1 GNU C Library NEWS -- history of user-visible changes. 2012-1-10
2 Copyright (C) 1992-2009, 2010, 2011, 2012 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sources.redhat.com/bugzilla/>
6 using `glibc' in the "product" field.
10 * The following bugs are resolved with this release:
12 13525, 13526, 13527, 13528, 13529, 13531, 13532, 13533, 13547, 13530,
13 13551, 13552, 13553, 13555, 13559
17 + define static_assert
21 + declare at_quick_exit and quick_exit also for ISO C11
23 + aligned_alloc. NB: The code is deliberately allows the size parameter
24 to not be a multiple of the alignment. This is a moronic requirement
25 in the standard but it is only a requirement on the caller, not the
30 + uchar.h support added
32 + CMPLX, CMPLXF, CMPLXL added
34 Implemented by Ulrich Drepper.
36 * Support for the IA-64 is removed and could live in ports.
38 * Remove support for anything but ELF binary format
40 * Checking versions of poll, ppoll added.
41 Implemented by Ulrich Drepper.
43 * More generic and 64-bit performance optimizations to math functions.
44 Implemented by Ulrich Drepper.
48 * The following bugs are resolved with this release:
50 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
51 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
52 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
53 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
54 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
55 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
56 13484, 13506, 13515, 13523, 13524, 13538, 13540
58 * New program pldd to list loaded object of a process
59 Implemented by Ulrich Drepper.
61 * Add nss_db support back to glibc. No more dependency on Berkeley db
62 and support for initgroups lookups.
63 Implemented by Ulrich Drepper.
65 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
68 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
71 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
73 Contributed by Liubov Dmitrieva.
75 * Optimized strchr and strrchr for SSE on x86-32.
76 Contributed by Liubov Dmitrieva.
78 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
79 for x86-64 and x86-32.
80 Contributed by Liubov Dmitrieva.
82 * New interfaces: scandirat, scandirat64
83 Implemented by Ulrich Drepper.
85 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
86 Implemented by Ulrich Drepper.
88 * nscd now also caches the netgroup database.
89 Implemented by Ulrich Drepper.
91 * Integrate libm with gcc's -ffinite-math-only option.
92 Implemented by Ulrich Drepper.
94 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
95 to math functions. Implemented by Ulrich Drepper.
97 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
98 Implemented by Ulrich Drepper.
100 * New Linux interfaces: process_vm_readv, process_vm_writev
102 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
103 Implemented by Ulrich Drepper.
105 * Optimized nearbyint and strcasecmp for PPC.
106 Implemented by Adhemerval Zanella.
108 * New locales: bho_IN, unm_US, es_CU, ta_LK
112 * The following bugs are resolved with this release:
114 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
115 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
116 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
117 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
118 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
119 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
120 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
121 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
122 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
123 12795, 12811, 12813, 12814, 12841
125 * The RPC implementation in libc is obsoleted. Old programs keep working
126 but new programs cannot be linked with the routines in libc anymore.
127 Programs in need of RPC functionality must be linked against TI-RPC.
128 The TI-RPC implementation is IPv6 enabled and there are other benefits.
130 Visible changes of this change include (obviously) the inability to link
131 programs using RPC functions without referencing the TI-RPC library and the
132 removal of the RPC headers from the glibc headers.
133 Implemented by Ulrich Drepper.
135 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
136 syncfs, setns, sendmmsg
138 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
139 yue_HK, lij_IT, mhr_RU
141 * New encodings: CP770, CP771, CP772, CP773, CP774
143 * New program sotruss to trace calls through PLTs
144 Implemented by Ulrich Drepper.
146 * The malloc hook implementation is marked deprecated and will be removed
147 from the default implementation in the next version. The design never
148 worked ever since the introduction of threads. Even programs which do
149 not create threads themselves can use multiple threads created internally.
153 * The following bugs are resolved with this release:
155 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
156 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
157 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
158 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
161 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
163 * POWER7 optimizations: memset, memcmp, strncmp
165 * New optimized string functions for x86-64: strnlen (SSE2),
166 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
167 Implemented by Ulrich Drepper.
171 * The following bugs are resolved with this release:
173 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
174 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
175 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
176 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
177 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
178 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
179 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
180 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
182 * New interfaces: pthread_getname_np, pthread_setname_np
184 * New Linux interface: recvmmsg
186 * STT_GNU_IFUNC implemented for Sparc by David Miller.
188 * The dynamic linker now recognizes supported ABI versions from the
189 EI_ABIVERSION field in the ELF header.
190 Implemented by Ulrich Drepper.
192 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
193 will not be used to fill in password fields in the passwd.byname replies.
194 Instead it is used to synthesize the shadow.byname table, should it be
195 missing. This is a useful mode in some installations involving Solaris.
196 Implemented by Ulrich Drepper.
198 * New locales: kok_IN, sq_MK, cv_RU
202 * The following bugs are resolved with this release:
204 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
205 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
206 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
207 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
208 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
209 10789, 10817, 10823, 10840, 10847
211 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
213 Implemented by Ulrich Drepper.
215 * Checking version of longjmp added that fails if an uninitialized stack
216 frame would be created. Implemented by Ulrich Drepper.
218 * STT_GNU_IFUNC is now supported in static executables.
219 Implemented by H.J. Lu.
221 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
223 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
224 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
225 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
226 Contributed by H.J. Lu.
228 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
229 Implemented by Ulrich Drepper.
231 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
233 Contributed by H.J. Lu.
235 * Support for fma instruction in AVX on x86-64.
236 Implemented by H.J. Lu and Ulrich Drepper.
238 * AVX support in x86-64 auditing support in ld.so.
239 Implemented by H.J. Lu.
241 * STB_GNU_UNIQUE support added.
242 Implemented by Ulrich Drepper.
244 * Implement second fallback mode for optimized DNS lookup for even more
245 broken environments. If two requests from the same port are not
246 handled correctly close the socket and open a new one before sending
247 the second request. The 'single-request-reopen' option in /etc/resolv.conf
248 can be used to select this mode right away, instead of rediscovering the
249 necessity is every process again.
250 Implemented by Ulrich Drepper.
252 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
253 Implemented by Adam Tkac.
255 * Optimized iconv conversions for S390x.
256 Implemented by Andreas Krebbel.
258 * Using condvars with PI mutexes is now more efficient due to kernel
259 support for requeueing to PI futexes. NPTL support added for x86-64.
260 Implemented by Ulrich Drepper.
262 * New locales: ps_AF, my_MM
266 * The following bugs are resolved with this release:
268 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
269 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
270 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
271 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
272 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
274 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
275 Implemented by Ulrich Drepper.
277 * New Linux interfaces: accept4, fallocate, fallocate64.
278 Implemented by Ulrich Drepper.
280 * Correct declarations of string function when used in C++ code. This
281 could lead to compile errors for invalid C++ code.
283 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
286 * New POSIX 2008 interface: psiginfo
287 Implemented by Ulrich Drepper.
289 * New ISO C++1x interfaces: quick_exit, at_quick_exit
290 Implemented by Ulrich Drepper.
292 * Support for selecting between multiple function definitions at runtime
293 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
295 * The libcrypt library can now use the hash function implementations in
296 NSS. Implemented by Ulrich Drepper.
298 * The malloc implementation can be compiled to be less memory efficient
299 but higher performing in multi-threaded programs.
300 Implemented by Ulrich Drepper.
302 * New locales: nan_TW@latin, ks_IN
304 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
305 Implemented by Ulrich Drepper.
307 * Extended printf hook support. It is possible to use user-defined types
308 and extend existing format specifiers.
309 Implemented by Ulrich Drepper.
311 * Handling for group shadow files has been added.
312 Implemented by Ulrich Drepper.
314 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
315 servers (the case, e.g., for some people using the built-in DNS
316 server in ADSL modems/routers). There is a once-per-process timeout
317 in case of a broken server. To avoid it, users can run nscd or put
318 'options single-request' in /etc/resolv.conf.
319 Implemented by Ulrich Drepper.
323 * The following bugs are resolved with this release:
325 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
326 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
327 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
328 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
329 6968, 6974, 6980, 6995, 7008, 7009, 7029
331 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
332 up at the same time. Implemented by Ulrich Drepper.
334 * TLS descriptors for LD and GD on x86 and x86-64.
335 Implemented by Alexandre Oliva.
337 * getaddrinfo now handles DCCP and UDPlite.
338 Implemented by Ulrich Drepper.
340 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
341 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
342 Implemented by Ulrich Drepper.
344 * New implementation of memmem, strstr, and strcasestr which is O(n).
345 Implemented by Eric Blake.
347 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
349 * Implement "e" option for popen to open file descriptor with the
350 close-on-exec flag set. Implemented by Ulrich Drepper.
352 * Implement "b" mode for fmemopen. In this mode writes writes don't
353 implicitly add a NUL byte and seeks from the end of the buffer really
354 use the buffer end, not the string length as the basis.
355 Implemented by Ulrich Drepper.
357 * Many functions, exported and internal, now atomically set the close-on-exec
358 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
360 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
362 Implemented by Pravin Satpute.
364 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
368 * The following bugs are resolved with this release:
370 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
371 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
372 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
373 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
374 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
375 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
376 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
378 * New locales: bo_CN, bo_IN, shs_CA.
380 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
382 * Sorting rules for some Indian languages (Devanagari and Gujarati).
383 Implemented by Pravin Satpute.
385 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
387 * nscd caches now all timeouts for DNS entries
388 Implemented by Ulrich Drepper.
390 * nscd is more efficient and wakes up less often.
391 Implemented by Ulrich Drepper.
393 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
394 vdprintf, and obstack_vprintf.
395 Implemented by Jakub Jelinek.
397 * Faster memset for x86-64.
398 Implemented by Harsha Jagasia and H.J. Lu.
400 * Faster memcpy on x86.
401 Implemented by Ulrich Drepper.
403 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
404 Implemented by Ulrich Drepper.
406 * Faster sqrt and sqrtf implemention for some PPC variants.
407 Implemented by Stephen Munroe.
411 * The following bugs are resolved with this release:
413 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
414 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
415 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
416 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
417 5071, 5103, 5104, 5112, 5113, 5184, 5186
419 * More checking functions: fread, fread_unlocked, open*, mq_open.
420 Implemented by Jakub Jelinek and Ulrich Drepper.
422 * Extend fortification to C++. Implemented by Jakub Jelinek.
424 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
425 by not recognizing 'a' as a modifier when those specs are requested.
426 Implemented by Jakub Jelinek.
428 * PPC optimizations to math and string functions.
429 Implemented by Steven Munroe.
431 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
432 options to be passed. Implemented by Ulrich Drepper.
434 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
436 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
437 Implemented by Ulrich Drepper.
439 * Handle private futexes in the NPTL implementation.
440 Implemented by Jakub Jelinek and Ulrich Drepper.
442 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
443 Implemented by Roland McGrath and Ulrich Drepper.
445 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
447 * SHA-256 and SHA-512 based password encryption.
448 Implemented by Ulrich Drepper.
450 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
451 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
454 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
455 Implemented by Ulrich Drepper.
459 * The following bugs are resolved with this release:
461 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
462 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
463 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
464 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
465 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
466 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
467 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
470 * New Linux interfaces: epoll_pwait, sched_getcpu.
472 * New generic interfaces: strerror_l.
474 * nscd can now cache the services database. Implemented by Ulrich Drepper.
478 * The following bugs are resolved with this release:
480 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
481 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
482 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
483 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
484 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
485 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
486 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
487 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
488 3225, 3251, 3252, 3253, 3273
490 * For Linux, the sorting of addresses returned by getaddrinfo now also
491 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
492 Implemented by Ulrich Drepper.
494 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
495 Implemented by Ulrich Drepper.
497 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
499 * New iconv module for MIK. Contributed by Alexander Shopov.
501 * For sites with broken group and/or passwd database, the auto-propagate
502 option of nscd can prevent creating ID lookup entries from the results
503 of a name lookup and vice versa. This usually is no problem but some
504 site might have problems with the default behavior.
505 Implemented by Ulrich Drepper.
507 * Iterating over entire database in NIS can be slow. With the
508 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
509 to trade time for memory. The entire database will be read at once.
510 Implemented by Ulrich Drepper.
512 * The interfaces introduced in RFC 3542 have been implemented by
515 * Support for the new ELF hash table format was added by Ulrich Drepper.
517 * Support for priority inheritance mutexes added by Jakub Jelinek and
520 * Support for priority protected mutexes added by Jakub Jelinek.
522 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
523 or_IN, csb_PL, fy_NL, sr_ME.
527 * More overflow detection functions.
529 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
530 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
532 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
533 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
534 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
535 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
536 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
537 by Masahide Washizawa.
539 * It is now possible to install audit libraries for the dynamic linker using
540 LD_AUDIT. Implemented by Ulrich Drepper.
542 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
543 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
544 For a libc and libpthread that works well on Linux 2.4 kernels, we
545 recommend using the stable 2.3 branch.
547 * The new function open_wmemstream acts like open_memstream,
548 but uses a wchar_t wide character buffer.
550 * The new function ppoll is an improved version of poll, similar to pselect.
552 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
553 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
554 renameat, unlinkat, linkat, symlinkat, readlinkat.
556 * New Linux kernel system calls: unshare,
557 inotify_init, inotify_add_watch, inotify_rm_watch.
559 * The euidaccess function is now also known by the alias eaccess,
560 for compatibility with some other systems.
562 * Timezone data updated to 2006b version.
566 * The following bugs are resolved with this release:
568 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
569 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
570 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
571 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
572 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
573 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
575 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
577 * As of this release, GCC 4 can be used to compile the C Library.
579 * Timezone data updated to 2005m version.
583 * The following bugs are resolved with this release:
585 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
586 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
587 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
588 777, 787, 821, 822, 823, 825
590 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
594 * Support for RFC 3678. Real implementations exist only for Linux so far.
595 Implemented by Ulrich Drepper.
597 * nscd can now cache entries persistently. Expiring entries are reloaded.
598 For speedups the cache can be shared in memory with client processes.
599 Implemented by Ulrich Drepper.
601 * nscd can now perform SELinux checks.
602 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
604 * getaddrinfo queries are now cached. Canonical name lookup is performed
606 Implemented by Ulrich Drepper.
608 * The nothrow function attribute is used when headers are used by gcc when
609 compiling C code. This can avoid significant amounts of exception
612 * The malloc functions perform more error checking and are stricter when
613 it comes to reacting on errors. The default action is to terminate
614 the process after showing an error message. Implemented by Ulrich Drepper.
616 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
617 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
619 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
620 namespaces using the new function dlmopen(). This feature is of course,
621 like most other dynamic loading functionality, not available in statically
622 linked applications. Implemented by Ulrich Drepper.
624 * Low-overhead boundary checking variants of string and some stdio functions
625 were added. These are to be used in conjunction with a gcc patch by
626 Jakub Jelinek which adds calls to these functions if possible.
627 Implemented by Jakub Jelinek and Ulrich Drepper.
629 * Old code for several operating systems and machine architectures that
630 have not been in working condition in a long time have been removed from
631 the main source tree maintained by the GNU C Library's maintainers.
632 These files are now reside in the separate `ports' source module
633 that is usable as an add-on when building the library.
637 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
638 interrogate the dynamic linker, compatible with the Solaris interface.
640 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
641 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
643 * getifaddrs now uses the netlink interface on Linux to get its information.
644 Implemented by Thorsten Kukuk.
646 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
647 Implemented by Ulrich Drepper.
649 * support for non-executable stacks on x86 has been added. Changes mostly
652 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
655 * getaddrinfo now performs destination address selection according to
660 * Thread-safe interfaces for many functions that access locale data
661 were added in version 2.3, but these features were omitted from NEWS.
662 Many functions have variants with an `_l' suffix that take a `locale_t'
663 object as a parameter rather than consulting the current locale.
664 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
665 create and maintain `locale_t' objects. Additionally, the new function
666 `uselocale' sets "the current locale" (as used by functions not so
667 parameterized) set for an individual thread. These features were added
668 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
670 * The functions getresuid, getresgid, setresuid, and setresgid, which
671 have long been available on Linux, are now declared in <unistd.h>
672 and are now also available on the Hurd.
674 * ELF thread-local storage support (TLS) now works on x86-64.
676 * The new dynamic string token $LIB is expanded in shared library names.
677 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
679 * Aldy Hernandez contributed complete software floating point support for
680 PowerPC machines with no FPU.
682 * fexecve is implemented on Linux.
684 * The `btowc' function should work at least twice as fast due to
685 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
687 * With approriate thread add-ons cancelable functions are now implemented
688 in libc.so as well. No need to call the function in libpthread. This
689 change allowed to finally disable the incorrect and expensive handling
690 of weak definition in ld.so.
692 * Yet more PLT entries in libc.so have been removed. We finally arrived
693 at the bare minimum. Startup times improved appropriately.
695 * Support for the new Linux/x86 system call interface was added. The
696 AT_SYSINFO auxiliary vector entry is recognized and handled.
700 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
703 * iconv (the program and the interface) now accepts empty names (excluding
704 options like //TRANSLIT) to mean "use charset of current locale".
706 * localedef can now transliterate characters in strings which are not in
707 the provided charmap. The information from the input locale is used.
709 * Prelinking support was added for ELF targets. This requires additional
710 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
712 * Read-only stdio streams now use mmap to speed up operation by eliminating
713 copying and buffer underflows. To use add 'm' to the mode string of
714 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
716 * The malloc functions were completely rewritten by Wolfram Gloger based
717 on Doug Lea's malloc-2.7.0.c.
719 * Isamu Hasegawa contributed a completely new and POSIX-conformant
720 implementation of regex.
722 * Bruno Haible upgraded the iconv and locale implementation to support
725 * Contents of the LC_* and LANG environment variables in the CEN style are
726 not recognized anymore. It never was used. Change by Ulrich Drepper.
728 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
729 thread-local storage (TLS) ABI on some platforms.
730 Changes by Ulrich Drepper. SH support by Kaz Kojima.
732 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
733 EUC-JISX0213, and TSCII.
735 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
736 BSD-compatible interface for getting all network interface addresses.
737 Implementation for IPv4 by Roland McGrath.
739 * Loading of locale data is faster due to the introduction of a locale
740 archive. Implemented by Roland McGrath and Ulrich Drepper.
742 * Startup times are significantly reduced by not using exported functions
743 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
746 * Steven Munroe contributed a port to PowerPC64/Linux.
750 * The Hurd now uses the GNU libio implementation of stdio rather than the
751 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
753 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
754 with the same behavior as the Linux system call of the same name.
758 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
759 128-bit long double format.
761 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
762 IBM1161, and IBM1162 charsets.
764 * Andreas Jaeger contributed a port to x86-64/Linux.
766 * Peter Bruin contributed a port to PowerPC/Hurd.
768 * libc functions using I/O streams now can handle wide-oriented streams
771 * optimizations in the dynamic linker. Binaries created by recent binutils
772 versions start up quicker due to reduced time spent on relocations.
774 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
778 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
779 asinh, atanh, j0 for the 128-bit long double format.
781 * Bruno Haible updated all the code handling Unicode in some form to
784 * Speed of regex for single-byte locales is back to previous levels.
785 Patch by Isamu Hasegawa.
787 * Alpha, SPARC, and IA-64 now also using floating stacks.
789 * Startup time of internationalized applications greatly improved through
790 iconv cache. Use iconvconfig to generate the cache file.
791 Contributed by Ulrich Drepper.
793 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
794 severe performance problems. Patch by David Mosberger.
796 * The Hurd port got a lot more functionality like AIO, various stdio
797 extensions, etc. Mainly done by Roland McGrath.
799 * mtrace can now lookup symbols in shared libraries.
803 * Intel's IA-64 math library is largely integrated. It provides fast and
804 accurate implementatations for most basic and standard math functions
805 in float, double, and long double format.
807 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
808 and asin for the 96-bit long double format and asin, log, tan for the
809 128-bit long double format.
811 * The beginning of a last-bit accurate math library by IBM Haifa were added.
812 The basic double functions exist today. Contributed by Abraham Ziv
813 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
814 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
816 * An asynchronous name lookup library was added. The interface is designed
817 after POSIX AIO. The proposal was circulated beforehand to get comments.
818 No negative ones came in. Implemented by Ulrich Drepper.
820 * Port to S390/64bit contributed by Martin Schwidefsky
821 <schwidefsky@de.ibm.com>.
823 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
824 of functions for Linux/IA-64.
826 * The RPC code is now thread safe. Threads can now use the same service
827 of different services at the same time. Patch by Eric Norum
828 <eric.norum@usask.ca> with some help by Ulrich Drepper.
830 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
831 family of functions for Linux/S390.
833 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
834 of functions for Linux/x86.
836 * Port to Linux/CRIS contributed by Axis Communications.
840 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
841 we can now check for namespace violations and missing declarations. The
842 result is that almost all headers are now Unix-compliant (as defined in
843 the upcoming XPG6). The negative side is that some programs might need
844 corrections, too, if they depend on the incorrect form of the headers in
845 previous versions which defined too many symbols and included too many
848 * regex now handles multibyte character sets correctly.
849 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
851 * iconv (the program) does now conform to the upcoming XPG6 and handles
852 charmaps. Instead of the charset names the path of charmaps can be
853 provided and the conversion happens based on this data.
854 Contributed by Ulrich Drepper.
856 * The locale program now provides detailed information about the installed
861 only lists the names of the supported locales
865 provides details such as country, language, and codeset name.
866 Contributed by Ulrich Drepper.
870 * The gencat program now parses the input file according to the charset
871 selected by the LC_CTYPE category. This is important for stateful
872 character sets. To make generating catalogs easier there is a way
873 to overwrite the charset selected by the locale: before the first
874 message or $ quote line the catalog can contain a line like
878 to select the charset (ISO-8859-2 in this case).
880 Implemented by Shinya Hanataka and Ulrich Drepper.
882 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
883 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
884 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
886 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
887 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
889 * The LANGUAGE environment variable is now ignored unless the locale is
890 changed from the default "C" locale.
892 * The usual bug fixes.
896 * Greg McGary added runtime support for bounds checking using gcc's
897 new -fbounded-pointers option. ix86 target is complete. PowerPC
900 * Thorsten Kukuk added secure mode support to nscd.
902 * The Berkeley db libraries have been removed.
904 Related, the nss_db module is now in a separate package since it
905 obviously requires a database library being available.
907 * Wide character I/O streams implemented by Ulrich Drepper.
909 * Functions from the extended socket API added by Ulrich Drepper.
911 * Functions feenableexcept and fedisableexcept to control the
912 behaviour of individual exceptions have been added by Andreas Jaeger.
914 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
916 * The resolver code has been updated from bind 8.2.3-T5B which supports
917 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
920 This change could in some situations effect backward compatibility. Since
921 now `_res' is a thread-local instead of a global variable, modifying it
922 in one thread does not have any effect in other threads.
924 The resolver library was also extended to allow IPv6 as the transport
925 protocol for the requests. This work was done by Stig Venaas.
927 * Compatibility code for K&R C compilers has been removed from the
928 header files. A ISO C compiler is needed to use the library
929 (conforming to either C89 or C99 standard).
931 * Complete rewrite of the localedef program to support multibyte character
932 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
933 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
934 Implemented by Ulrich Drepper.
936 Bruno Haible significantly improved the generation and use of the data
937 structures for the wide character tables.
939 * Plural handling in gettext implemented by Ulrich Drepper.
941 * The utmp daemon has been removed.
943 * The port to MIPS-Linux has been finished by Andreas Jaeger.
945 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
948 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
950 * POSIX barriers implemented by Kaz Kylheku.
952 * POSIX spawn function family implemented by Ulrich Drepper.
954 * POSIX spinlocks are now available.
956 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
958 * the configure option --enable-kernel=X.Y.Z allows to strip out
959 compatibility for kernel versions before X.Y.Z. This is currently only
960 implemented for Linux.
962 * the sockaddr_in6 structure changed. The IPv6 working group added a new
963 field sin6_scope_id. This means that all programs using IPv6 should be
964 recompiled. Don't expect binary compatibility with previous glibc
967 * various conversion modules for IBM character sets contributed by
970 * IA-64 port by Jes Sorensen and HJ Lu.
972 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
973 Compiling the GNU C Library for Linux/ia64
974 ******************************************
976 Please refer to the file INSTALL in the same directory as you found
977 this file for general information about configuring and compiling
980 For general inquiries about glibc under Linux/ia64 please use the
981 following mailing list linux-ia64@linuxia64.org or one of the relevant
984 Recommended Tools for Compilation
985 =================================
987 In order for glibc-2.2 to build correctly on the ia64 you need at
988 least the following versions of the GNU tools (the :
990 * The Cygnus toolchain snapshot for the ia64 as of August 4
991 including the provided set of patches. It is however recommend
992 you use the October 24 toolchain snapshot or a more recent version.
994 OR alternatively you can try the following (the Cygnus toolchain is
995 the recommended solution):
997 * GCC and binutils, GAS and GNU LD out of CVS from
998 sources.redhat.com as of August 28, 2000 or later. The CVS tree
999 may require special patches to work properly on the ia64.
1001 Configuring and compiling GNU Libc for Linux/ia64
1002 =================================================
1004 The library requires Linux kernel version 2.4.0-test4-000728 or
1005 later to funtion properly. Besides that it support for debug libraries
1006 is currently untested. Hence the following options
1007 are required for configuring the library:
1009 --disable-debug --enable-kernel=2.4.0
1011 It is also important that you make sure the library picks up the
1012 appropriate kernel header files, if you do not have recent enough
1013 kernel headers in /usr/src/linux/include, you should use the
1014 --with-headers=<path> option to specify the location.
1016 As an example I personally use the following options to configure
1021 --enable-kernel=2.4.0
1023 --enable-add-ons=yes
1025 --with-headers=/home/jes/linux/include
1030 Jes Sorensen <jes@linuxcare.com>,
1032 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1046 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1048 * New xdr functions are added; some rpc functions are now 64bit clean.
1050 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1052 * Fixed known incompatibilities with glibc 2.0.
1054 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1056 * Optimized a number of functions (especially the ELF dynamic loader).
1058 * Update timezone data files.
1060 * lots of charmaps corrections
1062 * some new locale definitions and charmaps
1067 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1068 conform to POSIX member type requirements. Symbol versions have been
1069 adjusted as needed within the library, and for direct use by applications,
1070 but there is potential for problems if third-party libraries use
1071 struct timeval as part of their interface. This does not present
1072 a problem for X and other "essential" system libraries.
1074 * An additional locale model to support C++ Standard Library locale
1075 model and probably more was implemented by Ulrich Drepper.
1077 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1080 * Miles Bader provided the `argp' function family to support hierachical
1081 command line argument parsing, layered on top of getopt.
1083 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1085 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1088 * scanf recognizes the %a and %A format for scanning floating point numbers.
1090 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1091 information and interfaces for the available integer types.
1093 * about 130 new math functions were added to implement the ISO C9x math
1096 * the new header <complex.h> contains definitions of the complex math
1097 functions from ISO C 9X.
1099 * the new header <tgmath.h> defines generic macros to use complex or
1100 real valued functions.
1102 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1104 * Andreas Jaeger provided a test suite for the math library.
1106 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1108 * Ulrich Drepper added character set conversion functions (iconv).
1110 * Optimized string functions have been added.
1112 * The localedata addon is now part of glibc.
1114 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1116 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1117 daemon for NSS (nscd).
1119 Missing a better place here are some numbers on improvements. Under
1120 Linux 2.1.125 un-tar-ing the kernel sources takes
1124 using local files 12.19s 6.88s 22.91s
1126 using NIS 13.92s 8.91s 26.34s
1128 using NIS & nscd 10.37s 7.34s 25.30s
1130 using NIS+ 27.57s 30.37s 640.46s
1132 using NIS+ & nscd 10.25s 7.83s 26.51s
1134 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1136 Keep in mind that non-namelookup related operations dominate above times.
1137 It was just a common complain that using NIS+ unpacking the kernel is
1140 [1] The old nscd implementation is not available anymore since it was
1141 distributed with glibc up to version 2.0.98 and thus is now replaced.
1143 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1145 * Mark Kettenis provided a Hesiod NSS module.
1147 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1148 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1150 * rcmd can now handle netgroups (Dick Streefland).
1152 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1155 * Support for the IPv6 protocol has been added to the socket API, as per the
1156 latest draft standards.
1158 * Support for Linux 2.2 has been added.
1160 * Interface changes relative to the latest 2.0.x release:
1161 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1162 addseverity NEW: Unix98
1163 alphasort64 NEW: LFS
1164 argp_err_exit_status NEW: argp, GNU ext
1165 argp_error NEW: argp, GNU ext
1166 argp_failure NEW: argp, GNU ext
1167 argp_help NEW: argp, GNU ext
1168 argp_parse NEW: argp, GNU ext
1169 argp_program_bug_address NEW: argp, GNU ext
1170 argp_program_version NEW: argp, GNU ext
1171 argp_program_version_hook NEW: argp, GNU ext
1172 argp_state_help NEW: argp, GNU ext
1173 argp_usage NEW: argp, GNU ext
1174 authdes_create NEW: Secure RPC
1175 authdes_getucred NEW: Secure RPC
1176 authdes_pk_create NEW: Secure RPC
1177 backtrace NEW: GNU ext.
1178 backtrace_symbols NEW: GNU ext.
1179 backtrace_symbols_fd NEW: GNU ext.
1181 cacosf NEW: ISO C 9x
1182 cacosh NEW: ISO C 9x
1183 cacoshf NEW: ISO C 9x
1184 cacoshl NEW: ISO C 9x
1185 cacosl NEW: ISO C 9x
1192 casinf NEW: ISO C 9x
1193 casinh NEW: ISO C 9x
1194 casinhf NEW: ISO C 9x
1195 casinhl NEW: ISO C 9x
1196 casinl NEW: ISO C 9x
1198 catanf NEW: ISO C 9x
1199 catanh NEW: ISO C 9x
1200 catanhf NEW: ISO C 9x
1201 catanhl NEW: ISO C 9x
1202 catanl NEW: ISO C 9x
1203 cbc_crypt NEW: Secure RPC
1207 ccoshf NEW: ISO C 9x
1208 ccoshl NEW: ISO C 9x
1214 cimagf NEW: ISO C 9x
1215 cimagl NEW: ISO C 9x
1216 clearerr_locked REMOVED
1217 clntunix_create NEW: sunrpc ext
1219 clog10 NEW: ISO C 9x
1220 clog10f NEW: ISO C 9x
1221 clog10l NEW: ISO C 9x
1231 cprojf NEW: ISO C 9x
1232 cprojl NEW: ISO C 9x
1234 crealf NEW: ISO C 9x
1235 creall NEW: ISO C 9x
1240 csinhf NEW: ISO C 9x
1241 csinhl NEW: ISO C 9x
1244 csqrtf NEW: ISO C 9x
1245 csqrtl NEW: ISO C 9x
1249 ctanhf NEW: ISO C 9x
1250 ctanhl NEW: ISO C 9x
1252 des_setparity NEW: Secure RPC
1253 ecb_crypt NEW: Secure RPC
1254 endutxent NEW: Unix98
1256 exp10f NEW: ISO C 9x
1257 exp10l NEW: ISO C 9x
1261 fattach NEW: STREAMS
1262 fdetach NEW: STREAMS
1266 feclearexcept NEW: ISO C 9x
1267 fegetenv NEW: ISO C 9x
1268 fegetexceptflag NEW: ISO C 9x
1269 fegetround NEW: ISO C 9x
1270 feholdexcept NEW: ISO C 9x
1272 feraiseexcept NEW: ISO C 9x
1273 ferror_locked REMOVED
1274 fesetenv NEW: ISO C 9x
1275 fesetexceptflag NEW: ISO C 9x
1276 fesetround NEW: ISO C 9x
1277 fetestexcept NEW: ISO C 9x
1278 feupdateenv NEW: ISO C 9x
1279 fflush_locked REMOVED
1283 fgets_unlocked NEW: GNU ext.
1284 fileno_locked REMOVED
1296 fputc_locked REMOVED
1297 fputs_unlocked NEW: GNU ext.
1298 fread_unlocked NEW: GNU ext.
1303 fstatvfs NEW: Unix98
1307 ftruncate64 NEW: LFS
1309 fwrite_unlocked NEW: GNU ext.
1310 gai_strerror NEW: IPv6
1314 getchar_locked REMOVED
1316 getdate_err NEW: Unix98
1317 getdate_r NEW: GNU ext.
1319 getnameinfo NEW: IPv6
1320 getnetname NEW: Secure RPC
1321 getpmsg NEW: STREAMS
1322 getpt NEW: Unix98 PTY
1323 getrlimit64 NEW: LFS
1324 getutxent NEW: Unix98
1325 getutxid NEW: Unix98
1326 getutxline NEW: Unix98
1327 glob64 NEW: GNU ext.
1328 globfree64 NEW: GNU ext.
1329 gnu_get_libc_release NEW: GNU ext.
1330 gnu_get_libc_version NEW: GNU ext.
1331 grantpt NEW: Unix98 PTY
1332 host2netname NEW: Secure RPC
1334 iconv_close NEW: iconv
1335 iconv_open NEW: iconv
1336 if_freenameindex NEW: IPv6
1337 if_indextoname NEW: IPv6
1338 if_nameindex NEW: IPv6
1339 if_nametoindex NEW: IPv6
1340 in6addr_any NEW: IPv6
1341 in6addr_loopback NEW: IPv6
1342 inet6_isipv4mapped NEW: IPv6
1343 isastream NEW: STREAMS
1344 iswblank NEW: GNU ext.
1345 key_decryptsession NEW: Secure RPC
1346 key_decryptsession_pk NEW: Secure RPC
1347 key_encryptsession NEW: Secure RPC
1348 key_encryptsession_pk NEW: Secure RPC
1349 key_gendes NEW: Secure RPC
1350 key_get_conv NEW: Secure RPC
1351 key_secretkey_is_set NEW: Secure RPC
1352 key_setnet NEW: Secure RPC
1353 key_setsecret NEW: Secure RPC
1354 llrint NEW: ISO C 9x
1355 llrintf NEW: ISO C 9x
1356 llrintl NEW: ISO C 9x
1357 llround NEW: ISO C 9x
1358 llroundf NEW: ISO C 9x
1359 llroundl NEW: ISO C 9x
1364 lrintf NEW: ISO C 9x
1365 lrintl NEW: ISO C 9x
1366 lround NEW: ISO C 9x
1367 lroundf NEW: ISO C 9x
1368 lroundl NEW: ISO C 9x
1370 makecontext NEW: Unix98
1371 mempcpy NEW: GNU ext.
1374 modify_ldt NEW: kernel
1378 nearbyint NEW: ISO C 9x
1379 nearbyintf NEW: ISO C 9x
1380 nearbyintl NEW: ISO C 9x
1381 netname2host NEW: Secure RPC
1382 netname2user NEW: Secure RPC
1383 nexttoward NEW: ISO C 9x
1384 nexttowardf NEW: ISO C 9x
1385 nexttowardl NEW: ISO C 9x
1389 passwd2des NEW: Secure RPC
1391 pow10f NEW: GNU ext.
1392 pow10l NEW: GNU ext.
1395 printf_size NEW: GNU ext.
1396 printf_size_info NEW: GNU ext.
1397 profil_counter REMOVED
1398 pthread_mutexattr_getkind_np REPLACED
1399 pthread_mutexattr_setkind_np REPLACED
1400 ptsname NEW: Unix98 PTY
1401 ptsname_r NEW: Unix98 PTY
1403 putchar_locked REMOVED
1404 putgrent NEW: GNU ext.
1406 putpmsg NEW: STREAMS
1407 pututxline NEW: Unix98
1411 readdir64_r NEW: LFS
1412 remquo NEW: ISO C 9x
1413 remquof NEW: ISO C 9x
1414 remquol NEW: ISO C 9x
1416 roundf NEW: ISO C 9x
1417 roundl NEW: ISO C 9x
1419 scalbln NEW: ISO C 9x
1420 scalblnf NEW: ISO C 9x
1421 scalblnl NEW: ISO C 9x
1423 sendfile NEW: kernel
1424 setcontext NEW: Unix98
1425 setrlimit64 NEW: LFS
1426 setutxent NEW: Unix98
1428 sigignore NEW: Unix98
1429 sigqueue NEW: POSIX.1b
1430 sigrelse NEW: Unix98
1431 sigset NEW: POSIX.1b
1432 sigtimedwait NEW: POSIX.1b
1433 sigwaitinfo NEW: POSIX.1b
1434 sincos NEW: GNU ext.
1435 sincosf NEW: GNU ext.
1436 sincosl NEW: GNU ext.
1440 strcasestr NEW: GNU ext.
1441 strtoimax NEW: ISO C 9x
1442 strtoumax NEW: ISO C 9x
1443 strverscmp NEW: GNU ext.
1444 svcauthdes_stats NEW: Secure RPC
1445 svcunix_create NEW: sunrpc etx
1446 svcunixfd_create NEW: sunrpc ext
1447 swapcontext NEW: Unix98
1448 tcgetsid NEW: Unix98 PTY
1449 tdestroy NEW: GNU ext.
1450 tgamma NEW: ISO C 9x
1451 tgammaf NEW: ISO C 9x
1452 tgammal NEW: ISO C 9x
1456 truncf NEW: ISO C 9x
1457 truncl NEW: ISO C 9x
1459 unlockpt NEW: Unix98 PTY
1460 updwtmpx NEW: Unix98
1461 user2netname NEW: Secure RPC
1462 utmpxname NEW: Unix98
1463 versionsort NEW: GNU ext.
1464 versionsort64 NEW: GNU ext.
1466 wcscasecmp NEW: GNU ext.
1467 wcsncasecmp NEW: GNU ext.
1468 wcsnlen NEW: GNU ext.
1469 wcstoimax NEW: ISO C 9x
1470 wcstoll NEW: ISO C 9x
1471 wcstoull NEW: ISO C 9x
1472 wcstoumax NEW: ISO C 9x
1474 wordexp NEW: POSIX.2
1475 wordfree NEW: POSIX.2
1476 write_profiling REMOVED
1477 xdecrypt NEW: Secure RPC
1478 xdr_authdes_cred NEW: Secure RPC
1479 xdr_authdes_verf NEW: Secure RPC
1480 xdr_cryptkeyarg NEW: Secure RPC
1481 xdr_cryptkeyarg2 NEW: Secure RPC
1482 xdr_cryptkeyres NEW: Secure RPC
1483 xdr_getcredres NEW: Secure RPC
1484 xdr_key_netstarg NEW: Secure RPC
1485 xdr_key_netstres NEW: Secure RPC
1486 xdr_keybuf NEW: Secure RPC
1487 xdr_keystatus NEW: Secure RPC
1488 xdr_netnamestr NEW: Secure RPC
1489 xdr_sizeof NEW: Secure RPC
1490 xdr_unixcred NEW: sunrpc ext
1491 xencrypt NEW: Secure RPC
1492 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1503 * inet_ntoa is thread-safe
1505 * updwtmp is moved from libutil to libc
1507 * rewrite of cbrt function
1509 * update of timezone data
1523 * add atoll function
1525 * fix complex problems in Berkeley DB code
1527 * fix math functions
1531 * fixed lots of header problems (especially Linux/GNU specific)
1533 * dynamic loader preserves all registers
1535 * Roland McGrath provided support for handling of auxiliary objects in
1536 the ELF dynamic loader.
1538 * support for parallel builds is improved
1542 * GNU extensions are no longer declared by default. To enable them you
1543 must define the macro `_GNU_SOURCE' in your program or compile with
1546 * The library has changed from using GNU ld symbol aliases to using weak
1547 symbols where available. The ELF object file format supports weak
1548 symbols; GNU ld also supports weak symbols in the a.out format. (There
1549 is also now support for other GNU ld extensions in ELF. Use the
1550 `--with-elf' option to configure to indicate you have ELF, and
1551 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1552 of many files which contained only symbol aliases, reducing the size of
1553 the source and the compiled library; many other files were renamed to
1554 less cryptic names previously occupied by the symbol alias files.
1555 There is a new header file <elf.h> for programs which operate on
1556 files in the ELF format.
1558 * Converted to Autoconf version 2, so `configure' has more options.
1559 Run `configure --help' to see the details.
1561 * The library can now be configured to build profiling, highly-optimized
1562 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1563 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1564 `configure' enable building these extra libraries. The shared library is
1565 built by default when using both ELF and GNU ld. When shared libraries
1566 are enabled, the new library `-ldl' is available for arbitrary run-time
1567 loading of shared objects; its interface is defined in <dlfcn.h>. The
1568 new header file <link.h> gives access to the internals of the run-time
1569 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1570 application of same name on other systems and it provides information
1571 about dynamically linked binaries.
1573 * The C library now provides the run-time support code for profiling
1574 executables compiled with `-pg'. Programs can control the profiling code
1575 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1576 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1577 the support for this file format was contributed by David Mosberger-Tang.
1579 * The math code has been replaced with a math library based on fdlibm from
1580 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1581 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1582 functions. The math functions now reside in a separate library, so
1583 programs using them will need to use `-lm' their linking commands.
1585 * John C. Bowman contributed optimized ix87 assembler inline functions.
1587 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1588 mechanism similar to that found in Solaris 2. This is now used for the
1589 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1590 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1591 file controls what services are used for each individual database. This
1592 works by loading shared libraries with names specified in `nsswitch.conf',
1593 so service modules can be changed or added at any time without even
1594 relinking any program. Currently there are the file, db, and NIS based
1595 NSS services available.
1597 * The new functions `strtoq' and `strtouq' parse integer values from
1598 strings, like `strtol' and `strtoul', but they return `long long int' and
1599 `unsigned long long int' values, respectively (64-bit quantities).
1601 * The new functions `strtof' and `strtold' parse floating-point values from
1602 strings, like `strtod', but they return `float' and `long double' values,
1603 respectively (on some machines `double' and `long double' are the same).
1605 * Ulrich Drepper has contributed new implementations of the floating-point
1606 printing and reading code used in the `printf' family of functions and
1607 `strtod', `strtof', and `strtold'. These new functions are perfectly
1608 accurate, and much faster than the old ones.
1610 * The implementation of the POSIX locale model was completely rewritten by
1611 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1612 to compile the POSIX locale definition.
1614 * The former dummy implementations of the strcoll and strxfrm function are
1615 now replaced by fully functional code contributed by Ulrich Drepper. The
1616 collation information comes from the POSIX locale definitions.
1618 * The new header <langinfo.h> defines an interface for accessing
1619 various locale-dependent data (using the locale chosen with `setlocale').
1621 * Ulrich Drepper has contributed a new suite of functions for operation on
1622 wide-character and multibyte-character strings, in <wchar.h>;
1623 and classification and case conversion of wide characters, in <wctype.h>.
1624 These new functions are conforming to the ISO C, Amendement 1 specification.
1626 * There is now a second implementation of the standard I/O library available.
1627 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1628 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1630 * You can now use positional parameter specifications in format strings
1631 for the `printf' and `scanf' families of functions. For example,
1632 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1633 ``Number 6, Mr Jones''. This is mainly useful when providing different
1634 format strings for different languages, whose grammars may dictate
1635 different orderings of the values being printed. To support this
1636 feature, the interface for `register_printf_handler' has changed; see
1637 the header file <printf.h> for details.
1639 * The `printf' and `scanf' families of functions now understand a new
1640 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1641 to group numbers as indicated by the locale; for `scanf' and friends, this
1642 says to accept as valid only a number with all the proper grouping
1643 separators in the right places. In the default "C" locale, numbers are
1644 not grouped; but locales for specific countries will define the usual
1645 conventions (i.e. separate thousands with `,' in the US locale).
1647 * The pgrp functions have been regularized, slightly incompatibly but much
1648 less confusingly. The core functions are now `getpgid' and `setpgid',
1649 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1650 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1651 provided for compatibility. There is no longer an incompatible `getpgrp'
1652 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1654 * The new header file <fts.h> and suite of functions simplify programs that
1655 operate on directory trees. This code comes from 4.4 BSD.
1657 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1658 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1659 NSS scheme used in glibc.
1661 * There is a new malloc debugging hook `__memalign_hook'.
1663 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1664 `unsigned int' in <sys/types.h>. These are for compatibility only and
1665 their use is discouraged.
1667 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1668 done differently, so that it works even without GNU ld.
1670 * New function `euidaccess' checks allowed access to a file like `access',
1671 but using the effective IDs instead of the real IDs.
1673 * The time zone data files have been updated for the latest and greatest
1674 local time conventions of the countries of the world.
1676 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1679 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1680 for formatting floating-point numbers. They are provided only for
1681 compatibility; new programs should use `sprintf' instead. There are
1682 also equivalent function for the `long double' floating-point type and
1683 all functions also exist in a reentrant form.
1685 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1686 functions for maintaining the login-record files (primarily of use to
1687 system programs such as `login'), and convenient functions for
1688 allocating and initializing a pseudo-terminal (pty) device.
1690 * Ulrich Drepper has contributed new support for System V style
1691 shared memory and IPC on systems that support it.
1693 * Ulrich Drepper has contributed several miscellaneous new functions found
1694 in System V: The `hsearch' family of functions provide an effective
1695 implementation of hash tables; `a64l' and `l64a' provide a very simple
1696 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1699 * Ulrich Drepper has contributed new reentrant counterparts for the
1700 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1702 * Ulrich Drepper has contributed new, highly-optimized versions of several
1703 string functions for the i486/Pentium family of processors.
1705 * Ulrich Drepper has updated the Linux-specific code, based largely
1706 on work done in Hongjiu Lu's version of GNU libc for Linux.
1707 The GNU library now supports Linux versions 2.0.10 and later,
1708 using the ELF object file format (i[3456]86-*-linux).
1710 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1712 * David Mosberger-Tang and Richard Henderson have ported the C library
1713 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1714 dynamic linking support for ELF/Alpha.
1716 * Richard Henderson contributed several Alpha optimized assembler function
1717 for arithmetic and string handling.
1719 * Ulrich Drepper has contributed a new set of message catalog functions to
1720 support multiple languages using the <libintl.h> interface, for use with
1721 his new package GNU gettext. Translation volunteers have contributed
1722 catalogs of the library's messages in Spanish, German, and Korean.
1724 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1725 program and the `catgets' function for reading the catalog files it
1726 creates. (The <libintl.h> interface is preferred; we include the
1727 <nl_types.h> interface using `catgets' only for source compatibility with
1728 programs already written to use it.)
1730 * New header file <values.h> gives SVID-compatible names for <limits.h>
1733 * Various new macros, declarations, and small header files for compatibility
1736 * New function `group_member' is a convenient way to check if a process has
1737 a given effective group ID.
1739 * When using GCC 2.7 and later, the socket functions are now declared in a
1740 special way so that passing an argument of type `struct sockaddr_in *',
1741 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1742 `struct sockaddr *' type, does not generate a type-clash warning.
1744 * New function `error' declared in header file <error.h> is a convenient
1745 function for printing error messages and optionally exiting; this is the
1746 canonical function used in GNU programs. The new functions `err', `warn',
1747 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1748 doing the same thing.
1750 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1751 POSIX.2 `glob' function to do ~ and {...} expansion.
1753 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1754 `clearenv' which is used in POSIX.9 is also available.
1756 * New function `getsid' returns session ID number on systems that support it.
1758 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1759 files <db.h> and <mpool.h> provide a rich set of functions for several
1760 types of simple databases stored in memory and in files, and <ndbm.h> is
1761 an old `ndbm'-compatible interface using the `db' functions. Link with
1762 `-ldb' to get these functions.
1764 * New macro `strdupa' copies a string like `strdup', but uses local stack
1765 space from `alloca' instead of dynamic heap space from `malloc'.
1767 * New function `strnlen' is like `strlen' but searches only a given maximum
1768 number of characters for the null terminator. `stpncpy', `strndup' and
1769 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1772 * New function `statfs' in header <sys/statfs.h>.
1774 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1775 provide convenient functions for operating on blocks of null-terminated
1778 * A new suite of functions in <utmp.h> handle all the details of reading
1779 and writing the utmp file.
1781 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1784 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1785 completely POSIX compliant and also implemented the extended functionality
1786 to handle alternate digit representation and alternate era date formats.
1788 * Ulrich Drepper provided an implementation of the `strptime' function
1789 defined in XPG4.2 which transforms a string into a `struct tm' value.
1791 * Paul Eggert provided the tzselect shell script as part of the timezone
1792 code. The shell script makes it easy to select the correct timezone
1795 * The implementation of the malloc family of functions is completely replaced
1796 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1797 The implementation uses the mmap function (if available) and it is
1798 optimized for the use in multi threaded programs.
1800 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1801 functions. This new functionality is usable by specifying a special
1802 salt string and it is compatible with implementation on *BSD systems.
1804 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1805 `getsubopt' to handle second level command line options, `bsd_signal'
1806 to access BSD style `signal' functionality, the obsolete `regexp' style
1809 * the `lchown' function is available on system which support this
1812 * The implementation of the shadow password handling function was contributed
1815 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1817 * POSIX.1g support was added. The <sys/select.h> header is available,
1818 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1819 implementation of `getaddrinfo'.
1823 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1825 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1826 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1828 * The new function `daemon' from 4.4 BSD is useful for server programs that
1829 want to put themselves in the background.
1831 * Joel Sherrill has contributed support for several standalone boards that
1832 run without an operating system.
1834 * `printf', `scanf' and friends now accept a `q' type modifier for long
1835 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1837 * All of the code taken from BSD (notably most of the math and networking
1838 routines) has been updated from the BSD 4.4-Lite release.
1840 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1842 * The new functions `getdomainname' and `setdomainname' fetch or change the
1843 YP/NIS domain name. These are system calls which exist on systems which
1846 * The time zone data files have been updated for the latest international
1849 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1850 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1854 * The C library now includes support for Sun RPC, from Sun's free
1855 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1856 are included. (There is still no support for YP.)
1858 * Tom Quinn has contributed a port of the C library to SGI machines running
1859 Irix 4 (mips-sgi-irix4).
1861 * The new `lockf' function is a simplified interface to the locking
1862 facilities of `fcntl', included for compatibility.
1864 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1866 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1868 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1871 * The error message printed by `assert' for a failed assertion now includes
1872 the name of the program (if using GNU ld) and the name of the calling
1873 function (with versions of GCC that support this).
1875 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1877 * The library now includes the <sys/mman.h> header file and memory
1878 management functions `mmap', `munmap', `mprotect', `msync', and
1879 `madvise', on systems that support those facilities.
1881 * The interface for `mcheck' has changed slightly: the function called to
1882 abort the program when an allocation inconsistency is detected now takes
1883 an argument that indicates the type of failure. The new function
1884 `mprobe' lets you request a consistency check for a particular block at
1885 any time (checks are normally done only when you call `free' or `realloc'
1888 * It is now possible to easily cross-compile the C library, building on one
1889 system a library to run on another machine and/or operating system. All
1890 you need to do is set the variable `HOST_CC' in `configparms' to the
1891 native compiler for programs to run on the machine you are building on (a
1892 few generator programs are used on Unix systems); set `CC' to the
1895 * The new function `fexecve' (only implemented on the GNU system) executes
1896 a program file given a file descriptor already open on the file.
1900 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1901 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1903 * You can set the variable `libprefix' in `configparms' to specify a prefix
1904 to be prepended to installed library files; this makes it easy to install
1905 the GNU C library to be linked as `-lgnuc' or whatever.
1907 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1908 copies a limited number of characters from a string, and returns the
1909 address of the last character written.
1911 * You no longer need to check for whether the installed `stddef.h' is
1912 compatible with the GNU C library. configure now checks for you.
1914 * You can now define a per-stream `fileno' function to convert the
1915 stream's cookie into an integral file descriptor.
1917 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1918 allocates zero bytes of storage, and returns a unique pointer which
1919 you can pass to `realloc' or `free'. The behavior is undefined if
1920 you dereference this pointer.
1922 * The C library now runs on Sony NEWS m68k machines running either
1923 NewsOS 3 or NewsOS 4.
1925 * The new `syscall' function is a system-dependent primitive function
1926 for invoking system calls. It has the canonical behavior on Unix
1927 systems, including unreliable return values for some calls (such as
1928 `pipe', `fork' and `getppid').
1930 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1931 to `EAGAIN', which is the preferred name. On systems whose kernels
1932 use two distinct codes, the C library now translates EWOULDBLOCK to
1933 EAGAIN in every system call function.
1937 * The GNU C Library Reference Manual is now distributed with the library.
1938 `make dvi' will produce a DVI file of the printed manual.
1939 `make info' will produce Info files that you can read on line using C-h i
1940 in Emacs or the `info' program.
1941 Please send comments on the manual to bug-glibc-manual@gnu.org.
1943 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1945 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1947 * Jason Merrill has contributed a port to the Sequent Symmetry running
1948 Dynix version 3 (i386-sequent-dynix).
1950 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1951 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1953 * New function `memory_warnings' lets you arrange to get warnings when
1954 malloc is running out of memory to allocate, like Emacs gives you.
1956 * The C library now contains the relocating allocator used in Emacs 19 for
1957 its editing buffers. This allocator (ralloc) minimizes allocation
1958 overhead and fragmentation by moving allocated regions around whenever it
1959 needs to. You always refer to a ralloc'd region with a "handle" (a
1960 pointer to a pointer--an object of type `void **').
1962 * There is a new `printf' format: `%m' gives you the string corresponding
1963 to the error code in `errno'.
1965 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1966 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1967 pass, the `a' modifier says to fill in a `char **' you pass with a
1970 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1971 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1972 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1974 * `mkstemp' is a traditional Unix function to atomically create and open a
1975 uniquely-named temporary file.
1979 * The standard location for the file that says what the local timezone is
1980 has changed again. It is now `/usr/local/etc/localtime' (or more
1981 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1983 * The distribution no longer contains any files with names longer than 14
1986 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1987 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1989 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1993 * The configuration process has changed quite a bit. The `configure'
1994 script is now used just like the configuration scripts for other GNU
1995 packages. The `sysdeps' directory hierarchy is much rearranged.
1996 The file `INSTALL' explains the new scheme in detail.
1998 * The header files no longer need to be processed into ANSI C and
1999 traditional C versions. There is just one set of files to install, and
2000 it will work with ANSI or old C compilers (including `gcc -traditional').
2002 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2003 MIPS DECStation running Ultrix 4.
2005 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2006 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2007 made itself into a shared library.
2009 * Yet further improved support for the i386, running 4.3 BSD-like systems
2010 (such as Mach 3 with the Unix single-server), or System V.
2012 * New function `strncasecmp' to do case-insensitive string comparison
2013 with limited length.
2015 * New function `strsep' is a reentrant alternative to `strtok'.
2017 * New functions `scandir' and `alphasort' for searching directories.
2019 * New function `setenv' is a better interface to `putenv'.
2021 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2022 function for traversing a directory tree.
2024 * The GNU obstack package is now also part of the C library.
2025 The new function `open_obstack_stream' creates a stdio stream that
2026 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2027 formatted output directly to an obstack.
2029 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2030 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2032 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2034 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2035 things to your strings.
2037 * There are some new test programs: test-fseek, testmb, and testrand.
2039 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2040 These ports are not finished, but are a good starting place for really
2041 supporting those systems.
2043 * `/etc/localtime' is now the standard location for the file that says what
2044 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2045 This follows the general principle that `/etc' is the place for all local
2046 configuration files.
2048 * The C library header files now use `extern "C"' when used by the C++
2049 compiler, so the C library should now work with C++ code.
2051 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2052 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2055 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2056 function which uses the `merge sort' algorithm, and is said to be
2057 significantly faster than the old GNU `qsort' function. Merge sort is
2058 now the standard `qsort' function. The new algorithm can require a lot
2059 of temporary storage; so, the old sorting function is called when the
2060 required storage is not available.
2062 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2063 provides the Unix `crypt' function, plus some other entry points.
2065 * The code and header files taken from 4.4 BSD have been updated with the
2066 latest files released from Berkeley.
2068 ----------------------------------------------------------------------
2069 Copyright information:
2071 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2073 Permission is granted to anyone to make or distribute verbatim copies
2074 of this document as received, in any medium, provided that the
2075 copyright notice and this permission notice are preserved,
2076 thus giving the recipient permission to redistribute in turn.
2078 Permission is granted to distribute modified versions
2079 of this document, or of portions of it,
2080 under the above conditions, provided also that they
2081 carry prominent notices stating who last changed them.
2084 version-control: never
projects / platform / upstream / glibc.git / blob