1 GNU C Library NEWS -- history of user-visible changes. 2011-12-17
2 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sources.redhat.com/bugzilla/>
6 using `glibc' in the "product" field.
10 * The following bugs are resolved with this release:
12 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, 13484, 13506
17 * New program pldd to list loaded object of a process
18 Implemented by Ulrich Drepper.
20 * Add nss_db support back to glibc. No more dependency on Berkeley db
21 and support for initgroups lookups.
22 Implemented by Ulrich Drepper.
24 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
27 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
30 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
32 Contributed by Liubov Dmitrieva.
34 * Optimized strchr and strrchr for SSE on x86-32.
35 Contributed by Liubov Dmitrieva.
37 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
38 for x86-64 and x86-32.
39 Contributed by Liubov Dmitrieva.
41 * New interfaces: scandirat, scandirat64
42 Implemented by Ulrich Drepper.
44 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
45 Implemented by Ulrich Drepper.
47 * nscd now also caches the netgroup database.
48 Implemented by Ulrich Drepper.
50 * Integrate libm with gcc's -ffinite-math-only option.
51 Implemented by Ulrich Drepper.
53 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
54 to math functions. Implemented by Ulrich Drepper.
56 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
57 Implemented by Ulrich Drepper.
59 * New Linux interfaces: process_vm_readv, process_vm_writev
61 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
62 Implemented by Ulrich Drepper.
64 * Optimized nearbyint for PPC. Implemented by Adhemerval Zanella.
68 * The following bugs are resolved with this release:
70 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
71 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
72 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
73 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
74 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
75 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
76 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
77 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
78 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
79 12795, 12811, 12813, 12814, 12841
81 * The RPC implementation in libc is obsoleted. Old programs keep working
82 but new programs cannot be linked with the routines in libc anymore.
83 Programs in need of RPC functionality must be linked against TI-RPC.
84 The TI-RPC implementation is IPv6 enabled and there are other benefits.
86 Visible changes of this change include (obviously) the inability to link
87 programs using RPC functions without referencing the TI-RPC library and the
88 removal of the RPC headers from the glibc headers.
89 Implemented by Ulrich Drepper.
91 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
92 syncfs, setns, sendmmsg
94 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
95 yue_HK, lij_IT, mhr_RU
97 * New encodings: CP770, CP771, CP772, CP773, CP774
99 * New program sotruss to trace calls through PLTs
100 Implemented by Ulrich Drepper.
102 * The malloc hook implementation is marked deprecated and will be removed
103 from the default implementation in the next version. The design never
104 worked ever since the introduction of threads. Even programs which do
105 not create threads themselves can use multiple threads created internally.
109 * The following bugs are resolved with this release:
111 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
112 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
113 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
114 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
117 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
119 * POWER7 optimizations: memset, memcmp, strncmp
121 * New optimized string functions for x86-64: strnlen (SSE2),
122 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
123 Implemented by Ulrich Drepper.
127 * The following bugs are resolved with this release:
129 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
130 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
131 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
132 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
133 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
134 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
135 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
136 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
138 * New interfaces: pthread_getname_np, pthread_setname_np
140 * New Linux interface: recvmmsg
142 * STT_GNU_IFUNC implemented for Sparc by David Miller.
144 * The dynamic linker now recognizes supported ABI versions from the
145 EI_ABIVERSION field in the ELF header.
146 Implemented by Ulrich Drepper.
148 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
149 will not be used to fill in password fields in the passwd.byname replies.
150 Instead it is used to synthesize the shadow.byname table, should it be
151 missing. This is a useful mode in some installations involving Solaris.
152 Implemented by Ulrich Drepper.
154 * New locales: kok_IN, sq_MK, cv_RU
158 * The following bugs are resolved with this release:
160 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
161 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
162 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
163 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
164 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
165 10789, 10817, 10823, 10840, 10847
167 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
169 Implemented by Ulrich Drepper.
171 * Checking version of longjmp added that fails if an uninitialized stack
172 frame would be created. Implemented by Ulrich Drepper.
174 * STT_GNU_IFUNC is now supported in static executables.
175 Implemented by H.J. Lu.
177 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
179 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
180 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
181 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
182 Contributed by H.J. Lu.
184 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
185 Implemented by Ulrich Drepper.
187 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
189 Contributed by H.J. Lu.
191 * Support for fma instruction in AVX on x86-64.
192 Implemented by H.J. Lu and Ulrich Drepper.
194 * AVX support in x86-64 auditing support in ld.so.
195 Implemented by H.J. Lu.
197 * STB_GNU_UNIQUE support added.
198 Implemented by Ulrich Drepper.
200 * Implement second fallback mode for optimized DNS lookup for even more
201 broken environments. If two requests from the same port are not
202 handled correctly close the socket and open a new one before sending
203 the second request. The 'single-request-reopen' option in /etc/resolv.conf
204 can be used to select this mode right away, instead of rediscovering the
205 necessity is every process again.
206 Implemented by Ulrich Drepper.
208 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
209 Implemented by Adam Tkac.
211 * Optimized iconv conversions for S390x.
212 Implemented by Andreas Krebbel.
214 * Using condvars with PI mutexes is now more efficient due to kernel
215 support for requeueing to PI futexes. NPTL support added for x86-64.
216 Implemented by Ulrich Drepper.
218 * New locales: ps_AF, my_MM
222 * The following bugs are resolved with this release:
224 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
225 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
226 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
227 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
228 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
230 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
231 Implemented by Ulrich Drepper.
233 * New Linux interfaces: accept4, fallocate, fallocate64.
234 Implemented by Ulrich Drepper.
236 * Correct declarations of string function when used in C++ code. This
237 could lead to compile errors for invalid C++ code.
239 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
242 * New POSIX 2008 interface: psiginfo
243 Implemented by Ulrich Drepper.
245 * New ISO C++1x interfaces: quick_exit, at_quick_exit
246 Implemented by Ulrich Drepper.
248 * Support for selecting between multiple function definitions at runtime
249 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
251 * The libcrypt library can now use the hash function implementations in
252 NSS. Implemented by Ulrich Drepper.
254 * The malloc implementation can be compiled to be less memory efficient
255 but higher performing in multi-threaded programs.
256 Implemented by Ulrich Drepper.
258 * New locales: nan_TW@latin, ks_IN
260 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
261 Implemented by Ulrich Drepper.
263 * Extended printf hook support. It is possible to use user-defined types
264 and extend existing format specifiers.
265 Implemented by Ulrich Drepper.
267 * Handling for group shadow files has been added.
268 Implemented by Ulrich Drepper.
270 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
271 servers (the case, e.g., for some people using the built-in DNS
272 server in ADSL modems/routers). There is a once-per-process timeout
273 in case of a broken server. To avoid it, users can run nscd or put
274 'options single-request' in /etc/resolv.conf.
275 Implemented by Ulrich Drepper.
279 * The following bugs are resolved with this release:
281 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
282 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
283 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
284 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
285 6968, 6974, 6980, 6995, 7008, 7009, 7029
287 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
288 up at the same time. Implemented by Ulrich Drepper.
290 * TLS descriptors for LD and GD on x86 and x86-64.
291 Implemented by Alexandre Oliva.
293 * getaddrinfo now handles DCCP and UDPlite.
294 Implemented by Ulrich Drepper.
296 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
297 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
298 Implemented by Ulrich Drepper.
300 * New implementation of memmem, strstr, and strcasestr which is O(n).
301 Implemented by Eric Blake.
303 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
305 * Implement "e" option for popen to open file descriptor with the
306 close-on-exec flag set. Implemented by Ulrich Drepper.
308 * Implement "b" mode for fmemopen. In this mode writes writes don't
309 implicitly add a NUL byte and seeks from the end of the buffer really
310 use the buffer end, not the string length as the basis.
311 Implemented by Ulrich Drepper.
313 * Many functions, exported and internal, now atomically set the close-on-exec
314 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
316 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
318 Implemented by Pravin Satpute.
320 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
324 * The following bugs are resolved with this release:
326 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
327 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
328 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
329 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
330 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
331 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
332 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
334 * New locales: bo_CN, bo_IN, shs_CA.
336 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
338 * Sorting rules for some Indian languages (Devanagari and Gujarati).
339 Implemented by Pravin Satpute.
341 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
343 * nscd caches now all timeouts for DNS entries
344 Implemented by Ulrich Drepper.
346 * nscd is more efficient and wakes up less often.
347 Implemented by Ulrich Drepper.
349 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
350 vdprintf, and obstack_vprintf.
351 Implemented by Jakub Jelinek.
353 * Faster memset for x86-64.
354 Implemented by Harsha Jagasia and H.J. Lu.
356 * Faster memcpy on x86.
357 Implemented by Ulrich Drepper.
359 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
360 Implemented by Ulrich Drepper.
362 * Faster sqrt and sqrtf implemention for some PPC variants.
363 Implemented by Stephen Munroe.
367 * The following bugs are resolved with this release:
369 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
370 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
371 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
372 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
373 5071, 5103, 5104, 5112, 5113, 5184, 5186
375 * More checking functions: fread, fread_unlocked, open*, mq_open.
376 Implemented by Jakub Jelinek and Ulrich Drepper.
378 * Extend fortification to C++. Implemented by Jakub Jelinek.
380 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
381 by not recognizing 'a' as a modifier when those specs are requested.
382 Implemented by Jakub Jelinek.
384 * PPC optimizations to math and string functions.
385 Implemented by Steven Munroe.
387 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
388 options to be passed. Implemented by Ulrich Drepper.
390 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
392 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
393 Implemented by Ulrich Drepper.
395 * Handle private futexes in the NPTL implementation.
396 Implemented by Jakub Jelinek and Ulrich Drepper.
398 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
399 Implemented by Roland McGrath and Ulrich Drepper.
401 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
403 * SHA-256 and SHA-512 based password encryption.
404 Implemented by Ulrich Drepper.
406 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
407 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
410 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
411 Implemented by Ulrich Drepper.
415 * The following bugs are resolved with this release:
417 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
418 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
419 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
420 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
421 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
422 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
423 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
426 * New Linux interfaces: epoll_pwait, sched_getcpu.
428 * New generic interfaces: strerror_l.
430 * nscd can now cache the services database. Implemented by Ulrich Drepper.
434 * The following bugs are resolved with this release:
436 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
437 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
438 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
439 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
440 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
441 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
442 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
443 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
444 3225, 3251, 3252, 3253, 3273
446 * For Linux, the sorting of addresses returned by getaddrinfo now also
447 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
448 Implemented by Ulrich Drepper.
450 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
451 Implemented by Ulrich Drepper.
453 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
455 * New iconv module for MIK. Contributed by Alexander Shopov.
457 * For sites with broken group and/or passwd database, the auto-propagate
458 option of nscd can prevent creating ID lookup entries from the results
459 of a name lookup and vice versa. This usually is no problem but some
460 site might have problems with the default behavior.
461 Implemented by Ulrich Drepper.
463 * Iterating over entire database in NIS can be slow. With the
464 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
465 to trade time for memory. The entire database will be read at once.
466 Implemented by Ulrich Drepper.
468 * The interfaces introduced in RFC 3542 have been implemented by
471 * Support for the new ELF hash table format was added by Ulrich Drepper.
473 * Support for priority inheritance mutexes added by Jakub Jelinek and
476 * Support for priority protected mutexes added by Jakub Jelinek.
478 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
479 or_IN, csb_PL, fy_NL, sr_ME.
483 * More overflow detection functions.
485 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
486 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
488 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
489 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
490 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
491 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
492 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
493 by Masahide Washizawa.
495 * It is now possible to install audit libraries for the dynamic linker using
496 LD_AUDIT. Implemented by Ulrich Drepper.
498 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
499 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
500 For a libc and libpthread that works well on Linux 2.4 kernels, we
501 recommend using the stable 2.3 branch.
503 * The new function open_wmemstream acts like open_memstream,
504 but uses a wchar_t wide character buffer.
506 * The new function ppoll is an improved version of poll, similar to pselect.
508 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
509 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
510 renameat, unlinkat, linkat, symlinkat, readlinkat.
512 * New Linux kernel system calls: unshare,
513 inotify_init, inotify_add_watch, inotify_rm_watch.
515 * The euidaccess function is now also known by the alias eaccess,
516 for compatibility with some other systems.
518 * Timezone data updated to 2006b version.
522 * The following bugs are resolved with this release:
524 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
525 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
526 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
527 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
528 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
529 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
531 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
533 * As of this release, GCC 4 can be used to compile the C Library.
535 * Timezone data updated to 2005m version.
539 * The following bugs are resolved with this release:
541 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
542 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
543 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
544 777, 787, 821, 822, 823, 825
546 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
550 * Support for RFC 3678. Real implementations exist only for Linux so far.
551 Implemented by Ulrich Drepper.
553 * nscd can now cache entries persistently. Expiring entries are reloaded.
554 For speedups the cache can be shared in memory with client processes.
555 Implemented by Ulrich Drepper.
557 * nscd can now perform SELinux checks.
558 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
560 * getaddrinfo queries are now cached. Canonical name lookup is performed
562 Implemented by Ulrich Drepper.
564 * The nothrow function attribute is used when headers are used by gcc when
565 compiling C code. This can avoid significant amounts of exception
568 * The malloc functions perform more error checking and are stricter when
569 it comes to reacting on errors. The default action is to terminate
570 the process after showing an error message. Implemented by Ulrich Drepper.
572 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
573 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
575 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
576 namespaces using the new function dlmopen(). This feature is of course,
577 like most other dynamic loading functionality, not available in statically
578 linked applications. Implemented by Ulrich Drepper.
580 * Low-overhead boundary checking variants of string and some stdio functions
581 were added. These are to be used in conjunction with a gcc patch by
582 Jakub Jelinek which adds calls to these functions if possible.
583 Implemented by Jakub Jelinek and Ulrich Drepper.
585 * Old code for several operating systems and machine architectures that
586 have not been in working condition in a long time have been removed from
587 the main source tree maintained by the GNU C Library's maintainers.
588 These files are now reside in the separate `ports' source module
589 that is usable as an add-on when building the library.
593 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
594 interrogate the dynamic linker, compatible with the Solaris interface.
596 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
597 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
599 * getifaddrs now uses the netlink interface on Linux to get its information.
600 Implemented by Thorsten Kukuk.
602 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
603 Implemented by Ulrich Drepper.
605 * support for non-executable stacks on x86 has been added. Changes mostly
608 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
611 * getaddrinfo now performs destination address selection according to
616 * Thread-safe interfaces for many functions that access locale data
617 were added in version 2.3, but these features were omitted from NEWS.
618 Many functions have variants with an `_l' suffix that take a `locale_t'
619 object as a parameter rather than consulting the current locale.
620 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
621 create and maintain `locale_t' objects. Additionally, the new function
622 `uselocale' sets "the current locale" (as used by functions not so
623 parameterized) set for an individual thread. These features were added
624 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
626 * The functions getresuid, getresgid, setresuid, and setresgid, which
627 have long been available on Linux, are now declared in <unistd.h>
628 and are now also available on the Hurd.
630 * ELF thread-local storage support (TLS) now works on x86-64.
632 * The new dynamic string token $LIB is expanded in shared library names.
633 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
635 * Aldy Hernandez contributed complete software floating point support for
636 PowerPC machines with no FPU.
638 * fexecve is implemented on Linux.
640 * The `btowc' function should work at least twice as fast due to
641 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
643 * With approriate thread add-ons cancelable functions are now implemented
644 in libc.so as well. No need to call the function in libpthread. This
645 change allowed to finally disable the incorrect and expensive handling
646 of weak definition in ld.so.
648 * Yet more PLT entries in libc.so have been removed. We finally arrived
649 at the bare minimum. Startup times improved appropriately.
651 * Support for the new Linux/x86 system call interface was added. The
652 AT_SYSINFO auxiliary vector entry is recognized and handled.
656 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
659 * iconv (the program and the interface) now accepts empty names (excluding
660 options like //TRANSLIT) to mean "use charset of current locale".
662 * localedef can now transliterate characters in strings which are not in
663 the provided charmap. The information from the input locale is used.
665 * Prelinking support was added for ELF targets. This requires additional
666 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
668 * Read-only stdio streams now use mmap to speed up operation by eliminating
669 copying and buffer underflows. To use add 'm' to the mode string of
670 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
672 * The malloc functions were completely rewritten by Wolfram Gloger based
673 on Doug Lea's malloc-2.7.0.c.
675 * Isamu Hasegawa contributed a completely new and POSIX-conformant
676 implementation of regex.
678 * Bruno Haible upgraded the iconv and locale implementation to support
681 * Contents of the LC_* and LANG environment variables in the CEN style are
682 not recognized anymore. It never was used. Change by Ulrich Drepper.
684 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
685 thread-local storage (TLS) ABI on some platforms.
686 Changes by Ulrich Drepper. SH support by Kaz Kojima.
688 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
689 EUC-JISX0213, and TSCII.
691 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
692 BSD-compatible interface for getting all network interface addresses.
693 Implementation for IPv4 by Roland McGrath.
695 * Loading of locale data is faster due to the introduction of a locale
696 archive. Implemented by Roland McGrath and Ulrich Drepper.
698 * Startup times are significantly reduced by not using exported functions
699 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
702 * Steven Munroe contributed a port to PowerPC64/Linux.
706 * The Hurd now uses the GNU libio implementation of stdio rather than the
707 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
709 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
710 with the same behavior as the Linux system call of the same name.
714 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
715 128-bit long double format.
717 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
718 IBM1161, and IBM1162 charsets.
720 * Andreas Jaeger contributed a port to x86-64/Linux.
722 * Peter Bruin contributed a port to PowerPC/Hurd.
724 * libc functions using I/O streams now can handle wide-oriented streams
727 * optimizations in the dynamic linker. Binaries created by recent binutils
728 versions start up quicker due to reduced time spent on relocations.
730 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
734 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
735 asinh, atanh, j0 for the 128-bit long double format.
737 * Bruno Haible updated all the code handling Unicode in some form to
740 * Speed of regex for single-byte locales is back to previous levels.
741 Patch by Isamu Hasegawa.
743 * Alpha, SPARC, and IA-64 now also using floating stacks.
745 * Startup time of internationalized applications greatly improved through
746 iconv cache. Use iconvconfig to generate the cache file.
747 Contributed by Ulrich Drepper.
749 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
750 severe performance problems. Patch by David Mosberger.
752 * The Hurd port got a lot more functionality like AIO, various stdio
753 extensions, etc. Mainly done by Roland McGrath.
755 * mtrace can now lookup symbols in shared libraries.
759 * Intel's IA-64 math library is largely integrated. It provides fast and
760 accurate implementatations for most basic and standard math functions
761 in float, double, and long double format.
763 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
764 and asin for the 96-bit long double format and asin, log, tan for the
765 128-bit long double format.
767 * The beginning of a last-bit accurate math library by IBM Haifa were added.
768 The basic double functions exist today. Contributed by Abraham Ziv
769 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
770 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
772 * An asynchronous name lookup library was added. The interface is designed
773 after POSIX AIO. The proposal was circulated beforehand to get comments.
774 No negative ones came in. Implemented by Ulrich Drepper.
776 * Port to S390/64bit contributed by Martin Schwidefsky
777 <schwidefsky@de.ibm.com>.
779 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
780 of functions for Linux/IA-64.
782 * The RPC code is now thread safe. Threads can now use the same service
783 of different services at the same time. Patch by Eric Norum
784 <eric.norum@usask.ca> with some help by Ulrich Drepper.
786 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
787 family of functions for Linux/S390.
789 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
790 of functions for Linux/x86.
792 * Port to Linux/CRIS contributed by Axis Communications.
796 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
797 we can now check for namespace violations and missing declarations. The
798 result is that almost all headers are now Unix-compliant (as defined in
799 the upcoming XPG6). The negative side is that some programs might need
800 corrections, too, if they depend on the incorrect form of the headers in
801 previous versions which defined too many symbols and included too many
804 * regex now handles multibyte character sets correctly.
805 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
807 * iconv (the program) does now conform to the upcoming XPG6 and handles
808 charmaps. Instead of the charset names the path of charmaps can be
809 provided and the conversion happens based on this data.
810 Contributed by Ulrich Drepper.
812 * The locale program now provides detailed information about the installed
817 only lists the names of the supported locales
821 provides details such as country, language, and codeset name.
822 Contributed by Ulrich Drepper.
826 * The gencat program now parses the input file according to the charset
827 selected by the LC_CTYPE category. This is important for stateful
828 character sets. To make generating catalogs easier there is a way
829 to overwrite the charset selected by the locale: before the first
830 message or $ quote line the catalog can contain a line like
834 to select the charset (ISO-8859-2 in this case).
836 Implemented by Shinya Hanataka and Ulrich Drepper.
838 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
839 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
840 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
842 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
843 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
845 * The LANGUAGE environment variable is now ignored unless the locale is
846 changed from the default "C" locale.
848 * The usual bug fixes.
852 * Greg McGary added runtime support for bounds checking using gcc's
853 new -fbounded-pointers option. ix86 target is complete. PowerPC
856 * Thorsten Kukuk added secure mode support to nscd.
858 * The Berkeley db libraries have been removed.
860 Related, the nss_db module is now in a separate package since it
861 obviously requires a database library being available.
863 * Wide character I/O streams implemented by Ulrich Drepper.
865 * Functions from the extended socket API added by Ulrich Drepper.
867 * Functions feenableexcept and fedisableexcept to control the
868 behaviour of individual exceptions have been added by Andreas Jaeger.
870 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
872 * The resolver code has been updated from bind 8.2.3-T5B which supports
873 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
876 This change could in some situations effect backward compatibility. Since
877 now `_res' is a thread-local instead of a global variable, modifying it
878 in one thread does not have any effect in other threads.
880 The resolver library was also extended to allow IPv6 as the transport
881 protocol for the requests. This work was done by Stig Venaas.
883 * Compatibility code for K&R C compilers has been removed from the
884 header files. A ISO C compiler is needed to use the library
885 (conforming to either C89 or C99 standard).
887 * Complete rewrite of the localedef program to support multibyte character
888 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
889 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
890 Implemented by Ulrich Drepper.
892 Bruno Haible significantly improved the generation and use of the data
893 structures for the wide character tables.
895 * Plural handling in gettext implemented by Ulrich Drepper.
897 * The utmp daemon has been removed.
899 * The port to MIPS-Linux has been finished by Andreas Jaeger.
901 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
904 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
906 * POSIX barriers implemented by Kaz Kylheku.
908 * POSIX spawn function family implemented by Ulrich Drepper.
910 * POSIX spinlocks are now available.
912 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
914 * the configure option --enable-kernel=X.Y.Z allows to strip out
915 compatibility for kernel versions before X.Y.Z. This is currently only
916 implemented for Linux.
918 * the sockaddr_in6 structure changed. The IPv6 working group added a new
919 field sin6_scope_id. This means that all programs using IPv6 should be
920 recompiled. Don't expect binary compatibility with previous glibc
923 * various conversion modules for IBM character sets contributed by
926 * IA-64 port by Jes Sorensen and HJ Lu.
928 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
929 Compiling the GNU C Library for Linux/ia64
930 ******************************************
932 Please refer to the file INSTALL in the same directory as you found
933 this file for general information about configuring and compiling
936 For general inquiries about glibc under Linux/ia64 please use the
937 following mailing list linux-ia64@linuxia64.org or one of the relevant
940 Recommended Tools for Compilation
941 =================================
943 In order for glibc-2.2 to build correctly on the ia64 you need at
944 least the following versions of the GNU tools (the :
946 * The Cygnus toolchain snapshot for the ia64 as of August 4
947 including the provided set of patches. It is however recommend
948 you use the October 24 toolchain snapshot or a more recent version.
950 OR alternatively you can try the following (the Cygnus toolchain is
951 the recommended solution):
953 * GCC and binutils, GAS and GNU LD out of CVS from
954 sources.redhat.com as of August 28, 2000 or later. The CVS tree
955 may require special patches to work properly on the ia64.
957 Configuring and compiling GNU Libc for Linux/ia64
958 =================================================
960 The library requires Linux kernel version 2.4.0-test4-000728 or
961 later to funtion properly. Besides that it support for debug libraries
962 is currently untested. Hence the following options
963 are required for configuring the library:
965 --disable-debug --enable-kernel=2.4.0
967 It is also important that you make sure the library picks up the
968 appropriate kernel header files, if you do not have recent enough
969 kernel headers in /usr/src/linux/include, you should use the
970 --with-headers=<path> option to specify the location.
972 As an example I personally use the following options to configure
977 --enable-kernel=2.4.0
981 --with-headers=/home/jes/linux/include
986 Jes Sorensen <jes@linuxcare.com>,
988 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1002 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1004 * New xdr functions are added; some rpc functions are now 64bit clean.
1006 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1008 * Fixed known incompatibilities with glibc 2.0.
1010 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1012 * Optimized a number of functions (especially the ELF dynamic loader).
1014 * Update timezone data files.
1016 * lots of charmaps corrections
1018 * some new locale definitions and charmaps
1023 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1024 conform to POSIX member type requirements. Symbol versions have been
1025 adjusted as needed within the library, and for direct use by applications,
1026 but there is potential for problems if third-party libraries use
1027 struct timeval as part of their interface. This does not present
1028 a problem for X and other "essential" system libraries.
1030 * An additional locale model to support C++ Standard Library locale
1031 model and probably more was implemented by Ulrich Drepper.
1033 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1036 * Miles Bader provided the `argp' function family to support hierachical
1037 command line argument parsing, layered on top of getopt.
1039 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1041 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1044 * scanf recognizes the %a and %A format for scanning floating point numbers.
1046 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1047 information and interfaces for the available integer types.
1049 * about 130 new math functions were added to implement the ISO C9x math
1052 * the new header <complex.h> contains definitions of the complex math
1053 functions from ISO C 9X.
1055 * the new header <tgmath.h> defines generic macros to use complex or
1056 real valued functions.
1058 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1060 * Andreas Jaeger provided a test suite for the math library.
1062 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1064 * Ulrich Drepper added character set conversion functions (iconv).
1066 * Optimized string functions have been added.
1068 * The localedata addon is now part of glibc.
1070 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1072 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1073 daemon for NSS (nscd).
1075 Missing a better place here are some numbers on improvements. Under
1076 Linux 2.1.125 un-tar-ing the kernel sources takes
1080 using local files 12.19s 6.88s 22.91s
1082 using NIS 13.92s 8.91s 26.34s
1084 using NIS & nscd 10.37s 7.34s 25.30s
1086 using NIS+ 27.57s 30.37s 640.46s
1088 using NIS+ & nscd 10.25s 7.83s 26.51s
1090 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1092 Keep in mind that non-namelookup related operations dominate above times.
1093 It was just a common complain that using NIS+ unpacking the kernel is
1096 [1] The old nscd implementation is not available anymore since it was
1097 distributed with glibc up to version 2.0.98 and thus is now replaced.
1099 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1101 * Mark Kettenis provided a Hesiod NSS module.
1103 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1104 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1106 * rcmd can now handle netgroups (Dick Streefland).
1108 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1111 * Support for the IPv6 protocol has been added to the socket API, as per the
1112 latest draft standards.
1114 * Support for Linux 2.2 has been added.
1116 * Interface changes relative to the latest 2.0.x release:
1117 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1118 addseverity NEW: Unix98
1119 alphasort64 NEW: LFS
1120 argp_err_exit_status NEW: argp, GNU ext
1121 argp_error NEW: argp, GNU ext
1122 argp_failure NEW: argp, GNU ext
1123 argp_help NEW: argp, GNU ext
1124 argp_parse NEW: argp, GNU ext
1125 argp_program_bug_address NEW: argp, GNU ext
1126 argp_program_version NEW: argp, GNU ext
1127 argp_program_version_hook NEW: argp, GNU ext
1128 argp_state_help NEW: argp, GNU ext
1129 argp_usage NEW: argp, GNU ext
1130 authdes_create NEW: Secure RPC
1131 authdes_getucred NEW: Secure RPC
1132 authdes_pk_create NEW: Secure RPC
1133 backtrace NEW: GNU ext.
1134 backtrace_symbols NEW: GNU ext.
1135 backtrace_symbols_fd NEW: GNU ext.
1137 cacosf NEW: ISO C 9x
1138 cacosh NEW: ISO C 9x
1139 cacoshf NEW: ISO C 9x
1140 cacoshl NEW: ISO C 9x
1141 cacosl NEW: ISO C 9x
1148 casinf NEW: ISO C 9x
1149 casinh NEW: ISO C 9x
1150 casinhf NEW: ISO C 9x
1151 casinhl NEW: ISO C 9x
1152 casinl NEW: ISO C 9x
1154 catanf NEW: ISO C 9x
1155 catanh NEW: ISO C 9x
1156 catanhf NEW: ISO C 9x
1157 catanhl NEW: ISO C 9x
1158 catanl NEW: ISO C 9x
1159 cbc_crypt NEW: Secure RPC
1163 ccoshf NEW: ISO C 9x
1164 ccoshl NEW: ISO C 9x
1170 cimagf NEW: ISO C 9x
1171 cimagl NEW: ISO C 9x
1172 clearerr_locked REMOVED
1173 clntunix_create NEW: sunrpc ext
1175 clog10 NEW: ISO C 9x
1176 clog10f NEW: ISO C 9x
1177 clog10l NEW: ISO C 9x
1187 cprojf NEW: ISO C 9x
1188 cprojl NEW: ISO C 9x
1190 crealf NEW: ISO C 9x
1191 creall NEW: ISO C 9x
1196 csinhf NEW: ISO C 9x
1197 csinhl NEW: ISO C 9x
1200 csqrtf NEW: ISO C 9x
1201 csqrtl NEW: ISO C 9x
1205 ctanhf NEW: ISO C 9x
1206 ctanhl NEW: ISO C 9x
1208 des_setparity NEW: Secure RPC
1209 ecb_crypt NEW: Secure RPC
1210 endutxent NEW: Unix98
1212 exp10f NEW: ISO C 9x
1213 exp10l NEW: ISO C 9x
1217 fattach NEW: STREAMS
1218 fdetach NEW: STREAMS
1222 feclearexcept NEW: ISO C 9x
1223 fegetenv NEW: ISO C 9x
1224 fegetexceptflag NEW: ISO C 9x
1225 fegetround NEW: ISO C 9x
1226 feholdexcept NEW: ISO C 9x
1228 feraiseexcept NEW: ISO C 9x
1229 ferror_locked REMOVED
1230 fesetenv NEW: ISO C 9x
1231 fesetexceptflag NEW: ISO C 9x
1232 fesetround NEW: ISO C 9x
1233 fetestexcept NEW: ISO C 9x
1234 feupdateenv NEW: ISO C 9x
1235 fflush_locked REMOVED
1239 fgets_unlocked NEW: GNU ext.
1240 fileno_locked REMOVED
1252 fputc_locked REMOVED
1253 fputs_unlocked NEW: GNU ext.
1254 fread_unlocked NEW: GNU ext.
1259 fstatvfs NEW: Unix98
1263 ftruncate64 NEW: LFS
1265 fwrite_unlocked NEW: GNU ext.
1266 gai_strerror NEW: IPv6
1270 getchar_locked REMOVED
1272 getdate_err NEW: Unix98
1273 getdate_r NEW: GNU ext.
1275 getnameinfo NEW: IPv6
1276 getnetname NEW: Secure RPC
1277 getpmsg NEW: STREAMS
1278 getpt NEW: Unix98 PTY
1279 getrlimit64 NEW: LFS
1280 getutxent NEW: Unix98
1281 getutxid NEW: Unix98
1282 getutxline NEW: Unix98
1283 glob64 NEW: GNU ext.
1284 globfree64 NEW: GNU ext.
1285 gnu_get_libc_release NEW: GNU ext.
1286 gnu_get_libc_version NEW: GNU ext.
1287 grantpt NEW: Unix98 PTY
1288 host2netname NEW: Secure RPC
1290 iconv_close NEW: iconv
1291 iconv_open NEW: iconv
1292 if_freenameindex NEW: IPv6
1293 if_indextoname NEW: IPv6
1294 if_nameindex NEW: IPv6
1295 if_nametoindex NEW: IPv6
1296 in6addr_any NEW: IPv6
1297 in6addr_loopback NEW: IPv6
1298 inet6_isipv4mapped NEW: IPv6
1299 isastream NEW: STREAMS
1300 iswblank NEW: GNU ext.
1301 key_decryptsession NEW: Secure RPC
1302 key_decryptsession_pk NEW: Secure RPC
1303 key_encryptsession NEW: Secure RPC
1304 key_encryptsession_pk NEW: Secure RPC
1305 key_gendes NEW: Secure RPC
1306 key_get_conv NEW: Secure RPC
1307 key_secretkey_is_set NEW: Secure RPC
1308 key_setnet NEW: Secure RPC
1309 key_setsecret NEW: Secure RPC
1310 llrint NEW: ISO C 9x
1311 llrintf NEW: ISO C 9x
1312 llrintl NEW: ISO C 9x
1313 llround NEW: ISO C 9x
1314 llroundf NEW: ISO C 9x
1315 llroundl NEW: ISO C 9x
1320 lrintf NEW: ISO C 9x
1321 lrintl NEW: ISO C 9x
1322 lround NEW: ISO C 9x
1323 lroundf NEW: ISO C 9x
1324 lroundl NEW: ISO C 9x
1326 makecontext NEW: Unix98
1327 mempcpy NEW: GNU ext.
1330 modify_ldt NEW: kernel
1334 nearbyint NEW: ISO C 9x
1335 nearbyintf NEW: ISO C 9x
1336 nearbyintl NEW: ISO C 9x
1337 netname2host NEW: Secure RPC
1338 netname2user NEW: Secure RPC
1339 nexttoward NEW: ISO C 9x
1340 nexttowardf NEW: ISO C 9x
1341 nexttowardl NEW: ISO C 9x
1345 passwd2des NEW: Secure RPC
1347 pow10f NEW: GNU ext.
1348 pow10l NEW: GNU ext.
1351 printf_size NEW: GNU ext.
1352 printf_size_info NEW: GNU ext.
1353 profil_counter REMOVED
1354 pthread_mutexattr_getkind_np REPLACED
1355 pthread_mutexattr_setkind_np REPLACED
1356 ptsname NEW: Unix98 PTY
1357 ptsname_r NEW: Unix98 PTY
1359 putchar_locked REMOVED
1360 putgrent NEW: GNU ext.
1362 putpmsg NEW: STREAMS
1363 pututxline NEW: Unix98
1367 readdir64_r NEW: LFS
1368 remquo NEW: ISO C 9x
1369 remquof NEW: ISO C 9x
1370 remquol NEW: ISO C 9x
1372 roundf NEW: ISO C 9x
1373 roundl NEW: ISO C 9x
1375 scalbln NEW: ISO C 9x
1376 scalblnf NEW: ISO C 9x
1377 scalblnl NEW: ISO C 9x
1379 sendfile NEW: kernel
1380 setcontext NEW: Unix98
1381 setrlimit64 NEW: LFS
1382 setutxent NEW: Unix98
1384 sigignore NEW: Unix98
1385 sigqueue NEW: POSIX.1b
1386 sigrelse NEW: Unix98
1387 sigset NEW: POSIX.1b
1388 sigtimedwait NEW: POSIX.1b
1389 sigwaitinfo NEW: POSIX.1b
1390 sincos NEW: GNU ext.
1391 sincosf NEW: GNU ext.
1392 sincosl NEW: GNU ext.
1396 strcasestr NEW: GNU ext.
1397 strtoimax NEW: ISO C 9x
1398 strtoumax NEW: ISO C 9x
1399 strverscmp NEW: GNU ext.
1400 svcauthdes_stats NEW: Secure RPC
1401 svcunix_create NEW: sunrpc etx
1402 svcunixfd_create NEW: sunrpc ext
1403 swapcontext NEW: Unix98
1404 tcgetsid NEW: Unix98 PTY
1405 tdestroy NEW: GNU ext.
1406 tgamma NEW: ISO C 9x
1407 tgammaf NEW: ISO C 9x
1408 tgammal NEW: ISO C 9x
1412 truncf NEW: ISO C 9x
1413 truncl NEW: ISO C 9x
1415 unlockpt NEW: Unix98 PTY
1416 updwtmpx NEW: Unix98
1417 user2netname NEW: Secure RPC
1418 utmpxname NEW: Unix98
1419 versionsort NEW: GNU ext.
1420 versionsort64 NEW: GNU ext.
1422 wcscasecmp NEW: GNU ext.
1423 wcsncasecmp NEW: GNU ext.
1424 wcsnlen NEW: GNU ext.
1425 wcstoimax NEW: ISO C 9x
1426 wcstoll NEW: ISO C 9x
1427 wcstoull NEW: ISO C 9x
1428 wcstoumax NEW: ISO C 9x
1430 wordexp NEW: POSIX.2
1431 wordfree NEW: POSIX.2
1432 write_profiling REMOVED
1433 xdecrypt NEW: Secure RPC
1434 xdr_authdes_cred NEW: Secure RPC
1435 xdr_authdes_verf NEW: Secure RPC
1436 xdr_cryptkeyarg NEW: Secure RPC
1437 xdr_cryptkeyarg2 NEW: Secure RPC
1438 xdr_cryptkeyres NEW: Secure RPC
1439 xdr_getcredres NEW: Secure RPC
1440 xdr_key_netstarg NEW: Secure RPC
1441 xdr_key_netstres NEW: Secure RPC
1442 xdr_keybuf NEW: Secure RPC
1443 xdr_keystatus NEW: Secure RPC
1444 xdr_netnamestr NEW: Secure RPC
1445 xdr_sizeof NEW: Secure RPC
1446 xdr_unixcred NEW: sunrpc ext
1447 xencrypt NEW: Secure RPC
1448 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1459 * inet_ntoa is thread-safe
1461 * updwtmp is moved from libutil to libc
1463 * rewrite of cbrt function
1465 * update of timezone data
1479 * add atoll function
1481 * fix complex problems in Berkeley DB code
1483 * fix math functions
1487 * fixed lots of header problems (especially Linux/GNU specific)
1489 * dynamic loader preserves all registers
1491 * Roland McGrath provided support for handling of auxiliary objects in
1492 the ELF dynamic loader.
1494 * support for parallel builds is improved
1498 * GNU extensions are no longer declared by default. To enable them you
1499 must define the macro `_GNU_SOURCE' in your program or compile with
1502 * The library has changed from using GNU ld symbol aliases to using weak
1503 symbols where available. The ELF object file format supports weak
1504 symbols; GNU ld also supports weak symbols in the a.out format. (There
1505 is also now support for other GNU ld extensions in ELF. Use the
1506 `--with-elf' option to configure to indicate you have ELF, and
1507 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1508 of many files which contained only symbol aliases, reducing the size of
1509 the source and the compiled library; many other files were renamed to
1510 less cryptic names previously occupied by the symbol alias files.
1511 There is a new header file <elf.h> for programs which operate on
1512 files in the ELF format.
1514 * Converted to Autoconf version 2, so `configure' has more options.
1515 Run `configure --help' to see the details.
1517 * The library can now be configured to build profiling, highly-optimized
1518 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1519 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1520 `configure' enable building these extra libraries. The shared library is
1521 built by default when using both ELF and GNU ld. When shared libraries
1522 are enabled, the new library `-ldl' is available for arbitrary run-time
1523 loading of shared objects; its interface is defined in <dlfcn.h>. The
1524 new header file <link.h> gives access to the internals of the run-time
1525 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1526 application of same name on other systems and it provides information
1527 about dynamically linked binaries.
1529 * The C library now provides the run-time support code for profiling
1530 executables compiled with `-pg'. Programs can control the profiling code
1531 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1532 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1533 the support for this file format was contributed by David Mosberger-Tang.
1535 * The math code has been replaced with a math library based on fdlibm from
1536 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1537 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1538 functions. The math functions now reside in a separate library, so
1539 programs using them will need to use `-lm' their linking commands.
1541 * John C. Bowman contributed optimized ix87 assembler inline functions.
1543 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1544 mechanism similar to that found in Solaris 2. This is now used for the
1545 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1546 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1547 file controls what services are used for each individual database. This
1548 works by loading shared libraries with names specified in `nsswitch.conf',
1549 so service modules can be changed or added at any time without even
1550 relinking any program. Currently there are the file, db, and NIS based
1551 NSS services available.
1553 * The new functions `strtoq' and `strtouq' parse integer values from
1554 strings, like `strtol' and `strtoul', but they return `long long int' and
1555 `unsigned long long int' values, respectively (64-bit quantities).
1557 * The new functions `strtof' and `strtold' parse floating-point values from
1558 strings, like `strtod', but they return `float' and `long double' values,
1559 respectively (on some machines `double' and `long double' are the same).
1561 * Ulrich Drepper has contributed new implementations of the floating-point
1562 printing and reading code used in the `printf' family of functions and
1563 `strtod', `strtof', and `strtold'. These new functions are perfectly
1564 accurate, and much faster than the old ones.
1566 * The implementation of the POSIX locale model was completely rewritten by
1567 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1568 to compile the POSIX locale definition.
1570 * The former dummy implementations of the strcoll and strxfrm function are
1571 now replaced by fully functional code contributed by Ulrich Drepper. The
1572 collation information comes from the POSIX locale definitions.
1574 * The new header <langinfo.h> defines an interface for accessing
1575 various locale-dependent data (using the locale chosen with `setlocale').
1577 * Ulrich Drepper has contributed a new suite of functions for operation on
1578 wide-character and multibyte-character strings, in <wchar.h>;
1579 and classification and case conversion of wide characters, in <wctype.h>.
1580 These new functions are conforming to the ISO C, Amendement 1 specification.
1582 * There is now a second implementation of the standard I/O library available.
1583 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1584 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1586 * You can now use positional parameter specifications in format strings
1587 for the `printf' and `scanf' families of functions. For example,
1588 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1589 ``Number 6, Mr Jones''. This is mainly useful when providing different
1590 format strings for different languages, whose grammars may dictate
1591 different orderings of the values being printed. To support this
1592 feature, the interface for `register_printf_handler' has changed; see
1593 the header file <printf.h> for details.
1595 * The `printf' and `scanf' families of functions now understand a new
1596 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1597 to group numbers as indicated by the locale; for `scanf' and friends, this
1598 says to accept as valid only a number with all the proper grouping
1599 separators in the right places. In the default "C" locale, numbers are
1600 not grouped; but locales for specific countries will define the usual
1601 conventions (i.e. separate thousands with `,' in the US locale).
1603 * The pgrp functions have been regularized, slightly incompatibly but much
1604 less confusingly. The core functions are now `getpgid' and `setpgid',
1605 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1606 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1607 provided for compatibility. There is no longer an incompatible `getpgrp'
1608 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1610 * The new header file <fts.h> and suite of functions simplify programs that
1611 operate on directory trees. This code comes from 4.4 BSD.
1613 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1614 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1615 NSS scheme used in glibc.
1617 * There is a new malloc debugging hook `__memalign_hook'.
1619 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1620 `unsigned int' in <sys/types.h>. These are for compatibility only and
1621 their use is discouraged.
1623 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1624 done differently, so that it works even without GNU ld.
1626 * New function `euidaccess' checks allowed access to a file like `access',
1627 but using the effective IDs instead of the real IDs.
1629 * The time zone data files have been updated for the latest and greatest
1630 local time conventions of the countries of the world.
1632 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1635 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1636 for formatting floating-point numbers. They are provided only for
1637 compatibility; new programs should use `sprintf' instead. There are
1638 also equivalent function for the `long double' floating-point type and
1639 all functions also exist in a reentrant form.
1641 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1642 functions for maintaining the login-record files (primarily of use to
1643 system programs such as `login'), and convenient functions for
1644 allocating and initializing a pseudo-terminal (pty) device.
1646 * Ulrich Drepper has contributed new support for System V style
1647 shared memory and IPC on systems that support it.
1649 * Ulrich Drepper has contributed several miscellaneous new functions found
1650 in System V: The `hsearch' family of functions provide an effective
1651 implementation of hash tables; `a64l' and `l64a' provide a very simple
1652 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1655 * Ulrich Drepper has contributed new reentrant counterparts for the
1656 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1658 * Ulrich Drepper has contributed new, highly-optimized versions of several
1659 string functions for the i486/Pentium family of processors.
1661 * Ulrich Drepper has updated the Linux-specific code, based largely
1662 on work done in Hongjiu Lu's version of GNU libc for Linux.
1663 The GNU library now supports Linux versions 2.0.10 and later,
1664 using the ELF object file format (i[3456]86-*-linux).
1666 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1668 * David Mosberger-Tang and Richard Henderson have ported the C library
1669 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1670 dynamic linking support for ELF/Alpha.
1672 * Richard Henderson contributed several Alpha optimized assembler function
1673 for arithmetic and string handling.
1675 * Ulrich Drepper has contributed a new set of message catalog functions to
1676 support multiple languages using the <libintl.h> interface, for use with
1677 his new package GNU gettext. Translation volunteers have contributed
1678 catalogs of the library's messages in Spanish, German, and Korean.
1680 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1681 program and the `catgets' function for reading the catalog files it
1682 creates. (The <libintl.h> interface is preferred; we include the
1683 <nl_types.h> interface using `catgets' only for source compatibility with
1684 programs already written to use it.)
1686 * New header file <values.h> gives SVID-compatible names for <limits.h>
1689 * Various new macros, declarations, and small header files for compatibility
1692 * New function `group_member' is a convenient way to check if a process has
1693 a given effective group ID.
1695 * When using GCC 2.7 and later, the socket functions are now declared in a
1696 special way so that passing an argument of type `struct sockaddr_in *',
1697 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1698 `struct sockaddr *' type, does not generate a type-clash warning.
1700 * New function `error' declared in header file <error.h> is a convenient
1701 function for printing error messages and optionally exiting; this is the
1702 canonical function used in GNU programs. The new functions `err', `warn',
1703 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1704 doing the same thing.
1706 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1707 POSIX.2 `glob' function to do ~ and {...} expansion.
1709 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1710 `clearenv' which is used in POSIX.9 is also available.
1712 * New function `getsid' returns session ID number on systems that support it.
1714 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1715 files <db.h> and <mpool.h> provide a rich set of functions for several
1716 types of simple databases stored in memory and in files, and <ndbm.h> is
1717 an old `ndbm'-compatible interface using the `db' functions. Link with
1718 `-ldb' to get these functions.
1720 * New macro `strdupa' copies a string like `strdup', but uses local stack
1721 space from `alloca' instead of dynamic heap space from `malloc'.
1723 * New function `strnlen' is like `strlen' but searches only a given maximum
1724 number of characters for the null terminator. `stpncpy', `strndup' and
1725 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1728 * New function `statfs' in header <sys/statfs.h>.
1730 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1731 provide convenient functions for operating on blocks of null-terminated
1734 * A new suite of functions in <utmp.h> handle all the details of reading
1735 and writing the utmp file.
1737 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1740 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1741 completely POSIX compliant and also implemented the extended functionality
1742 to handle alternate digit representation and alternate era date formats.
1744 * Ulrich Drepper provided an implementation of the `strptime' function
1745 defined in XPG4.2 which transforms a string into a `struct tm' value.
1747 * Paul Eggert provided the tzselect shell script as part of the timezone
1748 code. The shell script makes it easy to select the correct timezone
1751 * The implementation of the malloc family of functions is completely replaced
1752 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1753 The implementation uses the mmap function (if available) and it is
1754 optimized for the use in multi threaded programs.
1756 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1757 functions. This new functionality is usable by specifying a special
1758 salt string and it is compatible with implementation on *BSD systems.
1760 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1761 `getsubopt' to handle second level command line options, `bsd_signal'
1762 to access BSD style `signal' functionality, the obsolete `regexp' style
1765 * the `lchown' function is available on system which support this
1768 * The implementation of the shadow password handling function was contributed
1771 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1773 * POSIX.1g support was added. The <sys/select.h> header is available,
1774 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1775 implementation of `getaddrinfo'.
1779 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1781 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1782 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1784 * The new function `daemon' from 4.4 BSD is useful for server programs that
1785 want to put themselves in the background.
1787 * Joel Sherrill has contributed support for several standalone boards that
1788 run without an operating system.
1790 * `printf', `scanf' and friends now accept a `q' type modifier for long
1791 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1793 * All of the code taken from BSD (notably most of the math and networking
1794 routines) has been updated from the BSD 4.4-Lite release.
1796 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1798 * The new functions `getdomainname' and `setdomainname' fetch or change the
1799 YP/NIS domain name. These are system calls which exist on systems which
1802 * The time zone data files have been updated for the latest international
1805 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1806 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1810 * The C library now includes support for Sun RPC, from Sun's free
1811 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1812 are included. (There is still no support for YP.)
1814 * Tom Quinn has contributed a port of the C library to SGI machines running
1815 Irix 4 (mips-sgi-irix4).
1817 * The new `lockf' function is a simplified interface to the locking
1818 facilities of `fcntl', included for compatibility.
1820 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1822 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1824 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1827 * The error message printed by `assert' for a failed assertion now includes
1828 the name of the program (if using GNU ld) and the name of the calling
1829 function (with versions of GCC that support this).
1831 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1833 * The library now includes the <sys/mman.h> header file and memory
1834 management functions `mmap', `munmap', `mprotect', `msync', and
1835 `madvise', on systems that support those facilities.
1837 * The interface for `mcheck' has changed slightly: the function called to
1838 abort the program when an allocation inconsistency is detected now takes
1839 an argument that indicates the type of failure. The new function
1840 `mprobe' lets you request a consistency check for a particular block at
1841 any time (checks are normally done only when you call `free' or `realloc'
1844 * It is now possible to easily cross-compile the C library, building on one
1845 system a library to run on another machine and/or operating system. All
1846 you need to do is set the variable `HOST_CC' in `configparms' to the
1847 native compiler for programs to run on the machine you are building on (a
1848 few generator programs are used on Unix systems); set `CC' to the
1851 * The new function `fexecve' (only implemented on the GNU system) executes
1852 a program file given a file descriptor already open on the file.
1856 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1857 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1859 * You can set the variable `libprefix' in `configparms' to specify a prefix
1860 to be prepended to installed library files; this makes it easy to install
1861 the GNU C library to be linked as `-lgnuc' or whatever.
1863 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1864 copies a limited number of characters from a string, and returns the
1865 address of the last character written.
1867 * You no longer need to check for whether the installed `stddef.h' is
1868 compatible with the GNU C library. configure now checks for you.
1870 * You can now define a per-stream `fileno' function to convert the
1871 stream's cookie into an integral file descriptor.
1873 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1874 allocates zero bytes of storage, and returns a unique pointer which
1875 you can pass to `realloc' or `free'. The behavior is undefined if
1876 you dereference this pointer.
1878 * The C library now runs on Sony NEWS m68k machines running either
1879 NewsOS 3 or NewsOS 4.
1881 * The new `syscall' function is a system-dependent primitive function
1882 for invoking system calls. It has the canonical behavior on Unix
1883 systems, including unreliable return values for some calls (such as
1884 `pipe', `fork' and `getppid').
1886 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1887 to `EAGAIN', which is the preferred name. On systems whose kernels
1888 use two distinct codes, the C library now translates EWOULDBLOCK to
1889 EAGAIN in every system call function.
1893 * The GNU C Library Reference Manual is now distributed with the library.
1894 `make dvi' will produce a DVI file of the printed manual.
1895 `make info' will produce Info files that you can read on line using C-h i
1896 in Emacs or the `info' program.
1897 Please send comments on the manual to bug-glibc-manual@gnu.org.
1899 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1901 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1903 * Jason Merrill has contributed a port to the Sequent Symmetry running
1904 Dynix version 3 (i386-sequent-dynix).
1906 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1907 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1909 * New function `memory_warnings' lets you arrange to get warnings when
1910 malloc is running out of memory to allocate, like Emacs gives you.
1912 * The C library now contains the relocating allocator used in Emacs 19 for
1913 its editing buffers. This allocator (ralloc) minimizes allocation
1914 overhead and fragmentation by moving allocated regions around whenever it
1915 needs to. You always refer to a ralloc'd region with a "handle" (a
1916 pointer to a pointer--an object of type `void **').
1918 * There is a new `printf' format: `%m' gives you the string corresponding
1919 to the error code in `errno'.
1921 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1922 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1923 pass, the `a' modifier says to fill in a `char **' you pass with a
1926 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1927 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1928 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1930 * `mkstemp' is a traditional Unix function to atomically create and open a
1931 uniquely-named temporary file.
1935 * The standard location for the file that says what the local timezone is
1936 has changed again. It is now `/usr/local/etc/localtime' (or more
1937 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1939 * The distribution no longer contains any files with names longer than 14
1942 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1943 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1945 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1949 * The configuration process has changed quite a bit. The `configure'
1950 script is now used just like the configuration scripts for other GNU
1951 packages. The `sysdeps' directory hierarchy is much rearranged.
1952 The file `INSTALL' explains the new scheme in detail.
1954 * The header files no longer need to be processed into ANSI C and
1955 traditional C versions. There is just one set of files to install, and
1956 it will work with ANSI or old C compilers (including `gcc -traditional').
1958 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1959 MIPS DECStation running Ultrix 4.
1961 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1962 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1963 made itself into a shared library.
1965 * Yet further improved support for the i386, running 4.3 BSD-like systems
1966 (such as Mach 3 with the Unix single-server), or System V.
1968 * New function `strncasecmp' to do case-insensitive string comparison
1969 with limited length.
1971 * New function `strsep' is a reentrant alternative to `strtok'.
1973 * New functions `scandir' and `alphasort' for searching directories.
1975 * New function `setenv' is a better interface to `putenv'.
1977 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1978 function for traversing a directory tree.
1980 * The GNU obstack package is now also part of the C library.
1981 The new function `open_obstack_stream' creates a stdio stream that
1982 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1983 formatted output directly to an obstack.
1985 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1986 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1988 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1990 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1991 things to your strings.
1993 * There are some new test programs: test-fseek, testmb, and testrand.
1995 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1996 These ports are not finished, but are a good starting place for really
1997 supporting those systems.
1999 * `/etc/localtime' is now the standard location for the file that says what
2000 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2001 This follows the general principle that `/etc' is the place for all local
2002 configuration files.
2004 * The C library header files now use `extern "C"' when used by the C++
2005 compiler, so the C library should now work with C++ code.
2007 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2008 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2011 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2012 function which uses the `merge sort' algorithm, and is said to be
2013 significantly faster than the old GNU `qsort' function. Merge sort is
2014 now the standard `qsort' function. The new algorithm can require a lot
2015 of temporary storage; so, the old sorting function is called when the
2016 required storage is not available.
2018 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2019 provides the Unix `crypt' function, plus some other entry points.
2021 * The code and header files taken from 4.4 BSD have been updated with the
2022 latest files released from Berkeley.
2024 ----------------------------------------------------------------------
2025 Copyright information:
2027 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2029 Permission is granted to anyone to make or distribute verbatim copies
2030 of this document as received, in any medium, provided that the
2031 copyright notice and this permission notice are preserved,
2032 thus giving the recipient permission to redistribute in turn.
2034 Permission is granted to distribute modified versions
2035 of this document, or of portions of it,
2036 under the above conditions, provided also that they
2037 carry prominent notices stating who last changed them.
2040 version-control: never
projects / platform / upstream / glibc.git / blob