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1 GNU C Library NEWS -- history of user-visible changes. 2011-12-23
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.
7 \f
8 Version 2.15
10 * The following bugs are resolved with this release:
12 6779, 6783, 9696, 10103, 10709, 11589, 12403, 12786, 12840, 12847, 12868,
13 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962, 13007,
14 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092, 13096,
15 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179, 13185,
16 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335, 13337,
17 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472, 13484,
18 13506, 13515, 13523, 13524, 13538, 13540
20 * New program pldd to list loaded object of a process
21 Implemented by Ulrich Drepper.
23 * Add nss_db support back to glibc. No more dependency on Berkeley db
24 and support for initgroups lookups.
25 Implemented by Ulrich Drepper.
27 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
28 Contributed by HJ Lu.
30 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
31 Contributed by HJ Lu.
33 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
34 on x86-32 and x86-64.
35 Contributed by Liubov Dmitrieva.
37 * Optimized strchr and strrchr for SSE on x86-32.
38 Contributed by Liubov Dmitrieva.
40 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
41 for x86-64 and x86-32.
42 Contributed by Liubov Dmitrieva.
44 * New interfaces: scandirat, scandirat64
45 Implemented by Ulrich Drepper.
47 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
48 Implemented by Ulrich Drepper.
50 * nscd now also caches the netgroup database.
51 Implemented by Ulrich Drepper.
53 * Integrate libm with gcc's -ffinite-math-only option.
54 Implemented by Ulrich Drepper.
56 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
57 to math functions. Implemented by Ulrich Drepper.
59 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
60 Implemented by Ulrich Drepper.
62 * New Linux interfaces: process_vm_readv, process_vm_writev
64 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
65 Implemented by Ulrich Drepper.
67 * Optimized nearbyint and strcasecmp for PPC.
68 Implemented by Adhemerval Zanella.
70 * New locales: bho_IN, unm_US, es_CU, ta_LK
71 \f
72 Version 2.14
74 * The following bugs are resolved with this release:
76 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
77 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
78 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
79 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
80 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
81 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
82 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
83 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
84 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
85 12795, 12811, 12813, 12814, 12841
87 * The RPC implementation in libc is obsoleted. Old programs keep working
88 but new programs cannot be linked with the routines in libc anymore.
89 Programs in need of RPC functionality must be linked against TI-RPC.
90 The TI-RPC implementation is IPv6 enabled and there are other benefits.
92 Visible changes of this change include (obviously) the inability to link
93 programs using RPC functions without referencing the TI-RPC library and the
94 removal of the RPC headers from the glibc headers.
95 Implemented by Ulrich Drepper.
97 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
98 syncfs, setns, sendmmsg
100 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
101 yue_HK, lij_IT, mhr_RU
103 * New encodings: CP770, CP771, CP772, CP773, CP774
105 * New program sotruss to trace calls through PLTs
106 Implemented by Ulrich Drepper.
108 * The malloc hook implementation is marked deprecated and will be removed
109 from the default implementation in the next version. The design never
110 worked ever since the introduction of threads. Even programs which do
111 not create threads themselves can use multiple threads created internally.
112 \f
113 Version 2.13
115 * The following bugs are resolved with this release:
117 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
118 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
119 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
120 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
121 12378, 12394, 12397
123 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
125 * POWER7 optimizations: memset, memcmp, strncmp
127 * New optimized string functions for x86-64: strnlen (SSE2),
128 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
129 Implemented by Ulrich Drepper.
130 \f
131 Version 2.12
133 * The following bugs are resolved with this release:
135 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
136 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
137 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
138 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
139 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
140 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
141 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
142 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
144 * New interfaces: pthread_getname_np, pthread_setname_np
146 * New Linux interface: recvmmsg
148 * STT_GNU_IFUNC implemented for Sparc by David Miller.
150 * The dynamic linker now recognizes supported ABI versions from the
151 EI_ABIVERSION field in the ELF header.
152 Implemented by Ulrich Drepper.
154 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
155 will not be used to fill in password fields in the passwd.byname replies.
156 Instead it is used to synthesize the shadow.byname table, should it be
157 missing. This is a useful mode in some installations involving Solaris.
158 Implemented by Ulrich Drepper.
160 * New locales: kok_IN, sq_MK, cv_RU
161 \f
162 Version 2.11
164 * The following bugs are resolved with this release:
166 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
167 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
168 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
169 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
170 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
171 10789, 10817, 10823, 10840, 10847
173 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
174 mkostemps64
175 Implemented by Ulrich Drepper.
177 * Checking version of longjmp added that fails if an uninitialized stack
178 frame would be created. Implemented by Ulrich Drepper.
180 * STT_GNU_IFUNC is now supported in static executables.
181 Implemented by H.J. Lu.
183 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
185 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
186 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
187 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
188 Contributed by H.J. Lu.
190 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
191 Implemented by Ulrich Drepper.
193 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
194 strstr, strcasestr.
195 Contributed by H.J. Lu.
197 * Support for fma instruction in AVX on x86-64.
198 Implemented by H.J. Lu and Ulrich Drepper.
200 * AVX support in x86-64 auditing support in ld.so.
201 Implemented by H.J. Lu.
203 * STB_GNU_UNIQUE support added.
204 Implemented by Ulrich Drepper.
206 * Implement second fallback mode for optimized DNS lookup for even more
207 broken environments. If two requests from the same port are not
208 handled correctly close the socket and open a new one before sending
209 the second request. The 'single-request-reopen' option in /etc/resolv.conf
210 can be used to select this mode right away, instead of rediscovering the
211 necessity is every process again.
212 Implemented by Ulrich Drepper.
214 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
215 Implemented by Adam Tkac.
217 * Optimized iconv conversions for S390x.
218 Implemented by Andreas Krebbel.
220 * Using condvars with PI mutexes is now more efficient due to kernel
221 support for requeueing to PI futexes. NPTL support added for x86-64.
222 Implemented by Ulrich Drepper.
224 * New locales: ps_AF, my_MM
225 \f
226 Version 2.10
228 * The following bugs are resolved with this release:
230 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
231 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
232 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
233 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
234 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
236 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
237 Implemented by Ulrich Drepper.
239 * New Linux interfaces: accept4, fallocate, fallocate64.
240 Implemented by Ulrich Drepper.
242 * Correct declarations of string function when used in C++ code. This
243 could lead to compile errors for invalid C++ code.
245 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
246 now in POSIX.
248 * New POSIX 2008 interface: psiginfo
249 Implemented by Ulrich Drepper.
251 * New ISO C++1x interfaces: quick_exit, at_quick_exit
252 Implemented by Ulrich Drepper.
254 * Support for selecting between multiple function definitions at runtime
255 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
257 * The libcrypt library can now use the hash function implementations in
258 NSS. Implemented by Ulrich Drepper.
260 * The malloc implementation can be compiled to be less memory efficient
261 but higher performing in multi-threaded programs.
262 Implemented by Ulrich Drepper.
264 * New locales: nan_TW@latin, ks_IN
266 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
267 Implemented by Ulrich Drepper.
269 * Extended printf hook support. It is possible to use user-defined types
270 and extend existing format specifiers.
271 Implemented by Ulrich Drepper.
273 * Handling for group shadow files has been added.
274 Implemented by Ulrich Drepper.
276 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
277 servers (the case, e.g., for some people using the built-in DNS
278 server in ADSL modems/routers). There is a once-per-process timeout
279 in case of a broken server. To avoid it, users can run nscd or put
280 'options single-request' in /etc/resolv.conf.
281 Implemented by Ulrich Drepper.
282 \f
283 Version 2.9
285 * The following bugs are resolved with this release:
287 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
288 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
289 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
290 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
291 6968, 6974, 6980, 6995, 7008, 7009, 7029
293 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
294 up at the same time. Implemented by Ulrich Drepper.
296 * TLS descriptors for LD and GD on x86 and x86-64.
297 Implemented by Alexandre Oliva.
299 * getaddrinfo now handles DCCP and UDPlite.
300 Implemented by Ulrich Drepper.
302 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
303 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
304 Implemented by Ulrich Drepper.
306 * New implementation of memmem, strstr, and strcasestr which is O(n).
307 Implemented by Eric Blake.
309 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
311 * Implement "e" option for popen to open file descriptor with the
312 close-on-exec flag set. Implemented by Ulrich Drepper.
314 * Implement "b" mode for fmemopen. In this mode writes writes don't
315 implicitly add a NUL byte and seeks from the end of the buffer really
316 use the buffer end, not the string length as the basis.
317 Implemented by Ulrich Drepper.
319 * Many functions, exported and internal, now atomically set the close-on-exec
320 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
322 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
323 Sinhala)
324 Implemented by Pravin Satpute.
326 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
327 \f
328 Version 2.8
330 * The following bugs are resolved with this release:
332 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
333 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
334 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
335 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
336 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
337 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
338 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
340 * New locales: bo_CN, bo_IN, shs_CA.
342 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
344 * Sorting rules for some Indian languages (Devanagari and Gujarati).
345 Implemented by Pravin Satpute.
347 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
349 * nscd caches now all timeouts for DNS entries
350 Implemented by Ulrich Drepper.
352 * nscd is more efficient and wakes up less often.
353 Implemented by Ulrich Drepper.
355 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
356 vdprintf, and obstack_vprintf.
357 Implemented by Jakub Jelinek.
359 * Faster memset for x86-64.
360 Implemented by Harsha Jagasia and H.J. Lu.
362 * Faster memcpy on x86.
363 Implemented by Ulrich Drepper.
365 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
366 Implemented by Ulrich Drepper.
368 * Faster sqrt and sqrtf implemention for some PPC variants.
369 Implemented by Stephen Munroe.
370 \f
371 Version 2.7
373 * The following bugs are resolved with this release:
375 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
376 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
377 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
378 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
379 5071, 5103, 5104, 5112, 5113, 5184, 5186
381 * More checking functions: fread, fread_unlocked, open*, mq_open.
382 Implemented by Jakub Jelinek and Ulrich Drepper.
384 * Extend fortification to C++. Implemented by Jakub Jelinek.
386 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
387 by not recognizing 'a' as a modifier when those specs are requested.
388 Implemented by Jakub Jelinek.
390 * PPC optimizations to math and string functions.
391 Implemented by Steven Munroe.
393 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
394 options to be passed. Implemented by Ulrich Drepper.
396 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
398 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
399 Implemented by Ulrich Drepper.
401 * Handle private futexes in the NPTL implementation.
402 Implemented by Jakub Jelinek and Ulrich Drepper.
404 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
405 Implemented by Roland McGrath and Ulrich Drepper.
407 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
409 * SHA-256 and SHA-512 based password encryption.
410 Implemented by Ulrich Drepper.
412 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
413 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
414 yo_NG.
416 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
417 Implemented by Ulrich Drepper.
418 \f
419 Version 2.6
421 * The following bugs are resolved with this release:
423 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
424 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
425 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
426 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
427 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
428 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
429 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
430 4702, 4858
432 * New Linux interfaces: epoll_pwait, sched_getcpu.
434 * New generic interfaces: strerror_l.
436 * nscd can now cache the services database. Implemented by Ulrich Drepper.
437 \f
438 Version 2.5
440 * The following bugs are resolved with this release:
442 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
443 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
444 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
445 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
446 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
447 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
448 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
449 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
450 3225, 3251, 3252, 3253, 3273
452 * For Linux, the sorting of addresses returned by getaddrinfo now also
453 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
454 Implemented by Ulrich Drepper.
456 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
457 Implemented by Ulrich Drepper.
459 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
461 * New iconv module for MIK. Contributed by Alexander Shopov.
463 * For sites with broken group and/or passwd database, the auto-propagate
464 option of nscd can prevent creating ID lookup entries from the results
465 of a name lookup and vice versa. This usually is no problem but some
466 site might have problems with the default behavior.
467 Implemented by Ulrich Drepper.
469 * Iterating over entire database in NIS can be slow. With the
470 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
471 to trade time for memory. The entire database will be read at once.
472 Implemented by Ulrich Drepper.
474 * The interfaces introduced in RFC 3542 have been implemented by
475 Ulrich Drepper.
477 * Support for the new ELF hash table format was added by Ulrich Drepper.
479 * Support for priority inheritance mutexes added by Jakub Jelinek and
480 Ulrich Drepper.
482 * Support for priority protected mutexes added by Jakub Jelinek.
484 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
485 or_IN, csb_PL, fy_NL, sr_ME.
486 \f
487 Version 2.4
489 * More overflow detection functions.
491 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
492 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
494 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
495 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
496 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
497 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
498 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
499 by Masahide Washizawa.
501 * It is now possible to install audit libraries for the dynamic linker using
502 LD_AUDIT. Implemented by Ulrich Drepper.
504 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
505 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
506 For a libc and libpthread that works well on Linux 2.4 kernels, we
507 recommend using the stable 2.3 branch.
509 * The new function open_wmemstream acts like open_memstream,
510 but uses a wchar_t wide character buffer.
512 * The new function ppoll is an improved version of poll, similar to pselect.
514 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
515 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
516 renameat, unlinkat, linkat, symlinkat, readlinkat.
518 * New Linux kernel system calls: unshare,
519 inotify_init, inotify_add_watch, inotify_rm_watch.
521 * The euidaccess function is now also known by the alias eaccess,
522 for compatibility with some other systems.
524 * Timezone data updated to 2006b version.
525 \f
526 Version 2.3.6
528 * The following bugs are resolved with this release:
530 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
531 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
532 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
533 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
534 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
535 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
537 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
539 * As of this release, GCC 4 can be used to compile the C Library.
541 * Timezone data updated to 2005m version.
542 \f
543 Version 2.3.5
545 * The following bugs are resolved with this release:
547 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
548 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
549 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
550 777, 787, 821, 822, 823, 825
552 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
553 \f
554 Version 2.3.4
556 * Support for RFC 3678. Real implementations exist only for Linux so far.
557 Implemented by Ulrich Drepper.
559 * nscd can now cache entries persistently. Expiring entries are reloaded.
560 For speedups the cache can be shared in memory with client processes.
561 Implemented by Ulrich Drepper.
563 * nscd can now perform SELinux checks.
564 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
566 * getaddrinfo queries are now cached. Canonical name lookup is performed
567 efficiently.
568 Implemented by Ulrich Drepper.
570 * The nothrow function attribute is used when headers are used by gcc when
571 compiling C code. This can avoid significant amounts of exception
572 handling data.
574 * The malloc functions perform more error checking and are stricter when
575 it comes to reacting on errors. The default action is to terminate
576 the process after showing an error message. Implemented by Ulrich Drepper.
578 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
579 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
581 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
582 namespaces using the new function dlmopen(). This feature is of course,
583 like most other dynamic loading functionality, not available in statically
584 linked applications. Implemented by Ulrich Drepper.
586 * Low-overhead boundary checking variants of string and some stdio functions
587 were added. These are to be used in conjunction with a gcc patch by
588 Jakub Jelinek which adds calls to these functions if possible.
589 Implemented by Jakub Jelinek and Ulrich Drepper.
591 * Old code for several operating systems and machine architectures that
592 have not been in working condition in a long time have been removed from
593 the main source tree maintained by the GNU C Library's maintainers.
594 These files are now reside in the separate `ports' source module
595 that is usable as an add-on when building the library.
596 \f
597 Version 2.3.3
599 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
600 interrogate the dynamic linker, compatible with the Solaris interface.
602 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
603 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
605 * getifaddrs now uses the netlink interface on Linux to get its information.
606 Implemented by Thorsten Kukuk.
608 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
609 Implemented by Ulrich Drepper.
611 * support for non-executable stacks on x86 has been added. Changes mostly
612 by Roland McGrath.
614 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
615 and Ulrich Drepper.
617 * getaddrinfo now performs destination address selection according to
618 RFC 3484.
619 \f
620 Version 2.3.2
622 * Thread-safe interfaces for many functions that access locale data
623 were added in version 2.3, but these features were omitted from NEWS.
624 Many functions have variants with an `_l' suffix that take a `locale_t'
625 object as a parameter rather than consulting the current locale.
626 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
627 create and maintain `locale_t' objects. Additionally, the new function
628 `uselocale' sets "the current locale" (as used by functions not so
629 parameterized) set for an individual thread. These features were added
630 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
632 * The functions getresuid, getresgid, setresuid, and setresgid, which
633 have long been available on Linux, are now declared in <unistd.h>
634 and are now also available on the Hurd.
636 * ELF thread-local storage support (TLS) now works on x86-64.
638 * The new dynamic string token $LIB is expanded in shared library names.
639 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
641 * Aldy Hernandez contributed complete software floating point support for
642 PowerPC machines with no FPU.
644 * fexecve is implemented on Linux.
646 * The `btowc' function should work at least twice as fast due to
647 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
649 * With approriate thread add-ons cancelable functions are now implemented
650 in libc.so as well. No need to call the function in libpthread. This
651 change allowed to finally disable the incorrect and expensive handling
652 of weak definition in ld.so.
654 * Yet more PLT entries in libc.so have been removed. We finally arrived
655 at the bare minimum. Startup times improved appropriately.
657 * Support for the new Linux/x86 system call interface was added. The
658 AT_SYSINFO auxiliary vector entry is recognized and handled.
659 \f
660 Version 2.3
662 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
663 charsets.
665 * iconv (the program and the interface) now accepts empty names (excluding
666 options like //TRANSLIT) to mean "use charset of current locale".
668 * localedef can now transliterate characters in strings which are not in
669 the provided charmap. The information from the input locale is used.
671 * Prelinking support was added for ELF targets. This requires additional
672 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
674 * Read-only stdio streams now use mmap to speed up operation by eliminating
675 copying and buffer underflows. To use add 'm' to the mode string of
676 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
678 * The malloc functions were completely rewritten by Wolfram Gloger based
679 on Doug Lea's malloc-2.7.0.c.
681 * Isamu Hasegawa contributed a completely new and POSIX-conformant
682 implementation of regex.
684 * Bruno Haible upgraded the iconv and locale implementation to support
685 Unicode 3.2.
687 * Contents of the LC_* and LANG environment variables in the CEN style are
688 not recognized anymore. It never was used. Change by Ulrich Drepper.
690 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
691 thread-local storage (TLS) ABI on some platforms.
692 Changes by Ulrich Drepper. SH support by Kaz Kojima.
694 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
695 EUC-JISX0213, and TSCII.
697 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
698 BSD-compatible interface for getting all network interface addresses.
699 Implementation for IPv4 by Roland McGrath.
701 * Loading of locale data is faster due to the introduction of a locale
702 archive. Implemented by Roland McGrath and Ulrich Drepper.
704 * Startup times are significantly reduced by not using exported functions
705 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
706 and Ulrich Drepper.
708 * Steven Munroe contributed a port to PowerPC64/Linux.
709 \f
710 Version 2.2.6
712 * The Hurd now uses the GNU libio implementation of stdio rather than the
713 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
715 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
716 with the same behavior as the Linux system call of the same name.
717 \f
718 Version 2.2.5
720 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
721 128-bit long double format.
723 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
724 IBM1161, and IBM1162 charsets.
726 * Andreas Jaeger contributed a port to x86-64/Linux.
728 * Peter Bruin contributed a port to PowerPC/Hurd.
730 * libc functions using I/O streams now can handle wide-oriented streams
731 as well.
733 * optimizations in the dynamic linker. Binaries created by recent binutils
734 versions start up quicker due to reduced time spent on relocations.
736 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
737 \f
738 Version 2.2.4
740 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
741 asinh, atanh, j0 for the 128-bit long double format.
743 * Bruno Haible updated all the code handling Unicode in some form to
744 support Unicode 3.1.
746 * Speed of regex for single-byte locales is back to previous levels.
747 Patch by Isamu Hasegawa.
749 * Alpha, SPARC, and IA-64 now also using floating stacks.
751 * Startup time of internationalized applications greatly improved through
752 iconv cache. Use iconvconfig to generate the cache file.
753 Contributed by Ulrich Drepper.
755 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
756 severe performance problems. Patch by David Mosberger.
758 * The Hurd port got a lot more functionality like AIO, various stdio
759 extensions, etc. Mainly done by Roland McGrath.
761 * mtrace can now lookup symbols in shared libraries.
762 \f
763 Version 2.2.3
765 * Intel's IA-64 math library is largely integrated. It provides fast and
766 accurate implementatations for most basic and standard math functions
767 in float, double, and long double format.
769 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
770 and asin for the 96-bit long double format and asin, log, tan for the
771 128-bit long double format.
773 * The beginning of a last-bit accurate math library by IBM Haifa were added.
774 The basic double functions exist today. Contributed by Abraham Ziv
775 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
776 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
778 * An asynchronous name lookup library was added. The interface is designed
779 after POSIX AIO. The proposal was circulated beforehand to get comments.
780 No negative ones came in. Implemented by Ulrich Drepper.
782 * Port to S390/64bit contributed by Martin Schwidefsky
783 <schwidefsky@de.ibm.com>.
785 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
786 of functions for Linux/IA-64.
788 * The RPC code is now thread safe. Threads can now use the same service
789 of different services at the same time. Patch by Eric Norum
790 <eric.norum@usask.ca> with some help by Ulrich Drepper.
792 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
793 family of functions for Linux/S390.
795 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
796 of functions for Linux/x86.
798 * Port to Linux/CRIS contributed by Axis Communications.
799 \f
800 Version 2.2.2
802 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
803 we can now check for namespace violations and missing declarations. The
804 result is that almost all headers are now Unix-compliant (as defined in
805 the upcoming XPG6). The negative side is that some programs might need
806 corrections, too, if they depend on the incorrect form of the headers in
807 previous versions which defined too many symbols and included too many
808 other headers.
810 * regex now handles multibyte character sets correctly.
811 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
813 * iconv (the program) does now conform to the upcoming XPG6 and handles
814 charmaps. Instead of the charset names the path of charmaps can be
815 provided and the conversion happens based on this data.
816 Contributed by Ulrich Drepper.
818 * The locale program now provides detailed information about the installed
819 locales. While
821 locale -a
823 only lists the names of the supported locales
825 locale -a --verbose
827 provides details such as country, language, and codeset name.
828 Contributed by Ulrich Drepper.
829 \f
830 Version 2.2.1
832 * The gencat program now parses the input file according to the charset
833 selected by the LC_CTYPE category. This is important for stateful
834 character sets. To make generating catalogs easier there is a way
835 to overwrite the charset selected by the locale: before the first
836 message or $ quote line the catalog can contain a line like
838 $ codeset=ISO-8859-2
840 to select the charset (ISO-8859-2 in this case).
842 Implemented by Shinya Hanataka and Ulrich Drepper.
844 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
845 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
846 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
848 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
849 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
851 * The LANGUAGE environment variable is now ignored unless the locale is
852 changed from the default "C" locale.
854 * The usual bug fixes.
855 \f
856 Version 2.2
858 * Greg McGary added runtime support for bounds checking using gcc's
859 new -fbounded-pointers option. ix86 target is complete. PowerPC
860 is in progress.
862 * Thorsten Kukuk added secure mode support to nscd.
864 * The Berkeley db libraries have been removed.
866 Related, the nss_db module is now in a separate package since it
867 obviously requires a database library being available.
869 * Wide character I/O streams implemented by Ulrich Drepper.
871 * Functions from the extended socket API added by Ulrich Drepper.
873 * Functions feenableexcept and fedisableexcept to control the
874 behaviour of individual exceptions have been added by Andreas Jaeger.
876 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
878 * The resolver code has been updated from bind 8.2.3-T5B which supports
879 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
880 and Mark Kettenis.
882 This change could in some situations effect backward compatibility. Since
883 now `_res' is a thread-local instead of a global variable, modifying it
884 in one thread does not have any effect in other threads.
886 The resolver library was also extended to allow IPv6 as the transport
887 protocol for the requests. This work was done by Stig Venaas.
889 * Compatibility code for K&R C compilers has been removed from the
890 header files. A ISO C compiler is needed to use the library
891 (conforming to either C89 or C99 standard).
893 * Complete rewrite of the localedef program to support multibyte character
894 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
895 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
896 Implemented by Ulrich Drepper.
898 Bruno Haible significantly improved the generation and use of the data
899 structures for the wide character tables.
901 * Plural handling in gettext implemented by Ulrich Drepper.
903 * The utmp daemon has been removed.
905 * The port to MIPS-Linux has been finished by Andreas Jaeger.
907 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
908 and Yutaka Niibe.
910 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
912 * POSIX barriers implemented by Kaz Kylheku.
914 * POSIX spawn function family implemented by Ulrich Drepper.
916 * POSIX spinlocks are now available.
918 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
920 * the configure option --enable-kernel=X.Y.Z allows to strip out
921 compatibility for kernel versions before X.Y.Z. This is currently only
922 implemented for Linux.
924 * the sockaddr_in6 structure changed. The IPv6 working group added a new
925 field sin6_scope_id. This means that all programs using IPv6 should be
926 recompiled. Don't expect binary compatibility with previous glibc
927 versions.
929 * various conversion modules for IBM character sets contributed by
930 Masahide Washizawa.
932 * IA-64 port by Jes Sorensen and HJ Lu.
934 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
935 Compiling the GNU C Library for Linux/ia64
936 ******************************************
938 Please refer to the file INSTALL in the same directory as you found
939 this file for general information about configuring and compiling
940 glibc.
942 For general inquiries about glibc under Linux/ia64 please use the
943 following mailing list linux-ia64@linuxia64.org or one of the relevant
944 glibc mailing lists.
946 Recommended Tools for Compilation
947 =================================
949 In order for glibc-2.2 to build correctly on the ia64 you need at
950 least the following versions of the GNU tools (the :
952 * The Cygnus toolchain snapshot for the ia64 as of August 4
953 including the provided set of patches. It is however recommend
954 you use the October 24 toolchain snapshot or a more recent version.
956 OR alternatively you can try the following (the Cygnus toolchain is
957 the recommended solution):
959 * GCC and binutils, GAS and GNU LD out of CVS from
960 sources.redhat.com as of August 28, 2000 or later. The CVS tree
961 may require special patches to work properly on the ia64.
963 Configuring and compiling GNU Libc for Linux/ia64
964 =================================================
966 The library requires Linux kernel version 2.4.0-test4-000728 or
967 later to funtion properly. Besides that it support for debug libraries
968 is currently untested. Hence the following options
969 are required for configuring the library:
971 --disable-debug --enable-kernel=2.4.0
973 It is also important that you make sure the library picks up the
974 appropriate kernel header files, if you do not have recent enough
975 kernel headers in /usr/src/linux/include, you should use the
976 --with-headers=<path> option to specify the location.
978 As an example I personally use the following options to configure
979 the library:
981 --disable-debug
982 --disable-cvs
983 --enable-kernel=2.4.0
984 --host=ia64-linux
985 --enable-add-ons=yes
986 --prefix=/usr
987 --with-headers=/home/jes/linux/include
990 Good luck
992 Jes Sorensen <jes@linuxcare.com>,
993 November 14th, 2000
994 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
995 \f
996 Version 2.1.3
998 * bug fixes
1000 \f
1001 Version 2.1.2
1003 * bug fixes
1005 \f
1006 Version 2.1.1
1008 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1010 * New xdr functions are added; some rpc functions are now 64bit clean.
1012 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1014 * Fixed known incompatibilities with glibc 2.0.
1016 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1018 * Optimized a number of functions (especially the ELF dynamic loader).
1020 * Update timezone data files.
1022 * lots of charmaps corrections
1024 * some new locale definitions and charmaps
1026 \f
1027 Version 2.1
1029 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1030 conform to POSIX member type requirements. Symbol versions have been
1031 adjusted as needed within the library, and for direct use by applications,
1032 but there is potential for problems if third-party libraries use
1033 struct timeval as part of their interface. This does not present
1034 a problem for X and other "essential" system libraries.
1036 * An additional locale model to support C++ Standard Library locale
1037 model and probably more was implemented by Ulrich Drepper.
1039 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1040 symbol level.
1042 * Miles Bader provided the `argp' function family to support hierachical
1043 command line argument parsing, layered on top of getopt.
1045 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1047 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1048 numbers.
1050 * scanf recognizes the %a and %A format for scanning floating point numbers.
1052 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1053 information and interfaces for the available integer types.
1055 * about 130 new math functions were added to implement the ISO C9x math
1056 library.
1058 * the new header <complex.h> contains definitions of the complex math
1059 functions from ISO C 9X.
1061 * the new header <tgmath.h> defines generic macros to use complex or
1062 real valued functions.
1064 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1066 * Andreas Jaeger provided a test suite for the math library.
1068 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1070 * Ulrich Drepper added character set conversion functions (iconv).
1072 * Optimized string functions have been added.
1074 * The localedata addon is now part of glibc.
1076 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1078 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1079 daemon for NSS (nscd).
1081 Missing a better place here are some numbers on improvements. Under
1082 Linux 2.1.125 un-tar-ing the kernel sources takes
1084 user system wall
1086 using local files 12.19s 6.88s 22.91s
1088 using NIS 13.92s 8.91s 26.34s
1090 using NIS & nscd 10.37s 7.34s 25.30s
1092 using NIS+ 27.57s 30.37s 640.46s
1094 using NIS+ & nscd 10.25s 7.83s 26.51s
1096 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1098 Keep in mind that non-namelookup related operations dominate above times.
1099 It was just a common complain that using NIS+ unpacking the kernel is
1100 horribly slow.
1102 [1] The old nscd implementation is not available anymore since it was
1103 distributed with glibc up to version 2.0.98 and thus is now replaced.
1105 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1107 * Mark Kettenis provided a Hesiod NSS module.
1109 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1110 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1112 * rcmd can now handle netgroups (Dick Streefland).
1114 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1115 Bambrough.
1117 * Support for the IPv6 protocol has been added to the socket API, as per the
1118 latest draft standards.
1120 * Support for Linux 2.2 has been added.
1122 * Interface changes relative to the latest 2.0.x release:
1123 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1124 addseverity NEW: Unix98
1125 alphasort64 NEW: LFS
1126 argp_err_exit_status NEW: argp, GNU ext
1127 argp_error NEW: argp, GNU ext
1128 argp_failure NEW: argp, GNU ext
1129 argp_help NEW: argp, GNU ext
1130 argp_parse NEW: argp, GNU ext
1131 argp_program_bug_address NEW: argp, GNU ext
1132 argp_program_version NEW: argp, GNU ext
1133 argp_program_version_hook NEW: argp, GNU ext
1134 argp_state_help NEW: argp, GNU ext
1135 argp_usage NEW: argp, GNU ext
1136 authdes_create NEW: Secure RPC
1137 authdes_getucred NEW: Secure RPC
1138 authdes_pk_create NEW: Secure RPC
1139 backtrace NEW: GNU ext.
1140 backtrace_symbols NEW: GNU ext.
1141 backtrace_symbols_fd NEW: GNU ext.
1142 cacos NEW: ISO C 9x
1143 cacosf NEW: ISO C 9x
1144 cacosh NEW: ISO C 9x
1145 cacoshf NEW: ISO C 9x
1146 cacoshl NEW: ISO C 9x
1147 cacosl NEW: ISO C 9x
1148 capget NEW: kernel
1149 capset NEW: kernel
1150 carg NEW: ISO C 9x
1151 cargf NEW: ISO C 9x
1152 cargl NEW: ISO C 9x
1153 casin NEW: ISO C 9x
1154 casinf NEW: ISO C 9x
1155 casinh NEW: ISO C 9x
1156 casinhf NEW: ISO C 9x
1157 casinhl NEW: ISO C 9x
1158 casinl NEW: ISO C 9x
1159 catan NEW: ISO C 9x
1160 catanf NEW: ISO C 9x
1161 catanh NEW: ISO C 9x
1162 catanhf NEW: ISO C 9x
1163 catanhl NEW: ISO C 9x
1164 catanl NEW: ISO C 9x
1165 cbc_crypt NEW: Secure RPC
1166 ccos NEW: ISO C 9x
1167 ccosf NEW: ISO C 9x
1168 ccosh NEW: ISO C 9x
1169 ccoshf NEW: ISO C 9x
1170 ccoshl NEW: ISO C 9x
1171 ccosl NEW: ISO C 9x
1172 cexp NEW: ISO C 9x
1173 cexpf NEW: ISO C 9x
1174 cexpl NEW: ISO C 9x
1175 cimag NEW: ISO C 9x
1176 cimagf NEW: ISO C 9x
1177 cimagl NEW: ISO C 9x
1178 clearerr_locked REMOVED
1179 clntunix_create NEW: sunrpc ext
1180 clog NEW: ISO C 9x
1181 clog10 NEW: ISO C 9x
1182 clog10f NEW: ISO C 9x
1183 clog10l NEW: ISO C 9x
1184 clogf NEW: ISO C 9x
1185 clogl NEW: ISO C 9x
1186 conj NEW: ISO C 9x
1187 conjf NEW: ISO C 9x
1188 conjl NEW: ISO C 9x
1189 cpow NEW: ISO C 9x
1190 cpowf NEW: ISO C 9x
1191 cpowl NEW: ISO C 9x
1192 cproj NEW: ISO C 9x
1193 cprojf NEW: ISO C 9x
1194 cprojl NEW: ISO C 9x
1195 creal NEW: ISO C 9x
1196 crealf NEW: ISO C 9x
1197 creall NEW: ISO C 9x
1198 creat64 NEW: LFS
1199 csin NEW: ISO C 9x
1200 csinf NEW: ISO C 9x
1201 csinh NEW: ISO C 9x
1202 csinhf NEW: ISO C 9x
1203 csinhl NEW: ISO C 9x
1204 csinl NEW: ISO C 9x
1205 csqrt NEW: ISO C 9x
1206 csqrtf NEW: ISO C 9x
1207 csqrtl NEW: ISO C 9x
1208 ctan NEW: ISO C 9x
1209 ctanf NEW: ISO C 9x
1210 ctanh NEW: ISO C 9x
1211 ctanhf NEW: ISO C 9x
1212 ctanhl NEW: ISO C 9x
1213 ctanl NEW: ISO C 9x
1214 des_setparity NEW: Secure RPC
1215 ecb_crypt NEW: Secure RPC
1216 endutxent NEW: Unix98
1217 exp10 NEW: ISO C 9x
1218 exp10f NEW: ISO C 9x
1219 exp10l NEW: ISO C 9x
1220 exp2 NEW: ISO C 9x
1221 exp2f NEW: ISO C 9x
1222 exp2l NEW: ISO C 9x
1223 fattach NEW: STREAMS
1224 fdetach NEW: STREAMS
1225 fdim NEW: ISO C 9x
1226 fdimf NEW: ISO C 9x
1227 fdiml NEW: ISO C 9x
1228 feclearexcept NEW: ISO C 9x
1229 fegetenv NEW: ISO C 9x
1230 fegetexceptflag NEW: ISO C 9x
1231 fegetround NEW: ISO C 9x
1232 feholdexcept NEW: ISO C 9x
1233 feof_locked REMOVED
1234 feraiseexcept NEW: ISO C 9x
1235 ferror_locked REMOVED
1236 fesetenv NEW: ISO C 9x
1237 fesetexceptflag NEW: ISO C 9x
1238 fesetround NEW: ISO C 9x
1239 fetestexcept NEW: ISO C 9x
1240 feupdateenv NEW: ISO C 9x
1241 fflush_locked REMOVED
1242 ffsl NEW: GNU ext.
1243 ffsll NEW: GNU ext.
1244 fgetpos64 NEW: LFS
1245 fgets_unlocked NEW: GNU ext.
1246 fileno_locked REMOVED
1247 fma NEW: ISO C 9x
1248 fmaf NEW: ISO C 9x
1249 fmal NEW: ISO C 9x
1250 fmax NEW: ISO C 9x
1251 fmaxf NEW: ISO C 9x
1252 fmaxl NEW: ISO C 9x
1253 fmin NEW: ISO C 9x
1254 fminf NEW: ISO C 9x
1255 fminl NEW: ISO C 9x
1256 fmtmsg NEW: Unix98
1257 fopen64 NEW: LFS
1258 fputc_locked REMOVED
1259 fputs_unlocked NEW: GNU ext.
1260 fread_unlocked NEW: GNU ext.
1261 freopen64 NEW: LFS
1262 fseeko NEW: Unix98
1263 fsetpos64 NEW: LFS
1264 fstatfs64 NEW: LFS
1265 fstatvfs NEW: Unix98
1266 fstatvfs64 NEW: LFS
1267 ftello NEW: Unix98
1268 ftello64 NEW: LFS
1269 ftruncate64 NEW: LFS
1270 ftw64 NEW: LFS
1271 fwrite_unlocked NEW: GNU ext.
1272 gai_strerror NEW: IPv6
1273 gamma_r REMOVED
1274 gammaf_r REMOVED
1275 gammal_r REMOVED
1276 getchar_locked REMOVED
1277 getdate NEW: Unix98
1278 getdate_err NEW: Unix98
1279 getdate_r NEW: GNU ext.
1280 getmsg NEW: STREAMS
1281 getnameinfo NEW: IPv6
1282 getnetname NEW: Secure RPC
1283 getpmsg NEW: STREAMS
1284 getpt NEW: Unix98 PTY
1285 getrlimit64 NEW: LFS
1286 getutxent NEW: Unix98
1287 getutxid NEW: Unix98
1288 getutxline NEW: Unix98
1289 glob64 NEW: GNU ext.
1290 globfree64 NEW: GNU ext.
1291 gnu_get_libc_release NEW: GNU ext.
1292 gnu_get_libc_version NEW: GNU ext.
1293 grantpt NEW: Unix98 PTY
1294 host2netname NEW: Secure RPC
1295 iconv NEW: iconv
1296 iconv_close NEW: iconv
1297 iconv_open NEW: iconv
1298 if_freenameindex NEW: IPv6
1299 if_indextoname NEW: IPv6
1300 if_nameindex NEW: IPv6
1301 if_nametoindex NEW: IPv6
1302 in6addr_any NEW: IPv6
1303 in6addr_loopback NEW: IPv6
1304 inet6_isipv4mapped NEW: IPv6
1305 isastream NEW: STREAMS
1306 iswblank NEW: GNU ext.
1307 key_decryptsession NEW: Secure RPC
1308 key_decryptsession_pk NEW: Secure RPC
1309 key_encryptsession NEW: Secure RPC
1310 key_encryptsession_pk NEW: Secure RPC
1311 key_gendes NEW: Secure RPC
1312 key_get_conv NEW: Secure RPC
1313 key_secretkey_is_set NEW: Secure RPC
1314 key_setnet NEW: Secure RPC
1315 key_setsecret NEW: Secure RPC
1316 llrint NEW: ISO C 9x
1317 llrintf NEW: ISO C 9x
1318 llrintl NEW: ISO C 9x
1319 llround NEW: ISO C 9x
1320 llroundf NEW: ISO C 9x
1321 llroundl NEW: ISO C 9x
1322 log2 NEW: ISO C 9x
1323 log2f NEW: ISO C 9x
1324 log2l NEW: ISO C 9x
1325 lrint NEW: ISO C 9x
1326 lrintf NEW: ISO C 9x
1327 lrintl NEW: ISO C 9x
1328 lround NEW: ISO C 9x
1329 lroundf NEW: ISO C 9x
1330 lroundl NEW: ISO C 9x
1331 lseek64 NEW: LFS
1332 makecontext NEW: Unix98
1333 mempcpy NEW: GNU ext.
1334 mmap64 NEW: LFS
1335 moncontrol REMOVED
1336 modify_ldt NEW: kernel
1337 nan NEW: ISO C 9x
1338 nanf NEW: ISO C 9x
1339 nanl NEW: ISO C 9x
1340 nearbyint NEW: ISO C 9x
1341 nearbyintf NEW: ISO C 9x
1342 nearbyintl NEW: ISO C 9x
1343 netname2host NEW: Secure RPC
1344 netname2user NEW: Secure RPC
1345 nexttoward NEW: ISO C 9x
1346 nexttowardf NEW: ISO C 9x
1347 nexttowardl NEW: ISO C 9x
1348 nftw NEW: Unix98
1349 nftw64 NEW: LFS
1350 open64 NEW: LFS
1351 passwd2des NEW: Secure RPC
1352 pow10 NEW: GNU ext.
1353 pow10f NEW: GNU ext.
1354 pow10l NEW: GNU ext.
1355 pread NEW: Unix98
1356 pread64 NEW: LFS
1357 printf_size NEW: GNU ext.
1358 printf_size_info NEW: GNU ext.
1359 profil_counter REMOVED
1360 pthread_mutexattr_getkind_np REPLACED
1361 pthread_mutexattr_setkind_np REPLACED
1362 ptsname NEW: Unix98 PTY
1363 ptsname_r NEW: Unix98 PTY
1364 putc_locked REMOVED
1365 putchar_locked REMOVED
1366 putgrent NEW: GNU ext.
1367 putmsg NEW: STREAMS
1368 putpmsg NEW: STREAMS
1369 pututxline NEW: Unix98
1370 pwrite NEW: Unix98
1371 pwrite64 NEW: LFS
1372 readdir64 NEW: LFS
1373 readdir64_r NEW: LFS
1374 remquo NEW: ISO C 9x
1375 remquof NEW: ISO C 9x
1376 remquol NEW: ISO C 9x
1377 round NEW: ISO C 9x
1378 roundf NEW: ISO C 9x
1379 roundl NEW: ISO C 9x
1380 rtime NEW: GNU ext.
1381 scalbln NEW: ISO C 9x
1382 scalblnf NEW: ISO C 9x
1383 scalblnl NEW: ISO C 9x
1384 scandir64 NEW: LFS
1385 sendfile NEW: kernel
1386 setcontext NEW: Unix98
1387 setrlimit64 NEW: LFS
1388 setutxent NEW: Unix98
1389 sighold NEW: Unix98
1390 sigignore NEW: Unix98
1391 sigqueue NEW: POSIX.1b
1392 sigrelse NEW: Unix98
1393 sigset NEW: POSIX.1b
1394 sigtimedwait NEW: POSIX.1b
1395 sigwaitinfo NEW: POSIX.1b
1396 sincos NEW: GNU ext.
1397 sincosf NEW: GNU ext.
1398 sincosl NEW: GNU ext.
1399 statfs64 NEW: LFS
1400 statvfs NEW: Unix98
1401 statvfs64 NEW: LFS
1402 strcasestr NEW: GNU ext.
1403 strtoimax NEW: ISO C 9x
1404 strtoumax NEW: ISO C 9x
1405 strverscmp NEW: GNU ext.
1406 svcauthdes_stats NEW: Secure RPC
1407 svcunix_create NEW: sunrpc etx
1408 svcunixfd_create NEW: sunrpc ext
1409 swapcontext NEW: Unix98
1410 tcgetsid NEW: Unix98 PTY
1411 tdestroy NEW: GNU ext.
1412 tgamma NEW: ISO C 9x
1413 tgammaf NEW: ISO C 9x
1414 tgammal NEW: ISO C 9x
1415 tmpfile64 NEW: LFS
1416 trunc NEW: ISO C 9x
1417 truncate64 NEW: LFS
1418 truncf NEW: ISO C 9x
1419 truncl NEW: ISO C 9x
1420 umount2 NEW: kernel
1421 unlockpt NEW: Unix98 PTY
1422 updwtmpx NEW: Unix98
1423 user2netname NEW: Secure RPC
1424 utmpxname NEW: Unix98
1425 versionsort NEW: GNU ext.
1426 versionsort64 NEW: GNU ext.
1427 waitid NEW: Unix98
1428 wcscasecmp NEW: GNU ext.
1429 wcsncasecmp NEW: GNU ext.
1430 wcsnlen NEW: GNU ext.
1431 wcstoimax NEW: ISO C 9x
1432 wcstoll NEW: ISO C 9x
1433 wcstoull NEW: ISO C 9x
1434 wcstoumax NEW: ISO C 9x
1435 wcswcs NEW: Unix98
1436 wordexp NEW: POSIX.2
1437 wordfree NEW: POSIX.2
1438 write_profiling REMOVED
1439 xdecrypt NEW: Secure RPC
1440 xdr_authdes_cred NEW: Secure RPC
1441 xdr_authdes_verf NEW: Secure RPC
1442 xdr_cryptkeyarg NEW: Secure RPC
1443 xdr_cryptkeyarg2 NEW: Secure RPC
1444 xdr_cryptkeyres NEW: Secure RPC
1445 xdr_getcredres NEW: Secure RPC
1446 xdr_key_netstarg NEW: Secure RPC
1447 xdr_key_netstres NEW: Secure RPC
1448 xdr_keybuf NEW: Secure RPC
1449 xdr_keystatus NEW: Secure RPC
1450 xdr_netnamestr NEW: Secure RPC
1451 xdr_sizeof NEW: Secure RPC
1452 xdr_unixcred NEW: sunrpc ext
1453 xencrypt NEW: Secure RPC
1454 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1455 \f
1456 Version 2.0.6
1458 * more bug fixes
1460 \f
1461 Version 2.0.5
1463 * more bug fixes
1465 * inet_ntoa is thread-safe
1467 * updwtmp is moved from libutil to libc
1469 * rewrite of cbrt function
1471 * update of timezone data
1472 \f
1473 Version 2.0.4
1475 * more bug fixes
1476 \f
1477 Version 2.0.3
1479 * more bug fixes
1480 \f
1481 Version 2.0.2
1483 * more bug fixes
1485 * add atoll function
1487 * fix complex problems in Berkeley DB code
1489 * fix math functions
1490 \f
1491 Version 2.0.1
1493 * fixed lots of header problems (especially Linux/GNU specific)
1495 * dynamic loader preserves all registers
1497 * Roland McGrath provided support for handling of auxiliary objects in
1498 the ELF dynamic loader.
1500 * support for parallel builds is improved
1501 \f
1502 Version 2.0
1504 * GNU extensions are no longer declared by default. To enable them you
1505 must define the macro `_GNU_SOURCE' in your program or compile with
1506 `-D_GNU_SOURCE'.
1508 * The library has changed from using GNU ld symbol aliases to using weak
1509 symbols where available. The ELF object file format supports weak
1510 symbols; GNU ld also supports weak symbols in the a.out format. (There
1511 is also now support for other GNU ld extensions in ELF. Use the
1512 `--with-elf' option to configure to indicate you have ELF, and
1513 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1514 of many files which contained only symbol aliases, reducing the size of
1515 the source and the compiled library; many other files were renamed to
1516 less cryptic names previously occupied by the symbol alias files.
1517 There is a new header file <elf.h> for programs which operate on
1518 files in the ELF format.
1520 * Converted to Autoconf version 2, so `configure' has more options.
1521 Run `configure --help' to see the details.
1523 * The library can now be configured to build profiling, highly-optimized
1524 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1525 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1526 `configure' enable building these extra libraries. The shared library is
1527 built by default when using both ELF and GNU ld. When shared libraries
1528 are enabled, the new library `-ldl' is available for arbitrary run-time
1529 loading of shared objects; its interface is defined in <dlfcn.h>. The
1530 new header file <link.h> gives access to the internals of the run-time
1531 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1532 application of same name on other systems and it provides information
1533 about dynamically linked binaries.
1535 * The C library now provides the run-time support code for profiling
1536 executables compiled with `-pg'. Programs can control the profiling code
1537 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1538 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1539 the support for this file format was contributed by David Mosberger-Tang.
1541 * The math code has been replaced with a math library based on fdlibm from
1542 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1543 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1544 functions. The math functions now reside in a separate library, so
1545 programs using them will need to use `-lm' their linking commands.
1547 * John C. Bowman contributed optimized ix87 assembler inline functions.
1549 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1550 mechanism similar to that found in Solaris 2. This is now used for the
1551 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1552 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1553 file controls what services are used for each individual database. This
1554 works by loading shared libraries with names specified in `nsswitch.conf',
1555 so service modules can be changed or added at any time without even
1556 relinking any program. Currently there are the file, db, and NIS based
1557 NSS services available.
1559 * The new functions `strtoq' and `strtouq' parse integer values from
1560 strings, like `strtol' and `strtoul', but they return `long long int' and
1561 `unsigned long long int' values, respectively (64-bit quantities).
1563 * The new functions `strtof' and `strtold' parse floating-point values from
1564 strings, like `strtod', but they return `float' and `long double' values,
1565 respectively (on some machines `double' and `long double' are the same).
1567 * Ulrich Drepper has contributed new implementations of the floating-point
1568 printing and reading code used in the `printf' family of functions and
1569 `strtod', `strtof', and `strtold'. These new functions are perfectly
1570 accurate, and much faster than the old ones.
1572 * The implementation of the POSIX locale model was completely rewritten by
1573 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1574 to compile the POSIX locale definition.
1576 * The former dummy implementations of the strcoll and strxfrm function are
1577 now replaced by fully functional code contributed by Ulrich Drepper. The
1578 collation information comes from the POSIX locale definitions.
1580 * The new header <langinfo.h> defines an interface for accessing
1581 various locale-dependent data (using the locale chosen with `setlocale').
1583 * Ulrich Drepper has contributed a new suite of functions for operation on
1584 wide-character and multibyte-character strings, in <wchar.h>;
1585 and classification and case conversion of wide characters, in <wctype.h>.
1586 These new functions are conforming to the ISO C, Amendement 1 specification.
1588 * There is now a second implementation of the standard I/O library available.
1589 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1590 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1592 * You can now use positional parameter specifications in format strings
1593 for the `printf' and `scanf' families of functions. For example,
1594 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1595 ``Number 6, Mr Jones''. This is mainly useful when providing different
1596 format strings for different languages, whose grammars may dictate
1597 different orderings of the values being printed. To support this
1598 feature, the interface for `register_printf_handler' has changed; see
1599 the header file <printf.h> for details.
1601 * The `printf' and `scanf' families of functions now understand a new
1602 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1603 to group numbers as indicated by the locale; for `scanf' and friends, this
1604 says to accept as valid only a number with all the proper grouping
1605 separators in the right places. In the default "C" locale, numbers are
1606 not grouped; but locales for specific countries will define the usual
1607 conventions (i.e. separate thousands with `,' in the US locale).
1609 * The pgrp functions have been regularized, slightly incompatibly but much
1610 less confusingly. The core functions are now `getpgid' and `setpgid',
1611 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1612 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1613 provided for compatibility. There is no longer an incompatible `getpgrp'
1614 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1616 * The new header file <fts.h> and suite of functions simplify programs that
1617 operate on directory trees. This code comes from 4.4 BSD.
1619 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1620 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1621 NSS scheme used in glibc.
1623 * There is a new malloc debugging hook `__memalign_hook'.
1625 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1626 `unsigned int' in <sys/types.h>. These are for compatibility only and
1627 their use is discouraged.
1629 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1630 done differently, so that it works even without GNU ld.
1632 * New function `euidaccess' checks allowed access to a file like `access',
1633 but using the effective IDs instead of the real IDs.
1635 * The time zone data files have been updated for the latest and greatest
1636 local time conventions of the countries of the world.
1638 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1639 see <dirent.h>.
1641 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1642 for formatting floating-point numbers. They are provided only for
1643 compatibility; new programs should use `sprintf' instead. There are
1644 also equivalent function for the `long double' floating-point type and
1645 all functions also exist in a reentrant form.
1647 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1648 functions for maintaining the login-record files (primarily of use to
1649 system programs such as `login'), and convenient functions for
1650 allocating and initializing a pseudo-terminal (pty) device.
1652 * Ulrich Drepper has contributed new support for System V style
1653 shared memory and IPC on systems that support it.
1655 * Ulrich Drepper has contributed several miscellaneous new functions found
1656 in System V: The `hsearch' family of functions provide an effective
1657 implementation of hash tables; `a64l' and `l64a' provide a very simple
1658 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1659 number generator.
1661 * Ulrich Drepper has contributed new reentrant counterparts for the
1662 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1664 * Ulrich Drepper has contributed new, highly-optimized versions of several
1665 string functions for the i486/Pentium family of processors.
1667 * Ulrich Drepper has updated the Linux-specific code, based largely
1668 on work done in Hongjiu Lu's version of GNU libc for Linux.
1669 The GNU library now supports Linux versions 2.0.10 and later,
1670 using the ELF object file format (i[3456]86-*-linux).
1672 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1674 * David Mosberger-Tang and Richard Henderson have ported the C library
1675 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1676 dynamic linking support for ELF/Alpha.
1678 * Richard Henderson contributed several Alpha optimized assembler function
1679 for arithmetic and string handling.
1681 * Ulrich Drepper has contributed a new set of message catalog functions to
1682 support multiple languages using the <libintl.h> interface, for use with
1683 his new package GNU gettext. Translation volunteers have contributed
1684 catalogs of the library's messages in Spanish, German, and Korean.
1686 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1687 program and the `catgets' function for reading the catalog files it
1688 creates. (The <libintl.h> interface is preferred; we include the
1689 <nl_types.h> interface using `catgets' only for source compatibility with
1690 programs already written to use it.)
1692 * New header file <values.h> gives SVID-compatible names for <limits.h>
1693 constants.
1695 * Various new macros, declarations, and small header files for compatibility
1696 with 4.4 BSD.
1698 * New function `group_member' is a convenient way to check if a process has
1699 a given effective group ID.
1701 * When using GCC 2.7 and later, the socket functions are now declared in a
1702 special way so that passing an argument of type `struct sockaddr_in *',
1703 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1704 `struct sockaddr *' type, does not generate a type-clash warning.
1706 * New function `error' declared in header file <error.h> is a convenient
1707 function for printing error messages and optionally exiting; this is the
1708 canonical function used in GNU programs. The new functions `err', `warn',
1709 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1710 doing the same thing.
1712 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1713 POSIX.2 `glob' function to do ~ and {...} expansion.
1715 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1716 `clearenv' which is used in POSIX.9 is also available.
1718 * New function `getsid' returns session ID number on systems that support it.
1720 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1721 files <db.h> and <mpool.h> provide a rich set of functions for several
1722 types of simple databases stored in memory and in files, and <ndbm.h> is
1723 an old `ndbm'-compatible interface using the `db' functions. Link with
1724 `-ldb' to get these functions.
1726 * New macro `strdupa' copies a string like `strdup', but uses local stack
1727 space from `alloca' instead of dynamic heap space from `malloc'.
1729 * New function `strnlen' is like `strlen' but searches only a given maximum
1730 number of characters for the null terminator. `stpncpy', `strndup' and
1731 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1732 function.
1734 * New function `statfs' in header <sys/statfs.h>.
1736 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1737 provide convenient functions for operating on blocks of null-terminated
1738 strings.
1740 * A new suite of functions in <utmp.h> handle all the details of reading
1741 and writing the utmp file.
1743 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1744 Thorsten Kukuk.
1746 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1747 completely POSIX compliant and also implemented the extended functionality
1748 to handle alternate digit representation and alternate era date formats.
1750 * Ulrich Drepper provided an implementation of the `strptime' function
1751 defined in XPG4.2 which transforms a string into a `struct tm' value.
1753 * Paul Eggert provided the tzselect shell script as part of the timezone
1754 code. The shell script makes it easy to select the correct timezone
1755 specification.
1757 * The implementation of the malloc family of functions is completely replaced
1758 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1759 The implementation uses the mmap function (if available) and it is
1760 optimized for the use in multi threaded programs.
1762 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1763 functions. This new functionality is usable by specifying a special
1764 salt string and it is compatible with implementation on *BSD systems.
1766 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1767 `getsubopt' to handle second level command line options, `bsd_signal'
1768 to access BSD style `signal' functionality, the obsolete `regexp' style
1769 expression matcher.
1771 * the `lchown' function is available on system which support this
1772 functionality.
1774 * The implementation of the shadow password handling function was contributed
1775 by Ulrich Drepper.
1777 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1779 * POSIX.1g support was added. The <sys/select.h> header is available,
1780 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1781 implementation of `getaddrinfo'.
1782 \f
1783 Version 1.09
1785 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1787 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1788 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1790 * The new function `daemon' from 4.4 BSD is useful for server programs that
1791 want to put themselves in the background.
1793 * Joel Sherrill has contributed support for several standalone boards that
1794 run without an operating system.
1796 * `printf', `scanf' and friends now accept a `q' type modifier for long
1797 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1799 * All of the code taken from BSD (notably most of the math and networking
1800 routines) has been updated from the BSD 4.4-Lite release.
1802 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1804 * The new functions `getdomainname' and `setdomainname' fetch or change the
1805 YP/NIS domain name. These are system calls which exist on systems which
1806 have YP (aka NIS).
1808 * The time zone data files have been updated for the latest international
1809 conventions.
1811 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1812 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1813 \f
1814 Version 1.08
1816 * The C library now includes support for Sun RPC, from Sun's free
1817 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1818 are included. (There is still no support for YP.)
1820 * Tom Quinn has contributed a port of the C library to SGI machines running
1821 Irix 4 (mips-sgi-irix4).
1823 * The new `lockf' function is a simplified interface to the locking
1824 facilities of `fcntl', included for compatibility.
1826 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1828 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1830 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1831 compatibility.
1833 * The error message printed by `assert' for a failed assertion now includes
1834 the name of the program (if using GNU ld) and the name of the calling
1835 function (with versions of GCC that support this).
1837 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1839 * The library now includes the <sys/mman.h> header file and memory
1840 management functions `mmap', `munmap', `mprotect', `msync', and
1841 `madvise', on systems that support those facilities.
1843 * The interface for `mcheck' has changed slightly: the function called to
1844 abort the program when an allocation inconsistency is detected now takes
1845 an argument that indicates the type of failure. The new function
1846 `mprobe' lets you request a consistency check for a particular block at
1847 any time (checks are normally done only when you call `free' or `realloc'
1848 on a block).
1850 * It is now possible to easily cross-compile the C library, building on one
1851 system a library to run on another machine and/or operating system. All
1852 you need to do is set the variable `HOST_CC' in `configparms' to the
1853 native compiler for programs to run on the machine you are building on (a
1854 few generator programs are used on Unix systems); set `CC' to the
1855 cross-compiler.
1857 * The new function `fexecve' (only implemented on the GNU system) executes
1858 a program file given a file descriptor already open on the file.
1859 \f
1860 Version 1.07
1862 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1863 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1865 * You can set the variable `libprefix' in `configparms' to specify a prefix
1866 to be prepended to installed library files; this makes it easy to install
1867 the GNU C library to be linked as `-lgnuc' or whatever.
1869 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1870 copies a limited number of characters from a string, and returns the
1871 address of the last character written.
1873 * You no longer need to check for whether the installed `stddef.h' is
1874 compatible with the GNU C library. configure now checks for you.
1876 * You can now define a per-stream `fileno' function to convert the
1877 stream's cookie into an integral file descriptor.
1879 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1880 allocates zero bytes of storage, and returns a unique pointer which
1881 you can pass to `realloc' or `free'. The behavior is undefined if
1882 you dereference this pointer.
1884 * The C library now runs on Sony NEWS m68k machines running either
1885 NewsOS 3 or NewsOS 4.
1887 * The new `syscall' function is a system-dependent primitive function
1888 for invoking system calls. It has the canonical behavior on Unix
1889 systems, including unreliable return values for some calls (such as
1890 `pipe', `fork' and `getppid').
1892 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1893 to `EAGAIN', which is the preferred name. On systems whose kernels
1894 use two distinct codes, the C library now translates EWOULDBLOCK to
1895 EAGAIN in every system call function.
1896 \f
1897 Version 1.06
1899 * The GNU C Library Reference Manual is now distributed with the library.
1900 `make dvi' will produce a DVI file of the printed manual.
1901 `make info' will produce Info files that you can read on line using C-h i
1902 in Emacs or the `info' program.
1903 Please send comments on the manual to bug-glibc-manual@gnu.org.
1905 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1907 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1909 * Jason Merrill has contributed a port to the Sequent Symmetry running
1910 Dynix version 3 (i386-sequent-dynix).
1912 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1913 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1915 * New function `memory_warnings' lets you arrange to get warnings when
1916 malloc is running out of memory to allocate, like Emacs gives you.
1918 * The C library now contains the relocating allocator used in Emacs 19 for
1919 its editing buffers. This allocator (ralloc) minimizes allocation
1920 overhead and fragmentation by moving allocated regions around whenever it
1921 needs to. You always refer to a ralloc'd region with a "handle" (a
1922 pointer to a pointer--an object of type `void **').
1924 * There is a new `printf' format: `%m' gives you the string corresponding
1925 to the error code in `errno'.
1927 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1928 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1929 pass, the `a' modifier says to fill in a `char **' you pass with a
1930 malloc'd string.
1932 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1933 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1934 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1936 * `mkstemp' is a traditional Unix function to atomically create and open a
1937 uniquely-named temporary file.
1938 \f
1939 Version 1.05
1941 * The standard location for the file that says what the local timezone is
1942 has changed again. It is now `/usr/local/etc/localtime' (or more
1943 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1945 * The distribution no longer contains any files with names longer than 14
1946 characters.
1948 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1949 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1951 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1952 \f
1953 Version 1.04
1955 * The configuration process has changed quite a bit. The `configure'
1956 script is now used just like the configuration scripts for other GNU
1957 packages. The `sysdeps' directory hierarchy is much rearranged.
1958 The file `INSTALL' explains the new scheme in detail.
1960 * The header files no longer need to be processed into ANSI C and
1961 traditional C versions. There is just one set of files to install, and
1962 it will work with ANSI or old C compilers (including `gcc -traditional').
1964 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
1965 MIPS DECStation running Ultrix 4.
1967 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
1968 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
1969 made itself into a shared library.
1971 * Yet further improved support for the i386, running 4.3 BSD-like systems
1972 (such as Mach 3 with the Unix single-server), or System V.
1974 * New function `strncasecmp' to do case-insensitive string comparison
1975 with limited length.
1977 * New function `strsep' is a reentrant alternative to `strtok'.
1979 * New functions `scandir' and `alphasort' for searching directories.
1981 * New function `setenv' is a better interface to `putenv'.
1983 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
1984 function for traversing a directory tree.
1986 * The GNU obstack package is now also part of the C library.
1987 The new function `open_obstack_stream' creates a stdio stream that
1988 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
1989 formatted output directly to an obstack.
1991 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
1992 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
1994 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
1996 * The new functions `strfry' and `memfrob' do mysterious and wonderful
1997 things to your strings.
1999 * There are some new test programs: test-fseek, testmb, and testrand.
2001 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2002 These ports are not finished, but are a good starting place for really
2003 supporting those systems.
2005 * `/etc/localtime' is now the standard location for the file that says what
2006 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2007 This follows the general principle that `/etc' is the place for all local
2008 configuration files.
2010 * The C library header files now use `extern "C"' when used by the C++
2011 compiler, so the C library should now work with C++ code.
2013 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2014 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2015 in <strings.h>.)
2017 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2018 function which uses the `merge sort' algorithm, and is said to be
2019 significantly faster than the old GNU `qsort' function. Merge sort is
2020 now the standard `qsort' function. The new algorithm can require a lot
2021 of temporary storage; so, the old sorting function is called when the
2022 required storage is not available.
2024 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2025 provides the Unix `crypt' function, plus some other entry points.
2027 * The code and header files taken from 4.4 BSD have been updated with the
2028 latest files released from Berkeley.
2029 \f
2030 ----------------------------------------------------------------------
2031 Copyright information:
2033 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2035 Permission is granted to anyone to make or distribute verbatim copies
2036 of this document as received, in any medium, provided that the
2037 copyright notice and this permission notice are preserved,
2038 thus giving the recipient permission to redistribute in turn.
2040 Permission is granted to distribute modified versions
2041 of this document, or of portions of it,
2042 under the above conditions, provided also that they
2043 carry prominent notices stating who last changed them.
2044 \f
2045 Local variables:
2046 version-control: never
2047 fill-column: 76
2048 End: