1 GNU C Library NEWS -- history of user-visible changes.
2 Copyright (C) 1992-2013 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 2546, 2560, 5159, 6809, 10060, 10062, 10357, 11120, 11561, 12387, 12723,
13 13550, 13889, 13951, 13988, 14142, 14176, 14200, 14280, 14293, 14317,
14 14327, 14478, 14496, 14582, 14686, 14812, 14888, 14908, 14920, 14952,
15 14964, 14981, 14982, 14985, 14994, 14996, 15000, 15003, 15006, 15007,
16 15020, 15023, 15036, 15054, 15055, 15062, 15078, 15084, 15085, 15086,
17 15160, 15214, 15221, 15232, 15234, 15283, 15285, 15287, 15304, 15305,
18 15307, 15309, 15327, 15330, 15335, 15336, 15337, 15342, 15346, 15359,
19 15361, 15366, 15380, 15394, 15395, 15405, 15406, 15409, 15416, 15418,
20 15419, 15423, 15426, 15429, 15448.
22 * CVE-2013-0242 Buffer overrun in regexp matcher has been fixed (Bugzilla
25 * CVE-2013-1914 Stack overflow in getaddrinfo with many results has been
26 fixed (Bugzilla #15330).
28 * Add support for calling C++11 thread_local object destructors on thread
29 and program exit. This needs compiler support for offloading C++11
30 destructor calls to glibc.
32 * Improved worst case performance of libm functions with double inputs and
35 * Support for priority inherited mutexes in pthread condition variables on
36 non-x86 architectures.
38 * Added a benchmark framework to track performance of functions in glibc.
40 * New <math.h> macro named issignaling to check for a signaling NaN (sNaN).
41 It is based on draft TS 18661 and currently enabled as a GNU extension.
45 * The following bugs are resolved with this release:
47 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
48 9685, 9914, 10014, 10038, 10114, 10191, 10631, 10873, 11438, 11607, 11638,
49 11741, 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679,
50 13696, 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950,
51 13952, 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157,
52 14166, 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298,
53 14303, 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376,
54 14417, 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518,
55 14519, 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568,
56 14576, 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645,
57 14648, 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719,
58 14743, 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803,
59 14805, 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833,
60 14835, 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872,
61 14879, 14889, 14893, 14898, 14914.
63 * Optimization of memcpy for MIPS.
65 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
66 EMFILE has been fixed (Bugzilla #14889).
68 * The add-on ports collection is now distributed in the "ports" subdirectory
69 of the main GNU C Library distribution, rather than separately.
71 * Port to ARM AArch64 contributed by Linaro.
73 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
74 Optimized versions of memcpy, memset, and memcmp added for System z10 and
76 Implemented by Andreas Krebbel.
78 * The new function secure_getenv allows secure access to the environment,
79 returning NULL if running in a SUID/SGID process. This function replaces
80 the internal function __secure_getenv.
82 * SystemTap static probes have been added into the dynamic linker.
83 Implemented by Gary Benson.
85 * Optimizations of string functions strstr, strcasestr and memmem.
86 Implemented by Maxim Kuvyrkov.
88 * The minimum Linux kernel version that this version of the GNU C Library
89 can be used with is 2.6.16.
91 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
92 powerpc POWER7. Implemented by Will Schmidt.
94 * New configure option --disable-nscd builds the C library such that it
95 never attempts to contact the Name Service Caching Daemon (nscd).
96 New configure option --disable-build-nscd avoids building nscd itself;
97 this is the default if --disable-nscd is used.
99 * Improved support for cross-compilation, including cross-testing and
100 bootstrap builds without a previously built glibc.
102 * Several testsuite tests are now able to test multiple IFUNC variants of an
103 interface, rather than just testing the one that would be chooen by
106 * New configure options --with-bugurl and --with-pkgversion, for
107 distributors to use to embed their bug-reporting and package version
108 information in --help and --version output.
110 * The ttyname and ttyname_r functions on Linux now fall back to searching for
111 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
112 allows creation of chroots without the procfs mounted on /proc.
114 * The `crypt' function now fails if passed salt bytes that violate the
115 specification for those values. On Linux, the `crypt' function will
116 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
117 enabled, and fail on encrypted strings using the MD5 or DES algorithm
118 when the mode is enabled.
120 * The `clock_*' suite of functions (declared in <time.h>) is now available
121 directly in the main C library. Previously it was necessary to link with
122 -lrt to use these functions. This change has the effect that a
123 single-threaded program that uses a function such as `clock_gettime' (and
124 is not linked with -lrt) will no longer implicitly load the pthreads
125 library at runtime and so will not suffer the overheads associated with
126 multi-thread support in other code such as the C++ runtime library.
128 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
133 * The following bugs are resolved with this release:
135 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
136 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
137 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
138 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
139 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
140 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
141 11261, 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047,
142 12097, 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495,
143 13058, 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531,
144 13532, 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563,
145 13566, 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656,
146 13658, 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738,
147 13739, 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792,
148 13806, 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854,
149 13871, 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892,
150 13895, 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917,
151 13918, 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928,
152 13938, 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970,
153 13973, 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036,
154 14040, 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064,
155 14075, 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123,
156 14134, 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273,
159 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
160 configuring glibc with:
161 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
162 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
163 Implemented by H.J. Lu.
167 + define static_assert
169 + do not declare gets
171 + declare at_quick_exit and quick_exit also for ISO C11
173 + aligned_alloc. NB: The code is deliberately allows the size parameter
174 to not be a multiple of the alignment. This is a moronic requirement
175 in the standard but it is only a requirement on the caller, not the
180 + uchar.h support added
182 + CMPLX, CMPLXF, CMPLXL added
184 Implemented by Ulrich Drepper.
186 * Support for the IA-64 has been moved to ports.
188 * Remove support for anything but ELF binary format
190 * Checking versions of poll, ppoll added.
191 Implemented by Ulrich Drepper.
193 * More generic and 64-bit performance optimizations to math functions.
194 Implemented by Ulrich Drepper.
196 * New configure option --enable-obsolete-rpc makes the deprecated RPC
197 headers and functions available at compile time as they were before
198 version 2.14. This option will be removed at some time in the future
199 after the TI-RPC library becomes fully sufficient for the needs of
200 existing applications.
202 * Compatibility code for Linux kernel versions before 2.4 has been removed.
203 Note that glibc is not expected to work with any Linux kernel version
206 * New header <sys/auxv.h> and function getauxval allowing easy access to
207 the AT_* key-value pairs passed from the Linux kernel. The header also
208 defines the HWCAP_* bits associated with the AT_HWCAP key.
210 * New locales: mag_IN
212 * New configure option --enable-systemtap builds SystemTap static probes
213 into libc for setjmp and longjmp and into libpthread for various operations.
214 So far the setjmp/longjmp probes and some of the libpthread probes are
215 provided only for i*86 and x86_64.
216 Implemented by Roland McGrath and Rayson Ho.
218 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
220 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
223 * More optimized functions for SPARC. Implemented by David S. Miller.
225 * Improved support for cross-compilation, especially bootstrap builds
226 without a previously built glibc.
228 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
229 Chris Metcalf from Tilera.
231 * Support for the old ARM ABI has been removed from ports. Only the EABI is
232 now supported for ARM processors.
234 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
235 as the name of the dynamic linker, to distinguish it from the
236 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
238 * Support for CRIS has been removed from ports.
240 * A new class of installed header has been documented for low-level
241 platform-specific functionality. PowerPC added the first instance with a
242 function to provide time base register access. Contributed by Tulio
243 Magno Quites Machado Filho.
245 * ix86 configurations now install header files that are consistent with
246 what x86-64 configurations install. These same header files can be used
247 for -m32, -m64, or -mx32 builds.
248 Contributed by H.J. Lu.
250 * Math library bug fixes. A thorough audit of all open math library bugs was
251 conducted by Joseph Myers. Significant progress was made on many math
252 library bugs resulting in more accurate exceptions and function results.
253 Many thanks to all those that contributed including Andreas Jaeger for his
254 patch review and work on the x87 trigonometric instruction issues.
256 * Timezone data is no longer installed. Timezone-related binaries and scripts
257 will continue to be installed. Users should obtain their timezone data from
258 their distribution provider or from the tzdata package at
259 <ftp://munnari.oz.au/pub/>.
263 * The following bugs are resolved with this release:
265 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
266 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
267 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
268 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
269 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
270 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
271 13484, 13506, 13515, 13523, 13524, 13538, 13540
273 * New program pldd to list loaded object of a process
274 Implemented by Ulrich Drepper.
276 * Add nss_db support back to glibc. No more dependency on Berkeley db
277 and support for initgroups lookups.
278 Implemented by Ulrich Drepper.
280 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
281 Contributed by HJ Lu.
283 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
284 Contributed by HJ Lu.
286 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
287 on x86-32 and x86-64.
288 Contributed by Liubov Dmitrieva.
290 * Optimized strchr and strrchr for SSE on x86-32.
291 Contributed by Liubov Dmitrieva.
293 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
294 for x86-64 and x86-32.
295 Contributed by Liubov Dmitrieva.
297 * New interfaces: scandirat, scandirat64
298 Implemented by Ulrich Drepper.
300 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
301 Implemented by Ulrich Drepper.
303 * nscd now also caches the netgroup database.
304 Implemented by Ulrich Drepper.
306 * Integrate libm with gcc's -ffinite-math-only option.
307 Implemented by Ulrich Drepper.
309 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
310 to math functions. Implemented by Ulrich Drepper.
312 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
313 Implemented by Ulrich Drepper.
315 * New Linux interfaces: process_vm_readv, process_vm_writev
317 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
318 Implemented by Ulrich Drepper.
320 * Optimized nearbyint and strcasecmp for PPC.
321 Implemented by Adhemerval Zanella.
323 * New locales: bho_IN, unm_US, es_CU, ta_LK
327 * The following bugs are resolved with this release:
329 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
330 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
331 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
332 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
333 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
334 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
335 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
336 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
337 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
338 12795, 12811, 12813, 12814, 12841
340 * The RPC implementation in libc is obsoleted. Old programs keep working
341 but new programs cannot be linked with the routines in libc anymore.
342 Programs in need of RPC functionality must be linked against TI-RPC.
343 The TI-RPC implementation is IPv6 enabled and there are other benefits.
345 Visible changes of this change include (obviously) the inability to link
346 programs using RPC functions without referencing the TI-RPC library and the
347 removal of the RPC headers from the glibc headers.
348 Implemented by Ulrich Drepper.
350 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
351 syncfs, setns, sendmmsg
353 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
354 yue_HK, lij_IT, mhr_RU
356 * New encodings: CP770, CP771, CP772, CP773, CP774
358 * New program sotruss to trace calls through PLTs
359 Implemented by Ulrich Drepper.
361 * The malloc hook implementation is marked deprecated and will be removed
362 from the default implementation in the next version. The design never
363 worked ever since the introduction of threads. Even programs which do
364 not create threads themselves can use multiple threads created internally.
368 * The following bugs are resolved with this release:
370 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
371 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
372 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
373 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
376 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
378 * POWER7 optimizations: memset, memcmp, strncmp
380 * New optimized string functions for x86-64: strnlen (SSE2),
381 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
382 Implemented by Ulrich Drepper.
386 * The following bugs are resolved with this release:
388 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915,
389 10918, 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001,
390 11007, 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070,
391 11093, 11115, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
392 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
393 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
394 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
395 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
397 * New interfaces: pthread_getname_np, pthread_setname_np
399 * New Linux interface: recvmmsg
401 * STT_GNU_IFUNC implemented for Sparc by David Miller.
403 * The dynamic linker now recognizes supported ABI versions from the
404 EI_ABIVERSION field in the ELF header.
405 Implemented by Ulrich Drepper.
407 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
408 will not be used to fill in password fields in the passwd.byname replies.
409 Instead it is used to synthesize the shadow.byname table, should it be
410 missing. This is a useful mode in some installations involving Solaris.
411 Implemented by Ulrich Drepper.
413 * New locales: kok_IN, sq_MK, cv_RU
417 * The following bugs are resolved with this release:
419 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
420 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
421 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
422 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
423 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
424 10789, 10817, 10823, 10840, 10847
426 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
428 Implemented by Ulrich Drepper.
430 * Checking version of longjmp added that fails if an uninitialized stack
431 frame would be created. Implemented by Ulrich Drepper.
433 * STT_GNU_IFUNC is now supported in static executables.
434 Implemented by H.J. Lu.
436 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
438 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
439 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
440 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
441 Contributed by H.J. Lu.
443 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
444 Implemented by Ulrich Drepper.
446 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
448 Contributed by H.J. Lu.
450 * Support for fma instruction in AVX on x86-64.
451 Implemented by H.J. Lu and Ulrich Drepper.
453 * AVX support in x86-64 auditing support in ld.so.
454 Implemented by H.J. Lu.
456 * STB_GNU_UNIQUE support added.
457 Implemented by Ulrich Drepper.
459 * Implement second fallback mode for optimized DNS lookup for even more
460 broken environments. If two requests from the same port are not
461 handled correctly close the socket and open a new one before sending
462 the second request. The 'single-request-reopen' option in /etc/resolv.conf
463 can be used to select this mode right away, instead of rediscovering the
464 necessity is every process again.
465 Implemented by Ulrich Drepper.
467 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
468 Implemented by Adam Tkac.
470 * Optimized iconv conversions for S390x.
471 Implemented by Andreas Krebbel.
473 * Using condvars with PI mutexes is now more efficient due to kernel
474 support for requeueing to PI futexes. NPTL support added for x86-64.
475 Implemented by Ulrich Drepper.
477 * New locales: ps_AF, my_MM
481 * The following bugs are resolved with this release:
483 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
484 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
485 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
486 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
487 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
489 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
490 Implemented by Ulrich Drepper.
492 * New Linux interfaces: accept4, fallocate, fallocate64.
493 Implemented by Ulrich Drepper.
495 * Correct declarations of string function when used in C++ code. This
496 could lead to compile errors for invalid C++ code.
498 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
501 * New POSIX 2008 interface: psiginfo
502 Implemented by Ulrich Drepper.
504 * New ISO C++1x interfaces: quick_exit, at_quick_exit
505 Implemented by Ulrich Drepper.
507 * Support for selecting between multiple function definitions at runtime
508 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
510 * The libcrypt library can now use the hash function implementations in
511 NSS. Implemented by Ulrich Drepper.
513 * The malloc implementation can be compiled to be less memory efficient
514 but higher performing in multi-threaded programs.
515 Implemented by Ulrich Drepper.
517 * New locales: nan_TW@latin, ks_IN
519 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
520 Implemented by Ulrich Drepper.
522 * Extended printf hook support. It is possible to use user-defined types
523 and extend existing format specifiers.
524 Implemented by Ulrich Drepper.
526 * Handling for group shadow files has been added.
527 Implemented by Ulrich Drepper.
529 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
530 servers (the case, e.g., for some people using the built-in DNS
531 server in ADSL modems/routers). There is a once-per-process timeout
532 in case of a broken server. To avoid it, users can run nscd or put
533 'options single-request' in /etc/resolv.conf.
534 Implemented by Ulrich Drepper.
538 * The following bugs are resolved with this release:
540 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
541 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
542 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
543 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
544 6968, 6974, 6980, 6995, 7008, 7009, 7029
546 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
547 up at the same time. Implemented by Ulrich Drepper.
549 * TLS descriptors for LD and GD on x86 and x86-64.
550 Implemented by Alexandre Oliva.
552 * getaddrinfo now handles DCCP and UDPlite.
553 Implemented by Ulrich Drepper.
555 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
556 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
557 Implemented by Ulrich Drepper.
559 * New implementation of memmem, strstr, and strcasestr which is O(n).
560 Implemented by Eric Blake.
562 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
564 * Implement "e" option for popen to open file descriptor with the
565 close-on-exec flag set. Implemented by Ulrich Drepper.
567 * Implement "b" mode for fmemopen. In this mode writes writes don't
568 implicitly add a NUL byte and seeks from the end of the buffer really
569 use the buffer end, not the string length as the basis.
570 Implemented by Ulrich Drepper.
572 * Many functions, exported and internal, now atomically set the close-on-exec
573 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
575 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
577 Implemented by Pravin Satpute.
579 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
583 * The following bugs are resolved with this release:
585 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
586 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
587 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
588 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
589 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
590 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
591 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
593 * New locales: bo_CN, bo_IN, shs_CA.
595 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
597 * Sorting rules for some Indian languages (Devanagari and Gujarati).
598 Implemented by Pravin Satpute.
600 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
602 * nscd caches now all timeouts for DNS entries
603 Implemented by Ulrich Drepper.
605 * nscd is more efficient and wakes up less often.
606 Implemented by Ulrich Drepper.
608 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
609 vdprintf, and obstack_vprintf.
610 Implemented by Jakub Jelinek.
612 * Faster memset for x86-64.
613 Implemented by Harsha Jagasia and H.J. Lu.
615 * Faster memcpy on x86.
616 Implemented by Ulrich Drepper.
618 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
619 Implemented by Ulrich Drepper.
621 * Faster sqrt and sqrtf implemention for some PPC variants.
622 Implemented by Steven Munroe.
626 * The following bugs are resolved with this release:
628 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
629 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
630 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
631 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
632 5071, 5103, 5104, 5112, 5113, 5184, 5186
634 * More checking functions: fread, fread_unlocked, open*, mq_open.
635 Implemented by Jakub Jelinek and Ulrich Drepper.
637 * Extend fortification to C++. Implemented by Jakub Jelinek.
639 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
640 by not recognizing 'a' as a modifier when those specs are requested.
641 Implemented by Jakub Jelinek.
643 * PPC optimizations to math and string functions.
644 Implemented by Steven Munroe.
646 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
647 options to be passed. Implemented by Ulrich Drepper.
649 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
651 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
652 Implemented by Ulrich Drepper.
654 * Handle private futexes in the NPTL implementation.
655 Implemented by Jakub Jelinek and Ulrich Drepper.
657 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
658 Implemented by Roland McGrath and Ulrich Drepper.
660 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
662 * SHA-256 and SHA-512 based password encryption.
663 Implemented by Ulrich Drepper.
665 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
666 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
669 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
670 Implemented by Ulrich Drepper.
674 * The following bugs are resolved with this release:
676 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
677 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
678 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
679 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
680 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
681 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
682 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
685 * New Linux interfaces: epoll_pwait, sched_getcpu.
687 * New generic interfaces: strerror_l.
689 * nscd can now cache the services database. Implemented by Ulrich Drepper.
693 * The following bugs are resolved with this release:
695 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
696 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
697 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
698 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
699 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
700 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
701 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
702 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
703 3225, 3251, 3252, 3253, 3273
705 * For Linux, the sorting of addresses returned by getaddrinfo now also
706 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
707 Implemented by Ulrich Drepper.
709 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
710 Implemented by Ulrich Drepper.
712 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
714 * New iconv module for MIK. Contributed by Alexander Shopov.
716 * For sites with broken group and/or passwd database, the auto-propagate
717 option of nscd can prevent creating ID lookup entries from the results
718 of a name lookup and vice versa. This usually is no problem but some
719 site might have problems with the default behavior.
720 Implemented by Ulrich Drepper.
722 * Iterating over entire database in NIS can be slow. With the
723 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
724 to trade time for memory. The entire database will be read at once.
725 Implemented by Ulrich Drepper.
727 * The interfaces introduced in RFC 3542 have been implemented by
730 * Support for the new ELF hash table format was added by Ulrich Drepper.
732 * Support for priority inheritance mutexes added by Jakub Jelinek and
735 * Support for priority protected mutexes added by Jakub Jelinek.
737 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
738 or_IN, csb_PL, fy_NL, sr_ME.
742 * More overflow detection functions.
744 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
745 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
747 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
748 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
749 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
750 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
751 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
752 by Masahide Washizawa.
754 * It is now possible to install audit libraries for the dynamic linker using
755 LD_AUDIT. Implemented by Ulrich Drepper.
757 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
758 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
759 For a libc and libpthread that works well on Linux 2.4 kernels, we
760 recommend using the stable 2.3 branch.
762 * The new function open_wmemstream acts like open_memstream,
763 but uses a wchar_t wide character buffer.
765 * The new function ppoll is an improved version of poll, similar to pselect.
767 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
768 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
769 renameat, unlinkat, linkat, symlinkat, readlinkat.
771 * New Linux kernel system calls: unshare,
772 inotify_init, inotify_add_watch, inotify_rm_watch.
774 * The euidaccess function is now also known by the alias eaccess,
775 for compatibility with some other systems.
777 * Timezone data updated to 2006b version.
781 * The following bugs are resolved with this release:
783 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
784 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
785 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
786 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
787 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
788 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
790 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
792 * As of this release, GCC 4 can be used to compile the C Library.
794 * Timezone data updated to 2005m version.
798 * The following bugs are resolved with this release:
800 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
801 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
802 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
803 777, 787, 821, 822, 823, 825
805 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
809 * Support for RFC 3678. Real implementations exist only for Linux so far.
810 Implemented by Ulrich Drepper.
812 * nscd can now cache entries persistently. Expiring entries are reloaded.
813 For speedups the cache can be shared in memory with client processes.
814 Implemented by Ulrich Drepper.
816 * nscd can now perform SELinux checks.
817 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
819 * getaddrinfo queries are now cached. Canonical name lookup is performed
821 Implemented by Ulrich Drepper.
823 * The nothrow function attribute is used when headers are used by gcc when
824 compiling C code. This can avoid significant amounts of exception
827 * The malloc functions perform more error checking and are stricter when
828 it comes to reacting on errors. The default action is to terminate
829 the process after showing an error message. Implemented by Ulrich Drepper.
831 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
832 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
834 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
835 namespaces using the new function dlmopen(). This feature is of course,
836 like most other dynamic loading functionality, not available in statically
837 linked applications. Implemented by Ulrich Drepper.
839 * Low-overhead boundary checking variants of string and some stdio functions
840 were added. These are to be used in conjunction with a gcc patch by
841 Jakub Jelinek which adds calls to these functions if possible.
842 Implemented by Jakub Jelinek and Ulrich Drepper.
844 * Old code for several operating systems and machine architectures that
845 have not been in working condition in a long time have been removed from
846 the main source tree maintained by the GNU C Library's maintainers.
847 These files are now reside in the separate `ports' source module
848 that is usable as an add-on when building the library.
852 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
853 interrogate the dynamic linker, compatible with the Solaris interface.
855 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
856 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
858 * getifaddrs now uses the netlink interface on Linux to get its information.
859 Implemented by Thorsten Kukuk.
861 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
862 Implemented by Ulrich Drepper.
864 * support for non-executable stacks on x86 has been added. Changes mostly
867 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
870 * getaddrinfo now performs destination address selection according to
875 * Thread-safe interfaces for many functions that access locale data
876 were added in version 2.3, but these features were omitted from NEWS.
877 Many functions have variants with an `_l' suffix that take a `locale_t'
878 object as a parameter rather than consulting the current locale.
879 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
880 create and maintain `locale_t' objects. Additionally, the new function
881 `uselocale' sets "the current locale" (as used by functions not so
882 parameterized) set for an individual thread. These features were added
883 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
885 * The functions getresuid, getresgid, setresuid, and setresgid, which
886 have long been available on Linux, are now declared in <unistd.h>
887 and are now also available on the Hurd.
889 * ELF thread-local storage support (TLS) now works on x86-64.
891 * The new dynamic string token $LIB is expanded in shared library names.
892 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
894 * Aldy Hernandez contributed complete software floating point support for
895 PowerPC machines with no FPU.
897 * fexecve is implemented on Linux.
899 * The `btowc' function should work at least twice as fast due to
900 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
902 * With approriate thread add-ons cancelable functions are now implemented
903 in libc.so as well. No need to call the function in libpthread. This
904 change allowed to finally disable the incorrect and expensive handling
905 of weak definition in ld.so.
907 * Yet more PLT entries in libc.so have been removed. We finally arrived
908 at the bare minimum. Startup times improved appropriately.
910 * Support for the new Linux/x86 system call interface was added. The
911 AT_SYSINFO auxiliary vector entry is recognized and handled.
915 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
918 * iconv (the program and the interface) now accepts empty names (excluding
919 options like //TRANSLIT) to mean "use charset of current locale".
921 * localedef can now transliterate characters in strings which are not in
922 the provided charmap. The information from the input locale is used.
924 * Prelinking support was added for ELF targets. This requires additional
925 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
927 * Read-only stdio streams now use mmap to speed up operation by eliminating
928 copying and buffer underflows. To use add 'm' to the mode string of
929 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
931 * The malloc functions were completely rewritten by Wolfram Gloger based
932 on Doug Lea's malloc-2.7.0.c.
934 * Isamu Hasegawa contributed a completely new and POSIX-conformant
935 implementation of regex.
937 * Bruno Haible upgraded the iconv and locale implementation to support
940 * Contents of the LC_* and LANG environment variables in the CEN style are
941 not recognized anymore. It never was used. Change by Ulrich Drepper.
943 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
944 thread-local storage (TLS) ABI on some platforms.
945 Changes by Ulrich Drepper. SH support by Kaz Kojima.
947 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
948 EUC-JISX0213, and TSCII.
950 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
951 BSD-compatible interface for getting all network interface addresses.
952 Implementation for IPv4 by Roland McGrath.
954 * Loading of locale data is faster due to the introduction of a locale
955 archive. Implemented by Roland McGrath and Ulrich Drepper.
957 * Startup times are significantly reduced by not using exported functions
958 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
961 * Steven Munroe contributed a port to PowerPC64/Linux.
965 * The Hurd now uses the GNU libio implementation of stdio rather than the
966 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
968 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
969 with the same behavior as the Linux system call of the same name.
973 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
974 128-bit long double format.
976 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
977 IBM1161, and IBM1162 charsets.
979 * Andreas Jaeger contributed a port to x86-64/Linux.
981 * Peter Bruin contributed a port to PowerPC/Hurd.
983 * libc functions using I/O streams now can handle wide-oriented streams
986 * optimizations in the dynamic linker. Binaries created by recent binutils
987 versions start up quicker due to reduced time spent on relocations.
989 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
993 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
994 asinh, atanh, j0 for the 128-bit long double format.
996 * Bruno Haible updated all the code handling Unicode in some form to
999 * Speed of regex for single-byte locales is back to previous levels.
1000 Patch by Isamu Hasegawa.
1002 * Alpha, SPARC, and IA-64 now also using floating stacks.
1004 * Startup time of internationalized applications greatly improved through
1005 iconv cache. Use iconvconfig to generate the cache file.
1006 Contributed by Ulrich Drepper.
1008 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
1009 severe performance problems. Patch by David Mosberger.
1011 * The Hurd port got a lot more functionality like AIO, various stdio
1012 extensions, etc. Mainly done by Roland McGrath.
1014 * mtrace can now lookup symbols in shared libraries.
1018 * Intel's IA-64 math library is largely integrated. It provides fast and
1019 accurate implementatations for most basic and standard math functions
1020 in float, double, and long double format.
1022 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1023 and asin for the 96-bit long double format and asin, log, tan for the
1024 128-bit long double format.
1026 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1027 The basic double functions exist today. Contributed by Abraham Ziv
1028 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1029 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1031 * An asynchronous name lookup library was added. The interface is designed
1032 after POSIX AIO. The proposal was circulated beforehand to get comments.
1033 No negative ones came in. Implemented by Ulrich Drepper.
1035 * Port to S390/64bit contributed by Martin Schwidefsky
1036 <schwidefsky@de.ibm.com>.
1038 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1039 of functions for Linux/IA-64.
1041 * The RPC code is now thread safe. Threads can now use the same service
1042 of different services at the same time. Patch by Eric Norum
1043 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1045 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1046 family of functions for Linux/S390.
1048 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1049 of functions for Linux/x86.
1051 * Port to Linux/CRIS contributed by Axis Communications.
1055 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1056 we can now check for namespace violations and missing declarations. The
1057 result is that almost all headers are now Unix-compliant (as defined in
1058 the upcoming XPG6). The negative side is that some programs might need
1059 corrections, too, if they depend on the incorrect form of the headers in
1060 previous versions which defined too many symbols and included too many
1063 * regex now handles multibyte character sets correctly.
1064 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1066 * iconv (the program) does now conform to the upcoming XPG6 and handles
1067 charmaps. Instead of the charset names the path of charmaps can be
1068 provided and the conversion happens based on this data.
1069 Contributed by Ulrich Drepper.
1071 * The locale program now provides detailed information about the installed
1076 only lists the names of the supported locales
1080 provides details such as country, language, and codeset name.
1081 Contributed by Ulrich Drepper.
1085 * The gencat program now parses the input file according to the charset
1086 selected by the LC_CTYPE category. This is important for stateful
1087 character sets. To make generating catalogs easier there is a way
1088 to overwrite the charset selected by the locale: before the first
1089 message or $ quote line the catalog can contain a line like
1091 $ codeset=ISO-8859-2
1093 to select the charset (ISO-8859-2 in this case).
1095 Implemented by Shinya Hanataka and Ulrich Drepper.
1097 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1098 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1099 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1101 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1102 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1104 * The LANGUAGE environment variable is now ignored unless the locale is
1105 changed from the default "C" locale.
1107 * The usual bug fixes.
1111 * Greg McGary added runtime support for bounds checking using gcc's
1112 new -fbounded-pointers option. ix86 target is complete. PowerPC
1115 * Thorsten Kukuk added secure mode support to nscd.
1117 * The Berkeley db libraries have been removed.
1119 Related, the nss_db module is now in a separate package since it
1120 obviously requires a database library being available.
1122 * Wide character I/O streams implemented by Ulrich Drepper.
1124 * Functions from the extended socket API added by Ulrich Drepper.
1126 * Functions feenableexcept and fedisableexcept to control the
1127 behaviour of individual exceptions have been added by Andreas Jaeger.
1129 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1131 * The resolver code has been updated from bind 8.2.3-T5B which supports
1132 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1135 This change could in some situations effect backward compatibility. Since
1136 now `_res' is a thread-local instead of a global variable, modifying it
1137 in one thread does not have any effect in other threads.
1139 The resolver library was also extended to allow IPv6 as the transport
1140 protocol for the requests. This work was done by Stig Venaas.
1142 * Compatibility code for K&R C compilers has been removed from the
1143 header files. A ISO C compiler is needed to use the library
1144 (conforming to either C89 or C99 standard).
1146 * Complete rewrite of the localedef program to support multibyte character
1147 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1148 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1149 Implemented by Ulrich Drepper.
1151 Bruno Haible significantly improved the generation and use of the data
1152 structures for the wide character tables.
1154 * Plural handling in gettext implemented by Ulrich Drepper.
1156 * The utmp daemon has been removed.
1158 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1160 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1163 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1165 * POSIX barriers implemented by Kaz Kylheku.
1167 * POSIX spawn function family implemented by Ulrich Drepper.
1169 * POSIX spinlocks are now available.
1171 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1173 * the configure option --enable-kernel=X.Y.Z allows to strip out
1174 compatibility for kernel versions before X.Y.Z. This is currently only
1175 implemented for Linux.
1177 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1178 field sin6_scope_id. This means that all programs using IPv6 should be
1179 recompiled. Don't expect binary compatibility with previous glibc
1182 * various conversion modules for IBM character sets contributed by
1185 * IA-64 port by Jes Sorensen and HJ Lu.
1199 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1201 * New xdr functions are added; some rpc functions are now 64bit clean.
1203 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1205 * Fixed known incompatibilities with glibc 2.0.
1207 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1209 * Optimized a number of functions (especially the ELF dynamic loader).
1211 * Update timezone data files.
1213 * lots of charmaps corrections
1215 * some new locale definitions and charmaps
1220 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1221 conform to POSIX member type requirements. Symbol versions have been
1222 adjusted as needed within the library, and for direct use by applications,
1223 but there is potential for problems if third-party libraries use
1224 struct timeval as part of their interface. This does not present
1225 a problem for X and other "essential" system libraries.
1227 * An additional locale model to support C++ Standard Library locale
1228 model and probably more was implemented by Ulrich Drepper.
1230 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1233 * Miles Bader provided the `argp' function family to support hierachical
1234 command line argument parsing, layered on top of getopt.
1236 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1238 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1241 * scanf recognizes the %a and %A format for scanning floating point numbers.
1243 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1244 information and interfaces for the available integer types.
1246 * about 130 new math functions were added to implement the ISO C9x math
1249 * the new header <complex.h> contains definitions of the complex math
1250 functions from ISO C 9X.
1252 * the new header <tgmath.h> defines generic macros to use complex or
1253 real valued functions.
1255 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1257 * Andreas Jaeger provided a test suite for the math library.
1259 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1261 * Ulrich Drepper added character set conversion functions (iconv).
1263 * Optimized string functions have been added.
1265 * The localedata addon is now part of glibc.
1267 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1269 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1270 daemon for NSS (nscd).
1272 Missing a better place here are some numbers on improvements. Under
1273 Linux 2.1.125 un-tar-ing the kernel sources takes
1277 using local files 12.19s 6.88s 22.91s
1279 using NIS 13.92s 8.91s 26.34s
1281 using NIS & nscd 10.37s 7.34s 25.30s
1283 using NIS+ 27.57s 30.37s 640.46s
1285 using NIS+ & nscd 10.25s 7.83s 26.51s
1287 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1289 Keep in mind that non-namelookup related operations dominate above times.
1290 It was just a common complain that using NIS+ unpacking the kernel is
1293 [1] The old nscd implementation is not available anymore since it was
1294 distributed with glibc up to version 2.0.98 and thus is now replaced.
1296 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1298 * Mark Kettenis provided a Hesiod NSS module.
1300 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1301 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1303 * rcmd can now handle netgroups (Dick Streefland).
1305 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1308 * Support for the IPv6 protocol has been added to the socket API, as per the
1309 latest draft standards.
1311 * Support for Linux 2.2 has been added.
1313 * Interface changes relative to the latest 2.0.x release:
1314 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1315 addseverity NEW: Unix98
1316 alphasort64 NEW: LFS
1317 argp_err_exit_status NEW: argp, GNU ext
1318 argp_error NEW: argp, GNU ext
1319 argp_failure NEW: argp, GNU ext
1320 argp_help NEW: argp, GNU ext
1321 argp_parse NEW: argp, GNU ext
1322 argp_program_bug_address NEW: argp, GNU ext
1323 argp_program_version NEW: argp, GNU ext
1324 argp_program_version_hook NEW: argp, GNU ext
1325 argp_state_help NEW: argp, GNU ext
1326 argp_usage NEW: argp, GNU ext
1327 authdes_create NEW: Secure RPC
1328 authdes_getucred NEW: Secure RPC
1329 authdes_pk_create NEW: Secure RPC
1330 backtrace NEW: GNU ext.
1331 backtrace_symbols NEW: GNU ext.
1332 backtrace_symbols_fd NEW: GNU ext.
1334 cacosf NEW: ISO C 9x
1335 cacosh NEW: ISO C 9x
1336 cacoshf NEW: ISO C 9x
1337 cacoshl NEW: ISO C 9x
1338 cacosl NEW: ISO C 9x
1345 casinf NEW: ISO C 9x
1346 casinh NEW: ISO C 9x
1347 casinhf NEW: ISO C 9x
1348 casinhl NEW: ISO C 9x
1349 casinl NEW: ISO C 9x
1351 catanf NEW: ISO C 9x
1352 catanh NEW: ISO C 9x
1353 catanhf NEW: ISO C 9x
1354 catanhl NEW: ISO C 9x
1355 catanl NEW: ISO C 9x
1356 cbc_crypt NEW: Secure RPC
1360 ccoshf NEW: ISO C 9x
1361 ccoshl NEW: ISO C 9x
1367 cimagf NEW: ISO C 9x
1368 cimagl NEW: ISO C 9x
1369 clearerr_locked REMOVED
1370 clntunix_create NEW: sunrpc ext
1372 clog10 NEW: ISO C 9x
1373 clog10f NEW: ISO C 9x
1374 clog10l NEW: ISO C 9x
1384 cprojf NEW: ISO C 9x
1385 cprojl NEW: ISO C 9x
1387 crealf NEW: ISO C 9x
1388 creall NEW: ISO C 9x
1393 csinhf NEW: ISO C 9x
1394 csinhl NEW: ISO C 9x
1397 csqrtf NEW: ISO C 9x
1398 csqrtl NEW: ISO C 9x
1402 ctanhf NEW: ISO C 9x
1403 ctanhl NEW: ISO C 9x
1405 des_setparity NEW: Secure RPC
1406 ecb_crypt NEW: Secure RPC
1407 endutxent NEW: Unix98
1409 exp10f NEW: ISO C 9x
1410 exp10l NEW: ISO C 9x
1414 fattach NEW: STREAMS
1415 fdetach NEW: STREAMS
1419 feclearexcept NEW: ISO C 9x
1420 fegetenv NEW: ISO C 9x
1421 fegetexceptflag NEW: ISO C 9x
1422 fegetround NEW: ISO C 9x
1423 feholdexcept NEW: ISO C 9x
1425 feraiseexcept NEW: ISO C 9x
1426 ferror_locked REMOVED
1427 fesetenv NEW: ISO C 9x
1428 fesetexceptflag NEW: ISO C 9x
1429 fesetround NEW: ISO C 9x
1430 fetestexcept NEW: ISO C 9x
1431 feupdateenv NEW: ISO C 9x
1432 fflush_locked REMOVED
1436 fgets_unlocked NEW: GNU ext.
1437 fileno_locked REMOVED
1449 fputc_locked REMOVED
1450 fputs_unlocked NEW: GNU ext.
1451 fread_unlocked NEW: GNU ext.
1456 fstatvfs NEW: Unix98
1460 ftruncate64 NEW: LFS
1462 fwrite_unlocked NEW: GNU ext.
1463 gai_strerror NEW: IPv6
1467 getchar_locked REMOVED
1469 getdate_err NEW: Unix98
1470 getdate_r NEW: GNU ext.
1472 getnameinfo NEW: IPv6
1473 getnetname NEW: Secure RPC
1474 getpmsg NEW: STREAMS
1475 getpt NEW: Unix98 PTY
1476 getrlimit64 NEW: LFS
1477 getutxent NEW: Unix98
1478 getutxid NEW: Unix98
1479 getutxline NEW: Unix98
1480 glob64 NEW: GNU ext.
1481 globfree64 NEW: GNU ext.
1482 gnu_get_libc_release NEW: GNU ext.
1483 gnu_get_libc_version NEW: GNU ext.
1484 grantpt NEW: Unix98 PTY
1485 host2netname NEW: Secure RPC
1487 iconv_close NEW: iconv
1488 iconv_open NEW: iconv
1489 if_freenameindex NEW: IPv6
1490 if_indextoname NEW: IPv6
1491 if_nameindex NEW: IPv6
1492 if_nametoindex NEW: IPv6
1493 in6addr_any NEW: IPv6
1494 in6addr_loopback NEW: IPv6
1495 inet6_isipv4mapped NEW: IPv6
1496 isastream NEW: STREAMS
1497 iswblank NEW: GNU ext.
1498 key_decryptsession NEW: Secure RPC
1499 key_decryptsession_pk NEW: Secure RPC
1500 key_encryptsession NEW: Secure RPC
1501 key_encryptsession_pk NEW: Secure RPC
1502 key_gendes NEW: Secure RPC
1503 key_get_conv NEW: Secure RPC
1504 key_secretkey_is_set NEW: Secure RPC
1505 key_setnet NEW: Secure RPC
1506 key_setsecret NEW: Secure RPC
1507 llrint NEW: ISO C 9x
1508 llrintf NEW: ISO C 9x
1509 llrintl NEW: ISO C 9x
1510 llround NEW: ISO C 9x
1511 llroundf NEW: ISO C 9x
1512 llroundl NEW: ISO C 9x
1517 lrintf NEW: ISO C 9x
1518 lrintl NEW: ISO C 9x
1519 lround NEW: ISO C 9x
1520 lroundf NEW: ISO C 9x
1521 lroundl NEW: ISO C 9x
1523 makecontext NEW: Unix98
1524 mempcpy NEW: GNU ext.
1527 modify_ldt NEW: kernel
1531 nearbyint NEW: ISO C 9x
1532 nearbyintf NEW: ISO C 9x
1533 nearbyintl NEW: ISO C 9x
1534 netname2host NEW: Secure RPC
1535 netname2user NEW: Secure RPC
1536 nexttoward NEW: ISO C 9x
1537 nexttowardf NEW: ISO C 9x
1538 nexttowardl NEW: ISO C 9x
1542 passwd2des NEW: Secure RPC
1544 pow10f NEW: GNU ext.
1545 pow10l NEW: GNU ext.
1548 printf_size NEW: GNU ext.
1549 printf_size_info NEW: GNU ext.
1550 profil_counter REMOVED
1551 pthread_mutexattr_getkind_np REPLACED
1552 pthread_mutexattr_setkind_np REPLACED
1553 ptsname NEW: Unix98 PTY
1554 ptsname_r NEW: Unix98 PTY
1556 putchar_locked REMOVED
1557 putgrent NEW: GNU ext.
1559 putpmsg NEW: STREAMS
1560 pututxline NEW: Unix98
1564 readdir64_r NEW: LFS
1565 remquo NEW: ISO C 9x
1566 remquof NEW: ISO C 9x
1567 remquol NEW: ISO C 9x
1569 roundf NEW: ISO C 9x
1570 roundl NEW: ISO C 9x
1572 scalbln NEW: ISO C 9x
1573 scalblnf NEW: ISO C 9x
1574 scalblnl NEW: ISO C 9x
1576 sendfile NEW: kernel
1577 setcontext NEW: Unix98
1578 setrlimit64 NEW: LFS
1579 setutxent NEW: Unix98
1581 sigignore NEW: Unix98
1582 sigqueue NEW: POSIX.1b
1583 sigrelse NEW: Unix98
1584 sigset NEW: POSIX.1b
1585 sigtimedwait NEW: POSIX.1b
1586 sigwaitinfo NEW: POSIX.1b
1587 sincos NEW: GNU ext.
1588 sincosf NEW: GNU ext.
1589 sincosl NEW: GNU ext.
1593 strcasestr NEW: GNU ext.
1594 strtoimax NEW: ISO C 9x
1595 strtoumax NEW: ISO C 9x
1596 strverscmp NEW: GNU ext.
1597 svcauthdes_stats NEW: Secure RPC
1598 svcunix_create NEW: sunrpc etx
1599 svcunixfd_create NEW: sunrpc ext
1600 swapcontext NEW: Unix98
1601 tcgetsid NEW: Unix98 PTY
1602 tdestroy NEW: GNU ext.
1603 tgamma NEW: ISO C 9x
1604 tgammaf NEW: ISO C 9x
1605 tgammal NEW: ISO C 9x
1609 truncf NEW: ISO C 9x
1610 truncl NEW: ISO C 9x
1612 unlockpt NEW: Unix98 PTY
1613 updwtmpx NEW: Unix98
1614 user2netname NEW: Secure RPC
1615 utmpxname NEW: Unix98
1616 versionsort NEW: GNU ext.
1617 versionsort64 NEW: GNU ext.
1619 wcscasecmp NEW: GNU ext.
1620 wcsncasecmp NEW: GNU ext.
1621 wcsnlen NEW: GNU ext.
1622 wcstoimax NEW: ISO C 9x
1623 wcstoll NEW: ISO C 9x
1624 wcstoull NEW: ISO C 9x
1625 wcstoumax NEW: ISO C 9x
1627 wordexp NEW: POSIX.2
1628 wordfree NEW: POSIX.2
1629 write_profiling REMOVED
1630 xdecrypt NEW: Secure RPC
1631 xdr_authdes_cred NEW: Secure RPC
1632 xdr_authdes_verf NEW: Secure RPC
1633 xdr_cryptkeyarg NEW: Secure RPC
1634 xdr_cryptkeyarg2 NEW: Secure RPC
1635 xdr_cryptkeyres NEW: Secure RPC
1636 xdr_getcredres NEW: Secure RPC
1637 xdr_key_netstarg NEW: Secure RPC
1638 xdr_key_netstres NEW: Secure RPC
1639 xdr_keybuf NEW: Secure RPC
1640 xdr_keystatus NEW: Secure RPC
1641 xdr_netnamestr NEW: Secure RPC
1642 xdr_sizeof NEW: Secure RPC
1643 xdr_unixcred NEW: sunrpc ext
1644 xencrypt NEW: Secure RPC
1645 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1656 * inet_ntoa is thread-safe
1658 * updwtmp is moved from libutil to libc
1660 * rewrite of cbrt function
1662 * update of timezone data
1676 * add atoll function
1678 * fix complex problems in Berkeley DB code
1680 * fix math functions
1684 * fixed lots of header problems (especially Linux/GNU specific)
1686 * dynamic loader preserves all registers
1688 * Roland McGrath provided support for handling of auxiliary objects in
1689 the ELF dynamic loader.
1691 * support for parallel builds is improved
1695 * GNU extensions are no longer declared by default. To enable them you
1696 must define the macro `_GNU_SOURCE' in your program or compile with
1699 * The library has changed from using GNU ld symbol aliases to using weak
1700 symbols where available. The ELF object file format supports weak
1701 symbols; GNU ld also supports weak symbols in the a.out format. (There
1702 is also now support for other GNU ld extensions in ELF. Use the
1703 `--with-elf' option to configure to indicate you have ELF, and
1704 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1705 of many files which contained only symbol aliases, reducing the size of
1706 the source and the compiled library; many other files were renamed to
1707 less cryptic names previously occupied by the symbol alias files.
1708 There is a new header file <elf.h> for programs which operate on
1709 files in the ELF format.
1711 * Converted to Autoconf version 2, so `configure' has more options.
1712 Run `configure --help' to see the details.
1714 * The library can now be configured to build profiling, highly-optimized
1715 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1716 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1717 `configure' enable building these extra libraries. The shared library is
1718 built by default when using both ELF and GNU ld. When shared libraries
1719 are enabled, the new library `-ldl' is available for arbitrary run-time
1720 loading of shared objects; its interface is defined in <dlfcn.h>. The
1721 new header file <link.h> gives access to the internals of the run-time
1722 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1723 application of same name on other systems and it provides information
1724 about dynamically linked binaries.
1726 * The C library now provides the run-time support code for profiling
1727 executables compiled with `-pg'. Programs can control the profiling code
1728 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1729 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1730 the support for this file format was contributed by David Mosberger-Tang.
1732 * The math code has been replaced with a math library based on fdlibm from
1733 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1734 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1735 functions. The math functions now reside in a separate library, so
1736 programs using them will need to use `-lm' their linking commands.
1738 * John C. Bowman contributed optimized ix87 assembler inline functions.
1740 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1741 mechanism similar to that found in Solaris 2. This is now used for the
1742 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1743 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1744 file controls what services are used for each individual database. This
1745 works by loading shared libraries with names specified in `nsswitch.conf',
1746 so service modules can be changed or added at any time without even
1747 relinking any program. Currently there are the file, db, and NIS based
1748 NSS services available.
1750 * The new functions `strtoq' and `strtouq' parse integer values from
1751 strings, like `strtol' and `strtoul', but they return `long long int' and
1752 `unsigned long long int' values, respectively (64-bit quantities).
1754 * The new functions `strtof' and `strtold' parse floating-point values from
1755 strings, like `strtod', but they return `float' and `long double' values,
1756 respectively (on some machines `double' and `long double' are the same).
1758 * Ulrich Drepper has contributed new implementations of the floating-point
1759 printing and reading code used in the `printf' family of functions and
1760 `strtod', `strtof', and `strtold'. These new functions are perfectly
1761 accurate, and much faster than the old ones.
1763 * The implementation of the POSIX locale model was completely rewritten by
1764 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1765 to compile the POSIX locale definition.
1767 * The former dummy implementations of the strcoll and strxfrm function are
1768 now replaced by fully functional code contributed by Ulrich Drepper. The
1769 collation information comes from the POSIX locale definitions.
1771 * The new header <langinfo.h> defines an interface for accessing
1772 various locale-dependent data (using the locale chosen with `setlocale').
1774 * Ulrich Drepper has contributed a new suite of functions for operation on
1775 wide-character and multibyte-character strings, in <wchar.h>;
1776 and classification and case conversion of wide characters, in <wctype.h>.
1777 These new functions are conforming to the ISO C, Amendement 1 specification.
1779 * There is now a second implementation of the standard I/O library available.
1780 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1781 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1783 * You can now use positional parameter specifications in format strings
1784 for the `printf' and `scanf' families of functions. For example,
1785 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1786 ``Number 6, Mr Jones''. This is mainly useful when providing different
1787 format strings for different languages, whose grammars may dictate
1788 different orderings of the values being printed. To support this
1789 feature, the interface for `register_printf_handler' has changed; see
1790 the header file <printf.h> for details.
1792 * The `printf' and `scanf' families of functions now understand a new
1793 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1794 to group numbers as indicated by the locale; for `scanf' and friends, this
1795 says to accept as valid only a number with all the proper grouping
1796 separators in the right places. In the default "C" locale, numbers are
1797 not grouped; but locales for specific countries will define the usual
1798 conventions (i.e. separate thousands with `,' in the US locale).
1800 * The pgrp functions have been regularized, slightly incompatibly but much
1801 less confusingly. The core functions are now `getpgid' and `setpgid',
1802 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1803 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1804 provided for compatibility. There is no longer an incompatible `getpgrp'
1805 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1807 * The new header file <fts.h> and suite of functions simplify programs that
1808 operate on directory trees. This code comes from 4.4 BSD.
1810 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1811 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1812 NSS scheme used in glibc.
1814 * There is a new malloc debugging hook `__memalign_hook'.
1816 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1817 `unsigned int' in <sys/types.h>. These are for compatibility only and
1818 their use is discouraged.
1820 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1821 done differently, so that it works even without GNU ld.
1823 * New function `euidaccess' checks allowed access to a file like `access',
1824 but using the effective IDs instead of the real IDs.
1826 * The time zone data files have been updated for the latest and greatest
1827 local time conventions of the countries of the world.
1829 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1832 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1833 for formatting floating-point numbers. They are provided only for
1834 compatibility; new programs should use `sprintf' instead. There are
1835 also equivalent function for the `long double' floating-point type and
1836 all functions also exist in a reentrant form.
1838 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1839 functions for maintaining the login-record files (primarily of use to
1840 system programs such as `login'), and convenient functions for
1841 allocating and initializing a pseudo-terminal (pty) device.
1843 * Ulrich Drepper has contributed new support for System V style
1844 shared memory and IPC on systems that support it.
1846 * Ulrich Drepper has contributed several miscellaneous new functions found
1847 in System V: The `hsearch' family of functions provide an effective
1848 implementation of hash tables; `a64l' and `l64a' provide a very simple
1849 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1852 * Ulrich Drepper has contributed new reentrant counterparts for the
1853 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1855 * Ulrich Drepper has contributed new, highly-optimized versions of several
1856 string functions for the i486/Pentium family of processors.
1858 * Ulrich Drepper has updated the Linux-specific code, based largely
1859 on work done in Hongjiu Lu's version of GNU libc for Linux.
1860 The GNU library now supports Linux versions 2.0.10 and later,
1861 using the ELF object file format (i[3456]86-*-linux).
1863 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1865 * David Mosberger-Tang and Richard Henderson have ported the C library
1866 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1867 dynamic linking support for ELF/Alpha.
1869 * Richard Henderson contributed several Alpha optimized assembler function
1870 for arithmetic and string handling.
1872 * Ulrich Drepper has contributed a new set of message catalog functions to
1873 support multiple languages using the <libintl.h> interface, for use with
1874 his new package GNU gettext. Translation volunteers have contributed
1875 catalogs of the library's messages in Spanish, German, and Korean.
1877 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1878 program and the `catgets' function for reading the catalog files it
1879 creates. (The <libintl.h> interface is preferred; we include the
1880 <nl_types.h> interface using `catgets' only for source compatibility with
1881 programs already written to use it.)
1883 * New header file <values.h> gives SVID-compatible names for <limits.h>
1886 * Various new macros, declarations, and small header files for compatibility
1889 * New function `group_member' is a convenient way to check if a process has
1890 a given effective group ID.
1892 * When using GCC 2.7 and later, the socket functions are now declared in a
1893 special way so that passing an argument of type `struct sockaddr_in *',
1894 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1895 `struct sockaddr *' type, does not generate a type-clash warning.
1897 * New function `error' declared in header file <error.h> is a convenient
1898 function for printing error messages and optionally exiting; this is the
1899 canonical function used in GNU programs. The new functions `err', `warn',
1900 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1901 doing the same thing.
1903 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1904 POSIX.2 `glob' function to do ~ and {...} expansion.
1906 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1907 `clearenv' which is used in POSIX.9 is also available.
1909 * New function `getsid' returns session ID number on systems that support it.
1911 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1912 files <db.h> and <mpool.h> provide a rich set of functions for several
1913 types of simple databases stored in memory and in files, and <ndbm.h> is
1914 an old `ndbm'-compatible interface using the `db' functions. Link with
1915 `-ldb' to get these functions.
1917 * New macro `strdupa' copies a string like `strdup', but uses local stack
1918 space from `alloca' instead of dynamic heap space from `malloc'.
1920 * New function `strnlen' is like `strlen' but searches only a given maximum
1921 number of characters for the null terminator. `stpncpy', `strndup' and
1922 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1925 * New function `statfs' in header <sys/statfs.h>.
1927 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1928 provide convenient functions for operating on blocks of null-terminated
1931 * A new suite of functions in <utmp.h> handle all the details of reading
1932 and writing the utmp file.
1934 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1937 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1938 completely POSIX compliant and also implemented the extended functionality
1939 to handle alternate digit representation and alternate era date formats.
1941 * Ulrich Drepper provided an implementation of the `strptime' function
1942 defined in XPG4.2 which transforms a string into a `struct tm' value.
1944 * Paul Eggert provided the tzselect shell script as part of the timezone
1945 code. The shell script makes it easy to select the correct timezone
1948 * The implementation of the malloc family of functions is completely replaced
1949 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1950 The implementation uses the mmap function (if available) and it is
1951 optimized for the use in multi threaded programs.
1953 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1954 functions. This new functionality is usable by specifying a special
1955 salt string and it is compatible with implementation on *BSD systems.
1957 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1958 `getsubopt' to handle second level command line options, `bsd_signal'
1959 to access BSD style `signal' functionality, the obsolete `regexp' style
1962 * the `lchown' function is available on system which support this
1965 * The implementation of the shadow password handling function was contributed
1968 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1970 * POSIX.1g support was added. The <sys/select.h> header is available,
1971 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1972 implementation of `getaddrinfo'.
1976 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1978 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1979 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1981 * The new function `daemon' from 4.4 BSD is useful for server programs that
1982 want to put themselves in the background.
1984 * Joel Sherrill has contributed support for several standalone boards that
1985 run without an operating system.
1987 * `printf', `scanf' and friends now accept a `q' type modifier for long
1988 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1990 * All of the code taken from BSD (notably most of the math and networking
1991 routines) has been updated from the BSD 4.4-Lite release.
1993 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1995 * The new functions `getdomainname' and `setdomainname' fetch or change the
1996 YP/NIS domain name. These are system calls which exist on systems which
1999 * The time zone data files have been updated for the latest international
2002 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
2003 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
2007 * The C library now includes support for Sun RPC, from Sun's free
2008 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
2009 are included. (There is still no support for YP.)
2011 * Tom Quinn has contributed a port of the C library to SGI machines running
2012 Irix 4 (mips-sgi-irix4).
2014 * The new `lockf' function is a simplified interface to the locking
2015 facilities of `fcntl', included for compatibility.
2017 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2019 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2021 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2024 * The error message printed by `assert' for a failed assertion now includes
2025 the name of the program (if using GNU ld) and the name of the calling
2026 function (with versions of GCC that support this).
2028 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2030 * The library now includes the <sys/mman.h> header file and memory
2031 management functions `mmap', `munmap', `mprotect', `msync', and
2032 `madvise', on systems that support those facilities.
2034 * The interface for `mcheck' has changed slightly: the function called to
2035 abort the program when an allocation inconsistency is detected now takes
2036 an argument that indicates the type of failure. The new function
2037 `mprobe' lets you request a consistency check for a particular block at
2038 any time (checks are normally done only when you call `free' or `realloc'
2041 * It is now possible to easily cross-compile the C library, building on one
2042 system a library to run on another machine and/or operating system. All
2043 you need to do is set the variable `HOST_CC' in `configparms' to the
2044 native compiler for programs to run on the machine you are building on (a
2045 few generator programs are used on Unix systems); set `CC' to the
2048 * The new function `fexecve' (only implemented on the GNU system) executes
2049 a program file given a file descriptor already open on the file.
2053 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2054 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2056 * You can set the variable `libprefix' in `configparms' to specify a prefix
2057 to be prepended to installed library files; this makes it easy to install
2058 the GNU C library to be linked as `-lgnuc' or whatever.
2060 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2061 copies a limited number of characters from a string, and returns the
2062 address of the last character written.
2064 * You no longer need to check for whether the installed `stddef.h' is
2065 compatible with the GNU C library. configure now checks for you.
2067 * You can now define a per-stream `fileno' function to convert the
2068 stream's cookie into an integral file descriptor.
2070 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2071 allocates zero bytes of storage, and returns a unique pointer which
2072 you can pass to `realloc' or `free'. The behavior is undefined if
2073 you dereference this pointer.
2075 * The C library now runs on Sony NEWS m68k machines running either
2076 NewsOS 3 or NewsOS 4.
2078 * The new `syscall' function is a system-dependent primitive function
2079 for invoking system calls. It has the canonical behavior on Unix
2080 systems, including unreliable return values for some calls (such as
2081 `pipe', `fork' and `getppid').
2083 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2084 to `EAGAIN', which is the preferred name. On systems whose kernels
2085 use two distinct codes, the C library now translates EWOULDBLOCK to
2086 EAGAIN in every system call function.
2090 * The GNU C Library Reference Manual is now distributed with the library.
2091 `make dvi' will produce a DVI file of the printed manual.
2092 `make info' will produce Info files that you can read on line using C-h i
2093 in Emacs or the `info' program.
2094 Please send comments on the manual to bug-glibc-manual@gnu.org.
2096 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2098 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2100 * Jason Merrill has contributed a port to the Sequent Symmetry running
2101 Dynix version 3 (i386-sequent-dynix).
2103 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2104 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2106 * New function `memory_warnings' lets you arrange to get warnings when
2107 malloc is running out of memory to allocate, like Emacs gives you.
2109 * The C library now contains the relocating allocator used in Emacs 19 for
2110 its editing buffers. This allocator (ralloc) minimizes allocation
2111 overhead and fragmentation by moving allocated regions around whenever it
2112 needs to. You always refer to a ralloc'd region with a "handle" (a
2113 pointer to a pointer--an object of type `void **').
2115 * There is a new `printf' format: `%m' gives you the string corresponding
2116 to the error code in `errno'.
2118 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2119 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2120 pass, the `a' modifier says to fill in a `char **' you pass with a
2123 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2124 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2125 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2127 * `mkstemp' is a traditional Unix function to atomically create and open a
2128 uniquely-named temporary file.
2132 * The standard location for the file that says what the local timezone is
2133 has changed again. It is now `/usr/local/etc/localtime' (or more
2134 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2136 * The distribution no longer contains any files with names longer than 14
2139 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2140 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2142 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2146 * The configuration process has changed quite a bit. The `configure'
2147 script is now used just like the configuration scripts for other GNU
2148 packages. The `sysdeps' directory hierarchy is much rearranged.
2149 The file `INSTALL' explains the new scheme in detail.
2151 * The header files no longer need to be processed into ANSI C and
2152 traditional C versions. There is just one set of files to install, and
2153 it will work with ANSI or old C compilers (including `gcc -traditional').
2155 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2156 MIPS DECStation running Ultrix 4.
2158 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2159 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2160 made itself into a shared library.
2162 * Yet further improved support for the i386, running 4.3 BSD-like systems
2163 (such as Mach 3 with the Unix single-server), or System V.
2165 * New function `strncasecmp' to do case-insensitive string comparison
2166 with limited length.
2168 * New function `strsep' is a reentrant alternative to `strtok'.
2170 * New functions `scandir' and `alphasort' for searching directories.
2172 * New function `setenv' is a better interface to `putenv'.
2174 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2175 function for traversing a directory tree.
2177 * The GNU obstack package is now also part of the C library.
2178 The new function `open_obstack_stream' creates a stdio stream that
2179 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2180 formatted output directly to an obstack.
2182 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2183 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2185 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2187 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2188 things to your strings.
2190 * There are some new test programs: test-fseek, testmb, and testrand.
2192 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2193 These ports are not finished, but are a good starting place for really
2194 supporting those systems.
2196 * `/etc/localtime' is now the standard location for the file that says what
2197 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2198 This follows the general principle that `/etc' is the place for all local
2199 configuration files.
2201 * The C library header files now use `extern "C"' when used by the C++
2202 compiler, so the C library should now work with C++ code.
2204 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2205 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2208 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2209 function which uses the `merge sort' algorithm, and is said to be
2210 significantly faster than the old GNU `qsort' function. Merge sort is
2211 now the standard `qsort' function. The new algorithm can require a lot
2212 of temporary storage; so, the old sorting function is called when the
2213 required storage is not available.
2215 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2216 provides the Unix `crypt' function, plus some other entry points.
2218 * The code and header files taken from 4.4 BSD have been updated with the
2219 latest files released from Berkeley.
2221 ----------------------------------------------------------------------
2222 Copyright information:
2224 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2226 Permission is granted to anyone to make or distribute verbatim copies
2227 of this document as received, in any medium, provided that the
2228 copyright notice and this permission notice are preserved,
2229 thus giving the recipient permission to redistribute in turn.
2231 Permission is granted to distribute modified versions
2232 of this document, or of portions of it,
2233 under the above conditions, provided also that they
2234 carry prominent notices stating who last changed them.
2237 version-control: never
projects / thirdparty / glibc.git / blob