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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, 369, 411, 706, 2074, 2541, 2547, 2548, 2551, 2552, 2553, 2554,
13 2562, 2563, 2565, 2566, 2576, 2636, 2678, 3335, 3768, 3866, 3868, 3976,
14 3992, 4026, 4108, 4596, 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578,
15 6649, 6730, 6770, 6794, 6884, 6890, 6894, 6895, 6907, 6911, 7064, 9739,
16 9902, 10110, 10135, 10140, 10153, 10210, 10254, 10346, 10545, 10716,
17 11174, 11322, 11365, 11451, 11494, 11521, 11959, 12047, 12340, 13058,
18 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532, 13533, 13547,
19 13551, 13552, 13553, 13555, 13559, 13566, 13583, 13592, 13618, 13637,
20 13656, 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13726, 13738,
21 13739, 13760, 13761, 13786, 13792, 13806, 13824, 13840, 13841, 13844,
22 13846, 13851, 13852, 13854, 13871, 13872, 13873, 13879, 13883, 13886,
23 13892, 13895, 13908, 13910, 13911, 13912, 13913, 13915, 13916, 13917,
24 13918, 13919, 13920, 13921, 13926, 13927, 13928, 13938, 13963, 13967,
25 13970, 13973
27 * ISO C11 support:
29 + define static_assert
31 + do not declare gets
33 + declare at_quick_exit and quick_exit also for ISO C11
35 + aligned_alloc. NB: The code is deliberately allows the size parameter
36 to not be a multiple of the alignment. This is a moronic requirement
37 in the standard but it is only a requirement on the caller, not the
38 implementation.
40 + timespec_get added
42 + uchar.h support added
44 + CMPLX, CMPLXF, CMPLXL added
46 Implemented by Ulrich Drepper.
48 * Support for the IA-64 is removed and could live in ports.
50 * Remove support for anything but ELF binary format
52 * Checking versions of poll, ppoll added.
53 Implemented by Ulrich Drepper.
55 * More generic and 64-bit performance optimizations to math functions.
56 Implemented by Ulrich Drepper.
57 \f
58 Version 2.15
60 * The following bugs are resolved with this release:
62 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
63 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
64 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
65 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
66 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
67 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
68 13484, 13506, 13515, 13523, 13524, 13538, 13540
70 * New program pldd to list loaded object of a process
71 Implemented by Ulrich Drepper.
73 * Add nss_db support back to glibc. No more dependency on Berkeley db
74 and support for initgroups lookups.
75 Implemented by Ulrich Drepper.
77 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
78 Contributed by HJ Lu.
80 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
81 Contributed by HJ Lu.
83 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
84 on x86-32 and x86-64.
85 Contributed by Liubov Dmitrieva.
87 * Optimized strchr and strrchr for SSE on x86-32.
88 Contributed by Liubov Dmitrieva.
90 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
91 for x86-64 and x86-32.
92 Contributed by Liubov Dmitrieva.
94 * New interfaces: scandirat, scandirat64
95 Implemented by Ulrich Drepper.
97 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
98 Implemented by Ulrich Drepper.
100 * nscd now also caches the netgroup database.
101 Implemented by Ulrich Drepper.
103 * Integrate libm with gcc's -ffinite-math-only option.
104 Implemented by Ulrich Drepper.
106 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
107 to math functions. Implemented by Ulrich Drepper.
109 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
110 Implemented by Ulrich Drepper.
112 * New Linux interfaces: process_vm_readv, process_vm_writev
114 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
115 Implemented by Ulrich Drepper.
117 * Optimized nearbyint and strcasecmp for PPC.
118 Implemented by Adhemerval Zanella.
120 * New locales: bho_IN, unm_US, es_CU, ta_LK
121 \f
122 Version 2.14
124 * The following bugs are resolved with this release:
126 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
127 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
128 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
129 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
130 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
131 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
132 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
133 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
134 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
135 12795, 12811, 12813, 12814, 12841
137 * The RPC implementation in libc is obsoleted. Old programs keep working
138 but new programs cannot be linked with the routines in libc anymore.
139 Programs in need of RPC functionality must be linked against TI-RPC.
140 The TI-RPC implementation is IPv6 enabled and there are other benefits.
142 Visible changes of this change include (obviously) the inability to link
143 programs using RPC functions without referencing the TI-RPC library and the
144 removal of the RPC headers from the glibc headers.
145 Implemented by Ulrich Drepper.
147 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
148 syncfs, setns, sendmmsg
150 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
151 yue_HK, lij_IT, mhr_RU
153 * New encodings: CP770, CP771, CP772, CP773, CP774
155 * New program sotruss to trace calls through PLTs
156 Implemented by Ulrich Drepper.
158 * The malloc hook implementation is marked deprecated and will be removed
159 from the default implementation in the next version. The design never
160 worked ever since the introduction of threads. Even programs which do
161 not create threads themselves can use multiple threads created internally.
162 \f
163 Version 2.13
165 * The following bugs are resolved with this release:
167 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
168 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
169 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
170 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
171 12378, 12394, 12397
173 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
175 * POWER7 optimizations: memset, memcmp, strncmp
177 * New optimized string functions for x86-64: strnlen (SSE2),
178 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
179 Implemented by Ulrich Drepper.
180 \f
181 Version 2.12
183 * The following bugs are resolved with this release:
185 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
186 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
187 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
188 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
189 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
190 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
191 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
192 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
194 * New interfaces: pthread_getname_np, pthread_setname_np
196 * New Linux interface: recvmmsg
198 * STT_GNU_IFUNC implemented for Sparc by David Miller.
200 * The dynamic linker now recognizes supported ABI versions from the
201 EI_ABIVERSION field in the ELF header.
202 Implemented by Ulrich Drepper.
204 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
205 will not be used to fill in password fields in the passwd.byname replies.
206 Instead it is used to synthesize the shadow.byname table, should it be
207 missing. This is a useful mode in some installations involving Solaris.
208 Implemented by Ulrich Drepper.
210 * New locales: kok_IN, sq_MK, cv_RU
211 \f
212 Version 2.11
214 * The following bugs are resolved with this release:
216 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
217 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
218 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
219 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
220 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
221 10789, 10817, 10823, 10840, 10847
223 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
224 mkostemps64
225 Implemented by Ulrich Drepper.
227 * Checking version of longjmp added that fails if an uninitialized stack
228 frame would be created. Implemented by Ulrich Drepper.
230 * STT_GNU_IFUNC is now supported in static executables.
231 Implemented by H.J. Lu.
233 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
235 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
236 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
237 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
238 Contributed by H.J. Lu.
240 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
241 Implemented by Ulrich Drepper.
243 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
244 strstr, strcasestr.
245 Contributed by H.J. Lu.
247 * Support for fma instruction in AVX on x86-64.
248 Implemented by H.J. Lu and Ulrich Drepper.
250 * AVX support in x86-64 auditing support in ld.so.
251 Implemented by H.J. Lu.
253 * STB_GNU_UNIQUE support added.
254 Implemented by Ulrich Drepper.
256 * Implement second fallback mode for optimized DNS lookup for even more
257 broken environments. If two requests from the same port are not
258 handled correctly close the socket and open a new one before sending
259 the second request. The 'single-request-reopen' option in /etc/resolv.conf
260 can be used to select this mode right away, instead of rediscovering the
261 necessity is every process again.
262 Implemented by Ulrich Drepper.
264 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
265 Implemented by Adam Tkac.
267 * Optimized iconv conversions for S390x.
268 Implemented by Andreas Krebbel.
270 * Using condvars with PI mutexes is now more efficient due to kernel
271 support for requeueing to PI futexes. NPTL support added for x86-64.
272 Implemented by Ulrich Drepper.
274 * New locales: ps_AF, my_MM
275 \f
276 Version 2.10
278 * The following bugs are resolved with this release:
280 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
281 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
282 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
283 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
284 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
286 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
287 Implemented by Ulrich Drepper.
289 * New Linux interfaces: accept4, fallocate, fallocate64.
290 Implemented by Ulrich Drepper.
292 * Correct declarations of string function when used in C++ code. This
293 could lead to compile errors for invalid C++ code.
295 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
296 now in POSIX.
298 * New POSIX 2008 interface: psiginfo
299 Implemented by Ulrich Drepper.
301 * New ISO C++1x interfaces: quick_exit, at_quick_exit
302 Implemented by Ulrich Drepper.
304 * Support for selecting between multiple function definitions at runtime
305 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
307 * The libcrypt library can now use the hash function implementations in
308 NSS. Implemented by Ulrich Drepper.
310 * The malloc implementation can be compiled to be less memory efficient
311 but higher performing in multi-threaded programs.
312 Implemented by Ulrich Drepper.
314 * New locales: nan_TW@latin, ks_IN
316 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
317 Implemented by Ulrich Drepper.
319 * Extended printf hook support. It is possible to use user-defined types
320 and extend existing format specifiers.
321 Implemented by Ulrich Drepper.
323 * Handling for group shadow files has been added.
324 Implemented by Ulrich Drepper.
326 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
327 servers (the case, e.g., for some people using the built-in DNS
328 server in ADSL modems/routers). There is a once-per-process timeout
329 in case of a broken server. To avoid it, users can run nscd or put
330 'options single-request' in /etc/resolv.conf.
331 Implemented by Ulrich Drepper.
332 \f
333 Version 2.9
335 * The following bugs are resolved with this release:
337 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
338 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
339 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
340 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
341 6968, 6974, 6980, 6995, 7008, 7009, 7029
343 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
344 up at the same time. Implemented by Ulrich Drepper.
346 * TLS descriptors for LD and GD on x86 and x86-64.
347 Implemented by Alexandre Oliva.
349 * getaddrinfo now handles DCCP and UDPlite.
350 Implemented by Ulrich Drepper.
352 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
353 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
354 Implemented by Ulrich Drepper.
356 * New implementation of memmem, strstr, and strcasestr which is O(n).
357 Implemented by Eric Blake.
359 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
361 * Implement "e" option for popen to open file descriptor with the
362 close-on-exec flag set. Implemented by Ulrich Drepper.
364 * Implement "b" mode for fmemopen. In this mode writes writes don't
365 implicitly add a NUL byte and seeks from the end of the buffer really
366 use the buffer end, not the string length as the basis.
367 Implemented by Ulrich Drepper.
369 * Many functions, exported and internal, now atomically set the close-on-exec
370 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
372 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
373 Sinhala)
374 Implemented by Pravin Satpute.
376 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
377 \f
378 Version 2.8
380 * The following bugs are resolved with this release:
382 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
383 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
384 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
385 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
386 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
387 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
388 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
390 * New locales: bo_CN, bo_IN, shs_CA.
392 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
394 * Sorting rules for some Indian languages (Devanagari and Gujarati).
395 Implemented by Pravin Satpute.
397 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
399 * nscd caches now all timeouts for DNS entries
400 Implemented by Ulrich Drepper.
402 * nscd is more efficient and wakes up less often.
403 Implemented by Ulrich Drepper.
405 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
406 vdprintf, and obstack_vprintf.
407 Implemented by Jakub Jelinek.
409 * Faster memset for x86-64.
410 Implemented by Harsha Jagasia and H.J. Lu.
412 * Faster memcpy on x86.
413 Implemented by Ulrich Drepper.
415 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
416 Implemented by Ulrich Drepper.
418 * Faster sqrt and sqrtf implemention for some PPC variants.
419 Implemented by Stephen Munroe.
420 \f
421 Version 2.7
423 * The following bugs are resolved with this release:
425 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
426 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
427 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
428 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
429 5071, 5103, 5104, 5112, 5113, 5184, 5186
431 * More checking functions: fread, fread_unlocked, open*, mq_open.
432 Implemented by Jakub Jelinek and Ulrich Drepper.
434 * Extend fortification to C++. Implemented by Jakub Jelinek.
436 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
437 by not recognizing 'a' as a modifier when those specs are requested.
438 Implemented by Jakub Jelinek.
440 * PPC optimizations to math and string functions.
441 Implemented by Steven Munroe.
443 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
444 options to be passed. Implemented by Ulrich Drepper.
446 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
448 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
449 Implemented by Ulrich Drepper.
451 * Handle private futexes in the NPTL implementation.
452 Implemented by Jakub Jelinek and Ulrich Drepper.
454 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
455 Implemented by Roland McGrath and Ulrich Drepper.
457 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
459 * SHA-256 and SHA-512 based password encryption.
460 Implemented by Ulrich Drepper.
462 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
463 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
464 yo_NG.
466 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
467 Implemented by Ulrich Drepper.
468 \f
469 Version 2.6
471 * The following bugs are resolved with this release:
473 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
474 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
475 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
476 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
477 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
478 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
479 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
480 4702, 4858
482 * New Linux interfaces: epoll_pwait, sched_getcpu.
484 * New generic interfaces: strerror_l.
486 * nscd can now cache the services database. Implemented by Ulrich Drepper.
487 \f
488 Version 2.5
490 * The following bugs are resolved with this release:
492 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
493 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
494 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
495 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
496 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
497 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
498 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
499 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
500 3225, 3251, 3252, 3253, 3273
502 * For Linux, the sorting of addresses returned by getaddrinfo now also
503 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
504 Implemented by Ulrich Drepper.
506 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
507 Implemented by Ulrich Drepper.
509 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
511 * New iconv module for MIK. Contributed by Alexander Shopov.
513 * For sites with broken group and/or passwd database, the auto-propagate
514 option of nscd can prevent creating ID lookup entries from the results
515 of a name lookup and vice versa. This usually is no problem but some
516 site might have problems with the default behavior.
517 Implemented by Ulrich Drepper.
519 * Iterating over entire database in NIS can be slow. With the
520 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
521 to trade time for memory. The entire database will be read at once.
522 Implemented by Ulrich Drepper.
524 * The interfaces introduced in RFC 3542 have been implemented by
525 Ulrich Drepper.
527 * Support for the new ELF hash table format was added by Ulrich Drepper.
529 * Support for priority inheritance mutexes added by Jakub Jelinek and
530 Ulrich Drepper.
532 * Support for priority protected mutexes added by Jakub Jelinek.
534 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
535 or_IN, csb_PL, fy_NL, sr_ME.
536 \f
537 Version 2.4
539 * More overflow detection functions.
541 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
542 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
544 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
545 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
546 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
547 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
548 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
549 by Masahide Washizawa.
551 * It is now possible to install audit libraries for the dynamic linker using
552 LD_AUDIT. Implemented by Ulrich Drepper.
554 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
555 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
556 For a libc and libpthread that works well on Linux 2.4 kernels, we
557 recommend using the stable 2.3 branch.
559 * The new function open_wmemstream acts like open_memstream,
560 but uses a wchar_t wide character buffer.
562 * The new function ppoll is an improved version of poll, similar to pselect.
564 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
565 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
566 renameat, unlinkat, linkat, symlinkat, readlinkat.
568 * New Linux kernel system calls: unshare,
569 inotify_init, inotify_add_watch, inotify_rm_watch.
571 * The euidaccess function is now also known by the alias eaccess,
572 for compatibility with some other systems.
574 * Timezone data updated to 2006b version.
575 \f
576 Version 2.3.6
578 * The following bugs are resolved with this release:
580 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
581 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
582 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
583 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
584 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
585 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
587 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
589 * As of this release, GCC 4 can be used to compile the C Library.
591 * Timezone data updated to 2005m version.
592 \f
593 Version 2.3.5
595 * The following bugs are resolved with this release:
597 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
598 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
599 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
600 777, 787, 821, 822, 823, 825
602 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
603 \f
604 Version 2.3.4
606 * Support for RFC 3678. Real implementations exist only for Linux so far.
607 Implemented by Ulrich Drepper.
609 * nscd can now cache entries persistently. Expiring entries are reloaded.
610 For speedups the cache can be shared in memory with client processes.
611 Implemented by Ulrich Drepper.
613 * nscd can now perform SELinux checks.
614 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
616 * getaddrinfo queries are now cached. Canonical name lookup is performed
617 efficiently.
618 Implemented by Ulrich Drepper.
620 * The nothrow function attribute is used when headers are used by gcc when
621 compiling C code. This can avoid significant amounts of exception
622 handling data.
624 * The malloc functions perform more error checking and are stricter when
625 it comes to reacting on errors. The default action is to terminate
626 the process after showing an error message. Implemented by Ulrich Drepper.
628 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
629 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
631 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
632 namespaces using the new function dlmopen(). This feature is of course,
633 like most other dynamic loading functionality, not available in statically
634 linked applications. Implemented by Ulrich Drepper.
636 * Low-overhead boundary checking variants of string and some stdio functions
637 were added. These are to be used in conjunction with a gcc patch by
638 Jakub Jelinek which adds calls to these functions if possible.
639 Implemented by Jakub Jelinek and Ulrich Drepper.
641 * Old code for several operating systems and machine architectures that
642 have not been in working condition in a long time have been removed from
643 the main source tree maintained by the GNU C Library's maintainers.
644 These files are now reside in the separate `ports' source module
645 that is usable as an add-on when building the library.
646 \f
647 Version 2.3.3
649 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
650 interrogate the dynamic linker, compatible with the Solaris interface.
652 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
653 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
655 * getifaddrs now uses the netlink interface on Linux to get its information.
656 Implemented by Thorsten Kukuk.
658 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
659 Implemented by Ulrich Drepper.
661 * support for non-executable stacks on x86 has been added. Changes mostly
662 by Roland McGrath.
664 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
665 and Ulrich Drepper.
667 * getaddrinfo now performs destination address selection according to
668 RFC 3484.
669 \f
670 Version 2.3.2
672 * Thread-safe interfaces for many functions that access locale data
673 were added in version 2.3, but these features were omitted from NEWS.
674 Many functions have variants with an `_l' suffix that take a `locale_t'
675 object as a parameter rather than consulting the current locale.
676 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
677 create and maintain `locale_t' objects. Additionally, the new function
678 `uselocale' sets "the current locale" (as used by functions not so
679 parameterized) set for an individual thread. These features were added
680 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
682 * The functions getresuid, getresgid, setresuid, and setresgid, which
683 have long been available on Linux, are now declared in <unistd.h>
684 and are now also available on the Hurd.
686 * ELF thread-local storage support (TLS) now works on x86-64.
688 * The new dynamic string token $LIB is expanded in shared library names.
689 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
691 * Aldy Hernandez contributed complete software floating point support for
692 PowerPC machines with no FPU.
694 * fexecve is implemented on Linux.
696 * The `btowc' function should work at least twice as fast due to
697 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
699 * With approriate thread add-ons cancelable functions are now implemented
700 in libc.so as well. No need to call the function in libpthread. This
701 change allowed to finally disable the incorrect and expensive handling
702 of weak definition in ld.so.
704 * Yet more PLT entries in libc.so have been removed. We finally arrived
705 at the bare minimum. Startup times improved appropriately.
707 * Support for the new Linux/x86 system call interface was added. The
708 AT_SYSINFO auxiliary vector entry is recognized and handled.
709 \f
710 Version 2.3
712 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
713 charsets.
715 * iconv (the program and the interface) now accepts empty names (excluding
716 options like //TRANSLIT) to mean "use charset of current locale".
718 * localedef can now transliterate characters in strings which are not in
719 the provided charmap. The information from the input locale is used.
721 * Prelinking support was added for ELF targets. This requires additional
722 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
724 * Read-only stdio streams now use mmap to speed up operation by eliminating
725 copying and buffer underflows. To use add 'm' to the mode string of
726 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
728 * The malloc functions were completely rewritten by Wolfram Gloger based
729 on Doug Lea's malloc-2.7.0.c.
731 * Isamu Hasegawa contributed a completely new and POSIX-conformant
732 implementation of regex.
734 * Bruno Haible upgraded the iconv and locale implementation to support
735 Unicode 3.2.
737 * Contents of the LC_* and LANG environment variables in the CEN style are
738 not recognized anymore. It never was used. Change by Ulrich Drepper.
740 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
741 thread-local storage (TLS) ABI on some platforms.
742 Changes by Ulrich Drepper. SH support by Kaz Kojima.
744 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
745 EUC-JISX0213, and TSCII.
747 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
748 BSD-compatible interface for getting all network interface addresses.
749 Implementation for IPv4 by Roland McGrath.
751 * Loading of locale data is faster due to the introduction of a locale
752 archive. Implemented by Roland McGrath and Ulrich Drepper.
754 * Startup times are significantly reduced by not using exported functions
755 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
756 and Ulrich Drepper.
758 * Steven Munroe contributed a port to PowerPC64/Linux.
759 \f
760 Version 2.2.6
762 * The Hurd now uses the GNU libio implementation of stdio rather than the
763 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
765 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
766 with the same behavior as the Linux system call of the same name.
767 \f
768 Version 2.2.5
770 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
771 128-bit long double format.
773 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
774 IBM1161, and IBM1162 charsets.
776 * Andreas Jaeger contributed a port to x86-64/Linux.
778 * Peter Bruin contributed a port to PowerPC/Hurd.
780 * libc functions using I/O streams now can handle wide-oriented streams
781 as well.
783 * optimizations in the dynamic linker. Binaries created by recent binutils
784 versions start up quicker due to reduced time spent on relocations.
786 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
787 \f
788 Version 2.2.4
790 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
791 asinh, atanh, j0 for the 128-bit long double format.
793 * Bruno Haible updated all the code handling Unicode in some form to
794 support Unicode 3.1.
796 * Speed of regex for single-byte locales is back to previous levels.
797 Patch by Isamu Hasegawa.
799 * Alpha, SPARC, and IA-64 now also using floating stacks.
801 * Startup time of internationalized applications greatly improved through
802 iconv cache. Use iconvconfig to generate the cache file.
803 Contributed by Ulrich Drepper.
805 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
806 severe performance problems. Patch by David Mosberger.
808 * The Hurd port got a lot more functionality like AIO, various stdio
809 extensions, etc. Mainly done by Roland McGrath.
811 * mtrace can now lookup symbols in shared libraries.
812 \f
813 Version 2.2.3
815 * Intel's IA-64 math library is largely integrated. It provides fast and
816 accurate implementatations for most basic and standard math functions
817 in float, double, and long double format.
819 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
820 and asin for the 96-bit long double format and asin, log, tan for the
821 128-bit long double format.
823 * The beginning of a last-bit accurate math library by IBM Haifa were added.
824 The basic double functions exist today. Contributed by Abraham Ziv
825 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
826 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
828 * An asynchronous name lookup library was added. The interface is designed
829 after POSIX AIO. The proposal was circulated beforehand to get comments.
830 No negative ones came in. Implemented by Ulrich Drepper.
832 * Port to S390/64bit contributed by Martin Schwidefsky
833 <schwidefsky@de.ibm.com>.
835 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
836 of functions for Linux/IA-64.
838 * The RPC code is now thread safe. Threads can now use the same service
839 of different services at the same time. Patch by Eric Norum
840 <eric.norum@usask.ca> with some help by Ulrich Drepper.
842 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
843 family of functions for Linux/S390.
845 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
846 of functions for Linux/x86.
848 * Port to Linux/CRIS contributed by Axis Communications.
849 \f
850 Version 2.2.2
852 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
853 we can now check for namespace violations and missing declarations. The
854 result is that almost all headers are now Unix-compliant (as defined in
855 the upcoming XPG6). The negative side is that some programs might need
856 corrections, too, if they depend on the incorrect form of the headers in
857 previous versions which defined too many symbols and included too many
858 other headers.
860 * regex now handles multibyte character sets correctly.
861 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
863 * iconv (the program) does now conform to the upcoming XPG6 and handles
864 charmaps. Instead of the charset names the path of charmaps can be
865 provided and the conversion happens based on this data.
866 Contributed by Ulrich Drepper.
868 * The locale program now provides detailed information about the installed
869 locales. While
871 locale -a
873 only lists the names of the supported locales
875 locale -a --verbose
877 provides details such as country, language, and codeset name.
878 Contributed by Ulrich Drepper.
879 \f
880 Version 2.2.1
882 * The gencat program now parses the input file according to the charset
883 selected by the LC_CTYPE category. This is important for stateful
884 character sets. To make generating catalogs easier there is a way
885 to overwrite the charset selected by the locale: before the first
886 message or $ quote line the catalog can contain a line like
888 $ codeset=ISO-8859-2
890 to select the charset (ISO-8859-2 in this case).
892 Implemented by Shinya Hanataka and Ulrich Drepper.
894 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
895 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
896 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
898 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
899 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
901 * The LANGUAGE environment variable is now ignored unless the locale is
902 changed from the default "C" locale.
904 * The usual bug fixes.
905 \f
906 Version 2.2
908 * Greg McGary added runtime support for bounds checking using gcc's
909 new -fbounded-pointers option. ix86 target is complete. PowerPC
910 is in progress.
912 * Thorsten Kukuk added secure mode support to nscd.
914 * The Berkeley db libraries have been removed.
916 Related, the nss_db module is now in a separate package since it
917 obviously requires a database library being available.
919 * Wide character I/O streams implemented by Ulrich Drepper.
921 * Functions from the extended socket API added by Ulrich Drepper.
923 * Functions feenableexcept and fedisableexcept to control the
924 behaviour of individual exceptions have been added by Andreas Jaeger.
926 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
928 * The resolver code has been updated from bind 8.2.3-T5B which supports
929 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
930 and Mark Kettenis.
932 This change could in some situations effect backward compatibility. Since
933 now `_res' is a thread-local instead of a global variable, modifying it
934 in one thread does not have any effect in other threads.
936 The resolver library was also extended to allow IPv6 as the transport
937 protocol for the requests. This work was done by Stig Venaas.
939 * Compatibility code for K&R C compilers has been removed from the
940 header files. A ISO C compiler is needed to use the library
941 (conforming to either C89 or C99 standard).
943 * Complete rewrite of the localedef program to support multibyte character
944 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
945 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
946 Implemented by Ulrich Drepper.
948 Bruno Haible significantly improved the generation and use of the data
949 structures for the wide character tables.
951 * Plural handling in gettext implemented by Ulrich Drepper.
953 * The utmp daemon has been removed.
955 * The port to MIPS-Linux has been finished by Andreas Jaeger.
957 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
958 and Yutaka Niibe.
960 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
962 * POSIX barriers implemented by Kaz Kylheku.
964 * POSIX spawn function family implemented by Ulrich Drepper.
966 * POSIX spinlocks are now available.
968 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
970 * the configure option --enable-kernel=X.Y.Z allows to strip out
971 compatibility for kernel versions before X.Y.Z. This is currently only
972 implemented for Linux.
974 * the sockaddr_in6 structure changed. The IPv6 working group added a new
975 field sin6_scope_id. This means that all programs using IPv6 should be
976 recompiled. Don't expect binary compatibility with previous glibc
977 versions.
979 * various conversion modules for IBM character sets contributed by
980 Masahide Washizawa.
982 * IA-64 port by Jes Sorensen and HJ Lu.
984 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
985 Compiling the GNU C Library for Linux/ia64
986 ******************************************
988 Please refer to the file INSTALL in the same directory as you found
989 this file for general information about configuring and compiling
990 glibc.
992 For general inquiries about glibc under Linux/ia64 please use the
993 following mailing list linux-ia64@linuxia64.org or one of the relevant
994 glibc mailing lists.
996 Recommended Tools for Compilation
997 =================================
999 In order for glibc-2.2 to build correctly on the ia64 you need at
1000 least the following versions of the GNU tools (the :
1002 * The Cygnus toolchain snapshot for the ia64 as of August 4
1003 including the provided set of patches. It is however recommend
1004 you use the October 24 toolchain snapshot or a more recent version.
1006 OR alternatively you can try the following (the Cygnus toolchain is
1007 the recommended solution):
1009 * GCC and binutils, GAS and GNU LD out of CVS from
1010 sources.redhat.com as of August 28, 2000 or later. The CVS tree
1011 may require special patches to work properly on the ia64.
1013 Configuring and compiling GNU Libc for Linux/ia64
1014 =================================================
1016 The library requires Linux kernel version 2.4.0-test4-000728 or
1017 later to funtion properly. Besides that it support for debug libraries
1018 is currently untested. Hence the following options
1019 are required for configuring the library:
1021 --disable-debug --enable-kernel=2.4.0
1023 It is also important that you make sure the library picks up the
1024 appropriate kernel header files, if you do not have recent enough
1025 kernel headers in /usr/src/linux/include, you should use the
1026 --with-headers=<path> option to specify the location.
1028 As an example I personally use the following options to configure
1029 the library:
1031 --disable-debug
1032 --disable-cvs
1033 --enable-kernel=2.4.0
1034 --host=ia64-linux
1035 --enable-add-ons=yes
1036 --prefix=/usr
1037 --with-headers=/home/jes/linux/include
1040 Good luck
1042 Jes Sorensen <jes@linuxcare.com>,
1043 November 14th, 2000
1044 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1045 \f
1046 Version 2.1.3
1048 * bug fixes
1050 \f
1051 Version 2.1.2
1053 * bug fixes
1055 \f
1056 Version 2.1.1
1058 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1060 * New xdr functions are added; some rpc functions are now 64bit clean.
1062 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1064 * Fixed known incompatibilities with glibc 2.0.
1066 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1068 * Optimized a number of functions (especially the ELF dynamic loader).
1070 * Update timezone data files.
1072 * lots of charmaps corrections
1074 * some new locale definitions and charmaps
1076 \f
1077 Version 2.1
1079 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1080 conform to POSIX member type requirements. Symbol versions have been
1081 adjusted as needed within the library, and for direct use by applications,
1082 but there is potential for problems if third-party libraries use
1083 struct timeval as part of their interface. This does not present
1084 a problem for X and other "essential" system libraries.
1086 * An additional locale model to support C++ Standard Library locale
1087 model and probably more was implemented by Ulrich Drepper.
1089 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1090 symbol level.
1092 * Miles Bader provided the `argp' function family to support hierachical
1093 command line argument parsing, layered on top of getopt.
1095 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1097 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1098 numbers.
1100 * scanf recognizes the %a and %A format for scanning floating point numbers.
1102 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1103 information and interfaces for the available integer types.
1105 * about 130 new math functions were added to implement the ISO C9x math
1106 library.
1108 * the new header <complex.h> contains definitions of the complex math
1109 functions from ISO C 9X.
1111 * the new header <tgmath.h> defines generic macros to use complex or
1112 real valued functions.
1114 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1116 * Andreas Jaeger provided a test suite for the math library.
1118 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1120 * Ulrich Drepper added character set conversion functions (iconv).
1122 * Optimized string functions have been added.
1124 * The localedata addon is now part of glibc.
1126 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1128 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1129 daemon for NSS (nscd).
1131 Missing a better place here are some numbers on improvements. Under
1132 Linux 2.1.125 un-tar-ing the kernel sources takes
1134 user system wall
1136 using local files 12.19s 6.88s 22.91s
1138 using NIS 13.92s 8.91s 26.34s
1140 using NIS & nscd 10.37s 7.34s 25.30s
1142 using NIS+ 27.57s 30.37s 640.46s
1144 using NIS+ & nscd 10.25s 7.83s 26.51s
1146 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1148 Keep in mind that non-namelookup related operations dominate above times.
1149 It was just a common complain that using NIS+ unpacking the kernel is
1150 horribly slow.
1152 [1] The old nscd implementation is not available anymore since it was
1153 distributed with glibc up to version 2.0.98 and thus is now replaced.
1155 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1157 * Mark Kettenis provided a Hesiod NSS module.
1159 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1160 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1162 * rcmd can now handle netgroups (Dick Streefland).
1164 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1165 Bambrough.
1167 * Support for the IPv6 protocol has been added to the socket API, as per the
1168 latest draft standards.
1170 * Support for Linux 2.2 has been added.
1172 * Interface changes relative to the latest 2.0.x release:
1173 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1174 addseverity NEW: Unix98
1175 alphasort64 NEW: LFS
1176 argp_err_exit_status NEW: argp, GNU ext
1177 argp_error NEW: argp, GNU ext
1178 argp_failure NEW: argp, GNU ext
1179 argp_help NEW: argp, GNU ext
1180 argp_parse NEW: argp, GNU ext
1181 argp_program_bug_address NEW: argp, GNU ext
1182 argp_program_version NEW: argp, GNU ext
1183 argp_program_version_hook NEW: argp, GNU ext
1184 argp_state_help NEW: argp, GNU ext
1185 argp_usage NEW: argp, GNU ext
1186 authdes_create NEW: Secure RPC
1187 authdes_getucred NEW: Secure RPC
1188 authdes_pk_create NEW: Secure RPC
1189 backtrace NEW: GNU ext.
1190 backtrace_symbols NEW: GNU ext.
1191 backtrace_symbols_fd NEW: GNU ext.
1192 cacos NEW: ISO C 9x
1193 cacosf NEW: ISO C 9x
1194 cacosh NEW: ISO C 9x
1195 cacoshf NEW: ISO C 9x
1196 cacoshl NEW: ISO C 9x
1197 cacosl NEW: ISO C 9x
1198 capget NEW: kernel
1199 capset NEW: kernel
1200 carg NEW: ISO C 9x
1201 cargf NEW: ISO C 9x
1202 cargl NEW: ISO C 9x
1203 casin NEW: ISO C 9x
1204 casinf NEW: ISO C 9x
1205 casinh NEW: ISO C 9x
1206 casinhf NEW: ISO C 9x
1207 casinhl NEW: ISO C 9x
1208 casinl NEW: ISO C 9x
1209 catan NEW: ISO C 9x
1210 catanf NEW: ISO C 9x
1211 catanh NEW: ISO C 9x
1212 catanhf NEW: ISO C 9x
1213 catanhl NEW: ISO C 9x
1214 catanl NEW: ISO C 9x
1215 cbc_crypt NEW: Secure RPC
1216 ccos NEW: ISO C 9x
1217 ccosf NEW: ISO C 9x
1218 ccosh NEW: ISO C 9x
1219 ccoshf NEW: ISO C 9x
1220 ccoshl NEW: ISO C 9x
1221 ccosl NEW: ISO C 9x
1222 cexp NEW: ISO C 9x
1223 cexpf NEW: ISO C 9x
1224 cexpl NEW: ISO C 9x
1225 cimag NEW: ISO C 9x
1226 cimagf NEW: ISO C 9x
1227 cimagl NEW: ISO C 9x
1228 clearerr_locked REMOVED
1229 clntunix_create NEW: sunrpc ext
1230 clog NEW: ISO C 9x
1231 clog10 NEW: ISO C 9x
1232 clog10f NEW: ISO C 9x
1233 clog10l NEW: ISO C 9x
1234 clogf NEW: ISO C 9x
1235 clogl NEW: ISO C 9x
1236 conj NEW: ISO C 9x
1237 conjf NEW: ISO C 9x
1238 conjl NEW: ISO C 9x
1239 cpow NEW: ISO C 9x
1240 cpowf NEW: ISO C 9x
1241 cpowl NEW: ISO C 9x
1242 cproj NEW: ISO C 9x
1243 cprojf NEW: ISO C 9x
1244 cprojl NEW: ISO C 9x
1245 creal NEW: ISO C 9x
1246 crealf NEW: ISO C 9x
1247 creall NEW: ISO C 9x
1248 creat64 NEW: LFS
1249 csin NEW: ISO C 9x
1250 csinf NEW: ISO C 9x
1251 csinh NEW: ISO C 9x
1252 csinhf NEW: ISO C 9x
1253 csinhl NEW: ISO C 9x
1254 csinl NEW: ISO C 9x
1255 csqrt NEW: ISO C 9x
1256 csqrtf NEW: ISO C 9x
1257 csqrtl NEW: ISO C 9x
1258 ctan NEW: ISO C 9x
1259 ctanf NEW: ISO C 9x
1260 ctanh NEW: ISO C 9x
1261 ctanhf NEW: ISO C 9x
1262 ctanhl NEW: ISO C 9x
1263 ctanl NEW: ISO C 9x
1264 des_setparity NEW: Secure RPC
1265 ecb_crypt NEW: Secure RPC
1266 endutxent NEW: Unix98
1267 exp10 NEW: ISO C 9x
1268 exp10f NEW: ISO C 9x
1269 exp10l NEW: ISO C 9x
1270 exp2 NEW: ISO C 9x
1271 exp2f NEW: ISO C 9x
1272 exp2l NEW: ISO C 9x
1273 fattach NEW: STREAMS
1274 fdetach NEW: STREAMS
1275 fdim NEW: ISO C 9x
1276 fdimf NEW: ISO C 9x
1277 fdiml NEW: ISO C 9x
1278 feclearexcept NEW: ISO C 9x
1279 fegetenv NEW: ISO C 9x
1280 fegetexceptflag NEW: ISO C 9x
1281 fegetround NEW: ISO C 9x
1282 feholdexcept NEW: ISO C 9x
1283 feof_locked REMOVED
1284 feraiseexcept NEW: ISO C 9x
1285 ferror_locked REMOVED
1286 fesetenv NEW: ISO C 9x
1287 fesetexceptflag NEW: ISO C 9x
1288 fesetround NEW: ISO C 9x
1289 fetestexcept NEW: ISO C 9x
1290 feupdateenv NEW: ISO C 9x
1291 fflush_locked REMOVED
1292 ffsl NEW: GNU ext.
1293 ffsll NEW: GNU ext.
1294 fgetpos64 NEW: LFS
1295 fgets_unlocked NEW: GNU ext.
1296 fileno_locked REMOVED
1297 fma NEW: ISO C 9x
1298 fmaf NEW: ISO C 9x
1299 fmal NEW: ISO C 9x
1300 fmax NEW: ISO C 9x
1301 fmaxf NEW: ISO C 9x
1302 fmaxl NEW: ISO C 9x
1303 fmin NEW: ISO C 9x
1304 fminf NEW: ISO C 9x
1305 fminl NEW: ISO C 9x
1306 fmtmsg NEW: Unix98
1307 fopen64 NEW: LFS
1308 fputc_locked REMOVED
1309 fputs_unlocked NEW: GNU ext.
1310 fread_unlocked NEW: GNU ext.
1311 freopen64 NEW: LFS
1312 fseeko NEW: Unix98
1313 fsetpos64 NEW: LFS
1314 fstatfs64 NEW: LFS
1315 fstatvfs NEW: Unix98
1316 fstatvfs64 NEW: LFS
1317 ftello NEW: Unix98
1318 ftello64 NEW: LFS
1319 ftruncate64 NEW: LFS
1320 ftw64 NEW: LFS
1321 fwrite_unlocked NEW: GNU ext.
1322 gai_strerror NEW: IPv6
1323 gamma_r REMOVED
1324 gammaf_r REMOVED
1325 gammal_r REMOVED
1326 getchar_locked REMOVED
1327 getdate NEW: Unix98
1328 getdate_err NEW: Unix98
1329 getdate_r NEW: GNU ext.
1330 getmsg NEW: STREAMS
1331 getnameinfo NEW: IPv6
1332 getnetname NEW: Secure RPC
1333 getpmsg NEW: STREAMS
1334 getpt NEW: Unix98 PTY
1335 getrlimit64 NEW: LFS
1336 getutxent NEW: Unix98
1337 getutxid NEW: Unix98
1338 getutxline NEW: Unix98
1339 glob64 NEW: GNU ext.
1340 globfree64 NEW: GNU ext.
1341 gnu_get_libc_release NEW: GNU ext.
1342 gnu_get_libc_version NEW: GNU ext.
1343 grantpt NEW: Unix98 PTY
1344 host2netname NEW: Secure RPC
1345 iconv NEW: iconv
1346 iconv_close NEW: iconv
1347 iconv_open NEW: iconv
1348 if_freenameindex NEW: IPv6
1349 if_indextoname NEW: IPv6
1350 if_nameindex NEW: IPv6
1351 if_nametoindex NEW: IPv6
1352 in6addr_any NEW: IPv6
1353 in6addr_loopback NEW: IPv6
1354 inet6_isipv4mapped NEW: IPv6
1355 isastream NEW: STREAMS
1356 iswblank NEW: GNU ext.
1357 key_decryptsession NEW: Secure RPC
1358 key_decryptsession_pk NEW: Secure RPC
1359 key_encryptsession NEW: Secure RPC
1360 key_encryptsession_pk NEW: Secure RPC
1361 key_gendes NEW: Secure RPC
1362 key_get_conv NEW: Secure RPC
1363 key_secretkey_is_set NEW: Secure RPC
1364 key_setnet NEW: Secure RPC
1365 key_setsecret NEW: Secure RPC
1366 llrint NEW: ISO C 9x
1367 llrintf NEW: ISO C 9x
1368 llrintl NEW: ISO C 9x
1369 llround NEW: ISO C 9x
1370 llroundf NEW: ISO C 9x
1371 llroundl NEW: ISO C 9x
1372 log2 NEW: ISO C 9x
1373 log2f NEW: ISO C 9x
1374 log2l NEW: ISO C 9x
1375 lrint NEW: ISO C 9x
1376 lrintf NEW: ISO C 9x
1377 lrintl NEW: ISO C 9x
1378 lround NEW: ISO C 9x
1379 lroundf NEW: ISO C 9x
1380 lroundl NEW: ISO C 9x
1381 lseek64 NEW: LFS
1382 makecontext NEW: Unix98
1383 mempcpy NEW: GNU ext.
1384 mmap64 NEW: LFS
1385 moncontrol REMOVED
1386 modify_ldt NEW: kernel
1387 nan NEW: ISO C 9x
1388 nanf NEW: ISO C 9x
1389 nanl NEW: ISO C 9x
1390 nearbyint NEW: ISO C 9x
1391 nearbyintf NEW: ISO C 9x
1392 nearbyintl NEW: ISO C 9x
1393 netname2host NEW: Secure RPC
1394 netname2user NEW: Secure RPC
1395 nexttoward NEW: ISO C 9x
1396 nexttowardf NEW: ISO C 9x
1397 nexttowardl NEW: ISO C 9x
1398 nftw NEW: Unix98
1399 nftw64 NEW: LFS
1400 open64 NEW: LFS
1401 passwd2des NEW: Secure RPC
1402 pow10 NEW: GNU ext.
1403 pow10f NEW: GNU ext.
1404 pow10l NEW: GNU ext.
1405 pread NEW: Unix98
1406 pread64 NEW: LFS
1407 printf_size NEW: GNU ext.
1408 printf_size_info NEW: GNU ext.
1409 profil_counter REMOVED
1410 pthread_mutexattr_getkind_np REPLACED
1411 pthread_mutexattr_setkind_np REPLACED
1412 ptsname NEW: Unix98 PTY
1413 ptsname_r NEW: Unix98 PTY
1414 putc_locked REMOVED
1415 putchar_locked REMOVED
1416 putgrent NEW: GNU ext.
1417 putmsg NEW: STREAMS
1418 putpmsg NEW: STREAMS
1419 pututxline NEW: Unix98
1420 pwrite NEW: Unix98
1421 pwrite64 NEW: LFS
1422 readdir64 NEW: LFS
1423 readdir64_r NEW: LFS
1424 remquo NEW: ISO C 9x
1425 remquof NEW: ISO C 9x
1426 remquol NEW: ISO C 9x
1427 round NEW: ISO C 9x
1428 roundf NEW: ISO C 9x
1429 roundl NEW: ISO C 9x
1430 rtime NEW: GNU ext.
1431 scalbln NEW: ISO C 9x
1432 scalblnf NEW: ISO C 9x
1433 scalblnl NEW: ISO C 9x
1434 scandir64 NEW: LFS
1435 sendfile NEW: kernel
1436 setcontext NEW: Unix98
1437 setrlimit64 NEW: LFS
1438 setutxent NEW: Unix98
1439 sighold NEW: Unix98
1440 sigignore NEW: Unix98
1441 sigqueue NEW: POSIX.1b
1442 sigrelse NEW: Unix98
1443 sigset NEW: POSIX.1b
1444 sigtimedwait NEW: POSIX.1b
1445 sigwaitinfo NEW: POSIX.1b
1446 sincos NEW: GNU ext.
1447 sincosf NEW: GNU ext.
1448 sincosl NEW: GNU ext.
1449 statfs64 NEW: LFS
1450 statvfs NEW: Unix98
1451 statvfs64 NEW: LFS
1452 strcasestr NEW: GNU ext.
1453 strtoimax NEW: ISO C 9x
1454 strtoumax NEW: ISO C 9x
1455 strverscmp NEW: GNU ext.
1456 svcauthdes_stats NEW: Secure RPC
1457 svcunix_create NEW: sunrpc etx
1458 svcunixfd_create NEW: sunrpc ext
1459 swapcontext NEW: Unix98
1460 tcgetsid NEW: Unix98 PTY
1461 tdestroy NEW: GNU ext.
1462 tgamma NEW: ISO C 9x
1463 tgammaf NEW: ISO C 9x
1464 tgammal NEW: ISO C 9x
1465 tmpfile64 NEW: LFS
1466 trunc NEW: ISO C 9x
1467 truncate64 NEW: LFS
1468 truncf NEW: ISO C 9x
1469 truncl NEW: ISO C 9x
1470 umount2 NEW: kernel
1471 unlockpt NEW: Unix98 PTY
1472 updwtmpx NEW: Unix98
1473 user2netname NEW: Secure RPC
1474 utmpxname NEW: Unix98
1475 versionsort NEW: GNU ext.
1476 versionsort64 NEW: GNU ext.
1477 waitid NEW: Unix98
1478 wcscasecmp NEW: GNU ext.
1479 wcsncasecmp NEW: GNU ext.
1480 wcsnlen NEW: GNU ext.
1481 wcstoimax NEW: ISO C 9x
1482 wcstoll NEW: ISO C 9x
1483 wcstoull NEW: ISO C 9x
1484 wcstoumax NEW: ISO C 9x
1485 wcswcs NEW: Unix98
1486 wordexp NEW: POSIX.2
1487 wordfree NEW: POSIX.2
1488 write_profiling REMOVED
1489 xdecrypt NEW: Secure RPC
1490 xdr_authdes_cred NEW: Secure RPC
1491 xdr_authdes_verf NEW: Secure RPC
1492 xdr_cryptkeyarg NEW: Secure RPC
1493 xdr_cryptkeyarg2 NEW: Secure RPC
1494 xdr_cryptkeyres NEW: Secure RPC
1495 xdr_getcredres NEW: Secure RPC
1496 xdr_key_netstarg NEW: Secure RPC
1497 xdr_key_netstres NEW: Secure RPC
1498 xdr_keybuf NEW: Secure RPC
1499 xdr_keystatus NEW: Secure RPC
1500 xdr_netnamestr NEW: Secure RPC
1501 xdr_sizeof NEW: Secure RPC
1502 xdr_unixcred NEW: sunrpc ext
1503 xencrypt NEW: Secure RPC
1504 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1505 \f
1506 Version 2.0.6
1508 * more bug fixes
1510 \f
1511 Version 2.0.5
1513 * more bug fixes
1515 * inet_ntoa is thread-safe
1517 * updwtmp is moved from libutil to libc
1519 * rewrite of cbrt function
1521 * update of timezone data
1522 \f
1523 Version 2.0.4
1525 * more bug fixes
1526 \f
1527 Version 2.0.3
1529 * more bug fixes
1530 \f
1531 Version 2.0.2
1533 * more bug fixes
1535 * add atoll function
1537 * fix complex problems in Berkeley DB code
1539 * fix math functions
1540 \f
1541 Version 2.0.1
1543 * fixed lots of header problems (especially Linux/GNU specific)
1545 * dynamic loader preserves all registers
1547 * Roland McGrath provided support for handling of auxiliary objects in
1548 the ELF dynamic loader.
1550 * support for parallel builds is improved
1551 \f
1552 Version 2.0
1554 * GNU extensions are no longer declared by default. To enable them you
1555 must define the macro `_GNU_SOURCE' in your program or compile with
1556 `-D_GNU_SOURCE'.
1558 * The library has changed from using GNU ld symbol aliases to using weak
1559 symbols where available. The ELF object file format supports weak
1560 symbols; GNU ld also supports weak symbols in the a.out format. (There
1561 is also now support for other GNU ld extensions in ELF. Use the
1562 `--with-elf' option to configure to indicate you have ELF, and
1563 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1564 of many files which contained only symbol aliases, reducing the size of
1565 the source and the compiled library; many other files were renamed to
1566 less cryptic names previously occupied by the symbol alias files.
1567 There is a new header file <elf.h> for programs which operate on
1568 files in the ELF format.
1570 * Converted to Autoconf version 2, so `configure' has more options.
1571 Run `configure --help' to see the details.
1573 * The library can now be configured to build profiling, highly-optimized
1574 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1575 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1576 `configure' enable building these extra libraries. The shared library is
1577 built by default when using both ELF and GNU ld. When shared libraries
1578 are enabled, the new library `-ldl' is available for arbitrary run-time
1579 loading of shared objects; its interface is defined in <dlfcn.h>. The
1580 new header file <link.h> gives access to the internals of the run-time
1581 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1582 application of same name on other systems and it provides information
1583 about dynamically linked binaries.
1585 * The C library now provides the run-time support code for profiling
1586 executables compiled with `-pg'. Programs can control the profiling code
1587 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1588 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1589 the support for this file format was contributed by David Mosberger-Tang.
1591 * The math code has been replaced with a math library based on fdlibm from
1592 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1593 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1594 functions. The math functions now reside in a separate library, so
1595 programs using them will need to use `-lm' their linking commands.
1597 * John C. Bowman contributed optimized ix87 assembler inline functions.
1599 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1600 mechanism similar to that found in Solaris 2. This is now used for the
1601 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1602 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1603 file controls what services are used for each individual database. This
1604 works by loading shared libraries with names specified in `nsswitch.conf',
1605 so service modules can be changed or added at any time without even
1606 relinking any program. Currently there are the file, db, and NIS based
1607 NSS services available.
1609 * The new functions `strtoq' and `strtouq' parse integer values from
1610 strings, like `strtol' and `strtoul', but they return `long long int' and
1611 `unsigned long long int' values, respectively (64-bit quantities).
1613 * The new functions `strtof' and `strtold' parse floating-point values from
1614 strings, like `strtod', but they return `float' and `long double' values,
1615 respectively (on some machines `double' and `long double' are the same).
1617 * Ulrich Drepper has contributed new implementations of the floating-point
1618 printing and reading code used in the `printf' family of functions and
1619 `strtod', `strtof', and `strtold'. These new functions are perfectly
1620 accurate, and much faster than the old ones.
1622 * The implementation of the POSIX locale model was completely rewritten by
1623 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1624 to compile the POSIX locale definition.
1626 * The former dummy implementations of the strcoll and strxfrm function are
1627 now replaced by fully functional code contributed by Ulrich Drepper. The
1628 collation information comes from the POSIX locale definitions.
1630 * The new header <langinfo.h> defines an interface for accessing
1631 various locale-dependent data (using the locale chosen with `setlocale').
1633 * Ulrich Drepper has contributed a new suite of functions for operation on
1634 wide-character and multibyte-character strings, in <wchar.h>;
1635 and classification and case conversion of wide characters, in <wctype.h>.
1636 These new functions are conforming to the ISO C, Amendement 1 specification.
1638 * There is now a second implementation of the standard I/O library available.
1639 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1640 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1642 * You can now use positional parameter specifications in format strings
1643 for the `printf' and `scanf' families of functions. For example,
1644 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1645 ``Number 6, Mr Jones''. This is mainly useful when providing different
1646 format strings for different languages, whose grammars may dictate
1647 different orderings of the values being printed. To support this
1648 feature, the interface for `register_printf_handler' has changed; see
1649 the header file <printf.h> for details.
1651 * The `printf' and `scanf' families of functions now understand a new
1652 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1653 to group numbers as indicated by the locale; for `scanf' and friends, this
1654 says to accept as valid only a number with all the proper grouping
1655 separators in the right places. In the default "C" locale, numbers are
1656 not grouped; but locales for specific countries will define the usual
1657 conventions (i.e. separate thousands with `,' in the US locale).
1659 * The pgrp functions have been regularized, slightly incompatibly but much
1660 less confusingly. The core functions are now `getpgid' and `setpgid',
1661 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1662 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1663 provided for compatibility. There is no longer an incompatible `getpgrp'
1664 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1666 * The new header file <fts.h> and suite of functions simplify programs that
1667 operate on directory trees. This code comes from 4.4 BSD.
1669 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1670 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1671 NSS scheme used in glibc.
1673 * There is a new malloc debugging hook `__memalign_hook'.
1675 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1676 `unsigned int' in <sys/types.h>. These are for compatibility only and
1677 their use is discouraged.
1679 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1680 done differently, so that it works even without GNU ld.
1682 * New function `euidaccess' checks allowed access to a file like `access',
1683 but using the effective IDs instead of the real IDs.
1685 * The time zone data files have been updated for the latest and greatest
1686 local time conventions of the countries of the world.
1688 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1689 see <dirent.h>.
1691 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1692 for formatting floating-point numbers. They are provided only for
1693 compatibility; new programs should use `sprintf' instead. There are
1694 also equivalent function for the `long double' floating-point type and
1695 all functions also exist in a reentrant form.
1697 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1698 functions for maintaining the login-record files (primarily of use to
1699 system programs such as `login'), and convenient functions for
1700 allocating and initializing a pseudo-terminal (pty) device.
1702 * Ulrich Drepper has contributed new support for System V style
1703 shared memory and IPC on systems that support it.
1705 * Ulrich Drepper has contributed several miscellaneous new functions found
1706 in System V: The `hsearch' family of functions provide an effective
1707 implementation of hash tables; `a64l' and `l64a' provide a very simple
1708 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1709 number generator.
1711 * Ulrich Drepper has contributed new reentrant counterparts for the
1712 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1714 * Ulrich Drepper has contributed new, highly-optimized versions of several
1715 string functions for the i486/Pentium family of processors.
1717 * Ulrich Drepper has updated the Linux-specific code, based largely
1718 on work done in Hongjiu Lu's version of GNU libc for Linux.
1719 The GNU library now supports Linux versions 2.0.10 and later,
1720 using the ELF object file format (i[3456]86-*-linux).
1722 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1724 * David Mosberger-Tang and Richard Henderson have ported the C library
1725 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1726 dynamic linking support for ELF/Alpha.
1728 * Richard Henderson contributed several Alpha optimized assembler function
1729 for arithmetic and string handling.
1731 * Ulrich Drepper has contributed a new set of message catalog functions to
1732 support multiple languages using the <libintl.h> interface, for use with
1733 his new package GNU gettext. Translation volunteers have contributed
1734 catalogs of the library's messages in Spanish, German, and Korean.
1736 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1737 program and the `catgets' function for reading the catalog files it
1738 creates. (The <libintl.h> interface is preferred; we include the
1739 <nl_types.h> interface using `catgets' only for source compatibility with
1740 programs already written to use it.)
1742 * New header file <values.h> gives SVID-compatible names for <limits.h>
1743 constants.
1745 * Various new macros, declarations, and small header files for compatibility
1746 with 4.4 BSD.
1748 * New function `group_member' is a convenient way to check if a process has
1749 a given effective group ID.
1751 * When using GCC 2.7 and later, the socket functions are now declared in a
1752 special way so that passing an argument of type `struct sockaddr_in *',
1753 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1754 `struct sockaddr *' type, does not generate a type-clash warning.
1756 * New function `error' declared in header file <error.h> is a convenient
1757 function for printing error messages and optionally exiting; this is the
1758 canonical function used in GNU programs. The new functions `err', `warn',
1759 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1760 doing the same thing.
1762 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1763 POSIX.2 `glob' function to do ~ and {...} expansion.
1765 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1766 `clearenv' which is used in POSIX.9 is also available.
1768 * New function `getsid' returns session ID number on systems that support it.
1770 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1771 files <db.h> and <mpool.h> provide a rich set of functions for several
1772 types of simple databases stored in memory and in files, and <ndbm.h> is
1773 an old `ndbm'-compatible interface using the `db' functions. Link with
1774 `-ldb' to get these functions.
1776 * New macro `strdupa' copies a string like `strdup', but uses local stack
1777 space from `alloca' instead of dynamic heap space from `malloc'.
1779 * New function `strnlen' is like `strlen' but searches only a given maximum
1780 number of characters for the null terminator. `stpncpy', `strndup' and
1781 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1782 function.
1784 * New function `statfs' in header <sys/statfs.h>.
1786 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1787 provide convenient functions for operating on blocks of null-terminated
1788 strings.
1790 * A new suite of functions in <utmp.h> handle all the details of reading
1791 and writing the utmp file.
1793 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1794 Thorsten Kukuk.
1796 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1797 completely POSIX compliant and also implemented the extended functionality
1798 to handle alternate digit representation and alternate era date formats.
1800 * Ulrich Drepper provided an implementation of the `strptime' function
1801 defined in XPG4.2 which transforms a string into a `struct tm' value.
1803 * Paul Eggert provided the tzselect shell script as part of the timezone
1804 code. The shell script makes it easy to select the correct timezone
1805 specification.
1807 * The implementation of the malloc family of functions is completely replaced
1808 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1809 The implementation uses the mmap function (if available) and it is
1810 optimized for the use in multi threaded programs.
1812 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1813 functions. This new functionality is usable by specifying a special
1814 salt string and it is compatible with implementation on *BSD systems.
1816 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1817 `getsubopt' to handle second level command line options, `bsd_signal'
1818 to access BSD style `signal' functionality, the obsolete `regexp' style
1819 expression matcher.
1821 * the `lchown' function is available on system which support this
1822 functionality.
1824 * The implementation of the shadow password handling function was contributed
1825 by Ulrich Drepper.
1827 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1829 * POSIX.1g support was added. The <sys/select.h> header is available,
1830 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1831 implementation of `getaddrinfo'.
1832 \f
1833 Version 1.09
1835 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1837 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1838 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1840 * The new function `daemon' from 4.4 BSD is useful for server programs that
1841 want to put themselves in the background.
1843 * Joel Sherrill has contributed support for several standalone boards that
1844 run without an operating system.
1846 * `printf', `scanf' and friends now accept a `q' type modifier for long
1847 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1849 * All of the code taken from BSD (notably most of the math and networking
1850 routines) has been updated from the BSD 4.4-Lite release.
1852 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1854 * The new functions `getdomainname' and `setdomainname' fetch or change the
1855 YP/NIS domain name. These are system calls which exist on systems which
1856 have YP (aka NIS).
1858 * The time zone data files have been updated for the latest international
1859 conventions.
1861 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1862 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1863 \f
1864 Version 1.08
1866 * The C library now includes support for Sun RPC, from Sun's free
1867 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1868 are included. (There is still no support for YP.)
1870 * Tom Quinn has contributed a port of the C library to SGI machines running
1871 Irix 4 (mips-sgi-irix4).
1873 * The new `lockf' function is a simplified interface to the locking
1874 facilities of `fcntl', included for compatibility.
1876 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1878 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1880 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1881 compatibility.
1883 * The error message printed by `assert' for a failed assertion now includes
1884 the name of the program (if using GNU ld) and the name of the calling
1885 function (with versions of GCC that support this).
1887 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1889 * The library now includes the <sys/mman.h> header file and memory
1890 management functions `mmap', `munmap', `mprotect', `msync', and
1891 `madvise', on systems that support those facilities.
1893 * The interface for `mcheck' has changed slightly: the function called to
1894 abort the program when an allocation inconsistency is detected now takes
1895 an argument that indicates the type of failure. The new function
1896 `mprobe' lets you request a consistency check for a particular block at
1897 any time (checks are normally done only when you call `free' or `realloc'
1898 on a block).
1900 * It is now possible to easily cross-compile the C library, building on one
1901 system a library to run on another machine and/or operating system. All
1902 you need to do is set the variable `HOST_CC' in `configparms' to the
1903 native compiler for programs to run on the machine you are building on (a
1904 few generator programs are used on Unix systems); set `CC' to the
1905 cross-compiler.
1907 * The new function `fexecve' (only implemented on the GNU system) executes
1908 a program file given a file descriptor already open on the file.
1909 \f
1910 Version 1.07
1912 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1913 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1915 * You can set the variable `libprefix' in `configparms' to specify a prefix
1916 to be prepended to installed library files; this makes it easy to install
1917 the GNU C library to be linked as `-lgnuc' or whatever.
1919 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1920 copies a limited number of characters from a string, and returns the
1921 address of the last character written.
1923 * You no longer need to check for whether the installed `stddef.h' is
1924 compatible with the GNU C library. configure now checks for you.
1926 * You can now define a per-stream `fileno' function to convert the
1927 stream's cookie into an integral file descriptor.
1929 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1930 allocates zero bytes of storage, and returns a unique pointer which
1931 you can pass to `realloc' or `free'. The behavior is undefined if
1932 you dereference this pointer.
1934 * The C library now runs on Sony NEWS m68k machines running either
1935 NewsOS 3 or NewsOS 4.
1937 * The new `syscall' function is a system-dependent primitive function
1938 for invoking system calls. It has the canonical behavior on Unix
1939 systems, including unreliable return values for some calls (such as
1940 `pipe', `fork' and `getppid').
1942 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1943 to `EAGAIN', which is the preferred name. On systems whose kernels
1944 use two distinct codes, the C library now translates EWOULDBLOCK to
1945 EAGAIN in every system call function.
1946 \f
1947 Version 1.06
1949 * The GNU C Library Reference Manual is now distributed with the library.
1950 `make dvi' will produce a DVI file of the printed manual.
1951 `make info' will produce Info files that you can read on line using C-h i
1952 in Emacs or the `info' program.
1953 Please send comments on the manual to bug-glibc-manual@gnu.org.
1955 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1957 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1959 * Jason Merrill has contributed a port to the Sequent Symmetry running
1960 Dynix version 3 (i386-sequent-dynix).
1962 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1963 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1965 * New function `memory_warnings' lets you arrange to get warnings when
1966 malloc is running out of memory to allocate, like Emacs gives you.
1968 * The C library now contains the relocating allocator used in Emacs 19 for
1969 its editing buffers. This allocator (ralloc) minimizes allocation
1970 overhead and fragmentation by moving allocated regions around whenever it
1971 needs to. You always refer to a ralloc'd region with a "handle" (a
1972 pointer to a pointer--an object of type `void **').
1974 * There is a new `printf' format: `%m' gives you the string corresponding
1975 to the error code in `errno'.
1977 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1978 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1979 pass, the `a' modifier says to fill in a `char **' you pass with a
1980 malloc'd string.
1982 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1983 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1984 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1986 * `mkstemp' is a traditional Unix function to atomically create and open a
1987 uniquely-named temporary file.
1988 \f
1989 Version 1.05
1991 * The standard location for the file that says what the local timezone is
1992 has changed again. It is now `/usr/local/etc/localtime' (or more
1993 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1995 * The distribution no longer contains any files with names longer than 14
1996 characters.
1998 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1999 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2001 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2002 \f
2003 Version 1.04
2005 * The configuration process has changed quite a bit. The `configure'
2006 script is now used just like the configuration scripts for other GNU
2007 packages. The `sysdeps' directory hierarchy is much rearranged.
2008 The file `INSTALL' explains the new scheme in detail.
2010 * The header files no longer need to be processed into ANSI C and
2011 traditional C versions. There is just one set of files to install, and
2012 it will work with ANSI or old C compilers (including `gcc -traditional').
2014 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2015 MIPS DECStation running Ultrix 4.
2017 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2018 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2019 made itself into a shared library.
2021 * Yet further improved support for the i386, running 4.3 BSD-like systems
2022 (such as Mach 3 with the Unix single-server), or System V.
2024 * New function `strncasecmp' to do case-insensitive string comparison
2025 with limited length.
2027 * New function `strsep' is a reentrant alternative to `strtok'.
2029 * New functions `scandir' and `alphasort' for searching directories.
2031 * New function `setenv' is a better interface to `putenv'.
2033 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2034 function for traversing a directory tree.
2036 * The GNU obstack package is now also part of the C library.
2037 The new function `open_obstack_stream' creates a stdio stream that
2038 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2039 formatted output directly to an obstack.
2041 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2042 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2044 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2046 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2047 things to your strings.
2049 * There are some new test programs: test-fseek, testmb, and testrand.
2051 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2052 These ports are not finished, but are a good starting place for really
2053 supporting those systems.
2055 * `/etc/localtime' is now the standard location for the file that says what
2056 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2057 This follows the general principle that `/etc' is the place for all local
2058 configuration files.
2060 * The C library header files now use `extern "C"' when used by the C++
2061 compiler, so the C library should now work with C++ code.
2063 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2064 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2065 in <strings.h>.)
2067 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2068 function which uses the `merge sort' algorithm, and is said to be
2069 significantly faster than the old GNU `qsort' function. Merge sort is
2070 now the standard `qsort' function. The new algorithm can require a lot
2071 of temporary storage; so, the old sorting function is called when the
2072 required storage is not available.
2074 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2075 provides the Unix `crypt' function, plus some other entry points.
2077 * The code and header files taken from 4.4 BSD have been updated with the
2078 latest files released from Berkeley.
2079 \f
2080 ----------------------------------------------------------------------
2081 Copyright information:
2083 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2085 Permission is granted to anyone to make or distribute verbatim copies
2086 of this document as received, in any medium, provided that the
2087 copyright notice and this permission notice are preserved,
2088 thus giving the recipient permission to redistribute in turn.
2090 Permission is granted to distribute modified versions
2091 of this document, or of portions of it,
2092 under the above conditions, provided also that they
2093 carry prominent notices stating who last changed them.
2094 \f
2095 Local variables:
2096 version-control: never
2097 fill-column: 76
2098 End: