1 GNU C Library NEWS -- history of user-visible changes. 2011-12-21
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, 10103, 10709, 11589, 12403, 12847, 12868, 12852, 12874,
13 12885, 12892, 12907, 12922, 12935, 13007, 13021, 13067, 13068, 13090,
14 13092, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13179, 13192,
15 13268, 13276, 13291, 13335, 13337, 13344, 13358, 13367, 13439, 13446,
16 13472, 13484, 13506, 13524
18 * New program pldd to list loaded object of a process
19 Implemented by Ulrich Drepper.
21 * Add nss_db support back to glibc. No more dependency on Berkeley db
22 and support for initgroups lookups.
23 Implemented by Ulrich Drepper.
25 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
28 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
31 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
33 Contributed by Liubov Dmitrieva.
35 * Optimized strchr and strrchr for SSE on x86-32.
36 Contributed by Liubov Dmitrieva.
38 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
39 for x86-64 and x86-32.
40 Contributed by Liubov Dmitrieva.
42 * New interfaces: scandirat, scandirat64
43 Implemented by Ulrich Drepper.
45 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
46 Implemented by Ulrich Drepper.
48 * nscd now also caches the netgroup database.
49 Implemented by Ulrich Drepper.
51 * Integrate libm with gcc's -ffinite-math-only option.
52 Implemented by Ulrich Drepper.
54 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
55 to math functions. Implemented by Ulrich Drepper.
57 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
58 Implemented by Ulrich Drepper.
60 * New Linux interfaces: process_vm_readv, process_vm_writev
62 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
63 Implemented by Ulrich Drepper.
65 * Optimized nearbyint and strcasecmp for PPC.
66 Implemented by Adhemerval Zanella.
70 * The following bugs are resolved with this release:
72 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
73 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
74 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
75 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
76 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
77 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
78 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
79 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
80 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
81 12795, 12811, 12813, 12814, 12841
83 * The RPC implementation in libc is obsoleted. Old programs keep working
84 but new programs cannot be linked with the routines in libc anymore.
85 Programs in need of RPC functionality must be linked against TI-RPC.
86 The TI-RPC implementation is IPv6 enabled and there are other benefits.
88 Visible changes of this change include (obviously) the inability to link
89 programs using RPC functions without referencing the TI-RPC library and the
90 removal of the RPC headers from the glibc headers.
91 Implemented by Ulrich Drepper.
93 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
94 syncfs, setns, sendmmsg
96 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
97 yue_HK, lij_IT, mhr_RU
99 * New encodings: CP770, CP771, CP772, CP773, CP774
101 * New program sotruss to trace calls through PLTs
102 Implemented by Ulrich Drepper.
104 * The malloc hook implementation is marked deprecated and will be removed
105 from the default implementation in the next version. The design never
106 worked ever since the introduction of threads. Even programs which do
107 not create threads themselves can use multiple threads created internally.
111 * The following bugs are resolved with this release:
113 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
114 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
115 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
116 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
119 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
121 * POWER7 optimizations: memset, memcmp, strncmp
123 * New optimized string functions for x86-64: strnlen (SSE2),
124 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
125 Implemented by Ulrich Drepper.
129 * The following bugs are resolved with this release:
131 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
132 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
133 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
134 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
135 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
136 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
137 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
138 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
140 * New interfaces: pthread_getname_np, pthread_setname_np
142 * New Linux interface: recvmmsg
144 * STT_GNU_IFUNC implemented for Sparc by David Miller.
146 * The dynamic linker now recognizes supported ABI versions from the
147 EI_ABIVERSION field in the ELF header.
148 Implemented by Ulrich Drepper.
150 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
151 will not be used to fill in password fields in the passwd.byname replies.
152 Instead it is used to synthesize the shadow.byname table, should it be
153 missing. This is a useful mode in some installations involving Solaris.
154 Implemented by Ulrich Drepper.
156 * New locales: kok_IN, sq_MK, cv_RU
160 * The following bugs are resolved with this release:
162 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
163 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
164 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
165 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
166 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
167 10789, 10817, 10823, 10840, 10847
169 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
171 Implemented by Ulrich Drepper.
173 * Checking version of longjmp added that fails if an uninitialized stack
174 frame would be created. Implemented by Ulrich Drepper.
176 * STT_GNU_IFUNC is now supported in static executables.
177 Implemented by H.J. Lu.
179 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
181 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
182 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
183 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
184 Contributed by H.J. Lu.
186 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
187 Implemented by Ulrich Drepper.
189 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
191 Contributed by H.J. Lu.
193 * Support for fma instruction in AVX on x86-64.
194 Implemented by H.J. Lu and Ulrich Drepper.
196 * AVX support in x86-64 auditing support in ld.so.
197 Implemented by H.J. Lu.
199 * STB_GNU_UNIQUE support added.
200 Implemented by Ulrich Drepper.
202 * Implement second fallback mode for optimized DNS lookup for even more
203 broken environments. If two requests from the same port are not
204 handled correctly close the socket and open a new one before sending
205 the second request. The 'single-request-reopen' option in /etc/resolv.conf
206 can be used to select this mode right away, instead of rediscovering the
207 necessity is every process again.
208 Implemented by Ulrich Drepper.
210 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
211 Implemented by Adam Tkac.
213 * Optimized iconv conversions for S390x.
214 Implemented by Andreas Krebbel.
216 * Using condvars with PI mutexes is now more efficient due to kernel
217 support for requeueing to PI futexes. NPTL support added for x86-64.
218 Implemented by Ulrich Drepper.
220 * New locales: ps_AF, my_MM
224 * The following bugs are resolved with this release:
226 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
227 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
228 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
229 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
230 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
232 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
233 Implemented by Ulrich Drepper.
235 * New Linux interfaces: accept4, fallocate, fallocate64.
236 Implemented by Ulrich Drepper.
238 * Correct declarations of string function when used in C++ code. This
239 could lead to compile errors for invalid C++ code.
241 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
244 * New POSIX 2008 interface: psiginfo
245 Implemented by Ulrich Drepper.
247 * New ISO C++1x interfaces: quick_exit, at_quick_exit
248 Implemented by Ulrich Drepper.
250 * Support for selecting between multiple function definitions at runtime
251 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
253 * The libcrypt library can now use the hash function implementations in
254 NSS. Implemented by Ulrich Drepper.
256 * The malloc implementation can be compiled to be less memory efficient
257 but higher performing in multi-threaded programs.
258 Implemented by Ulrich Drepper.
260 * New locales: nan_TW@latin, ks_IN
262 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
263 Implemented by Ulrich Drepper.
265 * Extended printf hook support. It is possible to use user-defined types
266 and extend existing format specifiers.
267 Implemented by Ulrich Drepper.
269 * Handling for group shadow files has been added.
270 Implemented by Ulrich Drepper.
272 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
273 servers (the case, e.g., for some people using the built-in DNS
274 server in ADSL modems/routers). There is a once-per-process timeout
275 in case of a broken server. To avoid it, users can run nscd or put
276 'options single-request' in /etc/resolv.conf.
277 Implemented by Ulrich Drepper.
281 * The following bugs are resolved with this release:
283 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
284 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
285 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
286 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
287 6968, 6974, 6980, 6995, 7008, 7009, 7029
289 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
290 up at the same time. Implemented by Ulrich Drepper.
292 * TLS descriptors for LD and GD on x86 and x86-64.
293 Implemented by Alexandre Oliva.
295 * getaddrinfo now handles DCCP and UDPlite.
296 Implemented by Ulrich Drepper.
298 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
299 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
300 Implemented by Ulrich Drepper.
302 * New implementation of memmem, strstr, and strcasestr which is O(n).
303 Implemented by Eric Blake.
305 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
307 * Implement "e" option for popen to open file descriptor with the
308 close-on-exec flag set. Implemented by Ulrich Drepper.
310 * Implement "b" mode for fmemopen. In this mode writes writes don't
311 implicitly add a NUL byte and seeks from the end of the buffer really
312 use the buffer end, not the string length as the basis.
313 Implemented by Ulrich Drepper.
315 * Many functions, exported and internal, now atomically set the close-on-exec
316 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
318 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
320 Implemented by Pravin Satpute.
322 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
326 * The following bugs are resolved with this release:
328 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
329 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
330 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
331 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
332 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
333 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
334 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
336 * New locales: bo_CN, bo_IN, shs_CA.
338 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
340 * Sorting rules for some Indian languages (Devanagari and Gujarati).
341 Implemented by Pravin Satpute.
343 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
345 * nscd caches now all timeouts for DNS entries
346 Implemented by Ulrich Drepper.
348 * nscd is more efficient and wakes up less often.
349 Implemented by Ulrich Drepper.
351 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
352 vdprintf, and obstack_vprintf.
353 Implemented by Jakub Jelinek.
355 * Faster memset for x86-64.
356 Implemented by Harsha Jagasia and H.J. Lu.
358 * Faster memcpy on x86.
359 Implemented by Ulrich Drepper.
361 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
362 Implemented by Ulrich Drepper.
364 * Faster sqrt and sqrtf implemention for some PPC variants.
365 Implemented by Stephen Munroe.
369 * The following bugs are resolved with this release:
371 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
372 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
373 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
374 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
375 5071, 5103, 5104, 5112, 5113, 5184, 5186
377 * More checking functions: fread, fread_unlocked, open*, mq_open.
378 Implemented by Jakub Jelinek and Ulrich Drepper.
380 * Extend fortification to C++. Implemented by Jakub Jelinek.
382 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
383 by not recognizing 'a' as a modifier when those specs are requested.
384 Implemented by Jakub Jelinek.
386 * PPC optimizations to math and string functions.
387 Implemented by Steven Munroe.
389 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
390 options to be passed. Implemented by Ulrich Drepper.
392 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
394 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
395 Implemented by Ulrich Drepper.
397 * Handle private futexes in the NPTL implementation.
398 Implemented by Jakub Jelinek and Ulrich Drepper.
400 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
401 Implemented by Roland McGrath and Ulrich Drepper.
403 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
405 * SHA-256 and SHA-512 based password encryption.
406 Implemented by Ulrich Drepper.
408 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
409 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
412 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
413 Implemented by Ulrich Drepper.
417 * The following bugs are resolved with this release:
419 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
420 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
421 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
422 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
423 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
424 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
425 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
428 * New Linux interfaces: epoll_pwait, sched_getcpu.
430 * New generic interfaces: strerror_l.
432 * nscd can now cache the services database. Implemented by Ulrich Drepper.
436 * The following bugs are resolved with this release:
438 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
439 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
440 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
441 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
442 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
443 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
444 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
445 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
446 3225, 3251, 3252, 3253, 3273
448 * For Linux, the sorting of addresses returned by getaddrinfo now also
449 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
450 Implemented by Ulrich Drepper.
452 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
453 Implemented by Ulrich Drepper.
455 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
457 * New iconv module for MIK. Contributed by Alexander Shopov.
459 * For sites with broken group and/or passwd database, the auto-propagate
460 option of nscd can prevent creating ID lookup entries from the results
461 of a name lookup and vice versa. This usually is no problem but some
462 site might have problems with the default behavior.
463 Implemented by Ulrich Drepper.
465 * Iterating over entire database in NIS can be slow. With the
466 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
467 to trade time for memory. The entire database will be read at once.
468 Implemented by Ulrich Drepper.
470 * The interfaces introduced in RFC 3542 have been implemented by
473 * Support for the new ELF hash table format was added by Ulrich Drepper.
475 * Support for priority inheritance mutexes added by Jakub Jelinek and
478 * Support for priority protected mutexes added by Jakub Jelinek.
480 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
481 or_IN, csb_PL, fy_NL, sr_ME.
485 * More overflow detection functions.
487 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
488 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
490 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
491 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
492 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
493 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
494 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
495 by Masahide Washizawa.
497 * It is now possible to install audit libraries for the dynamic linker using
498 LD_AUDIT. Implemented by Ulrich Drepper.
500 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
501 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
502 For a libc and libpthread that works well on Linux 2.4 kernels, we
503 recommend using the stable 2.3 branch.
505 * The new function open_wmemstream acts like open_memstream,
506 but uses a wchar_t wide character buffer.
508 * The new function ppoll is an improved version of poll, similar to pselect.
510 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
511 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
512 renameat, unlinkat, linkat, symlinkat, readlinkat.
514 * New Linux kernel system calls: unshare,
515 inotify_init, inotify_add_watch, inotify_rm_watch.
517 * The euidaccess function is now also known by the alias eaccess,
518 for compatibility with some other systems.
520 * Timezone data updated to 2006b version.
524 * The following bugs are resolved with this release:
526 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
527 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
528 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
529 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
530 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
531 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
533 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
535 * As of this release, GCC 4 can be used to compile the C Library.
537 * Timezone data updated to 2005m version.
541 * The following bugs are resolved with this release:
543 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
544 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
545 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
546 777, 787, 821, 822, 823, 825
548 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
552 * Support for RFC 3678. Real implementations exist only for Linux so far.
553 Implemented by Ulrich Drepper.
555 * nscd can now cache entries persistently. Expiring entries are reloaded.
556 For speedups the cache can be shared in memory with client processes.
557 Implemented by Ulrich Drepper.
559 * nscd can now perform SELinux checks.
560 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
562 * getaddrinfo queries are now cached. Canonical name lookup is performed
564 Implemented by Ulrich Drepper.
566 * The nothrow function attribute is used when headers are used by gcc when
567 compiling C code. This can avoid significant amounts of exception
570 * The malloc functions perform more error checking and are stricter when
571 it comes to reacting on errors. The default action is to terminate
572 the process after showing an error message. Implemented by Ulrich Drepper.
574 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
575 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
577 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
578 namespaces using the new function dlmopen(). This feature is of course,
579 like most other dynamic loading functionality, not available in statically
580 linked applications. Implemented by Ulrich Drepper.
582 * Low-overhead boundary checking variants of string and some stdio functions
583 were added. These are to be used in conjunction with a gcc patch by
584 Jakub Jelinek which adds calls to these functions if possible.
585 Implemented by Jakub Jelinek and Ulrich Drepper.
587 * Old code for several operating systems and machine architectures that
588 have not been in working condition in a long time have been removed from
589 the main source tree maintained by the GNU C Library's maintainers.
590 These files are now reside in the separate `ports' source module
591 that is usable as an add-on when building the library.
595 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
596 interrogate the dynamic linker, compatible with the Solaris interface.
598 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
599 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
601 * getifaddrs now uses the netlink interface on Linux to get its information.
602 Implemented by Thorsten Kukuk.
604 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
605 Implemented by Ulrich Drepper.
607 * support for non-executable stacks on x86 has been added. Changes mostly
610 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
613 * getaddrinfo now performs destination address selection according to
618 * Thread-safe interfaces for many functions that access locale data
619 were added in version 2.3, but these features were omitted from NEWS.
620 Many functions have variants with an `_l' suffix that take a `locale_t'
621 object as a parameter rather than consulting the current locale.
622 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
623 create and maintain `locale_t' objects. Additionally, the new function
624 `uselocale' sets "the current locale" (as used by functions not so
625 parameterized) set for an individual thread. These features were added
626 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
628 * The functions getresuid, getresgid, setresuid, and setresgid, which
629 have long been available on Linux, are now declared in <unistd.h>
630 and are now also available on the Hurd.
632 * ELF thread-local storage support (TLS) now works on x86-64.
634 * The new dynamic string token $LIB is expanded in shared library names.
635 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
637 * Aldy Hernandez contributed complete software floating point support for
638 PowerPC machines with no FPU.
640 * fexecve is implemented on Linux.
642 * The `btowc' function should work at least twice as fast due to
643 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
645 * With approriate thread add-ons cancelable functions are now implemented
646 in libc.so as well. No need to call the function in libpthread. This
647 change allowed to finally disable the incorrect and expensive handling
648 of weak definition in ld.so.
650 * Yet more PLT entries in libc.so have been removed. We finally arrived
651 at the bare minimum. Startup times improved appropriately.
653 * Support for the new Linux/x86 system call interface was added. The
654 AT_SYSINFO auxiliary vector entry is recognized and handled.
658 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
661 * iconv (the program and the interface) now accepts empty names (excluding
662 options like //TRANSLIT) to mean "use charset of current locale".
664 * localedef can now transliterate characters in strings which are not in
665 the provided charmap. The information from the input locale is used.
667 * Prelinking support was added for ELF targets. This requires additional
668 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
670 * Read-only stdio streams now use mmap to speed up operation by eliminating
671 copying and buffer underflows. To use add 'm' to the mode string of
672 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
674 * The malloc functions were completely rewritten by Wolfram Gloger based
675 on Doug Lea's malloc-2.7.0.c.
677 * Isamu Hasegawa contributed a completely new and POSIX-conformant
678 implementation of regex.
680 * Bruno Haible upgraded the iconv and locale implementation to support
683 * Contents of the LC_* and LANG environment variables in the CEN style are
684 not recognized anymore. It never was used. Change by Ulrich Drepper.
686 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
687 thread-local storage (TLS) ABI on some platforms.
688 Changes by Ulrich Drepper. SH support by Kaz Kojima.
690 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
691 EUC-JISX0213, and TSCII.
693 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
694 BSD-compatible interface for getting all network interface addresses.
695 Implementation for IPv4 by Roland McGrath.
697 * Loading of locale data is faster due to the introduction of a locale
698 archive. Implemented by Roland McGrath and Ulrich Drepper.
700 * Startup times are significantly reduced by not using exported functions
701 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
704 * Steven Munroe contributed a port to PowerPC64/Linux.
708 * The Hurd now uses the GNU libio implementation of stdio rather than the
709 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
711 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
712 with the same behavior as the Linux system call of the same name.
716 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
717 128-bit long double format.
719 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
720 IBM1161, and IBM1162 charsets.
722 * Andreas Jaeger contributed a port to x86-64/Linux.
724 * Peter Bruin contributed a port to PowerPC/Hurd.
726 * libc functions using I/O streams now can handle wide-oriented streams
729 * optimizations in the dynamic linker. Binaries created by recent binutils
730 versions start up quicker due to reduced time spent on relocations.
732 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
736 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
737 asinh, atanh, j0 for the 128-bit long double format.
739 * Bruno Haible updated all the code handling Unicode in some form to
742 * Speed of regex for single-byte locales is back to previous levels.
743 Patch by Isamu Hasegawa.
745 * Alpha, SPARC, and IA-64 now also using floating stacks.
747 * Startup time of internationalized applications greatly improved through
748 iconv cache. Use iconvconfig to generate the cache file.
749 Contributed by Ulrich Drepper.
751 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
752 severe performance problems. Patch by David Mosberger.
754 * The Hurd port got a lot more functionality like AIO, various stdio
755 extensions, etc. Mainly done by Roland McGrath.
757 * mtrace can now lookup symbols in shared libraries.
761 * Intel's IA-64 math library is largely integrated. It provides fast and
762 accurate implementatations for most basic and standard math functions
763 in float, double, and long double format.
765 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
766 and asin for the 96-bit long double format and asin, log, tan for the
767 128-bit long double format.
769 * The beginning of a last-bit accurate math library by IBM Haifa were added.
770 The basic double functions exist today. Contributed by Abraham Ziv
771 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
772 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
774 * An asynchronous name lookup library was added. The interface is designed
775 after POSIX AIO. The proposal was circulated beforehand to get comments.
776 No negative ones came in. Implemented by Ulrich Drepper.
778 * Port to S390/64bit contributed by Martin Schwidefsky
779 <schwidefsky@de.ibm.com>.
781 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
782 of functions for Linux/IA-64.
784 * The RPC code is now thread safe. Threads can now use the same service
785 of different services at the same time. Patch by Eric Norum
786 <eric.norum@usask.ca> with some help by Ulrich Drepper.
788 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
789 family of functions for Linux/S390.
791 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
792 of functions for Linux/x86.
794 * Port to Linux/CRIS contributed by Axis Communications.
798 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
799 we can now check for namespace violations and missing declarations. The
800 result is that almost all headers are now Unix-compliant (as defined in
801 the upcoming XPG6). The negative side is that some programs might need
802 corrections, too, if they depend on the incorrect form of the headers in
803 previous versions which defined too many symbols and included too many
806 * regex now handles multibyte character sets correctly.
807 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
809 * iconv (the program) does now conform to the upcoming XPG6 and handles
810 charmaps. Instead of the charset names the path of charmaps can be
811 provided and the conversion happens based on this data.
812 Contributed by Ulrich Drepper.
814 * The locale program now provides detailed information about the installed
819 only lists the names of the supported locales
823 provides details such as country, language, and codeset name.
824 Contributed by Ulrich Drepper.
828 * The gencat program now parses the input file according to the charset
829 selected by the LC_CTYPE category. This is important for stateful
830 character sets. To make generating catalogs easier there is a way
831 to overwrite the charset selected by the locale: before the first
832 message or $ quote line the catalog can contain a line like
836 to select the charset (ISO-8859-2 in this case).
838 Implemented by Shinya Hanataka and Ulrich Drepper.
840 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
841 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
842 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
844 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
845 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
847 * The LANGUAGE environment variable is now ignored unless the locale is
848 changed from the default "C" locale.
850 * The usual bug fixes.
854 * Greg McGary added runtime support for bounds checking using gcc's
855 new -fbounded-pointers option. ix86 target is complete. PowerPC
858 * Thorsten Kukuk added secure mode support to nscd.
860 * The Berkeley db libraries have been removed.
862 Related, the nss_db module is now in a separate package since it
863 obviously requires a database library being available.
865 * Wide character I/O streams implemented by Ulrich Drepper.
867 * Functions from the extended socket API added by Ulrich Drepper.
869 * Functions feenableexcept and fedisableexcept to control the
870 behaviour of individual exceptions have been added by Andreas Jaeger.
872 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
874 * The resolver code has been updated from bind 8.2.3-T5B which supports
875 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
878 This change could in some situations effect backward compatibility. Since
879 now `_res' is a thread-local instead of a global variable, modifying it
880 in one thread does not have any effect in other threads.
882 The resolver library was also extended to allow IPv6 as the transport
883 protocol for the requests. This work was done by Stig Venaas.
885 * Compatibility code for K&R C compilers has been removed from the
886 header files. A ISO C compiler is needed to use the library
887 (conforming to either C89 or C99 standard).
889 * Complete rewrite of the localedef program to support multibyte character
890 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
891 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
892 Implemented by Ulrich Drepper.
894 Bruno Haible significantly improved the generation and use of the data
895 structures for the wide character tables.
897 * Plural handling in gettext implemented by Ulrich Drepper.
899 * The utmp daemon has been removed.
901 * The port to MIPS-Linux has been finished by Andreas Jaeger.
903 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
906 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
908 * POSIX barriers implemented by Kaz Kylheku.
910 * POSIX spawn function family implemented by Ulrich Drepper.
912 * POSIX spinlocks are now available.
914 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
916 * the configure option --enable-kernel=X.Y.Z allows to strip out
917 compatibility for kernel versions before X.Y.Z. This is currently only
918 implemented for Linux.
920 * the sockaddr_in6 structure changed. The IPv6 working group added a new
921 field sin6_scope_id. This means that all programs using IPv6 should be
922 recompiled. Don't expect binary compatibility with previous glibc
925 * various conversion modules for IBM character sets contributed by
928 * IA-64 port by Jes Sorensen and HJ Lu.
930 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
931 Compiling the GNU C Library for Linux/ia64
932 ******************************************
934 Please refer to the file INSTALL in the same directory as you found
935 this file for general information about configuring and compiling
938 For general inquiries about glibc under Linux/ia64 please use the
939 following mailing list linux-ia64@linuxia64.org or one of the relevant
942 Recommended Tools for Compilation
943 =================================
945 In order for glibc-2.2 to build correctly on the ia64 you need at
946 least the following versions of the GNU tools (the :
948 * The Cygnus toolchain snapshot for the ia64 as of August 4
949 including the provided set of patches. It is however recommend
950 you use the October 24 toolchain snapshot or a more recent version.
952 OR alternatively you can try the following (the Cygnus toolchain is
953 the recommended solution):
955 * GCC and binutils, GAS and GNU LD out of CVS from
956 sources.redhat.com as of August 28, 2000 or later. The CVS tree
957 may require special patches to work properly on the ia64.
959 Configuring and compiling GNU Libc for Linux/ia64
960 =================================================
962 The library requires Linux kernel version 2.4.0-test4-000728 or
963 later to funtion properly. Besides that it support for debug libraries
964 is currently untested. Hence the following options
965 are required for configuring the library:
967 --disable-debug --enable-kernel=2.4.0
969 It is also important that you make sure the library picks up the
970 appropriate kernel header files, if you do not have recent enough
971 kernel headers in /usr/src/linux/include, you should use the
972 --with-headers=<path> option to specify the location.
974 As an example I personally use the following options to configure
979 --enable-kernel=2.4.0
983 --with-headers=/home/jes/linux/include
988 Jes Sorensen <jes@linuxcare.com>,
990 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1004 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1006 * New xdr functions are added; some rpc functions are now 64bit clean.
1008 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1010 * Fixed known incompatibilities with glibc 2.0.
1012 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1014 * Optimized a number of functions (especially the ELF dynamic loader).
1016 * Update timezone data files.
1018 * lots of charmaps corrections
1020 * some new locale definitions and charmaps
1025 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1026 conform to POSIX member type requirements. Symbol versions have been
1027 adjusted as needed within the library, and for direct use by applications,
1028 but there is potential for problems if third-party libraries use
1029 struct timeval as part of their interface. This does not present
1030 a problem for X and other "essential" system libraries.
1032 * An additional locale model to support C++ Standard Library locale
1033 model and probably more was implemented by Ulrich Drepper.
1035 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1038 * Miles Bader provided the `argp' function family to support hierachical
1039 command line argument parsing, layered on top of getopt.
1041 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1043 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1046 * scanf recognizes the %a and %A format for scanning floating point numbers.
1048 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1049 information and interfaces for the available integer types.
1051 * about 130 new math functions were added to implement the ISO C9x math
1054 * the new header <complex.h> contains definitions of the complex math
1055 functions from ISO C 9X.
1057 * the new header <tgmath.h> defines generic macros to use complex or
1058 real valued functions.
1060 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1062 * Andreas Jaeger provided a test suite for the math library.
1064 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1066 * Ulrich Drepper added character set conversion functions (iconv).
1068 * Optimized string functions have been added.
1070 * The localedata addon is now part of glibc.
1072 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1074 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1075 daemon for NSS (nscd).
1077 Missing a better place here are some numbers on improvements. Under
1078 Linux 2.1.125 un-tar-ing the kernel sources takes
1082 using local files 12.19s 6.88s 22.91s
1084 using NIS 13.92s 8.91s 26.34s
1086 using NIS & nscd 10.37s 7.34s 25.30s
1088 using NIS+ 27.57s 30.37s 640.46s
1090 using NIS+ & nscd 10.25s 7.83s 26.51s
1092 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1094 Keep in mind that non-namelookup related operations dominate above times.
1095 It was just a common complain that using NIS+ unpacking the kernel is
1098 [1] The old nscd implementation is not available anymore since it was
1099 distributed with glibc up to version 2.0.98 and thus is now replaced.
1101 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1103 * Mark Kettenis provided a Hesiod NSS module.
1105 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1106 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1108 * rcmd can now handle netgroups (Dick Streefland).
1110 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1113 * Support for the IPv6 protocol has been added to the socket API, as per the
1114 latest draft standards.
1116 * Support for Linux 2.2 has been added.
1118 * Interface changes relative to the latest 2.0.x release:
1119 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1120 addseverity NEW: Unix98
1121 alphasort64 NEW: LFS
1122 argp_err_exit_status NEW: argp, GNU ext
1123 argp_error NEW: argp, GNU ext
1124 argp_failure NEW: argp, GNU ext
1125 argp_help NEW: argp, GNU ext
1126 argp_parse NEW: argp, GNU ext
1127 argp_program_bug_address NEW: argp, GNU ext
1128 argp_program_version NEW: argp, GNU ext
1129 argp_program_version_hook NEW: argp, GNU ext
1130 argp_state_help NEW: argp, GNU ext
1131 argp_usage NEW: argp, GNU ext
1132 authdes_create NEW: Secure RPC
1133 authdes_getucred NEW: Secure RPC
1134 authdes_pk_create NEW: Secure RPC
1135 backtrace NEW: GNU ext.
1136 backtrace_symbols NEW: GNU ext.
1137 backtrace_symbols_fd NEW: GNU ext.
1139 cacosf NEW: ISO C 9x
1140 cacosh NEW: ISO C 9x
1141 cacoshf NEW: ISO C 9x
1142 cacoshl NEW: ISO C 9x
1143 cacosl NEW: ISO C 9x
1150 casinf NEW: ISO C 9x
1151 casinh NEW: ISO C 9x
1152 casinhf NEW: ISO C 9x
1153 casinhl NEW: ISO C 9x
1154 casinl NEW: ISO C 9x
1156 catanf NEW: ISO C 9x
1157 catanh NEW: ISO C 9x
1158 catanhf NEW: ISO C 9x
1159 catanhl NEW: ISO C 9x
1160 catanl NEW: ISO C 9x
1161 cbc_crypt NEW: Secure RPC
1165 ccoshf NEW: ISO C 9x
1166 ccoshl NEW: ISO C 9x
1172 cimagf NEW: ISO C 9x
1173 cimagl NEW: ISO C 9x
1174 clearerr_locked REMOVED
1175 clntunix_create NEW: sunrpc ext
1177 clog10 NEW: ISO C 9x
1178 clog10f NEW: ISO C 9x
1179 clog10l NEW: ISO C 9x
1189 cprojf NEW: ISO C 9x
1190 cprojl NEW: ISO C 9x
1192 crealf NEW: ISO C 9x
1193 creall NEW: ISO C 9x
1198 csinhf NEW: ISO C 9x
1199 csinhl NEW: ISO C 9x
1202 csqrtf NEW: ISO C 9x
1203 csqrtl NEW: ISO C 9x
1207 ctanhf NEW: ISO C 9x
1208 ctanhl NEW: ISO C 9x
1210 des_setparity NEW: Secure RPC
1211 ecb_crypt NEW: Secure RPC
1212 endutxent NEW: Unix98
1214 exp10f NEW: ISO C 9x
1215 exp10l NEW: ISO C 9x
1219 fattach NEW: STREAMS
1220 fdetach NEW: STREAMS
1224 feclearexcept NEW: ISO C 9x
1225 fegetenv NEW: ISO C 9x
1226 fegetexceptflag NEW: ISO C 9x
1227 fegetround NEW: ISO C 9x
1228 feholdexcept NEW: ISO C 9x
1230 feraiseexcept NEW: ISO C 9x
1231 ferror_locked REMOVED
1232 fesetenv NEW: ISO C 9x
1233 fesetexceptflag NEW: ISO C 9x
1234 fesetround NEW: ISO C 9x
1235 fetestexcept NEW: ISO C 9x
1236 feupdateenv NEW: ISO C 9x
1237 fflush_locked REMOVED
1241 fgets_unlocked NEW: GNU ext.
1242 fileno_locked REMOVED
1254 fputc_locked REMOVED
1255 fputs_unlocked NEW: GNU ext.
1256 fread_unlocked NEW: GNU ext.
1261 fstatvfs NEW: Unix98
1265 ftruncate64 NEW: LFS
1267 fwrite_unlocked NEW: GNU ext.
1268 gai_strerror NEW: IPv6
1272 getchar_locked REMOVED
1274 getdate_err NEW: Unix98
1275 getdate_r NEW: GNU ext.
1277 getnameinfo NEW: IPv6
1278 getnetname NEW: Secure RPC
1279 getpmsg NEW: STREAMS
1280 getpt NEW: Unix98 PTY
1281 getrlimit64 NEW: LFS
1282 getutxent NEW: Unix98
1283 getutxid NEW: Unix98
1284 getutxline NEW: Unix98
1285 glob64 NEW: GNU ext.
1286 globfree64 NEW: GNU ext.
1287 gnu_get_libc_release NEW: GNU ext.
1288 gnu_get_libc_version NEW: GNU ext.
1289 grantpt NEW: Unix98 PTY
1290 host2netname NEW: Secure RPC
1292 iconv_close NEW: iconv
1293 iconv_open NEW: iconv
1294 if_freenameindex NEW: IPv6
1295 if_indextoname NEW: IPv6
1296 if_nameindex NEW: IPv6
1297 if_nametoindex NEW: IPv6
1298 in6addr_any NEW: IPv6
1299 in6addr_loopback NEW: IPv6
1300 inet6_isipv4mapped NEW: IPv6
1301 isastream NEW: STREAMS
1302 iswblank NEW: GNU ext.
1303 key_decryptsession NEW: Secure RPC
1304 key_decryptsession_pk NEW: Secure RPC
1305 key_encryptsession NEW: Secure RPC
1306 key_encryptsession_pk NEW: Secure RPC
1307 key_gendes NEW: Secure RPC
1308 key_get_conv NEW: Secure RPC
1309 key_secretkey_is_set NEW: Secure RPC
1310 key_setnet NEW: Secure RPC
1311 key_setsecret NEW: Secure RPC
1312 llrint NEW: ISO C 9x
1313 llrintf NEW: ISO C 9x
1314 llrintl NEW: ISO C 9x
1315 llround NEW: ISO C 9x
1316 llroundf NEW: ISO C 9x
1317 llroundl NEW: ISO C 9x
1322 lrintf NEW: ISO C 9x
1323 lrintl NEW: ISO C 9x
1324 lround NEW: ISO C 9x
1325 lroundf NEW: ISO C 9x
1326 lroundl NEW: ISO C 9x
1328 makecontext NEW: Unix98
1329 mempcpy NEW: GNU ext.
1332 modify_ldt NEW: kernel
1336 nearbyint NEW: ISO C 9x
1337 nearbyintf NEW: ISO C 9x
1338 nearbyintl NEW: ISO C 9x
1339 netname2host NEW: Secure RPC
1340 netname2user NEW: Secure RPC
1341 nexttoward NEW: ISO C 9x
1342 nexttowardf NEW: ISO C 9x
1343 nexttowardl NEW: ISO C 9x
1347 passwd2des NEW: Secure RPC
1349 pow10f NEW: GNU ext.
1350 pow10l NEW: GNU ext.
1353 printf_size NEW: GNU ext.
1354 printf_size_info NEW: GNU ext.
1355 profil_counter REMOVED
1356 pthread_mutexattr_getkind_np REPLACED
1357 pthread_mutexattr_setkind_np REPLACED
1358 ptsname NEW: Unix98 PTY
1359 ptsname_r NEW: Unix98 PTY
1361 putchar_locked REMOVED
1362 putgrent NEW: GNU ext.
1364 putpmsg NEW: STREAMS
1365 pututxline NEW: Unix98
1369 readdir64_r NEW: LFS
1370 remquo NEW: ISO C 9x
1371 remquof NEW: ISO C 9x
1372 remquol NEW: ISO C 9x
1374 roundf NEW: ISO C 9x
1375 roundl NEW: ISO C 9x
1377 scalbln NEW: ISO C 9x
1378 scalblnf NEW: ISO C 9x
1379 scalblnl NEW: ISO C 9x
1381 sendfile NEW: kernel
1382 setcontext NEW: Unix98
1383 setrlimit64 NEW: LFS
1384 setutxent NEW: Unix98
1386 sigignore NEW: Unix98
1387 sigqueue NEW: POSIX.1b
1388 sigrelse NEW: Unix98
1389 sigset NEW: POSIX.1b
1390 sigtimedwait NEW: POSIX.1b
1391 sigwaitinfo NEW: POSIX.1b
1392 sincos NEW: GNU ext.
1393 sincosf NEW: GNU ext.
1394 sincosl NEW: GNU ext.
1398 strcasestr NEW: GNU ext.
1399 strtoimax NEW: ISO C 9x
1400 strtoumax NEW: ISO C 9x
1401 strverscmp NEW: GNU ext.
1402 svcauthdes_stats NEW: Secure RPC
1403 svcunix_create NEW: sunrpc etx
1404 svcunixfd_create NEW: sunrpc ext
1405 swapcontext NEW: Unix98
1406 tcgetsid NEW: Unix98 PTY
1407 tdestroy NEW: GNU ext.
1408 tgamma NEW: ISO C 9x
1409 tgammaf NEW: ISO C 9x
1410 tgammal NEW: ISO C 9x
1414 truncf NEW: ISO C 9x
1415 truncl NEW: ISO C 9x
1417 unlockpt NEW: Unix98 PTY
1418 updwtmpx NEW: Unix98
1419 user2netname NEW: Secure RPC
1420 utmpxname NEW: Unix98
1421 versionsort NEW: GNU ext.
1422 versionsort64 NEW: GNU ext.
1424 wcscasecmp NEW: GNU ext.
1425 wcsncasecmp NEW: GNU ext.
1426 wcsnlen NEW: GNU ext.
1427 wcstoimax NEW: ISO C 9x
1428 wcstoll NEW: ISO C 9x
1429 wcstoull NEW: ISO C 9x
1430 wcstoumax NEW: ISO C 9x
1432 wordexp NEW: POSIX.2
1433 wordfree NEW: POSIX.2
1434 write_profiling REMOVED
1435 xdecrypt NEW: Secure RPC
1436 xdr_authdes_cred NEW: Secure RPC
1437 xdr_authdes_verf NEW: Secure RPC
1438 xdr_cryptkeyarg NEW: Secure RPC
1439 xdr_cryptkeyarg2 NEW: Secure RPC
1440 xdr_cryptkeyres NEW: Secure RPC
1441 xdr_getcredres NEW: Secure RPC
1442 xdr_key_netstarg NEW: Secure RPC
1443 xdr_key_netstres NEW: Secure RPC
1444 xdr_keybuf NEW: Secure RPC
1445 xdr_keystatus NEW: Secure RPC
1446 xdr_netnamestr NEW: Secure RPC
1447 xdr_sizeof NEW: Secure RPC
1448 xdr_unixcred NEW: sunrpc ext
1449 xencrypt NEW: Secure RPC
1450 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1461 * inet_ntoa is thread-safe
1463 * updwtmp is moved from libutil to libc
1465 * rewrite of cbrt function
1467 * update of timezone data
1481 * add atoll function
1483 * fix complex problems in Berkeley DB code
1485 * fix math functions
1489 * fixed lots of header problems (especially Linux/GNU specific)
1491 * dynamic loader preserves all registers
1493 * Roland McGrath provided support for handling of auxiliary objects in
1494 the ELF dynamic loader.
1496 * support for parallel builds is improved
1500 * GNU extensions are no longer declared by default. To enable them you
1501 must define the macro `_GNU_SOURCE' in your program or compile with
1504 * The library has changed from using GNU ld symbol aliases to using weak
1505 symbols where available. The ELF object file format supports weak
1506 symbols; GNU ld also supports weak symbols in the a.out format. (There
1507 is also now support for other GNU ld extensions in ELF. Use the
1508 `--with-elf' option to configure to indicate you have ELF, and
1509 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1510 of many files which contained only symbol aliases, reducing the size of
1511 the source and the compiled library; many other files were renamed to
1512 less cryptic names previously occupied by the symbol alias files.
1513 There is a new header file <elf.h> for programs which operate on
1514 files in the ELF format.
1516 * Converted to Autoconf version 2, so `configure' has more options.
1517 Run `configure --help' to see the details.
1519 * The library can now be configured to build profiling, highly-optimized
1520 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1521 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1522 `configure' enable building these extra libraries. The shared library is
1523 built by default when using both ELF and GNU ld. When shared libraries
1524 are enabled, the new library `-ldl' is available for arbitrary run-time
1525 loading of shared objects; its interface is defined in <dlfcn.h>. The
1526 new header file <link.h> gives access to the internals of the run-time
1527 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1528 application of same name on other systems and it provides information
1529 about dynamically linked binaries.
1531 * The C library now provides the run-time support code for profiling
1532 executables compiled with `-pg'. Programs can control the profiling code
1533 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1534 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1535 the support for this file format was contributed by David Mosberger-Tang.
1537 * The math code has been replaced with a math library based on fdlibm from
1538 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1539 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1540 functions. The math functions now reside in a separate library, so
1541 programs using them will need to use `-lm' their linking commands.
1543 * John C. Bowman contributed optimized ix87 assembler inline functions.
1545 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1546 mechanism similar to that found in Solaris 2. This is now used for the
1547 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1548 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1549 file controls what services are used for each individual database. This
1550 works by loading shared libraries with names specified in `nsswitch.conf',
1551 so service modules can be changed or added at any time without even
1552 relinking any program. Currently there are the file, db, and NIS based
1553 NSS services available.
1555 * The new functions `strtoq' and `strtouq' parse integer values from
1556 strings, like `strtol' and `strtoul', but they return `long long int' and
1557 `unsigned long long int' values, respectively (64-bit quantities).
1559 * The new functions `strtof' and `strtold' parse floating-point values from
1560 strings, like `strtod', but they return `float' and `long double' values,
1561 respectively (on some machines `double' and `long double' are the same).
1563 * Ulrich Drepper has contributed new implementations of the floating-point
1564 printing and reading code used in the `printf' family of functions and
1565 `strtod', `strtof', and `strtold'. These new functions are perfectly
1566 accurate, and much faster than the old ones.
1568 * The implementation of the POSIX locale model was completely rewritten by
1569 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1570 to compile the POSIX locale definition.
1572 * The former dummy implementations of the strcoll and strxfrm function are
1573 now replaced by fully functional code contributed by Ulrich Drepper. The
1574 collation information comes from the POSIX locale definitions.
1576 * The new header <langinfo.h> defines an interface for accessing
1577 various locale-dependent data (using the locale chosen with `setlocale').
1579 * Ulrich Drepper has contributed a new suite of functions for operation on
1580 wide-character and multibyte-character strings, in <wchar.h>;
1581 and classification and case conversion of wide characters, in <wctype.h>.
1582 These new functions are conforming to the ISO C, Amendement 1 specification.
1584 * There is now a second implementation of the standard I/O library available.
1585 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1586 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1588 * You can now use positional parameter specifications in format strings
1589 for the `printf' and `scanf' families of functions. For example,
1590 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1591 ``Number 6, Mr Jones''. This is mainly useful when providing different
1592 format strings for different languages, whose grammars may dictate
1593 different orderings of the values being printed. To support this
1594 feature, the interface for `register_printf_handler' has changed; see
1595 the header file <printf.h> for details.
1597 * The `printf' and `scanf' families of functions now understand a new
1598 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1599 to group numbers as indicated by the locale; for `scanf' and friends, this
1600 says to accept as valid only a number with all the proper grouping
1601 separators in the right places. In the default "C" locale, numbers are
1602 not grouped; but locales for specific countries will define the usual
1603 conventions (i.e. separate thousands with `,' in the US locale).
1605 * The pgrp functions have been regularized, slightly incompatibly but much
1606 less confusingly. The core functions are now `getpgid' and `setpgid',
1607 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1608 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1609 provided for compatibility. There is no longer an incompatible `getpgrp'
1610 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1612 * The new header file <fts.h> and suite of functions simplify programs that
1613 operate on directory trees. This code comes from 4.4 BSD.
1615 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1616 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1617 NSS scheme used in glibc.
1619 * There is a new malloc debugging hook `__memalign_hook'.
1621 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1622 `unsigned int' in <sys/types.h>. These are for compatibility only and
1623 their use is discouraged.
1625 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1626 done differently, so that it works even without GNU ld.
1628 * New function `euidaccess' checks allowed access to a file like `access',
1629 but using the effective IDs instead of the real IDs.
1631 * The time zone data files have been updated for the latest and greatest
1632 local time conventions of the countries of the world.
1634 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1637 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1638 for formatting floating-point numbers. They are provided only for
1639 compatibility; new programs should use `sprintf' instead. There are
1640 also equivalent function for the `long double' floating-point type and
1641 all functions also exist in a reentrant form.
1643 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1644 functions for maintaining the login-record files (primarily of use to
1645 system programs such as `login'), and convenient functions for
1646 allocating and initializing a pseudo-terminal (pty) device.
1648 * Ulrich Drepper has contributed new support for System V style
1649 shared memory and IPC on systems that support it.
1651 * Ulrich Drepper has contributed several miscellaneous new functions found
1652 in System V: The `hsearch' family of functions provide an effective
1653 implementation of hash tables; `a64l' and `l64a' provide a very simple
1654 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1657 * Ulrich Drepper has contributed new reentrant counterparts for the
1658 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1660 * Ulrich Drepper has contributed new, highly-optimized versions of several
1661 string functions for the i486/Pentium family of processors.
1663 * Ulrich Drepper has updated the Linux-specific code, based largely
1664 on work done in Hongjiu Lu's version of GNU libc for Linux.
1665 The GNU library now supports Linux versions 2.0.10 and later,
1666 using the ELF object file format (i[3456]86-*-linux).
1668 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1670 * David Mosberger-Tang and Richard Henderson have ported the C library
1671 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1672 dynamic linking support for ELF/Alpha.
1674 * Richard Henderson contributed several Alpha optimized assembler function
1675 for arithmetic and string handling.
1677 * Ulrich Drepper has contributed a new set of message catalog functions to
1678 support multiple languages using the <libintl.h> interface, for use with
1679 his new package GNU gettext. Translation volunteers have contributed
1680 catalogs of the library's messages in Spanish, German, and Korean.
1682 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1683 program and the `catgets' function for reading the catalog files it
1684 creates. (The <libintl.h> interface is preferred; we include the
1685 <nl_types.h> interface using `catgets' only for source compatibility with
1686 programs already written to use it.)
1688 * New header file <values.h> gives SVID-compatible names for <limits.h>
1691 * Various new macros, declarations, and small header files for compatibility
1694 * New function `group_member' is a convenient way to check if a process has
1695 a given effective group ID.
1697 * When using GCC 2.7 and later, the socket functions are now declared in a
1698 special way so that passing an argument of type `struct sockaddr_in *',
1699 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1700 `struct sockaddr *' type, does not generate a type-clash warning.
1702 * New function `error' declared in header file <error.h> is a convenient
1703 function for printing error messages and optionally exiting; this is the
1704 canonical function used in GNU programs. The new functions `err', `warn',
1705 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1706 doing the same thing.
1708 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1709 POSIX.2 `glob' function to do ~ and {...} expansion.
1711 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1712 `clearenv' which is used in POSIX.9 is also available.
1714 * New function `getsid' returns session ID number on systems that support it.
1716 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1717 files <db.h> and <mpool.h> provide a rich set of functions for several
1718 types of simple databases stored in memory and in files, and <ndbm.h> is
1719 an old `ndbm'-compatible interface using the `db' functions. Link with
1720 `-ldb' to get these functions.
1722 * New macro `strdupa' copies a string like `strdup', but uses local stack
1723 space from `alloca' instead of dynamic heap space from `malloc'.
1725 * New function `strnlen' is like `strlen' but searches only a given maximum
1726 number of characters for the null terminator. `stpncpy', `strndup' and
1727 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1730 * New function `statfs' in header <sys/statfs.h>.
1732 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1733 provide convenient functions for operating on blocks of null-terminated
1736 * A new suite of functions in <utmp.h> handle all the details of reading
1737 and writing the utmp file.
1739 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1742 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1743 completely POSIX compliant and also implemented the extended functionality
1744 to handle alternate digit representation and alternate era date formats.
1746 * Ulrich Drepper provided an implementation of the `strptime' function
1747 defined in XPG4.2 which transforms a string into a `struct tm' value.
1749 * Paul Eggert provided the tzselect shell script as part of the timezone
1750 code. The shell script makes it easy to select the correct timezone
1753 * The implementation of the malloc family of functions is completely replaced
1754 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1755 The implementation uses the mmap function (if available) and it is
1756 optimized for the use in multi threaded programs.
1758 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1759 functions. This new functionality is usable by specifying a special
1760 salt string and it is compatible with implementation on *BSD systems.
1762 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1763 `getsubopt' to handle second level command line options, `bsd_signal'
1764 to access BSD style `signal' functionality, the obsolete `regexp' style
1767 * the `lchown' function is available on system which support this
1770 * The implementation of the shadow password handling function was contributed
1773 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1775 * POSIX.1g support was added. The <sys/select.h> header is available,
1776 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1777 implementation of `getaddrinfo'.
1781 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1783 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1784 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1786 * The new function `daemon' from 4.4 BSD is useful for server programs that
1787 want to put themselves in the background.
1789 * Joel Sherrill has contributed support for several standalone boards that
1790 run without an operating system.
1792 * `printf', `scanf' and friends now accept a `q' type modifier for long
1793 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1795 * All of the code taken from BSD (notably most of the math and networking
1796 routines) has been updated from the BSD 4.4-Lite release.
1798 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1800 * The new functions `getdomainname' and `setdomainname' fetch or change the
1801 YP/NIS domain name. These are system calls which exist on systems which
1804 * The time zone data files have been updated for the latest international
1807 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1808 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1812 * The C library now includes support for Sun RPC, from Sun's free
1813 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1814 are included. (There is still no support for YP.)
1816 * Tom Quinn has contributed a port of the C library to SGI machines running
1817 Irix 4 (mips-sgi-irix4).
1819 * The new `lockf' function is a simplified interface to the locking
1820 facilities of `fcntl', included for compatibility.
1822 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1824 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1826 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1829 * The error message printed by `assert' for a failed assertion now includes
1830 the name of the program (if using GNU ld) and the name of the calling
1831 function (with versions of GCC that support this).
1833 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1835 * The library now includes the <sys/mman.h> header file and memory
1836 management functions `mmap', `munmap', `mprotect', `msync', and
1837 `madvise', on systems that support those facilities.
1839 * The interface for `mcheck' has changed slightly: the function called to
1840 abort the program when an allocation inconsistency is detected now takes
1841 an argument that indicates the type of failure. The new function
1842 `mprobe' lets you request a consistency check for a particular block at
1843 any time (checks are normally done only when you call `free' or `realloc'
1846 * It is now possible to easily cross-compile the C library, building on one
1847 system a library to run on another machine and/or operating system. All
1848 you need to do is set the variable `HOST_CC' in `configparms' to the
1849 native compiler for programs to run on the machine you are building on (a
1850 few generator programs are used on Unix systems); set `CC' to the
1853 * The new function `fexecve' (only implemented on the GNU system) executes
1854 a program file given a file descriptor already open on the file.
1858 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1859 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1861 * You can set the variable `libprefix' in `configparms' to specify a prefix
1862 to be prepended to installed library files; this makes it easy to install
1863 the GNU C library to be linked as `-lgnuc' or whatever.
1865 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1866 copies a limited number of characters from a string, and returns the
1867 address of the last character written.
1869 * You no longer need to check for whether the installed `stddef.h' is
1870 compatible with the GNU C library. configure now checks for you.
1872 * You can now define a per-stream `fileno' function to convert the
1873 stream's cookie into an integral file descriptor.
1875 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1876 allocates zero bytes of storage, and returns a unique pointer which
1877 you can pass to `realloc' or `free'. The behavior is undefined if
1878 you dereference this pointer.
1880 * The C library now runs on Sony NEWS m68k machines running either
1881 NewsOS 3 or NewsOS 4.
1883 * The new `syscall' function is a system-dependent primitive function
1884 for invoking system calls. It has the canonical behavior on Unix
1885 systems, including unreliable return values for some calls (such as
1886 `pipe', `fork' and `getppid').
1888 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1889 to `EAGAIN', which is the preferred name. On systems whose kernels
1890 use two distinct codes, the C library now translates EWOULDBLOCK to
1891 EAGAIN in every system call function.
1895 * The GNU C Library Reference Manual is now distributed with the library.
1896 `make dvi' will produce a DVI file of the printed manual.
1897 `make info' will produce Info files that you can read on line using C-h i
1898 in Emacs or the `info' program.
1899 Please send comments on the manual to bug-glibc-manual@gnu.org.
1901 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1903 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1905 * Jason Merrill has contributed a port to the Sequent Symmetry running
1906 Dynix version 3 (i386-sequent-dynix).
1908 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1909 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1911 * New function `memory_warnings' lets you arrange to get warnings when
1912 malloc is running out of memory to allocate, like Emacs gives you.
1914 * The C library now contains the relocating allocator used in Emacs 19 for
1915 its editing buffers. This allocator (ralloc) minimizes allocation
1916 overhead and fragmentation by moving allocated regions around whenever it
1917 needs to. You always refer to a ralloc'd region with a "handle" (a
1918 pointer to a pointer--an object of type `void **').
1920 * There is a new `printf' format: `%m' gives you the string corresponding
1921 to the error code in `errno'.
1923 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1924 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1925 pass, the `a' modifier says to fill in a `char **' you pass with a
1928 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1929 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1930 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1932 * `mkstemp' is a traditional Unix function to atomically create and open a
1933 uniquely-named temporary file.
1937 * The standard location for the file that says what the local timezone is
1938 has changed again. It is now `/usr/local/etc/localtime' (or more
1939 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1941 * The distribution no longer contains any files with names longer than 14
1944 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1945 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1947 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1951 * The configuration process has changed quite a bit. The `configure'
1952 script is now used just like the configuration scripts for other GNU
1953 packages. The `sysdeps' directory hierarchy is much rearranged.
1954 The file `INSTALL' explains the new scheme in detail.
1956 * The header files no longer need to be processed into ANSI C and
1957 traditional C versions. There is just one set of files to install, and
1958 it will work with ANSI or old C compilers (including `gcc -traditional').
1960 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1961 MIPS DECStation running Ultrix 4.
1963 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1964 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1965 made itself into a shared library.
1967 * Yet further improved support for the i386, running 4.3 BSD-like systems
1968 (such as Mach 3 with the Unix single-server), or System V.
1970 * New function `strncasecmp' to do case-insensitive string comparison
1971 with limited length.
1973 * New function `strsep' is a reentrant alternative to `strtok'.
1975 * New functions `scandir' and `alphasort' for searching directories.
1977 * New function `setenv' is a better interface to `putenv'.
1979 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1980 function for traversing a directory tree.
1982 * The GNU obstack package is now also part of the C library.
1983 The new function `open_obstack_stream' creates a stdio stream that
1984 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1985 formatted output directly to an obstack.
1987 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1988 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1990 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1992 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1993 things to your strings.
1995 * There are some new test programs: test-fseek, testmb, and testrand.
1997 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1998 These ports are not finished, but are a good starting place for really
1999 supporting those systems.
2001 * `/etc/localtime' is now the standard location for the file that says what
2002 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2003 This follows the general principle that `/etc' is the place for all local
2004 configuration files.
2006 * The C library header files now use `extern "C"' when used by the C++
2007 compiler, so the C library should now work with C++ code.
2009 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2010 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2013 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2014 function which uses the `merge sort' algorithm, and is said to be
2015 significantly faster than the old GNU `qsort' function. Merge sort is
2016 now the standard `qsort' function. The new algorithm can require a lot
2017 of temporary storage; so, the old sorting function is called when the
2018 required storage is not available.
2020 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2021 provides the Unix `crypt' function, plus some other entry points.
2023 * The code and header files taken from 4.4 BSD have been updated with the
2024 latest files released from Berkeley.
2026 ----------------------------------------------------------------------
2027 Copyright information:
2029 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2031 Permission is granted to anyone to make or distribute verbatim copies
2032 of this document as received, in any medium, provided that the
2033 copyright notice and this permission notice are preserved,
2034 thus giving the recipient permission to redistribute in turn.
2036 Permission is granted to distribute modified versions
2037 of this document, or of portions of it,
2038 under the above conditions, provided also that they
2039 carry prominent notices stating who last changed them.
2042 version-control: never
projects / platform / upstream / glibc.git / blob