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://sourceware.org/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, 6677, 6778, 6808,
13 9685, 9914, 10014, 10038, 10631, 10873, 11438, 11607, 11638, 11741, 12140,
14 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679, 13696, 13698,
15 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950, 13952, 13966,
16 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157, 14166, 14173,
17 14195, 14197, 14237, 14251, 14252, 14283, 14298, 14303, 14307, 14328,
18 14331, 14336, 14337, 14347, 14349, 14368, 14376, 14417, 14447, 14459,
19 14476, 14477, 14501, 14505, 14510, 14516, 14518, 14519, 14530, 14532,
20 14538, 14543, 14544, 14545, 14557, 14562, 14568, 14576, 14579, 14583,
21 14587, 14595, 14602, 14610, 14621, 14638, 14645, 14648, 14652, 14660,
22 14661, 14669, 14672, 14683, 14694, 14716, 14719, 14743, 14767, 14783,
23 14784, 14785, 14793, 14796, 14797, 14801, 14803, 14805, 14807, 14811,
24 14815, 14821, 14822, 14824, 14828, 14831, 14835, 14838, 14856, 14863,
25 14865, 14866, 14868, 14869, 14871, 14879, 14889, 14893, 14914.
27 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
28 EMFILE has been fixed (Bugzilla #14889).
30 * The add-on ports collection is now distributed in the "ports" subdirectory
31 of the main GNU C Library distribution, rather than separately.
33 * Port to ARM AArch64 contributed by Linaro.
35 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
36 Optimized versions of memcpy, memset, and memcmp added for System z10 and
38 Implemented by Andreas Krebbel.
40 * The new function secure_getenv allows secure access to the environment,
41 returning NULL if running in a SUID/SGID process. This function replaces
42 the internal function __secure_getenv.
44 * SystemTap static probes have been added into the dynamic linker.
45 Implemented by Gary Benson.
47 * Optimizations of string functions strstr, strcasestr and memmem.
48 Implemented by Maxim Kuvyrkov.
50 * The minimum Linux kernel version that this version of the GNU C Library
51 can be used with is 2.6.16.
53 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
54 powerpc POWER7. Implemented by Will Schmidt.
56 * New configure option --disable-nscd builds the C library such that it
57 never attempts to contact the Name Service Caching Daemon (nscd).
58 New configure option --disable-build-nscd avoids building nscd itself;
59 this is the default if --disable-nscd is used.
61 * Improved support for cross-compilation, including cross-testing and
62 bootstrap builds without a previously built glibc.
64 * New configure options --with-bugurl and --with-pkgversion, for
65 distributors to use to embed their bug-reporting and package version
66 information in --help and --version output.
68 * The ttyname and ttyname_r functions on Linux now fall back to searching for
69 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
70 allows creation of chroots without the procfs mounted on /proc.
72 * The `crypt' function now fails if passed salt bytes that violate the
73 specification for those values. On Linux, the `crypt' function will
74 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
75 enabled, and fail on encrypted strings using the MD5 or DES algorithm
76 when the mode is enabled.
78 * The `clock_*' suite of functions (declared in <time.h>) is now available
79 directly in the main C library. Previously it was necessary to link with
80 -lrt to use these functions. This change has the effect that a
81 single-threaded program that uses a function such as `clock_gettime' (and
82 is not linked with -lrt) will no longer implicitly load the pthreads
83 library at runtime and so will not suffer the overheads associated with
84 multi-thread support in other code such as the C++ runtime library.
86 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
91 * The following bugs are resolved with this release:
93 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
94 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
95 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
96 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
97 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
98 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
99 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
100 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
101 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
102 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
103 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658,
104 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739,
105 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806,
106 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871,
107 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895,
108 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
109 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
110 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973,
111 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040,
112 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075,
113 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134,
114 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273, 14277,
117 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
118 configuring glibc with:
119 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
120 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
121 Implemented by H.J. Lu.
125 + define static_assert
127 + do not declare gets
129 + declare at_quick_exit and quick_exit also for ISO C11
131 + aligned_alloc. NB: The code is deliberately allows the size parameter
132 to not be a multiple of the alignment. This is a moronic requirement
133 in the standard but it is only a requirement on the caller, not the
138 + uchar.h support added
140 + CMPLX, CMPLXF, CMPLXL added
142 Implemented by Ulrich Drepper.
144 * Support for the IA-64 has been moved to ports.
146 * Remove support for anything but ELF binary format
148 * Checking versions of poll, ppoll added.
149 Implemented by Ulrich Drepper.
151 * More generic and 64-bit performance optimizations to math functions.
152 Implemented by Ulrich Drepper.
154 * New configure option --enable-obsolete-rpc makes the deprecated RPC
155 headers and functions available at compile time as they were before
156 version 2.14. This option will be removed at some time in the future
157 after the TI-RPC library becomes fully sufficient for the needs of
158 existing applications.
160 * Compatibility code for Linux kernel versions before 2.4 has been removed.
161 Note that glibc is not expected to work with any Linux kernel version
164 * New header <sys/auxv.h> and function getauxval allowing easy access to
165 the AT_* key-value pairs passed from the Linux kernel. The header also
166 defines the HWCAP_* bits associated with the AT_HWCAP key.
168 * New locales: mag_IN
170 * New configure option --enable-systemtap builds SystemTap static probes
171 into libc for setjmp and longjmp and into libpthread for various operations.
172 So far the setjmp/longjmp probes and some of the libpthread probes are
173 provided only for i*86 and x86_64.
174 Implemented by Roland McGrath and Rayson Ho.
176 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
178 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
181 * More optimized functions for SPARC. Implemented by David S. Miller.
183 * Improved support for cross-compilation, especially bootstrap builds
184 without a previously built glibc.
186 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
187 Chris Metcalf from Tilera.
189 * Support for the old ARM ABI has been removed from ports. Only the EABI is
190 now supported for ARM processors.
192 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
193 as the name of the dynamic linker, to distinguish it from the
194 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
196 * Support for CRIS has been removed from ports.
198 * A new class of installed header has been documented for low-level
199 platform-specific functionality. PowerPC added the first instance with a
200 function to provide time base register access. Contributed by Tulio
201 Magno Quites Machado Filho.
203 * ix86 configurations now install header files that are consistent with
204 what x86-64 configurations install. These same header files can be used
205 for -m32, -m64, or -mx32 builds.
206 Contributed by H.J. Lu.
208 * Math library bug fixes. A thorough audit of all open math library bugs was
209 conducted by Joseph Myers. Significant progress was made on many math
210 library bugs resulting in more accurate exceptions and function results.
211 Many thanks to all those that contributed including Andreas Jaeger for his
212 patch review and work on the x87 trigonometric instruction issues.
214 * Timezone data is no longer installed. Timezone-related binaries and scripts
215 will continue to be installed. Users should obtain their timezone data from
216 their distribution provider or from the tzdata package at
217 <ftp://munnari.oz.au/pub/>.
221 * The following bugs are resolved with this release:
223 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
224 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
225 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
226 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
227 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
228 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
229 13484, 13506, 13515, 13523, 13524, 13538, 13540
231 * New program pldd to list loaded object of a process
232 Implemented by Ulrich Drepper.
234 * Add nss_db support back to glibc. No more dependency on Berkeley db
235 and support for initgroups lookups.
236 Implemented by Ulrich Drepper.
238 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
239 Contributed by HJ Lu.
241 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
242 Contributed by HJ Lu.
244 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
245 on x86-32 and x86-64.
246 Contributed by Liubov Dmitrieva.
248 * Optimized strchr and strrchr for SSE on x86-32.
249 Contributed by Liubov Dmitrieva.
251 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
252 for x86-64 and x86-32.
253 Contributed by Liubov Dmitrieva.
255 * New interfaces: scandirat, scandirat64
256 Implemented by Ulrich Drepper.
258 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
259 Implemented by Ulrich Drepper.
261 * nscd now also caches the netgroup database.
262 Implemented by Ulrich Drepper.
264 * Integrate libm with gcc's -ffinite-math-only option.
265 Implemented by Ulrich Drepper.
267 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
268 to math functions. Implemented by Ulrich Drepper.
270 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
271 Implemented by Ulrich Drepper.
273 * New Linux interfaces: process_vm_readv, process_vm_writev
275 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
276 Implemented by Ulrich Drepper.
278 * Optimized nearbyint and strcasecmp for PPC.
279 Implemented by Adhemerval Zanella.
281 * New locales: bho_IN, unm_US, es_CU, ta_LK
285 * The following bugs are resolved with this release:
287 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
288 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
289 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
290 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
291 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
292 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
293 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
294 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
295 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
296 12795, 12811, 12813, 12814, 12841
298 * The RPC implementation in libc is obsoleted. Old programs keep working
299 but new programs cannot be linked with the routines in libc anymore.
300 Programs in need of RPC functionality must be linked against TI-RPC.
301 The TI-RPC implementation is IPv6 enabled and there are other benefits.
303 Visible changes of this change include (obviously) the inability to link
304 programs using RPC functions without referencing the TI-RPC library and the
305 removal of the RPC headers from the glibc headers.
306 Implemented by Ulrich Drepper.
308 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
309 syncfs, setns, sendmmsg
311 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
312 yue_HK, lij_IT, mhr_RU
314 * New encodings: CP770, CP771, CP772, CP773, CP774
316 * New program sotruss to trace calls through PLTs
317 Implemented by Ulrich Drepper.
319 * The malloc hook implementation is marked deprecated and will be removed
320 from the default implementation in the next version. The design never
321 worked ever since the introduction of threads. Even programs which do
322 not create threads themselves can use multiple threads created internally.
326 * The following bugs are resolved with this release:
328 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
329 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
330 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
331 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
334 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
336 * POWER7 optimizations: memset, memcmp, strncmp
338 * New optimized string functions for x86-64: strnlen (SSE2),
339 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
340 Implemented by Ulrich Drepper.
344 * The following bugs are resolved with this release:
346 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
347 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
348 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
349 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
350 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
351 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
352 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
353 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
355 * New interfaces: pthread_getname_np, pthread_setname_np
357 * New Linux interface: recvmmsg
359 * STT_GNU_IFUNC implemented for Sparc by David Miller.
361 * The dynamic linker now recognizes supported ABI versions from the
362 EI_ABIVERSION field in the ELF header.
363 Implemented by Ulrich Drepper.
365 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
366 will not be used to fill in password fields in the passwd.byname replies.
367 Instead it is used to synthesize the shadow.byname table, should it be
368 missing. This is a useful mode in some installations involving Solaris.
369 Implemented by Ulrich Drepper.
371 * New locales: kok_IN, sq_MK, cv_RU
375 * The following bugs are resolved with this release:
377 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
378 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
379 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
380 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
381 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
382 10789, 10817, 10823, 10840, 10847
384 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
386 Implemented by Ulrich Drepper.
388 * Checking version of longjmp added that fails if an uninitialized stack
389 frame would be created. Implemented by Ulrich Drepper.
391 * STT_GNU_IFUNC is now supported in static executables.
392 Implemented by H.J. Lu.
394 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
396 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
397 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
398 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
399 Contributed by H.J. Lu.
401 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
402 Implemented by Ulrich Drepper.
404 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
406 Contributed by H.J. Lu.
408 * Support for fma instruction in AVX on x86-64.
409 Implemented by H.J. Lu and Ulrich Drepper.
411 * AVX support in x86-64 auditing support in ld.so.
412 Implemented by H.J. Lu.
414 * STB_GNU_UNIQUE support added.
415 Implemented by Ulrich Drepper.
417 * Implement second fallback mode for optimized DNS lookup for even more
418 broken environments. If two requests from the same port are not
419 handled correctly close the socket and open a new one before sending
420 the second request. The 'single-request-reopen' option in /etc/resolv.conf
421 can be used to select this mode right away, instead of rediscovering the
422 necessity is every process again.
423 Implemented by Ulrich Drepper.
425 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
426 Implemented by Adam Tkac.
428 * Optimized iconv conversions for S390x.
429 Implemented by Andreas Krebbel.
431 * Using condvars with PI mutexes is now more efficient due to kernel
432 support for requeueing to PI futexes. NPTL support added for x86-64.
433 Implemented by Ulrich Drepper.
435 * New locales: ps_AF, my_MM
439 * The following bugs are resolved with this release:
441 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
442 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
443 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
444 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
445 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
447 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
448 Implemented by Ulrich Drepper.
450 * New Linux interfaces: accept4, fallocate, fallocate64.
451 Implemented by Ulrich Drepper.
453 * Correct declarations of string function when used in C++ code. This
454 could lead to compile errors for invalid C++ code.
456 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
459 * New POSIX 2008 interface: psiginfo
460 Implemented by Ulrich Drepper.
462 * New ISO C++1x interfaces: quick_exit, at_quick_exit
463 Implemented by Ulrich Drepper.
465 * Support for selecting between multiple function definitions at runtime
466 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
468 * The libcrypt library can now use the hash function implementations in
469 NSS. Implemented by Ulrich Drepper.
471 * The malloc implementation can be compiled to be less memory efficient
472 but higher performing in multi-threaded programs.
473 Implemented by Ulrich Drepper.
475 * New locales: nan_TW@latin, ks_IN
477 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
478 Implemented by Ulrich Drepper.
480 * Extended printf hook support. It is possible to use user-defined types
481 and extend existing format specifiers.
482 Implemented by Ulrich Drepper.
484 * Handling for group shadow files has been added.
485 Implemented by Ulrich Drepper.
487 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
488 servers (the case, e.g., for some people using the built-in DNS
489 server in ADSL modems/routers). There is a once-per-process timeout
490 in case of a broken server. To avoid it, users can run nscd or put
491 'options single-request' in /etc/resolv.conf.
492 Implemented by Ulrich Drepper.
496 * The following bugs are resolved with this release:
498 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
499 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
500 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
501 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
502 6968, 6974, 6980, 6995, 7008, 7009, 7029
504 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
505 up at the same time. Implemented by Ulrich Drepper.
507 * TLS descriptors for LD and GD on x86 and x86-64.
508 Implemented by Alexandre Oliva.
510 * getaddrinfo now handles DCCP and UDPlite.
511 Implemented by Ulrich Drepper.
513 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
514 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
515 Implemented by Ulrich Drepper.
517 * New implementation of memmem, strstr, and strcasestr which is O(n).
518 Implemented by Eric Blake.
520 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
522 * Implement "e" option for popen to open file descriptor with the
523 close-on-exec flag set. Implemented by Ulrich Drepper.
525 * Implement "b" mode for fmemopen. In this mode writes writes don't
526 implicitly add a NUL byte and seeks from the end of the buffer really
527 use the buffer end, not the string length as the basis.
528 Implemented by Ulrich Drepper.
530 * Many functions, exported and internal, now atomically set the close-on-exec
531 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
533 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
535 Implemented by Pravin Satpute.
537 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
541 * The following bugs are resolved with this release:
543 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
544 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
545 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
546 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
547 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
548 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
549 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
551 * New locales: bo_CN, bo_IN, shs_CA.
553 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
555 * Sorting rules for some Indian languages (Devanagari and Gujarati).
556 Implemented by Pravin Satpute.
558 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
560 * nscd caches now all timeouts for DNS entries
561 Implemented by Ulrich Drepper.
563 * nscd is more efficient and wakes up less often.
564 Implemented by Ulrich Drepper.
566 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
567 vdprintf, and obstack_vprintf.
568 Implemented by Jakub Jelinek.
570 * Faster memset for x86-64.
571 Implemented by Harsha Jagasia and H.J. Lu.
573 * Faster memcpy on x86.
574 Implemented by Ulrich Drepper.
576 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
577 Implemented by Ulrich Drepper.
579 * Faster sqrt and sqrtf implemention for some PPC variants.
580 Implemented by Steven Munroe.
584 * The following bugs are resolved with this release:
586 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
587 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
588 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
589 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
590 5071, 5103, 5104, 5112, 5113, 5184, 5186
592 * More checking functions: fread, fread_unlocked, open*, mq_open.
593 Implemented by Jakub Jelinek and Ulrich Drepper.
595 * Extend fortification to C++. Implemented by Jakub Jelinek.
597 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
598 by not recognizing 'a' as a modifier when those specs are requested.
599 Implemented by Jakub Jelinek.
601 * PPC optimizations to math and string functions.
602 Implemented by Steven Munroe.
604 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
605 options to be passed. Implemented by Ulrich Drepper.
607 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
609 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
610 Implemented by Ulrich Drepper.
612 * Handle private futexes in the NPTL implementation.
613 Implemented by Jakub Jelinek and Ulrich Drepper.
615 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
616 Implemented by Roland McGrath and Ulrich Drepper.
618 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
620 * SHA-256 and SHA-512 based password encryption.
621 Implemented by Ulrich Drepper.
623 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
624 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
627 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
628 Implemented by Ulrich Drepper.
632 * The following bugs are resolved with this release:
634 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
635 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
636 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
637 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
638 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
639 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
640 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
643 * New Linux interfaces: epoll_pwait, sched_getcpu.
645 * New generic interfaces: strerror_l.
647 * nscd can now cache the services database. Implemented by Ulrich Drepper.
651 * The following bugs are resolved with this release:
653 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
654 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
655 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
656 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
657 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
658 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
659 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
660 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
661 3225, 3251, 3252, 3253, 3273
663 * For Linux, the sorting of addresses returned by getaddrinfo now also
664 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
665 Implemented by Ulrich Drepper.
667 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
668 Implemented by Ulrich Drepper.
670 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
672 * New iconv module for MIK. Contributed by Alexander Shopov.
674 * For sites with broken group and/or passwd database, the auto-propagate
675 option of nscd can prevent creating ID lookup entries from the results
676 of a name lookup and vice versa. This usually is no problem but some
677 site might have problems with the default behavior.
678 Implemented by Ulrich Drepper.
680 * Iterating over entire database in NIS can be slow. With the
681 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
682 to trade time for memory. The entire database will be read at once.
683 Implemented by Ulrich Drepper.
685 * The interfaces introduced in RFC 3542 have been implemented by
688 * Support for the new ELF hash table format was added by Ulrich Drepper.
690 * Support for priority inheritance mutexes added by Jakub Jelinek and
693 * Support for priority protected mutexes added by Jakub Jelinek.
695 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
696 or_IN, csb_PL, fy_NL, sr_ME.
700 * More overflow detection functions.
702 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
703 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
705 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
706 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
707 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
708 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
709 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
710 by Masahide Washizawa.
712 * It is now possible to install audit libraries for the dynamic linker using
713 LD_AUDIT. Implemented by Ulrich Drepper.
715 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
716 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
717 For a libc and libpthread that works well on Linux 2.4 kernels, we
718 recommend using the stable 2.3 branch.
720 * The new function open_wmemstream acts like open_memstream,
721 but uses a wchar_t wide character buffer.
723 * The new function ppoll is an improved version of poll, similar to pselect.
725 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
726 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
727 renameat, unlinkat, linkat, symlinkat, readlinkat.
729 * New Linux kernel system calls: unshare,
730 inotify_init, inotify_add_watch, inotify_rm_watch.
732 * The euidaccess function is now also known by the alias eaccess,
733 for compatibility with some other systems.
735 * Timezone data updated to 2006b version.
739 * The following bugs are resolved with this release:
741 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
742 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
743 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
744 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
745 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
746 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
748 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
750 * As of this release, GCC 4 can be used to compile the C Library.
752 * Timezone data updated to 2005m version.
756 * The following bugs are resolved with this release:
758 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
759 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
760 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
761 777, 787, 821, 822, 823, 825
763 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
767 * Support for RFC 3678. Real implementations exist only for Linux so far.
768 Implemented by Ulrich Drepper.
770 * nscd can now cache entries persistently. Expiring entries are reloaded.
771 For speedups the cache can be shared in memory with client processes.
772 Implemented by Ulrich Drepper.
774 * nscd can now perform SELinux checks.
775 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
777 * getaddrinfo queries are now cached. Canonical name lookup is performed
779 Implemented by Ulrich Drepper.
781 * The nothrow function attribute is used when headers are used by gcc when
782 compiling C code. This can avoid significant amounts of exception
785 * The malloc functions perform more error checking and are stricter when
786 it comes to reacting on errors. The default action is to terminate
787 the process after showing an error message. Implemented by Ulrich Drepper.
789 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
790 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
792 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
793 namespaces using the new function dlmopen(). This feature is of course,
794 like most other dynamic loading functionality, not available in statically
795 linked applications. Implemented by Ulrich Drepper.
797 * Low-overhead boundary checking variants of string and some stdio functions
798 were added. These are to be used in conjunction with a gcc patch by
799 Jakub Jelinek which adds calls to these functions if possible.
800 Implemented by Jakub Jelinek and Ulrich Drepper.
802 * Old code for several operating systems and machine architectures that
803 have not been in working condition in a long time have been removed from
804 the main source tree maintained by the GNU C Library's maintainers.
805 These files are now reside in the separate `ports' source module
806 that is usable as an add-on when building the library.
810 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
811 interrogate the dynamic linker, compatible with the Solaris interface.
813 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
814 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
816 * getifaddrs now uses the netlink interface on Linux to get its information.
817 Implemented by Thorsten Kukuk.
819 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
820 Implemented by Ulrich Drepper.
822 * support for non-executable stacks on x86 has been added. Changes mostly
825 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
828 * getaddrinfo now performs destination address selection according to
833 * Thread-safe interfaces for many functions that access locale data
834 were added in version 2.3, but these features were omitted from NEWS.
835 Many functions have variants with an `_l' suffix that take a `locale_t'
836 object as a parameter rather than consulting the current locale.
837 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
838 create and maintain `locale_t' objects. Additionally, the new function
839 `uselocale' sets "the current locale" (as used by functions not so
840 parameterized) set for an individual thread. These features were added
841 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
843 * The functions getresuid, getresgid, setresuid, and setresgid, which
844 have long been available on Linux, are now declared in <unistd.h>
845 and are now also available on the Hurd.
847 * ELF thread-local storage support (TLS) now works on x86-64.
849 * The new dynamic string token $LIB is expanded in shared library names.
850 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
852 * Aldy Hernandez contributed complete software floating point support for
853 PowerPC machines with no FPU.
855 * fexecve is implemented on Linux.
857 * The `btowc' function should work at least twice as fast due to
858 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
860 * With approriate thread add-ons cancelable functions are now implemented
861 in libc.so as well. No need to call the function in libpthread. This
862 change allowed to finally disable the incorrect and expensive handling
863 of weak definition in ld.so.
865 * Yet more PLT entries in libc.so have been removed. We finally arrived
866 at the bare minimum. Startup times improved appropriately.
868 * Support for the new Linux/x86 system call interface was added. The
869 AT_SYSINFO auxiliary vector entry is recognized and handled.
873 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
876 * iconv (the program and the interface) now accepts empty names (excluding
877 options like //TRANSLIT) to mean "use charset of current locale".
879 * localedef can now transliterate characters in strings which are not in
880 the provided charmap. The information from the input locale is used.
882 * Prelinking support was added for ELF targets. This requires additional
883 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
885 * Read-only stdio streams now use mmap to speed up operation by eliminating
886 copying and buffer underflows. To use add 'm' to the mode string of
887 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
889 * The malloc functions were completely rewritten by Wolfram Gloger based
890 on Doug Lea's malloc-2.7.0.c.
892 * Isamu Hasegawa contributed a completely new and POSIX-conformant
893 implementation of regex.
895 * Bruno Haible upgraded the iconv and locale implementation to support
898 * Contents of the LC_* and LANG environment variables in the CEN style are
899 not recognized anymore. It never was used. Change by Ulrich Drepper.
901 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
902 thread-local storage (TLS) ABI on some platforms.
903 Changes by Ulrich Drepper. SH support by Kaz Kojima.
905 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
906 EUC-JISX0213, and TSCII.
908 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
909 BSD-compatible interface for getting all network interface addresses.
910 Implementation for IPv4 by Roland McGrath.
912 * Loading of locale data is faster due to the introduction of a locale
913 archive. Implemented by Roland McGrath and Ulrich Drepper.
915 * Startup times are significantly reduced by not using exported functions
916 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
919 * Steven Munroe contributed a port to PowerPC64/Linux.
923 * The Hurd now uses the GNU libio implementation of stdio rather than the
924 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
926 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
927 with the same behavior as the Linux system call of the same name.
931 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
932 128-bit long double format.
934 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
935 IBM1161, and IBM1162 charsets.
937 * Andreas Jaeger contributed a port to x86-64/Linux.
939 * Peter Bruin contributed a port to PowerPC/Hurd.
941 * libc functions using I/O streams now can handle wide-oriented streams
944 * optimizations in the dynamic linker. Binaries created by recent binutils
945 versions start up quicker due to reduced time spent on relocations.
947 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
951 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
952 asinh, atanh, j0 for the 128-bit long double format.
954 * Bruno Haible updated all the code handling Unicode in some form to
957 * Speed of regex for single-byte locales is back to previous levels.
958 Patch by Isamu Hasegawa.
960 * Alpha, SPARC, and IA-64 now also using floating stacks.
962 * Startup time of internationalized applications greatly improved through
963 iconv cache. Use iconvconfig to generate the cache file.
964 Contributed by Ulrich Drepper.
966 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
967 severe performance problems. Patch by David Mosberger.
969 * The Hurd port got a lot more functionality like AIO, various stdio
970 extensions, etc. Mainly done by Roland McGrath.
972 * mtrace can now lookup symbols in shared libraries.
976 * Intel's IA-64 math library is largely integrated. It provides fast and
977 accurate implementatations for most basic and standard math functions
978 in float, double, and long double format.
980 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
981 and asin for the 96-bit long double format and asin, log, tan for the
982 128-bit long double format.
984 * The beginning of a last-bit accurate math library by IBM Haifa were added.
985 The basic double functions exist today. Contributed by Abraham Ziv
986 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
987 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
989 * An asynchronous name lookup library was added. The interface is designed
990 after POSIX AIO. The proposal was circulated beforehand to get comments.
991 No negative ones came in. Implemented by Ulrich Drepper.
993 * Port to S390/64bit contributed by Martin Schwidefsky
994 <schwidefsky@de.ibm.com>.
996 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
997 of functions for Linux/IA-64.
999 * The RPC code is now thread safe. Threads can now use the same service
1000 of different services at the same time. Patch by Eric Norum
1001 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1003 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1004 family of functions for Linux/S390.
1006 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1007 of functions for Linux/x86.
1009 * Port to Linux/CRIS contributed by Axis Communications.
1013 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1014 we can now check for namespace violations and missing declarations. The
1015 result is that almost all headers are now Unix-compliant (as defined in
1016 the upcoming XPG6). The negative side is that some programs might need
1017 corrections, too, if they depend on the incorrect form of the headers in
1018 previous versions which defined too many symbols and included too many
1021 * regex now handles multibyte character sets correctly.
1022 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1024 * iconv (the program) does now conform to the upcoming XPG6 and handles
1025 charmaps. Instead of the charset names the path of charmaps can be
1026 provided and the conversion happens based on this data.
1027 Contributed by Ulrich Drepper.
1029 * The locale program now provides detailed information about the installed
1034 only lists the names of the supported locales
1038 provides details such as country, language, and codeset name.
1039 Contributed by Ulrich Drepper.
1043 * The gencat program now parses the input file according to the charset
1044 selected by the LC_CTYPE category. This is important for stateful
1045 character sets. To make generating catalogs easier there is a way
1046 to overwrite the charset selected by the locale: before the first
1047 message or $ quote line the catalog can contain a line like
1049 $ codeset=ISO-8859-2
1051 to select the charset (ISO-8859-2 in this case).
1053 Implemented by Shinya Hanataka and Ulrich Drepper.
1055 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1056 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1057 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1059 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1060 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1062 * The LANGUAGE environment variable is now ignored unless the locale is
1063 changed from the default "C" locale.
1065 * The usual bug fixes.
1069 * Greg McGary added runtime support for bounds checking using gcc's
1070 new -fbounded-pointers option. ix86 target is complete. PowerPC
1073 * Thorsten Kukuk added secure mode support to nscd.
1075 * The Berkeley db libraries have been removed.
1077 Related, the nss_db module is now in a separate package since it
1078 obviously requires a database library being available.
1080 * Wide character I/O streams implemented by Ulrich Drepper.
1082 * Functions from the extended socket API added by Ulrich Drepper.
1084 * Functions feenableexcept and fedisableexcept to control the
1085 behaviour of individual exceptions have been added by Andreas Jaeger.
1087 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1089 * The resolver code has been updated from bind 8.2.3-T5B which supports
1090 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1093 This change could in some situations effect backward compatibility. Since
1094 now `_res' is a thread-local instead of a global variable, modifying it
1095 in one thread does not have any effect in other threads.
1097 The resolver library was also extended to allow IPv6 as the transport
1098 protocol for the requests. This work was done by Stig Venaas.
1100 * Compatibility code for K&R C compilers has been removed from the
1101 header files. A ISO C compiler is needed to use the library
1102 (conforming to either C89 or C99 standard).
1104 * Complete rewrite of the localedef program to support multibyte character
1105 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1106 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1107 Implemented by Ulrich Drepper.
1109 Bruno Haible significantly improved the generation and use of the data
1110 structures for the wide character tables.
1112 * Plural handling in gettext implemented by Ulrich Drepper.
1114 * The utmp daemon has been removed.
1116 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1118 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1121 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1123 * POSIX barriers implemented by Kaz Kylheku.
1125 * POSIX spawn function family implemented by Ulrich Drepper.
1127 * POSIX spinlocks are now available.
1129 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1131 * the configure option --enable-kernel=X.Y.Z allows to strip out
1132 compatibility for kernel versions before X.Y.Z. This is currently only
1133 implemented for Linux.
1135 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1136 field sin6_scope_id. This means that all programs using IPv6 should be
1137 recompiled. Don't expect binary compatibility with previous glibc
1140 * various conversion modules for IBM character sets contributed by
1143 * IA-64 port by Jes Sorensen and HJ Lu.
1157 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1159 * New xdr functions are added; some rpc functions are now 64bit clean.
1161 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1163 * Fixed known incompatibilities with glibc 2.0.
1165 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1167 * Optimized a number of functions (especially the ELF dynamic loader).
1169 * Update timezone data files.
1171 * lots of charmaps corrections
1173 * some new locale definitions and charmaps
1178 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1179 conform to POSIX member type requirements. Symbol versions have been
1180 adjusted as needed within the library, and for direct use by applications,
1181 but there is potential for problems if third-party libraries use
1182 struct timeval as part of their interface. This does not present
1183 a problem for X and other "essential" system libraries.
1185 * An additional locale model to support C++ Standard Library locale
1186 model and probably more was implemented by Ulrich Drepper.
1188 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1191 * Miles Bader provided the `argp' function family to support hierachical
1192 command line argument parsing, layered on top of getopt.
1194 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1196 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1199 * scanf recognizes the %a and %A format for scanning floating point numbers.
1201 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1202 information and interfaces for the available integer types.
1204 * about 130 new math functions were added to implement the ISO C9x math
1207 * the new header <complex.h> contains definitions of the complex math
1208 functions from ISO C 9X.
1210 * the new header <tgmath.h> defines generic macros to use complex or
1211 real valued functions.
1213 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1215 * Andreas Jaeger provided a test suite for the math library.
1217 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1219 * Ulrich Drepper added character set conversion functions (iconv).
1221 * Optimized string functions have been added.
1223 * The localedata addon is now part of glibc.
1225 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1227 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1228 daemon for NSS (nscd).
1230 Missing a better place here are some numbers on improvements. Under
1231 Linux 2.1.125 un-tar-ing the kernel sources takes
1235 using local files 12.19s 6.88s 22.91s
1237 using NIS 13.92s 8.91s 26.34s
1239 using NIS & nscd 10.37s 7.34s 25.30s
1241 using NIS+ 27.57s 30.37s 640.46s
1243 using NIS+ & nscd 10.25s 7.83s 26.51s
1245 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1247 Keep in mind that non-namelookup related operations dominate above times.
1248 It was just a common complain that using NIS+ unpacking the kernel is
1251 [1] The old nscd implementation is not available anymore since it was
1252 distributed with glibc up to version 2.0.98 and thus is now replaced.
1254 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1256 * Mark Kettenis provided a Hesiod NSS module.
1258 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1259 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1261 * rcmd can now handle netgroups (Dick Streefland).
1263 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1266 * Support for the IPv6 protocol has been added to the socket API, as per the
1267 latest draft standards.
1269 * Support for Linux 2.2 has been added.
1271 * Interface changes relative to the latest 2.0.x release:
1272 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1273 addseverity NEW: Unix98
1274 alphasort64 NEW: LFS
1275 argp_err_exit_status NEW: argp, GNU ext
1276 argp_error NEW: argp, GNU ext
1277 argp_failure NEW: argp, GNU ext
1278 argp_help NEW: argp, GNU ext
1279 argp_parse NEW: argp, GNU ext
1280 argp_program_bug_address NEW: argp, GNU ext
1281 argp_program_version NEW: argp, GNU ext
1282 argp_program_version_hook NEW: argp, GNU ext
1283 argp_state_help NEW: argp, GNU ext
1284 argp_usage NEW: argp, GNU ext
1285 authdes_create NEW: Secure RPC
1286 authdes_getucred NEW: Secure RPC
1287 authdes_pk_create NEW: Secure RPC
1288 backtrace NEW: GNU ext.
1289 backtrace_symbols NEW: GNU ext.
1290 backtrace_symbols_fd NEW: GNU ext.
1292 cacosf NEW: ISO C 9x
1293 cacosh NEW: ISO C 9x
1294 cacoshf NEW: ISO C 9x
1295 cacoshl NEW: ISO C 9x
1296 cacosl NEW: ISO C 9x
1303 casinf NEW: ISO C 9x
1304 casinh NEW: ISO C 9x
1305 casinhf NEW: ISO C 9x
1306 casinhl NEW: ISO C 9x
1307 casinl NEW: ISO C 9x
1309 catanf NEW: ISO C 9x
1310 catanh NEW: ISO C 9x
1311 catanhf NEW: ISO C 9x
1312 catanhl NEW: ISO C 9x
1313 catanl NEW: ISO C 9x
1314 cbc_crypt NEW: Secure RPC
1318 ccoshf NEW: ISO C 9x
1319 ccoshl NEW: ISO C 9x
1325 cimagf NEW: ISO C 9x
1326 cimagl NEW: ISO C 9x
1327 clearerr_locked REMOVED
1328 clntunix_create NEW: sunrpc ext
1330 clog10 NEW: ISO C 9x
1331 clog10f NEW: ISO C 9x
1332 clog10l NEW: ISO C 9x
1342 cprojf NEW: ISO C 9x
1343 cprojl NEW: ISO C 9x
1345 crealf NEW: ISO C 9x
1346 creall NEW: ISO C 9x
1351 csinhf NEW: ISO C 9x
1352 csinhl NEW: ISO C 9x
1355 csqrtf NEW: ISO C 9x
1356 csqrtl NEW: ISO C 9x
1360 ctanhf NEW: ISO C 9x
1361 ctanhl NEW: ISO C 9x
1363 des_setparity NEW: Secure RPC
1364 ecb_crypt NEW: Secure RPC
1365 endutxent NEW: Unix98
1367 exp10f NEW: ISO C 9x
1368 exp10l NEW: ISO C 9x
1372 fattach NEW: STREAMS
1373 fdetach NEW: STREAMS
1377 feclearexcept NEW: ISO C 9x
1378 fegetenv NEW: ISO C 9x
1379 fegetexceptflag NEW: ISO C 9x
1380 fegetround NEW: ISO C 9x
1381 feholdexcept NEW: ISO C 9x
1383 feraiseexcept NEW: ISO C 9x
1384 ferror_locked REMOVED
1385 fesetenv NEW: ISO C 9x
1386 fesetexceptflag NEW: ISO C 9x
1387 fesetround NEW: ISO C 9x
1388 fetestexcept NEW: ISO C 9x
1389 feupdateenv NEW: ISO C 9x
1390 fflush_locked REMOVED
1394 fgets_unlocked NEW: GNU ext.
1395 fileno_locked REMOVED
1407 fputc_locked REMOVED
1408 fputs_unlocked NEW: GNU ext.
1409 fread_unlocked NEW: GNU ext.
1414 fstatvfs NEW: Unix98
1418 ftruncate64 NEW: LFS
1420 fwrite_unlocked NEW: GNU ext.
1421 gai_strerror NEW: IPv6
1425 getchar_locked REMOVED
1427 getdate_err NEW: Unix98
1428 getdate_r NEW: GNU ext.
1430 getnameinfo NEW: IPv6
1431 getnetname NEW: Secure RPC
1432 getpmsg NEW: STREAMS
1433 getpt NEW: Unix98 PTY
1434 getrlimit64 NEW: LFS
1435 getutxent NEW: Unix98
1436 getutxid NEW: Unix98
1437 getutxline NEW: Unix98
1438 glob64 NEW: GNU ext.
1439 globfree64 NEW: GNU ext.
1440 gnu_get_libc_release NEW: GNU ext.
1441 gnu_get_libc_version NEW: GNU ext.
1442 grantpt NEW: Unix98 PTY
1443 host2netname NEW: Secure RPC
1445 iconv_close NEW: iconv
1446 iconv_open NEW: iconv
1447 if_freenameindex NEW: IPv6
1448 if_indextoname NEW: IPv6
1449 if_nameindex NEW: IPv6
1450 if_nametoindex NEW: IPv6
1451 in6addr_any NEW: IPv6
1452 in6addr_loopback NEW: IPv6
1453 inet6_isipv4mapped NEW: IPv6
1454 isastream NEW: STREAMS
1455 iswblank NEW: GNU ext.
1456 key_decryptsession NEW: Secure RPC
1457 key_decryptsession_pk NEW: Secure RPC
1458 key_encryptsession NEW: Secure RPC
1459 key_encryptsession_pk NEW: Secure RPC
1460 key_gendes NEW: Secure RPC
1461 key_get_conv NEW: Secure RPC
1462 key_secretkey_is_set NEW: Secure RPC
1463 key_setnet NEW: Secure RPC
1464 key_setsecret NEW: Secure RPC
1465 llrint NEW: ISO C 9x
1466 llrintf NEW: ISO C 9x
1467 llrintl NEW: ISO C 9x
1468 llround NEW: ISO C 9x
1469 llroundf NEW: ISO C 9x
1470 llroundl NEW: ISO C 9x
1475 lrintf NEW: ISO C 9x
1476 lrintl NEW: ISO C 9x
1477 lround NEW: ISO C 9x
1478 lroundf NEW: ISO C 9x
1479 lroundl NEW: ISO C 9x
1481 makecontext NEW: Unix98
1482 mempcpy NEW: GNU ext.
1485 modify_ldt NEW: kernel
1489 nearbyint NEW: ISO C 9x
1490 nearbyintf NEW: ISO C 9x
1491 nearbyintl NEW: ISO C 9x
1492 netname2host NEW: Secure RPC
1493 netname2user NEW: Secure RPC
1494 nexttoward NEW: ISO C 9x
1495 nexttowardf NEW: ISO C 9x
1496 nexttowardl NEW: ISO C 9x
1500 passwd2des NEW: Secure RPC
1502 pow10f NEW: GNU ext.
1503 pow10l NEW: GNU ext.
1506 printf_size NEW: GNU ext.
1507 printf_size_info NEW: GNU ext.
1508 profil_counter REMOVED
1509 pthread_mutexattr_getkind_np REPLACED
1510 pthread_mutexattr_setkind_np REPLACED
1511 ptsname NEW: Unix98 PTY
1512 ptsname_r NEW: Unix98 PTY
1514 putchar_locked REMOVED
1515 putgrent NEW: GNU ext.
1517 putpmsg NEW: STREAMS
1518 pututxline NEW: Unix98
1522 readdir64_r NEW: LFS
1523 remquo NEW: ISO C 9x
1524 remquof NEW: ISO C 9x
1525 remquol NEW: ISO C 9x
1527 roundf NEW: ISO C 9x
1528 roundl NEW: ISO C 9x
1530 scalbln NEW: ISO C 9x
1531 scalblnf NEW: ISO C 9x
1532 scalblnl NEW: ISO C 9x
1534 sendfile NEW: kernel
1535 setcontext NEW: Unix98
1536 setrlimit64 NEW: LFS
1537 setutxent NEW: Unix98
1539 sigignore NEW: Unix98
1540 sigqueue NEW: POSIX.1b
1541 sigrelse NEW: Unix98
1542 sigset NEW: POSIX.1b
1543 sigtimedwait NEW: POSIX.1b
1544 sigwaitinfo NEW: POSIX.1b
1545 sincos NEW: GNU ext.
1546 sincosf NEW: GNU ext.
1547 sincosl NEW: GNU ext.
1551 strcasestr NEW: GNU ext.
1552 strtoimax NEW: ISO C 9x
1553 strtoumax NEW: ISO C 9x
1554 strverscmp NEW: GNU ext.
1555 svcauthdes_stats NEW: Secure RPC
1556 svcunix_create NEW: sunrpc etx
1557 svcunixfd_create NEW: sunrpc ext
1558 swapcontext NEW: Unix98
1559 tcgetsid NEW: Unix98 PTY
1560 tdestroy NEW: GNU ext.
1561 tgamma NEW: ISO C 9x
1562 tgammaf NEW: ISO C 9x
1563 tgammal NEW: ISO C 9x
1567 truncf NEW: ISO C 9x
1568 truncl NEW: ISO C 9x
1570 unlockpt NEW: Unix98 PTY
1571 updwtmpx NEW: Unix98
1572 user2netname NEW: Secure RPC
1573 utmpxname NEW: Unix98
1574 versionsort NEW: GNU ext.
1575 versionsort64 NEW: GNU ext.
1577 wcscasecmp NEW: GNU ext.
1578 wcsncasecmp NEW: GNU ext.
1579 wcsnlen NEW: GNU ext.
1580 wcstoimax NEW: ISO C 9x
1581 wcstoll NEW: ISO C 9x
1582 wcstoull NEW: ISO C 9x
1583 wcstoumax NEW: ISO C 9x
1585 wordexp NEW: POSIX.2
1586 wordfree NEW: POSIX.2
1587 write_profiling REMOVED
1588 xdecrypt NEW: Secure RPC
1589 xdr_authdes_cred NEW: Secure RPC
1590 xdr_authdes_verf NEW: Secure RPC
1591 xdr_cryptkeyarg NEW: Secure RPC
1592 xdr_cryptkeyarg2 NEW: Secure RPC
1593 xdr_cryptkeyres NEW: Secure RPC
1594 xdr_getcredres NEW: Secure RPC
1595 xdr_key_netstarg NEW: Secure RPC
1596 xdr_key_netstres NEW: Secure RPC
1597 xdr_keybuf NEW: Secure RPC
1598 xdr_keystatus NEW: Secure RPC
1599 xdr_netnamestr NEW: Secure RPC
1600 xdr_sizeof NEW: Secure RPC
1601 xdr_unixcred NEW: sunrpc ext
1602 xencrypt NEW: Secure RPC
1603 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1614 * inet_ntoa is thread-safe
1616 * updwtmp is moved from libutil to libc
1618 * rewrite of cbrt function
1620 * update of timezone data
1634 * add atoll function
1636 * fix complex problems in Berkeley DB code
1638 * fix math functions
1642 * fixed lots of header problems (especially Linux/GNU specific)
1644 * dynamic loader preserves all registers
1646 * Roland McGrath provided support for handling of auxiliary objects in
1647 the ELF dynamic loader.
1649 * support for parallel builds is improved
1653 * GNU extensions are no longer declared by default. To enable them you
1654 must define the macro `_GNU_SOURCE' in your program or compile with
1657 * The library has changed from using GNU ld symbol aliases to using weak
1658 symbols where available. The ELF object file format supports weak
1659 symbols; GNU ld also supports weak symbols in the a.out format. (There
1660 is also now support for other GNU ld extensions in ELF. Use the
1661 `--with-elf' option to configure to indicate you have ELF, and
1662 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1663 of many files which contained only symbol aliases, reducing the size of
1664 the source and the compiled library; many other files were renamed to
1665 less cryptic names previously occupied by the symbol alias files.
1666 There is a new header file <elf.h> for programs which operate on
1667 files in the ELF format.
1669 * Converted to Autoconf version 2, so `configure' has more options.
1670 Run `configure --help' to see the details.
1672 * The library can now be configured to build profiling, highly-optimized
1673 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1674 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1675 `configure' enable building these extra libraries. The shared library is
1676 built by default when using both ELF and GNU ld. When shared libraries
1677 are enabled, the new library `-ldl' is available for arbitrary run-time
1678 loading of shared objects; its interface is defined in <dlfcn.h>. The
1679 new header file <link.h> gives access to the internals of the run-time
1680 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1681 application of same name on other systems and it provides information
1682 about dynamically linked binaries.
1684 * The C library now provides the run-time support code for profiling
1685 executables compiled with `-pg'. Programs can control the profiling code
1686 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1687 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1688 the support for this file format was contributed by David Mosberger-Tang.
1690 * The math code has been replaced with a math library based on fdlibm from
1691 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1692 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1693 functions. The math functions now reside in a separate library, so
1694 programs using them will need to use `-lm' their linking commands.
1696 * John C. Bowman contributed optimized ix87 assembler inline functions.
1698 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1699 mechanism similar to that found in Solaris 2. This is now used for the
1700 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1701 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1702 file controls what services are used for each individual database. This
1703 works by loading shared libraries with names specified in `nsswitch.conf',
1704 so service modules can be changed or added at any time without even
1705 relinking any program. Currently there are the file, db, and NIS based
1706 NSS services available.
1708 * The new functions `strtoq' and `strtouq' parse integer values from
1709 strings, like `strtol' and `strtoul', but they return `long long int' and
1710 `unsigned long long int' values, respectively (64-bit quantities).
1712 * The new functions `strtof' and `strtold' parse floating-point values from
1713 strings, like `strtod', but they return `float' and `long double' values,
1714 respectively (on some machines `double' and `long double' are the same).
1716 * Ulrich Drepper has contributed new implementations of the floating-point
1717 printing and reading code used in the `printf' family of functions and
1718 `strtod', `strtof', and `strtold'. These new functions are perfectly
1719 accurate, and much faster than the old ones.
1721 * The implementation of the POSIX locale model was completely rewritten by
1722 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1723 to compile the POSIX locale definition.
1725 * The former dummy implementations of the strcoll and strxfrm function are
1726 now replaced by fully functional code contributed by Ulrich Drepper. The
1727 collation information comes from the POSIX locale definitions.
1729 * The new header <langinfo.h> defines an interface for accessing
1730 various locale-dependent data (using the locale chosen with `setlocale').
1732 * Ulrich Drepper has contributed a new suite of functions for operation on
1733 wide-character and multibyte-character strings, in <wchar.h>;
1734 and classification and case conversion of wide characters, in <wctype.h>.
1735 These new functions are conforming to the ISO C, Amendement 1 specification.
1737 * There is now a second implementation of the standard I/O library available.
1738 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1739 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1741 * You can now use positional parameter specifications in format strings
1742 for the `printf' and `scanf' families of functions. For example,
1743 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1744 ``Number 6, Mr Jones''. This is mainly useful when providing different
1745 format strings for different languages, whose grammars may dictate
1746 different orderings of the values being printed. To support this
1747 feature, the interface for `register_printf_handler' has changed; see
1748 the header file <printf.h> for details.
1750 * The `printf' and `scanf' families of functions now understand a new
1751 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1752 to group numbers as indicated by the locale; for `scanf' and friends, this
1753 says to accept as valid only a number with all the proper grouping
1754 separators in the right places. In the default "C" locale, numbers are
1755 not grouped; but locales for specific countries will define the usual
1756 conventions (i.e. separate thousands with `,' in the US locale).
1758 * The pgrp functions have been regularized, slightly incompatibly but much
1759 less confusingly. The core functions are now `getpgid' and `setpgid',
1760 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1761 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1762 provided for compatibility. There is no longer an incompatible `getpgrp'
1763 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1765 * The new header file <fts.h> and suite of functions simplify programs that
1766 operate on directory trees. This code comes from 4.4 BSD.
1768 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1769 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1770 NSS scheme used in glibc.
1772 * There is a new malloc debugging hook `__memalign_hook'.
1774 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1775 `unsigned int' in <sys/types.h>. These are for compatibility only and
1776 their use is discouraged.
1778 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1779 done differently, so that it works even without GNU ld.
1781 * New function `euidaccess' checks allowed access to a file like `access',
1782 but using the effective IDs instead of the real IDs.
1784 * The time zone data files have been updated for the latest and greatest
1785 local time conventions of the countries of the world.
1787 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1790 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1791 for formatting floating-point numbers. They are provided only for
1792 compatibility; new programs should use `sprintf' instead. There are
1793 also equivalent function for the `long double' floating-point type and
1794 all functions also exist in a reentrant form.
1796 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1797 functions for maintaining the login-record files (primarily of use to
1798 system programs such as `login'), and convenient functions for
1799 allocating and initializing a pseudo-terminal (pty) device.
1801 * Ulrich Drepper has contributed new support for System V style
1802 shared memory and IPC on systems that support it.
1804 * Ulrich Drepper has contributed several miscellaneous new functions found
1805 in System V: The `hsearch' family of functions provide an effective
1806 implementation of hash tables; `a64l' and `l64a' provide a very simple
1807 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1810 * Ulrich Drepper has contributed new reentrant counterparts for the
1811 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1813 * Ulrich Drepper has contributed new, highly-optimized versions of several
1814 string functions for the i486/Pentium family of processors.
1816 * Ulrich Drepper has updated the Linux-specific code, based largely
1817 on work done in Hongjiu Lu's version of GNU libc for Linux.
1818 The GNU library now supports Linux versions 2.0.10 and later,
1819 using the ELF object file format (i[3456]86-*-linux).
1821 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1823 * David Mosberger-Tang and Richard Henderson have ported the C library
1824 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1825 dynamic linking support for ELF/Alpha.
1827 * Richard Henderson contributed several Alpha optimized assembler function
1828 for arithmetic and string handling.
1830 * Ulrich Drepper has contributed a new set of message catalog functions to
1831 support multiple languages using the <libintl.h> interface, for use with
1832 his new package GNU gettext. Translation volunteers have contributed
1833 catalogs of the library's messages in Spanish, German, and Korean.
1835 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1836 program and the `catgets' function for reading the catalog files it
1837 creates. (The <libintl.h> interface is preferred; we include the
1838 <nl_types.h> interface using `catgets' only for source compatibility with
1839 programs already written to use it.)
1841 * New header file <values.h> gives SVID-compatible names for <limits.h>
1844 * Various new macros, declarations, and small header files for compatibility
1847 * New function `group_member' is a convenient way to check if a process has
1848 a given effective group ID.
1850 * When using GCC 2.7 and later, the socket functions are now declared in a
1851 special way so that passing an argument of type `struct sockaddr_in *',
1852 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1853 `struct sockaddr *' type, does not generate a type-clash warning.
1855 * New function `error' declared in header file <error.h> is a convenient
1856 function for printing error messages and optionally exiting; this is the
1857 canonical function used in GNU programs. The new functions `err', `warn',
1858 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1859 doing the same thing.
1861 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1862 POSIX.2 `glob' function to do ~ and {...} expansion.
1864 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1865 `clearenv' which is used in POSIX.9 is also available.
1867 * New function `getsid' returns session ID number on systems that support it.
1869 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1870 files <db.h> and <mpool.h> provide a rich set of functions for several
1871 types of simple databases stored in memory and in files, and <ndbm.h> is
1872 an old `ndbm'-compatible interface using the `db' functions. Link with
1873 `-ldb' to get these functions.
1875 * New macro `strdupa' copies a string like `strdup', but uses local stack
1876 space from `alloca' instead of dynamic heap space from `malloc'.
1878 * New function `strnlen' is like `strlen' but searches only a given maximum
1879 number of characters for the null terminator. `stpncpy', `strndup' and
1880 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1883 * New function `statfs' in header <sys/statfs.h>.
1885 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1886 provide convenient functions for operating on blocks of null-terminated
1889 * A new suite of functions in <utmp.h> handle all the details of reading
1890 and writing the utmp file.
1892 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1895 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1896 completely POSIX compliant and also implemented the extended functionality
1897 to handle alternate digit representation and alternate era date formats.
1899 * Ulrich Drepper provided an implementation of the `strptime' function
1900 defined in XPG4.2 which transforms a string into a `struct tm' value.
1902 * Paul Eggert provided the tzselect shell script as part of the timezone
1903 code. The shell script makes it easy to select the correct timezone
1906 * The implementation of the malloc family of functions is completely replaced
1907 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1908 The implementation uses the mmap function (if available) and it is
1909 optimized for the use in multi threaded programs.
1911 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1912 functions. This new functionality is usable by specifying a special
1913 salt string and it is compatible with implementation on *BSD systems.
1915 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1916 `getsubopt' to handle second level command line options, `bsd_signal'
1917 to access BSD style `signal' functionality, the obsolete `regexp' style
1920 * the `lchown' function is available on system which support this
1923 * The implementation of the shadow password handling function was contributed
1926 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1928 * POSIX.1g support was added. The <sys/select.h> header is available,
1929 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1930 implementation of `getaddrinfo'.
1934 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1936 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1937 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1939 * The new function `daemon' from 4.4 BSD is useful for server programs that
1940 want to put themselves in the background.
1942 * Joel Sherrill has contributed support for several standalone boards that
1943 run without an operating system.
1945 * `printf', `scanf' and friends now accept a `q' type modifier for long
1946 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1948 * All of the code taken from BSD (notably most of the math and networking
1949 routines) has been updated from the BSD 4.4-Lite release.
1951 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1953 * The new functions `getdomainname' and `setdomainname' fetch or change the
1954 YP/NIS domain name. These are system calls which exist on systems which
1957 * The time zone data files have been updated for the latest international
1960 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1961 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1965 * The C library now includes support for Sun RPC, from Sun's free
1966 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1967 are included. (There is still no support for YP.)
1969 * Tom Quinn has contributed a port of the C library to SGI machines running
1970 Irix 4 (mips-sgi-irix4).
1972 * The new `lockf' function is a simplified interface to the locking
1973 facilities of `fcntl', included for compatibility.
1975 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
1977 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
1979 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
1982 * The error message printed by `assert' for a failed assertion now includes
1983 the name of the program (if using GNU ld) and the name of the calling
1984 function (with versions of GCC that support this).
1986 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
1988 * The library now includes the <sys/mman.h> header file and memory
1989 management functions `mmap', `munmap', `mprotect', `msync', and
1990 `madvise', on systems that support those facilities.
1992 * The interface for `mcheck' has changed slightly: the function called to
1993 abort the program when an allocation inconsistency is detected now takes
1994 an argument that indicates the type of failure. The new function
1995 `mprobe' lets you request a consistency check for a particular block at
1996 any time (checks are normally done only when you call `free' or `realloc'
1999 * It is now possible to easily cross-compile the C library, building on one
2000 system a library to run on another machine and/or operating system. All
2001 you need to do is set the variable `HOST_CC' in `configparms' to the
2002 native compiler for programs to run on the machine you are building on (a
2003 few generator programs are used on Unix systems); set `CC' to the
2006 * The new function `fexecve' (only implemented on the GNU system) executes
2007 a program file given a file descriptor already open on the file.
2011 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2012 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2014 * You can set the variable `libprefix' in `configparms' to specify a prefix
2015 to be prepended to installed library files; this makes it easy to install
2016 the GNU C library to be linked as `-lgnuc' or whatever.
2018 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2019 copies a limited number of characters from a string, and returns the
2020 address of the last character written.
2022 * You no longer need to check for whether the installed `stddef.h' is
2023 compatible with the GNU C library. configure now checks for you.
2025 * You can now define a per-stream `fileno' function to convert the
2026 stream's cookie into an integral file descriptor.
2028 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2029 allocates zero bytes of storage, and returns a unique pointer which
2030 you can pass to `realloc' or `free'. The behavior is undefined if
2031 you dereference this pointer.
2033 * The C library now runs on Sony NEWS m68k machines running either
2034 NewsOS 3 or NewsOS 4.
2036 * The new `syscall' function is a system-dependent primitive function
2037 for invoking system calls. It has the canonical behavior on Unix
2038 systems, including unreliable return values for some calls (such as
2039 `pipe', `fork' and `getppid').
2041 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2042 to `EAGAIN', which is the preferred name. On systems whose kernels
2043 use two distinct codes, the C library now translates EWOULDBLOCK to
2044 EAGAIN in every system call function.
2048 * The GNU C Library Reference Manual is now distributed with the library.
2049 `make dvi' will produce a DVI file of the printed manual.
2050 `make info' will produce Info files that you can read on line using C-h i
2051 in Emacs or the `info' program.
2052 Please send comments on the manual to bug-glibc-manual@gnu.org.
2054 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2056 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2058 * Jason Merrill has contributed a port to the Sequent Symmetry running
2059 Dynix version 3 (i386-sequent-dynix).
2061 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2062 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2064 * New function `memory_warnings' lets you arrange to get warnings when
2065 malloc is running out of memory to allocate, like Emacs gives you.
2067 * The C library now contains the relocating allocator used in Emacs 19 for
2068 its editing buffers. This allocator (ralloc) minimizes allocation
2069 overhead and fragmentation by moving allocated regions around whenever it
2070 needs to. You always refer to a ralloc'd region with a "handle" (a
2071 pointer to a pointer--an object of type `void **').
2073 * There is a new `printf' format: `%m' gives you the string corresponding
2074 to the error code in `errno'.
2076 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2077 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2078 pass, the `a' modifier says to fill in a `char **' you pass with a
2081 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2082 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2083 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2085 * `mkstemp' is a traditional Unix function to atomically create and open a
2086 uniquely-named temporary file.
2090 * The standard location for the file that says what the local timezone is
2091 has changed again. It is now `/usr/local/etc/localtime' (or more
2092 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2094 * The distribution no longer contains any files with names longer than 14
2097 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2098 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2100 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2104 * The configuration process has changed quite a bit. The `configure'
2105 script is now used just like the configuration scripts for other GNU
2106 packages. The `sysdeps' directory hierarchy is much rearranged.
2107 The file `INSTALL' explains the new scheme in detail.
2109 * The header files no longer need to be processed into ANSI C and
2110 traditional C versions. There is just one set of files to install, and
2111 it will work with ANSI or old C compilers (including `gcc -traditional').
2113 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2114 MIPS DECStation running Ultrix 4.
2116 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2117 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2118 made itself into a shared library.
2120 * Yet further improved support for the i386, running 4.3 BSD-like systems
2121 (such as Mach 3 with the Unix single-server), or System V.
2123 * New function `strncasecmp' to do case-insensitive string comparison
2124 with limited length.
2126 * New function `strsep' is a reentrant alternative to `strtok'.
2128 * New functions `scandir' and `alphasort' for searching directories.
2130 * New function `setenv' is a better interface to `putenv'.
2132 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2133 function for traversing a directory tree.
2135 * The GNU obstack package is now also part of the C library.
2136 The new function `open_obstack_stream' creates a stdio stream that
2137 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2138 formatted output directly to an obstack.
2140 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2141 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2143 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2145 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2146 things to your strings.
2148 * There are some new test programs: test-fseek, testmb, and testrand.
2150 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2151 These ports are not finished, but are a good starting place for really
2152 supporting those systems.
2154 * `/etc/localtime' is now the standard location for the file that says what
2155 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2156 This follows the general principle that `/etc' is the place for all local
2157 configuration files.
2159 * The C library header files now use `extern "C"' when used by the C++
2160 compiler, so the C library should now work with C++ code.
2162 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2163 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2166 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2167 function which uses the `merge sort' algorithm, and is said to be
2168 significantly faster than the old GNU `qsort' function. Merge sort is
2169 now the standard `qsort' function. The new algorithm can require a lot
2170 of temporary storage; so, the old sorting function is called when the
2171 required storage is not available.
2173 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2174 provides the Unix `crypt' function, plus some other entry points.
2176 * The code and header files taken from 4.4 BSD have been updated with the
2177 latest files released from Berkeley.
2179 ----------------------------------------------------------------------
2180 Copyright information:
2182 Copyright (C) 1992-2012 Free Software Foundation, Inc.
2184 Permission is granted to anyone to make or distribute verbatim copies
2185 of this document as received, in any medium, provided that the
2186 copyright notice and this permission notice are preserved,
2187 thus giving the recipient permission to redistribute in turn.
2189 Permission is granted to distribute modified versions
2190 of this document, or of portions of it,
2191 under the above conditions, provided also that they
2192 carry prominent notices stating who last changed them.
2195 version-control: never
projects / thirdparty / glibc.git / blob