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 6778, 6808, 13717, 14042, 14150, 14151, 14154, 14157, 14173, 14283, 14298,
13 14307, 14328, 14331, 14336, 14337, 14347, 14349
15 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
16 Optimized versions of memcpy, memset, and memcmp added for System z10 and
18 Implemented by Andreas Krebbel.
20 * The new function secure_getenv allows secure access to the environment,
21 returning NULL if running in a SUID/SGID process. This function replaces
22 the internal function __secure_getenv.
24 * SystemTap static probes have been added into the dynamic linker.
25 Implemented by Gary Benson.
27 * The minimum Linux kernel version that this version of the GNU C Library
28 can be used with is 2.6.16.
33 * The following bugs are resolved with this release:
35 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
36 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
37 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
38 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
39 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
40 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
41 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
42 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
43 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
44 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
45 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658,
46 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739,
47 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806,
48 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871,
49 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895,
50 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
51 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
52 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973,
53 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040,
54 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075,
55 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134,
56 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273, 14277,
59 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
60 configuring glibc with:
61 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
62 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
63 Implemented by H.J. Lu.
67 + define static_assert
71 + declare at_quick_exit and quick_exit also for ISO C11
73 + aligned_alloc. NB: The code is deliberately allows the size parameter
74 to not be a multiple of the alignment. This is a moronic requirement
75 in the standard but it is only a requirement on the caller, not the
80 + uchar.h support added
82 + CMPLX, CMPLXF, CMPLXL added
84 Implemented by Ulrich Drepper.
86 * Support for the IA-64 has been moved to ports.
88 * Remove support for anything but ELF binary format
90 * Checking versions of poll, ppoll added.
91 Implemented by Ulrich Drepper.
93 * More generic and 64-bit performance optimizations to math functions.
94 Implemented by Ulrich Drepper.
96 * New configure option --enable-obsolete-rpc makes the deprecated RPC
97 headers and functions available at compile time as they were before
98 version 2.14. This option will be removed at some time in the future
99 after the TI-RPC library becomes fully sufficient for the needs of
100 existing applications.
102 * Compatibility code for Linux kernel versions before 2.4 has been removed.
103 Note that glibc is not expected to work with any Linux kernel version
106 * New header <sys/auxv.h> and function getauxval allowing easy access to
107 the AT_* key-value pairs passed from the Linux kernel. The header also
108 defines the HWCAP_* bits associated with the AT_HWCAP key.
110 * New locales: mag_IN
112 * New configure option --enable-systemtap builds SystemTap static probes
113 into libc for setjmp and longjmp and into libpthread for various operations.
114 So far the setjmp/longjmp probes and some of the libpthread probes are
115 provided only for i*86 and x86_64.
116 Implemented by Roland McGrath and Rayson Ho.
118 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
120 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
123 * More optimized functions for SPARC. Implemented by David S. Miller.
125 * Improved support for cross-compilation, especially bootstrap builds
126 without a previously built glibc.
128 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
129 Chris Metcalf from Tilera.
131 * Support for the old ARM ABI has been removed from ports. Only the EABI is
132 now supported for ARM processors.
134 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
135 as the name of the dynamic linker, to distinguish it from the
136 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
138 * Support for CRIS has been removed from ports.
140 * A new class of installed header has been documented for low-level
141 platform-specific functionality. PowerPC added the first instance with a
142 function to provide time base register access. Contributed by Tulio
143 Magno Quites Machado Filho.
145 * ix86 configurations now install header files that are consistent with
146 what x86-64 configurations install. These same header files can be used
147 for -m32, -m64, or -mx32 builds.
148 Contributed by H.J. Lu.
150 * Math library bug fixes. A thorough audit of all open math library bugs was
151 conducted by Joseph Myers. Significant progress was made on many math
152 library bugs resulting in more accurate exceptions and function results.
153 Many thanks to all those that contributed including Andreas Jaeger for his
154 patch review and work on the x87 trigonometric instruction issues.
156 * Timezone data is no longer installed. Timezone-related binaries and scripts
157 will continue to be installed. Users should obtain their timezone data from
158 their distribution provider or from the tzdata package at
159 <ftp://munnari.oz.au/pub/>.
163 * The following bugs are resolved with this release:
165 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
166 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
167 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
168 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
169 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
170 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
171 13484, 13506, 13515, 13523, 13524, 13538, 13540
173 * New program pldd to list loaded object of a process
174 Implemented by Ulrich Drepper.
176 * Add nss_db support back to glibc. No more dependency on Berkeley db
177 and support for initgroups lookups.
178 Implemented by Ulrich Drepper.
180 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
181 Contributed by HJ Lu.
183 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
184 Contributed by HJ Lu.
186 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
187 on x86-32 and x86-64.
188 Contributed by Liubov Dmitrieva.
190 * Optimized strchr and strrchr for SSE on x86-32.
191 Contributed by Liubov Dmitrieva.
193 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
194 for x86-64 and x86-32.
195 Contributed by Liubov Dmitrieva.
197 * New interfaces: scandirat, scandirat64
198 Implemented by Ulrich Drepper.
200 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
201 Implemented by Ulrich Drepper.
203 * nscd now also caches the netgroup database.
204 Implemented by Ulrich Drepper.
206 * Integrate libm with gcc's -ffinite-math-only option.
207 Implemented by Ulrich Drepper.
209 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
210 to math functions. Implemented by Ulrich Drepper.
212 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
213 Implemented by Ulrich Drepper.
215 * New Linux interfaces: process_vm_readv, process_vm_writev
217 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
218 Implemented by Ulrich Drepper.
220 * Optimized nearbyint and strcasecmp for PPC.
221 Implemented by Adhemerval Zanella.
223 * New locales: bho_IN, unm_US, es_CU, ta_LK
227 * The following bugs are resolved with this release:
229 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
230 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
231 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
232 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
233 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
234 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
235 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
236 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
237 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
238 12795, 12811, 12813, 12814, 12841
240 * The RPC implementation in libc is obsoleted. Old programs keep working
241 but new programs cannot be linked with the routines in libc anymore.
242 Programs in need of RPC functionality must be linked against TI-RPC.
243 The TI-RPC implementation is IPv6 enabled and there are other benefits.
245 Visible changes of this change include (obviously) the inability to link
246 programs using RPC functions without referencing the TI-RPC library and the
247 removal of the RPC headers from the glibc headers.
248 Implemented by Ulrich Drepper.
250 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
251 syncfs, setns, sendmmsg
253 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
254 yue_HK, lij_IT, mhr_RU
256 * New encodings: CP770, CP771, CP772, CP773, CP774
258 * New program sotruss to trace calls through PLTs
259 Implemented by Ulrich Drepper.
261 * The malloc hook implementation is marked deprecated and will be removed
262 from the default implementation in the next version. The design never
263 worked ever since the introduction of threads. Even programs which do
264 not create threads themselves can use multiple threads created internally.
268 * The following bugs are resolved with this release:
270 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
271 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
272 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
273 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
276 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
278 * POWER7 optimizations: memset, memcmp, strncmp
280 * New optimized string functions for x86-64: strnlen (SSE2),
281 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
282 Implemented by Ulrich Drepper.
286 * The following bugs are resolved with this release:
288 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
289 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
290 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
291 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
292 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
293 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
294 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
295 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
297 * New interfaces: pthread_getname_np, pthread_setname_np
299 * New Linux interface: recvmmsg
301 * STT_GNU_IFUNC implemented for Sparc by David Miller.
303 * The dynamic linker now recognizes supported ABI versions from the
304 EI_ABIVERSION field in the ELF header.
305 Implemented by Ulrich Drepper.
307 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
308 will not be used to fill in password fields in the passwd.byname replies.
309 Instead it is used to synthesize the shadow.byname table, should it be
310 missing. This is a useful mode in some installations involving Solaris.
311 Implemented by Ulrich Drepper.
313 * New locales: kok_IN, sq_MK, cv_RU
317 * The following bugs are resolved with this release:
319 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
320 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
321 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
322 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
323 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
324 10789, 10817, 10823, 10840, 10847
326 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
328 Implemented by Ulrich Drepper.
330 * Checking version of longjmp added that fails if an uninitialized stack
331 frame would be created. Implemented by Ulrich Drepper.
333 * STT_GNU_IFUNC is now supported in static executables.
334 Implemented by H.J. Lu.
336 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
338 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
339 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
340 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
341 Contributed by H.J. Lu.
343 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
344 Implemented by Ulrich Drepper.
346 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
348 Contributed by H.J. Lu.
350 * Support for fma instruction in AVX on x86-64.
351 Implemented by H.J. Lu and Ulrich Drepper.
353 * AVX support in x86-64 auditing support in ld.so.
354 Implemented by H.J. Lu.
356 * STB_GNU_UNIQUE support added.
357 Implemented by Ulrich Drepper.
359 * Implement second fallback mode for optimized DNS lookup for even more
360 broken environments. If two requests from the same port are not
361 handled correctly close the socket and open a new one before sending
362 the second request. The 'single-request-reopen' option in /etc/resolv.conf
363 can be used to select this mode right away, instead of rediscovering the
364 necessity is every process again.
365 Implemented by Ulrich Drepper.
367 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
368 Implemented by Adam Tkac.
370 * Optimized iconv conversions for S390x.
371 Implemented by Andreas Krebbel.
373 * Using condvars with PI mutexes is now more efficient due to kernel
374 support for requeueing to PI futexes. NPTL support added for x86-64.
375 Implemented by Ulrich Drepper.
377 * New locales: ps_AF, my_MM
381 * The following bugs are resolved with this release:
383 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
384 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
385 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
386 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
387 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
389 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
390 Implemented by Ulrich Drepper.
392 * New Linux interfaces: accept4, fallocate, fallocate64.
393 Implemented by Ulrich Drepper.
395 * Correct declarations of string function when used in C++ code. This
396 could lead to compile errors for invalid C++ code.
398 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
401 * New POSIX 2008 interface: psiginfo
402 Implemented by Ulrich Drepper.
404 * New ISO C++1x interfaces: quick_exit, at_quick_exit
405 Implemented by Ulrich Drepper.
407 * Support for selecting between multiple function definitions at runtime
408 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
410 * The libcrypt library can now use the hash function implementations in
411 NSS. Implemented by Ulrich Drepper.
413 * The malloc implementation can be compiled to be less memory efficient
414 but higher performing in multi-threaded programs.
415 Implemented by Ulrich Drepper.
417 * New locales: nan_TW@latin, ks_IN
419 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
420 Implemented by Ulrich Drepper.
422 * Extended printf hook support. It is possible to use user-defined types
423 and extend existing format specifiers.
424 Implemented by Ulrich Drepper.
426 * Handling for group shadow files has been added.
427 Implemented by Ulrich Drepper.
429 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
430 servers (the case, e.g., for some people using the built-in DNS
431 server in ADSL modems/routers). There is a once-per-process timeout
432 in case of a broken server. To avoid it, users can run nscd or put
433 'options single-request' in /etc/resolv.conf.
434 Implemented by Ulrich Drepper.
438 * The following bugs are resolved with this release:
440 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
441 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
442 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
443 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
444 6968, 6974, 6980, 6995, 7008, 7009, 7029
446 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
447 up at the same time. Implemented by Ulrich Drepper.
449 * TLS descriptors for LD and GD on x86 and x86-64.
450 Implemented by Alexandre Oliva.
452 * getaddrinfo now handles DCCP and UDPlite.
453 Implemented by Ulrich Drepper.
455 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
456 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
457 Implemented by Ulrich Drepper.
459 * New implementation of memmem, strstr, and strcasestr which is O(n).
460 Implemented by Eric Blake.
462 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
464 * Implement "e" option for popen to open file descriptor with the
465 close-on-exec flag set. Implemented by Ulrich Drepper.
467 * Implement "b" mode for fmemopen. In this mode writes writes don't
468 implicitly add a NUL byte and seeks from the end of the buffer really
469 use the buffer end, not the string length as the basis.
470 Implemented by Ulrich Drepper.
472 * Many functions, exported and internal, now atomically set the close-on-exec
473 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
475 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
477 Implemented by Pravin Satpute.
479 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
483 * The following bugs are resolved with this release:
485 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
486 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
487 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
488 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
489 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
490 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
491 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
493 * New locales: bo_CN, bo_IN, shs_CA.
495 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
497 * Sorting rules for some Indian languages (Devanagari and Gujarati).
498 Implemented by Pravin Satpute.
500 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
502 * nscd caches now all timeouts for DNS entries
503 Implemented by Ulrich Drepper.
505 * nscd is more efficient and wakes up less often.
506 Implemented by Ulrich Drepper.
508 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
509 vdprintf, and obstack_vprintf.
510 Implemented by Jakub Jelinek.
512 * Faster memset for x86-64.
513 Implemented by Harsha Jagasia and H.J. Lu.
515 * Faster memcpy on x86.
516 Implemented by Ulrich Drepper.
518 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
519 Implemented by Ulrich Drepper.
521 * Faster sqrt and sqrtf implemention for some PPC variants.
522 Implemented by Steven Munroe.
526 * The following bugs are resolved with this release:
528 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
529 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
530 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
531 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
532 5071, 5103, 5104, 5112, 5113, 5184, 5186
534 * More checking functions: fread, fread_unlocked, open*, mq_open.
535 Implemented by Jakub Jelinek and Ulrich Drepper.
537 * Extend fortification to C++. Implemented by Jakub Jelinek.
539 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
540 by not recognizing 'a' as a modifier when those specs are requested.
541 Implemented by Jakub Jelinek.
543 * PPC optimizations to math and string functions.
544 Implemented by Steven Munroe.
546 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
547 options to be passed. Implemented by Ulrich Drepper.
549 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
551 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
552 Implemented by Ulrich Drepper.
554 * Handle private futexes in the NPTL implementation.
555 Implemented by Jakub Jelinek and Ulrich Drepper.
557 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
558 Implemented by Roland McGrath and Ulrich Drepper.
560 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
562 * SHA-256 and SHA-512 based password encryption.
563 Implemented by Ulrich Drepper.
565 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
566 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
569 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
570 Implemented by Ulrich Drepper.
574 * The following bugs are resolved with this release:
576 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
577 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
578 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
579 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
580 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
581 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
582 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
585 * New Linux interfaces: epoll_pwait, sched_getcpu.
587 * New generic interfaces: strerror_l.
589 * nscd can now cache the services database. Implemented by Ulrich Drepper.
593 * The following bugs are resolved with this release:
595 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
596 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
597 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
598 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
599 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
600 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
601 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
602 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
603 3225, 3251, 3252, 3253, 3273
605 * For Linux, the sorting of addresses returned by getaddrinfo now also
606 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
607 Implemented by Ulrich Drepper.
609 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
610 Implemented by Ulrich Drepper.
612 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
614 * New iconv module for MIK. Contributed by Alexander Shopov.
616 * For sites with broken group and/or passwd database, the auto-propagate
617 option of nscd can prevent creating ID lookup entries from the results
618 of a name lookup and vice versa. This usually is no problem but some
619 site might have problems with the default behavior.
620 Implemented by Ulrich Drepper.
622 * Iterating over entire database in NIS can be slow. With the
623 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
624 to trade time for memory. The entire database will be read at once.
625 Implemented by Ulrich Drepper.
627 * The interfaces introduced in RFC 3542 have been implemented by
630 * Support for the new ELF hash table format was added by Ulrich Drepper.
632 * Support for priority inheritance mutexes added by Jakub Jelinek and
635 * Support for priority protected mutexes added by Jakub Jelinek.
637 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
638 or_IN, csb_PL, fy_NL, sr_ME.
642 * More overflow detection functions.
644 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
645 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
647 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
648 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
649 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
650 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
651 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
652 by Masahide Washizawa.
654 * It is now possible to install audit libraries for the dynamic linker using
655 LD_AUDIT. Implemented by Ulrich Drepper.
657 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
658 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
659 For a libc and libpthread that works well on Linux 2.4 kernels, we
660 recommend using the stable 2.3 branch.
662 * The new function open_wmemstream acts like open_memstream,
663 but uses a wchar_t wide character buffer.
665 * The new function ppoll is an improved version of poll, similar to pselect.
667 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
668 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
669 renameat, unlinkat, linkat, symlinkat, readlinkat.
671 * New Linux kernel system calls: unshare,
672 inotify_init, inotify_add_watch, inotify_rm_watch.
674 * The euidaccess function is now also known by the alias eaccess,
675 for compatibility with some other systems.
677 * Timezone data updated to 2006b version.
681 * The following bugs are resolved with this release:
683 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
684 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
685 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
686 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
687 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
688 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
690 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
692 * As of this release, GCC 4 can be used to compile the C Library.
694 * Timezone data updated to 2005m version.
698 * The following bugs are resolved with this release:
700 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
701 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
702 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
703 777, 787, 821, 822, 823, 825
705 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
709 * Support for RFC 3678. Real implementations exist only for Linux so far.
710 Implemented by Ulrich Drepper.
712 * nscd can now cache entries persistently. Expiring entries are reloaded.
713 For speedups the cache can be shared in memory with client processes.
714 Implemented by Ulrich Drepper.
716 * nscd can now perform SELinux checks.
717 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
719 * getaddrinfo queries are now cached. Canonical name lookup is performed
721 Implemented by Ulrich Drepper.
723 * The nothrow function attribute is used when headers are used by gcc when
724 compiling C code. This can avoid significant amounts of exception
727 * The malloc functions perform more error checking and are stricter when
728 it comes to reacting on errors. The default action is to terminate
729 the process after showing an error message. Implemented by Ulrich Drepper.
731 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
732 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
734 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
735 namespaces using the new function dlmopen(). This feature is of course,
736 like most other dynamic loading functionality, not available in statically
737 linked applications. Implemented by Ulrich Drepper.
739 * Low-overhead boundary checking variants of string and some stdio functions
740 were added. These are to be used in conjunction with a gcc patch by
741 Jakub Jelinek which adds calls to these functions if possible.
742 Implemented by Jakub Jelinek and Ulrich Drepper.
744 * Old code for several operating systems and machine architectures that
745 have not been in working condition in a long time have been removed from
746 the main source tree maintained by the GNU C Library's maintainers.
747 These files are now reside in the separate `ports' source module
748 that is usable as an add-on when building the library.
752 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
753 interrogate the dynamic linker, compatible with the Solaris interface.
755 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
756 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
758 * getifaddrs now uses the netlink interface on Linux to get its information.
759 Implemented by Thorsten Kukuk.
761 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
762 Implemented by Ulrich Drepper.
764 * support for non-executable stacks on x86 has been added. Changes mostly
767 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
770 * getaddrinfo now performs destination address selection according to
775 * Thread-safe interfaces for many functions that access locale data
776 were added in version 2.3, but these features were omitted from NEWS.
777 Many functions have variants with an `_l' suffix that take a `locale_t'
778 object as a parameter rather than consulting the current locale.
779 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
780 create and maintain `locale_t' objects. Additionally, the new function
781 `uselocale' sets "the current locale" (as used by functions not so
782 parameterized) set for an individual thread. These features were added
783 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
785 * The functions getresuid, getresgid, setresuid, and setresgid, which
786 have long been available on Linux, are now declared in <unistd.h>
787 and are now also available on the Hurd.
789 * ELF thread-local storage support (TLS) now works on x86-64.
791 * The new dynamic string token $LIB is expanded in shared library names.
792 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
794 * Aldy Hernandez contributed complete software floating point support for
795 PowerPC machines with no FPU.
797 * fexecve is implemented on Linux.
799 * The `btowc' function should work at least twice as fast due to
800 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
802 * With approriate thread add-ons cancelable functions are now implemented
803 in libc.so as well. No need to call the function in libpthread. This
804 change allowed to finally disable the incorrect and expensive handling
805 of weak definition in ld.so.
807 * Yet more PLT entries in libc.so have been removed. We finally arrived
808 at the bare minimum. Startup times improved appropriately.
810 * Support for the new Linux/x86 system call interface was added. The
811 AT_SYSINFO auxiliary vector entry is recognized and handled.
815 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
818 * iconv (the program and the interface) now accepts empty names (excluding
819 options like //TRANSLIT) to mean "use charset of current locale".
821 * localedef can now transliterate characters in strings which are not in
822 the provided charmap. The information from the input locale is used.
824 * Prelinking support was added for ELF targets. This requires additional
825 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
827 * Read-only stdio streams now use mmap to speed up operation by eliminating
828 copying and buffer underflows. To use add 'm' to the mode string of
829 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
831 * The malloc functions were completely rewritten by Wolfram Gloger based
832 on Doug Lea's malloc-2.7.0.c.
834 * Isamu Hasegawa contributed a completely new and POSIX-conformant
835 implementation of regex.
837 * Bruno Haible upgraded the iconv and locale implementation to support
840 * Contents of the LC_* and LANG environment variables in the CEN style are
841 not recognized anymore. It never was used. Change by Ulrich Drepper.
843 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
844 thread-local storage (TLS) ABI on some platforms.
845 Changes by Ulrich Drepper. SH support by Kaz Kojima.
847 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
848 EUC-JISX0213, and TSCII.
850 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
851 BSD-compatible interface for getting all network interface addresses.
852 Implementation for IPv4 by Roland McGrath.
854 * Loading of locale data is faster due to the introduction of a locale
855 archive. Implemented by Roland McGrath and Ulrich Drepper.
857 * Startup times are significantly reduced by not using exported functions
858 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
861 * Steven Munroe contributed a port to PowerPC64/Linux.
865 * The Hurd now uses the GNU libio implementation of stdio rather than the
866 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
868 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
869 with the same behavior as the Linux system call of the same name.
873 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
874 128-bit long double format.
876 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
877 IBM1161, and IBM1162 charsets.
879 * Andreas Jaeger contributed a port to x86-64/Linux.
881 * Peter Bruin contributed a port to PowerPC/Hurd.
883 * libc functions using I/O streams now can handle wide-oriented streams
886 * optimizations in the dynamic linker. Binaries created by recent binutils
887 versions start up quicker due to reduced time spent on relocations.
889 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
893 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
894 asinh, atanh, j0 for the 128-bit long double format.
896 * Bruno Haible updated all the code handling Unicode in some form to
899 * Speed of regex for single-byte locales is back to previous levels.
900 Patch by Isamu Hasegawa.
902 * Alpha, SPARC, and IA-64 now also using floating stacks.
904 * Startup time of internationalized applications greatly improved through
905 iconv cache. Use iconvconfig to generate the cache file.
906 Contributed by Ulrich Drepper.
908 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
909 severe performance problems. Patch by David Mosberger.
911 * The Hurd port got a lot more functionality like AIO, various stdio
912 extensions, etc. Mainly done by Roland McGrath.
914 * mtrace can now lookup symbols in shared libraries.
918 * Intel's IA-64 math library is largely integrated. It provides fast and
919 accurate implementatations for most basic and standard math functions
920 in float, double, and long double format.
922 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
923 and asin for the 96-bit long double format and asin, log, tan for the
924 128-bit long double format.
926 * The beginning of a last-bit accurate math library by IBM Haifa were added.
927 The basic double functions exist today. Contributed by Abraham Ziv
928 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
929 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
931 * An asynchronous name lookup library was added. The interface is designed
932 after POSIX AIO. The proposal was circulated beforehand to get comments.
933 No negative ones came in. Implemented by Ulrich Drepper.
935 * Port to S390/64bit contributed by Martin Schwidefsky
936 <schwidefsky@de.ibm.com>.
938 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
939 of functions for Linux/IA-64.
941 * The RPC code is now thread safe. Threads can now use the same service
942 of different services at the same time. Patch by Eric Norum
943 <eric.norum@usask.ca> with some help by Ulrich Drepper.
945 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
946 family of functions for Linux/S390.
948 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
949 of functions for Linux/x86.
951 * Port to Linux/CRIS contributed by Axis Communications.
955 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
956 we can now check for namespace violations and missing declarations. The
957 result is that almost all headers are now Unix-compliant (as defined in
958 the upcoming XPG6). The negative side is that some programs might need
959 corrections, too, if they depend on the incorrect form of the headers in
960 previous versions which defined too many symbols and included too many
963 * regex now handles multibyte character sets correctly.
964 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
966 * iconv (the program) does now conform to the upcoming XPG6 and handles
967 charmaps. Instead of the charset names the path of charmaps can be
968 provided and the conversion happens based on this data.
969 Contributed by Ulrich Drepper.
971 * The locale program now provides detailed information about the installed
976 only lists the names of the supported locales
980 provides details such as country, language, and codeset name.
981 Contributed by Ulrich Drepper.
985 * The gencat program now parses the input file according to the charset
986 selected by the LC_CTYPE category. This is important for stateful
987 character sets. To make generating catalogs easier there is a way
988 to overwrite the charset selected by the locale: before the first
989 message or $ quote line the catalog can contain a line like
993 to select the charset (ISO-8859-2 in this case).
995 Implemented by Shinya Hanataka and Ulrich Drepper.
997 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
998 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
999 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1001 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1002 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1004 * The LANGUAGE environment variable is now ignored unless the locale is
1005 changed from the default "C" locale.
1007 * The usual bug fixes.
1011 * Greg McGary added runtime support for bounds checking using gcc's
1012 new -fbounded-pointers option. ix86 target is complete. PowerPC
1015 * Thorsten Kukuk added secure mode support to nscd.
1017 * The Berkeley db libraries have been removed.
1019 Related, the nss_db module is now in a separate package since it
1020 obviously requires a database library being available.
1022 * Wide character I/O streams implemented by Ulrich Drepper.
1024 * Functions from the extended socket API added by Ulrich Drepper.
1026 * Functions feenableexcept and fedisableexcept to control the
1027 behaviour of individual exceptions have been added by Andreas Jaeger.
1029 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1031 * The resolver code has been updated from bind 8.2.3-T5B which supports
1032 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1035 This change could in some situations effect backward compatibility. Since
1036 now `_res' is a thread-local instead of a global variable, modifying it
1037 in one thread does not have any effect in other threads.
1039 The resolver library was also extended to allow IPv6 as the transport
1040 protocol for the requests. This work was done by Stig Venaas.
1042 * Compatibility code for K&R C compilers has been removed from the
1043 header files. A ISO C compiler is needed to use the library
1044 (conforming to either C89 or C99 standard).
1046 * Complete rewrite of the localedef program to support multibyte character
1047 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1048 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1049 Implemented by Ulrich Drepper.
1051 Bruno Haible significantly improved the generation and use of the data
1052 structures for the wide character tables.
1054 * Plural handling in gettext implemented by Ulrich Drepper.
1056 * The utmp daemon has been removed.
1058 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1060 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1063 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1065 * POSIX barriers implemented by Kaz Kylheku.
1067 * POSIX spawn function family implemented by Ulrich Drepper.
1069 * POSIX spinlocks are now available.
1071 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1073 * the configure option --enable-kernel=X.Y.Z allows to strip out
1074 compatibility for kernel versions before X.Y.Z. This is currently only
1075 implemented for Linux.
1077 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1078 field sin6_scope_id. This means that all programs using IPv6 should be
1079 recompiled. Don't expect binary compatibility with previous glibc
1082 * various conversion modules for IBM character sets contributed by
1085 * IA-64 port by Jes Sorensen and HJ Lu.
1099 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1101 * New xdr functions are added; some rpc functions are now 64bit clean.
1103 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1105 * Fixed known incompatibilities with glibc 2.0.
1107 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1109 * Optimized a number of functions (especially the ELF dynamic loader).
1111 * Update timezone data files.
1113 * lots of charmaps corrections
1115 * some new locale definitions and charmaps
1120 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1121 conform to POSIX member type requirements. Symbol versions have been
1122 adjusted as needed within the library, and for direct use by applications,
1123 but there is potential for problems if third-party libraries use
1124 struct timeval as part of their interface. This does not present
1125 a problem for X and other "essential" system libraries.
1127 * An additional locale model to support C++ Standard Library locale
1128 model and probably more was implemented by Ulrich Drepper.
1130 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1133 * Miles Bader provided the `argp' function family to support hierachical
1134 command line argument parsing, layered on top of getopt.
1136 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1138 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1141 * scanf recognizes the %a and %A format for scanning floating point numbers.
1143 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1144 information and interfaces for the available integer types.
1146 * about 130 new math functions were added to implement the ISO C9x math
1149 * the new header <complex.h> contains definitions of the complex math
1150 functions from ISO C 9X.
1152 * the new header <tgmath.h> defines generic macros to use complex or
1153 real valued functions.
1155 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1157 * Andreas Jaeger provided a test suite for the math library.
1159 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1161 * Ulrich Drepper added character set conversion functions (iconv).
1163 * Optimized string functions have been added.
1165 * The localedata addon is now part of glibc.
1167 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1169 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1170 daemon for NSS (nscd).
1172 Missing a better place here are some numbers on improvements. Under
1173 Linux 2.1.125 un-tar-ing the kernel sources takes
1177 using local files 12.19s 6.88s 22.91s
1179 using NIS 13.92s 8.91s 26.34s
1181 using NIS & nscd 10.37s 7.34s 25.30s
1183 using NIS+ 27.57s 30.37s 640.46s
1185 using NIS+ & nscd 10.25s 7.83s 26.51s
1187 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1189 Keep in mind that non-namelookup related operations dominate above times.
1190 It was just a common complain that using NIS+ unpacking the kernel is
1193 [1] The old nscd implementation is not available anymore since it was
1194 distributed with glibc up to version 2.0.98 and thus is now replaced.
1196 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1198 * Mark Kettenis provided a Hesiod NSS module.
1200 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1201 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1203 * rcmd can now handle netgroups (Dick Streefland).
1205 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1208 * Support for the IPv6 protocol has been added to the socket API, as per the
1209 latest draft standards.
1211 * Support for Linux 2.2 has been added.
1213 * Interface changes relative to the latest 2.0.x release:
1214 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1215 addseverity NEW: Unix98
1216 alphasort64 NEW: LFS
1217 argp_err_exit_status NEW: argp, GNU ext
1218 argp_error NEW: argp, GNU ext
1219 argp_failure NEW: argp, GNU ext
1220 argp_help NEW: argp, GNU ext
1221 argp_parse NEW: argp, GNU ext
1222 argp_program_bug_address NEW: argp, GNU ext
1223 argp_program_version NEW: argp, GNU ext
1224 argp_program_version_hook NEW: argp, GNU ext
1225 argp_state_help NEW: argp, GNU ext
1226 argp_usage NEW: argp, GNU ext
1227 authdes_create NEW: Secure RPC
1228 authdes_getucred NEW: Secure RPC
1229 authdes_pk_create NEW: Secure RPC
1230 backtrace NEW: GNU ext.
1231 backtrace_symbols NEW: GNU ext.
1232 backtrace_symbols_fd NEW: GNU ext.
1234 cacosf NEW: ISO C 9x
1235 cacosh NEW: ISO C 9x
1236 cacoshf NEW: ISO C 9x
1237 cacoshl NEW: ISO C 9x
1238 cacosl NEW: ISO C 9x
1245 casinf NEW: ISO C 9x
1246 casinh NEW: ISO C 9x
1247 casinhf NEW: ISO C 9x
1248 casinhl NEW: ISO C 9x
1249 casinl NEW: ISO C 9x
1251 catanf NEW: ISO C 9x
1252 catanh NEW: ISO C 9x
1253 catanhf NEW: ISO C 9x
1254 catanhl NEW: ISO C 9x
1255 catanl NEW: ISO C 9x
1256 cbc_crypt NEW: Secure RPC
1260 ccoshf NEW: ISO C 9x
1261 ccoshl NEW: ISO C 9x
1267 cimagf NEW: ISO C 9x
1268 cimagl NEW: ISO C 9x
1269 clearerr_locked REMOVED
1270 clntunix_create NEW: sunrpc ext
1272 clog10 NEW: ISO C 9x
1273 clog10f NEW: ISO C 9x
1274 clog10l NEW: ISO C 9x
1284 cprojf NEW: ISO C 9x
1285 cprojl NEW: ISO C 9x
1287 crealf NEW: ISO C 9x
1288 creall NEW: ISO C 9x
1293 csinhf NEW: ISO C 9x
1294 csinhl NEW: ISO C 9x
1297 csqrtf NEW: ISO C 9x
1298 csqrtl NEW: ISO C 9x
1302 ctanhf NEW: ISO C 9x
1303 ctanhl NEW: ISO C 9x
1305 des_setparity NEW: Secure RPC
1306 ecb_crypt NEW: Secure RPC
1307 endutxent NEW: Unix98
1309 exp10f NEW: ISO C 9x
1310 exp10l NEW: ISO C 9x
1314 fattach NEW: STREAMS
1315 fdetach NEW: STREAMS
1319 feclearexcept NEW: ISO C 9x
1320 fegetenv NEW: ISO C 9x
1321 fegetexceptflag NEW: ISO C 9x
1322 fegetround NEW: ISO C 9x
1323 feholdexcept NEW: ISO C 9x
1325 feraiseexcept NEW: ISO C 9x
1326 ferror_locked REMOVED
1327 fesetenv NEW: ISO C 9x
1328 fesetexceptflag NEW: ISO C 9x
1329 fesetround NEW: ISO C 9x
1330 fetestexcept NEW: ISO C 9x
1331 feupdateenv NEW: ISO C 9x
1332 fflush_locked REMOVED
1336 fgets_unlocked NEW: GNU ext.
1337 fileno_locked REMOVED
1349 fputc_locked REMOVED
1350 fputs_unlocked NEW: GNU ext.
1351 fread_unlocked NEW: GNU ext.
1356 fstatvfs NEW: Unix98
1360 ftruncate64 NEW: LFS
1362 fwrite_unlocked NEW: GNU ext.
1363 gai_strerror NEW: IPv6
1367 getchar_locked REMOVED
1369 getdate_err NEW: Unix98
1370 getdate_r NEW: GNU ext.
1372 getnameinfo NEW: IPv6
1373 getnetname NEW: Secure RPC
1374 getpmsg NEW: STREAMS
1375 getpt NEW: Unix98 PTY
1376 getrlimit64 NEW: LFS
1377 getutxent NEW: Unix98
1378 getutxid NEW: Unix98
1379 getutxline NEW: Unix98
1380 glob64 NEW: GNU ext.
1381 globfree64 NEW: GNU ext.
1382 gnu_get_libc_release NEW: GNU ext.
1383 gnu_get_libc_version NEW: GNU ext.
1384 grantpt NEW: Unix98 PTY
1385 host2netname NEW: Secure RPC
1387 iconv_close NEW: iconv
1388 iconv_open NEW: iconv
1389 if_freenameindex NEW: IPv6
1390 if_indextoname NEW: IPv6
1391 if_nameindex NEW: IPv6
1392 if_nametoindex NEW: IPv6
1393 in6addr_any NEW: IPv6
1394 in6addr_loopback NEW: IPv6
1395 inet6_isipv4mapped NEW: IPv6
1396 isastream NEW: STREAMS
1397 iswblank NEW: GNU ext.
1398 key_decryptsession NEW: Secure RPC
1399 key_decryptsession_pk NEW: Secure RPC
1400 key_encryptsession NEW: Secure RPC
1401 key_encryptsession_pk NEW: Secure RPC
1402 key_gendes NEW: Secure RPC
1403 key_get_conv NEW: Secure RPC
1404 key_secretkey_is_set NEW: Secure RPC
1405 key_setnet NEW: Secure RPC
1406 key_setsecret NEW: Secure RPC
1407 llrint NEW: ISO C 9x
1408 llrintf NEW: ISO C 9x
1409 llrintl NEW: ISO C 9x
1410 llround NEW: ISO C 9x
1411 llroundf NEW: ISO C 9x
1412 llroundl NEW: ISO C 9x
1417 lrintf NEW: ISO C 9x
1418 lrintl NEW: ISO C 9x
1419 lround NEW: ISO C 9x
1420 lroundf NEW: ISO C 9x
1421 lroundl NEW: ISO C 9x
1423 makecontext NEW: Unix98
1424 mempcpy NEW: GNU ext.
1427 modify_ldt NEW: kernel
1431 nearbyint NEW: ISO C 9x
1432 nearbyintf NEW: ISO C 9x
1433 nearbyintl NEW: ISO C 9x
1434 netname2host NEW: Secure RPC
1435 netname2user NEW: Secure RPC
1436 nexttoward NEW: ISO C 9x
1437 nexttowardf NEW: ISO C 9x
1438 nexttowardl NEW: ISO C 9x
1442 passwd2des NEW: Secure RPC
1444 pow10f NEW: GNU ext.
1445 pow10l NEW: GNU ext.
1448 printf_size NEW: GNU ext.
1449 printf_size_info NEW: GNU ext.
1450 profil_counter REMOVED
1451 pthread_mutexattr_getkind_np REPLACED
1452 pthread_mutexattr_setkind_np REPLACED
1453 ptsname NEW: Unix98 PTY
1454 ptsname_r NEW: Unix98 PTY
1456 putchar_locked REMOVED
1457 putgrent NEW: GNU ext.
1459 putpmsg NEW: STREAMS
1460 pututxline NEW: Unix98
1464 readdir64_r NEW: LFS
1465 remquo NEW: ISO C 9x
1466 remquof NEW: ISO C 9x
1467 remquol NEW: ISO C 9x
1469 roundf NEW: ISO C 9x
1470 roundl NEW: ISO C 9x
1472 scalbln NEW: ISO C 9x
1473 scalblnf NEW: ISO C 9x
1474 scalblnl NEW: ISO C 9x
1476 sendfile NEW: kernel
1477 setcontext NEW: Unix98
1478 setrlimit64 NEW: LFS
1479 setutxent NEW: Unix98
1481 sigignore NEW: Unix98
1482 sigqueue NEW: POSIX.1b
1483 sigrelse NEW: Unix98
1484 sigset NEW: POSIX.1b
1485 sigtimedwait NEW: POSIX.1b
1486 sigwaitinfo NEW: POSIX.1b
1487 sincos NEW: GNU ext.
1488 sincosf NEW: GNU ext.
1489 sincosl NEW: GNU ext.
1493 strcasestr NEW: GNU ext.
1494 strtoimax NEW: ISO C 9x
1495 strtoumax NEW: ISO C 9x
1496 strverscmp NEW: GNU ext.
1497 svcauthdes_stats NEW: Secure RPC
1498 svcunix_create NEW: sunrpc etx
1499 svcunixfd_create NEW: sunrpc ext
1500 swapcontext NEW: Unix98
1501 tcgetsid NEW: Unix98 PTY
1502 tdestroy NEW: GNU ext.
1503 tgamma NEW: ISO C 9x
1504 tgammaf NEW: ISO C 9x
1505 tgammal NEW: ISO C 9x
1509 truncf NEW: ISO C 9x
1510 truncl NEW: ISO C 9x
1512 unlockpt NEW: Unix98 PTY
1513 updwtmpx NEW: Unix98
1514 user2netname NEW: Secure RPC
1515 utmpxname NEW: Unix98
1516 versionsort NEW: GNU ext.
1517 versionsort64 NEW: GNU ext.
1519 wcscasecmp NEW: GNU ext.
1520 wcsncasecmp NEW: GNU ext.
1521 wcsnlen NEW: GNU ext.
1522 wcstoimax NEW: ISO C 9x
1523 wcstoll NEW: ISO C 9x
1524 wcstoull NEW: ISO C 9x
1525 wcstoumax NEW: ISO C 9x
1527 wordexp NEW: POSIX.2
1528 wordfree NEW: POSIX.2
1529 write_profiling REMOVED
1530 xdecrypt NEW: Secure RPC
1531 xdr_authdes_cred NEW: Secure RPC
1532 xdr_authdes_verf NEW: Secure RPC
1533 xdr_cryptkeyarg NEW: Secure RPC
1534 xdr_cryptkeyarg2 NEW: Secure RPC
1535 xdr_cryptkeyres NEW: Secure RPC
1536 xdr_getcredres NEW: Secure RPC
1537 xdr_key_netstarg NEW: Secure RPC
1538 xdr_key_netstres NEW: Secure RPC
1539 xdr_keybuf NEW: Secure RPC
1540 xdr_keystatus NEW: Secure RPC
1541 xdr_netnamestr NEW: Secure RPC
1542 xdr_sizeof NEW: Secure RPC
1543 xdr_unixcred NEW: sunrpc ext
1544 xencrypt NEW: Secure RPC
1545 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1556 * inet_ntoa is thread-safe
1558 * updwtmp is moved from libutil to libc
1560 * rewrite of cbrt function
1562 * update of timezone data
1576 * add atoll function
1578 * fix complex problems in Berkeley DB code
1580 * fix math functions
1584 * fixed lots of header problems (especially Linux/GNU specific)
1586 * dynamic loader preserves all registers
1588 * Roland McGrath provided support for handling of auxiliary objects in
1589 the ELF dynamic loader.
1591 * support for parallel builds is improved
1595 * GNU extensions are no longer declared by default. To enable them you
1596 must define the macro `_GNU_SOURCE' in your program or compile with
1599 * The library has changed from using GNU ld symbol aliases to using weak
1600 symbols where available. The ELF object file format supports weak
1601 symbols; GNU ld also supports weak symbols in the a.out format. (There
1602 is also now support for other GNU ld extensions in ELF. Use the
1603 `--with-elf' option to configure to indicate you have ELF, and
1604 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1605 of many files which contained only symbol aliases, reducing the size of
1606 the source and the compiled library; many other files were renamed to
1607 less cryptic names previously occupied by the symbol alias files.
1608 There is a new header file <elf.h> for programs which operate on
1609 files in the ELF format.
1611 * Converted to Autoconf version 2, so `configure' has more options.
1612 Run `configure --help' to see the details.
1614 * The library can now be configured to build profiling, highly-optimized
1615 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1616 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1617 `configure' enable building these extra libraries. The shared library is
1618 built by default when using both ELF and GNU ld. When shared libraries
1619 are enabled, the new library `-ldl' is available for arbitrary run-time
1620 loading of shared objects; its interface is defined in <dlfcn.h>. The
1621 new header file <link.h> gives access to the internals of the run-time
1622 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1623 application of same name on other systems and it provides information
1624 about dynamically linked binaries.
1626 * The C library now provides the run-time support code for profiling
1627 executables compiled with `-pg'. Programs can control the profiling code
1628 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1629 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1630 the support for this file format was contributed by David Mosberger-Tang.
1632 * The math code has been replaced with a math library based on fdlibm from
1633 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1634 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1635 functions. The math functions now reside in a separate library, so
1636 programs using them will need to use `-lm' their linking commands.
1638 * John C. Bowman contributed optimized ix87 assembler inline functions.
1640 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1641 mechanism similar to that found in Solaris 2. This is now used for the
1642 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1643 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1644 file controls what services are used for each individual database. This
1645 works by loading shared libraries with names specified in `nsswitch.conf',
1646 so service modules can be changed or added at any time without even
1647 relinking any program. Currently there are the file, db, and NIS based
1648 NSS services available.
1650 * The new functions `strtoq' and `strtouq' parse integer values from
1651 strings, like `strtol' and `strtoul', but they return `long long int' and
1652 `unsigned long long int' values, respectively (64-bit quantities).
1654 * The new functions `strtof' and `strtold' parse floating-point values from
1655 strings, like `strtod', but they return `float' and `long double' values,
1656 respectively (on some machines `double' and `long double' are the same).
1658 * Ulrich Drepper has contributed new implementations of the floating-point
1659 printing and reading code used in the `printf' family of functions and
1660 `strtod', `strtof', and `strtold'. These new functions are perfectly
1661 accurate, and much faster than the old ones.
1663 * The implementation of the POSIX locale model was completely rewritten by
1664 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1665 to compile the POSIX locale definition.
1667 * The former dummy implementations of the strcoll and strxfrm function are
1668 now replaced by fully functional code contributed by Ulrich Drepper. The
1669 collation information comes from the POSIX locale definitions.
1671 * The new header <langinfo.h> defines an interface for accessing
1672 various locale-dependent data (using the locale chosen with `setlocale').
1674 * Ulrich Drepper has contributed a new suite of functions for operation on
1675 wide-character and multibyte-character strings, in <wchar.h>;
1676 and classification and case conversion of wide characters, in <wctype.h>.
1677 These new functions are conforming to the ISO C, Amendement 1 specification.
1679 * There is now a second implementation of the standard I/O library available.
1680 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1681 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1683 * You can now use positional parameter specifications in format strings
1684 for the `printf' and `scanf' families of functions. For example,
1685 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1686 ``Number 6, Mr Jones''. This is mainly useful when providing different
1687 format strings for different languages, whose grammars may dictate
1688 different orderings of the values being printed. To support this
1689 feature, the interface for `register_printf_handler' has changed; see
1690 the header file <printf.h> for details.
1692 * The `printf' and `scanf' families of functions now understand a new
1693 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1694 to group numbers as indicated by the locale; for `scanf' and friends, this
1695 says to accept as valid only a number with all the proper grouping
1696 separators in the right places. In the default "C" locale, numbers are
1697 not grouped; but locales for specific countries will define the usual
1698 conventions (i.e. separate thousands with `,' in the US locale).
1700 * The pgrp functions have been regularized, slightly incompatibly but much
1701 less confusingly. The core functions are now `getpgid' and `setpgid',
1702 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1703 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1704 provided for compatibility. There is no longer an incompatible `getpgrp'
1705 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1707 * The new header file <fts.h> and suite of functions simplify programs that
1708 operate on directory trees. This code comes from 4.4 BSD.
1710 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1711 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1712 NSS scheme used in glibc.
1714 * There is a new malloc debugging hook `__memalign_hook'.
1716 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1717 `unsigned int' in <sys/types.h>. These are for compatibility only and
1718 their use is discouraged.
1720 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1721 done differently, so that it works even without GNU ld.
1723 * New function `euidaccess' checks allowed access to a file like `access',
1724 but using the effective IDs instead of the real IDs.
1726 * The time zone data files have been updated for the latest and greatest
1727 local time conventions of the countries of the world.
1729 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1732 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1733 for formatting floating-point numbers. They are provided only for
1734 compatibility; new programs should use `sprintf' instead. There are
1735 also equivalent function for the `long double' floating-point type and
1736 all functions also exist in a reentrant form.
1738 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1739 functions for maintaining the login-record files (primarily of use to
1740 system programs such as `login'), and convenient functions for
1741 allocating and initializing a pseudo-terminal (pty) device.
1743 * Ulrich Drepper has contributed new support for System V style
1744 shared memory and IPC on systems that support it.
1746 * Ulrich Drepper has contributed several miscellaneous new functions found
1747 in System V: The `hsearch' family of functions provide an effective
1748 implementation of hash tables; `a64l' and `l64a' provide a very simple
1749 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1752 * Ulrich Drepper has contributed new reentrant counterparts for the
1753 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1755 * Ulrich Drepper has contributed new, highly-optimized versions of several
1756 string functions for the i486/Pentium family of processors.
1758 * Ulrich Drepper has updated the Linux-specific code, based largely
1759 on work done in Hongjiu Lu's version of GNU libc for Linux.
1760 The GNU library now supports Linux versions 2.0.10 and later,
1761 using the ELF object file format (i[3456]86-*-linux).
1763 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1765 * David Mosberger-Tang and Richard Henderson have ported the C library
1766 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1767 dynamic linking support for ELF/Alpha.
1769 * Richard Henderson contributed several Alpha optimized assembler function
1770 for arithmetic and string handling.
1772 * Ulrich Drepper has contributed a new set of message catalog functions to
1773 support multiple languages using the <libintl.h> interface, for use with
1774 his new package GNU gettext. Translation volunteers have contributed
1775 catalogs of the library's messages in Spanish, German, and Korean.
1777 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1778 program and the `catgets' function for reading the catalog files it
1779 creates. (The <libintl.h> interface is preferred; we include the
1780 <nl_types.h> interface using `catgets' only for source compatibility with
1781 programs already written to use it.)
1783 * New header file <values.h> gives SVID-compatible names for <limits.h>
1786 * Various new macros, declarations, and small header files for compatibility
1789 * New function `group_member' is a convenient way to check if a process has
1790 a given effective group ID.
1792 * When using GCC 2.7 and later, the socket functions are now declared in a
1793 special way so that passing an argument of type `struct sockaddr_in *',
1794 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1795 `struct sockaddr *' type, does not generate a type-clash warning.
1797 * New function `error' declared in header file <error.h> is a convenient
1798 function for printing error messages and optionally exiting; this is the
1799 canonical function used in GNU programs. The new functions `err', `warn',
1800 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1801 doing the same thing.
1803 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1804 POSIX.2 `glob' function to do ~ and {...} expansion.
1806 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1807 `clearenv' which is used in POSIX.9 is also available.
1809 * New function `getsid' returns session ID number on systems that support it.
1811 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1812 files <db.h> and <mpool.h> provide a rich set of functions for several
1813 types of simple databases stored in memory and in files, and <ndbm.h> is
1814 an old `ndbm'-compatible interface using the `db' functions. Link with
1815 `-ldb' to get these functions.
1817 * New macro `strdupa' copies a string like `strdup', but uses local stack
1818 space from `alloca' instead of dynamic heap space from `malloc'.
1820 * New function `strnlen' is like `strlen' but searches only a given maximum
1821 number of characters for the null terminator. `stpncpy', `strndup' and
1822 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1825 * New function `statfs' in header <sys/statfs.h>.
1827 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1828 provide convenient functions for operating on blocks of null-terminated
1831 * A new suite of functions in <utmp.h> handle all the details of reading
1832 and writing the utmp file.
1834 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1837 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1838 completely POSIX compliant and also implemented the extended functionality
1839 to handle alternate digit representation and alternate era date formats.
1841 * Ulrich Drepper provided an implementation of the `strptime' function
1842 defined in XPG4.2 which transforms a string into a `struct tm' value.
1844 * Paul Eggert provided the tzselect shell script as part of the timezone
1845 code. The shell script makes it easy to select the correct timezone
1848 * The implementation of the malloc family of functions is completely replaced
1849 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1850 The implementation uses the mmap function (if available) and it is
1851 optimized for the use in multi threaded programs.
1853 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1854 functions. This new functionality is usable by specifying a special
1855 salt string and it is compatible with implementation on *BSD systems.
1857 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1858 `getsubopt' to handle second level command line options, `bsd_signal'
1859 to access BSD style `signal' functionality, the obsolete `regexp' style
1862 * the `lchown' function is available on system which support this
1865 * The implementation of the shadow password handling function was contributed
1868 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1870 * POSIX.1g support was added. The <sys/select.h> header is available,
1871 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1872 implementation of `getaddrinfo'.
1876 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1878 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1879 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1881 * The new function `daemon' from 4.4 BSD is useful for server programs that
1882 want to put themselves in the background.
1884 * Joel Sherrill has contributed support for several standalone boards that
1885 run without an operating system.
1887 * `printf', `scanf' and friends now accept a `q' type modifier for long
1888 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1890 * All of the code taken from BSD (notably most of the math and networking
1891 routines) has been updated from the BSD 4.4-Lite release.
1893 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1895 * The new functions `getdomainname' and `setdomainname' fetch or change the
1896 YP/NIS domain name. These are system calls which exist on systems which
1899 * The time zone data files have been updated for the latest international
1902 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1903 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1907 * The C library now includes support for Sun RPC, from Sun's free
1908 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1909 are included. (There is still no support for YP.)
1911 * Tom Quinn has contributed a port of the C library to SGI machines running
1912 Irix 4 (mips-sgi-irix4).
1914 * The new `lockf' function is a simplified interface to the locking
1915 facilities of `fcntl', included for compatibility.
1917 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1919 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1921 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1924 * The error message printed by `assert' for a failed assertion now includes
1925 the name of the program (if using GNU ld) and the name of the calling
1926 function (with versions of GCC that support this).
1928 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1930 * The library now includes the <sys/mman.h> header file and memory
1931 management functions `mmap', `munmap', `mprotect', `msync', and
1932 `madvise', on systems that support those facilities.
1934 * The interface for `mcheck' has changed slightly: the function called to
1935 abort the program when an allocation inconsistency is detected now takes
1936 an argument that indicates the type of failure. The new function
1937 `mprobe' lets you request a consistency check for a particular block at
1938 any time (checks are normally done only when you call `free' or `realloc'
1941 * It is now possible to easily cross-compile the C library, building on one
1942 system a library to run on another machine and/or operating system. All
1943 you need to do is set the variable `HOST_CC' in `configparms' to the
1944 native compiler for programs to run on the machine you are building on (a
1945 few generator programs are used on Unix systems); set `CC' to the
1948 * The new function `fexecve' (only implemented on the GNU system) executes
1949 a program file given a file descriptor already open on the file.
1953 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1954 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1956 * You can set the variable `libprefix' in `configparms' to specify a prefix
1957 to be prepended to installed library files; this makes it easy to install
1958 the GNU C library to be linked as `-lgnuc' or whatever.
1960 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
1961 copies a limited number of characters from a string, and returns the
1962 address of the last character written.
1964 * You no longer need to check for whether the installed `stddef.h' is
1965 compatible with the GNU C library. configure now checks for you.
1967 * You can now define a per-stream `fileno' function to convert the
1968 stream's cookie into an integral file descriptor.
1970 * ``malloc (0)'' no longer returns a null pointer. Instead, it
1971 allocates zero bytes of storage, and returns a unique pointer which
1972 you can pass to `realloc' or `free'. The behavior is undefined if
1973 you dereference this pointer.
1975 * The C library now runs on Sony NEWS m68k machines running either
1976 NewsOS 3 or NewsOS 4.
1978 * The new `syscall' function is a system-dependent primitive function
1979 for invoking system calls. It has the canonical behavior on Unix
1980 systems, including unreliable return values for some calls (such as
1981 `pipe', `fork' and `getppid').
1983 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
1984 to `EAGAIN', which is the preferred name. On systems whose kernels
1985 use two distinct codes, the C library now translates EWOULDBLOCK to
1986 EAGAIN in every system call function.
1990 * The GNU C Library Reference Manual is now distributed with the library.
1991 `make dvi' will produce a DVI file of the printed manual.
1992 `make info' will produce Info files that you can read on line using C-h i
1993 in Emacs or the `info' program.
1994 Please send comments on the manual to bug-glibc-manual@gnu.org.
1996 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
1998 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2000 * Jason Merrill has contributed a port to the Sequent Symmetry running
2001 Dynix version 3 (i386-sequent-dynix).
2003 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2004 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2006 * New function `memory_warnings' lets you arrange to get warnings when
2007 malloc is running out of memory to allocate, like Emacs gives you.
2009 * The C library now contains the relocating allocator used in Emacs 19 for
2010 its editing buffers. This allocator (ralloc) minimizes allocation
2011 overhead and fragmentation by moving allocated regions around whenever it
2012 needs to. You always refer to a ralloc'd region with a "handle" (a
2013 pointer to a pointer--an object of type `void **').
2015 * There is a new `printf' format: `%m' gives you the string corresponding
2016 to the error code in `errno'.
2018 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2019 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2020 pass, the `a' modifier says to fill in a `char **' you pass with a
2023 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2024 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2025 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2027 * `mkstemp' is a traditional Unix function to atomically create and open a
2028 uniquely-named temporary file.
2032 * The standard location for the file that says what the local timezone is
2033 has changed again. It is now `/usr/local/etc/localtime' (or more
2034 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2036 * The distribution no longer contains any files with names longer than 14
2039 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2040 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2042 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2046 * The configuration process has changed quite a bit. The `configure'
2047 script is now used just like the configuration scripts for other GNU
2048 packages. The `sysdeps' directory hierarchy is much rearranged.
2049 The file `INSTALL' explains the new scheme in detail.
2051 * The header files no longer need to be processed into ANSI C and
2052 traditional C versions. There is just one set of files to install, and
2053 it will work with ANSI or old C compilers (including `gcc -traditional').
2055 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2056 MIPS DECStation running Ultrix 4.
2058 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2059 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2060 made itself into a shared library.
2062 * Yet further improved support for the i386, running 4.3 BSD-like systems
2063 (such as Mach 3 with the Unix single-server), or System V.
2065 * New function `strncasecmp' to do case-insensitive string comparison
2066 with limited length.
2068 * New function `strsep' is a reentrant alternative to `strtok'.
2070 * New functions `scandir' and `alphasort' for searching directories.
2072 * New function `setenv' is a better interface to `putenv'.
2074 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2075 function for traversing a directory tree.
2077 * The GNU obstack package is now also part of the C library.
2078 The new function `open_obstack_stream' creates a stdio stream that
2079 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2080 formatted output directly to an obstack.
2082 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2083 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2085 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2087 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2088 things to your strings.
2090 * There are some new test programs: test-fseek, testmb, and testrand.
2092 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2093 These ports are not finished, but are a good starting place for really
2094 supporting those systems.
2096 * `/etc/localtime' is now the standard location for the file that says what
2097 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2098 This follows the general principle that `/etc' is the place for all local
2099 configuration files.
2101 * The C library header files now use `extern "C"' when used by the C++
2102 compiler, so the C library should now work with C++ code.
2104 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2105 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2108 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2109 function which uses the `merge sort' algorithm, and is said to be
2110 significantly faster than the old GNU `qsort' function. Merge sort is
2111 now the standard `qsort' function. The new algorithm can require a lot
2112 of temporary storage; so, the old sorting function is called when the
2113 required storage is not available.
2115 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2116 provides the Unix `crypt' function, plus some other entry points.
2118 * The code and header files taken from 4.4 BSD have been updated with the
2119 latest files released from Berkeley.
2121 ----------------------------------------------------------------------
2122 Copyright information:
2124 Copyright (C) 1992-2012 Free Software Foundation, Inc.
2126 Permission is granted to anyone to make or distribute verbatim copies
2127 of this document as received, in any medium, provided that the
2128 copyright notice and this permission notice are preserved,
2129 thus giving the recipient permission to redistribute in turn.
2131 Permission is granted to distribute modified versions
2132 of this document, or of portions of it,
2133 under the above conditions, provided also that they
2134 carry prominent notices stating who last changed them.
2137 version-control: never
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