1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2012 Free Software Foundation, Inc.
3 See the end for copying conditions.
5 Please send GNU C library bug reports via <http://sources.redhat.com/bugzilla/>
6 using `glibc' in the "product" field.
10 * The following bugs are resolved with this release:
12 174, 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, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
20 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
21 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
22 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658,
23 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739,
24 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806,
25 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871,
26 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895,
27 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
28 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
29 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973,
30 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040,
31 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075,
32 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134,
33 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273, 14277,
36 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
37 configuring glibc with:
38 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
39 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
40 Implemented by H.J. Lu.
44 + define static_assert
48 + declare at_quick_exit and quick_exit also for ISO C11
50 + aligned_alloc. NB: The code is deliberately allows the size parameter
51 to not be a multiple of the alignment. This is a moronic requirement
52 in the standard but it is only a requirement on the caller, not the
57 + uchar.h support added
59 + CMPLX, CMPLXF, CMPLXL added
61 Implemented by Ulrich Drepper.
63 * Support for the IA-64 has been moved to ports.
65 * Remove support for anything but ELF binary format
67 * Checking versions of poll, ppoll added.
68 Implemented by Ulrich Drepper.
70 * More generic and 64-bit performance optimizations to math functions.
71 Implemented by Ulrich Drepper.
73 * New configure option --enable-obsolete-rpc makes the deprecated RPC
74 headers and functions available at compile time as they were before
75 version 2.14. This option will be removed at some time in the future
76 after the TI-RPC library becomes fully sufficient for the needs of
77 existing applications.
79 * Compatibility code for Linux kernel versions before 2.4 has been removed.
80 Note that glibc is not expected to work with any Linux kernel version
83 * New header <sys/auxv.h> and function getauxval allowing easy access to
84 the AT_* key-value pairs passed from the Linux kernel. The header also
85 defines the HWCAP_* bits associated with the AT_HWCAP key.
89 * New configure option --enable-systemtap builds SystemTap static probes
90 into libc for setjmp and longjmp and into libpthread for various operations.
91 So far the setjmp/longjmp probes and some of the libpthread probes are
92 provided only for i*86 and x86_64.
93 Implemented by Roland McGrath and Rayson Ho.
95 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
97 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
100 * More optimized functions for SPARC. Implemented by David S. Miller.
102 * Improved support for cross-compilation, especially bootstrap builds
103 without a previously built glibc.
105 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
106 Chris Metcalf from Tilera.
108 * Support for the old ARM ABI has been removed from ports. Only the EABI is
109 now supported for ARM processors.
111 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
112 as the name of the dynamic linker, to distinguish it from the
113 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
115 * Support for CRIS has been removed from ports.
117 * A new class of installed header has been documented for low-level
118 platform-specific functionality. PowerPC added the first instance with a
119 function to provide time base register access. Contributed by Tulio
120 Magno Quites Machado Filho.
122 * ix86 configurations now install header files that are consistent with
123 what x86-64 configurations install. These same header files can be used
124 for -m32, -m64, or -mx32 builds.
125 Contributed by H.J. Lu.
127 * Math library bug fixes. A thorough audit of all open math library bugs was
128 conducted by Joseph Myers. Significant progress was made on many math
129 library bugs resulting in more accurate exceptions and function results.
130 Many thanks to all those that contributed including Andreas Jaeger for his
131 patch review and work on the x87 trigonometric instruction issues.
133 * Timezone data is no longer installed. Timezone-related binaries and scripts
134 will continue to be installed. Users should obtain their timezone data from
135 their distribution provider or from the tzdata package at
136 <ftp://munnari.oz.au/pub/>.
140 * The following bugs are resolved with this release:
142 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
143 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
144 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
145 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
146 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
147 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
148 13484, 13506, 13515, 13523, 13524, 13538, 13540
150 * New program pldd to list loaded object of a process
151 Implemented by Ulrich Drepper.
153 * Add nss_db support back to glibc. No more dependency on Berkeley db
154 and support for initgroups lookups.
155 Implemented by Ulrich Drepper.
157 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
158 Contributed by HJ Lu.
160 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
161 Contributed by HJ Lu.
163 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
164 on x86-32 and x86-64.
165 Contributed by Liubov Dmitrieva.
167 * Optimized strchr and strrchr for SSE on x86-32.
168 Contributed by Liubov Dmitrieva.
170 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
171 for x86-64 and x86-32.
172 Contributed by Liubov Dmitrieva.
174 * New interfaces: scandirat, scandirat64
175 Implemented by Ulrich Drepper.
177 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
178 Implemented by Ulrich Drepper.
180 * nscd now also caches the netgroup database.
181 Implemented by Ulrich Drepper.
183 * Integrate libm with gcc's -ffinite-math-only option.
184 Implemented by Ulrich Drepper.
186 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
187 to math functions. Implemented by Ulrich Drepper.
189 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
190 Implemented by Ulrich Drepper.
192 * New Linux interfaces: process_vm_readv, process_vm_writev
194 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
195 Implemented by Ulrich Drepper.
197 * Optimized nearbyint and strcasecmp for PPC.
198 Implemented by Adhemerval Zanella.
200 * New locales: bho_IN, unm_US, es_CU, ta_LK
204 * The following bugs are resolved with this release:
206 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
207 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
208 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
209 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
210 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
211 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
212 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
213 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
214 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
215 12795, 12811, 12813, 12814, 12841
217 * The RPC implementation in libc is obsoleted. Old programs keep working
218 but new programs cannot be linked with the routines in libc anymore.
219 Programs in need of RPC functionality must be linked against TI-RPC.
220 The TI-RPC implementation is IPv6 enabled and there are other benefits.
222 Visible changes of this change include (obviously) the inability to link
223 programs using RPC functions without referencing the TI-RPC library and the
224 removal of the RPC headers from the glibc headers.
225 Implemented by Ulrich Drepper.
227 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
228 syncfs, setns, sendmmsg
230 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
231 yue_HK, lij_IT, mhr_RU
233 * New encodings: CP770, CP771, CP772, CP773, CP774
235 * New program sotruss to trace calls through PLTs
236 Implemented by Ulrich Drepper.
238 * The malloc hook implementation is marked deprecated and will be removed
239 from the default implementation in the next version. The design never
240 worked ever since the introduction of threads. Even programs which do
241 not create threads themselves can use multiple threads created internally.
245 * The following bugs are resolved with this release:
247 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
248 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
249 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
250 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
253 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
255 * POWER7 optimizations: memset, memcmp, strncmp
257 * New optimized string functions for x86-64: strnlen (SSE2),
258 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
259 Implemented by Ulrich Drepper.
263 * The following bugs are resolved with this release:
265 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
266 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
267 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
268 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
269 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
270 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
271 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
272 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
274 * New interfaces: pthread_getname_np, pthread_setname_np
276 * New Linux interface: recvmmsg
278 * STT_GNU_IFUNC implemented for Sparc by David Miller.
280 * The dynamic linker now recognizes supported ABI versions from the
281 EI_ABIVERSION field in the ELF header.
282 Implemented by Ulrich Drepper.
284 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
285 will not be used to fill in password fields in the passwd.byname replies.
286 Instead it is used to synthesize the shadow.byname table, should it be
287 missing. This is a useful mode in some installations involving Solaris.
288 Implemented by Ulrich Drepper.
290 * New locales: kok_IN, sq_MK, cv_RU
294 * The following bugs are resolved with this release:
296 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
297 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
298 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
299 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
300 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
301 10789, 10817, 10823, 10840, 10847
303 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
305 Implemented by Ulrich Drepper.
307 * Checking version of longjmp added that fails if an uninitialized stack
308 frame would be created. Implemented by Ulrich Drepper.
310 * STT_GNU_IFUNC is now supported in static executables.
311 Implemented by H.J. Lu.
313 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
315 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
316 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
317 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
318 Contributed by H.J. Lu.
320 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
321 Implemented by Ulrich Drepper.
323 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
325 Contributed by H.J. Lu.
327 * Support for fma instruction in AVX on x86-64.
328 Implemented by H.J. Lu and Ulrich Drepper.
330 * AVX support in x86-64 auditing support in ld.so.
331 Implemented by H.J. Lu.
333 * STB_GNU_UNIQUE support added.
334 Implemented by Ulrich Drepper.
336 * Implement second fallback mode for optimized DNS lookup for even more
337 broken environments. If two requests from the same port are not
338 handled correctly close the socket and open a new one before sending
339 the second request. The 'single-request-reopen' option in /etc/resolv.conf
340 can be used to select this mode right away, instead of rediscovering the
341 necessity is every process again.
342 Implemented by Ulrich Drepper.
344 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
345 Implemented by Adam Tkac.
347 * Optimized iconv conversions for S390x.
348 Implemented by Andreas Krebbel.
350 * Using condvars with PI mutexes is now more efficient due to kernel
351 support for requeueing to PI futexes. NPTL support added for x86-64.
352 Implemented by Ulrich Drepper.
354 * New locales: ps_AF, my_MM
358 * The following bugs are resolved with this release:
360 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
361 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
362 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
363 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
364 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
366 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
367 Implemented by Ulrich Drepper.
369 * New Linux interfaces: accept4, fallocate, fallocate64.
370 Implemented by Ulrich Drepper.
372 * Correct declarations of string function when used in C++ code. This
373 could lead to compile errors for invalid C++ code.
375 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
378 * New POSIX 2008 interface: psiginfo
379 Implemented by Ulrich Drepper.
381 * New ISO C++1x interfaces: quick_exit, at_quick_exit
382 Implemented by Ulrich Drepper.
384 * Support for selecting between multiple function definitions at runtime
385 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
387 * The libcrypt library can now use the hash function implementations in
388 NSS. Implemented by Ulrich Drepper.
390 * The malloc implementation can be compiled to be less memory efficient
391 but higher performing in multi-threaded programs.
392 Implemented by Ulrich Drepper.
394 * New locales: nan_TW@latin, ks_IN
396 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
397 Implemented by Ulrich Drepper.
399 * Extended printf hook support. It is possible to use user-defined types
400 and extend existing format specifiers.
401 Implemented by Ulrich Drepper.
403 * Handling for group shadow files has been added.
404 Implemented by Ulrich Drepper.
406 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
407 servers (the case, e.g., for some people using the built-in DNS
408 server in ADSL modems/routers). There is a once-per-process timeout
409 in case of a broken server. To avoid it, users can run nscd or put
410 'options single-request' in /etc/resolv.conf.
411 Implemented by Ulrich Drepper.
415 * The following bugs are resolved with this release:
417 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
418 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
419 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
420 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
421 6968, 6974, 6980, 6995, 7008, 7009, 7029
423 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
424 up at the same time. Implemented by Ulrich Drepper.
426 * TLS descriptors for LD and GD on x86 and x86-64.
427 Implemented by Alexandre Oliva.
429 * getaddrinfo now handles DCCP and UDPlite.
430 Implemented by Ulrich Drepper.
432 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
433 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
434 Implemented by Ulrich Drepper.
436 * New implementation of memmem, strstr, and strcasestr which is O(n).
437 Implemented by Eric Blake.
439 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
441 * Implement "e" option for popen to open file descriptor with the
442 close-on-exec flag set. Implemented by Ulrich Drepper.
444 * Implement "b" mode for fmemopen. In this mode writes writes don't
445 implicitly add a NUL byte and seeks from the end of the buffer really
446 use the buffer end, not the string length as the basis.
447 Implemented by Ulrich Drepper.
449 * Many functions, exported and internal, now atomically set the close-on-exec
450 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
452 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
454 Implemented by Pravin Satpute.
456 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
460 * The following bugs are resolved with this release:
462 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
463 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
464 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
465 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
466 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
467 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
468 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
470 * New locales: bo_CN, bo_IN, shs_CA.
472 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
474 * Sorting rules for some Indian languages (Devanagari and Gujarati).
475 Implemented by Pravin Satpute.
477 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
479 * nscd caches now all timeouts for DNS entries
480 Implemented by Ulrich Drepper.
482 * nscd is more efficient and wakes up less often.
483 Implemented by Ulrich Drepper.
485 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
486 vdprintf, and obstack_vprintf.
487 Implemented by Jakub Jelinek.
489 * Faster memset for x86-64.
490 Implemented by Harsha Jagasia and H.J. Lu.
492 * Faster memcpy on x86.
493 Implemented by Ulrich Drepper.
495 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
496 Implemented by Ulrich Drepper.
498 * Faster sqrt and sqrtf implemention for some PPC variants.
499 Implemented by Steven Munroe.
503 * The following bugs are resolved with this release:
505 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
506 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
507 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
508 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
509 5071, 5103, 5104, 5112, 5113, 5184, 5186
511 * More checking functions: fread, fread_unlocked, open*, mq_open.
512 Implemented by Jakub Jelinek and Ulrich Drepper.
514 * Extend fortification to C++. Implemented by Jakub Jelinek.
516 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
517 by not recognizing 'a' as a modifier when those specs are requested.
518 Implemented by Jakub Jelinek.
520 * PPC optimizations to math and string functions.
521 Implemented by Steven Munroe.
523 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
524 options to be passed. Implemented by Ulrich Drepper.
526 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
528 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
529 Implemented by Ulrich Drepper.
531 * Handle private futexes in the NPTL implementation.
532 Implemented by Jakub Jelinek and Ulrich Drepper.
534 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
535 Implemented by Roland McGrath and Ulrich Drepper.
537 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
539 * SHA-256 and SHA-512 based password encryption.
540 Implemented by Ulrich Drepper.
542 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
543 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
546 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
547 Implemented by Ulrich Drepper.
551 * The following bugs are resolved with this release:
553 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
554 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
555 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
556 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
557 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
558 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
559 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
562 * New Linux interfaces: epoll_pwait, sched_getcpu.
564 * New generic interfaces: strerror_l.
566 * nscd can now cache the services database. Implemented by Ulrich Drepper.
570 * The following bugs are resolved with this release:
572 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
573 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
574 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
575 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
576 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
577 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
578 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
579 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
580 3225, 3251, 3252, 3253, 3273
582 * For Linux, the sorting of addresses returned by getaddrinfo now also
583 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
584 Implemented by Ulrich Drepper.
586 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
587 Implemented by Ulrich Drepper.
589 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
591 * New iconv module for MIK. Contributed by Alexander Shopov.
593 * For sites with broken group and/or passwd database, the auto-propagate
594 option of nscd can prevent creating ID lookup entries from the results
595 of a name lookup and vice versa. This usually is no problem but some
596 site might have problems with the default behavior.
597 Implemented by Ulrich Drepper.
599 * Iterating over entire database in NIS can be slow. With the
600 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
601 to trade time for memory. The entire database will be read at once.
602 Implemented by Ulrich Drepper.
604 * The interfaces introduced in RFC 3542 have been implemented by
607 * Support for the new ELF hash table format was added by Ulrich Drepper.
609 * Support for priority inheritance mutexes added by Jakub Jelinek and
612 * Support for priority protected mutexes added by Jakub Jelinek.
614 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
615 or_IN, csb_PL, fy_NL, sr_ME.
619 * More overflow detection functions.
621 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
622 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
624 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
625 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
626 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
627 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
628 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
629 by Masahide Washizawa.
631 * It is now possible to install audit libraries for the dynamic linker using
632 LD_AUDIT. Implemented by Ulrich Drepper.
634 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
635 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
636 For a libc and libpthread that works well on Linux 2.4 kernels, we
637 recommend using the stable 2.3 branch.
639 * The new function open_wmemstream acts like open_memstream,
640 but uses a wchar_t wide character buffer.
642 * The new function ppoll is an improved version of poll, similar to pselect.
644 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
645 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
646 renameat, unlinkat, linkat, symlinkat, readlinkat.
648 * New Linux kernel system calls: unshare,
649 inotify_init, inotify_add_watch, inotify_rm_watch.
651 * The euidaccess function is now also known by the alias eaccess,
652 for compatibility with some other systems.
654 * Timezone data updated to 2006b version.
658 * The following bugs are resolved with this release:
660 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
661 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
662 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
663 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
664 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
665 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
667 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
669 * As of this release, GCC 4 can be used to compile the C Library.
671 * Timezone data updated to 2005m version.
675 * The following bugs are resolved with this release:
677 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
678 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
679 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
680 777, 787, 821, 822, 823, 825
682 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
686 * Support for RFC 3678. Real implementations exist only for Linux so far.
687 Implemented by Ulrich Drepper.
689 * nscd can now cache entries persistently. Expiring entries are reloaded.
690 For speedups the cache can be shared in memory with client processes.
691 Implemented by Ulrich Drepper.
693 * nscd can now perform SELinux checks.
694 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
696 * getaddrinfo queries are now cached. Canonical name lookup is performed
698 Implemented by Ulrich Drepper.
700 * The nothrow function attribute is used when headers are used by gcc when
701 compiling C code. This can avoid significant amounts of exception
704 * The malloc functions perform more error checking and are stricter when
705 it comes to reacting on errors. The default action is to terminate
706 the process after showing an error message. Implemented by Ulrich Drepper.
708 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
709 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
711 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
712 namespaces using the new function dlmopen(). This feature is of course,
713 like most other dynamic loading functionality, not available in statically
714 linked applications. Implemented by Ulrich Drepper.
716 * Low-overhead boundary checking variants of string and some stdio functions
717 were added. These are to be used in conjunction with a gcc patch by
718 Jakub Jelinek which adds calls to these functions if possible.
719 Implemented by Jakub Jelinek and Ulrich Drepper.
721 * Old code for several operating systems and machine architectures that
722 have not been in working condition in a long time have been removed from
723 the main source tree maintained by the GNU C Library's maintainers.
724 These files are now reside in the separate `ports' source module
725 that is usable as an add-on when building the library.
729 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
730 interrogate the dynamic linker, compatible with the Solaris interface.
732 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
733 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
735 * getifaddrs now uses the netlink interface on Linux to get its information.
736 Implemented by Thorsten Kukuk.
738 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
739 Implemented by Ulrich Drepper.
741 * support for non-executable stacks on x86 has been added. Changes mostly
744 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
747 * getaddrinfo now performs destination address selection according to
752 * Thread-safe interfaces for many functions that access locale data
753 were added in version 2.3, but these features were omitted from NEWS.
754 Many functions have variants with an `_l' suffix that take a `locale_t'
755 object as a parameter rather than consulting the current locale.
756 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
757 create and maintain `locale_t' objects. Additionally, the new function
758 `uselocale' sets "the current locale" (as used by functions not so
759 parameterized) set for an individual thread. These features were added
760 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
762 * The functions getresuid, getresgid, setresuid, and setresgid, which
763 have long been available on Linux, are now declared in <unistd.h>
764 and are now also available on the Hurd.
766 * ELF thread-local storage support (TLS) now works on x86-64.
768 * The new dynamic string token $LIB is expanded in shared library names.
769 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
771 * Aldy Hernandez contributed complete software floating point support for
772 PowerPC machines with no FPU.
774 * fexecve is implemented on Linux.
776 * The `btowc' function should work at least twice as fast due to
777 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
779 * With approriate thread add-ons cancelable functions are now implemented
780 in libc.so as well. No need to call the function in libpthread. This
781 change allowed to finally disable the incorrect and expensive handling
782 of weak definition in ld.so.
784 * Yet more PLT entries in libc.so have been removed. We finally arrived
785 at the bare minimum. Startup times improved appropriately.
787 * Support for the new Linux/x86 system call interface was added. The
788 AT_SYSINFO auxiliary vector entry is recognized and handled.
792 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
795 * iconv (the program and the interface) now accepts empty names (excluding
796 options like //TRANSLIT) to mean "use charset of current locale".
798 * localedef can now transliterate characters in strings which are not in
799 the provided charmap. The information from the input locale is used.
801 * Prelinking support was added for ELF targets. This requires additional
802 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
804 * Read-only stdio streams now use mmap to speed up operation by eliminating
805 copying and buffer underflows. To use add 'm' to the mode string of
806 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
808 * The malloc functions were completely rewritten by Wolfram Gloger based
809 on Doug Lea's malloc-2.7.0.c.
811 * Isamu Hasegawa contributed a completely new and POSIX-conformant
812 implementation of regex.
814 * Bruno Haible upgraded the iconv and locale implementation to support
817 * Contents of the LC_* and LANG environment variables in the CEN style are
818 not recognized anymore. It never was used. Change by Ulrich Drepper.
820 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
821 thread-local storage (TLS) ABI on some platforms.
822 Changes by Ulrich Drepper. SH support by Kaz Kojima.
824 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
825 EUC-JISX0213, and TSCII.
827 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
828 BSD-compatible interface for getting all network interface addresses.
829 Implementation for IPv4 by Roland McGrath.
831 * Loading of locale data is faster due to the introduction of a locale
832 archive. Implemented by Roland McGrath and Ulrich Drepper.
834 * Startup times are significantly reduced by not using exported functions
835 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
838 * Steven Munroe contributed a port to PowerPC64/Linux.
842 * The Hurd now uses the GNU libio implementation of stdio rather than the
843 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
845 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
846 with the same behavior as the Linux system call of the same name.
850 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
851 128-bit long double format.
853 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
854 IBM1161, and IBM1162 charsets.
856 * Andreas Jaeger contributed a port to x86-64/Linux.
858 * Peter Bruin contributed a port to PowerPC/Hurd.
860 * libc functions using I/O streams now can handle wide-oriented streams
863 * optimizations in the dynamic linker. Binaries created by recent binutils
864 versions start up quicker due to reduced time spent on relocations.
866 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
870 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
871 asinh, atanh, j0 for the 128-bit long double format.
873 * Bruno Haible updated all the code handling Unicode in some form to
876 * Speed of regex for single-byte locales is back to previous levels.
877 Patch by Isamu Hasegawa.
879 * Alpha, SPARC, and IA-64 now also using floating stacks.
881 * Startup time of internationalized applications greatly improved through
882 iconv cache. Use iconvconfig to generate the cache file.
883 Contributed by Ulrich Drepper.
885 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
886 severe performance problems. Patch by David Mosberger.
888 * The Hurd port got a lot more functionality like AIO, various stdio
889 extensions, etc. Mainly done by Roland McGrath.
891 * mtrace can now lookup symbols in shared libraries.
895 * Intel's IA-64 math library is largely integrated. It provides fast and
896 accurate implementatations for most basic and standard math functions
897 in float, double, and long double format.
899 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
900 and asin for the 96-bit long double format and asin, log, tan for the
901 128-bit long double format.
903 * The beginning of a last-bit accurate math library by IBM Haifa were added.
904 The basic double functions exist today. Contributed by Abraham Ziv
905 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
906 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
908 * An asynchronous name lookup library was added. The interface is designed
909 after POSIX AIO. The proposal was circulated beforehand to get comments.
910 No negative ones came in. Implemented by Ulrich Drepper.
912 * Port to S390/64bit contributed by Martin Schwidefsky
913 <schwidefsky@de.ibm.com>.
915 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
916 of functions for Linux/IA-64.
918 * The RPC code is now thread safe. Threads can now use the same service
919 of different services at the same time. Patch by Eric Norum
920 <eric.norum@usask.ca> with some help by Ulrich Drepper.
922 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
923 family of functions for Linux/S390.
925 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
926 of functions for Linux/x86.
928 * Port to Linux/CRIS contributed by Axis Communications.
932 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
933 we can now check for namespace violations and missing declarations. The
934 result is that almost all headers are now Unix-compliant (as defined in
935 the upcoming XPG6). The negative side is that some programs might need
936 corrections, too, if they depend on the incorrect form of the headers in
937 previous versions which defined too many symbols and included too many
940 * regex now handles multibyte character sets correctly.
941 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
943 * iconv (the program) does now conform to the upcoming XPG6 and handles
944 charmaps. Instead of the charset names the path of charmaps can be
945 provided and the conversion happens based on this data.
946 Contributed by Ulrich Drepper.
948 * The locale program now provides detailed information about the installed
953 only lists the names of the supported locales
957 provides details such as country, language, and codeset name.
958 Contributed by Ulrich Drepper.
962 * The gencat program now parses the input file according to the charset
963 selected by the LC_CTYPE category. This is important for stateful
964 character sets. To make generating catalogs easier there is a way
965 to overwrite the charset selected by the locale: before the first
966 message or $ quote line the catalog can contain a line like
970 to select the charset (ISO-8859-2 in this case).
972 Implemented by Shinya Hanataka and Ulrich Drepper.
974 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
975 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
976 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
978 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
979 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
981 * The LANGUAGE environment variable is now ignored unless the locale is
982 changed from the default "C" locale.
984 * The usual bug fixes.
988 * Greg McGary added runtime support for bounds checking using gcc's
989 new -fbounded-pointers option. ix86 target is complete. PowerPC
992 * Thorsten Kukuk added secure mode support to nscd.
994 * The Berkeley db libraries have been removed.
996 Related, the nss_db module is now in a separate package since it
997 obviously requires a database library being available.
999 * Wide character I/O streams implemented by Ulrich Drepper.
1001 * Functions from the extended socket API added by Ulrich Drepper.
1003 * Functions feenableexcept and fedisableexcept to control the
1004 behaviour of individual exceptions have been added by Andreas Jaeger.
1006 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1008 * The resolver code has been updated from bind 8.2.3-T5B which supports
1009 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1012 This change could in some situations effect backward compatibility. Since
1013 now `_res' is a thread-local instead of a global variable, modifying it
1014 in one thread does not have any effect in other threads.
1016 The resolver library was also extended to allow IPv6 as the transport
1017 protocol for the requests. This work was done by Stig Venaas.
1019 * Compatibility code for K&R C compilers has been removed from the
1020 header files. A ISO C compiler is needed to use the library
1021 (conforming to either C89 or C99 standard).
1023 * Complete rewrite of the localedef program to support multibyte character
1024 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1025 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1026 Implemented by Ulrich Drepper.
1028 Bruno Haible significantly improved the generation and use of the data
1029 structures for the wide character tables.
1031 * Plural handling in gettext implemented by Ulrich Drepper.
1033 * The utmp daemon has been removed.
1035 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1037 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1040 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1042 * POSIX barriers implemented by Kaz Kylheku.
1044 * POSIX spawn function family implemented by Ulrich Drepper.
1046 * POSIX spinlocks are now available.
1048 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1050 * the configure option --enable-kernel=X.Y.Z allows to strip out
1051 compatibility for kernel versions before X.Y.Z. This is currently only
1052 implemented for Linux.
1054 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1055 field sin6_scope_id. This means that all programs using IPv6 should be
1056 recompiled. Don't expect binary compatibility with previous glibc
1059 * various conversion modules for IBM character sets contributed by
1062 * IA-64 port by Jes Sorensen and HJ Lu.
1076 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1078 * New xdr functions are added; some rpc functions are now 64bit clean.
1080 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1082 * Fixed known incompatibilities with glibc 2.0.
1084 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1086 * Optimized a number of functions (especially the ELF dynamic loader).
1088 * Update timezone data files.
1090 * lots of charmaps corrections
1092 * some new locale definitions and charmaps
1097 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1098 conform to POSIX member type requirements. Symbol versions have been
1099 adjusted as needed within the library, and for direct use by applications,
1100 but there is potential for problems if third-party libraries use
1101 struct timeval as part of their interface. This does not present
1102 a problem for X and other "essential" system libraries.
1104 * An additional locale model to support C++ Standard Library locale
1105 model and probably more was implemented by Ulrich Drepper.
1107 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1110 * Miles Bader provided the `argp' function family to support hierachical
1111 command line argument parsing, layered on top of getopt.
1113 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1115 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1118 * scanf recognizes the %a and %A format for scanning floating point numbers.
1120 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1121 information and interfaces for the available integer types.
1123 * about 130 new math functions were added to implement the ISO C9x math
1126 * the new header <complex.h> contains definitions of the complex math
1127 functions from ISO C 9X.
1129 * the new header <tgmath.h> defines generic macros to use complex or
1130 real valued functions.
1132 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1134 * Andreas Jaeger provided a test suite for the math library.
1136 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1138 * Ulrich Drepper added character set conversion functions (iconv).
1140 * Optimized string functions have been added.
1142 * The localedata addon is now part of glibc.
1144 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1146 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1147 daemon for NSS (nscd).
1149 Missing a better place here are some numbers on improvements. Under
1150 Linux 2.1.125 un-tar-ing the kernel sources takes
1154 using local files 12.19s 6.88s 22.91s
1156 using NIS 13.92s 8.91s 26.34s
1158 using NIS & nscd 10.37s 7.34s 25.30s
1160 using NIS+ 27.57s 30.37s 640.46s
1162 using NIS+ & nscd 10.25s 7.83s 26.51s
1164 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1166 Keep in mind that non-namelookup related operations dominate above times.
1167 It was just a common complain that using NIS+ unpacking the kernel is
1170 [1] The old nscd implementation is not available anymore since it was
1171 distributed with glibc up to version 2.0.98 and thus is now replaced.
1173 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1175 * Mark Kettenis provided a Hesiod NSS module.
1177 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1178 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1180 * rcmd can now handle netgroups (Dick Streefland).
1182 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1185 * Support for the IPv6 protocol has been added to the socket API, as per the
1186 latest draft standards.
1188 * Support for Linux 2.2 has been added.
1190 * Interface changes relative to the latest 2.0.x release:
1191 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1192 addseverity NEW: Unix98
1193 alphasort64 NEW: LFS
1194 argp_err_exit_status NEW: argp, GNU ext
1195 argp_error NEW: argp, GNU ext
1196 argp_failure NEW: argp, GNU ext
1197 argp_help NEW: argp, GNU ext
1198 argp_parse NEW: argp, GNU ext
1199 argp_program_bug_address NEW: argp, GNU ext
1200 argp_program_version NEW: argp, GNU ext
1201 argp_program_version_hook NEW: argp, GNU ext
1202 argp_state_help NEW: argp, GNU ext
1203 argp_usage NEW: argp, GNU ext
1204 authdes_create NEW: Secure RPC
1205 authdes_getucred NEW: Secure RPC
1206 authdes_pk_create NEW: Secure RPC
1207 backtrace NEW: GNU ext.
1208 backtrace_symbols NEW: GNU ext.
1209 backtrace_symbols_fd NEW: GNU ext.
1211 cacosf NEW: ISO C 9x
1212 cacosh NEW: ISO C 9x
1213 cacoshf NEW: ISO C 9x
1214 cacoshl NEW: ISO C 9x
1215 cacosl NEW: ISO C 9x
1222 casinf NEW: ISO C 9x
1223 casinh NEW: ISO C 9x
1224 casinhf NEW: ISO C 9x
1225 casinhl NEW: ISO C 9x
1226 casinl NEW: ISO C 9x
1228 catanf NEW: ISO C 9x
1229 catanh NEW: ISO C 9x
1230 catanhf NEW: ISO C 9x
1231 catanhl NEW: ISO C 9x
1232 catanl NEW: ISO C 9x
1233 cbc_crypt NEW: Secure RPC
1237 ccoshf NEW: ISO C 9x
1238 ccoshl NEW: ISO C 9x
1244 cimagf NEW: ISO C 9x
1245 cimagl NEW: ISO C 9x
1246 clearerr_locked REMOVED
1247 clntunix_create NEW: sunrpc ext
1249 clog10 NEW: ISO C 9x
1250 clog10f NEW: ISO C 9x
1251 clog10l NEW: ISO C 9x
1261 cprojf NEW: ISO C 9x
1262 cprojl NEW: ISO C 9x
1264 crealf NEW: ISO C 9x
1265 creall NEW: ISO C 9x
1270 csinhf NEW: ISO C 9x
1271 csinhl NEW: ISO C 9x
1274 csqrtf NEW: ISO C 9x
1275 csqrtl NEW: ISO C 9x
1279 ctanhf NEW: ISO C 9x
1280 ctanhl NEW: ISO C 9x
1282 des_setparity NEW: Secure RPC
1283 ecb_crypt NEW: Secure RPC
1284 endutxent NEW: Unix98
1286 exp10f NEW: ISO C 9x
1287 exp10l NEW: ISO C 9x
1291 fattach NEW: STREAMS
1292 fdetach NEW: STREAMS
1296 feclearexcept NEW: ISO C 9x
1297 fegetenv NEW: ISO C 9x
1298 fegetexceptflag NEW: ISO C 9x
1299 fegetround NEW: ISO C 9x
1300 feholdexcept NEW: ISO C 9x
1302 feraiseexcept NEW: ISO C 9x
1303 ferror_locked REMOVED
1304 fesetenv NEW: ISO C 9x
1305 fesetexceptflag NEW: ISO C 9x
1306 fesetround NEW: ISO C 9x
1307 fetestexcept NEW: ISO C 9x
1308 feupdateenv NEW: ISO C 9x
1309 fflush_locked REMOVED
1313 fgets_unlocked NEW: GNU ext.
1314 fileno_locked REMOVED
1326 fputc_locked REMOVED
1327 fputs_unlocked NEW: GNU ext.
1328 fread_unlocked NEW: GNU ext.
1333 fstatvfs NEW: Unix98
1337 ftruncate64 NEW: LFS
1339 fwrite_unlocked NEW: GNU ext.
1340 gai_strerror NEW: IPv6
1344 getchar_locked REMOVED
1346 getdate_err NEW: Unix98
1347 getdate_r NEW: GNU ext.
1349 getnameinfo NEW: IPv6
1350 getnetname NEW: Secure RPC
1351 getpmsg NEW: STREAMS
1352 getpt NEW: Unix98 PTY
1353 getrlimit64 NEW: LFS
1354 getutxent NEW: Unix98
1355 getutxid NEW: Unix98
1356 getutxline NEW: Unix98
1357 glob64 NEW: GNU ext.
1358 globfree64 NEW: GNU ext.
1359 gnu_get_libc_release NEW: GNU ext.
1360 gnu_get_libc_version NEW: GNU ext.
1361 grantpt NEW: Unix98 PTY
1362 host2netname NEW: Secure RPC
1364 iconv_close NEW: iconv
1365 iconv_open NEW: iconv
1366 if_freenameindex NEW: IPv6
1367 if_indextoname NEW: IPv6
1368 if_nameindex NEW: IPv6
1369 if_nametoindex NEW: IPv6
1370 in6addr_any NEW: IPv6
1371 in6addr_loopback NEW: IPv6
1372 inet6_isipv4mapped NEW: IPv6
1373 isastream NEW: STREAMS
1374 iswblank NEW: GNU ext.
1375 key_decryptsession NEW: Secure RPC
1376 key_decryptsession_pk NEW: Secure RPC
1377 key_encryptsession NEW: Secure RPC
1378 key_encryptsession_pk NEW: Secure RPC
1379 key_gendes NEW: Secure RPC
1380 key_get_conv NEW: Secure RPC
1381 key_secretkey_is_set NEW: Secure RPC
1382 key_setnet NEW: Secure RPC
1383 key_setsecret NEW: Secure RPC
1384 llrint NEW: ISO C 9x
1385 llrintf NEW: ISO C 9x
1386 llrintl NEW: ISO C 9x
1387 llround NEW: ISO C 9x
1388 llroundf NEW: ISO C 9x
1389 llroundl NEW: ISO C 9x
1394 lrintf NEW: ISO C 9x
1395 lrintl NEW: ISO C 9x
1396 lround NEW: ISO C 9x
1397 lroundf NEW: ISO C 9x
1398 lroundl NEW: ISO C 9x
1400 makecontext NEW: Unix98
1401 mempcpy NEW: GNU ext.
1404 modify_ldt NEW: kernel
1408 nearbyint NEW: ISO C 9x
1409 nearbyintf NEW: ISO C 9x
1410 nearbyintl NEW: ISO C 9x
1411 netname2host NEW: Secure RPC
1412 netname2user NEW: Secure RPC
1413 nexttoward NEW: ISO C 9x
1414 nexttowardf NEW: ISO C 9x
1415 nexttowardl NEW: ISO C 9x
1419 passwd2des NEW: Secure RPC
1421 pow10f NEW: GNU ext.
1422 pow10l NEW: GNU ext.
1425 printf_size NEW: GNU ext.
1426 printf_size_info NEW: GNU ext.
1427 profil_counter REMOVED
1428 pthread_mutexattr_getkind_np REPLACED
1429 pthread_mutexattr_setkind_np REPLACED
1430 ptsname NEW: Unix98 PTY
1431 ptsname_r NEW: Unix98 PTY
1433 putchar_locked REMOVED
1434 putgrent NEW: GNU ext.
1436 putpmsg NEW: STREAMS
1437 pututxline NEW: Unix98
1441 readdir64_r NEW: LFS
1442 remquo NEW: ISO C 9x
1443 remquof NEW: ISO C 9x
1444 remquol NEW: ISO C 9x
1446 roundf NEW: ISO C 9x
1447 roundl NEW: ISO C 9x
1449 scalbln NEW: ISO C 9x
1450 scalblnf NEW: ISO C 9x
1451 scalblnl NEW: ISO C 9x
1453 sendfile NEW: kernel
1454 setcontext NEW: Unix98
1455 setrlimit64 NEW: LFS
1456 setutxent NEW: Unix98
1458 sigignore NEW: Unix98
1459 sigqueue NEW: POSIX.1b
1460 sigrelse NEW: Unix98
1461 sigset NEW: POSIX.1b
1462 sigtimedwait NEW: POSIX.1b
1463 sigwaitinfo NEW: POSIX.1b
1464 sincos NEW: GNU ext.
1465 sincosf NEW: GNU ext.
1466 sincosl NEW: GNU ext.
1470 strcasestr NEW: GNU ext.
1471 strtoimax NEW: ISO C 9x
1472 strtoumax NEW: ISO C 9x
1473 strverscmp NEW: GNU ext.
1474 svcauthdes_stats NEW: Secure RPC
1475 svcunix_create NEW: sunrpc etx
1476 svcunixfd_create NEW: sunrpc ext
1477 swapcontext NEW: Unix98
1478 tcgetsid NEW: Unix98 PTY
1479 tdestroy NEW: GNU ext.
1480 tgamma NEW: ISO C 9x
1481 tgammaf NEW: ISO C 9x
1482 tgammal NEW: ISO C 9x
1486 truncf NEW: ISO C 9x
1487 truncl NEW: ISO C 9x
1489 unlockpt NEW: Unix98 PTY
1490 updwtmpx NEW: Unix98
1491 user2netname NEW: Secure RPC
1492 utmpxname NEW: Unix98
1493 versionsort NEW: GNU ext.
1494 versionsort64 NEW: GNU ext.
1496 wcscasecmp NEW: GNU ext.
1497 wcsncasecmp NEW: GNU ext.
1498 wcsnlen NEW: GNU ext.
1499 wcstoimax NEW: ISO C 9x
1500 wcstoll NEW: ISO C 9x
1501 wcstoull NEW: ISO C 9x
1502 wcstoumax NEW: ISO C 9x
1504 wordexp NEW: POSIX.2
1505 wordfree NEW: POSIX.2
1506 write_profiling REMOVED
1507 xdecrypt NEW: Secure RPC
1508 xdr_authdes_cred NEW: Secure RPC
1509 xdr_authdes_verf NEW: Secure RPC
1510 xdr_cryptkeyarg NEW: Secure RPC
1511 xdr_cryptkeyarg2 NEW: Secure RPC
1512 xdr_cryptkeyres NEW: Secure RPC
1513 xdr_getcredres NEW: Secure RPC
1514 xdr_key_netstarg NEW: Secure RPC
1515 xdr_key_netstres NEW: Secure RPC
1516 xdr_keybuf NEW: Secure RPC
1517 xdr_keystatus NEW: Secure RPC
1518 xdr_netnamestr NEW: Secure RPC
1519 xdr_sizeof NEW: Secure RPC
1520 xdr_unixcred NEW: sunrpc ext
1521 xencrypt NEW: Secure RPC
1522 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1533 * inet_ntoa is thread-safe
1535 * updwtmp is moved from libutil to libc
1537 * rewrite of cbrt function
1539 * update of timezone data
1553 * add atoll function
1555 * fix complex problems in Berkeley DB code
1557 * fix math functions
1561 * fixed lots of header problems (especially Linux/GNU specific)
1563 * dynamic loader preserves all registers
1565 * Roland McGrath provided support for handling of auxiliary objects in
1566 the ELF dynamic loader.
1568 * support for parallel builds is improved
1572 * GNU extensions are no longer declared by default. To enable them you
1573 must define the macro `_GNU_SOURCE' in your program or compile with
1576 * The library has changed from using GNU ld symbol aliases to using weak
1577 symbols where available. The ELF object file format supports weak
1578 symbols; GNU ld also supports weak symbols in the a.out format. (There
1579 is also now support for other GNU ld extensions in ELF. Use the
1580 `--with-elf' option to configure to indicate you have ELF, and
1581 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1582 of many files which contained only symbol aliases, reducing the size of
1583 the source and the compiled library; many other files were renamed to
1584 less cryptic names previously occupied by the symbol alias files.
1585 There is a new header file <elf.h> for programs which operate on
1586 files in the ELF format.
1588 * Converted to Autoconf version 2, so `configure' has more options.
1589 Run `configure --help' to see the details.
1591 * The library can now be configured to build profiling, highly-optimized
1592 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1593 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1594 `configure' enable building these extra libraries. The shared library is
1595 built by default when using both ELF and GNU ld. When shared libraries
1596 are enabled, the new library `-ldl' is available for arbitrary run-time
1597 loading of shared objects; its interface is defined in <dlfcn.h>. The
1598 new header file <link.h> gives access to the internals of the run-time
1599 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1600 application of same name on other systems and it provides information
1601 about dynamically linked binaries.
1603 * The C library now provides the run-time support code for profiling
1604 executables compiled with `-pg'. Programs can control the profiling code
1605 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1606 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1607 the support for this file format was contributed by David Mosberger-Tang.
1609 * The math code has been replaced with a math library based on fdlibm from
1610 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1611 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1612 functions. The math functions now reside in a separate library, so
1613 programs using them will need to use `-lm' their linking commands.
1615 * John C. Bowman contributed optimized ix87 assembler inline functions.
1617 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1618 mechanism similar to that found in Solaris 2. This is now used for the
1619 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1620 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1621 file controls what services are used for each individual database. This
1622 works by loading shared libraries with names specified in `nsswitch.conf',
1623 so service modules can be changed or added at any time without even
1624 relinking any program. Currently there are the file, db, and NIS based
1625 NSS services available.
1627 * The new functions `strtoq' and `strtouq' parse integer values from
1628 strings, like `strtol' and `strtoul', but they return `long long int' and
1629 `unsigned long long int' values, respectively (64-bit quantities).
1631 * The new functions `strtof' and `strtold' parse floating-point values from
1632 strings, like `strtod', but they return `float' and `long double' values,
1633 respectively (on some machines `double' and `long double' are the same).
1635 * Ulrich Drepper has contributed new implementations of the floating-point
1636 printing and reading code used in the `printf' family of functions and
1637 `strtod', `strtof', and `strtold'. These new functions are perfectly
1638 accurate, and much faster than the old ones.
1640 * The implementation of the POSIX locale model was completely rewritten by
1641 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1642 to compile the POSIX locale definition.
1644 * The former dummy implementations of the strcoll and strxfrm function are
1645 now replaced by fully functional code contributed by Ulrich Drepper. The
1646 collation information comes from the POSIX locale definitions.
1648 * The new header <langinfo.h> defines an interface for accessing
1649 various locale-dependent data (using the locale chosen with `setlocale').
1651 * Ulrich Drepper has contributed a new suite of functions for operation on
1652 wide-character and multibyte-character strings, in <wchar.h>;
1653 and classification and case conversion of wide characters, in <wctype.h>.
1654 These new functions are conforming to the ISO C, Amendement 1 specification.
1656 * There is now a second implementation of the standard I/O library available.
1657 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1658 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1660 * You can now use positional parameter specifications in format strings
1661 for the `printf' and `scanf' families of functions. For example,
1662 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1663 ``Number 6, Mr Jones''. This is mainly useful when providing different
1664 format strings for different languages, whose grammars may dictate
1665 different orderings of the values being printed. To support this
1666 feature, the interface for `register_printf_handler' has changed; see
1667 the header file <printf.h> for details.
1669 * The `printf' and `scanf' families of functions now understand a new
1670 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1671 to group numbers as indicated by the locale; for `scanf' and friends, this
1672 says to accept as valid only a number with all the proper grouping
1673 separators in the right places. In the default "C" locale, numbers are
1674 not grouped; but locales for specific countries will define the usual
1675 conventions (i.e. separate thousands with `,' in the US locale).
1677 * The pgrp functions have been regularized, slightly incompatibly but much
1678 less confusingly. The core functions are now `getpgid' and `setpgid',
1679 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1680 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1681 provided for compatibility. There is no longer an incompatible `getpgrp'
1682 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1684 * The new header file <fts.h> and suite of functions simplify programs that
1685 operate on directory trees. This code comes from 4.4 BSD.
1687 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1688 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1689 NSS scheme used in glibc.
1691 * There is a new malloc debugging hook `__memalign_hook'.
1693 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1694 `unsigned int' in <sys/types.h>. These are for compatibility only and
1695 their use is discouraged.
1697 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1698 done differently, so that it works even without GNU ld.
1700 * New function `euidaccess' checks allowed access to a file like `access',
1701 but using the effective IDs instead of the real IDs.
1703 * The time zone data files have been updated for the latest and greatest
1704 local time conventions of the countries of the world.
1706 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1709 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1710 for formatting floating-point numbers. They are provided only for
1711 compatibility; new programs should use `sprintf' instead. There are
1712 also equivalent function for the `long double' floating-point type and
1713 all functions also exist in a reentrant form.
1715 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1716 functions for maintaining the login-record files (primarily of use to
1717 system programs such as `login'), and convenient functions for
1718 allocating and initializing a pseudo-terminal (pty) device.
1720 * Ulrich Drepper has contributed new support for System V style
1721 shared memory and IPC on systems that support it.
1723 * Ulrich Drepper has contributed several miscellaneous new functions found
1724 in System V: The `hsearch' family of functions provide an effective
1725 implementation of hash tables; `a64l' and `l64a' provide a very simple
1726 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1729 * Ulrich Drepper has contributed new reentrant counterparts for the
1730 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1732 * Ulrich Drepper has contributed new, highly-optimized versions of several
1733 string functions for the i486/Pentium family of processors.
1735 * Ulrich Drepper has updated the Linux-specific code, based largely
1736 on work done in Hongjiu Lu's version of GNU libc for Linux.
1737 The GNU library now supports Linux versions 2.0.10 and later,
1738 using the ELF object file format (i[3456]86-*-linux).
1740 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1742 * David Mosberger-Tang and Richard Henderson have ported the C library
1743 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1744 dynamic linking support for ELF/Alpha.
1746 * Richard Henderson contributed several Alpha optimized assembler function
1747 for arithmetic and string handling.
1749 * Ulrich Drepper has contributed a new set of message catalog functions to
1750 support multiple languages using the <libintl.h> interface, for use with
1751 his new package GNU gettext. Translation volunteers have contributed
1752 catalogs of the library's messages in Spanish, German, and Korean.
1754 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1755 program and the `catgets' function for reading the catalog files it
1756 creates. (The <libintl.h> interface is preferred; we include the
1757 <nl_types.h> interface using `catgets' only for source compatibility with
1758 programs already written to use it.)
1760 * New header file <values.h> gives SVID-compatible names for <limits.h>
1763 * Various new macros, declarations, and small header files for compatibility
1766 * New function `group_member' is a convenient way to check if a process has
1767 a given effective group ID.
1769 * When using GCC 2.7 and later, the socket functions are now declared in a
1770 special way so that passing an argument of type `struct sockaddr_in *',
1771 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1772 `struct sockaddr *' type, does not generate a type-clash warning.
1774 * New function `error' declared in header file <error.h> is a convenient
1775 function for printing error messages and optionally exiting; this is the
1776 canonical function used in GNU programs. The new functions `err', `warn',
1777 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1778 doing the same thing.
1780 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1781 POSIX.2 `glob' function to do ~ and {...} expansion.
1783 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1784 `clearenv' which is used in POSIX.9 is also available.
1786 * New function `getsid' returns session ID number on systems that support it.
1788 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1789 files <db.h> and <mpool.h> provide a rich set of functions for several
1790 types of simple databases stored in memory and in files, and <ndbm.h> is
1791 an old `ndbm'-compatible interface using the `db' functions. Link with
1792 `-ldb' to get these functions.
1794 * New macro `strdupa' copies a string like `strdup', but uses local stack
1795 space from `alloca' instead of dynamic heap space from `malloc'.
1797 * New function `strnlen' is like `strlen' but searches only a given maximum
1798 number of characters for the null terminator. `stpncpy', `strndup' and
1799 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1802 * New function `statfs' in header <sys/statfs.h>.
1804 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1805 provide convenient functions for operating on blocks of null-terminated
1808 * A new suite of functions in <utmp.h> handle all the details of reading
1809 and writing the utmp file.
1811 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1814 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1815 completely POSIX compliant and also implemented the extended functionality
1816 to handle alternate digit representation and alternate era date formats.
1818 * Ulrich Drepper provided an implementation of the `strptime' function
1819 defined in XPG4.2 which transforms a string into a `struct tm' value.
1821 * Paul Eggert provided the tzselect shell script as part of the timezone
1822 code. The shell script makes it easy to select the correct timezone
1825 * The implementation of the malloc family of functions is completely replaced
1826 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1827 The implementation uses the mmap function (if available) and it is
1828 optimized for the use in multi threaded programs.
1830 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1831 functions. This new functionality is usable by specifying a special
1832 salt string and it is compatible with implementation on *BSD systems.
1834 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1835 `getsubopt' to handle second level command line options, `bsd_signal'
1836 to access BSD style `signal' functionality, the obsolete `regexp' style
1839 * the `lchown' function is available on system which support this
1842 * The implementation of the shadow password handling function was contributed
1845 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1847 * POSIX.1g support was added. The <sys/select.h> header is available,
1848 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1849 implementation of `getaddrinfo'.
1853 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1855 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1856 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1858 * The new function `daemon' from 4.4 BSD is useful for server programs that
1859 want to put themselves in the background.
1861 * Joel Sherrill has contributed support for several standalone boards that
1862 run without an operating system.
1864 * `printf', `scanf' and friends now accept a `q' type modifier for long
1865 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1867 * All of the code taken from BSD (notably most of the math and networking
1868 routines) has been updated from the BSD 4.4-Lite release.
1870 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1872 * The new functions `getdomainname' and `setdomainname' fetch or change the
1873 YP/NIS domain name. These are system calls which exist on systems which
1876 * The time zone data files have been updated for the latest international
1879 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1880 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1884 * The C library now includes support for Sun RPC, from Sun's free
1885 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1886 are included. (There is still no support for YP.)
1888 * Tom Quinn has contributed a port of the C library to SGI machines running
1889 Irix 4 (mips-sgi-irix4).
1891 * The new `lockf' function is a simplified interface to the locking
1892 facilities of `fcntl', included for compatibility.
1894 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1896 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1898 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1901 * The error message printed by `assert' for a failed assertion now includes
1902 the name of the program (if using GNU ld) and the name of the calling
1903 function (with versions of GCC that support this).
1905 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1907 * The library now includes the <sys/mman.h> header file and memory
1908 management functions `mmap', `munmap', `mprotect', `msync', and
1909 `madvise', on systems that support those facilities.
1911 * The interface for `mcheck' has changed slightly: the function called to
1912 abort the program when an allocation inconsistency is detected now takes
1913 an argument that indicates the type of failure. The new function
1914 `mprobe' lets you request a consistency check for a particular block at
1915 any time (checks are normally done only when you call `free' or `realloc'
1918 * It is now possible to easily cross-compile the C library, building on one
1919 system a library to run on another machine and/or operating system. All
1920 you need to do is set the variable `HOST_CC' in `configparms' to the
1921 native compiler for programs to run on the machine you are building on (a
1922 few generator programs are used on Unix systems); set `CC' to the
1925 * The new function `fexecve' (only implemented on the GNU system) executes
1926 a program file given a file descriptor already open on the file.
1930 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1931 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1933 * You can set the variable `libprefix' in `configparms' to specify a prefix
1934 to be prepended to installed library files; this makes it easy to install
1935 the GNU C library to be linked as `-lgnuc' or whatever.
1937 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1938 copies a limited number of characters from a string, and returns the
1939 address of the last character written.
1941 * You no longer need to check for whether the installed `stddef.h' is
1942 compatible with the GNU C library. configure now checks for you.
1944 * You can now define a per-stream `fileno' function to convert the
1945 stream's cookie into an integral file descriptor.
1947 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1948 allocates zero bytes of storage, and returns a unique pointer which
1949 you can pass to `realloc' or `free'. The behavior is undefined if
1950 you dereference this pointer.
1952 * The C library now runs on Sony NEWS m68k machines running either
1953 NewsOS 3 or NewsOS 4.
1955 * The new `syscall' function is a system-dependent primitive function
1956 for invoking system calls. It has the canonical behavior on Unix
1957 systems, including unreliable return values for some calls (such as
1958 `pipe', `fork' and `getppid').
1960 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1961 to `EAGAIN', which is the preferred name. On systems whose kernels
1962 use two distinct codes, the C library now translates EWOULDBLOCK to
1963 EAGAIN in every system call function.
1967 * The GNU C Library Reference Manual is now distributed with the library.
1968 `make dvi' will produce a DVI file of the printed manual.
1969 `make info' will produce Info files that you can read on line using C-h i
1970 in Emacs or the `info' program.
1971 Please send comments on the manual to bug-glibc-manual@gnu.org.
1973 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1975 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
1977 * Jason Merrill has contributed a port to the Sequent Symmetry running
1978 Dynix version 3 (i386-sequent-dynix).
1980 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
1981 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
1983 * New function `memory_warnings' lets you arrange to get warnings when
1984 malloc is running out of memory to allocate, like Emacs gives you.
1986 * The C library now contains the relocating allocator used in Emacs 19 for
1987 its editing buffers. This allocator (ralloc) minimizes allocation
1988 overhead and fragmentation by moving allocated regions around whenever it
1989 needs to. You always refer to a ralloc'd region with a "handle" (a
1990 pointer to a pointer--an object of type `void **').
1992 * There is a new `printf' format: `%m' gives you the string corresponding
1993 to the error code in `errno'.
1995 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
1996 or `%[' conversion, but instead of filling in a fixed-sized buffer you
1997 pass, the `a' modifier says to fill in a `char **' you pass with a
2000 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2001 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2002 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2004 * `mkstemp' is a traditional Unix function to atomically create and open a
2005 uniquely-named temporary file.
2009 * The standard location for the file that says what the local timezone is
2010 has changed again. It is now `/usr/local/etc/localtime' (or more
2011 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2013 * The distribution no longer contains any files with names longer than 14
2016 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2017 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2019 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2023 * The configuration process has changed quite a bit. The `configure'
2024 script is now used just like the configuration scripts for other GNU
2025 packages. The `sysdeps' directory hierarchy is much rearranged.
2026 The file `INSTALL' explains the new scheme in detail.
2028 * The header files no longer need to be processed into ANSI C and
2029 traditional C versions. There is just one set of files to install, and
2030 it will work with ANSI or old C compilers (including `gcc -traditional').
2032 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2033 MIPS DECStation running Ultrix 4.
2035 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2036 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2037 made itself into a shared library.
2039 * Yet further improved support for the i386, running 4.3 BSD-like systems
2040 (such as Mach 3 with the Unix single-server), or System V.
2042 * New function `strncasecmp' to do case-insensitive string comparison
2043 with limited length.
2045 * New function `strsep' is a reentrant alternative to `strtok'.
2047 * New functions `scandir' and `alphasort' for searching directories.
2049 * New function `setenv' is a better interface to `putenv'.
2051 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2052 function for traversing a directory tree.
2054 * The GNU obstack package is now also part of the C library.
2055 The new function `open_obstack_stream' creates a stdio stream that
2056 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2057 formatted output directly to an obstack.
2059 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2060 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2062 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2064 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2065 things to your strings.
2067 * There are some new test programs: test-fseek, testmb, and testrand.
2069 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2070 These ports are not finished, but are a good starting place for really
2071 supporting those systems.
2073 * `/etc/localtime' is now the standard location for the file that says what
2074 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2075 This follows the general principle that `/etc' is the place for all local
2076 configuration files.
2078 * The C library header files now use `extern "C"' when used by the C++
2079 compiler, so the C library should now work with C++ code.
2081 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2082 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2085 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2086 function which uses the `merge sort' algorithm, and is said to be
2087 significantly faster than the old GNU `qsort' function. Merge sort is
2088 now the standard `qsort' function. The new algorithm can require a lot
2089 of temporary storage; so, the old sorting function is called when the
2090 required storage is not available.
2092 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2093 provides the Unix `crypt' function, plus some other entry points.
2095 * The code and header files taken from 4.4 BSD have been updated with the
2096 latest files released from Berkeley.
2098 ----------------------------------------------------------------------
2099 Copyright information:
2101 Copyright (C) 1992-2012 Free Software Foundation, Inc.
2103 Permission is granted to anyone to make or distribute verbatim copies
2104 of this document as received, in any medium, provided that the
2105 copyright notice and this permission notice are preserved,
2106 thus giving the recipient permission to redistribute in turn.
2108 Permission is granted to distribute modified versions
2109 of this document, or of portions of it,
2110 under the above conditions, provided also that they
2111 carry prominent notices stating who last changed them.
2114 version-control: never
projects / thirdparty / glibc.git / blob