640.46s
1073 using NIS+ & nscd 10.25s 7.83s 26.51s
1075 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1077 Keep in mind that non-namelookup related operations dominate above times.
1078 It was just a common complain that using NIS+ unpacking the kernel is
1081 [1] The old nscd implementation is not available anymore since it was
1082 distributed with glibc up to version 2.0.98 and thus is now replaced.
1084 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1086 * Mark Kettenis provided a Hesiod NSS module.
1088 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1089 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1091 * rcmd can now handle netgroups (Dick Streefland).
1093 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1096 * Support for the IPv6 protocol has been added to the socket API, as per the
1097 latest draft standards.
1099 * Support for Linux 2.2 has been added.
1101 * Interface changes relative to the latest 2.0.x release:
1102 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1103 addseverity NEW: Unix98
1104 alphasort64 NEW: LFS
1105 argp_err_exit_status NEW: argp, GNU ext
1106 argp_error NEW: argp, GNU ext
1107 argp_failure NEW: argp, GNU ext
1108 argp_help NEW: argp, GNU ext
1109 argp_parse NEW: argp, GNU ext
1110 argp_program_bug_address NEW: argp, GNU ext
1111 argp_program_version NEW: argp, GNU ext
1112 argp_program_version_hook NEW: argp, GNU ext
1113 argp_state_help NEW: argp, GNU ext
1114 argp_usage NEW: argp, GNU ext
1115 authdes_create NEW: Secure RPC
1116 authdes_getucred NEW: Secure RPC
1117 authdes_pk_create NEW: Secure RPC
1118 backtrace NEW: GNU ext.
1119 backtrace_symbols NEW: GNU ext.
1120 backtrace_symbols_fd NEW: GNU ext.
1122 cacosf NEW: ISO C 9x
1123 cacosh NEW: ISO C 9x
1124 cacoshf NEW: ISO C 9x
1125 cacoshl NEW: ISO C 9x
1126 cacosl NEW: ISO C 9x
1133 casinf NEW: ISO C 9x
1134 casinh NEW: ISO C 9x
1135 casinhf NEW: ISO C 9x
1136 casinhl NEW: ISO C 9x
1137 casinl NEW: ISO C 9x
1139 catanf NEW: ISO C 9x
1140 catanh NEW: ISO C 9x
1141 catanhf NEW: ISO C 9x
1142 catanhl NEW: ISO C 9x
1143 catanl NEW: ISO C 9x
1144 cbc_crypt NEW: Secure RPC
1148 ccoshf NEW: ISO C 9x
1149 ccoshl NEW: ISO C 9x
1155 cimagf NEW: ISO C 9x
1156 cimagl NEW: ISO C 9x
1157 clearerr_locked REMOVED
1158 clntunix_create NEW: sunrpc ext
1160 clog10 NEW: ISO C 9x
1161 clog10f NEW: ISO C 9x
1162 clog10l NEW: ISO C 9x
1172 cprojf NEW: ISO C 9x
1173 cprojl NEW: ISO C 9x
1175 crealf NEW: ISO C 9x
1176 creall NEW: ISO C 9x
1181 csinhf NEW: ISO C 9x
1182 csinhl NEW: ISO C 9x
1185 csqrtf NEW: ISO C 9x
1186 csqrtl NEW: ISO C 9x
1190 ctanhf NEW: ISO C 9x
1191 ctanhl NEW: ISO C 9x
1193 des_setparity NEW: Secure RPC
1194 ecb_crypt NEW: Secure RPC
1195 endutxent NEW: Unix98
1197 exp10f NEW: ISO C 9x
1198 exp10l NEW: ISO C 9x
1202 fattach NEW: STREAMS
1203 fdetach NEW: STREAMS
1207 feclearexcept NEW: ISO C 9x
1208 fegetenv NEW: ISO C 9x
1209 fegetexceptflag NEW: ISO C 9x
1210 fegetround NEW: ISO C 9x
1211 feholdexcept NEW: ISO C 9x
1213 feraiseexcept NEW: ISO C 9x
1214 ferror_locked REMOVED
1215 fesetenv NEW: ISO C 9x
1216 fesetexceptflag NEW: ISO C 9x
1217 fesetround NEW: ISO C 9x
1218 fetestexcept NEW: ISO C 9x
1219 feupdateenv NEW: ISO C 9x
1220 fflush_locked REMOVED
1224 fgets_unlocked NEW: GNU ext.
1225 fileno_locked REMOVED
1237 fputc_locked REMOVED
1238 fputs_unlocked NEW: GNU ext.
1239 fread_unlocked NEW: GNU ext.
1244 fstatvfs NEW: Unix98
1248 ftruncate64 NEW: LFS
1250 fwrite_unlocked NEW: GNU ext.
1251 gai_strerror NEW: IPv6
1255 getchar_locked REMOVED
1257 getdate_err NEW: Unix98
1258 getdate_r NEW: GNU ext.
1260 getnameinfo NEW: IPv6
1261 getnetname NEW: Secure RPC
1262 getpmsg NEW: STREAMS
1263 getpt NEW: Unix98 PTY
1264 getrlimit64 NEW: LFS
1265 getutxent NEW: Unix98
1266 getutxid NEW: Unix98
1267 getutxline NEW: Unix98
1268 glob64 NEW: GNU ext.
1269 globfree64 NEW: GNU ext.
1270 gnu_get_libc_release NEW: GNU ext.
1271 gnu_get_libc_version NEW: GNU ext.
1272 grantpt NEW: Unix98 PTY
1273 host2netname NEW: Secure RPC
1275 iconv_close NEW: iconv
1276 iconv_open NEW: iconv
1277 if_freenameindex NEW: IPv6
1278 if_indextoname NEW: IPv6
1279 if_nameindex NEW: IPv6
1280 if_nametoindex NEW: IPv6
1281 in6addr_any NEW: IPv6
1282 in6addr_loopback NEW: IPv6
1283 inet6_isipv4mapped NEW: IPv6
1284 isastream NEW: STREAMS
1285 iswblank NEW: GNU ext.
1286 key_decryptsession NEW: Secure RPC
1287 key_decryptsession_pk NEW: Secure RPC
1288 key_encryptsession NEW: Secure RPC
1289 key_encryptsession_pk NEW: Secure RPC
1290 key_gendes NEW: Secure RPC
1291 key_get_conv NEW: Secure RPC
1292 key_secretkey_is_set NEW: Secure RPC
1293 key_setnet NEW: Secure RPC
1294 key_setsecret NEW: Secure RPC
1295 llrint NEW: ISO C 9x
1296 llrintf NEW: ISO C 9x
1297 llrintl NEW: ISO C 9x
1298 llround NEW: ISO C 9x
1299 llroundf NEW: ISO C 9x
1300 llroundl NEW: ISO C 9x
1305 lrintf NEW: ISO C 9x
1306 lrintl NEW: ISO C 9x
1307 lround NEW: ISO C 9x
1308 lroundf NEW: ISO C 9x
1309 lroundl NEW: ISO C 9x
1311 makecontext NEW: Unix98
1312 mempcpy NEW: GNU ext.
1315 modify_ldt NEW: kernel
1319 nearbyint NEW: ISO C 9x
1320 nearbyintf NEW: ISO C 9x
1321 nearbyintl NEW: ISO C 9x
1322 netname2host NEW: Secure RPC
1323 netname2user NEW: Secure RPC
1324 nexttoward NEW: ISO C 9x
1325 nexttowardf NEW: ISO C 9x
1326 nexttowardl NEW: ISO C 9x
1330 passwd2des NEW: Secure RPC
1332 pow10f NEW: GNU ext.
1333 pow10l NEW: GNU ext.
1336 printf_size NEW: GNU ext.
1337 printf_size_info NEW: GNU ext.
1338 profil_counter REMOVED
1339 pthread_mutexattr_getkind_np REPLACED
1340 pthread_mutexattr_setkind_np REPLACED
1341 ptsname NEW: Unix98 PTY
1342 ptsname_r NEW: Unix98 PTY
1344 putchar_locked REMOVED
1345 putgrent NEW: GNU ext.
1347 putpmsg NEW: STREAMS
1348 pututxline NEW: Unix98
1352 readdir64_r NEW: LFS
1353 remquo NEW: ISO C 9x
1354 remquof NEW: ISO C 9x
1355 remquol NEW: ISO C 9x
1357 roundf NEW: ISO C 9x
1358 roundl NEW: ISO C 9x
1360 scalbln NEW: ISO C 9x
1361 scalblnf NEW: ISO C 9x
1362 scalblnl NEW: ISO C 9x
1364 sendfile NEW: kernel
1365 setcontext NEW: Unix98
1366 setrlimit64 NEW: LFS
1367 setutxent NEW: Unix98
1369 sigignore NEW: Unix98
1370 sigqueue NEW: POSIX.1b
1371 sigrelse NEW: Unix98
1372 sigset NEW: POSIX.1b
1373 sigtimedwait NEW: POSIX.1b
1374 sigwaitinfo NEW: POSIX.1b
1375 sincos NEW: GNU ext.
1376 sincosf NEW: GNU ext.
1377 sincosl NEW: GNU ext.
1381 strcasestr NEW: GNU ext.
1382 strtoimax NEW: ISO C 9x
1383 strtoumax NEW: ISO C 9x
1384 strverscmp NEW: GNU ext.
1385 svcauthdes_stats NEW: Secure RPC
1386 svcunix_create NEW: sunrpc etx
1387 svcunixfd_create NEW: sunrpc ext
1388 swapcontext NEW: Unix98
1389 tcgetsid NEW: Unix98 PTY
1390 tdestroy NEW: GNU ext.
1391 tgamma NEW: ISO C 9x
1392 tgammaf NEW: ISO C 9x
1393 tgammal NEW: ISO C 9x
1397 truncf NEW: ISO C 9x
1398 truncl NEW: ISO C 9x
1400 unlockpt NEW: Unix98 PTY
1401 updwtmpx NEW: Unix98
1402 user2netname NEW: Secure RPC
1403 utmpxname NEW: Unix98
1404 versionsort NEW: GNU ext.
1405 versionsort64 NEW: GNU ext.
1407 wcscasecmp NEW: GNU ext.
1408 wcsncasecmp NEW: GNU ext.
1409 wcsnlen NEW: GNU ext.
1410 wcstoimax NEW: ISO C 9x
1411 wcstoll NEW: ISO C 9x
1412 wcstoull NEW: ISO C 9x
1413 wcstoumax NEW: ISO C 9x
1415 wordexp NEW: POSIX.2
1416 wordfree NEW: POSIX.2
1417 write_profiling REMOVED
1418 xdecrypt NEW: Secure RPC
1419 xdr_authdes_cred NEW: Secure RPC
1420 xdr_authdes_verf NEW: Secure RPC
1421 xdr_cryptkeyarg NEW: Secure RPC
1422 xdr_cryptkeyarg2 NEW: Secure RPC
1423 xdr_cryptkeyres NEW: Secure RPC
1424 xdr_getcredres NEW: Secure RPC
1425 xdr_key_netstarg NEW: Secure RPC
1426 xdr_key_netstres NEW: Secure RPC
1427 xdr_keybuf NEW: Secure RPC
1428 xdr_keystatus NEW: Secure RPC
1429 xdr_netnamestr NEW: Secure RPC
1430 xdr_sizeof NEW: Secure RPC
1431 xdr_unixcred NEW: sunrpc ext
1432 xencrypt NEW: Secure RPC
1433 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1444 * inet_ntoa is thread-safe
1446 * updwtmp is moved from libutil to libc
1448 * rewrite of cbrt function
1450 * update of timezone data
1464 * add atoll function
1466 * fix complex problems in Berkeley DB code
1468 * fix math functions
1472 * fixed lots of header problems (especially Linux/GNU specific)
1474 * dynamic loader preserves all registers
1476 * Roland McGrath provided support for handling of auxiliary objects in
1477 the ELF dynamic loader.
1479 * support for parallel builds is improved
1483 * GNU extensions are no longer declared by default. To enable them you
1484 must define the macro `_GNU_SOURCE' in your program or compile with
1487 * The library has changed from using GNU ld symbol aliases to using weak
1488 symbols where available. The ELF object file format supports weak
1489 symbols; GNU ld also supports weak symbols in the a.out format. (There
1490 is also now support for other GNU ld extensions in ELF. Use the
1491 `--with-elf' option to configure to indicate you have ELF, and
1492 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1493 of many files which contained only symbol aliases, reducing the size of
1494 the source and the compiled library; many other files were renamed to
1495 less cryptic names previously occupied by the symbol alias files.
1496 There is a new header file <elf.h> for programs which operate on
1497 files in the ELF format.
1499 * Converted to Autoconf version 2, so `configure' has more options.
1500 Run `configure --help' to see the details.
1502 * The library can now be configured to build profiling, highly-optimized
1503 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1504 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1505 `configure' enable building these extra libraries. The shared library is
1506 built by default when using both ELF and GNU ld. When shared libraries
1507 are enabled, the new library `-ldl' is available for arbitrary run-time
1508 loading of shared objects; its interface is defined in <dlfcn.h>. The
1509 new header file <link.h> gives access to the internals of the run-time
1510 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1511 application of same name on other systems and it provides information
1512 about dynamically linked binaries.
1514 * The C library now provides the run-time support code for profiling
1515 executables compiled with `-pg'. Programs can control the profiling code
1516 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1517 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1518 the support for this file format was contributed by David Mosberger-Tang.
1520 * The math code has been replaced with a math library based on fdlibm from
1521 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1522 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1523 functions. The math functions now reside in a separate library, so
1524 programs using them will need to use `-lm' their linking commands.
1526 * John C. Bowman contributed optimized ix87 assembler inline functions.
1528 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1529 mechanism similar to that found in Solaris 2. This is now used for the
1530 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1531 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1532 file controls what services are used for each individual database. This
1533 works by loading shared libraries with names specified in `nsswitch.conf',
1534 so service modules can be changed or added at any time without even
1535 relinking any program. Currently there are the file, db, and NIS based
1536 NSS services available.
1538 * The new functions `strtoq' and `strtouq' parse integer values from
1539 strings, like `strtol' and `strtoul', but they return `long long int' and
1540 `unsigned long long int' values, respectively (64-bit quantities).
1542 * The new functions `strtof' and `strtold' parse floating-point values from
1543 strings, like `strtod', but they return `float' and `long double' values,
1544 respectively (on some machines `double' and `long double' are the same).
1546 * Ulrich Drepper has contributed new implementations of the floating-point
1547 printing and reading code used in the `printf' family of functions and
1548 `strtod', `strtof', and `strtold'. These new functions are perfectly
1549 accurate, and much faster than the old ones.
1551 * The implementation of the POSIX locale model was completely rewritten by
1552 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1553 to compile the POSIX locale definition.
1555 * The former dummy implementations of the strcoll and strxfrm function are
1556 now replaced by fully functional code contributed by Ulrich Drepper. The
1557 collation information comes from the POSIX locale definitions.
1559 * The new header <langinfo.h> defines an interface for accessing
1560 various locale-dependent data (using the locale chosen with `setlocale').
1562 * Ulrich Drepper has contributed a new suite of functions for operation on
1563 wide-character and multibyte-character strings, in <wchar.h>;
1564 and classification and case conversion of wide characters, in <wctype.h>.
1565 These new functions are conforming to the ISO C, Amendement 1 specification.
1567 * There is now a second implementation of the standard I/O library available.
1568 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1569 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1571 * You can now use positional parameter specifications in format strings
1572 for the `printf' and `scanf' families of functions. For example,
1573 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1574 ``Number 6, Mr Jones''. This is mainly useful when providing different
1575 format strings for different languages, whose grammars may dictate
1576 different orderings of the values being printed. To support this
1577 feature, the interface for `register_printf_handler' has changed; see
1578 the header file <printf.h> for details.
1580 * The `printf' and `scanf' families of functions now understand a new
1581 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1582 to group numbers as indicated by the locale; for `scanf' and friends, this
1583 says to accept as valid only a number with all the proper grouping
1584 separators in the right places. In the default "C" locale, numbers are
1585 not grouped; but locales for specific countries will define the usual
1586 conventions (i.e. separate thousands with `,' in the US locale).
1588 * The pgrp functions have been regularized, slightly incompatibly but much
1589 less confusingly. The core functions are now `getpgid' and `setpgid',
1590 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1591 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1592 provided for compatibility. There is no longer an incompatible `getpgrp'
1593 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1595 * The new header file <fts.h> and suite of functions simplify programs that
1596 operate on directory trees. This code comes from 4.4 BSD.
1598 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1599 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1600 NSS scheme used in glibc.
1602 * There is a new malloc debugging hook `__memalign_hook'.
1604 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1605 `unsigned int' in <sys/types.h>. These are for compatibility only and
1606 their use is discouraged.
1608 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1609 done differently, so that it works even without GNU ld.
1611 * New function `euidaccess' checks allowed access to a file like `access',
1612 but using the effective IDs instead of the real IDs.
1614 * The time zone data files have been updated for the latest and greatest
1615 local time conventions of the countries of the world.
1617 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1620 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1621 for formatting floating-point numbers. They are provided only for
1622 compatibility; new programs should use `sprintf' instead. There are
1623 also equivalent function for the `long double' floating-point type and
1624 all functions also exist in a reentrant form.
1626 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1627 functions for maintaining the login-record files (primarily of use to
1628 system programs such as `login'), and convenient functions for
1629 allocating and initializing a pseudo-terminal (pty) device.
1631 * Ulrich Drepper has contributed new support for System V style
1632 shared memory and IPC on systems that support it.
1634 * Ulrich Drepper has contributed several miscellaneous new functions found
1635 in System V: The `hsearch' family of functions provide an effective
1636 implementation of hash tables; `a64l' and `l64a' provide a very simple
1637 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1640 * Ulrich Drepper has contributed new reentrant counterparts for the
1641 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1643 * Ulrich Drepper has contributed new, highly-optimized versions of several
1644 string functions for the i486/Pentium family of processors.
1646 * Ulrich Drepper has updated the Linux-specific code, based largely
1647 on work done in Hongjiu Lu's version of GNU libc for Linux.
1648 The GNU library now supports Linux versions 2.0.10 and later,
1649 using the ELF object file format (i[3456]86-*-linux).
1651 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1653 * David Mosberger-Tang and Richard Henderson have ported the C library
1654 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1655 dynamic linking support for ELF/Alpha.
1657 * Richard Henderson contributed several Alpha optimized assembler function
1658 for arithmetic and string handling.
1660 * Ulrich Drepper has contributed a new set of message catalog functions to
1661 support multiple languages using the <libintl.h> interface, for use with
1662 his new package GNU gettext. Translation volunteers have contributed
1663 catalogs of the library's messages in Spanish, German, and Korean.
1665 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1666 program and the `catgets' function for reading the catalog files it
1667 creates. (The <libintl.h> interface is preferred; we include the
1668 <nl_types.h> interface using `catgets' only for source compatibility with
1669 programs already written to use it.)
1671 * New header file <values.h> gives SVID-compatible names for <limits.h>
1674 * Various new macros, declarations, and small header files for compatibility
1677 * New function `group_member' is a convenient way to check if a process has
1678 a given effective group ID.
1680 * When using GCC 2.7 and later, the socket functions are now declared in a
1681 special way so that passing an argument of type `struct sockaddr_in *',
1682 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1683 `struct sockaddr *' type, does not generate a type-clash warning.
1685 * New function `error' declared in header file <error.h> is a convenient
1686 function for printing error messages and optionally exiting; this is the
1687 canonical function used in GNU programs. The new functions `err', `warn',
1688 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1689 doing the same thing.
1691 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1692 POSIX.2 `glob' function to do ~ and {...} expansion.
1694 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1695 `clearenv' which is used in POSIX.9 is also available.
1697 * New function `getsid' returns session ID number on systems that support it.
1699 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1700 files <db.h> and <mpool.h> provide a rich set of functions for several
1701 types of simple databases stored in memory and in files, and <ndbm.h> is
1702 an old `ndbm'-compatible interface using the `db' functions. Link with
1703 `-ldb' to get these functions.
1705 * New macro `strdupa' copies a string like `strdup', but uses local stack
1706 space from `alloca' instead of dynamic heap space from `malloc'.
1708 * New function `strnlen' is like `strlen' but searches only a given maximum
1709 number of characters for the null terminator. `stpncpy', `strndup' and
1710 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1713 * New function `statfs' in header <sys/statfs.h>.
1715 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1716 provide convenient functions for operating on blocks of null-terminated
1719 * A new suite of functions in <utmp.h> handle all the details of reading
1720 and writing the utmp file.
1722 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1725 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1726 completely POSIX compliant and also implemented the extended functionality
1727 to handle alternate digit representation and alternate era date formats.
1729 * Ulrich Drepper provided an implementation of the `strptime' function
1730 defined in XPG4.2 which transforms a string into a `struct tm' value.
1732 * Paul Eggert provided the tzselect shell script as part of the timezone
1733 code. The shell script makes it easy to select the correct timezone
1736 * The implementation of the malloc family of functions is completely replaced
1737 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1738 The implementation uses the mmap function (if available) and it is
1739 optimized for the use in multi threaded programs.
1741 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1742 functions. This new functionality is usable by specifying a special
1743 salt string and it is compatible with implementation on *BSD systems.
1745 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1746 `getsubopt' to handle second level command line options, `bsd_signal'
1747 to access BSD style `signal' functionality, the obsolete `regexp' style
1750 * the `lchown' function is available on system which support this
1753 * The implementation of the shadow password handling function was contributed
1756 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1758 * POSIX.1g support was added. The <sys/select.h> header is available,
1759 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1760 implementation of `getaddrinfo'.
1764 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1766 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1767 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1769 * The new function `daemon' from 4.4 BSD is useful for server programs that
1770 want to put themselves in the background.
1772 * Joel Sherrill has contributed support for several standalone boards that
1773 run without an operating system.
1775 * `printf', `scanf' and friends now accept a `q' type modifier for long
1776 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1778 * All of the code taken from BSD (notably most of the math and networking
1779 routines) has been updated from the BSD 4.4-Lite release.
1781 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1783 * The new functions `getdomainname' and `setdomainname' fetch or change the
1784 YP/NIS domain name. These are system calls which exist on systems which
1787 * The time zone data files have been updated for the latest international
1790 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1791 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1795 * The C library now includes support for Sun RPC, from Sun's free
1796 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1797 are included. (There is still no support for YP.)
1799 * Tom Quinn has contributed a port of the C library to SGI machines running
1800 Irix 4 (mips-sgi-irix4).
1802 * The new `lockf' function is a simplified interface to the locking
1803 facilities of `fcntl', included for compatibility.
1805 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1807 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1809 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1812 * The error message printed by `assert' for a failed assertion now includes
1813 the name of the program (if using GNU ld) and the name of the calling
1814 function (with versions of GCC that support this).
1816 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1818 * The library now includes the <sys/mman.h> header file and memory
1819 management functions `mmap', `munmap', `mprotect', `msync', and
1820 `madvise', on systems that support those facilities.
1822 * The interface for `mcheck' has changed slightly: the function called to
1823 abort the program when an allocation inconsistency is detected now takes
1824 an argument that indicates the type of failure. The new function
1825 `mprobe' lets you request a consistency check for a particular block at
1826 any time (checks are normally done only when you call `free' or `realloc'
1829 * It is now possible to easily cross-compile the C library, building on one
1830 system a library to run on another machine and/or operating system. All
1831 you need to do is set the variable `HOST_CC' in `configparms' to the
1832 native compiler for programs to run on the machine you are building on (a
1833 few generator programs are used on Unix systems); set `CC' to the
1836 * The new function `fexecve' (only implemented on the GNU system) executes
1837 a program file given a file descriptor already open on the file.
1841 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1842 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1844 * You can set the variable `libprefix' in `configparms' to specify a prefix
1845 to be prepended to installed library files; this makes it easy to install
1846 the GNU C library to be linked as `-lgnuc' or whatever.
1848 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1849 copies a limited number of characters from a string, and returns the
1850 address of the last character written.
1852 * You no longer need to check for whether the installed `stddef.h' is
1853 compatible with the GNU C library. configure now checks for you.
1855 * You can now define a per-stream `fileno' function to convert the
1856 stream's cookie into an integral file descriptor.
1858 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1859 allocates zero bytes of storage, and returns a unique pointer which
1860 you can pass to `realloc' or `free'. The behavior is undefined if
1861 you dereference this pointer.
1863 * The C library now runs on Sony NEWS m68k machines running either
1864 NewsOS 3 or NewsOS 4.
1866 * The new `syscall' function is a system-dependent primitive function
1867 for invoking system calls. It has the canonical behavior on Unix
1868 systems, including unreliable return values for some calls (such as
1869 `pipe', `fork' and `getppid').
1871 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1872 to `EAGAIN', which is the preferred name. On systems whose kernels
1873 use two distinct codes, the C library now translates EWOULDBLOCK to
1874 EAGAIN in every system call function.
1878 * The GNU C Library Reference Manual is now distributed with the library.
1879 `make dvi' will produce a DVI file of the printed manual.
1880 `make info' will produce Info files that you can read on line using C-h i
1881 in Emacs or the `info' program.
1882 Please send comments on the manual to bug-glibc-manual@gnu.org.
1884 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1886 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1888 * Jason Merrill has contributed a port to the Sequent Symmetry running
1889 Dynix version 3 (i386-sequent-dynix).
1891 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1892 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1894 * New function `memory_warnings' lets you arrange to get warnings when
1895 malloc is running out of memory to allocate, like Emacs gives you.
1897 * The C library now contains the relocating allocator used in Emacs 19 for
1898 its editing buffers. This allocator (ralloc) minimizes allocation
1899 overhead and fragmentation by moving allocated regions around whenever it
1900 needs to. You always refer to a ralloc'd region with a "handle" (a
1901 pointer to a pointer--an object of type `void **').
1903 * There is a new `printf' format: `%m' gives you the string corresponding
1904 to the error code in `errno'.
1906 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1907 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1908 pass, the `a' modifier says to fill in a `char **' you pass with a
1911 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1912 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1913 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1915 * `mkstemp' is a traditional Unix function to atomically create and open a
1916 uniquely-named temporary file.
1920 * The standard location for the file that says what the local timezone is
1921 has changed again. It is now `/usr/local/etc/localtime' (or more
1922 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1924 * The distribution no longer contains any files with names longer than 14
1927 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1928 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1930 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1934 * The configuration process has changed quite a bit. The `configure'
1935 script is now used just like the configuration scripts for other GNU
1936 packages. The `sysdeps' directory hierarchy is much rearranged.
1937 The file `INSTALL' explains the new scheme in detail.
1939 * The header files no longer need to be processed into ANSI C and
1940 traditional C versions. There is just one set of files to install, and
1941 it will work with ANSI or old C compilers (including `gcc -traditional').
1943 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1944 MIPS DECStation running Ultrix 4.
1946 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1947 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1948 made itself into a shared library.
1950 * Yet further improved support for the i386, running 4.3 BSD-like systems
1951 (such as Mach 3 with the Unix single-server), or System V.
1953 * New function `strncasecmp' to do case-insensitive string comparison
1954 with limited length.
1956 * New function `strsep' is a reentrant alternative to `strtok'.
1958 * New functions `scandir' and `alphasort' for searching directories.
1960 * New function `setenv' is a better interface to `putenv'.
1962 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1963 function for traversing a directory tree.
1965 * The GNU obstack package is now also part of the C library.
1966 The new function `open_obstack_stream' creates a stdio stream that
1967 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1968 formatted output directly to an obstack.
1970 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1971 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1973 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1975 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1976 things to your strings.
1978 * There are some new test programs: test-fseek, testmb, and testrand.
1980 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1981 These ports are not finished, but are a good starting place for really
1982 supporting those systems.
1984 * `/etc/localtime' is now the standard location for the file that says what
1985 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1986 This follows the general principle that `/etc' is the place for all local
1987 configuration files.
1989 * The C library header files now use `extern "C"' when used by the C++
1990 compiler, so the C library should now work with C++ code.
1992 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
1993 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
1996 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
1997 function which uses the `merge sort' algorithm, and is said to be
1998 significantly faster than the old GNU `qsort' function. Merge sort is
1999 now the standard `qsort' function. The new algorithm can require a lot
2000 of temporary storage; so, the old sorting function is called when the
2001 required storage is not available.
2003 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2004 provides the Unix `crypt' function, plus some other entry points.
2006 * The code and header files taken from 4.4 BSD have been updated with the
2007 latest files released from Berkeley.
2009 ----------------------------------------------------------------------
2010 Copyright information:
2012 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2014 Permission is granted to anyone to make or distribute verbatim copies
2015 of this document as received, in any medium, provided that the
2016 copyright notice and this permission notice are preserved,
2017 thus giving the recipient permission to redistribute in turn.
2019 Permission is granted to distribute modified versions
2020 of this document, or of portions of it,
2021 under the above conditions, provided also that they
2022 carry prominent notices stating who last changed them.
2025 version-control: never
projects / platform / upstream / glibc.git / blob