1 GNU C Library NEWS -- history of user-visible changes. 2012-1-8
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 13525, 13526, 13527, 13528, 13529, 13531, 13532, 13533, 13547, 13530,
13 13551, 13552, 13553, 13555, 13559
17 + define static_assert
21 + declare at_quick_exit and quick_exit also for ISO C11
23 + aligned_alloc. NB: The code is deliberately allows the size parameter
24 to not be a multiple of the alignment. This is a moronic requirement
25 in the standard but it is only a requirement on the caller, not the
30 + uchar.h support added
32 + CMPLX, CMPLXF, CMPLXL added
34 Implemented by Ulrich Drepper.
36 * Support for the IA-64 is removed and could live in ports.
38 * Remove support for anything but ELF binary format
40 * Checking versions of poll, ppoll added.
41 Implemented by Ulrich Drepper.
45 * The following bugs are resolved with this release:
47 6779, 6783, 9696, 10103, 10709, 11589, 12403, 12786, 12840, 12847, 12868,
48 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962, 13007,
49 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092, 13096,
50 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179, 13185,
51 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335, 13337,
52 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472, 13484,
53 13506, 13515, 13523, 13524, 13538, 13540
55 * New program pldd to list loaded object of a process
56 Implemented by Ulrich Drepper.
58 * Add nss_db support back to glibc. No more dependency on Berkeley db
59 and support for initgroups lookups.
60 Implemented by Ulrich Drepper.
62 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
65 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
68 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
70 Contributed by Liubov Dmitrieva.
72 * Optimized strchr and strrchr for SSE on x86-32.
73 Contributed by Liubov Dmitrieva.
75 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
76 for x86-64 and x86-32.
77 Contributed by Liubov Dmitrieva.
79 * New interfaces: scandirat, scandirat64
80 Implemented by Ulrich Drepper.
82 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
83 Implemented by Ulrich Drepper.
85 * nscd now also caches the netgroup database.
86 Implemented by Ulrich Drepper.
88 * Integrate libm with gcc's -ffinite-math-only option.
89 Implemented by Ulrich Drepper.
91 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
92 to math functions. Implemented by Ulrich Drepper.
94 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
95 Implemented by Ulrich Drepper.
97 * New Linux interfaces: process_vm_readv, process_vm_writev
99 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
100 Implemented by Ulrich Drepper.
102 * Optimized nearbyint and strcasecmp for PPC.
103 Implemented by Adhemerval Zanella.
105 * New locales: bho_IN, unm_US, es_CU, ta_LK
109 * The following bugs are resolved with this release:
111 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
112 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
113 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
114 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
115 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
116 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
117 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
118 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
119 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
120 12795, 12811, 12813, 12814, 12841
122 * The RPC implementation in libc is obsoleted. Old programs keep working
123 but new programs cannot be linked with the routines in libc anymore.
124 Programs in need of RPC functionality must be linked against TI-RPC.
125 The TI-RPC implementation is IPv6 enabled and there are other benefits.
127 Visible changes of this change include (obviously) the inability to link
128 programs using RPC functions without referencing the TI-RPC library and the
129 removal of the RPC headers from the glibc headers.
130 Implemented by Ulrich Drepper.
132 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
133 syncfs, setns, sendmmsg
135 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
136 yue_HK, lij_IT, mhr_RU
138 * New encodings: CP770, CP771, CP772, CP773, CP774
140 * New program sotruss to trace calls through PLTs
141 Implemented by Ulrich Drepper.
143 * The malloc hook implementation is marked deprecated and will be removed
144 from the default implementation in the next version. The design never
145 worked ever since the introduction of threads. Even programs which do
146 not create threads themselves can use multiple threads created internally.
150 * The following bugs are resolved with this release:
152 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
153 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
154 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
155 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
158 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
160 * POWER7 optimizations: memset, memcmp, strncmp
162 * New optimized string functions for x86-64: strnlen (SSE2),
163 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
164 Implemented by Ulrich Drepper.
168 * The following bugs are resolved with this release:
170 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
171 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
172 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
173 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
174 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
175 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
176 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
177 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
179 * New interfaces: pthread_getname_np, pthread_setname_np
181 * New Linux interface: recvmmsg
183 * STT_GNU_IFUNC implemented for Sparc by David Miller.
185 * The dynamic linker now recognizes supported ABI versions from the
186 EI_ABIVERSION field in the ELF header.
187 Implemented by Ulrich Drepper.
189 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
190 will not be used to fill in password fields in the passwd.byname replies.
191 Instead it is used to synthesize the shadow.byname table, should it be
192 missing. This is a useful mode in some installations involving Solaris.
193 Implemented by Ulrich Drepper.
195 * New locales: kok_IN, sq_MK, cv_RU
199 * The following bugs are resolved with this release:
201 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
202 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
203 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
204 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
205 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
206 10789, 10817, 10823, 10840, 10847
208 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
210 Implemented by Ulrich Drepper.
212 * Checking version of longjmp added that fails if an uninitialized stack
213 frame would be created. Implemented by Ulrich Drepper.
215 * STT_GNU_IFUNC is now supported in static executables.
216 Implemented by H.J. Lu.
218 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
220 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
221 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
222 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
223 Contributed by H.J. Lu.
225 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
226 Implemented by Ulrich Drepper.
228 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
230 Contributed by H.J. Lu.
232 * Support for fma instruction in AVX on x86-64.
233 Implemented by H.J. Lu and Ulrich Drepper.
235 * AVX support in x86-64 auditing support in ld.so.
236 Implemented by H.J. Lu.
238 * STB_GNU_UNIQUE support added.
239 Implemented by Ulrich Drepper.
241 * Implement second fallback mode for optimized DNS lookup for even more
242 broken environments. If two requests from the same port are not
243 handled correctly close the socket and open a new one before sending
244 the second request. The 'single-request-reopen' option in /etc/resolv.conf
245 can be used to select this mode right away, instead of rediscovering the
246 necessity is every process again.
247 Implemented by Ulrich Drepper.
249 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
250 Implemented by Adam Tkac.
252 * Optimized iconv conversions for S390x.
253 Implemented by Andreas Krebbel.
255 * Using condvars with PI mutexes is now more efficient due to kernel
256 support for requeueing to PI futexes. NPTL support added for x86-64.
257 Implemented by Ulrich Drepper.
259 * New locales: ps_AF, my_MM
263 * The following bugs are resolved with this release:
265 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
266 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
267 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
268 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
269 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
271 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
272 Implemented by Ulrich Drepper.
274 * New Linux interfaces: accept4, fallocate, fallocate64.
275 Implemented by Ulrich Drepper.
277 * Correct declarations of string function when used in C++ code. This
278 could lead to compile errors for invalid C++ code.
280 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
283 * New POSIX 2008 interface: psiginfo
284 Implemented by Ulrich Drepper.
286 * New ISO C++1x interfaces: quick_exit, at_quick_exit
287 Implemented by Ulrich Drepper.
289 * Support for selecting between multiple function definitions at runtime
290 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
292 * The libcrypt library can now use the hash function implementations in
293 NSS. Implemented by Ulrich Drepper.
295 * The malloc implementation can be compiled to be less memory efficient
296 but higher performing in multi-threaded programs.
297 Implemented by Ulrich Drepper.
299 * New locales: nan_TW@latin, ks_IN
301 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
302 Implemented by Ulrich Drepper.
304 * Extended printf hook support. It is possible to use user-defined types
305 and extend existing format specifiers.
306 Implemented by Ulrich Drepper.
308 * Handling for group shadow files has been added.
309 Implemented by Ulrich Drepper.
311 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
312 servers (the case, e.g., for some people using the built-in DNS
313 server in ADSL modems/routers). There is a once-per-process timeout
314 in case of a broken server. To avoid it, users can run nscd or put
315 'options single-request' in /etc/resolv.conf.
316 Implemented by Ulrich Drepper.
320 * The following bugs are resolved with this release:
322 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
323 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
324 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
325 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
326 6968, 6974, 6980, 6995, 7008, 7009, 7029
328 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
329 up at the same time. Implemented by Ulrich Drepper.
331 * TLS descriptors for LD and GD on x86 and x86-64.
332 Implemented by Alexandre Oliva.
334 * getaddrinfo now handles DCCP and UDPlite.
335 Implemented by Ulrich Drepper.
337 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
338 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
339 Implemented by Ulrich Drepper.
341 * New implementation of memmem, strstr, and strcasestr which is O(n).
342 Implemented by Eric Blake.
344 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
346 * Implement "e" option for popen to open file descriptor with the
347 close-on-exec flag set. Implemented by Ulrich Drepper.
349 * Implement "b" mode for fmemopen. In this mode writes writes don't
350 implicitly add a NUL byte and seeks from the end of the buffer really
351 use the buffer end, not the string length as the basis.
352 Implemented by Ulrich Drepper.
354 * Many functions, exported and internal, now atomically set the close-on-exec
355 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
357 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
359 Implemented by Pravin Satpute.
361 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
365 * The following bugs are resolved with this release:
367 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
368 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
369 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
370 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
371 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
372 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
373 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
375 * New locales: bo_CN, bo_IN, shs_CA.
377 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
379 * Sorting rules for some Indian languages (Devanagari and Gujarati).
380 Implemented by Pravin Satpute.
382 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
384 * nscd caches now all timeouts for DNS entries
385 Implemented by Ulrich Drepper.
387 * nscd is more efficient and wakes up less often.
388 Implemented by Ulrich Drepper.
390 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
391 vdprintf, and obstack_vprintf.
392 Implemented by Jakub Jelinek.
394 * Faster memset for x86-64.
395 Implemented by Harsha Jagasia and H.J. Lu.
397 * Faster memcpy on x86.
398 Implemented by Ulrich Drepper.
400 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
401 Implemented by Ulrich Drepper.
403 * Faster sqrt and sqrtf implemention for some PPC variants.
404 Implemented by Stephen Munroe.
408 * The following bugs are resolved with this release:
410 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
411 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
412 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
413 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
414 5071, 5103, 5104, 5112, 5113, 5184, 5186
416 * More checking functions: fread, fread_unlocked, open*, mq_open.
417 Implemented by Jakub Jelinek and Ulrich Drepper.
419 * Extend fortification to C++. Implemented by Jakub Jelinek.
421 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
422 by not recognizing 'a' as a modifier when those specs are requested.
423 Implemented by Jakub Jelinek.
425 * PPC optimizations to math and string functions.
426 Implemented by Steven Munroe.
428 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
429 options to be passed. Implemented by Ulrich Drepper.
431 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
433 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
434 Implemented by Ulrich Drepper.
436 * Handle private futexes in the NPTL implementation.
437 Implemented by Jakub Jelinek and Ulrich Drepper.
439 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
440 Implemented by Roland McGrath and Ulrich Drepper.
442 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
444 * SHA-256 and SHA-512 based password encryption.
445 Implemented by Ulrich Drepper.
447 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
448 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
451 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
452 Implemented by Ulrich Drepper.
456 * The following bugs are resolved with this release:
458 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
459 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
460 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
461 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
462 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
463 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
464 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
467 * New Linux interfaces: epoll_pwait, sched_getcpu.
469 * New generic interfaces: strerror_l.
471 * nscd can now cache the services database. Implemented by Ulrich Drepper.
475 * The following bugs are resolved with this release:
477 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
478 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
479 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
480 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
481 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
482 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
483 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
484 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
485 3225, 3251, 3252, 3253, 3273
487 * For Linux, the sorting of addresses returned by getaddrinfo now also
488 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
489 Implemented by Ulrich Drepper.
491 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
492 Implemented by Ulrich Drepper.
494 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
496 * New iconv module for MIK. Contributed by Alexander Shopov.
498 * For sites with broken group and/or passwd database, the auto-propagate
499 option of nscd can prevent creating ID lookup entries from the results
500 of a name lookup and vice versa. This usually is no problem but some
501 site might have problems with the default behavior.
502 Implemented by Ulrich Drepper.
504 * Iterating over entire database in NIS can be slow. With the
505 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
506 to trade time for memory. The entire database will be read at once.
507 Implemented by Ulrich Drepper.
509 * The interfaces introduced in RFC 3542 have been implemented by
512 * Support for the new ELF hash table format was added by Ulrich Drepper.
514 * Support for priority inheritance mutexes added by Jakub Jelinek and
517 * Support for priority protected mutexes added by Jakub Jelinek.
519 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
520 or_IN, csb_PL, fy_NL, sr_ME.
524 * More overflow detection functions.
526 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
527 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
529 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
530 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
531 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
532 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
533 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
534 by Masahide Washizawa.
536 * It is now possible to install audit libraries for the dynamic linker using
537 LD_AUDIT. Implemented by Ulrich Drepper.
539 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
540 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
541 For a libc and libpthread that works well on Linux 2.4 kernels, we
542 recommend using the stable 2.3 branch.
544 * The new function open_wmemstream acts like open_memstream,
545 but uses a wchar_t wide character buffer.
547 * The new function ppoll is an improved version of poll, similar to pselect.
549 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
550 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
551 renameat, unlinkat, linkat, symlinkat, readlinkat.
553 * New Linux kernel system calls: unshare,
554 inotify_init, inotify_add_watch, inotify_rm_watch.
556 * The euidaccess function is now also known by the alias eaccess,
557 for compatibility with some other systems.
559 * Timezone data updated to 2006b version.
563 * The following bugs are resolved with this release:
565 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
566 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
567 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
568 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
569 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
570 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
572 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
574 * As of this release, GCC 4 can be used to compile the C Library.
576 * Timezone data updated to 2005m version.
580 * The following bugs are resolved with this release:
582 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
583 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
584 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
585 777, 787, 821, 822, 823, 825
587 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
591 * Support for RFC 3678. Real implementations exist only for Linux so far.
592 Implemented by Ulrich Drepper.
594 * nscd can now cache entries persistently. Expiring entries are reloaded.
595 For speedups the cache can be shared in memory with client processes.
596 Implemented by Ulrich Drepper.
598 * nscd can now perform SELinux checks.
599 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
601 * getaddrinfo queries are now cached. Canonical name lookup is performed
603 Implemented by Ulrich Drepper.
605 * The nothrow function attribute is used when headers are used by gcc when
606 compiling C code. This can avoid significant amounts of exception
609 * The malloc functions perform more error checking and are stricter when
610 it comes to reacting on errors. The default action is to terminate
611 the process after showing an error message. Implemented by Ulrich Drepper.
613 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
614 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
616 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
617 namespaces using the new function dlmopen(). This feature is of course,
618 like most other dynamic loading functionality, not available in statically
619 linked applications. Implemented by Ulrich Drepper.
621 * Low-overhead boundary checking variants of string and some stdio functions
622 were added. These are to be used in conjunction with a gcc patch by
623 Jakub Jelinek which adds calls to these functions if possible.
624 Implemented by Jakub Jelinek and Ulrich Drepper.
626 * Old code for several operating systems and machine architectures that
627 have not been in working condition in a long time have been removed from
628 the main source tree maintained by the GNU C Library's maintainers.
629 These files are now reside in the separate `ports' source module
630 that is usable as an add-on when building the library.
634 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
635 interrogate the dynamic linker, compatible with the Solaris interface.
637 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
638 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
640 * getifaddrs now uses the netlink interface on Linux to get its information.
641 Implemented by Thorsten Kukuk.
643 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
644 Implemented by Ulrich Drepper.
646 * support for non-executable stacks on x86 has been added. Changes mostly
649 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
652 * getaddrinfo now performs destination address selection according to
657 * Thread-safe interfaces for many functions that access locale data
658 were added in version 2.3, but these features were omitted from NEWS.
659 Many functions have variants with an `_l' suffix that take a `locale_t'
660 object as a parameter rather than consulting the current locale.
661 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
662 create and maintain `locale_t' objects. Additionally, the new function
663 `uselocale' sets "the current locale" (as used by functions not so
664 parameterized) set for an individual thread. These features were added
665 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
667 * The functions getresuid, getresgid, setresuid, and setresgid, which
668 have long been available on Linux, are now declared in <unistd.h>
669 and are now also available on the Hurd.
671 * ELF thread-local storage support (TLS) now works on x86-64.
673 * The new dynamic string token $LIB is expanded in shared library names.
674 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
676 * Aldy Hernandez contributed complete software floating point support for
677 PowerPC machines with no FPU.
679 * fexecve is implemented on Linux.
681 * The `btowc' function should work at least twice as fast due to
682 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
684 * With approriate thread add-ons cancelable functions are now implemented
685 in libc.so as well. No need to call the function in libpthread. This
686 change allowed to finally disable the incorrect and expensive handling
687 of weak definition in ld.so.
689 * Yet more PLT entries in libc.so have been removed. We finally arrived
690 at the bare minimum. Startup times improved appropriately.
692 * Support for the new Linux/x86 system call interface was added. The
693 AT_SYSINFO auxiliary vector entry is recognized and handled.
697 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
700 * iconv (the program and the interface) now accepts empty names (excluding
701 options like //TRANSLIT) to mean "use charset of current locale".
703 * localedef can now transliterate characters in strings which are not in
704 the provided charmap. The information from the input locale is used.
706 * Prelinking support was added for ELF targets. This requires additional
707 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
709 * Read-only stdio streams now use mmap to speed up operation by eliminating
710 copying and buffer underflows. To use add 'm' to the mode string of
711 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
713 * The malloc functions were completely rewritten by Wolfram Gloger based
714 on Doug Lea's malloc-2.7.0.c.
716 * Isamu Hasegawa contributed a completely new and POSIX-conformant
717 implementation of regex.
719 * Bruno Haible upgraded the iconv and locale implementation to support
722 * Contents of the LC_* and LANG environment variables in the CEN style are
723 not recognized anymore. It never was used. Change by Ulrich Drepper.
725 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
726 thread-local storage (TLS) ABI on some platforms.
727 Changes by Ulrich Drepper. SH support by Kaz Kojima.
729 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
730 EUC-JISX0213, and TSCII.
732 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
733 BSD-compatible interface for getting all network interface addresses.
734 Implementation for IPv4 by Roland McGrath.
736 * Loading of locale data is faster due to the introduction of a locale
737 archive. Implemented by Roland McGrath and Ulrich Drepper.
739 * Startup times are significantly reduced by not using exported functions
740 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
743 * Steven Munroe contributed a port to PowerPC64/Linux.
747 * The Hurd now uses the GNU libio implementation of stdio rather than the
748 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
750 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
751 with the same behavior as the Linux system call of the same name.
755 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
756 128-bit long double format.
758 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
759 IBM1161, and IBM1162 charsets.
761 * Andreas Jaeger contributed a port to x86-64/Linux.
763 * Peter Bruin contributed a port to PowerPC/Hurd.
765 * libc functions using I/O streams now can handle wide-oriented streams
768 * optimizations in the dynamic linker. Binaries created by recent binutils
769 versions start up quicker due to reduced time spent on relocations.
771 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
775 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
776 asinh, atanh, j0 for the 128-bit long double format.
778 * Bruno Haible updated all the code handling Unicode in some form to
781 * Speed of regex for single-byte locales is back to previous levels.
782 Patch by Isamu Hasegawa.
784 * Alpha, SPARC, and IA-64 now also using floating stacks.
786 * Startup time of internationalized applications greatly improved through
787 iconv cache. Use iconvconfig to generate the cache file.
788 Contributed by Ulrich Drepper.
790 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
791 severe performance problems. Patch by David Mosberger.
793 * The Hurd port got a lot more functionality like AIO, various stdio
794 extensions, etc. Mainly done by Roland McGrath.
796 * mtrace can now lookup symbols in shared libraries.
800 * Intel's IA-64 math library is largely integrated. It provides fast and
801 accurate implementatations for most basic and standard math functions
802 in float, double, and long double format.
804 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
805 and asin for the 96-bit long double format and asin, log, tan for the
806 128-bit long double format.
808 * The beginning of a last-bit accurate math library by IBM Haifa were added.
809 The basic double functions exist today. Contributed by Abraham Ziv
810 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
811 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
813 * An asynchronous name lookup library was added. The interface is designed
814 after POSIX AIO. The proposal was circulated beforehand to get comments.
815 No negative ones came in. Implemented by Ulrich Drepper.
817 * Port to S390/64bit contributed by Martin Schwidefsky
818 <schwidefsky@de.ibm.com>.
820 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
821 of functions for Linux/IA-64.
823 * The RPC code is now thread safe. Threads can now use the same service
824 of different services at the same time. Patch by Eric Norum
825 <eric.norum@usask.ca> with some help by Ulrich Drepper.
827 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
828 family of functions for Linux/S390.
830 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
831 of functions for Linux/x86.
833 * Port to Linux/CRIS contributed by Axis Communications.
837 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
838 we can now check for namespace violations and missing declarations. The
839 result is that almost all headers are now Unix-compliant (as defined in
840 the upcoming XPG6). The negative side is that some programs might need
841 corrections, too, if they depend on the incorrect form of the headers in
842 previous versions which defined too many symbols and included too many
845 * regex now handles multibyte character sets correctly.
846 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
848 * iconv (the program) does now conform to the upcoming XPG6 and handles
849 charmaps. Instead of the charset names the path of charmaps can be
850 provided and the conversion happens based on this data.
851 Contributed by Ulrich Drepper.
853 * The locale program now provides detailed information about the installed
858 only lists the names of the supported locales
862 provides details such as country, language, and codeset name.
863 Contributed by Ulrich Drepper.
867 * The gencat program now parses the input file according to the charset
868 selected by the LC_CTYPE category. This is important for stateful
869 character sets. To make generating catalogs easier there is a way
870 to overwrite the charset selected by the locale: before the first
871 message or $ quote line the catalog can contain a line like
875 to select the charset (ISO-8859-2 in this case).
877 Implemented by Shinya Hanataka and Ulrich Drepper.
879 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
880 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
881 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
883 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
884 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
886 * The LANGUAGE environment variable is now ignored unless the locale is
887 changed from the default "C" locale.
889 * The usual bug fixes.
893 * Greg McGary added runtime support for bounds checking using gcc's
894 new -fbounded-pointers option. ix86 target is complete. PowerPC
897 * Thorsten Kukuk added secure mode support to nscd.
899 * The Berkeley db libraries have been removed.
901 Related, the nss_db module is now in a separate package since it
902 obviously requires a database library being available.
904 * Wide character I/O streams implemented by Ulrich Drepper.
906 * Functions from the extended socket API added by Ulrich Drepper.
908 * Functions feenableexcept and fedisableexcept to control the
909 behaviour of individual exceptions have been added by Andreas Jaeger.
911 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
913 * The resolver code has been updated from bind 8.2.3-T5B which supports
914 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
917 This change could in some situations effect backward compatibility. Since
918 now `_res' is a thread-local instead of a global variable, modifying it
919 in one thread does not have any effect in other threads.
921 The resolver library was also extended to allow IPv6 as the transport
922 protocol for the requests. This work was done by Stig Venaas.
924 * Compatibility code for K&R C compilers has been removed from the
925 header files. A ISO C compiler is needed to use the library
926 (conforming to either C89 or C99 standard).
928 * Complete rewrite of the localedef program to support multibyte character
929 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
930 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
931 Implemented by Ulrich Drepper.
933 Bruno Haible significantly improved the generation and use of the data
934 structures for the wide character tables.
936 * Plural handling in gettext implemented by Ulrich Drepper.
938 * The utmp daemon has been removed.
940 * The port to MIPS-Linux has been finished by Andreas Jaeger.
942 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
945 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
947 * POSIX barriers implemented by Kaz Kylheku.
949 * POSIX spawn function family implemented by Ulrich Drepper.
951 * POSIX spinlocks are now available.
953 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
955 * the configure option --enable-kernel=X.Y.Z allows to strip out
956 compatibility for kernel versions before X.Y.Z. This is currently only
957 implemented for Linux.
959 * the sockaddr_in6 structure changed. The IPv6 working group added a new
960 field sin6_scope_id. This means that all programs using IPv6 should be
961 recompiled. Don't expect binary compatibility with previous glibc
964 * various conversion modules for IBM character sets contributed by
967 * IA-64 port by Jes Sorensen and HJ Lu.
969 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
970 Compiling the GNU C Library for Linux/ia64
971 ******************************************
973 Please refer to the file INSTALL in the same directory as you found
974 this file for general information about configuring and compiling
977 For general inquiries about glibc under Linux/ia64 please use the
978 following mailing list linux-ia64@linuxia64.org or one of the relevant
981 Recommended Tools for Compilation
982 =================================
984 In order for glibc-2.2 to build correctly on the ia64 you need at
985 least the following versions of the GNU tools (the :
987 * The Cygnus toolchain snapshot for the ia64 as of August 4
988 including the provided set of patches. It is however recommend
989 you use the October 24 toolchain snapshot or a more recent version.
991 OR alternatively you can try the following (the Cygnus toolchain is
992 the recommended solution):
994 * GCC and binutils, GAS and GNU LD out of CVS from
995 sources.redhat.com as of August 28, 2000 or later. The CVS tree
996 may require special patches to work properly on the ia64.
998 Configuring and compiling GNU Libc for Linux/ia64
999 =================================================
1001 The library requires Linux kernel version 2.4.0-test4-000728 or
1002 later to funtion properly. Besides that it support for debug libraries
1003 is currently untested. Hence the following options
1004 are required for configuring the library:
1006 --disable-debug --enable-kernel=2.4.0
1008 It is also important that you make sure the library picks up the
1009 appropriate kernel header files, if you do not have recent enough
1010 kernel headers in /usr/src/linux/include, you should use the
1011 --with-headers=<path> option to specify the location.
1013 As an example I personally use the following options to configure
1018 --enable-kernel=2.4.0
1020 --enable-add-ons=yes
1022 --with-headers=/home/jes/linux/include
1027 Jes Sorensen <jes@linuxcare.com>,
1029 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1043 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1045 * New xdr functions are added; some rpc functions are now 64bit clean.
1047 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1049 * Fixed known incompatibilities with glibc 2.0.
1051 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1053 * Optimized a number of functions (especially the ELF dynamic loader).
1055 * Update timezone data files.
1057 * lots of charmaps corrections
1059 * some new locale definitions and charmaps
1064 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1065 conform to POSIX member type requirements. Symbol versions have been
1066 adjusted as needed within the library, and for direct use by applications,
1067 but there is potential for problems if third-party libraries use
1068 struct timeval as part of their interface. This does not present
1069 a problem for X and other "essential" system libraries.
1071 * An additional locale model to support C++ Standard Library locale
1072 model and probably more was implemented by Ulrich Drepper.
1074 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1077 * Miles Bader provided the `argp' function family to support hierachical
1078 command line argument parsing, layered on top of getopt.
1080 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1082 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1085 * scanf recognizes the %a and %A format for scanning floating point numbers.
1087 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1088 information and interfaces for the available integer types.
1090 * about 130 new math functions were added to implement the ISO C9x math
1093 * the new header <complex.h> contains definitions of the complex math
1094 functions from ISO C 9X.
1096 * the new header <tgmath.h> defines generic macros to use complex or
1097 real valued functions.
1099 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1101 * Andreas Jaeger provided a test suite for the math library.
1103 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1105 * Ulrich Drepper added character set conversion functions (iconv).
1107 * Optimized string functions have been added.
1109 * The localedata addon is now part of glibc.
1111 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1113 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1114 daemon for NSS (nscd).
1116 Missing a better place here are some numbers on improvements. Under
1117 Linux 2.1.125 un-tar-ing the kernel sources takes
1121 using local files 12.19s 6.88s 22.91s
1123 using NIS 13.92s 8.91s 26.34s
1125 using NIS & nscd 10.37s 7.34s 25.30s
1127 using NIS+ 27.57s 30.37s 640.46s
1129 using NIS+ & nscd 10.25s 7.83s 26.51s
1131 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1133 Keep in mind that non-namelookup related operations dominate above times.
1134 It was just a common complain that using NIS+ unpacking the kernel is
1137 [1] The old nscd implementation is not available anymore since it was
1138 distributed with glibc up to version 2.0.98 and thus is now replaced.
1140 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1142 * Mark Kettenis provided a Hesiod NSS module.
1144 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1145 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1147 * rcmd can now handle netgroups (Dick Streefland).
1149 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1152 * Support for the IPv6 protocol has been added to the socket API, as per the
1153 latest draft standards.
1155 * Support for Linux 2.2 has been added.
1157 * Interface changes relative to the latest 2.0.x release:
1158 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1159 addseverity NEW: Unix98
1160 alphasort64 NEW: LFS
1161 argp_err_exit_status NEW: argp, GNU ext
1162 argp_error NEW: argp, GNU ext
1163 argp_failure NEW: argp, GNU ext
1164 argp_help NEW: argp, GNU ext
1165 argp_parse NEW: argp, GNU ext
1166 argp_program_bug_address NEW: argp, GNU ext
1167 argp_program_version NEW: argp, GNU ext
1168 argp_program_version_hook NEW: argp, GNU ext
1169 argp_state_help NEW: argp, GNU ext
1170 argp_usage NEW: argp, GNU ext
1171 authdes_create NEW: Secure RPC
1172 authdes_getucred NEW: Secure RPC
1173 authdes_pk_create NEW: Secure RPC
1174 backtrace NEW: GNU ext.
1175 backtrace_symbols NEW: GNU ext.
1176 backtrace_symbols_fd NEW: GNU ext.
1178 cacosf NEW: ISO C 9x
1179 cacosh NEW: ISO C 9x
1180 cacoshf NEW: ISO C 9x
1181 cacoshl NEW: ISO C 9x
1182 cacosl NEW: ISO C 9x
1189 casinf NEW: ISO C 9x
1190 casinh NEW: ISO C 9x
1191 casinhf NEW: ISO C 9x
1192 casinhl NEW: ISO C 9x
1193 casinl NEW: ISO C 9x
1195 catanf NEW: ISO C 9x
1196 catanh NEW: ISO C 9x
1197 catanhf NEW: ISO C 9x
1198 catanhl NEW: ISO C 9x
1199 catanl NEW: ISO C 9x
1200 cbc_crypt NEW: Secure RPC
1204 ccoshf NEW: ISO C 9x
1205 ccoshl NEW: ISO C 9x
1211 cimagf NEW: ISO C 9x
1212 cimagl NEW: ISO C 9x
1213 clearerr_locked REMOVED
1214 clntunix_create NEW: sunrpc ext
1216 clog10 NEW: ISO C 9x
1217 clog10f NEW: ISO C 9x
1218 clog10l NEW: ISO C 9x
1228 cprojf NEW: ISO C 9x
1229 cprojl NEW: ISO C 9x
1231 crealf NEW: ISO C 9x
1232 creall NEW: ISO C 9x
1237 csinhf NEW: ISO C 9x
1238 csinhl NEW: ISO C 9x
1241 csqrtf NEW: ISO C 9x
1242 csqrtl NEW: ISO C 9x
1246 ctanhf NEW: ISO C 9x
1247 ctanhl NEW: ISO C 9x
1249 des_setparity NEW: Secure RPC
1250 ecb_crypt NEW: Secure RPC
1251 endutxent NEW: Unix98
1253 exp10f NEW: ISO C 9x
1254 exp10l NEW: ISO C 9x
1258 fattach NEW: STREAMS
1259 fdetach NEW: STREAMS
1263 feclearexcept NEW: ISO C 9x
1264 fegetenv NEW: ISO C 9x
1265 fegetexceptflag NEW: ISO C 9x
1266 fegetround NEW: ISO C 9x
1267 feholdexcept NEW: ISO C 9x
1269 feraiseexcept NEW: ISO C 9x
1270 ferror_locked REMOVED
1271 fesetenv NEW: ISO C 9x
1272 fesetexceptflag NEW: ISO C 9x
1273 fesetround NEW: ISO C 9x
1274 fetestexcept NEW: ISO C 9x
1275 feupdateenv NEW: ISO C 9x
1276 fflush_locked REMOVED
1280 fgets_unlocked NEW: GNU ext.
1281 fileno_locked REMOVED
1293 fputc_locked REMOVED
1294 fputs_unlocked NEW: GNU ext.
1295 fread_unlocked NEW: GNU ext.
1300 fstatvfs NEW: Unix98
1304 ftruncate64 NEW: LFS
1306 fwrite_unlocked NEW: GNU ext.
1307 gai_strerror NEW: IPv6
1311 getchar_locked REMOVED
1313 getdate_err NEW: Unix98
1314 getdate_r NEW: GNU ext.
1316 getnameinfo NEW: IPv6
1317 getnetname NEW: Secure RPC
1318 getpmsg NEW: STREAMS
1319 getpt NEW: Unix98 PTY
1320 getrlimit64 NEW: LFS
1321 getutxent NEW: Unix98
1322 getutxid NEW: Unix98
1323 getutxline NEW: Unix98
1324 glob64 NEW: GNU ext.
1325 globfree64 NEW: GNU ext.
1326 gnu_get_libc_release NEW: GNU ext.
1327 gnu_get_libc_version NEW: GNU ext.
1328 grantpt NEW: Unix98 PTY
1329 host2netname NEW: Secure RPC
1331 iconv_close NEW: iconv
1332 iconv_open NEW: iconv
1333 if_freenameindex NEW: IPv6
1334 if_indextoname NEW: IPv6
1335 if_nameindex NEW: IPv6
1336 if_nametoindex NEW: IPv6
1337 in6addr_any NEW: IPv6
1338 in6addr_loopback NEW: IPv6
1339 inet6_isipv4mapped NEW: IPv6
1340 isastream NEW: STREAMS
1341 iswblank NEW: GNU ext.
1342 key_decryptsession NEW: Secure RPC
1343 key_decryptsession_pk NEW: Secure RPC
1344 key_encryptsession NEW: Secure RPC
1345 key_encryptsession_pk NEW: Secure RPC
1346 key_gendes NEW: Secure RPC
1347 key_get_conv NEW: Secure RPC
1348 key_secretkey_is_set NEW: Secure RPC
1349 key_setnet NEW: Secure RPC
1350 key_setsecret NEW: Secure RPC
1351 llrint NEW: ISO C 9x
1352 llrintf NEW: ISO C 9x
1353 llrintl NEW: ISO C 9x
1354 llround NEW: ISO C 9x
1355 llroundf NEW: ISO C 9x
1356 llroundl NEW: ISO C 9x
1361 lrintf NEW: ISO C 9x
1362 lrintl NEW: ISO C 9x
1363 lround NEW: ISO C 9x
1364 lroundf NEW: ISO C 9x
1365 lroundl NEW: ISO C 9x
1367 makecontext NEW: Unix98
1368 mempcpy NEW: GNU ext.
1371 modify_ldt NEW: kernel
1375 nearbyint NEW: ISO C 9x
1376 nearbyintf NEW: ISO C 9x
1377 nearbyintl NEW: ISO C 9x
1378 netname2host NEW: Secure RPC
1379 netname2user NEW: Secure RPC
1380 nexttoward NEW: ISO C 9x
1381 nexttowardf NEW: ISO C 9x
1382 nexttowardl NEW: ISO C 9x
1386 passwd2des NEW: Secure RPC
1388 pow10f NEW: GNU ext.
1389 pow10l NEW: GNU ext.
1392 printf_size NEW: GNU ext.
1393 printf_size_info NEW: GNU ext.
1394 profil_counter REMOVED
1395 pthread_mutexattr_getkind_np REPLACED
1396 pthread_mutexattr_setkind_np REPLACED
1397 ptsname NEW: Unix98 PTY
1398 ptsname_r NEW: Unix98 PTY
1400 putchar_locked REMOVED
1401 putgrent NEW: GNU ext.
1403 putpmsg NEW: STREAMS
1404 pututxline NEW: Unix98
1408 readdir64_r NEW: LFS
1409 remquo NEW: ISO C 9x
1410 remquof NEW: ISO C 9x
1411 remquol NEW: ISO C 9x
1413 roundf NEW: ISO C 9x
1414 roundl NEW: ISO C 9x
1416 scalbln NEW: ISO C 9x
1417 scalblnf NEW: ISO C 9x
1418 scalblnl NEW: ISO C 9x
1420 sendfile NEW: kernel
1421 setcontext NEW: Unix98
1422 setrlimit64 NEW: LFS
1423 setutxent NEW: Unix98
1425 sigignore NEW: Unix98
1426 sigqueue NEW: POSIX.1b
1427 sigrelse NEW: Unix98
1428 sigset NEW: POSIX.1b
1429 sigtimedwait NEW: POSIX.1b
1430 sigwaitinfo NEW: POSIX.1b
1431 sincos NEW: GNU ext.
1432 sincosf NEW: GNU ext.
1433 sincosl NEW: GNU ext.
1437 strcasestr NEW: GNU ext.
1438 strtoimax NEW: ISO C 9x
1439 strtoumax NEW: ISO C 9x
1440 strverscmp NEW: GNU ext.
1441 svcauthdes_stats NEW: Secure RPC
1442 svcunix_create NEW: sunrpc etx
1443 svcunixfd_create NEW: sunrpc ext
1444 swapcontext NEW: Unix98
1445 tcgetsid NEW: Unix98 PTY
1446 tdestroy NEW: GNU ext.
1447 tgamma NEW: ISO C 9x
1448 tgammaf NEW: ISO C 9x
1449 tgammal NEW: ISO C 9x
1453 truncf NEW: ISO C 9x
1454 truncl NEW: ISO C 9x
1456 unlockpt NEW: Unix98 PTY
1457 updwtmpx NEW: Unix98
1458 user2netname NEW: Secure RPC
1459 utmpxname NEW: Unix98
1460 versionsort NEW: GNU ext.
1461 versionsort64 NEW: GNU ext.
1463 wcscasecmp NEW: GNU ext.
1464 wcsncasecmp NEW: GNU ext.
1465 wcsnlen NEW: GNU ext.
1466 wcstoimax NEW: ISO C 9x
1467 wcstoll NEW: ISO C 9x
1468 wcstoull NEW: ISO C 9x
1469 wcstoumax NEW: ISO C 9x
1471 wordexp NEW: POSIX.2
1472 wordfree NEW: POSIX.2
1473 write_profiling REMOVED
1474 xdecrypt NEW: Secure RPC
1475 xdr_authdes_cred NEW: Secure RPC
1476 xdr_authdes_verf NEW: Secure RPC
1477 xdr_cryptkeyarg NEW: Secure RPC
1478 xdr_cryptkeyarg2 NEW: Secure RPC
1479 xdr_cryptkeyres NEW: Secure RPC
1480 xdr_getcredres NEW: Secure RPC
1481 xdr_key_netstarg NEW: Secure RPC
1482 xdr_key_netstres NEW: Secure RPC
1483 xdr_keybuf NEW: Secure RPC
1484 xdr_keystatus NEW: Secure RPC
1485 xdr_netnamestr NEW: Secure RPC
1486 xdr_sizeof NEW: Secure RPC
1487 xdr_unixcred NEW: sunrpc ext
1488 xencrypt NEW: Secure RPC
1489 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1500 * inet_ntoa is thread-safe
1502 * updwtmp is moved from libutil to libc
1504 * rewrite of cbrt function
1506 * update of timezone data
1520 * add atoll function
1522 * fix complex problems in Berkeley DB code
1524 * fix math functions
1528 * fixed lots of header problems (especially Linux/GNU specific)
1530 * dynamic loader preserves all registers
1532 * Roland McGrath provided support for handling of auxiliary objects in
1533 the ELF dynamic loader.
1535 * support for parallel builds is improved
1539 * GNU extensions are no longer declared by default. To enable them you
1540 must define the macro `_GNU_SOURCE' in your program or compile with
1543 * The library has changed from using GNU ld symbol aliases to using weak
1544 symbols where available. The ELF object file format supports weak
1545 symbols; GNU ld also supports weak symbols in the a.out format. (There
1546 is also now support for other GNU ld extensions in ELF. Use the
1547 `--with-elf' option to configure to indicate you have ELF, and
1548 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1549 of many files which contained only symbol aliases, reducing the size of
1550 the source and the compiled library; many other files were renamed to
1551 less cryptic names previously occupied by the symbol alias files.
1552 There is a new header file <elf.h> for programs which operate on
1553 files in the ELF format.
1555 * Converted to Autoconf version 2, so `configure' has more options.
1556 Run `configure --help' to see the details.
1558 * The library can now be configured to build profiling, highly-optimized
1559 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1560 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1561 `configure' enable building these extra libraries. The shared library is
1562 built by default when using both ELF and GNU ld. When shared libraries
1563 are enabled, the new library `-ldl' is available for arbitrary run-time
1564 loading of shared objects; its interface is defined in <dlfcn.h>. The
1565 new header file <link.h> gives access to the internals of the run-time
1566 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1567 application of same name on other systems and it provides information
1568 about dynamically linked binaries.
1570 * The C library now provides the run-time support code for profiling
1571 executables compiled with `-pg'. Programs can control the profiling code
1572 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1573 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1574 the support for this file format was contributed by David Mosberger-Tang.
1576 * The math code has been replaced with a math library based on fdlibm from
1577 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1578 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1579 functions. The math functions now reside in a separate library, so
1580 programs using them will need to use `-lm' their linking commands.
1582 * John C. Bowman contributed optimized ix87 assembler inline functions.
1584 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1585 mechanism similar to that found in Solaris 2. This is now used for the
1586 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1587 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1588 file controls what services are used for each individual database. This
1589 works by loading shared libraries with names specified in `nsswitch.conf',
1590 so service modules can be changed or added at any time without even
1591 relinking any program. Currently there are the file, db, and NIS based
1592 NSS services available.
1594 * The new functions `strtoq' and `strtouq' parse integer values from
1595 strings, like `strtol' and `strtoul', but they return `long long int' and
1596 `unsigned long long int' values, respectively (64-bit quantities).
1598 * The new functions `strtof' and `strtold' parse floating-point values from
1599 strings, like `strtod', but they return `float' and `long double' values,
1600 respectively (on some machines `double' and `long double' are the same).
1602 * Ulrich Drepper has contributed new implementations of the floating-point
1603 printing and reading code used in the `printf' family of functions and
1604 `strtod', `strtof', and `strtold'. These new functions are perfectly
1605 accurate, and much faster than the old ones.
1607 * The implementation of the POSIX locale model was completely rewritten by
1608 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1609 to compile the POSIX locale definition.
1611 * The former dummy implementations of the strcoll and strxfrm function are
1612 now replaced by fully functional code contributed by Ulrich Drepper. The
1613 collation information comes from the POSIX locale definitions.
1615 * The new header <langinfo.h> defines an interface for accessing
1616 various locale-dependent data (using the locale chosen with `setlocale').
1618 * Ulrich Drepper has contributed a new suite of functions for operation on
1619 wide-character and multibyte-character strings, in <wchar.h>;
1620 and classification and case conversion of wide characters, in <wctype.h>.
1621 These new functions are conforming to the ISO C, Amendement 1 specification.
1623 * There is now a second implementation of the standard I/O library available.
1624 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1625 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1627 * You can now use positional parameter specifications in format strings
1628 for the `printf' and `scanf' families of functions. For example,
1629 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1630 ``Number 6, Mr Jones''. This is mainly useful when providing different
1631 format strings for different languages, whose grammars may dictate
1632 different orderings of the values being printed. To support this
1633 feature, the interface for `register_printf_handler' has changed; see
1634 the header file <printf.h> for details.
1636 * The `printf' and `scanf' families of functions now understand a new
1637 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1638 to group numbers as indicated by the locale; for `scanf' and friends, this
1639 says to accept as valid only a number with all the proper grouping
1640 separators in the right places. In the default "C" locale, numbers are
1641 not grouped; but locales for specific countries will define the usual
1642 conventions (i.e. separate thousands with `,' in the US locale).
1644 * The pgrp functions have been regularized, slightly incompatibly but much
1645 less confusingly. The core functions are now `getpgid' and `setpgid',
1646 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1647 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1648 provided for compatibility. There is no longer an incompatible `getpgrp'
1649 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1651 * The new header file <fts.h> and suite of functions simplify programs that
1652 operate on directory trees. This code comes from 4.4 BSD.
1654 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1655 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1656 NSS scheme used in glibc.
1658 * There is a new malloc debugging hook `__memalign_hook'.
1660 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1661 `unsigned int' in <sys/types.h>. These are for compatibility only and
1662 their use is discouraged.
1664 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1665 done differently, so that it works even without GNU ld.
1667 * New function `euidaccess' checks allowed access to a file like `access',
1668 but using the effective IDs instead of the real IDs.
1670 * The time zone data files have been updated for the latest and greatest
1671 local time conventions of the countries of the world.
1673 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1676 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1677 for formatting floating-point numbers. They are provided only for
1678 compatibility; new programs should use `sprintf' instead. There are
1679 also equivalent function for the `long double' floating-point type and
1680 all functions also exist in a reentrant form.
1682 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1683 functions for maintaining the login-record files (primarily of use to
1684 system programs such as `login'), and convenient functions for
1685 allocating and initializing a pseudo-terminal (pty) device.
1687 * Ulrich Drepper has contributed new support for System V style
1688 shared memory and IPC on systems that support it.
1690 * Ulrich Drepper has contributed several miscellaneous new functions found
1691 in System V: The `hsearch' family of functions provide an effective
1692 implementation of hash tables; `a64l' and `l64a' provide a very simple
1693 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1696 * Ulrich Drepper has contributed new reentrant counterparts for the
1697 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1699 * Ulrich Drepper has contributed new, highly-optimized versions of several
1700 string functions for the i486/Pentium family of processors.
1702 * Ulrich Drepper has updated the Linux-specific code, based largely
1703 on work done in Hongjiu Lu's version of GNU libc for Linux.
1704 The GNU library now supports Linux versions 2.0.10 and later,
1705 using the ELF object file format (i[3456]86-*-linux).
1707 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1709 * David Mosberger-Tang and Richard Henderson have ported the C library
1710 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1711 dynamic linking support for ELF/Alpha.
1713 * Richard Henderson contributed several Alpha optimized assembler function
1714 for arithmetic and string handling.
1716 * Ulrich Drepper has contributed a new set of message catalog functions to
1717 support multiple languages using the <libintl.h> interface, for use with
1718 his new package GNU gettext. Translation volunteers have contributed
1719 catalogs of the library's messages in Spanish, German, and Korean.
1721 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1722 program and the `catgets' function for reading the catalog files it
1723 creates. (The <libintl.h> interface is preferred; we include the
1724 <nl_types.h> interface using `catgets' only for source compatibility with
1725 programs already written to use it.)
1727 * New header file <values.h> gives SVID-compatible names for <limits.h>
1730 * Various new macros, declarations, and small header files for compatibility
1733 * New function `group_member' is a convenient way to check if a process has
1734 a given effective group ID.
1736 * When using GCC 2.7 and later, the socket functions are now declared in a
1737 special way so that passing an argument of type `struct sockaddr_in *',
1738 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1739 `struct sockaddr *' type, does not generate a type-clash warning.
1741 * New function `error' declared in header file <error.h> is a convenient
1742 function for printing error messages and optionally exiting; this is the
1743 canonical function used in GNU programs. The new functions `err', `warn',
1744 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1745 doing the same thing.
1747 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1748 POSIX.2 `glob' function to do ~ and {...} expansion.
1750 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1751 `clearenv' which is used in POSIX.9 is also available.
1753 * New function `getsid' returns session ID number on systems that support it.
1755 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1756 files <db.h> and <mpool.h> provide a rich set of functions for several
1757 types of simple databases stored in memory and in files, and <ndbm.h> is
1758 an old `ndbm'-compatible interface using the `db' functions. Link with
1759 `-ldb' to get these functions.
1761 * New macro `strdupa' copies a string like `strdup', but uses local stack
1762 space from `alloca' instead of dynamic heap space from `malloc'.
1764 * New function `strnlen' is like `strlen' but searches only a given maximum
1765 number of characters for the null terminator. `stpncpy', `strndup' and
1766 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1769 * New function `statfs' in header <sys/statfs.h>.
1771 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1772 provide convenient functions for operating on blocks of null-terminated
1775 * A new suite of functions in <utmp.h> handle all the details of reading
1776 and writing the utmp file.
1778 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1781 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1782 completely POSIX compliant and also implemented the extended functionality
1783 to handle alternate digit representation and alternate era date formats.
1785 * Ulrich Drepper provided an implementation of the `strptime' function
1786 defined in XPG4.2 which transforms a string into a `struct tm' value.
1788 * Paul Eggert provided the tzselect shell script as part of the timezone
1789 code. The shell script makes it easy to select the correct timezone
1792 * The implementation of the malloc family of functions is completely replaced
1793 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1794 The implementation uses the mmap function (if available) and it is
1795 optimized for the use in multi threaded programs.
1797 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1798 functions. This new functionality is usable by specifying a special
1799 salt string and it is compatible with implementation on *BSD systems.
1801 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1802 `getsubopt' to handle second level command line options, `bsd_signal'
1803 to access BSD style `signal' functionality, the obsolete `regexp' style
1806 * the `lchown' function is available on system which support this
1809 * The implementation of the shadow password handling function was contributed
1812 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1814 * POSIX.1g support was added. The <sys/select.h> header is available,
1815 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1816 implementation of `getaddrinfo'.
1820 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1822 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1823 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1825 * The new function `daemon' from 4.4 BSD is useful for server programs that
1826 want to put themselves in the background.
1828 * Joel Sherrill has contributed support for several standalone boards that
1829 run without an operating system.
1831 * `printf', `scanf' and friends now accept a `q' type modifier for long
1832 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1834 * All of the code taken from BSD (notably most of the math and networking
1835 routines) has been updated from the BSD 4.4-Lite release.
1837 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1839 * The new functions `getdomainname' and `setdomainname' fetch or change the
1840 YP/NIS domain name. These are system calls which exist on systems which
1843 * The time zone data files have been updated for the latest international
1846 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1847 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1851 * The C library now includes support for Sun RPC, from Sun's free
1852 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1853 are included. (There is still no support for YP.)
1855 * Tom Quinn has contributed a port of the C library to SGI machines running
1856 Irix 4 (mips-sgi-irix4).
1858 * The new `lockf' function is a simplified interface to the locking
1859 facilities of `fcntl', included for compatibility.
1861 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1863 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1865 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1868 * The error message printed by `assert' for a failed assertion now includes
1869 the name of the program (if using GNU ld) and the name of the calling
1870 function (with versions of GCC that support this).
1872 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1874 * The library now includes the <sys/mman.h> header file and memory
1875 management functions `mmap', `munmap', `mprotect', `msync', and
1876 `madvise', on systems that support those facilities.
1878 * The interface for `mcheck' has changed slightly: the function called to
1879 abort the program when an allocation inconsistency is detected now takes
1880 an argument that indicates the type of failure. The new function
1881 `mprobe' lets you request a consistency check for a particular block at
1882 any time (checks are normally done only when you call `free' or `realloc'
1885 * It is now possible to easily cross-compile the C library, building on one
1886 system a library to run on another machine and/or operating system. All
1887 you need to do is set the variable `HOST_CC' in `configparms' to the
1888 native compiler for programs to run on the machine you are building on (a
1889 few generator programs are used on Unix systems); set `CC' to the
1892 * The new function `fexecve' (only implemented on the GNU system) executes
1893 a program file given a file descriptor already open on the file.
1897 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1898 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1900 * You can set the variable `libprefix' in `configparms' to specify a prefix
1901 to be prepended to installed library files; this makes it easy to install
1902 the GNU C library to be linked as `-lgnuc' or whatever.
1904 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1905 copies a limited number of characters from a string, and returns the
1906 address of the last character written.
1908 * You no longer need to check for whether the installed `stddef.h' is
1909 compatible with the GNU C library. configure now checks for you.
1911 * You can now define a per-stream `fileno' function to convert the
1912 stream's cookie into an integral file descriptor.
1914 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1915 allocates zero bytes of storage, and returns a unique pointer which
1916 you can pass to `realloc' or `free'. The behavior is undefined if
1917 you dereference this pointer.
1919 * The C library now runs on Sony NEWS m68k machines running either
1920 NewsOS 3 or NewsOS 4.
1922 * The new `syscall' function is a system-dependent primitive function
1923 for invoking system calls. It has the canonical behavior on Unix
1924 systems, including unreliable return values for some calls (such as
1925 `pipe', `fork' and `getppid').
1927 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1928 to `EAGAIN', which is the preferred name. On systems whose kernels
1929 use two distinct codes, the C library now translates EWOULDBLOCK to
1930 EAGAIN in every system call function.
1934 * The GNU C Library Reference Manual is now distributed with the library.
1935 `make dvi' will produce a DVI file of the printed manual.
1936 `make info' will produce Info files that you can read on line using C-h i
1937 in Emacs or the `info' program.
1938 Please send comments on the manual to bug-glibc-manual@gnu.org.
1940 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1942 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1944 * Jason Merrill has contributed a port to the Sequent Symmetry running
1945 Dynix version 3 (i386-sequent-dynix).
1947 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1948 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1950 * New function `memory_warnings' lets you arrange to get warnings when
1951 malloc is running out of memory to allocate, like Emacs gives you.
1953 * The C library now contains the relocating allocator used in Emacs 19 for
1954 its editing buffers. This allocator (ralloc) minimizes allocation
1955 overhead and fragmentation by moving allocated regions around whenever it
1956 needs to. You always refer to a ralloc'd region with a "handle" (a
1957 pointer to a pointer--an object of type `void **').
1959 * There is a new `printf' format: `%m' gives you the string corresponding
1960 to the error code in `errno'.
1962 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1963 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1964 pass, the `a' modifier says to fill in a `char **' you pass with a
1967 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1968 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1969 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1971 * `mkstemp' is a traditional Unix function to atomically create and open a
1972 uniquely-named temporary file.
1976 * The standard location for the file that says what the local timezone is
1977 has changed again. It is now `/usr/local/etc/localtime' (or more
1978 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1980 * The distribution no longer contains any files with names longer than 14
1983 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1984 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1986 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1990 * The configuration process has changed quite a bit. The `configure'
1991 script is now used just like the configuration scripts for other GNU
1992 packages. The `sysdeps' directory hierarchy is much rearranged.
1993 The file `INSTALL' explains the new scheme in detail.
1995 * The header files no longer need to be processed into ANSI C and
1996 traditional C versions. There is just one set of files to install, and
1997 it will work with ANSI or old C compilers (including `gcc -traditional').
1999 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2000 MIPS DECStation running Ultrix 4.
2002 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2003 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2004 made itself into a shared library.
2006 * Yet further improved support for the i386, running 4.3 BSD-like systems
2007 (such as Mach 3 with the Unix single-server), or System V.
2009 * New function `strncasecmp' to do case-insensitive string comparison
2010 with limited length.
2012 * New function `strsep' is a reentrant alternative to `strtok'.
2014 * New functions `scandir' and `alphasort' for searching directories.
2016 * New function `setenv' is a better interface to `putenv'.
2018 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2019 function for traversing a directory tree.
2021 * The GNU obstack package is now also part of the C library.
2022 The new function `open_obstack_stream' creates a stdio stream that
2023 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2024 formatted output directly to an obstack.
2026 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2027 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2029 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2031 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2032 things to your strings.
2034 * There are some new test programs: test-fseek, testmb, and testrand.
2036 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2037 These ports are not finished, but are a good starting place for really
2038 supporting those systems.
2040 * `/etc/localtime' is now the standard location for the file that says what
2041 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2042 This follows the general principle that `/etc' is the place for all local
2043 configuration files.
2045 * The C library header files now use `extern "C"' when used by the C++
2046 compiler, so the C library should now work with C++ code.
2048 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2049 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2052 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2053 function which uses the `merge sort' algorithm, and is said to be
2054 significantly faster than the old GNU `qsort' function. Merge sort is
2055 now the standard `qsort' function. The new algorithm can require a lot
2056 of temporary storage; so, the old sorting function is called when the
2057 required storage is not available.
2059 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2060 provides the Unix `crypt' function, plus some other entry points.
2062 * The code and header files taken from 4.4 BSD have been updated with the
2063 latest files released from Berkeley.
2065 ----------------------------------------------------------------------
2066 Copyright information:
2068 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2070 Permission is granted to anyone to make or distribute verbatim copies
2071 of this document as received, in any medium, provided that the
2072 copyright notice and this permission notice are preserved,
2073 thus giving the recipient permission to redistribute in turn.
2075 Permission is granted to distribute modified versions
2076 of this document, or of portions of it,
2077 under the above conditions, provided also that they
2078 carry prominent notices stating who last changed them.
2081 version-control: never
projects / platform / upstream / glibc.git / blob