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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.
7 \f
8 Version 2.16
10 * The following bugs are resolved with this release:
12 174, 350, 411, 2541, 2547, 2548, 2551, 2552, 2553, 2554, 2562, 2563, 2565,
13 2566, 2576, 3335, 3976, 3992, 4026, 4108, 4596, 4822, 5077, 5461, 5805,
14 5993, 6471, 6730, 6884, 6907, 6911, 9739, 9902, 10110, 10135, 10140,
15 10210, 10545, 10716, 11174, 11322, 11365, 11451, 11494, 12047, 13058,
16 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532, 13533, 13547,
17 13551, 13552, 13553, 13555, 13559, 13566, 13583, 13618, 13637, 13656,
18 13658, 13673, 13695, 13704, 13706, 13726, 13738, 13786, 13792, 13806,
19 13824, 13840, 13841, 13844, 13846, 13851, 13852, 13854, 13871, 13883,
20 13892
22 * ISO C11 support:
24 + define static_assert
26 + do not declare gets
28 + declare at_quick_exit and quick_exit also for ISO C11
30 + aligned_alloc. NB: The code is deliberately allows the size parameter
31 to not be a multiple of the alignment. This is a moronic requirement
32 in the standard but it is only a requirement on the caller, not the
33 implementation.
35 + timespec_get added
37 + uchar.h support added
39 + CMPLX, CMPLXF, CMPLXL added
41 Implemented by Ulrich Drepper.
43 * Support for the IA-64 is removed and could live in ports.
45 * Remove support for anything but ELF binary format
47 * Checking versions of poll, ppoll added.
48 Implemented by Ulrich Drepper.
50 * More generic and 64-bit performance optimizations to math functions.
51 Implemented by Ulrich Drepper.
52 \f
53 Version 2.15
55 * The following bugs are resolved with this release:
57 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
58 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
59 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
60 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
61 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
62 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
63 13484, 13506, 13515, 13523, 13524, 13538, 13540
65 * New program pldd to list loaded object of a process
66 Implemented by Ulrich Drepper.
68 * Add nss_db support back to glibc. No more dependency on Berkeley db
69 and support for initgroups lookups.
70 Implemented by Ulrich Drepper.
72 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
73 Contributed by HJ Lu.
75 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
76 Contributed by HJ Lu.
78 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
79 on x86-32 and x86-64.
80 Contributed by Liubov Dmitrieva.
82 * Optimized strchr and strrchr for SSE on x86-32.
83 Contributed by Liubov Dmitrieva.
85 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
86 for x86-64 and x86-32.
87 Contributed by Liubov Dmitrieva.
89 * New interfaces: scandirat, scandirat64
90 Implemented by Ulrich Drepper.
92 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
93 Implemented by Ulrich Drepper.
95 * nscd now also caches the netgroup database.
96 Implemented by Ulrich Drepper.
98 * Integrate libm with gcc's -ffinite-math-only option.
99 Implemented by Ulrich Drepper.
101 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
102 to math functions. Implemented by Ulrich Drepper.
104 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
105 Implemented by Ulrich Drepper.
107 * New Linux interfaces: process_vm_readv, process_vm_writev
109 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
110 Implemented by Ulrich Drepper.
112 * Optimized nearbyint and strcasecmp for PPC.
113 Implemented by Adhemerval Zanella.
115 * New locales: bho_IN, unm_US, es_CU, ta_LK
116 \f
117 Version 2.14
119 * The following bugs are resolved with this release:
121 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
122 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
123 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
124 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
125 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
126 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
127 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
128 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
129 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
130 12795, 12811, 12813, 12814, 12841
132 * The RPC implementation in libc is obsoleted. Old programs keep working
133 but new programs cannot be linked with the routines in libc anymore.
134 Programs in need of RPC functionality must be linked against TI-RPC.
135 The TI-RPC implementation is IPv6 enabled and there are other benefits.
137 Visible changes of this change include (obviously) the inability to link
138 programs using RPC functions without referencing the TI-RPC library and the
139 removal of the RPC headers from the glibc headers.
140 Implemented by Ulrich Drepper.
142 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
143 syncfs, setns, sendmmsg
145 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
146 yue_HK, lij_IT, mhr_RU
148 * New encodings: CP770, CP771, CP772, CP773, CP774
150 * New program sotruss to trace calls through PLTs
151 Implemented by Ulrich Drepper.
153 * The malloc hook implementation is marked deprecated and will be removed
154 from the default implementation in the next version. The design never
155 worked ever since the introduction of threads. Even programs which do
156 not create threads themselves can use multiple threads created internally.
157 \f
158 Version 2.13
160 * The following bugs are resolved with this release:
162 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
163 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
164 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
165 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
166 12378, 12394, 12397
168 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
170 * POWER7 optimizations: memset, memcmp, strncmp
172 * New optimized string functions for x86-64: strnlen (SSE2),
173 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
174 Implemented by Ulrich Drepper.
175 \f
176 Version 2.12
178 * The following bugs are resolved with this release:
180 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
181 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
182 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
183 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
184 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
185 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
186 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
187 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
189 * New interfaces: pthread_getname_np, pthread_setname_np
191 * New Linux interface: recvmmsg
193 * STT_GNU_IFUNC implemented for Sparc by David Miller.
195 * The dynamic linker now recognizes supported ABI versions from the
196 EI_ABIVERSION field in the ELF header.
197 Implemented by Ulrich Drepper.
199 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
200 will not be used to fill in password fields in the passwd.byname replies.
201 Instead it is used to synthesize the shadow.byname table, should it be
202 missing. This is a useful mode in some installations involving Solaris.
203 Implemented by Ulrich Drepper.
205 * New locales: kok_IN, sq_MK, cv_RU
206 \f
207 Version 2.11
209 * The following bugs are resolved with this release:
211 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
212 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
213 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
214 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
215 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
216 10789, 10817, 10823, 10840, 10847
218 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
219 mkostemps64
220 Implemented by Ulrich Drepper.
222 * Checking version of longjmp added that fails if an uninitialized stack
223 frame would be created. Implemented by Ulrich Drepper.
225 * STT_GNU_IFUNC is now supported in static executables.
226 Implemented by H.J. Lu.
228 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
230 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
231 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
232 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
233 Contributed by H.J. Lu.
235 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
236 Implemented by Ulrich Drepper.
238 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
239 strstr, strcasestr.
240 Contributed by H.J. Lu.
242 * Support for fma instruction in AVX on x86-64.
243 Implemented by H.J. Lu and Ulrich Drepper.
245 * AVX support in x86-64 auditing support in ld.so.
246 Implemented by H.J. Lu.
248 * STB_GNU_UNIQUE support added.
249 Implemented by Ulrich Drepper.
251 * Implement second fallback mode for optimized DNS lookup for even more
252 broken environments. If two requests from the same port are not
253 handled correctly close the socket and open a new one before sending
254 the second request. The 'single-request-reopen' option in /etc/resolv.conf
255 can be used to select this mode right away, instead of rediscovering the
256 necessity is every process again.
257 Implemented by Ulrich Drepper.
259 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
260 Implemented by Adam Tkac.
262 * Optimized iconv conversions for S390x.
263 Implemented by Andreas Krebbel.
265 * Using condvars with PI mutexes is now more efficient due to kernel
266 support for requeueing to PI futexes. NPTL support added for x86-64.
267 Implemented by Ulrich Drepper.
269 * New locales: ps_AF, my_MM
270 \f
271 Version 2.10
273 * The following bugs are resolved with this release:
275 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
276 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
277 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
278 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
279 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
281 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
282 Implemented by Ulrich Drepper.
284 * New Linux interfaces: accept4, fallocate, fallocate64.
285 Implemented by Ulrich Drepper.
287 * Correct declarations of string function when used in C++ code. This
288 could lead to compile errors for invalid C++ code.
290 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
291 now in POSIX.
293 * New POSIX 2008 interface: psiginfo
294 Implemented by Ulrich Drepper.
296 * New ISO C++1x interfaces: quick_exit, at_quick_exit
297 Implemented by Ulrich Drepper.
299 * Support for selecting between multiple function definitions at runtime
300 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
302 * The libcrypt library can now use the hash function implementations in
303 NSS. Implemented by Ulrich Drepper.
305 * The malloc implementation can be compiled to be less memory efficient
306 but higher performing in multi-threaded programs.
307 Implemented by Ulrich Drepper.
309 * New locales: nan_TW@latin, ks_IN
311 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
312 Implemented by Ulrich Drepper.
314 * Extended printf hook support. It is possible to use user-defined types
315 and extend existing format specifiers.
316 Implemented by Ulrich Drepper.
318 * Handling for group shadow files has been added.
319 Implemented by Ulrich Drepper.
321 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
322 servers (the case, e.g., for some people using the built-in DNS
323 server in ADSL modems/routers). There is a once-per-process timeout
324 in case of a broken server. To avoid it, users can run nscd or put
325 'options single-request' in /etc/resolv.conf.
326 Implemented by Ulrich Drepper.
327 \f
328 Version 2.9
330 * The following bugs are resolved with this release:
332 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
333 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
334 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
335 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
336 6968, 6974, 6980, 6995, 7008, 7009, 7029
338 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
339 up at the same time. Implemented by Ulrich Drepper.
341 * TLS descriptors for LD and GD on x86 and x86-64.
342 Implemented by Alexandre Oliva.
344 * getaddrinfo now handles DCCP and UDPlite.
345 Implemented by Ulrich Drepper.
347 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
348 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
349 Implemented by Ulrich Drepper.
351 * New implementation of memmem, strstr, and strcasestr which is O(n).
352 Implemented by Eric Blake.
354 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
356 * Implement "e" option for popen to open file descriptor with the
357 close-on-exec flag set. Implemented by Ulrich Drepper.
359 * Implement "b" mode for fmemopen. In this mode writes writes don't
360 implicitly add a NUL byte and seeks from the end of the buffer really
361 use the buffer end, not the string length as the basis.
362 Implemented by Ulrich Drepper.
364 * Many functions, exported and internal, now atomically set the close-on-exec
365 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
367 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
368 Sinhala)
369 Implemented by Pravin Satpute.
371 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
372 \f
373 Version 2.8
375 * The following bugs are resolved with this release:
377 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
378 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
379 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
380 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
381 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
382 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
383 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
385 * New locales: bo_CN, bo_IN, shs_CA.
387 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
389 * Sorting rules for some Indian languages (Devanagari and Gujarati).
390 Implemented by Pravin Satpute.
392 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
394 * nscd caches now all timeouts for DNS entries
395 Implemented by Ulrich Drepper.
397 * nscd is more efficient and wakes up less often.
398 Implemented by Ulrich Drepper.
400 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
401 vdprintf, and obstack_vprintf.
402 Implemented by Jakub Jelinek.
404 * Faster memset for x86-64.
405 Implemented by Harsha Jagasia and H.J. Lu.
407 * Faster memcpy on x86.
408 Implemented by Ulrich Drepper.
410 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
411 Implemented by Ulrich Drepper.
413 * Faster sqrt and sqrtf implemention for some PPC variants.
414 Implemented by Stephen Munroe.
415 \f
416 Version 2.7
418 * The following bugs are resolved with this release:
420 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
421 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
422 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
423 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
424 5071, 5103, 5104, 5112, 5113, 5184, 5186
426 * More checking functions: fread, fread_unlocked, open*, mq_open.
427 Implemented by Jakub Jelinek and Ulrich Drepper.
429 * Extend fortification to C++. Implemented by Jakub Jelinek.
431 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
432 by not recognizing 'a' as a modifier when those specs are requested.
433 Implemented by Jakub Jelinek.
435 * PPC optimizations to math and string functions.
436 Implemented by Steven Munroe.
438 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
439 options to be passed. Implemented by Ulrich Drepper.
441 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
443 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
444 Implemented by Ulrich Drepper.
446 * Handle private futexes in the NPTL implementation.
447 Implemented by Jakub Jelinek and Ulrich Drepper.
449 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
450 Implemented by Roland McGrath and Ulrich Drepper.
452 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
454 * SHA-256 and SHA-512 based password encryption.
455 Implemented by Ulrich Drepper.
457 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
458 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
459 yo_NG.
461 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
462 Implemented by Ulrich Drepper.
463 \f
464 Version 2.6
466 * The following bugs are resolved with this release:
468 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
469 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
470 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
471 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
472 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
473 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
474 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
475 4702, 4858
477 * New Linux interfaces: epoll_pwait, sched_getcpu.
479 * New generic interfaces: strerror_l.
481 * nscd can now cache the services database. Implemented by Ulrich Drepper.
482 \f
483 Version 2.5
485 * The following bugs are resolved with this release:
487 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
488 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
489 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
490 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
491 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
492 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
493 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
494 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
495 3225, 3251, 3252, 3253, 3273
497 * For Linux, the sorting of addresses returned by getaddrinfo now also
498 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
499 Implemented by Ulrich Drepper.
501 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
502 Implemented by Ulrich Drepper.
504 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
506 * New iconv module for MIK. Contributed by Alexander Shopov.
508 * For sites with broken group and/or passwd database, the auto-propagate
509 option of nscd can prevent creating ID lookup entries from the results
510 of a name lookup and vice versa. This usually is no problem but some
511 site might have problems with the default behavior.
512 Implemented by Ulrich Drepper.
514 * Iterating over entire database in NIS can be slow. With the
515 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
516 to trade time for memory. The entire database will be read at once.
517 Implemented by Ulrich Drepper.
519 * The interfaces introduced in RFC 3542 have been implemented by
520 Ulrich Drepper.
522 * Support for the new ELF hash table format was added by Ulrich Drepper.
524 * Support for priority inheritance mutexes added by Jakub Jelinek and
525 Ulrich Drepper.
527 * Support for priority protected mutexes added by Jakub Jelinek.
529 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
530 or_IN, csb_PL, fy_NL, sr_ME.
531 \f
532 Version 2.4
534 * More overflow detection functions.
536 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
537 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
539 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
540 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
541 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
542 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
543 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
544 by Masahide Washizawa.
546 * It is now possible to install audit libraries for the dynamic linker using
547 LD_AUDIT. Implemented by Ulrich Drepper.
549 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
550 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
551 For a libc and libpthread that works well on Linux 2.4 kernels, we
552 recommend using the stable 2.3 branch.
554 * The new function open_wmemstream acts like open_memstream,
555 but uses a wchar_t wide character buffer.
557 * The new function ppoll is an improved version of poll, similar to pselect.
559 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
560 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
561 renameat, unlinkat, linkat, symlinkat, readlinkat.
563 * New Linux kernel system calls: unshare,
564 inotify_init, inotify_add_watch, inotify_rm_watch.
566 * The euidaccess function is now also known by the alias eaccess,
567 for compatibility with some other systems.
569 * Timezone data updated to 2006b version.
570 \f
571 Version 2.3.6
573 * The following bugs are resolved with this release:
575 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
576 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
577 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
578 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
579 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
580 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
582 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
584 * As of this release, GCC 4 can be used to compile the C Library.
586 * Timezone data updated to 2005m version.
587 \f
588 Version 2.3.5
590 * The following bugs are resolved with this release:
592 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
593 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
594 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
595 777, 787, 821, 822, 823, 825
597 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
598 \f
599 Version 2.3.4
601 * Support for RFC 3678. Real implementations exist only for Linux so far.
602 Implemented by Ulrich Drepper.
604 * nscd can now cache entries persistently. Expiring entries are reloaded.
605 For speedups the cache can be shared in memory with client processes.
606 Implemented by Ulrich Drepper.
608 * nscd can now perform SELinux checks.
609 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
611 * getaddrinfo queries are now cached. Canonical name lookup is performed
612 efficiently.
613 Implemented by Ulrich Drepper.
615 * The nothrow function attribute is used when headers are used by gcc when
616 compiling C code. This can avoid significant amounts of exception
617 handling data.
619 * The malloc functions perform more error checking and are stricter when
620 it comes to reacting on errors. The default action is to terminate
621 the process after showing an error message. Implemented by Ulrich Drepper.
623 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
624 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
626 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
627 namespaces using the new function dlmopen(). This feature is of course,
628 like most other dynamic loading functionality, not available in statically
629 linked applications. Implemented by Ulrich Drepper.
631 * Low-overhead boundary checking variants of string and some stdio functions
632 were added. These are to be used in conjunction with a gcc patch by
633 Jakub Jelinek which adds calls to these functions if possible.
634 Implemented by Jakub Jelinek and Ulrich Drepper.
636 * Old code for several operating systems and machine architectures that
637 have not been in working condition in a long time have been removed from
638 the main source tree maintained by the GNU C Library's maintainers.
639 These files are now reside in the separate `ports' source module
640 that is usable as an add-on when building the library.
641 \f
642 Version 2.3.3
644 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
645 interrogate the dynamic linker, compatible with the Solaris interface.
647 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
648 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
650 * getifaddrs now uses the netlink interface on Linux to get its information.
651 Implemented by Thorsten Kukuk.
653 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
654 Implemented by Ulrich Drepper.
656 * support for non-executable stacks on x86 has been added. Changes mostly
657 by Roland McGrath.
659 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
660 and Ulrich Drepper.
662 * getaddrinfo now performs destination address selection according to
663 RFC 3484.
664 \f
665 Version 2.3.2
667 * Thread-safe interfaces for many functions that access locale data
668 were added in version 2.3, but these features were omitted from NEWS.
669 Many functions have variants with an `_l' suffix that take a `locale_t'
670 object as a parameter rather than consulting the current locale.
671 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
672 create and maintain `locale_t' objects. Additionally, the new function
673 `uselocale' sets "the current locale" (as used by functions not so
674 parameterized) set for an individual thread. These features were added
675 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
677 * The functions getresuid, getresgid, setresuid, and setresgid, which
678 have long been available on Linux, are now declared in <unistd.h>
679 and are now also available on the Hurd.
681 * ELF thread-local storage support (TLS) now works on x86-64.
683 * The new dynamic string token $LIB is expanded in shared library names.
684 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
686 * Aldy Hernandez contributed complete software floating point support for
687 PowerPC machines with no FPU.
689 * fexecve is implemented on Linux.
691 * The `btowc' function should work at least twice as fast due to
692 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
694 * With approriate thread add-ons cancelable functions are now implemented
695 in libc.so as well. No need to call the function in libpthread. This
696 change allowed to finally disable the incorrect and expensive handling
697 of weak definition in ld.so.
699 * Yet more PLT entries in libc.so have been removed. We finally arrived
700 at the bare minimum. Startup times improved appropriately.
702 * Support for the new Linux/x86 system call interface was added. The
703 AT_SYSINFO auxiliary vector entry is recognized and handled.
704 \f
705 Version 2.3
707 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
708 charsets.
710 * iconv (the program and the interface) now accepts empty names (excluding
711 options like //TRANSLIT) to mean "use charset of current locale".
713 * localedef can now transliterate characters in strings which are not in
714 the provided charmap. The information from the input locale is used.
716 * Prelinking support was added for ELF targets. This requires additional
717 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
719 * Read-only stdio streams now use mmap to speed up operation by eliminating
720 copying and buffer underflows. To use add 'm' to the mode string of
721 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
723 * The malloc functions were completely rewritten by Wolfram Gloger based
724 on Doug Lea's malloc-2.7.0.c.
726 * Isamu Hasegawa contributed a completely new and POSIX-conformant
727 implementation of regex.
729 * Bruno Haible upgraded the iconv and locale implementation to support
730 Unicode 3.2.
732 * Contents of the LC_* and LANG environment variables in the CEN style are
733 not recognized anymore. It never was used. Change by Ulrich Drepper.
735 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
736 thread-local storage (TLS) ABI on some platforms.
737 Changes by Ulrich Drepper. SH support by Kaz Kojima.
739 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
740 EUC-JISX0213, and TSCII.
742 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
743 BSD-compatible interface for getting all network interface addresses.
744 Implementation for IPv4 by Roland McGrath.
746 * Loading of locale data is faster due to the introduction of a locale
747 archive. Implemented by Roland McGrath and Ulrich Drepper.
749 * Startup times are significantly reduced by not using exported functions
750 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
751 and Ulrich Drepper.
753 * Steven Munroe contributed a port to PowerPC64/Linux.
754 \f
755 Version 2.2.6
757 * The Hurd now uses the GNU libio implementation of stdio rather than the
758 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
760 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
761 with the same behavior as the Linux system call of the same name.
762 \f
763 Version 2.2.5
765 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
766 128-bit long double format.
768 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
769 IBM1161, and IBM1162 charsets.
771 * Andreas Jaeger contributed a port to x86-64/Linux.
773 * Peter Bruin contributed a port to PowerPC/Hurd.
775 * libc functions using I/O streams now can handle wide-oriented streams
776 as well.
778 * optimizations in the dynamic linker. Binaries created by recent binutils
779 versions start up quicker due to reduced time spent on relocations.
781 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
782 \f
783 Version 2.2.4
785 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
786 asinh, atanh, j0 for the 128-bit long double format.
788 * Bruno Haible updated all the code handling Unicode in some form to
789 support Unicode 3.1.
791 * Speed of regex for single-byte locales is back to previous levels.
792 Patch by Isamu Hasegawa.
794 * Alpha, SPARC, and IA-64 now also using floating stacks.
796 * Startup time of internationalized applications greatly improved through
797 iconv cache. Use iconvconfig to generate the cache file.
798 Contributed by Ulrich Drepper.
800 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
801 severe performance problems. Patch by David Mosberger.
803 * The Hurd port got a lot more functionality like AIO, various stdio
804 extensions, etc. Mainly done by Roland McGrath.
806 * mtrace can now lookup symbols in shared libraries.
807 \f
808 Version 2.2.3
810 * Intel's IA-64 math library is largely integrated. It provides fast and
811 accurate implementatations for most basic and standard math functions
812 in float, double, and long double format.
814 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
815 and asin for the 96-bit long double format and asin, log, tan for the
816 128-bit long double format.
818 * The beginning of a last-bit accurate math library by IBM Haifa were added.
819 The basic double functions exist today. Contributed by Abraham Ziv
820 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
821 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
823 * An asynchronous name lookup library was added. The interface is designed
824 after POSIX AIO. The proposal was circulated beforehand to get comments.
825 No negative ones came in. Implemented by Ulrich Drepper.
827 * Port to S390/64bit contributed by Martin Schwidefsky
828 <schwidefsky@de.ibm.com>.
830 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
831 of functions for Linux/IA-64.
833 * The RPC code is now thread safe. Threads can now use the same service
834 of different services at the same time. Patch by Eric Norum
835 <eric.norum@usask.ca> with some help by Ulrich Drepper.
837 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
838 family of functions for Linux/S390.
840 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
841 of functions for Linux/x86.
843 * Port to Linux/CRIS contributed by Axis Communications.
844 \f
845 Version 2.2.2
847 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
848 we can now check for namespace violations and missing declarations. The
849 result is that almost all headers are now Unix-compliant (as defined in
850 the upcoming XPG6). The negative side is that some programs might need
851 corrections, too, if they depend on the incorrect form of the headers in
852 previous versions which defined too many symbols and included too many
853 other headers.
855 * regex now handles multibyte character sets correctly.
856 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
858 * iconv (the program) does now conform to the upcoming XPG6 and handles
859 charmaps. Instead of the charset names the path of charmaps can be
860 provided and the conversion happens based on this data.
861 Contributed by Ulrich Drepper.
863 * The locale program now provides detailed information about the installed
864 locales. While
866 locale -a
868 only lists the names of the supported locales
870 locale -a --verbose
872 provides details such as country, language, and codeset name.
873 Contributed by Ulrich Drepper.
874 \f
875 Version 2.2.1
877 * The gencat program now parses the input file according to the charset
878 selected by the LC_CTYPE category. This is important for stateful
879 character sets. To make generating catalogs easier there is a way
880 to overwrite the charset selected by the locale: before the first
881 message or $ quote line the catalog can contain a line like
883 $ codeset=ISO-8859-2
885 to select the charset (ISO-8859-2 in this case).
887 Implemented by Shinya Hanataka and Ulrich Drepper.
889 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
890 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
891 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
893 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
894 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
896 * The LANGUAGE environment variable is now ignored unless the locale is
897 changed from the default "C" locale.
899 * The usual bug fixes.
900 \f
901 Version 2.2
903 * Greg McGary added runtime support for bounds checking using gcc's
904 new -fbounded-pointers option. ix86 target is complete. PowerPC
905 is in progress.
907 * Thorsten Kukuk added secure mode support to nscd.
909 * The Berkeley db libraries have been removed.
911 Related, the nss_db module is now in a separate package since it
912 obviously requires a database library being available.
914 * Wide character I/O streams implemented by Ulrich Drepper.
916 * Functions from the extended socket API added by Ulrich Drepper.
918 * Functions feenableexcept and fedisableexcept to control the
919 behaviour of individual exceptions have been added by Andreas Jaeger.
921 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
923 * The resolver code has been updated from bind 8.2.3-T5B which supports
924 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
925 and Mark Kettenis.
927 This change could in some situations effect backward compatibility. Since
928 now `_res' is a thread-local instead of a global variable, modifying it
929 in one thread does not have any effect in other threads.
931 The resolver library was also extended to allow IPv6 as the transport
932 protocol for the requests. This work was done by Stig Venaas.
934 * Compatibility code for K&R C compilers has been removed from the
935 header files. A ISO C compiler is needed to use the library
936 (conforming to either C89 or C99 standard).
938 * Complete rewrite of the localedef program to support multibyte character
939 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
940 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
941 Implemented by Ulrich Drepper.
943 Bruno Haible significantly improved the generation and use of the data
944 structures for the wide character tables.
946 * Plural handling in gettext implemented by Ulrich Drepper.
948 * The utmp daemon has been removed.
950 * The port to MIPS-Linux has been finished by Andreas Jaeger.
952 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
953 and Yutaka Niibe.
955 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
957 * POSIX barriers implemented by Kaz Kylheku.
959 * POSIX spawn function family implemented by Ulrich Drepper.
961 * POSIX spinlocks are now available.
963 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
965 * the configure option --enable-kernel=X.Y.Z allows to strip out
966 compatibility for kernel versions before X.Y.Z. This is currently only
967 implemented for Linux.
969 * the sockaddr_in6 structure changed. The IPv6 working group added a new
970 field sin6_scope_id. This means that all programs using IPv6 should be
971 recompiled. Don't expect binary compatibility with previous glibc
972 versions.
974 * various conversion modules for IBM character sets contributed by
975 Masahide Washizawa.
977 * IA-64 port by Jes Sorensen and HJ Lu.
979 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
980 Compiling the GNU C Library for Linux/ia64
981 ******************************************
983 Please refer to the file INSTALL in the same directory as you found
984 this file for general information about configuring and compiling
985 glibc.
987 For general inquiries about glibc under Linux/ia64 please use the
988 following mailing list linux-ia64@linuxia64.org or one of the relevant
989 glibc mailing lists.
991 Recommended Tools for Compilation
992 =================================
994 In order for glibc-2.2 to build correctly on the ia64 you need at
995 least the following versions of the GNU tools (the :
997 * The Cygnus toolchain snapshot for the ia64 as of August 4
998 including the provided set of patches. It is however recommend
999 you use the October 24 toolchain snapshot or a more recent version.
1001 OR alternatively you can try the following (the Cygnus toolchain is
1002 the recommended solution):
1004 * GCC and binutils, GAS and GNU LD out of CVS from
1005 sources.redhat.com as of August 28, 2000 or later. The CVS tree
1006 may require special patches to work properly on the ia64.
1008 Configuring and compiling GNU Libc for Linux/ia64
1009 =================================================
1011 The library requires Linux kernel version 2.4.0-test4-000728 or
1012 later to funtion properly. Besides that it support for debug libraries
1013 is currently untested. Hence the following options
1014 are required for configuring the library:
1016 --disable-debug --enable-kernel=2.4.0
1018 It is also important that you make sure the library picks up the
1019 appropriate kernel header files, if you do not have recent enough
1020 kernel headers in /usr/src/linux/include, you should use the
1021 --with-headers=<path> option to specify the location.
1023 As an example I personally use the following options to configure
1024 the library:
1026 --disable-debug
1027 --disable-cvs
1028 --enable-kernel=2.4.0
1029 --host=ia64-linux
1030 --enable-add-ons=yes
1031 --prefix=/usr
1032 --with-headers=/home/jes/linux/include
1035 Good luck
1037 Jes Sorensen <jes@linuxcare.com>,
1038 November 14th, 2000
1039 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1040 \f
1041 Version 2.1.3
1043 * bug fixes
1045 \f
1046 Version 2.1.2
1048 * bug fixes
1050 \f
1051 Version 2.1.1
1053 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1055 * New xdr functions are added; some rpc functions are now 64bit clean.
1057 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1059 * Fixed known incompatibilities with glibc 2.0.
1061 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1063 * Optimized a number of functions (especially the ELF dynamic loader).
1065 * Update timezone data files.
1067 * lots of charmaps corrections
1069 * some new locale definitions and charmaps
1071 \f
1072 Version 2.1
1074 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1075 conform to POSIX member type requirements. Symbol versions have been
1076 adjusted as needed within the library, and for direct use by applications,
1077 but there is potential for problems if third-party libraries use
1078 struct timeval as part of their interface. This does not present
1079 a problem for X and other "essential" system libraries.
1081 * An additional locale model to support C++ Standard Library locale
1082 model and probably more was implemented by Ulrich Drepper.
1084 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1085 symbol level.
1087 * Miles Bader provided the `argp' function family to support hierachical
1088 command line argument parsing, layered on top of getopt.
1090 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1092 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1093 numbers.
1095 * scanf recognizes the %a and %A format for scanning floating point numbers.
1097 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1098 information and interfaces for the available integer types.
1100 * about 130 new math functions were added to implement the ISO C9x math
1101 library.
1103 * the new header <complex.h> contains definitions of the complex math
1104 functions from ISO C 9X.
1106 * the new header <tgmath.h> defines generic macros to use complex or
1107 real valued functions.
1109 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1111 * Andreas Jaeger provided a test suite for the math library.
1113 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1115 * Ulrich Drepper added character set conversion functions (iconv).
1117 * Optimized string functions have been added.
1119 * The localedata addon is now part of glibc.
1121 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1123 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1124 daemon for NSS (nscd).
1126 Missing a better place here are some numbers on improvements. Under
1127 Linux 2.1.125 un-tar-ing the kernel sources takes
1129 user system wall
1131 using local files 12.19s 6.88s 22.91s
1133 using NIS 13.92s 8.91s 26.34s
1135 using NIS & nscd 10.37s 7.34s 25.30s
1137 using NIS+ 27.57s 30.37s 640.46s
1139 using NIS+ & nscd 10.25s 7.83s 26.51s
1141 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1143 Keep in mind that non-namelookup related operations dominate above times.
1144 It was just a common complain that using NIS+ unpacking the kernel is
1145 horribly slow.
1147 [1] The old nscd implementation is not available anymore since it was
1148 distributed with glibc up to version 2.0.98 and thus is now replaced.
1150 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1152 * Mark Kettenis provided a Hesiod NSS module.
1154 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1155 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1157 * rcmd can now handle netgroups (Dick Streefland).
1159 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1160 Bambrough.
1162 * Support for the IPv6 protocol has been added to the socket API, as per the
1163 latest draft standards.
1165 * Support for Linux 2.2 has been added.
1167 * Interface changes relative to the latest 2.0.x release:
1168 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1169 addseverity NEW: Unix98
1170 alphasort64 NEW: LFS
1171 argp_err_exit_status NEW: argp, GNU ext
1172 argp_error NEW: argp, GNU ext
1173 argp_failure NEW: argp, GNU ext
1174 argp_help NEW: argp, GNU ext
1175 argp_parse NEW: argp, GNU ext
1176 argp_program_bug_address NEW: argp, GNU ext
1177 argp_program_version NEW: argp, GNU ext
1178 argp_program_version_hook NEW: argp, GNU ext
1179 argp_state_help NEW: argp, GNU ext
1180 argp_usage NEW: argp, GNU ext
1181 authdes_create NEW: Secure RPC
1182 authdes_getucred NEW: Secure RPC
1183 authdes_pk_create NEW: Secure RPC
1184 backtrace NEW: GNU ext.
1185 backtrace_symbols NEW: GNU ext.
1186 backtrace_symbols_fd NEW: GNU ext.
1187 cacos NEW: ISO C 9x
1188 cacosf NEW: ISO C 9x
1189 cacosh NEW: ISO C 9x
1190 cacoshf NEW: ISO C 9x
1191 cacoshl NEW: ISO C 9x
1192 cacosl NEW: ISO C 9x
1193 capget NEW: kernel
1194 capset NEW: kernel
1195 carg NEW: ISO C 9x
1196 cargf NEW: ISO C 9x
1197 cargl NEW: ISO C 9x
1198 casin NEW: ISO C 9x
1199 casinf NEW: ISO C 9x
1200 casinh NEW: ISO C 9x
1201 casinhf NEW: ISO C 9x
1202 casinhl NEW: ISO C 9x
1203 casinl NEW: ISO C 9x
1204 catan NEW: ISO C 9x
1205 catanf NEW: ISO C 9x
1206 catanh NEW: ISO C 9x
1207 catanhf NEW: ISO C 9x
1208 catanhl NEW: ISO C 9x
1209 catanl NEW: ISO C 9x
1210 cbc_crypt NEW: Secure RPC
1211 ccos NEW: ISO C 9x
1212 ccosf NEW: ISO C 9x
1213 ccosh NEW: ISO C 9x
1214 ccoshf NEW: ISO C 9x
1215 ccoshl NEW: ISO C 9x
1216 ccosl NEW: ISO C 9x
1217 cexp NEW: ISO C 9x
1218 cexpf NEW: ISO C 9x
1219 cexpl NEW: ISO C 9x
1220 cimag NEW: ISO C 9x
1221 cimagf NEW: ISO C 9x
1222 cimagl NEW: ISO C 9x
1223 clearerr_locked REMOVED
1224 clntunix_create NEW: sunrpc ext
1225 clog NEW: ISO C 9x
1226 clog10 NEW: ISO C 9x
1227 clog10f NEW: ISO C 9x
1228 clog10l NEW: ISO C 9x
1229 clogf NEW: ISO C 9x
1230 clogl NEW: ISO C 9x
1231 conj NEW: ISO C 9x
1232 conjf NEW: ISO C 9x
1233 conjl NEW: ISO C 9x
1234 cpow NEW: ISO C 9x
1235 cpowf NEW: ISO C 9x
1236 cpowl NEW: ISO C 9x
1237 cproj NEW: ISO C 9x
1238 cprojf NEW: ISO C 9x
1239 cprojl NEW: ISO C 9x
1240 creal NEW: ISO C 9x
1241 crealf NEW: ISO C 9x
1242 creall NEW: ISO C 9x
1243 creat64 NEW: LFS
1244 csin NEW: ISO C 9x
1245 csinf NEW: ISO C 9x
1246 csinh NEW: ISO C 9x
1247 csinhf NEW: ISO C 9x
1248 csinhl NEW: ISO C 9x
1249 csinl NEW: ISO C 9x
1250 csqrt NEW: ISO C 9x
1251 csqrtf NEW: ISO C 9x
1252 csqrtl NEW: ISO C 9x
1253 ctan NEW: ISO C 9x
1254 ctanf NEW: ISO C 9x
1255 ctanh NEW: ISO C 9x
1256 ctanhf NEW: ISO C 9x
1257 ctanhl NEW: ISO C 9x
1258 ctanl NEW: ISO C 9x
1259 des_setparity NEW: Secure RPC
1260 ecb_crypt NEW: Secure RPC
1261 endutxent NEW: Unix98
1262 exp10 NEW: ISO C 9x
1263 exp10f NEW: ISO C 9x
1264 exp10l NEW: ISO C 9x
1265 exp2 NEW: ISO C 9x
1266 exp2f NEW: ISO C 9x
1267 exp2l NEW: ISO C 9x
1268 fattach NEW: STREAMS
1269 fdetach NEW: STREAMS
1270 fdim NEW: ISO C 9x
1271 fdimf NEW: ISO C 9x
1272 fdiml NEW: ISO C 9x
1273 feclearexcept NEW: ISO C 9x
1274 fegetenv NEW: ISO C 9x
1275 fegetexceptflag NEW: ISO C 9x
1276 fegetround NEW: ISO C 9x
1277 feholdexcept NEW: ISO C 9x
1278 feof_locked REMOVED
1279 feraiseexcept NEW: ISO C 9x
1280 ferror_locked REMOVED
1281 fesetenv NEW: ISO C 9x
1282 fesetexceptflag NEW: ISO C 9x
1283 fesetround NEW: ISO C 9x
1284 fetestexcept NEW: ISO C 9x
1285 feupdateenv NEW: ISO C 9x
1286 fflush_locked REMOVED
1287 ffsl NEW: GNU ext.
1288 ffsll NEW: GNU ext.
1289 fgetpos64 NEW: LFS
1290 fgets_unlocked NEW: GNU ext.
1291 fileno_locked REMOVED
1292 fma NEW: ISO C 9x
1293 fmaf NEW: ISO C 9x
1294 fmal NEW: ISO C 9x
1295 fmax NEW: ISO C 9x
1296 fmaxf NEW: ISO C 9x
1297 fmaxl NEW: ISO C 9x
1298 fmin NEW: ISO C 9x
1299 fminf NEW: ISO C 9x
1300 fminl NEW: ISO C 9x
1301 fmtmsg NEW: Unix98
1302 fopen64 NEW: LFS
1303 fputc_locked REMOVED
1304 fputs_unlocked NEW: GNU ext.
1305 fread_unlocked NEW: GNU ext.
1306 freopen64 NEW: LFS
1307 fseeko NEW: Unix98
1308 fsetpos64 NEW: LFS
1309 fstatfs64 NEW: LFS
1310 fstatvfs NEW: Unix98
1311 fstatvfs64 NEW: LFS
1312 ftello NEW: Unix98
1313 ftello64 NEW: LFS
1314 ftruncate64 NEW: LFS
1315 ftw64 NEW: LFS
1316 fwrite_unlocked NEW: GNU ext.
1317 gai_strerror NEW: IPv6
1318 gamma_r REMOVED
1319 gammaf_r REMOVED
1320 gammal_r REMOVED
1321 getchar_locked REMOVED
1322 getdate NEW: Unix98
1323 getdate_err NEW: Unix98
1324 getdate_r NEW: GNU ext.
1325 getmsg NEW: STREAMS
1326 getnameinfo NEW: IPv6
1327 getnetname NEW: Secure RPC
1328 getpmsg NEW: STREAMS
1329 getpt NEW: Unix98 PTY
1330 getrlimit64 NEW: LFS
1331 getutxent NEW: Unix98
1332 getutxid NEW: Unix98
1333 getutxline NEW: Unix98
1334 glob64 NEW: GNU ext.
1335 globfree64 NEW: GNU ext.
1336 gnu_get_libc_release NEW: GNU ext.
1337 gnu_get_libc_version NEW: GNU ext.
1338 grantpt NEW: Unix98 PTY
1339 host2netname NEW: Secure RPC
1340 iconv NEW: iconv
1341 iconv_close NEW: iconv
1342 iconv_open NEW: iconv
1343 if_freenameindex NEW: IPv6
1344 if_indextoname NEW: IPv6
1345 if_nameindex NEW: IPv6
1346 if_nametoindex NEW: IPv6
1347 in6addr_any NEW: IPv6
1348 in6addr_loopback NEW: IPv6
1349 inet6_isipv4mapped NEW: IPv6
1350 isastream NEW: STREAMS
1351 iswblank NEW: GNU ext.
1352 key_decryptsession NEW: Secure RPC
1353 key_decryptsession_pk NEW: Secure RPC
1354 key_encryptsession NEW: Secure RPC
1355 key_encryptsession_pk NEW: Secure RPC
1356 key_gendes NEW: Secure RPC
1357 key_get_conv NEW: Secure RPC
1358 key_secretkey_is_set NEW: Secure RPC
1359 key_setnet NEW: Secure RPC
1360 key_setsecret NEW: Secure RPC
1361 llrint NEW: ISO C 9x
1362 llrintf NEW: ISO C 9x
1363 llrintl NEW: ISO C 9x
1364 llround NEW: ISO C 9x
1365 llroundf NEW: ISO C 9x
1366 llroundl NEW: ISO C 9x
1367 log2 NEW: ISO C 9x
1368 log2f NEW: ISO C 9x
1369 log2l NEW: ISO C 9x
1370 lrint NEW: ISO C 9x
1371 lrintf NEW: ISO C 9x
1372 lrintl NEW: ISO C 9x
1373 lround NEW: ISO C 9x
1374 lroundf NEW: ISO C 9x
1375 lroundl NEW: ISO C 9x
1376 lseek64 NEW: LFS
1377 makecontext NEW: Unix98
1378 mempcpy NEW: GNU ext.
1379 mmap64 NEW: LFS
1380 moncontrol REMOVED
1381 modify_ldt NEW: kernel
1382 nan NEW: ISO C 9x
1383 nanf NEW: ISO C 9x
1384 nanl NEW: ISO C 9x
1385 nearbyint NEW: ISO C 9x
1386 nearbyintf NEW: ISO C 9x
1387 nearbyintl NEW: ISO C 9x
1388 netname2host NEW: Secure RPC
1389 netname2user NEW: Secure RPC
1390 nexttoward NEW: ISO C 9x
1391 nexttowardf NEW: ISO C 9x
1392 nexttowardl NEW: ISO C 9x
1393 nftw NEW: Unix98
1394 nftw64 NEW: LFS
1395 open64 NEW: LFS
1396 passwd2des NEW: Secure RPC
1397 pow10 NEW: GNU ext.
1398 pow10f NEW: GNU ext.
1399 pow10l NEW: GNU ext.
1400 pread NEW: Unix98
1401 pread64 NEW: LFS
1402 printf_size NEW: GNU ext.
1403 printf_size_info NEW: GNU ext.
1404 profil_counter REMOVED
1405 pthread_mutexattr_getkind_np REPLACED
1406 pthread_mutexattr_setkind_np REPLACED
1407 ptsname NEW: Unix98 PTY
1408 ptsname_r NEW: Unix98 PTY
1409 putc_locked REMOVED
1410 putchar_locked REMOVED
1411 putgrent NEW: GNU ext.
1412 putmsg NEW: STREAMS
1413 putpmsg NEW: STREAMS
1414 pututxline NEW: Unix98
1415 pwrite NEW: Unix98
1416 pwrite64 NEW: LFS
1417 readdir64 NEW: LFS
1418 readdir64_r NEW: LFS
1419 remquo NEW: ISO C 9x
1420 remquof NEW: ISO C 9x
1421 remquol NEW: ISO C 9x
1422 round NEW: ISO C 9x
1423 roundf NEW: ISO C 9x
1424 roundl NEW: ISO C 9x
1425 rtime NEW: GNU ext.
1426 scalbln NEW: ISO C 9x
1427 scalblnf NEW: ISO C 9x
1428 scalblnl NEW: ISO C 9x
1429 scandir64 NEW: LFS
1430 sendfile NEW: kernel
1431 setcontext NEW: Unix98
1432 setrlimit64 NEW: LFS
1433 setutxent NEW: Unix98
1434 sighold NEW: Unix98
1435 sigignore NEW: Unix98
1436 sigqueue NEW: POSIX.1b
1437 sigrelse NEW: Unix98
1438 sigset NEW: POSIX.1b
1439 sigtimedwait NEW: POSIX.1b
1440 sigwaitinfo NEW: POSIX.1b
1441 sincos NEW: GNU ext.
1442 sincosf NEW: GNU ext.
1443 sincosl NEW: GNU ext.
1444 statfs64 NEW: LFS
1445 statvfs NEW: Unix98
1446 statvfs64 NEW: LFS
1447 strcasestr NEW: GNU ext.
1448 strtoimax NEW: ISO C 9x
1449 strtoumax NEW: ISO C 9x
1450 strverscmp NEW: GNU ext.
1451 svcauthdes_stats NEW: Secure RPC
1452 svcunix_create NEW: sunrpc etx
1453 svcunixfd_create NEW: sunrpc ext
1454 swapcontext NEW: Unix98
1455 tcgetsid NEW: Unix98 PTY
1456 tdestroy NEW: GNU ext.
1457 tgamma NEW: ISO C 9x
1458 tgammaf NEW: ISO C 9x
1459 tgammal NEW: ISO C 9x
1460 tmpfile64 NEW: LFS
1461 trunc NEW: ISO C 9x
1462 truncate64 NEW: LFS
1463 truncf NEW: ISO C 9x
1464 truncl NEW: ISO C 9x
1465 umount2 NEW: kernel
1466 unlockpt NEW: Unix98 PTY
1467 updwtmpx NEW: Unix98
1468 user2netname NEW: Secure RPC
1469 utmpxname NEW: Unix98
1470 versionsort NEW: GNU ext.
1471 versionsort64 NEW: GNU ext.
1472 waitid NEW: Unix98
1473 wcscasecmp NEW: GNU ext.
1474 wcsncasecmp NEW: GNU ext.
1475 wcsnlen NEW: GNU ext.
1476 wcstoimax NEW: ISO C 9x
1477 wcstoll NEW: ISO C 9x
1478 wcstoull NEW: ISO C 9x
1479 wcstoumax NEW: ISO C 9x
1480 wcswcs NEW: Unix98
1481 wordexp NEW: POSIX.2
1482 wordfree NEW: POSIX.2
1483 write_profiling REMOVED
1484 xdecrypt NEW: Secure RPC
1485 xdr_authdes_cred NEW: Secure RPC
1486 xdr_authdes_verf NEW: Secure RPC
1487 xdr_cryptkeyarg NEW: Secure RPC
1488 xdr_cryptkeyarg2 NEW: Secure RPC
1489 xdr_cryptkeyres NEW: Secure RPC
1490 xdr_getcredres NEW: Secure RPC
1491 xdr_key_netstarg NEW: Secure RPC
1492 xdr_key_netstres NEW: Secure RPC
1493 xdr_keybuf NEW: Secure RPC
1494 xdr_keystatus NEW: Secure RPC
1495 xdr_netnamestr NEW: Secure RPC
1496 xdr_sizeof NEW: Secure RPC
1497 xdr_unixcred NEW: sunrpc ext
1498 xencrypt NEW: Secure RPC
1499 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1500 \f
1501 Version 2.0.6
1503 * more bug fixes
1505 \f
1506 Version 2.0.5
1508 * more bug fixes
1510 * inet_ntoa is thread-safe
1512 * updwtmp is moved from libutil to libc
1514 * rewrite of cbrt function
1516 * update of timezone data
1517 \f
1518 Version 2.0.4
1520 * more bug fixes
1521 \f
1522 Version 2.0.3
1524 * more bug fixes
1525 \f
1526 Version 2.0.2
1528 * more bug fixes
1530 * add atoll function
1532 * fix complex problems in Berkeley DB code
1534 * fix math functions
1535 \f
1536 Version 2.0.1
1538 * fixed lots of header problems (especially Linux/GNU specific)
1540 * dynamic loader preserves all registers
1542 * Roland McGrath provided support for handling of auxiliary objects in
1543 the ELF dynamic loader.
1545 * support for parallel builds is improved
1546 \f
1547 Version 2.0
1549 * GNU extensions are no longer declared by default. To enable them you
1550 must define the macro `_GNU_SOURCE' in your program or compile with
1551 `-D_GNU_SOURCE'.
1553 * The library has changed from using GNU ld symbol aliases to using weak
1554 symbols where available. The ELF object file format supports weak
1555 symbols; GNU ld also supports weak symbols in the a.out format. (There
1556 is also now support for other GNU ld extensions in ELF. Use the
1557 `--with-elf' option to configure to indicate you have ELF, and
1558 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1559 of many files which contained only symbol aliases, reducing the size of
1560 the source and the compiled library; many other files were renamed to
1561 less cryptic names previously occupied by the symbol alias files.
1562 There is a new header file <elf.h> for programs which operate on
1563 files in the ELF format.
1565 * Converted to Autoconf version 2, so `configure' has more options.
1566 Run `configure --help' to see the details.
1568 * The library can now be configured to build profiling, highly-optimized
1569 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1570 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1571 `configure' enable building these extra libraries. The shared library is
1572 built by default when using both ELF and GNU ld. When shared libraries
1573 are enabled, the new library `-ldl' is available for arbitrary run-time
1574 loading of shared objects; its interface is defined in <dlfcn.h>. The
1575 new header file <link.h> gives access to the internals of the run-time
1576 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1577 application of same name on other systems and it provides information
1578 about dynamically linked binaries.
1580 * The C library now provides the run-time support code for profiling
1581 executables compiled with `-pg'. Programs can control the profiling code
1582 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1583 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1584 the support for this file format was contributed by David Mosberger-Tang.
1586 * The math code has been replaced with a math library based on fdlibm from
1587 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1588 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1589 functions. The math functions now reside in a separate library, so
1590 programs using them will need to use `-lm' their linking commands.
1592 * John C. Bowman contributed optimized ix87 assembler inline functions.
1594 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1595 mechanism similar to that found in Solaris 2. This is now used for the
1596 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1597 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1598 file controls what services are used for each individual database. This
1599 works by loading shared libraries with names specified in `nsswitch.conf',
1600 so service modules can be changed or added at any time without even
1601 relinking any program. Currently there are the file, db, and NIS based
1602 NSS services available.
1604 * The new functions `strtoq' and `strtouq' parse integer values from
1605 strings, like `strtol' and `strtoul', but they return `long long int' and
1606 `unsigned long long int' values, respectively (64-bit quantities).
1608 * The new functions `strtof' and `strtold' parse floating-point values from
1609 strings, like `strtod', but they return `float' and `long double' values,
1610 respectively (on some machines `double' and `long double' are the same).
1612 * Ulrich Drepper has contributed new implementations of the floating-point
1613 printing and reading code used in the `printf' family of functions and
1614 `strtod', `strtof', and `strtold'. These new functions are perfectly
1615 accurate, and much faster than the old ones.
1617 * The implementation of the POSIX locale model was completely rewritten by
1618 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1619 to compile the POSIX locale definition.
1621 * The former dummy implementations of the strcoll and strxfrm function are
1622 now replaced by fully functional code contributed by Ulrich Drepper. The
1623 collation information comes from the POSIX locale definitions.
1625 * The new header <langinfo.h> defines an interface for accessing
1626 various locale-dependent data (using the locale chosen with `setlocale').
1628 * Ulrich Drepper has contributed a new suite of functions for operation on
1629 wide-character and multibyte-character strings, in <wchar.h>;
1630 and classification and case conversion of wide characters, in <wctype.h>.
1631 These new functions are conforming to the ISO C, Amendement 1 specification.
1633 * There is now a second implementation of the standard I/O library available.
1634 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1635 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1637 * You can now use positional parameter specifications in format strings
1638 for the `printf' and `scanf' families of functions. For example,
1639 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1640 ``Number 6, Mr Jones''. This is mainly useful when providing different
1641 format strings for different languages, whose grammars may dictate
1642 different orderings of the values being printed. To support this
1643 feature, the interface for `register_printf_handler' has changed; see
1644 the header file <printf.h> for details.
1646 * The `printf' and `scanf' families of functions now understand a new
1647 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1648 to group numbers as indicated by the locale; for `scanf' and friends, this
1649 says to accept as valid only a number with all the proper grouping
1650 separators in the right places. In the default "C" locale, numbers are
1651 not grouped; but locales for specific countries will define the usual
1652 conventions (i.e. separate thousands with `,' in the US locale).
1654 * The pgrp functions have been regularized, slightly incompatibly but much
1655 less confusingly. The core functions are now `getpgid' and `setpgid',
1656 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1657 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1658 provided for compatibility. There is no longer an incompatible `getpgrp'
1659 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1661 * The new header file <fts.h> and suite of functions simplify programs that
1662 operate on directory trees. This code comes from 4.4 BSD.
1664 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1665 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1666 NSS scheme used in glibc.
1668 * There is a new malloc debugging hook `__memalign_hook'.
1670 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1671 `unsigned int' in <sys/types.h>. These are for compatibility only and
1672 their use is discouraged.
1674 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1675 done differently, so that it works even without GNU ld.
1677 * New function `euidaccess' checks allowed access to a file like `access',
1678 but using the effective IDs instead of the real IDs.
1680 * The time zone data files have been updated for the latest and greatest
1681 local time conventions of the countries of the world.
1683 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1684 see <dirent.h>.
1686 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1687 for formatting floating-point numbers. They are provided only for
1688 compatibility; new programs should use `sprintf' instead. There are
1689 also equivalent function for the `long double' floating-point type and
1690 all functions also exist in a reentrant form.
1692 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1693 functions for maintaining the login-record files (primarily of use to
1694 system programs such as `login'), and convenient functions for
1695 allocating and initializing a pseudo-terminal (pty) device.
1697 * Ulrich Drepper has contributed new support for System V style
1698 shared memory and IPC on systems that support it.
1700 * Ulrich Drepper has contributed several miscellaneous new functions found
1701 in System V: The `hsearch' family of functions provide an effective
1702 implementation of hash tables; `a64l' and `l64a' provide a very simple
1703 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1704 number generator.
1706 * Ulrich Drepper has contributed new reentrant counterparts for the
1707 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1709 * Ulrich Drepper has contributed new, highly-optimized versions of several
1710 string functions for the i486/Pentium family of processors.
1712 * Ulrich Drepper has updated the Linux-specific code, based largely
1713 on work done in Hongjiu Lu's version of GNU libc for Linux.
1714 The GNU library now supports Linux versions 2.0.10 and later,
1715 using the ELF object file format (i[3456]86-*-linux).
1717 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1719 * David Mosberger-Tang and Richard Henderson have ported the C library
1720 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1721 dynamic linking support for ELF/Alpha.
1723 * Richard Henderson contributed several Alpha optimized assembler function
1724 for arithmetic and string handling.
1726 * Ulrich Drepper has contributed a new set of message catalog functions to
1727 support multiple languages using the <libintl.h> interface, for use with
1728 his new package GNU gettext. Translation volunteers have contributed
1729 catalogs of the library's messages in Spanish, German, and Korean.
1731 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1732 program and the `catgets' function for reading the catalog files it
1733 creates. (The <libintl.h> interface is preferred; we include the
1734 <nl_types.h> interface using `catgets' only for source compatibility with
1735 programs already written to use it.)
1737 * New header file <values.h> gives SVID-compatible names for <limits.h>
1738 constants.
1740 * Various new macros, declarations, and small header files for compatibility
1741 with 4.4 BSD.
1743 * New function `group_member' is a convenient way to check if a process has
1744 a given effective group ID.
1746 * When using GCC 2.7 and later, the socket functions are now declared in a
1747 special way so that passing an argument of type `struct sockaddr_in *',
1748 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1749 `struct sockaddr *' type, does not generate a type-clash warning.
1751 * New function `error' declared in header file <error.h> is a convenient
1752 function for printing error messages and optionally exiting; this is the
1753 canonical function used in GNU programs. The new functions `err', `warn',
1754 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1755 doing the same thing.
1757 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1758 POSIX.2 `glob' function to do ~ and {...} expansion.
1760 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1761 `clearenv' which is used in POSIX.9 is also available.
1763 * New function `getsid' returns session ID number on systems that support it.
1765 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1766 files <db.h> and <mpool.h> provide a rich set of functions for several
1767 types of simple databases stored in memory and in files, and <ndbm.h> is
1768 an old `ndbm'-compatible interface using the `db' functions. Link with
1769 `-ldb' to get these functions.
1771 * New macro `strdupa' copies a string like `strdup', but uses local stack
1772 space from `alloca' instead of dynamic heap space from `malloc'.
1774 * New function `strnlen' is like `strlen' but searches only a given maximum
1775 number of characters for the null terminator. `stpncpy', `strndup' and
1776 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1777 function.
1779 * New function `statfs' in header <sys/statfs.h>.
1781 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1782 provide convenient functions for operating on blocks of null-terminated
1783 strings.
1785 * A new suite of functions in <utmp.h> handle all the details of reading
1786 and writing the utmp file.
1788 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1789 Thorsten Kukuk.
1791 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1792 completely POSIX compliant and also implemented the extended functionality
1793 to handle alternate digit representation and alternate era date formats.
1795 * Ulrich Drepper provided an implementation of the `strptime' function
1796 defined in XPG4.2 which transforms a string into a `struct tm' value.
1798 * Paul Eggert provided the tzselect shell script as part of the timezone
1799 code. The shell script makes it easy to select the correct timezone
1800 specification.
1802 * The implementation of the malloc family of functions is completely replaced
1803 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1804 The implementation uses the mmap function (if available) and it is
1805 optimized for the use in multi threaded programs.
1807 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1808 functions. This new functionality is usable by specifying a special
1809 salt string and it is compatible with implementation on *BSD systems.
1811 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1812 `getsubopt' to handle second level command line options, `bsd_signal'
1813 to access BSD style `signal' functionality, the obsolete `regexp' style
1814 expression matcher.
1816 * the `lchown' function is available on system which support this
1817 functionality.
1819 * The implementation of the shadow password handling function was contributed
1820 by Ulrich Drepper.
1822 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1824 * POSIX.1g support was added. The <sys/select.h> header is available,
1825 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1826 implementation of `getaddrinfo'.
1827 \f
1828 Version 1.09
1830 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1832 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1833 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1835 * The new function `daemon' from 4.4 BSD is useful for server programs that
1836 want to put themselves in the background.
1838 * Joel Sherrill has contributed support for several standalone boards that
1839 run without an operating system.
1841 * `printf', `scanf' and friends now accept a `q' type modifier for long
1842 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1844 * All of the code taken from BSD (notably most of the math and networking
1845 routines) has been updated from the BSD 4.4-Lite release.
1847 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1849 * The new functions `getdomainname' and `setdomainname' fetch or change the
1850 YP/NIS domain name. These are system calls which exist on systems which
1851 have YP (aka NIS).
1853 * The time zone data files have been updated for the latest international
1854 conventions.
1856 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1857 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1858 \f
1859 Version 1.08
1861 * The C library now includes support for Sun RPC, from Sun's free
1862 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1863 are included. (There is still no support for YP.)
1865 * Tom Quinn has contributed a port of the C library to SGI machines running
1866 Irix 4 (mips-sgi-irix4).
1868 * The new `lockf' function is a simplified interface to the locking
1869 facilities of `fcntl', included for compatibility.
1871 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1873 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1875 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1876 compatibility.
1878 * The error message printed by `assert' for a failed assertion now includes
1879 the name of the program (if using GNU ld) and the name of the calling
1880 function (with versions of GCC that support this).
1882 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1884 * The library now includes the <sys/mman.h> header file and memory
1885 management functions `mmap', `munmap', `mprotect', `msync', and
1886 `madvise', on systems that support those facilities.
1888 * The interface for `mcheck' has changed slightly: the function called to
1889 abort the program when an allocation inconsistency is detected now takes
1890 an argument that indicates the type of failure. The new function
1891 `mprobe' lets you request a consistency check for a particular block at
1892 any time (checks are normally done only when you call `free' or `realloc'
1893 on a block).
1895 * It is now possible to easily cross-compile the C library, building on one
1896 system a library to run on another machine and/or operating system. All
1897 you need to do is set the variable `HOST_CC' in `configparms' to the
1898 native compiler for programs to run on the machine you are building on (a
1899 few generator programs are used on Unix systems); set `CC' to the
1900 cross-compiler.
1902 * The new function `fexecve' (only implemented on the GNU system) executes
1903 a program file given a file descriptor already open on the file.
1904 \f
1905 Version 1.07
1907 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1908 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1910 * You can set the variable `libprefix' in `configparms' to specify a prefix
1911 to be prepended to installed library files; this makes it easy to install
1912 the GNU C library to be linked as `-lgnuc' or whatever.
1914 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1915 copies a limited number of characters from a string, and returns the
1916 address of the last character written.
1918 * You no longer need to check for whether the installed `stddef.h' is
1919 compatible with the GNU C library. configure now checks for you.
1921 * You can now define a per-stream `fileno' function to convert the
1922 stream's cookie into an integral file descriptor.
1924 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1925 allocates zero bytes of storage, and returns a unique pointer which
1926 you can pass to `realloc' or `free'. The behavior is undefined if
1927 you dereference this pointer.
1929 * The C library now runs on Sony NEWS m68k machines running either
1930 NewsOS 3 or NewsOS 4.
1932 * The new `syscall' function is a system-dependent primitive function
1933 for invoking system calls. It has the canonical behavior on Unix
1934 systems, including unreliable return values for some calls (such as
1935 `pipe', `fork' and `getppid').
1937 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1938 to `EAGAIN', which is the preferred name. On systems whose kernels
1939 use two distinct codes, the C library now translates EWOULDBLOCK to
1940 EAGAIN in every system call function.
1941 \f
1942 Version 1.06
1944 * The GNU C Library Reference Manual is now distributed with the library.
1945 `make dvi' will produce a DVI file of the printed manual.
1946 `make info' will produce Info files that you can read on line using C-h i
1947 in Emacs or the `info' program.
1948 Please send comments on the manual to bug-glibc-manual@gnu.org.
1950 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1952 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1954 * Jason Merrill has contributed a port to the Sequent Symmetry running
1955 Dynix version 3 (i386-sequent-dynix).
1957 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1958 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1960 * New function `memory_warnings' lets you arrange to get warnings when
1961 malloc is running out of memory to allocate, like Emacs gives you.
1963 * The C library now contains the relocating allocator used in Emacs 19 for
1964 its editing buffers. This allocator (ralloc) minimizes allocation
1965 overhead and fragmentation by moving allocated regions around whenever it
1966 needs to. You always refer to a ralloc'd region with a "handle" (a
1967 pointer to a pointer--an object of type `void **').
1969 * There is a new `printf' format: `%m' gives you the string corresponding
1970 to the error code in `errno'.
1972 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1973 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1974 pass, the `a' modifier says to fill in a `char **' you pass with a
1975 malloc'd string.
1977 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1978 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1979 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1981 * `mkstemp' is a traditional Unix function to atomically create and open a
1982 uniquely-named temporary file.
1983 \f
1984 Version 1.05
1986 * The standard location for the file that says what the local timezone is
1987 has changed again. It is now `/usr/local/etc/localtime' (or more
1988 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1990 * The distribution no longer contains any files with names longer than 14
1991 characters.
1993 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1994 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1996 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1997 \f
1998 Version 1.04
2000 * The configuration process has changed quite a bit. The `configure'
2001 script is now used just like the configuration scripts for other GNU
2002 packages. The `sysdeps' directory hierarchy is much rearranged.
2003 The file `INSTALL' explains the new scheme in detail.
2005 * The header files no longer need to be processed into ANSI C and
2006 traditional C versions. There is just one set of files to install, and
2007 it will work with ANSI or old C compilers (including `gcc -traditional').
2009 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2010 MIPS DECStation running Ultrix 4.
2012 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2013 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2014 made itself into a shared library.
2016 * Yet further improved support for the i386, running 4.3 BSD-like systems
2017 (such as Mach 3 with the Unix single-server), or System V.
2019 * New function `strncasecmp' to do case-insensitive string comparison
2020 with limited length.
2022 * New function `strsep' is a reentrant alternative to `strtok'.
2024 * New functions `scandir' and `alphasort' for searching directories.
2026 * New function `setenv' is a better interface to `putenv'.
2028 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2029 function for traversing a directory tree.
2031 * The GNU obstack package is now also part of the C library.
2032 The new function `open_obstack_stream' creates a stdio stream that
2033 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2034 formatted output directly to an obstack.
2036 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2037 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2039 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2041 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2042 things to your strings.
2044 * There are some new test programs: test-fseek, testmb, and testrand.
2046 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2047 These ports are not finished, but are a good starting place for really
2048 supporting those systems.
2050 * `/etc/localtime' is now the standard location for the file that says what
2051 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2052 This follows the general principle that `/etc' is the place for all local
2053 configuration files.
2055 * The C library header files now use `extern "C"' when used by the C++
2056 compiler, so the C library should now work with C++ code.
2058 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2059 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2060 in <strings.h>.)
2062 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2063 function which uses the `merge sort' algorithm, and is said to be
2064 significantly faster than the old GNU `qsort' function. Merge sort is
2065 now the standard `qsort' function. The new algorithm can require a lot
2066 of temporary storage; so, the old sorting function is called when the
2067 required storage is not available.
2069 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2070 provides the Unix `crypt' function, plus some other entry points.
2072 * The code and header files taken from 4.4 BSD have been updated with the
2073 latest files released from Berkeley.
2074 \f
2075 ----------------------------------------------------------------------
2076 Copyright information:
2078 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2080 Permission is granted to anyone to make or distribute verbatim copies
2081 of this document as received, in any medium, provided that the
2082 copyright notice and this permission notice are preserved,
2083 thus giving the recipient permission to redistribute in turn.
2085 Permission is granted to distribute modified versions
2086 of this document, or of portions of it,
2087 under the above conditions, provided also that they
2088 carry prominent notices stating who last changed them.
2089 \f
2090 Local variables:
2091 version-control: never
2092 fill-column: 76
2093 End: