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 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6778, 6808, 9685,
13 9914, 10014, 10038, 10631, 10873, 11438, 11607, 11638, 11741, 12140,
14 13412, 13542, 13601, 13603, 13604, 13629, 13679, 13696, 13698, 13717,
15 13741, 13759, 13763, 13939, 13950, 13952, 13966, 14042, 14047, 14090,
16 14150, 14151, 14152, 14154, 14157, 14166, 14173, 14195, 14237, 14251,
17 14252, 14283, 14298, 14303, 14307, 14328, 14331, 14336, 14337, 14347,
18 14349, 14368, 14376, 14417, 14459, 14476, 14477, 14501, 14505, 14510,
19 14516, 14518, 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557,
20 14562, 14568, 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621,
21 14638, 14645, 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694,
22 14716, 14719, 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797,
23 14801, 14805, 14807, 14809, 14811, 14815, 14821, 14824, 14828, 14831,
26 * Port to ARM AArch64 contributed by Linaro.
28 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
29 Optimized versions of memcpy, memset, and memcmp added for System z10 and
31 Implemented by Andreas Krebbel.
33 * The new function secure_getenv allows secure access to the environment,
34 returning NULL if running in a SUID/SGID process. This function replaces
35 the internal function __secure_getenv.
37 * SystemTap static probes have been added into the dynamic linker.
38 Implemented by Gary Benson.
40 * Optimizations of string functions strstr, strcasestr and memmem.
41 Implemented by Maxim Kuvyrkov.
43 * The minimum Linux kernel version that this version of the GNU C Library
44 can be used with is 2.6.16.
46 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
47 powerpc POWER7. Implemented by Will Schmidt.
49 * New configure option --disable-nscd builds the C library such that it
50 never attempts to contact the Name Service Caching Daemon (nscd).
51 New configure option --disable-build-nscd avoids building nscd itself;
52 this is the default if --disable-nscd is used.
54 * The ttyname and ttyname_r functions on Linux now fall back to searching for
55 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
56 allows creation of chroots without the procfs mounted on /proc.
58 * The `crypt' function now fails if passed salt bytes that violate the
59 specification for those values. On Linux, the `crypt' function will
60 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
61 enabled, and fail on encrypted strings using the MD5 or DES algorithm
62 when the mode is enabled.
64 * The `clock_*' suite of functions (declared in <time.h>) is now available
65 directly in the main C library. Previously it was necessary to link with
66 -lrt to use these functions. This change has the effect that a
67 single-threaded program that uses a function such as `clock_gettime' (and
68 is not linked with -lrt) will no longer implicitly load the pthreads
69 library at runtime and so will not suffer the overheads associated with
70 multi-thread support in other code such as the C++ runtime library.
74 * The following bugs are resolved with this release:
76 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
77 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
78 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
79 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
80 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
81 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
82 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
83 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
84 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
85 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
86 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658,
87 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739,
88 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806,
89 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871,
90 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895,
91 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
92 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
93 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973,
94 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040,
95 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075,
96 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134,
97 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273, 14277,
100 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
101 configuring glibc with:
102 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
103 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
104 Implemented by H.J. Lu.
108 + define static_assert
110 + do not declare gets
112 + declare at_quick_exit and quick_exit also for ISO C11
114 + aligned_alloc. NB: The code is deliberately allows the size parameter
115 to not be a multiple of the alignment. This is a moronic requirement
116 in the standard but it is only a requirement on the caller, not the
121 + uchar.h support added
123 + CMPLX, CMPLXF, CMPLXL added
125 Implemented by Ulrich Drepper.
127 * Support for the IA-64 has been moved to ports.
129 * Remove support for anything but ELF binary format
131 * Checking versions of poll, ppoll added.
132 Implemented by Ulrich Drepper.
134 * More generic and 64-bit performance optimizations to math functions.
135 Implemented by Ulrich Drepper.
137 * New configure option --enable-obsolete-rpc makes the deprecated RPC
138 headers and functions available at compile time as they were before
139 version 2.14. This option will be removed at some time in the future
140 after the TI-RPC library becomes fully sufficient for the needs of
141 existing applications.
143 * Compatibility code for Linux kernel versions before 2.4 has been removed.
144 Note that glibc is not expected to work with any Linux kernel version
147 * New header <sys/auxv.h> and function getauxval allowing easy access to
148 the AT_* key-value pairs passed from the Linux kernel. The header also
149 defines the HWCAP_* bits associated with the AT_HWCAP key.
151 * New locales: mag_IN
153 * New configure option --enable-systemtap builds SystemTap static probes
154 into libc for setjmp and longjmp and into libpthread for various operations.
155 So far the setjmp/longjmp probes and some of the libpthread probes are
156 provided only for i*86 and x86_64.
157 Implemented by Roland McGrath and Rayson Ho.
159 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
161 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
164 * More optimized functions for SPARC. Implemented by David S. Miller.
166 * Improved support for cross-compilation, especially bootstrap builds
167 without a previously built glibc.
169 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
170 Chris Metcalf from Tilera.
172 * Support for the old ARM ABI has been removed from ports. Only the EABI is
173 now supported for ARM processors.
175 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
176 as the name of the dynamic linker, to distinguish it from the
177 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
179 * Support for CRIS has been removed from ports.
181 * A new class of installed header has been documented for low-level
182 platform-specific functionality. PowerPC added the first instance with a
183 function to provide time base register access. Contributed by Tulio
184 Magno Quites Machado Filho.
186 * ix86 configurations now install header files that are consistent with
187 what x86-64 configurations install. These same header files can be used
188 for -m32, -m64, or -mx32 builds.
189 Contributed by H.J. Lu.
191 * Math library bug fixes. A thorough audit of all open math library bugs was
192 conducted by Joseph Myers. Significant progress was made on many math
193 library bugs resulting in more accurate exceptions and function results.
194 Many thanks to all those that contributed including Andreas Jaeger for his
195 patch review and work on the x87 trigonometric instruction issues.
197 * Timezone data is no longer installed. Timezone-related binaries and scripts
198 will continue to be installed. Users should obtain their timezone data from
199 their distribution provider or from the tzdata package at
200 <ftp://munnari.oz.au/pub/>.
204 * The following bugs are resolved with this release:
206 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
207 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
208 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
209 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
210 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
211 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
212 13484, 13506, 13515, 13523, 13524, 13538, 13540
214 * New program pldd to list loaded object of a process
215 Implemented by Ulrich Drepper.
217 * Add nss_db support back to glibc. No more dependency on Berkeley db
218 and support for initgroups lookups.
219 Implemented by Ulrich Drepper.
221 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
222 Contributed by HJ Lu.
224 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
225 Contributed by HJ Lu.
227 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
228 on x86-32 and x86-64.
229 Contributed by Liubov Dmitrieva.
231 * Optimized strchr and strrchr for SSE on x86-32.
232 Contributed by Liubov Dmitrieva.
234 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
235 for x86-64 and x86-32.
236 Contributed by Liubov Dmitrieva.
238 * New interfaces: scandirat, scandirat64
239 Implemented by Ulrich Drepper.
241 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
242 Implemented by Ulrich Drepper.
244 * nscd now also caches the netgroup database.
245 Implemented by Ulrich Drepper.
247 * Integrate libm with gcc's -ffinite-math-only option.
248 Implemented by Ulrich Drepper.
250 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
251 to math functions. Implemented by Ulrich Drepper.
253 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
254 Implemented by Ulrich Drepper.
256 * New Linux interfaces: process_vm_readv, process_vm_writev
258 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
259 Implemented by Ulrich Drepper.
261 * Optimized nearbyint and strcasecmp for PPC.
262 Implemented by Adhemerval Zanella.
264 * New locales: bho_IN, unm_US, es_CU, ta_LK
268 * The following bugs are resolved with this release:
270 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
271 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
272 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
273 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
274 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
275 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
276 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
277 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
278 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
279 12795, 12811, 12813, 12814, 12841
281 * The RPC implementation in libc is obsoleted. Old programs keep working
282 but new programs cannot be linked with the routines in libc anymore.
283 Programs in need of RPC functionality must be linked against TI-RPC.
284 The TI-RPC implementation is IPv6 enabled and there are other benefits.
286 Visible changes of this change include (obviously) the inability to link
287 programs using RPC functions without referencing the TI-RPC library and the
288 removal of the RPC headers from the glibc headers.
289 Implemented by Ulrich Drepper.
291 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
292 syncfs, setns, sendmmsg
294 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
295 yue_HK, lij_IT, mhr_RU
297 * New encodings: CP770, CP771, CP772, CP773, CP774
299 * New program sotruss to trace calls through PLTs
300 Implemented by Ulrich Drepper.
302 * The malloc hook implementation is marked deprecated and will be removed
303 from the default implementation in the next version. The design never
304 worked ever since the introduction of threads. Even programs which do
305 not create threads themselves can use multiple threads created internally.
309 * The following bugs are resolved with this release:
311 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
312 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
313 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
314 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
317 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
319 * POWER7 optimizations: memset, memcmp, strncmp
321 * New optimized string functions for x86-64: strnlen (SSE2),
322 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
323 Implemented by Ulrich Drepper.
327 * The following bugs are resolved with this release:
329 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
330 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
331 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
332 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
333 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
334 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
335 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
336 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
338 * New interfaces: pthread_getname_np, pthread_setname_np
340 * New Linux interface: recvmmsg
342 * STT_GNU_IFUNC implemented for Sparc by David Miller.
344 * The dynamic linker now recognizes supported ABI versions from the
345 EI_ABIVERSION field in the ELF header.
346 Implemented by Ulrich Drepper.
348 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
349 will not be used to fill in password fields in the passwd.byname replies.
350 Instead it is used to synthesize the shadow.byname table, should it be
351 missing. This is a useful mode in some installations involving Solaris.
352 Implemented by Ulrich Drepper.
354 * New locales: kok_IN, sq_MK, cv_RU
358 * The following bugs are resolved with this release:
360 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
361 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
362 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
363 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
364 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
365 10789, 10817, 10823, 10840, 10847
367 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
369 Implemented by Ulrich Drepper.
371 * Checking version of longjmp added that fails if an uninitialized stack
372 frame would be created. Implemented by Ulrich Drepper.
374 * STT_GNU_IFUNC is now supported in static executables.
375 Implemented by H.J. Lu.
377 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
379 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
380 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
381 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
382 Contributed by H.J. Lu.
384 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
385 Implemented by Ulrich Drepper.
387 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
389 Contributed by H.J. Lu.
391 * Support for fma instruction in AVX on x86-64.
392 Implemented by H.J. Lu and Ulrich Drepper.
394 * AVX support in x86-64 auditing support in ld.so.
395 Implemented by H.J. Lu.
397 * STB_GNU_UNIQUE support added.
398 Implemented by Ulrich Drepper.
400 * Implement second fallback mode for optimized DNS lookup for even more
401 broken environments. If two requests from the same port are not
402 handled correctly close the socket and open a new one before sending
403 the second request. The 'single-request-reopen' option in /etc/resolv.conf
404 can be used to select this mode right away, instead of rediscovering the
405 necessity is every process again.
406 Implemented by Ulrich Drepper.
408 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
409 Implemented by Adam Tkac.
411 * Optimized iconv conversions for S390x.
412 Implemented by Andreas Krebbel.
414 * Using condvars with PI mutexes is now more efficient due to kernel
415 support for requeueing to PI futexes. NPTL support added for x86-64.
416 Implemented by Ulrich Drepper.
418 * New locales: ps_AF, my_MM
422 * The following bugs are resolved with this release:
424 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
425 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
426 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
427 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
428 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
430 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
431 Implemented by Ulrich Drepper.
433 * New Linux interfaces: accept4, fallocate, fallocate64.
434 Implemented by Ulrich Drepper.
436 * Correct declarations of string function when used in C++ code. This
437 could lead to compile errors for invalid C++ code.
439 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
442 * New POSIX 2008 interface: psiginfo
443 Implemented by Ulrich Drepper.
445 * New ISO C++1x interfaces: quick_exit, at_quick_exit
446 Implemented by Ulrich Drepper.
448 * Support for selecting between multiple function definitions at runtime
449 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
451 * The libcrypt library can now use the hash function implementations in
452 NSS. Implemented by Ulrich Drepper.
454 * The malloc implementation can be compiled to be less memory efficient
455 but higher performing in multi-threaded programs.
456 Implemented by Ulrich Drepper.
458 * New locales: nan_TW@latin, ks_IN
460 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
461 Implemented by Ulrich Drepper.
463 * Extended printf hook support. It is possible to use user-defined types
464 and extend existing format specifiers.
465 Implemented by Ulrich Drepper.
467 * Handling for group shadow files has been added.
468 Implemented by Ulrich Drepper.
470 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
471 servers (the case, e.g., for some people using the built-in DNS
472 server in ADSL modems/routers). There is a once-per-process timeout
473 in case of a broken server. To avoid it, users can run nscd or put
474 'options single-request' in /etc/resolv.conf.
475 Implemented by Ulrich Drepper.
479 * The following bugs are resolved with this release:
481 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
482 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
483 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
484 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
485 6968, 6974, 6980, 6995, 7008, 7009, 7029
487 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
488 up at the same time. Implemented by Ulrich Drepper.
490 * TLS descriptors for LD and GD on x86 and x86-64.
491 Implemented by Alexandre Oliva.
493 * getaddrinfo now handles DCCP and UDPlite.
494 Implemented by Ulrich Drepper.
496 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
497 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
498 Implemented by Ulrich Drepper.
500 * New implementation of memmem, strstr, and strcasestr which is O(n).
501 Implemented by Eric Blake.
503 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
505 * Implement "e" option for popen to open file descriptor with the
506 close-on-exec flag set. Implemented by Ulrich Drepper.
508 * Implement "b" mode for fmemopen. In this mode writes writes don't
509 implicitly add a NUL byte and seeks from the end of the buffer really
510 use the buffer end, not the string length as the basis.
511 Implemented by Ulrich Drepper.
513 * Many functions, exported and internal, now atomically set the close-on-exec
514 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
516 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
518 Implemented by Pravin Satpute.
520 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
524 * The following bugs are resolved with this release:
526 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
527 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
528 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
529 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
530 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
531 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
532 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
534 * New locales: bo_CN, bo_IN, shs_CA.
536 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
538 * Sorting rules for some Indian languages (Devanagari and Gujarati).
539 Implemented by Pravin Satpute.
541 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
543 * nscd caches now all timeouts for DNS entries
544 Implemented by Ulrich Drepper.
546 * nscd is more efficient and wakes up less often.
547 Implemented by Ulrich Drepper.
549 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
550 vdprintf, and obstack_vprintf.
551 Implemented by Jakub Jelinek.
553 * Faster memset for x86-64.
554 Implemented by Harsha Jagasia and H.J. Lu.
556 * Faster memcpy on x86.
557 Implemented by Ulrich Drepper.
559 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
560 Implemented by Ulrich Drepper.
562 * Faster sqrt and sqrtf implemention for some PPC variants.
563 Implemented by Steven Munroe.
567 * The following bugs are resolved with this release:
569 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
570 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
571 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
572 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
573 5071, 5103, 5104, 5112, 5113, 5184, 5186
575 * More checking functions: fread, fread_unlocked, open*, mq_open.
576 Implemented by Jakub Jelinek and Ulrich Drepper.
578 * Extend fortification to C++. Implemented by Jakub Jelinek.
580 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
581 by not recognizing 'a' as a modifier when those specs are requested.
582 Implemented by Jakub Jelinek.
584 * PPC optimizations to math and string functions.
585 Implemented by Steven Munroe.
587 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
588 options to be passed. Implemented by Ulrich Drepper.
590 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
592 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
593 Implemented by Ulrich Drepper.
595 * Handle private futexes in the NPTL implementation.
596 Implemented by Jakub Jelinek and Ulrich Drepper.
598 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
599 Implemented by Roland McGrath and Ulrich Drepper.
601 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
603 * SHA-256 and SHA-512 based password encryption.
604 Implemented by Ulrich Drepper.
606 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
607 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
610 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
611 Implemented by Ulrich Drepper.
615 * The following bugs are resolved with this release:
617 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
618 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
619 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
620 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
621 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
622 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
623 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
626 * New Linux interfaces: epoll_pwait, sched_getcpu.
628 * New generic interfaces: strerror_l.
630 * nscd can now cache the services database. Implemented by Ulrich Drepper.
634 * The following bugs are resolved with this release:
636 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
637 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
638 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
639 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
640 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
641 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
642 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
643 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
644 3225, 3251, 3252, 3253, 3273
646 * For Linux, the sorting of addresses returned by getaddrinfo now also
647 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
648 Implemented by Ulrich Drepper.
650 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
651 Implemented by Ulrich Drepper.
653 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
655 * New iconv module for MIK. Contributed by Alexander Shopov.
657 * For sites with broken group and/or passwd database, the auto-propagate
658 option of nscd can prevent creating ID lookup entries from the results
659 of a name lookup and vice versa. This usually is no problem but some
660 site might have problems with the default behavior.
661 Implemented by Ulrich Drepper.
663 * Iterating over entire database in NIS can be slow. With the
664 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
665 to trade time for memory. The entire database will be read at once.
666 Implemented by Ulrich Drepper.
668 * The interfaces introduced in RFC 3542 have been implemented by
671 * Support for the new ELF hash table format was added by Ulrich Drepper.
673 * Support for priority inheritance mutexes added by Jakub Jelinek and
676 * Support for priority protected mutexes added by Jakub Jelinek.
678 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
679 or_IN, csb_PL, fy_NL, sr_ME.
683 * More overflow detection functions.
685 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
686 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
688 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
689 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
690 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
691 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
692 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
693 by Masahide Washizawa.
695 * It is now possible to install audit libraries for the dynamic linker using
696 LD_AUDIT. Implemented by Ulrich Drepper.
698 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
699 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
700 For a libc and libpthread that works well on Linux 2.4 kernels, we
701 recommend using the stable 2.3 branch.
703 * The new function open_wmemstream acts like open_memstream,
704 but uses a wchar_t wide character buffer.
706 * The new function ppoll is an improved version of poll, similar to pselect.
708 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
709 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
710 renameat, unlinkat, linkat, symlinkat, readlinkat.
712 * New Linux kernel system calls: unshare,
713 inotify_init, inotify_add_watch, inotify_rm_watch.
715 * The euidaccess function is now also known by the alias eaccess,
716 for compatibility with some other systems.
718 * Timezone data updated to 2006b version.
722 * The following bugs are resolved with this release:
724 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
725 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
726 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
727 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
728 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
729 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
731 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
733 * As of this release, GCC 4 can be used to compile the C Library.
735 * Timezone data updated to 2005m version.
739 * The following bugs are resolved with this release:
741 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
742 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
743 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
744 777, 787, 821, 822, 823, 825
746 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
750 * Support for RFC 3678. Real implementations exist only for Linux so far.
751 Implemented by Ulrich Drepper.
753 * nscd can now cache entries persistently. Expiring entries are reloaded.
754 For speedups the cache can be shared in memory with client processes.
755 Implemented by Ulrich Drepper.
757 * nscd can now perform SELinux checks.
758 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
760 * getaddrinfo queries are now cached. Canonical name lookup is performed
762 Implemented by Ulrich Drepper.
764 * The nothrow function attribute is used when headers are used by gcc when
765 compiling C code. This can avoid significant amounts of exception
768 * The malloc functions perform more error checking and are stricter when
769 it comes to reacting on errors. The default action is to terminate
770 the process after showing an error message. Implemented by Ulrich Drepper.
772 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
773 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
775 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
776 namespaces using the new function dlmopen(). This feature is of course,
777 like most other dynamic loading functionality, not available in statically
778 linked applications. Implemented by Ulrich Drepper.
780 * Low-overhead boundary checking variants of string and some stdio functions
781 were added. These are to be used in conjunction with a gcc patch by
782 Jakub Jelinek which adds calls to these functions if possible.
783 Implemented by Jakub Jelinek and Ulrich Drepper.
785 * Old code for several operating systems and machine architectures that
786 have not been in working condition in a long time have been removed from
787 the main source tree maintained by the GNU C Library's maintainers.
788 These files are now reside in the separate `ports' source module
789 that is usable as an add-on when building the library.
793 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
794 interrogate the dynamic linker, compatible with the Solaris interface.
796 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
797 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
799 * getifaddrs now uses the netlink interface on Linux to get its information.
800 Implemented by Thorsten Kukuk.
802 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
803 Implemented by Ulrich Drepper.
805 * support for non-executable stacks on x86 has been added. Changes mostly
808 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
811 * getaddrinfo now performs destination address selection according to
816 * Thread-safe interfaces for many functions that access locale data
817 were added in version 2.3, but these features were omitted from NEWS.
818 Many functions have variants with an `_l' suffix that take a `locale_t'
819 object as a parameter rather than consulting the current locale.
820 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
821 create and maintain `locale_t' objects. Additionally, the new function
822 `uselocale' sets "the current locale" (as used by functions not so
823 parameterized) set for an individual thread. These features were added
824 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
826 * The functions getresuid, getresgid, setresuid, and setresgid, which
827 have long been available on Linux, are now declared in <unistd.h>
828 and are now also available on the Hurd.
830 * ELF thread-local storage support (TLS) now works on x86-64.
832 * The new dynamic string token $LIB is expanded in shared library names.
833 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
835 * Aldy Hernandez contributed complete software floating point support for
836 PowerPC machines with no FPU.
838 * fexecve is implemented on Linux.
840 * The `btowc' function should work at least twice as fast due to
841 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
843 * With approriate thread add-ons cancelable functions are now implemented
844 in libc.so as well. No need to call the function in libpthread. This
845 change allowed to finally disable the incorrect and expensive handling
846 of weak definition in ld.so.
848 * Yet more PLT entries in libc.so have been removed. We finally arrived
849 at the bare minimum. Startup times improved appropriately.
851 * Support for the new Linux/x86 system call interface was added. The
852 AT_SYSINFO auxiliary vector entry is recognized and handled.
856 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
859 * iconv (the program and the interface) now accepts empty names (excluding
860 options like //TRANSLIT) to mean "use charset of current locale".
862 * localedef can now transliterate characters in strings which are not in
863 the provided charmap. The information from the input locale is used.
865 * Prelinking support was added for ELF targets. This requires additional
866 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
868 * Read-only stdio streams now use mmap to speed up operation by eliminating
869 copying and buffer underflows. To use add 'm' to the mode string of
870 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
872 * The malloc functions were completely rewritten by Wolfram Gloger based
873 on Doug Lea's malloc-2.7.0.c.
875 * Isamu Hasegawa contributed a completely new and POSIX-conformant
876 implementation of regex.
878 * Bruno Haible upgraded the iconv and locale implementation to support
881 * Contents of the LC_* and LANG environment variables in the CEN style are
882 not recognized anymore. It never was used. Change by Ulrich Drepper.
884 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
885 thread-local storage (TLS) ABI on some platforms.
886 Changes by Ulrich Drepper. SH support by Kaz Kojima.
888 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
889 EUC-JISX0213, and TSCII.
891 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
892 BSD-compatible interface for getting all network interface addresses.
893 Implementation for IPv4 by Roland McGrath.
895 * Loading of locale data is faster due to the introduction of a locale
896 archive. Implemented by Roland McGrath and Ulrich Drepper.
898 * Startup times are significantly reduced by not using exported functions
899 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
902 * Steven Munroe contributed a port to PowerPC64/Linux.
906 * The Hurd now uses the GNU libio implementation of stdio rather than the
907 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
909 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
910 with the same behavior as the Linux system call of the same name.
914 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
915 128-bit long double format.
917 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
918 IBM1161, and IBM1162 charsets.
920 * Andreas Jaeger contributed a port to x86-64/Linux.
922 * Peter Bruin contributed a port to PowerPC/Hurd.
924 * libc functions using I/O streams now can handle wide-oriented streams
927 * optimizations in the dynamic linker. Binaries created by recent binutils
928 versions start up quicker due to reduced time spent on relocations.
930 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
934 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
935 asinh, atanh, j0 for the 128-bit long double format.
937 * Bruno Haible updated all the code handling Unicode in some form to
940 * Speed of regex for single-byte locales is back to previous levels.
941 Patch by Isamu Hasegawa.
943 * Alpha, SPARC, and IA-64 now also using floating stacks.
945 * Startup time of internationalized applications greatly improved through
946 iconv cache. Use iconvconfig to generate the cache file.
947 Contributed by Ulrich Drepper.
949 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
950 severe performance problems. Patch by David Mosberger.
952 * The Hurd port got a lot more functionality like AIO, various stdio
953 extensions, etc. Mainly done by Roland McGrath.
955 * mtrace can now lookup symbols in shared libraries.
959 * Intel's IA-64 math library is largely integrated. It provides fast and
960 accurate implementatations for most basic and standard math functions
961 in float, double, and long double format.
963 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
964 and asin for the 96-bit long double format and asin, log, tan for the
965 128-bit long double format.
967 * The beginning of a last-bit accurate math library by IBM Haifa were added.
968 The basic double functions exist today. Contributed by Abraham Ziv
969 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
970 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
972 * An asynchronous name lookup library was added. The interface is designed
973 after POSIX AIO. The proposal was circulated beforehand to get comments.
974 No negative ones came in. Implemented by Ulrich Drepper.
976 * Port to S390/64bit contributed by Martin Schwidefsky
977 <schwidefsky@de.ibm.com>.
979 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
980 of functions for Linux/IA-64.
982 * The RPC code is now thread safe. Threads can now use the same service
983 of different services at the same time. Patch by Eric Norum
984 <eric.norum@usask.ca> with some help by Ulrich Drepper.
986 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
987 family of functions for Linux/S390.
989 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
990 of functions for Linux/x86.
992 * Port to Linux/CRIS contributed by Axis Communications.
996 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
997 we can now check for namespace violations and missing declarations. The
998 result is that almost all headers are now Unix-compliant (as defined in
999 the upcoming XPG6). The negative side is that some programs might need
1000 corrections, too, if they depend on the incorrect form of the headers in
1001 previous versions which defined too many symbols and included too many
1004 * regex now handles multibyte character sets correctly.
1005 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1007 * iconv (the program) does now conform to the upcoming XPG6 and handles
1008 charmaps. Instead of the charset names the path of charmaps can be
1009 provided and the conversion happens based on this data.
1010 Contributed by Ulrich Drepper.
1012 * The locale program now provides detailed information about the installed
1017 only lists the names of the supported locales
1021 provides details such as country, language, and codeset name.
1022 Contributed by Ulrich Drepper.
1026 * The gencat program now parses the input file according to the charset
1027 selected by the LC_CTYPE category. This is important for stateful
1028 character sets. To make generating catalogs easier there is a way
1029 to overwrite the charset selected by the locale: before the first
1030 message or $ quote line the catalog can contain a line like
1032 $ codeset=ISO-8859-2
1034 to select the charset (ISO-8859-2 in this case).
1036 Implemented by Shinya Hanataka and Ulrich Drepper.
1038 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1039 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1040 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1042 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1043 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1045 * The LANGUAGE environment variable is now ignored unless the locale is
1046 changed from the default "C" locale.
1048 * The usual bug fixes.
1052 * Greg McGary added runtime support for bounds checking using gcc's
1053 new -fbounded-pointers option. ix86 target is complete. PowerPC
1056 * Thorsten Kukuk added secure mode support to nscd.
1058 * The Berkeley db libraries have been removed.
1060 Related, the nss_db module is now in a separate package since it
1061 obviously requires a database library being available.
1063 * Wide character I/O streams implemented by Ulrich Drepper.
1065 * Functions from the extended socket API added by Ulrich Drepper.
1067 * Functions feenableexcept and fedisableexcept to control the
1068 behaviour of individual exceptions have been added by Andreas Jaeger.
1070 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1072 * The resolver code has been updated from bind 8.2.3-T5B which supports
1073 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1076 This change could in some situations effect backward compatibility. Since
1077 now `_res' is a thread-local instead of a global variable, modifying it
1078 in one thread does not have any effect in other threads.
1080 The resolver library was also extended to allow IPv6 as the transport
1081 protocol for the requests. This work was done by Stig Venaas.
1083 * Compatibility code for K&R C compilers has been removed from the
1084 header files. A ISO C compiler is needed to use the library
1085 (conforming to either C89 or C99 standard).
1087 * Complete rewrite of the localedef program to support multibyte character
1088 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1089 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1090 Implemented by Ulrich Drepper.
1092 Bruno Haible significantly improved the generation and use of the data
1093 structures for the wide character tables.
1095 * Plural handling in gettext implemented by Ulrich Drepper.
1097 * The utmp daemon has been removed.
1099 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1101 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1104 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1106 * POSIX barriers implemented by Kaz Kylheku.
1108 * POSIX spawn function family implemented by Ulrich Drepper.
1110 * POSIX spinlocks are now available.
1112 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1114 * the configure option --enable-kernel=X.Y.Z allows to strip out
1115 compatibility for kernel versions before X.Y.Z. This is currently only
1116 implemented for Linux.
1118 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1119 field sin6_scope_id. This means that all programs using IPv6 should be
1120 recompiled. Don't expect binary compatibility with previous glibc
1123 * various conversion modules for IBM character sets contributed by
1126 * IA-64 port by Jes Sorensen and HJ Lu.
1140 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1142 * New xdr functions are added; some rpc functions are now 64bit clean.
1144 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1146 * Fixed known incompatibilities with glibc 2.0.
1148 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1150 * Optimized a number of functions (especially the ELF dynamic loader).
1152 * Update timezone data files.
1154 * lots of charmaps corrections
1156 * some new locale definitions and charmaps
1161 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1162 conform to POSIX member type requirements. Symbol versions have been
1163 adjusted as needed within the library, and for direct use by applications,
1164 but there is potential for problems if third-party libraries use
1165 struct timeval as part of their interface. This does not present
1166 a problem for X and other "essential" system libraries.
1168 * An additional locale model to support C++ Standard Library locale
1169 model and probably more was implemented by Ulrich Drepper.
1171 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1174 * Miles Bader provided the `argp' function family to support hierachical
1175 command line argument parsing, layered on top of getopt.
1177 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1179 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1182 * scanf recognizes the %a and %A format for scanning floating point numbers.
1184 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1185 information and interfaces for the available integer types.
1187 * about 130 new math functions were added to implement the ISO C9x math
1190 * the new header <complex.h> contains definitions of the complex math
1191 functions from ISO C 9X.
1193 * the new header <tgmath.h> defines generic macros to use complex or
1194 real valued functions.
1196 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1198 * Andreas Jaeger provided a test suite for the math library.
1200 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1202 * Ulrich Drepper added character set conversion functions (iconv).
1204 * Optimized string functions have been added.
1206 * The localedata addon is now part of glibc.
1208 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1210 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1211 daemon for NSS (nscd).
1213 Missing a better place here are some numbers on improvements. Under
1214 Linux 2.1.125 un-tar-ing the kernel sources takes
1218 using local files 12.19s 6.88s 22.91s
1220 using NIS 13.92s 8.91s 26.34s
1222 using NIS & nscd 10.37s 7.34s 25.30s
1224 using NIS+ 27.57s 30.37s 640.46s
1226 using NIS+ & nscd 10.25s 7.83s 26.51s
1228 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1230 Keep in mind that non-namelookup related operations dominate above times.
1231 It was just a common complain that using NIS+ unpacking the kernel is
1234 [1] The old nscd implementation is not available anymore since it was
1235 distributed with glibc up to version 2.0.98 and thus is now replaced.
1237 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1239 * Mark Kettenis provided a Hesiod NSS module.
1241 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1242 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1244 * rcmd can now handle netgroups (Dick Streefland).
1246 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1249 * Support for the IPv6 protocol has been added to the socket API, as per the
1250 latest draft standards.
1252 * Support for Linux 2.2 has been added.
1254 * Interface changes relative to the latest 2.0.x release:
1255 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1256 addseverity NEW: Unix98
1257 alphasort64 NEW: LFS
1258 argp_err_exit_status NEW: argp, GNU ext
1259 argp_error NEW: argp, GNU ext
1260 argp_failure NEW: argp, GNU ext
1261 argp_help NEW: argp, GNU ext
1262 argp_parse NEW: argp, GNU ext
1263 argp_program_bug_address NEW: argp, GNU ext
1264 argp_program_version NEW: argp, GNU ext
1265 argp_program_version_hook NEW: argp, GNU ext
1266 argp_state_help NEW: argp, GNU ext
1267 argp_usage NEW: argp, GNU ext
1268 authdes_create NEW: Secure RPC
1269 authdes_getucred NEW: Secure RPC
1270 authdes_pk_create NEW: Secure RPC
1271 backtrace NEW: GNU ext.
1272 backtrace_symbols NEW: GNU ext.
1273 backtrace_symbols_fd NEW: GNU ext.
1275 cacosf NEW: ISO C 9x
1276 cacosh NEW: ISO C 9x
1277 cacoshf NEW: ISO C 9x
1278 cacoshl NEW: ISO C 9x
1279 cacosl NEW: ISO C 9x
1286 casinf NEW: ISO C 9x
1287 casinh NEW: ISO C 9x
1288 casinhf NEW: ISO C 9x
1289 casinhl NEW: ISO C 9x
1290 casinl NEW: ISO C 9x
1292 catanf NEW: ISO C 9x
1293 catanh NEW: ISO C 9x
1294 catanhf NEW: ISO C 9x
1295 catanhl NEW: ISO C 9x
1296 catanl NEW: ISO C 9x
1297 cbc_crypt NEW: Secure RPC
1301 ccoshf NEW: ISO C 9x
1302 ccoshl NEW: ISO C 9x
1308 cimagf NEW: ISO C 9x
1309 cimagl NEW: ISO C 9x
1310 clearerr_locked REMOVED
1311 clntunix_create NEW: sunrpc ext
1313 clog10 NEW: ISO C 9x
1314 clog10f NEW: ISO C 9x
1315 clog10l NEW: ISO C 9x
1325 cprojf NEW: ISO C 9x
1326 cprojl NEW: ISO C 9x
1328 crealf NEW: ISO C 9x
1329 creall NEW: ISO C 9x
1334 csinhf NEW: ISO C 9x
1335 csinhl NEW: ISO C 9x
1338 csqrtf NEW: ISO C 9x
1339 csqrtl NEW: ISO C 9x
1343 ctanhf NEW: ISO C 9x
1344 ctanhl NEW: ISO C 9x
1346 des_setparity NEW: Secure RPC
1347 ecb_crypt NEW: Secure RPC
1348 endutxent NEW: Unix98
1350 exp10f NEW: ISO C 9x
1351 exp10l NEW: ISO C 9x
1355 fattach NEW: STREAMS
1356 fdetach NEW: STREAMS
1360 feclearexcept NEW: ISO C 9x
1361 fegetenv NEW: ISO C 9x
1362 fegetexceptflag NEW: ISO C 9x
1363 fegetround NEW: ISO C 9x
1364 feholdexcept NEW: ISO C 9x
1366 feraiseexcept NEW: ISO C 9x
1367 ferror_locked REMOVED
1368 fesetenv NEW: ISO C 9x
1369 fesetexceptflag NEW: ISO C 9x
1370 fesetround NEW: ISO C 9x
1371 fetestexcept NEW: ISO C 9x
1372 feupdateenv NEW: ISO C 9x
1373 fflush_locked REMOVED
1377 fgets_unlocked NEW: GNU ext.
1378 fileno_locked REMOVED
1390 fputc_locked REMOVED
1391 fputs_unlocked NEW: GNU ext.
1392 fread_unlocked NEW: GNU ext.
1397 fstatvfs NEW: Unix98
1401 ftruncate64 NEW: LFS
1403 fwrite_unlocked NEW: GNU ext.
1404 gai_strerror NEW: IPv6
1408 getchar_locked REMOVED
1410 getdate_err NEW: Unix98
1411 getdate_r NEW: GNU ext.
1413 getnameinfo NEW: IPv6
1414 getnetname NEW: Secure RPC
1415 getpmsg NEW: STREAMS
1416 getpt NEW: Unix98 PTY
1417 getrlimit64 NEW: LFS
1418 getutxent NEW: Unix98
1419 getutxid NEW: Unix98
1420 getutxline NEW: Unix98
1421 glob64 NEW: GNU ext.
1422 globfree64 NEW: GNU ext.
1423 gnu_get_libc_release NEW: GNU ext.
1424 gnu_get_libc_version NEW: GNU ext.
1425 grantpt NEW: Unix98 PTY
1426 host2netname NEW: Secure RPC
1428 iconv_close NEW: iconv
1429 iconv_open NEW: iconv
1430 if_freenameindex NEW: IPv6
1431 if_indextoname NEW: IPv6
1432 if_nameindex NEW: IPv6
1433 if_nametoindex NEW: IPv6
1434 in6addr_any NEW: IPv6
1435 in6addr_loopback NEW: IPv6
1436 inet6_isipv4mapped NEW: IPv6
1437 isastream NEW: STREAMS
1438 iswblank NEW: GNU ext.
1439 key_decryptsession NEW: Secure RPC
1440 key_decryptsession_pk NEW: Secure RPC
1441 key_encryptsession NEW: Secure RPC
1442 key_encryptsession_pk NEW: Secure RPC
1443 key_gendes NEW: Secure RPC
1444 key_get_conv NEW: Secure RPC
1445 key_secretkey_is_set NEW: Secure RPC
1446 key_setnet NEW: Secure RPC
1447 key_setsecret NEW: Secure RPC
1448 llrint NEW: ISO C 9x
1449 llrintf NEW: ISO C 9x
1450 llrintl NEW: ISO C 9x
1451 llround NEW: ISO C 9x
1452 llroundf NEW: ISO C 9x
1453 llroundl NEW: ISO C 9x
1458 lrintf NEW: ISO C 9x
1459 lrintl NEW: ISO C 9x
1460 lround NEW: ISO C 9x
1461 lroundf NEW: ISO C 9x
1462 lroundl NEW: ISO C 9x
1464 makecontext NEW: Unix98
1465 mempcpy NEW: GNU ext.
1468 modify_ldt NEW: kernel
1472 nearbyint NEW: ISO C 9x
1473 nearbyintf NEW: ISO C 9x
1474 nearbyintl NEW: ISO C 9x
1475 netname2host NEW: Secure RPC
1476 netname2user NEW: Secure RPC
1477 nexttoward NEW: ISO C 9x
1478 nexttowardf NEW: ISO C 9x
1479 nexttowardl NEW: ISO C 9x
1483 passwd2des NEW: Secure RPC
1485 pow10f NEW: GNU ext.
1486 pow10l NEW: GNU ext.
1489 printf_size NEW: GNU ext.
1490 printf_size_info NEW: GNU ext.
1491 profil_counter REMOVED
1492 pthread_mutexattr_getkind_np REPLACED
1493 pthread_mutexattr_setkind_np REPLACED
1494 ptsname NEW: Unix98 PTY
1495 ptsname_r NEW: Unix98 PTY
1497 putchar_locked REMOVED
1498 putgrent NEW: GNU ext.
1500 putpmsg NEW: STREAMS
1501 pututxline NEW: Unix98
1505 readdir64_r NEW: LFS
1506 remquo NEW: ISO C 9x
1507 remquof NEW: ISO C 9x
1508 remquol NEW: ISO C 9x
1510 roundf NEW: ISO C 9x
1511 roundl NEW: ISO C 9x
1513 scalbln NEW: ISO C 9x
1514 scalblnf NEW: ISO C 9x
1515 scalblnl NEW: ISO C 9x
1517 sendfile NEW: kernel
1518 setcontext NEW: Unix98
1519 setrlimit64 NEW: LFS
1520 setutxent NEW: Unix98
1522 sigignore NEW: Unix98
1523 sigqueue NEW: POSIX.1b
1524 sigrelse NEW: Unix98
1525 sigset NEW: POSIX.1b
1526 sigtimedwait NEW: POSIX.1b
1527 sigwaitinfo NEW: POSIX.1b
1528 sincos NEW: GNU ext.
1529 sincosf NEW: GNU ext.
1530 sincosl NEW: GNU ext.
1534 strcasestr NEW: GNU ext.
1535 strtoimax NEW: ISO C 9x
1536 strtoumax NEW: ISO C 9x
1537 strverscmp NEW: GNU ext.
1538 svcauthdes_stats NEW: Secure RPC
1539 svcunix_create NEW: sunrpc etx
1540 svcunixfd_create NEW: sunrpc ext
1541 swapcontext NEW: Unix98
1542 tcgetsid NEW: Unix98 PTY
1543 tdestroy NEW: GNU ext.
1544 tgamma NEW: ISO C 9x
1545 tgammaf NEW: ISO C 9x
1546 tgammal NEW: ISO C 9x
1550 truncf NEW: ISO C 9x
1551 truncl NEW: ISO C 9x
1553 unlockpt NEW: Unix98 PTY
1554 updwtmpx NEW: Unix98
1555 user2netname NEW: Secure RPC
1556 utmpxname NEW: Unix98
1557 versionsort NEW: GNU ext.
1558 versionsort64 NEW: GNU ext.
1560 wcscasecmp NEW: GNU ext.
1561 wcsncasecmp NEW: GNU ext.
1562 wcsnlen NEW: GNU ext.
1563 wcstoimax NEW: ISO C 9x
1564 wcstoll NEW: ISO C 9x
1565 wcstoull NEW: ISO C 9x
1566 wcstoumax NEW: ISO C 9x
1568 wordexp NEW: POSIX.2
1569 wordfree NEW: POSIX.2
1570 write_profiling REMOVED
1571 xdecrypt NEW: Secure RPC
1572 xdr_authdes_cred NEW: Secure RPC
1573 xdr_authdes_verf NEW: Secure RPC
1574 xdr_cryptkeyarg NEW: Secure RPC
1575 xdr_cryptkeyarg2 NEW: Secure RPC
1576 xdr_cryptkeyres NEW: Secure RPC
1577 xdr_getcredres NEW: Secure RPC
1578 xdr_key_netstarg NEW: Secure RPC
1579 xdr_key_netstres NEW: Secure RPC
1580 xdr_keybuf NEW: Secure RPC
1581 xdr_keystatus NEW: Secure RPC
1582 xdr_netnamestr NEW: Secure RPC
1583 xdr_sizeof NEW: Secure RPC
1584 xdr_unixcred NEW: sunrpc ext
1585 xencrypt NEW: Secure RPC
1586 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1597 * inet_ntoa is thread-safe
1599 * updwtmp is moved from libutil to libc
1601 * rewrite of cbrt function
1603 * update of timezone data
1617 * add atoll function
1619 * fix complex problems in Berkeley DB code
1621 * fix math functions
1625 * fixed lots of header problems (especially Linux/GNU specific)
1627 * dynamic loader preserves all registers
1629 * Roland McGrath provided support for handling of auxiliary objects in
1630 the ELF dynamic loader.
1632 * support for parallel builds is improved
1636 * GNU extensions are no longer declared by default. To enable them you
1637 must define the macro `_GNU_SOURCE' in your program or compile with
1640 * The library has changed from using GNU ld symbol aliases to using weak
1641 symbols where available. The ELF object file format supports weak
1642 symbols; GNU ld also supports weak symbols in the a.out format. (There
1643 is also now support for other GNU ld extensions in ELF. Use the
1644 `--with-elf' option to configure to indicate you have ELF, and
1645 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1646 of many files which contained only symbol aliases, reducing the size of
1647 the source and the compiled library; many other files were renamed to
1648 less cryptic names previously occupied by the symbol alias files.
1649 There is a new header file <elf.h> for programs which operate on
1650 files in the ELF format.
1652 * Converted to Autoconf version 2, so `configure' has more options.
1653 Run `configure --help' to see the details.
1655 * The library can now be configured to build profiling, highly-optimized
1656 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1657 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1658 `configure' enable building these extra libraries. The shared library is
1659 built by default when using both ELF and GNU ld. When shared libraries
1660 are enabled, the new library `-ldl' is available for arbitrary run-time
1661 loading of shared objects; its interface is defined in <dlfcn.h>. The
1662 new header file <link.h> gives access to the internals of the run-time
1663 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1664 application of same name on other systems and it provides information
1665 about dynamically linked binaries.
1667 * The C library now provides the run-time support code for profiling
1668 executables compiled with `-pg'. Programs can control the profiling code
1669 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1670 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1671 the support for this file format was contributed by David Mosberger-Tang.
1673 * The math code has been replaced with a math library based on fdlibm from
1674 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1675 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1676 functions. The math functions now reside in a separate library, so
1677 programs using them will need to use `-lm' their linking commands.
1679 * John C. Bowman contributed optimized ix87 assembler inline functions.
1681 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1682 mechanism similar to that found in Solaris 2. This is now used for the
1683 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1684 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1685 file controls what services are used for each individual database. This
1686 works by loading shared libraries with names specified in `nsswitch.conf',
1687 so service modules can be changed or added at any time without even
1688 relinking any program. Currently there are the file, db, and NIS based
1689 NSS services available.
1691 * The new functions `strtoq' and `strtouq' parse integer values from
1692 strings, like `strtol' and `strtoul', but they return `long long int' and
1693 `unsigned long long int' values, respectively (64-bit quantities).
1695 * The new functions `strtof' and `strtold' parse floating-point values from
1696 strings, like `strtod', but they return `float' and `long double' values,
1697 respectively (on some machines `double' and `long double' are the same).
1699 * Ulrich Drepper has contributed new implementations of the floating-point
1700 printing and reading code used in the `printf' family of functions and
1701 `strtod', `strtof', and `strtold'. These new functions are perfectly
1702 accurate, and much faster than the old ones.
1704 * The implementation of the POSIX locale model was completely rewritten by
1705 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1706 to compile the POSIX locale definition.
1708 * The former dummy implementations of the strcoll and strxfrm function are
1709 now replaced by fully functional code contributed by Ulrich Drepper. The
1710 collation information comes from the POSIX locale definitions.
1712 * The new header <langinfo.h> defines an interface for accessing
1713 various locale-dependent data (using the locale chosen with `setlocale').
1715 * Ulrich Drepper has contributed a new suite of functions for operation on
1716 wide-character and multibyte-character strings, in <wchar.h>;
1717 and classification and case conversion of wide characters, in <wctype.h>.
1718 These new functions are conforming to the ISO C, Amendement 1 specification.
1720 * There is now a second implementation of the standard I/O library available.
1721 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1722 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1724 * You can now use positional parameter specifications in format strings
1725 for the `printf' and `scanf' families of functions. For example,
1726 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1727 ``Number 6, Mr Jones''. This is mainly useful when providing different
1728 format strings for different languages, whose grammars may dictate
1729 different orderings of the values being printed. To support this
1730 feature, the interface for `register_printf_handler' has changed; see
1731 the header file <printf.h> for details.
1733 * The `printf' and `scanf' families of functions now understand a new
1734 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1735 to group numbers as indicated by the locale; for `scanf' and friends, this
1736 says to accept as valid only a number with all the proper grouping
1737 separators in the right places. In the default "C" locale, numbers are
1738 not grouped; but locales for specific countries will define the usual
1739 conventions (i.e. separate thousands with `,' in the US locale).
1741 * The pgrp functions have been regularized, slightly incompatibly but much
1742 less confusingly. The core functions are now `getpgid' and `setpgid',
1743 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1744 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1745 provided for compatibility. There is no longer an incompatible `getpgrp'
1746 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1748 * The new header file <fts.h> and suite of functions simplify programs that
1749 operate on directory trees. This code comes from 4.4 BSD.
1751 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1752 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1753 NSS scheme used in glibc.
1755 * There is a new malloc debugging hook `__memalign_hook'.
1757 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1758 `unsigned int' in <sys/types.h>. These are for compatibility only and
1759 their use is discouraged.
1761 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1762 done differently, so that it works even without GNU ld.
1764 * New function `euidaccess' checks allowed access to a file like `access',
1765 but using the effective IDs instead of the real IDs.
1767 * The time zone data files have been updated for the latest and greatest
1768 local time conventions of the countries of the world.
1770 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1773 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1774 for formatting floating-point numbers. They are provided only for
1775 compatibility; new programs should use `sprintf' instead. There are
1776 also equivalent function for the `long double' floating-point type and
1777 all functions also exist in a reentrant form.
1779 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1780 functions for maintaining the login-record files (primarily of use to
1781 system programs such as `login'), and convenient functions for
1782 allocating and initializing a pseudo-terminal (pty) device.
1784 * Ulrich Drepper has contributed new support for System V style
1785 shared memory and IPC on systems that support it.
1787 * Ulrich Drepper has contributed several miscellaneous new functions found
1788 in System V: The `hsearch' family of functions provide an effective
1789 implementation of hash tables; `a64l' and `l64a' provide a very simple
1790 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1793 * Ulrich Drepper has contributed new reentrant counterparts for the
1794 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1796 * Ulrich Drepper has contributed new, highly-optimized versions of several
1797 string functions for the i486/Pentium family of processors.
1799 * Ulrich Drepper has updated the Linux-specific code, based largely
1800 on work done in Hongjiu Lu's version of GNU libc for Linux.
1801 The GNU library now supports Linux versions 2.0.10 and later,
1802 using the ELF object file format (i[3456]86-*-linux).
1804 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1806 * David Mosberger-Tang and Richard Henderson have ported the C library
1807 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1808 dynamic linking support for ELF/Alpha.
1810 * Richard Henderson contributed several Alpha optimized assembler function
1811 for arithmetic and string handling.
1813 * Ulrich Drepper has contributed a new set of message catalog functions to
1814 support multiple languages using the <libintl.h> interface, for use with
1815 his new package GNU gettext. Translation volunteers have contributed
1816 catalogs of the library's messages in Spanish, German, and Korean.
1818 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1819 program and the `catgets' function for reading the catalog files it
1820 creates. (The <libintl.h> interface is preferred; we include the
1821 <nl_types.h> interface using `catgets' only for source compatibility with
1822 programs already written to use it.)
1824 * New header file <values.h> gives SVID-compatible names for <limits.h>
1827 * Various new macros, declarations, and small header files for compatibility
1830 * New function `group_member' is a convenient way to check if a process has
1831 a given effective group ID.
1833 * When using GCC 2.7 and later, the socket functions are now declared in a
1834 special way so that passing an argument of type `struct sockaddr_in *',
1835 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1836 `struct sockaddr *' type, does not generate a type-clash warning.
1838 * New function `error' declared in header file <error.h> is a convenient
1839 function for printing error messages and optionally exiting; this is the
1840 canonical function used in GNU programs. The new functions `err', `warn',
1841 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1842 doing the same thing.
1844 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1845 POSIX.2 `glob' function to do ~ and {...} expansion.
1847 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1848 `clearenv' which is used in POSIX.9 is also available.
1850 * New function `getsid' returns session ID number on systems that support it.
1852 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1853 files <db.h> and <mpool.h> provide a rich set of functions for several
1854 types of simple databases stored in memory and in files, and <ndbm.h> is
1855 an old `ndbm'-compatible interface using the `db' functions. Link with
1856 `-ldb' to get these functions.
1858 * New macro `strdupa' copies a string like `strdup', but uses local stack
1859 space from `alloca' instead of dynamic heap space from `malloc'.
1861 * New function `strnlen' is like `strlen' but searches only a given maximum
1862 number of characters for the null terminator. `stpncpy', `strndup' and
1863 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1866 * New function `statfs' in header <sys/statfs.h>.
1868 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1869 provide convenient functions for operating on blocks of null-terminated
1872 * A new suite of functions in <utmp.h> handle all the details of reading
1873 and writing the utmp file.
1875 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1878 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1879 completely POSIX compliant and also implemented the extended functionality
1880 to handle alternate digit representation and alternate era date formats.
1882 * Ulrich Drepper provided an implementation of the `strptime' function
1883 defined in XPG4.2 which transforms a string into a `struct tm' value.
1885 * Paul Eggert provided the tzselect shell script as part of the timezone
1886 code. The shell script makes it easy to select the correct timezone
1889 * The implementation of the malloc family of functions is completely replaced
1890 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1891 The implementation uses the mmap function (if available) and it is
1892 optimized for the use in multi threaded programs.
1894 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1895 functions. This new functionality is usable by specifying a special
1896 salt string and it is compatible with implementation on *BSD systems.
1898 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1899 `getsubopt' to handle second level command line options, `bsd_signal'
1900 to access BSD style `signal' functionality, the obsolete `regexp' style
1903 * the `lchown' function is available on system which support this
1906 * The implementation of the shadow password handling function was contributed
1909 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1911 * POSIX.1g support was added. The <sys/select.h> header is available,
1912 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1913 implementation of `getaddrinfo'.
1917 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1919 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1920 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1922 * The new function `daemon' from 4.4 BSD is useful for server programs that
1923 want to put themselves in the background.
1925 * Joel Sherrill has contributed support for several standalone boards that
1926 run without an operating system.
1928 * `printf', `scanf' and friends now accept a `q' type modifier for long
1929 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1931 * All of the code taken from BSD (notably most of the math and networking
1932 routines) has been updated from the BSD 4.4-Lite release.
1934 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1936 * The new functions `getdomainname' and `setdomainname' fetch or change the
1937 YP/NIS domain name. These are system calls which exist on systems which
1940 * The time zone data files have been updated for the latest international
1943 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1944 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1948 * The C library now includes support for Sun RPC, from Sun's free
1949 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1950 are included. (There is still no support for YP.)
1952 * Tom Quinn has contributed a port of the C library to SGI machines running
1953 Irix 4 (mips-sgi-irix4).
1955 * The new `lockf' function is a simplified interface to the locking
1956 facilities of `fcntl', included for compatibility.
1958 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1960 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1962 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1965 * The error message printed by `assert' for a failed assertion now includes
1966 the name of the program (if using GNU ld) and the name of the calling
1967 function (with versions of GCC that support this).
1969 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1971 * The library now includes the <sys/mman.h> header file and memory
1972 management functions `mmap', `munmap', `mprotect', `msync', and
1973 `madvise', on systems that support those facilities.
1975 * The interface for `mcheck' has changed slightly: the function called to
1976 abort the program when an allocation inconsistency is detected now takes
1977 an argument that indicates the type of failure. The new function
1978 `mprobe' lets you request a consistency check for a particular block at
1979 any time (checks are normally done only when you call `free' or `realloc'
1982 * It is now possible to easily cross-compile the C library, building on one
1983 system a library to run on another machine and/or operating system. All
1984 you need to do is set the variable `HOST_CC' in `configparms' to the
1985 native compiler for programs to run on the machine you are building on (a
1986 few generator programs are used on Unix systems); set `CC' to the
1989 * The new function `fexecve' (only implemented on the GNU system) executes
1990 a program file given a file descriptor already open on the file.
1994 * Brendan Kehoe has contributed most of a port to the DEC Alpha
1995 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
1997 * You can set the variable `libprefix' in `configparms' to specify a prefix
1998 to be prepended to installed library files; this makes it easy to install
1999 the GNU C library to be linked as `-lgnuc' or whatever.
2001 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2002 copies a limited number of characters from a string, and returns the
2003 address of the last character written.
2005 * You no longer need to check for whether the installed `stddef.h' is
2006 compatible with the GNU C library. configure now checks for you.
2008 * You can now define a per-stream `fileno' function to convert the
2009 stream's cookie into an integral file descriptor.
2011 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2012 allocates zero bytes of storage, and returns a unique pointer which
2013 you can pass to `realloc' or `free'. The behavior is undefined if
2014 you dereference this pointer.
2016 * The C library now runs on Sony NEWS m68k machines running either
2017 NewsOS 3 or NewsOS 4.
2019 * The new `syscall' function is a system-dependent primitive function
2020 for invoking system calls. It has the canonical behavior on Unix
2021 systems, including unreliable return values for some calls (such as
2022 `pipe', `fork' and `getppid').
2024 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2025 to `EAGAIN', which is the preferred name. On systems whose kernels
2026 use two distinct codes, the C library now translates EWOULDBLOCK to
2027 EAGAIN in every system call function.
2031 * The GNU C Library Reference Manual is now distributed with the library.
2032 `make dvi' will produce a DVI file of the printed manual.
2033 `make info' will produce Info files that you can read on line using C-h i
2034 in Emacs or the `info' program.
2035 Please send comments on the manual to bug-glibc-manual@gnu.org.
2037 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2039 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2041 * Jason Merrill has contributed a port to the Sequent Symmetry running
2042 Dynix version 3 (i386-sequent-dynix).
2044 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2045 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2047 * New function `memory_warnings' lets you arrange to get warnings when
2048 malloc is running out of memory to allocate, like Emacs gives you.
2050 * The C library now contains the relocating allocator used in Emacs 19 for
2051 its editing buffers. This allocator (ralloc) minimizes allocation
2052 overhead and fragmentation by moving allocated regions around whenever it
2053 needs to. You always refer to a ralloc'd region with a "handle" (a
2054 pointer to a pointer--an object of type `void **').
2056 * There is a new `printf' format: `%m' gives you the string corresponding
2057 to the error code in `errno'.
2059 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2060 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2061 pass, the `a' modifier says to fill in a `char **' you pass with a
2064 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2065 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2066 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2068 * `mkstemp' is a traditional Unix function to atomically create and open a
2069 uniquely-named temporary file.
2073 * The standard location for the file that says what the local timezone is
2074 has changed again. It is now `/usr/local/etc/localtime' (or more
2075 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2077 * The distribution no longer contains any files with names longer than 14
2080 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2081 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2083 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2087 * The configuration process has changed quite a bit. The `configure'
2088 script is now used just like the configuration scripts for other GNU
2089 packages. The `sysdeps' directory hierarchy is much rearranged.
2090 The file `INSTALL' explains the new scheme in detail.
2092 * The header files no longer need to be processed into ANSI C and
2093 traditional C versions. There is just one set of files to install, and
2094 it will work with ANSI or old C compilers (including `gcc -traditional').
2096 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2097 MIPS DECStation running Ultrix 4.
2099 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2100 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2101 made itself into a shared library.
2103 * Yet further improved support for the i386, running 4.3 BSD-like systems
2104 (such as Mach 3 with the Unix single-server), or System V.
2106 * New function `strncasecmp' to do case-insensitive string comparison
2107 with limited length.
2109 * New function `strsep' is a reentrant alternative to `strtok'.
2111 * New functions `scandir' and `alphasort' for searching directories.
2113 * New function `setenv' is a better interface to `putenv'.
2115 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2116 function for traversing a directory tree.
2118 * The GNU obstack package is now also part of the C library.
2119 The new function `open_obstack_stream' creates a stdio stream that
2120 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2121 formatted output directly to an obstack.
2123 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2124 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2126 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2128 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2129 things to your strings.
2131 * There are some new test programs: test-fseek, testmb, and testrand.
2133 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2134 These ports are not finished, but are a good starting place for really
2135 supporting those systems.
2137 * `/etc/localtime' is now the standard location for the file that says what
2138 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2139 This follows the general principle that `/etc' is the place for all local
2140 configuration files.
2142 * The C library header files now use `extern "C"' when used by the C++
2143 compiler, so the C library should now work with C++ code.
2145 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2146 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2149 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2150 function which uses the `merge sort' algorithm, and is said to be
2151 significantly faster than the old GNU `qsort' function. Merge sort is
2152 now the standard `qsort' function. The new algorithm can require a lot
2153 of temporary storage; so, the old sorting function is called when the
2154 required storage is not available.
2156 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2157 provides the Unix `crypt' function, plus some other entry points.
2159 * The code and header files taken from 4.4 BSD have been updated with the
2160 latest files released from Berkeley.
2162 ----------------------------------------------------------------------
2163 Copyright information:
2165 Copyright (C) 1992-2012 Free Software Foundation, Inc.
2167 Permission is granted to anyone to make or distribute verbatim copies
2168 of this document as received, in any medium, provided that the
2169 copyright notice and this permission notice are preserved,
2170 thus giving the recipient permission to redistribute in turn.
2172 Permission is granted to distribute modified versions
2173 of this document, or of portions of it,
2174 under the above conditions, provided also that they
2175 carry prominent notices stating who last changed them.
2178 version-control: never
projects / thirdparty / glibc.git / blob