1 GNU C Library NEWS -- history of user-visible changes. 2011-11-1
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, 10709, 11589, 12403, 12847, 12868, 12852, 12874, 12885,
13 12892, 12907, 12922, 12935, 13007, 13021, 13067, 13068, 13090, 13092,
14 13114, 13118, 13123, 13134, 13138, 13150, 13179, 13192, 13268, 13276,
15 13291, 13335, 13337, 13344, 13358, 13367
17 * New program pldd to list loaded object of a process
18 Implemented by Ulrich Drepper.
20 * Add nss_db support back to glibc. No more dependency on Berkeley db
21 and support for initgroups lookups.
22 Implemented by Ulrich Drepper.
24 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
27 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
30 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
32 Contributed by Liubov Dmitrieva.
34 * Optimized strchr and strrchr for SSE on x86-32.
35 Contributed by Liubov Dmitrieva.
37 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp for x86-64 and x86-32.
38 Contributed by Liubov Dmitrieva.
40 * New interfaces: scandirat, scandirat64
41 Implemented by Ulrich Drepper.
43 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
44 Implemented by Ulrich Drepper.
46 * nscd now also caches the netgroup database.
47 Implemented by Ulrich Drepper.
49 * Integrate libm with gcc's -ffinite-math-only option.
50 Implemented by Ulrich Drepper.
52 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
53 to math functions. Implemented by Ulrich Drepper.
55 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
56 Implemented by Ulrich Drepper.
58 * New Linux interfaces: process_vm_readv, process_vm_writev
62 * The following bugs are resolved with this release:
64 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
65 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
66 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
67 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
68 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
69 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
70 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
71 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
72 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
73 12795, 12811, 12813, 12814, 12841
75 * The RPC implementation in libc is obsoleted. Old programs keep working
76 but new programs cannot be linked with the routines in libc anymore.
77 Programs in need of RPC functionality must be linked against TI-RPC.
78 The TI-RPC implementation is IPv6 enabled and there are other benefits.
80 Visible changes of this change include (obviously) the inability to link
81 programs using RPC functions without referencing the TI-RPC library and the
82 removal of the RPC headers from the glibc headers.
83 Implemented by Ulrich Drepper.
85 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
86 syncfs, setns, sendmmsg
88 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
89 yue_HK, lij_IT, mhr_RU
91 * New encodings: CP770, CP771, CP772, CP773, CP774
93 * New program sotruss to trace calls through PLTs
94 Implemented by Ulrich Drepper.
96 * The malloc hook implementation is marked deprecated and will be removed
97 from the default implementation in the next version. The design never
98 worked ever since the introduction of threads. Even programs which do
99 not create threads themselves can use multiple threads created internally.
103 * The following bugs are resolved with this release:
105 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
106 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
107 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
108 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
111 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
113 * POWER7 optimizations: memset, memcmp, strncmp
115 * New optimized string functions for x86-64: strnlen (SSE2),
116 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
117 Implemented by Ulrich Drepper.
121 * The following bugs are resolved with this release:
123 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
124 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
125 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
126 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
127 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
128 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
129 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
130 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
132 * New interfaces: pthread_getname_np, pthread_setname_np
134 * New Linux interface: recvmmsg
136 * STT_GNU_IFUNC implemented for Sparc by David Miller.
138 * The dynamic linker now recognizes supported ABI versions from the
139 EI_ABIVERSION field in the ELF header.
140 Implemented by Ulrich Drepper.
142 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
143 will not be used to fill in password fields in the passwd.byname replies.
144 Instead it is used to synthesize the shadow.byname table, should it be
145 missing. This is a useful mode in some installations involving Solaris.
146 Implemented by Ulrich Drepper.
148 * New locales: kok_IN, sq_MK, cv_RU
152 * The following bugs are resolved with this release:
154 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
155 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
156 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
157 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
158 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
159 10789, 10817, 10823, 10840, 10847
161 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
163 Implemented by Ulrich Drepper.
165 * Checking version of longjmp added that fails if an uninitialized stack
166 frame would be created. Implemented by Ulrich Drepper.
168 * STT_GNU_IFUNC is now supported in static executables.
169 Implemented by H.J. Lu.
171 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
173 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
174 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
175 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
176 Contributed by H.J. Lu.
178 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
179 Implemented by Ulrich Drepper.
181 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
183 Contributed by H.J. Lu.
185 * Support for fma instruction in AVX on x86-64.
186 Implemented by H.J. Lu and Ulrich Drepper.
188 * AVX support in x86-64 auditing support in ld.so.
189 Implemented by H.J. Lu.
191 * STB_GNU_UNIQUE support added.
192 Implemented by Ulrich Drepper.
194 * Implement second fallback mode for optimized DNS lookup for even more
195 broken environments. If two requests from the same port are not
196 handled correctly close the socket and open a new one before sending
197 the second request. The 'single-request-reopen' option in /etc/resolv.conf
198 can be used to select this mode right away, instead of rediscovering the
199 necessity is every process again.
200 Implemented by Ulrich Drepper.
202 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
203 Implemented by Adam Tkac.
205 * Optimized iconv conversions for S390x.
206 Implemented by Andreas Krebbel.
208 * Using condvars with PI mutexes is now more efficient due to kernel
209 support for requeueing to PI futexes. NPTL support added for x86-64.
210 Implemented by Ulrich Drepper.
212 * New locales: ps_AF, my_MM
216 * The following bugs are resolved with this release:
218 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
219 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
220 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
221 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
222 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
224 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
225 Implemented by Ulrich Drepper.
227 * New Linux interfaces: accept4, fallocate, fallocate64.
228 Implemented by Ulrich Drepper.
230 * Correct declarations of string function when used in C++ code. This
231 could lead to compile errors for invalid C++ code.
233 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
236 * New POSIX 2008 interface: psiginfo
237 Implemented by Ulrich Drepper.
239 * New ISO C++1x interfaces: quick_exit, at_quick_exit
240 Implemented by Ulrich Drepper.
242 * Support for selecting between multiple function definitions at runtime
243 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
245 * The libcrypt library can now use the hash function implementations in
246 NSS. Implemented by Ulrich Drepper.
248 * The malloc implementation can be compiled to be less memory efficient
249 but higher performing in multi-threaded programs.
250 Implemented by Ulrich Drepper.
252 * New locales: nan_TW@latin, ks_IN
254 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
255 Implemented by Ulrich Drepper.
257 * Extended printf hook support. It is possible to use user-defined types
258 and extend existing format specifiers.
259 Implemented by Ulrich Drepper.
261 * Handling for group shadow files has been added.
262 Implemented by Ulrich Drepper.
264 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
265 servers (the case, e.g., for some people using the built-in DNS
266 server in ADSL modems/routers). There is a once-per-process timeout
267 in case of a broken server. To avoid it, users can run nscd or put
268 'options single-request' in /etc/resolv.conf.
269 Implemented by Ulrich Drepper.
273 * The following bugs are resolved with this release:
275 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
276 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
277 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
278 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
279 6968, 6974, 6980, 6995, 7008, 7009, 7029
281 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
282 up at the same time. Implemented by Ulrich Drepper.
284 * TLS descriptors for LD and GD on x86 and x86-64.
285 Implemented by Alexandre Oliva.
287 * getaddrinfo now handles DCCP and UDPlite.
288 Implemented by Ulrich Drepper.
290 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
291 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
292 Implemented by Ulrich Drepper.
294 * New implementation of memmem, strstr, and strcasestr which is O(n).
295 Implemented by Eric Blake.
297 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
299 * Implement "e" option for popen to open file descriptor with the
300 close-on-exec flag set. Implemented by Ulrich Drepper.
302 * Implement "b" mode for fmemopen. In this mode writes writes don't
303 implicitly add a NUL byte and seeks from the end of the buffer really
304 use the buffer end, not the string length as the basis.
305 Implemented by Ulrich Drepper.
307 * Many functions, exported and internal, now atomically set the close-on-exec
308 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
310 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
312 Implemented by Pravin Satpute.
314 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
318 * The following bugs are resolved with this release:
320 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
321 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
322 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
323 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
324 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
325 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
326 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
328 * New locales: bo_CN, bo_IN, shs_CA.
330 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
332 * Sorting rules for some Indian languages (Devanagari and Gujarati).
333 Implemented by Pravin Satpute.
335 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
337 * nscd caches now all timeouts for DNS entries
338 Implemented by Ulrich Drepper.
340 * nscd is more efficient and wakes up less often.
341 Implemented by Ulrich Drepper.
343 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
344 vdprintf, and obstack_vprintf.
345 Implemented by Jakub Jelinek.
347 * Faster memset for x86-64.
348 Implemented by Harsha Jagasia and H.J. Lu.
350 * Faster memcpy on x86.
351 Implemented by Ulrich Drepper.
353 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
354 Implemented by Ulrich Drepper.
356 * Faster sqrt and sqrtf implemention for some PPC variants.
357 Implemented by Stephen Munroe.
361 * The following bugs are resolved with this release:
363 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
364 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
365 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
366 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
367 5071, 5103, 5104, 5112, 5113, 5184, 5186
369 * More checking functions: fread, fread_unlocked, open*, mq_open.
370 Implemented by Jakub Jelinek and Ulrich Drepper.
372 * Extend fortification to C++. Implemented by Jakub Jelinek.
374 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
375 by not recognizing 'a' as a modifier when those specs are requested.
376 Implemented by Jakub Jelinek.
378 * PPC optimizations to math and string functions.
379 Implemented by Steven Munroe.
381 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
382 options to be passed. Implemented by Ulrich Drepper.
384 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
386 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
387 Implemented by Ulrich Drepper.
389 * Handle private futexes in the NPTL implementation.
390 Implemented by Jakub Jelinek and Ulrich Drepper.
392 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
393 Implemented by Roland McGrath and Ulrich Drepper.
395 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
397 * SHA-256 and SHA-512 based password encryption.
398 Implemented by Ulrich Drepper.
400 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
401 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
404 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
405 Implemented by Ulrich Drepper.
409 * The following bugs are resolved with this release:
411 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
412 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
413 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
414 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
415 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
416 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
417 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
420 * New Linux interfaces: epoll_pwait, sched_getcpu.
422 * New generic interfaces: strerror_l.
424 * nscd can now cache the services database. Implemented by Ulrich Drepper.
428 * The following bugs are resolved with this release:
430 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
431 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
432 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
433 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
434 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
435 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
436 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
437 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
438 3225, 3251, 3252, 3253, 3273
440 * For Linux, the sorting of addresses returned by getaddrinfo now also
441 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
442 Implemented by Ulrich Drepper.
444 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
445 Implemented by Ulrich Drepper.
447 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
449 * New iconv module for MIK. Contributed by Alexander Shopov.
451 * For sites with broken group and/or passwd database, the auto-propagate
452 option of nscd can prevent creating ID lookup entries from the results
453 of a name lookup and vice versa. This usually is no problem but some
454 site might have problems with the default behavior.
455 Implemented by Ulrich Drepper.
457 * Iterating over entire database in NIS can be slow. With the
458 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
459 to trade time for memory. The entire database will be read at once.
460 Implemented by Ulrich Drepper.
462 * The interfaces introduced in RFC 3542 have been implemented by
465 * Support for the new ELF hash table format was added by Ulrich Drepper.
467 * Support for priority inheritance mutexes added by Jakub Jelinek and
470 * Support for priority protected mutexes added by Jakub Jelinek.
472 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
473 or_IN, csb_PL, fy_NL, sr_ME.
477 * More overflow detection functions.
479 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
480 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
482 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
483 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
484 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
485 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
486 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
487 by Masahide Washizawa.
489 * It is now possible to install audit libraries for the dynamic linker using
490 LD_AUDIT. Implemented by Ulrich Drepper.
492 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
493 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
494 For a libc and libpthread that works well on Linux 2.4 kernels, we
495 recommend using the stable 2.3 branch.
497 * The new function open_wmemstream acts like open_memstream,
498 but uses a wchar_t wide character buffer.
500 * The new function ppoll is an improved version of poll, similar to pselect.
502 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
503 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
504 renameat, unlinkat, linkat, symlinkat, readlinkat.
506 * New Linux kernel system calls: unshare,
507 inotify_init, inotify_add_watch, inotify_rm_watch.
509 * The euidaccess function is now also known by the alias eaccess,
510 for compatibility with some other systems.
512 * Timezone data updated to 2006b version.
516 * The following bugs are resolved with this release:
518 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
519 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
520 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
521 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
522 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
523 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
525 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
527 * As of this release, GCC 4 can be used to compile the C Library.
529 * Timezone data updated to 2005m version.
533 * The following bugs are resolved with this release:
535 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
536 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
537 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
538 777, 787, 821, 822, 823, 825
540 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
544 * Support for RFC 3678. Real implementations exist only for Linux so far.
545 Implemented by Ulrich Drepper.
547 * nscd can now cache entries persistently. Expiring entries are reloaded.
548 For speedups the cache can be shared in memory with client processes.
549 Implemented by Ulrich Drepper.
551 * nscd can now perform SELinux checks.
552 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
554 * getaddrinfo queries are now cached. Canonical name lookup is performed
556 Implemented by Ulrich Drepper.
558 * The nothrow function attribute is used when headers are used by gcc when
559 compiling C code. This can avoid significant amounts of exception
562 * The malloc functions perform more error checking and are stricter when
563 it comes to reacting on errors. The default action is to terminate
564 the process after showing an error message. Implemented by Ulrich Drepper.
566 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
567 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
569 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
570 namespaces using the new function dlmopen(). This feature is of course,
571 like most other dynamic loading functionality, not available in statically
572 linked applications. Implemented by Ulrich Drepper.
574 * Low-overhead boundary checking variants of string and some stdio functions
575 were added. These are to be used in conjunction with a gcc patch by
576 Jakub Jelinek which adds calls to these functions if possible.
577 Implemented by Jakub Jelinek and Ulrich Drepper.
579 * Old code for several operating systems and machine architectures that
580 have not been in working condition in a long time have been removed from
581 the main source tree maintained by the GNU C Library's maintainers.
582 These files are now reside in the separate `ports' source module
583 that is usable as an add-on when building the library.
587 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
588 interrogate the dynamic linker, compatible with the Solaris interface.
590 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
591 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
593 * getifaddrs now uses the netlink interface on Linux to get its information.
594 Implemented by Thorsten Kukuk.
596 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
597 Implemented by Ulrich Drepper.
599 * support for non-executable stacks on x86 has been added. Changes mostly
602 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
605 * getaddrinfo now performs destination address selection according to
610 * Thread-safe interfaces for many functions that access locale data
611 were added in version 2.3, but these features were omitted from NEWS.
612 Many functions have variants with an `_l' suffix that take a `locale_t'
613 object as a parameter rather than consulting the current locale.
614 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
615 create and maintain `locale_t' objects. Additionally, the new function
616 `uselocale' sets "the current locale" (as used by functions not so
617 parameterized) set for an individual thread. These features were added
618 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
620 * The functions getresuid, getresgid, setresuid, and setresgid, which
621 have long been available on Linux, are now declared in <unistd.h>
622 and are now also available on the Hurd.
624 * ELF thread-local storage support (TLS) now works on x86-64.
626 * The new dynamic string token $LIB is expanded in shared library names.
627 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
629 * Aldy Hernandez contributed complete software floating point support for
630 PowerPC machines with no FPU.
632 * fexecve is implemented on Linux.
634 * The `btowc' function should work at least twice as fast due to
635 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
637 * With approriate thread add-ons cancelable functions are now implemented
638 in libc.so as well. No need to call the function in libpthread. This
639 change allowed to finally disable the incorrect and expensive handling
640 of weak definition in ld.so.
642 * Yet more PLT entries in libc.so have been removed. We finally arrived
643 at the bare minimum. Startup times improved appropriately.
645 * Support for the new Linux/x86 system call interface was added. The
646 AT_SYSINFO auxiliary vector entry is recognized and handled.
650 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
653 * iconv (the program and the interface) now accepts empty names (excluding
654 options like //TRANSLIT) to mean "use charset of current locale".
656 * localedef can now transliterate characters in strings which are not in
657 the provided charmap. The information from the input locale is used.
659 * Prelinking support was added for ELF targets. This requires additional
660 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
662 * Read-only stdio streams now use mmap to speed up operation by eliminating
663 copying and buffer underflows. To use add 'm' to the mode string of
664 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
666 * The malloc functions were completely rewritten by Wolfram Gloger based
667 on Doug Lea's malloc-2.7.0.c.
669 * Isamu Hasegawa contributed a completely new and POSIX-conformant
670 implementation of regex.
672 * Bruno Haible upgraded the iconv and locale implementation to support
675 * Contents of the LC_* and LANG environment variables in the CEN style are
676 not recognized anymore. It never was used. Change by Ulrich Drepper.
678 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
679 thread-local storage (TLS) ABI on some platforms.
680 Changes by Ulrich Drepper. SH support by Kaz Kojima.
682 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
683 EUC-JISX0213, and TSCII.
685 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
686 BSD-compatible interface for getting all network interface addresses.
687 Implementation for IPv4 by Roland McGrath.
689 * Loading of locale data is faster due to the introduction of a locale
690 archive. Implemented by Roland McGrath and Ulrich Drepper.
692 * Startup times are significantly reduced by not using exported functions
693 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
696 * Steven Munroe contributed a port to PowerPC64/Linux.
700 * The Hurd now uses the GNU libio implementation of stdio rather than the
701 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
703 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
704 with the same behavior as the Linux system call of the same name.
708 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
709 128-bit long double format.
711 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
712 IBM1161, and IBM1162 charsets.
714 * Andreas Jaeger contributed a port to x86-64/Linux.
716 * Peter Bruin contributed a port to PowerPC/Hurd.
718 * libc functions using I/O streams now can handle wide-oriented streams
721 * optimizations in the dynamic linker. Binaries created by recent binutils
722 versions start up quicker due to reduced time spent on relocations.
724 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
728 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
729 asinh, atanh, j0 for the 128-bit long double format.
731 * Bruno Haible updated all the code handling Unicode in some form to
734 * Speed of regex for single-byte locales is back to previous levels.
735 Patch by Isamu Hasegawa.
737 * Alpha, SPARC, and IA-64 now also using floating stacks.
739 * Startup time of internationalized applications greatly improved through
740 iconv cache. Use iconvconfig to generate the cache file.
741 Contributed by Ulrich Drepper.
743 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
744 severe performance problems. Patch by David Mosberger.
746 * The Hurd port got a lot more functionality like AIO, various stdio
747 extensions, etc. Mainly done by Roland McGrath.
749 * mtrace can now lookup symbols in shared libraries.
753 * Intel's IA-64 math library is largely integrated. It provides fast and
754 accurate implementatations for most basic and standard math functions
755 in float, double, and long double format.
757 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
758 and asin for the 96-bit long double format and asin, log, tan for the
759 128-bit long double format.
761 * The beginning of a last-bit accurate math library by IBM Haifa were added.
762 The basic double functions exist today. Contributed by Abraham Ziv
763 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
764 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
766 * An asynchronous name lookup library was added. The interface is designed
767 after POSIX AIO. The proposal was circulated beforehand to get comments.
768 No negative ones came in. Implemented by Ulrich Drepper.
770 * Port to S390/64bit contributed by Martin Schwidefsky
771 <schwidefsky@de.ibm.com>.
773 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
774 of functions for Linux/IA-64.
776 * The RPC code is now thread safe. Threads can now use the same service
777 of different services at the same time. Patch by Eric Norum
778 <eric.norum@usask.ca> with some help by Ulrich Drepper.
780 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
781 family of functions for Linux/S390.
783 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
784 of functions for Linux/x86.
786 * Port to Linux/CRIS contributed by Axis Communications.
790 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
791 we can now check for namespace violations and missing declarations. The
792 result is that almost all headers are now Unix-compliant (as defined in
793 the upcoming XPG6). The negative side is that some programs might need
794 corrections, too, if they depend on the incorrect form of the headers in
795 previous versions which defined too many symbols and included too many
798 * regex now handles multibyte character sets correctly.
799 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
801 * iconv (the program) does now conform to the upcoming XPG6 and handles
802 charmaps. Instead of the charset names the path of charmaps can be
803 provided and the conversion happens based on this data.
804 Contributed by Ulrich Drepper.
806 * The locale program now provides detailed information about the installed
811 only lists the names of the supported locales
815 provides details such as country, language, and codeset name.
816 Contributed by Ulrich Drepper.
820 * The gencat program now parses the input file according to the charset
821 selected by the LC_CTYPE category. This is important for stateful
822 character sets. To make generating catalogs easier there is a way
823 to overwrite the charset selected by the locale: before the first
824 message or $ quote line the catalog can contain a line like
828 to select the charset (ISO-8859-2 in this case).
830 Implemented by Shinya Hanataka and Ulrich Drepper.
832 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
833 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
834 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
836 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
837 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
839 * The LANGUAGE environment variable is now ignored unless the locale is
840 changed from the default "C" locale.
842 * The usual bug fixes.
846 * Greg McGary added runtime support for bounds checking using gcc's
847 new -fbounded-pointers option. ix86 target is complete. PowerPC
850 * Thorsten Kukuk added secure mode support to nscd.
852 * The Berkeley db libraries have been removed.
854 Related, the nss_db module is now in a separate package since it
855 obviously requires a database library being available.
857 * Wide character I/O streams implemented by Ulrich Drepper.
859 * Functions from the extended socket API added by Ulrich Drepper.
861 * Functions feenableexcept and fedisableexcept to control the
862 behaviour of individual exceptions have been added by Andreas Jaeger.
864 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
866 * The resolver code has been updated from bind 8.2.3-T5B which supports
867 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
870 This change could in some situations effect backward compatibility. Since
871 now `_res' is a thread-local instead of a global variable, modifying it
872 in one thread does not have any effect in other threads.
874 The resolver library was also extended to allow IPv6 as the transport
875 protocol for the requests. This work was done by Stig Venaas.
877 * Compatibility code for K&R C compilers has been removed from the
878 header files. A ISO C compiler is needed to use the library
879 (conforming to either C89 or C99 standard).
881 * Complete rewrite of the localedef program to support multibyte character
882 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
883 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
884 Implemented by Ulrich Drepper.
886 Bruno Haible significantly improved the generation and use of the data
887 structures for the wide character tables.
889 * Plural handling in gettext implemented by Ulrich Drepper.
891 * The utmp daemon has been removed.
893 * The port to MIPS-Linux has been finished by Andreas Jaeger.
895 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
898 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
900 * POSIX barriers implemented by Kaz Kylheku.
902 * POSIX spawn function family implemented by Ulrich Drepper.
904 * POSIX spinlocks are now available.
906 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
908 * the configure option --enable-kernel=X.Y.Z allows to strip out
909 compatibility for kernel versions before X.Y.Z. This is currently only
910 implemented for Linux.
912 * the sockaddr_in6 structure changed. The IPv6 working group added a new
913 field sin6_scope_id. This means that all programs using IPv6 should be
914 recompiled. Don't expect binary compatibility with previous glibc
917 * various conversion modules for IBM character sets contributed by
920 * IA-64 port by Jes Sorensen and HJ Lu.
922 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
923 Compiling the GNU C Library for Linux/ia64
924 ******************************************
926 Please refer to the file INSTALL in the same directory as you found
927 this file for general information about configuring and compiling
930 For general inquiries about glibc under Linux/ia64 please use the
931 following mailing list linux-ia64@linuxia64.org or one of the relevant
934 Recommended Tools for Compilation
935 =================================
937 In order for glibc-2.2 to build correctly on the ia64 you need at
938 least the following versions of the GNU tools (the :
940 * The Cygnus toolchain snapshot for the ia64 as of August 4
941 including the provided set of patches. It is however recommend
942 you use the October 24 toolchain snapshot or a more recent version.
944 OR alternatively you can try the following (the Cygnus toolchain is
945 the recommended solution):
947 * GCC and binutils, GAS and GNU LD out of CVS from
948 sources.redhat.com as of August 28, 2000 or later. The CVS tree
949 may require special patches to work properly on the ia64.
951 Configuring and compiling GNU Libc for Linux/ia64
952 =================================================
954 The library requires Linux kernel version 2.4.0-test4-000728 or
955 later to funtion properly. Besides that it support for debug libraries
956 is currently untested. Hence the following options
957 are required for configuring the library:
959 --disable-debug --enable-kernel=2.4.0
961 It is also important that you make sure the library picks up the
962 appropriate kernel header files, if you do not have recent enough
963 kernel headers in /usr/src/linux/include, you should use the
964 --with-headers=<path> option to specify the location.
966 As an example I personally use the following options to configure
971 --enable-kernel=2.4.0
975 --with-headers=/home/jes/linux/include
980 Jes Sorensen <jes@linuxcare.com>,
982 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
996 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
998 * New xdr functions are added; some rpc functions are now 64bit clean.
1000 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1002 * Fixed known incompatibilities with glibc 2.0.
1004 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1006 * Optimized a number of functions (especially the ELF dynamic loader).
1008 * Update timezone data files.
1010 * lots of charmaps corrections
1012 * some new locale definitions and charmaps
1017 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1018 conform to POSIX member type requirements. Symbol versions have been
1019 adjusted as needed within the library, and for direct use by applications,
1020 but there is potential for problems if third-party libraries use
1021 struct timeval as part of their interface. This does not present
1022 a problem for X and other "essential" system libraries.
1024 * An additional locale model to support C++ Standard Library locale
1025 model and probably more was implemented by Ulrich Drepper.
1027 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1030 * Miles Bader provided the `argp' function family to support hierachical
1031 command line argument parsing, layered on top of getopt.
1033 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1035 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1038 * scanf recognizes the %a and %A format for scanning floating point numbers.
1040 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1041 information and interfaces for the available integer types.
1043 * about 130 new math functions were added to implement the ISO C9x math
1046 * the new header <complex.h> contains definitions of the complex math
1047 functions from ISO C 9X.
1049 * the new header <tgmath.h> defines generic macros to use complex or
1050 real valued functions.
1052 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1054 * Andreas Jaeger provided a test suite for the math library.
1056 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1058 * Ulrich Drepper added character set conversion functions (iconv).
1060 * Optimized string functions have been added.
1062 * The localedata addon is now part of glibc.
1064 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1066 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1067 daemon for NSS (nscd).
1069 Missing a better place here are some numbers on improvements. Under
1070 Linux 2.1.125 un-tar-ing the kernel sources takes
1074 using local files 12.19s 6.88s 22.91s
1076 using NIS 13.92s 8.91s 26.34s
1078 using NIS & nscd 10.37s 7.34s 25.30s
1080 using NIS+ 27.57s 30.37s 640.46s
1082 using NIS+ & nscd 10.25s 7.83s 26.51s
1084 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1086 Keep in mind that non-namelookup related operations dominate above times.
1087 It was just a common complain that using NIS+ unpacking the kernel is
1090 [1] The old nscd implementation is not available anymore since it was
1091 distributed with glibc up to version 2.0.98 and thus is now replaced.
1093 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1095 * Mark Kettenis provided a Hesiod NSS module.
1097 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1098 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1100 * rcmd can now handle netgroups (Dick Streefland).
1102 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1105 * Support for the IPv6 protocol has been added to the socket API, as per the
1106 latest draft standards.
1108 * Support for Linux 2.2 has been added.
1110 * Interface changes relative to the latest 2.0.x release:
1111 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1112 addseverity NEW: Unix98
1113 alphasort64 NEW: LFS
1114 argp_err_exit_status NEW: argp, GNU ext
1115 argp_error NEW: argp, GNU ext
1116 argp_failure NEW: argp, GNU ext
1117 argp_help NEW: argp, GNU ext
1118 argp_parse NEW: argp, GNU ext
1119 argp_program_bug_address NEW: argp, GNU ext
1120 argp_program_version NEW: argp, GNU ext
1121 argp_program_version_hook NEW: argp, GNU ext
1122 argp_state_help NEW: argp, GNU ext
1123 argp_usage NEW: argp, GNU ext
1124 authdes_create NEW: Secure RPC
1125 authdes_getucred NEW: Secure RPC
1126 authdes_pk_create NEW: Secure RPC
1127 backtrace NEW: GNU ext.
1128 backtrace_symbols NEW: GNU ext.
1129 backtrace_symbols_fd NEW: GNU ext.
1131 cacosf NEW: ISO C 9x
1132 cacosh NEW: ISO C 9x
1133 cacoshf NEW: ISO C 9x
1134 cacoshl NEW: ISO C 9x
1135 cacosl NEW: ISO C 9x
1142 casinf NEW: ISO C 9x
1143 casinh NEW: ISO C 9x
1144 casinhf NEW: ISO C 9x
1145 casinhl NEW: ISO C 9x
1146 casinl NEW: ISO C 9x
1148 catanf NEW: ISO C 9x
1149 catanh NEW: ISO C 9x
1150 catanhf NEW: ISO C 9x
1151 catanhl NEW: ISO C 9x
1152 catanl NEW: ISO C 9x
1153 cbc_crypt NEW: Secure RPC
1157 ccoshf NEW: ISO C 9x
1158 ccoshl NEW: ISO C 9x
1164 cimagf NEW: ISO C 9x
1165 cimagl NEW: ISO C 9x
1166 clearerr_locked REMOVED
1167 clntunix_create NEW: sunrpc ext
1169 clog10 NEW: ISO C 9x
1170 clog10f NEW: ISO C 9x
1171 clog10l NEW: ISO C 9x
1181 cprojf NEW: ISO C 9x
1182 cprojl NEW: ISO C 9x
1184 crealf NEW: ISO C 9x
1185 creall NEW: ISO C 9x
1190 csinhf NEW: ISO C 9x
1191 csinhl NEW: ISO C 9x
1194 csqrtf NEW: ISO C 9x
1195 csqrtl NEW: ISO C 9x
1199 ctanhf NEW: ISO C 9x
1200 ctanhl NEW: ISO C 9x
1202 des_setparity NEW: Secure RPC
1203 ecb_crypt NEW: Secure RPC
1204 endutxent NEW: Unix98
1206 exp10f NEW: ISO C 9x
1207 exp10l NEW: ISO C 9x
1211 fattach NEW: STREAMS
1212 fdetach NEW: STREAMS
1216 feclearexcept NEW: ISO C 9x
1217 fegetenv NEW: ISO C 9x
1218 fegetexceptflag NEW: ISO C 9x
1219 fegetround NEW: ISO C 9x
1220 feholdexcept NEW: ISO C 9x
1222 feraiseexcept NEW: ISO C 9x
1223 ferror_locked REMOVED
1224 fesetenv NEW: ISO C 9x
1225 fesetexceptflag NEW: ISO C 9x
1226 fesetround NEW: ISO C 9x
1227 fetestexcept NEW: ISO C 9x
1228 feupdateenv NEW: ISO C 9x
1229 fflush_locked REMOVED
1233 fgets_unlocked NEW: GNU ext.
1234 fileno_locked REMOVED
1246 fputc_locked REMOVED
1247 fputs_unlocked NEW: GNU ext.
1248 fread_unlocked NEW: GNU ext.
1253 fstatvfs NEW: Unix98
1257 ftruncate64 NEW: LFS
1259 fwrite_unlocked NEW: GNU ext.
1260 gai_strerror NEW: IPv6
1264 getchar_locked REMOVED
1266 getdate_err NEW: Unix98
1267 getdate_r NEW: GNU ext.
1269 getnameinfo NEW: IPv6
1270 getnetname NEW: Secure RPC
1271 getpmsg NEW: STREAMS
1272 getpt NEW: Unix98 PTY
1273 getrlimit64 NEW: LFS
1274 getutxent NEW: Unix98
1275 getutxid NEW: Unix98
1276 getutxline NEW: Unix98
1277 glob64 NEW: GNU ext.
1278 globfree64 NEW: GNU ext.
1279 gnu_get_libc_release NEW: GNU ext.
1280 gnu_get_libc_version NEW: GNU ext.
1281 grantpt NEW: Unix98 PTY
1282 host2netname NEW: Secure RPC
1284 iconv_close NEW: iconv
1285 iconv_open NEW: iconv
1286 if_freenameindex NEW: IPv6
1287 if_indextoname NEW: IPv6
1288 if_nameindex NEW: IPv6
1289 if_nametoindex NEW: IPv6
1290 in6addr_any NEW: IPv6
1291 in6addr_loopback NEW: IPv6
1292 inet6_isipv4mapped NEW: IPv6
1293 isastream NEW: STREAMS
1294 iswblank NEW: GNU ext.
1295 key_decryptsession NEW: Secure RPC
1296 key_decryptsession_pk NEW: Secure RPC
1297 key_encryptsession NEW: Secure RPC
1298 key_encryptsession_pk NEW: Secure RPC
1299 key_gendes NEW: Secure RPC
1300 key_get_conv NEW: Secure RPC
1301 key_secretkey_is_set NEW: Secure RPC
1302 key_setnet NEW: Secure RPC
1303 key_setsecret NEW: Secure RPC
1304 llrint NEW: ISO C 9x
1305 llrintf NEW: ISO C 9x
1306 llrintl NEW: ISO C 9x
1307 llround NEW: ISO C 9x
1308 llroundf NEW: ISO C 9x
1309 llroundl NEW: ISO C 9x
1314 lrintf NEW: ISO C 9x
1315 lrintl NEW: ISO C 9x
1316 lround NEW: ISO C 9x
1317 lroundf NEW: ISO C 9x
1318 lroundl NEW: ISO C 9x
1320 makecontext NEW: Unix98
1321 mempcpy NEW: GNU ext.
1324 modify_ldt NEW: kernel
1328 nearbyint NEW: ISO C 9x
1329 nearbyintf NEW: ISO C 9x
1330 nearbyintl NEW: ISO C 9x
1331 netname2host NEW: Secure RPC
1332 netname2user NEW: Secure RPC
1333 nexttoward NEW: ISO C 9x
1334 nexttowardf NEW: ISO C 9x
1335 nexttowardl NEW: ISO C 9x
1339 passwd2des NEW: Secure RPC
1341 pow10f NEW: GNU ext.
1342 pow10l NEW: GNU ext.
1345 printf_size NEW: GNU ext.
1346 printf_size_info NEW: GNU ext.
1347 profil_counter REMOVED
1348 pthread_mutexattr_getkind_np REPLACED
1349 pthread_mutexattr_setkind_np REPLACED
1350 ptsname NEW: Unix98 PTY
1351 ptsname_r NEW: Unix98 PTY
1353 putchar_locked REMOVED
1354 putgrent NEW: GNU ext.
1356 putpmsg NEW: STREAMS
1357 pututxline NEW: Unix98
1361 readdir64_r NEW: LFS
1362 remquo NEW: ISO C 9x
1363 remquof NEW: ISO C 9x
1364 remquol NEW: ISO C 9x
1366 roundf NEW: ISO C 9x
1367 roundl NEW: ISO C 9x
1369 scalbln NEW: ISO C 9x
1370 scalblnf NEW: ISO C 9x
1371 scalblnl NEW: ISO C 9x
1373 sendfile NEW: kernel
1374 setcontext NEW: Unix98
1375 setrlimit64 NEW: LFS
1376 setutxent NEW: Unix98
1378 sigignore NEW: Unix98
1379 sigqueue NEW: POSIX.1b
1380 sigrelse NEW: Unix98
1381 sigset NEW: POSIX.1b
1382 sigtimedwait NEW: POSIX.1b
1383 sigwaitinfo NEW: POSIX.1b
1384 sincos NEW: GNU ext.
1385 sincosf NEW: GNU ext.
1386 sincosl NEW: GNU ext.
1390 strcasestr NEW: GNU ext.
1391 strtoimax NEW: ISO C 9x
1392 strtoumax NEW: ISO C 9x
1393 strverscmp NEW: GNU ext.
1394 svcauthdes_stats NEW: Secure RPC
1395 svcunix_create NEW: sunrpc etx
1396 svcunixfd_create NEW: sunrpc ext
1397 swapcontext NEW: Unix98
1398 tcgetsid NEW: Unix98 PTY
1399 tdestroy NEW: GNU ext.
1400 tgamma NEW: ISO C 9x
1401 tgammaf NEW: ISO C 9x
1402 tgammal NEW: ISO C 9x
1406 truncf NEW: ISO C 9x
1407 truncl NEW: ISO C 9x
1409 unlockpt NEW: Unix98 PTY
1410 updwtmpx NEW: Unix98
1411 user2netname NEW: Secure RPC
1412 utmpxname NEW: Unix98
1413 versionsort NEW: GNU ext.
1414 versionsort64 NEW: GNU ext.
1416 wcscasecmp NEW: GNU ext.
1417 wcsncasecmp NEW: GNU ext.
1418 wcsnlen NEW: GNU ext.
1419 wcstoimax NEW: ISO C 9x
1420 wcstoll NEW: ISO C 9x
1421 wcstoull NEW: ISO C 9x
1422 wcstoumax NEW: ISO C 9x
1424 wordexp NEW: POSIX.2
1425 wordfree NEW: POSIX.2
1426 write_profiling REMOVED
1427 xdecrypt NEW: Secure RPC
1428 xdr_authdes_cred NEW: Secure RPC
1429 xdr_authdes_verf NEW: Secure RPC
1430 xdr_cryptkeyarg NEW: Secure RPC
1431 xdr_cryptkeyarg2 NEW: Secure RPC
1432 xdr_cryptkeyres NEW: Secure RPC
1433 xdr_getcredres NEW: Secure RPC
1434 xdr_key_netstarg NEW: Secure RPC
1435 xdr_key_netstres NEW: Secure RPC
1436 xdr_keybuf NEW: Secure RPC
1437 xdr_keystatus NEW: Secure RPC
1438 xdr_netnamestr NEW: Secure RPC
1439 xdr_sizeof NEW: Secure RPC
1440 xdr_unixcred NEW: sunrpc ext
1441 xencrypt NEW: Secure RPC
1442 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1453 * inet_ntoa is thread-safe
1455 * updwtmp is moved from libutil to libc
1457 * rewrite of cbrt function
1459 * update of timezone data
1473 * add atoll function
1475 * fix complex problems in Berkeley DB code
1477 * fix math functions
1481 * fixed lots of header problems (especially Linux/GNU specific)
1483 * dynamic loader preserves all registers
1485 * Roland McGrath provided support for handling of auxiliary objects in
1486 the ELF dynamic loader.
1488 * support for parallel builds is improved
1492 * GNU extensions are no longer declared by default. To enable them you
1493 must define the macro `_GNU_SOURCE' in your program or compile with
1496 * The library has changed from using GNU ld symbol aliases to using weak
1497 symbols where available. The ELF object file format supports weak
1498 symbols; GNU ld also supports weak symbols in the a.out format. (There
1499 is also now support for other GNU ld extensions in ELF. Use the
1500 `--with-elf' option to configure to indicate you have ELF, and
1501 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1502 of many files which contained only symbol aliases, reducing the size of
1503 the source and the compiled library; many other files were renamed to
1504 less cryptic names previously occupied by the symbol alias files.
1505 There is a new header file <elf.h> for programs which operate on
1506 files in the ELF format.
1508 * Converted to Autoconf version 2, so `configure' has more options.
1509 Run `configure --help' to see the details.
1511 * The library can now be configured to build profiling, highly-optimized
1512 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1513 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1514 `configure' enable building these extra libraries. The shared library is
1515 built by default when using both ELF and GNU ld. When shared libraries
1516 are enabled, the new library `-ldl' is available for arbitrary run-time
1517 loading of shared objects; its interface is defined in <dlfcn.h>. The
1518 new header file <link.h> gives access to the internals of the run-time
1519 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1520 application of same name on other systems and it provides information
1521 about dynamically linked binaries.
1523 * The C library now provides the run-time support code for profiling
1524 executables compiled with `-pg'. Programs can control the profiling code
1525 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1526 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1527 the support for this file format was contributed by David Mosberger-Tang.
1529 * The math code has been replaced with a math library based on fdlibm from
1530 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1531 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1532 functions. The math functions now reside in a separate library, so
1533 programs using them will need to use `-lm' their linking commands.
1535 * John C. Bowman contributed optimized ix87 assembler inline functions.
1537 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1538 mechanism similar to that found in Solaris 2. This is now used for the
1539 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1540 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1541 file controls what services are used for each individual database. This
1542 works by loading shared libraries with names specified in `nsswitch.conf',
1543 so service modules can be changed or added at any time without even
1544 relinking any program. Currently there are the file, db, and NIS based
1545 NSS services available.
1547 * The new functions `strtoq' and `strtouq' parse integer values from
1548 strings, like `strtol' and `strtoul', but they return `long long int' and
1549 `unsigned long long int' values, respectively (64-bit quantities).
1551 * The new functions `strtof' and `strtold' parse floating-point values from
1552 strings, like `strtod', but they return `float' and `long double' values,
1553 respectively (on some machines `double' and `long double' are the same).
1555 * Ulrich Drepper has contributed new implementations of the floating-point
1556 printing and reading code used in the `printf' family of functions and
1557 `strtod', `strtof', and `strtold'. These new functions are perfectly
1558 accurate, and much faster than the old ones.
1560 * The implementation of the POSIX locale model was completely rewritten by
1561 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1562 to compile the POSIX locale definition.
1564 * The former dummy implementations of the strcoll and strxfrm function are
1565 now replaced by fully functional code contributed by Ulrich Drepper. The
1566 collation information comes from the POSIX locale definitions.
1568 * The new header <langinfo.h> defines an interface for accessing
1569 various locale-dependent data (using the locale chosen with `setlocale').
1571 * Ulrich Drepper has contributed a new suite of functions for operation on
1572 wide-character and multibyte-character strings, in <wchar.h>;
1573 and classification and case conversion of wide characters, in <wctype.h>.
1574 These new functions are conforming to the ISO C, Amendement 1 specification.
1576 * There is now a second implementation of the standard I/O library available.
1577 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1578 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1580 * You can now use positional parameter specifications in format strings
1581 for the `printf' and `scanf' families of functions. For example,
1582 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1583 ``Number 6, Mr Jones''. This is mainly useful when providing different
1584 format strings for different languages, whose grammars may dictate
1585 different orderings of the values being printed. To support this
1586 feature, the interface for `register_printf_handler' has changed; see
1587 the header file <printf.h> for details.
1589 * The `printf' and `scanf' families of functions now understand a new
1590 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1591 to group numbers as indicated by the locale; for `scanf' and friends, this
1592 says to accept as valid only a number with all the proper grouping
1593 separators in the right places. In the default "C" locale, numbers are
1594 not grouped; but locales for specific countries will define the usual
1595 conventions (i.e. separate thousands with `,' in the US locale).
1597 * The pgrp functions have been regularized, slightly incompatibly but much
1598 less confusingly. The core functions are now `getpgid' and `setpgid',
1599 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1600 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1601 provided for compatibility. There is no longer an incompatible `getpgrp'
1602 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1604 * The new header file <fts.h> and suite of functions simplify programs that
1605 operate on directory trees. This code comes from 4.4 BSD.
1607 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1608 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1609 NSS scheme used in glibc.
1611 * There is a new malloc debugging hook `__memalign_hook'.
1613 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1614 `unsigned int' in <sys/types.h>. These are for compatibility only and
1615 their use is discouraged.
1617 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1618 done differently, so that it works even without GNU ld.
1620 * New function `euidaccess' checks allowed access to a file like `access',
1621 but using the effective IDs instead of the real IDs.
1623 * The time zone data files have been updated for the latest and greatest
1624 local time conventions of the countries of the world.
1626 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1629 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1630 for formatting floating-point numbers. They are provided only for
1631 compatibility; new programs should use `sprintf' instead. There are
1632 also equivalent function for the `long double' floating-point type and
1633 all functions also exist in a reentrant form.
1635 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1636 functions for maintaining the login-record files (primarily of use to
1637 system programs such as `login'), and convenient functions for
1638 allocating and initializing a pseudo-terminal (pty) device.
1640 * Ulrich Drepper has contributed new support for System V style
1641 shared memory and IPC on systems that support it.
1643 * Ulrich Drepper has contributed several miscellaneous new functions found
1644 in System V: The `hsearch' family of functions provide an effective
1645 implementation of hash tables; `a64l' and `l64a' provide a very simple
1646 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1649 * Ulrich Drepper has contributed new reentrant counterparts for the
1650 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1652 * Ulrich Drepper has contributed new, highly-optimized versions of several
1653 string functions for the i486/Pentium family of processors.
1655 * Ulrich Drepper has updated the Linux-specific code, based largely
1656 on work done in Hongjiu Lu's version of GNU libc for Linux.
1657 The GNU library now supports Linux versions 2.0.10 and later,
1658 using the ELF object file format (i[3456]86-*-linux).
1660 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1662 * David Mosberger-Tang and Richard Henderson have ported the C library
1663 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1664 dynamic linking support for ELF/Alpha.
1666 * Richard Henderson contributed several Alpha optimized assembler function
1667 for arithmetic and string handling.
1669 * Ulrich Drepper has contributed a new set of message catalog functions to
1670 support multiple languages using the <libintl.h> interface, for use with
1671 his new package GNU gettext. Translation volunteers have contributed
1672 catalogs of the library's messages in Spanish, German, and Korean.
1674 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1675 program and the `catgets' function for reading the catalog files it
1676 creates. (The <libintl.h> interface is preferred; we include the
1677 <nl_types.h> interface using `catgets' only for source compatibility with
1678 programs already written to use it.)
1680 * New header file <values.h> gives SVID-compatible names for <limits.h>
1683 * Various new macros, declarations, and small header files for compatibility
1686 * New function `group_member' is a convenient way to check if a process has
1687 a given effective group ID.
1689 * When using GCC 2.7 and later, the socket functions are now declared in a
1690 special way so that passing an argument of type `struct sockaddr_in *',
1691 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1692 `struct sockaddr *' type, does not generate a type-clash warning.
1694 * New function `error' declared in header file <error.h> is a convenient
1695 function for printing error messages and optionally exiting; this is the
1696 canonical function used in GNU programs. The new functions `err', `warn',
1697 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1698 doing the same thing.
1700 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1701 POSIX.2 `glob' function to do ~ and {...} expansion.
1703 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1704 `clearenv' which is used in POSIX.9 is also available.
1706 * New function `getsid' returns session ID number on systems that support it.
1708 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1709 files <db.h> and <mpool.h> provide a rich set of functions for several
1710 types of simple databases stored in memory and in files, and <ndbm.h> is
1711 an old `ndbm'-compatible interface using the `db' functions. Link with
1712 `-ldb' to get these functions.
1714 * New macro `strdupa' copies a string like `strdup', but uses local stack
1715 space from `alloca' instead of dynamic heap space from `malloc'.
1717 * New function `strnlen' is like `strlen' but searches only a given maximum
1718 number of characters for the null terminator. `stpncpy', `strndup' and
1719 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1722 * New function `statfs' in header <sys/statfs.h>.
1724 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1725 provide convenient functions for operating on blocks of null-terminated
1728 * A new suite of functions in <utmp.h> handle all the details of reading
1729 and writing the utmp file.
1731 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1734 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1735 completely POSIX compliant and also implemented the extended functionality
1736 to handle alternate digit representation and alternate era date formats.
1738 * Ulrich Drepper provided an implementation of the `strptime' function
1739 defined in XPG4.2 which transforms a string into a `struct tm' value.
1741 * Paul Eggert provided the tzselect shell script as part of the timezone
1742 code. The shell script makes it easy to select the correct timezone
1745 * The implementation of the malloc family of functions is completely replaced
1746 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1747 The implementation uses the mmap function (if available) and it is
1748 optimized for the use in multi threaded programs.
1750 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1751 functions. This new functionality is usable by specifying a special
1752 salt string and it is compatible with implementation on *BSD systems.
1754 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1755 `getsubopt' to handle second level command line options, `bsd_signal'
1756 to access BSD style `signal' functionality, the obsolete `regexp' style
1759 * the `lchown' function is available on system which support this
1762 * The implementation of the shadow password handling function was contributed
1765 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1767 * POSIX.1g support was added. The <sys/select.h> header is available,
1768 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1769 implementation of `getaddrinfo'.
1773 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1775 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1776 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1778 * The new function `daemon' from 4.4 BSD is useful for server programs that
1779 want to put themselves in the background.
1781 * Joel Sherrill has contributed support for several standalone boards that
1782 run without an operating system.
1784 * `printf', `scanf' and friends now accept a `q' type modifier for long
1785 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1787 * All of the code taken from BSD (notably most of the math and networking
1788 routines) has been updated from the BSD 4.4-Lite release.
1790 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1792 * The new functions `getdomainname' and `setdomainname' fetch or change the
1793 YP/NIS domain name. These are system calls which exist on systems which
1796 * The time zone data files have been updated for the latest international
1799 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1800 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1804 * The C library now includes support for Sun RPC, from Sun's free
1805 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1806 are included. (There is still no support for YP.)
1808 * Tom Quinn has contributed a port of the C library to SGI machines running
1809 Irix 4 (mips-sgi-irix4).
1811 * The new `lockf' function is a simplified interface to the locking
1812 facilities of `fcntl', included for compatibility.
1814 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1816 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1818 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1821 * The error message printed by `assert' for a failed assertion now includes
1822 the name of the program (if using GNU ld) and the name of the calling
1823 function (with versions of GCC that support this).
1825 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1827 * The library now includes the <sys/mman.h> header file and memory
1828 management functions `mmap', `munmap', `mprotect', `msync', and
1829 `madvise', on systems that support those facilities.
1831 * The interface for `mcheck' has changed slightly: the function called to
1832 abort the program when an allocation inconsistency is detected now takes
1833 an argument that indicates the type of failure. The new function
1834 `mprobe' lets you request a consistency check for a particular block at
1835 any time (checks are normally done only when you call `free' or `realloc'
1838 * It is now possible to easily cross-compile the C library, building on one
1839 system a library to run on another machine and/or operating system. All
1840 you need to do is set the variable `HOST_CC' in `configparms' to the
1841 native compiler for programs to run on the machine you are building on (a
1842 few generator programs are used on Unix systems); set `CC' to the
1845 * The new function `fexecve' (only implemented on the GNU system) executes
1846 a program file given a file descriptor already open on the file.
1850 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1851 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1853 * You can set the variable `libprefix' in `configparms' to specify a prefix
1854 to be prepended to installed library files; this makes it easy to install
1855 the GNU C library to be linked as `-lgnuc' or whatever.
1857 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1858 copies a limited number of characters from a string, and returns the
1859 address of the last character written.
1861 * You no longer need to check for whether the installed `stddef.h' is
1862 compatible with the GNU C library. configure now checks for you.
1864 * You can now define a per-stream `fileno' function to convert the
1865 stream's cookie into an integral file descriptor.
1867 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1868 allocates zero bytes of storage, and returns a unique pointer which
1869 you can pass to `realloc' or `free'. The behavior is undefined if
1870 you dereference this pointer.
1872 * The C library now runs on Sony NEWS m68k machines running either
1873 NewsOS 3 or NewsOS 4.
1875 * The new `syscall' function is a system-dependent primitive function
1876 for invoking system calls. It has the canonical behavior on Unix
1877 systems, including unreliable return values for some calls (such as
1878 `pipe', `fork' and `getppid').
1880 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1881 to `EAGAIN', which is the preferred name. On systems whose kernels
1882 use two distinct codes, the C library now translates EWOULDBLOCK to
1883 EAGAIN in every system call function.
1887 * The GNU C Library Reference Manual is now distributed with the library.
1888 `make dvi' will produce a DVI file of the printed manual.
1889 `make info' will produce Info files that you can read on line using C-h i
1890 in Emacs or the `info' program.
1891 Please send comments on the manual to bug-glibc-manual@gnu.org.
1893 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1895 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1897 * Jason Merrill has contributed a port to the Sequent Symmetry running
1898 Dynix version 3 (i386-sequent-dynix).
1900 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1901 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1903 * New function `memory_warnings' lets you arrange to get warnings when
1904 malloc is running out of memory to allocate, like Emacs gives you.
1906 * The C library now contains the relocating allocator used in Emacs 19 for
1907 its editing buffers. This allocator (ralloc) minimizes allocation
1908 overhead and fragmentation by moving allocated regions around whenever it
1909 needs to. You always refer to a ralloc'd region with a "handle" (a
1910 pointer to a pointer--an object of type `void **').
1912 * There is a new `printf' format: `%m' gives you the string corresponding
1913 to the error code in `errno'.
1915 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1916 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1917 pass, the `a' modifier says to fill in a `char **' you pass with a
1920 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1921 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1922 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1924 * `mkstemp' is a traditional Unix function to atomically create and open a
1925 uniquely-named temporary file.
1929 * The standard location for the file that says what the local timezone is
1930 has changed again. It is now `/usr/local/etc/localtime' (or more
1931 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1933 * The distribution no longer contains any files with names longer than 14
1936 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1937 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1939 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1943 * The configuration process has changed quite a bit. The `configure'
1944 script is now used just like the configuration scripts for other GNU
1945 packages. The `sysdeps' directory hierarchy is much rearranged.
1946 The file `INSTALL' explains the new scheme in detail.
1948 * The header files no longer need to be processed into ANSI C and
1949 traditional C versions. There is just one set of files to install, and
1950 it will work with ANSI or old C compilers (including `gcc -traditional').
1952 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1953 MIPS DECStation running Ultrix 4.
1955 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1956 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1957 made itself into a shared library.
1959 * Yet further improved support for the i386, running 4.3 BSD-like systems
1960 (such as Mach 3 with the Unix single-server), or System V.
1962 * New function `strncasecmp' to do case-insensitive string comparison
1963 with limited length.
1965 * New function `strsep' is a reentrant alternative to `strtok'.
1967 * New functions `scandir' and `alphasort' for searching directories.
1969 * New function `setenv' is a better interface to `putenv'.
1971 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1972 function for traversing a directory tree.
1974 * The GNU obstack package is now also part of the C library.
1975 The new function `open_obstack_stream' creates a stdio stream that
1976 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1977 formatted output directly to an obstack.
1979 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1980 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1982 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1984 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1985 things to your strings.
1987 * There are some new test programs: test-fseek, testmb, and testrand.
1989 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
1990 These ports are not finished, but are a good starting place for really
1991 supporting those systems.
1993 * `/etc/localtime' is now the standard location for the file that says what
1994 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
1995 This follows the general principle that `/etc' is the place for all local
1996 configuration files.
1998 * The C library header files now use `extern "C"' when used by the C++
1999 compiler, so the C library should now work with C++ code.
2001 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2002 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2005 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2006 function which uses the `merge sort' algorithm, and is said to be
2007 significantly faster than the old GNU `qsort' function. Merge sort is
2008 now the standard `qsort' function. The new algorithm can require a lot
2009 of temporary storage; so, the old sorting function is called when the
2010 required storage is not available.
2012 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2013 provides the Unix `crypt' function, plus some other entry points.
2015 * The code and header files taken from 4.4 BSD have been updated with the
2016 latest files released from Berkeley.
2018 ----------------------------------------------------------------------
2019 Copyright information:
2021 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2023 Permission is granted to anyone to make or distribute verbatim copies
2024 of this document as received, in any medium, provided that the
2025 copyright notice and this permission notice are preserved,
2026 thus giving the recipient permission to redistribute in turn.
2028 Permission is granted to distribute modified versions
2029 of this document, or of portions of it,
2030 under the above conditions, provided also that they
2031 carry prominent notices stating who last changed them.
2034 version-control: never
projects / platform / upstream / glibc.git / blob