1 GNU C Library NEWS -- history of user-visible changes. 2011-12-22
2 Copyright (C) 1992-2009, 2010, 2011 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 6779, 6783, 9696, 10103, 10709, 11589, 12403, 12847, 12868, 12852, 12874,
13 12885, 12892, 12907, 12922, 12935, 13007, 13021, 13067, 13068, 13090,
14 13092, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13179, 13192,
15 13268, 13276, 13291, 13305, 13335, 13337, 13344, 13358, 13367, 13413,
16 13416, 13423, 13439, 13446, 13472, 13484, 13506, 13515, 13523, 13524,
19 * New program pldd to list loaded object of a process
20 Implemented by Ulrich Drepper.
22 * Add nss_db support back to glibc. No more dependency on Berkeley db
23 and support for initgroups lookups.
24 Implemented by Ulrich Drepper.
26 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
29 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
32 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
34 Contributed by Liubov Dmitrieva.
36 * Optimized strchr and strrchr for SSE on x86-32.
37 Contributed by Liubov Dmitrieva.
39 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
40 for x86-64 and x86-32.
41 Contributed by Liubov Dmitrieva.
43 * New interfaces: scandirat, scandirat64
44 Implemented by Ulrich Drepper.
46 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
47 Implemented by Ulrich Drepper.
49 * nscd now also caches the netgroup database.
50 Implemented by Ulrich Drepper.
52 * Integrate libm with gcc's -ffinite-math-only option.
53 Implemented by Ulrich Drepper.
55 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
56 to math functions. Implemented by Ulrich Drepper.
58 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
59 Implemented by Ulrich Drepper.
61 * New Linux interfaces: process_vm_readv, process_vm_writev
63 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
64 Implemented by Ulrich Drepper.
66 * Optimized nearbyint and strcasecmp for PPC.
67 Implemented by Adhemerval Zanella.
69 * New locales: bho_IN, unm_US, es_CU
73 * The following bugs are resolved with this release:
75 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
76 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
77 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
78 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
79 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
80 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
81 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
82 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
83 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
84 12795, 12811, 12813, 12814, 12841
86 * The RPC implementation in libc is obsoleted. Old programs keep working
87 but new programs cannot be linked with the routines in libc anymore.
88 Programs in need of RPC functionality must be linked against TI-RPC.
89 The TI-RPC implementation is IPv6 enabled and there are other benefits.
91 Visible changes of this change include (obviously) the inability to link
92 programs using RPC functions without referencing the TI-RPC library and the
93 removal of the RPC headers from the glibc headers.
94 Implemented by Ulrich Drepper.
96 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
97 syncfs, setns, sendmmsg
99 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
100 yue_HK, lij_IT, mhr_RU
102 * New encodings: CP770, CP771, CP772, CP773, CP774
104 * New program sotruss to trace calls through PLTs
105 Implemented by Ulrich Drepper.
107 * The malloc hook implementation is marked deprecated and will be removed
108 from the default implementation in the next version. The design never
109 worked ever since the introduction of threads. Even programs which do
110 not create threads themselves can use multiple threads created internally.
114 * The following bugs are resolved with this release:
116 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
117 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
118 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
119 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
122 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
124 * POWER7 optimizations: memset, memcmp, strncmp
126 * New optimized string functions for x86-64: strnlen (SSE2),
127 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
128 Implemented by Ulrich Drepper.
132 * The following bugs are resolved with this release:
134 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
135 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
136 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
137 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
138 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
139 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
140 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
141 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
143 * New interfaces: pthread_getname_np, pthread_setname_np
145 * New Linux interface: recvmmsg
147 * STT_GNU_IFUNC implemented for Sparc by David Miller.
149 * The dynamic linker now recognizes supported ABI versions from the
150 EI_ABIVERSION field in the ELF header.
151 Implemented by Ulrich Drepper.
153 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
154 will not be used to fill in password fields in the passwd.byname replies.
155 Instead it is used to synthesize the shadow.byname table, should it be
156 missing. This is a useful mode in some installations involving Solaris.
157 Implemented by Ulrich Drepper.
159 * New locales: kok_IN, sq_MK, cv_RU
163 * The following bugs are resolved with this release:
165 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
166 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
167 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
168 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
169 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
170 10789, 10817, 10823, 10840, 10847
172 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
174 Implemented by Ulrich Drepper.
176 * Checking version of longjmp added that fails if an uninitialized stack
177 frame would be created. Implemented by Ulrich Drepper.
179 * STT_GNU_IFUNC is now supported in static executables.
180 Implemented by H.J. Lu.
182 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
184 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
185 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
186 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
187 Contributed by H.J. Lu.
189 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
190 Implemented by Ulrich Drepper.
192 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
194 Contributed by H.J. Lu.
196 * Support for fma instruction in AVX on x86-64.
197 Implemented by H.J. Lu and Ulrich Drepper.
199 * AVX support in x86-64 auditing support in ld.so.
200 Implemented by H.J. Lu.
202 * STB_GNU_UNIQUE support added.
203 Implemented by Ulrich Drepper.
205 * Implement second fallback mode for optimized DNS lookup for even more
206 broken environments. If two requests from the same port are not
207 handled correctly close the socket and open a new one before sending
208 the second request. The 'single-request-reopen' option in /etc/resolv.conf
209 can be used to select this mode right away, instead of rediscovering the
210 necessity is every process again.
211 Implemented by Ulrich Drepper.
213 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
214 Implemented by Adam Tkac.
216 * Optimized iconv conversions for S390x.
217 Implemented by Andreas Krebbel.
219 * Using condvars with PI mutexes is now more efficient due to kernel
220 support for requeueing to PI futexes. NPTL support added for x86-64.
221 Implemented by Ulrich Drepper.
223 * New locales: ps_AF, my_MM
227 * The following bugs are resolved with this release:
229 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
230 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
231 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
232 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
233 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
235 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
236 Implemented by Ulrich Drepper.
238 * New Linux interfaces: accept4, fallocate, fallocate64.
239 Implemented by Ulrich Drepper.
241 * Correct declarations of string function when used in C++ code. This
242 could lead to compile errors for invalid C++ code.
244 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
247 * New POSIX 2008 interface: psiginfo
248 Implemented by Ulrich Drepper.
250 * New ISO C++1x interfaces: quick_exit, at_quick_exit
251 Implemented by Ulrich Drepper.
253 * Support for selecting between multiple function definitions at runtime
254 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
256 * The libcrypt library can now use the hash function implementations in
257 NSS. Implemented by Ulrich Drepper.
259 * The malloc implementation can be compiled to be less memory efficient
260 but higher performing in multi-threaded programs.
261 Implemented by Ulrich Drepper.
263 * New locales: nan_TW@latin, ks_IN
265 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
266 Implemented by Ulrich Drepper.
268 * Extended printf hook support. It is possible to use user-defined types
269 and extend existing format specifiers.
270 Implemented by Ulrich Drepper.
272 * Handling for group shadow files has been added.
273 Implemented by Ulrich Drepper.
275 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
276 servers (the case, e.g., for some people using the built-in DNS
277 server in ADSL modems/routers). There is a once-per-process timeout
278 in case of a broken server. To avoid it, users can run nscd or put
279 'options single-request' in /etc/resolv.conf.
280 Implemented by Ulrich Drepper.
284 * The following bugs are resolved with this release:
286 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
287 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
288 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
289 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
290 6968, 6974, 6980, 6995, 7008, 7009, 7029
292 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
293 up at the same time. Implemented by Ulrich Drepper.
295 * TLS descriptors for LD and GD on x86 and x86-64.
296 Implemented by Alexandre Oliva.
298 * getaddrinfo now handles DCCP and UDPlite.
299 Implemented by Ulrich Drepper.
301 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
302 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
303 Implemented by Ulrich Drepper.
305 * New implementation of memmem, strstr, and strcasestr which is O(n).
306 Implemented by Eric Blake.
308 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
310 * Implement "e" option for popen to open file descriptor with the
311 close-on-exec flag set. Implemented by Ulrich Drepper.
313 * Implement "b" mode for fmemopen. In this mode writes writes don't
314 implicitly add a NUL byte and seeks from the end of the buffer really
315 use the buffer end, not the string length as the basis.
316 Implemented by Ulrich Drepper.
318 * Many functions, exported and internal, now atomically set the close-on-exec
319 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
321 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
323 Implemented by Pravin Satpute.
325 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
329 * The following bugs are resolved with this release:
331 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
332 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
333 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
334 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
335 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
336 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
337 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
339 * New locales: bo_CN, bo_IN, shs_CA.
341 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
343 * Sorting rules for some Indian languages (Devanagari and Gujarati).
344 Implemented by Pravin Satpute.
346 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
348 * nscd caches now all timeouts for DNS entries
349 Implemented by Ulrich Drepper.
351 * nscd is more efficient and wakes up less often.
352 Implemented by Ulrich Drepper.
354 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
355 vdprintf, and obstack_vprintf.
356 Implemented by Jakub Jelinek.
358 * Faster memset for x86-64.
359 Implemented by Harsha Jagasia and H.J. Lu.
361 * Faster memcpy on x86.
362 Implemented by Ulrich Drepper.
364 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
365 Implemented by Ulrich Drepper.
367 * Faster sqrt and sqrtf implemention for some PPC variants.
368 Implemented by Stephen Munroe.
372 * The following bugs are resolved with this release:
374 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
375 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
376 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
377 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
378 5071, 5103, 5104, 5112, 5113, 5184, 5186
380 * More checking functions: fread, fread_unlocked, open*, mq_open.
381 Implemented by Jakub Jelinek and Ulrich Drepper.
383 * Extend fortification to C++. Implemented by Jakub Jelinek.
385 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
386 by not recognizing 'a' as a modifier when those specs are requested.
387 Implemented by Jakub Jelinek.
389 * PPC optimizations to math and string functions.
390 Implemented by Steven Munroe.
392 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
393 options to be passed. Implemented by Ulrich Drepper.
395 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
397 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
398 Implemented by Ulrich Drepper.
400 * Handle private futexes in the NPTL implementation.
401 Implemented by Jakub Jelinek and Ulrich Drepper.
403 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
404 Implemented by Roland McGrath and Ulrich Drepper.
406 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
408 * SHA-256 and SHA-512 based password encryption.
409 Implemented by Ulrich Drepper.
411 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
412 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
415 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
416 Implemented by Ulrich Drepper.
420 * The following bugs are resolved with this release:
422 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
423 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
424 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
425 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
426 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
427 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
428 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
431 * New Linux interfaces: epoll_pwait, sched_getcpu.
433 * New generic interfaces: strerror_l.
435 * nscd can now cache the services database. Implemented by Ulrich Drepper.
439 * The following bugs are resolved with this release:
441 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
442 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
443 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
444 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
445 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
446 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
447 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
448 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
449 3225, 3251, 3252, 3253, 3273
451 * For Linux, the sorting of addresses returned by getaddrinfo now also
452 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
453 Implemented by Ulrich Drepper.
455 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
456 Implemented by Ulrich Drepper.
458 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
460 * New iconv module for MIK. Contributed by Alexander Shopov.
462 * For sites with broken group and/or passwd database, the auto-propagate
463 option of nscd can prevent creating ID lookup entries from the results
464 of a name lookup and vice versa. This usually is no problem but some
465 site might have problems with the default behavior.
466 Implemented by Ulrich Drepper.
468 * Iterating over entire database in NIS can be slow. With the
469 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
470 to trade time for memory. The entire database will be read at once.
471 Implemented by Ulrich Drepper.
473 * The interfaces introduced in RFC 3542 have been implemented by
476 * Support for the new ELF hash table format was added by Ulrich Drepper.
478 * Support for priority inheritance mutexes added by Jakub Jelinek and
481 * Support for priority protected mutexes added by Jakub Jelinek.
483 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
484 or_IN, csb_PL, fy_NL, sr_ME.
488 * More overflow detection functions.
490 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
491 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
493 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
494 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
495 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
496 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
497 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
498 by Masahide Washizawa.
500 * It is now possible to install audit libraries for the dynamic linker using
501 LD_AUDIT. Implemented by Ulrich Drepper.
503 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
504 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
505 For a libc and libpthread that works well on Linux 2.4 kernels, we
506 recommend using the stable 2.3 branch.
508 * The new function open_wmemstream acts like open_memstream,
509 but uses a wchar_t wide character buffer.
511 * The new function ppoll is an improved version of poll, similar to pselect.
513 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
514 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
515 renameat, unlinkat, linkat, symlinkat, readlinkat.
517 * New Linux kernel system calls: unshare,
518 inotify_init, inotify_add_watch, inotify_rm_watch.
520 * The euidaccess function is now also known by the alias eaccess,
521 for compatibility with some other systems.
523 * Timezone data updated to 2006b version.
527 * The following bugs are resolved with this release:
529 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
530 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
531 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
532 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
533 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
534 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
536 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
538 * As of this release, GCC 4 can be used to compile the C Library.
540 * Timezone data updated to 2005m version.
544 * The following bugs are resolved with this release:
546 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
547 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
548 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
549 777, 787, 821, 822, 823, 825
551 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
555 * Support for RFC 3678. Real implementations exist only for Linux so far.
556 Implemented by Ulrich Drepper.
558 * nscd can now cache entries persistently. Expiring entries are reloaded.
559 For speedups the cache can be shared in memory with client processes.
560 Implemented by Ulrich Drepper.
562 * nscd can now perform SELinux checks.
563 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
565 * getaddrinfo queries are now cached. Canonical name lookup is performed
567 Implemented by Ulrich Drepper.
569 * The nothrow function attribute is used when headers are used by gcc when
570 compiling C code. This can avoid significant amounts of exception
573 * The malloc functions perform more error checking and are stricter when
574 it comes to reacting on errors. The default action is to terminate
575 the process after showing an error message. Implemented by Ulrich Drepper.
577 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
578 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
580 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
581 namespaces using the new function dlmopen(). This feature is of course,
582 like most other dynamic loading functionality, not available in statically
583 linked applications. Implemented by Ulrich Drepper.
585 * Low-overhead boundary checking variants of string and some stdio functions
586 were added. These are to be used in conjunction with a gcc patch by
587 Jakub Jelinek which adds calls to these functions if possible.
588 Implemented by Jakub Jelinek and Ulrich Drepper.
590 * Old code for several operating systems and machine architectures that
591 have not been in working condition in a long time have been removed from
592 the main source tree maintained by the GNU C Library's maintainers.
593 These files are now reside in the separate `ports' source module
594 that is usable as an add-on when building the library.
598 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
599 interrogate the dynamic linker, compatible with the Solaris interface.
601 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
602 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
604 * getifaddrs now uses the netlink interface on Linux to get its information.
605 Implemented by Thorsten Kukuk.
607 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
608 Implemented by Ulrich Drepper.
610 * support for non-executable stacks on x86 has been added. Changes mostly
613 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
616 * getaddrinfo now performs destination address selection according to
621 * Thread-safe interfaces for many functions that access locale data
622 were added in version 2.3, but these features were omitted from NEWS.
623 Many functions have variants with an `_l' suffix that take a `locale_t'
624 object as a parameter rather than consulting the current locale.
625 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
626 create and maintain `locale_t' objects. Additionally, the new function
627 `uselocale' sets "the current locale" (as used by functions not so
628 parameterized) set for an individual thread. These features were added
629 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
631 * The functions getresuid, getresgid, setresuid, and setresgid, which
632 have long been available on Linux, are now declared in <unistd.h>
633 and are now also available on the Hurd.
635 * ELF thread-local storage support (TLS) now works on x86-64.
637 * The new dynamic string token $LIB is expanded in shared library names.
638 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
640 * Aldy Hernandez contributed complete software floating point support for
641 PowerPC machines with no FPU.
643 * fexecve is implemented on Linux.
645 * The `btowc' function should work at least twice as fast due to
646 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
648 * With approriate thread add-ons cancelable functions are now implemented
649 in libc.so as well. No need to call the function in libpthread. This
650 change allowed to finally disable the incorrect and expensive handling
651 of weak definition in ld.so.
653 * Yet more PLT entries in libc.so have been removed. We finally arrived
654 at the bare minimum. Startup times improved appropriately.
656 * Support for the new Linux/x86 system call interface was added. The
657 AT_SYSINFO auxiliary vector entry is recognized and handled.
661 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
664 * iconv (the program and the interface) now accepts empty names (excluding
665 options like //TRANSLIT) to mean "use charset of current locale".
667 * localedef can now transliterate characters in strings which are not in
668 the provided charmap. The information from the input locale is used.
670 * Prelinking support was added for ELF targets. This requires additional
671 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
673 * Read-only stdio streams now use mmap to speed up operation by eliminating
674 copying and buffer underflows. To use add 'm' to the mode string of
675 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
677 * The malloc functions were completely rewritten by Wolfram Gloger based
678 on Doug Lea's malloc-2.7.0.c.
680 * Isamu Hasegawa contributed a completely new and POSIX-conformant
681 implementation of regex.
683 * Bruno Haible upgraded the iconv and locale implementation to support
686 * Contents of the LC_* and LANG environment variables in the CEN style are
687 not recognized anymore. It never was used. Change by Ulrich Drepper.
689 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
690 thread-local storage (TLS) ABI on some platforms.
691 Changes by Ulrich Drepper. SH support by Kaz Kojima.
693 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
694 EUC-JISX0213, and TSCII.
696 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
697 BSD-compatible interface for getting all network interface addresses.
698 Implementation for IPv4 by Roland McGrath.
700 * Loading of locale data is faster due to the introduction of a locale
701 archive. Implemented by Roland McGrath and Ulrich Drepper.
703 * Startup times are significantly reduced by not using exported functions
704 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
707 * Steven Munroe contributed a port to PowerPC64/Linux.
711 * The Hurd now uses the GNU libio implementation of stdio rather than the
712 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
714 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
715 with the same behavior as the Linux system call of the same name.
719 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
720 128-bit long double format.
722 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
723 IBM1161, and IBM1162 charsets.
725 * Andreas Jaeger contributed a port to x86-64/Linux.
727 * Peter Bruin contributed a port to PowerPC/Hurd.
729 * libc functions using I/O streams now can handle wide-oriented streams
732 * optimizations in the dynamic linker. Binaries created by recent binutils
733 versions start up quicker due to reduced time spent on relocations.
735 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
739 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
740 asinh, atanh, j0 for the 128-bit long double format.
742 * Bruno Haible updated all the code handling Unicode in some form to
745 * Speed of regex for single-byte locales is back to previous levels.
746 Patch by Isamu Hasegawa.
748 * Alpha, SPARC, and IA-64 now also using floating stacks.
750 * Startup time of internationalized applications greatly improved through
751 iconv cache. Use iconvconfig to generate the cache file.
752 Contributed by Ulrich Drepper.
754 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
755 severe performance problems. Patch by David Mosberger.
757 * The Hurd port got a lot more functionality like AIO, various stdio
758 extensions, etc. Mainly done by Roland McGrath.
760 * mtrace can now lookup symbols in shared libraries.
764 * Intel's IA-64 math library is largely integrated. It provides fast and
765 accurate implementatations for most basic and standard math functions
766 in float, double, and long double format.
768 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
769 and asin for the 96-bit long double format and asin, log, tan for the
770 128-bit long double format.
772 * The beginning of a last-bit accurate math library by IBM Haifa were added.
773 The basic double functions exist today. Contributed by Abraham Ziv
774 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
775 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
777 * An asynchronous name lookup library was added. The interface is designed
778 after POSIX AIO. The proposal was circulated beforehand to get comments.
779 No negative ones came in. Implemented by Ulrich Drepper.
781 * Port to S390/64bit contributed by Martin Schwidefsky
782 <schwidefsky@de.ibm.com>.
784 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
785 of functions for Linux/IA-64.
787 * The RPC code is now thread safe. Threads can now use the same service
788 of different services at the same time. Patch by Eric Norum
789 <eric.norum@usask.ca> with some help by Ulrich Drepper.
791 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
792 family of functions for Linux/S390.
794 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
795 of functions for Linux/x86.
797 * Port to Linux/CRIS contributed by Axis Communications.
801 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
802 we can now check for namespace violations and missing declarations. The
803 result is that almost all headers are now Unix-compliant (as defined in
804 the upcoming XPG6). The negative side is that some programs might need
805 corrections, too, if they depend on the incorrect form of the headers in
806 previous versions which defined too many symbols and included too many
809 * regex now handles multibyte character sets correctly.
810 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
812 * iconv (the program) does now conform to the upcoming XPG6 and handles
813 charmaps. Instead of the charset names the path of charmaps can be
814 provided and the conversion happens based on this data.
815 Contributed by Ulrich Drepper.
817 * The locale program now provides detailed information about the installed
822 only lists the names of the supported locales
826 provides details such as country, language, and codeset name.
827 Contributed by Ulrich Drepper.
831 * The gencat program now parses the input file according to the charset
832 selected by the LC_CTYPE category. This is important for stateful
833 character sets. To make generating catalogs easier there is a way
834 to overwrite the charset selected by the locale: before the first
835 message or $ quote line the catalog can contain a line like
839 to select the charset (ISO-8859-2 in this case).
841 Implemented by Shinya Hanataka and Ulrich Drepper.
843 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
844 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
845 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
847 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
848 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
850 * The LANGUAGE environment variable is now ignored unless the locale is
851 changed from the default "C" locale.
853 * The usual bug fixes.
857 * Greg McGary added runtime support for bounds checking using gcc's
858 new -fbounded-pointers option. ix86 target is complete. PowerPC
861 * Thorsten Kukuk added secure mode support to nscd.
863 * The Berkeley db libraries have been removed.
865 Related, the nss_db module is now in a separate package since it
866 obviously requires a database library being available.
868 * Wide character I/O streams implemented by Ulrich Drepper.
870 * Functions from the extended socket API added by Ulrich Drepper.
872 * Functions feenableexcept and fedisableexcept to control the
873 behaviour of individual exceptions have been added by Andreas Jaeger.
875 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
877 * The resolver code has been updated from bind 8.2.3-T5B which supports
878 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
881 This change could in some situations effect backward compatibility. Since
882 now `_res' is a thread-local instead of a global variable, modifying it
883 in one thread does not have any effect in other threads.
885 The resolver library was also extended to allow IPv6 as the transport
886 protocol for the requests. This work was done by Stig Venaas.
888 * Compatibility code for K&R C compilers has been removed from the
889 header files. A ISO C compiler is needed to use the library
890 (conforming to either C89 or C99 standard).
892 * Complete rewrite of the localedef program to support multibyte character
893 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
894 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
895 Implemented by Ulrich Drepper.
897 Bruno Haible significantly improved the generation and use of the data
898 structures for the wide character tables.
900 * Plural handling in gettext implemented by Ulrich Drepper.
902 * The utmp daemon has been removed.
904 * The port to MIPS-Linux has been finished by Andreas Jaeger.
906 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
909 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
911 * POSIX barriers implemented by Kaz Kylheku.
913 * POSIX spawn function family implemented by Ulrich Drepper.
915 * POSIX spinlocks are now available.
917 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
919 * the configure option --enable-kernel=X.Y.Z allows to strip out
920 compatibility for kernel versions before X.Y.Z. This is currently only
921 implemented for Linux.
923 * the sockaddr_in6 structure changed. The IPv6 working group added a new
924 field sin6_scope_id. This means that all programs using IPv6 should be
925 recompiled. Don't expect binary compatibility with previous glibc
928 * various conversion modules for IBM character sets contributed by
931 * IA-64 port by Jes Sorensen and HJ Lu.
933 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
934 Compiling the GNU C Library for Linux/ia64
935 ******************************************
937 Please refer to the file INSTALL in the same directory as you found
938 this file for general information about configuring and compiling
941 For general inquiries about glibc under Linux/ia64 please use the
942 following mailing list linux-ia64@linuxia64.org or one of the relevant
945 Recommended Tools for Compilation
946 =================================
948 In order for glibc-2.2 to build correctly on the ia64 you need at
949 least the following versions of the GNU tools (the :
951 * The Cygnus toolchain snapshot for the ia64 as of August 4
952 including the provided set of patches. It is however recommend
953 you use the October 24 toolchain snapshot or a more recent version.
955 OR alternatively you can try the following (the Cygnus toolchain is
956 the recommended solution):
958 * GCC and binutils, GAS and GNU LD out of CVS from
959 sources.redhat.com as of August 28, 2000 or later. The CVS tree
960 may require special patches to work properly on the ia64.
962 Configuring and compiling GNU Libc for Linux/ia64
963 =================================================
965 The library requires Linux kernel version 2.4.0-test4-000728 or
966 later to funtion properly. Besides that it support for debug libraries
967 is currently untested. Hence the following options
968 are required for configuring the library:
970 --disable-debug --enable-kernel=2.4.0
972 It is also important that you make sure the library picks up the
973 appropriate kernel header files, if you do not have recent enough
974 kernel headers in /usr/src/linux/include, you should use the
975 --with-headers=<path> option to specify the location.
977 As an example I personally use the following options to configure
982 --enable-kernel=2.4.0
986 --with-headers=/home/jes/linux/include
991 Jes Sorensen <jes@linuxcare.com>,
993 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1007 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1009 * New xdr functions are added; some rpc functions are now 64bit clean.
1011 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1013 * Fixed known incompatibilities with glibc 2.0.
1015 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1017 * Optimized a number of functions (especially the ELF dynamic loader).
1019 * Update timezone data files.
1021 * lots of charmaps corrections
1023 * some new locale definitions and charmaps
1028 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1029 conform to POSIX member type requirements. Symbol versions have been
1030 adjusted as needed within the library, and for direct use by applications,
1031 but there is potential for problems if third-party libraries use
1032 struct timeval as part of their interface. This does not present
1033 a problem for X and other "essential" system libraries.
1035 * An additional locale model to support C++ Standard Library locale
1036 model and probably more was implemented by Ulrich Drepper.
1038 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1041 * Miles Bader provided the `argp' function family to support hierachical
1042 command line argument parsing, layered on top of getopt.
1044 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1046 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1049 * scanf recognizes the %a and %A format for scanning floating point numbers.
1051 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1052 information and interfaces for the available integer types.
1054 * about 130 new math functions were added to implement the ISO C9x math
1057 * the new header <complex.h> contains definitions of the complex math
1058 functions from ISO C 9X.
1060 * the new header <tgmath.h> defines generic macros to use complex or
1061 real valued functions.
1063 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1065 * Andreas Jaeger provided a test suite for the math library.
1067 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1069 * Ulrich Drepper added character set conversion functions (iconv).
1071 * Optimized string functions have been added.
1073 * The localedata addon is now part of glibc.
1075 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1077 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1078 daemon for NSS (nscd).
1080 Missing a better place here are some numbers on improvements. Under
1081 Linux 2.1.125 un-tar-ing the kernel sources takes
1085 using local files 12.19s 6.88s 22.91s
1087 using NIS 13.92s 8.91s 26.34s
1089 using NIS & nscd 10.37s 7.34s 25.30s
1091 using NIS+ 27.57s 30.37s 640.46s
1093 using NIS+ & nscd 10.25s 7.83s 26.51s
1095 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1097 Keep in mind that non-namelookup related operations dominate above times.
1098 It was just a common complain that using NIS+ unpacking the kernel is
1101 [1] The old nscd implementation is not available anymore since it was
1102 distributed with glibc up to version 2.0.98 and thus is now replaced.
1104 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1106 * Mark Kettenis provided a Hesiod NSS module.
1108 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1109 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1111 * rcmd can now handle netgroups (Dick Streefland).
1113 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1116 * Support for the IPv6 protocol has been added to the socket API, as per the
1117 latest draft standards.
1119 * Support for Linux 2.2 has been added.
1121 * Interface changes relative to the latest 2.0.x release:
1122 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1123 addseverity NEW: Unix98
1124 alphasort64 NEW: LFS
1125 argp_err_exit_status NEW: argp, GNU ext
1126 argp_error NEW: argp, GNU ext
1127 argp_failure NEW: argp, GNU ext
1128 argp_help NEW: argp, GNU ext
1129 argp_parse NEW: argp, GNU ext
1130 argp_program_bug_address NEW: argp, GNU ext
1131 argp_program_version NEW: argp, GNU ext
1132 argp_program_version_hook NEW: argp, GNU ext
1133 argp_state_help NEW: argp, GNU ext
1134 argp_usage NEW: argp, GNU ext
1135 authdes_create NEW: Secure RPC
1136 authdes_getucred NEW: Secure RPC
1137 authdes_pk_create NEW: Secure RPC
1138 backtrace NEW: GNU ext.
1139 backtrace_symbols NEW: GNU ext.
1140 backtrace_symbols_fd NEW: GNU ext.
1142 cacosf NEW: ISO C 9x
1143 cacosh NEW: ISO C 9x
1144 cacoshf NEW: ISO C 9x
1145 cacoshl NEW: ISO C 9x
1146 cacosl NEW: ISO C 9x
1153 casinf NEW: ISO C 9x
1154 casinh NEW: ISO C 9x
1155 casinhf NEW: ISO C 9x
1156 casinhl NEW: ISO C 9x
1157 casinl NEW: ISO C 9x
1159 catanf NEW: ISO C 9x
1160 catanh NEW: ISO C 9x
1161 catanhf NEW: ISO C 9x
1162 catanhl NEW: ISO C 9x
1163 catanl NEW: ISO C 9x
1164 cbc_crypt NEW: Secure RPC
1168 ccoshf NEW: ISO C 9x
1169 ccoshl NEW: ISO C 9x
1175 cimagf NEW: ISO C 9x
1176 cimagl NEW: ISO C 9x
1177 clearerr_locked REMOVED
1178 clntunix_create NEW: sunrpc ext
1180 clog10 NEW: ISO C 9x
1181 clog10f NEW: ISO C 9x
1182 clog10l NEW: ISO C 9x
1192 cprojf NEW: ISO C 9x
1193 cprojl NEW: ISO C 9x
1195 crealf NEW: ISO C 9x
1196 creall NEW: ISO C 9x
1201 csinhf NEW: ISO C 9x
1202 csinhl NEW: ISO C 9x
1205 csqrtf NEW: ISO C 9x
1206 csqrtl NEW: ISO C 9x
1210 ctanhf NEW: ISO C 9x
1211 ctanhl NEW: ISO C 9x
1213 des_setparity NEW: Secure RPC
1214 ecb_crypt NEW: Secure RPC
1215 endutxent NEW: Unix98
1217 exp10f NEW: ISO C 9x
1218 exp10l NEW: ISO C 9x
1222 fattach NEW: STREAMS
1223 fdetach NEW: STREAMS
1227 feclearexcept NEW: ISO C 9x
1228 fegetenv NEW: ISO C 9x
1229 fegetexceptflag NEW: ISO C 9x
1230 fegetround NEW: ISO C 9x
1231 feholdexcept NEW: ISO C 9x
1233 feraiseexcept NEW: ISO C 9x
1234 ferror_locked REMOVED
1235 fesetenv NEW: ISO C 9x
1236 fesetexceptflag NEW: ISO C 9x
1237 fesetround NEW: ISO C 9x
1238 fetestexcept NEW: ISO C 9x
1239 feupdateenv NEW: ISO C 9x
1240 fflush_locked REMOVED
1244 fgets_unlocked NEW: GNU ext.
1245 fileno_locked REMOVED
1257 fputc_locked REMOVED
1258 fputs_unlocked NEW: GNU ext.
1259 fread_unlocked NEW: GNU ext.
1264 fstatvfs NEW: Unix98
1268 ftruncate64 NEW: LFS
1270 fwrite_unlocked NEW: GNU ext.
1271 gai_strerror NEW: IPv6
1275 getchar_locked REMOVED
1277 getdate_err NEW: Unix98
1278 getdate_r NEW: GNU ext.
1280 getnameinfo NEW: IPv6
1281 getnetname NEW: Secure RPC
1282 getpmsg NEW: STREAMS
1283 getpt NEW: Unix98 PTY
1284 getrlimit64 NEW: LFS
1285 getutxent NEW: Unix98
1286 getutxid NEW: Unix98
1287 getutxline NEW: Unix98
1288 glob64 NEW: GNU ext.
1289 globfree64 NEW: GNU ext.
1290 gnu_get_libc_release NEW: GNU ext.
1291 gnu_get_libc_version NEW: GNU ext.
1292 grantpt NEW: Unix98 PTY
1293 host2netname NEW: Secure RPC
1295 iconv_close NEW: iconv
1296 iconv_open NEW: iconv
1297 if_freenameindex NEW: IPv6
1298 if_indextoname NEW: IPv6
1299 if_nameindex NEW: IPv6
1300 if_nametoindex NEW: IPv6
1301 in6addr_any NEW: IPv6
1302 in6addr_loopback NEW: IPv6
1303 inet6_isipv4mapped NEW: IPv6
1304 isastream NEW: STREAMS
1305 iswblank NEW: GNU ext.
1306 key_decryptsession NEW: Secure RPC
1307 key_decryptsession_pk NEW: Secure RPC
1308 key_encryptsession NEW: Secure RPC
1309 key_encryptsession_pk NEW: Secure RPC
1310 key_gendes NEW: Secure RPC
1311 key_get_conv NEW: Secure RPC
1312 key_secretkey_is_set NEW: Secure RPC
1313 key_setnet NEW: Secure RPC
1314 key_setsecret NEW: Secure RPC
1315 llrint NEW: ISO C 9x
1316 llrintf NEW: ISO C 9x
1317 llrintl NEW: ISO C 9x
1318 llround NEW: ISO C 9x
1319 llroundf NEW: ISO C 9x
1320 llroundl NEW: ISO C 9x
1325 lrintf NEW: ISO C 9x
1326 lrintl NEW: ISO C 9x
1327 lround NEW: ISO C 9x
1328 lroundf NEW: ISO C 9x
1329 lroundl NEW: ISO C 9x
1331 makecontext NEW: Unix98
1332 mempcpy NEW: GNU ext.
1335 modify_ldt NEW: kernel
1339 nearbyint NEW: ISO C 9x
1340 nearbyintf NEW: ISO C 9x
1341 nearbyintl NEW: ISO C 9x
1342 netname2host NEW: Secure RPC
1343 netname2user NEW: Secure RPC
1344 nexttoward NEW: ISO C 9x
1345 nexttowardf NEW: ISO C 9x
1346 nexttowardl NEW: ISO C 9x
1350 passwd2des NEW: Secure RPC
1352 pow10f NEW: GNU ext.
1353 pow10l NEW: GNU ext.
1356 printf_size NEW: GNU ext.
1357 printf_size_info NEW: GNU ext.
1358 profil_counter REMOVED
1359 pthread_mutexattr_getkind_np REPLACED
1360 pthread_mutexattr_setkind_np REPLACED
1361 ptsname NEW: Unix98 PTY
1362 ptsname_r NEW: Unix98 PTY
1364 putchar_locked REMOVED
1365 putgrent NEW: GNU ext.
1367 putpmsg NEW: STREAMS
1368 pututxline NEW: Unix98
1372 readdir64_r NEW: LFS
1373 remquo NEW: ISO C 9x
1374 remquof NEW: ISO C 9x
1375 remquol NEW: ISO C 9x
1377 roundf NEW: ISO C 9x
1378 roundl NEW: ISO C 9x
1380 scalbln NEW: ISO C 9x
1381 scalblnf NEW: ISO C 9x
1382 scalblnl NEW: ISO C 9x
1384 sendfile NEW: kernel
1385 setcontext NEW: Unix98
1386 setrlimit64 NEW: LFS
1387 setutxent NEW: Unix98
1389 sigignore NEW: Unix98
1390 sigqueue NEW: POSIX.1b
1391 sigrelse NEW: Unix98
1392 sigset NEW: POSIX.1b
1393 sigtimedwait NEW: POSIX.1b
1394 sigwaitinfo NEW: POSIX.1b
1395 sincos NEW: GNU ext.
1396 sincosf NEW: GNU ext.
1397 sincosl NEW: GNU ext.
1401 strcasestr NEW: GNU ext.
1402 strtoimax NEW: ISO C 9x
1403 strtoumax NEW: ISO C 9x
1404 strverscmp NEW: GNU ext.
1405 svcauthdes_stats NEW: Secure RPC
1406 svcunix_create NEW: sunrpc etx
1407 svcunixfd_create NEW: sunrpc ext
1408 swapcontext NEW: Unix98
1409 tcgetsid NEW: Unix98 PTY
1410 tdestroy NEW: GNU ext.
1411 tgamma NEW: ISO C 9x
1412 tgammaf NEW: ISO C 9x
1413 tgammal NEW: ISO C 9x
1417 truncf NEW: ISO C 9x
1418 truncl NEW: ISO C 9x
1420 unlockpt NEW: Unix98 PTY
1421 updwtmpx NEW: Unix98
1422 user2netname NEW: Secure RPC
1423 utmpxname NEW: Unix98
1424 versionsort NEW: GNU ext.
1425 versionsort64 NEW: GNU ext.
1427 wcscasecmp NEW: GNU ext.
1428 wcsncasecmp NEW: GNU ext.
1429 wcsnlen NEW: GNU ext.
1430 wcstoimax NEW: ISO C 9x
1431 wcstoll NEW: ISO C 9x
1432 wcstoull NEW: ISO C 9x
1433 wcstoumax NEW: ISO C 9x
1435 wordexp NEW: POSIX.2
1436 wordfree NEW: POSIX.2
1437 write_profiling REMOVED
1438 xdecrypt NEW: Secure RPC
1439 xdr_authdes_cred NEW: Secure RPC
1440 xdr_authdes_verf NEW: Secure RPC
1441 xdr_cryptkeyarg NEW: Secure RPC
1442 xdr_cryptkeyarg2 NEW: Secure RPC
1443 xdr_cryptkeyres NEW: Secure RPC
1444 xdr_getcredres NEW: Secure RPC
1445 xdr_key_netstarg NEW: Secure RPC
1446 xdr_key_netstres NEW: Secure RPC
1447 xdr_keybuf NEW: Secure RPC
1448 xdr_keystatus NEW: Secure RPC
1449 xdr_netnamestr NEW: Secure RPC
1450 xdr_sizeof NEW: Secure RPC
1451 xdr_unixcred NEW: sunrpc ext
1452 xencrypt NEW: Secure RPC
1453 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1464 * inet_ntoa is thread-safe
1466 * updwtmp is moved from libutil to libc
1468 * rewrite of cbrt function
1470 * update of timezone data
1484 * add atoll function
1486 * fix complex problems in Berkeley DB code
1488 * fix math functions
1492 * fixed lots of header problems (especially Linux/GNU specific)
1494 * dynamic loader preserves all registers
1496 * Roland McGrath provided support for handling of auxiliary objects in
1497 the ELF dynamic loader.
1499 * support for parallel builds is improved
1503 * GNU extensions are no longer declared by default. To enable them you
1504 must define the macro `_GNU_SOURCE' in your program or compile with
1507 * The library has changed from using GNU ld symbol aliases to using weak
1508 symbols where available. The ELF object file format supports weak
1509 symbols; GNU ld also supports weak symbols in the a.out format. (There
1510 is also now support for other GNU ld extensions in ELF. Use the
1511 `--with-elf' option to configure to indicate you have ELF, and
1512 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1513 of many files which contained only symbol aliases, reducing the size of
1514 the source and the compiled library; many other files were renamed to
1515 less cryptic names previously occupied by the symbol alias files.
1516 There is a new header file <elf.h> for programs which operate on
1517 files in the ELF format.
1519 * Converted to Autoconf version 2, so `configure' has more options.
1520 Run `configure --help' to see the details.
1522 * The library can now be configured to build profiling, highly-optimized
1523 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1524 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1525 `configure' enable building these extra libraries. The shared library is
1526 built by default when using both ELF and GNU ld. When shared libraries
1527 are enabled, the new library `-ldl' is available for arbitrary run-time
1528 loading of shared objects; its interface is defined in <dlfcn.h>. The
1529 new header file <link.h> gives access to the internals of the run-time
1530 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1531 application of same name on other systems and it provides information
1532 about dynamically linked binaries.
1534 * The C library now provides the run-time support code for profiling
1535 executables compiled with `-pg'. Programs can control the profiling code
1536 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1537 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1538 the support for this file format was contributed by David Mosberger-Tang.
1540 * The math code has been replaced with a math library based on fdlibm from
1541 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1542 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1543 functions. The math functions now reside in a separate library, so
1544 programs using them will need to use `-lm' their linking commands.
1546 * John C. Bowman contributed optimized ix87 assembler inline functions.
1548 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1549 mechanism similar to that found in Solaris 2. This is now used for the
1550 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1551 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1552 file controls what services are used for each individual database. This
1553 works by loading shared libraries with names specified in `nsswitch.conf',
1554 so service modules can be changed or added at any time without even
1555 relinking any program. Currently there are the file, db, and NIS based
1556 NSS services available.
1558 * The new functions `strtoq' and `strtouq' parse integer values from
1559 strings, like `strtol' and `strtoul', but they return `long long int' and
1560 `unsigned long long int' values, respectively (64-bit quantities).
1562 * The new functions `strtof' and `strtold' parse floating-point values from
1563 strings, like `strtod', but they return `float' and `long double' values,
1564 respectively (on some machines `double' and `long double' are the same).
1566 * Ulrich Drepper has contributed new implementations of the floating-point
1567 printing and reading code used in the `printf' family of functions and
1568 `strtod', `strtof', and `strtold'. These new functions are perfectly
1569 accurate, and much faster than the old ones.
1571 * The implementation of the POSIX locale model was completely rewritten by
1572 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1573 to compile the POSIX locale definition.
1575 * The former dummy implementations of the strcoll and strxfrm function are
1576 now replaced by fully functional code contributed by Ulrich Drepper. The
1577 collation information comes from the POSIX locale definitions.
1579 * The new header <langinfo.h> defines an interface for accessing
1580 various locale-dependent data (using the locale chosen with `setlocale').
1582 * Ulrich Drepper has contributed a new suite of functions for operation on
1583 wide-character and multibyte-character strings, in <wchar.h>;
1584 and classification and case conversion of wide characters, in <wctype.h>.
1585 These new functions are conforming to the ISO C, Amendement 1 specification.
1587 * There is now a second implementation of the standard I/O library available.
1588 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1589 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1591 * You can now use positional parameter specifications in format strings
1592 for the `printf' and `scanf' families of functions. For example,
1593 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1594 ``Number 6, Mr Jones''. This is mainly useful when providing different
1595 format strings for different languages, whose grammars may dictate
1596 different orderings of the values being printed. To support this
1597 feature, the interface for `register_printf_handler' has changed; see
1598 the header file <printf.h> for details.
1600 * The `printf' and `scanf' families of functions now understand a new
1601 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1602 to group numbers as indicated by the locale; for `scanf' and friends, this
1603 says to accept as valid only a number with all the proper grouping
1604 separators in the right places. In the default "C" locale, numbers are
1605 not grouped; but locales for specific countries will define the usual
1606 conventions (i.e. separate thousands with `,' in the US locale).
1608 * The pgrp functions have been regularized, slightly incompatibly but much
1609 less confusingly. The core functions are now `getpgid' and `setpgid',
1610 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1611 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1612 provided for compatibility. There is no longer an incompatible `getpgrp'
1613 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1615 * The new header file <fts.h> and suite of functions simplify programs that
1616 operate on directory trees. This code comes from 4.4 BSD.
1618 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1619 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1620 NSS scheme used in glibc.
1622 * There is a new malloc debugging hook `__memalign_hook'.
1624 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1625 `unsigned int' in <sys/types.h>. These are for compatibility only and
1626 their use is discouraged.
1628 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1629 done differently, so that it works even without GNU ld.
1631 * New function `euidaccess' checks allowed access to a file like `access',
1632 but using the effective IDs instead of the real IDs.
1634 * The time zone data files have been updated for the latest and greatest
1635 local time conventions of the countries of the world.
1637 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1640 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1641 for formatting floating-point numbers. They are provided only for
1642 compatibility; new programs should use `sprintf' instead. There are
1643 also equivalent function for the `long double' floating-point type and
1644 all functions also exist in a reentrant form.
1646 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1647 functions for maintaining the login-record files (primarily of use to
1648 system programs such as `login'), and convenient functions for
1649 allocating and initializing a pseudo-terminal (pty) device.
1651 * Ulrich Drepper has contributed new support for System V style
1652 shared memory and IPC on systems that support it.
1654 * Ulrich Drepper has contributed several miscellaneous new functions found
1655 in System V: The `hsearch' family of functions provide an effective
1656 implementation of hash tables; `a64l' and `l64a' provide a very simple
1657 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1660 * Ulrich Drepper has contributed new reentrant counterparts for the
1661 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1663 * Ulrich Drepper has contributed new, highly-optimized versions of several
1664 string functions for the i486/Pentium family of processors.
1666 * Ulrich Drepper has updated the Linux-specific code, based largely
1667 on work done in Hongjiu Lu's version of GNU libc for Linux.
1668 The GNU library now supports Linux versions 2.0.10 and later,
1669 using the ELF object file format (i[3456]86-*-linux).
1671 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1673 * David Mosberger-Tang and Richard Henderson have ported the C library
1674 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1675 dynamic linking support for ELF/Alpha.
1677 * Richard Henderson contributed several Alpha optimized assembler function
1678 for arithmetic and string handling.
1680 * Ulrich Drepper has contributed a new set of message catalog functions to
1681 support multiple languages using the <libintl.h> interface, for use with
1682 his new package GNU gettext. Translation volunteers have contributed
1683 catalogs of the library's messages in Spanish, German, and Korean.
1685 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1686 program and the `catgets' function for reading the catalog files it
1687 creates. (The <libintl.h> interface is preferred; we include the
1688 <nl_types.h> interface using `catgets' only for source compatibility with
1689 programs already written to use it.)
1691 * New header file <values.h> gives SVID-compatible names for <limits.h>
1694 * Various new macros, declarations, and small header files for compatibility
1697 * New function `group_member' is a convenient way to check if a process has
1698 a given effective group ID.
1700 * When using GCC 2.7 and later, the socket functions are now declared in a
1701 special way so that passing an argument of type `struct sockaddr_in *',
1702 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1703 `struct sockaddr *' type, does not generate a type-clash warning.
1705 * New function `error' declared in header file <error.h> is a convenient
1706 function for printing error messages and optionally exiting; this is the
1707 canonical function used in GNU programs. The new functions `err', `warn',
1708 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1709 doing the same thing.
1711 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1712 POSIX.2 `glob' function to do ~ and {...} expansion.
1714 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1715 `clearenv' which is used in POSIX.9 is also available.
1717 * New function `getsid' returns session ID number on systems that support it.
1719 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1720 files <db.h> and <mpool.h> provide a rich set of functions for several
1721 types of simple databases stored in memory and in files, and <ndbm.h> is
1722 an old `ndbm'-compatible interface using the `db' functions. Link with
1723 `-ldb' to get these functions.
1725 * New macro `strdupa' copies a string like `strdup', but uses local stack
1726 space from `alloca' instead of dynamic heap space from `malloc'.
1728 * New function `strnlen' is like `strlen' but searches only a given maximum
1729 number of characters for the null terminator. `stpncpy', `strndup' and
1730 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1733 * New function `statfs' in header <sys/statfs.h>.
1735 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1736 provide convenient functions for operating on blocks of null-terminated
1739 * A new suite of functions in <utmp.h> handle all the details of reading
1740 and writing the utmp file.
1742 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1745 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1746 completely POSIX compliant and also implemented the extended functionality
1747 to handle alternate digit representation and alternate era date formats.
1749 * Ulrich Drepper provided an implementation of the `strptime' function
1750 defined in XPG4.2 which transforms a string into a `struct tm' value.
1752 * Paul Eggert provided the tzselect shell script as part of the timezone
1753 code. The shell script makes it easy to select the correct timezone
1756 * The implementation of the malloc family of functions is completely replaced
1757 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1758 The implementation uses the mmap function (if available) and it is
1759 optimized for the use in multi threaded programs.
1761 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1762 functions. This new functionality is usable by specifying a special
1763 salt string and it is compatible with implementation on *BSD systems.
1765 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1766 `getsubopt' to handle second level command line options, `bsd_signal'
1767 to access BSD style `signal' functionality, the obsolete `regexp' style
1770 * the `lchown' function is available on system which support this
1773 * The implementation of the shadow password handling function was contributed
1776 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1778 * POSIX.1g support was added. The <sys/select.h> header is available,
1779 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1780 implementation of `getaddrinfo'.
1784 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1786 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1787 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1789 * The new function `daemon' from 4.4 BSD is useful for server programs that
1790 want to put themselves in the background.
1792 * Joel Sherrill has contributed support for several standalone boards that
1793 run without an operating system.
1795 * `printf', `scanf' and friends now accept a `q' type modifier for long
1796 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1798 * All of the code taken from BSD (notably most of the math and networking
1799 routines) has been updated from the BSD 4.4-Lite release.
1801 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1803 * The new functions `getdomainname' and `setdomainname' fetch or change the
1804 YP/NIS domain name. These are system calls which exist on systems which
1807 * The time zone data files have been updated for the latest international
1810 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1811 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1815 * The C library now includes support for Sun RPC, from Sun's free
1816 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1817 are included. (There is still no support for YP.)
1819 * Tom Quinn has contributed a port of the C library to SGI machines running
1820 Irix 4 (mips-sgi-irix4).
1822 * The new `lockf' function is a simplified interface to the locking
1823 facilities of `fcntl', included for compatibility.
1825 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1827 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1829 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1832 * The error message printed by `assert' for a failed assertion now includes
1833 the name of the program (if using GNU ld) and the name of the calling
1834 function (with versions of GCC that support this).
1836 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1838 * The library now includes the <sys/mman.h> header file and memory
1839 management functions `mmap', `munmap', `mprotect', `msync', and
1840 `madvise', on systems that support those facilities.
1842 * The interface for `mcheck' has changed slightly: the function called to
1843 abort the program when an allocation inconsistency is detected now takes
1844 an argument that indicates the type of failure. The new function
1845 `mprobe' lets you request a consistency check for a particular block at
1846 any time (checks are normally done only when you call `free' or `realloc'
1849 * It is now possible to easily cross-compile the C library, building on one
1850 system a library to run on another machine and/or operating system. All
1851 you need to do is set the variable `HOST_CC' in `configparms' to the
1852 native compiler for programs to run on the machine you are building on (a
1853 few generator programs are used on Unix systems); set `CC' to the
1856 * The new function `fexecve' (only implemented on the GNU system) executes
1857 a program file given a file descriptor already open on the file.
1861 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1862 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1864 * You can set the variable `libprefix' in `configparms' to specify a prefix
1865 to be prepended to installed library files; this makes it easy to install
1866 the GNU C library to be linked as `-lgnuc' or whatever.
1868 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1869 copies a limited number of characters from a string, and returns the
1870 address of the last character written.
1872 * You no longer need to check for whether the installed `stddef.h' is
1873 compatible with the GNU C library. configure now checks for you.
1875 * You can now define a per-stream `fileno' function to convert the
1876 stream's cookie into an integral file descriptor.
1878 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1879 allocates zero bytes of storage, and returns a unique pointer which
1880 you can pass to `realloc' or `free'. The behavior is undefined if
1881 you dereference this pointer.
1883 * The C library now runs on Sony NEWS m68k machines running either
1884 NewsOS 3 or NewsOS 4.
1886 * The new `syscall' function is a system-dependent primitive function
1887 for invoking system calls. It has the canonical behavior on Unix
1888 systems, including unreliable return values for some calls (such as
1889 `pipe', `fork' and `getppid').
1891 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1892 to `EAGAIN', which is the preferred name. On systems whose kernels
1893 use two distinct codes, the C library now translates EWOULDBLOCK to
1894 EAGAIN in every system call function.
1898 * The GNU C Library Reference Manual is now distributed with the library.
1899 `make dvi' will produce a DVI file of the printed manual.
1900 `make info' will produce Info files that you can read on line using C-h i
1901 in Emacs or the `info' program.
1902 Please send comments on the manual to bug-glibc-manual@gnu.org.
1904 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1906 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1908 * Jason Merrill has contributed a port to the Sequent Symmetry running
1909 Dynix version 3 (i386-sequent-dynix).
1911 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1912 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1914 * New function `memory_warnings' lets you arrange to get warnings when
1915 malloc is running out of memory to allocate, like Emacs gives you.
1917 * The C library now contains the relocating allocator used in Emacs 19 for
1918 its editing buffers. This allocator (ralloc) minimizes allocation
1919 overhead and fragmentation by moving allocated regions around whenever it
1920 needs to. You always refer to a ralloc'd region with a "handle" (a
1921 pointer to a pointer--an object of type `void **').
1923 * There is a new `printf' format: `%m' gives you the string corresponding
1924 to the error code in `errno'.
1926 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1927 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1928 pass, the `a' modifier says to fill in a `char **' you pass with a
1931 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1932 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1933 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1935 * `mkstemp' is a traditional Unix function to atomically create and open a
1936 uniquely-named temporary file.
1940 * The standard location for the file that says what the local timezone is
1941 has changed again. It is now `/usr/local/etc/localtime' (or more
1942 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1944 * The distribution no longer contains any files with names longer than 14
1947 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1948 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1950 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1954 * The configuration process has changed quite a bit. The `configure'
1955 script is now used just like the configuration scripts for other GNU
1956 packages. The `sysdeps' directory hierarchy is much rearranged.
1957 The file `INSTALL' explains the new scheme in detail.
1959 * The header files no longer need to be processed into ANSI C and
1960 traditional C versions. There is just one set of files to install, and
1961 it will work with ANSI or old C compilers (including `gcc -traditional').
1963 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1964 MIPS DECStation running Ultrix 4.
1966 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1967 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1968 made itself into a shared library.
1970 * Yet further improved support for the i386, running 4.3 BSD-like systems
1971 (such as Mach 3 with the Unix single-server), or System V.
1973 * New function `strncasecmp' to do case-insensitive string comparison
1974 with limited length.
1976 * New function `strsep' is a reentrant alternative to `strtok'.
1978 * New functions `scandir' and `alphasort' for searching directories.
1980 * New function `setenv' is a better interface to `putenv'.
1982 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1983 function for traversing a directory tree.
1985 * The GNU obstack package is now also part of the C library.
1986 The new function `open_obstack_stream' creates a stdio stream that
1987 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1988 formatted output directly to an obstack.
1990 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1991 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1993 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1995 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1996 things to your strings.
1998 * There are some new test programs: test-fseek, testmb, and testrand.
2000 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2001 These ports are not finished, but are a good starting place for really
2002 supporting those systems.
2004 * `/etc/localtime' is now the standard location for the file that says what
2005 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2006 This follows the general principle that `/etc' is the place for all local
2007 configuration files.
2009 * The C library header files now use `extern "C"' when used by the C++
2010 compiler, so the C library should now work with C++ code.
2012 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2013 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2016 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2017 function which uses the `merge sort' algorithm, and is said to be
2018 significantly faster than the old GNU `qsort' function. Merge sort is
2019 now the standard `qsort' function. The new algorithm can require a lot
2020 of temporary storage; so, the old sorting function is called when the
2021 required storage is not available.
2023 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2024 provides the Unix `crypt' function, plus some other entry points.
2026 * The code and header files taken from 4.4 BSD have been updated with the
2027 latest files released from Berkeley.
2029 ----------------------------------------------------------------------
2030 Copyright information:
2032 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2034 Permission is granted to anyone to make or distribute verbatim copies
2035 of this document as received, in any medium, provided that the
2036 copyright notice and this permission notice are preserved,
2037 thus giving the recipient permission to redistribute in turn.
2039 Permission is granted to distribute modified versions
2040 of this document, or of portions of it,
2041 under the above conditions, provided also that they
2042 carry prominent notices stating who last changed them.
2045 version-control: never
projects / platform / upstream / glibc.git / blob