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, 6486, 6730, 6770, 6884, 6907, 6911,
15 9739, 9902, 10110, 10135, 10140, 10210, 10346, 10545, 10716, 11174, 11322,
16 11365, 11451, 11494, 12047, 12340, 13058, 13525, 13526, 13527, 13528,
17 13529, 13530, 13531, 13532, 13533, 13547, 13551, 13552, 13553, 13555,
18 13559, 13566, 13583, 13592, 13618, 13637, 13656, 13658, 13673, 13691,
19 13695, 13704, 13706, 13726, 13738, 13760, 13761, 13786, 13792, 13806,
20 13824, 13840, 13841, 13844, 13846, 13851, 13852, 13854, 13871, 13879,
21 13883, 13892, 13908, 13910, 13911, 13912, 13913, 13915, 13916, 13917,
22 13918, 13919, 13920, 13921, 13926, 13928, 13938
26 + define static_assert
30 + declare at_quick_exit and quick_exit also for ISO C11
32 + aligned_alloc. NB: The code is deliberately allows the size parameter
33 to not be a multiple of the alignment. This is a moronic requirement
34 in the standard but it is only a requirement on the caller, not the
39 + uchar.h support added
41 + CMPLX, CMPLXF, CMPLXL added
43 Implemented by Ulrich Drepper.
45 * Support for the IA-64 is removed and could live in ports.
47 * Remove support for anything but ELF binary format
49 * Checking versions of poll, ppoll added.
50 Implemented by Ulrich Drepper.
52 * More generic and 64-bit performance optimizations to math functions.
53 Implemented by Ulrich Drepper.
57 * The following bugs are resolved with this release:
59 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
60 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
61 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
62 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
63 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
64 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
65 13484, 13506, 13515, 13523, 13524, 13538, 13540
67 * New program pldd to list loaded object of a process
68 Implemented by Ulrich Drepper.
70 * Add nss_db support back to glibc. No more dependency on Berkeley db
71 and support for initgroups lookups.
72 Implemented by Ulrich Drepper.
74 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
77 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
80 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
82 Contributed by Liubov Dmitrieva.
84 * Optimized strchr and strrchr for SSE on x86-32.
85 Contributed by Liubov Dmitrieva.
87 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
88 for x86-64 and x86-32.
89 Contributed by Liubov Dmitrieva.
91 * New interfaces: scandirat, scandirat64
92 Implemented by Ulrich Drepper.
94 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
95 Implemented by Ulrich Drepper.
97 * nscd now also caches the netgroup database.
98 Implemented by Ulrich Drepper.
100 * Integrate libm with gcc's -ffinite-math-only option.
101 Implemented by Ulrich Drepper.
103 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
104 to math functions. Implemented by Ulrich Drepper.
106 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
107 Implemented by Ulrich Drepper.
109 * New Linux interfaces: process_vm_readv, process_vm_writev
111 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
112 Implemented by Ulrich Drepper.
114 * Optimized nearbyint and strcasecmp for PPC.
115 Implemented by Adhemerval Zanella.
117 * New locales: bho_IN, unm_US, es_CU, ta_LK
121 * The following bugs are resolved with this release:
123 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
124 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
125 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
126 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
127 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
128 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
129 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
130 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
131 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
132 12795, 12811, 12813, 12814, 12841
134 * The RPC implementation in libc is obsoleted. Old programs keep working
135 but new programs cannot be linked with the routines in libc anymore.
136 Programs in need of RPC functionality must be linked against TI-RPC.
137 The TI-RPC implementation is IPv6 enabled and there are other benefits.
139 Visible changes of this change include (obviously) the inability to link
140 programs using RPC functions without referencing the TI-RPC library and the
141 removal of the RPC headers from the glibc headers.
142 Implemented by Ulrich Drepper.
144 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
145 syncfs, setns, sendmmsg
147 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
148 yue_HK, lij_IT, mhr_RU
150 * New encodings: CP770, CP771, CP772, CP773, CP774
152 * New program sotruss to trace calls through PLTs
153 Implemented by Ulrich Drepper.
155 * The malloc hook implementation is marked deprecated and will be removed
156 from the default implementation in the next version. The design never
157 worked ever since the introduction of threads. Even programs which do
158 not create threads themselves can use multiple threads created internally.
162 * The following bugs are resolved with this release:
164 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
165 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
166 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
167 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
170 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
172 * POWER7 optimizations: memset, memcmp, strncmp
174 * New optimized string functions for x86-64: strnlen (SSE2),
175 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
176 Implemented by Ulrich Drepper.
180 * The following bugs are resolved with this release:
182 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
183 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
184 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
185 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
186 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
187 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
188 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
189 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
191 * New interfaces: pthread_getname_np, pthread_setname_np
193 * New Linux interface: recvmmsg
195 * STT_GNU_IFUNC implemented for Sparc by David Miller.
197 * The dynamic linker now recognizes supported ABI versions from the
198 EI_ABIVERSION field in the ELF header.
199 Implemented by Ulrich Drepper.
201 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
202 will not be used to fill in password fields in the passwd.byname replies.
203 Instead it is used to synthesize the shadow.byname table, should it be
204 missing. This is a useful mode in some installations involving Solaris.
205 Implemented by Ulrich Drepper.
207 * New locales: kok_IN, sq_MK, cv_RU
211 * The following bugs are resolved with this release:
213 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
214 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
215 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
216 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
217 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
218 10789, 10817, 10823, 10840, 10847
220 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
222 Implemented by Ulrich Drepper.
224 * Checking version of longjmp added that fails if an uninitialized stack
225 frame would be created. Implemented by Ulrich Drepper.
227 * STT_GNU_IFUNC is now supported in static executables.
228 Implemented by H.J. Lu.
230 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
232 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
233 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
234 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
235 Contributed by H.J. Lu.
237 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
238 Implemented by Ulrich Drepper.
240 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
242 Contributed by H.J. Lu.
244 * Support for fma instruction in AVX on x86-64.
245 Implemented by H.J. Lu and Ulrich Drepper.
247 * AVX support in x86-64 auditing support in ld.so.
248 Implemented by H.J. Lu.
250 * STB_GNU_UNIQUE support added.
251 Implemented by Ulrich Drepper.
253 * Implement second fallback mode for optimized DNS lookup for even more
254 broken environments. If two requests from the same port are not
255 handled correctly close the socket and open a new one before sending
256 the second request. The 'single-request-reopen' option in /etc/resolv.conf
257 can be used to select this mode right away, instead of rediscovering the
258 necessity is every process again.
259 Implemented by Ulrich Drepper.
261 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
262 Implemented by Adam Tkac.
264 * Optimized iconv conversions for S390x.
265 Implemented by Andreas Krebbel.
267 * Using condvars with PI mutexes is now more efficient due to kernel
268 support for requeueing to PI futexes. NPTL support added for x86-64.
269 Implemented by Ulrich Drepper.
271 * New locales: ps_AF, my_MM
275 * The following bugs are resolved with this release:
277 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
278 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
279 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
280 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
281 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
283 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
284 Implemented by Ulrich Drepper.
286 * New Linux interfaces: accept4, fallocate, fallocate64.
287 Implemented by Ulrich Drepper.
289 * Correct declarations of string function when used in C++ code. This
290 could lead to compile errors for invalid C++ code.
292 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
295 * New POSIX 2008 interface: psiginfo
296 Implemented by Ulrich Drepper.
298 * New ISO C++1x interfaces: quick_exit, at_quick_exit
299 Implemented by Ulrich Drepper.
301 * Support for selecting between multiple function definitions at runtime
302 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
304 * The libcrypt library can now use the hash function implementations in
305 NSS. Implemented by Ulrich Drepper.
307 * The malloc implementation can be compiled to be less memory efficient
308 but higher performing in multi-threaded programs.
309 Implemented by Ulrich Drepper.
311 * New locales: nan_TW@latin, ks_IN
313 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
314 Implemented by Ulrich Drepper.
316 * Extended printf hook support. It is possible to use user-defined types
317 and extend existing format specifiers.
318 Implemented by Ulrich Drepper.
320 * Handling for group shadow files has been added.
321 Implemented by Ulrich Drepper.
323 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
324 servers (the case, e.g., for some people using the built-in DNS
325 server in ADSL modems/routers). There is a once-per-process timeout
326 in case of a broken server. To avoid it, users can run nscd or put
327 'options single-request' in /etc/resolv.conf.
328 Implemented by Ulrich Drepper.
332 * The following bugs are resolved with this release:
334 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
335 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
336 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
337 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
338 6968, 6974, 6980, 6995, 7008, 7009, 7029
340 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
341 up at the same time. Implemented by Ulrich Drepper.
343 * TLS descriptors for LD and GD on x86 and x86-64.
344 Implemented by Alexandre Oliva.
346 * getaddrinfo now handles DCCP and UDPlite.
347 Implemented by Ulrich Drepper.
349 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
350 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
351 Implemented by Ulrich Drepper.
353 * New implementation of memmem, strstr, and strcasestr which is O(n).
354 Implemented by Eric Blake.
356 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
358 * Implement "e" option for popen to open file descriptor with the
359 close-on-exec flag set. Implemented by Ulrich Drepper.
361 * Implement "b" mode for fmemopen. In this mode writes writes don't
362 implicitly add a NUL byte and seeks from the end of the buffer really
363 use the buffer end, not the string length as the basis.
364 Implemented by Ulrich Drepper.
366 * Many functions, exported and internal, now atomically set the close-on-exec
367 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
369 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
371 Implemented by Pravin Satpute.
373 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
377 * The following bugs are resolved with this release:
379 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
380 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
381 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
382 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
383 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
384 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
385 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
387 * New locales: bo_CN, bo_IN, shs_CA.
389 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
391 * Sorting rules for some Indian languages (Devanagari and Gujarati).
392 Implemented by Pravin Satpute.
394 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
396 * nscd caches now all timeouts for DNS entries
397 Implemented by Ulrich Drepper.
399 * nscd is more efficient and wakes up less often.
400 Implemented by Ulrich Drepper.
402 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
403 vdprintf, and obstack_vprintf.
404 Implemented by Jakub Jelinek.
406 * Faster memset for x86-64.
407 Implemented by Harsha Jagasia and H.J. Lu.
409 * Faster memcpy on x86.
410 Implemented by Ulrich Drepper.
412 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
413 Implemented by Ulrich Drepper.
415 * Faster sqrt and sqrtf implemention for some PPC variants.
416 Implemented by Stephen Munroe.
420 * The following bugs are resolved with this release:
422 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
423 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
424 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
425 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
426 5071, 5103, 5104, 5112, 5113, 5184, 5186
428 * More checking functions: fread, fread_unlocked, open*, mq_open.
429 Implemented by Jakub Jelinek and Ulrich Drepper.
431 * Extend fortification to C++. Implemented by Jakub Jelinek.
433 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
434 by not recognizing 'a' as a modifier when those specs are requested.
435 Implemented by Jakub Jelinek.
437 * PPC optimizations to math and string functions.
438 Implemented by Steven Munroe.
440 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
441 options to be passed. Implemented by Ulrich Drepper.
443 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
445 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
446 Implemented by Ulrich Drepper.
448 * Handle private futexes in the NPTL implementation.
449 Implemented by Jakub Jelinek and Ulrich Drepper.
451 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
452 Implemented by Roland McGrath and Ulrich Drepper.
454 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
456 * SHA-256 and SHA-512 based password encryption.
457 Implemented by Ulrich Drepper.
459 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
460 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
463 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
464 Implemented by Ulrich Drepper.
468 * The following bugs are resolved with this release:
470 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
471 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
472 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
473 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
474 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
475 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
476 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
479 * New Linux interfaces: epoll_pwait, sched_getcpu.
481 * New generic interfaces: strerror_l.
483 * nscd can now cache the services database. Implemented by Ulrich Drepper.
487 * The following bugs are resolved with this release:
489 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
490 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
491 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
492 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
493 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
494 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
495 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
496 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
497 3225, 3251, 3252, 3253, 3273
499 * For Linux, the sorting of addresses returned by getaddrinfo now also
500 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
501 Implemented by Ulrich Drepper.
503 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
504 Implemented by Ulrich Drepper.
506 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
508 * New iconv module for MIK. Contributed by Alexander Shopov.
510 * For sites with broken group and/or passwd database, the auto-propagate
511 option of nscd can prevent creating ID lookup entries from the results
512 of a name lookup and vice versa. This usually is no problem but some
513 site might have problems with the default behavior.
514 Implemented by Ulrich Drepper.
516 * Iterating over entire database in NIS can be slow. With the
517 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
518 to trade time for memory. The entire database will be read at once.
519 Implemented by Ulrich Drepper.
521 * The interfaces introduced in RFC 3542 have been implemented by
524 * Support for the new ELF hash table format was added by Ulrich Drepper.
526 * Support for priority inheritance mutexes added by Jakub Jelinek and
529 * Support for priority protected mutexes added by Jakub Jelinek.
531 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
532 or_IN, csb_PL, fy_NL, sr_ME.
536 * More overflow detection functions.
538 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
539 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
541 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
542 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
543 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
544 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
545 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
546 by Masahide Washizawa.
548 * It is now possible to install audit libraries for the dynamic linker using
549 LD_AUDIT. Implemented by Ulrich Drepper.
551 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
552 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
553 For a libc and libpthread that works well on Linux 2.4 kernels, we
554 recommend using the stable 2.3 branch.
556 * The new function open_wmemstream acts like open_memstream,
557 but uses a wchar_t wide character buffer.
559 * The new function ppoll is an improved version of poll, similar to pselect.
561 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
562 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
563 renameat, unlinkat, linkat, symlinkat, readlinkat.
565 * New Linux kernel system calls: unshare,
566 inotify_init, inotify_add_watch, inotify_rm_watch.
568 * The euidaccess function is now also known by the alias eaccess,
569 for compatibility with some other systems.
571 * Timezone data updated to 2006b version.
575 * The following bugs are resolved with this release:
577 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
578 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
579 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
580 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
581 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
582 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
584 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
586 * As of this release, GCC 4 can be used to compile the C Library.
588 * Timezone data updated to 2005m version.
592 * The following bugs are resolved with this release:
594 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
595 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
596 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
597 777, 787, 821, 822, 823, 825
599 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
603 * Support for RFC 3678. Real implementations exist only for Linux so far.
604 Implemented by Ulrich Drepper.
606 * nscd can now cache entries persistently. Expiring entries are reloaded.
607 For speedups the cache can be shared in memory with client processes.
608 Implemented by Ulrich Drepper.
610 * nscd can now perform SELinux checks.
611 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
613 * getaddrinfo queries are now cached. Canonical name lookup is performed
615 Implemented by Ulrich Drepper.
617 * The nothrow function attribute is used when headers are used by gcc when
618 compiling C code. This can avoid significant amounts of exception
621 * The malloc functions perform more error checking and are stricter when
622 it comes to reacting on errors. The default action is to terminate
623 the process after showing an error message. Implemented by Ulrich Drepper.
625 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
626 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
628 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
629 namespaces using the new function dlmopen(). This feature is of course,
630 like most other dynamic loading functionality, not available in statically
631 linked applications. Implemented by Ulrich Drepper.
633 * Low-overhead boundary checking variants of string and some stdio functions
634 were added. These are to be used in conjunction with a gcc patch by
635 Jakub Jelinek which adds calls to these functions if possible.
636 Implemented by Jakub Jelinek and Ulrich Drepper.
638 * Old code for several operating systems and machine architectures that
639 have not been in working condition in a long time have been removed from
640 the main source tree maintained by the GNU C Library's maintainers.
641 These files are now reside in the separate `ports' source module
642 that is usable as an add-on when building the library.
646 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
647 interrogate the dynamic linker, compatible with the Solaris interface.
649 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
650 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
652 * getifaddrs now uses the netlink interface on Linux to get its information.
653 Implemented by Thorsten Kukuk.
655 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
656 Implemented by Ulrich Drepper.
658 * support for non-executable stacks on x86 has been added. Changes mostly
661 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
664 * getaddrinfo now performs destination address selection according to
669 * Thread-safe interfaces for many functions that access locale data
670 were added in version 2.3, but these features were omitted from NEWS.
671 Many functions have variants with an `_l' suffix that take a `locale_t'
672 object as a parameter rather than consulting the current locale.
673 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
674 create and maintain `locale_t' objects. Additionally, the new function
675 `uselocale' sets "the current locale" (as used by functions not so
676 parameterized) set for an individual thread. These features were added
677 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
679 * The functions getresuid, getresgid, setresuid, and setresgid, which
680 have long been available on Linux, are now declared in <unistd.h>
681 and are now also available on the Hurd.
683 * ELF thread-local storage support (TLS) now works on x86-64.
685 * The new dynamic string token $LIB is expanded in shared library names.
686 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
688 * Aldy Hernandez contributed complete software floating point support for
689 PowerPC machines with no FPU.
691 * fexecve is implemented on Linux.
693 * The `btowc' function should work at least twice as fast due to
694 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
696 * With approriate thread add-ons cancelable functions are now implemented
697 in libc.so as well. No need to call the function in libpthread. This
698 change allowed to finally disable the incorrect and expensive handling
699 of weak definition in ld.so.
701 * Yet more PLT entries in libc.so have been removed. We finally arrived
702 at the bare minimum. Startup times improved appropriately.
704 * Support for the new Linux/x86 system call interface was added. The
705 AT_SYSINFO auxiliary vector entry is recognized and handled.
709 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
712 * iconv (the program and the interface) now accepts empty names (excluding
713 options like //TRANSLIT) to mean "use charset of current locale".
715 * localedef can now transliterate characters in strings which are not in
716 the provided charmap. The information from the input locale is used.
718 * Prelinking support was added for ELF targets. This requires additional
719 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
721 * Read-only stdio streams now use mmap to speed up operation by eliminating
722 copying and buffer underflows. To use add 'm' to the mode string of
723 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
725 * The malloc functions were completely rewritten by Wolfram Gloger based
726 on Doug Lea's malloc-2.7.0.c.
728 * Isamu Hasegawa contributed a completely new and POSIX-conformant
729 implementation of regex.
731 * Bruno Haible upgraded the iconv and locale implementation to support
734 * Contents of the LC_* and LANG environment variables in the CEN style are
735 not recognized anymore. It never was used. Change by Ulrich Drepper.
737 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
738 thread-local storage (TLS) ABI on some platforms.
739 Changes by Ulrich Drepper. SH support by Kaz Kojima.
741 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
742 EUC-JISX0213, and TSCII.
744 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
745 BSD-compatible interface for getting all network interface addresses.
746 Implementation for IPv4 by Roland McGrath.
748 * Loading of locale data is faster due to the introduction of a locale
749 archive. Implemented by Roland McGrath and Ulrich Drepper.
751 * Startup times are significantly reduced by not using exported functions
752 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
755 * Steven Munroe contributed a port to PowerPC64/Linux.
759 * The Hurd now uses the GNU libio implementation of stdio rather than the
760 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
762 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
763 with the same behavior as the Linux system call of the same name.
767 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
768 128-bit long double format.
770 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
771 IBM1161, and IBM1162 charsets.
773 * Andreas Jaeger contributed a port to x86-64/Linux.
775 * Peter Bruin contributed a port to PowerPC/Hurd.
777 * libc functions using I/O streams now can handle wide-oriented streams
780 * optimizations in the dynamic linker. Binaries created by recent binutils
781 versions start up quicker due to reduced time spent on relocations.
783 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
787 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
788 asinh, atanh, j0 for the 128-bit long double format.
790 * Bruno Haible updated all the code handling Unicode in some form to
793 * Speed of regex for single-byte locales is back to previous levels.
794 Patch by Isamu Hasegawa.
796 * Alpha, SPARC, and IA-64 now also using floating stacks.
798 * Startup time of internationalized applications greatly improved through
799 iconv cache. Use iconvconfig to generate the cache file.
800 Contributed by Ulrich Drepper.
802 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
803 severe performance problems. Patch by David Mosberger.
805 * The Hurd port got a lot more functionality like AIO, various stdio
806 extensions, etc. Mainly done by Roland McGrath.
808 * mtrace can now lookup symbols in shared libraries.
812 * Intel's IA-64 math library is largely integrated. It provides fast and
813 accurate implementatations for most basic and standard math functions
814 in float, double, and long double format.
816 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
817 and asin for the 96-bit long double format and asin, log, tan for the
818 128-bit long double format.
820 * The beginning of a last-bit accurate math library by IBM Haifa were added.
821 The basic double functions exist today. Contributed by Abraham Ziv
822 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
823 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
825 * An asynchronous name lookup library was added. The interface is designed
826 after POSIX AIO. The proposal was circulated beforehand to get comments.
827 No negative ones came in. Implemented by Ulrich Drepper.
829 * Port to S390/64bit contributed by Martin Schwidefsky
830 <schwidefsky@de.ibm.com>.
832 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
833 of functions for Linux/IA-64.
835 * The RPC code is now thread safe. Threads can now use the same service
836 of different services at the same time. Patch by Eric Norum
837 <eric.norum@usask.ca> with some help by Ulrich Drepper.
839 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
840 family of functions for Linux/S390.
842 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
843 of functions for Linux/x86.
845 * Port to Linux/CRIS contributed by Axis Communications.
849 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
850 we can now check for namespace violations and missing declarations. The
851 result is that almost all headers are now Unix-compliant (as defined in
852 the upcoming XPG6). The negative side is that some programs might need
853 corrections, too, if they depend on the incorrect form of the headers in
854 previous versions which defined too many symbols and included too many
857 * regex now handles multibyte character sets correctly.
858 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
860 * iconv (the program) does now conform to the upcoming XPG6 and handles
861 charmaps. Instead of the charset names the path of charmaps can be
862 provided and the conversion happens based on this data.
863 Contributed by Ulrich Drepper.
865 * The locale program now provides detailed information about the installed
870 only lists the names of the supported locales
874 provides details such as country, language, and codeset name.
875 Contributed by Ulrich Drepper.
879 * The gencat program now parses the input file according to the charset
880 selected by the LC_CTYPE category. This is important for stateful
881 character sets. To make generating catalogs easier there is a way
882 to overwrite the charset selected by the locale: before the first
883 message or $ quote line the catalog can contain a line like
887 to select the charset (ISO-8859-2 in this case).
889 Implemented by Shinya Hanataka and Ulrich Drepper.
891 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
892 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
893 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
895 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
896 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
898 * The LANGUAGE environment variable is now ignored unless the locale is
899 changed from the default "C" locale.
901 * The usual bug fixes.
905 * Greg McGary added runtime support for bounds checking using gcc's
906 new -fbounded-pointers option. ix86 target is complete. PowerPC
909 * Thorsten Kukuk added secure mode support to nscd.
911 * The Berkeley db libraries have been removed.
913 Related, the nss_db module is now in a separate package since it
914 obviously requires a database library being available.
916 * Wide character I/O streams implemented by Ulrich Drepper.
918 * Functions from the extended socket API added by Ulrich Drepper.
920 * Functions feenableexcept and fedisableexcept to control the
921 behaviour of individual exceptions have been added by Andreas Jaeger.
923 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
925 * The resolver code has been updated from bind 8.2.3-T5B which supports
926 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
929 This change could in some situations effect backward compatibility. Since
930 now `_res' is a thread-local instead of a global variable, modifying it
931 in one thread does not have any effect in other threads.
933 The resolver library was also extended to allow IPv6 as the transport
934 protocol for the requests. This work was done by Stig Venaas.
936 * Compatibility code for K&R C compilers has been removed from the
937 header files. A ISO C compiler is needed to use the library
938 (conforming to either C89 or C99 standard).
940 * Complete rewrite of the localedef program to support multibyte character
941 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
942 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
943 Implemented by Ulrich Drepper.
945 Bruno Haible significantly improved the generation and use of the data
946 structures for the wide character tables.
948 * Plural handling in gettext implemented by Ulrich Drepper.
950 * The utmp daemon has been removed.
952 * The port to MIPS-Linux has been finished by Andreas Jaeger.
954 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
957 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
959 * POSIX barriers implemented by Kaz Kylheku.
961 * POSIX spawn function family implemented by Ulrich Drepper.
963 * POSIX spinlocks are now available.
965 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
967 * the configure option --enable-kernel=X.Y.Z allows to strip out
968 compatibility for kernel versions before X.Y.Z. This is currently only
969 implemented for Linux.
971 * the sockaddr_in6 structure changed. The IPv6 working group added a new
972 field sin6_scope_id. This means that all programs using IPv6 should be
973 recompiled. Don't expect binary compatibility with previous glibc
976 * various conversion modules for IBM character sets contributed by
979 * IA-64 port by Jes Sorensen and HJ Lu.
981 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
982 Compiling the GNU C Library for Linux/ia64
983 ******************************************
985 Please refer to the file INSTALL in the same directory as you found
986 this file for general information about configuring and compiling
989 For general inquiries about glibc under Linux/ia64 please use the
990 following mailing list linux-ia64@linuxia64.org or one of the relevant
993 Recommended Tools for Compilation
994 =================================
996 In order for glibc-2.2 to build correctly on the ia64 you need at
997 least the following versions of the GNU tools (the :
999 * The Cygnus toolchain snapshot for the ia64 as of August 4
1000 including the provided set of patches. It is however recommend
1001 you use the October 24 toolchain snapshot or a more recent version.
1003 OR alternatively you can try the following (the Cygnus toolchain is
1004 the recommended solution):
1006 * GCC and binutils, GAS and GNU LD out of CVS from
1007 sources.redhat.com as of August 28, 2000 or later. The CVS tree
1008 may require special patches to work properly on the ia64.
1010 Configuring and compiling GNU Libc for Linux/ia64
1011 =================================================
1013 The library requires Linux kernel version 2.4.0-test4-000728 or
1014 later to funtion properly. Besides that it support for debug libraries
1015 is currently untested. Hence the following options
1016 are required for configuring the library:
1018 --disable-debug --enable-kernel=2.4.0
1020 It is also important that you make sure the library picks up the
1021 appropriate kernel header files, if you do not have recent enough
1022 kernel headers in /usr/src/linux/include, you should use the
1023 --with-headers=<path> option to specify the location.
1025 As an example I personally use the following options to configure
1030 --enable-kernel=2.4.0
1032 --enable-add-ons=yes
1034 --with-headers=/home/jes/linux/include
1039 Jes Sorensen <jes@linuxcare.com>,
1041 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1055 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1057 * New xdr functions are added; some rpc functions are now 64bit clean.
1059 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1061 * Fixed known incompatibilities with glibc 2.0.
1063 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1065 * Optimized a number of functions (especially the ELF dynamic loader).
1067 * Update timezone data files.
1069 * lots of charmaps corrections
1071 * some new locale definitions and charmaps
1076 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1077 conform to POSIX member type requirements. Symbol versions have been
1078 adjusted as needed within the library, and for direct use by applications,
1079 but there is potential for problems if third-party libraries use
1080 struct timeval as part of their interface. This does not present
1081 a problem for X and other "essential" system libraries.
1083 * An additional locale model to support C++ Standard Library locale
1084 model and probably more was implemented by Ulrich Drepper.
1086 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1089 * Miles Bader provided the `argp' function family to support hierachical
1090 command line argument parsing, layered on top of getopt.
1092 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1094 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1097 * scanf recognizes the %a and %A format for scanning floating point numbers.
1099 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1100 information and interfaces for the available integer types.
1102 * about 130 new math functions were added to implement the ISO C9x math
1105 * the new header <complex.h> contains definitions of the complex math
1106 functions from ISO C 9X.
1108 * the new header <tgmath.h> defines generic macros to use complex or
1109 real valued functions.
1111 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1113 * Andreas Jaeger provided a test suite for the math library.
1115 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1117 * Ulrich Drepper added character set conversion functions (iconv).
1119 * Optimized string functions have been added.
1121 * The localedata addon is now part of glibc.
1123 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1125 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1126 daemon for NSS (nscd).
1128 Missing a better place here are some numbers on improvements. Under
1129 Linux 2.1.125 un-tar-ing the kernel sources takes
1133 using local files 12.19s 6.88s 22.91s
1135 using NIS 13.92s 8.91s 26.34s
1137 using NIS & nscd 10.37s 7.34s 25.30s
1139 using NIS+ 27.57s 30.37s 640.46s
1141 using NIS+ & nscd 10.25s 7.83s 26.51s
1143 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1145 Keep in mind that non-namelookup related operations dominate above times.
1146 It was just a common complain that using NIS+ unpacking the kernel is
1149 [1] The old nscd implementation is not available anymore since it was
1150 distributed with glibc up to version 2.0.98 and thus is now replaced.
1152 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1154 * Mark Kettenis provided a Hesiod NSS module.
1156 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1157 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1159 * rcmd can now handle netgroups (Dick Streefland).
1161 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1164 * Support for the IPv6 protocol has been added to the socket API, as per the
1165 latest draft standards.
1167 * Support for Linux 2.2 has been added.
1169 * Interface changes relative to the latest 2.0.x release:
1170 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1171 addseverity NEW: Unix98
1172 alphasort64 NEW: LFS
1173 argp_err_exit_status NEW: argp, GNU ext
1174 argp_error NEW: argp, GNU ext
1175 argp_failure NEW: argp, GNU ext
1176 argp_help NEW: argp, GNU ext
1177 argp_parse NEW: argp, GNU ext
1178 argp_program_bug_address NEW: argp, GNU ext
1179 argp_program_version NEW: argp, GNU ext
1180 argp_program_version_hook NEW: argp, GNU ext
1181 argp_state_help NEW: argp, GNU ext
1182 argp_usage NEW: argp, GNU ext
1183 authdes_create NEW: Secure RPC
1184 authdes_getucred NEW: Secure RPC
1185 authdes_pk_create NEW: Secure RPC
1186 backtrace NEW: GNU ext.
1187 backtrace_symbols NEW: GNU ext.
1188 backtrace_symbols_fd NEW: GNU ext.
1190 cacosf NEW: ISO C 9x
1191 cacosh NEW: ISO C 9x
1192 cacoshf NEW: ISO C 9x
1193 cacoshl NEW: ISO C 9x
1194 cacosl NEW: ISO C 9x
1201 casinf NEW: ISO C 9x
1202 casinh NEW: ISO C 9x
1203 casinhf NEW: ISO C 9x
1204 casinhl NEW: ISO C 9x
1205 casinl NEW: ISO C 9x
1207 catanf NEW: ISO C 9x
1208 catanh NEW: ISO C 9x
1209 catanhf NEW: ISO C 9x
1210 catanhl NEW: ISO C 9x
1211 catanl NEW: ISO C 9x
1212 cbc_crypt NEW: Secure RPC
1216 ccoshf NEW: ISO C 9x
1217 ccoshl NEW: ISO C 9x
1223 cimagf NEW: ISO C 9x
1224 cimagl NEW: ISO C 9x
1225 clearerr_locked REMOVED
1226 clntunix_create NEW: sunrpc ext
1228 clog10 NEW: ISO C 9x
1229 clog10f NEW: ISO C 9x
1230 clog10l NEW: ISO C 9x
1240 cprojf NEW: ISO C 9x
1241 cprojl NEW: ISO C 9x
1243 crealf NEW: ISO C 9x
1244 creall NEW: ISO C 9x
1249 csinhf NEW: ISO C 9x
1250 csinhl NEW: ISO C 9x
1253 csqrtf NEW: ISO C 9x
1254 csqrtl NEW: ISO C 9x
1258 ctanhf NEW: ISO C 9x
1259 ctanhl NEW: ISO C 9x
1261 des_setparity NEW: Secure RPC
1262 ecb_crypt NEW: Secure RPC
1263 endutxent NEW: Unix98
1265 exp10f NEW: ISO C 9x
1266 exp10l NEW: ISO C 9x
1270 fattach NEW: STREAMS
1271 fdetach NEW: STREAMS
1275 feclearexcept NEW: ISO C 9x
1276 fegetenv NEW: ISO C 9x
1277 fegetexceptflag NEW: ISO C 9x
1278 fegetround NEW: ISO C 9x
1279 feholdexcept NEW: ISO C 9x
1281 feraiseexcept NEW: ISO C 9x
1282 ferror_locked REMOVED
1283 fesetenv NEW: ISO C 9x
1284 fesetexceptflag NEW: ISO C 9x
1285 fesetround NEW: ISO C 9x
1286 fetestexcept NEW: ISO C 9x
1287 feupdateenv NEW: ISO C 9x
1288 fflush_locked REMOVED
1292 fgets_unlocked NEW: GNU ext.
1293 fileno_locked REMOVED
1305 fputc_locked REMOVED
1306 fputs_unlocked NEW: GNU ext.
1307 fread_unlocked NEW: GNU ext.
1312 fstatvfs NEW: Unix98
1316 ftruncate64 NEW: LFS
1318 fwrite_unlocked NEW: GNU ext.
1319 gai_strerror NEW: IPv6
1323 getchar_locked REMOVED
1325 getdate_err NEW: Unix98
1326 getdate_r NEW: GNU ext.
1328 getnameinfo NEW: IPv6
1329 getnetname NEW: Secure RPC
1330 getpmsg NEW: STREAMS
1331 getpt NEW: Unix98 PTY
1332 getrlimit64 NEW: LFS
1333 getutxent NEW: Unix98
1334 getutxid NEW: Unix98
1335 getutxline NEW: Unix98
1336 glob64 NEW: GNU ext.
1337 globfree64 NEW: GNU ext.
1338 gnu_get_libc_release NEW: GNU ext.
1339 gnu_get_libc_version NEW: GNU ext.
1340 grantpt NEW: Unix98 PTY
1341 host2netname NEW: Secure RPC
1343 iconv_close NEW: iconv
1344 iconv_open NEW: iconv
1345 if_freenameindex NEW: IPv6
1346 if_indextoname NEW: IPv6
1347 if_nameindex NEW: IPv6
1348 if_nametoindex NEW: IPv6
1349 in6addr_any NEW: IPv6
1350 in6addr_loopback NEW: IPv6
1351 inet6_isipv4mapped NEW: IPv6
1352 isastream NEW: STREAMS
1353 iswblank NEW: GNU ext.
1354 key_decryptsession NEW: Secure RPC
1355 key_decryptsession_pk NEW: Secure RPC
1356 key_encryptsession NEW: Secure RPC
1357 key_encryptsession_pk NEW: Secure RPC
1358 key_gendes NEW: Secure RPC
1359 key_get_conv NEW: Secure RPC
1360 key_secretkey_is_set NEW: Secure RPC
1361 key_setnet NEW: Secure RPC
1362 key_setsecret NEW: Secure RPC
1363 llrint NEW: ISO C 9x
1364 llrintf NEW: ISO C 9x
1365 llrintl NEW: ISO C 9x
1366 llround NEW: ISO C 9x
1367 llroundf NEW: ISO C 9x
1368 llroundl NEW: ISO C 9x
1373 lrintf NEW: ISO C 9x
1374 lrintl NEW: ISO C 9x
1375 lround NEW: ISO C 9x
1376 lroundf NEW: ISO C 9x
1377 lroundl NEW: ISO C 9x
1379 makecontext NEW: Unix98
1380 mempcpy NEW: GNU ext.
1383 modify_ldt NEW: kernel
1387 nearbyint NEW: ISO C 9x
1388 nearbyintf NEW: ISO C 9x
1389 nearbyintl NEW: ISO C 9x
1390 netname2host NEW: Secure RPC
1391 netname2user NEW: Secure RPC
1392 nexttoward NEW: ISO C 9x
1393 nexttowardf NEW: ISO C 9x
1394 nexttowardl NEW: ISO C 9x
1398 passwd2des NEW: Secure RPC
1400 pow10f NEW: GNU ext.
1401 pow10l NEW: GNU ext.
1404 printf_size NEW: GNU ext.
1405 printf_size_info NEW: GNU ext.
1406 profil_counter REMOVED
1407 pthread_mutexattr_getkind_np REPLACED
1408 pthread_mutexattr_setkind_np REPLACED
1409 ptsname NEW: Unix98 PTY
1410 ptsname_r NEW: Unix98 PTY
1412 putchar_locked REMOVED
1413 putgrent NEW: GNU ext.
1415 putpmsg NEW: STREAMS
1416 pututxline NEW: Unix98
1420 readdir64_r NEW: LFS
1421 remquo NEW: ISO C 9x
1422 remquof NEW: ISO C 9x
1423 remquol NEW: ISO C 9x
1425 roundf NEW: ISO C 9x
1426 roundl NEW: ISO C 9x
1428 scalbln NEW: ISO C 9x
1429 scalblnf NEW: ISO C 9x
1430 scalblnl NEW: ISO C 9x
1432 sendfile NEW: kernel
1433 setcontext NEW: Unix98
1434 setrlimit64 NEW: LFS
1435 setutxent NEW: Unix98
1437 sigignore NEW: Unix98
1438 sigqueue NEW: POSIX.1b
1439 sigrelse NEW: Unix98
1440 sigset NEW: POSIX.1b
1441 sigtimedwait NEW: POSIX.1b
1442 sigwaitinfo NEW: POSIX.1b
1443 sincos NEW: GNU ext.
1444 sincosf NEW: GNU ext.
1445 sincosl NEW: GNU ext.
1449 strcasestr NEW: GNU ext.
1450 strtoimax NEW: ISO C 9x
1451 strtoumax NEW: ISO C 9x
1452 strverscmp NEW: GNU ext.
1453 svcauthdes_stats NEW: Secure RPC
1454 svcunix_create NEW: sunrpc etx
1455 svcunixfd_create NEW: sunrpc ext
1456 swapcontext NEW: Unix98
1457 tcgetsid NEW: Unix98 PTY
1458 tdestroy NEW: GNU ext.
1459 tgamma NEW: ISO C 9x
1460 tgammaf NEW: ISO C 9x
1461 tgammal NEW: ISO C 9x
1465 truncf NEW: ISO C 9x
1466 truncl NEW: ISO C 9x
1468 unlockpt NEW: Unix98 PTY
1469 updwtmpx NEW: Unix98
1470 user2netname NEW: Secure RPC
1471 utmpxname NEW: Unix98
1472 versionsort NEW: GNU ext.
1473 versionsort64 NEW: GNU ext.
1475 wcscasecmp NEW: GNU ext.
1476 wcsncasecmp NEW: GNU ext.
1477 wcsnlen NEW: GNU ext.
1478 wcstoimax NEW: ISO C 9x
1479 wcstoll NEW: ISO C 9x
1480 wcstoull NEW: ISO C 9x
1481 wcstoumax NEW: ISO C 9x
1483 wordexp NEW: POSIX.2
1484 wordfree NEW: POSIX.2
1485 write_profiling REMOVED
1486 xdecrypt NEW: Secure RPC
1487 xdr_authdes_cred NEW: Secure RPC
1488 xdr_authdes_verf NEW: Secure RPC
1489 xdr_cryptkeyarg NEW: Secure RPC
1490 xdr_cryptkeyarg2 NEW: Secure RPC
1491 xdr_cryptkeyres NEW: Secure RPC
1492 xdr_getcredres NEW: Secure RPC
1493 xdr_key_netstarg NEW: Secure RPC
1494 xdr_key_netstres NEW: Secure RPC
1495 xdr_keybuf NEW: Secure RPC
1496 xdr_keystatus NEW: Secure RPC
1497 xdr_netnamestr NEW: Secure RPC
1498 xdr_sizeof NEW: Secure RPC
1499 xdr_unixcred NEW: sunrpc ext
1500 xencrypt NEW: Secure RPC
1501 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1512 * inet_ntoa is thread-safe
1514 * updwtmp is moved from libutil to libc
1516 * rewrite of cbrt function
1518 * update of timezone data
1532 * add atoll function
1534 * fix complex problems in Berkeley DB code
1536 * fix math functions
1540 * fixed lots of header problems (especially Linux/GNU specific)
1542 * dynamic loader preserves all registers
1544 * Roland McGrath provided support for handling of auxiliary objects in
1545 the ELF dynamic loader.
1547 * support for parallel builds is improved
1551 * GNU extensions are no longer declared by default. To enable them you
1552 must define the macro `_GNU_SOURCE' in your program or compile with
1555 * The library has changed from using GNU ld symbol aliases to using weak
1556 symbols where available. The ELF object file format supports weak
1557 symbols; GNU ld also supports weak symbols in the a.out format. (There
1558 is also now support for other GNU ld extensions in ELF. Use the
1559 `--with-elf' option to configure to indicate you have ELF, and
1560 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1561 of many files which contained only symbol aliases, reducing the size of
1562 the source and the compiled library; many other files were renamed to
1563 less cryptic names previously occupied by the symbol alias files.
1564 There is a new header file <elf.h> for programs which operate on
1565 files in the ELF format.
1567 * Converted to Autoconf version 2, so `configure' has more options.
1568 Run `configure --help' to see the details.
1570 * The library can now be configured to build profiling, highly-optimized
1571 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1572 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1573 `configure' enable building these extra libraries. The shared library is
1574 built by default when using both ELF and GNU ld. When shared libraries
1575 are enabled, the new library `-ldl' is available for arbitrary run-time
1576 loading of shared objects; its interface is defined in <dlfcn.h>. The
1577 new header file <link.h> gives access to the internals of the run-time
1578 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1579 application of same name on other systems and it provides information
1580 about dynamically linked binaries.
1582 * The C library now provides the run-time support code for profiling
1583 executables compiled with `-pg'. Programs can control the profiling code
1584 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1585 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1586 the support for this file format was contributed by David Mosberger-Tang.
1588 * The math code has been replaced with a math library based on fdlibm from
1589 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1590 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1591 functions. The math functions now reside in a separate library, so
1592 programs using them will need to use `-lm' their linking commands.
1594 * John C. Bowman contributed optimized ix87 assembler inline functions.
1596 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1597 mechanism similar to that found in Solaris 2. This is now used for the
1598 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1599 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1600 file controls what services are used for each individual database. This
1601 works by loading shared libraries with names specified in `nsswitch.conf',
1602 so service modules can be changed or added at any time without even
1603 relinking any program. Currently there are the file, db, and NIS based
1604 NSS services available.
1606 * The new functions `strtoq' and `strtouq' parse integer values from
1607 strings, like `strtol' and `strtoul', but they return `long long int' and
1608 `unsigned long long int' values, respectively (64-bit quantities).
1610 * The new functions `strtof' and `strtold' parse floating-point values from
1611 strings, like `strtod', but they return `float' and `long double' values,
1612 respectively (on some machines `double' and `long double' are the same).
1614 * Ulrich Drepper has contributed new implementations of the floating-point
1615 printing and reading code used in the `printf' family of functions and
1616 `strtod', `strtof', and `strtold'. These new functions are perfectly
1617 accurate, and much faster than the old ones.
1619 * The implementation of the POSIX locale model was completely rewritten by
1620 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1621 to compile the POSIX locale definition.
1623 * The former dummy implementations of the strcoll and strxfrm function are
1624 now replaced by fully functional code contributed by Ulrich Drepper. The
1625 collation information comes from the POSIX locale definitions.
1627 * The new header <langinfo.h> defines an interface for accessing
1628 various locale-dependent data (using the locale chosen with `setlocale').
1630 * Ulrich Drepper has contributed a new suite of functions for operation on
1631 wide-character and multibyte-character strings, in <wchar.h>;
1632 and classification and case conversion of wide characters, in <wctype.h>.
1633 These new functions are conforming to the ISO C, Amendement 1 specification.
1635 * There is now a second implementation of the standard I/O library available.
1636 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1637 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1639 * You can now use positional parameter specifications in format strings
1640 for the `printf' and `scanf' families of functions. For example,
1641 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1642 ``Number 6, Mr Jones''. This is mainly useful when providing different
1643 format strings for different languages, whose grammars may dictate
1644 different orderings of the values being printed. To support this
1645 feature, the interface for `register_printf_handler' has changed; see
1646 the header file <printf.h> for details.
1648 * The `printf' and `scanf' families of functions now understand a new
1649 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1650 to group numbers as indicated by the locale; for `scanf' and friends, this
1651 says to accept as valid only a number with all the proper grouping
1652 separators in the right places. In the default "C" locale, numbers are
1653 not grouped; but locales for specific countries will define the usual
1654 conventions (i.e. separate thousands with `,' in the US locale).
1656 * The pgrp functions have been regularized, slightly incompatibly but much
1657 less confusingly. The core functions are now `getpgid' and `setpgid',
1658 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1659 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1660 provided for compatibility. There is no longer an incompatible `getpgrp'
1661 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1663 * The new header file <fts.h> and suite of functions simplify programs that
1664 operate on directory trees. This code comes from 4.4 BSD.
1666 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1667 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1668 NSS scheme used in glibc.
1670 * There is a new malloc debugging hook `__memalign_hook'.
1672 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1673 `unsigned int' in <sys/types.h>. These are for compatibility only and
1674 their use is discouraged.
1676 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1677 done differently, so that it works even without GNU ld.
1679 * New function `euidaccess' checks allowed access to a file like `access',
1680 but using the effective IDs instead of the real IDs.
1682 * The time zone data files have been updated for the latest and greatest
1683 local time conventions of the countries of the world.
1685 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1688 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1689 for formatting floating-point numbers. They are provided only for
1690 compatibility; new programs should use `sprintf' instead. There are
1691 also equivalent function for the `long double' floating-point type and
1692 all functions also exist in a reentrant form.
1694 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1695 functions for maintaining the login-record files (primarily of use to
1696 system programs such as `login'), and convenient functions for
1697 allocating and initializing a pseudo-terminal (pty) device.
1699 * Ulrich Drepper has contributed new support for System V style
1700 shared memory and IPC on systems that support it.
1702 * Ulrich Drepper has contributed several miscellaneous new functions found
1703 in System V: The `hsearch' family of functions provide an effective
1704 implementation of hash tables; `a64l' and `l64a' provide a very simple
1705 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1708 * Ulrich Drepper has contributed new reentrant counterparts for the
1709 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1711 * Ulrich Drepper has contributed new, highly-optimized versions of several
1712 string functions for the i486/Pentium family of processors.
1714 * Ulrich Drepper has updated the Linux-specific code, based largely
1715 on work done in Hongjiu Lu's version of GNU libc for Linux.
1716 The GNU library now supports Linux versions 2.0.10 and later,
1717 using the ELF object file format (i[3456]86-*-linux).
1719 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1721 * David Mosberger-Tang and Richard Henderson have ported the C library
1722 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1723 dynamic linking support for ELF/Alpha.
1725 * Richard Henderson contributed several Alpha optimized assembler function
1726 for arithmetic and string handling.
1728 * Ulrich Drepper has contributed a new set of message catalog functions to
1729 support multiple languages using the <libintl.h> interface, for use with
1730 his new package GNU gettext. Translation volunteers have contributed
1731 catalogs of the library's messages in Spanish, German, and Korean.
1733 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1734 program and the `catgets' function for reading the catalog files it
1735 creates. (The <libintl.h> interface is preferred; we include the
1736 <nl_types.h> interface using `catgets' only for source compatibility with
1737 programs already written to use it.)
1739 * New header file <values.h> gives SVID-compatible names for <limits.h>
1742 * Various new macros, declarations, and small header files for compatibility
1745 * New function `group_member' is a convenient way to check if a process has
1746 a given effective group ID.
1748 * When using GCC 2.7 and later, the socket functions are now declared in a
1749 special way so that passing an argument of type `struct sockaddr_in *',
1750 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1751 `struct sockaddr *' type, does not generate a type-clash warning.
1753 * New function `error' declared in header file <error.h> is a convenient
1754 function for printing error messages and optionally exiting; this is the
1755 canonical function used in GNU programs. The new functions `err', `warn',
1756 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1757 doing the same thing.
1759 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1760 POSIX.2 `glob' function to do ~ and {...} expansion.
1762 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1763 `clearenv' which is used in POSIX.9 is also available.
1765 * New function `getsid' returns session ID number on systems that support it.
1767 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1768 files <db.h> and <mpool.h> provide a rich set of functions for several
1769 types of simple databases stored in memory and in files, and <ndbm.h> is
1770 an old `ndbm'-compatible interface using the `db' functions. Link with
1771 `-ldb' to get these functions.
1773 * New macro `strdupa' copies a string like `strdup', but uses local stack
1774 space from `alloca' instead of dynamic heap space from `malloc'.
1776 * New function `strnlen' is like `strlen' but searches only a given maximum
1777 number of characters for the null terminator. `stpncpy', `strndup' and
1778 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1781 * New function `statfs' in header <sys/statfs.h>.
1783 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1784 provide convenient functions for operating on blocks of null-terminated
1787 * A new suite of functions in <utmp.h> handle all the details of reading
1788 and writing the utmp file.
1790 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1793 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1794 completely POSIX compliant and also implemented the extended functionality
1795 to handle alternate digit representation and alternate era date formats.
1797 * Ulrich Drepper provided an implementation of the `strptime' function
1798 defined in XPG4.2 which transforms a string into a `struct tm' value.
1800 * Paul Eggert provided the tzselect shell script as part of the timezone
1801 code. The shell script makes it easy to select the correct timezone
1804 * The implementation of the malloc family of functions is completely replaced
1805 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1806 The implementation uses the mmap function (if available) and it is
1807 optimized for the use in multi threaded programs.
1809 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1810 functions. This new functionality is usable by specifying a special
1811 salt string and it is compatible with implementation on *BSD systems.
1813 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1814 `getsubopt' to handle second level command line options, `bsd_signal'
1815 to access BSD style `signal' functionality, the obsolete `regexp' style
1818 * the `lchown' function is available on system which support this
1821 * The implementation of the shadow password handling function was contributed
1824 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1826 * POSIX.1g support was added. The <sys/select.h> header is available,
1827 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1828 implementation of `getaddrinfo'.
1832 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1834 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1835 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1837 * The new function `daemon' from 4.4 BSD is useful for server programs that
1838 want to put themselves in the background.
1840 * Joel Sherrill has contributed support for several standalone boards that
1841 run without an operating system.
1843 * `printf', `scanf' and friends now accept a `q' type modifier for long
1844 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1846 * All of the code taken from BSD (notably most of the math and networking
1847 routines) has been updated from the BSD 4.4-Lite release.
1849 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1851 * The new functions `getdomainname' and `setdomainname' fetch or change the
1852 YP/NIS domain name. These are system calls which exist on systems which
1855 * The time zone data files have been updated for the latest international
1858 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1859 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1863 * The C library now includes support for Sun RPC, from Sun's free
1864 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1865 are included. (There is still no support for YP.)
1867 * Tom Quinn has contributed a port of the C library to SGI machines running
1868 Irix 4 (mips-sgi-irix4).
1870 * The new `lockf' function is a simplified interface to the locking
1871 facilities of `fcntl', included for compatibility.
1873 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1875 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1877 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1880 * The error message printed by `assert' for a failed assertion now includes
1881 the name of the program (if using GNU ld) and the name of the calling
1882 function (with versions of GCC that support this).
1884 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1886 * The library now includes the <sys/mman.h> header file and memory
1887 management functions `mmap', `munmap', `mprotect', `msync', and
1888 `madvise', on systems that support those facilities.
1890 * The interface for `mcheck' has changed slightly: the function called to
1891 abort the program when an allocation inconsistency is detected now takes
1892 an argument that indicates the type of failure. The new function
1893 `mprobe' lets you request a consistency check for a particular block at
1894 any time (checks are normally done only when you call `free' or `realloc'
1897 * It is now possible to easily cross-compile the C library, building on one
1898 system a library to run on another machine and/or operating system. All
1899 you need to do is set the variable `HOST_CC' in `configparms' to the
1900 native compiler for programs to run on the machine you are building on (a
1901 few generator programs are used on Unix systems); set `CC' to the
1904 * The new function `fexecve' (only implemented on the GNU system) executes
1905 a program file given a file descriptor already open on the file.
1909 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1910 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1912 * You can set the variable `libprefix' in `configparms' to specify a prefix
1913 to be prepended to installed library files; this makes it easy to install
1914 the GNU C library to be linked as `-lgnuc' or whatever.
1916 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1917 copies a limited number of characters from a string, and returns the
1918 address of the last character written.
1920 * You no longer need to check for whether the installed `stddef.h' is
1921 compatible with the GNU C library. configure now checks for you.
1923 * You can now define a per-stream `fileno' function to convert the
1924 stream's cookie into an integral file descriptor.
1926 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1927 allocates zero bytes of storage, and returns a unique pointer which
1928 you can pass to `realloc' or `free'. The behavior is undefined if
1929 you dereference this pointer.
1931 * The C library now runs on Sony NEWS m68k machines running either
1932 NewsOS 3 or NewsOS 4.
1934 * The new `syscall' function is a system-dependent primitive function
1935 for invoking system calls. It has the canonical behavior on Unix
1936 systems, including unreliable return values for some calls (such as
1937 `pipe', `fork' and `getppid').
1939 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1940 to `EAGAIN', which is the preferred name. On systems whose kernels
1941 use two distinct codes, the C library now translates EWOULDBLOCK to
1942 EAGAIN in every system call function.
1946 * The GNU C Library Reference Manual is now distributed with the library.
1947 `make dvi' will produce a DVI file of the printed manual.
1948 `make info' will produce Info files that you can read on line using C-h i
1949 in Emacs or the `info' program.
1950 Please send comments on the manual to bug-glibc-manual@gnu.org.
1952 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1954 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1956 * Jason Merrill has contributed a port to the Sequent Symmetry running
1957 Dynix version 3 (i386-sequent-dynix).
1959 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1960 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1962 * New function `memory_warnings' lets you arrange to get warnings when
1963 malloc is running out of memory to allocate, like Emacs gives you.
1965 * The C library now contains the relocating allocator used in Emacs 19 for
1966 its editing buffers. This allocator (ralloc) minimizes allocation
1967 overhead and fragmentation by moving allocated regions around whenever it
1968 needs to. You always refer to a ralloc'd region with a "handle" (a
1969 pointer to a pointer--an object of type `void **').
1971 * There is a new `printf' format: `%m' gives you the string corresponding
1972 to the error code in `errno'.
1974 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1975 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1976 pass, the `a' modifier says to fill in a `char **' you pass with a
1979 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1980 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1981 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1983 * `mkstemp' is a traditional Unix function to atomically create and open a
1984 uniquely-named temporary file.
1988 * The standard location for the file that says what the local timezone is
1989 has changed again. It is now `/usr/local/etc/localtime' (or more
1990 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1992 * The distribution no longer contains any files with names longer than 14
1995 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1996 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1998 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2002 * The configuration process has changed quite a bit. The `configure'
2003 script is now used just like the configuration scripts for other GNU
2004 packages. The `sysdeps' directory hierarchy is much rearranged.
2005 The file `INSTALL' explains the new scheme in detail.
2007 * The header files no longer need to be processed into ANSI C and
2008 traditional C versions. There is just one set of files to install, and
2009 it will work with ANSI or old C compilers (including `gcc -traditional').
2011 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2012 MIPS DECStation running Ultrix 4.
2014 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2015 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2016 made itself into a shared library.
2018 * Yet further improved support for the i386, running 4.3 BSD-like systems
2019 (such as Mach 3 with the Unix single-server), or System V.
2021 * New function `strncasecmp' to do case-insensitive string comparison
2022 with limited length.
2024 * New function `strsep' is a reentrant alternative to `strtok'.
2026 * New functions `scandir' and `alphasort' for searching directories.
2028 * New function `setenv' is a better interface to `putenv'.
2030 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2031 function for traversing a directory tree.
2033 * The GNU obstack package is now also part of the C library.
2034 The new function `open_obstack_stream' creates a stdio stream that
2035 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2036 formatted output directly to an obstack.
2038 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2039 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2041 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2043 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2044 things to your strings.
2046 * There are some new test programs: test-fseek, testmb, and testrand.
2048 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2049 These ports are not finished, but are a good starting place for really
2050 supporting those systems.
2052 * `/etc/localtime' is now the standard location for the file that says what
2053 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2054 This follows the general principle that `/etc' is the place for all local
2055 configuration files.
2057 * The C library header files now use `extern "C"' when used by the C++
2058 compiler, so the C library should now work with C++ code.
2060 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2061 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2064 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2065 function which uses the `merge sort' algorithm, and is said to be
2066 significantly faster than the old GNU `qsort' function. Merge sort is
2067 now the standard `qsort' function. The new algorithm can require a lot
2068 of temporary storage; so, the old sorting function is called when the
2069 required storage is not available.
2071 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2072 provides the Unix `crypt' function, plus some other entry points.
2074 * The code and header files taken from 4.4 BSD have been updated with the
2075 latest files released from Berkeley.
2077 ----------------------------------------------------------------------
2078 Copyright information:
2080 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2082 Permission is granted to anyone to make or distribute verbatim copies
2083 of this document as received, in any medium, provided that the
2084 copyright notice and this permission notice are preserved,
2085 thus giving the recipient permission to redistribute in turn.
2087 Permission is granted to distribute modified versions
2088 of this document, or of portions of it,
2089 under the above conditions, provided also that they
2090 carry prominent notices stating who last changed them.
2093 version-control: never
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