1 GNU C Library NEWS -- history of user-visible changes. 2012-1-7
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 13526, 13527, 13528, 13529, 13531, 13532, 13533, 13547, 13551, 13552,
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 Implemented by Ulrich Drepper.
34 * Support for the IA-64 is removed and could live in ports.
36 * Remove support for anything but ELF binary format
40 * The following bugs are resolved with this release:
42 6779, 6783, 9696, 10103, 10709, 11589, 12403, 12786, 12840, 12847, 12868,
43 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962, 13007,
44 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092, 13096,
45 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179, 13185,
46 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335, 13337,
47 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472, 13484,
48 13506, 13515, 13523, 13524, 13538, 13540
50 * New program pldd to list loaded object of a process
51 Implemented by Ulrich Drepper.
53 * Add nss_db support back to glibc. No more dependency on Berkeley db
54 and support for initgroups lookups.
55 Implemented by Ulrich Drepper.
57 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
60 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
63 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
65 Contributed by Liubov Dmitrieva.
67 * Optimized strchr and strrchr for SSE on x86-32.
68 Contributed by Liubov Dmitrieva.
70 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
71 for x86-64 and x86-32.
72 Contributed by Liubov Dmitrieva.
74 * New interfaces: scandirat, scandirat64
75 Implemented by Ulrich Drepper.
77 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
78 Implemented by Ulrich Drepper.
80 * nscd now also caches the netgroup database.
81 Implemented by Ulrich Drepper.
83 * Integrate libm with gcc's -ffinite-math-only option.
84 Implemented by Ulrich Drepper.
86 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
87 to math functions. Implemented by Ulrich Drepper.
89 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
90 Implemented by Ulrich Drepper.
92 * New Linux interfaces: process_vm_readv, process_vm_writev
94 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
95 Implemented by Ulrich Drepper.
97 * Optimized nearbyint and strcasecmp for PPC.
98 Implemented by Adhemerval Zanella.
100 * New locales: bho_IN, unm_US, es_CU, ta_LK
104 * The following bugs are resolved with this release:
106 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
107 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
108 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
109 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
110 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
111 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
112 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
113 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
114 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
115 12795, 12811, 12813, 12814, 12841
117 * The RPC implementation in libc is obsoleted. Old programs keep working
118 but new programs cannot be linked with the routines in libc anymore.
119 Programs in need of RPC functionality must be linked against TI-RPC.
120 The TI-RPC implementation is IPv6 enabled and there are other benefits.
122 Visible changes of this change include (obviously) the inability to link
123 programs using RPC functions without referencing the TI-RPC library and the
124 removal of the RPC headers from the glibc headers.
125 Implemented by Ulrich Drepper.
127 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
128 syncfs, setns, sendmmsg
130 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
131 yue_HK, lij_IT, mhr_RU
133 * New encodings: CP770, CP771, CP772, CP773, CP774
135 * New program sotruss to trace calls through PLTs
136 Implemented by Ulrich Drepper.
138 * The malloc hook implementation is marked deprecated and will be removed
139 from the default implementation in the next version. The design never
140 worked ever since the introduction of threads. Even programs which do
141 not create threads themselves can use multiple threads created internally.
145 * The following bugs are resolved with this release:
147 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
148 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
149 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
150 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
153 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
155 * POWER7 optimizations: memset, memcmp, strncmp
157 * New optimized string functions for x86-64: strnlen (SSE2),
158 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
159 Implemented by Ulrich Drepper.
163 * The following bugs are resolved with this release:
165 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
166 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
167 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
168 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
169 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
170 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
171 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
172 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
174 * New interfaces: pthread_getname_np, pthread_setname_np
176 * New Linux interface: recvmmsg
178 * STT_GNU_IFUNC implemented for Sparc by David Miller.
180 * The dynamic linker now recognizes supported ABI versions from the
181 EI_ABIVERSION field in the ELF header.
182 Implemented by Ulrich Drepper.
184 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
185 will not be used to fill in password fields in the passwd.byname replies.
186 Instead it is used to synthesize the shadow.byname table, should it be
187 missing. This is a useful mode in some installations involving Solaris.
188 Implemented by Ulrich Drepper.
190 * New locales: kok_IN, sq_MK, cv_RU
194 * The following bugs are resolved with this release:
196 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
197 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
198 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
199 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
200 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
201 10789, 10817, 10823, 10840, 10847
203 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
205 Implemented by Ulrich Drepper.
207 * Checking version of longjmp added that fails if an uninitialized stack
208 frame would be created. Implemented by Ulrich Drepper.
210 * STT_GNU_IFUNC is now supported in static executables.
211 Implemented by H.J. Lu.
213 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
215 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
216 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
217 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
218 Contributed by H.J. Lu.
220 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
221 Implemented by Ulrich Drepper.
223 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
225 Contributed by H.J. Lu.
227 * Support for fma instruction in AVX on x86-64.
228 Implemented by H.J. Lu and Ulrich Drepper.
230 * AVX support in x86-64 auditing support in ld.so.
231 Implemented by H.J. Lu.
233 * STB_GNU_UNIQUE support added.
234 Implemented by Ulrich Drepper.
236 * Implement second fallback mode for optimized DNS lookup for even more
237 broken environments. If two requests from the same port are not
238 handled correctly close the socket and open a new one before sending
239 the second request. The 'single-request-reopen' option in /etc/resolv.conf
240 can be used to select this mode right away, instead of rediscovering the
241 necessity is every process again.
242 Implemented by Ulrich Drepper.
244 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
245 Implemented by Adam Tkac.
247 * Optimized iconv conversions for S390x.
248 Implemented by Andreas Krebbel.
250 * Using condvars with PI mutexes is now more efficient due to kernel
251 support for requeueing to PI futexes. NPTL support added for x86-64.
252 Implemented by Ulrich Drepper.
254 * New locales: ps_AF, my_MM
258 * The following bugs are resolved with this release:
260 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
261 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
262 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
263 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
264 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
266 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
267 Implemented by Ulrich Drepper.
269 * New Linux interfaces: accept4, fallocate, fallocate64.
270 Implemented by Ulrich Drepper.
272 * Correct declarations of string function when used in C++ code. This
273 could lead to compile errors for invalid C++ code.
275 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
278 * New POSIX 2008 interface: psiginfo
279 Implemented by Ulrich Drepper.
281 * New ISO C++1x interfaces: quick_exit, at_quick_exit
282 Implemented by Ulrich Drepper.
284 * Support for selecting between multiple function definitions at runtime
285 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
287 * The libcrypt library can now use the hash function implementations in
288 NSS. Implemented by Ulrich Drepper.
290 * The malloc implementation can be compiled to be less memory efficient
291 but higher performing in multi-threaded programs.
292 Implemented by Ulrich Drepper.
294 * New locales: nan_TW@latin, ks_IN
296 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
297 Implemented by Ulrich Drepper.
299 * Extended printf hook support. It is possible to use user-defined types
300 and extend existing format specifiers.
301 Implemented by Ulrich Drepper.
303 * Handling for group shadow files has been added.
304 Implemented by Ulrich Drepper.
306 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
307 servers (the case, e.g., for some people using the built-in DNS
308 server in ADSL modems/routers). There is a once-per-process timeout
309 in case of a broken server. To avoid it, users can run nscd or put
310 'options single-request' in /etc/resolv.conf.
311 Implemented by Ulrich Drepper.
315 * The following bugs are resolved with this release:
317 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
318 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
319 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
320 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
321 6968, 6974, 6980, 6995, 7008, 7009, 7029
323 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
324 up at the same time. Implemented by Ulrich Drepper.
326 * TLS descriptors for LD and GD on x86 and x86-64.
327 Implemented by Alexandre Oliva.
329 * getaddrinfo now handles DCCP and UDPlite.
330 Implemented by Ulrich Drepper.
332 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
333 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
334 Implemented by Ulrich Drepper.
336 * New implementation of memmem, strstr, and strcasestr which is O(n).
337 Implemented by Eric Blake.
339 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
341 * Implement "e" option for popen to open file descriptor with the
342 close-on-exec flag set. Implemented by Ulrich Drepper.
344 * Implement "b" mode for fmemopen. In this mode writes writes don't
345 implicitly add a NUL byte and seeks from the end of the buffer really
346 use the buffer end, not the string length as the basis.
347 Implemented by Ulrich Drepper.
349 * Many functions, exported and internal, now atomically set the close-on-exec
350 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
352 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
354 Implemented by Pravin Satpute.
356 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
360 * The following bugs are resolved with this release:
362 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
363 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
364 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
365 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
366 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
367 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
368 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
370 * New locales: bo_CN, bo_IN, shs_CA.
372 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
374 * Sorting rules for some Indian languages (Devanagari and Gujarati).
375 Implemented by Pravin Satpute.
377 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
379 * nscd caches now all timeouts for DNS entries
380 Implemented by Ulrich Drepper.
382 * nscd is more efficient and wakes up less often.
383 Implemented by Ulrich Drepper.
385 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
386 vdprintf, and obstack_vprintf.
387 Implemented by Jakub Jelinek.
389 * Faster memset for x86-64.
390 Implemented by Harsha Jagasia and H.J. Lu.
392 * Faster memcpy on x86.
393 Implemented by Ulrich Drepper.
395 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
396 Implemented by Ulrich Drepper.
398 * Faster sqrt and sqrtf implemention for some PPC variants.
399 Implemented by Stephen Munroe.
403 * The following bugs are resolved with this release:
405 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
406 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
407 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
408 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
409 5071, 5103, 5104, 5112, 5113, 5184, 5186
411 * More checking functions: fread, fread_unlocked, open*, mq_open.
412 Implemented by Jakub Jelinek and Ulrich Drepper.
414 * Extend fortification to C++. Implemented by Jakub Jelinek.
416 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
417 by not recognizing 'a' as a modifier when those specs are requested.
418 Implemented by Jakub Jelinek.
420 * PPC optimizations to math and string functions.
421 Implemented by Steven Munroe.
423 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
424 options to be passed. Implemented by Ulrich Drepper.
426 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
428 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
429 Implemented by Ulrich Drepper.
431 * Handle private futexes in the NPTL implementation.
432 Implemented by Jakub Jelinek and Ulrich Drepper.
434 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
435 Implemented by Roland McGrath and Ulrich Drepper.
437 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
439 * SHA-256 and SHA-512 based password encryption.
440 Implemented by Ulrich Drepper.
442 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
443 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
446 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
447 Implemented by Ulrich Drepper.
451 * The following bugs are resolved with this release:
453 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
454 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
455 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
456 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
457 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
458 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
459 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
462 * New Linux interfaces: epoll_pwait, sched_getcpu.
464 * New generic interfaces: strerror_l.
466 * nscd can now cache the services database. Implemented by Ulrich Drepper.
470 * The following bugs are resolved with this release:
472 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
473 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
474 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
475 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
476 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
477 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
478 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
479 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
480 3225, 3251, 3252, 3253, 3273
482 * For Linux, the sorting of addresses returned by getaddrinfo now also
483 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
484 Implemented by Ulrich Drepper.
486 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
487 Implemented by Ulrich Drepper.
489 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
491 * New iconv module for MIK. Contributed by Alexander Shopov.
493 * For sites with broken group and/or passwd database, the auto-propagate
494 option of nscd can prevent creating ID lookup entries from the results
495 of a name lookup and vice versa. This usually is no problem but some
496 site might have problems with the default behavior.
497 Implemented by Ulrich Drepper.
499 * Iterating over entire database in NIS can be slow. With the
500 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
501 to trade time for memory. The entire database will be read at once.
502 Implemented by Ulrich Drepper.
504 * The interfaces introduced in RFC 3542 have been implemented by
507 * Support for the new ELF hash table format was added by Ulrich Drepper.
509 * Support for priority inheritance mutexes added by Jakub Jelinek and
512 * Support for priority protected mutexes added by Jakub Jelinek.
514 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
515 or_IN, csb_PL, fy_NL, sr_ME.
519 * More overflow detection functions.
521 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
522 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
524 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
525 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
526 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
527 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
528 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
529 by Masahide Washizawa.
531 * It is now possible to install audit libraries for the dynamic linker using
532 LD_AUDIT. Implemented by Ulrich Drepper.
534 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
535 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
536 For a libc and libpthread that works well on Linux 2.4 kernels, we
537 recommend using the stable 2.3 branch.
539 * The new function open_wmemstream acts like open_memstream,
540 but uses a wchar_t wide character buffer.
542 * The new function ppoll is an improved version of poll, similar to pselect.
544 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
545 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
546 renameat, unlinkat, linkat, symlinkat, readlinkat.
548 * New Linux kernel system calls: unshare,
549 inotify_init, inotify_add_watch, inotify_rm_watch.
551 * The euidaccess function is now also known by the alias eaccess,
552 for compatibility with some other systems.
554 * Timezone data updated to 2006b version.
558 * The following bugs are resolved with this release:
560 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
561 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
562 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
563 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
564 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
565 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
567 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
569 * As of this release, GCC 4 can be used to compile the C Library.
571 * Timezone data updated to 2005m version.
575 * The following bugs are resolved with this release:
577 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
578 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
579 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
580 777, 787, 821, 822, 823, 825
582 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
586 * Support for RFC 3678. Real implementations exist only for Linux so far.
587 Implemented by Ulrich Drepper.
589 * nscd can now cache entries persistently. Expiring entries are reloaded.
590 For speedups the cache can be shared in memory with client processes.
591 Implemented by Ulrich Drepper.
593 * nscd can now perform SELinux checks.
594 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
596 * getaddrinfo queries are now cached. Canonical name lookup is performed
598 Implemented by Ulrich Drepper.
600 * The nothrow function attribute is used when headers are used by gcc when
601 compiling C code. This can avoid significant amounts of exception
604 * The malloc functions perform more error checking and are stricter when
605 it comes to reacting on errors. The default action is to terminate
606 the process after showing an error message. Implemented by Ulrich Drepper.
608 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
609 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
611 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
612 namespaces using the new function dlmopen(). This feature is of course,
613 like most other dynamic loading functionality, not available in statically
614 linked applications. Implemented by Ulrich Drepper.
616 * Low-overhead boundary checking variants of string and some stdio functions
617 were added. These are to be used in conjunction with a gcc patch by
618 Jakub Jelinek which adds calls to these functions if possible.
619 Implemented by Jakub Jelinek and Ulrich Drepper.
621 * Old code for several operating systems and machine architectures that
622 have not been in working condition in a long time have been removed from
623 the main source tree maintained by the GNU C Library's maintainers.
624 These files are now reside in the separate `ports' source module
625 that is usable as an add-on when building the library.
629 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
630 interrogate the dynamic linker, compatible with the Solaris interface.
632 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
633 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
635 * getifaddrs now uses the netlink interface on Linux to get its information.
636 Implemented by Thorsten Kukuk.
638 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
639 Implemented by Ulrich Drepper.
641 * support for non-executable stacks on x86 has been added. Changes mostly
644 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
647 * getaddrinfo now performs destination address selection according to
652 * Thread-safe interfaces for many functions that access locale data
653 were added in version 2.3, but these features were omitted from NEWS.
654 Many functions have variants with an `_l' suffix that take a `locale_t'
655 object as a parameter rather than consulting the current locale.
656 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
657 create and maintain `locale_t' objects. Additionally, the new function
658 `uselocale' sets "the current locale" (as used by functions not so
659 parameterized) set for an individual thread. These features were added
660 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
662 * The functions getresuid, getresgid, setresuid, and setresgid, which
663 have long been available on Linux, are now declared in <unistd.h>
664 and are now also available on the Hurd.
666 * ELF thread-local storage support (TLS) now works on x86-64.
668 * The new dynamic string token $LIB is expanded in shared library names.
669 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
671 * Aldy Hernandez contributed complete software floating point support for
672 PowerPC machines with no FPU.
674 * fexecve is implemented on Linux.
676 * The `btowc' function should work at least twice as fast due to
677 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
679 * With approriate thread add-ons cancelable functions are now implemented
680 in libc.so as well. No need to call the function in libpthread. This
681 change allowed to finally disable the incorrect and expensive handling
682 of weak definition in ld.so.
684 * Yet more PLT entries in libc.so have been removed. We finally arrived
685 at the bare minimum. Startup times improved appropriately.
687 * Support for the new Linux/x86 system call interface was added. The
688 AT_SYSINFO auxiliary vector entry is recognized and handled.
692 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
695 * iconv (the program and the interface) now accepts empty names (excluding
696 options like //TRANSLIT) to mean "use charset of current locale".
698 * localedef can now transliterate characters in strings which are not in
699 the provided charmap. The information from the input locale is used.
701 * Prelinking support was added for ELF targets. This requires additional
702 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
704 * Read-only stdio streams now use mmap to speed up operation by eliminating
705 copying and buffer underflows. To use add 'm' to the mode string of
706 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
708 * The malloc functions were completely rewritten by Wolfram Gloger based
709 on Doug Lea's malloc-2.7.0.c.
711 * Isamu Hasegawa contributed a completely new and POSIX-conformant
712 implementation of regex.
714 * Bruno Haible upgraded the iconv and locale implementation to support
717 * Contents of the LC_* and LANG environment variables in the CEN style are
718 not recognized anymore. It never was used. Change by Ulrich Drepper.
720 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
721 thread-local storage (TLS) ABI on some platforms.
722 Changes by Ulrich Drepper. SH support by Kaz Kojima.
724 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
725 EUC-JISX0213, and TSCII.
727 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
728 BSD-compatible interface for getting all network interface addresses.
729 Implementation for IPv4 by Roland McGrath.
731 * Loading of locale data is faster due to the introduction of a locale
732 archive. Implemented by Roland McGrath and Ulrich Drepper.
734 * Startup times are significantly reduced by not using exported functions
735 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
738 * Steven Munroe contributed a port to PowerPC64/Linux.
742 * The Hurd now uses the GNU libio implementation of stdio rather than the
743 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
745 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
746 with the same behavior as the Linux system call of the same name.
750 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
751 128-bit long double format.
753 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
754 IBM1161, and IBM1162 charsets.
756 * Andreas Jaeger contributed a port to x86-64/Linux.
758 * Peter Bruin contributed a port to PowerPC/Hurd.
760 * libc functions using I/O streams now can handle wide-oriented streams
763 * optimizations in the dynamic linker. Binaries created by recent binutils
764 versions start up quicker due to reduced time spent on relocations.
766 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
770 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
771 asinh, atanh, j0 for the 128-bit long double format.
773 * Bruno Haible updated all the code handling Unicode in some form to
776 * Speed of regex for single-byte locales is back to previous levels.
777 Patch by Isamu Hasegawa.
779 * Alpha, SPARC, and IA-64 now also using floating stacks.
781 * Startup time of internationalized applications greatly improved through
782 iconv cache. Use iconvconfig to generate the cache file.
783 Contributed by Ulrich Drepper.
785 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
786 severe performance problems. Patch by David Mosberger.
788 * The Hurd port got a lot more functionality like AIO, various stdio
789 extensions, etc. Mainly done by Roland McGrath.
791 * mtrace can now lookup symbols in shared libraries.
795 * Intel's IA-64 math library is largely integrated. It provides fast and
796 accurate implementatations for most basic and standard math functions
797 in float, double, and long double format.
799 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
800 and asin for the 96-bit long double format and asin, log, tan for the
801 128-bit long double format.
803 * The beginning of a last-bit accurate math library by IBM Haifa were added.
804 The basic double functions exist today. Contributed by Abraham Ziv
805 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
806 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
808 * An asynchronous name lookup library was added. The interface is designed
809 after POSIX AIO. The proposal was circulated beforehand to get comments.
810 No negative ones came in. Implemented by Ulrich Drepper.
812 * Port to S390/64bit contributed by Martin Schwidefsky
813 <schwidefsky@de.ibm.com>.
815 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
816 of functions for Linux/IA-64.
818 * The RPC code is now thread safe. Threads can now use the same service
819 of different services at the same time. Patch by Eric Norum
820 <eric.norum@usask.ca> with some help by Ulrich Drepper.
822 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
823 family of functions for Linux/S390.
825 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
826 of functions for Linux/x86.
828 * Port to Linux/CRIS contributed by Axis Communications.
832 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
833 we can now check for namespace violations and missing declarations. The
834 result is that almost all headers are now Unix-compliant (as defined in
835 the upcoming XPG6). The negative side is that some programs might need
836 corrections, too, if they depend on the incorrect form of the headers in
837 previous versions which defined too many symbols and included too many
840 * regex now handles multibyte character sets correctly.
841 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
843 * iconv (the program) does now conform to the upcoming XPG6 and handles
844 charmaps. Instead of the charset names the path of charmaps can be
845 provided and the conversion happens based on this data.
846 Contributed by Ulrich Drepper.
848 * The locale program now provides detailed information about the installed
853 only lists the names of the supported locales
857 provides details such as country, language, and codeset name.
858 Contributed by Ulrich Drepper.
862 * The gencat program now parses the input file according to the charset
863 selected by the LC_CTYPE category. This is important for stateful
864 character sets. To make generating catalogs easier there is a way
865 to overwrite the charset selected by the locale: before the first
866 message or $ quote line the catalog can contain a line like
870 to select the charset (ISO-8859-2 in this case).
872 Implemented by Shinya Hanataka and Ulrich Drepper.
874 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
875 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
876 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
878 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
879 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
881 * The LANGUAGE environment variable is now ignored unless the locale is
882 changed from the default "C" locale.
884 * The usual bug fixes.
888 * Greg McGary added runtime support for bounds checking using gcc's
889 new -fbounded-pointers option. ix86 target is complete. PowerPC
892 * Thorsten Kukuk added secure mode support to nscd.
894 * The Berkeley db libraries have been removed.
896 Related, the nss_db module is now in a separate package since it
897 obviously requires a database library being available.
899 * Wide character I/O streams implemented by Ulrich Drepper.
901 * Functions from the extended socket API added by Ulrich Drepper.
903 * Functions feenableexcept and fedisableexcept to control the
904 behaviour of individual exceptions have been added by Andreas Jaeger.
906 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
908 * The resolver code has been updated from bind 8.2.3-T5B which supports
909 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
912 This change could in some situations effect backward compatibility. Since
913 now `_res' is a thread-local instead of a global variable, modifying it
914 in one thread does not have any effect in other threads.
916 The resolver library was also extended to allow IPv6 as the transport
917 protocol for the requests. This work was done by Stig Venaas.
919 * Compatibility code for K&R C compilers has been removed from the
920 header files. A ISO C compiler is needed to use the library
921 (conforming to either C89 or C99 standard).
923 * Complete rewrite of the localedef program to support multibyte character
924 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
925 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
926 Implemented by Ulrich Drepper.
928 Bruno Haible significantly improved the generation and use of the data
929 structures for the wide character tables.
931 * Plural handling in gettext implemented by Ulrich Drepper.
933 * The utmp daemon has been removed.
935 * The port to MIPS-Linux has been finished by Andreas Jaeger.
937 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
940 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
942 * POSIX barriers implemented by Kaz Kylheku.
944 * POSIX spawn function family implemented by Ulrich Drepper.
946 * POSIX spinlocks are now available.
948 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
950 * the configure option --enable-kernel=X.Y.Z allows to strip out
951 compatibility for kernel versions before X.Y.Z. This is currently only
952 implemented for Linux.
954 * the sockaddr_in6 structure changed. The IPv6 working group added a new
955 field sin6_scope_id. This means that all programs using IPv6 should be
956 recompiled. Don't expect binary compatibility with previous glibc
959 * various conversion modules for IBM character sets contributed by
962 * IA-64 port by Jes Sorensen and HJ Lu.
964 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
965 Compiling the GNU C Library for Linux/ia64
966 ******************************************
968 Please refer to the file INSTALL in the same directory as you found
969 this file for general information about configuring and compiling
972 For general inquiries about glibc under Linux/ia64 please use the
973 following mailing list linux-ia64@linuxia64.org or one of the relevant
976 Recommended Tools for Compilation
977 =================================
979 In order for glibc-2.2 to build correctly on the ia64 you need at
980 least the following versions of the GNU tools (the :
982 * The Cygnus toolchain snapshot for the ia64 as of August 4
983 including the provided set of patches. It is however recommend
984 you use the October 24 toolchain snapshot or a more recent version.
986 OR alternatively you can try the following (the Cygnus toolchain is
987 the recommended solution):
989 * GCC and binutils, GAS and GNU LD out of CVS from
990 sources.redhat.com as of August 28, 2000 or later. The CVS tree
991 may require special patches to work properly on the ia64.
993 Configuring and compiling GNU Libc for Linux/ia64
994 =================================================
996 The library requires Linux kernel version 2.4.0-test4-000728 or
997 later to funtion properly. Besides that it support for debug libraries
998 is currently untested. Hence the following options
999 are required for configuring the library:
1001 --disable-debug --enable-kernel=2.4.0
1003 It is also important that you make sure the library picks up the
1004 appropriate kernel header files, if you do not have recent enough
1005 kernel headers in /usr/src/linux/include, you should use the
1006 --with-headers=<path> option to specify the location.
1008 As an example I personally use the following options to configure
1013 --enable-kernel=2.4.0
1015 --enable-add-ons=yes
1017 --with-headers=/home/jes/linux/include
1022 Jes Sorensen <jes@linuxcare.com>,
1024 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1038 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1040 * New xdr functions are added; some rpc functions are now 64bit clean.
1042 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1044 * Fixed known incompatibilities with glibc 2.0.
1046 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1048 * Optimized a number of functions (especially the ELF dynamic loader).
1050 * Update timezone data files.
1052 * lots of charmaps corrections
1054 * some new locale definitions and charmaps
1059 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1060 conform to POSIX member type requirements. Symbol versions have been
1061 adjusted as needed within the library, and for direct use by applications,
1062 but there is potential for problems if third-party libraries use
1063 struct timeval as part of their interface. This does not present
1064 a problem for X and other "essential" system libraries.
1066 * An additional locale model to support C++ Standard Library locale
1067 model and probably more was implemented by Ulrich Drepper.
1069 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1072 * Miles Bader provided the `argp' function family to support hierachical
1073 command line argument parsing, layered on top of getopt.
1075 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1077 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1080 * scanf recognizes the %a and %A format for scanning floating point numbers.
1082 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1083 information and interfaces for the available integer types.
1085 * about 130 new math functions were added to implement the ISO C9x math
1088 * the new header <complex.h> contains definitions of the complex math
1089 functions from ISO C 9X.
1091 * the new header <tgmath.h> defines generic macros to use complex or
1092 real valued functions.
1094 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1096 * Andreas Jaeger provided a test suite for the math library.
1098 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1100 * Ulrich Drepper added character set conversion functions (iconv).
1102 * Optimized string functions have been added.
1104 * The localedata addon is now part of glibc.
1106 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1108 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1109 daemon for NSS (nscd).
1111 Missing a better place here are some numbers on improvements. Under
1112 Linux 2.1.125 un-tar-ing the kernel sources takes
1116 using local files 12.19s 6.88s 22.91s
1118 using NIS 13.92s 8.91s 26.34s
1120 using NIS & nscd 10.37s 7.34s 25.30s
1122 using NIS+ 27.57s 30.37s 640.46s
1124 using NIS+ & nscd 10.25s 7.83s 26.51s
1126 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1128 Keep in mind that non-namelookup related operations dominate above times.
1129 It was just a common complain that using NIS+ unpacking the kernel is
1132 [1] The old nscd implementation is not available anymore since it was
1133 distributed with glibc up to version 2.0.98 and thus is now replaced.
1135 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1137 * Mark Kettenis provided a Hesiod NSS module.
1139 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1140 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1142 * rcmd can now handle netgroups (Dick Streefland).
1144 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1147 * Support for the IPv6 protocol has been added to the socket API, as per the
1148 latest draft standards.
1150 * Support for Linux 2.2 has been added.
1152 * Interface changes relative to the latest 2.0.x release:
1153 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1154 addseverity NEW: Unix98
1155 alphasort64 NEW: LFS
1156 argp_err_exit_status NEW: argp, GNU ext
1157 argp_error NEW: argp, GNU ext
1158 argp_failure NEW: argp, GNU ext
1159 argp_help NEW: argp, GNU ext
1160 argp_parse NEW: argp, GNU ext
1161 argp_program_bug_address NEW: argp, GNU ext
1162 argp_program_version NEW: argp, GNU ext
1163 argp_program_version_hook NEW: argp, GNU ext
1164 argp_state_help NEW: argp, GNU ext
1165 argp_usage NEW: argp, GNU ext
1166 authdes_create NEW: Secure RPC
1167 authdes_getucred NEW: Secure RPC
1168 authdes_pk_create NEW: Secure RPC
1169 backtrace NEW: GNU ext.
1170 backtrace_symbols NEW: GNU ext.
1171 backtrace_symbols_fd NEW: GNU ext.
1173 cacosf NEW: ISO C 9x
1174 cacosh NEW: ISO C 9x
1175 cacoshf NEW: ISO C 9x
1176 cacoshl NEW: ISO C 9x
1177 cacosl NEW: ISO C 9x
1184 casinf NEW: ISO C 9x
1185 casinh NEW: ISO C 9x
1186 casinhf NEW: ISO C 9x
1187 casinhl NEW: ISO C 9x
1188 casinl NEW: ISO C 9x
1190 catanf NEW: ISO C 9x
1191 catanh NEW: ISO C 9x
1192 catanhf NEW: ISO C 9x
1193 catanhl NEW: ISO C 9x
1194 catanl NEW: ISO C 9x
1195 cbc_crypt NEW: Secure RPC
1199 ccoshf NEW: ISO C 9x
1200 ccoshl NEW: ISO C 9x
1206 cimagf NEW: ISO C 9x
1207 cimagl NEW: ISO C 9x
1208 clearerr_locked REMOVED
1209 clntunix_create NEW: sunrpc ext
1211 clog10 NEW: ISO C 9x
1212 clog10f NEW: ISO C 9x
1213 clog10l NEW: ISO C 9x
1223 cprojf NEW: ISO C 9x
1224 cprojl NEW: ISO C 9x
1226 crealf NEW: ISO C 9x
1227 creall NEW: ISO C 9x
1232 csinhf NEW: ISO C 9x
1233 csinhl NEW: ISO C 9x
1236 csqrtf NEW: ISO C 9x
1237 csqrtl NEW: ISO C 9x
1241 ctanhf NEW: ISO C 9x
1242 ctanhl NEW: ISO C 9x
1244 des_setparity NEW: Secure RPC
1245 ecb_crypt NEW: Secure RPC
1246 endutxent NEW: Unix98
1248 exp10f NEW: ISO C 9x
1249 exp10l NEW: ISO C 9x
1253 fattach NEW: STREAMS
1254 fdetach NEW: STREAMS
1258 feclearexcept NEW: ISO C 9x
1259 fegetenv NEW: ISO C 9x
1260 fegetexceptflag NEW: ISO C 9x
1261 fegetround NEW: ISO C 9x
1262 feholdexcept NEW: ISO C 9x
1264 feraiseexcept NEW: ISO C 9x
1265 ferror_locked REMOVED
1266 fesetenv NEW: ISO C 9x
1267 fesetexceptflag NEW: ISO C 9x
1268 fesetround NEW: ISO C 9x
1269 fetestexcept NEW: ISO C 9x
1270 feupdateenv NEW: ISO C 9x
1271 fflush_locked REMOVED
1275 fgets_unlocked NEW: GNU ext.
1276 fileno_locked REMOVED
1288 fputc_locked REMOVED
1289 fputs_unlocked NEW: GNU ext.
1290 fread_unlocked NEW: GNU ext.
1295 fstatvfs NEW: Unix98
1299 ftruncate64 NEW: LFS
1301 fwrite_unlocked NEW: GNU ext.
1302 gai_strerror NEW: IPv6
1306 getchar_locked REMOVED
1308 getdate_err NEW: Unix98
1309 getdate_r NEW: GNU ext.
1311 getnameinfo NEW: IPv6
1312 getnetname NEW: Secure RPC
1313 getpmsg NEW: STREAMS
1314 getpt NEW: Unix98 PTY
1315 getrlimit64 NEW: LFS
1316 getutxent NEW: Unix98
1317 getutxid NEW: Unix98
1318 getutxline NEW: Unix98
1319 glob64 NEW: GNU ext.
1320 globfree64 NEW: GNU ext.
1321 gnu_get_libc_release NEW: GNU ext.
1322 gnu_get_libc_version NEW: GNU ext.
1323 grantpt NEW: Unix98 PTY
1324 host2netname NEW: Secure RPC
1326 iconv_close NEW: iconv
1327 iconv_open NEW: iconv
1328 if_freenameindex NEW: IPv6
1329 if_indextoname NEW: IPv6
1330 if_nameindex NEW: IPv6
1331 if_nametoindex NEW: IPv6
1332 in6addr_any NEW: IPv6
1333 in6addr_loopback NEW: IPv6
1334 inet6_isipv4mapped NEW: IPv6
1335 isastream NEW: STREAMS
1336 iswblank NEW: GNU ext.
1337 key_decryptsession NEW: Secure RPC
1338 key_decryptsession_pk NEW: Secure RPC
1339 key_encryptsession NEW: Secure RPC
1340 key_encryptsession_pk NEW: Secure RPC
1341 key_gendes NEW: Secure RPC
1342 key_get_conv NEW: Secure RPC
1343 key_secretkey_is_set NEW: Secure RPC
1344 key_setnet NEW: Secure RPC
1345 key_setsecret NEW: Secure RPC
1346 llrint NEW: ISO C 9x
1347 llrintf NEW: ISO C 9x
1348 llrintl NEW: ISO C 9x
1349 llround NEW: ISO C 9x
1350 llroundf NEW: ISO C 9x
1351 llroundl NEW: ISO C 9x
1356 lrintf NEW: ISO C 9x
1357 lrintl NEW: ISO C 9x
1358 lround NEW: ISO C 9x
1359 lroundf NEW: ISO C 9x
1360 lroundl NEW: ISO C 9x
1362 makecontext NEW: Unix98
1363 mempcpy NEW: GNU ext.
1366 modify_ldt NEW: kernel
1370 nearbyint NEW: ISO C 9x
1371 nearbyintf NEW: ISO C 9x
1372 nearbyintl NEW: ISO C 9x
1373 netname2host NEW: Secure RPC
1374 netname2user NEW: Secure RPC
1375 nexttoward NEW: ISO C 9x
1376 nexttowardf NEW: ISO C 9x
1377 nexttowardl NEW: ISO C 9x
1381 passwd2des NEW: Secure RPC
1383 pow10f NEW: GNU ext.
1384 pow10l NEW: GNU ext.
1387 printf_size NEW: GNU ext.
1388 printf_size_info NEW: GNU ext.
1389 profil_counter REMOVED
1390 pthread_mutexattr_getkind_np REPLACED
1391 pthread_mutexattr_setkind_np REPLACED
1392 ptsname NEW: Unix98 PTY
1393 ptsname_r NEW: Unix98 PTY
1395 putchar_locked REMOVED
1396 putgrent NEW: GNU ext.
1398 putpmsg NEW: STREAMS
1399 pututxline NEW: Unix98
1403 readdir64_r NEW: LFS
1404 remquo NEW: ISO C 9x
1405 remquof NEW: ISO C 9x
1406 remquol NEW: ISO C 9x
1408 roundf NEW: ISO C 9x
1409 roundl NEW: ISO C 9x
1411 scalbln NEW: ISO C 9x
1412 scalblnf NEW: ISO C 9x
1413 scalblnl NEW: ISO C 9x
1415 sendfile NEW: kernel
1416 setcontext NEW: Unix98
1417 setrlimit64 NEW: LFS
1418 setutxent NEW: Unix98
1420 sigignore NEW: Unix98
1421 sigqueue NEW: POSIX.1b
1422 sigrelse NEW: Unix98
1423 sigset NEW: POSIX.1b
1424 sigtimedwait NEW: POSIX.1b
1425 sigwaitinfo NEW: POSIX.1b
1426 sincos NEW: GNU ext.
1427 sincosf NEW: GNU ext.
1428 sincosl NEW: GNU ext.
1432 strcasestr NEW: GNU ext.
1433 strtoimax NEW: ISO C 9x
1434 strtoumax NEW: ISO C 9x
1435 strverscmp NEW: GNU ext.
1436 svcauthdes_stats NEW: Secure RPC
1437 svcunix_create NEW: sunrpc etx
1438 svcunixfd_create NEW: sunrpc ext
1439 swapcontext NEW: Unix98
1440 tcgetsid NEW: Unix98 PTY
1441 tdestroy NEW: GNU ext.
1442 tgamma NEW: ISO C 9x
1443 tgammaf NEW: ISO C 9x
1444 tgammal NEW: ISO C 9x
1448 truncf NEW: ISO C 9x
1449 truncl NEW: ISO C 9x
1451 unlockpt NEW: Unix98 PTY
1452 updwtmpx NEW: Unix98
1453 user2netname NEW: Secure RPC
1454 utmpxname NEW: Unix98
1455 versionsort NEW: GNU ext.
1456 versionsort64 NEW: GNU ext.
1458 wcscasecmp NEW: GNU ext.
1459 wcsncasecmp NEW: GNU ext.
1460 wcsnlen NEW: GNU ext.
1461 wcstoimax NEW: ISO C 9x
1462 wcstoll NEW: ISO C 9x
1463 wcstoull NEW: ISO C 9x
1464 wcstoumax NEW: ISO C 9x
1466 wordexp NEW: POSIX.2
1467 wordfree NEW: POSIX.2
1468 write_profiling REMOVED
1469 xdecrypt NEW: Secure RPC
1470 xdr_authdes_cred NEW: Secure RPC
1471 xdr_authdes_verf NEW: Secure RPC
1472 xdr_cryptkeyarg NEW: Secure RPC
1473 xdr_cryptkeyarg2 NEW: Secure RPC
1474 xdr_cryptkeyres NEW: Secure RPC
1475 xdr_getcredres NEW: Secure RPC
1476 xdr_key_netstarg NEW: Secure RPC
1477 xdr_key_netstres NEW: Secure RPC
1478 xdr_keybuf NEW: Secure RPC
1479 xdr_keystatus NEW: Secure RPC
1480 xdr_netnamestr NEW: Secure RPC
1481 xdr_sizeof NEW: Secure RPC
1482 xdr_unixcred NEW: sunrpc ext
1483 xencrypt NEW: Secure RPC
1484 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1495 * inet_ntoa is thread-safe
1497 * updwtmp is moved from libutil to libc
1499 * rewrite of cbrt function
1501 * update of timezone data
1515 * add atoll function
1517 * fix complex problems in Berkeley DB code
1519 * fix math functions
1523 * fixed lots of header problems (especially Linux/GNU specific)
1525 * dynamic loader preserves all registers
1527 * Roland McGrath provided support for handling of auxiliary objects in
1528 the ELF dynamic loader.
1530 * support for parallel builds is improved
1534 * GNU extensions are no longer declared by default. To enable them you
1535 must define the macro `_GNU_SOURCE' in your program or compile with
1538 * The library has changed from using GNU ld symbol aliases to using weak
1539 symbols where available. The ELF object file format supports weak
1540 symbols; GNU ld also supports weak symbols in the a.out format. (There
1541 is also now support for other GNU ld extensions in ELF. Use the
1542 `--with-elf' option to configure to indicate you have ELF, and
1543 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1544 of many files which contained only symbol aliases, reducing the size of
1545 the source and the compiled library; many other files were renamed to
1546 less cryptic names previously occupied by the symbol alias files.
1547 There is a new header file <elf.h> for programs which operate on
1548 files in the ELF format.
1550 * Converted to Autoconf version 2, so `configure' has more options.
1551 Run `configure --help' to see the details.
1553 * The library can now be configured to build profiling, highly-optimized
1554 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1555 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1556 `configure' enable building these extra libraries. The shared library is
1557 built by default when using both ELF and GNU ld. When shared libraries
1558 are enabled, the new library `-ldl' is available for arbitrary run-time
1559 loading of shared objects; its interface is defined in <dlfcn.h>. The
1560 new header file <link.h> gives access to the internals of the run-time
1561 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1562 application of same name on other systems and it provides information
1563 about dynamically linked binaries.
1565 * The C library now provides the run-time support code for profiling
1566 executables compiled with `-pg'. Programs can control the profiling code
1567 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1568 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1569 the support for this file format was contributed by David Mosberger-Tang.
1571 * The math code has been replaced with a math library based on fdlibm from
1572 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1573 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1574 functions. The math functions now reside in a separate library, so
1575 programs using them will need to use `-lm' their linking commands.
1577 * John C. Bowman contributed optimized ix87 assembler inline functions.
1579 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1580 mechanism similar to that found in Solaris 2. This is now used for the
1581 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1582 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1583 file controls what services are used for each individual database. This
1584 works by loading shared libraries with names specified in `nsswitch.conf',
1585 so service modules can be changed or added at any time without even
1586 relinking any program. Currently there are the file, db, and NIS based
1587 NSS services available.
1589 * The new functions `strtoq' and `strtouq' parse integer values from
1590 strings, like `strtol' and `strtoul', but they return `long long int' and
1591 `unsigned long long int' values, respectively (64-bit quantities).
1593 * The new functions `strtof' and `strtold' parse floating-point values from
1594 strings, like `strtod', but they return `float' and `long double' values,
1595 respectively (on some machines `double' and `long double' are the same).
1597 * Ulrich Drepper has contributed new implementations of the floating-point
1598 printing and reading code used in the `printf' family of functions and
1599 `strtod', `strtof', and `strtold'. These new functions are perfectly
1600 accurate, and much faster than the old ones.
1602 * The implementation of the POSIX locale model was completely rewritten by
1603 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1604 to compile the POSIX locale definition.
1606 * The former dummy implementations of the strcoll and strxfrm function are
1607 now replaced by fully functional code contributed by Ulrich Drepper. The
1608 collation information comes from the POSIX locale definitions.
1610 * The new header <langinfo.h> defines an interface for accessing
1611 various locale-dependent data (using the locale chosen with `setlocale').
1613 * Ulrich Drepper has contributed a new suite of functions for operation on
1614 wide-character and multibyte-character strings, in <wchar.h>;
1615 and classification and case conversion of wide characters, in <wctype.h>.
1616 These new functions are conforming to the ISO C, Amendement 1 specification.
1618 * There is now a second implementation of the standard I/O library available.
1619 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1620 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1622 * You can now use positional parameter specifications in format strings
1623 for the `printf' and `scanf' families of functions. For example,
1624 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1625 ``Number 6, Mr Jones''. This is mainly useful when providing different
1626 format strings for different languages, whose grammars may dictate
1627 different orderings of the values being printed. To support this
1628 feature, the interface for `register_printf_handler' has changed; see
1629 the header file <printf.h> for details.
1631 * The `printf' and `scanf' families of functions now understand a new
1632 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1633 to group numbers as indicated by the locale; for `scanf' and friends, this
1634 says to accept as valid only a number with all the proper grouping
1635 separators in the right places. In the default "C" locale, numbers are
1636 not grouped; but locales for specific countries will define the usual
1637 conventions (i.e. separate thousands with `,' in the US locale).
1639 * The pgrp functions have been regularized, slightly incompatibly but much
1640 less confusingly. The core functions are now `getpgid' and `setpgid',
1641 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1642 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1643 provided for compatibility. There is no longer an incompatible `getpgrp'
1644 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1646 * The new header file <fts.h> and suite of functions simplify programs that
1647 operate on directory trees. This code comes from 4.4 BSD.
1649 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1650 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1651 NSS scheme used in glibc.
1653 * There is a new malloc debugging hook `__memalign_hook'.
1655 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1656 `unsigned int' in <sys/types.h>. These are for compatibility only and
1657 their use is discouraged.
1659 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1660 done differently, so that it works even without GNU ld.
1662 * New function `euidaccess' checks allowed access to a file like `access',
1663 but using the effective IDs instead of the real IDs.
1665 * The time zone data files have been updated for the latest and greatest
1666 local time conventions of the countries of the world.
1668 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1671 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1672 for formatting floating-point numbers. They are provided only for
1673 compatibility; new programs should use `sprintf' instead. There are
1674 also equivalent function for the `long double' floating-point type and
1675 all functions also exist in a reentrant form.
1677 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1678 functions for maintaining the login-record files (primarily of use to
1679 system programs such as `login'), and convenient functions for
1680 allocating and initializing a pseudo-terminal (pty) device.
1682 * Ulrich Drepper has contributed new support for System V style
1683 shared memory and IPC on systems that support it.
1685 * Ulrich Drepper has contributed several miscellaneous new functions found
1686 in System V: The `hsearch' family of functions provide an effective
1687 implementation of hash tables; `a64l' and `l64a' provide a very simple
1688 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1691 * Ulrich Drepper has contributed new reentrant counterparts for the
1692 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1694 * Ulrich Drepper has contributed new, highly-optimized versions of several
1695 string functions for the i486/Pentium family of processors.
1697 * Ulrich Drepper has updated the Linux-specific code, based largely
1698 on work done in Hongjiu Lu's version of GNU libc for Linux.
1699 The GNU library now supports Linux versions 2.0.10 and later,
1700 using the ELF object file format (i[3456]86-*-linux).
1702 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1704 * David Mosberger-Tang and Richard Henderson have ported the C library
1705 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1706 dynamic linking support for ELF/Alpha.
1708 * Richard Henderson contributed several Alpha optimized assembler function
1709 for arithmetic and string handling.
1711 * Ulrich Drepper has contributed a new set of message catalog functions to
1712 support multiple languages using the <libintl.h> interface, for use with
1713 his new package GNU gettext. Translation volunteers have contributed
1714 catalogs of the library's messages in Spanish, German, and Korean.
1716 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1717 program and the `catgets' function for reading the catalog files it
1718 creates. (The <libintl.h> interface is preferred; we include the
1719 <nl_types.h> interface using `catgets' only for source compatibility with
1720 programs already written to use it.)
1722 * New header file <values.h> gives SVID-compatible names for <limits.h>
1725 * Various new macros, declarations, and small header files for compatibility
1728 * New function `group_member' is a convenient way to check if a process has
1729 a given effective group ID.
1731 * When using GCC 2.7 and later, the socket functions are now declared in a
1732 special way so that passing an argument of type `struct sockaddr_in *',
1733 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1734 `struct sockaddr *' type, does not generate a type-clash warning.
1736 * New function `error' declared in header file <error.h> is a convenient
1737 function for printing error messages and optionally exiting; this is the
1738 canonical function used in GNU programs. The new functions `err', `warn',
1739 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1740 doing the same thing.
1742 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1743 POSIX.2 `glob' function to do ~ and {...} expansion.
1745 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1746 `clearenv' which is used in POSIX.9 is also available.
1748 * New function `getsid' returns session ID number on systems that support it.
1750 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1751 files <db.h> and <mpool.h> provide a rich set of functions for several
1752 types of simple databases stored in memory and in files, and <ndbm.h> is
1753 an old `ndbm'-compatible interface using the `db' functions. Link with
1754 `-ldb' to get these functions.
1756 * New macro `strdupa' copies a string like `strdup', but uses local stack
1757 space from `alloca' instead of dynamic heap space from `malloc'.
1759 * New function `strnlen' is like `strlen' but searches only a given maximum
1760 number of characters for the null terminator. `stpncpy', `strndup' and
1761 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1764 * New function `statfs' in header <sys/statfs.h>.
1766 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1767 provide convenient functions for operating on blocks of null-terminated
1770 * A new suite of functions in <utmp.h> handle all the details of reading
1771 and writing the utmp file.
1773 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1776 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1777 completely POSIX compliant and also implemented the extended functionality
1778 to handle alternate digit representation and alternate era date formats.
1780 * Ulrich Drepper provided an implementation of the `strptime' function
1781 defined in XPG4.2 which transforms a string into a `struct tm' value.
1783 * Paul Eggert provided the tzselect shell script as part of the timezone
1784 code. The shell script makes it easy to select the correct timezone
1787 * The implementation of the malloc family of functions is completely replaced
1788 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1789 The implementation uses the mmap function (if available) and it is
1790 optimized for the use in multi threaded programs.
1792 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1793 functions. This new functionality is usable by specifying a special
1794 salt string and it is compatible with implementation on *BSD systems.
1796 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1797 `getsubopt' to handle second level command line options, `bsd_signal'
1798 to access BSD style `signal' functionality, the obsolete `regexp' style
1801 * the `lchown' function is available on system which support this
1804 * The implementation of the shadow password handling function was contributed
1807 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1809 * POSIX.1g support was added. The <sys/select.h> header is available,
1810 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1811 implementation of `getaddrinfo'.
1815 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1817 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1818 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1820 * The new function `daemon' from 4.4 BSD is useful for server programs that
1821 want to put themselves in the background.
1823 * Joel Sherrill has contributed support for several standalone boards that
1824 run without an operating system.
1826 * `printf', `scanf' and friends now accept a `q' type modifier for long
1827 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1829 * All of the code taken from BSD (notably most of the math and networking
1830 routines) has been updated from the BSD 4.4-Lite release.
1832 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1834 * The new functions `getdomainname' and `setdomainname' fetch or change the
1835 YP/NIS domain name. These are system calls which exist on systems which
1838 * The time zone data files have been updated for the latest international
1841 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1842 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1846 * The C library now includes support for Sun RPC, from Sun's free
1847 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1848 are included. (There is still no support for YP.)
1850 * Tom Quinn has contributed a port of the C library to SGI machines running
1851 Irix 4 (mips-sgi-irix4).
1853 * The new `lockf' function is a simplified interface to the locking
1854 facilities of `fcntl', included for compatibility.
1856 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1858 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1860 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1863 * The error message printed by `assert' for a failed assertion now includes
1864 the name of the program (if using GNU ld) and the name of the calling
1865 function (with versions of GCC that support this).
1867 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1869 * The library now includes the <sys/mman.h> header file and memory
1870 management functions `mmap', `munmap', `mprotect', `msync', and
1871 `madvise', on systems that support those facilities.
1873 * The interface for `mcheck' has changed slightly: the function called to
1874 abort the program when an allocation inconsistency is detected now takes
1875 an argument that indicates the type of failure. The new function
1876 `mprobe' lets you request a consistency check for a particular block at
1877 any time (checks are normally done only when you call `free' or `realloc'
1880 * It is now possible to easily cross-compile the C library, building on one
1881 system a library to run on another machine and/or operating system. All
1882 you need to do is set the variable `HOST_CC' in `configparms' to the
1883 native compiler for programs to run on the machine you are building on (a
1884 few generator programs are used on Unix systems); set `CC' to the
1887 * The new function `fexecve' (only implemented on the GNU system) executes
1888 a program file given a file descriptor already open on the file.
1892 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1893 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1895 * You can set the variable `libprefix' in `configparms' to specify a prefix
1896 to be prepended to installed library files; this makes it easy to install
1897 the GNU C library to be linked as `-lgnuc' or whatever.
1899 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1900 copies a limited number of characters from a string, and returns the
1901 address of the last character written.
1903 * You no longer need to check for whether the installed `stddef.h' is
1904 compatible with the GNU C library. configure now checks for you.
1906 * You can now define a per-stream `fileno' function to convert the
1907 stream's cookie into an integral file descriptor.
1909 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1910 allocates zero bytes of storage, and returns a unique pointer which
1911 you can pass to `realloc' or `free'. The behavior is undefined if
1912 you dereference this pointer.
1914 * The C library now runs on Sony NEWS m68k machines running either
1915 NewsOS 3 or NewsOS 4.
1917 * The new `syscall' function is a system-dependent primitive function
1918 for invoking system calls. It has the canonical behavior on Unix
1919 systems, including unreliable return values for some calls (such as
1920 `pipe', `fork' and `getppid').
1922 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1923 to `EAGAIN', which is the preferred name. On systems whose kernels
1924 use two distinct codes, the C library now translates EWOULDBLOCK to
1925 EAGAIN in every system call function.
1929 * The GNU C Library Reference Manual is now distributed with the library.
1930 `make dvi' will produce a DVI file of the printed manual.
1931 `make info' will produce Info files that you can read on line using C-h i
1932 in Emacs or the `info' program.
1933 Please send comments on the manual to bug-glibc-manual@gnu.org.
1935 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1937 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1939 * Jason Merrill has contributed a port to the Sequent Symmetry running
1940 Dynix version 3 (i386-sequent-dynix).
1942 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1943 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1945 * New function `memory_warnings' lets you arrange to get warnings when
1946 malloc is running out of memory to allocate, like Emacs gives you.
1948 * The C library now contains the relocating allocator used in Emacs 19 for
1949 its editing buffers. This allocator (ralloc) minimizes allocation
1950 overhead and fragmentation by moving allocated regions around whenever it
1951 needs to. You always refer to a ralloc'd region with a "handle" (a
1952 pointer to a pointer--an object of type `void **').
1954 * There is a new `printf' format: `%m' gives you the string corresponding
1955 to the error code in `errno'.
1957 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1958 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1959 pass, the `a' modifier says to fill in a `char **' you pass with a
1962 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1963 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1964 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1966 * `mkstemp' is a traditional Unix function to atomically create and open a
1967 uniquely-named temporary file.
1971 * The standard location for the file that says what the local timezone is
1972 has changed again. It is now `/usr/local/etc/localtime' (or more
1973 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1975 * The distribution no longer contains any files with names longer than 14
1978 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1979 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1981 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1985 * The configuration process has changed quite a bit. The `configure'
1986 script is now used just like the configuration scripts for other GNU
1987 packages. The `sysdeps' directory hierarchy is much rearranged.
1988 The file `INSTALL' explains the new scheme in detail.
1990 * The header files no longer need to be processed into ANSI C and
1991 traditional C versions. There is just one set of files to install, and
1992 it will work with ANSI or old C compilers (including `gcc -traditional').
1994 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1995 MIPS DECStation running Ultrix 4.
1997 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1998 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1999 made itself into a shared library.
2001 * Yet further improved support for the i386, running 4.3 BSD-like systems
2002 (such as Mach 3 with the Unix single-server), or System V.
2004 * New function `strncasecmp' to do case-insensitive string comparison
2005 with limited length.
2007 * New function `strsep' is a reentrant alternative to `strtok'.
2009 * New functions `scandir' and `alphasort' for searching directories.
2011 * New function `setenv' is a better interface to `putenv'.
2013 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2014 function for traversing a directory tree.
2016 * The GNU obstack package is now also part of the C library.
2017 The new function `open_obstack_stream' creates a stdio stream that
2018 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2019 formatted output directly to an obstack.
2021 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2022 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2024 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2026 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2027 things to your strings.
2029 * There are some new test programs: test-fseek, testmb, and testrand.
2031 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2032 These ports are not finished, but are a good starting place for really
2033 supporting those systems.
2035 * `/etc/localtime' is now the standard location for the file that says what
2036 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2037 This follows the general principle that `/etc' is the place for all local
2038 configuration files.
2040 * The C library header files now use `extern "C"' when used by the C++
2041 compiler, so the C library should now work with C++ code.
2043 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2044 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2047 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2048 function which uses the `merge sort' algorithm, and is said to be
2049 significantly faster than the old GNU `qsort' function. Merge sort is
2050 now the standard `qsort' function. The new algorithm can require a lot
2051 of temporary storage; so, the old sorting function is called when the
2052 required storage is not available.
2054 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2055 provides the Unix `crypt' function, plus some other entry points.
2057 * The code and header files taken from 4.4 BSD have been updated with the
2058 latest files released from Berkeley.
2060 ----------------------------------------------------------------------
2061 Copyright information:
2063 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2065 Permission is granted to anyone to make or distribute verbatim copies
2066 of this document as received, in any medium, provided that the
2067 copyright notice and this permission notice are preserved,
2068 thus giving the recipient permission to redistribute in turn.
2070 Permission is granted to distribute modified versions
2071 of this document, or of portions of it,
2072 under the above conditions, provided also that they
2073 carry prominent notices stating who last changed them.
2076 version-control: never
projects / platform / upstream / linaro-glibc.git / blob