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, 411, 2541, 2547, 2548, 3335, 3976, 3992, 4026, 4108, 4596, 4822,
13 5077, 5461, 5805, 5993, 6884, 6907, 9739, 9902, 10110, 10135, 10140,
14 10210, 11174, 11322, 11365, 11494, 12047, 13058, 13525, 13526, 13527,
15 13528, 13529, 13530, 13531, 13532, 13533, 13547, 13551, 13552, 13553,
16 13555, 13559, 13583, 13618, 13637, 13695, 13704, 13706, 13738, 13786
20 + define static_assert
24 + declare at_quick_exit and quick_exit also for ISO C11
26 + aligned_alloc. NB: The code is deliberately allows the size parameter
27 to not be a multiple of the alignment. This is a moronic requirement
28 in the standard but it is only a requirement on the caller, not the
33 + uchar.h support added
35 + CMPLX, CMPLXF, CMPLXL added
37 Implemented by Ulrich Drepper.
39 * Support for the IA-64 is removed and could live in ports.
41 * Remove support for anything but ELF binary format
43 * Checking versions of poll, ppoll added.
44 Implemented by Ulrich Drepper.
46 * More generic and 64-bit performance optimizations to math functions.
47 Implemented by Ulrich Drepper.
51 * The following bugs are resolved with this release:
53 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
54 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
55 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
56 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
57 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
58 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
59 13484, 13506, 13515, 13523, 13524, 13538, 13540
61 * New program pldd to list loaded object of a process
62 Implemented by Ulrich Drepper.
64 * Add nss_db support back to glibc. No more dependency on Berkeley db
65 and support for initgroups lookups.
66 Implemented by Ulrich Drepper.
68 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
71 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
74 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
76 Contributed by Liubov Dmitrieva.
78 * Optimized strchr and strrchr for SSE on x86-32.
79 Contributed by Liubov Dmitrieva.
81 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
82 for x86-64 and x86-32.
83 Contributed by Liubov Dmitrieva.
85 * New interfaces: scandirat, scandirat64
86 Implemented by Ulrich Drepper.
88 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
89 Implemented by Ulrich Drepper.
91 * nscd now also caches the netgroup database.
92 Implemented by Ulrich Drepper.
94 * Integrate libm with gcc's -ffinite-math-only option.
95 Implemented by Ulrich Drepper.
97 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
98 to math functions. Implemented by Ulrich Drepper.
100 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
101 Implemented by Ulrich Drepper.
103 * New Linux interfaces: process_vm_readv, process_vm_writev
105 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
106 Implemented by Ulrich Drepper.
108 * Optimized nearbyint and strcasecmp for PPC.
109 Implemented by Adhemerval Zanella.
111 * New locales: bho_IN, unm_US, es_CU, ta_LK
115 * The following bugs are resolved with this release:
117 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
118 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
119 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
120 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
121 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
122 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
123 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
124 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
125 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
126 12795, 12811, 12813, 12814, 12841
128 * The RPC implementation in libc is obsoleted. Old programs keep working
129 but new programs cannot be linked with the routines in libc anymore.
130 Programs in need of RPC functionality must be linked against TI-RPC.
131 The TI-RPC implementation is IPv6 enabled and there are other benefits.
133 Visible changes of this change include (obviously) the inability to link
134 programs using RPC functions without referencing the TI-RPC library and the
135 removal of the RPC headers from the glibc headers.
136 Implemented by Ulrich Drepper.
138 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
139 syncfs, setns, sendmmsg
141 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
142 yue_HK, lij_IT, mhr_RU
144 * New encodings: CP770, CP771, CP772, CP773, CP774
146 * New program sotruss to trace calls through PLTs
147 Implemented by Ulrich Drepper.
149 * The malloc hook implementation is marked deprecated and will be removed
150 from the default implementation in the next version. The design never
151 worked ever since the introduction of threads. Even programs which do
152 not create threads themselves can use multiple threads created internally.
156 * The following bugs are resolved with this release:
158 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
159 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
160 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
161 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
164 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
166 * POWER7 optimizations: memset, memcmp, strncmp
168 * New optimized string functions for x86-64: strnlen (SSE2),
169 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
170 Implemented by Ulrich Drepper.
174 * The following bugs are resolved with this release:
176 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
177 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
178 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
179 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
180 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
181 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
182 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
183 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
185 * New interfaces: pthread_getname_np, pthread_setname_np
187 * New Linux interface: recvmmsg
189 * STT_GNU_IFUNC implemented for Sparc by David Miller.
191 * The dynamic linker now recognizes supported ABI versions from the
192 EI_ABIVERSION field in the ELF header.
193 Implemented by Ulrich Drepper.
195 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
196 will not be used to fill in password fields in the passwd.byname replies.
197 Instead it is used to synthesize the shadow.byname table, should it be
198 missing. This is a useful mode in some installations involving Solaris.
199 Implemented by Ulrich Drepper.
201 * New locales: kok_IN, sq_MK, cv_RU
205 * The following bugs are resolved with this release:
207 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
208 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
209 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
210 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
211 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
212 10789, 10817, 10823, 10840, 10847
214 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
216 Implemented by Ulrich Drepper.
218 * Checking version of longjmp added that fails if an uninitialized stack
219 frame would be created. Implemented by Ulrich Drepper.
221 * STT_GNU_IFUNC is now supported in static executables.
222 Implemented by H.J. Lu.
224 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
226 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
227 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
228 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
229 Contributed by H.J. Lu.
231 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
232 Implemented by Ulrich Drepper.
234 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
236 Contributed by H.J. Lu.
238 * Support for fma instruction in AVX on x86-64.
239 Implemented by H.J. Lu and Ulrich Drepper.
241 * AVX support in x86-64 auditing support in ld.so.
242 Implemented by H.J. Lu.
244 * STB_GNU_UNIQUE support added.
245 Implemented by Ulrich Drepper.
247 * Implement second fallback mode for optimized DNS lookup for even more
248 broken environments. If two requests from the same port are not
249 handled correctly close the socket and open a new one before sending
250 the second request. The 'single-request-reopen' option in /etc/resolv.conf
251 can be used to select this mode right away, instead of rediscovering the
252 necessity is every process again.
253 Implemented by Ulrich Drepper.
255 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
256 Implemented by Adam Tkac.
258 * Optimized iconv conversions for S390x.
259 Implemented by Andreas Krebbel.
261 * Using condvars with PI mutexes is now more efficient due to kernel
262 support for requeueing to PI futexes. NPTL support added for x86-64.
263 Implemented by Ulrich Drepper.
265 * New locales: ps_AF, my_MM
269 * The following bugs are resolved with this release:
271 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
272 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
273 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
274 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
275 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
277 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
278 Implemented by Ulrich Drepper.
280 * New Linux interfaces: accept4, fallocate, fallocate64.
281 Implemented by Ulrich Drepper.
283 * Correct declarations of string function when used in C++ code. This
284 could lead to compile errors for invalid C++ code.
286 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
289 * New POSIX 2008 interface: psiginfo
290 Implemented by Ulrich Drepper.
292 * New ISO C++1x interfaces: quick_exit, at_quick_exit
293 Implemented by Ulrich Drepper.
295 * Support for selecting between multiple function definitions at runtime
296 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
298 * The libcrypt library can now use the hash function implementations in
299 NSS. Implemented by Ulrich Drepper.
301 * The malloc implementation can be compiled to be less memory efficient
302 but higher performing in multi-threaded programs.
303 Implemented by Ulrich Drepper.
305 * New locales: nan_TW@latin, ks_IN
307 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
308 Implemented by Ulrich Drepper.
310 * Extended printf hook support. It is possible to use user-defined types
311 and extend existing format specifiers.
312 Implemented by Ulrich Drepper.
314 * Handling for group shadow files has been added.
315 Implemented by Ulrich Drepper.
317 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
318 servers (the case, e.g., for some people using the built-in DNS
319 server in ADSL modems/routers). There is a once-per-process timeout
320 in case of a broken server. To avoid it, users can run nscd or put
321 'options single-request' in /etc/resolv.conf.
322 Implemented by Ulrich Drepper.
326 * The following bugs are resolved with this release:
328 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
329 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
330 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
331 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
332 6968, 6974, 6980, 6995, 7008, 7009, 7029
334 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
335 up at the same time. Implemented by Ulrich Drepper.
337 * TLS descriptors for LD and GD on x86 and x86-64.
338 Implemented by Alexandre Oliva.
340 * getaddrinfo now handles DCCP and UDPlite.
341 Implemented by Ulrich Drepper.
343 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
344 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
345 Implemented by Ulrich Drepper.
347 * New implementation of memmem, strstr, and strcasestr which is O(n).
348 Implemented by Eric Blake.
350 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
352 * Implement "e" option for popen to open file descriptor with the
353 close-on-exec flag set. Implemented by Ulrich Drepper.
355 * Implement "b" mode for fmemopen. In this mode writes writes don't
356 implicitly add a NUL byte and seeks from the end of the buffer really
357 use the buffer end, not the string length as the basis.
358 Implemented by Ulrich Drepper.
360 * Many functions, exported and internal, now atomically set the close-on-exec
361 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
363 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
365 Implemented by Pravin Satpute.
367 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
371 * The following bugs are resolved with this release:
373 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
374 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
375 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
376 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
377 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
378 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
379 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
381 * New locales: bo_CN, bo_IN, shs_CA.
383 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
385 * Sorting rules for some Indian languages (Devanagari and Gujarati).
386 Implemented by Pravin Satpute.
388 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
390 * nscd caches now all timeouts for DNS entries
391 Implemented by Ulrich Drepper.
393 * nscd is more efficient and wakes up less often.
394 Implemented by Ulrich Drepper.
396 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
397 vdprintf, and obstack_vprintf.
398 Implemented by Jakub Jelinek.
400 * Faster memset for x86-64.
401 Implemented by Harsha Jagasia and H.J. Lu.
403 * Faster memcpy on x86.
404 Implemented by Ulrich Drepper.
406 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
407 Implemented by Ulrich Drepper.
409 * Faster sqrt and sqrtf implemention for some PPC variants.
410 Implemented by Stephen Munroe.
414 * The following bugs are resolved with this release:
416 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
417 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
418 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
419 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
420 5071, 5103, 5104, 5112, 5113, 5184, 5186
422 * More checking functions: fread, fread_unlocked, open*, mq_open.
423 Implemented by Jakub Jelinek and Ulrich Drepper.
425 * Extend fortification to C++. Implemented by Jakub Jelinek.
427 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
428 by not recognizing 'a' as a modifier when those specs are requested.
429 Implemented by Jakub Jelinek.
431 * PPC optimizations to math and string functions.
432 Implemented by Steven Munroe.
434 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
435 options to be passed. Implemented by Ulrich Drepper.
437 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
439 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
440 Implemented by Ulrich Drepper.
442 * Handle private futexes in the NPTL implementation.
443 Implemented by Jakub Jelinek and Ulrich Drepper.
445 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
446 Implemented by Roland McGrath and Ulrich Drepper.
448 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
450 * SHA-256 and SHA-512 based password encryption.
451 Implemented by Ulrich Drepper.
453 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
454 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
457 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
458 Implemented by Ulrich Drepper.
462 * The following bugs are resolved with this release:
464 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
465 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
466 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
467 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
468 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
469 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
470 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
473 * New Linux interfaces: epoll_pwait, sched_getcpu.
475 * New generic interfaces: strerror_l.
477 * nscd can now cache the services database. Implemented by Ulrich Drepper.
481 * The following bugs are resolved with this release:
483 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
484 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
485 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
486 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
487 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
488 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
489 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
490 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
491 3225, 3251, 3252, 3253, 3273
493 * For Linux, the sorting of addresses returned by getaddrinfo now also
494 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
495 Implemented by Ulrich Drepper.
497 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
498 Implemented by Ulrich Drepper.
500 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
502 * New iconv module for MIK. Contributed by Alexander Shopov.
504 * For sites with broken group and/or passwd database, the auto-propagate
505 option of nscd can prevent creating ID lookup entries from the results
506 of a name lookup and vice versa. This usually is no problem but some
507 site might have problems with the default behavior.
508 Implemented by Ulrich Drepper.
510 * Iterating over entire database in NIS can be slow. With the
511 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
512 to trade time for memory. The entire database will be read at once.
513 Implemented by Ulrich Drepper.
515 * The interfaces introduced in RFC 3542 have been implemented by
518 * Support for the new ELF hash table format was added by Ulrich Drepper.
520 * Support for priority inheritance mutexes added by Jakub Jelinek and
523 * Support for priority protected mutexes added by Jakub Jelinek.
525 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
526 or_IN, csb_PL, fy_NL, sr_ME.
530 * More overflow detection functions.
532 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
533 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
535 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
536 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
537 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
538 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
539 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
540 by Masahide Washizawa.
542 * It is now possible to install audit libraries for the dynamic linker using
543 LD_AUDIT. Implemented by Ulrich Drepper.
545 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
546 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
547 For a libc and libpthread that works well on Linux 2.4 kernels, we
548 recommend using the stable 2.3 branch.
550 * The new function open_wmemstream acts like open_memstream,
551 but uses a wchar_t wide character buffer.
553 * The new function ppoll is an improved version of poll, similar to pselect.
555 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
556 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
557 renameat, unlinkat, linkat, symlinkat, readlinkat.
559 * New Linux kernel system calls: unshare,
560 inotify_init, inotify_add_watch, inotify_rm_watch.
562 * The euidaccess function is now also known by the alias eaccess,
563 for compatibility with some other systems.
565 * Timezone data updated to 2006b version.
569 * The following bugs are resolved with this release:
571 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
572 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
573 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
574 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
575 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
576 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
578 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
580 * As of this release, GCC 4 can be used to compile the C Library.
582 * Timezone data updated to 2005m version.
586 * The following bugs are resolved with this release:
588 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
589 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
590 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
591 777, 787, 821, 822, 823, 825
593 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
597 * Support for RFC 3678. Real implementations exist only for Linux so far.
598 Implemented by Ulrich Drepper.
600 * nscd can now cache entries persistently. Expiring entries are reloaded.
601 For speedups the cache can be shared in memory with client processes.
602 Implemented by Ulrich Drepper.
604 * nscd can now perform SELinux checks.
605 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
607 * getaddrinfo queries are now cached. Canonical name lookup is performed
609 Implemented by Ulrich Drepper.
611 * The nothrow function attribute is used when headers are used by gcc when
612 compiling C code. This can avoid significant amounts of exception
615 * The malloc functions perform more error checking and are stricter when
616 it comes to reacting on errors. The default action is to terminate
617 the process after showing an error message. Implemented by Ulrich Drepper.
619 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
620 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
622 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
623 namespaces using the new function dlmopen(). This feature is of course,
624 like most other dynamic loading functionality, not available in statically
625 linked applications. Implemented by Ulrich Drepper.
627 * Low-overhead boundary checking variants of string and some stdio functions
628 were added. These are to be used in conjunction with a gcc patch by
629 Jakub Jelinek which adds calls to these functions if possible.
630 Implemented by Jakub Jelinek and Ulrich Drepper.
632 * Old code for several operating systems and machine architectures that
633 have not been in working condition in a long time have been removed from
634 the main source tree maintained by the GNU C Library's maintainers.
635 These files are now reside in the separate `ports' source module
636 that is usable as an add-on when building the library.
640 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
641 interrogate the dynamic linker, compatible with the Solaris interface.
643 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
644 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
646 * getifaddrs now uses the netlink interface on Linux to get its information.
647 Implemented by Thorsten Kukuk.
649 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
650 Implemented by Ulrich Drepper.
652 * support for non-executable stacks on x86 has been added. Changes mostly
655 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
658 * getaddrinfo now performs destination address selection according to
663 * Thread-safe interfaces for many functions that access locale data
664 were added in version 2.3, but these features were omitted from NEWS.
665 Many functions have variants with an `_l' suffix that take a `locale_t'
666 object as a parameter rather than consulting the current locale.
667 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
668 create and maintain `locale_t' objects. Additionally, the new function
669 `uselocale' sets "the current locale" (as used by functions not so
670 parameterized) set for an individual thread. These features were added
671 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
673 * The functions getresuid, getresgid, setresuid, and setresgid, which
674 have long been available on Linux, are now declared in <unistd.h>
675 and are now also available on the Hurd.
677 * ELF thread-local storage support (TLS) now works on x86-64.
679 * The new dynamic string token $LIB is expanded in shared library names.
680 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
682 * Aldy Hernandez contributed complete software floating point support for
683 PowerPC machines with no FPU.
685 * fexecve is implemented on Linux.
687 * The `btowc' function should work at least twice as fast due to
688 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
690 * With approriate thread add-ons cancelable functions are now implemented
691 in libc.so as well. No need to call the function in libpthread. This
692 change allowed to finally disable the incorrect and expensive handling
693 of weak definition in ld.so.
695 * Yet more PLT entries in libc.so have been removed. We finally arrived
696 at the bare minimum. Startup times improved appropriately.
698 * Support for the new Linux/x86 system call interface was added. The
699 AT_SYSINFO auxiliary vector entry is recognized and handled.
703 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
706 * iconv (the program and the interface) now accepts empty names (excluding
707 options like //TRANSLIT) to mean "use charset of current locale".
709 * localedef can now transliterate characters in strings which are not in
710 the provided charmap. The information from the input locale is used.
712 * Prelinking support was added for ELF targets. This requires additional
713 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
715 * Read-only stdio streams now use mmap to speed up operation by eliminating
716 copying and buffer underflows. To use add 'm' to the mode string of
717 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
719 * The malloc functions were completely rewritten by Wolfram Gloger based
720 on Doug Lea's malloc-2.7.0.c.
722 * Isamu Hasegawa contributed a completely new and POSIX-conformant
723 implementation of regex.
725 * Bruno Haible upgraded the iconv and locale implementation to support
728 * Contents of the LC_* and LANG environment variables in the CEN style are
729 not recognized anymore. It never was used. Change by Ulrich Drepper.
731 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
732 thread-local storage (TLS) ABI on some platforms.
733 Changes by Ulrich Drepper. SH support by Kaz Kojima.
735 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
736 EUC-JISX0213, and TSCII.
738 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
739 BSD-compatible interface for getting all network interface addresses.
740 Implementation for IPv4 by Roland McGrath.
742 * Loading of locale data is faster due to the introduction of a locale
743 archive. Implemented by Roland McGrath and Ulrich Drepper.
745 * Startup times are significantly reduced by not using exported functions
746 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
749 * Steven Munroe contributed a port to PowerPC64/Linux.
753 * The Hurd now uses the GNU libio implementation of stdio rather than the
754 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
756 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
757 with the same behavior as the Linux system call of the same name.
761 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
762 128-bit long double format.
764 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
765 IBM1161, and IBM1162 charsets.
767 * Andreas Jaeger contributed a port to x86-64/Linux.
769 * Peter Bruin contributed a port to PowerPC/Hurd.
771 * libc functions using I/O streams now can handle wide-oriented streams
774 * optimizations in the dynamic linker. Binaries created by recent binutils
775 versions start up quicker due to reduced time spent on relocations.
777 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
781 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
782 asinh, atanh, j0 for the 128-bit long double format.
784 * Bruno Haible updated all the code handling Unicode in some form to
787 * Speed of regex for single-byte locales is back to previous levels.
788 Patch by Isamu Hasegawa.
790 * Alpha, SPARC, and IA-64 now also using floating stacks.
792 * Startup time of internationalized applications greatly improved through
793 iconv cache. Use iconvconfig to generate the cache file.
794 Contributed by Ulrich Drepper.
796 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
797 severe performance problems. Patch by David Mosberger.
799 * The Hurd port got a lot more functionality like AIO, various stdio
800 extensions, etc. Mainly done by Roland McGrath.
802 * mtrace can now lookup symbols in shared libraries.
806 * Intel's IA-64 math library is largely integrated. It provides fast and
807 accurate implementatations for most basic and standard math functions
808 in float, double, and long double format.
810 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
811 and asin for the 96-bit long double format and asin, log, tan for the
812 128-bit long double format.
814 * The beginning of a last-bit accurate math library by IBM Haifa were added.
815 The basic double functions exist today. Contributed by Abraham Ziv
816 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
817 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
819 * An asynchronous name lookup library was added. The interface is designed
820 after POSIX AIO. The proposal was circulated beforehand to get comments.
821 No negative ones came in. Implemented by Ulrich Drepper.
823 * Port to S390/64bit contributed by Martin Schwidefsky
824 <schwidefsky@de.ibm.com>.
826 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
827 of functions for Linux/IA-64.
829 * The RPC code is now thread safe. Threads can now use the same service
830 of different services at the same time. Patch by Eric Norum
831 <eric.norum@usask.ca> with some help by Ulrich Drepper.
833 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
834 family of functions for Linux/S390.
836 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
837 of functions for Linux/x86.
839 * Port to Linux/CRIS contributed by Axis Communications.
843 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
844 we can now check for namespace violations and missing declarations. The
845 result is that almost all headers are now Unix-compliant (as defined in
846 the upcoming XPG6). The negative side is that some programs might need
847 corrections, too, if they depend on the incorrect form of the headers in
848 previous versions which defined too many symbols and included too many
851 * regex now handles multibyte character sets correctly.
852 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
854 * iconv (the program) does now conform to the upcoming XPG6 and handles
855 charmaps. Instead of the charset names the path of charmaps can be
856 provided and the conversion happens based on this data.
857 Contributed by Ulrich Drepper.
859 * The locale program now provides detailed information about the installed
864 only lists the names of the supported locales
868 provides details such as country, language, and codeset name.
869 Contributed by Ulrich Drepper.
873 * The gencat program now parses the input file according to the charset
874 selected by the LC_CTYPE category. This is important for stateful
875 character sets. To make generating catalogs easier there is a way
876 to overwrite the charset selected by the locale: before the first
877 message or $ quote line the catalog can contain a line like
881 to select the charset (ISO-8859-2 in this case).
883 Implemented by Shinya Hanataka and Ulrich Drepper.
885 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
886 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
887 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
889 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
890 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
892 * The LANGUAGE environment variable is now ignored unless the locale is
893 changed from the default "C" locale.
895 * The usual bug fixes.
899 * Greg McGary added runtime support for bounds checking using gcc's
900 new -fbounded-pointers option. ix86 target is complete. PowerPC
903 * Thorsten Kukuk added secure mode support to nscd.
905 * The Berkeley db libraries have been removed.
907 Related, the nss_db module is now in a separate package since it
908 obviously requires a database library being available.
910 * Wide character I/O streams implemented by Ulrich Drepper.
912 * Functions from the extended socket API added by Ulrich Drepper.
914 * Functions feenableexcept and fedisableexcept to control the
915 behaviour of individual exceptions have been added by Andreas Jaeger.
917 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
919 * The resolver code has been updated from bind 8.2.3-T5B which supports
920 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
923 This change could in some situations effect backward compatibility. Since
924 now `_res' is a thread-local instead of a global variable, modifying it
925 in one thread does not have any effect in other threads.
927 The resolver library was also extended to allow IPv6 as the transport
928 protocol for the requests. This work was done by Stig Venaas.
930 * Compatibility code for K&R C compilers has been removed from the
931 header files. A ISO C compiler is needed to use the library
932 (conforming to either C89 or C99 standard).
934 * Complete rewrite of the localedef program to support multibyte character
935 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
936 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
937 Implemented by Ulrich Drepper.
939 Bruno Haible significantly improved the generation and use of the data
940 structures for the wide character tables.
942 * Plural handling in gettext implemented by Ulrich Drepper.
944 * The utmp daemon has been removed.
946 * The port to MIPS-Linux has been finished by Andreas Jaeger.
948 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
951 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
953 * POSIX barriers implemented by Kaz Kylheku.
955 * POSIX spawn function family implemented by Ulrich Drepper.
957 * POSIX spinlocks are now available.
959 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
961 * the configure option --enable-kernel=X.Y.Z allows to strip out
962 compatibility for kernel versions before X.Y.Z. This is currently only
963 implemented for Linux.
965 * the sockaddr_in6 structure changed. The IPv6 working group added a new
966 field sin6_scope_id. This means that all programs using IPv6 should be
967 recompiled. Don't expect binary compatibility with previous glibc
970 * various conversion modules for IBM character sets contributed by
973 * IA-64 port by Jes Sorensen and HJ Lu.
975 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
976 Compiling the GNU C Library for Linux/ia64
977 ******************************************
979 Please refer to the file INSTALL in the same directory as you found
980 this file for general information about configuring and compiling
983 For general inquiries about glibc under Linux/ia64 please use the
984 following mailing list linux-ia64@linuxia64.org or one of the relevant
987 Recommended Tools for Compilation
988 =================================
990 In order for glibc-2.2 to build correctly on the ia64 you need at
991 least the following versions of the GNU tools (the :
993 * The Cygnus toolchain snapshot for the ia64 as of August 4
994 including the provided set of patches. It is however recommend
995 you use the October 24 toolchain snapshot or a more recent version.
997 OR alternatively you can try the following (the Cygnus toolchain is
998 the recommended solution):
1000 * GCC and binutils, GAS and GNU LD out of CVS from
1001 sources.redhat.com as of August 28, 2000 or later. The CVS tree
1002 may require special patches to work properly on the ia64.
1004 Configuring and compiling GNU Libc for Linux/ia64
1005 =================================================
1007 The library requires Linux kernel version 2.4.0-test4-000728 or
1008 later to funtion properly. Besides that it support for debug libraries
1009 is currently untested. Hence the following options
1010 are required for configuring the library:
1012 --disable-debug --enable-kernel=2.4.0
1014 It is also important that you make sure the library picks up the
1015 appropriate kernel header files, if you do not have recent enough
1016 kernel headers in /usr/src/linux/include, you should use the
1017 --with-headers=<path> option to specify the location.
1019 As an example I personally use the following options to configure
1024 --enable-kernel=2.4.0
1026 --enable-add-ons=yes
1028 --with-headers=/home/jes/linux/include
1033 Jes Sorensen <jes@linuxcare.com>,
1035 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1049 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1051 * New xdr functions are added; some rpc functions are now 64bit clean.
1053 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1055 * Fixed known incompatibilities with glibc 2.0.
1057 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1059 * Optimized a number of functions (especially the ELF dynamic loader).
1061 * Update timezone data files.
1063 * lots of charmaps corrections
1065 * some new locale definitions and charmaps
1070 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1071 conform to POSIX member type requirements. Symbol versions have been
1072 adjusted as needed within the library, and for direct use by applications,
1073 but there is potential for problems if third-party libraries use
1074 struct timeval as part of their interface. This does not present
1075 a problem for X and other "essential" system libraries.
1077 * An additional locale model to support C++ Standard Library locale
1078 model and probably more was implemented by Ulrich Drepper.
1080 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1083 * Miles Bader provided the `argp' function family to support hierachical
1084 command line argument parsing, layered on top of getopt.
1086 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1088 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1091 * scanf recognizes the %a and %A format for scanning floating point numbers.
1093 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1094 information and interfaces for the available integer types.
1096 * about 130 new math functions were added to implement the ISO C9x math
1099 * the new header <complex.h> contains definitions of the complex math
1100 functions from ISO C 9X.
1102 * the new header <tgmath.h> defines generic macros to use complex or
1103 real valued functions.
1105 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1107 * Andreas Jaeger provided a test suite for the math library.
1109 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1111 * Ulrich Drepper added character set conversion functions (iconv).
1113 * Optimized string functions have been added.
1115 * The localedata addon is now part of glibc.
1117 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1119 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1120 daemon for NSS (nscd).
1122 Missing a better place here are some numbers on improvements. Under
1123 Linux 2.1.125 un-tar-ing the kernel sources takes
1127 using local files 12.19s 6.88s 22.91s
1129 using NIS 13.92s 8.91s 26.34s
1131 using NIS & nscd 10.37s 7.34s 25.30s
1133 using NIS+ 27.57s 30.37s 640.46s
1135 using NIS+ & nscd 10.25s 7.83s 26.51s
1137 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1139 Keep in mind that non-namelookup related operations dominate above times.
1140 It was just a common complain that using NIS+ unpacking the kernel is
1143 [1] The old nscd implementation is not available anymore since it was
1144 distributed with glibc up to version 2.0.98 and thus is now replaced.
1146 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1148 * Mark Kettenis provided a Hesiod NSS module.
1150 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1151 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1153 * rcmd can now handle netgroups (Dick Streefland).
1155 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1158 * Support for the IPv6 protocol has been added to the socket API, as per the
1159 latest draft standards.
1161 * Support for Linux 2.2 has been added.
1163 * Interface changes relative to the latest 2.0.x release:
1164 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1165 addseverity NEW: Unix98
1166 alphasort64 NEW: LFS
1167 argp_err_exit_status NEW: argp, GNU ext
1168 argp_error NEW: argp, GNU ext
1169 argp_failure NEW: argp, GNU ext
1170 argp_help NEW: argp, GNU ext
1171 argp_parse NEW: argp, GNU ext
1172 argp_program_bug_address NEW: argp, GNU ext
1173 argp_program_version NEW: argp, GNU ext
1174 argp_program_version_hook NEW: argp, GNU ext
1175 argp_state_help NEW: argp, GNU ext
1176 argp_usage NEW: argp, GNU ext
1177 authdes_create NEW: Secure RPC
1178 authdes_getucred NEW: Secure RPC
1179 authdes_pk_create NEW: Secure RPC
1180 backtrace NEW: GNU ext.
1181 backtrace_symbols NEW: GNU ext.
1182 backtrace_symbols_fd NEW: GNU ext.
1184 cacosf NEW: ISO C 9x
1185 cacosh NEW: ISO C 9x
1186 cacoshf NEW: ISO C 9x
1187 cacoshl NEW: ISO C 9x
1188 cacosl NEW: ISO C 9x
1195 casinf NEW: ISO C 9x
1196 casinh NEW: ISO C 9x
1197 casinhf NEW: ISO C 9x
1198 casinhl NEW: ISO C 9x
1199 casinl NEW: ISO C 9x
1201 catanf NEW: ISO C 9x
1202 catanh NEW: ISO C 9x
1203 catanhf NEW: ISO C 9x
1204 catanhl NEW: ISO C 9x
1205 catanl NEW: ISO C 9x
1206 cbc_crypt NEW: Secure RPC
1210 ccoshf NEW: ISO C 9x
1211 ccoshl NEW: ISO C 9x
1217 cimagf NEW: ISO C 9x
1218 cimagl NEW: ISO C 9x
1219 clearerr_locked REMOVED
1220 clntunix_create NEW: sunrpc ext
1222 clog10 NEW: ISO C 9x
1223 clog10f NEW: ISO C 9x
1224 clog10l NEW: ISO C 9x
1234 cprojf NEW: ISO C 9x
1235 cprojl NEW: ISO C 9x
1237 crealf NEW: ISO C 9x
1238 creall NEW: ISO C 9x
1243 csinhf NEW: ISO C 9x
1244 csinhl NEW: ISO C 9x
1247 csqrtf NEW: ISO C 9x
1248 csqrtl NEW: ISO C 9x
1252 ctanhf NEW: ISO C 9x
1253 ctanhl NEW: ISO C 9x
1255 des_setparity NEW: Secure RPC
1256 ecb_crypt NEW: Secure RPC
1257 endutxent NEW: Unix98
1259 exp10f NEW: ISO C 9x
1260 exp10l NEW: ISO C 9x
1264 fattach NEW: STREAMS
1265 fdetach NEW: STREAMS
1269 feclearexcept NEW: ISO C 9x
1270 fegetenv NEW: ISO C 9x
1271 fegetexceptflag NEW: ISO C 9x
1272 fegetround NEW: ISO C 9x
1273 feholdexcept NEW: ISO C 9x
1275 feraiseexcept NEW: ISO C 9x
1276 ferror_locked REMOVED
1277 fesetenv NEW: ISO C 9x
1278 fesetexceptflag NEW: ISO C 9x
1279 fesetround NEW: ISO C 9x
1280 fetestexcept NEW: ISO C 9x
1281 feupdateenv NEW: ISO C 9x
1282 fflush_locked REMOVED
1286 fgets_unlocked NEW: GNU ext.
1287 fileno_locked REMOVED
1299 fputc_locked REMOVED
1300 fputs_unlocked NEW: GNU ext.
1301 fread_unlocked NEW: GNU ext.
1306 fstatvfs NEW: Unix98
1310 ftruncate64 NEW: LFS
1312 fwrite_unlocked NEW: GNU ext.
1313 gai_strerror NEW: IPv6
1317 getchar_locked REMOVED
1319 getdate_err NEW: Unix98
1320 getdate_r NEW: GNU ext.
1322 getnameinfo NEW: IPv6
1323 getnetname NEW: Secure RPC
1324 getpmsg NEW: STREAMS
1325 getpt NEW: Unix98 PTY
1326 getrlimit64 NEW: LFS
1327 getutxent NEW: Unix98
1328 getutxid NEW: Unix98
1329 getutxline NEW: Unix98
1330 glob64 NEW: GNU ext.
1331 globfree64 NEW: GNU ext.
1332 gnu_get_libc_release NEW: GNU ext.
1333 gnu_get_libc_version NEW: GNU ext.
1334 grantpt NEW: Unix98 PTY
1335 host2netname NEW: Secure RPC
1337 iconv_close NEW: iconv
1338 iconv_open NEW: iconv
1339 if_freenameindex NEW: IPv6
1340 if_indextoname NEW: IPv6
1341 if_nameindex NEW: IPv6
1342 if_nametoindex NEW: IPv6
1343 in6addr_any NEW: IPv6
1344 in6addr_loopback NEW: IPv6
1345 inet6_isipv4mapped NEW: IPv6
1346 isastream NEW: STREAMS
1347 iswblank NEW: GNU ext.
1348 key_decryptsession NEW: Secure RPC
1349 key_decryptsession_pk NEW: Secure RPC
1350 key_encryptsession NEW: Secure RPC
1351 key_encryptsession_pk NEW: Secure RPC
1352 key_gendes NEW: Secure RPC
1353 key_get_conv NEW: Secure RPC
1354 key_secretkey_is_set NEW: Secure RPC
1355 key_setnet NEW: Secure RPC
1356 key_setsecret NEW: Secure RPC
1357 llrint NEW: ISO C 9x
1358 llrintf NEW: ISO C 9x
1359 llrintl NEW: ISO C 9x
1360 llround NEW: ISO C 9x
1361 llroundf NEW: ISO C 9x
1362 llroundl NEW: ISO C 9x
1367 lrintf NEW: ISO C 9x
1368 lrintl NEW: ISO C 9x
1369 lround NEW: ISO C 9x
1370 lroundf NEW: ISO C 9x
1371 lroundl NEW: ISO C 9x
1373 makecontext NEW: Unix98
1374 mempcpy NEW: GNU ext.
1377 modify_ldt NEW: kernel
1381 nearbyint NEW: ISO C 9x
1382 nearbyintf NEW: ISO C 9x
1383 nearbyintl NEW: ISO C 9x
1384 netname2host NEW: Secure RPC
1385 netname2user NEW: Secure RPC
1386 nexttoward NEW: ISO C 9x
1387 nexttowardf NEW: ISO C 9x
1388 nexttowardl NEW: ISO C 9x
1392 passwd2des NEW: Secure RPC
1394 pow10f NEW: GNU ext.
1395 pow10l NEW: GNU ext.
1398 printf_size NEW: GNU ext.
1399 printf_size_info NEW: GNU ext.
1400 profil_counter REMOVED
1401 pthread_mutexattr_getkind_np REPLACED
1402 pthread_mutexattr_setkind_np REPLACED
1403 ptsname NEW: Unix98 PTY
1404 ptsname_r NEW: Unix98 PTY
1406 putchar_locked REMOVED
1407 putgrent NEW: GNU ext.
1409 putpmsg NEW: STREAMS
1410 pututxline NEW: Unix98
1414 readdir64_r NEW: LFS
1415 remquo NEW: ISO C 9x
1416 remquof NEW: ISO C 9x
1417 remquol NEW: ISO C 9x
1419 roundf NEW: ISO C 9x
1420 roundl NEW: ISO C 9x
1422 scalbln NEW: ISO C 9x
1423 scalblnf NEW: ISO C 9x
1424 scalblnl NEW: ISO C 9x
1426 sendfile NEW: kernel
1427 setcontext NEW: Unix98
1428 setrlimit64 NEW: LFS
1429 setutxent NEW: Unix98
1431 sigignore NEW: Unix98
1432 sigqueue NEW: POSIX.1b
1433 sigrelse NEW: Unix98
1434 sigset NEW: POSIX.1b
1435 sigtimedwait NEW: POSIX.1b
1436 sigwaitinfo NEW: POSIX.1b
1437 sincos NEW: GNU ext.
1438 sincosf NEW: GNU ext.
1439 sincosl NEW: GNU ext.
1443 strcasestr NEW: GNU ext.
1444 strtoimax NEW: ISO C 9x
1445 strtoumax NEW: ISO C 9x
1446 strverscmp NEW: GNU ext.
1447 svcauthdes_stats NEW: Secure RPC
1448 svcunix_create NEW: sunrpc etx
1449 svcunixfd_create NEW: sunrpc ext
1450 swapcontext NEW: Unix98
1451 tcgetsid NEW: Unix98 PTY
1452 tdestroy NEW: GNU ext.
1453 tgamma NEW: ISO C 9x
1454 tgammaf NEW: ISO C 9x
1455 tgammal NEW: ISO C 9x
1459 truncf NEW: ISO C 9x
1460 truncl NEW: ISO C 9x
1462 unlockpt NEW: Unix98 PTY
1463 updwtmpx NEW: Unix98
1464 user2netname NEW: Secure RPC
1465 utmpxname NEW: Unix98
1466 versionsort NEW: GNU ext.
1467 versionsort64 NEW: GNU ext.
1469 wcscasecmp NEW: GNU ext.
1470 wcsncasecmp NEW: GNU ext.
1471 wcsnlen NEW: GNU ext.
1472 wcstoimax NEW: ISO C 9x
1473 wcstoll NEW: ISO C 9x
1474 wcstoull NEW: ISO C 9x
1475 wcstoumax NEW: ISO C 9x
1477 wordexp NEW: POSIX.2
1478 wordfree NEW: POSIX.2
1479 write_profiling REMOVED
1480 xdecrypt NEW: Secure RPC
1481 xdr_authdes_cred NEW: Secure RPC
1482 xdr_authdes_verf NEW: Secure RPC
1483 xdr_cryptkeyarg NEW: Secure RPC
1484 xdr_cryptkeyarg2 NEW: Secure RPC
1485 xdr_cryptkeyres NEW: Secure RPC
1486 xdr_getcredres NEW: Secure RPC
1487 xdr_key_netstarg NEW: Secure RPC
1488 xdr_key_netstres NEW: Secure RPC
1489 xdr_keybuf NEW: Secure RPC
1490 xdr_keystatus NEW: Secure RPC
1491 xdr_netnamestr NEW: Secure RPC
1492 xdr_sizeof NEW: Secure RPC
1493 xdr_unixcred NEW: sunrpc ext
1494 xencrypt NEW: Secure RPC
1495 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1506 * inet_ntoa is thread-safe
1508 * updwtmp is moved from libutil to libc
1510 * rewrite of cbrt function
1512 * update of timezone data
1526 * add atoll function
1528 * fix complex problems in Berkeley DB code
1530 * fix math functions
1534 * fixed lots of header problems (especially Linux/GNU specific)
1536 * dynamic loader preserves all registers
1538 * Roland McGrath provided support for handling of auxiliary objects in
1539 the ELF dynamic loader.
1541 * support for parallel builds is improved
1545 * GNU extensions are no longer declared by default. To enable them you
1546 must define the macro `_GNU_SOURCE' in your program or compile with
1549 * The library has changed from using GNU ld symbol aliases to using weak
1550 symbols where available. The ELF object file format supports weak
1551 symbols; GNU ld also supports weak symbols in the a.out format. (There
1552 is also now support for other GNU ld extensions in ELF. Use the
1553 `--with-elf' option to configure to indicate you have ELF, and
1554 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1555 of many files which contained only symbol aliases, reducing the size of
1556 the source and the compiled library; many other files were renamed to
1557 less cryptic names previously occupied by the symbol alias files.
1558 There is a new header file <elf.h> for programs which operate on
1559 files in the ELF format.
1561 * Converted to Autoconf version 2, so `configure' has more options.
1562 Run `configure --help' to see the details.
1564 * The library can now be configured to build profiling, highly-optimized
1565 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1566 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1567 `configure' enable building these extra libraries. The shared library is
1568 built by default when using both ELF and GNU ld. When shared libraries
1569 are enabled, the new library `-ldl' is available for arbitrary run-time
1570 loading of shared objects; its interface is defined in <dlfcn.h>. The
1571 new header file <link.h> gives access to the internals of the run-time
1572 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1573 application of same name on other systems and it provides information
1574 about dynamically linked binaries.
1576 * The C library now provides the run-time support code for profiling
1577 executables compiled with `-pg'. Programs can control the profiling code
1578 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1579 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1580 the support for this file format was contributed by David Mosberger-Tang.
1582 * The math code has been replaced with a math library based on fdlibm from
1583 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1584 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1585 functions. The math functions now reside in a separate library, so
1586 programs using them will need to use `-lm' their linking commands.
1588 * John C. Bowman contributed optimized ix87 assembler inline functions.
1590 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1591 mechanism similar to that found in Solaris 2. This is now used for the
1592 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1593 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1594 file controls what services are used for each individual database. This
1595 works by loading shared libraries with names specified in `nsswitch.conf',
1596 so service modules can be changed or added at any time without even
1597 relinking any program. Currently there are the file, db, and NIS based
1598 NSS services available.
1600 * The new functions `strtoq' and `strtouq' parse integer values from
1601 strings, like `strtol' and `strtoul', but they return `long long int' and
1602 `unsigned long long int' values, respectively (64-bit quantities).
1604 * The new functions `strtof' and `strtold' parse floating-point values from
1605 strings, like `strtod', but they return `float' and `long double' values,
1606 respectively (on some machines `double' and `long double' are the same).
1608 * Ulrich Drepper has contributed new implementations of the floating-point
1609 printing and reading code used in the `printf' family of functions and
1610 `strtod', `strtof', and `strtold'. These new functions are perfectly
1611 accurate, and much faster than the old ones.
1613 * The implementation of the POSIX locale model was completely rewritten by
1614 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1615 to compile the POSIX locale definition.
1617 * The former dummy implementations of the strcoll and strxfrm function are
1618 now replaced by fully functional code contributed by Ulrich Drepper. The
1619 collation information comes from the POSIX locale definitions.
1621 * The new header <langinfo.h> defines an interface for accessing
1622 various locale-dependent data (using the locale chosen with `setlocale').
1624 * Ulrich Drepper has contributed a new suite of functions for operation on
1625 wide-character and multibyte-character strings, in <wchar.h>;
1626 and classification and case conversion of wide characters, in <wctype.h>.
1627 These new functions are conforming to the ISO C, Amendement 1 specification.
1629 * There is now a second implementation of the standard I/O library available.
1630 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1631 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1633 * You can now use positional parameter specifications in format strings
1634 for the `printf' and `scanf' families of functions. For example,
1635 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1636 ``Number 6, Mr Jones''. This is mainly useful when providing different
1637 format strings for different languages, whose grammars may dictate
1638 different orderings of the values being printed. To support this
1639 feature, the interface for `register_printf_handler' has changed; see
1640 the header file <printf.h> for details.
1642 * The `printf' and `scanf' families of functions now understand a new
1643 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1644 to group numbers as indicated by the locale; for `scanf' and friends, this
1645 says to accept as valid only a number with all the proper grouping
1646 separators in the right places. In the default "C" locale, numbers are
1647 not grouped; but locales for specific countries will define the usual
1648 conventions (i.e. separate thousands with `,' in the US locale).
1650 * The pgrp functions have been regularized, slightly incompatibly but much
1651 less confusingly. The core functions are now `getpgid' and `setpgid',
1652 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1653 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1654 provided for compatibility. There is no longer an incompatible `getpgrp'
1655 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1657 * The new header file <fts.h> and suite of functions simplify programs that
1658 operate on directory trees. This code comes from 4.4 BSD.
1660 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1661 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1662 NSS scheme used in glibc.
1664 * There is a new malloc debugging hook `__memalign_hook'.
1666 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1667 `unsigned int' in <sys/types.h>. These are for compatibility only and
1668 their use is discouraged.
1670 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1671 done differently, so that it works even without GNU ld.
1673 * New function `euidaccess' checks allowed access to a file like `access',
1674 but using the effective IDs instead of the real IDs.
1676 * The time zone data files have been updated for the latest and greatest
1677 local time conventions of the countries of the world.
1679 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1682 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1683 for formatting floating-point numbers. They are provided only for
1684 compatibility; new programs should use `sprintf' instead. There are
1685 also equivalent function for the `long double' floating-point type and
1686 all functions also exist in a reentrant form.
1688 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1689 functions for maintaining the login-record files (primarily of use to
1690 system programs such as `login'), and convenient functions for
1691 allocating and initializing a pseudo-terminal (pty) device.
1693 * Ulrich Drepper has contributed new support for System V style
1694 shared memory and IPC on systems that support it.
1696 * Ulrich Drepper has contributed several miscellaneous new functions found
1697 in System V: The `hsearch' family of functions provide an effective
1698 implementation of hash tables; `a64l' and `l64a' provide a very simple
1699 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1702 * Ulrich Drepper has contributed new reentrant counterparts for the
1703 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1705 * Ulrich Drepper has contributed new, highly-optimized versions of several
1706 string functions for the i486/Pentium family of processors.
1708 * Ulrich Drepper has updated the Linux-specific code, based largely
1709 on work done in Hongjiu Lu's version of GNU libc for Linux.
1710 The GNU library now supports Linux versions 2.0.10 and later,
1711 using the ELF object file format (i[3456]86-*-linux).
1713 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1715 * David Mosberger-Tang and Richard Henderson have ported the C library
1716 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1717 dynamic linking support for ELF/Alpha.
1719 * Richard Henderson contributed several Alpha optimized assembler function
1720 for arithmetic and string handling.
1722 * Ulrich Drepper has contributed a new set of message catalog functions to
1723 support multiple languages using the <libintl.h> interface, for use with
1724 his new package GNU gettext. Translation volunteers have contributed
1725 catalogs of the library's messages in Spanish, German, and Korean.
1727 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1728 program and the `catgets' function for reading the catalog files it
1729 creates. (The <libintl.h> interface is preferred; we include the
1730 <nl_types.h> interface using `catgets' only for source compatibility with
1731 programs already written to use it.)
1733 * New header file <values.h> gives SVID-compatible names for <limits.h>
1736 * Various new macros, declarations, and small header files for compatibility
1739 * New function `group_member' is a convenient way to check if a process has
1740 a given effective group ID.
1742 * When using GCC 2.7 and later, the socket functions are now declared in a
1743 special way so that passing an argument of type `struct sockaddr_in *',
1744 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1745 `struct sockaddr *' type, does not generate a type-clash warning.
1747 * New function `error' declared in header file <error.h> is a convenient
1748 function for printing error messages and optionally exiting; this is the
1749 canonical function used in GNU programs. The new functions `err', `warn',
1750 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1751 doing the same thing.
1753 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1754 POSIX.2 `glob' function to do ~ and {...} expansion.
1756 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1757 `clearenv' which is used in POSIX.9 is also available.
1759 * New function `getsid' returns session ID number on systems that support it.
1761 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1762 files <db.h> and <mpool.h> provide a rich set of functions for several
1763 types of simple databases stored in memory and in files, and <ndbm.h> is
1764 an old `ndbm'-compatible interface using the `db' functions. Link with
1765 `-ldb' to get these functions.
1767 * New macro `strdupa' copies a string like `strdup', but uses local stack
1768 space from `alloca' instead of dynamic heap space from `malloc'.
1770 * New function `strnlen' is like `strlen' but searches only a given maximum
1771 number of characters for the null terminator. `stpncpy', `strndup' and
1772 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1775 * New function `statfs' in header <sys/statfs.h>.
1777 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1778 provide convenient functions for operating on blocks of null-terminated
1781 * A new suite of functions in <utmp.h> handle all the details of reading
1782 and writing the utmp file.
1784 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1787 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1788 completely POSIX compliant and also implemented the extended functionality
1789 to handle alternate digit representation and alternate era date formats.
1791 * Ulrich Drepper provided an implementation of the `strptime' function
1792 defined in XPG4.2 which transforms a string into a `struct tm' value.
1794 * Paul Eggert provided the tzselect shell script as part of the timezone
1795 code. The shell script makes it easy to select the correct timezone
1798 * The implementation of the malloc family of functions is completely replaced
1799 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1800 The implementation uses the mmap function (if available) and it is
1801 optimized for the use in multi threaded programs.
1803 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1804 functions. This new functionality is usable by specifying a special
1805 salt string and it is compatible with implementation on *BSD systems.
1807 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1808 `getsubopt' to handle second level command line options, `bsd_signal'
1809 to access BSD style `signal' functionality, the obsolete `regexp' style
1812 * the `lchown' function is available on system which support this
1815 * The implementation of the shadow password handling function was contributed
1818 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1820 * POSIX.1g support was added. The <sys/select.h> header is available,
1821 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1822 implementation of `getaddrinfo'.
1826 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1828 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1829 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1831 * The new function `daemon' from 4.4 BSD is useful for server programs that
1832 want to put themselves in the background.
1834 * Joel Sherrill has contributed support for several standalone boards that
1835 run without an operating system.
1837 * `printf', `scanf' and friends now accept a `q' type modifier for long
1838 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1840 * All of the code taken from BSD (notably most of the math and networking
1841 routines) has been updated from the BSD 4.4-Lite release.
1843 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1845 * The new functions `getdomainname' and `setdomainname' fetch or change the
1846 YP/NIS domain name. These are system calls which exist on systems which
1849 * The time zone data files have been updated for the latest international
1852 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1853 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1857 * The C library now includes support for Sun RPC, from Sun's free
1858 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1859 are included. (There is still no support for YP.)
1861 * Tom Quinn has contributed a port of the C library to SGI machines running
1862 Irix 4 (mips-sgi-irix4).
1864 * The new `lockf' function is a simplified interface to the locking
1865 facilities of `fcntl', included for compatibility.
1867 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1869 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1871 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1874 * The error message printed by `assert' for a failed assertion now includes
1875 the name of the program (if using GNU ld) and the name of the calling
1876 function (with versions of GCC that support this).
1878 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1880 * The library now includes the <sys/mman.h> header file and memory
1881 management functions `mmap', `munmap', `mprotect', `msync', and
1882 `madvise', on systems that support those facilities.
1884 * The interface for `mcheck' has changed slightly: the function called to
1885 abort the program when an allocation inconsistency is detected now takes
1886 an argument that indicates the type of failure. The new function
1887 `mprobe' lets you request a consistency check for a particular block at
1888 any time (checks are normally done only when you call `free' or `realloc'
1891 * It is now possible to easily cross-compile the C library, building on one
1892 system a library to run on another machine and/or operating system. All
1893 you need to do is set the variable `HOST_CC' in `configparms' to the
1894 native compiler for programs to run on the machine you are building on (a
1895 few generator programs are used on Unix systems); set `CC' to the
1898 * The new function `fexecve' (only implemented on the GNU system) executes
1899 a program file given a file descriptor already open on the file.
1903 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1904 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1906 * You can set the variable `libprefix' in `configparms' to specify a prefix
1907 to be prepended to installed library files; this makes it easy to install
1908 the GNU C library to be linked as `-lgnuc' or whatever.
1910 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1911 copies a limited number of characters from a string, and returns the
1912 address of the last character written.
1914 * You no longer need to check for whether the installed `stddef.h' is
1915 compatible with the GNU C library. configure now checks for you.
1917 * You can now define a per-stream `fileno' function to convert the
1918 stream's cookie into an integral file descriptor.
1920 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1921 allocates zero bytes of storage, and returns a unique pointer which
1922 you can pass to `realloc' or `free'. The behavior is undefined if
1923 you dereference this pointer.
1925 * The C library now runs on Sony NEWS m68k machines running either
1926 NewsOS 3 or NewsOS 4.
1928 * The new `syscall' function is a system-dependent primitive function
1929 for invoking system calls. It has the canonical behavior on Unix
1930 systems, including unreliable return values for some calls (such as
1931 `pipe', `fork' and `getppid').
1933 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1934 to `EAGAIN', which is the preferred name. On systems whose kernels
1935 use two distinct codes, the C library now translates EWOULDBLOCK to
1936 EAGAIN in every system call function.
1940 * The GNU C Library Reference Manual is now distributed with the library.
1941 `make dvi' will produce a DVI file of the printed manual.
1942 `make info' will produce Info files that you can read on line using C-h i
1943 in Emacs or the `info' program.
1944 Please send comments on the manual to bug-glibc-manual@gnu.org.
1946 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1948 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1950 * Jason Merrill has contributed a port to the Sequent Symmetry running
1951 Dynix version 3 (i386-sequent-dynix).
1953 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1954 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1956 * New function `memory_warnings' lets you arrange to get warnings when
1957 malloc is running out of memory to allocate, like Emacs gives you.
1959 * The C library now contains the relocating allocator used in Emacs 19 for
1960 its editing buffers. This allocator (ralloc) minimizes allocation
1961 overhead and fragmentation by moving allocated regions around whenever it
1962 needs to. You always refer to a ralloc'd region with a "handle" (a
1963 pointer to a pointer--an object of type `void **').
1965 * There is a new `printf' format: `%m' gives you the string corresponding
1966 to the error code in `errno'.
1968 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1969 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1970 pass, the `a' modifier says to fill in a `char **' you pass with a
1973 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1974 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1975 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1977 * `mkstemp' is a traditional Unix function to atomically create and open a
1978 uniquely-named temporary file.
1982 * The standard location for the file that says what the local timezone is
1983 has changed again. It is now `/usr/local/etc/localtime' (or more
1984 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1986 * The distribution no longer contains any files with names longer than 14
1989 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1990 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1992 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1996 * The configuration process has changed quite a bit. The `configure'
1997 script is now used just like the configuration scripts for other GNU
1998 packages. The `sysdeps' directory hierarchy is much rearranged.
1999 The file `INSTALL' explains the new scheme in detail.
2001 * The header files no longer need to be processed into ANSI C and
2002 traditional C versions. There is just one set of files to install, and
2003 it will work with ANSI or old C compilers (including `gcc -traditional').
2005 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2006 MIPS DECStation running Ultrix 4.
2008 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2009 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2010 made itself into a shared library.
2012 * Yet further improved support for the i386, running 4.3 BSD-like systems
2013 (such as Mach 3 with the Unix single-server), or System V.
2015 * New function `strncasecmp' to do case-insensitive string comparison
2016 with limited length.
2018 * New function `strsep' is a reentrant alternative to `strtok'.
2020 * New functions `scandir' and `alphasort' for searching directories.
2022 * New function `setenv' is a better interface to `putenv'.
2024 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2025 function for traversing a directory tree.
2027 * The GNU obstack package is now also part of the C library.
2028 The new function `open_obstack_stream' creates a stdio stream that
2029 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2030 formatted output directly to an obstack.
2032 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2033 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2035 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2037 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2038 things to your strings.
2040 * There are some new test programs: test-fseek, testmb, and testrand.
2042 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2043 These ports are not finished, but are a good starting place for really
2044 supporting those systems.
2046 * `/etc/localtime' is now the standard location for the file that says what
2047 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2048 This follows the general principle that `/etc' is the place for all local
2049 configuration files.
2051 * The C library header files now use `extern "C"' when used by the C++
2052 compiler, so the C library should now work with C++ code.
2054 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2055 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2058 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2059 function which uses the `merge sort' algorithm, and is said to be
2060 significantly faster than the old GNU `qsort' function. Merge sort is
2061 now the standard `qsort' function. The new algorithm can require a lot
2062 of temporary storage; so, the old sorting function is called when the
2063 required storage is not available.
2065 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2066 provides the Unix `crypt' function, plus some other entry points.
2068 * The code and header files taken from 4.4 BSD have been updated with the
2069 latest files released from Berkeley.
2071 ----------------------------------------------------------------------
2072 Copyright information:
2074 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2076 Permission is granted to anyone to make or distribute verbatim copies
2077 of this document as received, in any medium, provided that the
2078 copyright notice and this permission notice are preserved,
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2081 Permission is granted to distribute modified versions
2082 of this document, or of portions of it,
2083 under the above conditions, provided also that they
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2087 version-control: never
projects / platform / upstream / glibc.git / blob