1 GNU C Library NEWS -- history of user-visible changes. 2012-1-27
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:
12 174, 350, 411, 2541, 2547, 2548, 3335, 3976, 3992, 4026, 4108, 4596, 4822,
13 5077, 5461, 5805, 5993, 6884, 6907, 6911, 9739, 9902, 10110, 10135, 10140,
14 10210, 10545, 10716, 11174, 11322, 11365, 11494, 12047, 13058, 13525,
15 13526, 13527, 13528, 13529, 13530, 13531, 13532, 13533, 13547, 13551,
16 13552, 13553, 13555, 13559, 13583, 13618, 13637, 13656, 13695, 13704,
17 13706, 13726, 13738, 13786, 13792, 13806
21 + define static_assert
25 + declare at_quick_exit and quick_exit also for ISO C11
27 + aligned_alloc. NB: The code is deliberately allows the size parameter
28 to not be a multiple of the alignment. This is a moronic requirement
29 in the standard but it is only a requirement on the caller, not the
34 + uchar.h support added
36 + CMPLX, CMPLXF, CMPLXL added
38 Implemented by Ulrich Drepper.
40 * Support for the IA-64 is removed and could live in ports.
42 * Remove support for anything but ELF binary format
44 * Checking versions of poll, ppoll added.
45 Implemented by Ulrich Drepper.
47 * More generic and 64-bit performance optimizations to math functions.
48 Implemented by Ulrich Drepper.
52 * The following bugs are resolved with this release:
54 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
55 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
56 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
57 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
58 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
59 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
60 13484, 13506, 13515, 13523, 13524, 13538, 13540
62 * New program pldd to list loaded object of a process
63 Implemented by Ulrich Drepper.
65 * Add nss_db support back to glibc. No more dependency on Berkeley db
66 and support for initgroups lookups.
67 Implemented by Ulrich Drepper.
69 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
72 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
75 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
77 Contributed by Liubov Dmitrieva.
79 * Optimized strchr and strrchr for SSE on x86-32.
80 Contributed by Liubov Dmitrieva.
82 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
83 for x86-64 and x86-32.
84 Contributed by Liubov Dmitrieva.
86 * New interfaces: scandirat, scandirat64
87 Implemented by Ulrich Drepper.
89 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
90 Implemented by Ulrich Drepper.
92 * nscd now also caches the netgroup database.
93 Implemented by Ulrich Drepper.
95 * Integrate libm with gcc's -ffinite-math-only option.
96 Implemented by Ulrich Drepper.
98 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
99 to math functions. Implemented by Ulrich Drepper.
101 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
102 Implemented by Ulrich Drepper.
104 * New Linux interfaces: process_vm_readv, process_vm_writev
106 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
107 Implemented by Ulrich Drepper.
109 * Optimized nearbyint and strcasecmp for PPC.
110 Implemented by Adhemerval Zanella.
112 * New locales: bho_IN, unm_US, es_CU, ta_LK
116 * The following bugs are resolved with this release:
118 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
119 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
120 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
121 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
122 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
123 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
124 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
125 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
126 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
127 12795, 12811, 12813, 12814, 12841
129 * The RPC implementation in libc is obsoleted. Old programs keep working
130 but new programs cannot be linked with the routines in libc anymore.
131 Programs in need of RPC functionality must be linked against TI-RPC.
132 The TI-RPC implementation is IPv6 enabled and there are other benefits.
134 Visible changes of this change include (obviously) the inability to link
135 programs using RPC functions without referencing the TI-RPC library and the
136 removal of the RPC headers from the glibc headers.
137 Implemented by Ulrich Drepper.
139 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
140 syncfs, setns, sendmmsg
142 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
143 yue_HK, lij_IT, mhr_RU
145 * New encodings: CP770, CP771, CP772, CP773, CP774
147 * New program sotruss to trace calls through PLTs
148 Implemented by Ulrich Drepper.
150 * The malloc hook implementation is marked deprecated and will be removed
151 from the default implementation in the next version. The design never
152 worked ever since the introduction of threads. Even programs which do
153 not create threads themselves can use multiple threads created internally.
157 * The following bugs are resolved with this release:
159 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
160 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
161 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
162 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
165 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
167 * POWER7 optimizations: memset, memcmp, strncmp
169 * New optimized string functions for x86-64: strnlen (SSE2),
170 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
171 Implemented by Ulrich Drepper.
175 * The following bugs are resolved with this release:
177 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
178 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
179 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
180 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
181 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
182 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
183 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
184 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
186 * New interfaces: pthread_getname_np, pthread_setname_np
188 * New Linux interface: recvmmsg
190 * STT_GNU_IFUNC implemented for Sparc by David Miller.
192 * The dynamic linker now recognizes supported ABI versions from the
193 EI_ABIVERSION field in the ELF header.
194 Implemented by Ulrich Drepper.
196 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
197 will not be used to fill in password fields in the passwd.byname replies.
198 Instead it is used to synthesize the shadow.byname table, should it be
199 missing. This is a useful mode in some installations involving Solaris.
200 Implemented by Ulrich Drepper.
202 * New locales: kok_IN, sq_MK, cv_RU
206 * The following bugs are resolved with this release:
208 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
209 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
210 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
211 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
212 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
213 10789, 10817, 10823, 10840, 10847
215 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
217 Implemented by Ulrich Drepper.
219 * Checking version of longjmp added that fails if an uninitialized stack
220 frame would be created. Implemented by Ulrich Drepper.
222 * STT_GNU_IFUNC is now supported in static executables.
223 Implemented by H.J. Lu.
225 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
227 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
228 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
229 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
230 Contributed by H.J. Lu.
232 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
233 Implemented by Ulrich Drepper.
235 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
237 Contributed by H.J. Lu.
239 * Support for fma instruction in AVX on x86-64.
240 Implemented by H.J. Lu and Ulrich Drepper.
242 * AVX support in x86-64 auditing support in ld.so.
243 Implemented by H.J. Lu.
245 * STB_GNU_UNIQUE support added.
246 Implemented by Ulrich Drepper.
248 * Implement second fallback mode for optimized DNS lookup for even more
249 broken environments. If two requests from the same port are not
250 handled correctly close the socket and open a new one before sending
251 the second request. The 'single-request-reopen' option in /etc/resolv.conf
252 can be used to select this mode right away, instead of rediscovering the
253 necessity is every process again.
254 Implemented by Ulrich Drepper.
256 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
257 Implemented by Adam Tkac.
259 * Optimized iconv conversions for S390x.
260 Implemented by Andreas Krebbel.
262 * Using condvars with PI mutexes is now more efficient due to kernel
263 support for requeueing to PI futexes. NPTL support added for x86-64.
264 Implemented by Ulrich Drepper.
266 * New locales: ps_AF, my_MM
270 * The following bugs are resolved with this release:
272 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
273 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
274 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
275 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
276 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
278 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
279 Implemented by Ulrich Drepper.
281 * New Linux interfaces: accept4, fallocate, fallocate64.
282 Implemented by Ulrich Drepper.
284 * Correct declarations of string function when used in C++ code. This
285 could lead to compile errors for invalid C++ code.
287 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
290 * New POSIX 2008 interface: psiginfo
291 Implemented by Ulrich Drepper.
293 * New ISO C++1x interfaces: quick_exit, at_quick_exit
294 Implemented by Ulrich Drepper.
296 * Support for selecting between multiple function definitions at runtime
297 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
299 * The libcrypt library can now use the hash function implementations in
300 NSS. Implemented by Ulrich Drepper.
302 * The malloc implementation can be compiled to be less memory efficient
303 but higher performing in multi-threaded programs.
304 Implemented by Ulrich Drepper.
306 * New locales: nan_TW@latin, ks_IN
308 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
309 Implemented by Ulrich Drepper.
311 * Extended printf hook support. It is possible to use user-defined types
312 and extend existing format specifiers.
313 Implemented by Ulrich Drepper.
315 * Handling for group shadow files has been added.
316 Implemented by Ulrich Drepper.
318 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
319 servers (the case, e.g., for some people using the built-in DNS
320 server in ADSL modems/routers). There is a once-per-process timeout
321 in case of a broken server. To avoid it, users can run nscd or put
322 'options single-request' in /etc/resolv.conf.
323 Implemented by Ulrich Drepper.
327 * The following bugs are resolved with this release:
329 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
330 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
331 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
332 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
333 6968, 6974, 6980, 6995, 7008, 7009, 7029
335 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
336 up at the same time. Implemented by Ulrich Drepper.
338 * TLS descriptors for LD and GD on x86 and x86-64.
339 Implemented by Alexandre Oliva.
341 * getaddrinfo now handles DCCP and UDPlite.
342 Implemented by Ulrich Drepper.
344 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
345 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
346 Implemented by Ulrich Drepper.
348 * New implementation of memmem, strstr, and strcasestr which is O(n).
349 Implemented by Eric Blake.
351 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
353 * Implement "e" option for popen to open file descriptor with the
354 close-on-exec flag set. Implemented by Ulrich Drepper.
356 * Implement "b" mode for fmemopen. In this mode writes writes don't
357 implicitly add a NUL byte and seeks from the end of the buffer really
358 use the buffer end, not the string length as the basis.
359 Implemented by Ulrich Drepper.
361 * Many functions, exported and internal, now atomically set the close-on-exec
362 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
364 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
366 Implemented by Pravin Satpute.
368 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
372 * The following bugs are resolved with this release:
374 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
375 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
376 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
377 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
378 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
379 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
380 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
382 * New locales: bo_CN, bo_IN, shs_CA.
384 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
386 * Sorting rules for some Indian languages (Devanagari and Gujarati).
387 Implemented by Pravin Satpute.
389 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
391 * nscd caches now all timeouts for DNS entries
392 Implemented by Ulrich Drepper.
394 * nscd is more efficient and wakes up less often.
395 Implemented by Ulrich Drepper.
397 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
398 vdprintf, and obstack_vprintf.
399 Implemented by Jakub Jelinek.
401 * Faster memset for x86-64.
402 Implemented by Harsha Jagasia and H.J. Lu.
404 * Faster memcpy on x86.
405 Implemented by Ulrich Drepper.
407 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
408 Implemented by Ulrich Drepper.
410 * Faster sqrt and sqrtf implemention for some PPC variants.
411 Implemented by Stephen Munroe.
415 * The following bugs are resolved with this release:
417 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
418 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
419 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
420 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
421 5071, 5103, 5104, 5112, 5113, 5184, 5186
423 * More checking functions: fread, fread_unlocked, open*, mq_open.
424 Implemented by Jakub Jelinek and Ulrich Drepper.
426 * Extend fortification to C++. Implemented by Jakub Jelinek.
428 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
429 by not recognizing 'a' as a modifier when those specs are requested.
430 Implemented by Jakub Jelinek.
432 * PPC optimizations to math and string functions.
433 Implemented by Steven Munroe.
435 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
436 options to be passed. Implemented by Ulrich Drepper.
438 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
440 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
441 Implemented by Ulrich Drepper.
443 * Handle private futexes in the NPTL implementation.
444 Implemented by Jakub Jelinek and Ulrich Drepper.
446 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
447 Implemented by Roland McGrath and Ulrich Drepper.
449 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
451 * SHA-256 and SHA-512 based password encryption.
452 Implemented by Ulrich Drepper.
454 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
455 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
458 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
459 Implemented by Ulrich Drepper.
463 * The following bugs are resolved with this release:
465 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
466 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
467 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
468 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
469 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
470 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
471 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
474 * New Linux interfaces: epoll_pwait, sched_getcpu.
476 * New generic interfaces: strerror_l.
478 * nscd can now cache the services database. Implemented by Ulrich Drepper.
482 * The following bugs are resolved with this release:
484 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
485 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
486 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
487 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
488 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
489 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
490 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
491 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
492 3225, 3251, 3252, 3253, 3273
494 * For Linux, the sorting of addresses returned by getaddrinfo now also
495 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
496 Implemented by Ulrich Drepper.
498 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
499 Implemented by Ulrich Drepper.
501 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
503 * New iconv module for MIK. Contributed by Alexander Shopov.
505 * For sites with broken group and/or passwd database, the auto-propagate
506 option of nscd can prevent creating ID lookup entries from the results
507 of a name lookup and vice versa. This usually is no problem but some
508 site might have problems with the default behavior.
509 Implemented by Ulrich Drepper.
511 * Iterating over entire database in NIS can be slow. With the
512 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
513 to trade time for memory. The entire database will be read at once.
514 Implemented by Ulrich Drepper.
516 * The interfaces introduced in RFC 3542 have been implemented by
519 * Support for the new ELF hash table format was added by Ulrich Drepper.
521 * Support for priority inheritance mutexes added by Jakub Jelinek and
524 * Support for priority protected mutexes added by Jakub Jelinek.
526 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
527 or_IN, csb_PL, fy_NL, sr_ME.
531 * More overflow detection functions.
533 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
534 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
536 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
537 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
538 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
539 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
540 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
541 by Masahide Washizawa.
543 * It is now possible to install audit libraries for the dynamic linker using
544 LD_AUDIT. Implemented by Ulrich Drepper.
546 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
547 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
548 For a libc and libpthread that works well on Linux 2.4 kernels, we
549 recommend using the stable 2.3 branch.
551 * The new function open_wmemstream acts like open_memstream,
552 but uses a wchar_t wide character buffer.
554 * The new function ppoll is an improved version of poll, similar to pselect.
556 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
557 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
558 renameat, unlinkat, linkat, symlinkat, readlinkat.
560 * New Linux kernel system calls: unshare,
561 inotify_init, inotify_add_watch, inotify_rm_watch.
563 * The euidaccess function is now also known by the alias eaccess,
564 for compatibility with some other systems.
566 * Timezone data updated to 2006b version.
570 * The following bugs are resolved with this release:
572 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
573 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
574 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
575 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
576 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
577 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
579 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
581 * As of this release, GCC 4 can be used to compile the C Library.
583 * Timezone data updated to 2005m version.
587 * The following bugs are resolved with this release:
589 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
590 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
591 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
592 777, 787, 821, 822, 823, 825
594 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
598 * Support for RFC 3678. Real implementations exist only for Linux so far.
599 Implemented by Ulrich Drepper.
601 * nscd can now cache entries persistently. Expiring entries are reloaded.
602 For speedups the cache can be shared in memory with client processes.
603 Implemented by Ulrich Drepper.
605 * nscd can now perform SELinux checks.
606 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
608 * getaddrinfo queries are now cached. Canonical name lookup is performed
610 Implemented by Ulrich Drepper.
612 * The nothrow function attribute is used when headers are used by gcc when
613 compiling C code. This can avoid significant amounts of exception
616 * The malloc functions perform more error checking and are stricter when
617 it comes to reacting on errors. The default action is to terminate
618 the process after showing an error message. Implemented by Ulrich Drepper.
620 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
621 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
623 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
624 namespaces using the new function dlmopen(). This feature is of course,
625 like most other dynamic loading functionality, not available in statically
626 linked applications. Implemented by Ulrich Drepper.
628 * Low-overhead boundary checking variants of string and some stdio functions
629 were added. These are to be used in conjunction with a gcc patch by
630 Jakub Jelinek which adds calls to these functions if possible.
631 Implemented by Jakub Jelinek and Ulrich Drepper.
633 * Old code for several operating systems and machine architectures that
634 have not been in working condition in a long time have been removed from
635 the main source tree maintained by the GNU C Library's maintainers.
636 These files are now reside in the separate `ports' source module
637 that is usable as an add-on when building the library.
641 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
642 interrogate the dynamic linker, compatible with the Solaris interface.
644 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
645 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
647 * getifaddrs now uses the netlink interface on Linux to get its information.
648 Implemented by Thorsten Kukuk.
650 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
651 Implemented by Ulrich Drepper.
653 * support for non-executable stacks on x86 has been added. Changes mostly
656 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
659 * getaddrinfo now performs destination address selection according to
664 * Thread-safe interfaces for many functions that access locale data
665 were added in version 2.3, but these features were omitted from NEWS.
666 Many functions have variants with an `_l' suffix that take a `locale_t'
667 object as a parameter rather than consulting the current locale.
668 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
669 create and maintain `locale_t' objects. Additionally, the new function
670 `uselocale' sets "the current locale" (as used by functions not so
671 parameterized) set for an individual thread. These features were added
672 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
674 * The functions getresuid, getresgid, setresuid, and setresgid, which
675 have long been available on Linux, are now declared in <unistd.h>
676 and are now also available on the Hurd.
678 * ELF thread-local storage support (TLS) now works on x86-64.
680 * The new dynamic string token $LIB is expanded in shared library names.
681 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
683 * Aldy Hernandez contributed complete software floating point support for
684 PowerPC machines with no FPU.
686 * fexecve is implemented on Linux.
688 * The `btowc' function should work at least twice as fast due to
689 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
691 * With approriate thread add-ons cancelable functions are now implemented
692 in libc.so as well. No need to call the function in libpthread. This
693 change allowed to finally disable the incorrect and expensive handling
694 of weak definition in ld.so.
696 * Yet more PLT entries in libc.so have been removed. We finally arrived
697 at the bare minimum. Startup times improved appropriately.
699 * Support for the new Linux/x86 system call interface was added. The
700 AT_SYSINFO auxiliary vector entry is recognized and handled.
704 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
707 * iconv (the program and the interface) now accepts empty names (excluding
708 options like //TRANSLIT) to mean "use charset of current locale".
710 * localedef can now transliterate characters in strings which are not in
711 the provided charmap. The information from the input locale is used.
713 * Prelinking support was added for ELF targets. This requires additional
714 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
716 * Read-only stdio streams now use mmap to speed up operation by eliminating
717 copying and buffer underflows. To use add 'm' to the mode string of
718 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
720 * The malloc functions were completely rewritten by Wolfram Gloger based
721 on Doug Lea's malloc-2.7.0.c.
723 * Isamu Hasegawa contributed a completely new and POSIX-conformant
724 implementation of regex.
726 * Bruno Haible upgraded the iconv and locale implementation to support
729 * Contents of the LC_* and LANG environment variables in the CEN style are
730 not recognized anymore. It never was used. Change by Ulrich Drepper.
732 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
733 thread-local storage (TLS) ABI on some platforms.
734 Changes by Ulrich Drepper. SH support by Kaz Kojima.
736 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
737 EUC-JISX0213, and TSCII.
739 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
740 BSD-compatible interface for getting all network interface addresses.
741 Implementation for IPv4 by Roland McGrath.
743 * Loading of locale data is faster due to the introduction of a locale
744 archive. Implemented by Roland McGrath and Ulrich Drepper.
746 * Startup times are significantly reduced by not using exported functions
747 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
750 * Steven Munroe contributed a port to PowerPC64/Linux.
754 * The Hurd now uses the GNU libio implementation of stdio rather than the
755 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
757 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
758 with the same behavior as the Linux system call of the same name.
762 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
763 128-bit long double format.
765 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
766 IBM1161, and IBM1162 charsets.
768 * Andreas Jaeger contributed a port to x86-64/Linux.
770 * Peter Bruin contributed a port to PowerPC/Hurd.
772 * libc functions using I/O streams now can handle wide-oriented streams
775 * optimizations in the dynamic linker. Binaries created by recent binutils
776 versions start up quicker due to reduced time spent on relocations.
778 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
782 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
783 asinh, atanh, j0 for the 128-bit long double format.
785 * Bruno Haible updated all the code handling Unicode in some form to
788 * Speed of regex for single-byte locales is back to previous levels.
789 Patch by Isamu Hasegawa.
791 * Alpha, SPARC, and IA-64 now also using floating stacks.
793 * Startup time of internationalized applications greatly improved through
794 iconv cache. Use iconvconfig to generate the cache file.
795 Contributed by Ulrich Drepper.
797 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
798 severe performance problems. Patch by David Mosberger.
800 * The Hurd port got a lot more functionality like AIO, various stdio
801 extensions, etc. Mainly done by Roland McGrath.
803 * mtrace can now lookup symbols in shared libraries.
807 * Intel's IA-64 math library is largely integrated. It provides fast and
808 accurate implementatations for most basic and standard math functions
809 in float, double, and long double format.
811 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
812 and asin for the 96-bit long double format and asin, log, tan for the
813 128-bit long double format.
815 * The beginning of a last-bit accurate math library by IBM Haifa were added.
816 The basic double functions exist today. Contributed by Abraham Ziv
817 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
818 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
820 * An asynchronous name lookup library was added. The interface is designed
821 after POSIX AIO. The proposal was circulated beforehand to get comments.
822 No negative ones came in. Implemented by Ulrich Drepper.
824 * Port to S390/64bit contributed by Martin Schwidefsky
825 <schwidefsky@de.ibm.com>.
827 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
828 of functions for Linux/IA-64.
830 * The RPC code is now thread safe. Threads can now use the same service
831 of different services at the same time. Patch by Eric Norum
832 <eric.norum@usask.ca> with some help by Ulrich Drepper.
834 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
835 family of functions for Linux/S390.
837 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
838 of functions for Linux/x86.
840 * Port to Linux/CRIS contributed by Axis Communications.
844 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
845 we can now check for namespace violations and missing declarations. The
846 result is that almost all headers are now Unix-compliant (as defined in
847 the upcoming XPG6). The negative side is that some programs might need
848 corrections, too, if they depend on the incorrect form of the headers in
849 previous versions which defined too many symbols and included too many
852 * regex now handles multibyte character sets correctly.
853 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
855 * iconv (the program) does now conform to the upcoming XPG6 and handles
856 charmaps. Instead of the charset names the path of charmaps can be
857 provided and the conversion happens based on this data.
858 Contributed by Ulrich Drepper.
860 * The locale program now provides detailed information about the installed
865 only lists the names of the supported locales
869 provides details such as country, language, and codeset name.
870 Contributed by Ulrich Drepper.
874 * The gencat program now parses the input file according to the charset
875 selected by the LC_CTYPE category. This is important for stateful
876 character sets. To make generating catalogs easier there is a way
877 to overwrite the charset selected by the locale: before the first
878 message or $ quote line the catalog can contain a line like
882 to select the charset (ISO-8859-2 in this case).
884 Implemented by Shinya Hanataka and Ulrich Drepper.
886 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
887 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
888 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
890 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
891 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
893 * The LANGUAGE environment variable is now ignored unless the locale is
894 changed from the default "C" locale.
896 * The usual bug fixes.
900 * Greg McGary added runtime support for bounds checking using gcc's
901 new -fbounded-pointers option. ix86 target is complete. PowerPC
904 * Thorsten Kukuk added secure mode support to nscd.
906 * The Berkeley db libraries have been removed.
908 Related, the nss_db module is now in a separate package since it
909 obviously requires a database library being available.
911 * Wide character I/O streams implemented by Ulrich Drepper.
913 * Functions from the extended socket API added by Ulrich Drepper.
915 * Functions feenableexcept and fedisableexcept to control the
916 behaviour of individual exceptions have been added by Andreas Jaeger.
918 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
920 * The resolver code has been updated from bind 8.2.3-T5B which supports
921 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
924 This change could in some situations effect backward compatibility. Since
925 now `_res' is a thread-local instead of a global variable, modifying it
926 in one thread does not have any effect in other threads.
928 The resolver library was also extended to allow IPv6 as the transport
929 protocol for the requests. This work was done by Stig Venaas.
931 * Compatibility code for K&R C compilers has been removed from the
932 header files. A ISO C compiler is needed to use the library
933 (conforming to either C89 or C99 standard).
935 * Complete rewrite of the localedef program to support multibyte character
936 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
937 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
938 Implemented by Ulrich Drepper.
940 Bruno Haible significantly improved the generation and use of the data
941 structures for the wide character tables.
943 * Plural handling in gettext implemented by Ulrich Drepper.
945 * The utmp daemon has been removed.
947 * The port to MIPS-Linux has been finished by Andreas Jaeger.
949 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
952 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
954 * POSIX barriers implemented by Kaz Kylheku.
956 * POSIX spawn function family implemented by Ulrich Drepper.
958 * POSIX spinlocks are now available.
960 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
962 * the configure option --enable-kernel=X.Y.Z allows to strip out
963 compatibility for kernel versions before X.Y.Z. This is currently only
964 implemented for Linux.
966 * the sockaddr_in6 structure changed. The IPv6 working group added a new
967 field sin6_scope_id. This means that all programs using IPv6 should be
968 recompiled. Don't expect binary compatibility with previous glibc
971 * various conversion modules for IBM character sets contributed by
974 * IA-64 port by Jes Sorensen and HJ Lu.
976 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
977 Compiling the GNU C Library for Linux/ia64
978 ******************************************
980 Please refer to the file INSTALL in the same directory as you found
981 this file for general information about configuring and compiling
984 For general inquiries about glibc under Linux/ia64 please use the
985 following mailing list linux-ia64@linuxia64.org or one of the relevant
988 Recommended Tools for Compilation
989 =================================
991 In order for glibc-2.2 to build correctly on the ia64 you need at
992 least the following versions of the GNU tools (the :
994 * The Cygnus toolchain snapshot for the ia64 as of August 4
995 including the provided set of patches. It is however recommend
996 you use the October 24 toolchain snapshot or a more recent version.
998 OR alternatively you can try the following (the Cygnus toolchain is
999 the recommended solution):
1001 * GCC and binutils, GAS and GNU LD out of CVS from
1002 sources.redhat.com as of August 28, 2000 or later. The CVS tree
1003 may require special patches to work properly on the ia64.
1005 Configuring and compiling GNU Libc for Linux/ia64
1006 =================================================
1008 The library requires Linux kernel version 2.4.0-test4-000728 or
1009 later to funtion properly. Besides that it support for debug libraries
1010 is currently untested. Hence the following options
1011 are required for configuring the library:
1013 --disable-debug --enable-kernel=2.4.0
1015 It is also important that you make sure the library picks up the
1016 appropriate kernel header files, if you do not have recent enough
1017 kernel headers in /usr/src/linux/include, you should use the
1018 --with-headers=<path> option to specify the location.
1020 As an example I personally use the following options to configure
1025 --enable-kernel=2.4.0
1027 --enable-add-ons=yes
1029 --with-headers=/home/jes/linux/include
1034 Jes Sorensen <jes@linuxcare.com>,
1036 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1050 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1052 * New xdr functions are added; some rpc functions are now 64bit clean.
1054 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1056 * Fixed known incompatibilities with glibc 2.0.
1058 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1060 * Optimized a number of functions (especially the ELF dynamic loader).
1062 * Update timezone data files.
1064 * lots of charmaps corrections
1066 * some new locale definitions and charmaps
1071 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1072 conform to POSIX member type requirements. Symbol versions have been
1073 adjusted as needed within the library, and for direct use by applications,
1074 but there is potential for problems if third-party libraries use
1075 struct timeval as part of their interface. This does not present
1076 a problem for X and other "essential" system libraries.
1078 * An additional locale model to support C++ Standard Library locale
1079 model and probably more was implemented by Ulrich Drepper.
1081 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1084 * Miles Bader provided the `argp' function family to support hierachical
1085 command line argument parsing, layered on top of getopt.
1087 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1089 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1092 * scanf recognizes the %a and %A format for scanning floating point numbers.
1094 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1095 information and interfaces for the available integer types.
1097 * about 130 new math functions were added to implement the ISO C9x math
1100 * the new header <complex.h> contains definitions of the complex math
1101 functions from ISO C 9X.
1103 * the new header <tgmath.h> defines generic macros to use complex or
1104 real valued functions.
1106 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1108 * Andreas Jaeger provided a test suite for the math library.
1110 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1112 * Ulrich Drepper added character set conversion functions (iconv).
1114 * Optimized string functions have been added.
1116 * The localedata addon is now part of glibc.
1118 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1120 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1121 daemon for NSS (nscd).
1123 Missing a better place here are some numbers on improvements. Under
1124 Linux 2.1.125 un-tar-ing the kernel sources takes
1128 using local files 12.19s 6.88s 22.91s
1130 using NIS 13.92s 8.91s 26.34s
1132 using NIS & nscd 10.37s 7.34s 25.30s
1134 using NIS+ 27.57s 30.37s 640.46s
1136 using NIS+ & nscd 10.25s 7.83s 26.51s
1138 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1140 Keep in mind that non-namelookup related operations dominate above times.
1141 It was just a common complain that using NIS+ unpacking the kernel is
1144 [1] The old nscd implementation is not available anymore since it was
1145 distributed with glibc up to version 2.0.98 and thus is now replaced.
1147 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1149 * Mark Kettenis provided a Hesiod NSS module.
1151 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1152 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1154 * rcmd can now handle netgroups (Dick Streefland).
1156 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1159 * Support for the IPv6 protocol has been added to the socket API, as per the
1160 latest draft standards.
1162 * Support for Linux 2.2 has been added.
1164 * Interface changes relative to the latest 2.0.x release:
1165 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1166 addseverity NEW: Unix98
1167 alphasort64 NEW: LFS
1168 argp_err_exit_status NEW: argp, GNU ext
1169 argp_error NEW: argp, GNU ext
1170 argp_failure NEW: argp, GNU ext
1171 argp_help NEW: argp, GNU ext
1172 argp_parse NEW: argp, GNU ext
1173 argp_program_bug_address NEW: argp, GNU ext
1174 argp_program_version NEW: argp, GNU ext
1175 argp_program_version_hook NEW: argp, GNU ext
1176 argp_state_help NEW: argp, GNU ext
1177 argp_usage NEW: argp, GNU ext
1178 authdes_create NEW: Secure RPC
1179 authdes_getucred NEW: Secure RPC
1180 authdes_pk_create NEW: Secure RPC
1181 backtrace NEW: GNU ext.
1182 backtrace_symbols NEW: GNU ext.
1183 backtrace_symbols_fd NEW: GNU ext.
1185 cacosf NEW: ISO C 9x
1186 cacosh NEW: ISO C 9x
1187 cacoshf NEW: ISO C 9x
1188 cacoshl NEW: ISO C 9x
1189 cacosl NEW: ISO C 9x
1196 casinf NEW: ISO C 9x
1197 casinh NEW: ISO C 9x
1198 casinhf NEW: ISO C 9x
1199 casinhl NEW: ISO C 9x
1200 casinl NEW: ISO C 9x
1202 catanf NEW: ISO C 9x
1203 catanh NEW: ISO C 9x
1204 catanhf NEW: ISO C 9x
1205 catanhl NEW: ISO C 9x
1206 catanl NEW: ISO C 9x
1207 cbc_crypt NEW: Secure RPC
1211 ccoshf NEW: ISO C 9x
1212 ccoshl NEW: ISO C 9x
1218 cimagf NEW: ISO C 9x
1219 cimagl NEW: ISO C 9x
1220 clearerr_locked REMOVED
1221 clntunix_create NEW: sunrpc ext
1223 clog10 NEW: ISO C 9x
1224 clog10f NEW: ISO C 9x
1225 clog10l NEW: ISO C 9x
1235 cprojf NEW: ISO C 9x
1236 cprojl NEW: ISO C 9x
1238 crealf NEW: ISO C 9x
1239 creall NEW: ISO C 9x
1244 csinhf NEW: ISO C 9x
1245 csinhl NEW: ISO C 9x
1248 csqrtf NEW: ISO C 9x
1249 csqrtl NEW: ISO C 9x
1253 ctanhf NEW: ISO C 9x
1254 ctanhl NEW: ISO C 9x
1256 des_setparity NEW: Secure RPC
1257 ecb_crypt NEW: Secure RPC
1258 endutxent NEW: Unix98
1260 exp10f NEW: ISO C 9x
1261 exp10l NEW: ISO C 9x
1265 fattach NEW: STREAMS
1266 fdetach NEW: STREAMS
1270 feclearexcept NEW: ISO C 9x
1271 fegetenv NEW: ISO C 9x
1272 fegetexceptflag NEW: ISO C 9x
1273 fegetround NEW: ISO C 9x
1274 feholdexcept NEW: ISO C 9x
1276 feraiseexcept NEW: ISO C 9x
1277 ferror_locked REMOVED
1278 fesetenv NEW: ISO C 9x
1279 fesetexceptflag NEW: ISO C 9x
1280 fesetround NEW: ISO C 9x
1281 fetestexcept NEW: ISO C 9x
1282 feupdateenv NEW: ISO C 9x
1283 fflush_locked REMOVED
1287 fgets_unlocked NEW: GNU ext.
1288 fileno_locked REMOVED
1300 fputc_locked REMOVED
1301 fputs_unlocked NEW: GNU ext.
1302 fread_unlocked NEW: GNU ext.
1307 fstatvfs NEW: Unix98
1311 ftruncate64 NEW: LFS
1313 fwrite_unlocked NEW: GNU ext.
1314 gai_strerror NEW: IPv6
1318 getchar_locked REMOVED
1320 getdate_err NEW: Unix98
1321 getdate_r NEW: GNU ext.
1323 getnameinfo NEW: IPv6
1324 getnetname NEW: Secure RPC
1325 getpmsg NEW: STREAMS
1326 getpt NEW: Unix98 PTY
1327 getrlimit64 NEW: LFS
1328 getutxent NEW: Unix98
1329 getutxid NEW: Unix98
1330 getutxline NEW: Unix98
1331 glob64 NEW: GNU ext.
1332 globfree64 NEW: GNU ext.
1333 gnu_get_libc_release NEW: GNU ext.
1334 gnu_get_libc_version NEW: GNU ext.
1335 grantpt NEW: Unix98 PTY
1336 host2netname NEW: Secure RPC
1338 iconv_close NEW: iconv
1339 iconv_open NEW: iconv
1340 if_freenameindex NEW: IPv6
1341 if_indextoname NEW: IPv6
1342 if_nameindex NEW: IPv6
1343 if_nametoindex NEW: IPv6
1344 in6addr_any NEW: IPv6
1345 in6addr_loopback NEW: IPv6
1346 inet6_isipv4mapped NEW: IPv6
1347 isastream NEW: STREAMS
1348 iswblank NEW: GNU ext.
1349 key_decryptsession NEW: Secure RPC
1350 key_decryptsession_pk NEW: Secure RPC
1351 key_encryptsession NEW: Secure RPC
1352 key_encryptsession_pk NEW: Secure RPC
1353 key_gendes NEW: Secure RPC
1354 key_get_conv NEW: Secure RPC
1355 key_secretkey_is_set NEW: Secure RPC
1356 key_setnet NEW: Secure RPC
1357 key_setsecret NEW: Secure RPC
1358 llrint NEW: ISO C 9x
1359 llrintf NEW: ISO C 9x
1360 llrintl NEW: ISO C 9x
1361 llround NEW: ISO C 9x
1362 llroundf NEW: ISO C 9x
1363 llroundl NEW: ISO C 9x
1368 lrintf NEW: ISO C 9x
1369 lrintl NEW: ISO C 9x
1370 lround NEW: ISO C 9x
1371 lroundf NEW: ISO C 9x
1372 lroundl NEW: ISO C 9x
1374 makecontext NEW: Unix98
1375 mempcpy NEW: GNU ext.
1378 modify_ldt NEW: kernel
1382 nearbyint NEW: ISO C 9x
1383 nearbyintf NEW: ISO C 9x
1384 nearbyintl NEW: ISO C 9x
1385 netname2host NEW: Secure RPC
1386 netname2user NEW: Secure RPC
1387 nexttoward NEW: ISO C 9x
1388 nexttowardf NEW: ISO C 9x
1389 nexttowardl NEW: ISO C 9x
1393 passwd2des NEW: Secure RPC
1395 pow10f NEW: GNU ext.
1396 pow10l NEW: GNU ext.
1399 printf_size NEW: GNU ext.
1400 printf_size_info NEW: GNU ext.
1401 profil_counter REMOVED
1402 pthread_mutexattr_getkind_np REPLACED
1403 pthread_mutexattr_setkind_np REPLACED
1404 ptsname NEW: Unix98 PTY
1405 ptsname_r NEW: Unix98 PTY
1407 putchar_locked REMOVED
1408 putgrent NEW: GNU ext.
1410 putpmsg NEW: STREAMS
1411 pututxline NEW: Unix98
1415 readdir64_r NEW: LFS
1416 remquo NEW: ISO C 9x
1417 remquof NEW: ISO C 9x
1418 remquol NEW: ISO C 9x
1420 roundf NEW: ISO C 9x
1421 roundl NEW: ISO C 9x
1423 scalbln NEW: ISO C 9x
1424 scalblnf NEW: ISO C 9x
1425 scalblnl NEW: ISO C 9x
1427 sendfile NEW: kernel
1428 setcontext NEW: Unix98
1429 setrlimit64 NEW: LFS
1430 setutxent NEW: Unix98
1432 sigignore NEW: Unix98
1433 sigqueue NEW: POSIX.1b
1434 sigrelse NEW: Unix98
1435 sigset NEW: POSIX.1b
1436 sigtimedwait NEW: POSIX.1b
1437 sigwaitinfo NEW: POSIX.1b
1438 sincos NEW: GNU ext.
1439 sincosf NEW: GNU ext.
1440 sincosl NEW: GNU ext.
1444 strcasestr NEW: GNU ext.
1445 strtoimax NEW: ISO C 9x
1446 strtoumax NEW: ISO C 9x
1447 strverscmp NEW: GNU ext.
1448 svcauthdes_stats NEW: Secure RPC
1449 svcunix_create NEW: sunrpc etx
1450 svcunixfd_create NEW: sunrpc ext
1451 swapcontext NEW: Unix98
1452 tcgetsid NEW: Unix98 PTY
1453 tdestroy NEW: GNU ext.
1454 tgamma NEW: ISO C 9x
1455 tgammaf NEW: ISO C 9x
1456 tgammal NEW: ISO C 9x
1460 truncf NEW: ISO C 9x
1461 truncl NEW: ISO C 9x
1463 unlockpt NEW: Unix98 PTY
1464 updwtmpx NEW: Unix98
1465 user2netname NEW: Secure RPC
1466 utmpxname NEW: Unix98
1467 versionsort NEW: GNU ext.
1468 versionsort64 NEW: GNU ext.
1470 wcscasecmp NEW: GNU ext.
1471 wcsncasecmp NEW: GNU ext.
1472 wcsnlen NEW: GNU ext.
1473 wcstoimax NEW: ISO C 9x
1474 wcstoll NEW: ISO C 9x
1475 wcstoull NEW: ISO C 9x
1476 wcstoumax NEW: ISO C 9x
1478 wordexp NEW: POSIX.2
1479 wordfree NEW: POSIX.2
1480 write_profiling REMOVED
1481 xdecrypt NEW: Secure RPC
1482 xdr_authdes_cred NEW: Secure RPC
1483 xdr_authdes_verf NEW: Secure RPC
1484 xdr_cryptkeyarg NEW: Secure RPC
1485 xdr_cryptkeyarg2 NEW: Secure RPC
1486 xdr_cryptkeyres NEW: Secure RPC
1487 xdr_getcredres NEW: Secure RPC
1488 xdr_key_netstarg NEW: Secure RPC
1489 xdr_key_netstres NEW: Secure RPC
1490 xdr_keybuf NEW: Secure RPC
1491 xdr_keystatus NEW: Secure RPC
1492 xdr_netnamestr NEW: Secure RPC
1493 xdr_sizeof NEW: Secure RPC
1494 xdr_unixcred NEW: sunrpc ext
1495 xencrypt NEW: Secure RPC
1496 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1507 * inet_ntoa is thread-safe
1509 * updwtmp is moved from libutil to libc
1511 * rewrite of cbrt function
1513 * update of timezone data
1527 * add atoll function
1529 * fix complex problems in Berkeley DB code
1531 * fix math functions
1535 * fixed lots of header problems (especially Linux/GNU specific)
1537 * dynamic loader preserves all registers
1539 * Roland McGrath provided support for handling of auxiliary objects in
1540 the ELF dynamic loader.
1542 * support for parallel builds is improved
1546 * GNU extensions are no longer declared by default. To enable them you
1547 must define the macro `_GNU_SOURCE' in your program or compile with
1550 * The library has changed from using GNU ld symbol aliases to using weak
1551 symbols where available. The ELF object file format supports weak
1552 symbols; GNU ld also supports weak symbols in the a.out format. (There
1553 is also now support for other GNU ld extensions in ELF. Use the
1554 `--with-elf' option to configure to indicate you have ELF, and
1555 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1556 of many files which contained only symbol aliases, reducing the size of
1557 the source and the compiled library; many other files were renamed to
1558 less cryptic names previously occupied by the symbol alias files.
1559 There is a new header file <elf.h> for programs which operate on
1560 files in the ELF format.
1562 * Converted to Autoconf version 2, so `configure' has more options.
1563 Run `configure --help' to see the details.
1565 * The library can now be configured to build profiling, highly-optimized
1566 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1567 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1568 `configure' enable building these extra libraries. The shared library is
1569 built by default when using both ELF and GNU ld. When shared libraries
1570 are enabled, the new library `-ldl' is available for arbitrary run-time
1571 loading of shared objects; its interface is defined in <dlfcn.h>. The
1572 new header file <link.h> gives access to the internals of the run-time
1573 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1574 application of same name on other systems and it provides information
1575 about dynamically linked binaries.
1577 * The C library now provides the run-time support code for profiling
1578 executables compiled with `-pg'. Programs can control the profiling code
1579 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1580 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1581 the support for this file format was contributed by David Mosberger-Tang.
1583 * The math code has been replaced with a math library based on fdlibm from
1584 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1585 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1586 functions. The math functions now reside in a separate library, so
1587 programs using them will need to use `-lm' their linking commands.
1589 * John C. Bowman contributed optimized ix87 assembler inline functions.
1591 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1592 mechanism similar to that found in Solaris 2. This is now used for the
1593 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1594 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1595 file controls what services are used for each individual database. This
1596 works by loading shared libraries with names specified in `nsswitch.conf',
1597 so service modules can be changed or added at any time without even
1598 relinking any program. Currently there are the file, db, and NIS based
1599 NSS services available.
1601 * The new functions `strtoq' and `strtouq' parse integer values from
1602 strings, like `strtol' and `strtoul', but they return `long long int' and
1603 `unsigned long long int' values, respectively (64-bit quantities).
1605 * The new functions `strtof' and `strtold' parse floating-point values from
1606 strings, like `strtod', but they return `float' and `long double' values,
1607 respectively (on some machines `double' and `long double' are the same).
1609 * Ulrich Drepper has contributed new implementations of the floating-point
1610 printing and reading code used in the `printf' family of functions and
1611 `strtod', `strtof', and `strtold'. These new functions are perfectly
1612 accurate, and much faster than the old ones.
1614 * The implementation of the POSIX locale model was completely rewritten by
1615 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1616 to compile the POSIX locale definition.
1618 * The former dummy implementations of the strcoll and strxfrm function are
1619 now replaced by fully functional code contributed by Ulrich Drepper. The
1620 collation information comes from the POSIX locale definitions.
1622 * The new header <langinfo.h> defines an interface for accessing
1623 various locale-dependent data (using the locale chosen with `setlocale').
1625 * Ulrich Drepper has contributed a new suite of functions for operation on
1626 wide-character and multibyte-character strings, in <wchar.h>;
1627 and classification and case conversion of wide characters, in <wctype.h>.
1628 These new functions are conforming to the ISO C, Amendement 1 specification.
1630 * There is now a second implementation of the standard I/O library available.
1631 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1632 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1634 * You can now use positional parameter specifications in format strings
1635 for the `printf' and `scanf' families of functions. For example,
1636 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1637 ``Number 6, Mr Jones''. This is mainly useful when providing different
1638 format strings for different languages, whose grammars may dictate
1639 different orderings of the values being printed. To support this
1640 feature, the interface for `register_printf_handler' has changed; see
1641 the header file <printf.h> for details.
1643 * The `printf' and `scanf' families of functions now understand a new
1644 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1645 to group numbers as indicated by the locale; for `scanf' and friends, this
1646 says to accept as valid only a number with all the proper grouping
1647 separators in the right places. In the default "C" locale, numbers are
1648 not grouped; but locales for specific countries will define the usual
1649 conventions (i.e. separate thousands with `,' in the US locale).
1651 * The pgrp functions have been regularized, slightly incompatibly but much
1652 less confusingly. The core functions are now `getpgid' and `setpgid',
1653 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1654 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1655 provided for compatibility. There is no longer an incompatible `getpgrp'
1656 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1658 * The new header file <fts.h> and suite of functions simplify programs that
1659 operate on directory trees. This code comes from 4.4 BSD.
1661 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1662 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1663 NSS scheme used in glibc.
1665 * There is a new malloc debugging hook `__memalign_hook'.
1667 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1668 `unsigned int' in <sys/types.h>. These are for compatibility only and
1669 their use is discouraged.
1671 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1672 done differently, so that it works even without GNU ld.
1674 * New function `euidaccess' checks allowed access to a file like `access',
1675 but using the effective IDs instead of the real IDs.
1677 * The time zone data files have been updated for the latest and greatest
1678 local time conventions of the countries of the world.
1680 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1683 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1684 for formatting floating-point numbers. They are provided only for
1685 compatibility; new programs should use `sprintf' instead. There are
1686 also equivalent function for the `long double' floating-point type and
1687 all functions also exist in a reentrant form.
1689 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1690 functions for maintaining the login-record files (primarily of use to
1691 system programs such as `login'), and convenient functions for
1692 allocating and initializing a pseudo-terminal (pty) device.
1694 * Ulrich Drepper has contributed new support for System V style
1695 shared memory and IPC on systems that support it.
1697 * Ulrich Drepper has contributed several miscellaneous new functions found
1698 in System V: The `hsearch' family of functions provide an effective
1699 implementation of hash tables; `a64l' and `l64a' provide a very simple
1700 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1703 * Ulrich Drepper has contributed new reentrant counterparts for the
1704 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1706 * Ulrich Drepper has contributed new, highly-optimized versions of several
1707 string functions for the i486/Pentium family of processors.
1709 * Ulrich Drepper has updated the Linux-specific code, based largely
1710 on work done in Hongjiu Lu's version of GNU libc for Linux.
1711 The GNU library now supports Linux versions 2.0.10 and later,
1712 using the ELF object file format (i[3456]86-*-linux).
1714 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1716 * David Mosberger-Tang and Richard Henderson have ported the C library
1717 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1718 dynamic linking support for ELF/Alpha.
1720 * Richard Henderson contributed several Alpha optimized assembler function
1721 for arithmetic and string handling.
1723 * Ulrich Drepper has contributed a new set of message catalog functions to
1724 support multiple languages using the <libintl.h> interface, for use with
1725 his new package GNU gettext. Translation volunteers have contributed
1726 catalogs of the library's messages in Spanish, German, and Korean.
1728 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1729 program and the `catgets' function for reading the catalog files it
1730 creates. (The <libintl.h> interface is preferred; we include the
1731 <nl_types.h> interface using `catgets' only for source compatibility with
1732 programs already written to use it.)
1734 * New header file <values.h> gives SVID-compatible names for <limits.h>
1737 * Various new macros, declarations, and small header files for compatibility
1740 * New function `group_member' is a convenient way to check if a process has
1741 a given effective group ID.
1743 * When using GCC 2.7 and later, the socket functions are now declared in a
1744 special way so that passing an argument of type `struct sockaddr_in *',
1745 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1746 `struct sockaddr *' type, does not generate a type-clash warning.
1748 * New function `error' declared in header file <error.h> is a convenient
1749 function for printing error messages and optionally exiting; this is the
1750 canonical function used in GNU programs. The new functions `err', `warn',
1751 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1752 doing the same thing.
1754 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1755 POSIX.2 `glob' function to do ~ and {...} expansion.
1757 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1758 `clearenv' which is used in POSIX.9 is also available.
1760 * New function `getsid' returns session ID number on systems that support it.
1762 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1763 files <db.h> and <mpool.h> provide a rich set of functions for several
1764 types of simple databases stored in memory and in files, and <ndbm.h> is
1765 an old `ndbm'-compatible interface using the `db' functions. Link with
1766 `-ldb' to get these functions.
1768 * New macro `strdupa' copies a string like `strdup', but uses local stack
1769 space from `alloca' instead of dynamic heap space from `malloc'.
1771 * New function `strnlen' is like `strlen' but searches only a given maximum
1772 number of characters for the null terminator. `stpncpy', `strndup' and
1773 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1776 * New function `statfs' in header <sys/statfs.h>.
1778 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1779 provide convenient functions for operating on blocks of null-terminated
1782 * A new suite of functions in <utmp.h> handle all the details of reading
1783 and writing the utmp file.
1785 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1788 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1789 completely POSIX compliant and also implemented the extended functionality
1790 to handle alternate digit representation and alternate era date formats.
1792 * Ulrich Drepper provided an implementation of the `strptime' function
1793 defined in XPG4.2 which transforms a string into a `struct tm' value.
1795 * Paul Eggert provided the tzselect shell script as part of the timezone
1796 code. The shell script makes it easy to select the correct timezone
1799 * The implementation of the malloc family of functions is completely replaced
1800 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1801 The implementation uses the mmap function (if available) and it is
1802 optimized for the use in multi threaded programs.
1804 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1805 functions. This new functionality is usable by specifying a special
1806 salt string and it is compatible with implementation on *BSD systems.
1808 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1809 `getsubopt' to handle second level command line options, `bsd_signal'
1810 to access BSD style `signal' functionality, the obsolete `regexp' style
1813 * the `lchown' function is available on system which support this
1816 * The implementation of the shadow password handling function was contributed
1819 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1821 * POSIX.1g support was added. The <sys/select.h> header is available,
1822 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1823 implementation of `getaddrinfo'.
1827 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1829 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1830 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1832 * The new function `daemon' from 4.4 BSD is useful for server programs that
1833 want to put themselves in the background.
1835 * Joel Sherrill has contributed support for several standalone boards that
1836 run without an operating system.
1838 * `printf', `scanf' and friends now accept a `q' type modifier for long
1839 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1841 * All of the code taken from BSD (notably most of the math and networking
1842 routines) has been updated from the BSD 4.4-Lite release.
1844 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1846 * The new functions `getdomainname' and `setdomainname' fetch or change the
1847 YP/NIS domain name. These are system calls which exist on systems which
1850 * The time zone data files have been updated for the latest international
1853 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1854 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1858 * The C library now includes support for Sun RPC, from Sun's free
1859 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1860 are included. (There is still no support for YP.)
1862 * Tom Quinn has contributed a port of the C library to SGI machines running
1863 Irix 4 (mips-sgi-irix4).
1865 * The new `lockf' function is a simplified interface to the locking
1866 facilities of `fcntl', included for compatibility.
1868 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1870 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1872 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1875 * The error message printed by `assert' for a failed assertion now includes
1876 the name of the program (if using GNU ld) and the name of the calling
1877 function (with versions of GCC that support this).
1879 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1881 * The library now includes the <sys/mman.h> header file and memory
1882 management functions `mmap', `munmap', `mprotect', `msync', and
1883 `madvise', on systems that support those facilities.
1885 * The interface for `mcheck' has changed slightly: the function called to
1886 abort the program when an allocation inconsistency is detected now takes
1887 an argument that indicates the type of failure. The new function
1888 `mprobe' lets you request a consistency check for a particular block at
1889 any time (checks are normally done only when you call `free' or `realloc'
1892 * It is now possible to easily cross-compile the C library, building on one
1893 system a library to run on another machine and/or operating system. All
1894 you need to do is set the variable `HOST_CC' in `configparms' to the
1895 native compiler for programs to run on the machine you are building on (a
1896 few generator programs are used on Unix systems); set `CC' to the
1899 * The new function `fexecve' (only implemented on the GNU system) executes
1900 a program file given a file descriptor already open on the file.
1904 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1905 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1907 * You can set the variable `libprefix' in `configparms' to specify a prefix
1908 to be prepended to installed library files; this makes it easy to install
1909 the GNU C library to be linked as `-lgnuc' or whatever.
1911 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1912 copies a limited number of characters from a string, and returns the
1913 address of the last character written.
1915 * You no longer need to check for whether the installed `stddef.h' is
1916 compatible with the GNU C library. configure now checks for you.
1918 * You can now define a per-stream `fileno' function to convert the
1919 stream's cookie into an integral file descriptor.
1921 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1922 allocates zero bytes of storage, and returns a unique pointer which
1923 you can pass to `realloc' or `free'. The behavior is undefined if
1924 you dereference this pointer.
1926 * The C library now runs on Sony NEWS m68k machines running either
1927 NewsOS 3 or NewsOS 4.
1929 * The new `syscall' function is a system-dependent primitive function
1930 for invoking system calls. It has the canonical behavior on Unix
1931 systems, including unreliable return values for some calls (such as
1932 `pipe', `fork' and `getppid').
1934 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1935 to `EAGAIN', which is the preferred name. On systems whose kernels
1936 use two distinct codes, the C library now translates EWOULDBLOCK to
1937 EAGAIN in every system call function.
1941 * The GNU C Library Reference Manual is now distributed with the library.
1942 `make dvi' will produce a DVI file of the printed manual.
1943 `make info' will produce Info files that you can read on line using C-h i
1944 in Emacs or the `info' program.
1945 Please send comments on the manual to bug-glibc-manual@gnu.org.
1947 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1949 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1951 * Jason Merrill has contributed a port to the Sequent Symmetry running
1952 Dynix version 3 (i386-sequent-dynix).
1954 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1955 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1957 * New function `memory_warnings' lets you arrange to get warnings when
1958 malloc is running out of memory to allocate, like Emacs gives you.
1960 * The C library now contains the relocating allocator used in Emacs 19 for
1961 its editing buffers. This allocator (ralloc) minimizes allocation
1962 overhead and fragmentation by moving allocated regions around whenever it
1963 needs to. You always refer to a ralloc'd region with a "handle" (a
1964 pointer to a pointer--an object of type `void **').
1966 * There is a new `printf' format: `%m' gives you the string corresponding
1967 to the error code in `errno'.
1969 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1970 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1971 pass, the `a' modifier says to fill in a `char **' you pass with a
1974 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1975 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1976 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1978 * `mkstemp' is a traditional Unix function to atomically create and open a
1979 uniquely-named temporary file.
1983 * The standard location for the file that says what the local timezone is
1984 has changed again. It is now `/usr/local/etc/localtime' (or more
1985 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1987 * The distribution no longer contains any files with names longer than 14
1990 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1991 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1993 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1997 * The configuration process has changed quite a bit. The `configure'
1998 script is now used just like the configuration scripts for other GNU
1999 packages. The `sysdeps' directory hierarchy is much rearranged.
2000 The file `INSTALL' explains the new scheme in detail.
2002 * The header files no longer need to be processed into ANSI C and
2003 traditional C versions. There is just one set of files to install, and
2004 it will work with ANSI or old C compilers (including `gcc -traditional').
2006 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2007 MIPS DECStation running Ultrix 4.
2009 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2010 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2011 made itself into a shared library.
2013 * Yet further improved support for the i386, running 4.3 BSD-like systems
2014 (such as Mach 3 with the Unix single-server), or System V.
2016 * New function `strncasecmp' to do case-insensitive string comparison
2017 with limited length.
2019 * New function `strsep' is a reentrant alternative to `strtok'.
2021 * New functions `scandir' and `alphasort' for searching directories.
2023 * New function `setenv' is a better interface to `putenv'.
2025 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2026 function for traversing a directory tree.
2028 * The GNU obstack package is now also part of the C library.
2029 The new function `open_obstack_stream' creates a stdio stream that
2030 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2031 formatted output directly to an obstack.
2033 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2034 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2036 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2038 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2039 things to your strings.
2041 * There are some new test programs: test-fseek, testmb, and testrand.
2043 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2044 These ports are not finished, but are a good starting place for really
2045 supporting those systems.
2047 * `/etc/localtime' is now the standard location for the file that says what
2048 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2049 This follows the general principle that `/etc' is the place for all local
2050 configuration files.
2052 * The C library header files now use `extern "C"' when used by the C++
2053 compiler, so the C library should now work with C++ code.
2055 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2056 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2059 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2060 function which uses the `merge sort' algorithm, and is said to be
2061 significantly faster than the old GNU `qsort' function. Merge sort is
2062 now the standard `qsort' function. The new algorithm can require a lot
2063 of temporary storage; so, the old sorting function is called when the
2064 required storage is not available.
2066 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2067 provides the Unix `crypt' function, plus some other entry points.
2069 * The code and header files taken from 4.4 BSD have been updated with the
2070 latest files released from Berkeley.
2072 ----------------------------------------------------------------------
2073 Copyright information:
2075 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2077 Permission is granted to anyone to make or distribute verbatim copies
2078 of this document as received, in any medium, provided that the
2079 copyright notice and this permission notice are preserved,
2080 thus giving the recipient permission to redistribute in turn.
2082 Permission is granted to distribute modified versions
2083 of this document, or of portions of it,
2084 under the above conditions, provided also that they
2085 carry prominent notices stating who last changed them.
2088 version-control: never
projects / platform / upstream / glibc.git / blob