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 11561, 12723, 13550, 13951, 14142, 14200, 14317, 14327, 14496, 14920,
13 14964, 14981, 14982, 14985, 14994, 14996, 15003, 15006, 15020, 15023,
14 15036, 15054, 15055, 15062, 15078, 15160, 15232, 15234, 15283.
16 * Add support for calling C++11 thread_local object destructors on thread
17 and program exit. This needs compiler support for offloading C++11
18 destructor calls to glibc.
20 * Improved worst case performance of libm functions with double inputs and
23 * Support for priority inherited mutexes in pthread condition variables on
24 non-x86 architectures.
26 * Added a benchmark framework to track performance of functions in glibc.
31 * The following bugs are resolved with this release:
33 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
34 9685, 9914, 10014, 10038, 10114, 10631, 10873, 11438, 11607, 11638, 11741,
35 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679, 13696,
36 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950, 13952,
37 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157, 14166,
38 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298, 14303,
39 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376, 14417,
40 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518, 14519,
41 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568, 14576,
42 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645, 14648,
43 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719, 14743,
44 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803, 14805,
45 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833, 14835,
46 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872, 14879,
47 14889, 14893, 14898, 14914.
49 * Optimization of memcpy for MIPS.
51 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
52 EMFILE has been fixed (Bugzilla #14889).
54 * The add-on ports collection is now distributed in the "ports" subdirectory
55 of the main GNU C Library distribution, rather than separately.
57 * Port to ARM AArch64 contributed by Linaro.
59 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
60 Optimized versions of memcpy, memset, and memcmp added for System z10 and
62 Implemented by Andreas Krebbel.
64 * The new function secure_getenv allows secure access to the environment,
65 returning NULL if running in a SUID/SGID process. This function replaces
66 the internal function __secure_getenv.
68 * SystemTap static probes have been added into the dynamic linker.
69 Implemented by Gary Benson.
71 * Optimizations of string functions strstr, strcasestr and memmem.
72 Implemented by Maxim Kuvyrkov.
74 * The minimum Linux kernel version that this version of the GNU C Library
75 can be used with is 2.6.16.
77 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
78 powerpc POWER7. Implemented by Will Schmidt.
80 * New configure option --disable-nscd builds the C library such that it
81 never attempts to contact the Name Service Caching Daemon (nscd).
82 New configure option --disable-build-nscd avoids building nscd itself;
83 this is the default if --disable-nscd is used.
85 * Improved support for cross-compilation, including cross-testing and
86 bootstrap builds without a previously built glibc.
88 * Several testsuite tests are now able to test multiple IFUNC variants of an
89 interface, rather than just testing the one that would be chooen by
92 * New configure options --with-bugurl and --with-pkgversion, for
93 distributors to use to embed their bug-reporting and package version
94 information in --help and --version output.
96 * The ttyname and ttyname_r functions on Linux now fall back to searching for
97 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
98 allows creation of chroots without the procfs mounted on /proc.
100 * The `crypt' function now fails if passed salt bytes that violate the
101 specification for those values. On Linux, the `crypt' function will
102 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
103 enabled, and fail on encrypted strings using the MD5 or DES algorithm
104 when the mode is enabled.
106 * The `clock_*' suite of functions (declared in <time.h>) is now available
107 directly in the main C library. Previously it was necessary to link with
108 -lrt to use these functions. This change has the effect that a
109 single-threaded program that uses a function such as `clock_gettime' (and
110 is not linked with -lrt) will no longer implicitly load the pthreads
111 library at runtime and so will not suffer the overheads associated with
112 multi-thread support in other code such as the C++ runtime library.
114 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
119 * The following bugs are resolved with this release:
121 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
122 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
123 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
124 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
125 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
126 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
127 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
128 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
129 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
130 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
131 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658,
132 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739,
133 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806,
134 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871,
135 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895,
136 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
137 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
138 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973,
139 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040,
140 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075,
141 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134,
142 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273, 14277,
145 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
146 configuring glibc with:
147 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
148 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
149 Implemented by H.J. Lu.
153 + define static_assert
155 + do not declare gets
157 + declare at_quick_exit and quick_exit also for ISO C11
159 + aligned_alloc. NB: The code is deliberately allows the size parameter
160 to not be a multiple of the alignment. This is a moronic requirement
161 in the standard but it is only a requirement on the caller, not the
166 + uchar.h support added
168 + CMPLX, CMPLXF, CMPLXL added
170 Implemented by Ulrich Drepper.
172 * Support for the IA-64 has been moved to ports.
174 * Remove support for anything but ELF binary format
176 * Checking versions of poll, ppoll added.
177 Implemented by Ulrich Drepper.
179 * More generic and 64-bit performance optimizations to math functions.
180 Implemented by Ulrich Drepper.
182 * New configure option --enable-obsolete-rpc makes the deprecated RPC
183 headers and functions available at compile time as they were before
184 version 2.14. This option will be removed at some time in the future
185 after the TI-RPC library becomes fully sufficient for the needs of
186 existing applications.
188 * Compatibility code for Linux kernel versions before 2.4 has been removed.
189 Note that glibc is not expected to work with any Linux kernel version
192 * New header <sys/auxv.h> and function getauxval allowing easy access to
193 the AT_* key-value pairs passed from the Linux kernel. The header also
194 defines the HWCAP_* bits associated with the AT_HWCAP key.
196 * New locales: mag_IN
198 * New configure option --enable-systemtap builds SystemTap static probes
199 into libc for setjmp and longjmp and into libpthread for various operations.
200 So far the setjmp/longjmp probes and some of the libpthread probes are
201 provided only for i*86 and x86_64.
202 Implemented by Roland McGrath and Rayson Ho.
204 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
206 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
209 * More optimized functions for SPARC. Implemented by David S. Miller.
211 * Improved support for cross-compilation, especially bootstrap builds
212 without a previously built glibc.
214 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
215 Chris Metcalf from Tilera.
217 * Support for the old ARM ABI has been removed from ports. Only the EABI is
218 now supported for ARM processors.
220 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
221 as the name of the dynamic linker, to distinguish it from the
222 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
224 * Support for CRIS has been removed from ports.
226 * A new class of installed header has been documented for low-level
227 platform-specific functionality. PowerPC added the first instance with a
228 function to provide time base register access. Contributed by Tulio
229 Magno Quites Machado Filho.
231 * ix86 configurations now install header files that are consistent with
232 what x86-64 configurations install. These same header files can be used
233 for -m32, -m64, or -mx32 builds.
234 Contributed by H.J. Lu.
236 * Math library bug fixes. A thorough audit of all open math library bugs was
237 conducted by Joseph Myers. Significant progress was made on many math
238 library bugs resulting in more accurate exceptions and function results.
239 Many thanks to all those that contributed including Andreas Jaeger for his
240 patch review and work on the x87 trigonometric instruction issues.
242 * Timezone data is no longer installed. Timezone-related binaries and scripts
243 will continue to be installed. Users should obtain their timezone data from
244 their distribution provider or from the tzdata package at
245 <ftp://munnari.oz.au/pub/>.
249 * The following bugs are resolved with this release:
251 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
252 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
253 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
254 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
255 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
256 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
257 13484, 13506, 13515, 13523, 13524, 13538, 13540
259 * New program pldd to list loaded object of a process
260 Implemented by Ulrich Drepper.
262 * Add nss_db support back to glibc. No more dependency on Berkeley db
263 and support for initgroups lookups.
264 Implemented by Ulrich Drepper.
266 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
267 Contributed by HJ Lu.
269 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
270 Contributed by HJ Lu.
272 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
273 on x86-32 and x86-64.
274 Contributed by Liubov Dmitrieva.
276 * Optimized strchr and strrchr for SSE on x86-32.
277 Contributed by Liubov Dmitrieva.
279 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
280 for x86-64 and x86-32.
281 Contributed by Liubov Dmitrieva.
283 * New interfaces: scandirat, scandirat64
284 Implemented by Ulrich Drepper.
286 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
287 Implemented by Ulrich Drepper.
289 * nscd now also caches the netgroup database.
290 Implemented by Ulrich Drepper.
292 * Integrate libm with gcc's -ffinite-math-only option.
293 Implemented by Ulrich Drepper.
295 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
296 to math functions. Implemented by Ulrich Drepper.
298 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
299 Implemented by Ulrich Drepper.
301 * New Linux interfaces: process_vm_readv, process_vm_writev
303 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
304 Implemented by Ulrich Drepper.
306 * Optimized nearbyint and strcasecmp for PPC.
307 Implemented by Adhemerval Zanella.
309 * New locales: bho_IN, unm_US, es_CU, ta_LK
313 * The following bugs are resolved with this release:
315 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
316 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
317 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
318 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
319 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
320 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
321 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
322 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
323 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
324 12795, 12811, 12813, 12814, 12841
326 * The RPC implementation in libc is obsoleted. Old programs keep working
327 but new programs cannot be linked with the routines in libc anymore.
328 Programs in need of RPC functionality must be linked against TI-RPC.
329 The TI-RPC implementation is IPv6 enabled and there are other benefits.
331 Visible changes of this change include (obviously) the inability to link
332 programs using RPC functions without referencing the TI-RPC library and the
333 removal of the RPC headers from the glibc headers.
334 Implemented by Ulrich Drepper.
336 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
337 syncfs, setns, sendmmsg
339 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
340 yue_HK, lij_IT, mhr_RU
342 * New encodings: CP770, CP771, CP772, CP773, CP774
344 * New program sotruss to trace calls through PLTs
345 Implemented by Ulrich Drepper.
347 * The malloc hook implementation is marked deprecated and will be removed
348 from the default implementation in the next version. The design never
349 worked ever since the introduction of threads. Even programs which do
350 not create threads themselves can use multiple threads created internally.
354 * The following bugs are resolved with this release:
356 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
357 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
358 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
359 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
362 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
364 * POWER7 optimizations: memset, memcmp, strncmp
366 * New optimized string functions for x86-64: strnlen (SSE2),
367 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
368 Implemented by Ulrich Drepper.
372 * The following bugs are resolved with this release:
374 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
375 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
376 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
377 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
378 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
379 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
380 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
381 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
383 * New interfaces: pthread_getname_np, pthread_setname_np
385 * New Linux interface: recvmmsg
387 * STT_GNU_IFUNC implemented for Sparc by David Miller.
389 * The dynamic linker now recognizes supported ABI versions from the
390 EI_ABIVERSION field in the ELF header.
391 Implemented by Ulrich Drepper.
393 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
394 will not be used to fill in password fields in the passwd.byname replies.
395 Instead it is used to synthesize the shadow.byname table, should it be
396 missing. This is a useful mode in some installations involving Solaris.
397 Implemented by Ulrich Drepper.
399 * New locales: kok_IN, sq_MK, cv_RU
403 * The following bugs are resolved with this release:
405 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
406 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
407 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
408 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
409 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
410 10789, 10817, 10823, 10840, 10847
412 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
414 Implemented by Ulrich Drepper.
416 * Checking version of longjmp added that fails if an uninitialized stack
417 frame would be created. Implemented by Ulrich Drepper.
419 * STT_GNU_IFUNC is now supported in static executables.
420 Implemented by H.J. Lu.
422 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
424 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
425 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
426 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
427 Contributed by H.J. Lu.
429 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
430 Implemented by Ulrich Drepper.
432 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
434 Contributed by H.J. Lu.
436 * Support for fma instruction in AVX on x86-64.
437 Implemented by H.J. Lu and Ulrich Drepper.
439 * AVX support in x86-64 auditing support in ld.so.
440 Implemented by H.J. Lu.
442 * STB_GNU_UNIQUE support added.
443 Implemented by Ulrich Drepper.
445 * Implement second fallback mode for optimized DNS lookup for even more
446 broken environments. If two requests from the same port are not
447 handled correctly close the socket and open a new one before sending
448 the second request. The 'single-request-reopen' option in /etc/resolv.conf
449 can be used to select this mode right away, instead of rediscovering the
450 necessity is every process again.
451 Implemented by Ulrich Drepper.
453 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
454 Implemented by Adam Tkac.
456 * Optimized iconv conversions for S390x.
457 Implemented by Andreas Krebbel.
459 * Using condvars with PI mutexes is now more efficient due to kernel
460 support for requeueing to PI futexes. NPTL support added for x86-64.
461 Implemented by Ulrich Drepper.
463 * New locales: ps_AF, my_MM
467 * The following bugs are resolved with this release:
469 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
470 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
471 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
472 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
473 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
475 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
476 Implemented by Ulrich Drepper.
478 * New Linux interfaces: accept4, fallocate, fallocate64.
479 Implemented by Ulrich Drepper.
481 * Correct declarations of string function when used in C++ code. This
482 could lead to compile errors for invalid C++ code.
484 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
487 * New POSIX 2008 interface: psiginfo
488 Implemented by Ulrich Drepper.
490 * New ISO C++1x interfaces: quick_exit, at_quick_exit
491 Implemented by Ulrich Drepper.
493 * Support for selecting between multiple function definitions at runtime
494 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
496 * The libcrypt library can now use the hash function implementations in
497 NSS. Implemented by Ulrich Drepper.
499 * The malloc implementation can be compiled to be less memory efficient
500 but higher performing in multi-threaded programs.
501 Implemented by Ulrich Drepper.
503 * New locales: nan_TW@latin, ks_IN
505 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
506 Implemented by Ulrich Drepper.
508 * Extended printf hook support. It is possible to use user-defined types
509 and extend existing format specifiers.
510 Implemented by Ulrich Drepper.
512 * Handling for group shadow files has been added.
513 Implemented by Ulrich Drepper.
515 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
516 servers (the case, e.g., for some people using the built-in DNS
517 server in ADSL modems/routers). There is a once-per-process timeout
518 in case of a broken server. To avoid it, users can run nscd or put
519 'options single-request' in /etc/resolv.conf.
520 Implemented by Ulrich Drepper.
524 * The following bugs are resolved with this release:
526 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
527 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
528 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
529 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
530 6968, 6974, 6980, 6995, 7008, 7009, 7029
532 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
533 up at the same time. Implemented by Ulrich Drepper.
535 * TLS descriptors for LD and GD on x86 and x86-64.
536 Implemented by Alexandre Oliva.
538 * getaddrinfo now handles DCCP and UDPlite.
539 Implemented by Ulrich Drepper.
541 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
542 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
543 Implemented by Ulrich Drepper.
545 * New implementation of memmem, strstr, and strcasestr which is O(n).
546 Implemented by Eric Blake.
548 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
550 * Implement "e" option for popen to open file descriptor with the
551 close-on-exec flag set. Implemented by Ulrich Drepper.
553 * Implement "b" mode for fmemopen. In this mode writes writes don't
554 implicitly add a NUL byte and seeks from the end of the buffer really
555 use the buffer end, not the string length as the basis.
556 Implemented by Ulrich Drepper.
558 * Many functions, exported and internal, now atomically set the close-on-exec
559 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
561 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
563 Implemented by Pravin Satpute.
565 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
569 * The following bugs are resolved with this release:
571 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
572 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
573 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
574 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
575 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
576 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
577 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
579 * New locales: bo_CN, bo_IN, shs_CA.
581 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
583 * Sorting rules for some Indian languages (Devanagari and Gujarati).
584 Implemented by Pravin Satpute.
586 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
588 * nscd caches now all timeouts for DNS entries
589 Implemented by Ulrich Drepper.
591 * nscd is more efficient and wakes up less often.
592 Implemented by Ulrich Drepper.
594 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
595 vdprintf, and obstack_vprintf.
596 Implemented by Jakub Jelinek.
598 * Faster memset for x86-64.
599 Implemented by Harsha Jagasia and H.J. Lu.
601 * Faster memcpy on x86.
602 Implemented by Ulrich Drepper.
604 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
605 Implemented by Ulrich Drepper.
607 * Faster sqrt and sqrtf implemention for some PPC variants.
608 Implemented by Steven Munroe.
612 * The following bugs are resolved with this release:
614 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
615 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
616 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
617 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
618 5071, 5103, 5104, 5112, 5113, 5184, 5186
620 * More checking functions: fread, fread_unlocked, open*, mq_open.
621 Implemented by Jakub Jelinek and Ulrich Drepper.
623 * Extend fortification to C++. Implemented by Jakub Jelinek.
625 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
626 by not recognizing 'a' as a modifier when those specs are requested.
627 Implemented by Jakub Jelinek.
629 * PPC optimizations to math and string functions.
630 Implemented by Steven Munroe.
632 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
633 options to be passed. Implemented by Ulrich Drepper.
635 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
637 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
638 Implemented by Ulrich Drepper.
640 * Handle private futexes in the NPTL implementation.
641 Implemented by Jakub Jelinek and Ulrich Drepper.
643 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
644 Implemented by Roland McGrath and Ulrich Drepper.
646 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
648 * SHA-256 and SHA-512 based password encryption.
649 Implemented by Ulrich Drepper.
651 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
652 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
655 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
656 Implemented by Ulrich Drepper.
660 * The following bugs are resolved with this release:
662 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
663 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
664 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
665 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
666 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
667 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
668 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
671 * New Linux interfaces: epoll_pwait, sched_getcpu.
673 * New generic interfaces: strerror_l.
675 * nscd can now cache the services database. Implemented by Ulrich Drepper.
679 * The following bugs are resolved with this release:
681 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
682 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
683 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
684 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
685 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
686 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
687 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
688 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
689 3225, 3251, 3252, 3253, 3273
691 * For Linux, the sorting of addresses returned by getaddrinfo now also
692 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
693 Implemented by Ulrich Drepper.
695 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
696 Implemented by Ulrich Drepper.
698 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
700 * New iconv module for MIK. Contributed by Alexander Shopov.
702 * For sites with broken group and/or passwd database, the auto-propagate
703 option of nscd can prevent creating ID lookup entries from the results
704 of a name lookup and vice versa. This usually is no problem but some
705 site might have problems with the default behavior.
706 Implemented by Ulrich Drepper.
708 * Iterating over entire database in NIS can be slow. With the
709 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
710 to trade time for memory. The entire database will be read at once.
711 Implemented by Ulrich Drepper.
713 * The interfaces introduced in RFC 3542 have been implemented by
716 * Support for the new ELF hash table format was added by Ulrich Drepper.
718 * Support for priority inheritance mutexes added by Jakub Jelinek and
721 * Support for priority protected mutexes added by Jakub Jelinek.
723 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
724 or_IN, csb_PL, fy_NL, sr_ME.
728 * More overflow detection functions.
730 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
731 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
733 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
734 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
735 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
736 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
737 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
738 by Masahide Washizawa.
740 * It is now possible to install audit libraries for the dynamic linker using
741 LD_AUDIT. Implemented by Ulrich Drepper.
743 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
744 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
745 For a libc and libpthread that works well on Linux 2.4 kernels, we
746 recommend using the stable 2.3 branch.
748 * The new function open_wmemstream acts like open_memstream,
749 but uses a wchar_t wide character buffer.
751 * The new function ppoll is an improved version of poll, similar to pselect.
753 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
754 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
755 renameat, unlinkat, linkat, symlinkat, readlinkat.
757 * New Linux kernel system calls: unshare,
758 inotify_init, inotify_add_watch, inotify_rm_watch.
760 * The euidaccess function is now also known by the alias eaccess,
761 for compatibility with some other systems.
763 * Timezone data updated to 2006b version.
767 * The following bugs are resolved with this release:
769 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
770 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
771 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
772 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
773 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
774 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
776 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
778 * As of this release, GCC 4 can be used to compile the C Library.
780 * Timezone data updated to 2005m version.
784 * The following bugs are resolved with this release:
786 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
787 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
788 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
789 777, 787, 821, 822, 823, 825
791 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
795 * Support for RFC 3678. Real implementations exist only for Linux so far.
796 Implemented by Ulrich Drepper.
798 * nscd can now cache entries persistently. Expiring entries are reloaded.
799 For speedups the cache can be shared in memory with client processes.
800 Implemented by Ulrich Drepper.
802 * nscd can now perform SELinux checks.
803 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
805 * getaddrinfo queries are now cached. Canonical name lookup is performed
807 Implemented by Ulrich Drepper.
809 * The nothrow function attribute is used when headers are used by gcc when
810 compiling C code. This can avoid significant amounts of exception
813 * The malloc functions perform more error checking and are stricter when
814 it comes to reacting on errors. The default action is to terminate
815 the process after showing an error message. Implemented by Ulrich Drepper.
817 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
818 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
820 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
821 namespaces using the new function dlmopen(). This feature is of course,
822 like most other dynamic loading functionality, not available in statically
823 linked applications. Implemented by Ulrich Drepper.
825 * Low-overhead boundary checking variants of string and some stdio functions
826 were added. These are to be used in conjunction with a gcc patch by
827 Jakub Jelinek which adds calls to these functions if possible.
828 Implemented by Jakub Jelinek and Ulrich Drepper.
830 * Old code for several operating systems and machine architectures that
831 have not been in working condition in a long time have been removed from
832 the main source tree maintained by the GNU C Library's maintainers.
833 These files are now reside in the separate `ports' source module
834 that is usable as an add-on when building the library.
838 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
839 interrogate the dynamic linker, compatible with the Solaris interface.
841 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
842 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
844 * getifaddrs now uses the netlink interface on Linux to get its information.
845 Implemented by Thorsten Kukuk.
847 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
848 Implemented by Ulrich Drepper.
850 * support for non-executable stacks on x86 has been added. Changes mostly
853 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
856 * getaddrinfo now performs destination address selection according to
861 * Thread-safe interfaces for many functions that access locale data
862 were added in version 2.3, but these features were omitted from NEWS.
863 Many functions have variants with an `_l' suffix that take a `locale_t'
864 object as a parameter rather than consulting the current locale.
865 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
866 create and maintain `locale_t' objects. Additionally, the new function
867 `uselocale' sets "the current locale" (as used by functions not so
868 parameterized) set for an individual thread. These features were added
869 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
871 * The functions getresuid, getresgid, setresuid, and setresgid, which
872 have long been available on Linux, are now declared in <unistd.h>
873 and are now also available on the Hurd.
875 * ELF thread-local storage support (TLS) now works on x86-64.
877 * The new dynamic string token $LIB is expanded in shared library names.
878 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
880 * Aldy Hernandez contributed complete software floating point support for
881 PowerPC machines with no FPU.
883 * fexecve is implemented on Linux.
885 * The `btowc' function should work at least twice as fast due to
886 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
888 * With approriate thread add-ons cancelable functions are now implemented
889 in libc.so as well. No need to call the function in libpthread. This
890 change allowed to finally disable the incorrect and expensive handling
891 of weak definition in ld.so.
893 * Yet more PLT entries in libc.so have been removed. We finally arrived
894 at the bare minimum. Startup times improved appropriately.
896 * Support for the new Linux/x86 system call interface was added. The
897 AT_SYSINFO auxiliary vector entry is recognized and handled.
901 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
904 * iconv (the program and the interface) now accepts empty names (excluding
905 options like //TRANSLIT) to mean "use charset of current locale".
907 * localedef can now transliterate characters in strings which are not in
908 the provided charmap. The information from the input locale is used.
910 * Prelinking support was added for ELF targets. This requires additional
911 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
913 * Read-only stdio streams now use mmap to speed up operation by eliminating
914 copying and buffer underflows. To use add 'm' to the mode string of
915 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
917 * The malloc functions were completely rewritten by Wolfram Gloger based
918 on Doug Lea's malloc-2.7.0.c.
920 * Isamu Hasegawa contributed a completely new and POSIX-conformant
921 implementation of regex.
923 * Bruno Haible upgraded the iconv and locale implementation to support
926 * Contents of the LC_* and LANG environment variables in the CEN style are
927 not recognized anymore. It never was used. Change by Ulrich Drepper.
929 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
930 thread-local storage (TLS) ABI on some platforms.
931 Changes by Ulrich Drepper. SH support by Kaz Kojima.
933 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
934 EUC-JISX0213, and TSCII.
936 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
937 BSD-compatible interface for getting all network interface addresses.
938 Implementation for IPv4 by Roland McGrath.
940 * Loading of locale data is faster due to the introduction of a locale
941 archive. Implemented by Roland McGrath and Ulrich Drepper.
943 * Startup times are significantly reduced by not using exported functions
944 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
947 * Steven Munroe contributed a port to PowerPC64/Linux.
951 * The Hurd now uses the GNU libio implementation of stdio rather than the
952 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
954 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
955 with the same behavior as the Linux system call of the same name.
959 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
960 128-bit long double format.
962 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
963 IBM1161, and IBM1162 charsets.
965 * Andreas Jaeger contributed a port to x86-64/Linux.
967 * Peter Bruin contributed a port to PowerPC/Hurd.
969 * libc functions using I/O streams now can handle wide-oriented streams
972 * optimizations in the dynamic linker. Binaries created by recent binutils
973 versions start up quicker due to reduced time spent on relocations.
975 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
979 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
980 asinh, atanh, j0 for the 128-bit long double format.
982 * Bruno Haible updated all the code handling Unicode in some form to
985 * Speed of regex for single-byte locales is back to previous levels.
986 Patch by Isamu Hasegawa.
988 * Alpha, SPARC, and IA-64 now also using floating stacks.
990 * Startup time of internationalized applications greatly improved through
991 iconv cache. Use iconvconfig to generate the cache file.
992 Contributed by Ulrich Drepper.
994 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
995 severe performance problems. Patch by David Mosberger.
997 * The Hurd port got a lot more functionality like AIO, various stdio
998 extensions, etc. Mainly done by Roland McGrath.
1000 * mtrace can now lookup symbols in shared libraries.
1004 * Intel's IA-64 math library is largely integrated. It provides fast and
1005 accurate implementatations for most basic and standard math functions
1006 in float, double, and long double format.
1008 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1009 and asin for the 96-bit long double format and asin, log, tan for the
1010 128-bit long double format.
1012 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1013 The basic double functions exist today. Contributed by Abraham Ziv
1014 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1015 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1017 * An asynchronous name lookup library was added. The interface is designed
1018 after POSIX AIO. The proposal was circulated beforehand to get comments.
1019 No negative ones came in. Implemented by Ulrich Drepper.
1021 * Port to S390/64bit contributed by Martin Schwidefsky
1022 <schwidefsky@de.ibm.com>.
1024 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1025 of functions for Linux/IA-64.
1027 * The RPC code is now thread safe. Threads can now use the same service
1028 of different services at the same time. Patch by Eric Norum
1029 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1031 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1032 family of functions for Linux/S390.
1034 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1035 of functions for Linux/x86.
1037 * Port to Linux/CRIS contributed by Axis Communications.
1041 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1042 we can now check for namespace violations and missing declarations. The
1043 result is that almost all headers are now Unix-compliant (as defined in
1044 the upcoming XPG6). The negative side is that some programs might need
1045 corrections, too, if they depend on the incorrect form of the headers in
1046 previous versions which defined too many symbols and included too many
1049 * regex now handles multibyte character sets correctly.
1050 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1052 * iconv (the program) does now conform to the upcoming XPG6 and handles
1053 charmaps. Instead of the charset names the path of charmaps can be
1054 provided and the conversion happens based on this data.
1055 Contributed by Ulrich Drepper.
1057 * The locale program now provides detailed information about the installed
1062 only lists the names of the supported locales
1066 provides details such as country, language, and codeset name.
1067 Contributed by Ulrich Drepper.
1071 * The gencat program now parses the input file according to the charset
1072 selected by the LC_CTYPE category. This is important for stateful
1073 character sets. To make generating catalogs easier there is a way
1074 to overwrite the charset selected by the locale: before the first
1075 message or $ quote line the catalog can contain a line like
1077 $ codeset=ISO-8859-2
1079 to select the charset (ISO-8859-2 in this case).
1081 Implemented by Shinya Hanataka and Ulrich Drepper.
1083 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1084 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1085 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1087 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1088 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1090 * The LANGUAGE environment variable is now ignored unless the locale is
1091 changed from the default "C" locale.
1093 * The usual bug fixes.
1097 * Greg McGary added runtime support for bounds checking using gcc's
1098 new -fbounded-pointers option. ix86 target is complete. PowerPC
1101 * Thorsten Kukuk added secure mode support to nscd.
1103 * The Berkeley db libraries have been removed.
1105 Related, the nss_db module is now in a separate package since it
1106 obviously requires a database library being available.
1108 * Wide character I/O streams implemented by Ulrich Drepper.
1110 * Functions from the extended socket API added by Ulrich Drepper.
1112 * Functions feenableexcept and fedisableexcept to control the
1113 behaviour of individual exceptions have been added by Andreas Jaeger.
1115 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1117 * The resolver code has been updated from bind 8.2.3-T5B which supports
1118 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1121 This change could in some situations effect backward compatibility. Since
1122 now `_res' is a thread-local instead of a global variable, modifying it
1123 in one thread does not have any effect in other threads.
1125 The resolver library was also extended to allow IPv6 as the transport
1126 protocol for the requests. This work was done by Stig Venaas.
1128 * Compatibility code for K&R C compilers has been removed from the
1129 header files. A ISO C compiler is needed to use the library
1130 (conforming to either C89 or C99 standard).
1132 * Complete rewrite of the localedef program to support multibyte character
1133 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1134 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1135 Implemented by Ulrich Drepper.
1137 Bruno Haible significantly improved the generation and use of the data
1138 structures for the wide character tables.
1140 * Plural handling in gettext implemented by Ulrich Drepper.
1142 * The utmp daemon has been removed.
1144 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1146 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1149 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1151 * POSIX barriers implemented by Kaz Kylheku.
1153 * POSIX spawn function family implemented by Ulrich Drepper.
1155 * POSIX spinlocks are now available.
1157 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1159 * the configure option --enable-kernel=X.Y.Z allows to strip out
1160 compatibility for kernel versions before X.Y.Z. This is currently only
1161 implemented for Linux.
1163 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1164 field sin6_scope_id. This means that all programs using IPv6 should be
1165 recompiled. Don't expect binary compatibility with previous glibc
1168 * various conversion modules for IBM character sets contributed by
1171 * IA-64 port by Jes Sorensen and HJ Lu.
1185 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1187 * New xdr functions are added; some rpc functions are now 64bit clean.
1189 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1191 * Fixed known incompatibilities with glibc 2.0.
1193 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1195 * Optimized a number of functions (especially the ELF dynamic loader).
1197 * Update timezone data files.
1199 * lots of charmaps corrections
1201 * some new locale definitions and charmaps
1206 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1207 conform to POSIX member type requirements. Symbol versions have been
1208 adjusted as needed within the library, and for direct use by applications,
1209 but there is potential for problems if third-party libraries use
1210 struct timeval as part of their interface. This does not present
1211 a problem for X and other "essential" system libraries.
1213 * An additional locale model to support C++ Standard Library locale
1214 model and probably more was implemented by Ulrich Drepper.
1216 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1219 * Miles Bader provided the `argp' function family to support hierachical
1220 command line argument parsing, layered on top of getopt.
1222 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1224 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1227 * scanf recognizes the %a and %A format for scanning floating point numbers.
1229 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1230 information and interfaces for the available integer types.
1232 * about 130 new math functions were added to implement the ISO C9x math
1235 * the new header <complex.h> contains definitions of the complex math
1236 functions from ISO C 9X.
1238 * the new header <tgmath.h> defines generic macros to use complex or
1239 real valued functions.
1241 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1243 * Andreas Jaeger provided a test suite for the math library.
1245 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1247 * Ulrich Drepper added character set conversion functions (iconv).
1249 * Optimized string functions have been added.
1251 * The localedata addon is now part of glibc.
1253 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1255 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1256 daemon for NSS (nscd).
1258 Missing a better place here are some numbers on improvements. Under
1259 Linux 2.1.125 un-tar-ing the kernel sources takes
1263 using local files 12.19s 6.88s 22.91s
1265 using NIS 13.92s 8.91s 26.34s
1267 using NIS & nscd 10.37s 7.34s 25.30s
1269 using NIS+ 27.57s 30.37s 640.46s
1271 using NIS+ & nscd 10.25s 7.83s 26.51s
1273 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1275 Keep in mind that non-namelookup related operations dominate above times.
1276 It was just a common complain that using NIS+ unpacking the kernel is
1279 [1] The old nscd implementation is not available anymore since it was
1280 distributed with glibc up to version 2.0.98 and thus is now replaced.
1282 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1284 * Mark Kettenis provided a Hesiod NSS module.
1286 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1287 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1289 * rcmd can now handle netgroups (Dick Streefland).
1291 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1294 * Support for the IPv6 protocol has been added to the socket API, as per the
1295 latest draft standards.
1297 * Support for Linux 2.2 has been added.
1299 * Interface changes relative to the latest 2.0.x release:
1300 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1301 addseverity NEW: Unix98
1302 alphasort64 NEW: LFS
1303 argp_err_exit_status NEW: argp, GNU ext
1304 argp_error NEW: argp, GNU ext
1305 argp_failure NEW: argp, GNU ext
1306 argp_help NEW: argp, GNU ext
1307 argp_parse NEW: argp, GNU ext
1308 argp_program_bug_address NEW: argp, GNU ext
1309 argp_program_version NEW: argp, GNU ext
1310 argp_program_version_hook NEW: argp, GNU ext
1311 argp_state_help NEW: argp, GNU ext
1312 argp_usage NEW: argp, GNU ext
1313 authdes_create NEW: Secure RPC
1314 authdes_getucred NEW: Secure RPC
1315 authdes_pk_create NEW: Secure RPC
1316 backtrace NEW: GNU ext.
1317 backtrace_symbols NEW: GNU ext.
1318 backtrace_symbols_fd NEW: GNU ext.
1320 cacosf NEW: ISO C 9x
1321 cacosh NEW: ISO C 9x
1322 cacoshf NEW: ISO C 9x
1323 cacoshl NEW: ISO C 9x
1324 cacosl NEW: ISO C 9x
1331 casinf NEW: ISO C 9x
1332 casinh NEW: ISO C 9x
1333 casinhf NEW: ISO C 9x
1334 casinhl NEW: ISO C 9x
1335 casinl NEW: ISO C 9x
1337 catanf NEW: ISO C 9x
1338 catanh NEW: ISO C 9x
1339 catanhf NEW: ISO C 9x
1340 catanhl NEW: ISO C 9x
1341 catanl NEW: ISO C 9x
1342 cbc_crypt NEW: Secure RPC
1346 ccoshf NEW: ISO C 9x
1347 ccoshl NEW: ISO C 9x
1353 cimagf NEW: ISO C 9x
1354 cimagl NEW: ISO C 9x
1355 clearerr_locked REMOVED
1356 clntunix_create NEW: sunrpc ext
1358 clog10 NEW: ISO C 9x
1359 clog10f NEW: ISO C 9x
1360 clog10l NEW: ISO C 9x
1370 cprojf NEW: ISO C 9x
1371 cprojl NEW: ISO C 9x
1373 crealf NEW: ISO C 9x
1374 creall NEW: ISO C 9x
1379 csinhf NEW: ISO C 9x
1380 csinhl NEW: ISO C 9x
1383 csqrtf NEW: ISO C 9x
1384 csqrtl NEW: ISO C 9x
1388 ctanhf NEW: ISO C 9x
1389 ctanhl NEW: ISO C 9x
1391 des_setparity NEW: Secure RPC
1392 ecb_crypt NEW: Secure RPC
1393 endutxent NEW: Unix98
1395 exp10f NEW: ISO C 9x
1396 exp10l NEW: ISO C 9x
1400 fattach NEW: STREAMS
1401 fdetach NEW: STREAMS
1405 feclearexcept NEW: ISO C 9x
1406 fegetenv NEW: ISO C 9x
1407 fegetexceptflag NEW: ISO C 9x
1408 fegetround NEW: ISO C 9x
1409 feholdexcept NEW: ISO C 9x
1411 feraiseexcept NEW: ISO C 9x
1412 ferror_locked REMOVED
1413 fesetenv NEW: ISO C 9x
1414 fesetexceptflag NEW: ISO C 9x
1415 fesetround NEW: ISO C 9x
1416 fetestexcept NEW: ISO C 9x
1417 feupdateenv NEW: ISO C 9x
1418 fflush_locked REMOVED
1422 fgets_unlocked NEW: GNU ext.
1423 fileno_locked REMOVED
1435 fputc_locked REMOVED
1436 fputs_unlocked NEW: GNU ext.
1437 fread_unlocked NEW: GNU ext.
1442 fstatvfs NEW: Unix98
1446 ftruncate64 NEW: LFS
1448 fwrite_unlocked NEW: GNU ext.
1449 gai_strerror NEW: IPv6
1453 getchar_locked REMOVED
1455 getdate_err NEW: Unix98
1456 getdate_r NEW: GNU ext.
1458 getnameinfo NEW: IPv6
1459 getnetname NEW: Secure RPC
1460 getpmsg NEW: STREAMS
1461 getpt NEW: Unix98 PTY
1462 getrlimit64 NEW: LFS
1463 getutxent NEW: Unix98
1464 getutxid NEW: Unix98
1465 getutxline NEW: Unix98
1466 glob64 NEW: GNU ext.
1467 globfree64 NEW: GNU ext.
1468 gnu_get_libc_release NEW: GNU ext.
1469 gnu_get_libc_version NEW: GNU ext.
1470 grantpt NEW: Unix98 PTY
1471 host2netname NEW: Secure RPC
1473 iconv_close NEW: iconv
1474 iconv_open NEW: iconv
1475 if_freenameindex NEW: IPv6
1476 if_indextoname NEW: IPv6
1477 if_nameindex NEW: IPv6
1478 if_nametoindex NEW: IPv6
1479 in6addr_any NEW: IPv6
1480 in6addr_loopback NEW: IPv6
1481 inet6_isipv4mapped NEW: IPv6
1482 isastream NEW: STREAMS
1483 iswblank NEW: GNU ext.
1484 key_decryptsession NEW: Secure RPC
1485 key_decryptsession_pk NEW: Secure RPC
1486 key_encryptsession NEW: Secure RPC
1487 key_encryptsession_pk NEW: Secure RPC
1488 key_gendes NEW: Secure RPC
1489 key_get_conv NEW: Secure RPC
1490 key_secretkey_is_set NEW: Secure RPC
1491 key_setnet NEW: Secure RPC
1492 key_setsecret NEW: Secure RPC
1493 llrint NEW: ISO C 9x
1494 llrintf NEW: ISO C 9x
1495 llrintl NEW: ISO C 9x
1496 llround NEW: ISO C 9x
1497 llroundf NEW: ISO C 9x
1498 llroundl NEW: ISO C 9x
1503 lrintf NEW: ISO C 9x
1504 lrintl NEW: ISO C 9x
1505 lround NEW: ISO C 9x
1506 lroundf NEW: ISO C 9x
1507 lroundl NEW: ISO C 9x
1509 makecontext NEW: Unix98
1510 mempcpy NEW: GNU ext.
1513 modify_ldt NEW: kernel
1517 nearbyint NEW: ISO C 9x
1518 nearbyintf NEW: ISO C 9x
1519 nearbyintl NEW: ISO C 9x
1520 netname2host NEW: Secure RPC
1521 netname2user NEW: Secure RPC
1522 nexttoward NEW: ISO C 9x
1523 nexttowardf NEW: ISO C 9x
1524 nexttowardl NEW: ISO C 9x
1528 passwd2des NEW: Secure RPC
1530 pow10f NEW: GNU ext.
1531 pow10l NEW: GNU ext.
1534 printf_size NEW: GNU ext.
1535 printf_size_info NEW: GNU ext.
1536 profil_counter REMOVED
1537 pthread_mutexattr_getkind_np REPLACED
1538 pthread_mutexattr_setkind_np REPLACED
1539 ptsname NEW: Unix98 PTY
1540 ptsname_r NEW: Unix98 PTY
1542 putchar_locked REMOVED
1543 putgrent NEW: GNU ext.
1545 putpmsg NEW: STREAMS
1546 pututxline NEW: Unix98
1550 readdir64_r NEW: LFS
1551 remquo NEW: ISO C 9x
1552 remquof NEW: ISO C 9x
1553 remquol NEW: ISO C 9x
1555 roundf NEW: ISO C 9x
1556 roundl NEW: ISO C 9x
1558 scalbln NEW: ISO C 9x
1559 scalblnf NEW: ISO C 9x
1560 scalblnl NEW: ISO C 9x
1562 sendfile NEW: kernel
1563 setcontext NEW: Unix98
1564 setrlimit64 NEW: LFS
1565 setutxent NEW: Unix98
1567 sigignore NEW: Unix98
1568 sigqueue NEW: POSIX.1b
1569 sigrelse NEW: Unix98
1570 sigset NEW: POSIX.1b
1571 sigtimedwait NEW: POSIX.1b
1572 sigwaitinfo NEW: POSIX.1b
1573 sincos NEW: GNU ext.
1574 sincosf NEW: GNU ext.
1575 sincosl NEW: GNU ext.
1579 strcasestr NEW: GNU ext.
1580 strtoimax NEW: ISO C 9x
1581 strtoumax NEW: ISO C 9x
1582 strverscmp NEW: GNU ext.
1583 svcauthdes_stats NEW: Secure RPC
1584 svcunix_create NEW: sunrpc etx
1585 svcunixfd_create NEW: sunrpc ext
1586 swapcontext NEW: Unix98
1587 tcgetsid NEW: Unix98 PTY
1588 tdestroy NEW: GNU ext.
1589 tgamma NEW: ISO C 9x
1590 tgammaf NEW: ISO C 9x
1591 tgammal NEW: ISO C 9x
1595 truncf NEW: ISO C 9x
1596 truncl NEW: ISO C 9x
1598 unlockpt NEW: Unix98 PTY
1599 updwtmpx NEW: Unix98
1600 user2netname NEW: Secure RPC
1601 utmpxname NEW: Unix98
1602 versionsort NEW: GNU ext.
1603 versionsort64 NEW: GNU ext.
1605 wcscasecmp NEW: GNU ext.
1606 wcsncasecmp NEW: GNU ext.
1607 wcsnlen NEW: GNU ext.
1608 wcstoimax NEW: ISO C 9x
1609 wcstoll NEW: ISO C 9x
1610 wcstoull NEW: ISO C 9x
1611 wcstoumax NEW: ISO C 9x
1613 wordexp NEW: POSIX.2
1614 wordfree NEW: POSIX.2
1615 write_profiling REMOVED
1616 xdecrypt NEW: Secure RPC
1617 xdr_authdes_cred NEW: Secure RPC
1618 xdr_authdes_verf NEW: Secure RPC
1619 xdr_cryptkeyarg NEW: Secure RPC
1620 xdr_cryptkeyarg2 NEW: Secure RPC
1621 xdr_cryptkeyres NEW: Secure RPC
1622 xdr_getcredres NEW: Secure RPC
1623 xdr_key_netstarg NEW: Secure RPC
1624 xdr_key_netstres NEW: Secure RPC
1625 xdr_keybuf NEW: Secure RPC
1626 xdr_keystatus NEW: Secure RPC
1627 xdr_netnamestr NEW: Secure RPC
1628 xdr_sizeof NEW: Secure RPC
1629 xdr_unixcred NEW: sunrpc ext
1630 xencrypt NEW: Secure RPC
1631 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1642 * inet_ntoa is thread-safe
1644 * updwtmp is moved from libutil to libc
1646 * rewrite of cbrt function
1648 * update of timezone data
1662 * add atoll function
1664 * fix complex problems in Berkeley DB code
1666 * fix math functions
1670 * fixed lots of header problems (especially Linux/GNU specific)
1672 * dynamic loader preserves all registers
1674 * Roland McGrath provided support for handling of auxiliary objects in
1675 the ELF dynamic loader.
1677 * support for parallel builds is improved
1681 * GNU extensions are no longer declared by default. To enable them you
1682 must define the macro `_GNU_SOURCE' in your program or compile with
1685 * The library has changed from using GNU ld symbol aliases to using weak
1686 symbols where available. The ELF object file format supports weak
1687 symbols; GNU ld also supports weak symbols in the a.out format. (There
1688 is also now support for other GNU ld extensions in ELF. Use the
1689 `--with-elf' option to configure to indicate you have ELF, and
1690 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1691 of many files which contained only symbol aliases, reducing the size of
1692 the source and the compiled library; many other files were renamed to
1693 less cryptic names previously occupied by the symbol alias files.
1694 There is a new header file <elf.h> for programs which operate on
1695 files in the ELF format.
1697 * Converted to Autoconf version 2, so `configure' has more options.
1698 Run `configure --help' to see the details.
1700 * The library can now be configured to build profiling, highly-optimized
1701 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1702 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1703 `configure' enable building these extra libraries. The shared library is
1704 built by default when using both ELF and GNU ld. When shared libraries
1705 are enabled, the new library `-ldl' is available for arbitrary run-time
1706 loading of shared objects; its interface is defined in <dlfcn.h>. The
1707 new header file <link.h> gives access to the internals of the run-time
1708 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1709 application of same name on other systems and it provides information
1710 about dynamically linked binaries.
1712 * The C library now provides the run-time support code for profiling
1713 executables compiled with `-pg'. Programs can control the profiling code
1714 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1715 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1716 the support for this file format was contributed by David Mosberger-Tang.
1718 * The math code has been replaced with a math library based on fdlibm from
1719 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1720 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1721 functions. The math functions now reside in a separate library, so
1722 programs using them will need to use `-lm' their linking commands.
1724 * John C. Bowman contributed optimized ix87 assembler inline functions.
1726 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1727 mechanism similar to that found in Solaris 2. This is now used for the
1728 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1729 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1730 file controls what services are used for each individual database. This
1731 works by loading shared libraries with names specified in `nsswitch.conf',
1732 so service modules can be changed or added at any time without even
1733 relinking any program. Currently there are the file, db, and NIS based
1734 NSS services available.
1736 * The new functions `strtoq' and `strtouq' parse integer values from
1737 strings, like `strtol' and `strtoul', but they return `long long int' and
1738 `unsigned long long int' values, respectively (64-bit quantities).
1740 * The new functions `strtof' and `strtold' parse floating-point values from
1741 strings, like `strtod', but they return `float' and `long double' values,
1742 respectively (on some machines `double' and `long double' are the same).
1744 * Ulrich Drepper has contributed new implementations of the floating-point
1745 printing and reading code used in the `printf' family of functions and
1746 `strtod', `strtof', and `strtold'. These new functions are perfectly
1747 accurate, and much faster than the old ones.
1749 * The implementation of the POSIX locale model was completely rewritten by
1750 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1751 to compile the POSIX locale definition.
1753 * The former dummy implementations of the strcoll and strxfrm function are
1754 now replaced by fully functional code contributed by Ulrich Drepper. The
1755 collation information comes from the POSIX locale definitions.
1757 * The new header <langinfo.h> defines an interface for accessing
1758 various locale-dependent data (using the locale chosen with `setlocale').
1760 * Ulrich Drepper has contributed a new suite of functions for operation on
1761 wide-character and multibyte-character strings, in <wchar.h>;
1762 and classification and case conversion of wide characters, in <wctype.h>.
1763 These new functions are conforming to the ISO C, Amendement 1 specification.
1765 * There is now a second implementation of the standard I/O library available.
1766 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1767 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1769 * You can now use positional parameter specifications in format strings
1770 for the `printf' and `scanf' families of functions. For example,
1771 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1772 ``Number 6, Mr Jones''. This is mainly useful when providing different
1773 format strings for different languages, whose grammars may dictate
1774 different orderings of the values being printed. To support this
1775 feature, the interface for `register_printf_handler' has changed; see
1776 the header file <printf.h> for details.
1778 * The `printf' and `scanf' families of functions now understand a new
1779 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1780 to group numbers as indicated by the locale; for `scanf' and friends, this
1781 says to accept as valid only a number with all the proper grouping
1782 separators in the right places. In the default "C" locale, numbers are
1783 not grouped; but locales for specific countries will define the usual
1784 conventions (i.e. separate thousands with `,' in the US locale).
1786 * The pgrp functions have been regularized, slightly incompatibly but much
1787 less confusingly. The core functions are now `getpgid' and `setpgid',
1788 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1789 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1790 provided for compatibility. There is no longer an incompatible `getpgrp'
1791 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1793 * The new header file <fts.h> and suite of functions simplify programs that
1794 operate on directory trees. This code comes from 4.4 BSD.
1796 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1797 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1798 NSS scheme used in glibc.
1800 * There is a new malloc debugging hook `__memalign_hook'.
1802 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1803 `unsigned int' in <sys/types.h>. These are for compatibility only and
1804 their use is discouraged.
1806 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1807 done differently, so that it works even without GNU ld.
1809 * New function `euidaccess' checks allowed access to a file like `access',
1810 but using the effective IDs instead of the real IDs.
1812 * The time zone data files have been updated for the latest and greatest
1813 local time conventions of the countries of the world.
1815 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1818 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1819 for formatting floating-point numbers. They are provided only for
1820 compatibility; new programs should use `sprintf' instead. There are
1821 also equivalent function for the `long double' floating-point type and
1822 all functions also exist in a reentrant form.
1824 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1825 functions for maintaining the login-record files (primarily of use to
1826 system programs such as `login'), and convenient functions for
1827 allocating and initializing a pseudo-terminal (pty) device.
1829 * Ulrich Drepper has contributed new support for System V style
1830 shared memory and IPC on systems that support it.
1832 * Ulrich Drepper has contributed several miscellaneous new functions found
1833 in System V: The `hsearch' family of functions provide an effective
1834 implementation of hash tables; `a64l' and `l64a' provide a very simple
1835 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1838 * Ulrich Drepper has contributed new reentrant counterparts for the
1839 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1841 * Ulrich Drepper has contributed new, highly-optimized versions of several
1842 string functions for the i486/Pentium family of processors.
1844 * Ulrich Drepper has updated the Linux-specific code, based largely
1845 on work done in Hongjiu Lu's version of GNU libc for Linux.
1846 The GNU library now supports Linux versions 2.0.10 and later,
1847 using the ELF object file format (i[3456]86-*-linux).
1849 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1851 * David Mosberger-Tang and Richard Henderson have ported the C library
1852 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1853 dynamic linking support for ELF/Alpha.
1855 * Richard Henderson contributed several Alpha optimized assembler function
1856 for arithmetic and string handling.
1858 * Ulrich Drepper has contributed a new set of message catalog functions to
1859 support multiple languages using the <libintl.h> interface, for use with
1860 his new package GNU gettext. Translation volunteers have contributed
1861 catalogs of the library's messages in Spanish, German, and Korean.
1863 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1864 program and the `catgets' function for reading the catalog files it
1865 creates. (The <libintl.h> interface is preferred; we include the
1866 <nl_types.h> interface using `catgets' only for source compatibility with
1867 programs already written to use it.)
1869 * New header file <values.h> gives SVID-compatible names for <limits.h>
1872 * Various new macros, declarations, and small header files for compatibility
1875 * New function `group_member' is a convenient way to check if a process has
1876 a given effective group ID.
1878 * When using GCC 2.7 and later, the socket functions are now declared in a
1879 special way so that passing an argument of type `struct sockaddr_in *',
1880 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1881 `struct sockaddr *' type, does not generate a type-clash warning.
1883 * New function `error' declared in header file <error.h> is a convenient
1884 function for printing error messages and optionally exiting; this is the
1885 canonical function used in GNU programs. The new functions `err', `warn',
1886 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1887 doing the same thing.
1889 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1890 POSIX.2 `glob' function to do ~ and {...} expansion.
1892 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1893 `clearenv' which is used in POSIX.9 is also available.
1895 * New function `getsid' returns session ID number on systems that support it.
1897 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1898 files <db.h> and <mpool.h> provide a rich set of functions for several
1899 types of simple databases stored in memory and in files, and <ndbm.h> is
1900 an old `ndbm'-compatible interface using the `db' functions. Link with
1901 `-ldb' to get these functions.
1903 * New macro `strdupa' copies a string like `strdup', but uses local stack
1904 space from `alloca' instead of dynamic heap space from `malloc'.
1906 * New function `strnlen' is like `strlen' but searches only a given maximum
1907 number of characters for the null terminator. `stpncpy', `strndup' and
1908 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1911 * New function `statfs' in header <sys/statfs.h>.
1913 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1914 provide convenient functions for operating on blocks of null-terminated
1917 * A new suite of functions in <utmp.h> handle all the details of reading
1918 and writing the utmp file.
1920 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1923 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1924 completely POSIX compliant and also implemented the extended functionality
1925 to handle alternate digit representation and alternate era date formats.
1927 * Ulrich Drepper provided an implementation of the `strptime' function
1928 defined in XPG4.2 which transforms a string into a `struct tm' value.
1930 * Paul Eggert provided the tzselect shell script as part of the timezone
1931 code. The shell script makes it easy to select the correct timezone
1934 * The implementation of the malloc family of functions is completely replaced
1935 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1936 The implementation uses the mmap function (if available) and it is
1937 optimized for the use in multi threaded programs.
1939 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1940 functions. This new functionality is usable by specifying a special
1941 salt string and it is compatible with implementation on *BSD systems.
1943 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1944 `getsubopt' to handle second level command line options, `bsd_signal'
1945 to access BSD style `signal' functionality, the obsolete `regexp' style
1948 * the `lchown' function is available on system which support this
1951 * The implementation of the shadow password handling function was contributed
1954 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1956 * POSIX.1g support was added. The <sys/select.h> header is available,
1957 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1958 implementation of `getaddrinfo'.
1962 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1964 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1965 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1967 * The new function `daemon' from 4.4 BSD is useful for server programs that
1968 want to put themselves in the background.
1970 * Joel Sherrill has contributed support for several standalone boards that
1971 run without an operating system.
1973 * `printf', `scanf' and friends now accept a `q' type modifier for long
1974 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1976 * All of the code taken from BSD (notably most of the math and networking
1977 routines) has been updated from the BSD 4.4-Lite release.
1979 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1981 * The new functions `getdomainname' and `setdomainname' fetch or change the
1982 YP/NIS domain name. These are system calls which exist on systems which
1985 * The time zone data files have been updated for the latest international
1988 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1989 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1993 * The C library now includes support for Sun RPC, from Sun's free
1994 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1995 are included. (There is still no support for YP.)
1997 * Tom Quinn has contributed a port of the C library to SGI machines running
1998 Irix 4 (mips-sgi-irix4).
2000 * The new `lockf' function is a simplified interface to the locking
2001 facilities of `fcntl', included for compatibility.
2003 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2005 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2007 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2010 * The error message printed by `assert' for a failed assertion now includes
2011 the name of the program (if using GNU ld) and the name of the calling
2012 function (with versions of GCC that support this).
2014 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2016 * The library now includes the <sys/mman.h> header file and memory
2017 management functions `mmap', `munmap', `mprotect', `msync', and
2018 `madvise', on systems that support those facilities.
2020 * The interface for `mcheck' has changed slightly: the function called to
2021 abort the program when an allocation inconsistency is detected now takes
2022 an argument that indicates the type of failure. The new function
2023 `mprobe' lets you request a consistency check for a particular block at
2024 any time (checks are normally done only when you call `free' or `realloc'
2027 * It is now possible to easily cross-compile the C library, building on one
2028 system a library to run on another machine and/or operating system. All
2029 you need to do is set the variable `HOST_CC' in `configparms' to the
2030 native compiler for programs to run on the machine you are building on (a
2031 few generator programs are used on Unix systems); set `CC' to the
2034 * The new function `fexecve' (only implemented on the GNU system) executes
2035 a program file given a file descriptor already open on the file.
2039 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2040 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2042 * You can set the variable `libprefix' in `configparms' to specify a prefix
2043 to be prepended to installed library files; this makes it easy to install
2044 the GNU C library to be linked as `-lgnuc' or whatever.
2046 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2047 copies a limited number of characters from a string, and returns the
2048 address of the last character written.
2050 * You no longer need to check for whether the installed `stddef.h' is
2051 compatible with the GNU C library. configure now checks for you.
2053 * You can now define a per-stream `fileno' function to convert the
2054 stream's cookie into an integral file descriptor.
2056 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2057 allocates zero bytes of storage, and returns a unique pointer which
2058 you can pass to `realloc' or `free'. The behavior is undefined if
2059 you dereference this pointer.
2061 * The C library now runs on Sony NEWS m68k machines running either
2062 NewsOS 3 or NewsOS 4.
2064 * The new `syscall' function is a system-dependent primitive function
2065 for invoking system calls. It has the canonical behavior on Unix
2066 systems, including unreliable return values for some calls (such as
2067 `pipe', `fork' and `getppid').
2069 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2070 to `EAGAIN', which is the preferred name. On systems whose kernels
2071 use two distinct codes, the C library now translates EWOULDBLOCK to
2072 EAGAIN in every system call function.
2076 * The GNU C Library Reference Manual is now distributed with the library.
2077 `make dvi' will produce a DVI file of the printed manual.
2078 `make info' will produce Info files that you can read on line using C-h i
2079 in Emacs or the `info' program.
2080 Please send comments on the manual to bug-glibc-manual@gnu.org.
2082 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2084 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2086 * Jason Merrill has contributed a port to the Sequent Symmetry running
2087 Dynix version 3 (i386-sequent-dynix).
2089 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2090 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2092 * New function `memory_warnings' lets you arrange to get warnings when
2093 malloc is running out of memory to allocate, like Emacs gives you.
2095 * The C library now contains the relocating allocator used in Emacs 19 for
2096 its editing buffers. This allocator (ralloc) minimizes allocation
2097 overhead and fragmentation by moving allocated regions around whenever it
2098 needs to. You always refer to a ralloc'd region with a "handle" (a
2099 pointer to a pointer--an object of type `void **').
2101 * There is a new `printf' format: `%m' gives you the string corresponding
2102 to the error code in `errno'.
2104 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2105 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2106 pass, the `a' modifier says to fill in a `char **' you pass with a
2109 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2110 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2111 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2113 * `mkstemp' is a traditional Unix function to atomically create and open a
2114 uniquely-named temporary file.
2118 * The standard location for the file that says what the local timezone is
2119 has changed again. It is now `/usr/local/etc/localtime' (or more
2120 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2122 * The distribution no longer contains any files with names longer than 14
2125 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2126 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2128 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2132 * The configuration process has changed quite a bit. The `configure'
2133 script is now used just like the configuration scripts for other GNU
2134 packages. The `sysdeps' directory hierarchy is much rearranged.
2135 The file `INSTALL' explains the new scheme in detail.
2137 * The header files no longer need to be processed into ANSI C and
2138 traditional C versions. There is just one set of files to install, and
2139 it will work with ANSI or old C compilers (including `gcc -traditional').
2141 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2142 MIPS DECStation running Ultrix 4.
2144 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2145 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2146 made itself into a shared library.
2148 * Yet further improved support for the i386, running 4.3 BSD-like systems
2149 (such as Mach 3 with the Unix single-server), or System V.
2151 * New function `strncasecmp' to do case-insensitive string comparison
2152 with limited length.
2154 * New function `strsep' is a reentrant alternative to `strtok'.
2156 * New functions `scandir' and `alphasort' for searching directories.
2158 * New function `setenv' is a better interface to `putenv'.
2160 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2161 function for traversing a directory tree.
2163 * The GNU obstack package is now also part of the C library.
2164 The new function `open_obstack_stream' creates a stdio stream that
2165 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2166 formatted output directly to an obstack.
2168 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2169 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2171 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2173 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2174 things to your strings.
2176 * There are some new test programs: test-fseek, testmb, and testrand.
2178 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2179 These ports are not finished, but are a good starting place for really
2180 supporting those systems.
2182 * `/etc/localtime' is now the standard location for the file that says what
2183 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2184 This follows the general principle that `/etc' is the place for all local
2185 configuration files.
2187 * The C library header files now use `extern "C"' when used by the C++
2188 compiler, so the C library should now work with C++ code.
2190 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2191 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2194 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2195 function which uses the `merge sort' algorithm, and is said to be
2196 significantly faster than the old GNU `qsort' function. Merge sort is
2197 now the standard `qsort' function. The new algorithm can require a lot
2198 of temporary storage; so, the old sorting function is called when the
2199 required storage is not available.
2201 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2202 provides the Unix `crypt' function, plus some other entry points.
2204 * The code and header files taken from 4.4 BSD have been updated with the
2205 latest files released from Berkeley.
2207 ----------------------------------------------------------------------
2208 Copyright information:
2210 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2212 Permission is granted to anyone to make or distribute verbatim copies
2213 of this document as received, in any medium, provided that the
2214 copyright notice and this permission notice are preserved,
2215 thus giving the recipient permission to redistribute in turn.
2217 Permission is granted to distribute modified versions
2218 of this document, or of portions of it,
2219 under the above conditions, provided also that they
2220 carry prominent notices stating who last changed them.
2223 version-control: never
projects / thirdparty / glibc.git / blob