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.
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.
29 * The following bugs are resolved with this release:
31 1349, 3439, 3479, 3665, 5044, 5246, 5298, 5400, 6530, 6677, 6778, 6808,
32 9685, 9914, 10014, 10038, 10114, 10631, 10873, 11438, 11607, 11638, 11741,
33 12140, 13013, 13412, 13542, 13601, 13603, 13604, 13629, 13679, 13696,
34 13698, 13717, 13741, 13759, 13761, 13763, 13881, 13939, 13950, 13952,
35 13966, 14042, 14047, 14090, 14150, 14151, 14152, 14154, 14157, 14166,
36 14173, 14195, 14197, 14237, 14246, 14251, 14252, 14283, 14298, 14303,
37 14307, 14328, 14331, 14336, 14337, 14347, 14349, 14368, 14376, 14417,
38 14447, 14459, 14476, 14477, 14501, 14505, 14510, 14516, 14518, 14519,
39 14530, 14532, 14538, 14543, 14544, 14545, 14557, 14562, 14568, 14576,
40 14579, 14583, 14587, 14595, 14602, 14610, 14621, 14638, 14645, 14648,
41 14652, 14660, 14661, 14669, 14672, 14683, 14694, 14716, 14719, 14743,
42 14767, 14783, 14784, 14785, 14793, 14796, 14797, 14801, 14803, 14805,
43 14807, 14811, 14815, 14821, 14822, 14824, 14828, 14831, 14833, 14835,
44 14838, 14856, 14863, 14865, 14866, 14868, 14869, 14871, 14872, 14879,
45 14889, 14893, 14898, 14914.
47 * Optimization of memcpy for MIPS.
49 * CVE-2011-4609 svc_run() produces high cpu usage when accept fails with
50 EMFILE has been fixed (Bugzilla #14889).
52 * The add-on ports collection is now distributed in the "ports" subdirectory
53 of the main GNU C Library distribution, rather than separately.
55 * Port to ARM AArch64 contributed by Linaro.
57 * Support for STT_GNU_IFUNC symbols added for s390 and s390x.
58 Optimized versions of memcpy, memset, and memcmp added for System z10 and
60 Implemented by Andreas Krebbel.
62 * The new function secure_getenv allows secure access to the environment,
63 returning NULL if running in a SUID/SGID process. This function replaces
64 the internal function __secure_getenv.
66 * SystemTap static probes have been added into the dynamic linker.
67 Implemented by Gary Benson.
69 * Optimizations of string functions strstr, strcasestr and memmem.
70 Implemented by Maxim Kuvyrkov.
72 * The minimum Linux kernel version that this version of the GNU C Library
73 can be used with is 2.6.16.
75 * Optimizations of string functions memchr, wcschr, wcscpy, and wcsrchr for
76 powerpc POWER7. Implemented by Will Schmidt.
78 * New configure option --disable-nscd builds the C library such that it
79 never attempts to contact the Name Service Caching Daemon (nscd).
80 New configure option --disable-build-nscd avoids building nscd itself;
81 this is the default if --disable-nscd is used.
83 * Improved support for cross-compilation, including cross-testing and
84 bootstrap builds without a previously built glibc.
86 * Several testsuite tests are now able to test multiple IFUNC variants of an
87 interface, rather than just testing the one that would be chooen by
90 * New configure options --with-bugurl and --with-pkgversion, for
91 distributors to use to embed their bug-reporting and package version
92 information in --help and --version output.
94 * The ttyname and ttyname_r functions on Linux now fall back to searching for
95 the tty file descriptor in /dev/pts or /dev if /proc is not available. This
96 allows creation of chroots without the procfs mounted on /proc.
98 * The `crypt' function now fails if passed salt bytes that violate the
99 specification for those values. On Linux, the `crypt' function will
100 consult /proc/sys/crypto/fips_enabled to determine if "FIPS mode" is
101 enabled, and fail on encrypted strings using the MD5 or DES algorithm
102 when the mode is enabled.
104 * The `clock_*' suite of functions (declared in <time.h>) is now available
105 directly in the main C library. Previously it was necessary to link with
106 -lrt to use these functions. This change has the effect that a
107 single-threaded program that uses a function such as `clock_gettime' (and
108 is not linked with -lrt) will no longer implicitly load the pthreads
109 library at runtime and so will not suffer the overheads associated with
110 multi-thread support in other code such as the C++ runtime library.
112 * New locales: ayc_PE, doi_IN, ia_FR, mni_IN, nhn_MX, niu_NU, niu_NZ,
117 * The following bugs are resolved with this release:
119 174, 208, 350, 369, 411, 706, 766, 887, 2074, 2541, 2547, 2548, 2550,
120 2551, 2552, 2553, 2554, 2562, 2563, 2565, 2566, 2570, 2576, 2636, 2678,
121 3335, 3440, 3748, 3768, 3866, 3868, 3906, 3976, 3992, 4026, 4108, 4596,
122 4822, 5077, 5461, 5805, 5993, 6471, 6486, 6578, 6649, 6730, 6770, 6794,
123 6884, 6890, 6894, 6895, 6907, 6911, 6959, 7064, 9739, 9902, 10110, 10135,
124 10140, 10153, 10210, 10254, 10346, 10375, 10545, 10716, 10846, 11174,
125 11322, 11365, 11451, 11494, 11521, 11677, 11837, 11959, 12047, 12097,
126 12193, 12194, 12297, 12298, 12301, 12340, 12354, 12416, 12495, 13058,
127 13223, 13361, 13525, 13526, 13527, 13528, 13529, 13530, 13531, 13532,
128 13533, 13547, 13551, 13552, 13553, 13555, 13556, 13559, 13563, 13566,
129 13576, 13579, 13583, 13592, 13594, 13613, 13618, 13637, 13656, 13658,
130 13673, 13691, 13695, 13704, 13705, 13706, 13718, 13726, 13738, 13739,
131 13743, 13750, 13758, 13760, 13761, 13775, 13786, 13787, 13792, 13806,
132 13824, 13840, 13841, 13844, 13846, 13848, 13851, 13852, 13854, 13871,
133 13872, 13873, 13879, 13882, 13883, 13884, 13885, 13886, 13892, 13895,
134 13908, 13910, 13911, 13912, 13913, 13914, 13915, 13916, 13917, 13918,
135 13919, 13920, 13921, 13922, 13923, 13924, 13926, 13927, 13928, 13938,
136 13941, 13942, 13954, 13955, 13956, 13963, 13967, 13968, 13970, 13973,
137 13979, 13983, 13986, 13996, 14012, 14027, 14033, 14034, 14036, 14040,
138 14043, 14044, 14048, 14049, 14050, 14053, 14055, 14059, 14064, 14075,
139 14080, 14083, 14103, 14104, 14109, 14112, 14117, 14122, 14123, 14134,
140 14153, 14183, 14188, 14199, 14210, 14218, 14229, 14241, 14273, 14277,
143 * Support for the x32 ABI on x86-64 added. The x32 target is selected by
144 configuring glibc with:
145 BUILD_CC='gcc' CC='gcc -mx32' CXX='g++ -mx32'
146 Visit <http://sites.google.com/site/x32abi/> for more x32 ABI info.
147 Implemented by H.J. Lu.
151 + define static_assert
153 + do not declare gets
155 + declare at_quick_exit and quick_exit also for ISO C11
157 + aligned_alloc. NB: The code is deliberately allows the size parameter
158 to not be a multiple of the alignment. This is a moronic requirement
159 in the standard but it is only a requirement on the caller, not the
164 + uchar.h support added
166 + CMPLX, CMPLXF, CMPLXL added
168 Implemented by Ulrich Drepper.
170 * Support for the IA-64 has been moved to ports.
172 * Remove support for anything but ELF binary format
174 * Checking versions of poll, ppoll added.
175 Implemented by Ulrich Drepper.
177 * More generic and 64-bit performance optimizations to math functions.
178 Implemented by Ulrich Drepper.
180 * New configure option --enable-obsolete-rpc makes the deprecated RPC
181 headers and functions available at compile time as they were before
182 version 2.14. This option will be removed at some time in the future
183 after the TI-RPC library becomes fully sufficient for the needs of
184 existing applications.
186 * Compatibility code for Linux kernel versions before 2.4 has been removed.
187 Note that glibc is not expected to work with any Linux kernel version
190 * New header <sys/auxv.h> and function getauxval allowing easy access to
191 the AT_* key-value pairs passed from the Linux kernel. The header also
192 defines the HWCAP_* bits associated with the AT_HWCAP key.
194 * New locales: mag_IN
196 * New configure option --enable-systemtap builds SystemTap static probes
197 into libc for setjmp and longjmp and into libpthread for various operations.
198 So far the setjmp/longjmp probes and some of the libpthread probes are
199 provided only for i*86 and x86_64.
200 Implemented by Roland McGrath and Rayson Ho.
202 * Optimized expf for x86-32 and x86-64. Implemented by Liubov Dmitrieva.
204 * More optimized functions for PowerPC. Implemented by Adhemerval Zanella
207 * More optimized functions for SPARC. Implemented by David S. Miller.
209 * Improved support for cross-compilation, especially bootstrap builds
210 without a previously built glibc.
212 * Ports for the TILE-Gx and TILEPro families of processors. Contributed by
213 Chris Metcalf from Tilera.
215 * Support for the old ARM ABI has been removed from ports. Only the EABI is
216 now supported for ARM processors.
218 * The hard-float variant of the ARM EABI now uses /lib/ld-linux-armhf.so.3
219 as the name of the dynamic linker, to distinguish it from the
220 /lib/ld-linux.so.3 dynamic linker used for the base EABI.
222 * Support for CRIS has been removed from ports.
224 * A new class of installed header has been documented for low-level
225 platform-specific functionality. PowerPC added the first instance with a
226 function to provide time base register access. Contributed by Tulio
227 Magno Quites Machado Filho.
229 * ix86 configurations now install header files that are consistent with
230 what x86-64 configurations install. These same header files can be used
231 for -m32, -m64, or -mx32 builds.
232 Contributed by H.J. Lu.
234 * Math library bug fixes. A thorough audit of all open math library bugs was
235 conducted by Joseph Myers. Significant progress was made on many math
236 library bugs resulting in more accurate exceptions and function results.
237 Many thanks to all those that contributed including Andreas Jaeger for his
238 patch review and work on the x87 trigonometric instruction issues.
240 * Timezone data is no longer installed. Timezone-related binaries and scripts
241 will continue to be installed. Users should obtain their timezone data from
242 their distribution provider or from the tzdata package at
243 <ftp://munnari.oz.au/pub/>.
247 * The following bugs are resolved with this release:
249 6779, 6783, 9696, 10103, 10709, 11589, 11929, 12403, 12786, 12840, 12847,
250 12868, 12852, 12874, 12885, 12892, 12906, 12907, 12922, 12935, 12962,
251 13007, 13021, 13061, 13062, 13067, 13068, 13085, 13088, 13090, 13092,
252 13096, 13114, 13118, 13123, 13134, 13138, 13147, 13150, 13166, 13179,
253 13185, 13189, 13192, 13268, 13276, 13282, 13291, 13305, 13328, 13335,
254 13337, 13344, 13358, 13367, 13413, 13416, 13423, 13439, 13446, 13472,
255 13484, 13506, 13515, 13523, 13524, 13538, 13540
257 * New program pldd to list loaded object of a process
258 Implemented by Ulrich Drepper.
260 * Add nss_db support back to glibc. No more dependency on Berkeley db
261 and support for initgroups lookups.
262 Implemented by Ulrich Drepper.
264 * Optimized strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-32.
265 Contributed by HJ Lu.
267 * Improved strcpy, strncpy, stpcpy, stpncpy for SSE2 and SSSE3 on x86-64.
268 Contributed by HJ Lu.
270 * Optimized strcat, strncat on x86-64 and optimized wcscmp, wcslen, strnlen
271 on x86-32 and x86-64.
272 Contributed by Liubov Dmitrieva.
274 * Optimized strchr and strrchr for SSE on x86-32.
275 Contributed by Liubov Dmitrieva.
277 * Optimized memchr, memrchr, rawmemchr, memcmp, wmemcmp, wcschr, wcscpy
278 for x86-64 and x86-32.
279 Contributed by Liubov Dmitrieva.
281 * New interfaces: scandirat, scandirat64
282 Implemented by Ulrich Drepper.
284 * Checking versions of FD_SET, FD_CLR, and FD_ISSET added.
285 Implemented by Ulrich Drepper.
287 * nscd now also caches the netgroup database.
288 Implemented by Ulrich Drepper.
290 * Integrate libm with gcc's -ffinite-math-only option.
291 Implemented by Ulrich Drepper.
293 * Lots of generic, 64-bit, and x86-64-specific performance optimizations
294 to math functions. Implemented by Ulrich Drepper.
296 * Optimized strcasecmp and strncasecmp for AVX on x86-64.
297 Implemented by Ulrich Drepper.
299 * New Linux interfaces: process_vm_readv, process_vm_writev
301 * Optimized strcasecmp and strncasecmp for SSSE3 and SSE4.2 on x86-32.
302 Implemented by Ulrich Drepper.
304 * Optimized nearbyint and strcasecmp for PPC.
305 Implemented by Adhemerval Zanella.
307 * New locales: bho_IN, unm_US, es_CU, ta_LK
311 * The following bugs are resolved with this release:
313 386, 6420, 7101, 9730, 9732, 9809, 10138, 10149, 10157, 11099, 11257,
314 11258, 11487, 11532, 11558, 11578, 11634, 11653, 11668, 11697, 11724,
315 11781, 11799, 11820, 11837, 11857, 11869, 11892, 11895, 11901, 11945,
316 11947, 11952, 11987, 12052, 12083, 12158, 12178, 12200, 12346, 12350,
317 12393, 12420, 12432, 12445, 12449, 12453, 12454, 12460, 12469, 12489,
318 12509, 12510, 12511, 12518, 12527, 12541, 12545, 12551, 12582, 12583,
319 12587, 12597, 12601, 12611, 12625, 12626, 12631, 12650, 12653, 12655,
320 12660, 12671, 12681, 12684, 12685, 12711, 12713, 12714, 12717, 12723,
321 12724, 12734, 12738, 12746, 12766, 12775, 12777, 12782, 12788, 12792,
322 12795, 12811, 12813, 12814, 12841
324 * The RPC implementation in libc is obsoleted. Old programs keep working
325 but new programs cannot be linked with the routines in libc anymore.
326 Programs in need of RPC functionality must be linked against TI-RPC.
327 The TI-RPC implementation is IPv6 enabled and there are other benefits.
329 Visible changes of this change include (obviously) the inability to link
330 programs using RPC functions without referencing the TI-RPC library and the
331 removal of the RPC headers from the glibc headers.
332 Implemented by Ulrich Drepper.
334 * New Linux interfaces: clock_adjtime, name_to_handle_at, open_by_handle_at,
335 syncfs, setns, sendmmsg
337 * New locales: os_RU, bem_ZA, en_ZA, ff_SN, sw_KE, sw_TZ, lb_LU, wae_CH,
338 yue_HK, lij_IT, mhr_RU
340 * New encodings: CP770, CP771, CP772, CP773, CP774
342 * New program sotruss to trace calls through PLTs
343 Implemented by Ulrich Drepper.
345 * The malloc hook implementation is marked deprecated and will be removed
346 from the default implementation in the next version. The design never
347 worked ever since the introduction of threads. Even programs which do
348 not create threads themselves can use multiple threads created internally.
352 * The following bugs are resolved with this release:
354 3268, 6812, 7066, 10085, 10484, 10563, 10851, 11149, 11155, 11577, 11611,
355 11640, 11655, 11701, 11840, 11856, 11883, 11903, 11904, 11968, 11979,
356 12005, 12037, 12067, 12077, 12078, 12092, 12093, 12107, 12108, 12113,
357 12140, 12159, 12167, 12191, 12194, 12201, 12204, 12205, 12207, 12348,
360 * New Linux interfaces: prlimit, prlimit64, fanotify_init, fanotify_mark
362 * POWER7 optimizations: memset, memcmp, strncmp
364 * New optimized string functions for x86-64: strnlen (SSE2),
365 strcasecmp (SSE2, SSSE3, SSE4.2), strncasecmp (SSE2, SSSE3, SSE4.2)
366 Implemented by Ulrich Drepper.
370 * The following bugs are resolved with this release:
372 3662, 4457, 5553, 10162, 10401, 10414, 10554, 10824, 10864, 10915, 10918,
373 10936, 10939, 10958, 10968, 10969, 10972, 10992, 11000, 11001, 11007,
374 11010, 11027, 11039, 11040, 11041, 11043, 11046, 11056, 11070, 11093,
375 11115, 11120, 11125, 11126, 11127, 11134, 11141, 11149, 11183, 11184,
376 11185, 11186, 11187, 11188, 11189, 11190, 11191, 11192, 11193, 11194,
377 11200, 11230, 11235, 11242, 11254, 11258, 11271, 11272, 11276, 11279,
378 11287, 11292, 11319, 11332, 11333, 11387, 11389, 11390, 11394, 11397,
379 11410, 11438, 11449, 11470, 11471, 11520, 11537, 11538, 11571
381 * New interfaces: pthread_getname_np, pthread_setname_np
383 * New Linux interface: recvmmsg
385 * STT_GNU_IFUNC implemented for Sparc by David Miller.
387 * The dynamic linker now recognizes supported ABI versions from the
388 EI_ABIVERSION field in the ELF header.
389 Implemented by Ulrich Drepper.
391 * New NIS mode selector ADJUNCT_AS_SHADOW. The passwd.adjunct.byname table
392 will not be used to fill in password fields in the passwd.byname replies.
393 Instead it is used to synthesize the shadow.byname table, should it be
394 missing. This is a useful mode in some installations involving Solaris.
395 Implemented by Ulrich Drepper.
397 * New locales: kok_IN, sq_MK, cv_RU
401 * The following bugs are resolved with this release:
403 3270, 7094, 9924, 9986, 10011, 10085, 10107, 10159, 10162, 10166, 10183,
404 10195, 10196, 10200, 10203, 10207, 10211, 10213, 10217, 10221, 10229,
405 10262, 10286, 10312, 10315, 10319, 10349, 10360, 10391, 10402, 10416,
406 10418, 10422, 10425, 10446, 10448, 10452, 10540, 10553, 10560, 10564,
407 10609, 10643, 10692, 10713, 10717, 10730, 10731, 10742, 10780, 10784,
408 10789, 10817, 10823, 10840, 10847
410 * New interfaces: execvpe, pthread_sigqueue, mkstemps, mkstemps64, mkostemps,
412 Implemented by Ulrich Drepper.
414 * Checking version of longjmp added that fails if an uninitialized stack
415 frame would be created. Implemented by Ulrich Drepper.
417 * STT_GNU_IFUNC is now supported in static executables.
418 Implemented by H.J. Lu.
420 * STT_GNU_IFUNC implemented for PPC by Alan Modra.
422 * New optimized string functions for x86-64: strstr, strcasestr, memcmp,
423 strcspn, strpbrk, strspn, strcpy, stpcpy, strncpy, strcmp (SSE2, SSE4.2),
424 strncmp (SSE2, SSE4.2), strchr (SSE4.2), strrchr (SSE4.2).
425 Contributed by H.J. Lu.
427 strlen, rawmemchr, strcmp (SSSE3), strncmp (SSSE3).
428 Implemented by Ulrich Drepper.
430 * New optimized string functions for x86: strlen, strcspn, strspn, strpbrk,
432 Contributed by H.J. Lu.
434 * Support for fma instruction in AVX on x86-64.
435 Implemented by H.J. Lu and Ulrich Drepper.
437 * AVX support in x86-64 auditing support in ld.so.
438 Implemented by H.J. Lu.
440 * STB_GNU_UNIQUE support added.
441 Implemented by Ulrich Drepper.
443 * Implement second fallback mode for optimized DNS lookup for even more
444 broken environments. If two requests from the same port are not
445 handled correctly close the socket and open a new one before sending
446 the second request. The 'single-request-reopen' option in /etc/resolv.conf
447 can be used to select this mode right away, instead of rediscovering the
448 necessity is every process again.
449 Implemented by Ulrich Drepper.
451 * New resolver flag RES_USE_DNSSEC to enable use of verified lookup.
452 Implemented by Adam Tkac.
454 * Optimized iconv conversions for S390x.
455 Implemented by Andreas Krebbel.
457 * Using condvars with PI mutexes is now more efficient due to kernel
458 support for requeueing to PI futexes. NPTL support added for x86-64.
459 Implemented by Ulrich Drepper.
461 * New locales: ps_AF, my_MM
465 * The following bugs are resolved with this release:
467 697, 5381, 5807, 6411, 6545, 7040, 7058, 7067, 7080, 7083, 7095, 7098,
468 9677, 9694, 9697, 9701, 9704, 9705, 9706, 9720, 9726, 9730, 9733, 9736,
469 9741, 9750, 9753, 9759, 9781, 9791, 9793, 9823, 9833, 9844, 9880, 9881,
470 9891, 9893, 9895, 9913, 9916, 9920, 9948, 9955, 9957, 9963, 9985, 10052,
471 10069, 10086, 10087, 10090, 10092, 10093, 10100, 10118, 10128
473 * New interfaces: preadv, preadv64, pwritev, pwritev64, malloc_info
474 Implemented by Ulrich Drepper.
476 * New Linux interfaces: accept4, fallocate, fallocate64.
477 Implemented by Ulrich Drepper.
479 * Correct declarations of string function when used in C++ code. This
480 could lead to compile errors for invalid C++ code.
482 * XPG7/POSIX 2008 compilation environment. Many GNU-specific functions are
485 * New POSIX 2008 interface: psiginfo
486 Implemented by Ulrich Drepper.
488 * New ISO C++1x interfaces: quick_exit, at_quick_exit
489 Implemented by Ulrich Drepper.
491 * Support for selecting between multiple function definitions at runtime
492 using STT_GNU_IFUNC symbols. Implemented by Ulrich Drepper.
494 * The libcrypt library can now use the hash function implementations in
495 NSS. Implemented by Ulrich Drepper.
497 * The malloc implementation can be compiled to be less memory efficient
498 but higher performing in multi-threaded programs.
499 Implemented by Ulrich Drepper.
501 * New locales: nan_TW@latin, ks_IN
503 * Faster strlen, strchr, strchrnul, strrchr, memchr, and rawmemchr for x86-64.
504 Implemented by Ulrich Drepper.
506 * Extended printf hook support. It is possible to use user-defined types
507 and extend existing format specifiers.
508 Implemented by Ulrich Drepper.
510 * Handling for group shadow files has been added.
511 Implemented by Ulrich Drepper.
513 * DNS IPv4-IPv6 parallel lookup now deals better with broken DNS
514 servers (the case, e.g., for some people using the built-in DNS
515 server in ADSL modems/routers). There is a once-per-process timeout
516 in case of a broken server. To avoid it, users can run nscd or put
517 'options single-request' in /etc/resolv.conf.
518 Implemented by Ulrich Drepper.
522 * The following bugs are resolved with this release:
524 3406, 5209, 5210, 5381, 5794, 5814, 5911, 6428, 6438, 6442, 6447, 6461,
525 6472, 6505, 6544, 6589, 6612, 6634, 6653, 6654, 6657, 6698, 6712, 6713,
526 6719, 6723, 6724, 6740, 6763, 6771, 6790, 6791, 6817, 6824, 6839, 6843,
527 6845, 6856, 6857, 6860, 6867, 6875, 6919, 6920, 6942, 6947, 6955, 6966,
528 6968, 6974, 6980, 6995, 7008, 7009, 7029
530 * Unified lookup for getaddrinfo: IPv4 and IPv6 addresses are now looked
531 up at the same time. Implemented by Ulrich Drepper.
533 * TLS descriptors for LD and GD on x86 and x86-64.
534 Implemented by Alexandre Oliva.
536 * getaddrinfo now handles DCCP and UDPlite.
537 Implemented by Ulrich Drepper.
539 * New fixed-size conversion macros: htobe16, htole16, be16toh, le16toh,
540 htobe32, htole32, be32toh, le32toh, htobe64, htole64, be64toh, le64toh.
541 Implemented by Ulrich Drepper.
543 * New implementation of memmem, strstr, and strcasestr which is O(n).
544 Implemented by Eric Blake.
546 * New Linux interfaces: inotify_init1, dup3, epoll_create1, pipe2
548 * Implement "e" option for popen to open file descriptor with the
549 close-on-exec flag set. Implemented by Ulrich Drepper.
551 * Implement "b" mode for fmemopen. In this mode writes writes don't
552 implicitly add a NUL byte and seeks from the end of the buffer really
553 use the buffer end, not the string length as the basis.
554 Implemented by Ulrich Drepper.
556 * Many functions, exported and internal, now atomically set the close-on-exec
557 flag when run on a sufficiently new kernel. Implemented by Ulrich Drepper.
559 * Sorting rules for some Indian languages (Kannada, Gurumukhi, Telugu,
561 Implemented by Pravin Satpute.
563 * New locales: sd_IN, sd_IN@devanagari, ks_IN@devanagari, ht_HT, en_AG, nl_AW.
567 * The following bugs are resolved with this release:
569 2549, 3112, 4314, 4407, 4997, 5012, 5040, 5112, 5204, 5208, 5209, 5220,
570 5222, 5224, 5225, 5237, 5238, 5240, 5245, 5277, 5346, 5375, 5378, 5382,
571 5424, 5427, 5428, 5435, 5436, 5439, 5441, 5442, 5443, 5451, 5452, 5454,
572 5455, 5463, 5464, 5465, 5475, 5477, 5478, 5520, 5541, 5545, 5553, 5600,
573 5602, 5607, 5614, 5627, 5628, 5736, 5737, 5741, 5753, 5760, 5762, 5768,
574 5774, 5777, 5778, 5779, 5786, 5790, 5818, 5854, 5857, 5903, 5939, 5979,
575 5983, 5995, 5998, 6004, 6007, 6020, 6021, 6024, 6040, 6042
577 * New locales: bo_CN, bo_IN, shs_CA.
579 * New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
581 * Sorting rules for some Indian languages (Devanagari and Gujarati).
582 Implemented by Pravin Satpute.
584 * IPV6 addresses in /etc/resolv.conf can now have a scope ID
586 * nscd caches now all timeouts for DNS entries
587 Implemented by Ulrich Drepper.
589 * nscd is more efficient and wakes up less often.
590 Implemented by Ulrich Drepper.
592 * More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
593 vdprintf, and obstack_vprintf.
594 Implemented by Jakub Jelinek.
596 * Faster memset for x86-64.
597 Implemented by Harsha Jagasia and H.J. Lu.
599 * Faster memcpy on x86.
600 Implemented by Ulrich Drepper.
602 * ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
603 Implemented by Ulrich Drepper.
605 * Faster sqrt and sqrtf implemention for some PPC variants.
606 Implemented by Steven Munroe.
610 * The following bugs are resolved with this release:
612 4125, 4126, 4178, 4359, 4407, 4512, 4514, 4525, 4554, 4556, 4557, 4566,
613 4582, 4586, 4588, 4599, 4610, 4647, 4702, 4705, 4726, 4745, 4772, 4773,
614 4775, 4776, 4792, 4813, 4814, 4816, 4833, 4858, 4860, 4896, 4905, 4925,
615 4936, 4937, 4938, 4941, 4946, 4963, 4972, 5010, 5028, 5043, 5058, 5063,
616 5071, 5103, 5104, 5112, 5113, 5184, 5186
618 * More checking functions: fread, fread_unlocked, open*, mq_open.
619 Implemented by Jakub Jelinek and Ulrich Drepper.
621 * Extend fortification to C++. Implemented by Jakub Jelinek.
623 * Implement 'm' modifier for scanf. Add stricter C99/SUS compliance
624 by not recognizing 'a' as a modifier when those specs are requested.
625 Implemented by Jakub Jelinek.
627 * PPC optimizations to math and string functions.
628 Implemented by Steven Munroe.
630 * New interfaces: mkostemp, mkostemp64. Like mkstemp* but allow additional
631 options to be passed. Implemented by Ulrich Drepper.
633 * More CPU set manipulation functions. Implemented by Ulrich Drepper.
635 * New Linux interfaces: signalfd, eventfd, eventfd_read, and eventfd_write.
636 Implemented by Ulrich Drepper.
638 * Handle private futexes in the NPTL implementation.
639 Implemented by Jakub Jelinek and Ulrich Drepper.
641 * Add support for O_CLOEXEC. Implement in Hurd. Use throughout libc.
642 Implemented by Roland McGrath and Ulrich Drepper.
644 * Linux/x86-64 vDSO support. Implemented by Ulrich Drepper.
646 * SHA-256 and SHA-512 based password encryption.
647 Implemented by Ulrich Drepper.
649 * New locales: ber_DZ, ber_MA, en_NG, fil_PH, fur_IT, fy_DE, ha_NG, ig_NG,
650 ik_CA, iu_CA, li_BE, li_NL, nds_DE, nds_NL, pap_AN, sc_IT, tk_TM, ug_CN,
653 + New iconv modules: MAC-CENTRALEUROPE, ISO-8859-9E, KOI8-RU.
654 Implemented by Ulrich Drepper.
658 * The following bugs are resolved with this release:
660 3156, 3213, 3285, 3291, 3306, 3313, 3320, 3322, 3325, 3326, 3334, 3348,
661 3352, 3363, 3369, 3426, 3427, 3429, 3451, 3458, 3465, 3480, 3483, 3493,
662 3514, 3515, 3559, 3632, 3664, 3673, 3674, 3745, 3747, 3818, 3840, 3842,
663 3851, 3855, 3884, 3885, 3902, 3905, 3919, 3944, 3954, 3955, 3957, 3991,
664 3995, 3996, 4024, 4040, 4069, 4070, 4074, 4076, 4096, 4101, 4102, 4114,
665 4130, 4131, 4181, 4276, 4306, 4342, 4344, 4349, 4364, 4368, 4381, 4392,
666 4403, 4405, 4406, 4411, 4438, 4439, 4455, 4456, 4465, 4512, 4514, 4586,
669 * New Linux interfaces: epoll_pwait, sched_getcpu.
671 * New generic interfaces: strerror_l.
673 * nscd can now cache the services database. Implemented by Ulrich Drepper.
677 * The following bugs are resolved with this release:
679 39, 68, 192, 352, 388, 531, 935, 1006, 1201, 1203, 1386, 1782, 1783, 1784,
680 1785, 1786, 1787, 1951, 1974, 1996, 2072, 2098, 2125, 2134, 2158, 2182,
681 2349, 2376, 2386, 2389, 2415, 2418, 2420, 2423, 2450, 2451, 2466, 2472,
682 2473, 2477, 2498, 2499, 2501, 2502, 2505, 2507, 2508, 2509, 2517, 2526,
683 2569, 2571, 2592, 2611, 2625, 2632, 2644, 2662, 2680, 2683, 2684, 2693,
684 2695, 2703, 2734, 2751, 2764, 2766, 2775, 2792, 2821, 2823, 2832, 2841,
685 2843, 2883, 2892, 2908, 2914, 2926, 2961, 2978, 2980, 2987, 2997, 2998,
686 3013, 3018, 3034, 3040, 3044, 3123, 3124, 3137, 3138, 3143, 3155, 3189,
687 3225, 3251, 3252, 3253, 3273
689 * For Linux, the sorting of addresses returned by getaddrinfo now also
690 handles rules 3, 4, and 7 from RFC 3484. I.e., all rules are handled.
691 Implemented by Ulrich Drepper.
693 * Allow system admin to configure getaddrinfo with the /etc/gai.conf file.
694 Implemented by Ulrich Drepper.
696 * New Linux interfaces: splice, tee, sync_file_range, vmsplice.
698 * New iconv module for MIK. Contributed by Alexander Shopov.
700 * For sites with broken group and/or passwd database, the auto-propagate
701 option of nscd can prevent creating ID lookup entries from the results
702 of a name lookup and vice versa. This usually is no problem but some
703 site might have problems with the default behavior.
704 Implemented by Ulrich Drepper.
706 * Iterating over entire database in NIS can be slow. With the
707 SETENT_BATCH_READ option in /etc/default/nss a system admin can decide
708 to trade time for memory. The entire database will be read at once.
709 Implemented by Ulrich Drepper.
711 * The interfaces introduced in RFC 3542 have been implemented by
714 * Support for the new ELF hash table format was added by Ulrich Drepper.
716 * Support for priority inheritance mutexes added by Jakub Jelinek and
719 * Support for priority protected mutexes added by Jakub Jelinek.
721 * New locales: nr_ZA, pa_PK, ca_AD, ca_FR, ca_IT, el_CY, tr_CY, as_IN,
722 or_IN, csb_PL, fy_NL, sr_ME.
726 * More overflow detection functions.
728 * New iconv converters for IBM1025, IBM1122, IBM1137, IBM1153,
729 IBM1154, IBM1155, IBM1156, IBM1157, and IBM1158 contributed by Jiro Sekiba.
731 More converters for IBM803, IBM901, IBM902, IBM921, IBM1008, IBM1097,
732 IBM1112, IBM1123, IBM1130, IBM1140, IBM1141, IBM1142, IBM1143, IBM1144,
733 IBM1145, IBM1146, IBM1147, IBM1148, IBM1149, IBM1166, IBM1167, IBM4517,
734 IBM4899, IBM4909, IBM4971, IBM5347, IBM9030, IBM9066, IBM9448, IBM12712,
735 IBM16804, IBM1364, IBM1371, IBM1388, IBM1390, and IBM1399 contributed
736 by Masahide Washizawa.
738 * It is now possible to install audit libraries for the dynamic linker using
739 LD_AUDIT. Implemented by Ulrich Drepper.
741 * The LinuxThreads add-on, providing pthreads on Linux 2.4 kernels, is no
742 longer supported. The new NPTL implementation requires Linux 2.6 kernels.
743 For a libc and libpthread that works well on Linux 2.4 kernels, we
744 recommend using the stable 2.3 branch.
746 * The new function open_wmemstream acts like open_memstream,
747 but uses a wchar_t wide character buffer.
749 * The new function ppoll is an improved version of poll, similar to pselect.
751 * New interfaces: fdopendir, openat, fstatat, fchmodat, fchownat,
752 futimesat, faccessat, mkdirat, mkfifoat, mknodat,
753 renameat, unlinkat, linkat, symlinkat, readlinkat.
755 * New Linux kernel system calls: unshare,
756 inotify_init, inotify_add_watch, inotify_rm_watch.
758 * The euidaccess function is now also known by the alias eaccess,
759 for compatibility with some other systems.
761 * Timezone data updated to 2006b version.
765 * The following bugs are resolved with this release:
767 38, 253, 549, 622, 653, 721, 758, 851, 877, 915, 934, 955, 961,
768 1016, 1037, 1076, 1079, 1080, 1081, 1082, 1083, 1084, 1085, 1086,
769 1087, 1088, 1090, 1091, 1092, 1093, 1094, 1095, 1096, 1097, 1098,
770 1099, 1100, 1101, 1102, 1103, 1104, 1105, 1106, 1107, 1108, 1109,
771 1110, 1111, 1112, 1113, 1125, 1137, 1138, 1249, 1250, 1251, 1252,
772 1253, 1254, 1350, 1358, 1394, 1438, 1498, 1534
774 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
776 * As of this release, GCC 4 can be used to compile the C Library.
778 * Timezone data updated to 2005m version.
782 * The following bugs are resolved with this release:
784 284, 592, 602, 626, 633, 640, 650, 661, 671, 681, 693, 700, 710, 719,
785 722, 723, 725, 726, 727, 728, 729, 730, 731, 732, 733, 734, 735, 736,
786 737, 738, 739, 740, 741, 742, 743, 744, 745, 765, 767, 768, 769, 776,
787 777, 787, 821, 822, 823, 825
789 Visit <http://sources.redhat.com/bugzilla/> for the details of each bug.
793 * Support for RFC 3678. Real implementations exist only for Linux so far.
794 Implemented by Ulrich Drepper.
796 * nscd can now cache entries persistently. Expiring entries are reloaded.
797 For speedups the cache can be shared in memory with client processes.
798 Implemented by Ulrich Drepper.
800 * nscd can now perform SELinux checks.
801 Implemented by Matthew Rickard <mjricka@epoch.ncsc.mil>.
803 * getaddrinfo queries are now cached. Canonical name lookup is performed
805 Implemented by Ulrich Drepper.
807 * The nothrow function attribute is used when headers are used by gcc when
808 compiling C code. This can avoid significant amounts of exception
811 * The malloc functions perform more error checking and are stricter when
812 it comes to reacting on errors. The default action is to terminate
813 the process after showing an error message. Implemented by Ulrich Drepper.
815 * Reverse lookups of IPv6 addresses does not use bit string or .ip6.int
816 lookups anymore unless explicitly requested. Implemented by Ulrich Drepper.
818 * Namespaces in ld.so are implemented. DSOs can be loaded in separate
819 namespaces using the new function dlmopen(). This feature is of course,
820 like most other dynamic loading functionality, not available in statically
821 linked applications. Implemented by Ulrich Drepper.
823 * Low-overhead boundary checking variants of string and some stdio functions
824 were added. These are to be used in conjunction with a gcc patch by
825 Jakub Jelinek which adds calls to these functions if possible.
826 Implemented by Jakub Jelinek and Ulrich Drepper.
828 * Old code for several operating systems and machine architectures that
829 have not been in working condition in a long time have been removed from
830 the main source tree maintained by the GNU C Library's maintainers.
831 These files are now reside in the separate `ports' source module
832 that is usable as an add-on when building the library.
836 * New functions `dladdr1' and `dlinfo' in <dlfcn.h> provide more ways to
837 interrogate the dynamic linker, compatible with the Solaris interface.
839 * ELF thread-local storage support (TLS) now works on PowerPC and PowerPC64;
840 implemented by Paul Mackerras, Steven Munroe, and Roland McGrath.
842 * getifaddrs now uses the netlink interface on Linux to get its information.
843 Implemented by Thorsten Kukuk.
845 * getaddrinfo now implements AI_V4MAPPED, AI_ALL, and AI_ADDRCONF.
846 Implemented by Ulrich Drepper.
848 * support for non-executable stacks on x86 has been added. Changes mostly
851 * regex is now much faster for multibyte locales. Changes by Jakub Jelinek
854 * getaddrinfo now performs destination address selection according to
859 * Thread-safe interfaces for many functions that access locale data
860 were added in version 2.3, but these features were omitted from NEWS.
861 Many functions have variants with an `_l' suffix that take a `locale_t'
862 object as a parameter rather than consulting the current locale.
863 The new functions `newlocale', `duplocale', and `freelocale' in <locale.h>
864 create and maintain `locale_t' objects. Additionally, the new function
865 `uselocale' sets "the current locale" (as used by functions not so
866 parameterized) set for an individual thread. These features were added
867 in version 2.3, implemented by Ulrich Drepper and Roland McGrath.
869 * The functions getresuid, getresgid, setresuid, and setresgid, which
870 have long been available on Linux, are now declared in <unistd.h>
871 and are now also available on the Hurd.
873 * ELF thread-local storage support (TLS) now works on x86-64.
875 * The new dynamic string token $LIB is expanded in shared library names.
876 This normally expands to lib, but on some 64-bit platforms to lib64 instead.
878 * Aldy Hernandez contributed complete software floating point support for
879 PowerPC machines with no FPU.
881 * fexecve is implemented on Linux.
883 * The `btowc' function should work at least twice as fast due to
884 specialized callbacks in the iconv modules. Implemented by Bruno Haible.
886 * With approriate thread add-ons cancelable functions are now implemented
887 in libc.so as well. No need to call the function in libpthread. This
888 change allowed to finally disable the incorrect and expensive handling
889 of weak definition in ld.so.
891 * Yet more PLT entries in libc.so have been removed. We finally arrived
892 at the bare minimum. Startup times improved appropriately.
894 * Support for the new Linux/x86 system call interface was added. The
895 AT_SYSINFO auxiliary vector entry is recognized and handled.
899 * Masahide Washizawa contributed iconv modules for IBM1163 and IBM1164
902 * iconv (the program and the interface) now accepts empty names (excluding
903 options like //TRANSLIT) to mean "use charset of current locale".
905 * localedef can now transliterate characters in strings which are not in
906 the provided charmap. The information from the input locale is used.
908 * Prelinking support was added for ELF targets. This requires additional
909 tools and recent versions of the GNU binutils. Contributed by Jakub Jelinek.
911 * Read-only stdio streams now use mmap to speed up operation by eliminating
912 copying and buffer underflows. To use add 'm' to the mode string of
913 the fopen/fdopen/freopen call. Implemented by Ulrich Drepper.
915 * The malloc functions were completely rewritten by Wolfram Gloger based
916 on Doug Lea's malloc-2.7.0.c.
918 * Isamu Hasegawa contributed a completely new and POSIX-conformant
919 implementation of regex.
921 * Bruno Haible upgraded the iconv and locale implementation to support
924 * Contents of the LC_* and LANG environment variables in the CEN style are
925 not recognized anymore. It never was used. Change by Ulrich Drepper.
927 * The runtime (ld.so, libc, libpthread for Linux) now can handle the ELF
928 thread-local storage (TLS) ABI on some platforms.
929 Changes by Ulrich Drepper. SH support by Kaz Kojima.
931 * Bruno Haible contributed iconv converters for ISO-2022-JP-3, SHIFT JIS-X0213,
932 EUC-JISX0213, and TSCII.
934 * New header <ifaddrs.h> with functions `getifaddrs' and `freeifaddrs':
935 BSD-compatible interface for getting all network interface addresses.
936 Implementation for IPv4 by Roland McGrath.
938 * Loading of locale data is faster due to the introduction of a locale
939 archive. Implemented by Roland McGrath and Ulrich Drepper.
941 * Startup times are significantly reduced by not using exported functions
942 inside the library itself. Changes by Jakub Jelinek, Roland McGrath,
945 * Steven Munroe contributed a port to PowerPC64/Linux.
949 * The Hurd now uses the GNU libio implementation of stdio rather than the
950 old GNU stdio implementation, and uses a new ABI (libc.so.0.3).
952 * The Hurd on x86 now has the `ioperm' function and <sys/io.h> header file
953 with the same behavior as the Linux system call of the same name.
957 * Stephen Moshier implemented log2, log10, powl and cbrtl for the
958 128-bit long double format.
960 * Masahide Washizawa contributed iconv modules for IBM1132, IBM1133, IBM1160,
961 IBM1161, and IBM1162 charsets.
963 * Andreas Jaeger contributed a port to x86-64/Linux.
965 * Peter Bruin contributed a port to PowerPC/Hurd.
967 * libc functions using I/O streams now can handle wide-oriented streams
970 * optimizations in the dynamic linker. Binaries created by recent binutils
971 versions start up quicker due to reduced time spent on relocations.
973 * Support for use of gcc3 added by Jakub Jelinek and HJ Lu.
977 * Stephen Moshier implemented cosh, expm1, log1p, acos, sinh, tanh,
978 asinh, atanh, j0 for the 128-bit long double format.
980 * Bruno Haible updated all the code handling Unicode in some form to
983 * Speed of regex for single-byte locales is back to previous levels.
984 Patch by Isamu Hasegawa.
986 * Alpha, SPARC, and IA-64 now also using floating stacks.
988 * Startup time of internationalized applications greatly improved through
989 iconv cache. Use iconvconfig to generate the cache file.
990 Contributed by Ulrich Drepper.
992 * The IA-64 specific part of ld.so was rewritten to eliminate some pretty
993 severe performance problems. Patch by David Mosberger.
995 * The Hurd port got a lot more functionality like AIO, various stdio
996 extensions, etc. Mainly done by Roland McGrath.
998 * mtrace can now lookup symbols in shared libraries.
1002 * Intel's IA-64 math library is largely integrated. It provides fast and
1003 accurate implementatations for most basic and standard math functions
1004 in float, double, and long double format.
1006 * Stephen Moshier implemented j0, j1, jn, y0, y1, yn, lgamma, erf, erfc,
1007 and asin for the 96-bit long double format and asin, log, tan for the
1008 128-bit long double format.
1010 * The beginning of a last-bit accurate math library by IBM Haifa were added.
1011 The basic double functions exist today. Contributed by Abraham Ziv
1012 <ziv@il.ibm.com>, Moshe Olshansky <olshansk@il.ibm.com>, Ealan Henis
1013 <ealan@il.ibm.com>, and Anna Reitman <reitman@il.ibm.com>.
1015 * An asynchronous name lookup library was added. The interface is designed
1016 after POSIX AIO. The proposal was circulated beforehand to get comments.
1017 No negative ones came in. Implemented by Ulrich Drepper.
1019 * Port to S390/64bit contributed by Martin Schwidefsky
1020 <schwidefsky@de.ibm.com>.
1022 * David Mosberger <davidm@hpl.hp.com> implemented the setcontext family
1023 of functions for Linux/IA-64.
1025 * The RPC code is now thread safe. Threads can now use the same service
1026 of different services at the same time. Patch by Eric Norum
1027 <eric.norum@usask.ca> with some help by Ulrich Drepper.
1029 * Martin Schwidefsky <schwidefsky@de.ibm.com> implemented the setcontext
1030 family of functions for Linux/S390.
1032 * Ulrich Drepper <drepper@redhat.com> implemented the setcontext family
1033 of functions for Linux/x86.
1035 * Port to Linux/CRIS contributed by Axis Communications.
1039 * Lots of headers were cleaned up. Using the tool in the conform/ subdir
1040 we can now check for namespace violations and missing declarations. The
1041 result is that almost all headers are now Unix-compliant (as defined in
1042 the upcoming XPG6). The negative side is that some programs might need
1043 corrections, too, if they depend on the incorrect form of the headers in
1044 previous versions which defined too many symbols and included too many
1047 * regex now handles multibyte character sets correctly.
1048 Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
1050 * iconv (the program) does now conform to the upcoming XPG6 and handles
1051 charmaps. Instead of the charset names the path of charmaps can be
1052 provided and the conversion happens based on this data.
1053 Contributed by Ulrich Drepper.
1055 * The locale program now provides detailed information about the installed
1060 only lists the names of the supported locales
1064 provides details such as country, language, and codeset name.
1065 Contributed by Ulrich Drepper.
1069 * The gencat program now parses the input file according to the charset
1070 selected by the LC_CTYPE category. This is important for stateful
1071 character sets. To make generating catalogs easier there is a way
1072 to overwrite the charset selected by the locale: before the first
1073 message or $ quote line the catalog can contain a line like
1075 $ codeset=ISO-8859-2
1077 to select the charset (ISO-8859-2 in this case).
1079 Implemented by Shinya Hanataka and Ulrich Drepper.
1081 * New codeset conversion modules: IBM-922 (Estonia PC codeset),
1082 IBM-1124 (Ukraine PC codeset), IBM-1129 (Vietnamese PC codeset).
1083 Contributed by Masahide Washizawa <washi@jp.ibm.com>.
1085 * Optimized string functions for Alpha ev6 and ev67 by Richard Henderson
1086 <rth@redhat.com> and Rick Gorton <rick.gorton@alpha-processor.com>.
1088 * The LANGUAGE environment variable is now ignored unless the locale is
1089 changed from the default "C" locale.
1091 * The usual bug fixes.
1095 * Greg McGary added runtime support for bounds checking using gcc's
1096 new -fbounded-pointers option. ix86 target is complete. PowerPC
1099 * Thorsten Kukuk added secure mode support to nscd.
1101 * The Berkeley db libraries have been removed.
1103 Related, the nss_db module is now in a separate package since it
1104 obviously requires a database library being available.
1106 * Wide character I/O streams implemented by Ulrich Drepper.
1108 * Functions from the extended socket API added by Ulrich Drepper.
1110 * Functions feenableexcept and fedisableexcept to control the
1111 behaviour of individual exceptions have been added by Andreas Jaeger.
1113 * ldconfig program added by Andreas Jaeger and Jakub Jelinek.
1115 * The resolver code has been updated from bind 8.2.3-T5B which supports
1116 threads. The integration was done by Andreas Jaeger, Adam D. Bradley,
1119 This change could in some situations effect backward compatibility. Since
1120 now `_res' is a thread-local instead of a global variable, modifying it
1121 in one thread does not have any effect in other threads.
1123 The resolver library was also extended to allow IPv6 as the transport
1124 protocol for the requests. This work was done by Stig Venaas.
1126 * Compatibility code for K&R C compilers has been removed from the
1127 header files. A ISO C compiler is needed to use the library
1128 (conforming to either C89 or C99 standard).
1130 * Complete rewrite of the localedef program to support multibyte character
1131 sets. Implement handling of ISO 14651 and ISO 14652. Rewrite strcoll,
1132 strxfrm, wcscoll, and wcsxfrm functions. Make isw*() functions work.
1133 Implemented by Ulrich Drepper.
1135 Bruno Haible significantly improved the generation and use of the data
1136 structures for the wide character tables.
1138 * Plural handling in gettext implemented by Ulrich Drepper.
1140 * The utmp daemon has been removed.
1142 * The port to MIPS-Linux has been finished by Andreas Jaeger.
1144 * A port to Hitachi SH3 and SH4 has been contributed by Kazumoto Kojima
1147 * POSIX clocks and timers implemented by Kaz Kylheku and Ulrich Drepper.
1149 * POSIX barriers implemented by Kaz Kylheku.
1151 * POSIX spawn function family implemented by Ulrich Drepper.
1153 * POSIX spinlocks are now available.
1155 * Timed wait functions for mutex, rwlock, and semaphores are implemented.
1157 * the configure option --enable-kernel=X.Y.Z allows to strip out
1158 compatibility for kernel versions before X.Y.Z. This is currently only
1159 implemented for Linux.
1161 * the sockaddr_in6 structure changed. The IPv6 working group added a new
1162 field sin6_scope_id. This means that all programs using IPv6 should be
1163 recompiled. Don't expect binary compatibility with previous glibc
1166 * various conversion modules for IBM character sets contributed by
1169 * IA-64 port by Jes Sorensen and HJ Lu.
1183 * New ISO C 9x function _Exit, imaxabs, and imaxdiv are added.
1185 * New xdr functions are added; some rpc functions are now 64bit clean.
1187 * Fixed a number of bugs and memory leaks (especially in NIS+ code).
1189 * Fixed known incompatibilities with glibc 2.0.
1191 * New functions lock64, strchrnul, rawmemchr, getutmp and getutmpx.
1193 * Optimized a number of functions (especially the ELF dynamic loader).
1195 * Update timezone data files.
1197 * lots of charmaps corrections
1199 * some new locale definitions and charmaps
1204 * Richard Henderson corrected size of struct timeval on Linux/Alpha to
1205 conform to POSIX member type requirements. Symbol versions have been
1206 adjusted as needed within the library, and for direct use by applications,
1207 but there is potential for problems if third-party libraries use
1208 struct timeval as part of their interface. This does not present
1209 a problem for X and other "essential" system libraries.
1211 * An additional locale model to support C++ Standard Library locale
1212 model and probably more was implemented by Ulrich Drepper.
1214 * Eric Youngdale and Ulrich Drepper implemented versioning of objects on
1217 * Miles Bader provided the `argp' function family to support hierachical
1218 command line argument parsing, layered on top of getopt.
1220 * strtod accepts new hexadecimal floating-point format from ISO C 9X.
1222 * printf has two new specifiers %a and %A to print hexadecimal flaoting-point
1225 * scanf recognizes the %a and %A format for scanning floating point numbers.
1227 * the new headers <stdint.h> and <inttypes.h> from ISO C 9X provides
1228 information and interfaces for the available integer types.
1230 * about 130 new math functions were added to implement the ISO C9x math
1233 * the new header <complex.h> contains definitions of the complex math
1234 functions from ISO C 9X.
1236 * the new header <tgmath.h> defines generic macros to use complex or
1237 real valued functions.
1239 * Thorsten Kukuk provided an implementation for NIS+, securelevel 0, 1 and 2.
1241 * Andreas Jaeger provided a test suite for the math library.
1243 * Mark Kettenis implemented the utmpx interface and an utmp daemon.
1245 * Ulrich Drepper added character set conversion functions (iconv).
1247 * Optimized string functions have been added.
1249 * The localedata addon is now part of glibc.
1251 * An implementation of profiling shared libraries was added by Ulrich Drepper.
1253 * Thorsten Kukuk and Ulrich Drepper provided an implementation for a caching
1254 daemon for NSS (nscd).
1256 Missing a better place here are some numbers on improvements. Under
1257 Linux 2.1.125 un-tar-ing the kernel sources takes
1261 using local files 12.19s 6.88s 22.91s
1263 using NIS 13.92s 8.91s 26.34s
1265 using NIS & nscd 10.37s 7.34s 25.30s
1267 using NIS+ 27.57s 30.37s 640.46s
1269 using NIS+ & nscd 10.25s 7.83s 26.51s
1271 using NIS & old nscd [1] 13.83s 8.32s 29.60s
1273 Keep in mind that non-namelookup related operations dominate above times.
1274 It was just a common complain that using NIS+ unpacking the kernel is
1277 [1] The old nscd implementation is not available anymore since it was
1278 distributed with glibc up to version 2.0.98 and thus is now replaced.
1280 * Tim Waugh provided an implementation of the POSIX.2 wordexp function family.
1282 * Mark Kettenis provided a Hesiod NSS module.
1284 * The ELF dynamic loader knows how to process dynamic string tokens ($ORIGIN
1285 and $PLATFORM) in RPATHs and similar strings (Ulrich Drepper).
1287 * rcmd can now handle netgroups (Dick Streefland).
1289 * A port to the ARM was contributed by Phil Blundell, Pat Beirne and Scott
1292 * Support for the IPv6 protocol has been added to the socket API, as per the
1293 latest draft standards.
1295 * Support for Linux 2.2 has been added.
1297 * Interface changes relative to the latest 2.0.x release:
1298 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1299 addseverity NEW: Unix98
1300 alphasort64 NEW: LFS
1301 argp_err_exit_status NEW: argp, GNU ext
1302 argp_error NEW: argp, GNU ext
1303 argp_failure NEW: argp, GNU ext
1304 argp_help NEW: argp, GNU ext
1305 argp_parse NEW: argp, GNU ext
1306 argp_program_bug_address NEW: argp, GNU ext
1307 argp_program_version NEW: argp, GNU ext
1308 argp_program_version_hook NEW: argp, GNU ext
1309 argp_state_help NEW: argp, GNU ext
1310 argp_usage NEW: argp, GNU ext
1311 authdes_create NEW: Secure RPC
1312 authdes_getucred NEW: Secure RPC
1313 authdes_pk_create NEW: Secure RPC
1314 backtrace NEW: GNU ext.
1315 backtrace_symbols NEW: GNU ext.
1316 backtrace_symbols_fd NEW: GNU ext.
1318 cacosf NEW: ISO C 9x
1319 cacosh NEW: ISO C 9x
1320 cacoshf NEW: ISO C 9x
1321 cacoshl NEW: ISO C 9x
1322 cacosl NEW: ISO C 9x
1329 casinf NEW: ISO C 9x
1330 casinh NEW: ISO C 9x
1331 casinhf NEW: ISO C 9x
1332 casinhl NEW: ISO C 9x
1333 casinl NEW: ISO C 9x
1335 catanf NEW: ISO C 9x
1336 catanh NEW: ISO C 9x
1337 catanhf NEW: ISO C 9x
1338 catanhl NEW: ISO C 9x
1339 catanl NEW: ISO C 9x
1340 cbc_crypt NEW: Secure RPC
1344 ccoshf NEW: ISO C 9x
1345 ccoshl NEW: ISO C 9x
1351 cimagf NEW: ISO C 9x
1352 cimagl NEW: ISO C 9x
1353 clearerr_locked REMOVED
1354 clntunix_create NEW: sunrpc ext
1356 clog10 NEW: ISO C 9x
1357 clog10f NEW: ISO C 9x
1358 clog10l NEW: ISO C 9x
1368 cprojf NEW: ISO C 9x
1369 cprojl NEW: ISO C 9x
1371 crealf NEW: ISO C 9x
1372 creall NEW: ISO C 9x
1377 csinhf NEW: ISO C 9x
1378 csinhl NEW: ISO C 9x
1381 csqrtf NEW: ISO C 9x
1382 csqrtl NEW: ISO C 9x
1386 ctanhf NEW: ISO C 9x
1387 ctanhl NEW: ISO C 9x
1389 des_setparity NEW: Secure RPC
1390 ecb_crypt NEW: Secure RPC
1391 endutxent NEW: Unix98
1393 exp10f NEW: ISO C 9x
1394 exp10l NEW: ISO C 9x
1398 fattach NEW: STREAMS
1399 fdetach NEW: STREAMS
1403 feclearexcept NEW: ISO C 9x
1404 fegetenv NEW: ISO C 9x
1405 fegetexceptflag NEW: ISO C 9x
1406 fegetround NEW: ISO C 9x
1407 feholdexcept NEW: ISO C 9x
1409 feraiseexcept NEW: ISO C 9x
1410 ferror_locked REMOVED
1411 fesetenv NEW: ISO C 9x
1412 fesetexceptflag NEW: ISO C 9x
1413 fesetround NEW: ISO C 9x
1414 fetestexcept NEW: ISO C 9x
1415 feupdateenv NEW: ISO C 9x
1416 fflush_locked REMOVED
1420 fgets_unlocked NEW: GNU ext.
1421 fileno_locked REMOVED
1433 fputc_locked REMOVED
1434 fputs_unlocked NEW: GNU ext.
1435 fread_unlocked NEW: GNU ext.
1440 fstatvfs NEW: Unix98
1444 ftruncate64 NEW: LFS
1446 fwrite_unlocked NEW: GNU ext.
1447 gai_strerror NEW: IPv6
1451 getchar_locked REMOVED
1453 getdate_err NEW: Unix98
1454 getdate_r NEW: GNU ext.
1456 getnameinfo NEW: IPv6
1457 getnetname NEW: Secure RPC
1458 getpmsg NEW: STREAMS
1459 getpt NEW: Unix98 PTY
1460 getrlimit64 NEW: LFS
1461 getutxent NEW: Unix98
1462 getutxid NEW: Unix98
1463 getutxline NEW: Unix98
1464 glob64 NEW: GNU ext.
1465 globfree64 NEW: GNU ext.
1466 gnu_get_libc_release NEW: GNU ext.
1467 gnu_get_libc_version NEW: GNU ext.
1468 grantpt NEW: Unix98 PTY
1469 host2netname NEW: Secure RPC
1471 iconv_close NEW: iconv
1472 iconv_open NEW: iconv
1473 if_freenameindex NEW: IPv6
1474 if_indextoname NEW: IPv6
1475 if_nameindex NEW: IPv6
1476 if_nametoindex NEW: IPv6
1477 in6addr_any NEW: IPv6
1478 in6addr_loopback NEW: IPv6
1479 inet6_isipv4mapped NEW: IPv6
1480 isastream NEW: STREAMS
1481 iswblank NEW: GNU ext.
1482 key_decryptsession NEW: Secure RPC
1483 key_decryptsession_pk NEW: Secure RPC
1484 key_encryptsession NEW: Secure RPC
1485 key_encryptsession_pk NEW: Secure RPC
1486 key_gendes NEW: Secure RPC
1487 key_get_conv NEW: Secure RPC
1488 key_secretkey_is_set NEW: Secure RPC
1489 key_setnet NEW: Secure RPC
1490 key_setsecret NEW: Secure RPC
1491 llrint NEW: ISO C 9x
1492 llrintf NEW: ISO C 9x
1493 llrintl NEW: ISO C 9x
1494 llround NEW: ISO C 9x
1495 llroundf NEW: ISO C 9x
1496 llroundl NEW: ISO C 9x
1501 lrintf NEW: ISO C 9x
1502 lrintl NEW: ISO C 9x
1503 lround NEW: ISO C 9x
1504 lroundf NEW: ISO C 9x
1505 lroundl NEW: ISO C 9x
1507 makecontext NEW: Unix98
1508 mempcpy NEW: GNU ext.
1511 modify_ldt NEW: kernel
1515 nearbyint NEW: ISO C 9x
1516 nearbyintf NEW: ISO C 9x
1517 nearbyintl NEW: ISO C 9x
1518 netname2host NEW: Secure RPC
1519 netname2user NEW: Secure RPC
1520 nexttoward NEW: ISO C 9x
1521 nexttowardf NEW: ISO C 9x
1522 nexttowardl NEW: ISO C 9x
1526 passwd2des NEW: Secure RPC
1528 pow10f NEW: GNU ext.
1529 pow10l NEW: GNU ext.
1532 printf_size NEW: GNU ext.
1533 printf_size_info NEW: GNU ext.
1534 profil_counter REMOVED
1535 pthread_mutexattr_getkind_np REPLACED
1536 pthread_mutexattr_setkind_np REPLACED
1537 ptsname NEW: Unix98 PTY
1538 ptsname_r NEW: Unix98 PTY
1540 putchar_locked REMOVED
1541 putgrent NEW: GNU ext.
1543 putpmsg NEW: STREAMS
1544 pututxline NEW: Unix98
1548 readdir64_r NEW: LFS
1549 remquo NEW: ISO C 9x
1550 remquof NEW: ISO C 9x
1551 remquol NEW: ISO C 9x
1553 roundf NEW: ISO C 9x
1554 roundl NEW: ISO C 9x
1556 scalbln NEW: ISO C 9x
1557 scalblnf NEW: ISO C 9x
1558 scalblnl NEW: ISO C 9x
1560 sendfile NEW: kernel
1561 setcontext NEW: Unix98
1562 setrlimit64 NEW: LFS
1563 setutxent NEW: Unix98
1565 sigignore NEW: Unix98
1566 sigqueue NEW: POSIX.1b
1567 sigrelse NEW: Unix98
1568 sigset NEW: POSIX.1b
1569 sigtimedwait NEW: POSIX.1b
1570 sigwaitinfo NEW: POSIX.1b
1571 sincos NEW: GNU ext.
1572 sincosf NEW: GNU ext.
1573 sincosl NEW: GNU ext.
1577 strcasestr NEW: GNU ext.
1578 strtoimax NEW: ISO C 9x
1579 strtoumax NEW: ISO C 9x
1580 strverscmp NEW: GNU ext.
1581 svcauthdes_stats NEW: Secure RPC
1582 svcunix_create NEW: sunrpc etx
1583 svcunixfd_create NEW: sunrpc ext
1584 swapcontext NEW: Unix98
1585 tcgetsid NEW: Unix98 PTY
1586 tdestroy NEW: GNU ext.
1587 tgamma NEW: ISO C 9x
1588 tgammaf NEW: ISO C 9x
1589 tgammal NEW: ISO C 9x
1593 truncf NEW: ISO C 9x
1594 truncl NEW: ISO C 9x
1596 unlockpt NEW: Unix98 PTY
1597 updwtmpx NEW: Unix98
1598 user2netname NEW: Secure RPC
1599 utmpxname NEW: Unix98
1600 versionsort NEW: GNU ext.
1601 versionsort64 NEW: GNU ext.
1603 wcscasecmp NEW: GNU ext.
1604 wcsncasecmp NEW: GNU ext.
1605 wcsnlen NEW: GNU ext.
1606 wcstoimax NEW: ISO C 9x
1607 wcstoll NEW: ISO C 9x
1608 wcstoull NEW: ISO C 9x
1609 wcstoumax NEW: ISO C 9x
1611 wordexp NEW: POSIX.2
1612 wordfree NEW: POSIX.2
1613 write_profiling REMOVED
1614 xdecrypt NEW: Secure RPC
1615 xdr_authdes_cred NEW: Secure RPC
1616 xdr_authdes_verf NEW: Secure RPC
1617 xdr_cryptkeyarg NEW: Secure RPC
1618 xdr_cryptkeyarg2 NEW: Secure RPC
1619 xdr_cryptkeyres NEW: Secure RPC
1620 xdr_getcredres NEW: Secure RPC
1621 xdr_key_netstarg NEW: Secure RPC
1622 xdr_key_netstres NEW: Secure RPC
1623 xdr_keybuf NEW: Secure RPC
1624 xdr_keystatus NEW: Secure RPC
1625 xdr_netnamestr NEW: Secure RPC
1626 xdr_sizeof NEW: Secure RPC
1627 xdr_unixcred NEW: sunrpc ext
1628 xencrypt NEW: Secure RPC
1629 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
1640 * inet_ntoa is thread-safe
1642 * updwtmp is moved from libutil to libc
1644 * rewrite of cbrt function
1646 * update of timezone data
1660 * add atoll function
1662 * fix complex problems in Berkeley DB code
1664 * fix math functions
1668 * fixed lots of header problems (especially Linux/GNU specific)
1670 * dynamic loader preserves all registers
1672 * Roland McGrath provided support for handling of auxiliary objects in
1673 the ELF dynamic loader.
1675 * support for parallel builds is improved
1679 * GNU extensions are no longer declared by default. To enable them you
1680 must define the macro `_GNU_SOURCE' in your program or compile with
1683 * The library has changed from using GNU ld symbol aliases to using weak
1684 symbols where available. The ELF object file format supports weak
1685 symbols; GNU ld also supports weak symbols in the a.out format. (There
1686 is also now support for other GNU ld extensions in ELF. Use the
1687 `--with-elf' option to configure to indicate you have ELF, and
1688 `--with-gnu-ld' if using GNU ld.) This change resulted in the deletion
1689 of many files which contained only symbol aliases, reducing the size of
1690 the source and the compiled library; many other files were renamed to
1691 less cryptic names previously occupied by the symbol alias files.
1692 There is a new header file <elf.h> for programs which operate on
1693 files in the ELF format.
1695 * Converted to Autoconf version 2, so `configure' has more options.
1696 Run `configure --help' to see the details.
1698 * The library can now be configured to build profiling, highly-optimized
1699 (but undebuggable), and/or shared libraries (ELF with GNU ld only). The
1700 `--enable-profile', `--enable-omitfp', and `--enable-shared' options to
1701 `configure' enable building these extra libraries. The shared library is
1702 built by default when using both ELF and GNU ld. When shared libraries
1703 are enabled, the new library `-ldl' is available for arbitrary run-time
1704 loading of shared objects; its interface is defined in <dlfcn.h>. The
1705 new header file <link.h> gives access to the internals of the run-time
1706 dynamic linker, `ld.so'. The shell script `ldd' is similar to the
1707 application of same name on other systems and it provides information
1708 about dynamically linked binaries.
1710 * The C library now provides the run-time support code for profiling
1711 executables compiled with `-pg'. Programs can control the profiling code
1712 through the interface in <sys/gmon.h>. The `gmon.out' files written by
1713 the GNU C library can be read only by GNU `gprof' (from GNU binutils);
1714 the support for this file format was contributed by David Mosberger-Tang.
1716 * The math code has been replaced with a math library based on fdlibm from
1717 Sun, and modified by JT Conklin and Ulrich Drepper with i387 support, by
1718 Ian Taylor with `float' functions and by Ulrich Drepper with `long double'
1719 functions. The math functions now reside in a separate library, so
1720 programs using them will need to use `-lm' their linking commands.
1722 * John C. Bowman contributed optimized ix87 assembler inline functions.
1724 * Ulrich Drepper has contributed support for an `/etc/nsswitch.conf'
1725 mechanism similar to that found in Solaris 2. This is now used for the
1726 group, passwd, hosts, networks, services, protocols, rpc, ethers,
1727 shadow, netgroup, publickey, and alias databases. The `nsswitch.conf'
1728 file controls what services are used for each individual database. This
1729 works by loading shared libraries with names specified in `nsswitch.conf',
1730 so service modules can be changed or added at any time without even
1731 relinking any program. Currently there are the file, db, and NIS based
1732 NSS services available.
1734 * The new functions `strtoq' and `strtouq' parse integer values from
1735 strings, like `strtol' and `strtoul', but they return `long long int' and
1736 `unsigned long long int' values, respectively (64-bit quantities).
1738 * The new functions `strtof' and `strtold' parse floating-point values from
1739 strings, like `strtod', but they return `float' and `long double' values,
1740 respectively (on some machines `double' and `long double' are the same).
1742 * Ulrich Drepper has contributed new implementations of the floating-point
1743 printing and reading code used in the `printf' family of functions and
1744 `strtod', `strtof', and `strtold'. These new functions are perfectly
1745 accurate, and much faster than the old ones.
1747 * The implementation of the POSIX locale model was completely rewritten by
1748 Ulrich Drepper. This includes the new programs `localedef' and `locale'
1749 to compile the POSIX locale definition.
1751 * The former dummy implementations of the strcoll and strxfrm function are
1752 now replaced by fully functional code contributed by Ulrich Drepper. The
1753 collation information comes from the POSIX locale definitions.
1755 * The new header <langinfo.h> defines an interface for accessing
1756 various locale-dependent data (using the locale chosen with `setlocale').
1758 * Ulrich Drepper has contributed a new suite of functions for operation on
1759 wide-character and multibyte-character strings, in <wchar.h>;
1760 and classification and case conversion of wide characters, in <wctype.h>.
1761 These new functions are conforming to the ISO C, Amendement 1 specification.
1763 * There is now a second implementation of the standard I/O library available.
1764 It comes from GNU libg++ as was written by Per Bothner, heavily modified
1765 by Hongjiu Lu and made thread safe by Ulrich Drepper.
1767 * You can now use positional parameter specifications in format strings
1768 for the `printf' and `scanf' families of functions. For example,
1769 `printf ("Number %2$d, Mr %1$s\n", "Jones", 6);'' prints
1770 ``Number 6, Mr Jones''. This is mainly useful when providing different
1771 format strings for different languages, whose grammars may dictate
1772 different orderings of the values being printed. To support this
1773 feature, the interface for `register_printf_handler' has changed; see
1774 the header file <printf.h> for details.
1776 * The `printf' and `scanf' families of functions now understand a new
1777 formatting flag for numeric conversions: the ' flag (e.g. %'d or %'f) says
1778 to group numbers as indicated by the locale; for `scanf' and friends, this
1779 says to accept as valid only a number with all the proper grouping
1780 separators in the right places. In the default "C" locale, numbers are
1781 not grouped; but locales for specific countries will define the usual
1782 conventions (i.e. separate thousands with `,' in the US locale).
1784 * The pgrp functions have been regularized, slightly incompatibly but much
1785 less confusingly. The core functions are now `getpgid' and `setpgid',
1786 which take arguments for the PID to operate on; the POSIX.1 `getpgrp' (no
1787 argument) and BSD `setpgrp' (identical to `setpgid') functions are
1788 provided for compatibility. There is no longer an incompatible `getpgrp'
1789 with an argument declared under _BSD_SOURCE; no BSD code uses it.
1791 * The new header file <fts.h> and suite of functions simplify programs that
1792 operate on directory trees. This code comes from 4.4 BSD.
1794 * The resolver code has been updated from the BIND 4.9.5-P1 release.
1795 Parts of the code were heavily modified by Ulrich Drepper to fit in the
1796 NSS scheme used in glibc.
1798 * There is a new malloc debugging hook `__memalign_hook'.
1800 * There are new typedefs `ushort' for `unsigned short int' and `uint' for
1801 `unsigned int' in <sys/types.h>. These are for compatibility only and
1802 their use is discouraged.
1804 * The `-lmcheck' library to enable standard malloc debugging hooks is now
1805 done differently, so that it works even without GNU ld.
1807 * New function `euidaccess' checks allowed access to a file like `access',
1808 but using the effective IDs instead of the real IDs.
1810 * The time zone data files have been updated for the latest and greatest
1811 local time conventions of the countries of the world.
1813 * The new function `dirfd' extracts the file descriptor used by a DIR stream;
1816 * The new functions `ecvt', `fcvt', and `gcvt' provide an obsolete interface
1817 for formatting floating-point numbers. They are provided only for
1818 compatibility; new programs should use `sprintf' instead. There are
1819 also equivalent function for the `long double' floating-point type and
1820 all functions also exist in a reentrant form.
1822 * The new auxiliary library `-lutil' from 4.4 BSD contains various
1823 functions for maintaining the login-record files (primarily of use to
1824 system programs such as `login'), and convenient functions for
1825 allocating and initializing a pseudo-terminal (pty) device.
1827 * Ulrich Drepper has contributed new support for System V style
1828 shared memory and IPC on systems that support it.
1830 * Ulrich Drepper has contributed several miscellaneous new functions found
1831 in System V: The `hsearch' family of functions provide an effective
1832 implementation of hash tables; `a64l' and `l64a' provide a very simple
1833 binary to ASCII mapping; `drand48' and friends provide a 48-bit random
1836 * Ulrich Drepper has contributed new reentrant counterparts for the
1837 `random' and `hsearch' families of functions; `random_r', `hsearch_r', etc.
1839 * Ulrich Drepper has contributed new, highly-optimized versions of several
1840 string functions for the i486/Pentium family of processors.
1842 * Ulrich Drepper has updated the Linux-specific code, based largely
1843 on work done in Hongjiu Lu's version of GNU libc for Linux.
1844 The GNU library now supports Linux versions 2.0.10 and later,
1845 using the ELF object file format (i[3456]86-*-linux).
1847 * Andreas Schwab has ported the C library to Linux/m68k (m68k-*-linux).
1849 * David Mosberger-Tang and Richard Henderson have ported the C library
1850 to Linux/Alpha (alpha-*-linux). Richard Henderson contributed the
1851 dynamic linking support for ELF/Alpha.
1853 * Richard Henderson contributed several Alpha optimized assembler function
1854 for arithmetic and string handling.
1856 * Ulrich Drepper has contributed a new set of message catalog functions to
1857 support multiple languages using the <libintl.h> interface, for use with
1858 his new package GNU gettext. Translation volunteers have contributed
1859 catalogs of the library's messages in Spanish, German, and Korean.
1861 * For compatibility with XPG4, Ulrich Drepper has contributed the `gencat'
1862 program and the `catgets' function for reading the catalog files it
1863 creates. (The <libintl.h> interface is preferred; we include the
1864 <nl_types.h> interface using `catgets' only for source compatibility with
1865 programs already written to use it.)
1867 * New header file <values.h> gives SVID-compatible names for <limits.h>
1870 * Various new macros, declarations, and small header files for compatibility
1873 * New function `group_member' is a convenient way to check if a process has
1874 a given effective group ID.
1876 * When using GCC 2.7 and later, the socket functions are now declared in a
1877 special way so that passing an argument of type `struct sockaddr_in *',
1878 `struct sockaddr_ns *', or `struct sockaddr_un *' instead of the generic
1879 `struct sockaddr *' type, does not generate a type-clash warning.
1881 * New function `error' declared in header file <error.h> is a convenient
1882 function for printing error messages and optionally exiting; this is the
1883 canonical function used in GNU programs. The new functions `err', `warn',
1884 and friends in header file <err.h> are the canonical 4.4 BSD interface for
1885 doing the same thing.
1887 * The <glob.h> interface has several new flags from 4.4 BSD that extend the
1888 POSIX.2 `glob' function to do ~ and {...} expansion.
1890 * New function `unsetenv' complements `setenv' for compatibility with 4.4 BSD.
1891 `clearenv' which is used in POSIX.9 is also available.
1893 * New function `getsid' returns session ID number on systems that support it.
1895 * We have incorporated the 4.4 BSD `db' library (version 1.85). New header
1896 files <db.h> and <mpool.h> provide a rich set of functions for several
1897 types of simple databases stored in memory and in files, and <ndbm.h> is
1898 an old `ndbm'-compatible interface using the `db' functions. Link with
1899 `-ldb' to get these functions.
1901 * New macro `strdupa' copies a string like `strdup', but uses local stack
1902 space from `alloca' instead of dynamic heap space from `malloc'.
1904 * New function `strnlen' is like `strlen' but searches only a given maximum
1905 number of characters for the null terminator. `stpncpy', `strndup' and
1906 `strndupa' are similar variants for the `stpcpy', `strdup' and `strdupa'
1909 * New function `statfs' in header <sys/statfs.h>.
1911 * The new <argz.h> and <envz.h> interfaces contributed by Miles Bader
1912 provide convenient functions for operating on blocks of null-terminated
1915 * A new suite of functions in <utmp.h> handle all the details of reading
1916 and writing the utmp file.
1918 * An implementation of the NIS/YP(tm) based NSS service was contributed by
1921 * Paul Eggert and Ulrich Drepper modified the `strftime' function to be
1922 completely POSIX compliant and also implemented the extended functionality
1923 to handle alternate digit representation and alternate era date formats.
1925 * Ulrich Drepper provided an implementation of the `strptime' function
1926 defined in XPG4.2 which transforms a string into a `struct tm' value.
1928 * Paul Eggert provided the tzselect shell script as part of the timezone
1929 code. The shell script makes it easy to select the correct timezone
1932 * The implementation of the malloc family of functions is completely replaced
1933 by a new implementation by Doug Lea with many improvements by Wolfram Gloger.
1934 The implementation uses the mmap function (if available) and it is
1935 optimized for the use in multi threaded programs.
1937 * Ulrich Drepper contributed a MD5 "encryption" for the crypt family of
1938 functions. This new functionality is usable by specifying a special
1939 salt string and it is compatible with implementation on *BSD systems.
1941 * Lots of functions from the XPG4.2 standard were added by Ulrich Drepper:
1942 `getsubopt' to handle second level command line options, `bsd_signal'
1943 to access BSD style `signal' functionality, the obsolete `regexp' style
1946 * the `lchown' function is available on system which support this
1949 * The implementation of the shadow password handling function was contributed
1952 * David Mosberger-Tang changed the SunRPC implementation to be 64bit safe.
1954 * POSIX.1g support was added. The <sys/select.h> header is available,
1955 `isfdtype' and `pselect' are implemented. Craig Metz contributed an
1956 implementation of `getaddrinfo'.
1960 * For cross-compilation you should now set `BUILD_CC' instead of `HOST_CC'.
1962 * New header file <fstab.h> and new functions `getfsspec', `getfsent' and
1963 friends, for parsing /etc/fstab. This code comes from 4.4 BSD.
1965 * The new function `daemon' from 4.4 BSD is useful for server programs that
1966 want to put themselves in the background.
1968 * Joel Sherrill has contributed support for several standalone boards that
1969 run without an operating system.
1971 * `printf', `scanf' and friends now accept a `q' type modifier for long
1972 long int as well as `ll'. Formats using these might be `%qu' or `%lld'.
1974 * All of the code taken from BSD (notably most of the math and networking
1975 routines) has been updated from the BSD 4.4-Lite release.
1977 * The resolver code has been updated from the BIND-4.9.3-BETA9 release.
1979 * The new functions `getdomainname' and `setdomainname' fetch or change the
1980 YP/NIS domain name. These are system calls which exist on systems which
1983 * The time zone data files have been updated for the latest international
1986 * The SunRPC programs `portmap' and `rpcinfo' are now installed in
1987 $(sbindir) (usually /usr/local/sbin) instead of $(bindir).
1991 * The C library now includes support for Sun RPC, from Sun's free
1992 RPCSRC-4.0 distribution. The `portmap', `rpcinfo', and `rpcgen' programs
1993 are included. (There is still no support for YP.)
1995 * Tom Quinn has contributed a port of the C library to SGI machines running
1996 Irix 4 (mips-sgi-irix4).
1998 * The new `lockf' function is a simplified interface to the locking
1999 facilities of `fcntl', included for compatibility.
2001 * New time functions `timegm', `timelocal', and `dysize' for compatibility.
2003 * New header file <sys/timeb.h> and new function `ftime' for compatibility.
2005 * New header files <poll.h> and <sys/poll.h> and new function `poll' for
2008 * The error message printed by `assert' for a failed assertion now includes
2009 the name of the program (if using GNU ld) and the name of the calling
2010 function (with versions of GCC that support this).
2012 * The `psignal' function is now declared in <signal.h>, not <stdio.h>.
2014 * The library now includes the <sys/mman.h> header file and memory
2015 management functions `mmap', `munmap', `mprotect', `msync', and
2016 `madvise', on systems that support those facilities.
2018 * The interface for `mcheck' has changed slightly: the function called to
2019 abort the program when an allocation inconsistency is detected now takes
2020 an argument that indicates the type of failure. The new function
2021 `mprobe' lets you request a consistency check for a particular block at
2022 any time (checks are normally done only when you call `free' or `realloc'
2025 * It is now possible to easily cross-compile the C library, building on one
2026 system a library to run on another machine and/or operating system. All
2027 you need to do is set the variable `HOST_CC' in `configparms' to the
2028 native compiler for programs to run on the machine you are building on (a
2029 few generator programs are used on Unix systems); set `CC' to the
2032 * The new function `fexecve' (only implemented on the GNU system) executes
2033 a program file given a file descriptor already open on the file.
2037 * Brendan Kehoe has contributed most of a port to the DEC Alpha
2038 running OSF/1 (alpha-dec-osf1). He says it is 75% complete.
2040 * You can set the variable `libprefix' in `configparms' to specify a prefix
2041 to be prepended to installed library files; this makes it easy to install
2042 the GNU C library to be linked as `-lgnuc' or whatever.
2044 * The new `stpncpy' is a cross between `stpcpy' and `strncpy': It
2045 copies a limited number of characters from a string, and returns the
2046 address of the last character written.
2048 * You no longer need to check for whether the installed `stddef.h' is
2049 compatible with the GNU C library. configure now checks for you.
2051 * You can now define a per-stream `fileno' function to convert the
2052 stream's cookie into an integral file descriptor.
2054 * ``malloc (0)'' no longer returns a null pointer. Instead, it
2055 allocates zero bytes of storage, and returns a unique pointer which
2056 you can pass to `realloc' or `free'. The behavior is undefined if
2057 you dereference this pointer.
2059 * The C library now runs on Sony NEWS m68k machines running either
2060 NewsOS 3 or NewsOS 4.
2062 * The new `syscall' function is a system-dependent primitive function
2063 for invoking system calls. It has the canonical behavior on Unix
2064 systems, including unreliable return values for some calls (such as
2065 `pipe', `fork' and `getppid').
2067 * The error code `EWOULDBLOCK' is now obsolete; it is always defined
2068 to `EAGAIN', which is the preferred name. On systems whose kernels
2069 use two distinct codes, the C library now translates EWOULDBLOCK to
2070 EAGAIN in every system call function.
2074 * The GNU C Library Reference Manual is now distributed with the library.
2075 `make dvi' will produce a DVI file of the printed manual.
2076 `make info' will produce Info files that you can read on line using C-h i
2077 in Emacs or the `info' program.
2078 Please send comments on the manual to bug-glibc-manual@gnu.org.
2080 * The library now supports SVR4 on i386s (i386-unknown-sysv4).
2082 * Brendan Kehoe has contributed a port to Sun SPARCs running Solaris 2.
2084 * Jason Merrill has contributed a port to the Sequent Symmetry running
2085 Dynix version 3 (i386-sequent-dynix).
2087 * The library has been ported to i386s running SCO 3.2.4 (also known as SCO
2088 ODT 2.0; i386-unknown-sco3.2.4) or SCO 3.2 (i386-unknown-sco3.2).
2090 * New function `memory_warnings' lets you arrange to get warnings when
2091 malloc is running out of memory to allocate, like Emacs gives you.
2093 * The C library now contains the relocating allocator used in Emacs 19 for
2094 its editing buffers. This allocator (ralloc) minimizes allocation
2095 overhead and fragmentation by moving allocated regions around whenever it
2096 needs to. You always refer to a ralloc'd region with a "handle" (a
2097 pointer to a pointer--an object of type `void **').
2099 * There is a new `printf' format: `%m' gives you the string corresponding
2100 to the error code in `errno'.
2102 * In `scanf' formats, you can now use `%as' or `%a[' to do the normal `%s'
2103 or `%[' conversion, but instead of filling in a fixed-sized buffer you
2104 pass, the `a' modifier says to fill in a `char **' you pass with a
2107 * The `fnmatch' function supports the new flag bits `FNM_LEADING_DIR' and
2108 `FNM_CASEFOLD'. `FNM_LEADING_DIR' lets a pattern like `foo*' match a
2109 name like `foo/bar'. `FNM_CASEFOLD' says to ignore case in matching.
2111 * `mkstemp' is a traditional Unix function to atomically create and open a
2112 uniquely-named temporary file.
2116 * The standard location for the file that says what the local timezone is
2117 has changed again. It is now `/usr/local/etc/localtime' (or more
2118 precisely, `${prefix}/etc/localtime') rather than `/etc/localtime'.
2120 * The distribution no longer contains any files with names longer than 14
2123 * `struct ttyent' has two new flag bits: TTY_TRUSTED and TTY_CONSOLE.
2124 These are set by the new `trusted' and `console' keywords in `/etc/ttys'.
2126 * New functions `ttyslot' and `syslog' from 4.4 BSD.
2130 * The configuration process has changed quite a bit. The `configure'
2131 script is now used just like the configuration scripts for other GNU
2132 packages. The `sysdeps' directory hierarchy is much rearranged.
2133 The file `INSTALL' explains the new scheme in detail.
2135 * The header files no longer need to be processed into ANSI C and
2136 traditional C versions. There is just one set of files to install, and
2137 it will work with ANSI or old C compilers (including `gcc -traditional').
2139 * Brendan Kehoe and Ian Lance Taylor have ported the library to the
2140 MIPS DECStation running Ultrix 4.
2142 * The Sun 4 startup code (crt0) can now properly load SunOS 4 shared libraries.
2143 Tom Quinn contributed the initial code. The GNU C library can NOT yet be
2144 made itself into a shared library.
2146 * Yet further improved support for the i386, running 4.3 BSD-like systems
2147 (such as Mach 3 with the Unix single-server), or System V.
2149 * New function `strncasecmp' to do case-insensitive string comparison
2150 with limited length.
2152 * New function `strsep' is a reentrant alternative to `strtok'.
2154 * New functions `scandir' and `alphasort' for searching directories.
2156 * New function `setenv' is a better interface to `putenv'.
2158 * Ian Lance Taylor has contributed an implementation of the SVID `ftw'
2159 function for traversing a directory tree.
2161 * The GNU obstack package is now also part of the C library.
2162 The new function `open_obstack_stream' creates a stdio stream that
2163 writes onto an obstack; `obstack_printf' and `obstack_vprintf' do
2164 formatted output directly to an obstack.
2166 * Miscellaneous new functions: reboot, nice, sigaltstack (4.4 BSD only),
2167 cfmakeraw, getusershell, getpass, swab, getttyent, seteuid, setegid.
2169 * `FNM_FILE_NAME' is another name for `FNM_PATHNAME', used with `fnmatch'.
2171 * The new functions `strfry' and `memfrob' do mysterious and wonderful
2172 things to your strings.
2174 * There are some new test programs: test-fseek, testmb, and testrand.
2176 * Some work has been done to begin porting the library to 4.4 BSD and Linux.
2177 These ports are not finished, but are a good starting place for really
2178 supporting those systems.
2180 * `/etc/localtime' is now the standard location for the file that says what
2181 the local timezone is, rather than `/usr/local/lib/zoneinfo/localtime'.
2182 This follows the general principle that `/etc' is the place for all local
2183 configuration files.
2185 * The C library header files now use `extern "C"' when used by the C++
2186 compiler, so the C library should now work with C++ code.
2188 * The header file <bstring.h> is gone. <string.h> now declares bcopy,
2189 bcmp, bzero, and ffs. (Update: nowadays these functions are declared
2192 * Mike Haertel (of GNU e?grep and malloc fame) has written a new sorting
2193 function which uses the `merge sort' algorithm, and is said to be
2194 significantly faster than the old GNU `qsort' function. Merge sort is
2195 now the standard `qsort' function. The new algorithm can require a lot
2196 of temporary storage; so, the old sorting function is called when the
2197 required storage is not available.
2199 * The C library now includes Michael Glad's Ultra Fast Crypt, which
2200 provides the Unix `crypt' function, plus some other entry points.
2202 * The code and header files taken from 4.4 BSD have been updated with the
2203 latest files released from Berkeley.
2205 ----------------------------------------------------------------------
2206 Copyright information:
2208 Copyright (C) 1992-2013 Free Software Foundation, Inc.
2210 Permission is granted to anyone to make or distribute verbatim copies
2211 of this document as received, in any medium, provided that the
2212 copyright notice and this permission notice are preserved,
2213 thus giving the recipient permission to redistribute in turn.
2215 Permission is granted to distribute modified versions
2216 of this document, or of portions of it,
2217 under the above conditions, provided also that they
2218 carry prominent notices stating who last changed them.
2221 version-control: never
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