1 GNU C Library NEWS -- history of user-visible changes. 2012-1-27
2 Copyright (C) 1992-2009, 2010, 2011, 2012 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:
12 174, 350, 369, 411, 2541, 2547, 2548, 2551, 2552, 2553, 2554, 2562, 2563,
13 2565, 2566, 2576, 2678, 3335, 3866, 3868, 3976, 3992, 4026, 4108, 4596,
14 4822, 5077, 5461, 5805, 5993, 6471, 6730, 6884, 6907, 6911, 9739, 9902,
15 10110, 10135, 10140, 10210, 10545, 10716, 11174, 11322, 11365, 11451,
16 11494, 12047, 13058, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
17 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13559, 13566, 13583,
18 13618, 13637, 13656, 13658, 13673, 13695, 13704, 13706, 13726, 13738,
19 13760, 13761, 13786, 13792, 13806, 13824, 13840, 13841, 13844, 13846,
20 13851, 13852, 13854, 13871, 13879, 13883, 13892, 13910, 13911, 13912,
21 13913, 13915, 13916, 13917, 13918, 13919, 13920, 13921
25 + define static_assert
29 + declare at_quick_exit and quick_exit also for ISO C11
31 + aligned_alloc. NB: The code is deliberately allows the size parameter
32 to not be a multiple of the alignment. This is a moronic requirement
33 in the standard but it is only a requirement on the caller, not the
38 + uchar.h support added
40 + CMPLX, CMPLXF, CMPLXL added
42 Implemented by Ulrich Drepper.
44 * Support for the IA-64 is removed and could live in ports.
46 * Remove support for anything but ELF binary format
48 * Checking versions of poll, ppoll added.
49 Implemented by Ulrich Drepper.
51 * More generic and 64-bit performance optimizations to math functions.
52 Implemented by Ulrich Drepper.
56 * The following bugs are resolved with this release:
58 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
59 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
60 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
61 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
62 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
63 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
64 13484, 13506, 13515, 13523, 13524, 13538, 13540
66 * New program pldd to list loaded object of a process
67 Implemented by Ulrich Drepper.
69 * Add nss_db support back to glibc. No more dependency on Berkeley db
70 and support for initgroups lookups.
71 Implemented by Ulrich Drepper.
73 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
76 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
79 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
81 Contributed by Liubov Dmitrieva.
83 * Optimized strchr and strrchr for SSE on x86-32.
84 Contributed by Liubov Dmitrieva.
86 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
87 for x86-64 and x86-32.
88 Contributed by Liubov Dmitrieva.
90 * New interfaces: scandirat, scandirat64
91 Implemented by Ulrich Drepper.
93 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
94 Implemented by Ulrich Drepper.
96 * nscd now also caches the netgroup database.
97 Implemented by Ulrich Drepper.
99 * Integrate libm with gcc's -ffinite-math-only option.
100 Implemented by Ulrich Drepper.
102 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
103 to math functions. Implemented by Ulrich Drepper.
105 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
106 Implemented by Ulrich Drepper.
108 * New Linux interfaces: process_vm_readv, process_vm_writev
110 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
111 Implemented by Ulrich Drepper.
113 * Optimized nearbyint and strcasecmp for PPC.
114 Implemented by Adhemerval Zanella.
116 * New locales: bho_IN, unm_US, es_CU, ta_LK
120 * The following bugs are resolved with this release:
122 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
123 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
124 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
125 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
126 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
127 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
128 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
129 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
130 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
131 12795, 12811, 12813, 12814, 12841
133 * The RPC implementation in libc is obsoleted. Old programs keep working
134 but new programs cannot be linked with the routines in libc anymore.
135 Programs in need of RPC functionality must be linked against TI-RPC.
136 The TI-RPC implementation is IPv6 enabled and there are other benefits.
138 Visible changes of this change include (obviously) the inability to link
139 programs using RPC functions without referencing the TI-RPC library and the
140 removal of the RPC headers from the glibc headers.
141 Implemented by Ulrich Drepper.
143 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
144 syncfs, setns, sendmmsg
146 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
147 yue_HK, lij_IT, mhr_RU
149 * New encodings: CP770, CP771, CP772, CP773, CP774
151 * New program sotruss to trace calls through PLTs
152 Implemented by Ulrich Drepper.
154 * The malloc hook implementation is marked deprecated and will be removed
155 from the default implementation in the next version. The design never
156 worked ever since the introduction of threads. Even programs which do
157 not create threads themselves can use multiple threads created internally.
161 * The following bugs are resolved with this release:
163 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
164 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
165 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
166 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
169 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
171 * POWER7 optimizations: memset, memcmp, strncmp
173 * New optimized string functions for x86-64: strnlen (SSE2),
174 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
175 Implemented by Ulrich Drepper.
179 * The following bugs are resolved with this release:
181 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
182 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
183 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
184 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
185 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
186 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
187 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
188 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
190 * New interfaces: pthread_getname_np, pthread_setname_np
192 * New Linux interface: recvmmsg
194 * STT_GNU_IFUNC implemented for Sparc by David Miller.
196 * The dynamic linker now recognizes supported ABI versions from the
197 EI_ABIVERSION field in the ELF header.
198 Implemented by Ulrich Drepper.
200 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
201 will not be used to fill in password fields in the passwd.byname replies.
202 Instead it is used to synthesize the shadow.byname table, should it be
203 missing. This is a useful mode in some installations involving Solaris.
204 Implemented by Ulrich Drepper.
206 * New locales: kok_IN, sq_MK, cv_RU
210 * The following bugs are resolved with this release:
212 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
213 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
214 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
215 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
216 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
217 10789, 10817, 10823, 10840, 10847
219 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
221 Implemented by Ulrich Drepper.
223 * Checking version of longjmp added that fails if an uninitialized stack
224 frame would be created. Implemented by Ulrich Drepper.
226 * STT_GNU_IFUNC is now supported in static executables.
227 Implemented by H.J. Lu.
229 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
231 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
232 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
233 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
234 Contributed by H.J. Lu.
236 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
237 Implemented by Ulrich Drepper.
239 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
241 Contributed by H.J. Lu.
243 * Support for fma instruction in AVX on x86-64.
244 Implemented by H.J. Lu and Ulrich Drepper.
246 * AVX support in x86-64 auditing support in ld.so.
247 Implemented by H.J. Lu.
249 * STB_GNU_UNIQUE support added.
250 Implemented by Ulrich Drepper.
252 * Implement second fallback mode for optimized DNS lookup for even more
253 broken environments. If two requests from the same port are not
254 handled correctly close the socket and open a new one before sending
255 the second request. The 'single-request-reopen' option in /etc/resolv.conf
256 can be used to select this mode right away, instead of rediscovering the
257 necessity is every process again.
258 Implemented by Ulrich Drepper.
260 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
261 Implemented by Adam Tkac.
263 * Optimized iconv conversions for S390x.
264 Implemented by Andreas Krebbel.
266 * Using condvars with PI mutexes is now more efficient due to kernel
267 support for requeueing to PI futexes. NPTL support added for x86-64.
268 Implemented by Ulrich Drepper.
270 * New locales: ps_AF, my_MM
274 * The following bugs are resolved with this release:
276 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
277 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
278 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
279 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
280 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
282 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
283 Implemented by Ulrich Drepper.
285 * New Linux interfaces: accept4, fallocate, fallocate64.
286 Implemented by Ulrich Drepper.
288 * Correct declarations of string function when used in C++ code. This
289 could lead to compile errors for invalid C++ code.
291 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
294 * New POSIX 2008 interface: psiginfo
295 Implemented by Ulrich Drepper.
297 * New ISO C++1x interfaces: quick_exit, at_quick_exit
298 Implemented by Ulrich Drepper.
300 * Support for selecting between multiple function definitions at runtime
301 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
303 * The libcrypt library can now use the hash function implementations in
304 NSS. Implemented by Ulrich Drepper.
306 * The malloc implementation can be compiled to be less memory efficient
307 but higher performing in multi-threaded programs.
308 Implemented by Ulrich Drepper.
310 * New locales: nan_TW@latin, ks_IN
312 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
313 Implemented by Ulrich Drepper.
315 * Extended printf hook support. It is possible to use user-defined types
316 and extend existing format specifiers.
317 Implemented by Ulrich Drepper.
319 * Handling for group shadow files has been added.
320 Implemented by Ulrich Drepper.
322 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
323 servers (the case, e.g., for some people using the built-in DNS
324 server in ADSL modems/routers). There is a once-per-process timeout
325 in case of a broken server. To avoid it, users can run nscd or put
326 'options single-request' in /etc/resolv.conf.
327 Implemented by Ulrich Drepper.
331 * The following bugs are resolved with this release:
333 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
334 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
335 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
336 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
337 6968, 6974, 6980, 6995, 7008, 7009, 7029
339 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
340 up at the same time. Implemented by Ulrich Drepper.
342 * TLS descriptors for LD and GD on x86 and x86-64.
343 Implemented by Alexandre Oliva.
345 * getaddrinfo now handles DCCP and UDPlite.
346 Implemented by Ulrich Drepper.
348 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
349 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
350 Implemented by Ulrich Drepper.
352 * New implementation of memmem, strstr, and strcasestr which is O(n).
353 Implemented by Eric Blake.
355 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
357 * Implement "e" option for popen to open file descriptor with the
358 close-on-exec flag set. Implemented by Ulrich Drepper.
360 * Implement "b" mode for fmemopen. In this mode writes writes don't
361 implicitly add a NUL byte and seeks from the end of the buffer really
362 use the buffer end, not the string length as the basis.
363 Implemented by Ulrich Drepper.
365 * Many functions, exported and internal, now atomically set the close-on-exec
366 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
368 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
370 Implemented by Pravin Satpute.
372 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
376 * The following bugs are resolved with this release:
378 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
379 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
380 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
381 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
382 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
383 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
384 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
386 * New locales: bo_CN, bo_IN, shs_CA.
388 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
390 * Sorting rules for some Indian languages (Devanagari and Gujarati).
391 Implemented by Pravin Satpute.
393 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
395 * nscd caches now all timeouts for DNS entries
396 Implemented by Ulrich Drepper.
398 * nscd is more efficient and wakes up less often.
399 Implemented by Ulrich Drepper.
401 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
402 vdprintf, and obstack_vprintf.
403 Implemented by Jakub Jelinek.
405 * Faster memset for x86-64.
406 Implemented by Harsha Jagasia and H.J. Lu.
408 * Faster memcpy on x86.
409 Implemented by Ulrich Drepper.
411 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
412 Implemented by Ulrich Drepper.
414 * Faster sqrt and sqrtf implemention for some PPC variants.
415 Implemented by Stephen Munroe.
419 * The following bugs are resolved with this release:
421 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
422 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
423 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
424 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
425 5071, 5103, 5104, 5112, 5113, 5184, 5186
427 * More checking functions: fread, fread_unlocked, open*, mq_open.
428 Implemented by Jakub Jelinek and Ulrich Drepper.
430 * Extend fortification to C++. Implemented by Jakub Jelinek.
432 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
433 by not recognizing 'a' as a modifier when those specs are requested.
434 Implemented by Jakub Jelinek.
436 * PPC optimizations to math and string functions.
437 Implemented by Steven Munroe.
439 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
440 options to be passed. Implemented by Ulrich Drepper.
442 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
444 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
445 Implemented by Ulrich Drepper.
447 * Handle private futexes in the NPTL implementation.
448 Implemented by Jakub Jelinek and Ulrich Drepper.
450 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
451 Implemented by Roland McGrath and Ulrich Drepper.
453 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
455 * SHA-256 and SHA-512 based password encryption.
456 Implemented by Ulrich Drepper.
458 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
459 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
462 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
463 Implemented by Ulrich Drepper.
467 * The following bugs are resolved with this release:
469 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
470 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
471 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
472 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
473 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
474 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
475 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
478 * New Linux interfaces: epoll_pwait, sched_getcpu.
480 * New generic interfaces: strerror_l.
482 * nscd can now cache the services database. Implemented by Ulrich Drepper.
486 * The following bugs are resolved with this release:
488 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
489 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
490 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
491 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
492 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
493 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
494 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
495 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
496 3225, 3251, 3252, 3253, 3273
498 * For Linux, the sorting of addresses returned by getaddrinfo now also
499 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
500 Implemented by Ulrich Drepper.
502 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
503 Implemented by Ulrich Drepper.
505 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
507 * New iconv module for MIK. Contributed by Alexander Shopov.
509 * For sites with broken group and/or passwd database, the auto-propagate
510 option of nscd can prevent creating ID lookup entries from the results
511 of a name lookup and vice versa. This usually is no problem but some
512 site might have problems with the default behavior.
513 Implemented by Ulrich Drepper.
515 * Iterating over entire database in NIS can be slow. With the
516 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
517 to trade time for memory. The entire database will be read at once.
518 Implemented by Ulrich Drepper.
520 * The interfaces introduced in RFC 3542 have been implemented by
523 * Support for the new ELF hash table format was added by Ulrich Drepper.
525 * Support for priority inheritance mutexes added by Jakub Jelinek and
528 * Support for priority protected mutexes added by Jakub Jelinek.
530 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
531 or_IN, csb_PL, fy_NL, sr_ME.
535 * More overflow detection functions.
537 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
538 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
540 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
541 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
542 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
543 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
544 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
545 by Masahide Washizawa.
547 * It is now possible to install audit libraries for the dynamic linker using
548 LD_AUDIT. Implemented by Ulrich Drepper.
550 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
551 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
552 For a libc and libpthread that works well on Linux 2.4 kernels, we
553 recommend using the stable 2.3 branch.
555 * The new function open_wmemstream acts like open_memstream,
556 but uses a wchar_t wide character buffer.
558 * The new function ppoll is an improved version of poll, similar to pselect.
560 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
561 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
562 renameat, unlinkat, linkat, symlinkat, readlinkat.
564 * New Linux kernel system calls: unshare,
565 inotify_init, inotify_add_watch, inotify_rm_watch.
567 * The euidaccess function is now also known by the alias eaccess,
568 for compatibility with some other systems.
570 * Timezone data updated to 2006b version.
574 * The following bugs are resolved with this release:
576 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
577 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
578 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
579 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
580 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
581 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
583 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
585 * As of this release, GCC 4 can be used to compile the C Library.
587 * Timezone data updated to 2005m version.
591 * The following bugs are resolved with this release:
593 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
594 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
595 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
596 777, 787, 821, 822, 823, 825
598 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
602 * Support for RFC 3678. Real implementations exist only for Linux so far.
603 Implemented by Ulrich Drepper.
605 * nscd can now cache entries persistently. Expiring entries are reloaded.
606 For speedups the cache can be shared in memory with client processes.
607 Implemented by Ulrich Drepper.
609 * nscd can now perform SELinux checks.
610 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
612 * getaddrinfo queries are now cached. Canonical name lookup is performed
614 Implemented by Ulrich Drepper.
616 * The nothrow function attribute is used when headers are used by gcc when
617 compiling C code. This can avoid significant amounts of exception
620 * The malloc functions perform more error checking and are stricter when
621 it comes to reacting on errors. The default action is to terminate
622 the process after showing an error message. Implemented by Ulrich Drepper.
624 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
625 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
627 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
628 namespaces using the new function dlmopen(). This feature is of course,
629 like most other dynamic loading functionality, not available in statically
630 linked applications. Implemented by Ulrich Drepper.
632 * Low-overhead boundary checking variants of string and some stdio functions
633 were added. These are to be used in conjunction with a gcc patch by
634 Jakub Jelinek which adds calls to these functions if possible.
635 Implemented by Jakub Jelinek and Ulrich Drepper.
637 * Old code for several operating systems and machine architectures that
638 have not been in working condition in a long time have been removed from
639 the main source tree maintained by the GNU C Library's maintainers.
640 These files are now reside in the separate `ports' source module
641 that is usable as an add-on when building the library.
645 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
646 interrogate the dynamic linker, compatible with the Solaris interface.
648 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
649 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
651 * getifaddrs now uses the netlink interface on Linux to get its information.
652 Implemented by Thorsten Kukuk.
654 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
655 Implemented by Ulrich Drepper.
657 * support for non-executable stacks on x86 has been added. Changes mostly
660 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
663 * getaddrinfo now performs destination address selection according to
668 * Thread-safe interfaces for many functions that access locale data
669 were added in version 2.3, but these features were omitted from NEWS.
670 Many functions have variants with an `_l' suffix that take a `locale_t'
671 object as a parameter rather than consulting the current locale.
672 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
673 create and maintain `locale_t' objects. Additionally, the new function
674 `uselocale' sets "the current locale" (as used by functions not so
675 parameterized) set for an individual thread. These features were added
676 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
678 * The functions getresuid, getresgid, setresuid, and setresgid, which
679 have long been available on Linux, are now declared in <unistd.h>
680 and are now also available on the Hurd.
682 * ELF thread-local storage support (TLS) now works on x86-64.
684 * The new dynamic string token $LIB is expanded in shared library names.
685 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
687 * Aldy Hernandez contributed complete software floating point support for
688 PowerPC machines with no FPU.
690 * fexecve is implemented on Linux.
692 * The `btowc' function should work at least twice as fast due to
693 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
695 * With approriate thread add-ons cancelable functions are now implemented
696 in libc.so as well. No need to call the function in libpthread. This
697 change allowed to finally disable the incorrect and expensive handling
698 of weak definition in ld.so.
700 * Yet more PLT entries in libc.so have been removed. We finally arrived
701 at the bare minimum. Startup times improved appropriately.
703 * Support for the new Linux/x86 system call interface was added. The
704 AT_SYSINFO auxiliary vector entry is recognized and handled.
708 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
711 * iconv (the program and the interface) now accepts empty names (excluding
712 options like //TRANSLIT) to mean "use charset of current locale".
714 * localedef can now transliterate characters in strings which are not in
715 the provided charmap. The information from the input locale is used.
717 * Prelinking support was added for ELF targets. This requires additional
718 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
720 * Read-only stdio streams now use mmap to speed up operation by eliminating
721 copying and buffer underflows. To use add 'm' to the mode string of
722 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
724 * The malloc functions were completely rewritten by Wolfram Gloger based
725 on Doug Lea's malloc-2.7.0.c.
727 * Isamu Hasegawa contributed a completely new and POSIX-conformant
728 implementation of regex.
730 * Bruno Haible upgraded the iconv and locale implementation to support
733 * Contents of the LC_* and LANG environment variables in the CEN style are
734 not recognized anymore. It never was used. Change by Ulrich Drepper.
736 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
737 thread-local storage (TLS) ABI on some platforms.
738 Changes by Ulrich Drepper. SH support by Kaz Kojima.
740 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
741 EUC-JISX0213, and TSCII.
743 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
744 BSD-compatible interface for getting all network interface addresses.
745 Implementation for IPv4 by Roland McGrath.
747 * Loading of locale data is faster due to the introduction of a locale
748 archive. Implemented by Roland McGrath and Ulrich Drepper.
750 * Startup times are significantly reduced by not using exported functions
751 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
754 * Steven Munroe contributed a port to PowerPC64/Linux.
758 * The Hurd now uses the GNU libio implementation of stdio rather than the
759 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
761 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
762 with the same behavior as the Linux system call of the same name.
766 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
767 128-bit long double format.
769 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
770 IBM1161, and IBM1162 charsets.
772 * Andreas Jaeger contributed a port to x86-64/Linux.
774 * Peter Bruin contributed a port to PowerPC/Hurd.
776 * libc functions using I/O streams now can handle wide-oriented streams
779 * optimizations in the dynamic linker. Binaries created by recent binutils
780 versions start up quicker due to reduced time spent on relocations.
782 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
786 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
787 asinh, atanh, j0 for the 128-bit long double format.
789 * Bruno Haible updated all the code handling Unicode in some form to
792 * Speed of regex for single-byte locales is back to previous levels.
793 Patch by Isamu Hasegawa.
795 * Alpha, SPARC, and IA-64 now also using floating stacks.
797 * Startup time of internationalized applications greatly improved through
798 iconv cache. Use iconvconfig to generate the cache file.
799 Contributed by Ulrich Drepper.
801 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
802 severe performance problems. Patch by David Mosberger.
804 * The Hurd port got a lot more functionality like AIO, various stdio
805 extensions, etc. Mainly done by Roland McGrath.
807 * mtrace can now lookup symbols in shared libraries.
811 * Intel's IA-64 math library is largely integrated. It provides fast and
812 accurate implementatations for most basic and standard math functions
813 in float, double, and long double format.
815 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
816 and asin for the 96-bit long double format and asin, log, tan for the
817 128-bit long double format.
819 * The beginning of a last-bit accurate math library by IBM Haifa were added.
820 The basic double functions exist today. Contributed by Abraham Ziv
821 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
822 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
824 * An asynchronous name lookup library was added. The interface is designed
825 after POSIX AIO. The proposal was circulated beforehand to get comments.
826 No negative ones came in. Implemented by Ulrich Drepper.
828 * Port to S390/64bit contributed by Martin Schwidefsky
829 <schwidefsky@de.ibm.com>.
831 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
832 of functions for Linux/IA-64.
834 * The RPC code is now thread safe. Threads can now use the same service
835 of different services at the same time. Patch by Eric Norum
836 <eric.norum@usask.ca> with some help by Ulrich Drepper.
838 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
839 family of functions for Linux/S390.
841 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
842 of functions for Linux/x86.
844 * Port to Linux/CRIS contributed by Axis Communications.
848 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
849 we can now check for namespace violations and missing declarations. The
850 result is that almost all headers are now Unix-compliant (as defined in
851 the upcoming XPG6). The negative side is that some programs might need
852 corrections, too, if they depend on the incorrect form of the headers in
853 previous versions which defined too many symbols and included too many
856 * regex now handles multibyte character sets correctly.
857 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
859 * iconv (the program) does now conform to the upcoming XPG6 and handles
860 charmaps. Instead of the charset names the path of charmaps can be
861 provided and the conversion happens based on this data.
862 Contributed by Ulrich Drepper.
864 * The locale program now provides detailed information about the installed
869 only lists the names of the supported locales
873 provides details such as country, language, and codeset name.
874 Contributed by Ulrich Drepper.
878 * The gencat program now parses the input file according to the charset
879 selected by the LC_CTYPE category. This is important for stateful
880 character sets. To make generating catalogs easier there is a way
881 to overwrite the charset selected by the locale: before the first
882 message or $ quote line the catalog can contain a line like
886 to select the charset (ISO-8859-2 in this case).
888 Implemented by Shinya Hanataka and Ulrich Drepper.
890 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
891 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
892 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
894 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
895 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
897 * The LANGUAGE environment variable is now ignored unless the locale is
898 changed from the default "C" locale.
900 * The usual bug fixes.
904 * Greg McGary added runtime support for bounds checking using gcc's
905 new -fbounded-pointers option. ix86 target is complete. PowerPC
908 * Thorsten Kukuk added secure mode support to nscd.
910 * The Berkeley db libraries have been removed.
912 Related, the nss_db module is now in a separate package since it
913 obviously requires a database library being available.
915 * Wide character I/O streams implemented by Ulrich Drepper.
917 * Functions from the extended socket API added by Ulrich Drepper.
919 * Functions feenableexcept and fedisableexcept to control the
920 behaviour of individual exceptions have been added by Andreas Jaeger.
922 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
924 * The resolver code has been updated from bind 8.2.3-T5B which supports
925 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
928 This change could in some situations effect backward compatibility. Since
929 now `_res' is a thread-local instead of a global variable, modifying it
930 in one thread does not have any effect in other threads.
932 The resolver library was also extended to allow IPv6 as the transport
933 protocol for the requests. This work was done by Stig Venaas.
935 * Compatibility code for K&R C compilers has been removed from the
936 header files. A ISO C compiler is needed to use the library
937 (conforming to either C89 or C99 standard).
939 * Complete rewrite of the localedef program to support multibyte character
940 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
941 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
942 Implemented by Ulrich Drepper.
944 Bruno Haible significantly improved the generation and use of the data
945 structures for the wide character tables.
947 * Plural handling in gettext implemented by Ulrich Drepper.
949 * The utmp daemon has been removed.
951 * The port to MIPS-Linux has been finished by Andreas Jaeger.
953 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
956 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
958 * POSIX barriers implemented by Kaz Kylheku.
960 * POSIX spawn function family implemented by Ulrich Drepper.
962 * POSIX spinlocks are now available.
964 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
966 * the configure option --enable-kernel=X.Y.Z allows to strip out
967 compatibility for kernel versions before X.Y.Z. This is currently only
968 implemented for Linux.
970 * the sockaddr_in6 structure changed. The IPv6 working group added a new
971 field sin6_scope_id. This means that all programs using IPv6 should be
972 recompiled. Don't expect binary compatibility with previous glibc
975 * various conversion modules for IBM character sets contributed by
978 * IA-64 port by Jes Sorensen and HJ Lu.
980 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
981 Compiling the GNU C Library for Linux/ia64
982 ******************************************
984 Please refer to the file INSTALL in the same directory as you found
985 this file for general information about configuring and compiling
988 For general inquiries about glibc under Linux/ia64 please use the
989 following mailing list linux-ia64@linuxia64.org or one of the relevant
992 Recommended Tools for Compilation
993 =================================
995 In order for glibc-2.2 to build correctly on the ia64 you need at
996 least the following versions of the GNU tools (the :
998 * The Cygnus toolchain snapshot for the ia64 as of August 4
999 including the provided set of patches. It is however recommend
1000 you use the October 24 toolchain snapshot or a more recent version.
1002 OR alternatively you can try the following (the Cygnus toolchain is
1003 the recommended solution):
1005 * GCC and binutils, GAS and GNU LD out of CVS from
1006 sources.redhat.com as of August 28, 2000 or later. The CVS tree
1007 may require special patches to work properly on the ia64.
1009 Configuring and compiling GNU Libc for Linux/ia64
1010 =================================================
1012 The library requires Linux kernel version 2.4.0-test4-000728 or
1013 later to funtion properly. Besides that it support for debug libraries
1014 is currently untested. Hence the following options
1015 are required for configuring the library:
1017 --disable-debug --enable-kernel=2.4.0
1019 It is also important that you make sure the library picks up the
1020 appropriate kernel header files, if you do not have recent enough
1021 kernel headers in /usr/src/linux/include, you should use the
1022 --with-headers=<path> option to specify the location.
1024 As an example I personally use the following options to configure
1029 --enable-kernel=2.4.0
1031 --enable-add-ons=yes
1033 --with-headers=/home/jes/linux/include
1038 Jes Sorensen <jes@linuxcare.com>,
1040 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1054 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1056 * New xdr functions are added; some rpc functions are now 64bit clean.
1058 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1060 * Fixed known incompatibilities with glibc 2.0.
1062 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1064 * Optimized a number of functions (especially the ELF dynamic loader).
1066 * Update timezone data files.
1068 * lots of charmaps corrections
1070 * some new locale definitions and charmaps
1075 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1076 conform to POSIX member type requirements. Symbol versions have been
1077 adjusted as needed within the library, and for direct use by applications,
1078 but there is potential for problems if third-party libraries use
1079 struct timeval as part of their interface. This does not present
1080 a problem for X and other "essential" system libraries.
1082 * An additional locale model to support C++ Standard Library locale
1083 model and probably more was implemented by Ulrich Drepper.
1085 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1088 * Miles Bader provided the `argp' function family to support hierachical
1089 command line argument parsing, layered on top of getopt.
1091 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1093 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1096 * scanf recognizes the %a and %A format for scanning floating point numbers.
1098 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1099 information and interfaces for the available integer types.
1101 * about 130 new math functions were added to implement the ISO C9x math
1104 * the new header <complex.h> contains definitions of the complex math
1105 functions from ISO C 9X.
1107 * the new header <tgmath.h> defines generic macros to use complex or
1108 real valued functions.
1110 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1112 * Andreas Jaeger provided a test suite for the math library.
1114 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1116 * Ulrich Drepper added character set conversion functions (iconv).
1118 * Optimized string functions have been added.
1120 * The localedata addon is now part of glibc.
1122 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1124 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1125 daemon for NSS (nscd).
1127 Missing a better place here are some numbers on improvements. Under
1128 Linux 2.1.125 un-tar-ing the kernel sources takes
1132 using local files 12.19s 6.88s 22.91s
1134 using NIS 13.92s 8.91s 26.34s
1136 using NIS & nscd 10.37s 7.34s 25.30s
1138 using NIS+ 27.57s 30.37s 640.46s
1140 using NIS+ & nscd 10.25s 7.83s 26.51s
1142 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1144 Keep in mind that non-namelookup related operations dominate above times.
1145 It was just a common complain that using NIS+ unpacking the kernel is
1148 [1] The old nscd implementation is not available anymore since it was
1149 distributed with glibc up to version 2.0.98 and thus is now replaced.
1151 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1153 * Mark Kettenis provided a Hesiod NSS module.
1155 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1156 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1158 * rcmd can now handle netgroups (Dick Streefland).
1160 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1163 * Support for the IPv6 protocol has been added to the socket API, as per the
1164 latest draft standards.
1166 * Support for Linux 2.2 has been added.
1168 * Interface changes relative to the latest 2.0.x release:
1169 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1170 addseverity NEW: Unix98
1171 alphasort64 NEW: LFS
1172 argp_err_exit_status NEW: argp, GNU ext
1173 argp_error NEW: argp, GNU ext
1174 argp_failure NEW: argp, GNU ext
1175 argp_help NEW: argp, GNU ext
1176 argp_parse NEW: argp, GNU ext
1177 argp_program_bug_address NEW: argp, GNU ext
1178 argp_program_version NEW: argp, GNU ext
1179 argp_program_version_hook NEW: argp, GNU ext
1180 argp_state_help NEW: argp, GNU ext
1181 argp_usage NEW: argp, GNU ext
1182 authdes_create NEW: Secure RPC
1183 authdes_getucred NEW: Secure RPC
1184 authdes_pk_create NEW: Secure RPC
1185 backtrace NEW: GNU ext.
1186 backtrace_symbols NEW: GNU ext.
1187 backtrace_symbols_fd NEW: GNU ext.
1189 cacosf NEW: ISO C 9x
1190 cacosh NEW: ISO C 9x
1191 cacoshf NEW: ISO C 9x
1192 cacoshl NEW: ISO C 9x
1193 cacosl NEW: ISO C 9x
1200 casinf NEW: ISO C 9x
1201 casinh NEW: ISO C 9x
1202 casinhf NEW: ISO C 9x
1203 casinhl NEW: ISO C 9x
1204 casinl NEW: ISO C 9x
1206 catanf NEW: ISO C 9x
1207 catanh NEW: ISO C 9x
1208 catanhf NEW: ISO C 9x
1209 catanhl NEW: ISO C 9x
1210 catanl NEW: ISO C 9x
1211 cbc_crypt NEW: Secure RPC
1215 ccoshf NEW: ISO C 9x
1216 ccoshl NEW: ISO C 9x
1222 cimagf NEW: ISO C 9x
1223 cimagl NEW: ISO C 9x
1224 clearerr_locked REMOVED
1225 clntunix_create NEW: sunrpc ext
1227 clog10 NEW: ISO C 9x
1228 clog10f NEW: ISO C 9x
1229 clog10l NEW: ISO C 9x
1239 cprojf NEW: ISO C 9x
1240 cprojl NEW: ISO C 9x
1242 crealf NEW: ISO C 9x
1243 creall NEW: ISO C 9x
1248 csinhf NEW: ISO C 9x
1249 csinhl NEW: ISO C 9x
1252 csqrtf NEW: ISO C 9x
1253 csqrtl NEW: ISO C 9x
1257 ctanhf NEW: ISO C 9x
1258 ctanhl NEW: ISO C 9x
1260 des_setparity NEW: Secure RPC
1261 ecb_crypt NEW: Secure RPC
1262 endutxent NEW: Unix98
1264 exp10f NEW: ISO C 9x
1265 exp10l NEW: ISO C 9x
1269 fattach NEW: STREAMS
1270 fdetach NEW: STREAMS
1274 feclearexcept NEW: ISO C 9x
1275 fegetenv NEW: ISO C 9x
1276 fegetexceptflag NEW: ISO C 9x
1277 fegetround NEW: ISO C 9x
1278 feholdexcept NEW: ISO C 9x
1280 feraiseexcept NEW: ISO C 9x
1281 ferror_locked REMOVED
1282 fesetenv NEW: ISO C 9x
1283 fesetexceptflag NEW: ISO C 9x
1284 fesetround NEW: ISO C 9x
1285 fetestexcept NEW: ISO C 9x
1286 feupdateenv NEW: ISO C 9x
1287 fflush_locked REMOVED
1291 fgets_unlocked NEW: GNU ext.
1292 fileno_locked REMOVED
1304 fputc_locked REMOVED
1305 fputs_unlocked NEW: GNU ext.
1306 fread_unlocked NEW: GNU ext.
1311 fstatvfs NEW: Unix98
1315 ftruncate64 NEW: LFS
1317 fwrite_unlocked NEW: GNU ext.
1318 gai_strerror NEW: IPv6
1322 getchar_locked REMOVED
1324 getdate_err NEW: Unix98
1325 getdate_r NEW: GNU ext.
1327 getnameinfo NEW: IPv6
1328 getnetname NEW: Secure RPC
1329 getpmsg NEW: STREAMS
1330 getpt NEW: Unix98 PTY
1331 getrlimit64 NEW: LFS
1332 getutxent NEW: Unix98
1333 getutxid NEW: Unix98
1334 getutxline NEW: Unix98
1335 glob64 NEW: GNU ext.
1336 globfree64 NEW: GNU ext.
1337 gnu_get_libc_release NEW: GNU ext.
1338 gnu_get_libc_version NEW: GNU ext.
1339 grantpt NEW: Unix98 PTY
1340 host2netname NEW: Secure RPC
1342 iconv_close NEW: iconv
1343 iconv_open NEW: iconv
1344 if_freenameindex NEW: IPv6
1345 if_indextoname NEW: IPv6
1346 if_nameindex NEW: IPv6
1347 if_nametoindex NEW: IPv6
1348 in6addr_any NEW: IPv6
1349 in6addr_loopback NEW: IPv6
1350 inet6_isipv4mapped NEW: IPv6
1351 isastream NEW: STREAMS
1352 iswblank NEW: GNU ext.
1353 key_decryptsession NEW: Secure RPC
1354 key_decryptsession_pk NEW: Secure RPC
1355 key_encryptsession NEW: Secure RPC
1356 key_encryptsession_pk NEW: Secure RPC
1357 key_gendes NEW: Secure RPC
1358 key_get_conv NEW: Secure RPC
1359 key_secretkey_is_set NEW: Secure RPC
1360 key_setnet NEW: Secure RPC
1361 key_setsecret NEW: Secure RPC
1362 llrint NEW: ISO C 9x
1363 llrintf NEW: ISO C 9x
1364 llrintl NEW: ISO C 9x
1365 llround NEW: ISO C 9x
1366 llroundf NEW: ISO C 9x
1367 llroundl NEW: ISO C 9x
1372 lrintf NEW: ISO C 9x
1373 lrintl NEW: ISO C 9x
1374 lround NEW: ISO C 9x
1375 lroundf NEW: ISO C 9x
1376 lroundl NEW: ISO C 9x
1378 makecontext NEW: Unix98
1379 mempcpy NEW: GNU ext.
1382 modify_ldt NEW: kernel
1386 nearbyint NEW: ISO C 9x
1387 nearbyintf NEW: ISO C 9x
1388 nearbyintl NEW: ISO C 9x
1389 netname2host NEW: Secure RPC
1390 netname2user NEW: Secure RPC
1391 nexttoward NEW: ISO C 9x
1392 nexttowardf NEW: ISO C 9x
1393 nexttowardl NEW: ISO C 9x
1397 passwd2des NEW: Secure RPC
1399 pow10f NEW: GNU ext.
1400 pow10l NEW: GNU ext.
1403 printf_size NEW: GNU ext.
1404 printf_size_info NEW: GNU ext.
1405 profil_counter REMOVED
1406 pthread_mutexattr_getkind_np REPLACED
1407 pthread_mutexattr_setkind_np REPLACED
1408 ptsname NEW: Unix98 PTY
1409 ptsname_r NEW: Unix98 PTY
1411 putchar_locked REMOVED
1412 putgrent NEW: GNU ext.
1414 putpmsg NEW: STREAMS
1415 pututxline NEW: Unix98
1419 readdir64_r NEW: LFS
1420 remquo NEW: ISO C 9x
1421 remquof NEW: ISO C 9x
1422 remquol NEW: ISO C 9x
1424 roundf NEW: ISO C 9x
1425 roundl NEW: ISO C 9x
1427 scalbln NEW: ISO C 9x
1428 scalblnf NEW: ISO C 9x
1429 scalblnl NEW: ISO C 9x
1431 sendfile NEW: kernel
1432 setcontext NEW: Unix98
1433 setrlimit64 NEW: LFS
1434 setutxent NEW: Unix98
1436 sigignore NEW: Unix98
1437 sigqueue NEW: POSIX.1b
1438 sigrelse NEW: Unix98
1439 sigset NEW: POSIX.1b
1440 sigtimedwait NEW: POSIX.1b
1441 sigwaitinfo NEW: POSIX.1b
1442 sincos NEW: GNU ext.
1443 sincosf NEW: GNU ext.
1444 sincosl NEW: GNU ext.
1448 strcasestr NEW: GNU ext.
1449 strtoimax NEW: ISO C 9x
1450 strtoumax NEW: ISO C 9x
1451 strverscmp NEW: GNU ext.
1452 svcauthdes_stats NEW: Secure RPC
1453 svcunix_create NEW: sunrpc etx
1454 svcunixfd_create NEW: sunrpc ext
1455 swapcontext NEW: Unix98
1456 tcgetsid NEW: Unix98 PTY
1457 tdestroy NEW: GNU ext.
1458 tgamma NEW: ISO C 9x
1459 tgammaf NEW: ISO C 9x
1460 tgammal NEW: ISO C 9x
1464 truncf NEW: ISO C 9x
1465 truncl NEW: ISO C 9x
1467 unlockpt NEW: Unix98 PTY
1468 updwtmpx NEW: Unix98
1469 user2netname NEW: Secure RPC
1470 utmpxname NEW: Unix98
1471 versionsort NEW: GNU ext.
1472 versionsort64 NEW: GNU ext.
1474 wcscasecmp NEW: GNU ext.
1475 wcsncasecmp NEW: GNU ext.
1476 wcsnlen NEW: GNU ext.
1477 wcstoimax NEW: ISO C 9x
1478 wcstoll NEW: ISO C 9x
1479 wcstoull NEW: ISO C 9x
1480 wcstoumax NEW: ISO C 9x
1482 wordexp NEW: POSIX.2
1483 wordfree NEW: POSIX.2
1484 write_profiling REMOVED
1485 xdecrypt NEW: Secure RPC
1486 xdr_authdes_cred NEW: Secure RPC
1487 xdr_authdes_verf NEW: Secure RPC
1488 xdr_cryptkeyarg NEW: Secure RPC
1489 xdr_cryptkeyarg2 NEW: Secure RPC
1490 xdr_cryptkeyres NEW: Secure RPC
1491 xdr_getcredres NEW: Secure RPC
1492 xdr_key_netstarg NEW: Secure RPC
1493 xdr_key_netstres NEW: Secure RPC
1494 xdr_keybuf NEW: Secure RPC
1495 xdr_keystatus NEW: Secure RPC
1496 xdr_netnamestr NEW: Secure RPC
1497 xdr_sizeof NEW: Secure RPC
1498 xdr_unixcred NEW: sunrpc ext
1499 xencrypt NEW: Secure RPC
1500 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1511 * inet_ntoa is thread-safe
1513 * updwtmp is moved from libutil to libc
1515 * rewrite of cbrt function
1517 * update of timezone data
1531 * add atoll function
1533 * fix complex problems in Berkeley DB code
1535 * fix math functions
1539 * fixed lots of header problems (especially Linux/GNU specific)
1541 * dynamic loader preserves all registers
1543 * Roland McGrath provided support for handling of auxiliary objects in
1544 the ELF dynamic loader.
1546 * support for parallel builds is improved
1550 * GNU extensions are no longer declared by default. To enable them you
1551 must define the macro `_GNU_SOURCE' in your program or compile with
1554 * The library has changed from using GNU ld symbol aliases to using weak
1555 symbols where available. The ELF object file format supports weak
1556 symbols; GNU ld also supports weak symbols in the a.out format. (There
1557 is also now support for other GNU ld extensions in ELF. Use the
1558 `--with-elf' option to configure to indicate you have ELF, and
1559 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1560 of many files which contained only symbol aliases, reducing the size of
1561 the source and the compiled library; many other files were renamed to
1562 less cryptic names previously occupied by the symbol alias files.
1563 There is a new header file <elf.h> for programs which operate on
1564 files in the ELF format.
1566 * Converted to Autoconf version 2, so `configure' has more options.
1567 Run `configure --help' to see the details.
1569 * The library can now be configured to build profiling, highly-optimized
1570 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1571 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1572 `configure' enable building these extra libraries. The shared library is
1573 built by default when using both ELF and GNU ld. When shared libraries
1574 are enabled, the new library `-ldl' is available for arbitrary run-time
1575 loading of shared objects; its interface is defined in <dlfcn.h>. The
1576 new header file <link.h> gives access to the internals of the run-time
1577 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1578 application of same name on other systems and it provides information
1579 about dynamically linked binaries.
1581 * The C library now provides the run-time support code for profiling
1582 executables compiled with `-pg'. Programs can control the profiling code
1583 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1584 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1585 the support for this file format was contributed by David Mosberger-Tang.
1587 * The math code has been replaced with a math library based on fdlibm from
1588 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1589 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1590 functions. The math functions now reside in a separate library, so
1591 programs using them will need to use `-lm' their linking commands.
1593 * John C. Bowman contributed optimized ix87 assembler inline functions.
1595 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1596 mechanism similar to that found in Solaris 2. This is now used for the
1597 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1598 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1599 file controls what services are used for each individual database. This
1600 works by loading shared libraries with names specified in `nsswitch.conf',
1601 so service modules can be changed or added at any time without even
1602 relinking any program. Currently there are the file, db, and NIS based
1603 NSS services available.
1605 * The new functions `strtoq' and `strtouq' parse integer values from
1606 strings, like `strtol' and `strtoul', but they return `long long int' and
1607 `unsigned long long int' values, respectively (64-bit quantities).
1609 * The new functions `strtof' and `strtold' parse floating-point values from
1610 strings, like `strtod', but they return `float' and `long double' values,
1611 respectively (on some machines `double' and `long double' are the same).
1613 * Ulrich Drepper has contributed new implementations of the floating-point
1614 printing and reading code used in the `printf' family of functions and
1615 `strtod', `strtof', and `strtold'. These new functions are perfectly
1616 accurate, and much faster than the old ones.
1618 * The implementation of the POSIX locale model was completely rewritten by
1619 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1620 to compile the POSIX locale definition.
1622 * The former dummy implementations of the strcoll and strxfrm function are
1623 now replaced by fully functional code contributed by Ulrich Drepper. The
1624 collation information comes from the POSIX locale definitions.
1626 * The new header <langinfo.h> defines an interface for accessing
1627 various locale-dependent data (using the locale chosen with `setlocale').
1629 * Ulrich Drepper has contributed a new suite of functions for operation on
1630 wide-character and multibyte-character strings, in <wchar.h>;
1631 and classification and case conversion of wide characters, in <wctype.h>.
1632 These new functions are conforming to the ISO C, Amendement 1 specification.
1634 * There is now a second implementation of the standard I/O library available.
1635 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1636 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1638 * You can now use positional parameter specifications in format strings
1639 for the `printf' and `scanf' families of functions. For example,
1640 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1641 ``Number 6, Mr Jones''. This is mainly useful when providing different
1642 format strings for different languages, whose grammars may dictate
1643 different orderings of the values being printed. To support this
1644 feature, the interface for `register_printf_handler' has changed; see
1645 the header file <printf.h> for details.
1647 * The `printf' and `scanf' families of functions now understand a new
1648 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1649 to group numbers as indicated by the locale; for `scanf' and friends, this
1650 says to accept as valid only a number with all the proper grouping
1651 separators in the right places. In the default "C" locale, numbers are
1652 not grouped; but locales for specific countries will define the usual
1653 conventions (i.e. separate thousands with `,' in the US locale).
1655 * The pgrp functions have been regularized, slightly incompatibly but much
1656 less confusingly. The core functions are now `getpgid' and `setpgid',
1657 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1658 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1659 provided for compatibility. There is no longer an incompatible `getpgrp'
1660 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1662 * The new header file <fts.h> and suite of functions simplify programs that
1663 operate on directory trees. This code comes from 4.4 BSD.
1665 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1666 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1667 NSS scheme used in glibc.
1669 * There is a new malloc debugging hook `__memalign_hook'.
1671 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1672 `unsigned int' in <sys/types.h>. These are for compatibility only and
1673 their use is discouraged.
1675 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1676 done differently, so that it works even without GNU ld.
1678 * New function `euidaccess' checks allowed access to a file like `access',
1679 but using the effective IDs instead of the real IDs.
1681 * The time zone data files have been updated for the latest and greatest
1682 local time conventions of the countries of the world.
1684 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1687 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1688 for formatting floating-point numbers. They are provided only for
1689 compatibility; new programs should use `sprintf' instead. There are
1690 also equivalent function for the `long double' floating-point type and
1691 all functions also exist in a reentrant form.
1693 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1694 functions for maintaining the login-record files (primarily of use to
1695 system programs such as `login'), and convenient functions for
1696 allocating and initializing a pseudo-terminal (pty) device.
1698 * Ulrich Drepper has contributed new support for System V style
1699 shared memory and IPC on systems that support it.
1701 * Ulrich Drepper has contributed several miscellaneous new functions found
1702 in System V: The `hsearch' family of functions provide an effective
1703 implementation of hash tables; `a64l' and `l64a' provide a very simple
1704 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1707 * Ulrich Drepper has contributed new reentrant counterparts for the
1708 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1710 * Ulrich Drepper has contributed new, highly-optimized versions of several
1711 string functions for the i486/Pentium family of processors.
1713 * Ulrich Drepper has updated the Linux-specific code, based largely
1714 on work done in Hongjiu Lu's version of GNU libc for Linux.
1715 The GNU library now supports Linux versions 2.0.10 and later,
1716 using the ELF object file format (i[3456]86-*-linux).
1718 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1720 * David Mosberger-Tang and Richard Henderson have ported the C library
1721 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1722 dynamic linking support for ELF/Alpha.
1724 * Richard Henderson contributed several Alpha optimized assembler function
1725 for arithmetic and string handling.
1727 * Ulrich Drepper has contributed a new set of message catalog functions to
1728 support multiple languages using the <libintl.h> interface, for use with
1729 his new package GNU gettext. Translation volunteers have contributed
1730 catalogs of the library's messages in Spanish, German, and Korean.
1732 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1733 program and the `catgets' function for reading the catalog files it
1734 creates. (The <libintl.h> interface is preferred; we include the
1735 <nl_types.h> interface using `catgets' only for source compatibility with
1736 programs already written to use it.)
1738 * New header file <values.h> gives SVID-compatible names for <limits.h>
1741 * Various new macros, declarations, and small header files for compatibility
1744 * New function `group_member' is a convenient way to check if a process has
1745 a given effective group ID.
1747 * When using GCC 2.7 and later, the socket functions are now declared in a
1748 special way so that passing an argument of type `struct sockaddr_in *',
1749 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1750 `struct sockaddr *' type, does not generate a type-clash warning.
1752 * New function `error' declared in header file <error.h> is a convenient
1753 function for printing error messages and optionally exiting; this is the
1754 canonical function used in GNU programs. The new functions `err', `warn',
1755 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1756 doing the same thing.
1758 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1759 POSIX.2 `glob' function to do ~ and {...} expansion.
1761 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1762 `clearenv' which is used in POSIX.9 is also available.
1764 * New function `getsid' returns session ID number on systems that support it.
1766 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1767 files <db.h> and <mpool.h> provide a rich set of functions for several
1768 types of simple databases stored in memory and in files, and <ndbm.h> is
1769 an old `ndbm'-compatible interface using the `db' functions. Link with
1770 `-ldb' to get these functions.
1772 * New macro `strdupa' copies a string like `strdup', but uses local stack
1773 space from `alloca' instead of dynamic heap space from `malloc'.
1775 * New function `strnlen' is like `strlen' but searches only a given maximum
1776 number of characters for the null terminator. `stpncpy', `strndup' and
1777 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1780 * New function `statfs' in header <sys/statfs.h>.
1782 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1783 provide convenient functions for operating on blocks of null-terminated
1786 * A new suite of functions in <utmp.h> handle all the details of reading
1787 and writing the utmp file.
1789 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1792 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1793 completely POSIX compliant and also implemented the extended functionality
1794 to handle alternate digit representation and alternate era date formats.
1796 * Ulrich Drepper provided an implementation of the `strptime' function
1797 defined in XPG4.2 which transforms a string into a `struct tm' value.
1799 * Paul Eggert provided the tzselect shell script as part of the timezone
1800 code. The shell script makes it easy to select the correct timezone
1803 * The implementation of the malloc family of functions is completely replaced
1804 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1805 The implementation uses the mmap function (if available) and it is
1806 optimized for the use in multi threaded programs.
1808 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1809 functions. This new functionality is usable by specifying a special
1810 salt string and it is compatible with implementation on *BSD systems.
1812 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1813 `getsubopt' to handle second level command line options, `bsd_signal'
1814 to access BSD style `signal' functionality, the obsolete `regexp' style
1817 * the `lchown' function is available on system which support this
1820 * The implementation of the shadow password handling function was contributed
1823 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1825 * POSIX.1g support was added. The <sys/select.h> header is available,
1826 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1827 implementation of `getaddrinfo'.
1831 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1833 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1834 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1836 * The new function `daemon' from 4.4 BSD is useful for server programs that
1837 want to put themselves in the background.
1839 * Joel Sherrill has contributed support for several standalone boards that
1840 run without an operating system.
1842 * `printf', `scanf' and friends now accept a `q' type modifier for long
1843 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1845 * All of the code taken from BSD (notably most of the math and networking
1846 routines) has been updated from the BSD 4.4-Lite release.
1848 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1850 * The new functions `getdomainname' and `setdomainname' fetch or change the
1851 YP/NIS domain name. These are system calls which exist on systems which
1854 * The time zone data files have been updated for the latest international
1857 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1858 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1862 * The C library now includes support for Sun RPC, from Sun's free
1863 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1864 are included. (There is still no support for YP.)
1866 * Tom Quinn has contributed a port of the C library to SGI machines running
1867 Irix 4 (mips-sgi-irix4).
1869 * The new `lockf' function is a simplified interface to the locking
1870 facilities of `fcntl', included for compatibility.
1872 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1874 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1876 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1879 * The error message printed by `assert' for a failed assertion now includes
1880 the name of the program (if using GNU ld) and the name of the calling
1881 function (with versions of GCC that support this).
1883 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1885 * The library now includes the <sys/mman.h> header file and memory
1886 management functions `mmap', `munmap', `mprotect', `msync', and
1887 `madvise', on systems that support those facilities.
1889 * The interface for `mcheck' has changed slightly: the function called to
1890 abort the program when an allocation inconsistency is detected now takes
1891 an argument that indicates the type of failure. The new function
1892 `mprobe' lets you request a consistency check for a particular block at
1893 any time (checks are normally done only when you call `free' or `realloc'
1896 * It is now possible to easily cross-compile the C library, building on one
1897 system a library to run on another machine and/or operating system. All
1898 you need to do is set the variable `HOST_CC' in `configparms' to the
1899 native compiler for programs to run on the machine you are building on (a
1900 few generator programs are used on Unix systems); set `CC' to the
1903 * The new function `fexecve' (only implemented on the GNU system) executes
1904 a program file given a file descriptor already open on the file.
1908 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1909 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1911 * You can set the variable `libprefix' in `configparms' to specify a prefix
1912 to be prepended to installed library files; this makes it easy to install
1913 the GNU C library to be linked as `-lgnuc' or whatever.
1915 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1916 copies a limited number of characters from a string, and returns the
1917 address of the last character written.
1919 * You no longer need to check for whether the installed `stddef.h' is
1920 compatible with the GNU C library. configure now checks for you.
1922 * You can now define a per-stream `fileno' function to convert the
1923 stream's cookie into an integral file descriptor.
1925 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1926 allocates zero bytes of storage, and returns a unique pointer which
1927 you can pass to `realloc' or `free'. The behavior is undefined if
1928 you dereference this pointer.
1930 * The C library now runs on Sony NEWS m68k machines running either
1931 NewsOS 3 or NewsOS 4.
1933 * The new `syscall' function is a system-dependent primitive function
1934 for invoking system calls. It has the canonical behavior on Unix
1935 systems, including unreliable return values for some calls (such as
1936 `pipe', `fork' and `getppid').
1938 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1939 to `EAGAIN', which is the preferred name. On systems whose kernels
1940 use two distinct codes, the C library now translates EWOULDBLOCK to
1941 EAGAIN in every system call function.
1945 * The GNU C Library Reference Manual is now distributed with the library.
1946 `make dvi' will produce a DVI file of the printed manual.
1947 `make info' will produce Info files that you can read on line using C-h i
1948 in Emacs or the `info' program.
1949 Please send comments on the manual to bug-glibc-manual@gnu.org.
1951 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1953 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1955 * Jason Merrill has contributed a port to the Sequent Symmetry running
1956 Dynix version 3 (i386-sequent-dynix).
1958 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1959 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1961 * New function `memory_warnings' lets you arrange to get warnings when
1962 malloc is running out of memory to allocate, like Emacs gives you.
1964 * The C library now contains the relocating allocator used in Emacs 19 for
1965 its editing buffers. This allocator (ralloc) minimizes allocation
1966 overhead and fragmentation by moving allocated regions around whenever it
1967 needs to. You always refer to a ralloc'd region with a "handle" (a
1968 pointer to a pointer--an object of type `void **').
1970 * There is a new `printf' format: `%m' gives you the string corresponding
1971 to the error code in `errno'.
1973 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1974 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1975 pass, the `a' modifier says to fill in a `char **' you pass with a
1978 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1979 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1980 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1982 * `mkstemp' is a traditional Unix function to atomically create and open a
1983 uniquely-named temporary file.
1987 * The standard location for the file that says what the local timezone is
1988 has changed again. It is now `/usr/local/etc/localtime' (or more
1989 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1991 * The distribution no longer contains any files with names longer than 14
1994 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1995 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1997 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2001 * The configuration process has changed quite a bit. The `configure'
2002 script is now used just like the configuration scripts for other GNU
2003 packages. The `sysdeps' directory hierarchy is much rearranged.
2004 The file `INSTALL' explains the new scheme in detail.
2006 * The header files no longer need to be processed into ANSI C and
2007 traditional C versions. There is just one set of files to install, and
2008 it will work with ANSI or old C compilers (including `gcc -traditional').
2010 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2011 MIPS DECStation running Ultrix 4.
2013 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2014 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2015 made itself into a shared library.
2017 * Yet further improved support for the i386, running 4.3 BSD-like systems
2018 (such as Mach 3 with the Unix single-server), or System V.
2020 * New function `strncasecmp' to do case-insensitive string comparison
2021 with limited length.
2023 * New function `strsep' is a reentrant alternative to `strtok'.
2025 * New functions `scandir' and `alphasort' for searching directories.
2027 * New function `setenv' is a better interface to `putenv'.
2029 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2030 function for traversing a directory tree.
2032 * The GNU obstack package is now also part of the C library.
2033 The new function `open_obstack_stream' creates a stdio stream that
2034 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2035 formatted output directly to an obstack.
2037 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2038 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2040 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2042 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2043 things to your strings.
2045 * There are some new test programs: test-fseek, testmb, and testrand.
2047 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2048 These ports are not finished, but are a good starting place for really
2049 supporting those systems.
2051 * `/etc/localtime' is now the standard location for the file that says what
2052 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2053 This follows the general principle that `/etc' is the place for all local
2054 configuration files.
2056 * The C library header files now use `extern "C"' when used by the C++
2057 compiler, so the C library should now work with C++ code.
2059 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2060 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2063 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2064 function which uses the `merge sort' algorithm, and is said to be
2065 significantly faster than the old GNU `qsort' function. Merge sort is
2066 now the standard `qsort' function. The new algorithm can require a lot
2067 of temporary storage; so, the old sorting function is called when the
2068 required storage is not available.
2070 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2071 provides the Unix `crypt' function, plus some other entry points.
2073 * The code and header files taken from 4.4 BSD have been updated with the
2074 latest files released from Berkeley.
2076 ----------------------------------------------------------------------
2077 Copyright information:
2079 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2081 Permission is granted to anyone to make or distribute verbatim copies
2082 of this document as received, in any medium, provided that the
2083 copyright notice and this permission notice are preserved,
2084 thus giving the recipient permission to redistribute in turn.
2086 Permission is granted to distribute modified versions
2087 of this document, or of portions of it,
2088 under the above conditions, provided also that they
2089 carry prominent notices stating who last changed them.
2092 version-control: never
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