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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, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
13 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
14 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
15 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
16 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
17 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
18 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
19 12193, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058, 13361,
20 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532, 13533, 13547,
21 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566, 13576, 13583,
22 13592, 13594, 13613, 13618, 13637, 13656, 13658, 13673, 13691, 13695,
23 13704, 13705, 13706, 13726, 13738, 13739, 13750, 13758, 13760, 13761,
24 13775, 13786, 13787, 13792, 13806, 13824, 13840, 13841, 13844, 13846,
25 13851, 13852, 13854, 13871, 13872, 13873, 13879, 13883, 13884, 13885,
26 13886, 13892, 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915,
27 13916, 13917, 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926,
28 13927, 13928, 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967,
29 13968, 13970, 13973, 13979, 13983, 13986, 14012, 14027, 14033, 14034,
30 14036, 14040, 14043, 14044, 14049, 14053, 14055, 14059, 14064, 14080,
31 14083, 14103, 14104, 14109, 14122, 14123, 14153
33 * ISO C11 support:
35 + define static_assert
37 + do not declare gets
39 + declare at_quick_exit and quick_exit also for ISO C11
41 + aligned_alloc. NB: The code is deliberately allows the size parameter
42 to not be a multiple of the alignment. This is a moronic requirement
43 in the standard but it is only a requirement on the caller, not the
44 implementation.
46 + timespec_get added
48 + uchar.h support added
50 + CMPLX, CMPLXF, CMPLXL added
52 Implemented by Ulrich Drepper.
54 * Support for the IA-64 has been moved to ports.
56 * Remove support for anything but ELF binary format
58 * Checking versions of poll, ppoll added.
59 Implemented by Ulrich Drepper.
61 * More generic and 64-bit performance optimizations to math functions.
62 Implemented by Ulrich Drepper.
64 * New configure option --enable-obsolete-rpc makes the deprecated RPC
65 headers and functions available at compile time as they were before
66 version 2.14. This option will be removed at some time in the future
67 after the TI-RPC library becomes fully sufficient for the needs of
68 existing applications.
70 * Compatibility code for Linux kernel versions before 2.4 has been removed.
71 Note that glibc is not expected to work with any Linux kernel version
72 before 2.6.
74 * New header <sys/auxv.h> and function getauxval allowing easy access to
75 the AT_* key-value pairs passed from the Linux kernel. The header also
76 defines the HWCAP_* bits associated with the AT_HWCAP key.
78 * New locales: mag_IN
80 * New configure option --enable-systemtap builds SystemTap static probes
81 into libc for setjmp and longjmp and into libpthread for various operations.
82 So far the setjmp/longjmp probes and some of the libpthread probes are
83 provided only for i*86 and x86_64.
84 Implemented by Roland McGrath and Rayson Ho.
86 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
88 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella.
90 * More optimized functions for SPARC. Implemented by David S. Miller.
92 * Improved support for cross-compilation, especially bootstrap builds
93 without a previously built glibc.
95 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
96 Chris Metcalf from Tilera.
98 * Support for the old ARM ABI has been removed from ports. Only the EABI is
99 now supported for ARM processors.
101 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
102 as the name of the dynamic linker, to distinguish it from the
103 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
105 * Support for CRIS has been removed from ports.
106 \f
107 Version 2.15
109 * The following bugs are resolved with this release:
111 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
112 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
113 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
114 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
115 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
116 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
117 13484, 13506, 13515, 13523, 13524, 13538, 13540
119 * New program pldd to list loaded object of a process
120 Implemented by Ulrich Drepper.
122 * Add nss_db support back to glibc. No more dependency on Berkeley db
123 and support for initgroups lookups.
124 Implemented by Ulrich Drepper.
126 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
127 Contributed by HJ Lu.
129 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
130 Contributed by HJ Lu.
132 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
133 on x86-32 and x86-64.
134 Contributed by Liubov Dmitrieva.
136 * Optimized strchr and strrchr for SSE on x86-32.
137 Contributed by Liubov Dmitrieva.
139 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
140 for x86-64 and x86-32.
141 Contributed by Liubov Dmitrieva.
143 * New interfaces: scandirat, scandirat64
144 Implemented by Ulrich Drepper.
146 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
147 Implemented by Ulrich Drepper.
149 * nscd now also caches the netgroup database.
150 Implemented by Ulrich Drepper.
152 * Integrate libm with gcc's -ffinite-math-only option.
153 Implemented by Ulrich Drepper.
155 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
156 to math functions. Implemented by Ulrich Drepper.
158 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
159 Implemented by Ulrich Drepper.
161 * New Linux interfaces: process_vm_readv, process_vm_writev
163 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
164 Implemented by Ulrich Drepper.
166 * Optimized nearbyint and strcasecmp for PPC.
167 Implemented by Adhemerval Zanella.
169 * New locales: bho_IN, unm_US, es_CU, ta_LK
170 \f
171 Version 2.14
173 * The following bugs are resolved with this release:
175 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
176 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
177 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
178 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
179 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
180 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
181 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
182 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
183 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
184 12795, 12811, 12813, 12814, 12841
186 * The RPC implementation in libc is obsoleted. Old programs keep working
187 but new programs cannot be linked with the routines in libc anymore.
188 Programs in need of RPC functionality must be linked against TI-RPC.
189 The TI-RPC implementation is IPv6 enabled and there are other benefits.
191 Visible changes of this change include (obviously) the inability to link
192 programs using RPC functions without referencing the TI-RPC library and the
193 removal of the RPC headers from the glibc headers.
194 Implemented by Ulrich Drepper.
196 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
197 syncfs, setns, sendmmsg
199 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
200 yue_HK, lij_IT, mhr_RU
202 * New encodings: CP770, CP771, CP772, CP773, CP774
204 * New program sotruss to trace calls through PLTs
205 Implemented by Ulrich Drepper.
207 * The malloc hook implementation is marked deprecated and will be removed
208 from the default implementation in the next version. The design never
209 worked ever since the introduction of threads. Even programs which do
210 not create threads themselves can use multiple threads created internally.
211 \f
212 Version 2.13
214 * The following bugs are resolved with this release:
216 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
217 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
218 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
219 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
220 12378, 12394, 12397
222 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
224 * POWER7 optimizations: memset, memcmp, strncmp
226 * New optimized string functions for x86-64: strnlen (SSE2),
227 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
228 Implemented by Ulrich Drepper.
229 \f
230 Version 2.12
232 * The following bugs are resolved with this release:
234 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
235 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
236 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
237 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
238 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
239 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
240 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
241 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
243 * New interfaces: pthread_getname_np, pthread_setname_np
245 * New Linux interface: recvmmsg
247 * STT_GNU_IFUNC implemented for Sparc by David Miller.
249 * The dynamic linker now recognizes supported ABI versions from the
250 EI_ABIVERSION field in the ELF header.
251 Implemented by Ulrich Drepper.
253 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
254 will not be used to fill in password fields in the passwd.byname replies.
255 Instead it is used to synthesize the shadow.byname table, should it be
256 missing. This is a useful mode in some installations involving Solaris.
257 Implemented by Ulrich Drepper.
259 * New locales: kok_IN, sq_MK, cv_RU
260 \f
261 Version 2.11
263 * The following bugs are resolved with this release:
265 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
266 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
267 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
268 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
269 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
270 10789, 10817, 10823, 10840, 10847
272 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
273 mkostemps64
274 Implemented by Ulrich Drepper.
276 * Checking version of longjmp added that fails if an uninitialized stack
277 frame would be created. Implemented by Ulrich Drepper.
279 * STT_GNU_IFUNC is now supported in static executables.
280 Implemented by H.J. Lu.
282 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
284 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
285 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
286 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
287 Contributed by H.J. Lu.
289 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
290 Implemented by Ulrich Drepper.
292 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
293 strstr, strcasestr.
294 Contributed by H.J. Lu.
296 * Support for fma instruction in AVX on x86-64.
297 Implemented by H.J. Lu and Ulrich Drepper.
299 * AVX support in x86-64 auditing support in ld.so.
300 Implemented by H.J. Lu.
302 * STB_GNU_UNIQUE support added.
303 Implemented by Ulrich Drepper.
305 * Implement second fallback mode for optimized DNS lookup for even more
306 broken environments. If two requests from the same port are not
307 handled correctly close the socket and open a new one before sending
308 the second request. The 'single-request-reopen' option in /etc/resolv.conf
309 can be used to select this mode right away, instead of rediscovering the
310 necessity is every process again.
311 Implemented by Ulrich Drepper.
313 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
314 Implemented by Adam Tkac.
316 * Optimized iconv conversions for S390x.
317 Implemented by Andreas Krebbel.
319 * Using condvars with PI mutexes is now more efficient due to kernel
320 support for requeueing to PI futexes. NPTL support added for x86-64.
321 Implemented by Ulrich Drepper.
323 * New locales: ps_AF, my_MM
324 \f
325 Version 2.10
327 * The following bugs are resolved with this release:
329 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
330 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
331 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
332 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
333 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
335 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
336 Implemented by Ulrich Drepper.
338 * New Linux interfaces: accept4, fallocate, fallocate64.
339 Implemented by Ulrich Drepper.
341 * Correct declarations of string function when used in C++ code. This
342 could lead to compile errors for invalid C++ code.
344 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
345 now in POSIX.
347 * New POSIX 2008 interface: psiginfo
348 Implemented by Ulrich Drepper.
350 * New ISO C++1x interfaces: quick_exit, at_quick_exit
351 Implemented by Ulrich Drepper.
353 * Support for selecting between multiple function definitions at runtime
354 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
356 * The libcrypt library can now use the hash function implementations in
357 NSS. Implemented by Ulrich Drepper.
359 * The malloc implementation can be compiled to be less memory efficient
360 but higher performing in multi-threaded programs.
361 Implemented by Ulrich Drepper.
363 * New locales: nan_TW@latin, ks_IN
365 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
366 Implemented by Ulrich Drepper.
368 * Extended printf hook support. It is possible to use user-defined types
369 and extend existing format specifiers.
370 Implemented by Ulrich Drepper.
372 * Handling for group shadow files has been added.
373 Implemented by Ulrich Drepper.
375 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
376 servers (the case, e.g., for some people using the built-in DNS
377 server in ADSL modems/routers). There is a once-per-process timeout
378 in case of a broken server. To avoid it, users can run nscd or put
379 'options single-request' in /etc/resolv.conf.
380 Implemented by Ulrich Drepper.
381 \f
382 Version 2.9
384 * The following bugs are resolved with this release:
386 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
387 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
388 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
389 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
390 6968, 6974, 6980, 6995, 7008, 7009, 7029
392 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
393 up at the same time. Implemented by Ulrich Drepper.
395 * TLS descriptors for LD and GD on x86 and x86-64.
396 Implemented by Alexandre Oliva.
398 * getaddrinfo now handles DCCP and UDPlite.
399 Implemented by Ulrich Drepper.
401 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
402 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
403 Implemented by Ulrich Drepper.
405 * New implementation of memmem, strstr, and strcasestr which is O(n).
406 Implemented by Eric Blake.
408 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
410 * Implement "e" option for popen to open file descriptor with the
411 close-on-exec flag set. Implemented by Ulrich Drepper.
413 * Implement "b" mode for fmemopen. In this mode writes writes don't
414 implicitly add a NUL byte and seeks from the end of the buffer really
415 use the buffer end, not the string length as the basis.
416 Implemented by Ulrich Drepper.
418 * Many functions, exported and internal, now atomically set the close-on-exec
419 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
421 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
422 Sinhala)
423 Implemented by Pravin Satpute.
425 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
426 \f
427 Version 2.8
429 * The following bugs are resolved with this release:
431 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
432 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
433 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
434 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
435 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
436 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
437 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
439 * New locales: bo_CN, bo_IN, shs_CA.
441 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
443 * Sorting rules for some Indian languages (Devanagari and Gujarati).
444 Implemented by Pravin Satpute.
446 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
448 * nscd caches now all timeouts for DNS entries
449 Implemented by Ulrich Drepper.
451 * nscd is more efficient and wakes up less often.
452 Implemented by Ulrich Drepper.
454 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
455 vdprintf, and obstack_vprintf.
456 Implemented by Jakub Jelinek.
458 * Faster memset for x86-64.
459 Implemented by Harsha Jagasia and H.J. Lu.
461 * Faster memcpy on x86.
462 Implemented by Ulrich Drepper.
464 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
465 Implemented by Ulrich Drepper.
467 * Faster sqrt and sqrtf implemention for some PPC variants.
468 Implemented by Steven Munroe.
469 \f
470 Version 2.7
472 * The following bugs are resolved with this release:
474 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
475 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
476 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
477 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
478 5071, 5103, 5104, 5112, 5113, 5184, 5186
480 * More checking functions: fread, fread_unlocked, open*, mq_open.
481 Implemented by Jakub Jelinek and Ulrich Drepper.
483 * Extend fortification to C++. Implemented by Jakub Jelinek.
485 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
486 by not recognizing 'a' as a modifier when those specs are requested.
487 Implemented by Jakub Jelinek.
489 * PPC optimizations to math and string functions.
490 Implemented by Steven Munroe.
492 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
493 options to be passed. Implemented by Ulrich Drepper.
495 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
497 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
498 Implemented by Ulrich Drepper.
500 * Handle private futexes in the NPTL implementation.
501 Implemented by Jakub Jelinek and Ulrich Drepper.
503 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
504 Implemented by Roland McGrath and Ulrich Drepper.
506 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
508 * SHA-256 and SHA-512 based password encryption.
509 Implemented by Ulrich Drepper.
511 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
512 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
513 yo_NG.
515 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
516 Implemented by Ulrich Drepper.
517 \f
518 Version 2.6
520 * The following bugs are resolved with this release:
522 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
523 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
524 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
525 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
526 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
527 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
528 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
529 4702, 4858
531 * New Linux interfaces: epoll_pwait, sched_getcpu.
533 * New generic interfaces: strerror_l.
535 * nscd can now cache the services database. Implemented by Ulrich Drepper.
536 \f
537 Version 2.5
539 * The following bugs are resolved with this release:
541 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
542 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
543 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
544 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
545 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
546 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
547 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
548 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
549 3225, 3251, 3252, 3253, 3273
551 * For Linux, the sorting of addresses returned by getaddrinfo now also
552 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
553 Implemented by Ulrich Drepper.
555 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
556 Implemented by Ulrich Drepper.
558 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
560 * New iconv module for MIK. Contributed by Alexander Shopov.
562 * For sites with broken group and/or passwd database, the auto-propagate
563 option of nscd can prevent creating ID lookup entries from the results
564 of a name lookup and vice versa. This usually is no problem but some
565 site might have problems with the default behavior.
566 Implemented by Ulrich Drepper.
568 * Iterating over entire database in NIS can be slow. With the
569 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
570 to trade time for memory. The entire database will be read at once.
571 Implemented by Ulrich Drepper.
573 * The interfaces introduced in RFC 3542 have been implemented by
574 Ulrich Drepper.
576 * Support for the new ELF hash table format was added by Ulrich Drepper.
578 * Support for priority inheritance mutexes added by Jakub Jelinek and
579 Ulrich Drepper.
581 * Support for priority protected mutexes added by Jakub Jelinek.
583 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
584 or_IN, csb_PL, fy_NL, sr_ME.
585 \f
586 Version 2.4
588 * More overflow detection functions.
590 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
591 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
593 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
594 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
595 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
596 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
597 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
598 by Masahide Washizawa.
600 * It is now possible to install audit libraries for the dynamic linker using
601 LD_AUDIT. Implemented by Ulrich Drepper.
603 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
604 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
605 For a libc and libpthread that works well on Linux 2.4 kernels, we
606 recommend using the stable 2.3 branch.
608 * The new function open_wmemstream acts like open_memstream,
609 but uses a wchar_t wide character buffer.
611 * The new function ppoll is an improved version of poll, similar to pselect.
613 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
614 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
615 renameat, unlinkat, linkat, symlinkat, readlinkat.
617 * New Linux kernel system calls: unshare,
618 inotify_init, inotify_add_watch, inotify_rm_watch.
620 * The euidaccess function is now also known by the alias eaccess,
621 for compatibility with some other systems.
623 * Timezone data updated to 2006b version.
624 \f
625 Version 2.3.6
627 * The following bugs are resolved with this release:
629 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
630 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
631 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
632 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
633 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
634 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
636 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
638 * As of this release, GCC 4 can be used to compile the C Library.
640 * Timezone data updated to 2005m version.
641 \f
642 Version 2.3.5
644 * The following bugs are resolved with this release:
646 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
647 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
648 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
649 777, 787, 821, 822, 823, 825
651 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
652 \f
653 Version 2.3.4
655 * Support for RFC 3678. Real implementations exist only for Linux so far.
656 Implemented by Ulrich Drepper.
658 * nscd can now cache entries persistently. Expiring entries are reloaded.
659 For speedups the cache can be shared in memory with client processes.
660 Implemented by Ulrich Drepper.
662 * nscd can now perform SELinux checks.
663 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
665 * getaddrinfo queries are now cached. Canonical name lookup is performed
666 efficiently.
667 Implemented by Ulrich Drepper.
669 * The nothrow function attribute is used when headers are used by gcc when
670 compiling C code. This can avoid significant amounts of exception
671 handling data.
673 * The malloc functions perform more error checking and are stricter when
674 it comes to reacting on errors. The default action is to terminate
675 the process after showing an error message. Implemented by Ulrich Drepper.
677 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
678 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
680 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
681 namespaces using the new function dlmopen(). This feature is of course,
682 like most other dynamic loading functionality, not available in statically
683 linked applications. Implemented by Ulrich Drepper.
685 * Low-overhead boundary checking variants of string and some stdio functions
686 were added. These are to be used in conjunction with a gcc patch by
687 Jakub Jelinek which adds calls to these functions if possible.
688 Implemented by Jakub Jelinek and Ulrich Drepper.
690 * Old code for several operating systems and machine architectures that
691 have not been in working condition in a long time have been removed from
692 the main source tree maintained by the GNU C Library's maintainers.
693 These files are now reside in the separate `ports' source module
694 that is usable as an add-on when building the library.
695 \f
696 Version 2.3.3
698 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
699 interrogate the dynamic linker, compatible with the Solaris interface.
701 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
702 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
704 * getifaddrs now uses the netlink interface on Linux to get its information.
705 Implemented by Thorsten Kukuk.
707 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
708 Implemented by Ulrich Drepper.
710 * support for non-executable stacks on x86 has been added. Changes mostly
711 by Roland McGrath.
713 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
714 and Ulrich Drepper.
716 * getaddrinfo now performs destination address selection according to
717 RFC 3484.
718 \f
719 Version 2.3.2
721 * Thread-safe interfaces for many functions that access locale data
722 were added in version 2.3, but these features were omitted from NEWS.
723 Many functions have variants with an `_l' suffix that take a `locale_t'
724 object as a parameter rather than consulting the current locale.
725 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
726 create and maintain `locale_t' objects. Additionally, the new function
727 `uselocale' sets "the current locale" (as used by functions not so
728 parameterized) set for an individual thread. These features were added
729 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
731 * The functions getresuid, getresgid, setresuid, and setresgid, which
732 have long been available on Linux, are now declared in <unistd.h>
733 and are now also available on the Hurd.
735 * ELF thread-local storage support (TLS) now works on x86-64.
737 * The new dynamic string token $LIB is expanded in shared library names.
738 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
740 * Aldy Hernandez contributed complete software floating point support for
741 PowerPC machines with no FPU.
743 * fexecve is implemented on Linux.
745 * The `btowc' function should work at least twice as fast due to
746 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
748 * With approriate thread add-ons cancelable functions are now implemented
749 in libc.so as well. No need to call the function in libpthread. This
750 change allowed to finally disable the incorrect and expensive handling
751 of weak definition in ld.so.
753 * Yet more PLT entries in libc.so have been removed. We finally arrived
754 at the bare minimum. Startup times improved appropriately.
756 * Support for the new Linux/x86 system call interface was added. The
757 AT_SYSINFO auxiliary vector entry is recognized and handled.
758 \f
759 Version 2.3
761 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
762 charsets.
764 * iconv (the program and the interface) now accepts empty names (excluding
765 options like //TRANSLIT) to mean "use charset of current locale".
767 * localedef can now transliterate characters in strings which are not in
768 the provided charmap. The information from the input locale is used.
770 * Prelinking support was added for ELF targets. This requires additional
771 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
773 * Read-only stdio streams now use mmap to speed up operation by eliminating
774 copying and buffer underflows. To use add 'm' to the mode string of
775 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
777 * The malloc functions were completely rewritten by Wolfram Gloger based
778 on Doug Lea's malloc-2.7.0.c.
780 * Isamu Hasegawa contributed a completely new and POSIX-conformant
781 implementation of regex.
783 * Bruno Haible upgraded the iconv and locale implementation to support
784 Unicode 3.2.
786 * Contents of the LC_* and LANG environment variables in the CEN style are
787 not recognized anymore. It never was used. Change by Ulrich Drepper.
789 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
790 thread-local storage (TLS) ABI on some platforms.
791 Changes by Ulrich Drepper. SH support by Kaz Kojima.
793 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
794 EUC-JISX0213, and TSCII.
796 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
797 BSD-compatible interface for getting all network interface addresses.
798 Implementation for IPv4 by Roland McGrath.
800 * Loading of locale data is faster due to the introduction of a locale
801 archive. Implemented by Roland McGrath and Ulrich Drepper.
803 * Startup times are significantly reduced by not using exported functions
804 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
805 and Ulrich Drepper.
807 * Steven Munroe contributed a port to PowerPC64/Linux.
808 \f
809 Version 2.2.6
811 * The Hurd now uses the GNU libio implementation of stdio rather than the
812 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
814 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
815 with the same behavior as the Linux system call of the same name.
816 \f
817 Version 2.2.5
819 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
820 128-bit long double format.
822 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
823 IBM1161, and IBM1162 charsets.
825 * Andreas Jaeger contributed a port to x86-64/Linux.
827 * Peter Bruin contributed a port to PowerPC/Hurd.
829 * libc functions using I/O streams now can handle wide-oriented streams
830 as well.
832 * optimizations in the dynamic linker. Binaries created by recent binutils
833 versions start up quicker due to reduced time spent on relocations.
835 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
836 \f
837 Version 2.2.4
839 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
840 asinh, atanh, j0 for the 128-bit long double format.
842 * Bruno Haible updated all the code handling Unicode in some form to
843 support Unicode 3.1.
845 * Speed of regex for single-byte locales is back to previous levels.
846 Patch by Isamu Hasegawa.
848 * Alpha, SPARC, and IA-64 now also using floating stacks.
850 * Startup time of internationalized applications greatly improved through
851 iconv cache. Use iconvconfig to generate the cache file.
852 Contributed by Ulrich Drepper.
854 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
855 severe performance problems. Patch by David Mosberger.
857 * The Hurd port got a lot more functionality like AIO, various stdio
858 extensions, etc. Mainly done by Roland McGrath.
860 * mtrace can now lookup symbols in shared libraries.
861 \f
862 Version 2.2.3
864 * Intel's IA-64 math library is largely integrated. It provides fast and
865 accurate implementatations for most basic and standard math functions
866 in float, double, and long double format.
868 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
869 and asin for the 96-bit long double format and asin, log, tan for the
870 128-bit long double format.
872 * The beginning of a last-bit accurate math library by IBM Haifa were added.
873 The basic double functions exist today. Contributed by Abraham Ziv
874 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
875 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
877 * An asynchronous name lookup library was added. The interface is designed
878 after POSIX AIO. The proposal was circulated beforehand to get comments.
879 No negative ones came in. Implemented by Ulrich Drepper.
881 * Port to S390/64bit contributed by Martin Schwidefsky
882 <schwidefsky@de.ibm.com>.
884 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
885 of functions for Linux/IA-64.
887 * The RPC code is now thread safe. Threads can now use the same service
888 of different services at the same time. Patch by Eric Norum
889 <eric.norum@usask.ca> with some help by Ulrich Drepper.
891 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
892 family of functions for Linux/S390.
894 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
895 of functions for Linux/x86.
897 * Port to Linux/CRIS contributed by Axis Communications.
898 \f
899 Version 2.2.2
901 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
902 we can now check for namespace violations and missing declarations. The
903 result is that almost all headers are now Unix-compliant (as defined in
904 the upcoming XPG6). The negative side is that some programs might need
905 corrections, too, if they depend on the incorrect form of the headers in
906 previous versions which defined too many symbols and included too many
907 other headers.
909 * regex now handles multibyte character sets correctly.
910 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
912 * iconv (the program) does now conform to the upcoming XPG6 and handles
913 charmaps. Instead of the charset names the path of charmaps can be
914 provided and the conversion happens based on this data.
915 Contributed by Ulrich Drepper.
917 * The locale program now provides detailed information about the installed
918 locales. While
920 locale -a
922 only lists the names of the supported locales
924 locale -a --verbose
926 provides details such as country, language, and codeset name.
927 Contributed by Ulrich Drepper.
928 \f
929 Version 2.2.1
931 * The gencat program now parses the input file according to the charset
932 selected by the LC_CTYPE category. This is important for stateful
933 character sets. To make generating catalogs easier there is a way
934 to overwrite the charset selected by the locale: before the first
935 message or $ quote line the catalog can contain a line like
937 $ codeset=ISO-8859-2
939 to select the charset (ISO-8859-2 in this case).
941 Implemented by Shinya Hanataka and Ulrich Drepper.
943 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
944 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
945 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
947 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
948 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
950 * The LANGUAGE environment variable is now ignored unless the locale is
951 changed from the default "C" locale.
953 * The usual bug fixes.
954 \f
955 Version 2.2
957 * Greg McGary added runtime support for bounds checking using gcc's
958 new -fbounded-pointers option. ix86 target is complete. PowerPC
959 is in progress.
961 * Thorsten Kukuk added secure mode support to nscd.
963 * The Berkeley db libraries have been removed.
965 Related, the nss_db module is now in a separate package since it
966 obviously requires a database library being available.
968 * Wide character I/O streams implemented by Ulrich Drepper.
970 * Functions from the extended socket API added by Ulrich Drepper.
972 * Functions feenableexcept and fedisableexcept to control the
973 behaviour of individual exceptions have been added by Andreas Jaeger.
975 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
977 * The resolver code has been updated from bind 8.2.3-T5B which supports
978 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
979 and Mark Kettenis.
981 This change could in some situations effect backward compatibility. Since
982 now `_res' is a thread-local instead of a global variable, modifying it
983 in one thread does not have any effect in other threads.
985 The resolver library was also extended to allow IPv6 as the transport
986 protocol for the requests. This work was done by Stig Venaas.
988 * Compatibility code for K&R C compilers has been removed from the
989 header files. A ISO C compiler is needed to use the library
990 (conforming to either C89 or C99 standard).
992 * Complete rewrite of the localedef program to support multibyte character
993 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
994 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
995 Implemented by Ulrich Drepper.
997 Bruno Haible significantly improved the generation and use of the data
998 structures for the wide character tables.
1000 * Plural handling in gettext implemented by Ulrich Drepper.
1002 * The utmp daemon has been removed.
1004 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1006 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1007 and Yutaka Niibe.
1009 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1011 * POSIX barriers implemented by Kaz Kylheku.
1013 * POSIX spawn function family implemented by Ulrich Drepper.
1015 * POSIX spinlocks are now available.
1017 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1019 * the configure option --enable-kernel=X.Y.Z allows to strip out
1020 compatibility for kernel versions before X.Y.Z. This is currently only
1021 implemented for Linux.
1023 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1024 field sin6_scope_id. This means that all programs using IPv6 should be
1025 recompiled. Don't expect binary compatibility with previous glibc
1026 versions.
1028 * various conversion modules for IBM character sets contributed by
1029 Masahide Washizawa.
1031 * IA-64 port by Jes Sorensen and HJ Lu.
1032 \f
1033 Version 2.1.3
1035 * bug fixes
1037 \f
1038 Version 2.1.2
1040 * bug fixes
1042 \f
1043 Version 2.1.1
1045 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1047 * New xdr functions are added; some rpc functions are now 64bit clean.
1049 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1051 * Fixed known incompatibilities with glibc 2.0.
1053 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1055 * Optimized a number of functions (especially the ELF dynamic loader).
1057 * Update timezone data files.
1059 * lots of charmaps corrections
1061 * some new locale definitions and charmaps
1063 \f
1064 Version 2.1
1066 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1067 conform to POSIX member type requirements. Symbol versions have been
1068 adjusted as needed within the library, and for direct use by applications,
1069 but there is potential for problems if third-party libraries use
1070 struct timeval as part of their interface. This does not present
1071 a problem for X and other "essential" system libraries.
1073 * An additional locale model to support C++ Standard Library locale
1074 model and probably more was implemented by Ulrich Drepper.
1076 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1077 symbol level.
1079 * Miles Bader provided the `argp' function family to support hierachical
1080 command line argument parsing, layered on top of getopt.
1082 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1084 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1085 numbers.
1087 * scanf recognizes the %a and %A format for scanning floating point numbers.
1089 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1090 information and interfaces for the available integer types.
1092 * about 130 new math functions were added to implement the ISO C9x math
1093 library.
1095 * the new header <complex.h> contains definitions of the complex math
1096 functions from ISO C 9X.
1098 * the new header <tgmath.h> defines generic macros to use complex or
1099 real valued functions.
1101 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1103 * Andreas Jaeger provided a test suite for the math library.
1105 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1107 * Ulrich Drepper added character set conversion functions (iconv).
1109 * Optimized string functions have been added.
1111 * The localedata addon is now part of glibc.
1113 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1115 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1116 daemon for NSS (nscd).
1118 Missing a better place here are some numbers on improvements. Under
1119 Linux 2.1.125 un-tar-ing the kernel sources takes
1121 user system wall
1123 using local files 12.19s 6.88s 22.91s
1125 using NIS 13.92s 8.91s 26.34s
1127 using NIS & nscd 10.37s 7.34s 25.30s
1129 using NIS+ 27.57s 30.37s 640.46s
1131 using NIS+ & nscd 10.25s 7.83s 26.51s
1133 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1135 Keep in mind that non-namelookup related operations dominate above times.
1136 It was just a common complain that using NIS+ unpacking the kernel is
1137 horribly slow.
1139 [1] The old nscd implementation is not available anymore since it was
1140 distributed with glibc up to version 2.0.98 and thus is now replaced.
1142 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1144 * Mark Kettenis provided a Hesiod NSS module.
1146 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1147 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1149 * rcmd can now handle netgroups (Dick Streefland).
1151 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1152 Bambrough.
1154 * Support for the IPv6 protocol has been added to the socket API, as per the
1155 latest draft standards.
1157 * Support for Linux 2.2 has been added.
1159 * Interface changes relative to the latest 2.0.x release:
1160 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1161 addseverity NEW: Unix98
1162 alphasort64 NEW: LFS
1163 argp_err_exit_status NEW: argp, GNU ext
1164 argp_error NEW: argp, GNU ext
1165 argp_failure NEW: argp, GNU ext
1166 argp_help NEW: argp, GNU ext
1167 argp_parse NEW: argp, GNU ext
1168 argp_program_bug_address NEW: argp, GNU ext
1169 argp_program_version NEW: argp, GNU ext
1170 argp_program_version_hook NEW: argp, GNU ext
1171 argp_state_help NEW: argp, GNU ext
1172 argp_usage NEW: argp, GNU ext
1173 authdes_create NEW: Secure RPC
1174 authdes_getucred NEW: Secure RPC
1175 authdes_pk_create NEW: Secure RPC
1176 backtrace NEW: GNU ext.
1177 backtrace_symbols NEW: GNU ext.
1178 backtrace_symbols_fd NEW: GNU ext.
1179 cacos NEW: ISO C 9x
1180 cacosf NEW: ISO C 9x
1181 cacosh NEW: ISO C 9x
1182 cacoshf NEW: ISO C 9x
1183 cacoshl NEW: ISO C 9x
1184 cacosl NEW: ISO C 9x
1185 capget NEW: kernel
1186 capset NEW: kernel
1187 carg NEW: ISO C 9x
1188 cargf NEW: ISO C 9x
1189 cargl NEW: ISO C 9x
1190 casin NEW: ISO C 9x
1191 casinf NEW: ISO C 9x
1192 casinh NEW: ISO C 9x
1193 casinhf NEW: ISO C 9x
1194 casinhl NEW: ISO C 9x
1195 casinl NEW: ISO C 9x
1196 catan NEW: ISO C 9x
1197 catanf NEW: ISO C 9x
1198 catanh NEW: ISO C 9x
1199 catanhf NEW: ISO C 9x
1200 catanhl NEW: ISO C 9x
1201 catanl NEW: ISO C 9x
1202 cbc_crypt NEW: Secure RPC
1203 ccos NEW: ISO C 9x
1204 ccosf NEW: ISO C 9x
1205 ccosh NEW: ISO C 9x
1206 ccoshf NEW: ISO C 9x
1207 ccoshl NEW: ISO C 9x
1208 ccosl NEW: ISO C 9x
1209 cexp NEW: ISO C 9x
1210 cexpf NEW: ISO C 9x
1211 cexpl NEW: ISO C 9x
1212 cimag NEW: ISO C 9x
1213 cimagf NEW: ISO C 9x
1214 cimagl NEW: ISO C 9x
1215 clearerr_locked REMOVED
1216 clntunix_create NEW: sunrpc ext
1217 clog NEW: ISO C 9x
1218 clog10 NEW: ISO C 9x
1219 clog10f NEW: ISO C 9x
1220 clog10l NEW: ISO C 9x
1221 clogf NEW: ISO C 9x
1222 clogl NEW: ISO C 9x
1223 conj NEW: ISO C 9x
1224 conjf NEW: ISO C 9x
1225 conjl NEW: ISO C 9x
1226 cpow NEW: ISO C 9x
1227 cpowf NEW: ISO C 9x
1228 cpowl NEW: ISO C 9x
1229 cproj NEW: ISO C 9x
1230 cprojf NEW: ISO C 9x
1231 cprojl NEW: ISO C 9x
1232 creal NEW: ISO C 9x
1233 crealf NEW: ISO C 9x
1234 creall NEW: ISO C 9x
1235 creat64 NEW: LFS
1236 csin NEW: ISO C 9x
1237 csinf NEW: ISO C 9x
1238 csinh NEW: ISO C 9x
1239 csinhf NEW: ISO C 9x
1240 csinhl NEW: ISO C 9x
1241 csinl NEW: ISO C 9x
1242 csqrt NEW: ISO C 9x
1243 csqrtf NEW: ISO C 9x
1244 csqrtl NEW: ISO C 9x
1245 ctan NEW: ISO C 9x
1246 ctanf NEW: ISO C 9x
1247 ctanh NEW: ISO C 9x
1248 ctanhf NEW: ISO C 9x
1249 ctanhl NEW: ISO C 9x
1250 ctanl NEW: ISO C 9x
1251 des_setparity NEW: Secure RPC
1252 ecb_crypt NEW: Secure RPC
1253 endutxent NEW: Unix98
1254 exp10 NEW: ISO C 9x
1255 exp10f NEW: ISO C 9x
1256 exp10l NEW: ISO C 9x
1257 exp2 NEW: ISO C 9x
1258 exp2f NEW: ISO C 9x
1259 exp2l NEW: ISO C 9x
1260 fattach NEW: STREAMS
1261 fdetach NEW: STREAMS
1262 fdim NEW: ISO C 9x
1263 fdimf NEW: ISO C 9x
1264 fdiml NEW: ISO C 9x
1265 feclearexcept NEW: ISO C 9x
1266 fegetenv NEW: ISO C 9x
1267 fegetexceptflag NEW: ISO C 9x
1268 fegetround NEW: ISO C 9x
1269 feholdexcept NEW: ISO C 9x
1270 feof_locked REMOVED
1271 feraiseexcept NEW: ISO C 9x
1272 ferror_locked REMOVED
1273 fesetenv NEW: ISO C 9x
1274 fesetexceptflag NEW: ISO C 9x
1275 fesetround NEW: ISO C 9x
1276 fetestexcept NEW: ISO C 9x
1277 feupdateenv NEW: ISO C 9x
1278 fflush_locked REMOVED
1279 ffsl NEW: GNU ext.
1280 ffsll NEW: GNU ext.
1281 fgetpos64 NEW: LFS
1282 fgets_unlocked NEW: GNU ext.
1283 fileno_locked REMOVED
1284 fma NEW: ISO C 9x
1285 fmaf NEW: ISO C 9x
1286 fmal NEW: ISO C 9x
1287 fmax NEW: ISO C 9x
1288 fmaxf NEW: ISO C 9x
1289 fmaxl NEW: ISO C 9x
1290 fmin NEW: ISO C 9x
1291 fminf NEW: ISO C 9x
1292 fminl NEW: ISO C 9x
1293 fmtmsg NEW: Unix98
1294 fopen64 NEW: LFS
1295 fputc_locked REMOVED
1296 fputs_unlocked NEW: GNU ext.
1297 fread_unlocked NEW: GNU ext.
1298 freopen64 NEW: LFS
1299 fseeko NEW: Unix98
1300 fsetpos64 NEW: LFS
1301 fstatfs64 NEW: LFS
1302 fstatvfs NEW: Unix98
1303 fstatvfs64 NEW: LFS
1304 ftello NEW: Unix98
1305 ftello64 NEW: LFS
1306 ftruncate64 NEW: LFS
1307 ftw64 NEW: LFS
1308 fwrite_unlocked NEW: GNU ext.
1309 gai_strerror NEW: IPv6
1310 gamma_r REMOVED
1311 gammaf_r REMOVED
1312 gammal_r REMOVED
1313 getchar_locked REMOVED
1314 getdate NEW: Unix98
1315 getdate_err NEW: Unix98
1316 getdate_r NEW: GNU ext.
1317 getmsg NEW: STREAMS
1318 getnameinfo NEW: IPv6
1319 getnetname NEW: Secure RPC
1320 getpmsg NEW: STREAMS
1321 getpt NEW: Unix98 PTY
1322 getrlimit64 NEW: LFS
1323 getutxent NEW: Unix98
1324 getutxid NEW: Unix98
1325 getutxline NEW: Unix98
1326 glob64 NEW: GNU ext.
1327 globfree64 NEW: GNU ext.
1328 gnu_get_libc_release NEW: GNU ext.
1329 gnu_get_libc_version NEW: GNU ext.
1330 grantpt NEW: Unix98 PTY
1331 host2netname NEW: Secure RPC
1332 iconv NEW: iconv
1333 iconv_close NEW: iconv
1334 iconv_open NEW: iconv
1335 if_freenameindex NEW: IPv6
1336 if_indextoname NEW: IPv6
1337 if_nameindex NEW: IPv6
1338 if_nametoindex NEW: IPv6
1339 in6addr_any NEW: IPv6
1340 in6addr_loopback NEW: IPv6
1341 inet6_isipv4mapped NEW: IPv6
1342 isastream NEW: STREAMS
1343 iswblank NEW: GNU ext.
1344 key_decryptsession NEW: Secure RPC
1345 key_decryptsession_pk NEW: Secure RPC
1346 key_encryptsession NEW: Secure RPC
1347 key_encryptsession_pk NEW: Secure RPC
1348 key_gendes NEW: Secure RPC
1349 key_get_conv NEW: Secure RPC
1350 key_secretkey_is_set NEW: Secure RPC
1351 key_setnet NEW: Secure RPC
1352 key_setsecret NEW: Secure RPC
1353 llrint NEW: ISO C 9x
1354 llrintf NEW: ISO C 9x
1355 llrintl NEW: ISO C 9x
1356 llround NEW: ISO C 9x
1357 llroundf NEW: ISO C 9x
1358 llroundl NEW: ISO C 9x
1359 log2 NEW: ISO C 9x
1360 log2f NEW: ISO C 9x
1361 log2l NEW: ISO C 9x
1362 lrint NEW: ISO C 9x
1363 lrintf NEW: ISO C 9x
1364 lrintl NEW: ISO C 9x
1365 lround NEW: ISO C 9x
1366 lroundf NEW: ISO C 9x
1367 lroundl NEW: ISO C 9x
1368 lseek64 NEW: LFS
1369 makecontext NEW: Unix98
1370 mempcpy NEW: GNU ext.
1371 mmap64 NEW: LFS
1372 moncontrol REMOVED
1373 modify_ldt NEW: kernel
1374 nan NEW: ISO C 9x
1375 nanf NEW: ISO C 9x
1376 nanl NEW: ISO C 9x
1377 nearbyint NEW: ISO C 9x
1378 nearbyintf NEW: ISO C 9x
1379 nearbyintl NEW: ISO C 9x
1380 netname2host NEW: Secure RPC
1381 netname2user NEW: Secure RPC
1382 nexttoward NEW: ISO C 9x
1383 nexttowardf NEW: ISO C 9x
1384 nexttowardl NEW: ISO C 9x
1385 nftw NEW: Unix98
1386 nftw64 NEW: LFS
1387 open64 NEW: LFS
1388 passwd2des NEW: Secure RPC
1389 pow10 NEW: GNU ext.
1390 pow10f NEW: GNU ext.
1391 pow10l NEW: GNU ext.
1392 pread NEW: Unix98
1393 pread64 NEW: LFS
1394 printf_size NEW: GNU ext.
1395 printf_size_info NEW: GNU ext.
1396 profil_counter REMOVED
1397 pthread_mutexattr_getkind_np REPLACED
1398 pthread_mutexattr_setkind_np REPLACED
1399 ptsname NEW: Unix98 PTY
1400 ptsname_r NEW: Unix98 PTY
1401 putc_locked REMOVED
1402 putchar_locked REMOVED
1403 putgrent NEW: GNU ext.
1404 putmsg NEW: STREAMS
1405 putpmsg NEW: STREAMS
1406 pututxline NEW: Unix98
1407 pwrite NEW: Unix98
1408 pwrite64 NEW: LFS
1409 readdir64 NEW: LFS
1410 readdir64_r NEW: LFS
1411 remquo NEW: ISO C 9x
1412 remquof NEW: ISO C 9x
1413 remquol NEW: ISO C 9x
1414 round NEW: ISO C 9x
1415 roundf NEW: ISO C 9x
1416 roundl NEW: ISO C 9x
1417 rtime NEW: GNU ext.
1418 scalbln NEW: ISO C 9x
1419 scalblnf NEW: ISO C 9x
1420 scalblnl NEW: ISO C 9x
1421 scandir64 NEW: LFS
1422 sendfile NEW: kernel
1423 setcontext NEW: Unix98
1424 setrlimit64 NEW: LFS
1425 setutxent NEW: Unix98
1426 sighold NEW: Unix98
1427 sigignore NEW: Unix98
1428 sigqueue NEW: POSIX.1b
1429 sigrelse NEW: Unix98
1430 sigset NEW: POSIX.1b
1431 sigtimedwait NEW: POSIX.1b
1432 sigwaitinfo NEW: POSIX.1b
1433 sincos NEW: GNU ext.
1434 sincosf NEW: GNU ext.
1435 sincosl NEW: GNU ext.
1436 statfs64 NEW: LFS
1437 statvfs NEW: Unix98
1438 statvfs64 NEW: LFS
1439 strcasestr NEW: GNU ext.
1440 strtoimax NEW: ISO C 9x
1441 strtoumax NEW: ISO C 9x
1442 strverscmp NEW: GNU ext.
1443 svcauthdes_stats NEW: Secure RPC
1444 svcunix_create NEW: sunrpc etx
1445 svcunixfd_create NEW: sunrpc ext
1446 swapcontext NEW: Unix98
1447 tcgetsid NEW: Unix98 PTY
1448 tdestroy NEW: GNU ext.
1449 tgamma NEW: ISO C 9x
1450 tgammaf NEW: ISO C 9x
1451 tgammal NEW: ISO C 9x
1452 tmpfile64 NEW: LFS
1453 trunc NEW: ISO C 9x
1454 truncate64 NEW: LFS
1455 truncf NEW: ISO C 9x
1456 truncl NEW: ISO C 9x
1457 umount2 NEW: kernel
1458 unlockpt NEW: Unix98 PTY
1459 updwtmpx NEW: Unix98
1460 user2netname NEW: Secure RPC
1461 utmpxname NEW: Unix98
1462 versionsort NEW: GNU ext.
1463 versionsort64 NEW: GNU ext.
1464 waitid NEW: Unix98
1465 wcscasecmp NEW: GNU ext.
1466 wcsncasecmp NEW: GNU ext.
1467 wcsnlen NEW: GNU ext.
1468 wcstoimax NEW: ISO C 9x
1469 wcstoll NEW: ISO C 9x
1470 wcstoull NEW: ISO C 9x
1471 wcstoumax NEW: ISO C 9x
1472 wcswcs NEW: Unix98
1473 wordexp NEW: POSIX.2
1474 wordfree NEW: POSIX.2
1475 write_profiling REMOVED
1476 xdecrypt NEW: Secure RPC
1477 xdr_authdes_cred NEW: Secure RPC
1478 xdr_authdes_verf NEW: Secure RPC
1479 xdr_cryptkeyarg NEW: Secure RPC
1480 xdr_cryptkeyarg2 NEW: Secure RPC
1481 xdr_cryptkeyres NEW: Secure RPC
1482 xdr_getcredres NEW: Secure RPC
1483 xdr_key_netstarg NEW: Secure RPC
1484 xdr_key_netstres NEW: Secure RPC
1485 xdr_keybuf NEW: Secure RPC
1486 xdr_keystatus NEW: Secure RPC
1487 xdr_netnamestr NEW: Secure RPC
1488 xdr_sizeof NEW: Secure RPC
1489 xdr_unixcred NEW: sunrpc ext
1490 xencrypt NEW: Secure RPC
1491 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1492 \f
1493 Version 2.0.6
1495 * more bug fixes
1497 \f
1498 Version 2.0.5
1500 * more bug fixes
1502 * inet_ntoa is thread-safe
1504 * updwtmp is moved from libutil to libc
1506 * rewrite of cbrt function
1508 * update of timezone data
1509 \f
1510 Version 2.0.4
1512 * more bug fixes
1513 \f
1514 Version 2.0.3
1516 * more bug fixes
1517 \f
1518 Version 2.0.2
1520 * more bug fixes
1522 * add atoll function
1524 * fix complex problems in Berkeley DB code
1526 * fix math functions
1527 \f
1528 Version 2.0.1
1530 * fixed lots of header problems (especially Linux/GNU specific)
1532 * dynamic loader preserves all registers
1534 * Roland McGrath provided support for handling of auxiliary objects in
1535 the ELF dynamic loader.
1537 * support for parallel builds is improved
1538 \f
1539 Version 2.0
1541 * GNU extensions are no longer declared by default. To enable them you
1542 must define the macro `_GNU_SOURCE' in your program or compile with
1543 `-D_GNU_SOURCE'.
1545 * The library has changed from using GNU ld symbol aliases to using weak
1546 symbols where available. The ELF object file format supports weak
1547 symbols; GNU ld also supports weak symbols in the a.out format. (There
1548 is also now support for other GNU ld extensions in ELF. Use the
1549 `--with-elf' option to configure to indicate you have ELF, and
1550 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1551 of many files which contained only symbol aliases, reducing the size of
1552 the source and the compiled library; many other files were renamed to
1553 less cryptic names previously occupied by the symbol alias files.
1554 There is a new header file <elf.h> for programs which operate on
1555 files in the ELF format.
1557 * Converted to Autoconf version 2, so `configure' has more options.
1558 Run `configure --help' to see the details.
1560 * The library can now be configured to build profiling, highly-optimized
1561 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1562 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1563 `configure' enable building these extra libraries. The shared library is
1564 built by default when using both ELF and GNU ld. When shared libraries
1565 are enabled, the new library `-ldl' is available for arbitrary run-time
1566 loading of shared objects; its interface is defined in <dlfcn.h>. The
1567 new header file <link.h> gives access to the internals of the run-time
1568 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1569 application of same name on other systems and it provides information
1570 about dynamically linked binaries.
1572 * The C library now provides the run-time support code for profiling
1573 executables compiled with `-pg'. Programs can control the profiling code
1574 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1575 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1576 the support for this file format was contributed by David Mosberger-Tang.
1578 * The math code has been replaced with a math library based on fdlibm from
1579 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1580 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1581 functions. The math functions now reside in a separate library, so
1582 programs using them will need to use `-lm' their linking commands.
1584 * John C. Bowman contributed optimized ix87 assembler inline functions.
1586 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1587 mechanism similar to that found in Solaris 2. This is now used for the
1588 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1589 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1590 file controls what services are used for each individual database. This
1591 works by loading shared libraries with names specified in `nsswitch.conf',
1592 so service modules can be changed or added at any time without even
1593 relinking any program. Currently there are the file, db, and NIS based
1594 NSS services available.
1596 * The new functions `strtoq' and `strtouq' parse integer values from
1597 strings, like `strtol' and `strtoul', but they return `long long int' and
1598 `unsigned long long int' values, respectively (64-bit quantities).
1600 * The new functions `strtof' and `strtold' parse floating-point values from
1601 strings, like `strtod', but they return `float' and `long double' values,
1602 respectively (on some machines `double' and `long double' are the same).
1604 * Ulrich Drepper has contributed new implementations of the floating-point
1605 printing and reading code used in the `printf' family of functions and
1606 `strtod', `strtof', and `strtold'. These new functions are perfectly
1607 accurate, and much faster than the old ones.
1609 * The implementation of the POSIX locale model was completely rewritten by
1610 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1611 to compile the POSIX locale definition.
1613 * The former dummy implementations of the strcoll and strxfrm function are
1614 now replaced by fully functional code contributed by Ulrich Drepper. The
1615 collation information comes from the POSIX locale definitions.
1617 * The new header <langinfo.h> defines an interface for accessing
1618 various locale-dependent data (using the locale chosen with `setlocale').
1620 * Ulrich Drepper has contributed a new suite of functions for operation on
1621 wide-character and multibyte-character strings, in <wchar.h>;
1622 and classification and case conversion of wide characters, in <wctype.h>.
1623 These new functions are conforming to the ISO C, Amendement 1 specification.
1625 * There is now a second implementation of the standard I/O library available.
1626 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1627 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1629 * You can now use positional parameter specifications in format strings
1630 for the `printf' and `scanf' families of functions. For example,
1631 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1632 ``Number 6, Mr Jones''. This is mainly useful when providing different
1633 format strings for different languages, whose grammars may dictate
1634 different orderings of the values being printed. To support this
1635 feature, the interface for `register_printf_handler' has changed; see
1636 the header file <printf.h> for details.
1638 * The `printf' and `scanf' families of functions now understand a new
1639 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1640 to group numbers as indicated by the locale; for `scanf' and friends, this
1641 says to accept as valid only a number with all the proper grouping
1642 separators in the right places. In the default "C" locale, numbers are
1643 not grouped; but locales for specific countries will define the usual
1644 conventions (i.e. separate thousands with `,' in the US locale).
1646 * The pgrp functions have been regularized, slightly incompatibly but much
1647 less confusingly. The core functions are now `getpgid' and `setpgid',
1648 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1649 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1650 provided for compatibility. There is no longer an incompatible `getpgrp'
1651 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1653 * The new header file <fts.h> and suite of functions simplify programs that
1654 operate on directory trees. This code comes from 4.4 BSD.
1656 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1657 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1658 NSS scheme used in glibc.
1660 * There is a new malloc debugging hook `__memalign_hook'.
1662 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1663 `unsigned int' in <sys/types.h>. These are for compatibility only and
1664 their use is discouraged.
1666 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1667 done differently, so that it works even without GNU ld.
1669 * New function `euidaccess' checks allowed access to a file like `access',
1670 but using the effective IDs instead of the real IDs.
1672 * The time zone data files have been updated for the latest and greatest
1673 local time conventions of the countries of the world.
1675 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1676 see <dirent.h>.
1678 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1679 for formatting floating-point numbers. They are provided only for
1680 compatibility; new programs should use `sprintf' instead. There are
1681 also equivalent function for the `long double' floating-point type and
1682 all functions also exist in a reentrant form.
1684 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1685 functions for maintaining the login-record files (primarily of use to
1686 system programs such as `login'), and convenient functions for
1687 allocating and initializing a pseudo-terminal (pty) device.
1689 * Ulrich Drepper has contributed new support for System V style
1690 shared memory and IPC on systems that support it.
1692 * Ulrich Drepper has contributed several miscellaneous new functions found
1693 in System V: The `hsearch' family of functions provide an effective
1694 implementation of hash tables; `a64l' and `l64a' provide a very simple
1695 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1696 number generator.
1698 * Ulrich Drepper has contributed new reentrant counterparts for the
1699 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1701 * Ulrich Drepper has contributed new, highly-optimized versions of several
1702 string functions for the i486/Pentium family of processors.
1704 * Ulrich Drepper has updated the Linux-specific code, based largely
1705 on work done in Hongjiu Lu's version of GNU libc for Linux.
1706 The GNU library now supports Linux versions 2.0.10 and later,
1707 using the ELF object file format (i[3456]86-*-linux).
1709 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1711 * David Mosberger-Tang and Richard Henderson have ported the C library
1712 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1713 dynamic linking support for ELF/Alpha.
1715 * Richard Henderson contributed several Alpha optimized assembler function
1716 for arithmetic and string handling.
1718 * Ulrich Drepper has contributed a new set of message catalog functions to
1719 support multiple languages using the <libintl.h> interface, for use with
1720 his new package GNU gettext. Translation volunteers have contributed
1721 catalogs of the library's messages in Spanish, German, and Korean.
1723 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1724 program and the `catgets' function for reading the catalog files it
1725 creates. (The <libintl.h> interface is preferred; we include the
1726 <nl_types.h> interface using `catgets' only for source compatibility with
1727 programs already written to use it.)
1729 * New header file <values.h> gives SVID-compatible names for <limits.h>
1730 constants.
1732 * Various new macros, declarations, and small header files for compatibility
1733 with 4.4 BSD.
1735 * New function `group_member' is a convenient way to check if a process has
1736 a given effective group ID.
1738 * When using GCC 2.7 and later, the socket functions are now declared in a
1739 special way so that passing an argument of type `struct sockaddr_in *',
1740 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1741 `struct sockaddr *' type, does not generate a type-clash warning.
1743 * New function `error' declared in header file <error.h> is a convenient
1744 function for printing error messages and optionally exiting; this is the
1745 canonical function used in GNU programs. The new functions `err', `warn',
1746 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1747 doing the same thing.
1749 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1750 POSIX.2 `glob' function to do ~ and {...} expansion.
1752 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1753 `clearenv' which is used in POSIX.9 is also available.
1755 * New function `getsid' returns session ID number on systems that support it.
1757 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1758 files <db.h> and <mpool.h> provide a rich set of functions for several
1759 types of simple databases stored in memory and in files, and <ndbm.h> is
1760 an old `ndbm'-compatible interface using the `db' functions. Link with
1761 `-ldb' to get these functions.
1763 * New macro `strdupa' copies a string like `strdup', but uses local stack
1764 space from `alloca' instead of dynamic heap space from `malloc'.
1766 * New function `strnlen' is like `strlen' but searches only a given maximum
1767 number of characters for the null terminator. `stpncpy', `strndup' and
1768 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1769 function.
1771 * New function `statfs' in header <sys/statfs.h>.
1773 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1774 provide convenient functions for operating on blocks of null-terminated
1775 strings.
1777 * A new suite of functions in <utmp.h> handle all the details of reading
1778 and writing the utmp file.
1780 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1781 Thorsten Kukuk.
1783 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1784 completely POSIX compliant and also implemented the extended functionality
1785 to handle alternate digit representation and alternate era date formats.
1787 * Ulrich Drepper provided an implementation of the `strptime' function
1788 defined in XPG4.2 which transforms a string into a `struct tm' value.
1790 * Paul Eggert provided the tzselect shell script as part of the timezone
1791 code. The shell script makes it easy to select the correct timezone
1792 specification.
1794 * The implementation of the malloc family of functions is completely replaced
1795 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1796 The implementation uses the mmap function (if available) and it is
1797 optimized for the use in multi threaded programs.
1799 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1800 functions. This new functionality is usable by specifying a special
1801 salt string and it is compatible with implementation on *BSD systems.
1803 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1804 `getsubopt' to handle second level command line options, `bsd_signal'
1805 to access BSD style `signal' functionality, the obsolete `regexp' style
1806 expression matcher.
1808 * the `lchown' function is available on system which support this
1809 functionality.
1811 * The implementation of the shadow password handling function was contributed
1812 by Ulrich Drepper.
1814 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1816 * POSIX.1g support was added. The <sys/select.h> header is available,
1817 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1818 implementation of `getaddrinfo'.
1819 \f
1820 Version 1.09
1822 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1824 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1825 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1827 * The new function `daemon' from 4.4 BSD is useful for server programs that
1828 want to put themselves in the background.
1830 * Joel Sherrill has contributed support for several standalone boards that
1831 run without an operating system.
1833 * `printf', `scanf' and friends now accept a `q' type modifier for long
1834 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1836 * All of the code taken from BSD (notably most of the math and networking
1837 routines) has been updated from the BSD 4.4-Lite release.
1839 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1841 * The new functions `getdomainname' and `setdomainname' fetch or change the
1842 YP/NIS domain name. These are system calls which exist on systems which
1843 have YP (aka NIS).
1845 * The time zone data files have been updated for the latest international
1846 conventions.
1848 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1849 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1850 \f
1851 Version 1.08
1853 * The C library now includes support for Sun RPC, from Sun's free
1854 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1855 are included. (There is still no support for YP.)
1857 * Tom Quinn has contributed a port of the C library to SGI machines running
1858 Irix 4 (mips-sgi-irix4).
1860 * The new `lockf' function is a simplified interface to the locking
1861 facilities of `fcntl', included for compatibility.
1863 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1865 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1867 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1868 compatibility.
1870 * The error message printed by `assert' for a failed assertion now includes
1871 the name of the program (if using GNU ld) and the name of the calling
1872 function (with versions of GCC that support this).
1874 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1876 * The library now includes the <sys/mman.h> header file and memory
1877 management functions `mmap', `munmap', `mprotect', `msync', and
1878 `madvise', on systems that support those facilities.
1880 * The interface for `mcheck' has changed slightly: the function called to
1881 abort the program when an allocation inconsistency is detected now takes
1882 an argument that indicates the type of failure. The new function
1883 `mprobe' lets you request a consistency check for a particular block at
1884 any time (checks are normally done only when you call `free' or `realloc'
1885 on a block).
1887 * It is now possible to easily cross-compile the C library, building on one
1888 system a library to run on another machine and/or operating system. All
1889 you need to do is set the variable `HOST_CC' in `configparms' to the
1890 native compiler for programs to run on the machine you are building on (a
1891 few generator programs are used on Unix systems); set `CC' to the
1892 cross-compiler.
1894 * The new function `fexecve' (only implemented on the GNU system) executes
1895 a program file given a file descriptor already open on the file.
1896 \f
1897 Version 1.07
1899 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1900 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1902 * You can set the variable `libprefix' in `configparms' to specify a prefix
1903 to be prepended to installed library files; this makes it easy to install
1904 the GNU C library to be linked as `-lgnuc' or whatever.
1906 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1907 copies a limited number of characters from a string, and returns the
1908 address of the last character written.
1910 * You no longer need to check for whether the installed `stddef.h' is
1911 compatible with the GNU C library. configure now checks for you.
1913 * You can now define a per-stream `fileno' function to convert the
1914 stream's cookie into an integral file descriptor.
1916 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1917 allocates zero bytes of storage, and returns a unique pointer which
1918 you can pass to `realloc' or `free'. The behavior is undefined if
1919 you dereference this pointer.
1921 * The C library now runs on Sony NEWS m68k machines running either
1922 NewsOS 3 or NewsOS 4.
1924 * The new `syscall' function is a system-dependent primitive function
1925 for invoking system calls. It has the canonical behavior on Unix
1926 systems, including unreliable return values for some calls (such as
1927 `pipe', `fork' and `getppid').
1929 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1930 to `EAGAIN', which is the preferred name. On systems whose kernels
1931 use two distinct codes, the C library now translates EWOULDBLOCK to
1932 EAGAIN in every system call function.
1933 \f
1934 Version 1.06
1936 * The GNU C Library Reference Manual is now distributed with the library.
1937 `make dvi' will produce a DVI file of the printed manual.
1938 `make info' will produce Info files that you can read on line using C-h i
1939 in Emacs or the `info' program.
1940 Please send comments on the manual to bug-glibc-manual@gnu.org.
1942 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1944 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1946 * Jason Merrill has contributed a port to the Sequent Symmetry running
1947 Dynix version 3 (i386-sequent-dynix).
1949 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1950 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1952 * New function `memory_warnings' lets you arrange to get warnings when
1953 malloc is running out of memory to allocate, like Emacs gives you.
1955 * The C library now contains the relocating allocator used in Emacs 19 for
1956 its editing buffers. This allocator (ralloc) minimizes allocation
1957 overhead and fragmentation by moving allocated regions around whenever it
1958 needs to. You always refer to a ralloc'd region with a "handle" (a
1959 pointer to a pointer--an object of type `void **').
1961 * There is a new `printf' format: `%m' gives you the string corresponding
1962 to the error code in `errno'.
1964 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1965 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1966 pass, the `a' modifier says to fill in a `char **' you pass with a
1967 malloc'd string.
1969 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
1970 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
1971 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
1973 * `mkstemp' is a traditional Unix function to atomically create and open a
1974 uniquely-named temporary file.
1975 \f
1976 Version 1.05
1978 * The standard location for the file that says what the local timezone is
1979 has changed again. It is now `/usr/local/etc/localtime' (or more
1980 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
1982 * The distribution no longer contains any files with names longer than 14
1983 characters.
1985 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
1986 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
1988 * New functions `ttyslot' and `syslog' from 4.4 BSD.
1989 \f
1990 Version 1.04
1992 * The configuration process has changed quite a bit. The `configure'
1993 script is now used just like the configuration scripts for other GNU
1994 packages. The `sysdeps' directory hierarchy is much rearranged.
1995 The file `INSTALL' explains the new scheme in detail.
1997 * The header files no longer need to be processed into ANSI C and
1998 traditional C versions. There is just one set of files to install, and
1999 it will work with ANSI or old C compilers (including `gcc -traditional').
2001 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2002 MIPS DECStation running Ultrix 4.
2004 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2005 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2006 made itself into a shared library.
2008 * Yet further improved support for the i386, running 4.3 BSD-like systems
2009 (such as Mach 3 with the Unix single-server), or System V.
2011 * New function `strncasecmp' to do case-insensitive string comparison
2012 with limited length.
2014 * New function `strsep' is a reentrant alternative to `strtok'.
2016 * New functions `scandir' and `alphasort' for searching directories.
2018 * New function `setenv' is a better interface to `putenv'.
2020 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2021 function for traversing a directory tree.
2023 * The GNU obstack package is now also part of the C library.
2024 The new function `open_obstack_stream' creates a stdio stream that
2025 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2026 formatted output directly to an obstack.
2028 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2029 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2031 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2033 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2034 things to your strings.
2036 * There are some new test programs: test-fseek, testmb, and testrand.
2038 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2039 These ports are not finished, but are a good starting place for really
2040 supporting those systems.
2042 * `/etc/localtime' is now the standard location for the file that says what
2043 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2044 This follows the general principle that `/etc' is the place for all local
2045 configuration files.
2047 * The C library header files now use `extern "C"' when used by the C++
2048 compiler, so the C library should now work with C++ code.
2050 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2051 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2052 in <strings.h>.)
2054 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2055 function which uses the `merge sort' algorithm, and is said to be
2056 significantly faster than the old GNU `qsort' function. Merge sort is
2057 now the standard `qsort' function. The new algorithm can require a lot
2058 of temporary storage; so, the old sorting function is called when the
2059 required storage is not available.
2061 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2062 provides the Unix `crypt' function, plus some other entry points.
2064 * The code and header files taken from 4.4 BSD have been updated with the
2065 latest files released from Berkeley.
2066 \f
2067 ----------------------------------------------------------------------
2068 Copyright information:
2070 Copyright (C) 1992-2009, 2010, 2011 Free Software Foundation, Inc.
2072 Permission is granted to anyone to make or distribute verbatim copies
2073 of this document as received, in any medium, provided that the
2074 copyright notice and this permission notice are preserved,
2075 thus giving the recipient permission to redistribute in turn.
2077 Permission is granted to distribute modified versions
2078 of this document, or of portions of it,
2079 under the above conditions, provided also that they
2080 carry prominent notices stating who last changed them.
2081 \f
2082 Local variables:
2083 version-control: never
2084 fill-column: 76
2085 End: